JPS5819608Y2 - Vibration prevention device for push buttons in automatic transmission operating lever devices - Google Patents

Description

[Detailed explanation of the invention] This invention is inserted into the knob at the head of the operating lever in an automatic transmission installed in a vehicle, and the push movement pushes down the position switching rod passed through the center of the lever. The push button prevents vibration noise generated while the vehicle is running,
The purpose is also to improve the operability of pressing.

As shown in Fig. 1, in an automatic transmission, an operating lever 4 made of a pipe is fixed to the upper part of a tube shaft 3 which is freely rotatably fitted to a shaft 2 which is fixed and supported by a bracket 1, and is fixed by protruding from the lower part. An operating lever device is provided for connecting the arm 5 with the crank arm of the transmission gear shaft.

The above-mentioned bracket 1 is attached to the floor of a vehicle and has an operating lever 4 protruding above the floor.A rod 8 that is pushed up by a spring 1 is provided at the center of the bracket 1. A pin 9 stuck to the lower end of the operating lever 4 is configured to project outward from the long hole 6 of the operating lever 4 so as to come into contact with a cam 10 for maintaining the gear shift position from below.
A knob 11 fitted and fixed to the head of the operating lever 40 is provided with a blind hole 12 with an open mortar, and a push button 14 pushed out by the elasticity of a spring 130 is installed in the blind hole 12.
A head piece 17 fixed to the upper end of the rod 8 is passed through a through hole 15 which is vertically installed in the hole 15 and has a suppressing surface 16 formed on the outer lower part thereof, and an inclined cam 18 formed on the head piece 1T is inserted into the pushing column surface. In principle, the push button 1 is in contact engagement with the push button 1.
4, a vertical circular guide rod 19 is provided near the opening of the blind hole 12, as shown in FIG. In some cases, a sliding hole 20 is provided through which the guide rod 19 passes, but in either case, the push button 14 inserted into the blind hole 12 must be manufactured and assembled with high precision so as not to create a fitting gap. It is difficult.

For this reason, the push button 14 vibrates within the blind hole 12 while the vehicle is running, producing unpleasant vibration noise.

In order to prevent the generation of such vibration noise, the present invention is designed to prevent the vibration noise from occurring at one corner of the through hole 15 in the device shown in FIGS. A slope a is formed at one corner of the hole edge that is pressed against the piece 17 or the circular guide rod 19, and in FIG. , 4th
In the figure, the slope a is pressed against the point b of the circular guide rod 19.

Therefore, the push button 14 slightly turns in the direction of the arrow in the blind hole 12 by the action of the spring 130, and the end angle C of the tip on the side where the slope a is formed
A point is brought into elastic contact with the inside of one of the blind holes 12, and a side surface opposite to the slope a of the push button 14 is brought into elastic contact with a point d inside the open end of the blind hole 12.

Therefore, even if the vehicle body vibrates as the vehicle runs, there is no risk that the push button 14 will vibrate within the blind hole 12 of the knob 11 and generate vibration noise, and the push button 14 can also be pressed smoothly. .

[Brief explanation of drawings]

The accompanying drawings show an embodiment of the present invention, and FIG. 1 is a side sectional view;
2 is a plan view taken along the line A--A in FIG. 1, FIG. 3 is a side sectional view of a portion of another embodiment, and FIG. 4 is a plan view taken along the line B--B in FIG. 4... Operating lever, 7... Spring, 8... Rod,
11... Rough, 12... Blind hole, 13... Spring, 14
...Push button, 15...Through hole, 16...Press surface,
17... Head piece, 18... Inclined cam, 19... Guide rod, 20... Sliding hole.

Claims (1)

[Scope of utility model registration request] A blind hole 12 with an open end is formed in the knob 11 attached to the head of the operating lever 40, and a push button 14 on which a spring 13 acting in the extrusion direction is applied is inserted into the blind hole. A through hole 15 through which the inclined cam 18 is brought into contact with the pressing surface 16 through a head piece 11 fixed to a rod that is installed in the center of the operating lever 4 and is pushed up by a spring, or through the through hole 15 and the blind hole 12. In an automatic transmission operating lever device having a sliding hole 20 through which a guide rod 19 is inserted, the elasticity of the spring 13 of the through hole 15 or the sliding hole 20 causes the edge of the hole in contact with the head piece 17 or the guide rod 19 to A vibration prevention device for a push button, characterized in that a slope a is formed at one corner of the head piece 1T and around the guide rod 19 to be pressed by the elastic force of the spring 13.