JP2003225132A - Internal tooth type reclining device, and shaking preventing method of internal tooth type reclining device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To fill up a clearance between a guide member and a lock member even with variation in shape dimension of each component. <P>SOLUTION: This reclining device 100 comprises a base plate 10 and a toothed plate 20 which are rotatably fixed on a shaft, the toothed plate comprises a tooth part 22, and the base plate comprises a guide groove 12 formed of a pair of guide parts 11. A lock member 13 is arranged in the guide groove to be protrudable and retreatable to the tooth part, and the lock member is protruded and retreated, whereby the engagement and disengagement to the tooth part controls the concentric rotation of the toothed plate. In this reclining device, a base material for forming at least one of the guide parts laid in the state of nipping the lock member is heated and softened, and the softened base material is pressed and moved toward the lock member, whereby the a close contact part 15 to closely make contact with the lock member is formed on the guide part. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a reclining device for tiltably connecting a seat cushion and a seat back in a vehicle seat, and more particularly, "backlash" when connecting the seat cushion and the seat back.
The present invention relates to a reclining device capable of preventing the occurrence of the above and a method thereof.

[0002]

2. Description of the Related Art "Reclinable seats," which include a vehicle seat and a backrest that is tiltable
The "seat cushion (seat)" and the "seat back (backrest)" are connected by a reclining device.

This reclining device, especially a reclining device for a vehicle seat, has a base plate fixed to the seat cushion side and a tooth plate fixed to the seat back side coaxially attached to the base plate. The plate is configured to be rotatable. Then, by rotating the tooth plate, the seat back is tilted in the front-rear direction.

A recess is formed on one surface of the tooth plate in the reclining device, and teeth are provided on the peripheral surface of the recess. On the other hand, in the base plate, a guide groove is provided by projecting a pair of guide portions facing each other, and a lock member is slidably arranged in the guide groove. And
The tip of the lock member engages with and disengages from the teeth of the tooth plate to control the rotation of the tooth plate with respect to the base plate.

Here, since the lock member arranged in the guide groove is repeatedly slid in the guide groove, a slight gap is present between the guide portion and the lock member. If the width of this gap is large, "backlash" may occur when the seatback is swung back and forth after the reclining device is mounted on the vehicle seat.
Will appear as. When seated on a vehicle seat in which such "backlash" occurs greatly, for example, the seat back slightly moves forward each time braking is performed, which significantly impairs riding comfort. Even if the degree of "backlash" does not impair the riding comfort, it is unavoidable that the parts precision is poor.

As a technique for effectively preventing the occurrence of such "backlash", there is a technique described in JP-A-11-299563. In the technique described in this publication, as shown in FIG. 5, the guide portion of the base plate fixed to the seat cushion side is subjected to plastic working such as tapping with a "punch" to thereby make the guide portion into a tooth member. The guide portion and the tooth member (lock member) are brought into close contact with each other by "moving the meat" toward the (lock member). Here, the "punch" is generally provided in a movable portion of a press machine, and the guide section is plastically deformed by applying a load to the guide section through the punch in the press machine. is there.

It can be said that this technique is an excellent technique in that the gap between the guide portion and the tooth member (lock member) can be surely filled in and the occurrence of the above "backlash" can be prevented.

However, the technique of the above publication has the following problems. That is, the "base plate" including the guide portion is manufactured in lots, and the formation dimensions of each portion in the lot-produced base plate vary from lot to lot. Therefore, even if the punch is driven into the guide portion with a constant load with a press machine, it is difficult to form a uniform close contact portion.

Therefore, when performing the plastic working by the press machine, it is necessary to cope with the above "variation" by adjusting the load of the press machine for each lot. The production line must be stopped while this load adjustment is performed, and "trial and error" is repeated in the load adjustment, which causes a problem that the production efficiency is significantly reduced.

Furthermore, when the punch is driven into the guide portion with excessive load, the guide portion comes into close contact with the tooth member (lock member) more than necessary, and the members are tightly attached to each other. Will be combined. for that reason,
There arises a problem that the tooth member (lock member) is completely fixed in the “guide groove” between the guide portions and does not move at all. In such a case, it is necessary to forcibly slide the tooth member (lock member) repeatedly to flatten (cut) the contact surface of the close contact portion in the guide portion.

Further, in the technique disclosed in Japanese Patent Laid-Open No. 11-299563, the guide portion and the tooth member are brought into close contact with each other by a "projection" formed by subjecting the guide portion to plastic working. There is. Since the guide portion and the tooth member are brought into close contact with each other by forming the “projection” in this manner, the above-mentioned members come into close contact with each other at “an extremely narrow area”, that is, “point”.

Here, the vehicle seat reclining device is generally used to fix the seat back in an inclined state with respect to the seat cushion. Therefore, the guide portion and the tooth member inside the reclining device are used. The “close contact portion” with is always pressed by the load from the seat back. Furthermore, each time the vehicle in which the reclining device is installed repeats acceleration or deceleration, a very large load concentrates on the “close contact portion”.

In the reclining device installed in such a severe place, when the "close contact portion" is formed in the "extremely small area" as described above, the "guide portion" and the "tooth member (lock member)" are worn out severely. Therefore, the durability of these members may be reduced.

[0014]

Therefore, in order to solve the above-mentioned various problems, the present invention softens by heating the "guide portion" which abuts on the lock member (tooth member), and then the said guide portion. It has been devised that it is sufficient to "move the meat" by pressing the guide portion, and to bring the guide portion and the lock member (tooth member) into close contact with each other on the "face". The problems to be solved are as follows.

That is, even if there are variations in the forming dimensions of the respective constituent members, by performing the processing under the same conditions,
It is possible to uniformly fill the gap existing between the guide portion and the lock member (tooth member).

[0016]

Means adopted by the present invention to solve the above problems will be described below with reference numerals used in the embodiments described later.

First, according to the first aspect of the invention, a base plate 10 fixed to the seat cushion side and a tooth plate 20 fixed to the seat back side are rotatably attached to the tooth plate 20. A concave portion 21 is formed on one surface of the concave portion 21, a tooth portion 22 is provided on an inner peripheral surface of the concave portion 21, and at least a pair of guide portions 11 are provided on the base plate 10. A guide groove 12 is formed therebetween, and a lock member 13 is slidably arranged in the guide groove 12 so as to advance and retreat with respect to a tooth portion 22 of the tooth plate 20, and the lock member 13 is an operating member. By operating the engagement / disengagement with respect to the tooth portion 22 by advancing and retreating, rotation of the tooth plate 20 with respect to the base plate 10 on the same axis is performed. In the vehicle seat reclining device 100 to be controlled, the base material forming at least one guide portion 11 of the pair of guide portions 11 in a state of sandwiching the lock member 13 is heated to be softened, and this softened By pressing the base material to move the base material toward the lock member 13, the guide portion 11 is formed with a close contact portion 15 that is in close contact with the lock member 13. is there.

In the reclining device 100 of the invention according to the present invention, when the "gap S" existing between the guide portion 11 and the lock member 13 is filled to form the close contact portion 15 with the guide portion 11, The base material forming the guide portion 11 is heated and pressed to “move meat” toward the lock member 13.

The base material forming the guide portion 11 is softened by heating prior to the pressing for "movement of meat". Since the base material has been softened, by pressing and deforming the base material, the guide portion 11 is substantially re-molded in a size corresponding to the actual size of the lock member 13. Therefore, even if there are variations in the formation dimensions of the guide portion 11 and the lock member 13, it is possible to reliably bring them into close contact with each other by performing processing under certain conditions.

Further, since the base material is softened, the guide portion 11 presses against the lock member 13 more than necessary when the material is "moved (deformed)" by pressing with a press or the like. Is avoided.

Therefore, according to the present invention, the guide portion 11 is prevented from tightly fitting with the lock member 13, and the guide portion 11 is surely brought into close contact even if there are variations in the formation dimensions of these members. It is possible to make it. Further, by softening the guide portion 11, it is possible to deform the guide portion 11 with a small weight, and therefore it is possible to deform even the small press machine.

According to the second aspect of the present invention, the base plate 10 fixed to the seat cushion side and the tooth plate 20 fixed to the seat back side are rotatably attached to the tooth plate 20. A concave portion 21 is formed on the surface of the concave portion 21, a tooth portion 22 is provided on the inner peripheral surface of the concave portion 21, and at least a pair of guide portions 11 are provided on the base plate 10.
A guide groove 12 is formed between them, and a lock member 13 is slidably arranged in the guide groove 12 so as to advance and retreat with respect to a tooth portion 22 of the tooth plate 20, and the lock member 13 is used as an operating member. The locking member 13 is clamped in the vehicle seat reclining device 100 that controls the rotation of the tooth plate 20 with respect to the base plate 10 coaxially by operating the engagement / disengagement of the tooth portion 22 by moving the tooth portion 22 forward and backward. Of the pair of guide portions 11 in the state, one guide portion 11a
The base material forming the other guide portion 11b is heated and softened, and the base material forming the other guide portion 11b is pressed to move the base material toward the lock member 13 to form the other guide portion 11b. By moving the lock member 13 together with the base material to the one guide portion 11a, the lock member 13 is moved to the one guide portion 11a.
It is characterized in that a close portion 15 which is in close contact with each other is formed.

That is, the invention according to the present claim is similar to the above-mentioned claim 1 in that the guide portion 11 inside the reclining device 100 is heated and pressed to form the close contact portion 15. It is characterized in that the heating process and the press process are performed on different guide portions 11, respectively. That is, the reclining device 100 according to the present invention includes, among the pair of guide portions 11 forming the guide groove 12 in which the lock member 13 is arranged,
This means that the one guide portion 11a is heated and the other guide portion 11b is pressed almost at the same time.

When the one guide portion 11a is heated, the temperature of the base material forming the guide portion 11a rises, and the base material forming the guide portion 11a is softened. The other guide portion 11b is pressed at substantially the same time as the heating of the guide portion 11a, and the base material forming the other guide portion 11b is deformed to move toward the lock member 13. The base material of the other guide portion 11b pushes out the lock member 13, and the one guide portion 11a is pressed by the lock member 13. The one guide portion 11a is softened by the temperature rise of the base material due to the heating process, and the one guide portion 11a is pressed by pressing the lock member 13 against the one softened guide portion 11a. Part 1 closely to 11a
5 will be formed.

Therefore, according to the invention of this claim,
Similar to the invention according to claim 1, it is possible to prevent the guide portion 11 from tightly fitting with the lock member 13, and it is possible to surely bring the guide portion 11 into close contact with each other even if the formation dimensions of these members vary. At the same time, when the one guide portion 11a is subjected to the thermal processing, the other guide portion 11b can be subjected to the press processing almost at the same time, so that the manufacturing efficiency of the reclining device 100 can be improved. .

Next, the invention according to claim 3 is the reclining device 100 for a vehicle seat according to claim 1 or 2.
In the above, the close contact portion 15 formed on the guide portion 11 covers substantially the entire length of the portion where the lock member 13 and the guide portion 11 abut each other when the lock member 13 is engaged with the tooth portion 22 of the tooth plate 20. It is characterized by becoming close.

That is, in the reclining device 100 of the invention according to the present invention, the close contact portion 15 is formed over substantially the entire length of the portion where the lock member 13 and the guide portion 11 contact each other.

In other words, by bringing the lock member 13 and the guide portion 11 into close contact with each other on the “faces”, even when a load is applied to the reclining device 100, the lock member 13 and the guide portion 11 are not contacted with each other. Thus, it is possible to avoid local concentration of the load.

Therefore, according to the invention according to the present claim, since the guide portion 11 and the lock member 13 are in close contact with each other in the “faces”, the “guide portion 11” or the “lock” in the reclining device 100. It is possible to improve the durability of the member 13 "or both of them.

The invention according to claim 4 is the reclining device 10 for a vehicle seat according to any one of claims 1 to 3.
0, prior to heating the guide portion 11 where the close contact portion 15 is formed, the guide portion 11 and the guide portion 11 are heated.
The amount of heat conducted from the guide portion 11 to the lock member 13 is suppressed by applying grease to a portion where the lock member 13 arranged adjacent to the lock member 13 abuts each other. To do.

That is, in the reclining device 100 of the present invention according to the present invention, after applying the grease to the surfaces where the guide portion 11 and the lock member 13 adjacent to the guide portion 11 are in contact with each other, the guide portion 11 is removed. By heating, the heat applied to the guide portion 11 is applied to the guide portion 1
It is possible to prevent direct conduction to the lock member 13 adjacent to 1.

Therefore, according to the invention of this claim,
Guide part 1 heated to form the "close contact part 15"
By suppressing heat conduction from 1 to the lock member 13 adjacent to the guide portion 11, the lock member 1
It is possible to prevent the "decarburization" of No. 3.

The invention according to claim 5 is a vehicle seat having a seat cushion, a seat back, and a reclining device 100, wherein the seat back can be tilted. 4. The reclining device 100 according to any one of 4 above.
It is characterized by being.

That is, the vehicle seat of the invention according to the present invention is mounted with the reclining device 100 according to any one of the above-mentioned claims 1 to 3, so that the seat back is swung back and forth. Thus, it is possible to provide a vehicle seat capable of surely reclining the seat back without causing backlash.

In the invention according to claim 6, the base plate 10 fixed to the seat cushion side and the tooth plate 20 fixed to the seat back side are rotatably attached to the tooth plate 20. A concave portion 21 is formed on the surface of the concave portion 21, a tooth portion 22 is provided on the inner peripheral surface of the concave portion 21, and at least a pair of guide portions 11 are provided on the base plate 10, and between the pair of guide portions 11. Is formed with a guide groove 12, and a lock member 13 is slidably arranged in the guide groove 12 so as to advance and retreat with respect to a tooth portion 22 of the tooth plate 20, and the lock member 13 is advanced and retracted by an operating member. Thus, the engagement and disengagement with respect to the tooth portion 22 is operated to control the coaxial rotation of the tooth plate 20 with respect to the base plate 10. Reclining of dual-use seat apparatus 1
00, the base material forming at least one guide part 11 of the pair of guide parts 11 in a state where the lock member 13 is sandwiched is heated to be softened, and the softened base material is pressed. By moving the base material toward the lock member 13 by doing,
The guide portion 11 is characterized in that a close contact portion 15 that is in close contact with the lock member 13 is formed.

The backlash preventing method according to the present invention exists between the guide portion 11 and the lock member 13 by deforming the guide portion 11 in the reclining device 100 to form the "close contact portion 15". This is a method of filling the "gap S".

In this method, the base material forming the guide portion 11 is softened by heating the guide portion 11 before deforming the guide portion 11.
The base material is softened and then pressed by a pressing machine or the like to "move the meat" toward the lock member 13.

According to this method, since the base material forming the guide portion 11 is softened, by pressing and deforming the base material, the guide portion 11 becomes substantially the actual size of the lock member 13. It is possible to remold with the combined dimensions. Therefore, even if there are variations in the formation dimensions of the guide portion 11 and the lock member 13, it is possible to reliably bring them into close contact with each other by performing processing under certain conditions.

Further, according to the method of the present invention according to the present invention, since the base material forming the guide portion 11 is softened when pressed by the press machine, it is pressed by the press machine to "flesh movement (deformation)". ) ”, The guide portion 11 is prevented from pressing the lock member 13 more than necessary.

Therefore, according to the present invention, the guide portion 11 is prevented from tightly fitting with the lock member 13, and the guide portion 11 is surely brought into close contact even if there are variations in the formation dimensions of these members. It is possible to make it. Further, by softening the guide portion 11, it is possible to deform the guide portion 11 with a small weight, so that the press machine used in the manufacturing process can be downsized.

According to the seventh aspect of the present invention, the base plate 10 fixed to the seat cushion side and the tooth plate 20 fixed to the seat back side are rotatably attached to the tooth plate 20. A concave portion 21 is formed on the surface of the concave portion 21, a tooth portion 22 is provided on the inner peripheral surface of the concave portion 21, and at least a pair of guide portions 11 are provided on the base plate 10, and between the pair of guide portions 11. Is formed with a guide groove 12, and a lock member 13 is slidably arranged in the guide groove 12 so as to advance and retreat with respect to a tooth portion 22 of the tooth plate 20, and the lock member 13 is advanced and retracted by an operating member. Thus, the engagement and disengagement with respect to the tooth portion 22 is operated to control the coaxial rotation of the tooth plate 20 with respect to the base plate 10. Reclining of dual-use seat apparatus 1
00, the base material forming one guide portion 11a of the pair of guide portions 11 in a state where the lock member 13 is sandwiched is heated and softened, and the other guide portion 11b is formed. Pressing the base material to move the base material toward the lock member 13, and move the lock member 13 toward the one guide portion 11a together with the base material forming the other guide portion 11b. Thus, the contact portion 15 that is in close contact with the lock member 13 is formed on the one guide portion 11a.

That is, the invention according to the present claim is similar to the above-mentioned claim 6 in that the guide portion 11 inside the reclining device 100 is heated and pressed to form the close contact portion 15. It is characterized in that the heating process and the press process are performed on different guide portions 11, respectively. That is, in the play preventing method according to the present invention, of the pair of guide portions 11 forming the guide groove 12 in which the lock member 13 is arranged, one guide portion 11a is heated at substantially the same time as the other guide portion 1a is heated.
The 1b is to be pressed.

By heating the one guide portion 11a, the temperature of the base material forming the guide portion 11a rises, and the base material forming the guide portion 11a is softened. The other guide portion 11b is subjected to press working almost at the same time as the heating of the guide portion 11a to deform the base material forming the other guide portion 11b and move the meat toward the lock member 13. The base material related to the other guide portion 11b pushes out the lock member 13, and the lock member 13 is moved to the one guide portion 11a.
Press. The temperature of the base material of the one guide portion 11a is increased by the heating process and is softened, and the one guide portion 11a is pressed by pressing the lock member 13 against the softened one guide portion 11a. Close to part 1
5 is to be formed.

Therefore, according to the invention of this claim,
Similarly to the invention according to claim 6, it is possible to prevent the guide portion 11 from tightly fitting with the lock member 13, and to securely bring the guide portion 11 into close contact with each other even if the formation dimensions of these members vary. At the same time, when the one guide portion 11a is subjected to the heat processing, the other guide portion 11b can be subjected to the press processing almost at the same time, so that the efficiency of the backlash preventing processing of the reclining device 100 can be improved. Of.

The invention according to claim 8 is the contact preventing portion 1 formed in the guide portion 11 in the backlash preventing method for the vehicle seat reclining device 100 according to claim 6 or 7.
5, the lock member 13 is the tooth portion 22 of the tooth plate 20.
When the lock member 13 and the guide portion 11 are engaged with each other, the lock member 13 and the guide portion 11 are brought into close contact with each other over substantially the entire length thereof.

That is, in the backlash preventing method of the invention according to the present invention, the lock member 13 and the guide portion 11 are brought into close contact with each other over substantially the entire length thereof.

That is, by bringing the lock member 13 and the guide portion 11 into close contact with each other on the “faces”, even when a load is applied to the reclining device 100, the lock member 13 and the guide portion 11 are prevented from contacting each other. Thus, it is possible to avoid local concentration of the load.

Therefore, according to the invention of this claim, since the guide portion 11 and the lock member 13 are brought into close contact with each other in the “faces”, the “guide portion 11” or the “lock member 13” in the reclining device 100. It is possible to improve the durability of both or both.

The invention according to claim 9 is the reclining device 10 for a vehicle seat according to any one of claims 6 to 8.
In the backlash prevention method of 0, the portion in which the guide portion 11 and the lock member 13 disposed adjacent to the guide portion 11 abut each other prior to heating the guide portion 11 in which the close contact portion 15 is formed. It is characterized in that the amount of heat conducted from the guide portion 11 to the lock member 13 is suppressed by applying grease thereto.

That is, in the backlash preventing method of the invention according to the present invention, after applying the grease to the surfaces where the guide portion 11 and the lock member 13 adjacent to the guide portion 11 abut against each other, the guide portion 11 is removed. By heating, the heat applied to the guide portion 11 can be prevented from being directly transmitted to the lock member 13 adjacent to the guide portion 11.

Therefore, according to the present invention, the heat transfer to the lock member 13 adjacent to the heated guide portion 11 is suppressed, so that the lock member 13 can be prevented.
It is possible to prevent "decarburization".

[0052]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will now be described with reference to the drawings along with preferred embodiments which will be described later.

The present invention relates to a reclining device 100 for a vehicle seat, when mounted on the vehicle seat,
The present invention provides a "reclining device 100" that can prevent the occurrence of "backlash" even when the seat back is rocked, and this "backlash prevention method".

Here, the "reclining device 100" in the present invention is as follows. That is, first, the "base plate 1" which is fixed to the seat cushion side
0 "and the" tooth plate 20 "fixed to the seat back side are rotatably attached to the shaft. The tooth plate 20 has a "recess 21" formed on one surface thereof, and the inner peripheral surface of the recess 21 is provided with "teeth 22". On the other hand, the base plate 10 is provided with at least a pair of "guide portions 11", and a "guide groove 12" is formed between the pair of guide portions 11.
A "lock member 13" is slidably arranged in the guide groove 12 so as to advance and retract with respect to the tooth portion 22 of the tooth plate 20. And the lock member 1
By moving the 3 forward and backward with the operating member, the engagement and disengagement with respect to the tooth portion 22 is operated, and the coaxial rotation of the tooth plate 20 with respect to the base plate 10 is controlled.

In such a reclining device 100, a vehicle seat in which a seat cushion and a seat back are connected may cause "backlash" when the seat back is swung in the front-rear direction. The cause of this "backlash" is that there is a "gap S" between the "guide portion 11" and the "lock member 13" inside the reclining device 100.

That is, even if the "gap S" is a very small interval inside the reclining device 100, the "backlash S" can be felt by the seat back mounted on the reclining device 100. It may be converted to and appear. That is, when the seat back fixed to the tooth plate 20 is rotated around the pivot point of the reclining device 100 as a fulcrum, the movement due to the rotation at a position near the fulcrum is extremely small. This is also because the movement due to the rotation at a position away from the fulcrum becomes large. If the "gap S" exceeds a certain width, it also affects the riding comfort. In addition, other factors such as “bending of constituent members” such as a reclining device and a seat back also exist in the occurrence of the “backlash”.

In the present invention, by forming the "close contact portion 15" with respect to the guide portion 11 in the reclining device 100, the gap S between the guide portion 11 and the lock member 13 is filled, and the above "backlash" is generated. Is to prevent.
And when forming the above-mentioned "close contact portion 15",
The base material forming the guide portion 11 is heated to be softened,
After that, the base material is deformed by being pressed and "moved meat" toward the lock member 13.

That is, this "movement of the meat" means that the guide member 11 is fitted in the guide groove 12 between the guide members 11 of the base plate 10.
The base material forming the base material is heated to be softened, and then pressed against the base material with an appropriate load, whereby the base material heated in the “gap S” between the guide portion 11 and the lock gear is It means flowing in. By this method,
The "gap S" can be filled without applying "load" such as locally concentrated pressure to the lock member 13, and thus "backlash" is not generated in the vehicle seat in which the reclining device is mounted. Will be prevented.
Further, as described above, by heating the base material, the base material is softened, so that it is possible to reduce the pressing load that deforms the base material.

Specifically, first, the base material forming the guide portion 11 is heated to about 1,000 ° C. to be softened.
Then, after or at the same time as heating the base material,
By applying a pressing load through the jig, it becomes possible to deform the base material and “move the meat” toward the lock member 13. In the experiment described below, about 480 kg is sufficient as the press load applied when "moving meat", and this load can be supplied by the air cylinder. The degree of deformation obtained in the experiment described below corresponds to the case where a base material at room temperature is deformed by applying a pressing load of about 9,000 kg through a jig of the same shape. When the press working is performed at a normal temperature with a load of about 9,000 kg, the guide portion 11 presses the lock member 13 with a strong pressure, so that the lock member 13 is guided by the guide groove. It is added that it is difficult to move (slide) within 12 and the object of the present invention cannot be achieved.

Here, it is conceivable that a "resistance welding machine (spot projection welding machine)", a "high frequency induction heating device" or the like is used as a means for heating the base material, which will be described below.

First, "resistance welding machine (spot welding machine)"
The case of using will be described together with the experimental results shown in Table 1.

In this experiment, the resistance welding machine (155 kV) was used.
A spot projection welding machine) is used, and a substantially rectangular electrode (jig) having a length of 20 mm and a width of 5 mm is used for the reclining device 100.
The guide portion 11 of the above. 10,000A there
While energizing with the current of 0.72 seconds,
It was pressed for 1.5 seconds with a press load of 480 kg.

The "guide groove" in Table 1 is a space between the pair of guide portions 11, and the lock member 13 is slidably arranged in the guide groove 12. Further, the "gap before movement of meat" in Table 1 is a numerical value obtained by subtracting the width dimension of the "lock member" from the width dimension of the "guide groove". The "gap after movement of meat" in Table 1 indicates the size of the gap between the two members when the "contact portion" is formed by processing the guide portion.

As is clear from the results of this experiment, by heating and pressing the guide portion 11 to deform it, no matter what width dimension the gap S is between the guide portion 11 and the lock member 13, By processing under the "same condition", it is possible to reliably bring the "faces" into close contact with each other.

[0065]

The resistance welding machine used in this experiment was equipped with a pressing device. Therefore, by energizing the electrode abutting on the guide portion 11,
It is also possible to deform the base material by heating the base material forming the and applying a pressing load to the electrode. Of course, if the heat of the guide portion 11 is not reduced, the "heating" and the "pressing" may be performed by separate devices.

Next, the case of using the "high frequency induction heating device" will be described together with the experimental results shown in Tables 2 and 3.

In the high frequency induction heating apparatus used in the present invention, first, a coil is wound around "ferrite" which is a jig for heating, and a high frequency current is passed through this coil to concentrate the magnetic flux on the ferrite. Let Next, by arranging the ferrite which emits this strong magnetic flux in the guide portion 11 which is a processing portion, the guide portion 1
A current is generated in the metal forming 1. This guide part 1
Since the metal forming 1 has an electrical “resistance”, the metal itself generates heat due to the “resistance”.

With this high-frequency induction heating device, the guide portion 11
When heating is performed, it becomes possible to control the heating temperature at ± 20 ° C. For example, when heated for 0.95 seconds, the temperature of the guide portion 11 rises to about 600 ° C.,
When heated for 1.05 seconds, the temperature of the guide portion 11 rises to about 700 ° C. Further, when heated for 1.15 seconds, the temperature of the guide portion 11 rises to about 800 ° C, and when heated for 3.5 seconds, the temperature of the guide portion 11 rises to about 1,100 ° C. Becomes The relationship between the heating time and the temperature rise in the guide portion 11 is shown in more detail in Table 2 below.

Table 2 shows the results of an experiment in which the guide portion 11 was heated by the high frequency induction heating device.
In this experiment, the relationship between "the length of the heating time" and "the width of the gap S" is shown. In this experiment, all the press working conditions were constant, and the conditions were a length of 20 mm,
A substantially rectangular jig having a width of 1 mm is brought into contact with the guide portion 11 of the reclining device 100,
It was pressed under a press load of 0.35 Mpa for 2 seconds.

In the experiment shown in Table 2, from 1.8 seconds to 2.0
It has been found that the temperature of the guide portion 13 is raised to about 950 ° C. by heating for a second, and then the press working is performed under the above conditions, which enables favorable “hot” movement of meat. By moving the meat while hot, there is no "play" between the guide portion 11 and the lock member 13, and there is a gap enough to allow the lock member 13 to slide in the guide groove 12. S
Can be packed.

If the heating time is 1.6 seconds or less, the temperature rise of the guide portion 11 will be insufficient, and even if press working is performed there, the meat will move "coldly". When the meat is moved cold in this way, the guide portion 11 strongly presses the lock member 13, so that the lock member 13 can be slid in the guide groove 12. It will be impossible.

On the other hand, even if the heating time is 2.0 seconds or more, the meat can be moved hot, but the temperature of the guide portion 11 rises more than necessary, and the guide portion 1 concerned.
Since the base material forming the guide portion 11 contracts more than necessary after "moving the meat" of 1, the gap S between the guide portion 11 and the lock member 13 is expanded after the meat movement. . In such a case, it is possible to prevent excessive contraction by injecting cold air toward the guide portion 11 to rapidly cool the guide portion 11 after moving the guide portion 11.

[0074]

Next, the experiment according to Table 3 will be described.
In this experiment, "the size of the press load" and "the width of the gap S"
Represents the relationship with. In this experiment, all the conditions other than the press load were constant, and the condition was that after heating for 2 seconds with the high-frequency induction heating device, the length 2
A substantially rectangular jig having a size of 0 mm and a width of 1 mm is brought into contact with the guide portion 11 of the reclining device 100 and is pressed with a predetermined press load for 2 seconds.

According to the experiment shown in Table 3, it is considered preferable to perform the press working under a load of about 2,100 kg under the above conditions. It should be noted that the press load of about 1,900 kg or less cannot sufficiently move the meat, and the press section of about 2,500 kg or more causes the guide portion 11 to strongly press against the lock member 13. It has been found that it becomes difficult to slide 13 in the guide groove 12.

[0077]

According to the experiments relating to Tables 2 and 3 described above,
When the base material of the guide portion 11 in the reclining device 100 is “moved to the meat”, it is heated by a high frequency induction heating device for 2.0 seconds to raise the temperature of the base material to 950 ° C.
It has been found suitable to raise the temperature and then to deform by applying a pressing load of about 2,100 kg for 2 seconds.

Since the high-frequency induction heating device does not have a pressing mechanism, the guide part 11 is deformed by heating the guide part 11 and immediately pressing it with another pressing device.

In the above description, at least one guide portion 11 of the pair of guide portions 11 is heated and pressed to move the meat toward the lock member 13. The present invention is not limited to this, and the “heating process” and the “pressing process” may be performed on different guide portions 11, respectively. That is, of the pair of guide portions 11 forming the guide groove 12 in which the lock member 13 is arranged, one guide portion 11a is heated at substantially the same time as the other guide portion 1a is heated.
1b is pressed.

When the one guide portion 11a is heated, the temperature of the base material forming the guide portion 11a rises, and the base material forming the guide portion 11a is softened. The other guide portion 11b is pressed at substantially the same time as the heating of the guide portion 11a, and the base material forming the other guide portion 11b is deformed to move the meat toward the lock member 13. The base material of the other guide portion 11b pushes out the lock member 13, and the one guide portion 11a is pressed by the lock member 13. The one guide portion 11a is softened by the temperature rise of the base material due to the above-mentioned heat processing, and the lock member 13 is pressed against the one softened guide portion 11a, whereby the one guide portion 11a is pressed. Thus, the close contact portion 15 is formed on 11a.

By this method, one guide portion 11a
When the heat processing is performed on the first guide portion 11b, the other guide portion 11b can be pressed at the same time, so that the processing efficiency can be improved.

Furthermore, since heat is applied to the base material forming the guide portion 11, the heat is also conducted to the lock member 13 adjacent to the guide portion 11. When heat is conducted to the lock member 13, the material of the lock member 13 may be deteriorated due to "decarburization" or other factors.

Therefore, in order to prevent such deterioration of the material, it is necessary to suppress the conduction of heat to the portion where the guide portion 11 and the lock member 13 are in contact with each other.
As a means for suppressing such heat conduction, in the present invention, it is conceivable to apply "grease" to the contact portion between both members (in particular, the "side portion" of the lock member 13). By applying the “grease”, it is possible to prevent direct heat conduction from the guide portion 11 to the lock member 13,
The deterioration of the material forming the locking member 13 can be minimized. This grease is very suitable because it can be used as a lubricating oil that helps the lock member 13 to slide in the guide groove 12 when the reclining device 100 becomes a product.

By cooling the heat conducted to the lock member 13 by the cooling means, the lock member 1
The deterioration of No. 3 may be prevented. Specifically, a "copper block" is arranged in contact with the surface of the lock member 13 arranged adjacent to the guide portion 11 to be heat-processed,
It is conceivable that the heat conducted to the lock member 13 is effectively cooled by inserting a copper tube into the copper block and circulating cold water in the copper tube. Alternatively, cooling may be performed by injecting cool air to the lock member 13.

In addition, as a means for heating the guide portion 11, it is also preferable to use a "laser heating device" for heating by irradiating an electron beam.

The "close contact portion 15" in the present invention is formed so that the guide portion 11 and the lock member 13 are in contact with each other at "faces". In this way, the pressure generated between the respective members can be dispersed by bringing the “faces” into contact with each other, and it is possible to prevent the pressure from being locally concentrated. Therefore, it becomes possible to improve the durability of each of these members.

When the "close contact portion 15" is formed by heating and pressing as described above, "a feeling of being caught" may occur between the lock member 13 and the guide portion 11.
In this case, before the heat of the heated guide portion 11 is cooled, the lock member 13 is slid several times to perform "leveling", so that the "feeling of catching" can be removed. In this respect, in the present invention, since the portion is heated before the guide portion 11 is deformed, the guide portion 11 itself may slightly contract as the heated heat of the guide portion 11 cools. Becomes Therefore, it is possible to smoothly slide with less "leveling" than the conventional technique.

Preferred embodiments of the present invention will be described below. (Embodiment) First, FIGS. 1 and 2 show a reclining device 100 according to the present invention.

In the reclining device according to this embodiment, the tooth plate 20 is pivotally attached to the base plate 10 via a shaft.

The tooth plate 20 is fixed to the seat back side of the vehicle seat, and a recess 21 is formed on one surface thereof that comes into contact with the base plate 10. In the present embodiment, the recess 21 is formed in a substantially fan shape with the portion through which the shaft is inserted as a "key", and the arc-shaped peripheral surface of the substantially fan-shaped recess 21 has teeth protruding inward. The portion 22 (internal teeth) is provided. In this embodiment, an arm is connected to the tooth plate 20 and a seat back (not shown) is fixed to the arm, but of course, the tooth plate 20 is not provided with the arm. Alternatively, the seat back may be directly installed.

On the other hand, the base plate 10 is fixed to the seat cushion side of the vehicle seat and has at least a pair of "guide portions 11". The space between the pair of guide portions 11 is formed as a "guide groove 12", and the "lock member 13" is arranged in the guide groove 12. The lock member 13 is provided with a "lock tooth 14" that engages with the tooth portion 22 at the tip end portion thereof. It is arranged slidably with respect to. The tips of the lock teeth 14 are formed with a curvature that is substantially the same as the curvature of the tooth portion 22 (inner tooth).
It becomes possible to engage with. Then, the lock member 13
Is pressed by the head portion of the cam member at the end portion opposite to the lock tooth 14, so that the tooth portion 22 of the tooth member is pressed.
(Internal teeth) will be engaged. The lock member 1
3 is provided with a protrusion at the end facing the lock tooth 14. This protrusion engages with the “projection piece” of the cam member, and when the cam member rotates to release the “push up” to the lock member 13, the lock member 13 is moved in the shaft direction. It is to lower. The cam member is mounted on the shaft together with the base plate 10, the tooth plate 20, and the operating lever member.

The shaft has a substantially oval cross section on one end side and is inserted into a substantially oval hole formed in the base plate 10 to fix the rotation of the shaft. The other end side of the shaft is formed by gradually changing the thickness, and the operation lever member is pivotally supported at the central portion, and the tooth plate 20 is pivotally supported at the other end side that penetrates the tooth plate 20. The innermost portion of the spiral spring is gripped by the "groove" at the endmost portion. The outer end portion of this spiral spring is projected on the tooth plate 20 and is locked by a pin protruding outward to prevent the spiral spring from being pulled out. With this structure, the tooth plate 20 is biased in a fixed direction with respect to the base plate 10.

A plate-like body connected by a pin inserted into the connecting hole is fixed to the upper end of the tooth plate 20, and the plate-like body is slidably contacted with the arc-shaped outer extension of the base plate 10 and the base plate 10 and the tooth plate. 20 and 20 are pressed so as not to separate from each other. In other words, the plate-like body is formed with an arcuate step portion that is in sliding contact with the arcuate extension in a predetermined range. The plate-like member is fixed to the tooth plate 20 by a pin penetrating the connecting hole and the connecting hole of the tooth plate 20, and the pin penetrates the connecting hole, the hole of the arm and the connecting hole of the plate-like member to share them. Tighten.

Next, the lock member 13 is moved to the guide portion 11
The structure sandwiched between the parts will be described in detail with reference to FIGS.

Originally, it is preferable that the gap S between the lock member 13 and the guide portion 11 is small. However, as described above, since each member constituting the reclining device is generally formed by a molded product, its formation. The dimensions may vary.

Therefore, the reclining device 100 according to the present embodiment heats the base material forming the guide portion 11 and, after that, presses the base material to "flesh movement".
(Deformation) is performed to form the close contact portion 15 to fill the gap S with the lock member 13.

Specifically, as shown in FIG. 3, the lock member 1 is inserted into the guide groove 12 formed of a pair of guide portions 11.
3 is slidably arranged so that the lock member 13 is held between the pair of guide portions 11. At that time, the lock member 13 is placed in the sliding range within the guide groove 12 and
3 must be placed in the position where it would be closest to the tooth plate 20. That is, the reclining device 100
In the normal use state of the
This is because "backlash" may occur when it is engaged with the.

Then, as shown in FIG. 3, electrodes (jigs) are brought into contact with the base material forming one (or both) of the pair of guide portions 11 from above and below and heated by a resistance welding machine. To soften. After that, the heated base material is pressed by a pressing machine to be deformed (crushed), so that the base material is "moved to the side of the gap S".

Therefore, as shown in FIGS. 2 and 4, the base material constituting the processed guide portion 11 of the base plate 10 moves until it comes into contact with the side portion of the lock member 13, and the gap S at that portion is formed. Is eliminated or becomes extremely small, and the "close contact portion 15" is formed.

Here, the electrodes (jigs) installed in the resistance welding machine and used for heating and pressing will be described. In this embodiment, the electrode is heated and pressed over substantially the entire length of the portion where the lock member 13 and the guide portion 11 abut each other at the position where the lock member 13 engages with the tooth portion 22 of the tooth plate 20. It is formed in a shape that allows it. Specifically, it is formed in a substantially rectangular shape having a length of 20 mm and a width of 5 mm, and can be brought into contact with the shaded portion in FIG.

Since the above-mentioned "movement of meat" can be performed for a specific pair of the base plate 10 and the lock member 13 in the assembly line of the seat reclining device 100, high accuracy can be obtained. Further, it is also possible to use a dummy member having the same size as the lock member 13 instead of the lock member 13 at the time of correcting the play.

Next, the seat reclining device 100 described above.
The operation of will be described. First, when the operation lever member is rotated (pulled up) in the clockwise direction in the drawing, the cam member pivotally attached to the shaft is rotated.
When the cam member rotates, the “pushing up” of the head portion of the cam member to the lock member 13 is released, and the projection piece of the cam member engages with the projection portion of the lock member 13, and the lock member 13 Will be pulled down in the shaft direction, and the engagement of the lock tooth 14 with the tooth portion 22 will be released. The tooth plate 20 is released from the lock member 1 by releasing the engagement with the tooth portion 22.
The tooth plate 20 is released from the fixing by 3, and is rotated coaxially with respect to the base plate 10 by the bias of the spiral spring. Then, when the tilt angle of the seat back is determined and the operation lever member is released, the operation lever member returns to the original position by the force of the coil spring. Then, the cam member rotates in the counterclockwise direction in the drawing, the protruding piece thereof separates from the protruding portion of the lock member 13, and the head of the cam member contacts the lower end of the lock member 13 and pushes it upward. Slide it. As a result, the lock teeth 14 are engaged with the tooth portions 22,
The coaxial rotation of the tooth plate 20 with respect to the base plate 10 is fixed.

Therefore, when the coaxial rotation of the tooth plate 20 with respect to the base plate 10 is fixed,
Even if a high load is generated on the seat back, the lock member 13 comes into close contact with the close contact portion 15 formed in the guide portion 11 “face to face”. Therefore, it is possible to prevent the occurrence of "backlash" due to the gap between the members, and to prevent the local concentration of the pressure between the guide portion 11 and the lock member 13, thereby improving the durability of each member. Will be improved.

In this embodiment, tooth portions 22 (inner teeth) formed on the circumferential surface of the arc portion of the substantially fan-shaped recess 21 formed in the tooth plate 20 are provided. However, the present invention is not limited to this. The invention is not particularly limited to this embodiment, and for example, a “circular reclining device” in which the recess 21 of the tooth plate 20 is formed in a circular shape and internal teeth are formed on all the inner peripheral surfaces of the circular recess 21. May be applied to.

Further, the present invention may be applied to an electric reclining device to prevent the occurrence of "backlash". That is, the electric reclining device rotates the tooth plate 20 by rotating the worm gear that engages with the tooth portion 22 provided on the tooth plate 20. At this time, by sandwiching the worm gear between the guide portions 11 and performing the above-mentioned “heating” and “pressing” processing on the guide portions 11,
The gap between the worm gear and the guide portion 11 is filled. With this configuration, in the rotatable state of the worm gear, it is possible to fill the "backlash" in the axial direction of the worm gear, and thus the tooth plate 2
It is possible to prevent "backlash" in the front-rear direction in the seat back fixed to 0.

[0107]

According to the first aspect of the present invention, the base plate fixed to the seat cushion side and the tooth plate fixed to the seat back side are rotatably mounted on the shaft. A recess is formed on one surface, teeth are provided on the inner peripheral surface of the recess, at least a pair of guides are provided on the base plate, and a guide groove is formed between the pair of guides. Is
A lock member is slidably arranged in the guide groove so as to move forward and backward with respect to the tooth portion of the tooth plate,
In a reclining device for a vehicle seat, which controls engagement / disengagement with respect to the tooth portion by advancing / retreating the lock member with an operating member, to control coaxial rotation by the tooth plate with respect to the base plate, Of the pair of guide parts in the sandwiched state, the base material forming at least one guide part is heated to be softened, and the softened base material is pressed to move the base material toward the lock member. By so doing, the contact portion, which is in close contact with the lock member, is formed in the guide portion, which is a characteristic feature of the configuration.

According to the invention of this claim, it is possible to prevent the guide portion from tightly fitting with the lock member, and to surely bring them into close contact with each other even if there are variations in the forming dimensions of these members. The effect is that it becomes possible.

Next, in the invention according to claim 2, a base plate fixed to the seat cushion side and a tooth plate fixed to the seat back side are rotatably attached to the tooth plate. A concave portion is formed on the surface of the concave portion, a tooth portion is provided on the inner peripheral surface of the concave portion, at least a pair of guide portions is provided on the base plate, and a guide groove is formed between the pair of guide portions. ,
A lock member is slidably arranged in the guide groove so as to move forward and backward with respect to the tooth portion of the tooth plate,
In a reclining device for a vehicle seat, which controls engagement / disengagement with respect to the tooth portion by advancing / retreating the lock member with an operating member, to control coaxial rotation by the tooth plate with respect to the base plate, Among the pair of guide portions in the sandwiched state, the base material forming one guide portion is heated and softened, and the base material forming the other guide portion is pressed to cause the base material to the lock member. By moving the lock member toward the one guide portion together with the base material forming the other guide portion, the one guide portion is brought into close contact with the lock member. It is characterized by the fact that it is formed.

According to the invention of this claim, it is possible to prevent the guide portion 11 from tightly fitting with the lock member 13, and to securely bring the guide portion 11 into close contact with each other even if the formation dimensions of these members vary. Since it is possible to heat the one guide portion 11a and to press the other guide portion 11b almost at the same time, it is possible to improve the manufacturing efficiency of the reclining device 100. The effect is that

According to a third aspect of the present invention, in the reclining device for a vehicle seat according to the first or second aspect, the contact portion formed in the guide portion is in a state in which the lock member is engaged with the tooth portion of the tooth plate. The characteristic feature of the structure is that the lock member and the guide portion are in close contact with each other over substantially the entire length of the contact portion.

According to the invention of this claim, since the guide portion and the lock member are in close contact with each other in the “faces”, the “guide portion” or the “lock member” or both of them in the reclining device. The effect is that it is possible to improve the durability of the.

According to a fourth aspect of the present invention, in the reclining device for a vehicle seat according to any one of the first to third aspects, prior to heating the guide portion in which the close contact portion is formed, the guide portion and the guide portion The amount of heat conducted from the guide portion to the lock member is suppressed by applying grease to a portion where the lock member disposed adjacent to the guide portion abuts each other, and the structure thereof is provided. It has the above characteristics.

Further, according to the invention of this claim, it is possible to prevent "decarburization" of the lock gear by suppressing the transfer of heat to the lock gear adjacent to the heated guide portion. It has an effect.

The invention according to claim 5 is a vehicle seat having a seat cushion, a seat back and a reclining device, wherein the seat back can be tilted. The reclining device according to any one of the above is characterized by its configuration.

According to the invention of this claim, there is provided a vehicle seat capable of reliably reclining the seat back without causing backlash even if the seat back is rocked back and forth. It has the effect of being able to do it.

In the invention according to claim 6, a base plate fixed to the seat cushion side and a tooth plate fixed to the seat back side are rotatably attached to the shaft, and the tooth plate has one surface thereof. A recess is formed,
A tooth portion is provided on the inner peripheral surface of the concave portion, at least a pair of guide portions is provided on the base plate, and a guide groove is formed between the pair of guide portions, and a lock member is provided in the guide groove. Is slidably arranged to advance and retreat with respect to the tooth portion of the tooth plate, and the engagement and disengagement with respect to the tooth portion is operated by advancing and retreating the lock member with the operating member, and the tooth plate with respect to the base plate is operated. In a backlash prevention method for a vehicle seat reclining device that controls rotation on the same axis, a base material forming at least one guide portion is heated by heating the base material of the pair of guide portions in a state of sandwiching the lock member. By softening and pressing the softened base material to move the base material toward the lock member, Against part, to forming a close contact portion in close contact with each other and the locking member, and it has the characteristics of its construction.

According to the invention of this claim, it is possible to prevent the guide portion from tightly fitting with the lock member, and to surely bring them into close contact with each other even if there are variations in the formation dimensions of these members. The effect is that it becomes possible.

According to a seventh aspect of the present invention, a base plate fixed to the seat cushion side and a tooth plate fixed to the seat back side are rotatably supported by a shaft, and the tooth plate has one surface on one side thereof. A recess is formed,
A tooth portion is provided on the inner peripheral surface of the concave portion, at least a pair of guide portions is provided on the base plate, and a guide groove is formed between the pair of guide portions, and a lock member is provided in the guide groove. Is slidably arranged to advance and retreat with respect to the tooth portion of the tooth plate, and the engagement and disengagement with respect to the tooth portion is operated by advancing and retreating the lock member with the operating member, and the tooth plate with respect to the base plate is operated. In a backlash preventing method for a vehicle seat reclining device that controls rotation on the same axis, a base material forming one of the pair of guide portions sandwiching the lock member is heated and softened. While pressing, the base material forming the other guide portion is pressed to move the base material toward the lock member,
By moving the lock member toward the one guide portion together with the base material forming the other guide portion,
Forming a close contact portion that is in close contact with the lock member on one of the guide portions has a characteristic feature of the configuration.

According to the invention of this claim, it is possible to prevent the guide portion 11 from tightly fitting with the lock member 13 and to surely bring them into close contact with each other even if there are variations in the formation dimensions of these members. Since it is possible to heat the one guide portion 11a and to press the other guide portion 11b at substantially the same time,
Thus, it is possible to improve the efficiency of the backlash preventing process of the reclining device 100.

According to an eighth aspect of the present invention, in the backlash preventing method for a vehicle seat reclining device according to the sixth or seventh aspect, in the contact portion formed in the guide portion, the lock member is a tooth portion of the tooth plate. In the engaged state, the lock member and the guide portion are brought into close contact with each other over substantially the entire length of the portion in which the lock member and the guide portion are in contact with each other.

According to the invention of this claim, since the guide portion and the lock member are in intimate contact with each other in the “faces”, the durability of the “guide portion” and / or the “lock member” in the reclining device is improved. Therefore, it is possible to improve the property.

According to a ninth aspect of the present invention, in the method for preventing backlash of a reclining device for a vehicle seat according to any of the sixth to eighth aspects, prior to heating the guide portion where the close contact portion is formed, By suppressing the amount of heat conducted from the guide portion to the lock member by applying grease to the portion where the guide portion and the lock member arranged adjacent to the guide portion contact each other, It has its structural characteristics.

According to the invention of this claim, it is possible to prevent "decarburization" of the lock gear by suppressing the transfer of heat to the lock gear adjacent to the heated guide portion. It has an effect.

[Brief description of drawings]

FIG. 1 is an exploded perspective view of a reclining device according to the present invention.

FIG. 2 is an enlarged plan view showing a guide portion 11 of a lock member 13.

FIG. 3 is a cross-sectional view of the reclining device in which an electrode of a resistance welding machine is pressed to form a close contact portion 15 on one guide portion 11.

4 is a cross-sectional view taken along the line AA in FIG.

FIG. 5 is a guide portion 1 of a lock member 13 in a reclining device processed by a backlash preventing method according to a conventional technique.
It is an enlarged plan view showing 1.

[Explanation of symbols]

10 base plate 11 Guide section 12 guide groove 13 Lock member 14 lock teeth 15 Close part 20 tooth plates 21 recess 22 Tooth 100 reclining device

Claims (9)

[Claims] 1. A base plate fixed to the seat cushion side and a tooth plate fixed to the seat back side are rotatably supported by a shaft, and a concave portion is formed on one surface of the tooth plate. A tooth portion is provided on the inner peripheral surface of the concave portion, at least a pair of guide portions is provided on the base plate, a guide groove is formed between the pair of guide portions, and a lock member is provided in the guide groove. The tooth plate of the tooth plate is slidably arranged to move forward and backward, and the lock member is moved forward and backward by an operating member to operate engagement and disengagement of the tooth portion, and the tooth plate is coaxial with the base plate. In a reclining device for a vehicle seat that controls the rotation above, a pair of guides in a state in which the lock member is sandwiched Among them, by heating the base material forming at least one guide portion to soften it, by moving the base material toward the lock member by pressing the softened base material, to the guide portion, A reclining device for a vehicle seat, characterized in that a close portion is formed which is in close contact with the lock member. 2. A base plate fixed to the seat cushion side and a tooth plate fixed to the seat back side are rotatably supported by a shaft, and a concave portion is formed on one surface of the tooth plate. A tooth portion is provided on the inner peripheral surface of the concave portion, at least a pair of guide portions is provided on the base plate, a guide groove is formed between the pair of guide portions, and a lock member is provided in the guide groove. The tooth plate of the tooth plate is slidably arranged to move forward and backward, and the lock member is moved forward and backward by an operating member to operate engagement and disengagement of the tooth portion, and the tooth plate is coaxial with the base plate. In a reclining device for a vehicle seat that controls the rotation above, a pair of guides in a state in which the lock member is sandwiched Among them, the base material forming one guide portion is heated and softened, and the base material forming the other guide portion is pressed to move the base material toward the lock member, and the other A vehicle in which a lock member is moved toward the one guide portion together with a base material forming the guide portion, thereby forming a close contact portion that is in close contact with the lock member on the one guide portion. Seat reclining device. 3. The reclining device for a vehicle seat according to claim 1, wherein the close contact portion formed on the guide portion is in contact with the tooth portion of the tooth plate when the lock member is engaged with the guide member. A reclining device for a vehicle seat, wherein the parts come into close contact with each other over substantially the entire length thereof. 4. The reclining device for a vehicle seat according to claim 1, wherein the guide portion and the guide portion are adjacent to each other prior to heating the guide portion in which the close contact portion is formed. A reclining device for a vehicle seat, characterized in that the amount of heat conducted from the guide portion to the lock member is suppressed by applying grease to a portion where the lock member to be arranged is in contact with each other. . 5. A vehicle seat having a seat cushion, a seat back, and a reclining device, wherein the seat back can be tilted, wherein the reclining device is the reclining device according to any one of claims 1 to 4. A vehicle seat, which is a device. 6. A base plate fixed to the seat cushion side and a tooth plate fixed to the seat back side are rotatably supported by a shaft, and a concave portion is formed on one surface of the tooth plate. A tooth portion is provided on the inner peripheral surface of the concave portion, at least a pair of guide portions is provided on the base plate, a guide groove is formed between the pair of guide portions, and a lock member is provided in the guide groove. The tooth plate of the tooth plate is slidably arranged to move forward and backward, and the lock member is moved forward and backward by an operating member to operate engagement and disengagement of the tooth portion, and the tooth plate is coaxial with the base plate. In the backlash preventing method for a reclining device for a vehicle seat, which controls the above rotation, in the state where the lock member is clamped. Of the pair of guide portions, the base material forming at least one guide portion is heated to be softened, and the softened base material is pressed to move the base material toward the lock member. A backlash preventing method for a reclining device for a vehicle seat, characterized in that a close contact portion that is in close contact with the lock member is formed on the guide portion. 7. A base plate fixed to the seat cushion side and a tooth plate fixed to the seat back side are rotatably supported by a shaft, and a concave portion is formed on one surface of the tooth plate. A tooth portion is provided on the inner peripheral surface of the concave portion, at least a pair of guide portions is provided on the base plate, a guide groove is formed between the pair of guide portions, and a lock member is provided in the guide groove. The tooth plate of the tooth plate is slidably arranged to move forward and backward, and the lock member is moved forward and backward by an operating member to operate engagement and disengagement of the tooth portion, and the tooth plate is coaxial with the base plate. In the backlash preventing method for a reclining device for a vehicle seat, which controls the above rotation, in the state where the lock member is clamped. Of the pair of guide portions, the base material forming one guide portion is heated and softened, and the base material forming the other guide portion is pressed to move the base material toward the lock member. By moving the lock member together with the base material forming the other guide portion toward the one guide portion, a contact portion that is in close contact with the lock member may be formed on the one guide portion. A method for preventing play in a reclining device for a vehicle seat, which is characterized. 8. The backlash preventing method for a vehicle seat reclining device according to claim 6 or 7, wherein the close contact portion formed in the guide portion is in a state in which the lock member is engaged with the tooth portion of the tooth plate. A rattling prevention method for a reclining device for a vehicle seat, characterized in that the lock member and the guide portion are brought into close contact with each other over substantially the entire length thereof. 9. The method for preventing backlash of a reclining device for a vehicle seat according to claim 6, wherein the guide portion and the guide portion are heated prior to heating the guide portion in which the close contact portion is formed. Of the vehicle seat characterized in that the amount of heat conducted from the guide portion to the lock member is suppressed by applying grease to a portion where the lock member disposed adjacent to the lock member abuts each other. A method for preventing play in a reclining device.