JP3549617B2 - Mechanical shift lock device - Google Patents

Description

[0001]
[Industrial applications]
The present invention relates to a mechanical shift lock device used for restricting a shift operation of a shift lever of an automatic transmission such as an automobile.
[0002]
[Prior art]
The mechanical shift lock device has a lock mechanism for mechanically locking the shift lever at the parking range position. There are various lock mechanisms, for example, a lock pin is urged by a spring, and the urged lock pin is engaged with a notch of a lock cam provided at a shift lever base. This engagement is automatically performed at the parking range position by a spring.
[0003]
There are various methods for releasing the lock in the lock mechanism. For example, pulling the cable by depressing the brake pedal, moving the lock cam to move the lock pin to the unlock position (brake interlocking type), or inserting the key into the key cylinder and turning it from the LOCK position to the ACC position There are ones that pull the cable and move the lock cam to move the lock pin to the unlock position (key-linked).
[0004]
Further, there is a brake-locking type and a key-linking type that combine the functions of both (brake-key linkage type).
[0005]
For example, there is a mechanical shift lock device in which a brake key is interlocked with a middle slide member fixed by caulking to an end of a cable connected to a lock cam. The slide member is slidably supported in the longitudinal direction in the housing, and a cutout is formed at an intermediate portion in the longitudinal direction. Further, a lock member that slides in a direction orthogonal to the slide direction of the slide member by a key operation is provided in the housing, and when the lock member is inserted into the notch, the movement of the slide member is restricted. ing.
[0006]
[Problems to be solved by the invention]
However, when a square-medium slide member having a cutout formed in a cable is fixed by caulking, the mounting direction (direction around the axis) of the slide member is determined in one direction with respect to the housing (in other words, the slide member is , With respect to the housing.)
[0007]
Therefore, if the cable end on the lock cam side is fixed first, the direction around the axis of the cable is determined, and unless the slide member is rotated, the cable cannot be correctly attached to the housing. However, rotating the slide member leads to twisting of the cable, so it cannot be said that the assembling property is good, and it is not preferable to use the cable in a twisted state even if it is used. It is also difficult to twist the cable (steel wire) greatly.
[0008]
The present invention has been made to solve the above problems, and has as its object to provide a mechanical shift lock device in which a cable can be easily assembled.
[0009]
[Means for Solving the Problems]
The invention according to claim 1 is a mechanical shift lock device in which a shift operation of a shift lever is locked at a parking range position and the lock is released by a special operation of a driver. A lock cam that prevents a shift operation, a cable having one end connected to the lock cam, a lock member that moves by the special operation, and a radial direction in which the lock member in a state where the special operation is released can abut. A lock receiving member having a stopper surface along the axis, having a circular cross section perpendicular to the axis, connected to the other end of the cable in an axial direction parallel to the cable, and slidably receives the lock receiving member. A mounting hole is provided, and the mounting hole has a housing that is open on one side in the sliding direction of the locking receiving member .
[0010]
According to a second aspect of the present invention, in the mechanical shift lock device according to the first aspect, the stopper surface is continuous in a circumferential direction.
[0011]
According to a third aspect of the present invention, in the mechanical shift lock device according to the first or second aspect, an end of an outer cable into which the cable is slidably inserted is attached, and an opening of the attachment hole is provided. And a cap which is locked in the mounting hole so as to close the opening.
[0012]
According to a fourth aspect of the present invention, in the mechanical shift lock device according to any one of the first to third aspects, the lock member is connected to a key switch via a key interlock cable. It is characterized by.
[0013]
[Action]
According to the present invention, in the state where the shift lever is shifted to the parking range position, unless the driver performs a special operation, for example, the driver must not depress the brake pedal or insert the key into the key cylinder to rotate from the LOCK position to the ACC position. Since the stopper surface of the lock receiving member contacts the lock member, the lock receiving member cannot be moved. Therefore, the lock cam connected to the lock receiving member via the cable prevents the shift operation of the shift lever at the parking range position.
[0014]
On the other hand, when the driver performs a special operation, the stopper surface of the lock receiving member does not come into contact with the lock member, so that the lock receiving member can be moved. Therefore, the lock cam connected to the lock receiving member via the cable can be moved in the shift operation releasing direction, and the shift lever can be put into a range position other than the parking range.
[0015]
In addition, since the lock receiving member has a circular cross section perpendicular to the axis, that is, the lock receiving member is a round bar, the mounting direction of the lock receiving member does not relate to the twisting of the cable.
[0016]
In addition, by making the stopper surface continuous in the circumferential direction, the mounting direction of the locking receiving member has no relation to the twist of the cable.
[0017]
Note that the stopper surface may be annular or circular.
[0018]
Further, the end of the outer cable into which the cable is slidably inserted is attached, and the cap has a cap which is locked in the mounting hole so as to close the opening of the mounting hole, so that the locking receiving member is provided in the housing. Easy to set.
[0019]
In addition, since the lock member is connected to the key switch via the key interlock cable, the special operation can be performed by the key switch.
[0020]
【Example】
Hereinafter, an embodiment of the mechanical shift lock device of the present invention will be described with reference to FIGS.
[0021]
First, a lock mechanism used in the mechanical shift lock device is shown in FIGS. When the shift lever knob button 17 provided on the shift lever 1 is pressed, the detent pin 3 is pushed down in FIG. 7 and the shift lever 1 is rotated in the vehicle front-rear direction (arrow S direction). The position of engagement with the detent groove 7 is changed to sequentially shift to a P (parking) range, an R range, an N range, a D range, or the like. The detent pin 3 is urged upward in FIG. 7 by the urging force of a return spring (not shown), and a lock cam 9 is provided near the detent pin 3, and the detent pin 3 of the shift lever 1 at the P position is provided. Is accommodated in the U-shaped groove 9 </ b> A, and is turned around the shaft 11. Then, with the shift lever 1 at the position of the P range shown in FIG. 7, the lock cam 9 rotates in the direction of arrow L and is fixed at the position shown (lock position), and the detent pin 3 is detented for the P range. The movement in the direction of pulling out from the groove (downward in FIG. 7) is prevented. Therefore, the shift lever 1 shifts from the P range to another range unless the lock cam 9 rotates in the direction opposite to the direction of the arrow L in FIG. 7 and the detent pin 3 moves to the position (release position) where it comes out of the U-shaped groove 9A. It is not possible.
[0022]
Thus, the rotation of the lock cam 9 to the lock position and the release position is interlocked with the inner cable 19 connected to the lock cam 9. The inner cable 19 is inserted into the outer cable 216 and slidably supported.
[0023]
As shown in FIGS. 1 and 6, the other end of the inner cable 19 is connected to a first slide member 23 as a lock receiving member in the housing 21.
[0024]
The first slide member 23 is accommodated in the housing 21 so as to be slidable by a predetermined dimension in the directions of arrows A and B.
[0025]
The housing 21 is a molded product of a synthetic resin and can be divided into a top housing 21A and a bottom housing 21B as shown by a two-dot chain line in FIG. The top housing 21A has a concave portion 200 formed on the inner peripheral portion of the mating surface when assembled with the bottom housing 21B. The bottom housing 21B has the concave portion 200 formed on the mating surface when assembled with the top housing 21A. A convex portion 202 to be fitted is formed (a so-called spigot portion is formed).
[0026]
As shown in FIGS. 1 and 6, a cap 218, which is a synthetic resin molded product, is adhered to the other end of the outer cable 216. A pair of elastically deformable mounting portions 220 are formed in the cap 218, and each mounting portion 220 is formed with a square hole 222.
[0027]
On the other hand, mounting holes 224 are formed in the top housing 21A and the bottom housing 21B, and a part of the cap 218 is inserted into the mounting holes 224. The top housing 21 </ b> A and the bottom housing 21 </ b> B are formed with locking projections 226 having a triangular cross section which are locked in the square holes 222 of the mounting portion 220 when the cap 218 is inserted into the mounting hole 224.
[0028]
As shown in FIGS. 1 and 2, hook claws 204 used for temporary fixing to the bottom housing 21B are formed at a plurality of places on the top housing 21A, and the hook claws 204 are hooked on the bottom housing 21B. A hook portion 206 is formed at a plurality of locations.
[0029]
As shown in FIGS. 1 and 9, the top housing 21A and the bottom housing 21B each have two round holes 208 penetrating in the thickness direction. A metal pipe collar 210 is inserted into the round hole 208. Bolts 214 for attaching the housing 21 to the vehicle body 212 are inserted into the collar 210.
[0030]
The length L of the collar 210 is set to be slightly longer than the thickness T of the housing 21 or a dimension enough to slightly tighten the housing 21 to prevent the bolt 214 from being loosened after tightening.
[0031]
As shown in FIGS. 1 and 2, the first slide member 23 is formed to have a circular cross section, and a middle portion in the longitudinal direction and a part on the arrow A side are formed to have a small diameter. The side surface on the arrow B direction side of the small diameter portion 23A on the arrow A direction side of the first slide member 23 is a first lock receiving portion 25 as a stopper surface, and the arrow B direction side of the small diameter portion 23B at the middle portion in the longitudinal direction. Is formed as a second locking receiving portion 27 as a stopper surface.
[0032]
As shown in FIG. 6, a hole 228 having a predetermined depth is coaxially drilled in the small diameter portion 23A of the first slide member 23, and the other end of the inner cable 19 is inserted into the hole 228. Later it is fixed by swaging.
[0033]
As shown in FIGS. 1 and 3, a slide pin 29 projects from the side surface of the housing 21 toward the front of the vehicle on the side of the first slide member 23. That is, the slide pin 29 is provided corresponding to the contact portion 32 fixed to the intermediate portion of the brake pedal 31.
[0034]
The slide pin 29 is slidably accommodated in the vicinity of the base 29A inside the lock pin 33, and is urged in the contact direction by a first spring 35 provided inside the lock pin 33.
[0035]
The lock pin 33 is accommodated in the housing 21 so as to be slidable in the vehicle front-rear direction by a predetermined dimension, and is urged by the second spring 37 in the contact direction.
[0036]
The projecting amount of the urged slide pin 29 is limited because the enlarged diameter portion 29A hits the inner wall of the lock pin 33. When the brake pedal 31 is depressed, the brake pedal 31 moves forward of the vehicle, and the contact portion 32 and the slide pin 29 are separated as shown in FIG.
[0037]
As shown in FIG. 7, the inner cable 19 is urged by the return spring 13 in a direction to be pulled out toward the shift lever 1. Further, the return spring 13 holds the lock cam 9 at the release position when the detent pin 3 reaches a position other than the P range.
[0038]
As shown in FIGS. 3 and 4, a lock projection 33 </ b> A is formed on the lock pin 33 on the front side of the vehicle as a lock member large enough to be locked by the first lock receiving portion 25.
[0039]
As described above, the inner cable 19 is connected to the lock cam 9, and when the lock cam 9 is at the lock position, the first slide member 23 is disposed at the lock position indicated by a solid line in FIG. 1, and the lock cam 9 is at the release position. In some cases, the first slide member 23 is located at a release position indicated by a two-dot chain line in FIG.
[0040]
As shown in FIG. 4, when the locking projection 33A of the lock pin 33 is locked to the first locking receiving portion 25, the inner cable 19 causes the lock cam 9 to resist the urging force of the return spring 13 (see FIG. 7). 7, the detent pin 3 is prevented from lowering from the illustrated position even if the shift lever knob button 17 is pressed.
[0041]
As shown in FIG. 7, the lock cam 9 is urged in a direction (clockwise) opposite to the arrow L direction by the urging force of the return spring 13, but the return spring (not shown) of the detent pin 3 is When the shift lever 1 reaches the P range, the detent pin 3 rotates the lock cam 9 to the position shown in the arrow L direction through the U-shaped groove 9A.
[0042]
Next, the key device 39 is shown in FIG. When the key 41 is inserted into the key cylinder 43 and rotated from the ACC position to the LOCK position (the direction of the arrow 44 in FIG. 8), the rotation of the cam 45 is transmitted to the pin 47 and the key interlock cable 49 is pulled (FIG. 8). Arrow 50 in the direction).
[0043]
The other end of the key interlock cable 49 is guided into the housing 21 and connected to the second slide member 53, as shown in FIGS. The second slide member 53 is accommodated in the housing 21 so as to be slidable by a predetermined dimension in the vehicle front-rear direction. Further, a mounting bracket 238 is fixed to an end of the outer cable 236 that supports the key interlock cable 49. A groove 240 is formed in the mounting bracket 238, and the top housing 21A and the bottom housing 21B are fitted into the groove 240 to fix the mounting bracket 238.
[0044]
The second slide member 53 is formed with a small-diameter through hole 230 through which the key interlock cable 49 is inserted, and a large-diameter hole 232 is formed on the front side of the vehicle. A columnar cable end 234 is caulked and fixed to the other end of the key interlock cable 49, and the cable end 234 is inserted into the hole 232.
[0045]
A locking projection 53A as a locking member is formed on the second slide member 53 on the front side of the vehicle. The locking projection 53A is inserted into a small-diameter portion 23B at a middle portion in the longitudinal direction of the first slide member 23. Therefore, the size is such that it can be locked to the second lock receiving portion 27. This locking is performed in a state where the second slide member 53 and the first slide member 23 are substantially orthogonal, as shown in FIGS.
[0046]
The locking projection 53A can be inserted into the small-diameter portion 23B when the first slide member 23 is at the lock position (when the lock cam 9 is at the lock position).
[0047]
In FIG. 2, reference numeral 55 denotes a return spring that urges the slide member 53 in the FR direction in the figure to slide when the key 41 is rotated from the LOCK position to the ACC position.
[0048]
Hereinafter, the operation of this embodiment will be described.
[0049]
7, the shift lever 1 is in the P range position and the lock cam 9 is in the lock position, and therefore, as shown in FIG. 4, the inner cable 19 and the first slide member 23 are also in the lock position.
[0050]
In the stopped state, the key 41 is in the lock position, so the second slide member 53 is locked with the second lock receiving portion 27, and the lock position of the first slide member 23 is maintained. If the brake pedal 31 is not depressed, the slide pin 29 is pushed in the direction opposite to the direction indicated by the arrow FR in FIG. Then, the lock pin 33 and the second spring 37 are bent through the lock pin 33, and the lock pin 33 is retracted, and the rear end of the lock pin 33 is locked to the first lock receiving portion 25. Therefore, even if a pressing force is applied to the shift lever knob button 17, the lock cam 9 does not rotate, and thus the detent pin 3 cannot be pushed down, so that the shift lever 1 does not shift to another range position.
[0051]
When the inner cable 19 and the first slide member 23 are in the lock position, as shown in FIG. 1, the second slide member 53 can freely enter and exit the second lock receiving portion 27. It can be rotated from the LOCK position to the ACC position by being inserted into the key cylinder 43 (see FIG. 8), and can also be rotated in the opposite direction.
[0052]
To shift the shift lever from the P range position to another range position, for example, the D range position, depress the brake pedal 31 and move the key 41 from the LOCK position to the ACC position (and further to the engine operating position as necessary). ). As a result, the lock pin 33 comes off from the first lock receiving portion 25 as shown in FIG. 1, and the second slide member 53 comes off from the second lock receiving portion 27, so that the inner cable 19 becomes movable. Thus, the lock cam 9 can be easily rotated. Then, by pushing the shift lever knob button 17, the detent pin 3 is pushed down, thereby rotating the lock cam 9 in the unlocking direction. When the lock is released in this manner, the shift lever 1 can be shifted to an arbitrary range position.
[0053]
When the shift lever 1 is shifted to a range position other than the P range position, the first slide member 23 moves in the direction of arrow A as shown by a two-dot chain line in FIG. Will face the large diameter portion.
[0054]
In this case, when the brake pedal 31 comes to a position where the brake pedal 31 is not depressed, the slide pin 29 retreats, the first spring 35 bends, and the locking projection 33A comes into contact with the large diameter portion of the first slide member 23, and The spring 37 hardly bends.
[0055]
Also, since the locking projection 53A cannot be inserted into the diameter portion 23B, the second slide member 53 and the key interlock cable 49 cannot move in the direction opposite to the arrow FR direction, and therefore, the key 41 moves from the ACC position to the LOCK position. Cannot rotate.
[0056]
When the shift lever 1 is returned to the P range and the detent pin 3 rotates the detent cam 9 to the lock position by the urging force of the return spring, the inner cable 19 moves the first slide member 23 to the lock position in FIG. Key 41 can be moved to the LOCK position.
[0057]
Further, in the present embodiment, the inner cable 19 and the outer cable 216 can be easily attached on the housing 21 side.
[0058]
In other words, the cap 218 may be inserted into the mounting hole 224 of the housing 21 so that the outer cable 216 changes from the state shown by the two-dot chain line to the state shown by the solid line as shown in FIG. During the insertion, the elastically deformable mounting portion 220 comes into contact with the triangular locking projection 226 and opens. When the locking projection 226 corresponds to the square hole 222, the mounting portion 220 elastically returns and the locking projection 226 becomes square hole. It is inserted into 222 and locked.
[0059]
On the other hand, since the inner cable 19 has the first slide member 23 in the shape of a round bar, there is no directionality in the mounting direction (axial direction). Therefore, the cap 218 of the outer cable 216 can be easily set on the housing 21 simply by inserting the cap 218 into the mounting hole 224.
[0060]
Further, since a so-called spigot portion is formed in the bottom housing 21B and the top housing 21A to prevent entry of foreign matter into the housing 21, environmental resistance is good.
[0061]
Also, the first slide member 23 can be mass-produced with an NC lathe or the like, since a part of the round bar can be coaxially cut into a small diameter and the hole 228 for inserting the inner cable 19 can be coaxially processed. It is easier to process and has higher production efficiency than the conventional one in which a notch is machined by milling or the like in a part of the prism member. In the case of a rod, it can be easily chamfered with a cutting tool.
[0062]
In the above-described embodiment, a hole 228 having a predetermined size is formed in the small-diameter portion 23A of the first slide member 23, and the other end of the inner cable 19 is inserted into the hole 228 and fixed by caulking. As described above, the inner cable 19 may be coaxially penetrated through the first slide member 23, and the other end of the inner cable 19 may be fixed by caulking with the small-diameter portion 23A formed on the opposite side to the above embodiment. In this case, the inner cable 19 is set to have a predetermined length in advance, and a gap M between a predetermined position of the cap 218 of the outer cable 216 and a predetermined position of the first slide member 23 is determined by a jig or the like, and then caulked and fixed. Cut the other end of the surplus inner cable 19. Thereby, the position of the first slide member 23 disposed on the casing 21 can be easily fixed.
[0063]
In the above-mentioned fixing method, the interval M changes depending on the depth of the hole 228 and the tolerance of the length of the inner cable 19, so that high precision is required for processing.
[0064]
Further, in the above-described embodiment, the second slide member 53 or the lock pin 29 is substantially orthogonal to the first slide member 23, but these may not necessarily be orthogonal and may intersect at a certain angle.
[0065]
【The invention's effect】
As described above, since the mechanical shift lock device of the present invention has the above-described configuration, the mounting direction of the lock receiving member is not related to the torsion of the cable, and an excellent effect that the cable is easily assembled is provided. Have. In particular, by making the stopper surface continuous in the circumferential direction, the mounting direction of the locking receiving member has no relation to the twist of the cable.
[Brief description of the drawings]
FIG. 1 is a horizontal sectional view of a housing of an apparatus according to an embodiment of the present invention.
FIG. 2 is a sectional view taken along line 2-2 of FIG.
FIG. 3 is a sectional view taken along line 3-3 of FIG.
FIG. 4 is a diagram showing the operation of FIG. 1;
FIG. 5 is a perspective view of the interior of an automobile showing an overall view of the embodiment.
FIG. 6 is a sectional view taken along line 6-6 of FIG. 1;
FIG. 7 is a side view of the shift lever.
FIG. 8 is an enlarged perspective view showing the key device of FIG. 5;
FIG. 9 is a sectional view taken along line 9-9 of FIG. 1;
FIG. 10 is another embodiment of the first slide member.
[Explanation of symbols]
1 shift lever 9 lock cam 19 inner cable 23 first slide member (locking receiving member)
25 1st lock receiving part (stopper surface)
27 Second lock receiving part (stopper surface)
33A Locking projection (locking member)
53A Locking projection 53A (locking member)

Claims (4)

A mechanical shift lock device in which a shift operation of a shift lever is locked in a parking range position and the lock is released by a special operation of a driver,
A lock cam for preventing a shift operation of the shift lever in a parking range position;
A cable having one end connected to the lock cam;
A lock member moved by the special operation;
The lock member in the state where the special operation has been released has a stopper surface along a radial direction that can be abutted, the cross section perpendicular to the axis is circular, and the axial direction is parallel to the other end of the cable. A locking receiving member connected by
A housing having a mounting hole for slidably receiving the locking receiving member, wherein the mounting hole is open on one side in the sliding direction of the locking receiving member,
A mechanical shift lock device comprising: The mechanical shift lock device according to claim 1, wherein the stopper surface is continuous in a circumferential direction. An end of an outer cable into which the cable is slidably inserted, the end of the outer cable being attached, and a cap which is locked in the attachment hole so as to close an opening of the attachment hole. 3. The mechanical shift lock device according to 2. The mechanical shift lock device according to any one of claims 1 to 3, wherein the lock member is connected to a key switch via a key interlock cable.

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