JPH0454361Y2 - - Google Patents

Description

[Detailed explanation of the idea] [Industrial application field]

The present invention relates to a shift lever device for an automatic transmission, and more particularly to an improvement in a shift lever device for an automatic transmission that prevents overshifting when operating the shift lever.

[Conventional technology]

The shift positions of automatic transmissions are P (parking), R (reverse), N (neutral), D (drive), 2 (2nd speed driving), and L (1st speed driving).
This shift position is selected based on the rotation angle of the shift lever with respect to the vehicle body.
The rotation angle of the shift lever is regulated by a daytent plate that is attached to the vehicle body and has positioning parts for parking, reverse, etc.; It is a detent pin that can be engaged with the positioning part. Generally, the detent pin is located at the lower end of the detent rod within the shift lever. or,
The day tent rod is provided inside the shift lever and is biased upward by a spring, and only when the driver presses a push button provided at the upper end of the shift lever, it moves downward against the spring. It is now possible to move. You can select the shift position of an automatic transmission from reverse to neutral, from neutral to drive, from drive to neutral, from drive to 2nd gear, and from 2nd gear to drive by pressing the shift lever without pressing the pushbutton. It has a structure that allows shifting only by rotation. To prevent malfunctions, other shifts can only be performed when the driver presses the push button and rotates the shift lever. That is, for shifts other than those mentioned above, the driver operates the push button to push down the detent rod, rotates the shift lever with the detent pin separated from the positioning part of the detent plate, and then moves to the other positioning part of the detent plate. This is done by re-engaging the detent pin to either one of the detent pins.

[Problem that the invention attempts to solve]

However, in such a conventional shift lever device, when the detent rod is pushed down and the detent pin is separated from each positioning part, the shift lever can be rotated arbitrarily. There has been a problem in that the driver sometimes has to pull back the shift lever that has been overshifted, making the operation that much more complicated. As a countermeasure to this problem, it has been proposed that, for example, the amount by which the day tent rod should be pushed down is different when moving to the positioning part for reverse and when moving to the positioning part for parking (Utility Model No. 57- 29921). However, even with this proposal, the selection of the amount to be pressed depended on the driver's sense of force, so if the amount of depression is large, it will still pass through the positioning part for reverse and go directly to parking. There was a problem in that there was a risk of being shifted (overshifted) to the positioning part of. In addition, a technique has been proposed that prevents overshifting when shifting from neutral to reverse by devising the uneven shape of the detent plate and regulating the amount by which the detent rod is pressed by the push button. (For example, Utility Model Publication No. 61-42615, No. 61-78324). However, all of these techniques focus only on specific types of overshifts, and therefore the types of overshifts that can be prevented are extremely limited. There was a problem in that it was difficult to prevent this from occurring. In addition, since it was designed to prevent overshifts in connection with the pushbutton operation, it is possible to ensure that the shift to the reverse side occurs without operating the pushbutton, such as from drive range to neutral, regardless of the state of the pushbutton. It was impossible to prevent overshifting.

[Purpose of invention]

The present invention was developed in view of such conventional problems, and in addition to the conventional shift regulation using a detent plate and detent pin,
To provide a shift lever device for an automatic transmission that can reliably, that is, structurally prevent many types of overshifts, by newly regulating shifts using an anti-shift knob and a second detent pin. The purpose is to

[Means to solve the problem]

The present invention includes a detent plate that is fixed to the vehicle body and has a positioning portion for parking, reverse, neutral, etc., and a detent plate that is rotatably supported by the vehicle body and that determines the shift position of an automatic transmission. a shift lever that can be selected depending on its position relative to the shift lever; a detent rod that is biased upwardly within the shift lever and can be depressed by a push button; In the shift lever device for an automatic transmission, the shift lever device for an automatic transmission includes a detent pin that can be engaged with each positioning portion of the detent plate by pressing down the detent rod and rotating the shift lever. a second detent pin that is fitted into the detent rod and is slidable within a specific range of the detent rod; and a second detent pin that is attached to the vehicle body and that is rotated by the shift lever when the detent rod is pressed down. prevents the second detent pin from moving on an arc centered on the shift lever fulcrum, and allows the second detent pin to move upward due to the upward restoring movement of the detent rod;
Despite the depression of the date rod,
The above object is achieved by including an anti-shift knob having an end shape that prevents the second detent pin from moving downward when the second detent pin slides in the specific range. This has been achieved.

[Function and effect of the idea]

In the present invention, by only the combination of the conventional detent plate and detent pin,
In view of the difficulty in effectively preventing various overshifts, the detent rod is provided with a second detent pin, and an anti-shift knob is newly provided to restrict the movement of the second detent pin. As a result, the rotation of the shift lever can now be reliably prevented from overshifting of many types of shift levers, compared to the conventional regulation using only detent plates and detent pins. It also becomes possible to prevent erroneous shifts. For example, in a D→N shift, the shift in the R direction may be prevented regardless of the state of the push button. Further, by varying the position of the anti-shift knob, the number of anti-shift knobs installed, or the shape of the contact surface of the anti-shift knob with the second detent pin, many types of overshifts can be easily realized. That is, when the shift lever is rotated while the detent rod is pressed down, the second detent pin is prevented from further rotation by the anti-shift knob. Therefore, overshifting can be easily prevented by simply installing the anti-shift knob at the position of the shift range in which overshifting is to be prevented. Furthermore, when the push button is released while the shift lever is prevented from rotating, the detent rod returns upward, but the anti-shift knob has an end shape that allows the second detent pin to move upward at this time. And, even if the push button is pressed again and the detent rod is pushed down, the second detent pin will not move downward due to the anti-shift knob (because it slides upward relative to the detent rod). . Therefore, once overshifting has been prevented, rotation of the shift lever can be resumed simply by pressing the push button again. Therefore, the installation position and number of anti-shift knobs determine the range position of the overshift to be prevented, and the shape of the end of the anti-shift knob determines the direction of the overshift to be prevented. Become.

【Example】

Embodiments of the present invention will be described in detail below with reference to the drawings. As shown in FIGS. 1 to 3, this embodiment is fixed to the vehicle body, and has parking (P), reverse (R), neutral (N), drive (D),
A detent plate 10 in which positioning parts K _P , K _R , K _N , K _D , K ₂ , K _L for 2-range running (2) and L-range running (L) are formed in order, and a vehicle body. Rotatably supported, automatic transmission parking, reverse, neutral, drive, 2
a shift lever 14 that allows the shift position for range driving and L range driving to be selected by the position relative to the detent plate 10; a shift lever 14 provided within the shift lever 14 and biased upward by a spring 16; and a detent rod 20 that can be freely depressed by the driver via a push button 18, provided at the lower end of the detent rod 20,
By pressing down the detent rod 20 and rotating the shift lever 14 by the driver, the positioning portions K _R , K _P , K _N , K _D ,
A shift lever device for an automatic transmission including a detent pin 22 capable of engaging with K ₂ and K _L , further comprising: a detent pin 22 that is loosely fitted to the detent rod and slidable in a specific range of the detent rod 22; a movable second detent pin 24; and an anti-shift knob 26 that is attached to the vehicle body side and restricts movement of the second detent pin 24.
It is equipped with The detent rod 20 has a slope 28 at its upper end that engages with the push button 18, and a detent pin 22 at its lower end that engages with the positioning portion of the detent plate 10. The second detent pin 24 is loosely fitted and placed on the detent rod 20 on a flange 28 formed on the detent rod 20. This second
The detent pin 24 is always urged downward by a spring 30. That is, this spring 30 is connected to the second stopper 34 which is fixed to the detent rod 20 by the E-rings 32, 32.
It is installed between the detent pin 24,
Always move the second detent pin 24 downward (flange 2
8 side). A long hole 14C along the longitudinal direction of the shift lever 14 is formed in the pipe portion 14B of the shift lever 14, which allows the second detent pin 24 to move up and down, and allows the second detent pin 24 to move up and down. The detent rod 20 is supported so as not to rotate in the horizontal direction. Further, the end of the second detent pin 24 on the anti-shift knob 26 side has an upper side 24A cut off. On the other hand, the anti-shift knob 26 is housed in a case 36 that is welded to the upper part of the detent plate 10 and between the positioning part _KR for reverse and the positioning part _KN for neutral. . This anti-shift knob 26 is always biased in the direction of arrow A by a spring 38 and a cover body 40 screwed into the case 36, and the second shift knob It is designed to be able to move forward and backward relative to the tent pin 24. Second detent pin 2 of anti-shift knob 26
The end portion on the fourth side is as shown in FIG. That is, the second detent pin 24 side of the anti-shift knob 26 has a horizontally cut upper surface portion 26A.
Then, the center lower part of this upper surface part 26A is connected to the stopper part 2.
In order to remain as 6B and 26C, slope portions 26D and 26E are provided, the lower ends of which are cut off on both sides. The width of this lower center portion is determined in consideration of the distance between the positioning portions K _N and K _R of the N range and the R range. As a result of the above configuration, the basic operations of the second detent pin 24 and anti-shift knob 26 are as follows. That is, when a downward force is applied to the second detent pin 24, the second detent pin 24 stops at the collar 28 of the detent rod 20, and thereafter moves in the same manner as the detent rod 20. Also, the second
When an upward force is applied to the detent pin 24, movement independent of the detent rod 20 is allowed along the central axis of the detent rod 20. When no external force is applied to the second detent pin 24, the second detent pin 24 is pressed against the upper part of the flange 28 of the detent rod 20 by the biasing force of the spring 30. On the other hand, the operation of the anti-shift knob 26 is as follows. That is, the upper surface 2 of the anti-shift knob 26
When a downward force acts on 6A, it opposes that force. Also, the stopper portion 2 of the anti-shift knob 26
When a rightward or leftward force acts on 6B and 26C, it opposes that force. However, when an upward force acts on the sloped portions 26D and 26E of the anti-shift knob 26, the anti-shift knob 26 is pushed into the case 36 by the horizontal component force generated on the sloped portions 26D and 26E, and the force is reduced. When it ceases to act, it returns to its original position due to the biasing force of the spring 38. As a result of these operations, the actual operation of the shift lever device is as follows. (1) When shifting from P to R: First, when the push button 18 is pressed, the detent rod 20 moves downward, and both the detent pin 22 and the second detent pin 24 are pushed down (FIG. 4 A1). When the shift lever is rotated in the reverse direction in this state, the second detent pin 24 is moved against the stopper portion 26 of the anti-shift knob 26.
Since it hits B, it cannot rotate any further,
Overshift can be prevented (Fig. 4 A2). Therefore, the P→R shift can be performed in the same manner as in the past, by rotating the shift lever 14 while pressing the push button 10.
Moreover, there is no need to worry about overshifting. In addition,
When the pushbutton 18 is released in this state, the second detent pin 24 can rise while retracting the anti-shift knob 26 into the case 36.
The anti-shift knob 26 can be located at the upper part of the upper surface 26A (FIG. 4 A3). (2) To shift from P to D: After performing the operation in (1) (after reaching the A3 position in Figure 4), continue as is (or press push button 18).
), shift in the drive direction.
As a result, the detent pin 22 slides in the drive direction along the guide on the top surface of the detent plate 10 (or along the guide on the bottom surface of the detent plate 10), while the second detent pin 24 slides along the guide on the top surface of the anti-shift knob 26. can be shifted to the drive position (A3→A6 in FIG. 4, or A4→A5→A6 in the same figure). As a result, when shifting from P to D, as in the past, when the push button 18 is pushed in and the shift lever 14 is rotated, the rotation is first stopped at the R position. Regardless of whether the push button 18 is pressed or not, the shift lever 14 can be rotated in the D direction again, and the shift can be completed. (3) When shifting from D to N: When the shift lever 14 is moved in the N direction without pressing the pushbutton 18 (Fig. 5 A7→A)
8), As in the past, attach the detent pin 2 to the neutral positioning part _KN of the detent plate 10.
2 is engaged, overshifting in the R direction is prevented. Also, press button 1 from D range.
When the shift lever 14 is rotated in the N direction while pressing 8 (see Fig. 5, A7→A10→A1
1) Since the second detent pin 24 contacts the stopper portion 26C of the anti-shift knob 26, overshifting in the R direction can be prevented. As a result, when shifting from the D range to the N range, overshifting toward the R position is reliably prevented regardless of whether the push button 18 is pressed or not. (4) When shifting from D to R: When moving from the D range position to the N range position with pushbutton 18 pressed (A7→A10→A11), press pushbutton 1 once.
8, the second detent pin 24 moves to the upper surface 26A of the anti-shift knob 26, so push the push button 18 again and rotate the shift lever 14 in the R direction (A12, A13).
By releasing the push button 18, the shift from D to R is completed (A14). (5) When shifting from R→N, N→D, D→2, 2→D: It is possible to shift as is without pressing the shift button 18, just as in the conventional case. As described above, according to this embodiment, in particular, P→
Since there is no risk of overshifting to the N range when shifting to R, the operation from parking to reverse can be performed reliably. Further, when shifting from D to N, there is no possibility of overshifting to the R range under any circumstances. FIG. 6 shows a second embodiment of the present invention. This second embodiment differs from the first embodiment only in the shape of the end of the anti-shift knob 56 on the second detent pin 24 side. That is, this anti-shift knob 56 has an upper surface portion 56A similar to that of the previous embodiment,
It includes a stopper part 56C, a slope part 56E, and a slope part 56D for allowing the second detent pin to move from the left side to the right side in the figure and from the lower side to the upper side. As a result, as shown in Fig. 7, in the case of the frequently used shift from P to D, the push button
This can be executed by rotating the shift lever to position D while pressing 8 (A15).
→A16). However, D→N or 2→
In the case of N shift, overshifting to the R position is prevented regardless of the state of the push button 18, just as in the previous embodiment. Also, D →
The shift of P can be performed in exactly the same manner as in the previous embodiment. FIG. 8 shows a third embodiment of the present invention. The third embodiment also differs from the first embodiment only in the shape of the end of the anti-shift knob on the second detent pin 24 side. That is, the anti-shift knob 66 according to the third embodiment includes an upper surface portion 66A, a stopper portion 66B, and a slope portion 66C similar to those in the first embodiment, and also includes a second shift knob 66 from the right side to the left side and from the bottom side to the top side in the figure. It is provided with a sloped portion 66D that allows the detent pin 24 to pass therethrough. As a result, contrary to the second embodiment, D→R,
Or press button 18 for D→P shift
You can shift in exactly the same way as before by pressing and rotating the shift lever, and in the case of P → R, rotation is stopped at the R range position, so the N
Reliably R without overshifting to range
Can shift up to the range. Also, P
When shifting from the range to the D, 2, and L ranges beyond the R range position, the second detent pin 24 can be positioned on the upper surface portion 66A by once releasing the push button 18 at the R range position. Therefore, the shift lever 14 can thereafter be rotated to a predetermined range position regardless of the state of the push button 18. This point is similar to the first embodiment described above. In the above embodiments, only one anti-shift knob is provided between the N range and the R range, but the present invention is not limited to this. For example, the anti-shift knob at this position Alternatively, or in addition, an anti-shift knob may be provided between the parking range and the reverse range, for example. This results in
When shifting from the P range side to beyond the R range, or when shifting from the N range side to beyond the R range, the shift lever can be made to function to stop once.

[Brief explanation of drawings]

Fig. 1 is a vertical cross-sectional view of a shift lever showing an embodiment of the present invention, Fig. 2 is a side view of the detent plate and its vicinity of the above-mentioned embodiment device, and Fig. 3 is a portion showing the end shape of the anti-shift knob. The perspective view, FIGS. 4 and 5 are diagrams for explaining the movement of the detent pin and the second detent pin, and FIG. 6 is equivalent to FIG. 3 showing the second embodiment of the present invention. FIG. 7 is a diagram for explaining the movement of the detent pin and the second detent pin in the second embodiment, and FIG. 8 is a third diagram showing the third embodiment of the present invention. It is a partial perspective view corresponding to the figure. 10...Day tent plate, 12...Main body,
14...Shift lever, 14A...Shift lever fulcrum, 16...Spring, 18...Push button, 20...Detent rod, 22...Detent pin, 24...Second detent pin, 26
...Anti-shift knob.

Claims (1)

[Claims for Utility Model Registration] A detent plate that is fixed to the vehicle body and has a positioning part for parking, reverse, neutral, etc.; a shift lever that can be selected depending on its position relative to the detent plate; a detent rod that is biased upwardly within the shift lever and can be depressed by a push button; and a lower end of the detent rod. A shift lever device for an automatic transmission, comprising: a detent pin that is provided in the detent pin and can be engaged with each positioning portion of the detent plate by pressing down the detent rod and rotating the shift lever, a second detent pin that is loosely fitted to the detent rod and is slidable within a specific range of the detent rod; The second detent pin is prevented from moving on an arc centered on the shift lever fulcrum, and the second detent pin is allowed to move upward due to the upward restoring movement of the detent rod, and the second detent pin is prevented from moving on an arc centered on the shift lever fulcrum. Nevertheless, the anti-shift knob has an end shaped to prevent the second detent pin from moving downward when the second detent pin slides in the specific range. Shift lever device for automatic transmission.