JPH0669514U - Automatic transmission shift lever device - Google Patents

Abstract

(57) [Abstract] [Purpose] To improve the accuracy of the positioning mechanism of the shift lever and to simplify the structure of the positioning mechanism. A holder 4 that holds a positioning lower portion 33 of the shift lever 31, a fulcrum portion 34 located at the lower end of the shift lever 31, and a positioning mechanism portion 45 that contacts the moderation groove 42.
1 and 1 are integrally formed of a material having a self-lubricating property.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a shift lever device for an automatic transmission for a vehicle, and more particularly to a shift lever device having a simplified structure for a shift lever positioning mechanism.

[0002]

[Prior art]

 5 to 7 show an example of a conventional shift lever device for an automatic transmission. In FIG. 5, reference numeral 1 denotes a plate body fixed to the body side of the automobile. A shift lever 2 is supported on the plate body 1. A cylindrical fulcrum portion 3 is attached to the lower end of the shift lever 2 by welding. The fulcrum portion 3 is arranged between the pair of plate bodies 1. A shaft 4 is held at the bottom of the plate body 1.

The shift lever 2 is swingably held by the plate body 1 via a shaft 4 inserted through a fulcrum portion 3. A resin bush 5 is provided between the inner peripheral surface of the fulcrum portion 3 and the outer peripheral surface of the shaft 4 in order to prevent rattling due to a gap and abnormal noise when the shift lever 2 swings. It is installed. A bracket 6 is attached to the shift lever 2 by welding. A connecting pin 7 to which a wire (not shown) connected to an automatic transmission (not shown) is connected to one side of the bracket 6.

On the other side of the bracket 6, there is arranged a positioning mechanism section 9 that comes into contact with the corrugated moderation groove 8 formed on the plate body 1 side. The positioning mechanism 9 is fixed to the other side of the bracket 6 via a machine screw 11. The positioning mechanism section 9 is composed of a movable section 9a, a pin 9b, a roller 9c, and a spring 9d. The movable portion 9a is movably held by the holder 10, and the pin 9d is attached to the movable portion 9a. The roller 9c is rotatably held by the pin 9d.

The movable portion 9a is biased by the spring 9d toward the moderation groove 8 side. As a result, the roller 9c held by the pin 9d is pressed against the moderation groove 8. When the shift lever 1 is swung in this state, the roller 9c rolls along the corrugated moderation groove 8, and the contact between the roller 9c and the concavo-convex surface of the moderation groove 8 causes the shift lever 1 to feel a moderation (positioning) during shifting. Feeling) is obtained.

As prior arts related to the conventional techniques shown in FIGS. 5 to 7, for example, Japanese Utility Model Publication No. 33703 and Japanese Utility Model Publication No. 59-33704 are known.

[0007]

[Problems to be solved by the device]

 However, when the shift lever, the fulcrum portion or the shift lever and the holder for holding the positioning mechanism portion that abuts against the moderation groove are formed of different members as in FIGS. Problem arises.

In the shift lever device of an automatic transmission, the shift lever 2, the fulcrum portion 3, and the holder 10 are usually made of iron members, and the members are joined by arc welding or the like. Therefore, when assembling each part, it is necessary to weld each part in a precisely positioned state, and the assembly becomes complicated. In addition, even if each part is accurately positioned, the dimensional accuracy may deteriorate due to thermal strain due to welding. In this case, work to remove the strain is required.

In addition, when the shift lever 2 is assembled to the plate body 1, a thin bush 5 is interposed between the shaft 4 and the fulcrum portion 3, but the dimensional accuracy of the shift lever 2 and the fulcrum portion 3 is increased. If the height is not high, the shaft 4 must be forcibly inserted into the fulcrum portion 3, and the bush 5 may be damaged.

In view of the above problems, the present invention aims to provide a shift lever device for an automatic transmission, which can improve the accuracy of a shift lever positioning mechanism and can simplify the positioning mechanism. And

[0011]

[Means for Solving the Problems]

 In order to achieve this object, a shift lever device for an automatic transmission according to the present invention is provided with a cylindrical fulcrum portion at the lower end of a shift lever, and the shift lever is provided with a plate body through a shaft inserted through the fulcrum portion. Shift lever device for an automatic transmission, which is provided with a holder for swingably holding the positioning portion in contact with a corrugated moderation groove formed on the plate main body near the lower end of the shift lever. In the above, the lower portion of the shift lever, the fulcrum portion, and the holder are integrally formed of a material having a self-lubricating property.

[0012]

[Action]

 In the shift lever device of the automatic transmission configured as above, the shift lever, the fulcrum portion provided at the end portion of the shift lever, and the holder provided near the end portion of the shift lever are self-lubricating. Since it is integrally formed of the material that it has, for example, resin, it is not necessary to assemble each component as in the conventional case, and the positioning mechanism can be simplified. In addition, since the integrally molded parts have self-lubricating properties, a bush is not particularly required and the mechanism can be simplified. Further, unlike welding, thermal strain does not occur, so that dimensional accuracy can be improved.

[0013]

【Example】

 A preferred embodiment of a shift lever device for an automatic transmission according to the present invention will be described below with reference to the drawings.

First Embodiment FIGS. 1 to 3 show a first embodiment of the present invention. In the figure, 21 indicates a plate body made of a thermoplastic resin. The plate body 21 is fixed to the body side of an automobile (not shown). A shift lever 31 for switching the gear ratio of an automatic transmission (not shown) is attached to the plate body 21.

The shift lever 31 has a shift lever body portion 32, a positioning lower portion 33, and a fulcrum portion 34. The positioning lower portion 33 and the fulcrum portion 34 are made of synthetic resin having self-lubricating property. The positioning lower portion 33 and the fulcrum portion 34 are mounted so as to be orthogonal to each other.

The positioning lower portion 33 and the fulcrum portion 34 are integrally formed by injection molding. The positioning lower part 33 is formed in a shaft shape, and the fulcrum part 34 is formed in a cylindrical shape. The shaft hole 34a of the fulcrum portion 34 extends in a direction orthogonal to the axial direction of the positioning lower portion 33. The plate bodies 21 described above are located on both sides of the fulcrum portion 34, respectively. A shaft 22 is arranged below the plate body 21.

Both ends of the shaft 22 are supported by each plate body 21. The fulcrum portion 34 of the shift lever 21 is supported by the shaft 22 inserted in the shaft hole 34a of the fulcrum portion 34. As a result, the positioning lower portion 33 of the shift lever 31 can swing with respect to the plate body 21.

A holding hole 33a extending in the axial direction is formed in the positioning lower portion 33. An elongated hole 33b penetrating the holding hole 33a is formed on the outer periphery of the positioning lower portion 33. A detint rod 35 is swingably inserted into the holding hole 33a. A retaining pin 36 is attached to the detinting rod 35, and the retaining pin 36 is inserted into the elongated hole 33b so that the retaining pin 36 can be engaged.

A compression coil spring 37 is housed in the lower portion of the holding hole 33a. The detail rod 35 is biased upward by a compression coil spring 37. The detent rod 35 is movable in the axial direction by the distance that the retaining pin 36 moves within the long hole 33b. A grouped pin 38 that can be engaged with the detinting hole 21 a formed in the plate body 21 is attached to the upper portion of the detinting rod 35.

A lever portion 39 is provided on one side of the positioning lower portion 33. The lever portion 39 is made of synthetic resin and is integrally molded with the positioning lower portion 33 by injection molding. A connecting pin 40 to which a wire connected to an automatic transmission (not shown) is connected is attached to one of the levers 39.

A holder 41 is attached to the other of the positioning lower portion 33. The holder 41 is made of synthetic resin and is integrally formed with the positioning lower portion 33 by injection molding. The holder 41 is composed of a bracket portion 41a and a holding portion 41b, and the holding portion 41b is integrated with the positioning lower portion 33 via the bracket portion 41a.

The holding portion 41b holds a positioning mechanism portion 45 that comes into contact with the corrugated moderation groove 42 formed on the plate body 21 side. The positioning mechanism portion 45 is composed of a movable portion 45a, a roller 45b, and a compression coil spring 45c. The movable portion 45a is slidably held by the holding portion 41b in the direction of the moderation groove 42.

The movable portion 45a is biased toward the moderation groove 42 by the compression coil spring 45c arranged on the bottom side of the holding portion 41b. A roller 45b is rotatably attached to the top of the movable portion 45a. The roller 45b is pressed against the moderation groove 42 by the urging force of the compression coil spring 45c, and is always in contact with the moderation groove 42.

The shift lever main body 32 is located above the positioning lower portion 33 of the shift lever 31. The shift lever body 32 is made of, for example, a metal pipe. The upper end of the positioning lower portion 33 and the lower end of the shift lever main body 32 are mechanically connected.

A rod 46 extending in the axial direction is provided in the shift lever body 32. On the top of the shift lever 31, an operation button 47 that can move in and out in the horizontal direction is provided. One end of the operation button 47 comes into contact with the inclined surface of the inclination knob 46a provided on the upper end of the rod 46. The lower end of the rod 46 is connected to the fixed rod 35 by screwing.

The detinting hole 21a formed in the plate body 21 has a plurality of engaging steps for positioning the shift lever at each position. The detinting rod 35 to which the grouped pin 38 is attached is biased upward by the compression coil spring 37, so that the grouped pin 38 is pressed against the stepped portion of the detinting hole 21a. There is.

When changing the shift position of the shift lever during driving of the vehicle, the operation button 47 provided on the head of the shift lever 31 is pressed, and this pressing force is applied via the rod 46 to the grouped pin. When the grouped pin 38 is transmitted to the grouped pin 38, the grouped pin 38 is moved downward to release the engagement between the grouped pin 38 and the detinting hole 21a. With the engagement between the grouped pin 38 and the detinting hole 21a being released, the shift lever 31 is shifted to a predetermined position by the driver of the vehicle. When the pressing of the operation push button 47 is released, the group pin 38 is pressed by the compression coil spring 37 to a predetermined position of the detinting hole 21a, and the grouping pin 38 and the detent hole 21a are engaged.

Next, the operation of the first embodiment will be described. When the shift position of the shift lever 31 is changed, the operation button 47 on the top of the shift lever 31 is pressed and the engagement between the detinting hole 21a and the grouped pin 38 is released. In this state, the shift lever 31 is shifted to a predetermined position by the driver. During the shift operation of the shift lever 31, the roller 45b of the positioning mechanism portion 45 rolls along the moderation groove 42, and the contact between the roller 45b and the concave convex surface of the moderation groove 42 causes a sense of moderation (positioning sense). ) Is obtained.

Here, since the positioning lower portion 33 of the shift lever 31, the fulcrum portion 34 and the holder 41 are integrally formed by injection molding, it is not necessary to join separate metal parts by arc welding as in the conventional case. No need to assemble these parts. Further, unlike welding, thermal strain does not occur, so that dimensional accuracy is significantly improved. Further, since the self-lubricating resin is used as the material, it is not necessary to attach a bush to the fulcrum portion 34.

As described above, since the dimensional accuracy between the positioning lower portion 33 of the shift lever 31, the fulcrum portion 34 and the holder 41 is improved, the assembling accuracy becomes high and the positional deviation at the time of assembling does not occur. Therefore, it becomes possible to assemble each component without difficulty, and the assembly is facilitated, and damage or damage at the time of assembly is prevented even with the resin member.

In this embodiment, the positioning lower portion 33, the fulcrum portion 34 and the holder 41 are integrally formed by injection molding, but a self-lubricating metal (for example, copper alloy) is formed by a mold. It is also possible to integrate each member by casting.

Second Embodiment FIG. 4 shows a second embodiment of the present invention. The second embodiment is different from the first embodiment only in the configuration of the holder and the positioning mechanism portion, and the other parts are the same as those in the first embodiment. Therefore, the corresponding parts are designated by the same reference numerals as those in the first embodiment. Therefore, the description of the corresponding parts will be omitted, and only different parts will be described.

In FIG. 4, reference numeral 51 indicates a holder. The holder 51 is composed of a bracket portion 51a and a holding portion 51b. The holder 51 holds a positioning mechanism 55. The positioning mechanism section 55 is composed of a movable arm 55a, a roller 55b, and a compression coil spring 55c.

One of the movable arms 55a is connected to the bracket portion 51a. A roller 55b is rotatably attached to the other side of the movable arm 55a. A compression coil spring 55c is housed in the holder 51b of the holder 51. The roller 55b is pressed against the corrugated moderation groove 42 formed in the plate body 21 by the compression coil spring 55c.

The holder 51 is integrally formed with the positioning lower portion 33 of the shift lever 31 by injection molding. As a result, the positioning mechanism for the shift lever 31 can be simplified as in the first embodiment, and the dimensional accuracy of each part can be improved and the assemblability can be improved. The other operation is similar to that of the first embodiment.

[0036]

[Effect of device]

 According to the present invention, the following effects can be obtained.

(1) Since the lower portion of the shift lever, the fulcrum portion of the shift lever, and the holder for holding the positioning mechanism portion that comes into contact with the moderation groove are integrally formed of a material having self-lubricating properties, Since it is not necessary to assemble each component as in the case of joining them by welding, the structure of the shift lever positioning mechanism can be simplified. As a result, the number of parts can be reduced, and the cost for assembly can be reduced.

(2) Since the lower portion of the shift lever, the fulcrum portion of the shift lever, and the holder are integrally formed, thermal distortion due to welding does not occur unlike in the conventional case, and dimensional accuracy between each component can be improved. it can. As a result, the integrally molded part can be easily assembled to the plate body side, the assemblability can be improved, and damage to parts due to excessive assembly load can be prevented.

(3) Since it is integrally formed of a self-lubricating material, it is not necessary to newly install a bush at the fulcrum portion through which the shaft is inserted, and the bush can be eliminated. Therefore, the assembly cost can be reduced accordingly.

[Brief description of drawings]

FIG. 1 is a front view of a main portion of a shift lever device for an automatic transmission according to a first embodiment of the present invention.

FIG. 2 is a sectional view taken along the line AA of FIG.

FIG. 3 is a sectional view showing the entire shift lever device of FIG.

FIG. 4 is a front view of a main portion of a shift lever device for an automatic transmission according to a second embodiment of the present invention.

FIG. 5 is a front view of a main part of a conventional shift lever device for an automatic transmission.

6 is a cross-sectional view taken along the line BB of FIG.

7 is an enlarged cross-sectional view taken along the line CC of FIG.

[Explanation of symbols]

 21 plate body 22 shaft 31 shift lever 33 positioning lower part 34 fulcrum part 41 holder 42 moderation groove 45 positioning mechanism part 51 holder 55 positioning mechanism part

Claims (1)

[Scope of utility model registration request] 1. A cylindrical fulcrum portion is provided at a lower end of the shift lever, and the shift lever is swingably held by a plate body via a shaft inserted in the fulcrum portion, and is provided near a lower end of the shift lever. A shift lever device for an automatic transmission provided with a holder that movably holds a positioning portion that comes into contact with a corrugated moderation groove formed on the plate body side, the lower portion of the shift lever, the fulcrum portion, and the holder. Is integrally formed of a material having self-lubricating property, a shift lever device for an automatic transmission.