KR19980028685A - Shift lever of vehicle automatic transmission - Google Patents

Abstract

The present invention discloses a shift lever of an automatic transmission for a vehicle. According to the present invention, an upper lever 1 having a knob attached to an upper end, an upper end connected to a lower end of the upper lever 1, and a lower lever 2 fixed to a selection rod 4 connected to an automatic transmission at a lower end thereof is fixed. In a shift lever of an automatic transmission for a vehicle including a), a buffer lever 6 is interposed between the upper and lower levers 1 and 2 so that an upper end thereof is fixed to the upper lever 1, and the lower lever 2 A buffer chamber 21 having a narrow inlet in which a fluid 22 is enclosed is formed on an upper surface of the buffer chamber 21, and a lower end of the buffer lever 6 is inserted into the buffer chamber 21 so as to be movable, and at the bottom of the buffer chamber 21. It is characterized in that the flange 61 is formed integrally so as not to be separated through the inlet of the buffer chamber 21.

Description

Shift lever of vehicle automatic transmission

The present invention relates to a shift lever of an automatic transmission for a vehicle. More particularly, the present invention relates to a shift lever that allows a driver to arbitrarily select a range according to a current situation of a vehicle in an automatic transmission in which an automatic shift is performed.

In general, an automobile engine is designed to operate mainly in the elastic region of the engine, that is, from the rotational speed that generates the maximum rotational force in the engine performance curve to the rotational speed that produces the maximum output. It requires maximum traction or maximum output of the drive wheels when starting, accelerating and climbing. However, if the transmission ratio is less than 1, that is, when the output shaft rotation speed is the same as or higher than the engine rotation speed, the acceleration and climbing ability is greatly reduced. Therefore, a transmission is installed between the engine and the drive wheels so that the engine output and rotation speeds are applied to the drive wheels. We are converting to the required level. In other words, the transmission converts and transmits the torque and rotational speed of the engine, enables idle movement of the engine when the vehicle is stopped, and reverses by changing the rotation direction of the driving wheel.

Such transmissions can be classified into manual transmissions and automatic transmissions according to the transmission method. In the case of manual transmissions, the driver should shift the vehicle to the appropriate state for the load and the vehicle speed, whereas the automatic transmission has omitted the manual clutch operation mechanism. It is designed to allow the driver to control the driving speed of the vehicle by operating only the accelerator pedal.In addition to the advantages of being easy and comfortable to drive, there are many advantages such as not transmitting excessive force or shock to the engine or the driving device, There is a situation.

The automatic transmission as described above is generally configured to combine a fluid torque converter and a planetary gear device and to automatically shift according to driving conditions and engine load by using a hydraulic control device.

In addition, the automatic transmission is provided with a shift lever installed in the console box like the manual transmission. The shift lever of the manual transmission is used only to change the combination of the gears while driving according to the speed, to arbitrarily change the driver, or to reverse. On the other hand, the shift lever of the automatic transmission can select the parking (P), reverse (R), gear neutral (N), travel (D), and low speed (S, L) stage ranges.

That is, when the shift lever of the automatic transmission is located in the driving range, it is not necessary to operate the shift lever according to the speed change like the shift lever of the manual transmission. The driver has arbitrarily set a low speed range in which the gear arrangement becomes a low speed ratio.

In addition, a neutral range used for stopping for a while, a parking range used for parking, and a reverse range used for reversing are provided, respectively, and when the shifting lever is moved to the range position, the operating force is transmitted to the automatic transmission so that the hydraulic pressure flows. By this control, power transmission or interruption is made according to the selected range.

1 and 2 illustrate a shift lever of a conventional automatic transmission. 2 is an enlarged view of a connecting portion of the shift lever and the selection rod.

As shown, the shift lever is composed of an upper lever 1, a lower lever 2, and a knob 3, which is installed at an upper end of the upper lever 1 and is a part held by a driver. The lower lever 2 is not connected to the upper lever 1 in a straight line, but connected in a predetermined acute angle so that the upper and lower levers 1 and 2 rotate about the connection point. .

The lower end of the lower lever 2 is connected to the selection rod 4 which is connected to the automatic transmission 5 and transmits the operating force according to the selected range.

With the above configuration, when the driver grabs the knob 3 and changes the range, the upper lever 1 is rotated so that the lower lever 2 is also rotated relative to the connection point. Thus, the selection rod 4 is moved so that the operating force of the shift lever is transmitted to the automatic transmission 5.

However, the shift lever of the conventional automatic transmission is a driver holding the knob 3 because the vibration generated in the automatic transmission 5 is transmitted through the lower and upper levers 2 and 1 and the knob 3 is shaken. There is a problem that the uncomfortable feeling, and also the noise is transmitted to the room through the lower and upper levers (2, 1), the passenger feels unpleasant due to severe noise.

Accordingly, the present invention is devised to solve the problems caused by the shift lever of the conventional automatic transmission, and realizes a comfortable indoor environment by preventing vibration and noise generated from the automatic transmission from being transferred to the knob or entering the room. An object of the present invention is to provide a shift lever of an automatic transmission for a vehicle.

1 is a view showing a shift lever of a conventional automatic transmission.

2 is a view showing a connection structure between a conventional shift lever and a selection rod;

3 is a view showing a shift lever of an automatic transmission according to the present invention.

4 is a cross-sectional view taken along the line IV-IV of FIG.

-Explanation of symbols for the main parts of the drawing-

1-Upper lever 2-Lower lever

6-buffer lever 7-packing

8-Rubber 21-Shock absorber

22-Fluid 61-Flange

In order to achieve the above object, the present invention, a vehicle having a top lever is attached to the top of the knob, the top is connected to the lower end of the upper lever, the lower lever is fixed to the selection rod connected to the automatic transmission at the bottom In the shift lever of the automatic transmission,

A buffer lever is interposed between the upper and lower levers, and an upper end thereof is fixed to the upper lever, and a buffer chamber having a narrow inlet in which fluid is enclosed is formed on an upper surface of the lower lever. The bottom is movably inserted, and the bottom is characterized in that the flange is integrally formed so as not to be separated through the inlet of the buffer chamber.

According to the above-described configuration of the present invention, the lower lever is moved along the buffer lever by the formation of the shock absorber, and the damping effect of the motion is buffered by the fluid is exerted, so that the vibration transmitted from the automatic transmission to the shift lever and Noise can be prevented from penetrating the room.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

EXAMPLE

3 is a view showing a shift lever of the automatic transmission according to the present invention, Figure 4 is a cross-sectional view taken along the line IV-IV of FIG.

For reference, in the description of the configuration of the present embodiment, the same parts as in the prior art described at the beginning of the specification are omitted and repeated descriptions are mainly described in order to avoid duplication of description. use.

As shown in FIG. 3, a buffer lever 6 is interposed between the upper and lower levers 1, 2. That is, the upper end of the shock absorbing lever 6 is fixed to make a predetermined acute angle to the upper lever 1, the lower end is connected so that the lower lever 2 is moved, the internal structure along the line IV-IV of FIG. 4 is a cross-sectional view taken.

As shown, a buffer chamber 21 having a predetermined size is formed on the upper surface of the lower lever 2, and the upper inlet has a shape that is smaller in width than the inside. In addition, the fluid 22 exhibiting the damping effect is enclosed in the shock absorbing chamber 21. The lower end of the shock absorbing lever 6 is movably inserted into the shock absorbing chamber 21, and a flange 61 is formed at the bottom of the shock absorbing lever 6 to prevent the shock absorbing lever 6 from being separated from the shock absorbing chamber 21. That is, the diameter of the flange 61 is formed in a shape relatively longer than the diameter of the upper inlet of the buffer chamber 21. In addition, the lower end of the shock absorbing lever 6 has a diameter shorter than the diameter of the rest of the upper part so as to have a diameter enough to be inserted and moved through the inlet of the shock absorbing chamber 21.

In addition, a packing 70 is fitted to the outer circumference of the flange 61 to prevent the fluid compressed by the flange 61 from leaking on the inner wall of the buffer chamber 21, and through the inlet of the buffer chamber 21. A rubber 8 is inserted into the inlet of the shock absorbing chamber 21 to prevent the outer circumference of the shock absorbing lever 6 inserted and moved in contact with the inner wall of the inlet.

Hereinafter, the operation of this embodiment configured as described above will be described in detail.

Holding the knob and rotating the upper lever 1, the shock absorbing lever 6 is also rotated, so that the lower lever 2 is rotated to move the selection rod 4, so that the operating force of the shift lever is transmitted to the automatic transmission. do.

At this time, the vibration and noise generated from the automatic transmission are transmitted to the lower lever 2 through the selection rod 4, and the lower lever 2 is connected to enter and retract into the shock absorbing lever 6. So up and down movement. Therefore, when the lower lever 2 is raised, the fluid 22 is compressed by the flange 61 to alleviate the lifting operation of the lower lever 2 to absorb vibration and noise. The lower lever 2 stops rising when the fluid 22 is no longer pressurized by the flange 61, and this time, after the lowering is reversed, the lower lever 2 periodically repeats the raising and lowering operation. Transmission of vibration and noise to the upper lever 1 is suppressed.

On the other hand, the compressed fluid 22 is prevented from leaking into the shock absorbing chamber 21 on the upper part of the flange 61 by the packing 7 fitted on the outer circumference of the flange 61, and also inserted into the inlet of the shock absorbing chamber 21. The rubber lever 8 causes the shock absorbing lever 6 not to be worn, but to move shanghai.

According to the present invention as described above, the noise and vibration generated in the automatic transmission is prevented by the buffer lever 6 interposed between the upper and lower levers (1, 2), it is transmitted to the upper lever (1) By being suppressed as much as possible, the driver's hand holding the knob is shaken to feel unpleasant or to prevent noise from penetrating the pleasant indoor environment.

On the other hand, the present invention is not limited to the above-described specific preferred embodiments, and various changes can be made by those skilled in the art without departing from the gist of the invention claimed in the claims. will be.

Claims (3)

In a shift lever of an automatic transmission for a vehicle including a top lever having a knob attached to the top, and a top of which is connected to a bottom of the top lever, and a bottom lever of which a selection rod connected to an automatic transmission is fixed to a bottom thereof. A buffer lever is interposed between the upper and lower levers, and an upper end thereof is fixed to the upper lever, and a buffer chamber having a narrow inlet in which fluid is enclosed is formed on an upper surface of the lower lever. The shift lever of the automatic transmission for a vehicle, characterized in that the lower end is movably inserted, and the bottom is integrally formed with a flange so as not to be separated through the inlet of the buffer chamber. The shift lever of an automatic transmission for a vehicle according to claim 1, wherein a packing is inserted in an outer circumference of the flange to prevent fluid from leaking. The shift lever of an automatic transmission for a vehicle according to claim 1 or 2, wherein a rubber is inserted at an inlet of the shock absorber to prevent abrasion of the shock absorber.