JPH0593955U - Automatic transmission shift lever device - Google Patents

Abstract

(57) [Abstract] [Purpose] To provide a shift lever device for an automatic transmission equipped with an operating rod that contributes to weight reduction while maintaining sufficient buckling strength. [Structure] A hollow shift lever main body 3 for selecting and operating a shift range, a shift lever operation range restriction mechanism 50 located below the shift lever main body 3, and an operating portion (pressing member) 12 of the shift lever operation range restriction mechanism 50. An operating knob 10 provided at the upper end of the shift lever main body 3 and an operating rod 4 that transmits the operation of the operating portion 12 to the shift lever operating range restriction mechanism 50 by moving up and down in the shift lever main body 3. In a shift lever device of an automatic transmission provided, a buckling prevention rib, in which the operating rod 4 is made of a resin molded product, and which protrudes toward an inner peripheral wall of the shift lever body 3 at an appropriate position in the longitudinal direction of the operating rod 4. 44 is provided.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a shift lever device for a floor shift type automatic transmission.

[0002]

[Prior Art]

 Generally, a shift lever device for an automatic transmission of this type is equipped with a double-structured shift lever, and an operating rod is vertically movably housed inside an outer hollow shift lever body. The shift lever main body is for selectively operating the shift range, is provided so as to be movable back and forth, and a mechanism for restricting the operating range of the shift lever is provided under the shift lever body. By operating an operating portion provided on an operating knob at the upper end of the shift lever main body, the shift lever operating range regulating mechanism is operated via the operating rod.

As components of the shift lever operation range regulating mechanism, a guide hole (not shown) formed in the peripheral wall of the shift lever main body, a position pin that moves up and down along the guide hole, and this position pin are provided. A position plate (a detent plate) having a groove for engaging and disengaging is provided, and the position pin is fitted and fixed in a hole formed in a lower end portion of the operation rod.

As shown in FIG. 6, in a conventional operating rod 100, a main body 101 thereof is composed of a metal rod body, and a resin action portion is provided at an upper end (operation of the operating portion is converted into vertical movement of the operating rod). The portion 102 having a slope) has a structure formed by molding. Then, the position pin 103 was fitted and fixed in a circular hole 105 formed in the boss portion 104 at the lower end of the main body portion 101.

[0005]

[Problems to be solved by the device]

 By the way, along with the demand for weight reduction of vehicles, there is an increasing demand for weight reduction of shift lever devices.

Therefore, it is conceivable to switch the main body of the operating rod from metal to resin. However, if the body of the operating rod is made of resin, it will buckle under a compressive load, and that portion will slide on the inner wall of the shift lever body, and the operating rod may be shaved due to the unevenness of the inner wall, resulting in reduced strength. There is. Therefore, it is conceivable to increase the inner diameter of the shift lever main body to increase the clearance between the shift lever main body and the outer circumference of the operating rod, but in this case, the cost becomes high.

Therefore, an object of the present invention is to provide a shift lever device for an automatic transmission that includes an operating rod that contributes to weight reduction while maintaining sufficient buckling strength.

[0008]

[Means for Solving the Problems]

 The present invention has been made in consideration of the above circumstances, and includes a hollow shift lever main body for selectively operating a shift range, a shift lever operation range restricting mechanism located below the shift lever main body, and the shift The operation knob provided with the operation portion of the lever operation range regulation mechanism is provided at the upper end of the shift lever body, and the operation of the operation portion is controlled by moving the shift lever body up and down. A shift lever device for an automatic transmission, comprising: an actuation rod formed of a resin molded product; and an inner peripheral wall of the shift lever body at an appropriate position in the longitudinal direction of the actuation rod. It is characterized by the provision of a buckling prevention rib that protrudes toward.

[0009]

[Action]

 In the shift lever device having the above structure, since the operating rod is made of a resin molded product, the weight is correspondingly reduced. Moreover, since the buckling prevention ribs are provided at appropriate positions in the longitudinal direction, it is possible to secure the necessary buckling strength while reducing the overall volume or weight.

[0010]

Embodiment An embodiment of the present invention will be described below with reference to the drawings.

2 to 4 show a shift lever device S of an automatic transmission according to an embodiment of the present invention, and FIG. 1 shows a structure of an operating rod used in the device.

2 to 4, reference numeral 1 is a shift lever that is tiltable in the front-rear direction of the vehicle, and reference numeral 2 is a base plate fixed to the floor panel of the vehicle body. The shift lever 1 has a hollow shift lever main body 3 and an operating rod 4 which is inserted into the shift lever main body 3 so as to be movable upward and downward.

The lower end of the shift lever body 3 is fixed to a horizontal pipe-shaped main shaft 5, and the main shaft 5 is rotatably attached to the outer periphery of a horizontal lever shaft 6 supported at both ends by the base plate 2. It is installed.

A box-shaped indicator body 7 is attached to the upper part of the base plate 2, and the shift lever 1 projects upward from a guide groove 9 formed in a top plate 8 of the shift lever 1. An operation knob 10 is attached to the upper end of the shift lever body 3 protruding upward from the top plate 8. On the side surface of the operation knob 10, a pressing member (operation portion) 12 that can be moved obliquely downward against the spring 11 is provided. The inner end of the pressing member 12 is in contact with the upper end of the operating rod 4 arranged inside the shift lever body 3.

The operating rod 4 is composed of a rod-shaped main body 41 having a cross-shaped cross section, an action portion 42 at its upper end, and a boss portion 43 at its lower end, as shown in FIG. The whole is integrally molded with resin.

A disc-shaped buckling prevention rib 44 protruding toward the inner peripheral wall of the shift lever main body 3 is formed on the main body 41 having a cruciform cross section at appropriate intervals in the longitudinal direction thereof. ing. The outer periphery of the disc-shaped buckling prevention rib 44 slides smoothly on the inner peripheral wall of the shift lever body 3.

Further, the action portion 42 provided at the upper end of the operating rod 4 has an inclined surface against which the inner end of the pressing member 12 abuts, and the pressing operation of the pressing member 12 is converted into the vertical movement of the operating rod 4. Fulfill the function of The operating rod 4 is biased upward by a spring 13 housed in the lower portion of the shift lever body 3, and by pressing the pressing member 12 of the operation knob 10, the operating rod 4 moves downward against the spring 13. It is about to move.

Further, the boss portion 43 provided at the lower end of the operating rod 4 is configured as a columnar body, and has a long hole 45 penetrating in the diameter direction. The long hole 45 is a flat hole which is long in the vertical direction, and a position pin 46 formed in the same shape as the hole 45 is fitted and fixed therein. One end of the position pin 46 projects outward from a guide hole 47 formed in the peripheral wall of the shift lever main body 3 and engages with and disengages from the groove 48a of the position plate 48 in accordance with the movement of the operating rod 4. The operation range of the shift lever 1 is restricted and the restriction is released. Here, the position pin 46, the guide hole 47, and the position plate 48 constitute a shift lever operation range restriction mechanism 50.

The other end of the position pin 46 projects toward a park lock device with a key interlock (hereinafter referred to as “park lock device”) 51. As shown in FIG. 2, the park lock device 51 includes a key lock member 15, a shift lock member 17, and a key cylinder control member 19, and is integrally assembled to a mounting member 21 mounted on the base plate 2. And is formed as a unit. The other end of the position pin 46 engages with the engagement surface 15a formed inside the key lock member 15 when the shift lever body 3 is in the parking position P. Further, the shift lock member 17 is controlled by driving the solenoid 21 into two positions, that is, a position where the stopper surface 17a is moved within the movement locus of the position pin 46 and a position where it is retracted from the movement locus. Further, one end of a key cylinder control member 19 is connected to the shift lock member 17, and the movement of the shift lock member 17 to the above two positions is controlled by the position of a key in a key cylinder (not shown). Is becoming.

In addition, the shift lever device is equipped with a mechanism for electrically detecting the shift position selected by the tilted position of the shift lever 1.

Next, the operation will be described.

In this shift lever device, the shift position is detected according to the tilted position of the shift lever 1 as in the conventional case, and the controller shifts the manual shift valve according to the detection signal.

When switching the operation range of the shift lever 1, the pressing member 12 of the operation knob 10 is pressed. Then, the actuating rod 4 descends against the spring 13 in accordance with the movement of the member 12, the position pin 46 is disengaged from the groove 48a of the position plate 48, and the shift lever 1 can be moved without restriction in this state. become. At this time, a buckling load is applied to the operating rod 4. Further, when the pressing member 12 is pushed while the position pin 46 is in contact with the stopper surface 17a of the shift lock member 17, a large buckling load is applied to the operating rod 4.

In this case, since the actuation rod 4 of this embodiment has the buckling prevention ribs 44, it has sufficient buckling strength even though it is made of resin, and there is no risk of buckling. Further, since the entire operating rod 4 is made of a resin integrally molded product, it is lightweight and easy to manufacture, and it greatly contributes to cost reduction.

Further, in the above-mentioned configuration, since the flat end of the position pin 46 is connected to the long hole 45 formed in the boss portion 43 of the operating rod 4, the area of the contact surface between the two increases. , The contact pressure becomes small. For this reason, the weakness in the bonding strength due to the boss portion 43 being made of resin is alleviated, problems such as rattling due to the generation of indentations during fitting are less likely to occur, and sufficient durability is maintained. .. Further, since the long hole and the flat body are combined, the circumferential positioning can be easily performed only by matching the shapes of the both. Moreover, the position in the circumferential direction can be regulated and rattling can be prevented.

In the above-described embodiment, the case where the disk-shaped rib 44 is provided as the buckling prevention rib of the operating rod 4 is shown. However, as shown in FIG. It is also possible to form the height of the four protrusions 41a constituting the V-shaped main body 41 to be partly high (dimension H) so that the parts function as buckling prevention ribs 44a having a large section modulus. In that case, it is desirable to gently change the height of the protrusion 41a as shown in the figure.

[0027]

[Effect of the device]

 As described above, according to the present invention, since the operating rod is made of resin and the rib for preventing buckling is provided, the shift lever device provided with the operating rod having a sufficient buckling strength and a light weight is provided. Can be realized, and the overall weight can be reduced.

[Brief description of drawings]

FIG. 1 is a perspective view of an operating rod used in a shift lever device of an automatic transmission according to an embodiment of the present invention.

FIG. 2 is a perspective view showing an overall configuration of a shift lever device of the same embodiment.

FIG. 3 is a side view showing the shift lever device of the embodiment.

FIG. 4 is a sectional view taken along line IV-IV in FIG. 3 showing the entire configuration of the shift lever device according to the embodiment.

FIG. 5 is a perspective view showing another embodiment of the operating rod.

FIG. 6 is a perspective view of a conventional operating rod.

[Explanation of symbols]

 1 Shift Lever 3 Shift Lever Main Body 4 Actuating Rod 10 Operating Knob 12 Pushing Member (Operating Part) 41 Main Body 42 Working Part 43 Boss 44, 44a Buckling Prevention Rib 50 Shift Lever Operation Range Restriction Mechanism

Claims (1)

[Scope of utility model registration request] 1. A shift lever having a hollow shift lever main body for selecting and operating a shift range, a shift lever operating range regulating mechanism located at a lower portion of the shift lever main body, and an operating portion of the shift lever operating range regulating mechanism. A shift of an automatic transmission including an operation knob provided at an upper end of a lever main body, and an operating rod that transmits an operation of the operation unit to the shift lever operation range restriction mechanism by moving up and down in the shift lever main body. In the lever device, the operating rod is formed of a resin molded product, and buckling prevention ribs protruding toward the inner peripheral wall of the shift lever body are provided at appropriate positions in the longitudinal direction of the operating rod. Automatic transmission shift lever device.