JP2826700B2 - Shift lever device for automatic transmission - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to the structure of a shift lever device for an automatic transmission mounted on a vehicle.

[0002]

2. Description of the Related Art A vehicle equipped with an automatic transmission (hereinafter referred to as AT)
Erroneous operation prevention technology is employed in such vehicles. A shift lock mechanism is known as one of the techniques.
The shift lock mechanism cannot shift from the parking range P unless the brake pedal is depressed at the time of starting, thereby preventing the brake pedal and the accelerator pedal from being depressed. This shift lock mechanism is provided with a solenoid operated by an electric signal,
The shift lock is released when the solenoid is excited. As a prior art relating to the shift lock release device, for example, Japanese Utility Model Publication No. 5-19228 is known.

FIG. 8 shows an example of a conventional shift lever device for an automatic transmission. In the drawing, reference numeral 1 denotes a shift lever, and reference numeral 3 denotes a detent pin movably attached to the shift lever 1. Detail pin 3
Is linked to the movement of a push button (not shown) located at the top of the shift lever 1. Detail pin 3
Are the positioning parts 4a, 4b of the tint plate 4.
And the like. A shift lock plate 5 is arranged near the detail plate 4.
The shift lock plate 5 is held by the detail plate 4 so as to be vertically movable. Shift lever 1
Is located in the parking range P, the detail pin 3 is engaged with the notch 5a of the shift lock plate 5.

In the vicinity of the shift lock plate 5, a swingable lock lever 6 is arranged. The upper end surface 6a of the lock lever 6 can be brought into contact with the lock end surface 5b of the shift lock plate 5. A solenoid (electromagnetic actuator) 7 is connected to the lock lever 6. When the solenoid 7 is not energized, the lock lever 6 swings toward the shift lock plate 5 by the spring force of the compression spring 8. At this time, the upper end surface 6a of the lock lever 6 and the locking end surface 5b of the shift lock plate 5 come into contact with each other, and the downward movement of the lock plate 5 is restricted. The shift lock state is set. In the vicinity of the shift lock plate 5, a position detection switch 9 for detecting a vertical displacement of the shift lock plate 5 is provided.

[0005] In the shift lever device for an automatic transmission configured as described above, the shift lever 1 is provided when the vehicle starts moving.
When the brake pedal is depressed in a state where is located in the parking range P, the solenoid 7 is excited and the lock lever 6 swings in a direction away from the shift lock plate 5 by the attraction force of the solenoid 7. Therefore, the shift lock plate 5 cannot contact the lock lever 6 and the movement of the shift lock plate 5
Will not be restrained. Therefore, the detent pin 3 engaging with the notch 5a of the shift lock plate 5
Can be depressed, and the engagement between the detent pin 3 and the positioning portion 4a is released, so that the shift lever 1 can be moved to another position.

[0006]

However, the conventional apparatus shown in FIG. 8 has the following problems. The shift lock plate 5 is mounted so as to be able to move up and down. However, when the shift lever 1 is not shifted to the parking range, the shift lock plate 5
Is stopped at each position by a certain resistance force. The resistance force is a sliding resistance force of the position detection switch 9 and a frictional force due to pressing of the lock lever 6 from the side. As described above, the shift lock plate 5 is assembled so as to be easily moved.

The shift lever device for an automatic transmission is assembled to the vehicle body with the shift lever 1 shifted to, for example, a neutral range N due to the connection relationship with the automatic transmission of the vehicle body. Therefore, when assembling the shift lever device for an automatic transmission to the vehicle body, the shift lock plate 5 may move upward due to an operator touching the shift lock plate 5 or an impact during the assembling work. is there. FIG. 9 shows a state where the shift lock plate 5 is displaced upward. In this state, since the lock lever 6 enters below the shift lock plate 5 by the spring force of the compression spring 8, the shift lock plate 5 cannot be pushed down, and the shift lever 1 is shifted to the parking range P side. Also, the shift operation cannot be performed due to the contact between the shift lock plate 5 and the detail pin 3. Therefore,
Conventionally, when assembling the shift lever device for an automatic transmission to the vehicle body, it is necessary to check the position of the shift lock plate 5 or correct the position, and the assembling work efficiency is extremely deteriorated. Was.

Japanese Patent Application Laid-Open No. Sho 61-143825 discloses a prior art relating to a technique for performing shift lock of a shift lever.
In order to prevent the shift lever from returning to the parking position, the movement of the bell crank is restrained by a spring. However, in this case, there is a problem that the spring expands and contracts by the shift operation of the shift lever, and the operating force of the shift lever increases.

The present invention provides a shift lever device for an automatic transmission that can prevent upward movement of a shift lock plate outside a specific non-traveling range without increasing the operating force of the shift lever. The purpose is to do.

[0010]

According to the present invention, there is provided a shift lever device for an automatic transmission, comprising: a shift lever; a detent pin provided on the shift lever so as to be vertically movable; A shift lock plate that engages with the detent pin only when the shift lever is shifted to a specific non-traveling range and moves up and down integrally with the detent pin, a coupling lever fixed to the shift lever, and the shift lever. A first stopper provided on the lock plate, and a first stopper provided on the connection lever;
When the shift lever is shifted to a specific non-traveling range, the shift lock does not contact the first stopper against upward movement of the shift lock, and the shift lever shifts to a range other than the specific non-traveling range. And a second stopper which comes into contact with the first stopper against upward movement of the shift lock plate.

[0011]

In the shift lever device for an automatic transmission according to the present invention, the connecting lever fixed to the shift lever has a second lever.
, The position of the second stopper is changed by the shift operation of the shift lever. When the shift lever is shifted to a specific non-traveling range, both stoppers have a positional relationship of being shifted,
When the shift lever is shifted out of the specific non-traveling range, the stoppers have a positional relationship in which they can abut each other. Therefore, the upward movement of the shift lock plate is allowed only when the shift lever is shifted to a specific non-traveling range, and when the shift lever is shifted to a range other than the specific non-traveling range, the first And the second stopper come into contact with each other,
The upward movement of the shift lock plate is prevented. Further, since a spring or the like for restricting the movement of the shift lock plate is not connected to the shift lever, the operating force of the shift lever does not increase.

[0012]

1 to 7 show an embodiment of the present invention. In FIG. 4, reference numeral 20 denotes a shift lever device for an automatic transmission, and reference numeral 21 denotes a base main body made of a thermoplastic resin. The base body 21 has a detent plate 22 having a detent groove 22a.
And a shift lever plate 23 having a detent groove 23a. The detail plate 22 and the shift lever plate 23 are covered by a housing 24. The housing 24 has an indicator 26 for displaying the shift position of the shift lever 25.
The lower end of the shift lever 25 is connected to a detent plate 22 and a shift lever plate 23 via a fulcrum shaft 27.
Is swingably connected to the lower part of the body.

A rod 30 extending in the axial direction is provided in the shift lever 25. The knob 25a located at the top of the shift lever 25 is provided with a push button 31 that can be moved in and out in the horizontal direction. One end of the push button 31 is
Abuts against an inclined surface of an inclination knob (not shown) provided at the upper end of the nosepiece. At the lower end of the rod 30, a detail rod part 30b is provided. Rod 3
0 and the detent rod portion 30b are connected by screwing. The detail rod portion 30b is urged upward by a compression spring. A connection lever 39 connected to the automatic transmission main body (not shown) of the vehicle is fixed to the shift lever 25.

A detent pin 32 is inserted through a detent rod portion 30b connected to the rod 30 so as to be freely inserted and removed. The detail pin 32 is arranged in a direction orthogonal to the axial direction of the rod 30. The detent plate 22 and the shift lever plate 23
It is formed on the base body 21. The detent plate 22 is formed with a detent groove 22a into which one of the detent pins 32 can be engaged. The shift lever plate 23 has a detent groove 23a with which the other of the detent pins 32 can be engaged. Each of the detent grooves 22a and 23a has a plurality of engaging steps for positioning the shift lever 25 at each position.

The detent grooves 22a formed in the detent plate 22 and the detent grooves 23a formed in the shift lever plate 23 are formed in the same shape, and the detent pins 32 are formed in the respective detent grooves. 22a and 23a are simultaneously engaged.

As shown in FIG. 1, a shift lock plate 33 is provided substantially at the center of the detent plate 22. The shift lock plate 33 is held by the detail plate 22 so as to be vertically movable. An engagement groove 33 is provided on the rear surface of the shift lock plate 33.
a is formed. The detent pin 32 engages with the engagement groove 33a of the shift lock plate 33 only when the shift lever 25 is shifted to the parking range P as a specific non-traveling range.

FIG. 5 is a sectional view taken along the line BB of FIG. 1, FIG. 6 is a sectional view taken along the line CC of FIG. 4, and FIG. 7 is a sectional view taken along the direction of arrow D in FIG. FIG. As shown in FIG. 5, a lock lever 34 is provided near the shift lock plate 33. The lock lever 34 is swingable about the support shaft 29, and the upper end surface 34 b is able to abut the lock end surface 33 c of the shift lock plate 33. A solenoid 35 as an electromagnetic actuator is connected to the lock lever 34 via a support shaft 29 and a link 45. The link 45 is a link for forcibly releasing the shift lock device. By pressing a lock release push button (not shown), the lower end of the push button comes into contact with the inclined surface 42a, and the link 45 is inclined toward the solenoid 35. I have. The main body 35a of the solenoid 35 is fixed to the detail plate 22 side. As shown in FIG. 6, the tip of the rod 35b of the solenoid 35 has
A link 35e connected to the link 45 is attached. A compression coil spring 36 as urging means for urging the lock lever 34 toward the shift lock plate 33 is disposed on the outer periphery of the rod 35b.

When the solenoid 35 is excited, for example, when the brake pedal is depressed, the rod 35b is attracted to the solenoid body 35a and the lock lever 34 swings in the direction away from the shift lock plate 33. When the solenoid 35 is not excited, the lock lever 34 is returned to the shift lock plate 33 by the spring force of the compression coil spring 36. A position detection switch 38 for detecting a vertical displacement of the shift lock plate 33 is attached to the base member 21. As shown in FIG.
The slide contact 38a of No. 8 is engaged with the U-shaped groove 33b of the shift lock plate 33 shown in FIG.

As shown in FIG. 7, a first stopper 46 protruding toward the connecting lever 39 is provided below the shift lock plate 33. Shift lock plate 3
Reference numeral 3 is made of a synthetic resin, and the shift lock plate 33 and the first stopper 46 are integrally formed. When the shift lever 25 is shifted to the parking range P as a specific non-traveling range, the connecting lever 39 does not contact the first stopper 46 against the upward movement of the shift lock plate 33, When the shift lever 25 is shifted to a range N, D, 2, or L other than the parking range P, the second stopper 48 that contacts the first stopper 46 against the upward movement of the shift lock plate 33 is moved. Is provided. Second stopper 48
Is provided at the lower end of the connecting lever 39. The stopper 48 is formed by bending the lower end of the connecting lever 39 made of a metal plate toward the shift lock plate 33.

In the state where the shift lever 25 is shifted to the parking position P, as shown in FIG. 2, the first stopper 46 and the second stopper 48 are moved in the vertical movement direction of the shift lock plate 33. They do not face each other. In a state where the shift lever 25 is shifted to a position other than the parking position P, that is, to the R, N, D, 2, and L ranges, the first stopper 46 and the stopper 48 of the body 2 are connected as shown in FIG. The shift lock plate 33 is opposed to the vertical movement direction. As shown in FIG. 1, when the shift lever 25 is shifted to a position other than the parking position P, even if the shift lock plate 33 is moved upward, the first stopper 46 and the second stopper 48 The contact prevents the shift lock plate 33 from moving upward.

Next, the operation of the shift lever device for an automatic transmission will be described. FIG. 2 shows a state where the shift lever 25 is shifted to the parking position P. FIG. 2A shows a state in which the push button 31 is released after the shift lever 25 is shifted to the parking range P. In this state, since the detent pin 32 is engaged with the engagement groove 33a of the shift lock plate 33, the detent pin 32 and the shift lock plate 33 are engaged.
Will be integrally located above. At this time, if the solenoid 35 is in the non-excited state, the upper end surface 34b of the lock lever 34 and the locking end surface 33c of the shift lock plate 33 can be in contact with each other as shown in FIG. When the upper end surface 34b and the lock end surface 33c are in contact with each other, the shift lock plate 33 is prevented from moving in the direction of arrow F, and a shift lock state in which the shift lever 25 cannot perform a shift operation is established. Before assembling the shift lever device 20 for the automatic transmission to the vehicle body 100, the lock lever 34 is moved by the operator to the shift lock plate 33.
Moved away from When the push button 31 of the shift lever 25 is pressed with the lock lever 34 sufficiently released from the shift lock plate 33, the shift lock plate 33 is pushed down.

FIG. 2B shows a state in which the shift lock plate 33 is slightly pressed down by pressing the push button 31. In this state, there is a gap S ₁ is formed between the end and the second stop 48 of the first stopper 46 in the shifting direction of the shift lever 25, it is possible to further depression of the shift lock plate 33. In a state where the shift lock plate 33 is completely pushed down to a predetermined position in the direction of arrow F by pressing the push button 31, the first stopper 46 is located below the second stopper 48, clearance S ₂ is present between the lower surface of the stopper 48 and the upper surface of the first stopper 46. That is, when the shift lever 25 is shifted to the parking range P, even if the shift lock plate 33 is moved up and down, the first stopper 46 and the second stopper 48 do not interfere at all.

When the shift lock plate 33 is completely pushed down in the direction of arrow F, the detent pin 32
And the detent grooves 22a and 23a are disengaged from each other, and the shift lever 25 can be shifted to another position. Here, as shown by the arrow E in FIG. 1A, the shift lever 25 is shifted to, for example, the R range.
In this state, the engagement between the detent pin 32 and the engagement groove 33a of the shift lock plate 33 is released. Therefore, even if the pressing of the push button 31 of the shift lever 25 is stopped and the detent pin 32 is raised, the shift lock plate 33 will maintain the state of having been lowered.

In the case of FIG. 1A, the shift lock plate 33 is in a state where it can easily move upward. However, since the shift lever 25 has been shifted to a position other than the parking range P, the first lock plate 33 is in the first position. The stopper 46 and the second stopper 48 have a positional relationship facing each other in the moving direction of the shift lock plate 33. When the shift lock plate 33 moves slightly upward, the first stopper 46
And the second stopper 48 abut. Therefore, the upward movement of the shift lock plate 33 is reliably prevented. Further, in the present embodiment, when the shift lock plate 33 is completely lowered, the first stopper 46 and the second stopper 48 are not in contact with each other, and the movement of the shift lock plate 33 is different from that of the related art. Is not used, the pulling force of the spring does not act on the shift lever 25, and there is no problem that the operating force of the shift lever 25 increases.

FIG. 1B shows a state in which the shift lever 25 is shifted to the N range (neutral range), and FIG. 1C shows a state in which the shift lever 25 is shifted to the L range. Is shown. (B) of FIG. 1,
Also in the case of (c), the first stopper 46 and the second stopper 48 have a positional relationship facing the moving direction of the shift lock plate 33, and the upward movement of the shift lock plate 33 is performed by the first stopper. 46 and the second stopper 4
8 is surely blocked. Therefore, the automatic transmission shift lever device 20 in a state where the shift lever 25 is shifted to a position other than the parking range P is moved to the vehicle body 100.
The shift lever device 20 for automatic transmission
Even when an impact force acts on each component of the shift lever device 20 for an automatic transmission due to contact between the first stopper 46 and the second stopper 48 due to contact with the other members of the vehicle body 100 or the like, An upward displacement of the shift lock lever 33 can be reliably prevented.

In this embodiment, the connecting lever 39 is made of a metal plate, and the connecting lever 39 is joined to the shift lever 25 by welding. However, the shift lever 25 and the connecting lever 39 are made of synthetic resin. Alternatively, a structure in which both are integrally formed may be used. Further, the electric actuator is not limited to the solenoid 35, and may be a configuration using a motor or the like.

[0027]

According to the present invention, the shift lock plate is provided with the first stopper, and the connecting lever fixed to the shift lever is provided with the shift lock plate when the shift lever is shifted to a specific non-travel range. When the shift lever is shifted to a position other than the specific non-traveling range, the first lock does not come into contact with the first stopper against the upward movement of the shift lock plate. Since the second stopper that comes into contact with the stopper is provided, the upward movement of the shift lock plate outside the specific non-traveling range can be prevented.
Therefore, when assembling the shift lever device for an automatic transmission to the vehicle body, it is not necessary to check the position of the shift lock plate or to correct the position, and the assembling work efficiency can be significantly improved. Further, since a spring for restraining the movement of the shift lock plate as in the conventional device is not used, the problem that the pulling force of the spring does not act on the shift lever and the shift operating force of the shift lever increases is also solved. be able to.

[Brief description of the drawings]

FIG. 1 is a perspective view of a main part of a shift lever device for an automatic transmission according to an embodiment of the present invention, showing a state where the shift lever is shifted to a position other than a parking position. .

FIG. 2 is a front view of a main part showing a state in which a shift lever in the apparatus of FIG. 1 is shifted to a parking position.

FIG. 3 is a perspective front view showing the entire apparatus of FIG. 1;

FIG. 4 is a sectional view taken along line AA of FIG. 3;

FIG. 5 is a sectional view taken along the line BB in FIG. 3;

FIG. 6 is a sectional view taken along line CC of FIG. 4;

FIG. 7 is a view as viewed in the direction of arrow D in FIG. 3;

FIG. 8 is a perspective front view of a main part of a conventional shift lever device for an automatic transmission.

FIG. 9 is a perspective view of a main part showing a shift state of a shift lock plate when the apparatus of FIG. 8 is assembled to a vehicle body.

[Explanation of symbols]

 Reference Signs List 20 shift lever device for automatic transmission 25 shift lever 32 detent pin 33 shift lock plate 39 connecting lever 46 first stopper 48 second stopper

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int. Cl. ⁶ , DB name) B60K 20/00-20/08 F16H 59/00-59/12

Claims (1)

(57) [Claims] 1. A shift lever; a detent pin provided on the shift lever so as to be vertically movable; and a detent pin engaged with the detent pin only when the shift lever is shifted to a specific non-traveling range. A shift lock plate that moves up and down integrally with the pin, a connection lever fixed to the shift lever, a first stopper provided on the shift lock plate, and a shift lever provided on the connection lever, wherein the shift lever has a specific shape. When the shift lock is shifted to the non-traveling range, the shift lock does not come into contact with the first stopper against the upward movement, and when the shift lever is shifted to a range other than the specific non-traveling range, the shift is performed. A second stopper that contacts the first stopper against upward movement of the lock plate. Shift lever device for an automatic transmission according to claim.