JP2584270Y2 - Shift lock 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 a shift lock device for an automatic transmission in which a shift operation cannot be performed unless a brake pedal is depressed during a shift operation from a parking position to a traveling position.

[0002]

2. Description of the Related Art In general, in a shift lever device of an automatic transmission, by shifting a shift lever body back and forth, each position of traveling including parking and retreating from a neutral position where power is cut off can be changed. Each is obtained. In this case, it is well known that a shift lock device in which the shift operation cannot be performed unless the brake petal is depressed is performed so that an unexpected situation does not occur when shifting from the parking position to the traveling position. is there.

FIG. 4 shows a specific example thereof. That is, the shift lever body 101 that can be shifted as shown by the arrow is
A position pin 109 that moves up and down by pressing a pressing portion 107 provided on the operation knob 105 is provided. One end of the position pin 109 is connected to a position plate 111.
In the positioning groove 113. Position pin 1
As indicated by the chain line in FIG. 5, when shifting from the parking position P to the reverse R, the neutral N, and the travel D, the shift operation cannot be performed as indicated by an arrow unless it is once pushed down from the regulating portion 115. From where you are
A vertically movable shift lock plate 117 that engages only at the parking position P is provided on the position pin 109.
Are detachably engaged.

[0004] The shift lock plate 117 is a plate stopper 12 that is controlled to operate by a solenoid 119.
When the brake pedal (not shown) is depressed, the solenoid 119 operates and the plate stopper 121 moves backward (dashed line), thereby causing the shift lock plate 117 to move up and down as shown in FIG. It is a structure that enables.

As described above, if the shift lever body 101 does not depress the brake pedal, the position pin 10
9 cannot move downward.

[0006]

[Problems to be solved by the invention] However,
Shift lock plate 117, plate stopper 12
1, solenoid 119 and shift lock plate 11
Because a guide part to guide 7 up and down is required,
The structure becomes complicated and the assembling work becomes troublesome. Moreover, the shift lock plate 117 is arranged on the side of the position plate 111, and thus has a large shape, resulting in an increase in size. In addition, when the pressing portion 107 is pressed, the position pin 109 moves up and down together with the shift lock plate 117, so that the position pin 109 is very heavy and has a surface that impairs the operation feeling.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a shift lock device for an automatic transmission which can be reduced in size with a simple structure and does not impair the operation feeling.

[0008]

In order to achieve the above object, the present invention is directed to a base member having a recess formed therein, and a shifter mounted in the recess of the base member and capable of shifting from a non-running position to each position. A lever main body, an operation knob provided at an upper end of the shift lever main body and having a pressing portion, an operating rod linked to the pressing portion and moving up and down in the shift lever main body, and a positioning groove having an upper edge of the groove at a position position A position plate attached to the base member, and one end side extending outwardly from a vertically long guide hole formed in the operation rod and formed in the shift lever main body, and faces one of the positioning grooves of the position plate. A shift pin device for an automatic transmission, comprising: a position pin; and a cantilever supported on the concave portion of the base member. At the same time, when the brake pedal is not depressed, the shift lever moves to a position below the non-traveling position of the shift lever body and restricts the downward movement of the position pin facing the non-traveling position. A position pin restricting member is provided which can be switched to a standby position where the position pin is retracted from a lower position of the position pin, while the position pin is in a position where the downward movement of the position pin facing the non-travel position is restrained by the base member. A receiving member that supports the free end side of the regulating member is provided on the concave portion of the base member.

[0009]

According to the shift lock device, when the brake pedal is depressed, the position pin regulating member switches from the restrained position to the standby position, and the restraint of the position pin is released. As a result, the shift operation of the shift lever main body becomes possible, and the operation feeling is not spoiled because the position pin moves up and down independently.

On the other hand, when the position pin regulating member is in the restraining position, the position pin is restrained from moving downward by the position pin regulating member, so that the shift operation becomes impossible. At this time, in order to receive the impact load of the position pin acting on the free end side of the position pin restricting member together with the receiving member, it is not necessary to increase the thickness of the cantilevered position pin restricting member or provide a reinforcing member. Even so, reliable support rigidity can be obtained. In addition, since the root of the position pin is supported, deformation of the position pin can be suppressed.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below in detail with reference to FIGS.

Reference numeral 1 denotes a shift lever main body of the shift lever device 3, and the shift lever main body 1 protrudes upward from a guide groove 8 formed on a top plate 7 of the indicator main body 5. Shift lever body 1 protruding upward from top plate 7
An operation knob 9 is provided at the upper end of the. Further, as shown in FIG. 1, the main shaft 11 on the lower end side is rotatably mounted and supported by a lever shaft 15 supported at both ends on the bottom side of the concave portion of the base member 13 formed in the concave portion. Therefore, the shift lever body 1 can shift in the front-back (arrow) direction with the lever shaft 15 as a fulcrum.

A drive arm 17 extending downward from the opening of the base member 13 is fixed to the main shaft 11 mounted on the lever shaft 15, and the drive arm 17 is connected to an automatic transmission (not shown) via a rod. (Not shown).

On the other hand, a position pin 21 projecting to both sides is provided in the shift lever main body 1, and the position pin 21 is attached to an operation rod 25 operatively linked to a pressing portion 23 provided on the operation knob 9. Supported.

The pressing portion 23 is vertically movably assembled to the upper end opening of the operation knob 9, and the upper end of the operating rod 25 is in contact with the inside.

The position pin 21 is, as shown in FIG. 1, a rod holding member 2 provided at the lower end of the operating rod 25.
7, both ends project outside through vertical guide holes 29, 29 formed in the peripheral wall surface of the shift lever body 1, and one end faces into a positioning groove 33 of the position plate 31. The other end faces close to the upper side of the position pin regulating member 35.

The rod holding member 27 is urged upward by an urging spring 37 provided at the bottom. Thereby, the operating rod 25 arranged along the internal space of the shift lever main body 1 is urged upward and presses the pressing portion 23 with a finger against the spring pressure of the urging spring 37. (FIG. 3), a downward movement of the operating rod 25 can be obtained.

The position plate 31 is a base member 13
3 and the upper edge of the positioning groove 33 is
From the left side, the positions are parking P, reverse R, neutral N, and traveling D, and the leading end has a cantilevered shape with the end omitted.

On the other hand, the position pin restricting member 35 is disposed in a region above the concave portion on the opposite side of the position plate 31 via the shift lever main body 1 and has a sufficient mounting space, and has a cantilever shape. It has become. The free end of the position pin regulating member 35 is a tapered surface 38 that rises toward the tip. The base end 39 of the position pin regulating member 35 is rotatably attached to the attachment portion 41 of the base member 13 via attachment bolts 43. Also, a protruding portion 45 extended from the base end portion 39.
Is engaged with a solenoid pin 49 whose operation is controlled by a solenoid 47. When the solenoid 47 is turned on, the solenoid pin 49 is retracted, and when it is turned off, a protruding / retracting operation (arrow in FIG. 1) is obtained. Thus, the position pin restricting member 35 is supported by the receiving member 51 at the time of the parking position P of the shift lever main body 1 and is located at a position lower than the root of the position pin 21 (the chain line a in FIG. 1). It is possible to switch to the retracted standby position (solid line b in FIG. 1).

When the main key switch 53 is turned on, the current from the battery 55 flows through the contact point S of the brake pedal 57 provided in series, so that the solenoid pin 47 pulls in the solenoid pin 49 and regulates the position pin. The member 35 is moved to the restraint position a.
Further, when the brake petal 57 is depressed, the contact point S is opened, and the solenoid 47 is turned off so that the position pin regulating member 35 is moved to the standby position b.

The upper surface of the receiving member 51 is a horizontal supporting surface for supporting the position pin regulating member 35,
It protrudes from the mounting portion 41 of the base member 13 along the shift trajectory of the shift lever body 1 which is on the concave portion.

The position of the receiving member 51 is set so as to face below the position pin 21 when the shift lever main body 1 is at the parking position P, and the position pin regulating member 3 is provided.
5 is supported from below.

Next, the operation will be described. The solenoid pin 49 is retracted by the solenoid 47 which is turned on when the key switch 53 is turned on when the shift lever main body 1 is in the parking position P, and the position pin regulating member 35 is restrained. Move to position a. At this time, if the pressing portion 23 is pressed F as shown by an arrow without depressing the brake petal 57, the position pin 21 comes into contact with the position pin restricting member 35, and the downward movement is restricted.

When the position pin 21 abuts, the taper surface 38 of the position pin regulating member 35 causes the position pin 21 to receive a supporting action toward the mounting portion 39 at the root portion, so that the position pin 21 does not come off from the tip. Restriction is ensured and deformation is suppressed. Also,
The load from the position pin 21 is received by the support surface of the receiving member 51. Even if the position pin restricting member 35 is cantilevered, the supporting pin can be made thicker or have sufficient supporting rigidity without using a reinforcing member. Will be secured.

On the other hand, after turning on the key switch 53,
When the brake pedal 57 is depressed, the contact S is separated and the solenoid 47 is turned off. As a result, the solenoid pin 49 protrudes and moves the position pin regulating member 35 to the restricted position a.
To the standby position b. As a result, the position pin 21 can be lowered without impairing the operation feeling, and the shift operation of the shift lever main body 1 to the traveling position D becomes possible.

The position switching during traveling is different from the case where the position pin 21 is switched from the parking position D to another position even when the position pin regulating member 35 is at the restraint position a, and the amount of vertical movement is small. Since the shift operation can be performed without interfering with the pin regulating member 35, no trouble occurs in running.

In this embodiment, a shift lever device capable of performing a shift operation in the front-rear direction has been described.
It is also possible to apply the present invention to a shift lever device that combines the front-rear direction and the left-right direction.

[0028]

[Effects of the Invention] As described above, according to the present invention, the position pins can be moved up and down independently, so that the operation feeling is not impaired and the number of parts can be reduced. Can be Further, since the impact load of the position pin acting on the free end side of the position pin restricting member is received together with the receiving member, the position pin restricting member having a cantilever structure can be made thicker or provided with no reinforcing member. Reliable support rigidity is obtained. In addition, since the root portion of the position pin is supported, the position pin can be shortened and deformation can be suppressed.

[Brief description of the drawings]

FIG. 1 is a schematic perspective view of a shift lock device according to the present invention.

FIG. 2 is a schematic plan view of a shift lock device embodying the present invention.

FIG. 3 is a side view of the shift lock device embodying the present invention.

FIG. 4 is a schematic explanatory view of a shift lock device showing a conventional example.

FIG. 5 is an explanatory view of a positioning groove.

[Explanation of symbols]

 1 shift lever body 9 operation knob 13 base member 21 position pin 23 pressing part 25 operating rod 29 guide hole 31 position plate 33 positioning groove 35 position pin restricting member 51 receiving member 57 brake petal a restraining position b standby position P parking position

──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Satoshi Kobayashi Nissan Motor Co., Ltd. (2) Takaracho, Kanagawa-ku, Yokohama, Kanagawa Prefecture (72) Inventor Yoshihiro Kawahara 2 Takaracho, Kanagawa-ku, Yokohama, Kanagawa Nissan Motor Co., Ltd. In-company (56) References JP-A-4-34264 (JP, A) JP-A-1-197130 (JP, A) (58) Fields investigated (Int. Cl. ⁶ , DB name) B60K 20/00- 20/08 F16H 59/02-59/12

Claims (1)

(57) [Scope of request for utility model registration] 1. A base member having a concave portion, a shift lever main body mounted in the concave portion of the base member and capable of shifting from a non-travel position to each position, and a pressing portion provided at an upper end portion of the shift lever main body. An operating knob having an operating knob having a positioning groove having an upper edge of a groove at a position, the operating plate being linked to the pressing portion and moving up and down in the shift lever main body, and having a position plate attached to the base member. A position pin provided on a rod, one end of which extends outward from a vertically long guide hole formed in the shift lever body and faces a positioning groove of the position plate; anda shift lever device for an automatic transmission, comprising: It is supported in a cantilever shape on the concave portion of the base member, and when the brake pedal is not depressed, the shift -Moved to the lower position of the non-travel position of the main body, the restraining position that restricts the downward movement of the position pin facing the non-travel position, and the standby position that retreats from the lower position of the position pin when the brake pedal is depressed. A receiving member for supporting a free end side of the position pin regulating member at a position where the downward movement of the position pin facing the non-travel position is restrained on the base member, while a switchable position pin regulating member is provided. Is provided on a concave portion of the base member.