KR19990010330A - Single Link Power Shift Unit - Google Patents

Abstract

The present invention relates to a single-link power shift device mounted on an automobile transmission to reduce the operating force of the shift lever. In particular, the shift lever is rotated when the shift lever is selected and linearly shifted when the shift lever is shifted. A single link rod 55 which transmits the operating force of the lever 50 to the transmission 53 side; When the link rod 55 is connected to the end of the link rod 55 and installed on the transmission 53 side, the link rod 55 rotates up and down, and the striker 61 moves up and down, and the link rod 55 moves linearly. (Shifting) the power shifter 60, the striker 61 is moved back and forth by the back pressure of the compressed air; Torsion coupled to the end of the striker 61 of the power shifter 60 is a linear movement (in selecting) and rotational movement (in shifting) in the upper case 56 of the transmission 53 according to the operation of the striker 61. A shaft 71; When the torsion shaft 71 is engaged in a direction orthogonal to the torsion shaft 71 and the torsion shaft 71 is linearly moved, the shift lug 58 of each shift stage is selected and the shift rail 59 when the torsion shaft 71 is rotated. It is composed of a lever shift 75 for determining the gear shift stage by moving the gear, thereby transmitting the gear selection and shifting operation force to the power shifter through one link to perform gear shifting. In addition, the installation structure is simplified, and the shift operation force is reduced and the shift operation feeling is improved.

Description

Single Link Power Shift Unit

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a power shift device mounted on an automobile transmission to reduce operating force of a shift lever. In particular, the present invention relates to a gear shift by transmitting a selection and shifting operation force of a shift lever to a power shifter through one link. The present invention relates to a single-link type power shift device that not only simplifies the power shift installation structure but also reduces the shift operation force and improves the shift operation feeling.

In the current development trend of medium and large trucks, in addition to the basic performance such as high speed and large capacity, the importance of improving convenience such as driving operability is greatly increased. Therefore, in order to provide the convenience of a shift operation, the power shift apparatus is provided in the shift operation mechanism.

The power shift device is a device for quickly and easily performing shifting operation in a transmission of a medium and large vehicle. When the device is applied, the power shifting device can reduce the shifting operation force by about 1/2 than that of a general shifting operation mechanism. .

That is, the power shift is supplied by the compressed air into the power shifter 10 through the air tank 1 as shown in FIG. 1, and the shift operation is performed even with a small force by the compressed air when the shift stage of the shift lever 5 is determined. It has a function to make this easy.

Here, the above-described conventional multi-link power shift device is a selecting link 11 for selection for transmitting the operating force of the shift lever 5 to the transmission 3 as shown in FIGS. 1 and 2. And shifting links 12 for shift stage determination are respectively connected to the shift lever 5 and the transmission 3 side.

That is, the selecting link 11 is coupled to a plurality of links are directly connected into the transmission 3, and the shifting link 12 is connected to the power shifter 10 at the shift lever 5.

In particular, the selecting link 11 has a curved select lever 13 connected to an end thereof, and the select lever 13 is rotated at the time of operation of the shift lever 5, and the seal connected to the end side thereof. The locating lug 14 is activated.

Referring to FIG. 3, the multi-link power shift apparatus described above will be described in more detail. The operating force transmitted through the selecting link 11 is rotated by the shifting lug 14 so that the shift lever 15 moves linearly. One of the plurality of shift lugs 17 connected to the shift rail 16 of the shift stage is selected.

That is, the finger portion 15a of the shift lever 15 selects one of the shift lugs 17 among the 1 / R, 2/3, and 4 and 5 shift lugs 16. Then, the interlock plate 18 is provided on the side of the finger portion 15a of the shift lever 15 to align the shift lugs 17, and the projection 15a and the shift lug of the shift lever 15 during the shift operation. 17) to prevent interference.

In this state, when the operating force of the shift lever 5 is transmitted into the power shifter 10 through the shifting link 12, the torsion shaft 19 is rotated while receiving the force of the air pressure, and at the same time, the torsion shaft ( 19 and the spline-coupled shift lever 15 are also rotated to linearly move the shift rail 16 through the shift lug 17.

That is, when the torsion shaft 19 rotates, the finger portion 15a of the shift lever 15 rotates in one direction, and at the same time, the shift lug 17 coupled with the finger portion 15a is shifted and shifted. By shifting the rail 16 in a straight line is shifted to the desired gear stage.

However, the conventional multi-link type power shift device constructed and operated as described above is composed of two links in which the shifting link 12 and the selecting link 11 are separated, so that the installation structure of the power shift is complicated and the parts are complicated. As well as the number, there is a problem that the space utilization of the vehicle is limited.

In addition, the prior art has a problem that the transmission operation force is increased because the transmission operation force is made of two links to increase the transmission operation force is increased, as well as the shift operation feeling is reduced.

The present invention has been made to solve the above-described problems, by simplifying the installation structure of the power shift, as well as the shift operation force and shift operation feeling by configuring to transmit the selection and shift operation force to the power shifter and to perform the shift operation in one link. It is to provide a single link type power shift device to improve this.

1 is an appearance mounting view of a conventional multi-link power shift apparatus;

2 is a detailed view of portion A of FIG. 1;

3 is a cross-sectional view taken along the line B-B of FIG.

4 is an external configuration diagram showing a single link power shift device according to the present invention;

5 is a detailed view of the portion C of FIG.

6 is a cross-sectional view taken along the line D-D of FIG. 5;

7 is a cross-sectional view of the F-F line of FIG. 6 as an internal configuration diagram of the power shifter of the present invention;

8 is a perspective view of the G direction of FIG.

9 is a cross-sectional view taken along the line E-E of FIG. 6.

Explanation of symbols for the main parts of the drawings

50: shift lever 53: transmission

55: link rod 56: upper case

57: lower case 58: shift lug

59: shift rail 60: power shifter

61: striker 62: operating rod

63: shifting booster 64: piston rod

65: striker bolt 66: connecting member

68: snap ring 71: torsion shaft

71a: torsion lever portion 71b: shaft portion

72: Bushing 73: O-ring

74a: three bolt 74b: key

75: lever shift 80: interlock means

81: center portion 82: rod portion

83: guide portion 84: connecting portion

85: return spring 86: stop bar

The single-link type power shift device of the present invention for realizing the above-mentioned object is rotated when the shift lever is selected, and is linearly moved when shifting is shifted, thereby shifting the operating force of the shift lever to the transmission side. A singular link load to transfer; When the end of the link rod is connected and installed on the transmission side, when the link rod is rotated (selecting), the inner striker end is rotated up and down, and when the link rod is linearly moved (Shifting), the striker is subjected to the force of compressed air. A power shifter linearly moved; A torsion shaft coupled to the striker end of the power shifter, the linear shaft being selected and rotating in the upper case of the transmission according to the operation of the striker; It is composed of a lever shift to determine the shift stage by selecting a shift lug of each shift stage when the torsion shaft is linearly moved in the direction orthogonal to the torsion shaft and moving the shift rail when the torsion shaft is rotated. do.

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

In the single-link power shift apparatus according to the present invention, as shown in FIG. 4, the shift lever 50 and the power shifter 60 are connected to one link rod 55 to select the shift lever 50. And shifting (Shifting) operating force is configured to be transmitted to the inside of the transmission 53 through the link rod 55 and the power shifter 60.

That is, according to the present invention, as shown in FIGS. 5 and 6, when the shift lever 50 is selected, a rotational motion is performed, and when the shift lever is shifted, a linear motion is performed to shift the operation force of the shift lever 50. When the link rod 55 of the single stage and the end of the link rod 55 are transmitted to the transmission rod 53 is installed on the transmission 53 side and the link rod 55 is rotated (when selected), an internal striker 61 is provided. ) Is moved up and down and the link rod 55 is linearly moved (when shifting), the power shifter 60 in which the striker 61 is moved back and forth under the force of compressed air, and the striker 61 of the power shifter 60. A torsion shaft 71 coupled to an end and linearly (selecting) and rotating (shifting) in the upper case 56 of the transmission 53 according to the operation of the striker 61, and the torsion shaft 71. The torsion shaft 71 is straight Dongdoel when it is selected, the shift lug 58 of each speed change stage, and the torsion shaft consists of a shift lever (75) to (71) to move the shift rail (59) when the rotary movement determines the speed change stage.

In addition, the upper case 56 and the lower case 57 are installed outside the transmission 53 so that the power shift device is introduced into the transmission 53. Likewise, the upper end 56 of the lower case 57 is formed by forming the space in which the end of the lever shift 75 is introduced and the shift lug 58 and the shift rail 59 are operated. 71 and lever shift 75 are inherently intended to be operated.

First, when the power shifter 60 is described with reference to FIGS. 7 and 8, the operating rod 62 connected to the link rod 55 to rotate and linearly move, and the linear movement of the operating rod 62. The valve 63a is opened to provide compressed air to one side, and the shift force booster 63 moves the power piston 63b in the same direction as the operating rod 62 by the force of the compressed air. A piston rod 64 mounted around the rod 62 and linearly moved by the power piston 63b, and orthogonally mounted to the operating rod 62 around the piston rod 64 so that The striker 61 for transmitting the operating force to the torsion shaft 71, the striker bolt 65 penetrated and inserted into the operating rod 62 from the outside of the striker 61, and the striker bolt 65 Mounted on the outside the operating rod 62 and the striker 61 at the same time And a connecting member (66) mounted so ago, it consists of a retaining ring 68 for interfitting the striker 61 and the piston rod (64).

Here, the variable speed booster is a valve 63a for opening the front hole or the rear hole of the power piston 63b according to the linear movement of the operating rod 62, and an air pipe for providing compressed air in the valve 63a. And a power cylinder chamber 63d for providing compressed air to one of the front and rear of the power piston 63b in accordance with the opening of the valve 63a to move the power piston 63b.

A hemispherical groove 65a is formed at an end of the striker bolt 65, and a spring 67a is embedded in the recess 61a of the striker 61, and is supported by the spring 67a. A striker ball 67b is formed to engage the groove 65a so as to guide the shift neutral position. This is because the striker bolt 65 passes over the striker ball 67b and moves to one side during the shifting operation, and in the neutral state, the striker ball 67b is inserted into the groove 65a of the striker bolt 65. Will be.

In addition, the striker 61 protrudes to one side so that the torsion shaft 71 is linearly moved when the end portion thereof is vertically rotated, and the torsion shaft 71 is orthogonal to the front end portion of the torsion shaft 71 when the torsion shaft 71 is moved back and forth. Are combined. That is, the end portion of the striker is formed into a spherical shape and inserted into the distal end portion of the torsion shaft 71.

8, the piston rod 64 is not moved and only the operating rod 62 is moved at the time of initial shifting operation, as shown in FIG. 8, so that the shift force 63 is moved. Both sides in the axial direction are formed such that a small distance t is maintained between the striker 61 and the piston rod 64 so that the operating rod 62 and the striker 61 are selected during the selective operation. Both sides orthogonal to the axial direction are integrally formed in the striker 61 so as to be integrally rotated.

That is, the connecting member 66 is formed in an elliptical relatively short width in the axial direction, the through hole 66a to which the operating rod 62 is coupled and the bolt hole 66b into which the striker bolt 65 is inserted. ) Are orthogonal to each other.

Next, the torsion shaft 71 is coupled to the striker 61 and the front end portion as shown in Figure 6 is a torsion lever portion 71a of the bending type that is rotated and moved up and down about the end portion, and the torsion lever It is composed of a shaft portion (71b) that is connected orthogonally to the end of the portion (71a) is rotated and linearly moved in the upper case (56).

Here, the bushing 72 is mounted between the torsion shaft 71 and the upper case 56 so that the linear and rotational movement of the torsion shaft 71 can be easily performed, and oil in the transmission 53 and the upper case 56 The o-ring 73 is mounted to prevent leakage to the outside.

In addition, the combination of the torsion shaft 71 and the shift lever 75 is a set that is coupled through the shift lever 75 and the torsion shaft 71 while the shift lever 75 is extrapolated to the torsion shaft 71. Key grooves are formed to be mutually fixed by the bolt 74a and the nut or to face each other on the outside of the torsion shaft 71 and the inside of the shift lever 75, and a key 74b coupled to the key grooves is mounted and mutually fixed. do. Of course, the torsion shaft 71 and the shift lever 75 may be coupled to each other by using both the set bolt 74a and the key 74b.

On the other hand, the shift lever 75 and the shift lug 58 meet in the lower case 57 and properly align the shift lug 58 therein, and at the same time prevent interlocking of the shift lever 75. The interlock means 80 is provided with a connecting portion 84 through which the center portion 81 penetrates so that the end of the shift lever 75 is inserted, and the connecting portion 84 is installed. A plurality of rods 82 installed on both sides at the bottom of the rod and linearly moved along the shift lever 75 so that only one shift lug 58 is selected, and fixed to the lower case 57. A plurality of guide portions 83 for guiding the linear movement of 82, and a plurality of return springs 85 inserted into the guide portion 83 to provide an elastic force to the rod portion 82.

Here, the rod portion 82 is a step (K) is formed at a predetermined position of the rear end of the tip, the guide portion 83 is the step (K) to limit the movement of the rod portion 82 at its tip. The stopper S which catches is formed.

In addition, when the shift lug 58 is additionally installed, one side of the guide portion 83 may be removed, and when the shift lug 58 is reduced, the shift position of the rod 82 may be limited. A stop bar 86 may be installed. That is, when the shift stage is extended to six and seven stages, a shift lug 58 and a shift rail 59 need to be added, so that the rod 82 can be moved between newly added shift lugs. It can be installed to remove the stop bar 86 mounted in front of the portion (83).

Referring to the operation of the single-link power shift device according to the present invention configured as described above are as follows.

Selecting the shift lever 50 in the neutral position rotates the link rod 55 between the shift lever 50 and the power shifter 60 as shown in FIG. 4, and the rotational force is the power shifter in FIG. 7. The operating rod 62, the connecting member 66, and the striker 61 in the 60 are rotated. In addition, the striker 61 is rotated upward or downward in FIG. 6 to linearly move the torsion shaft 71.

Accordingly, the end of the lever shift 75 coupled to the torsion shaft 71 is located between the shift lugs 58 of one of the first stage reverse, the second stage three stages, and the fourth stage five stages, and the lever shift 75 At the same time, the rod portion 82 of the interlock means 80 is also moved at the same time to align other shift lugs 58 not selected and to prevent mutual interference during the shift operation of the lever shift 75. .

In this state, when the shift lever 50 is shifted to a desired shift stage, the link rod 55 is linearly moved in one direction as shown in FIGS. 4 and 5. At the same time, the operating rod 62 in the power shifter 60 is moved to one side in FIG. 7. At this time, one valve of the shifting booster 63 is opened, and compressed air causes the power piston 63b of the operating rod 62. Push in the direction of movement.

Here, when the operation rod 62 is moved in one direction, the variable speed booster 63 is opened while the valve 63a to which compressed air is supplied through the air pipe 63c moves in one direction, and the other side is opened. As compressed air flows into the other power cylinder chamber 63d through the open valve 63a, the power piston 63b is pushed in one direction.

When the power piston 63b, which is moved by the assisting force of air pressure, pushes the piston rod 64 in one direction, the piston rod 64 is fixed by the striker 61 and the snap ring 68. The striker 61 also moves in the axial direction.

Here, the power shifter 60 is the operating rod 62, the connecting member 66, the striker bolt 65, as described above, when the shift lever 50 is selected as shown in Figs. ), The striker 61 rotates integrally, but when the operating rod 62 is initially moved by the shifting lever 50 during shifting operation, the connecting member 66 and the piston rod as shown in FIG. Since the minute gap t is formed between the 64 and the striker 61, the shifting force part 63 is operated while only the operating rod 62, the connecting member 66, and the striker bolt 65 are moved. The striker 61 is moved through the piston rod 64 to perform a shift operation.

Therefore, when the striker 61 moves in the axial direction as described above, the torsion shaft 71 coupled to the striker 61 is rotated as shown in FIG. 6, and at the same time, the lever shift 75 is also one. The gear shift is performed by linearly moving the shift rail 59 through the selected shift lug 58.

The single-link type power shift device according to the present invention constructed and acting as described above performs shifting operation and selection operation through one link rod, thereby reducing the number of parts of the shift device and simplifying the structure as well as maximizing utilization of in-car space. There is an advantage to this.

In addition, the present invention is connected to one link rod to perform the selection and the shift operation through the power shifter has the advantage of reducing the power transmission loss to improve the driver's shift operation feeling.

Claims (16)

A single link rod that rotates when the shift lever is selected, and linearly moves when shifting, and transmits the operating force of the shift lever to a transmission side; When the end of the link rod is connected and installed on the transmission side, when the link rod is rotated (selecting), the inner striker end is rotated up and down, and when the link rod is linearly moved (Shifting), the striker is subjected to the force of compressed air. A power shifter linearly moved; A torsion shaft coupled to the striker end of the power shifter, the linear shaft being selected and rotating in the upper case of the transmission according to the operation of the striker; It is composed of a lever shift to determine the shift stage by selecting a shift lug of each shift stage when the torsion shaft is linearly moved in the direction orthogonal to the torsion shaft and moving the shift rail when the torsion shaft is rotated. Single link power shift device. According to claim 1, wherein the power shifter is connected to the link rod and the rotary rod and linear movement, the valve is opened in accordance with the linear movement of the operating rod is provided with compressed air to one side and the power piston to the power of the compressed air A shifting power unit for moving in the same direction as the operating rod, a piston rod mounted around the operating rod and linearly moved by the power piston, and mounted orthogonally to the operating rod around the piston rod to operate the shift lever. A striker for transmitting the thrust shaft to the torsion shaft, a striker bolt penetrating into the operating rod from the outside of the striker, a connection member mounted to the outside of the striker bolt to rotate the operating rod and the striker simultaneously, and the striker and With a snap ring that holds the piston rod together. A single link-type power-shift device, characterized in that. The striker ball of claim 2, wherein a hemispherical groove is formed at an end of the striker bolt, a spring is embedded in the groove of the striker, and a striker ball is supported by the spring to be joined to the groove to guide the shift neutral position. Single link type power shift device, characterized in that installed. 3. The single link of claim 2, wherein the striker is protruded to one side so that its end portion is coupled orthogonally to the distal end portion of the torsion shaft such that the torsion shaft is linearly moved during vertical rotation and the torsion shaft is rotated during forward and backward movement. Type power shift device. 5. The single link power shifting device according to claim 4, wherein the striker has a spherical end portion formed into a spherical shape and is inserted into the distal end portion of the torsion shaft. According to claim 2, wherein the connecting member is formed in such a way that the two sides in the axial direction to maintain a minute gap between the striker and the piston rod so that only the operating rod is moved during the initial shifting (Shifting) to operate the shifting boosting portion, the selective operation Selecting single link type power shifting device, characterized in that both sides perpendicular to the axial direction are formed in close contact with the inner side of the striker so that the operating rod and the striker are integrally rotated. The single link type according to claim 6, wherein the connection member is formed in an elliptical shape having a relatively short width in the axial direction, and a through hole to which the operating rod is coupled and a bolt hole into which the striker bolt is inserted are orthogonal to each other. Power shift device. The torsion shaft of claim 1, wherein the torsion shaft is coupled to the striker and the front end of the torsion lever to be rotated and moved up and down about the end, and is orthogonally connected to the end of the torsion lever. And a shaft portion that is linearly moved. The single link power shifting device according to claim 1, wherein a bushing is mounted between the torsion shaft and the upper case to facilitate linear and rotational movement of the torsion shaft. The single link power shifting device according to claim 1, wherein an o-ring is mounted between the torsion shaft and the upper case so that oil in the transmission does not leak to the outside. The single link according to claim 1, wherein the coupling of the torsion shaft and the shift lever is fixed to each other by a set bolt and a nut fastened through the shift lever and the torsion shaft while the shift lever is extrapolated to the torsion shaft. Type power shift device. 2. The single link type according to claim 1, wherein the coupling of the torsion shaft and the shift lever is formed with key grooves facing each other on the outer side of the torsion shaft and the inner side of the shift lever, and a key coupled to the key groove is mounted at the same time. Power shift device. The single link power shifting device according to claim 1, wherein the shift lever and the shift lug meet in the lower case and align the shift lug therein, and interlock means are provided to prevent mutual interference. The method of claim 13, wherein the interlock means is connected so that the end portion of the shift lever is inserted into the center portion, and is installed on both sides of the bottom of the connecting portion long and linearly moved along the shift lever so that only one shift lug is selected. A plurality of rods, a plurality of guide parts fixed to the lower case to guide linear movement of the rod parts, and a plurality of return springs inserted into the guide parts to provide elastic force to the rod parts. Single Link Power Shift Unit. 15. The single link power shifting device according to claim 14, wherein a step is formed at a predetermined position at the tip of the rod, and a stopper is formed at the tip of the rod to limit the movement of the rod. 15. The single link type according to claim 14, wherein a stop bar is provided at one side in front of the guide part to remove the shift lug, and to reduce the shift lug to limit the moving position of the rod part. Power shift device.