KR19980068100U - Select lever device of automatic transmission vehicle - Google Patents

Abstract

The present invention relates to a select lever device applied to an automatic transmission vehicle, comprising: a base plate 10 to which a sleeve 12 is fixed; A detent plate 20 fixed to the base plate 10 by the sleeve 12 and having select positions P, R, N, D, 2, and L formed on the top thereof separated by a step; A support plate 30 having a lower end fixed to a rotating shaft 32 rotatably coupled to the sleeve 12 and rotating forward and backward and having a hollow shaft 100 connected to the upper end thereof; A lifting rod 110 supported by a spring 112 to protrude downward in the hollow shaft 100; A knob 130 provided on an upper portion of the hollow shaft 100; It is installed so as to be elevated in the knob 130, the lower end is connected to the elevating rod 110, the operation cam 120 is formed on one side of the outer circumferential surface immersed in the radially inward from the top to the bottom and; It is installed so as to be movable in the horizontal direction in the knob 130, the button 140 having a cam protrusion 142 for raising the lifting rod 110 by interfering with the cam groove 122 by pressing; Select lever device for variable speed vehicles.

Description

Select lever device of automatic transmission vehicle

The present invention relates to a select lever device of an automatic transmission vehicle, and more particularly, to a select lever device applied to an automatic transmission vehicle to select driving conditions such as high speed forward and low speed forward or reverse.

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 combustion 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 that allows the driver to perform the above operation.

The select lever includes a lifting rod that moves along a plurality of select positions formed by a step, and the lifting rod is moved by a separate operating means, and the movement in the select position is performed. The select position is mainly formed on the dent plate which is arranged vertically on the base plate. The select position is formed on the top of the dent plate according to the position and interferes with the lifting rod operated by the lifting knob (hereinafter referred to as 'knob type') and is formed on the surface of the dent plate and operated by the pushbutton. A type that interferes with the lifting rod (hereinafter referred to as a button type) has been developed.

In the former 'knob type', the lifting rod is raised by pulling the lifting knob upward while the lower end of the lifting rod is directly pressurizing the upper surface of the select position by the spring, and the movement of the latter is allowed. In the 'button type', as opposed to the knob type, an operating pin is provided at the end of the lifting rod to interfere with the select position, and the lifting rod moves downward by pressing the button while the lifting rod is always pushed upward by the spring. Movement on the select position is allowed.

For the sake of understanding, a configuration of a conventional knob type select lever will be described with reference to FIGS. 1 to 3. 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 having a lower end fixed to the upper portion of the support plate 30 as shown in FIG. 3. 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. At the lower end of the knob 46, a select knob 48 for operating the elevating rod 44 by moving the pin 48a is fixed to the upper end of the elevating rod 44 penetrating the hollow shaft 42. It is provided to be movable.

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 the selector assembly 40 to limit the rotation angle such that the rotation only within a specific range The tent 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 provided which is operated by a specific signal (brake signal) to allow the parking lock lever 60 to rotate and allow the lifting rod 44 to escape.

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.

This 'knob-type' select lever device is somewhat selected because the lifting rod can be operated by pulling the select knob 48 upward by simultaneously using the index finger, the middle finger, and the ring finger while holding the knob 46. The operation is inconvenient. Therefore, a 'button type' has been developed that can operate the lifting rod using only the thumb while holding the knob as described above.

However, in the related art, the 'button type' has a problem in that the select position is not applicable to the 'knob type' positioned at the top of the dent plate.

That is, since the lifting rod is lowered by the pressing of the button, it is not applicable to the knob type in which the select position is formed at the upper end of the detent plate as disclosed in the related art. This problem is accompanied by a problem in which the designer has to select the appropriate one according to the type of vehicle or the transmission and the lack of mutual compatibility according to the taste of the driver, which cannot be satisfied. In other words, in the case of adopting the button type in the transmission employing the knob type, it is necessary to replace all of the base plate and its support including the select lever assembly, so that the specification of the select lever is not easily changed.

The present invention has been made in view of the above problems, and its object is to provide a select lever device of an automatic transmission vehicle that can provide compatibility regardless of the shape of the dedent plate by adopting a button in a knob type. have.

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

Figure 2 is a longitudinal sectional view showing a conventional select lever device configuration

3 is a cross-sectional view taken along the line A-A of Figure 2 showing an operating state of a conventional lifting rod.

Figure 4 is a perspective view showing the appearance configuration of the select lever device according to the present invention

5A and 5B are longitudinal sectional views showing an operating state 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

22a: extension part 30: support plate

32: rotating shaft 32a: fixing nut

34: Bush 36: Detent Pin

100: hollow shaft 110: lifting rod

112: spring 120: operating cam

122: cam groove 130: knob

140: button 142: cam projection

144: operator 146: spring

An object of the present invention as described above and the base plate is fixed to the sleeve; A detent plate fixed to the base plate by a sleeve and having select positions (P, R, N, D, 2, and L) separated by a step at an upper end thereof; A support plate having a lower end fixed to a rotating shaft rotatably coupled to the sleeve and rotating forward and backward with respect to the rotating shaft and having a hollow shaft connected to the upper end; A lifting rod spring-loaded to protrude downward in the hollow shaft; A knob provided on an upper portion of the hollow shaft and extending downward to surround the circumference of the hollow shaft; An actuating cam which is installed to be liftable in a knob, and has a lower end connected to the elevating rod and having a cam groove immersed radially inward from an upper side to a lower side on an outer circumferential surface; It is installed so as to be movable in the horizontal direction in the knob, it can be achieved by the select lever device of the automatic transmission vehicle consisting of a button having a cam projection for raising the lifting rod to interfere with the cam groove by pressing.

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

Figure 4 is a longitudinal sectional view showing the configuration of the select lever device according to the present invention. According to the present invention is provided with a lifting rod 110 is inserted into the hollow shaft 100 to be elevated. The upper end of the hollow shaft 100 is provided with a spring 112 for elastically supporting the lifting rod 110 has a force to always protrude downward. The lower end of the elevating rod 110 by the spring 112 is to maintain a state in close contact with the selected one of the selected positions.

The upper portion of the hollow shaft 100 is provided with a knob 130 to be gripped by the driver. Knob 130 is made of a soft synthetic resin and is extended to the bottom to surround the periphery of the hollow shaft (100).

On the other hand, the upper portion of the hollow shaft 100 is provided with an operation cam 120 is connected to the upper end of the elevating rod 110 is screwed. On one side of the operation cam 120 is formed a cam groove 122 immersed in the radially inward direction from the top to the bottom.

A button 140 is installed to be inserted radially inwardly from one side of the knob 130 to penetrate in a vertical direction to a position adjacent to an end thereof to form an operation hole 144 that allows penetration of the operation cam 120. . One side of the operation hole 144 in detail corresponding to the cam groove 122, the cam protrusion 142 is formed to interfere with the cam groove 122. The inner end of the knob 130 is provided with a spring 146 that elastically supports the button 140 in the protruding direction.

In the present invention having such a configuration, since the spring 112 in the hollow shaft 100 pushes the lifting rod 110 downward when not in operation, the lower end of the lifting rod 110 is selected. It keeps in contact with. When the button 140 is pressed in this state, as shown in FIG. 5B, the cam protrusion 142 and the cam groove 122 interfere with each other to raise the operation cam 120. At this time, the spring 146 in the knob 130 is compressed and allows the entry of the button 140. Therefore, the lifting rod 110 connected to the operation cam 120 rises in the vertical direction along the hollow shaft 100 and the lower end is separated from the select position. Therefore, it is possible for the driver to move the knob 130 forward or backward while the button is pressed, so that the driver can perform a desired select operation.

Of course, when moving from the parking position (P) to another position can be moved only when a brake signal is applied as in the prior art.

As described above, the select lever device of the automatic transmission vehicle according to the present invention has an effect that the select operation can be easily performed by allowing a button to be adopted in the knob type.

Claims (2)

A base plate 10 to which the sleeve 130 is fixed; A detent plate 20 fixed to the base plate 10 by the sleeve 130 and having select positions P, R, N, D, 2, and L formed on the top thereof separated by a step; A support plate 30 having a lower end fixed to a rotating shaft 32 rotatably coupled to the sleeve 12 and rotating back and forth with respect to the rotating shaft 32 and having a hollow shaft 100 connected to the upper end thereof; A lifting rod 110 supported by a spring 112 to protrude downward in the hollow shaft 100; A knob 130 provided at an upper portion of the hollow shaft 100 and extending downward to surround a circumference of the hollow shaft 100; It is installed so as to be lifted in the knob 130, the lower end is connected to the lifting rod 110, the operation cam 120 is formed on the outer surface one side is immersed in the radially inward from the top to the lower portion is formed )and; It is installed so as to be movable in the horizontal direction in the knob 130, the button 140 having a cam protrusion 142 for raising the lifting rod 110 by interfering with the cam groove 122 by pressing; Select lever device for variable speed vehicles. According to claim 1, The button 140 is formed in the portion adjacent to the end of the operating hole 144 to allow the vertical penetration of the operation cam 120, the spring 146 provided in the knob 130 The select lever device of the automatic transmission vehicle characterized in that the elastic support in the direction projecting from the knob (130).