JP4163309B2 - Impact force absorbing structure of vehicle speed change operation device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a vehicle speed change operation device, and more particularly to an impact force absorbing structure of a device provided with a device main body and a shift lever protruding from the device main body.
[0002]
[Prior art]
Conventionally, as this kind of impact force absorbing structure, the apparatus main body is provided swingably on the body frame, and the swinging of the apparatus body is restrained by a stick provided between the apparatus main body and the body frame, A structure is known in which, when an impact force of a predetermined value or more is applied to the speed change operation device, the shift rod is divided to swing the speed change operation device (see Japanese Patent Application Laid-Open No. 10-16597). .
[0003]
[Problems to be solved by the invention]
Ideally, this type of impact force absorbing structure initially has a function capable of reliably absorbing a high impact force acting on the speed change operation device and a function capable of slowly damaging the impact force thereafter. It is. However, even if the conventional structure has the function of the former stage, it does not have the function of the latter stage.
[0004]
[Means for Solving the Problems]
An object of the present invention is to provide an ideal impact force absorbing structure having the two functions.
[0005]
In order to achieve the above object, according to the present invention, an impact force absorbing structure for a vehicle speed change operation device, comprising: a device main body supported by a vehicle body via a steel plate support member; and a shift lever protruding from the device main body. downward at the ends of the vehicle front side of the apparatus main body, the first support portion provided at the front end portion of the support member via the first support shaft is provided swingably, a rear end portion of the support member Are formed integrally in a cantilevered manner, and a second support portion is constituted by the rear end portion and the hanging portion, and the first support shaft is provided at an end portion of the apparatus main body on the vehicle rear side. in order to hold the second support shaft parallel to the second supporting portion, wherein the shaft insertion hole located on the rear end portion is inserted through the second support shaft, the apparatus main body by the impact force acting on the shift operating device The second support portion to reveal the oscillation about the first support shaft. It is a width narrower than the diameter of the shaft insertion hole communicating to 且 one second support shaft, the arcuate groove that is destroyed by the swinging of the second support shaft caused by the impact force, the first An impact force absorbing structure for a vehicle speed change operation device is provided which is provided in an arc shape centering on one support shaft and extending over the rear end portion and the hanging portion .
[0006]
In the above configuration, when an impact force of a predetermined value or more is applied to the speed change operation device, the second support shaft is forced to bite into the arc-shaped groove from the shaft insertion hole, thereby reliably absorbing the initial high impact force. it can. Thereafter, the second support shaft swings around the first support shaft together with the main body of the apparatus and continuously breaks the arc-shaped groove, so that the impact force can be attenuated slowly.
[0007]
DETAILED DESCRIPTION OF THE INVENTION
In this section, “front, rear, left, right” means that the forward direction of the vehicle is “front”.
[0008]
1 and 2, a vehicle body 1 of a passenger car as a vehicle includes a steel pipe front cross member 2, a steel plate bracket 3 attached to the front cross member 2, and a speed change operation device attached to the bracket 3. Steel plate support member 4. The bracket 3 has a pair of left and right plate-shaped attachment portions 5 that are inclined downward from the front side to the rear side, while the support member 4 is on both attachment portions 5 and is fixed to the attachment portions 5. 6 has a pair of left and right plate-like attachment portions 7 to which the front and rear end portions are attached. Each stopper 6 includes a bolt 6a and a floating rubber 6b. A plate-like rising portion 8 is connected to the inner edges of both mounting portions 7, and between the upper edges of the compatible rising portion 8, the front end to the substantially central portion are connected by a plate-like connecting portion 9. Rear portions 10 each protruding rearward from the rear ends of the mounting portion 7 of both uplink portion 8, the upper end side of each of the rear end thereof the rear end portion 10 and two mounting portions 7 downwardly extending portion 11 is continuously provided, i.e. droop The portion 11 extends downward from the rear end portion 10 and is supported by the rear end portion 10 in a cantilever manner .
[0009]
The speed change operation device 12 includes a device main body 13 and a shift lever 14 protruding from the device main body 13. The apparatus main body 13 includes a rectangular box-shaped portion 15, a front-up channel-shaped portion 16 that is provided on the front upper portion of the box-shaped portion 15 and protrudes forward, and a rear upper portion of the box-shaped portion 15 that is provided rearward. And a protruding lever support 17.
[0010]
The shift lever 14 includes a lever main body 18 and an operation knob 19 attached to the upper end thereof. The lever body 18 has a rod portion 20 having a crank shape, and a spherical body 21 existing at the lower end of the lever body 18 is fitted into a holding portion 22 having a hemispherical concave surface of the lever support portion 17 in the apparatus body 13, and the lid body 23 The retaining portion 22 is held out.
[0011]
The base end of the shift arm 24 is fixed to the lower straight portion of the rod portion 20, and the shift arm 24 extends forward from the rod portion 20. In the lever support portion 17, a pair of left and right bearing portions 25 are provided on the front side of the holding portion 22, and an intermediate cylinder portion 27 of the select arm 26 is attached to the bearing portion 25 via a support shaft 28. The select arm 26 can swing around the support shaft 28 in the front-rear direction. The rear end annular portion 29 of the select arm 26 has an axis extending in the left-right direction, and the rear end annular portion 29 has a spherical distal end portion 31 of a connecting shaft 30 fixed to the spherical body 21 via a spherical bush 32. Mated. Operation wires (not shown) are connected to the spherical tip portions 33 and 34 of the shift arm 24 and the select arm 26, respectively.
[0012]
In the channel-shaped portion 16 of the apparatus main body 13, the front end side of both side plate portions 35 is inserted into and held by the shaft insertion holes 36 and 37 existing on the front end side of the compatible ascending portion 8 in the support member 4. It is attached through a shaft 38 so as to be swingable. Therefore, the front end side of the compatible ascending portion 8 constitutes a first support portion A in the vehicle body 1 for swingably providing the vehicle front side of the apparatus main body 13.
[0013]
In the lever support portion 17 of the apparatus main body 13, a shaft insertion hole 39 that extends through the rear end portion in the left-right direction is formed at the rear end portion. A second support shaft 40 parallel to the first support shaft 38 is inserted into the shaft insertion hole 39, and both end portions of the second support shaft 40 are connected to the rear end portion 10 of the compatible ascending portion 8 in the support member 4. Are respectively inserted and held in the shaft insertion holes 41. Arc-shaped grooves 42 communicating with the shaft insertion holes 41 and narrower than the diameter of the second support shaft 40 are formed in the left and right rear end portions 10 and the hanging portions 11 connected thereto, respectively. Each arcuate groove 42 is centered on a first support shaft 38. Therefore, the rear end portion 10 and the both hanging portions 11 that hold the second support shaft 40 and have the arc-shaped grooves 42 constitute the second support portion B of the vehicle body 1.
[0014]
In the above configuration, when the shift lever 14 is moved in the left-right direction, the select arm 26 swings back and forth around the support shaft 28, and when the shift lever 14 is moved in the front-rear direction, the shift arm 24 similarly moves. . As a result, a speed change operation can be performed.
[0015]
In FIG. 3, when an impact force F of a predetermined value or more is applied to the speed change operation device 12, for example, the shift lever 14, the second support shaft 40 is forced from the shaft insertion hole 41 to the arc-shaped groove 42 as indicated by a one-dot chain line. As a result, the initial high impact force F can be reliably absorbed. Thereafter, as shown by the two-dot chain line, the second support shaft 40 swings about the first support shaft 38 together with the apparatus main body 13 and continuously breaks the arc-shaped groove 42. It can be attenuated slowly.
[0016]
【The invention's effect】
According to the present invention, when an impact force of a predetermined value or more is applied to the speed change operation device, the second support shaft is forced to bite into the arc-shaped groove from the shaft insertion hole, thereby reliably absorbing the initial high impact force. After that, the impact force can be gradually attenuated by the second support shaft swinging around the first support shaft together with the apparatus main body and breaking the arc-shaped groove continuously. Therefore, the impact force of an ideal vehicle speed change operation device having a function capable of reliably absorbing a high impact force acting on the shift lever at the beginning and a function capable of slowly damping the impact force thereafter. An absorbent structure can be provided.
[Brief description of the drawings]
FIG. 1 is a perspective view of a speed change operation device provided with an impact force absorbing structure.
FIG. 2 is an exploded perspective view of a speed change operation device provided with an impact force absorbing structure.
FIG. 3 is an operation explanatory diagram.
[Explanation of symbols]
1 body
4 Support members
10 rear end part
11 hanging portion 12 speed change operation device 13 device main body 14 shift lever 38 first support shaft 40 second support shaft 41 shaft insertion hole 42 arc-shaped groove A first support portion B second support portion F impact force

Claims (1)

A vehicle speed change operation device (12) comprising a device main body (13) supported by a vehicle body (1) via a steel plate support member (4) and a shift lever (14) protruding from the device main body (13). ) Impact force absorbing structure
The ends of the vehicle front side of the apparatus main body (13), swingable via the first support shaft to the first support portion (A) provided at the front end portion of the support member (4) (38) ,
A downward hanging portion (11) is integrally formed in a cantilever manner on the rear end portion (10) of the support member (4), and the second support portion is formed by the rear end portion (10) and the hanging portion (11). (B)
In order to hold the device body the adjacent an end of the vehicle rear side (13) first support shaft (38) and the second support axis parallel (40) to said second support portion (B), wherein Inserting the second support shaft (40) through the shaft insertion hole (41) in the rear end portion (10) ;
In order to cause the device body (13) to swing around the first support shaft (38) by the impact force (F) acting on the speed change operation device (12), the second support portion (B the), oscillation of the shaft insertion hole (a width narrower than the diameter of one 且 communicating with 41) the second support shaft (40), said second support shaft caused by the impact force (40) The arcuate groove (42) destroyed by the above is provided in an arcuate shape with the first support shaft (38) as the center and extending over the rear end portion (10) and the hanging portion (11). An impact force absorbing structure for a vehicle speed change operation device.

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