JPH074141U - Automatic transmission shift lever device - Google Patents

Abstract

(57) [Summary] [Purpose] To improve the operation feeling of the shift lever and reduce the collision noise. [Configuration] Detent holes 2A on the left and right of the shift lever 7,
The plate bodies 8A and 8B having 2B are erected, and the shapes of the detent holes 2A and 2B of the plate bodies 8A and 8B are
When the grooved pin 1 is engaged with the upper surface of the detent hole, only one side is engaged, and when the grooved pin 1 is engaged with the side surface of the detent hole, both sides are engaged. As a result, by stopping the grooved pin 1 at both ends, the striking sound of the grooved pin 1 hitting the side surface of the detent hole and the rotation inhibition of the shift lever are simultaneously prevented to improve the operation feeling of the shift lever, and the grooved pin is detented on only one side. The hit sound was reduced by hitting the top surface of the hole.

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.

[0002]

[Prior art]

 The engagement structure between the detent hole and the grooved pin for preventing unexpected rotation of the automatic transmission has conventionally been the structure shown in FIGS. 5 and 6 (for example, Japanese Utility Model Publication No. 61-252). There, the plate body 13 with which the grooved pin 12 assembled to the shift lever body 11 engages is only on one side of the shift lever body 11. Therefore, even if the grooved pin 12 hits the side surface of the detent hole 15 when the shift lever main body 11 is rotated around the shaft 14, one side of the grooved pin 12 is released and is not restrained, so that the shift lever main body 11 is not rotated. The rotation stops after a slight amount of advance. As a result, the sound of the grooved pin 12 hitting the side surface of the detent hole 15 and the timing at which the rotation of the shift lever main body 11 is blocked are deviated, and the operation feeling of the shift lever feels uncomfortable.

In order to improve the above-mentioned operation feeling, the present applicant previously filed Japanese Patent Application No. 5-10496 (filing date: March 11, 1993), Japanese Patent Application No. 5-10498 ( Application date, March 11, 1993) was filed. There, as shown in FIGS. 7 and 8, plate bodies 23 and 24 having detent holes 22 of the same shape are provided on both sides of the grooved pin 21. As a result, when the shift lever 25 is rotated, both ends of the grooved pin 21 simultaneously come into contact with the side surfaces of the detent hole 22, and the timing of the contact and the timing at which the rotation is blocked coincide. The operation feeling of the shift lever is improved.

[0004]

[Problems to be solved by the device]

 However, it was found that the shift lever device of the above application still has the following problems. That is, as shown in FIG. 9, there are times when the grooved pin 21 hits the upper surface of the detent hole 22 (R, L positions). This is due to the biasing of the compression coil spring 26 incorporated at the lower end of the shift lever 25, which also causes a collision noise. This collision sound is louder than the conventional collision sound on the side surface of the hole shown in FIGS. 5 and 6, which is annoying. This is probably because the number of sound sources increased from one place on one side to two places on both sides. Further, the collision noise shown in FIGS. 7 to 9 is higher than that of the conventional ones shown in FIGS. It is considered that this is because the plate bodies 23 and 24 provided on both sides play a role of a kind of resonance box. As a result, this is contrary to the user's preference that low-pitched sound is generally important for producing a high-class feeling. SUMMARY OF THE INVENTION An object of the present invention is to provide a shift lever device for an automatic transmission, which has an improved operation feeling and a low collision noise.

[0005]

[Means for Solving the Problems]

 A shift lever device of an automatic transmission according to the present invention for achieving the above object comprises the following. That is, a plate body having detent holes on the left and right of the shift lever is provided, and the shape of the detent holes of the left and right plate bodies is such that when the grooved pin engages with the upper surface of the detent hole, only one side engages with the grooved pin. A shift lever device for an automatic transmission in which both sides are engaged when engaged with the side surface of the detent hole.

[0006]

[Action]

 In the above-mentioned device of the present invention, when the shift lever is prevented from rotating, the grooved pins are simultaneously applied to the side surfaces of the detent holes of the left and right plate bodies. The movement stops. As a result, the timing of hitting the sound and the prevention of the rotation of the shift lever coincide with each other, and the operation feeling is improved. Also, when the shift pin is rotated and the grooved pin collides with the upper surface of the detent hole (R, L position, etc.), the grooved pin collides with only the upper surface of the detent hole on one side, and the sound source becomes one place. As a result, the collision noise can be reduced and the sound can be reduced.

[0007]

【Example】

 An apparatus according to an embodiment of the present invention will be described with reference to FIGS. 3 and 4, the shift lever 7 of the automatic transmission for a vehicle is rotated in the vehicle front-rear direction about the shaft 9 and, as shown in FIGS. 1 and 2, P, R, N, D 2, , L. In order to prevent unexpected rotation of the shift lever 7 from a predetermined holding position, the grooved pin 1 that rotates together with the shift lever 7 is provided with a detent hole 2A formed in plate bodies 8A and 8B fixed to the vehicle body side. , 2B are engaged / disengaged with the respective detent grooves. As shown in FIG. 3, the shift lever 7 has a select button 3 attached to the knob portion. Inside the shift lever 7, a sleeve 4 and a sleeve 4 that are cam-engaged with the select button 3. The first detent rod 5 connected to the first detent rod 5 and the second detent rod 6 connected to the lower end of the first detent rod 5 are assembled so as to be slidable in the axial direction. The sleeve 4, the first detent rod 5, and the second detent rod 6 are constantly urged upward by a compression coil spring 10 provided below the second detent rod 6.

A grooved pin 1 extending in a direction perpendicular to the axial direction of the shift lever 7 is attached to the second detent rod 6. The grooved pin 1 extends through the elongated hole 7A formed in the shift lever 7 in the axial direction to the outside on both the left and right sides of the shift lever 7. Then, the grooved pin 1 is moved up and down together with the second detent rod 6.

Plate main bodies 8A and 8B, which are fixed members with respect to the vehicle body side, are provided upright on both left and right sides of the shift lever 7 (on both left and right sides in the vehicle traveling direction). Detent holes 2A and 2B are formed in the left and right plate bodies 8A and 8B at positions where the left and right ends of the grooved pin 1 extend, and the left and right ends of the grooved pin 1 are located in the detent holes 2A and 2B. It's rushing. The detent holes 2A and 2B have a detent groove pattern as shown in FIG. 1 in the case of 3A / T and FIG. 2 in the case of 4A / T, and the grooved pin 1 has P, R, N, D, 2, Hold at any position of L.

When the shift lever 7 is rotated to another position, the select button 3 is pressed to move the sleeve 4, the first detent rod 5, the second detent rod 6, the grooved pin 1 against the bias of the compression coil spring 10. Then, it is pushed down to disengage the grooved pin 1 from the detent groove, and the shift lever 7 is rotated around the shaft 9 in the vehicle longitudinal direction. Then, after turning to a desired position, the finger is released from the select button 3 to allow the return to the original position, and the sleeve 4, the first detent rod 5, the second detent rod 6, and the grooved pin 1 are attached to the coil spring 10. Push it up with force to put the grooved pin 1 in the desired detent groove position and engage with the detent hole.

As shown in FIGS. 1 and 2, the left and right detent holes 2A, 3A / T are at the R and L shift positions, and 4A / T are the R, 2 and L shift positions. The top surface shapes of the 2B detent grooves are changed from each other. That is, in the case of 3 A / T, at the shift positions of P, N, D and 2, the gap a between the grooved pin and the upper surface of the detent groove (the left side of the shift lever in the right-hand drive car, that is, the outer side), b ( In the case of a right-hand drive vehicle, the right side of the shift lever, that is, the inner side) is 0.5 to 1.2 mm, which is the same as the conventional one, but at the R and L shift positions, the left and right gaps a and b are changed from the conventional a = b = 0. In the present invention, a = 0 mm and b = 1 mm, and a ≠ b. Therefore, when the select button 3 is returned, the grooved pin 1 contacts the upper surface of the detent groove only on the outer side and does not contact the upper surface of the detent groove on the inner side. Further, the shape of the side surface of the detent groove that prevents the shift lever 7 from rotating may be the same as the conventional shape of the side surface of the detent groove when the grooved pin 1 is not coated with resin. Therefore, when the shift lever 7 is to be rotated in the vehicle front-rear direction, the grooved pin 1 simultaneously contacts the side surfaces of the detent grooves of the left and right detent holes. Further, in the case of 4A / T, at the P, N, and D shift positions, the clearance a between the grooved pin 1 and the upper surface of the detent groove (a left side of the shift lever in the right-hand drive vehicle, that is, the outside), b (a right-hand drive vehicle in the right side) That is, the inside is 0.5 to 1.2 mm, which is the same as the conventional one, but at the shift positions of R, L, and 2, a = 0 mm and b = 1 mm, and a ≠ b. Therefore, when the select button 3 is returned, the grooved pin 1 contacts the upper surface of the detent groove only on the outer side and does not contact the upper surface of the detent groove on the inner side.

The collision sound when hitting the upper surface of the detent groove is reduced only at the end of the grooved pin 1 at the R, L, (2 in case of 4A / T) shift position, which hits the upper surface of the detent groove. Therefore, the resin coating 1a may be applied. 1 and 2 show the case where such a resin coating 1a is applied. In the grooved pin 1 having the resin coating 1a on one end, a = 0 at the R and L positions in the case of 3A / T and R and L in the case of 4A / T is the outer surface of the resin coating 1a. And the gap between the upper surface of the detent groove and a, and set it to 0. In addition, in the grooved pin 1 having the resin coating 1a at one end, although not shown, the side surface of the detent groove has a shape in which the side of the detent groove on the side where the groove end of the coating side hits is more resinous than the side surface of the other detent groove. The coating 1a is retracted by the thickness of the coating 1a so that both ends of the grooved pin 1 simultaneously contact the left and right detent groove side surfaces.

Next, the operation will be described. First, the plate bodies 8A and 8B having the detent holes 2A and 2B are provided upright on the left and right of the shift lever 7, and the groove side faces of the left and right detent holes are constrained by the groove pin 1 on the left and right sides at the same time by the detent hole groove side faces. Therefore, when the shift lever 7 is rotated to a desired shift position, the grooved pin 1 is restrained at both ends, and the rotation is prevented as in the case of the conventional cantilever type grooved pin restraint. There is no delay, and rotation is instantaneously blocked. Therefore, the sound generated when the grooved pin 1 hits the side surface of the detent groove coincides with the rotation prevention of the shift lever 7, and the operation feeling is improved.

As for the positions where the grooved pin 1 abuts the upper surface of the detent groove, such as the R and L positions of 3A / T, the R, L and 2 positions of 4A / T, the upper surface of the detent groove on one side is detented on the other side. Since the groove pin 1 is made lower than the upper surface of the groove, the grooved pin 1 only hits the upper surface of the detent groove on the lower side, and the tapping sound is smaller and lower than in the conventional case. It is presumed that this is because the number of hit points is one instead of the conventional two. Further, when the surface of the grooved pin end portion corresponding to the lower side of the upper surface of the detent groove is provided with the resin coating 1a, the resin coating 1a buffers the hit, so that the tapping sound can be further reduced.

[0015]

[Effect of device]

 According to the present invention, the plate main body is erected on the left and right of the shift lever, and the shape of the detent hole of the plate main body is such that when the grooved pin is engaged with the upper surface of the detent hole, only one side is engaged and the grooved pin is engaged with the detent hole. Since both sides are engaged when engaging with the side surface, when the grooved pin engages with the side surface of the detent hole, the rotation of the shift lever is blocked at the same time, the operation feeling of the shift lever is improved, and the detent of the grooved pin is improved. The engagement with the upper surface of the hole is reduced from one side of the conventional case to one place on one side, and the tapping sound can be made small and low.

[Brief description of drawings]

FIG. 1 is a detent hole shape diagram of a shift lever device of an automatic transmission according to an embodiment of the present invention.

FIG. 2 is a detent hole shape diagram of a shift lever device of an automatic transmission according to an embodiment of the present invention.

FIG. 3 is an overall sectional view of a shift lever device.

FIG. 4 is a side view of a shift lever device.

FIG. 5 is a side view of a conventional shift lever device having a grooved pin having a cantilever type engagement structure.

6 is a cross-sectional view of the conventional device of FIG.

FIG. 7 is a cross-sectional view of a shift lever device including a grooved pin having a conventional both-end support beam type engagement structure.

8 is a partial side view of the device of FIG.

9 is a detent hole shape diagram of the device of FIG. 7. FIG.

[Explanation of symbols]

 1 Grooved pin 1a Resin coating 2A Detent hole 2B Detent hole 3 Select button 4 Sleeve 5 1st detent rod 6 2nd detent rod 7 Shift lever 7A Oval hole 8A Plate body 8B Plate body 9 Shaft 10 Compression coil spring

Claims (1)

[Scope of utility model registration request] 1. A plate body having detent holes on the left and right of a shift lever is provided, and the shape of the detent holes of the left and right plate bodies is such that only one side engages when the grooved pin engages with the upper surface of the detent hole. The shift lever device for an automatic transmission is characterized in that both sides are engaged when engaged with the side surface of the detent hole.