JPH0668951U - Automatic transmission shift lever device - Google Patents

Abstract

(57) [Abstract] [Purpose] To simplify the structure of the shift lever support mechanism and improve the assembling property of the shift lever. [Structure] Shaft hole 34a of fulcrum 34 of shift lever 31
The shaft 22 to be inserted into the shaft 22 is formed of a member having self-lubricating property, the flange portion 25 that bulges in the radial direction is formed on one side of the shaft 22, and the shaft 2 is formed on the other side of the shaft 22.
2 is elastically deformed inward in the radial direction when inserted into the support hole 24 of the plate body 21 and the shaft hole 34a of the fulcrum portion 34, and is displaced outward in the radial direction when the shaft 22 comes out of the support hole 24. The retaining means 27 that engages with the side wall surface 21b is formed.

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 of a shift lever support mechanism.

[0002]

[Prior art]

 FIG. 7 shows an example of a conventional shift lever device for an automatic transmission. In FIG. 7, 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 into a shaft hole 3 a of the fulcrum portion 3. Between the inner peripheral surface of the shaft hole 3a 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 vibrates, The bush 5 is inserted. Both ends of the shaft 4 are supported by supporting holes 1 a formed in the plate body 1.

On one side of the shaft 4, a collar portion 4a for preventing the slip-off is formed. The other end of the shaft 4 is formed with a taper portion 1b for facilitating insertion into the support hole 1a and the shaft hole 3a. A pressing plate 6 for pressing the flange 4a side of the shaft 4 is attached to the plate body 1 with screws 7. The shaft 4 is prevented from moving in the axial direction by the collar portion 4a and the pressing plate 6.

In the shift lever device of FIG. 7, since the bush 5 made of resin having self-lubricating property is interposed between the inner peripheral surface of the shaft hole 3 a of the fulcrum portion 3 and the outer peripheral surface of the shaft 4. The movement of the shift lever 3 when the shift lever 3 swings becomes smooth, and the generation of abnormal noise during swinging is prevented.

[0006]

[Problems to be solved by the device]

 However, the shift lever device shown in FIG. 7 has the following problems.

(1) In the apparatus shown in FIG. 7, the holding plate 6 is necessary to prevent the shaft 4 from coming out of the plate body 1, and the number of parts is increased. Assembling work for attaching to 1 is essential. As a result, there is a problem that the assembly cost becomes high.

(2) In the apparatus shown in FIG. 7, the bush 5 is provided with a collar portion 5 a in order to avoid direct sliding contact between the support portion 3 and the plate body 1. Therefore, the bush 5 is divided into two, and the bushes 5 are set on both sides of the support portion 3, respectively. Therefore, when the support portion 3 of the shift lever 2 is arranged between the plate bodies 1, the bush 5 may fall off from the support portion 3 and there is a problem that the assembling property is poor. Further, if the bush 5 is not reliably set on the support portion 3, there is a problem that the bush 5 and other members interfere with each other during assembly, and the bush 5 is damaged.

In view of the above problems, the present invention provides a shift lever device for an automatic transmission, which simplifies the structure of the shift lever support mechanism and improves the assemblability of the shift lever. The purpose is to

[0010]

[Means for Solving the Problems]

 In order to achieve this object, a shift lever device of an automatic transmission according to the present invention is provided with a fulcrum portion having a shaft hole at a lower end of a shift lever, and both ends of a shaft to be inserted into the shaft hole of the fulcrum portion are plate-shaped. In a shift lever device of an automatic transmission, which is supported by a support hole of a main body and swingably holds the shift lever on a plate main body through the shaft, the shaft is made of a member having self-lubricating property, A flange portion that bulges outward in the radial direction is formed on one of the shafts, and a radial inward direction is formed on the other side of the shaft when the shaft is inserted into the support hole of the plate body and the shaft hole of the fulcrum portion. It is elastically deformed, and when the shaft comes out of the support hole, is displaced outward in the radial direction so as to engage with the side wall surface of the plate body.

[0011]

[Action]

 In the shift lever device of the automatic transmission configured as described above, since the shaft is made of a member having self-lubricating property, a resin bush unlike the conventional case is not required. Further, since the retaining means is formed on the shaft itself, retaining of the shaft from the plate body is prevented without using other members.

The retaining means is elastically deformed in the radial direction when it is inserted into the supporting hole of the plate main body of the shaft and the shaft hole of the fulcrum portion, and when it comes out of the supporting hole, it is elastically outward in the radial direction by a self-elastic force. Restore the original state. When the retaining means is displaced radially outward and restored, the retaining means engages with the side wall surface of the plate body.

In this state, the movement of the shaft in one direction in the axial direction is blocked by the flange portion, and the movement of the shaft in the other direction in the axial direction is blocked by the retaining means. Therefore, the shaft is prevented from moving in any of the axial directions, and the shaft is reliably prevented from falling off the plate body.

In this way, the shaft can be inserted into the support hole of the plate body and the shaft hole of the fulcrum portion, and the axial movement of the shaft can be automatically prevented when the insertion work is completed. Therefore, it is not necessary to use a separate member such as a retaining device as in the conventional device, and the assembling property of the shift lever can be significantly improved.

[0015]

【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.

1 to 6 show an embodiment of the present invention. In the figure, reference numeral 21 denotes 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 part 33 and the fulcrum part 34 are made of a metal member. The positioning lower portion 33 and the fulcrum portion 34 are attached so as to be orthogonal to each other. The positioning lower portion 33 and the fulcrum portion 34 are integrally molded. The positioning lower portion 33 is formed in a shaft shape, and the fulcrum portion 34 is formed in a cylindrical shape. The shaft hole 34 a of the fulcrum portion 34 extends in a direction orthogonal to the axial direction of the positioning lower portion 33. The above-mentioned plate bodies 21 are respectively located on both sides of the fulcrum portion 34. 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 integrally formed with the positioning lower portion 33. A connecting pin 40 to which a wire connected to an automatic transmission (not shown) is connected is attached to one side of the lever portion 39. A holder 41 is attached to the other side of the positioning lower portion 33. The holder 41 is integrally formed with the positioning lower portion 33. The holder 41 movably holds a positioning mechanism portion 45 that comes into contact with the corrugated moderation groove 42 formed on the plate body 21 side.

A 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 compression coil spring 37 presses the grouped pin 38 to a predetermined position of the detinted hole 21a, and the grouped pin 38 and the detinted hole 21a are engaged with each other. .

The shaft 22 that swingably supports the shift lever 31 is made of a synthetic resin having a self-lubricating property. Both ends of the shaft 22 are supported by support holes 24 formed in the plate body 21. A flange portion 25 is formed on one side of the shaft 22 so as to bulge outward in the radial direction. A hollow portion 26 extending in the axial direction is formed in the central portion of the shaft 22 in the radial direction.

A retaining means 27 is formed on the other side of the shaft 22. The tip 27a of the retaining means 27 is formed with a taper surface 27b which is tapered as it goes forward. The central portion of the retaining means 27 is formed as a thin portion 27c. At the end of the thin portion 27c, a step portion 27d is formed which is continuous with the tapered surface 27b.

The retaining means 27 is elastically deformed inward in the radial direction when it is inserted into the support hole 24 of the plate body 21 and the shaft hole 34 a of the fulcrum portion 34, and is self-elastic when the shaft 22 comes out of the support hole 24. It is designed to be restored radially outward by force. When the retaining means 27 is restored outward in the radial direction, the stepped portion 27d of the retaining means 27 engages with the side wall surface 21b of the plate body 21.

The shaft 22 is integrally molded by injection molding. As shown in FIG. 4, the shaft 22 does not have a circular cross-sectional shape, but has two flat surfaces 28. Each flat surface 28 is located on the swinging direction side of the shift lever 31. The shape of the support hole 24 of the plate body 21 matches the cross-sectional shape of the shaft 22, and when the shaft 22 is inserted into the support hole 24, the movement around the axis of the shaft 22 is prevented. It has become.

Next, the operation of this embodiment will be described. When assembling the shift lever 31 to the plate body 21, the fulcrum portion 34 of the shift lever 31 is positioned between the left and right plate bodies 21, and the shaft hole 34a of the fulcrum portion 34 and the support hole 24 of the plate body 21 are connected. Perform centering. When the centering of the shaft hole 34a and the support hole 24 is completed, the insertion of the shaft 22 is started from one plate body 21 side toward the support hole 24 and the shaft hole 34a.

The retaining means 27 located at the tip of the shaft 22 is first inserted into the support hole 24 of the one plate body 21. Here, since the outer periphery of the retaining means 27 of the shaft 22 is formed into the tapered surface 27b, as the shaft 22 is pushed into the support hole 24, the tip portion 27a of the retaining means 27 has a radius due to the wedge effect. Elastically deforms inward.

Further, when the shaft 22 is pushed in, as shown in FIG. 2, the retaining means 27 reaches the shaft hole 34a of the fulcrum portion 34 with the thin portion 27c elastically deformed. When the shaft 22 is continuously inserted in this state, the retaining means 27 reaches the supporting hole 24 of the other plate body 21, and the retaining means 27 comes out of the supporting hole 24 when the shaft 22 is completely inserted.

In the state where the retaining means 27 is removed from the support hole 24, the front end portion 27a of the retaining means 27 is displaced outward in the radial direction by the self-elastic force and is restored to the original state. When the retaining means 27 is restored to its original shape, as shown in FIG. 1, the step portion 27d of the retaining means 27 and the side wall surface 21b of the other plate body 21 are engaged with each other, and the shaft 22 Is prevented from moving in the A direction in the axial direction.

In the state where the shaft 22 is completely inserted into the support hole 24 and the shaft hole 34 a, the collar portion 25 formed on one side of the shaft 22 abuts the side wall surface 21 c of the one plate body 21, The movement of the shaft 22 in the B direction in the axial direction is prevented. As described above, when the insertion of the shaft 22 is completed, the movement of the shaft 22 in the A direction and the B direction is automatically prevented by the restoration of the retaining means 27, and the shaft 22 is surely removed from the plate body 21. To be prevented.

In the present embodiment, since the shaft 22 is an oil-containing type resin and has self-lubricating properties, a bush as in the prior art is not required, and the problem that the bush falls off during assembly is solved. Therefore, assembling performance of the shift lever 31 can be remarkably improved as compared with the conventional case.

Although the oil-impregnated resin is used as the member of the shaft 22 in the present embodiment, the member forming the shaft 22 is not limited to this, and may be a metal or the like having self-lubricating property. Also has the same effect.

[0038]

[Effect of device]

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

(1) A flange portion that expands in the radial direction is formed on one of the shafts inserted into the shaft holes of the fulcrum portions of the shift levers, and on the other side of the shaft, the support hole and the fulcrum of the shaft plate body. When the shaft is inserted into the shaft hole, it is elastically deformed inward in the radial direction, and when the shaft comes out of the support hole, it is displaced outward in the radial direction to form a retaining means that engages with the side wall surface of the plate body. Therefore, when the shaft insertion work is completed, the axial movement of the shaft can be automatically stopped.

Therefore, it is possible to reliably prevent the shaft from coming off the plate body without using another retaining member. As a result, the structure of the shift lever support mechanism is simplified, the number of parts to be assembled can be reduced compared to the conventional device, and the assemblability of the shift lever can be improved.

(2) Since the shaft is made of a self-lubricating member, even if the fulcrum of the shift lever is made of metal, the conventional bush is not required and the bush can be eliminated. Therefore, the problem that the bush falls off during assembly unlike the conventional device is eliminated. As described above, by eliminating the bush, assembling parts can be reduced and the assembling property of the shift lever can be improved in the same manner as described above.

[Brief description of drawings]

FIG. 1 is a cross-sectional view of essential parts showing a state when a shaft is completely inserted when a shift lever device of an automatic transmission according to an embodiment of the present invention is assembled.

FIG. 2 is a cross-sectional view of essential parts showing a shaft inserted state in the device of FIG.

3 is a cross-sectional view of a shaft in the device of FIG.

FIG. 4 is a cross-sectional view taken along the line CC of FIG.

5 is a side view of the device of FIG. 1. FIG.

6 is an overall cross-sectional view of the device of FIG.

FIG. 7 is a sectional view of a main part of a conventional shift lever device for an automatic transmission.

[Explanation of symbols]

 21 plate body 22 shaft 24 support hole 25 collar 27 retaining means 31 shift lever 34 fulcrum 34a shaft hole

Claims (1)

[Scope of utility model registration request] 1. A fulcrum portion having a shaft hole is provided at a lower end of the shift lever, and both ends of a shaft inserted into the shaft hole of the fulcrum portion are supported by supporting holes of a plate body, and the shift lever is interposed via the shaft. In a shift lever device for an automatic transmission that is swingably held by a plate body, the shaft is made of a member having self-lubricating property, and a flange portion that bulges outward in the radial direction is provided on one of the shafts. Formed,
On the other side of the shaft, when the shaft is inserted into the supporting hole of the plate body and the shaft hole of the fulcrum portion, the plate is elastically deformed inward in the radial direction and is displaced outward in the radial direction when the shaft comes out of the supporting hole. A shift lever device for an automatic transmission, characterized in that retaining means for engaging with a side wall surface of a main body is formed.