KR19980068102U - Select lever device of automatic transmission vehicle - Google Patents

Abstract

The present invention is applied to an automatic transmission vehicle in a select lever device that selects driving conditions such as high speed forward and low speed forward or reverse, so that the selector lever for guiding the lifting rod for positioning the select lever assembly at each select position can be effectively performed. The present invention relates to a detent plate (20) having a plurality of select positions formed at an upper end thereof, a hollow shaft (42) rotating relative to the detent plate (20), and a lifting and lowering of the hollow shaft (42). In constructing a select lever device for an automatic transmission vehicle having a lifting rod 44 inserted and moving along a select position, the hollow shaft 42 is press-fitted to a lower end to allow the lifting rod 44 to move up and down. A select lever device for an automatic transmission vehicle including a bush 100 is provided. This invention is to improve the assembly and workability as well as to have the effect of preventing the radial flow of the lifting rod after assembly.

Description

Select lever device of automatic transmission vehicle

The present invention relates to a select lever device for an automatic transmission vehicle. More particularly, the select lever assembly is selected in a select lever device that is applied to an automatic transmission vehicle and selects driving conditions such as high speed forward and low speed forward or reverse. The present invention relates to an improvement of a select lever device for effectively guiding a lifting rod positioned at a position.

As is well known, an automobile uses an internal combustion engine that burns fuel in an engine and converts thermal energy generated therein into kinetic energy, and is used as a means of transporting and moving cargo.

Such automobiles include a transmission for appropriately controlling the driving force of the engine and transmitting it to the axle (drive wheel). Since the gearbox does not have sufficient maneuvering power during the initial driving of the engine, it reduces the rotational force of the engine during the initial driving to increase the driving torque, or converts or increases the reduction ratio when the speed is increased so that it can be properly operated according to the driving condition of the vehicle. do. Many types of such transmissions have been developed, for example, manual transmissions and automatic transmissions. The electronic manual transmission requires a skilled driving technique because it is difficult for the driver to select a gear ratio according to each driving condition. On the other hand, the latter automatic transmission is properly controlled by the planetary gear assembly by the electronic control signal of the computer receives the detection signal from the various sensors for detecting the vehicle's running speed and load conditions, and various valves that are opened and closed in accordance with the signal. It has the disadvantage of complicated structure, low output efficiency, and high price compared to manual transmission, but it is easy to operate because it does not need to perform separate operation for shifting while driving. Recently, the range of use is expanding rapidly. In addition to these, so-called stepless automatic transmission has recently been developed to remove the shift stage so that there is no shift shock at the time of shifting.

The present invention relates to the automatic transmission. The automatic transmission does not have a mechanical clutch device that transmits or blocks engine power to the transmission, and uses a torque converter using a fluid coupling. Therefore, only an accelerator pedal and a brake pedal are provided to the driver's seat. There is no clutch pedal required for enforcement. Therefore, only the operation of the accelerator pedal and the brake pedal can increase or decrease the driving speed of the vehicle. However, the automatic transmission also determines the driving direction of the vehicle, such as forward or reverse, and the determination of whether to transmit power such as neutral, driving, parking, etc. should be selected by the driver. Therefore, the automatic transmission vehicle is provided with a select lever for allowing a driver to perform the above operation. For convenience of understanding, an example of a conventional select lever device will be described below with reference to FIGS. 1 and 2. According to this, there is provided a detent plate 20 fixed to the other end of the base plate 10 fixed to the vehicle body and one end of the sleeve 12 fixed to the base plate 10. The detent plate 20 has a plurality of select positions ｛P (parking position), R (reverse position), N (neutral position), D (traveling position), and 2 (2) respectively divided by predetermined steps on the upper surface. Inner position) and L (low speed position) are sequentially formed. An arc-shaped guide hole 22 is formed on the detent plate 20 below the select position.

Meanwhile, a select lever assembly 40 rotatably supported by the sleeve 12 is provided. The select lever assembly 40 has a rotary shaft 32 rotatably coupled to the sleeve 12 with a pair of bushes 34 interposed therebetween as shown in detail in FIG. 2, and a lower end welded to the rotary shaft 32. It is fixed and supported by the support plate 30 which rotates about the rotation shaft 32. The other end of the rotary shaft 32 is rotated in accordance with the rotation of the rotary shaft and the select lever 50 to which the select control cable is connected to the lower end is fixed. The rotation shaft 32 is restricted from the sleeve 12 by the fixing nut 32a.

The select lever assembly 40 is provided with a hollow shaft 42 whose lower end is fixed to the upper portion of the support plate 30. A knob 46 is provided on the upper portion of the hollow shaft 42 to be gripped by the driver, and an elevating rod 44 having a force that is elastically supported by the spring 44a and protrudes downward at the inside of the hollow shaft 42. Is installed. The lower end of the elevating rod 44 moves along the upper surface of the detent plate 20 and is arranged to be positioned on at least one select position. The lower end of the knob 46 is provided with a select knob 48 that is fixed to the upper end of the elevating rod 44 penetrating the hollow shaft 42 to move the elevating rod 44 by moving upward.

Since a predetermined gap is formed between the lifting rod 44 and the hollow shaft 42, a supporting means for restricting the flow of the lifting rod 44 at the lower end of the hollow shaft 42 is required. . Therefore, the caulking portion 45 is formed at the lower end of the hollow shaft 42 and the lifting rod 44 is inserted therein so as to press the circumference of the caulking portion 45 radially inward so that the lifting rod 44 flows in the radial direction. It is configured to limit.

One side of the support plate 30 is inserted into the guide hole 22 to guide the rotation of the lifting rod 44 and at the same time limiting the rotation angle such that the select lever assembly 40 rotates only within a specific range. The detent pin 36 is fixed.

On the other hand, one side of the base plate 10 is provided with a parking locking lever 60 to interfere with the locking pin 38 fixed to the support plate 30 to limit the separation of the lifting rod 44 in the parking position. A solenoid 62 is installed to operate by a specific signal (brake signal) to allow the parking lock lever 60 to rotate to allow the lifting rod 44 to be separated.

The operation state of the conventional select lever having such a configuration will be briefly described as follows. When the knob 46 is pulled forward or backward, the select lever assembly 40 is rotated about the rotation shaft 32. At this time, the lifting rod 44 moves smoothly without any manipulation between the neutral position (N) and the driving position (D). Further, the movement from the first speed position L of the select position to the second speed position 2 and the neutral position N can also be moved without jamming. And the movement from the reverse position (R) to the driving position (D) is also not limited. However, movement in a specific direction and position is limited in order to prevent sudden driving state change during driving due to misoperation. That is, moving from the neutral position (N) or the traveling position (D) to the second speed position (2) or the first speed position (L) or the reverse position (R) and the parking position (P) is the lifting rod (44), respectively. The movement is restricted by the step of the select position of. Therefore, in the case where such movement is required, it is possible to move to the selected position only by pulling the select knob 48 and moving the knob 46 with the tip of the lifting rod 44 separated from the select position. .

In particular, in the parking position (P), it is possible to move to another position only by pulling the select knob 48 even when entering or leaving the vehicle. In this case, the lifting rod 44 is parked when the brake is not bright. Rotation is limited by the locking lever 60. Therefore, when moving from the parking position (P) to another position, it should be assumed that the solenoid 62 must release the fixed state of the lifting rod 44 by rotating the parking locking lever 60 by pressing the brake. This is a supplementary means installed to prevent safety accidents because there is a risk of sudden backward or sudden start of the vehicle when the vehicle is freely shifted from the parking position to another position.

However, the conventional select lever device having the above configuration has a problem of supporting the lifting rod against the hollow shaft, which is cumbersome, and thus, the assemblability is deteriorated.

That is, as described above, to guide the lifting rod 44 to the hollow shaft 42 without disaster flow, the caulking portion 45 should be formed at the lower end of the hollow shaft 42, and the caulking portion 45 at the time of assembly. Since the lifting rod 44 is supported by pressurizing the inner side, it is difficult to work in the same form for every work and of course, the work time is delayed. The outer surface of the rod is damaged to adversely affect the elevating action of the elevating rod 44, on the contrary, when the pressure is small, the elevating rod is flowed, and there is a fear of departure from the select position. In need. These problems are to act as a problem of poor workability, such as delay of the assembly time as a whole.

The present invention has been devised in view of the above-mentioned problems, and its purpose is to automatically fix the elevating rod to the hollow shaft while maintaining the stable elevating action of the elevating rod, thereby improving the assembly and workability. The present invention provides a select lever device for a shift vehicle.

1 is a perspective view showing the configuration of a conventional select lever device

2 is a longitudinal cross-sectional view showing the configuration of a conventional select lever device;

Figure 3 is a longitudinal sectional view showing the configuration of the select lever device according to the present invention

Figure 4 is an exploded perspective view showing the main components of the select lever device according to the present invention

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

10: base plate 12: sleeve

20: detent plate 22: guide hole

30: support plate 32: rotation axis

32a: fixing nut 34: bush

40: select lever assembly 42: hollow shaft

44: lifting rod 46: knob

48: Select Knob 100: Guide Bush

110: slope

An object of the present invention as described above is a detent plate having a plurality of select positions are formed on the top, a hollow shaft that rotates with respect to the dedent plate, and a lifting rod which is inserted into the hollow shaft so as to be moved up and down along the select position. In constructing a select lever device of an automatic transmission having a gearbox, the hollow shaft may be achieved by a select lever device of an automatic transmission including a guide bush that is press-fitted to a lower end to allow the lifting of the lifting rod.

Hereinafter, with reference to the accompanying drawings will be described a preferred embodiment of the automatic lever vehicle select lever device according to the present invention is as follows. (The same configuration as the conventional description is omitted, the same reference numerals are given by the same description. do.)

3 is a longitudinal sectional view showing a configuration of a select lever employing a select lever device of an automatic transmission vehicle according to the present invention. According to the present invention, the guide bush 100 is provided at the bottom of the hollow shaft 42.

According to FIG. 4, the guide bush 100 is fitted to the inside of the hollow shaft 42, and on one side thereof, an inclined surface 110 formed by chamfering is formed to facilitate the press fitting into the hollow shaft 42. do. At this time, the angle (α) of the chamfer may be set to 15 ° to 20 °.

In addition, the inner diameter of the guide bush 100 should be configured to be at least larger than the outer diameter of the lifting rod 44 so as not to interfere with the lifting operation of the lifting rod 44. At this time, the tolerance should be configured as small as possible, preferably less than 0.2mm.

The guide bush 100 is made of porous metal to contain a certain amount of oil to achieve a smooth operation during lifting of the lifting rod, and at the same time the oil flows down when friction with the select positions at the end of the lifting rod 44 It is also possible to carry out lubrication.

The present invention having such a configuration requires a separate caulking operation because the assembly of the select lever assembly 40 is completed by pressing the guide bush 100 into the lower end of the hollow shaft 42 and assembling the lifting rod. As a result, workability can be improved since no skilled technique is required.

In addition, since the guide bush 100 guides the lifting rod 44, it is possible to minimize the radial flow of the Sunggang rod during the lifting operation.

As described above, the select lever device of the automatic transmission vehicle according to the present invention can improve assembly and workability by guiding the lifting rod with a guide bush provided on the hollow shaft, as well as radial flow of the lifting rod after assembly. It will have the effect of preventing.

Claims (3)

A detent plate 20 having a plurality of select positions formed at an upper end thereof, a hollow shaft 42 that rotates with respect to the detent plate 20, and a hollow shaft 42 that can be lifted and lowered to move along the select position. In constructing a select lever device for an automatic transmission vehicle having a lifting rod 44 to The hollow shaft 42 is pressed in the lower end of the select lever device of an automatic transmission vehicle including a guide bushing (100) to allow the lifting of the lifting rod (44). The select lever of the automatic transmission vehicle according to claim 1, wherein the guide bush (100) forms an inclined surface (110) formed at one side by chamfering to facilitate entry into the hollow shaft (42). Device. 3. The select lever device of an automatic transmission vehicle according to claim 1 or 2, wherein the guide bush (100) is formed of a metal containing a certain amount of oil.