JP4750503B2 - Selector device for transmission - Google Patents

Description

  The present invention relates to a select lever device for a transmission, and to an improvement of the shift lock device.

  The transmission is used, for example, in an automobile to change the driving force of an engine and transmit it to wheels, and one of them is an automatic transmission (AT). In AT, the select lever can be moved from the P shift range to another shift range to move forward and backward, and the shift operation is simple. On the other hand, since the car starts only by the shift operation of the select lever, the shift operation may be wrong. In view of this, various shift lock devices have been developed that prohibit the shift operation of the select lever when a predetermined condition is not satisfied. As one type, when the select lever is in the P shift range, the shift is locked by a shift lock member, and when the brake pedal is depressed, the select lever is unlocked by the shift lock member.

  As a conventional shift lock device of the above-mentioned type, there is known a device showing an enlarged cross-sectional view of its main part in FIG. This device is fixed to a bracket or a main body portion of a select lever device, and is supported so as to be swingable about a swing shaft center 100 indicated by a broken line on a bracket 102 having a shaft portion 101 and the shaft portion 101 of the bracket 102. The shift lock link 103 and drive means 104 that rotationally drives the shift lock link 103 to a shift prohibited position (lock position) and a shift allowable position (non-lock position) of a select lever (not shown). The driving means 104 is composed of a solenoid, and only the plunger tip of the solenoid is shown in FIG.

  In this conventional shift lock device, when the brake is depressed when the shift lock link 103 is in the locked position, the drive means 104 is energized, the solenoid's movable shaft is magnetically attracted, and the drive shaft moves in the axial direction. . As a result, the shift lock link 103 swings about the swing axis 100 to the unlocked position, and the select lever is allowed to shift.

  When the shift lock link 103 is rotated by the driving means 104, rattling noise is generated between the shift lock link 103 and the bracket 102. Conventionally, in order to suppress actual rattling noise, a grease 105 is interposed between the outer peripheral surface of the shaft portion 101 of the bracket 102 and the inner peripheral surface of the sleeve of the shift lock link 103 fitted thereto, A rubber stopper 106 is provided at a predetermined position of the shift lock link 103 to suppress the occurrence of rattling noise.

  When applying the grease 105 between the bracket 102 and the shift lock link 103 of the prior art, the grease is easily affected by a temperature change, and has problems such as deterioration. If it deteriorates, it will be necessary to apply grease again. This takes time and money. Further, when the rubber stopper 106 is used, a problem of rubber deterioration, a space for attaching the rubber stopper 106, and the like are required. For this reason, there is a problem that it is difficult to make the shift lock device compact or the cost increases.

  The present invention has been made in view of the above problems, and it is possible to select a transmission that can be used stably for a long period of time with little problem of deterioration and / or does not hinder downsizing and hardly generates noise such as rattling noise. An object is to provide a lever device.

Means and effects for solving the problems

A select lever device of a transmission according to the present invention includes a select lever that is shifted to each shift range, a shift lock link that prevents movement of one of the select levers from another shift range, and the shift lock. A selector lever device for a transmission, comprising: a support member that rotatably supports a link; and a shift lock link driving unit that drives the shift lock link and allows the select lever to move by the shift lock link. The shift lock link and the support member are always urged in the direction of the rotation axis of the shift lock link so that the shift lock link and the support member or the shift lock link and the shift lock link driving means are always connected. Chi lifting the biasing means is brought into contact, have the one shaft portion of the shift lock link and said support member The other of the shift lock link and the support member has a sleeve that is cylindrically fitted to the shaft portion, the shaft portion and the sleeve rotatably support the shift lock link, and the biasing means is It is located between the shaft portion and the sleeve, the shaft portion is a hollow shaft, and the urging means is located in a hollow portion of the hollow shaft .

The shift lock link that is rotatably supported by the support member is urged in the direction of the rotation axis by the urging means and is always in contact with the support member or the shift lock link driving means . Therefore, the axial gap between the shift lock link and the support member or the shift lock link driving means is removed, and the occurrence of rattling noise can be suppressed or prevented.

  One of the shift lock link and the support member of the select lever device of the transmission according to the present invention can be a shaft portion, and the other can be a sleeve fitted to the shaft portion. The shift lock link is rotatably supported on the support member by the shaft portion and the sleeve, and the biasing means can be positioned between the shaft portion and the sleeve. The shaft portion and the sleeve are at a position closest to the rotation center, and the biasing means is also positioned at a position close to the rotation center. Even when the shaft portion and the sleeve swing with respect to each other, since the position of the biasing means is close to the center of rotation, the displacement based on the swinging acting on the biasing means is small, and the biasing means is caused by the swinging. The biasing force of the biasing means does not fluctuate greatly.

And the shaft portion one has a shift lock link and the support member and the hollow shaft, Ru provided a biasing means in the hollow portion of the hollow shaft. Since the inner peripheral surface of the sleeve is fitted to the outer peripheral surface of the shaft portion, the function as the shaft is not damaged at all even if the shaft portion is a hollow shaft. Materials of the hollow and Do Tsu portion in order to be hollow portion is lighter it becomes unnecessary reversed. And when providing an urging means in this hollow part, the other space for providing an urging means becomes unnecessary. For this reason, the select lever device of this space transmission can be made compact.

  The biasing means can be a spring. The spring is preferably a coil spring. The spring may be a compression spring. Depending on the application, it can also be used as a tension spring.

  Examples of the member that is always in contact with the shift lock link being biased by the biasing means include a support member that supports the shift lock link. In addition to the support member, a shift lock link driving means for driving the shift lock link can be a member that always abuts. In this case, the shift lock link is pressed against the shift lock link driving member by the biasing means interposed between the support member and the shift lock link, and the shift lock link always comes into contact with the shift lock link driving member. As a result, the relative position of the shift lock link with respect to the support member and the shift lock link driving means is defined, and noise such as rattling noise generated when the shift lock link separates from or comes into contact with the support member and the shift lock link drive means. Can be suppressed.

  The support member and the shift lock driving means are fixed to the bracket or the main body portion of the select lever device of this transmission, and the support member and the shift lock driving means do not rattle or generate a hitting sound.

  Embodiments of a select lever device for a transmission according to the present invention will be described below. FIG. 1 is an overall view in which a part of the select lever device of the transmission of this embodiment is omitted, FIG. 2 is an enlarged view of the main part, FIG. 3 is a cross-sectional view taken along line AA shown in FIG. An arrow view seen from the X direction shown in FIG. 3 is shown in FIG.

  As shown in FIG. 1, a select lever device 1 of the transmission is fixed to a bracket or a main body portion of the device and constitutes a support member of the present invention, and the bracket 2 is swingably held. The shift lock link 3, the compression spring 4 constituting the urging means of the present invention, and the shift lock link 3 are rotationally driven to a shift prohibited position (lock position) and a shift allowable position (non-lock position). A solenoid 5 constituting a shift lock link driving means and a select lever 6 are provided.

  As shown in FIG. 3, the bracket 2 is made of resin, and includes a substrate portion 21 and a cylindrical shaft portion 23 that defines a shaft hole 22 by a tip opening formed so as to protrude from one surface of the substrate portion 21. The outer peripheral surface of the shaft portion 23 includes a root portion 231 having a large outer diameter extending from the substrate portion 21 and a tip portion 232 having a small outer diameter and being coaxial with the root portion 231.

  The shift lock link 3 is made of resin, and as shown in FIG. 3, the lock main body 31 and the cylindrical sleeve 32 closed at the other end by one end opening provided at the substantially central portion of the lock main body 31 and the lock. One end of the main body 31 has a coupling pin 33 parallel to the axis of the sleeve 32. The inner peripheral surface of the sleeve 32 includes a closed bottomed portion 321 having a small inner peripheral diameter on the other end side and an open portion 322 having a large inner peripheral diameter coaxial with the bottomed portion 321 on the opening side. A two-stage sleeve hole 320 is formed at the opening.

  The shift lock link 3 is rotatably supported by the bracket 2 by inserting the shaft portion 23 of the bracket 2 into the sleeve hole 320 of the sleeve 32. The outer peripheral surface of the tip portion 232 of the shaft portion 23 of the bracket 2 is fitted to the inner peripheral surface of the bottomed portion 321 of the sleeve 32, and the outer peripheral surface of the base portion 231 of the shaft portion 23 is fitted to the inner peripheral surface of the opening portion 322. Will fit.

  The compression spring 4 is mounted in the shaft hole 22 of the shaft portion 23 of the bracket 2. One end of the compression spring 4 is pressed by the bottom of the shaft hole and the other end is pressed by the bottom of the sleeve hole 320, and the shaft hole 22 and the sleeve are compressed. It is held in the hole 320. The bracket 2 and the shift lock link 3 are biased by the compression spring 4 in a direction away from each other in the axial direction of the shaft portion 23.

  As shown in FIG. 2, the solenoid 5 includes a columnar solenoid body 51 fixedly held by the bracket 2 and a plunger 52 that is coaxial with the solenoid body 51 and reciprocates in the axial direction. As shown in FIG. 4, the distal end side of the plunger 52 is a solenoid distal end portion 521 having a hole of a predetermined size. The plunger 52 of the solenoid 5 is normally in the protruding position, and moves to the solenoid body 51 side when energized. The coupling pin 33 of the shift lock link 3 is inserted into the solenoid tip 521. FIG. 2 illustrates a state in which the shift lock link 3 is in the shift prohibited position. In this state, the solenoid 5 is not energized and the plunger 52 is in a protruding state. The plunger 52 that is activated when the solenoid 5 is energized moves to the solenoid body 51 side, and the shift lock link 3 rotates about the rotation axis 325 shown in FIG. Shift to the right end. This position is a shift allowable position.

  The select lever 6 is an operation lever for selecting a shift range to be changed from one shift range (range) to another shift range. The select lever 6 is provided with a select button 61 shown in FIG. When the select lever 6 is selecting the parking (P) shift range, the shift lock link 3 is in the locked position and the shift operation is not possible. By operating a brake pedal (not shown) to activate the solenoid 5 and pulling in the plunger 52, the shift lock link 3 is brought into the unlocked position. It can be shifted to the range.

  The select lever device of the transmission of this embodiment has the above-described configuration. The select lever device of this transmission includes a bracket 2, a shift lock link 3, and a compression spring 4 that are compressed by being pressed by the bottom of the shaft hole 22 of the bracket 2 and the bottom of the sleeve hole 320 of the shift lock link 3. Are urged in a direction away from each other in the axial direction of the shaft portion 23. The shift lock link 3 is engaged with the plunger 52 of the solenoid 5 fixedly held by the bracket 2 and pressed against the solenoid 5. That is, the shift lock link 3 is always pressed against the solenoid 5 by the compression spring 4. For this reason, the movement of the shift lock link 3 is restricted, and the shift lock link 3 does not rattle and generate a hitting sound. The shift lock link 3 is swung by a solenoid 5. However, since the compression spring 4 is provided at a position coaxial with the swing axis, the influence of the swing of the shift lock link 3 is not great. For this reason, even if the shift lock link 3 swings, the rattling suppression function of the shift lock link 3 by the compression spring 4 does not change.

  Further, in the select lever device of the transmission of this embodiment, the compression spring 4 is disposed in the shaft hole 22 of the shaft portion 23 of the bracket 2. For this reason, the space required by introducing the compression spring 4 becomes unnecessary. Since this space becomes unnecessary, the select lever device of the transmission becomes compact.

  In the select lever device of the transmission of this embodiment, the shift lock link 3 is pressed against the solenoid 5 by the compression spring 4 to prevent the shift lock link 3 from rattling, but a tension spring is used instead of the compression spring 4. Then, the bracket 2 and the shift lock link 3 can be attracted to each other and brought into contact with each other. Also in this case, since the shift lock link 3 is always in contact with the bracket, the rattling of the shift lock link 3 is suppressed.

It is the whole figure which omitted a part of select lever device of the transmission of an example. It is an enlarged view of the principal part of FIG. It is AA sectional drawing of FIG. It is the arrow line view seen from the X direction shown in FIG. It is sectional drawing equivalent to FIG. 3 of a prior art example.

Explanation of symbols

1: Select lever device 2: Bracket 21: Board part 22: Shaft hole 23: Shaft part 3: Shift lock link 31: Lock body part 32: Sleeve 33: Connecting pin 320: Sleeve hole 4: Compression spring 5: Solenoid 51: Solenoid body 52: Plunger 6: Select lever 61: Select button

Claims (3)

A select lever that is shifted to each shift range;
A shift lock link that prevents movement from one shift range of the select lever to another shift range;
A support member for rotatably supporting the shift lock link;
A shift lever link driving means for driving the shift lock link and allowing the shift lever link to move the select lever;
Between the shift lock link and the support member, the shift lock link and the support member or the shift lock link and the shift lock link driving means are always applied by urging in the rotational axis direction of the shift lock link. Chi lifting biasing means for contact,
One of the shift lock link and the support member has a shaft portion, and the other of the shift lock link and the support member has a sleeve that is cylindrically fitted to the shaft portion, and the shaft portion and the sleeve are The shift lock link is pivotably supported,
The biasing means is located between the shaft and the sleeve;
The selector lever device for a transmission, wherein the shaft portion is a hollow shaft, and the urging means is located in a hollow portion of the hollow shaft . The select lever device for a transmission according to claim 1, wherein the biasing means is a compression spring. 3. The select lever device for a transmission according to claim 1, wherein the shift lock link driving unit is a unit that drives a portion of the shift lock link spaced apart from a rotation center in a rotation direction. 4.

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