JPH10287144A - Shift device for automatic transmission, and shift lock mechanism for shift device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To simplify the structure by forming a shift pattern, which has an irregular cam-like change part, on a base plate, and providing a plunger, which can be slid in the elastically pressurizing condition along the shift pattern, in a lower part of a shift lever. SOLUTION: A shift pattern having an irregular cam-like change part, which determines a shift position of a shift lever S at the time of automatic transmission mode and at the time of manual transmission mode, is provided at a nearly central part of a top surface inside of a base plate B, which forms a bottom part of a shift device. A plunger 2, which is slid in the elastically pressurizing condition along the shift pattern 1, is provided in a lower part of a shift lever S. The structure of a shift device for a transmission, which can cope with both transmission modes, is thereby simplified, and the number of part items and the assembling cost are remarkably lowered.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement of a shift device of an automatic transmission, and more particularly, to a structure of a shift device of a transmission which can be operated in both an automatic shift mode and a manual shift mode. The present invention relates to a significantly simpler shift device for an automatic transmission and a shift lock mechanism suitable for being incorporated in the shift device.

[0002]

2. Description of the Related Art As is well known, a manual transmission of a type in which an operator manually shifts a gear using a clutch and a shift lever has been used for a long time as an automobile transmission. However, an automatic transmission that does not require a clutch has been developed, which makes gear shift operation very easy,
In particular, a fluid automatic transmission using a torque converter capable of continuously and smoothly changing the torque and the speed has been mounted on many automobiles and has rapidly spread. As a result, vehicles equipped with automatic transmissions have recently become the mainstream in place of manual transmissions.

However, in recent years, so-called "driving pleasure" has been demanded for not only enjoying a quiet mood for driving but also for enjoying driving techniques. For this reason, automobiles with automatic transmissions have become popular among passenger cars equipped with a gear shift function that allows a driver to manually select an arbitrary gear.

In response to such demands, transmissions that can be operated in both an automatic transmission mode and a manual transmission mode have been researched and developed, and any one of the transmission modes can be freely selected according to the driver's preference. It is now possible to simultaneously enjoy the advantages of both the easy drive in the automatic transmission mode and the driving pleasure in the manual transmission mode with a single vehicle.

As such a transmission compatible with both shift modes, there is, for example, a "shift device for an automatic transmission for vehicles" described in the specification of Japanese Patent Application Laid-Open No. 9-4703. This shift device includes a shift lever for performing a desired shift operation, a gate plate on which an I pattern in an automatic shift mode and an H pattern in a manual shift mode are formed, and two side plates to which the gate plate is fixed. An upright stationary member and a mechanism for preventing inadvertent movement of the shift lever in the automatic shift mode, the mechanism being formed in a cam hole formed in one side plate of the stationary member and a lower portion of the shift lever. An inhibit function unit comprising:
A detent mechanism formed in a retainer on the side of the shift lever to prevent the shift lever from being inadvertently moved by generating a click feeling of the shift lever and a holding force at each shift position in a manual shift mode. A left and right detent function part comprising a cam and a piston pin housed in a cross joint inside the retainer is disposed removably on a protrusion formed on the retainer, and is integrated with the shift lever in a manual shift mode. And a detent mechanism that includes a detent spring that abuts on a cam surface formed on the detent lever. Various functions required for mode operation (shift mode switching, gear shift, inhibit function, detent machine It is realized, etc.). The shift lever is guided by the gate plate and a gate pin fixed to a lower portion of the retainer and having a lower end portion (a tip portion) inserted into a groove-shaped shift pattern formed in the gate plate. Has been realized.

In many cases, the shift device is provided with a shift lock mechanism. The shift lock mechanism locks the movement of the shift lever to a predetermined shift position in the automatic shift mode so that the shift lever can be used when shifting gears. A sudden start of the car can be prevented. As a prior art of this shift lock mechanism, for example, Japanese Utility Model Laid-Open No. 64-4942
There is a `` locking device for a shift lever for an automatic transmission '' described in the specification of No. 4, and this locking device shifts by pressing a shift lever for selecting a plurality of shift positions and pressing a push button provided on the shift lever. A detent pin arranged movably up and down along the axial direction of the lever,
A detent plate arranged on the machine frame so as to regulate the movement of the shift lever to each shift position by the cooperation with the detent pin, and the movement of the shift lever to a predetermined shift position in cooperation with the detent pin. And a lock member arranged on the machine frame so as to be locked. Each member such as a lock member of the lock device, a machine frame supporting the lock member, and a shaft for fixing the lock member to the machine frame is increased in thickness and thickness to secure sufficient strength. I have. As a result, even if the driver erroneously operates the shift lever to the shift position where the sudden start of the vehicle may occur, it is possible to sufficiently withstand the operation load.

However, in the shift device of the known automatic transmission as described above, components such as cams and pins for realizing various functions are separately prepared for each function. Therefore, there is a problem that the structure is inevitably complicated, and the number of parts and the assembly cost are greatly increased. Also, the shift lock mechanism in the conventionally known shift device also has a large thickness and thickness of each member in order to secure sufficient strength, so that the overall size and weight of the shift lock mechanism increases, There was a problem that the cost was high.

[0008]

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems in a conventional transmission which can be operated in both an automatic transmission mode and a manual transmission mode. An object of the present invention is to provide a shift device of an automatic transmission in which the structure of the shift device of the transmission capable of responding to the shift mode is much simpler than that of the related art.

Another technical object of the present invention is to provide a shift lock mechanism suitable for assembling into the shift device.

[0010]

Means adopted by the present inventor for solving the above technical problem will be described below with reference to the accompanying drawings.

That is, the present invention relates to a shift device for an automatic transmission in which a shift position for an automatic shift mode and a shift position for a manual shift mode are provided, wherein the shift position of the shift lever S for the automatic shift mode is provided. , The manual shift side shift pattern groove 12, which defines the shift position for the manual shift mode of the shift lever S, the automatic shift side shift pattern groove 11, and the manual shift side shift pattern groove 12. A base plate B provided with a groove-shaped communicating portion 13 for communicating with the shift lever S, and a concave and convex cam-shaped change portion formed at the bottom of each of the automatic and manual shift-side shift pattern grooves 11 and 12; A sliding member disposed at a lower portion of the base plate and slidably pressed against the groove portion (11, 12, 13) in the base plate B, By employing the means of serial change portion cooperating with including a plunger 2 to attain the detent function and inhibit function,
It is characterized in that the above-described problem in the shift device has been solved.

Further, the present invention relates to a shift device for an automatic transmission in which an automatic shift side shift pattern groove 11 and a manual shift side shift pattern groove 12 are provided in a required position of a base plate B constituting the shift device. A recessed opening L1 which is fitted in the opening L1 so as to be able to move up and down, and prevents the shift lever S from moving to a predetermined shift position during floating to lock the same; It is characterized in that the above-mentioned problem in the shift lock mechanism has been solved by adopting a means of disposing a lock member L2 which can release a locked state by sinking to the bottom of L1.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in more detail based on embodiments shown in the accompanying drawings. 1 is an explanatory front view showing a cross section of a part of the internal structure of the shift device of the automatic transmission according to the embodiment of the present invention, and FIG. 2 is a cross sectional view showing a part of the internal structure of the shift device of the present embodiment. Illustrated side view,
3 is a plan view of the shift device of the present embodiment, FIG. 4 is an exploded perspective view of each component in the vicinity of the base plate of the shift device of the present embodiment, FIG. 5 is a partial perspective view of the base plate of the shift device of the present embodiment, and FIG. FIG. 7 is an enlarged sectional view taken along line XX of FIG. 5, FIG. 7 is an enlarged sectional view taken along line YY of FIG.
8 is an enlarged sectional view taken along line ZZ of FIG. 5, and FIG.
, FIG. 10 is a partial front view showing a cross section of an internal structure near the plunger of the shift device of the present embodiment in an automatic shift mode, and FIG. 11 is a shift device of the present embodiment in a manual shift mode. FIG. 12 is a partial front explanatory view showing the internal structure near the plunger in cross section, FIG. 12 is a partial cross sectional explanatory view showing the operation state of the plunger by the inhibit release sleeve of the shift device of the present embodiment in the automatic transmission mode, and FIG. FIG. 14 is a front view showing a modification of the elastic body of the form shift device, FIG. 14 is a front view showing another modification of the elastic body of the shift device of the present embodiment, and FIG. 15 is a shift embodiment of the present invention. Exploded perspective view and diagram of the lock mechanism
16 is an explanatory side view showing a locked state of the shift lock mechanism of the present embodiment, and FIG. 17 is an explanatory side view showing an unlocked state of the shift lock mechanism of the present embodiment.

First, an overall structure of a shift device for an automatic transmission according to an embodiment of the present invention will be described with reference to FIGS. In the drawings, the one designated by the reference symbol S is a shift lever for switching and selecting a shift position in an automatic shift mode and a shift position in a manual shift mode in an automobile. A substantially spherical knob K is provided at the top of the shift lever S.
In the vicinity of the lower portion of the knob K, an inhibit release sleeve H described later is provided. Further, in the shift device of the present embodiment, as shown in FIG.
The transmission mechanism employs an automatic transmission mode of an I-shaped pattern including a D range and an automatic transmission mode of an I-shaped pattern, and a manual transmission mode of an H-shaped pattern capable of switching between four speeds from a first speed to a fourth speed (-).

Next, the internal structure of the shift device of this embodiment will be described in detail with reference to FIGS. In the figure, what is indicated by reference numeral B is a base plate that forms the bottom of the shift device. A shift pattern 1 that defines the shift position of the shift lever S in the automatic shift mode and the shift position of the shift lever S in the manual shift mode is provided substantially at the center of the inner upper surface of the base plate B. The shift pattern 1 includes a substantially I-shaped automatic shift-side shift pattern groove 11 that defines a shift position in the automatic shift mode, a substantially H-shaped manual shift-side shift pattern groove 12 that defines a shift position in the manual shift mode, And a groove-shaped communication portion 13 communicating the shift pattern grooves 11 and 12.
An uneven cam-shaped change portion is formed at the bottom of each groove.

The shift pattern groove on the automatic transmission side.
A convex resistance ridge R is formed in a communication portion 13 between the shift pattern groove 11 and the manual transmission side shift pattern groove 12.
Suppresses free movement between the automatic shift-side shift pattern groove 11 and the manual shift-side shift pattern groove 12 like a watershed, so that the shift lever S can be switched safely and reliably.

As shown in FIG. 5, the shift pattern 1 of the present embodiment includes three parts: an automatic shift side shift pattern groove 11, a manual shift side shift pattern groove 12, and a communication portion 13. The automatic shift-side shift pattern groove 11 is formed with irregularities in a substantially I-shaped pattern in which the shift position of the shift lever S in the automatic shift mode can be switched and selected. It is shown in The manual shift side shift pattern groove 12 is formed in a substantially H-shaped pattern in which the shift position of the shift lever S in the manual shift mode can be switched and selected, and the sectional shape of the uneven cam-shaped change portion is shown in FIG. 9 are shown in FIG. The communication portion 13 is formed with a convex resistance ridge R for giving a resistance so that the shift lever S does not inadvertently move from one shift mode to the other shift mode. Is shown in FIG. By skillfully restricting the movement of the shift lever S by such a concave and convex portion of the shift pattern 1, it is possible to perform an automatic shift, a manual shift, and a shift mode switching operation. Note that the cross-sectional shape of FIG.
This is a concave and convex cam-shaped change portion required for selecting the shift position between the first and second speed shift positions. The cross-sectional shape of FIG. 8 is necessary for selecting the third shift position and the fourth speed shift position in the manual shift mode. 9 is a cross section of FIG. 9 showing the neutral position of the manual transmission side shift pattern groove 12, the D range position of the automatic transmission side shift pattern groove 11, and the manual transmission side shift pattern groove 12 and the automatic transmission. 3 is a pattern showing a communicating portion 13 with a side shift pattern groove 11;

In FIG. 4, what is indicated by reference numeral 2 is a sliding member which slides in a resilient state along the shift pattern 1 and is a substantially rod-shaped plunger provided below the shift lever S. . The tip 21 of this plunger 2
Is projected downward in the shape of a pin, and the upper part is a hollow rod 22
It has become. The pin-shaped tip 21 is formed in a substantially spherical shape, and the tip 21 comes into contact with the groove of the shift pattern 1 and slides. A slit is formed in a part of the peripheral surface of the hollow rod body 22 of the plunger 2, and a rod described later can be inserted through the slit.

In FIG. 4, what is indicated by reference numeral 3 is an elastic body disposed at the upper end of the plunger 2, and in this embodiment, a coil spring 31 is used. The elastic body 3 (coil spring 31) presses the plunger 2 toward the groove of the shift pattern 1 from above.

In FIG. 4, what is indicated by reference numeral 4 is a rod inserted into the shift lever S. At the lower end of the rod 4, a disk-shaped pull-up portion 41 is formed, and this pull-up portion 41 is in contact with the inner upper surface of the hollow rod 22 of the plunger 2 so that the plunger 2 can be pulled up. Further, a cylindrical connecting portion 42 is formed at the upper end of the rod 4, and a rod can be inserted into a hole penetrating in the horizontal direction of the connecting portion 42 so as to be connectable to an inhibit release sleeve H described later. I have.

In FIG. 4, what is designated by the reference numeral 5 is a lever main body constituting a frame of the shift lever S.
The rod 4 is inserted into the cylinder 51 of the lever body 5, and a substantially rectangular parallelepiped cross joint 52 is formed on the lower peripheral surface of the cylinder 51. -Shaped X-axis bolt housing 52a and Y-axis bolt hole
52b are formed to intersect. In addition, what is indicated by reference numeral 6 is a first swing plate that is swingably disposed on one side surface of the cross joint portion 52, and what is indicated by reference numeral 7 is the first swing plate. A second swing plate, which is swingably disposed on the other side surface, is indicated by reference numeral 8 and is a pair of side plates standing upright on the base plate B.

The first swing plate 6 and the second swing plate 7 have shaft holes 61 and 71 and square holes 62 and 71, respectively.
72 are bored, and shaft holes 81 are also bored in the pair of side plates 8.8, respectively. These shaft holes 61
By inserting the X-axis bolt BX into the 71, 81, 81, the collar 91 and the friction generating mechanism F and fixing the X-axis bolt BX with the washer 92 and the nut 93, the first swing plate 6 The second swing plate 7 is supported on the base plate B so as to be swingable in the front-rear direction.

The X-axis bolt BX is provided with a shaft hole BX1 in a direction perpendicular to the longitudinal direction, and the cross joint 52 is provided with Y-axis shaft holes 52b. ing. The shaft hole BX1 and the Y-axis shaft hole 52b
The Y-axis bolt BY is inserted into the 52b and the Y-axis bolt BY
Are fixed with nuts 94. As a result, the shift lever S having the cross joint portion 52 is fixed to the X-axis bolt BX.
And the Y-axis bolt BY as a rotation axis, the front-rear direction (Y-axis direction of the arrow in FIG. 4) and the left-right direction (X of the arrow in FIG. 4).
(Axial direction).

The first swing plate 6 sandwiches the friction generating mechanism F together with one of the side plates 8, and the projection 53 formed on the side of the lever main body 5 is in its first position only in the manual shift mode. By engaging with the square hole 62 of the swing plate 6, it rotates integrally with the lever body 5. The friction generating mechanism F is a rectangular plate member, and a pair of friction plates 96, 96 which are non-rotatably supported by the first swing plate 6 and the square grooves 63 and 82 formed in the one side plate 8. And a wave washer 95 sandwiched between the friction plates 96 in a compressed state. In the manual shift mode, a frictional force is generated against the swinging of the lever body 5 in the front-rear direction, and the A load is applied.

On the other hand, the second swinging plate 7 has a similar projection (not shown) formed on the side opposite to the projection 53 of the lever main body 5 only in the automatic shift mode. 7 is rotated integrally with the lever body 5 by engaging with the square hole 72. The second swing plate 7 is connected to a manual valve (not shown) of a valve body of the automatic transmission via a control cable (not shown). Switch to each range position.

As the elastic body 3 of the present embodiment, a variable type coil spring 31 having different elasticity depending on the part is used. The lower part of the coil spring 31 is a weak elastic part 31a, and the upper part is a strong elastic part 31b. It has become. Further, in the shift pattern 1 of the base plate B of the present embodiment, the groove bottom of the manual shift side shift pattern groove 12 is formed at a relatively higher position than the groove bottom of the automatic shift side shift pattern groove 11. The manual shift-side shift pattern groove 12 and the automatic shift-side shift pattern groove 11 are partitioned by a convex resistance ridge R so as to be able to cross over. An operation state near the plunger 2 of the shift device according to the present embodiment having the above-described internal structure will be described with reference to FIGS. 10 (automatic shift mode) and FIG. 11 (manual shift mode).

In the automatic shift mode shown in FIG. 10, the plunger 2 provided below the shift lever S is urged by the coil spring 31 so that the tip 21 of the plunger 2 becomes the groove of the shift pattern groove 11 on the automatic shift side. While contacting the bottom,
The upper part 41 of the lower end of the rod 4 abuts on the inner upper surface of the hollow rod body 22 of the plunger 2. In this state, the distance to the groove bottom of the automatic shift-side shift pattern groove 11 is increased and the stroke of the plunger 2 is increased.
The elastic force of the lower weak elastic portion 31a mainly acts, and the plunger 2 is not urged too strongly.

On the other hand, in the manual shift mode of FIG. 11, the manual shift side shift pattern groove formed at a position relatively higher than the groove bottom of the automatic shift side shift pattern groove 11.
Since the distal end portion 21 of the plunger 2 abuts against the groove bottom of the groove 12, the degree of compression of the coil spring 31 increases, and as a result, the coils of the weak elastic portion 31a come into close contact with each other and the elastic pressure generated by the portion 31a The force hardly acts, and the elastic force by the strong elastic portion 31b above the coil spring 31 mainly acts. Therefore, the force for urging the plunger 2 below the shift lever S toward the manual shift side shift pattern groove 12 becomes strong, so that even when an external force due to vibration or collision is applied to the vehicle, the shift lever S can be stably shifted to each shift position. While being held, the shift lever S can be prevented from moving to a shift position not intended by the driver, and the moderation feeling when the shift lever S is shifted to each shift position in the manual shift mode can be improved. it can. Here, the sense of moderation means that the shift change completion is clear when the shift lever S is operated, there is a feeling that the shift lever S is pulled into each shift position when the shift lever S is operated, and the click is clear when the shift lever S is operated. It means that there is a great response.

The switching operation from the automatic transmission mode to the manual transmission mode or the reverse operation is performed by moving the shift lever S with a required force to the position of the automatic transmission side shift pattern groove 11 or the manual transmission side shift pattern groove 12. This is made possible by leaning in the direction and climbing over the convex resistance ridge R. The presence of this resistance ridge R ensures the stability and certainty of the selected shift mode and provides a safe switching operation.

As shown in FIG. 12, in the automatic shift mode, the plunger 2 below the shift lever S is pulled up from the bottom of the automatic shift side shift pattern groove 11 to switch the shift lever S to each shift position. . This lifting operation is performed using an inhibit release sleeve H (see FIG. 1 and the like) provided near the lower portion of the knob K on the top of the shift lever S. That is, the inhibit release sleeve H is connected to the connecting portion 42 at the upper end of the rod 4, and in the automatic transmission mode, the sleeve H is connected to the plunger 2 via the pull-up portion 41 at the lower end of the rod 4 (FIG. Ten
When the flange Hf of the sleeve H is lifted up with a finger, the plunger 2 rises against the downward elastic force of the coil spring 31, and when the finger is released from the flange Hf, the plunger 2 moves down to its original position. Return to In this case, as described above, since the plunger 2 in the automatic shift mode is not urged so strongly, the force for pulling up the flange Hf of the sleeve H with a finger is small. .., The leading end 21 of the plunger 2 rides over the steps 11a, 11a,... Of the groove bottom of the automatic transmission side shift pattern groove 11, and releases the inhibit state of the shift lever S in the automatic transmission mode to perform a desired shift. You can switch to the position. Here, the inhibit state refers to a state in which the movement of the shift lever S that is in a certain shift position in the automatic shift mode is blocked. In the present embodiment, the movement is a step 11a in the automatic shift side shift pattern groove 11. Has been blocked by In the manual shift mode, the sleeve H
Even if the flange Hf is pulled up by a finger, the plunger 2 does not rise because the sleeve H and the plunger 2 are not connected as shown in FIG. Therefore, in the manual shift mode, the detent function always works reliably regardless of the operation of the sleeve H.

As described above, the shift pattern 1 having the concave and convex cam-shaped change portions necessary for the shift operation in both the automatic shift mode and the manual shift mode is skillfully formed on the base plate B, and along the shift pattern 1. By providing the plunger 2 slidable in the resilient state below the shift lever S, it is possible to greatly simplify the structure that was very complicated in a conventional shift device of a transmission that can handle both shift modes, It is possible to greatly reduce the number of parts and the assembly cost. In addition, the plunger 2 cooperates with the cam-shaped change portion of the shift pattern 1 to achieve the inhibit function in the automatic shift mode and the detent function in the manual shift mode, and the plunger 2 below the shift lever S shifts. In cooperation with the pattern 1, the shift lever S is reliably guided along the shift pattern 1.

Next, a shift lock mechanism according to an embodiment of the present invention will be described with reference to FIGS. The shift lock mechanism according to the present embodiment is applied to the shift device of the automatic transmission described above, and the structure of the base plate B in the shift device is skillfully used. In the figure, reference numeral L1
What is indicated by is an opening recessed at a required position of the base plate B constituting the shift device. The opening L1 is formed in the vicinity of a concave portion (corresponding to the R range in FIG. 3) adjacent to the concave portion (corresponding to the P range in FIG. 3) at the tip of the automatic transmission side shift pattern groove 11 of the base plate B.
By forming the opening L1 at this position, it is possible to prevent the shift lever S from switching from the P range to the R range in the automatic transmission mode.

The one designated by reference numeral L2 is the opening L
1 is a lock member which is fitted into the housing 1 so as to be able to move up and down, and is formed in a substantially block shape. At the lower part of the block-shaped lock member L2, slits L21 are respectively formed on substantially gate-shaped legs.
The connecting portions L21 and L21 formed with the holes a and L21a are formed, and engaging pins of a driving member described later can be inserted into the slits L21a of the connecting portions L21 and L21. An inclined portion L22 is formed at the upper end of the lock member L2, and the higher portion of the inclined portion L22 is directed toward the P range side of the automatic shift side shift pattern groove 11 to lock the lock member L2.
Into the opening L1. A flange L23 protrudes from an upper portion of the side surface of the lock member L2, and a rod end of a manual unlocking member described later contacts the upper surface of the flange L23.

A member designated by reference numeral L3 is a driving member for moving the lock member L2 up and down, and is inserted into and fixed to a mounting opening Bh provided in the base plate B.
At one end of the driving member L3, a rod-shaped connecting portion L32 around which a solenoid coil L31 is wound protrudes, and when a current flows through the solenoid coil L31 in conjunction with a brake operation, the rod-shaped connecting portion L32 moves forward and backward. It is movable. In the vicinity of the distal end of the rod-shaped connecting portion L32, engaging pins L32a and L32a project substantially at right angles to the longitudinal direction, and each of the engaging pins L32a is connected to the lock member L2.
It is inserted into each lower slit L21a from inside. Also,
The other end of the driving member L3 is connected to a lock control mechanism (not shown). The lock control mechanism detects the on / off state of the brake and the shift position of the shift lever S, and determines whether the solenoid coil L31 is energized. Is determined.

Reference numeral L4 designates a manual unlocking member for manually forcibly releasing the locked state of the shift lever S. This manual unlocking member L4 is
It comprises a rod L41 and a push button L42 on the upper end of the rod L41. When the push button L42 is pressed downward with a finger, the tip of the rod L41 pushes down the flange L23 of the lock member L2, and the lock member L2 descends into the opening L1, thereby forcibly locking the shift lever S. Will be released. The manual unlocking member L4 is connected to the driving member L
This is necessary when the lock member L2 cannot be lowered due to a failure such as 3 and the shift lever S cannot be switched from the P range to the R range.

Here, the operation of the shift lock mechanism configured as described above will be briefly described. As shown in FIG. 16, the lock member L2 normally has a part that floats from the opening L1 and protrudes from the surface of the base plate B. The protruding lock member L2 allows the lock member L2 to shift to the P range shift position. A certain shift lever S is prevented from moving to the shift position of the adjacent R range, and is in a locked state. When the shift position of the shift lever S is in the P range and the brake pedal is depressed (the brake is in the on state), current flows through the solenoid coil L31 of the driving member L3, and a rod-like shape is formed as shown by an arrow in FIG. The connecting portion L32 retreats and the lock member L2 sinks to the bottom of the opening L1. Then, the locked state of the shift lever S is released, and the shift lever S can be switched from the P range to the R range. When the shift lever S is switched to a position other than the P range or the brake is turned off from the unlocked state, the current flowing through the solenoid coil L31 is cut off, and the lock member L2 floats to lock the state as shown in FIG. Becomes That is, the lock member L2 sinks only when the shift position of the shift lever S is in the P range and the brake is on, and otherwise the lock member L2 floats. In the shift lock mechanism of this embodiment, an inclined portion L22 is formed at the upper end of the lock member L2, and the lower portion of the inclined portion L22 is fitted into the opening L1 toward the R range. Therefore, there is almost no step from the R range to the P range as shown in FIG.
As a result, the shift lever S can always be switched from the R range to the P range.

As described above, the opening L1 recessed in the base plate B constituting the shift device of the automatic transmission described above.
And a block-shaped lock member L2 which is fitted in the opening L1 so as to be able to move up and down, so that it can be easily and reliably incorporated into the shift device, and furthermore, it can be used in a conventional shift lock mechanism. It is possible to obtain a shift lock mechanism which is more compact and extremely superior in strength.

Although the embodiments of the present invention are generally as described above, the present invention is by no means limited to the above-described embodiments, and various modifications are possible within the scope of the claims. For example, as a modified example of the elastic body 3, a coil spring having two elastic members 32 and 33 having different elasticities arranged in series as shown in FIG. It is also possible to use an urging mechanism in which the coil springs 32 and 33 act mainly in the manual shift mode and in the shift mode switching. Also, as shown in FIG. 14, two coil springs 34 and 35 having different free lengths are arranged concentrically. In the automatic transmission mode, the coil spring 34 having the longer free length mainly acts, At the time of the shift mode and at the time of switching the shift mode, both coil springs 34 are used.
It is also possible to configure a biasing mechanism in which the 35 operates, or to configure a similar biasing mechanism by simply disposing these coil springs 34 and 35 in parallel instead of concentrically. Further, it is also possible to use a rubber-like elastic body 3 instead of the coil spring as described above.

In the shift pattern 1 of the present embodiment, patterns corresponding to the I-type (automatic transmission mode) and the H-type (manual transmission mode) are provided on the base plate B, but depending on the type of mounted vehicle. Set the manual shift side shift pattern to the H pattern of 5th speed or higher or UP /
A shift pattern 1 of various shapes such as a DOWN type (sequential type) or a gate type automatic shift side shift pattern can be formed on the base plate B. Further, in the shift device according to the present embodiment, Is applied to a transmission of a self-propelled vehicle other than an automobile, such as a motorcycle, a train, a ship, and an airplane. It goes without saying that it belongs to the target range.

[0040]

As described above with reference to the embodiments,
In the shift device of the automatic transmission according to the present invention, a shift pattern having a concave and convex cam-shaped change portion necessary for a shift operation in both the automatic shift mode and the manual shift mode is skillfully formed on the base plate, and A shift structure is adopted in which a plunger slidable in an elastic state along the shift pattern is provided below the shift lever, so that the conventional shift device of a transmission capable of supporting both shift modes has a very complicated structure. The simplification can be greatly simplified, and the number of parts and the assembly cost can be significantly reduced. Moreover, the plunger can cooperate with the cam-shaped change portion of the shift pattern to achieve the inhibit function in the automatic shift mode and the detent function in the manual shift mode, and the plunger below the shift lever cooperates with the shift pattern. As a result, the shift lever is reliably guided along the shift pattern.

In the shift device according to the second aspect of the present invention, a convex resistance ridge is formed at a communicating portion that connects the automatic shift side shift pattern groove and the manual shift side shift pattern groove of the shift pattern. Therefore, resistance is provided so that the shift lever does not inadvertently move from one shift mode to the other shift mode, and the shift mode can be reliably switched by the shift lever.

In the shift device according to the third aspect of the present invention, the groove bottom of the manual transmission side shift pattern groove is formed at a position relatively higher than the groove bottom of the automatic transmission side shift pattern groove. Thus, the elastic pressure of the plunger in the manual shift mode can be increased.

In the shift device according to the fourth aspect of the present invention, since the coil spring is used as the elastic body for urging the plunger, the urging mechanism of the plunger with respect to the shift pattern is configured simply and reliably. be able to.

In the shift device according to the fifth aspect of the present invention, since an elastic body composed of a variable coil spring having a weak elastic portion and a strong elastic portion is used, the elastic pressure of the plunger below the shift lever is used. The operability of the shift lever can be improved by changing the force according to each shift mode.

In the shift device according to the present invention, an elastic body having at least two coil springs having different elasticities arranged in series is used.
As in the case of the elastic body described above, the operability of the shift lever can be improved by changing the elastic pressure of the plunger below the shift lever in accordance with each shift mode.

In the shift device according to the present invention, an elastic body in which at least two coil springs having different free lengths are arranged in parallel or concentrically is used. As in the case of the elastic body described in 6, the operability of the shift lever can be improved by changing the elastic pressure of the plunger below the shift lever in accordance with each shift mode.

In the shift device according to the present invention, since the inhibit release sleeve which can move up and down along the longitudinal direction of the shift lever is provided on the upper portion of the shift lever, the release sleeve is provided. By moving the shift lever up and down, the tip of the plunger below the shift lever crosses the step of the concave and convex cam-shaped change portion of the automatic shift side shift pattern groove, and the inhibit state of the shift lever in the automatic shift mode can be released.

Further, in the shift lock mechanism in the shift device according to the ninth and tenth aspects, an opening recessed in a base plate constituting the shift device is fitted into the opening so as to be able to float and sink. A shift lock mechanism that can be easily and reliably incorporated into the shift device, and is more compact and extremely superior in strength as compared with a conventional shift lock mechanism. Can be obtained. Therefore, the present invention has a number of effects as described above, and its industrial utility value is extremely large in various industries such as automobiles and motorcycles using the transmission.

[Brief description of the drawings]

FIG. 1 is an explanatory front view showing a cross section of a part of an internal structure of a shift device of an automatic transmission according to an embodiment of the present invention.

FIG. 2 is an explanatory side view showing a cross section of a part of the internal structure of the shift device of the embodiment.

FIG. 3 is a plan view of the shift device according to the embodiment.

FIG. 4 is an exploded perspective view of each component in the vicinity of a base plate of the shift device of the embodiment.

FIG. 5 is a partial perspective view of a base plate of the shift device according to the embodiment.

FIG. 6 is an enlarged sectional view taken along line XX of FIG. 5;

FIG. 7 is an enlarged sectional view taken along line YY in FIG. 5;

FIG. 8 is an enlarged cross-sectional view taken along line ZZ in FIG. 5;

FIG. 9 is an enlarged sectional view taken along line WW in FIG. 5;

FIG. 10 is a partial front explanatory view showing an internal structure in the vicinity of a plunger of the shift device of the present embodiment in an automatic transmission mode in cross section.

FIG. 11 is a partial front explanatory view showing, in cross section, an internal structure near a plunger of the shift device of the present embodiment in a manual shift mode.

FIG. 12 is a partial cross-sectional explanatory view showing an operation state of a plunger by an inhibit release sleeve of the shift device of the embodiment in an automatic transmission mode.

FIG. 13 is an explanatory front view showing a modified example of the elastic body of the shift device of the embodiment.

FIG. 14 is an explanatory front view showing another modification of the elastic body of the shift device of the embodiment.

FIG. 15 is an exploded perspective view of a shift lock mechanism according to the embodiment of the present invention.

FIG. 16 is an explanatory side view showing a locked state in the shift lock mechanism of the embodiment.

FIG. 17 is an explanatory side view showing the unlocked state of the shift lock mechanism of the embodiment.

[Explanation of symbols]

 B Base plate Bh Mounting port R Resistance ridge S Shift lever K Knob H Inhibit release sleeve Hf Flange BX X-axis bolt BX1 Shaft hole BY Y-axis bolt F Friction generating mechanism 1 Shift pattern 11 Automatic shift side shift pattern groove 11a Step 12 Manual Shift-side shift pattern groove 13 Communication part 2 Plunger 21 Tip 22 Hollow bar 3 Elastic body 31 Coil spring 31a Weak elastic part 31b Strong elastic part 32 Elastic coil spring 33 Elastic coil spring 34 Coil spring with long free length 35 Coil spring with short free length 4 Rod 41 Pull-up part 42 Connecting part 5 Lever body 51 Tube part 52 Cross joint part 52a X-axis bolt receiving part 52b Y-axis shaft hole 53 Projection 6 First swing plate 61 Shaft hole 62 Square hole 63 Square groove 7 Second swing plate 71 Shaft hole 72 Square hole 8 Side plate 81 Shaft hole 82 Groove 9 Connecting member 91 Collar 92 Washer 93 Nut 94 Nut 95 Wave washer 96 Friction plate L1 Opening L2 Locking member L21 Connecting portion L21a Slit L22 Inclined portion L23 Flange L3 Drive member L31 Solenoid coil L32 Connecting portion L32a Locking pin L4 Release member L41 Rod L42 Push button

Continuing on the front page (72) Inventor Kenichi Sato 10 Takane, Fujii-machi, Anjo-shi, Aichi Prefecture Inside Aisin AW Co., Ltd. (72) Inventor Hitto Takeshita 38 Ikenou-cho, Takefu-shi, Fukui Prefecture Aisin AW Within Industrial Co., Ltd. (72) Inventor Tamotsu Miyoshi 38 Ikenoue-machi, Takefu-shi, Fukui Prefecture Inside Aisin AW Industrial Co., Ltd. (72) Inventor Koji Kitamoto 38 Ikenou-cho, Takefu-shi, Fukui Prefecture Aisin AW Industrial In company

Claims (10)

[Claims] 1. A shift device for an automatic transmission having a shift position for an automatic shift mode and a shift position for a manual shift mode, wherein the shift device defines an automatic shift mode shift position of a shift lever S. A shift-side shift pattern groove 11, a manual-shift-side shift pattern groove 12 that defines a shift position for the manual shift mode of the shift lever S, and a groove that connects the automatic-shift-side shift pattern groove 11 and the manual-shift-side shift pattern groove 12. Communication part 13
And a base plate B having a concave and convex cam-shaped change portion formed at the bottom of each of the automatic and manual shift-side shift pattern grooves 11 and 12; and a base plate B disposed below the shift lever S. At the groove (11
An automatic transmission characterized by including a plunger 2 which slides in a repressing state with respect to 12.13) and which achieves a detent function and an inhibit function in cooperation with the change portion. Shift device. 2. The communication device according to claim 1, wherein a convex resistance ridge is formed in the communication portion, and the automatic transmission side shift pattern groove and the manual transmission side shift pattern groove are partitioned so as to be able to cross over. Shifting device for automatic transmission. 3. The manual transmission side shift pattern groove 12 has a groove bottom formed at a position relatively higher than the automatic transmission side shift pattern groove 11 groove bottom. 3. The shift device for an automatic transmission according to claim 1, wherein the resilient pressure is large. 4. The shift device for an automatic transmission according to claim 1, wherein the elastic body for urging the plunger is a coil spring. 5. The elastic body 3 is a variable-type coil spring 31 in which a weak elastic part 31a and a strong elastic part 31b are combined.
5. The shift device for an automatic transmission according to claim 4, wherein the main function mainly operates, and the ferroelastic portion 31b mainly functions during the manual shift mode and the shift mode switching. 6. The elastic body 3 has at least two elastic members different in elasticity.
.. And 33.33 are arranged in series, and the coil springs 32, 32, and 33.33 in the automatic shift mode.・ The coil springs 32 ・ 32 ・ ・ ・ ・ of which elasticity is weak act mainly, and all the coil springs 32 ・ 32 ・ ・ ・ ・ and 33 ・ 33 ・ ・ ・ ・ ・ during the manual shift mode and shift mode switching. The shift device of an automatic transmission according to claim 4, which operates. 7. The elastic body 3 comprises at least two coil springs 34, 34,..., 35, 35,... Having different free lengths arranged in parallel or concentrically. In the mode, the coil springs 34, 34 ... and 35.
Of the 35 ..., coil springs with a long free length 34, 34 ...
Mainly operates, and all the coil springs 34, 34,... And 35
The shift device for an automatic transmission according to claim 4, wherein: 8. An inhibit release sleeve H that can move up and down along the longitudinal direction of the shift lever S.
In the automatic shift mode, the sleeve H connected to the plunger 2 below the shift lever S via the rod 4 in the shift lever S in the automatic shift mode is moved up and down, thereby forming an automatic shift side shift pattern groove. The shift device for an automatic transmission according to any one of claims 1 to 7, wherein the end portion (21) of the plunger (2) can overcome the step (11a) of the uneven portion in the concave and convex cam shape to release the inhibit state. 9. A shift device for an automatic transmission in which an automatic shift side shift pattern groove 11 and a manual shift side shift pattern groove 12 are provided side by side, the base plate B constituting the shift device is recessed at a required position. An opening L1; which is fitted in the opening L1 so as to be able to move up and down so as to prevent the shift lever S from moving to a predetermined shift position when floating, and to lock the shift lever S, and at the bottom of the opening L1; A shift lock mechanism in a shift device of an automatic transmission, wherein a lock member L2 capable of releasing a locked state by sinking is provided. 10. The shift lock mechanism in a shift device of an automatic transmission according to claim 9, wherein the lock member L2 is formed in a block shape.