JP2011017172A - Door lock device for vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a door lock device for a vehicle, which can reduce the weight of a pole while surely performing the operation of making the pole fix the swing of a fork.SOLUTION: In this door lock device 1 for the vehicle, the pole 12 includes a metal pole body 100, and a resin portion 200 which is made of a resin and integrated with the pole body 100 by insert molding. The pole body 100 comprises a journaling portion 101 in which a through-hole 104 is formed, a passive portion 102 which is positioned on the one-end side of the journaling portion 101 and which abuts on a switching lever 13, and a fixing portion 103 which is positioned on the other end side of the journaling portion 101 and which fixes the swing of the fork 11 by abutting on the fork 11. In the journaling portion 101, a notch 105 with a width N smaller than an outside diameter M of a pole swing shaft 12s is formed in the range of not crossing a straight line L1 connecting the fixing portion 103 and an axial center 104x of the through-hole 104. In the resin portion 200, a shaft hole 201 for internally inserting the pole swing shaft 12s by filling the notch 105 is formed.

Description

  The present invention relates to a vehicle door lock device.

  Patent Document 1 discloses a conventional vehicle door lock device. This vehicle door lock device is provided on a door that opens and closes with respect to a vehicle body, and can swing on a mounting member formed with an entrance through which a striker on the vehicle body side enters, and a fork swing shaft provided on the mounting member And a fork that switches to a locked state in which the striker is locked in the entrance, or a release state in which the striker is unlocked in the entrance, and a pole swing provided on the mounting member A pole that is pivotally supported by the shaft and that can fix or release the swing of the fork, and a switching lever that presses the pole and switches the fork from the locked state to the released state.

  The pole (corresponding to “locking member 27” shown in FIG. 2 of Patent Document 1) is provided with a shaft support portion in which a shaft hole for inserting the pole swing shaft is formed, and on one end side of the shaft support portion. A passive portion that is positioned and abuts against the switching lever; and a fixing portion that is located on the other end side of the shaft support and abuts against the fork to fix the swing of the fork. Generally, the pole is made of metal.

  In the conventional vehicle door lock device having such a configuration, when the occupant operates the opening / closing handle or the like to open the vehicle door, the switching lever presses the pole to swing the pole. As a result, the pole releases the swing of the fork, and the fork switches from the locked state to the released state. On the other hand, when the passenger closes the vehicle door, the striker on the vehicle body side enters the entrance and presses the fork. As a result, the fork swings and switches to the locked state, and the pole fixes the swing of the fork.

JP-A-2005-351013

  By the way, for the conventional vehicle door lock device, in order to reduce the operating noise when the fork switches between the locked state and the released state, a part of the metal pole is replaced with resin, Lightening the pole has been done.

  However, if part of the pole is replaced with resin to reduce the weight of the pole, the pole will not be able to secure the strength to fix the swing of the fork, and the pole will lock the swing of the fork. There is a risk that it will be difficult to reliably perform the operation.

  The present invention has been made in view of the above-described conventional situation, and provides a vehicle door lock device that can reduce the weight of the pole while reliably performing the operation of fixing the swing of the fork. This is a problem to be solved.

A vehicle door lock device according to the present invention is provided on a door that opens and closes relative to a vehicle body, and an attachment member formed with an entrance through which the striker on the vehicle body side enters,
The striker is pivotally supported by a fork swing shaft provided in the mounting member, and is in a locked state in which the striker is locked in the entrance, or the striker is released in the entrance. A fork that switches to a released state, which is a state,
A pole that is pivotally supported by a pole swinging shaft provided on the mounting member, and that can fix or release swinging of the fork;
A vehicle door lock device comprising: a switching lever that presses the pawl and switches the fork from the locked state to the released state;
The pole is composed of a metal pole body and a resin resin part integrated with the pole body by insert molding,
The pole body includes a shaft support portion having a through-hole formed therein, a passive portion positioned on one end side of the shaft support portion, abutting against the switching lever, and positioned on the other end side of the shaft support portion and contacting the fork. A fixing portion that contacts and fixes the swing of the fork,
In the shaft support portion, a notch narrower than the outer diameter of the pole swing shaft is formed in a range not intersecting with a straight line connecting the fixed portion and the axis of the through hole,
The resin portion is formed with a shaft hole that fills the notch and inserts the pole swing shaft (Claim 1).

  In the vehicle door lock device of the present invention, the pole includes a metal pole main body and a resin resin portion integrated with the pole main body by insert molding. And the pole body is located on one end side of the shaft support portion in which the through hole is formed, the passive portion that contacts the switching lever, and the other end side of the shaft support portion. And a fixing portion for fixing the swing of the motor.

  A notch narrower than the outer diameter of the pole oscillating shaft is formed in the shaft support portion in a range not intersecting with the straight line connecting the fixed portion and the axis of the through hole. The resin portion forms a shaft hole that fills the notch and inserts the pole swing shaft.

  As described above, in the vehicle door lock device according to the present invention, a portion of the pole that requires strength is formed of metal, while a portion that does not need strength is replaced with resin. In particular, the range in which the notch is formed and the opening width of the notch are set so that the pole does not easily affect the operation of fixing the swing of the fork. It is possible to reduce the weight of the pole while ensuring the above.

  Therefore, the vehicle door lock device of the present invention can reduce the weight of the pole while reliably performing the operation of fixing the swing of the fork by the pole. As a result, the vehicle door lock device of the present invention can reduce the operation sound when the fork switches between the locked state and the released state, and the sound quality of the door closing sound is improved.

  In the vehicle door lock device of the present invention, the notch is formed in a range intersecting with a straight line connecting the axis of the pole swing shaft and the axis of the fork swing shaft in a state where the fixing portion is separated from the fork. (Claim 2).

  In this case, the vehicle door lock device can bring the shaft center of the pole swing shaft close to the shaft center of the fork swing shaft. For this reason, this vehicle door lock device can realize downsizing of the device, and as a result, mountability in a narrow space in the door is improved.

  In the vehicle door lock device of the present invention, it is preferable that the passive portion is integrally formed with a contact portion that contacts the switching lever by the resin portion.

  Since the pressing force of the switching lever against the passive part is relatively small, even if the abutment part is formed integrally with the passive part by the resin part, there is no problem with strength due to the resinization, but switching to the abutment part The contact sound with the lever can be reduced. For this reason, the vehicle door lock device of the present invention can reliably reduce the operating noise when the fork switches between the locked state and the released state.

It is a perspective view of the door lock device for vehicles of an example. It is a perspective view of the door lock device for vehicles of an example. It is a disassembled perspective view which shows the attachment member, a fork, a pole, a switching lever, etc. in connection with the door lock device for vehicles of an Example. It is a schematic diagram explaining the schematic operation | movement of a fork and a pole in connection with the vehicle door lock apparatus of an Example (it shows a latching state). It is a schematic diagram explaining the schematic operation | movement of a fork and a pole in connection with the vehicle door lock apparatus of an Example (a cancellation | release state is shown). FIG. 4 is a perspective view of a pole according to the vehicle door lock device of the embodiment (a perspective view taken along arrow VI in FIG. 3). 1 is a perspective view of a pole body according to a vehicle door lock device of an embodiment. The vehicle door lock device according to the embodiment shows a relative positional relationship between the straight line connecting the fixed portion and the shaft center of the through hole and the notch, and a magnitude relationship between the outer diameter of the pole swing shaft and the width of the notch. It is a schematic diagram. FIG. 4 is a schematic diagram showing a relative positional relationship between a notch and a straight line connecting a shaft center of a pole swing shaft and a shaft center of a fork swing shaft, according to the vehicle door lock device of the embodiment.

  DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments embodying the present invention will be described below with reference to the drawings.

(Example)
As shown in FIGS. 1 and 2, a vehicle door lock device 1 according to an embodiment (hereinafter simply referred to as “door lock device 1”) is applied to vehicles such as automobiles, buses, and industrial vehicles. is there. The door lock device 1 is disposed on the rear end side of a vehicle door (not shown) that opens and closes in a hinged manner in a posture corresponding to the front-rear direction, the up-down direction, and the inside-outside direction of the vehicle shown in FIGS. ing. That is, a key cylinder 9 is disposed on the rear outer surface of the vehicle door so as to expose the key insertion port 9a, and the door lock device 1 is disposed below the key cylinder 9 inside the vehicle door. It is installed. As will be described in detail later, an entrance 91 of the door lock device 1 is exposed at the rear end of the vehicle door. When the vehicle door is closed, a striker provided on the vehicle side (shown in FIGS. 4 and 5) enters the entrance 91. In addition, the front-back direction, the up-down direction, and the inner / outer direction shown in FIGS. 3 to 9 are all shown in correspondence with FIGS. In the present embodiment, the door lock device 1 provided on the left door is illustrated, but the right door is only symmetrical. Furthermore, the door lock device 1 may be provided on the front end side of a vehicle door (not shown) that opens and closes in a sliding manner.

  Hereinafter, the configuration of the door lock device 1 will be described in detail. As shown in FIGS. 1 to 3, the door lock device 1 is configured such that components such as a lock mechanism 10 are assembled to a main housing 30 disposed inside a rear end side of a vehicle door. The main housing 30 mounted on the vehicle door has a rod 71 (shown in FIG. 1) for transmitting the operation of a known outside door handle (not shown) provided outside the vehicle door, and the vehicle door. Is connected to a cable 72 for transmitting the operation of a well-known inner door handle (not shown) provided inside the door. A lock lever 20 (shown in FIG. 2) is swingably provided on the surface of the main housing 30 facing the vehicle inside. Coupled to the lock lever 20 are a rotor 50 and a link 60 (shown in FIG. 2) for transmitting the locking operation of the key cylinder 9 (the turning operation in the direction D3 shown in FIGS. 1 and 2).

  The lock mechanism 10 includes a state where the vehicle door is locked (hereinafter simply referred to as “locked state”) and a state where the vehicle door is unlocked (hereinafter simply referred to as “released state”). As shown in FIG. 3, the switching lever 13, a transmission mechanism (not shown) housed in the main housing 30, the attachment member 90, the fork 11, and the pole 12 are provided. I have.

  The transmission mechanism is a known mechanism that displaces the transmission portion 15 of the switching lever 13 by transmitting the operation of the rod 71 or the cable 72 to the switching lever 13 and is configured by general parts such as a gear and a lever. . For example, when the rider operates the outer door handle or the inner door handle to operate the rod 71 or the cable 72, those operations are transmitted to the switching lever 13 via the transmission mechanism in the main housing 30. Thereby, the switching lever 13 is displaced, and the transmission portion 15 of the switching lever 13 is raised from the state shown in FIG. 4 to the state shown in FIG. On the other hand, when the occupant returns the outer door handle or the inner door handle to the original state and the rod 71 or the cable 72 returns to the original state, the transmission unit 15 is lowered to the original position (position shown in FIG. 4). . When the passenger turns the key cylinder 9 in the direction D3, the lock lever 20 swings downward via the rotor 50 and the link 60. If it does so, a transmission mechanism will change the locus | trajectory in which the transmission part 15 of the switching lever 13 displaces with the operation | movement of the rod 71. FIG. Thereby, even if the transmission part 15 is displaced, it will not contact | abut to the contact part 202 mentioned later, and even if an outer side door handle is operated, it will be in the locked state which does not open a door.

  As shown in FIG. 3, the attachment member 90 is a press-worked steel plate, and the door lock device 1 is fixed to the vehicle door by being fastened to the rear end side of the vehicle door. The attachment member 90 is formed with an entrance 91 that is deeply cut out in a groove shape from the inside to the outside of the vehicle.

  As shown in FIG. 4, a substantially “I” shaped striker 99 relatively enters the entrance 91 when the door lock device 1 moves in accordance with opening and closing of the vehicle door. . The attachment member 90 is provided with a fork 11 and a pole 12 so as to sandwich the entrance 91 from above and below.

  The fork 11 is pivotally supported by a fork rocking shaft 11s disposed above the entrance 91. The fork 11 is biased by a coil spring 11t (shown in FIG. 3) so as to swing in the direction D2 around the fork swing shaft 11s.

  A portion of the fork 11 located on the entrance 91 side branches into an inner convex portion 11a and an outer convex portion 11b. And the striker 99 which entered into the entrance 91 is received in the recessed part 11c formed between the inner side convex part 11a and the outer side convex part 11b. In the state shown in FIG. 4, the fork 11 holds the striker 99 at the bottom of the entrance 91. A latch surface 11d that can abut on a stopper surface 12a, which will be described later, is formed on the tip side of the inner convex portion 11a that faces the pole 12.

  The pole 12 is pivotally supported by a pole swing shaft 12 s disposed below the entrance 91. The pole 12 is urged by a coil spring 12t (shown in FIG. 3) so as to swing in the direction D1 around the pole swinging shaft 12s, and normally maintains the posture shown in FIG. Yes.

  A stopper surface 12 a is formed at a portion located on the bottom side of the entrance 91 of the pole 12. The stopper surface 12a is a curved surface that curves in an arc shape around the pole swing shaft 12s, and is formed so as to face the above-described latch surface 11d. The arc constituting the stopper surface 12a is interrupted on the fork 11 side, and a sliding surface 12c extending from the arc to the pole swinging shaft 12s side is formed.

  The pole 12 has a contact portion 202 that protrudes from the pole swinging shaft 12s side toward the inside of the vehicle. As shown in FIG. 5, when the above-mentioned transmission part 15 rises and contacts the contact part 202, the pole 12 is pushed and displaced in the D1 direction.

  As shown in FIG. 4, when the fork 11 holds the striker 99 at the bottom of the entrance 91, the fork 11 swings in the D2 direction by the stopper surface 12a coming into contact with the latch surface 11d of the inner convex portion 11a. Fix it so that it does not. As a result, the lock mechanism 10 brings the vehicle door into a locked state.

  Then, when the occupant operates the outer door handle or the inner door handle and the rod 71 or the cable 72 is operated, the transmission unit 15 is raised by the transmission mechanism, and as shown in FIG. Touch. Then, the pole 12 swings in the direction D1 around the pole swing shaft 12s while resisting the biasing force of the coil spring 12t. At this time, since the stopper surface 12a is separated from the latch surface 11d, the pole 12 releases the swing of the fork 11. As a result, the fork 11 is swung in the direction D2 around the fork rocking shaft 11s by the biasing force of the coil spring 11t, and the striker 99 is displaced in a direction away from the entrance 91. As a result, the fork 11 is switched to a state in which the striker 99 is not held in the entrance 91. As a result, the lock mechanism 10 brings the vehicle door into a released state.

  In the state shown in FIG. 4, if the user further opens the vehicle door, the striker 99 is displaced further away from the entrance 91, so that the fork 11 also follows and further swings in the D2 direction. Therefore, the user's opening operation is not hindered.

  On the contrary, when the striker 99 enters the entrance 91 by the passenger trying to close the vehicle door, the fork 11 also follows and swings in the direction opposite to the D2 direction. 4 returns to the state shown in FIG. At this time, the tips of the outer convex portion 11b and the inner convex portion 11a slide while sequentially contacting the sliding surface 12c. When the inner convex portion 11a is separated from the sliding surface 12c, the pole 12 swings in the direction opposite to the direction D1, and returns to the original state shown in FIG. 4, so that the stopper surface 12a is the latch surface 11d. The swing of the fork 11 is fixed. As a result, the lock mechanism 10 brings the vehicle door into a locked state.

  In the door lock device 1 of the embodiment that operates in this way, the weight of the pole 12 is reduced by the following configuration.

  6 is composed of a metal pole body 100 shown in FIG. 7 and a resin portion 200 made of resin shown in FIG. As a material of the resin portion 200, for example, a thermoplastic resin such as a nylon resin is used from the viewpoint of moldability, strength, durability, and the like.

  As shown in FIGS. 7 and 8, the pole body 100 is formed by stamping a thick steel plate, and is swelled from a central shaft support portion 101 in which a through hole 104 is formed and from one end side of the shaft support portion 101. A narrow passive portion 102 extending in a direction away from the axial center 104x of the through hole 104 and a bulge from the other end side of the axial support portion 101, away from the axial center 104x of the through hole 104, and opposite to the passive portion 102 And a wide fixed portion 103 extending in the direction.

  As shown in FIG. 8, the inner diameter of the through hole 104 is increased to some extent (for example, 1 to several mm) with respect to the outer diameter M of the pole swing shaft 12 s. Further, the through hole 104 is formed with a notch 105, and the inner peripheral surface of the through hole 104 has a “C” shape. The width N at which the notch 105 opens is narrower than the outer diameter M of the pole swing shaft 12s. Thereby, the inner peripheral surface of the through hole 104 surrounds the periphery of the pole swing shaft 12s in a range exceeding 180 °.

  As shown in FIGS. 6 and 8, the resin portion 200 is integrated with the pole body 100 by insert molding so as to wrap the pole body 100. A portion of the resin portion 200 that covers the shaft support portion 101 fills the notch 105 along the inner peripheral surface of the through hole 104, and further bulges in a cylindrical shape in the thickness direction of the pole body 100, so that the pole swing shaft A shaft hole 201 for inserting 12s is formed. The shaft center of the shaft hole 201 is coaxial with the shaft center 104 x of the through hole 104. Further, the inner diameter of the shaft hole 201 is slightly increased with respect to the outer diameter M of the pole swing shaft 12s so as not to cause rattling. A portion of the resin portion 200 that covers the entire passive portion 102 bulges in a columnar shape in the thickness direction of the pole body 100 to form the abutting portion 202 described above. The portion of the resin portion 200 that covers the fixing portion 103 is exposed from the tip side of the fixing portion 103, and the exposed end surface of the fixing portion 103 is the stopper surface 12a described above.

  As shown in FIG. 8, the notch 105 opens in a range that does not intersect the straight line L <b> 1 connecting the fixed portion 103 and the axial center 104 x of the through hole 104 in the shaft support portion 101. In other words, the notch 105 reduces the compressive load when a compressive load is applied to the fixed portion 103 and the shaft support portion 101 via the latch surface 11d and the stopper surface 12a in a state where the pole 12 fixes the swing of the fork 11. It is formed in a range not burdened.

  Further, as shown in FIG. 9, the notch 105 is formed with the shaft center 12 x of the pole swing shaft 12 s in a state where the pole 12 releases the swing of the fork 11, that is, in a state where the fixed portion 103 is separated from the fork 11. It is formed in a range intersecting with a straight line L2 connecting the axis 11x of the fork swing shaft 11s. That is, the part of the pole body 100 facing the fork 11 is cut away so as to be away from the fork 11, and the resin part 200 including the pole body 100 is also shaped to be away from the fork 11. For this reason, in a state where the fixing portion 103 is separated from the fork 11, the pole 12 is positioned with respect to the fork 11 while the pole 12 is positioned outside the arcuate locus K drawn by the tips of the inner convex portion 11a and the outer convex portion 11b. Making it easier to approach.

<Effect>
In the door lock device 1 of the embodiment having the above-described configuration, the pole 12 includes a metal pole main body 100 and a resin resin portion 200 integrated with the pole main body 100 by insert molding. The pole body 100 is located on the shaft support portion 101 in which the through hole 104 is formed, the passive portion 102 that is in contact with the switching lever 12 and the other end side of the shaft support portion 101. And a fixing portion 103 that contacts the fork 11 and fixes the swing of the fork 11.

  As shown in FIG. 8, the shaft support portion 101 has a fixed portion that does not intersect the straight line L1 connecting the fixed portion 103 and the shaft center 104x of the through hole 104, that is, via the latch surface 11d and the stopper surface 12a. A notch 105 is formed in a range not bearing a compressive load acting on the shaft 103 and the shaft support 101. The resin portion 200 forms a shaft hole 201 that fills the notch 105 and inserts the pole swing shaft 12s. The width N at which the notch 105 is opened is narrower than the outer diameter M of the pole swing shaft 12s, and the C-shaped inner peripheral surface of the through hole 104 exceeds 180 ° around the pole swing shaft 12s. And the shaft hole 201 is reinforced.

  As described above, in the door lock device 1, the pole 12 is configured such that a portion requiring strength is made of metal, while a portion not requiring strength is replaced with resin, so that the pole 12 swings the fork 11. The pole 12 can be reduced in weight while easily securing strength for fixing.

  Therefore, the door lock device 1 of the embodiment can reduce the weight of the pole 12 while reliably performing the operation of the pole 12 fixing the swing of the fork 11. As a result, the door lock device 1 can reduce the operation sound when the fork 11 is switched between the locked state and the released state, and the sound quality of the door closing sound is improved.

  Further, as shown in FIG. 9, the notch 105 has a straight line L2 connecting the axis 12x of the pole swing shaft 12s and the axis 11x of the fork swing shaft 11s in a state where the fixing portion 103 is separated from the fork 11. It is formed in the crossing range. For this reason, even if the shaft center 12x of the pole swing shaft 12s and the shaft center 11x of the fork swing shaft 11s are brought close to each other, it is difficult for the pole 12 to interfere with the swing of the fork 11. For this reason, the door lock apparatus 1 can implement | achieve size reduction of an apparatus, As a result, the mounting property to the narrow space in a door improves.

  Further, since the pressing force of the transmission portion 15 of the switching lever 13 against the passive portion 102 is relatively small, even if the contact portion 202 is formed integrally with the passive portion 102 by the resin portion 200, the strength due to resinization is increased. While it is difficult for problems to occur, the contact sound between the contact portion 202 and the transmission portion 15 of the switching lever 13 can be reduced. For this reason, the door lock device 11 can reliably reduce the operation sound when the fork 11 is switched between the locked state and the released state.

  While the present invention has been described with reference to the embodiments, it is needless to say that the present invention is not limited to the above-described embodiments and can be appropriately modified and applied without departing from the spirit thereof.

  The present invention is applicable to a vehicle door lock device.

DESCRIPTION OF SYMBOLS 99 ... Strike 91 ... Entrance 90 ... Mounting member 11s ... Fork rocking shaft 11 ... Fork 12s ... Pole rocking shaft 12 ... Pole 13 ... Switching lever 1 ... Door lock device for vehicles 100 ... Pole main body 200 ... Resin part 104 ... Through hole 101 ... Shaft supporting part 102 ... Passive part 103 ... Fixed part 104x ... Axle center of the through hole L1 ... Straight line connecting the fixed part and the axis of the through hole M ... Outer diameter of the pole swing shaft N ... Width of the notch 105 ... notch 201 ... shaft hole 12x ... axis of pole swing shaft 11x ... axis center of fork swing shaft L2 ... straight line connecting axis of pole swing shaft and shaft center of fork swing shaft 202 ... contact portion

Claims (3)

A mounting member provided at a door that opens and closes relative to the vehicle body, and an entrance through which the striker on the vehicle body side is formed;
The striker is pivotally supported by a fork swing shaft provided in the mounting member, and is in a locked state in which the striker is locked in the entrance, or the striker is released in the entrance. A fork that switches to a released state, which is a state,
A pole that is pivotally supported by a pole swinging shaft provided on the mounting member, and that can fix or release swinging of the fork;
A vehicle door lock device comprising: a switching lever that presses the pawl and switches the fork from the locked state to the released state;
The pole is composed of a metal pole body and a resin resin part integrated with the pole body by insert molding,
The pole body includes a shaft support portion having a through-hole formed therein, a passive portion positioned on one end side of the shaft support portion, abutting against the switching lever, and positioned on the other end side of the shaft support portion and contacting the fork. A fixing portion that contacts and fixes the swing of the fork,
In the shaft support portion, a notch narrower than the outer diameter of the pole swing shaft is formed in a range not intersecting with a straight line connecting the fixed portion and the axis of the through hole,
The vehicle door lock device according to claim 1, wherein the resin portion is formed with a shaft hole that fills the notch and inserts the pole swing shaft.   2. The notch is formed in a range intersecting with a straight line connecting an axis of the pole swing shaft and an axis of the fork swing shaft in a state where the fixed portion is separated from the fork. Vehicle door lock device.   The vehicle door lock device according to claim 1 or 2, wherein a contact portion that contacts the switching lever is integrally formed with the passive portion by the resin portion.

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