KR0171470B1 - Shift improvement device for transmission - Google Patents

Abstract

The present invention relates to a transmission operation power supply device, and more particularly, to a transmission operation power supply device to perform a shift operation smoothly without applying a large force during shift operation of the transmission, and interlocked with the connection joint (3) on one side. In the piston rod 20 is provided with a housing 40 which forms the left and right pressure chambers 42 and 44 by the piston 21 provided in the piston rod 20 to which the piston end 24 is fixed. A transmission in which power is output to the piston end 24 by opening and closing the pair of flow valves 72 and 74 provided as an operation end 10 and an operation rod 30 that interlock with the shift lever 1. In the operation multiplying apparatus, the operation rod 30 is inserted through the long hole 22 formed on the piston rod 20 to retain a predetermined play and moveably inserted into the piston rod 20. Bolts (14) coupled to the operation De 10; An operating rod having an exhaust hole 74b inserted into the cap 100 inserted into the piston rod 20 and opened at one side at the other end and radially opened at an inner point of the valve lift pin 50 ( 30); A fixed valve seat (60) having a predetermined clearance (52a) with respect to the outside of the valve lift pin (50) and whose outer circumference is movably coupled to the inside of the piston rod (20); A left flow valve 72 and a right flow valve 74 elastically supported at both sides of the fixed valve seat 60 to open and close the play 52a between the valve lift pin 50 and the fixed valve seat; A supply hole formed on the fixed valve seat 60 and controlled according to the moving direction of the valve lift pin 50 and inducing pressure from the play 52a to the pressure chamber selected from the left pressure chamber or the right pressure chamber 44 ( 66) 68; A connector 80 screwed on the piston rod 20 to one side of the high pressure valve seat 60 and having an inlet hole 82 and an outlet hole 84 formed therein; It is provided on the other side of the fixed valve seat 60 is provided with a tube (90) to maintain a predetermined distance from the cap 100 by the spacer 110, in particular for the shift operation, such as a bus or truck It is effectively applied to large vehicles requiring large force.

Description

Power booster for transmission operation

1 is a schematic perspective view showing the configuration of the present invention.

2 is a cross-sectional view showing the main portion of the present invention.

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

4 is a cross-sectional view taken along the line B-B in FIG.

5 and 6 are enlarged cross-sectional views required to show the operating state of the present invention.

7 is an exploded perspective view of main parts of the present invention.

8 is a schematic cross-sectional view of main parts of the present invention.

9 is a schematic sectional view showing the principal parts of the operating state at the time of shifting to the left side.

Fig. 10 is a schematic sectional view showing the main parts of the operation state at the time of shifting to the right.

* Explanation of symbols for main parts of the drawings

1: shift lever 3: connection joint

5: axis of rotation 6: first lever

7: shift end 8: shift rail

9: shift fork 10: operation end

12: incision 20: piston rod

21: piston 22: long hole

24: piston end 25: ball seat

26, 28: through hole 30: operation rod

40 housing 42 left pressure chamber

44: right pressure chamber 50: valve lift pin

52: play 60: fixed valve seat

62, 64: groove 66, 68: supply hole

69: communication hole 72: left flow valve

74: right flow valve 72a, 74a: spring

74b: exhaust hole 80: connector

82: inlet hole 84: outlet hole

90: tube 100: cap

110: spacer 120: spring

122: retaining ring 124, 126: washer

The present invention relates to a transmission operation power supply apparatus, and more particularly, to a transmission operation power supply apparatus that can perform the shift operation smoothly without applying a large force during the shift operation of the transmission.

In general, when operating the transmission, a shift operation is performed to insert the shift lever from the neutral position to a desired position, that is, 1, 2 or 5 gear, and reverse, and then insert the shift lever into the selected shift stage. Compared to the operation, a large force is required in the shift operation for directly engaging the gear, and this phenomenon is more remarkable during the shift operation of a large vehicle such as a bus or a truck.

Therefore, recently, a transmission control power supply device has been developed that does not require a large force during the shift operation as described above. Looking at the conventional technology developed so far, it is disclosed in Japanese Laid-Open Utility Model Publication No. 60-152244. As described above, it has been proposed that the output of the boosted force is removed from the striker by opening and closing the pair of fixed valve seat and the pair of flow valves as the operation rods in the piston rod.

In other words, when the operation rod is moved by the shift lever, the air pipe is attracted to the operation rod to move in the direction of the operation rod, and the air ring is blown into the air pipe at all times so that the valve lifter is pushed to the side by pressing the pressure ring. As a result, the flow valve is pressed by the valve lifter and moved to one side, thereby generating a gap between the flow valve and the fixed balance seat.

On the other hand, since the compressed air is always supplied into the air pipe, the compressed air taken out from the through hole sequentially passes through the gap and the through hole and flows into the cylinder, thereby applying pressure to the piston, which is transmitted from the piston rod to the striker. It is supposed to be.

In such a power unit, an operation rod for operating a pair of flow valves during shift operation, and a detent mechanism for regulating the relative rotational movement of the operation rod and the striker while allowing axial displacement of the piston rod. The detent mechanism is provided in the striker and moves freely sliding in a direction perpendicular to the piston rod, a spring for applying a force in the axial direction of the piston rod to the regulating piston, and an operating rod. A stop bolt composed of a regulated bolt fixed through the radial direction, a pair of fitting holes formed on the mutually opposite surfaces of the regulated piston and the regulated bolt, and a ball inserted between the pair of fitting holes. An iron mechanism is used.

The fitting hole of the regulating piston is circular, but the fitting hole of the regulated bolt is composed of a long hole extending in the axial direction of the operating rod.

Therefore, the operating rod and the striker or the piston rod can be slid relatively by the length of the fitting hole, which is a long hole in the axial direction thereof, but the relative rotational movement between the operating rod and the striker is regulated by the ball.

In this way, the relative rotational movement between the operating rod and the striker is regulated to prevent the twist of the head of the regulated bolt and the striker. The smooth operation can be achieved.

Meanwhile, as disclosed in Korean Patent Publication No. 92-8093, a piston that partitions a pair of cylinders formed in a cylinder and a striker connected to a transmission lever are attached to the outer circumferential surface of the piston rod, and at one end of the air A pair of on / off valves are stored inside the piston rod to which the hose is connected, and a pair of on / off valves is moved by sliding the operation rod inserted at the other end of the piston rod to the shift lever through a link mechanism. In the transmission operating power supply apparatus for operating the transmission by opening and closing the valve and supplying the compressed air supplied from the air hose to the pair of pressure chambers, and driving the piston rod and the striker integrally, the piston rod as a spring It can slide freely in the direction perpendicular to the axial direction and is also a piece as a spring In addition to installing a regulating piston with added force in the axial direction of the rod, the regulating piston is placed on the operation rod in an extension line in the sliding movement direction of the regulating piston and protrudes into the communication hole of the piston rod. Balls are inserted between the pair of fitting holes formed on the mutually opposing surfaces of the regulated bolts, and at least one fitting hole of the pair of fitting holes extends in the axial direction of the piston rod. It has been proposed that the transmission operation force device provided with a connecting member between the piston rod and the striker to prevent the relative rotational movement of both.

However, these conventional techniques have the following problems.

First, the structure of the detent mechanism which limits the relative rotational movement of the operating rod and the striker and at the same time limits the relative rotational movement of the piston rod and the striker.

In other words, the detent mechanism includes components such as springs, regulating pistons, and balls. As the number of components increases, the structure becomes complicated, resulting in inoperability due to an increase in assembly labor, manufacturing cost, and friction between parts. There is a problem.

Second, the shifting sense is reduced due to the tension difference between the valve lift mounting spring in the valve bundle.

In other words, the inner spring tension is configured to be larger than the outer spring tension in order to return to the outer side of the valve lift.

Third, in order to directly connect the end of the air pipe to which pressure is introduced from the outside to the operation rod, a hook is formed at the end of the air pipe, which is very difficult because the locking part is configured to be larger than the outer diameter of the air beam.

Fourth, since the valve lift is in direct sliding contact with the inner surface of the phyton rod, it is necessary to make the working surface of the piston rod with high precision. This follows.

The present invention has been made in view of the above-mentioned deficiencies of the prior art, and its purpose is to simplify the structure of the detent mechanism and at the same time to achieve efficient processing and to increase the transmission sense of the transmission device. It is in providing.

An object of the present invention is to shift a pair of flow valves provided in the piston rod and having a housing for forming a left and right pressure chamber by a piston provided on the piston rod fixed to the piston end is interlocked with the connecting joint on one side. In the transmission operating power transmission device that outputs the power to the piston end by opening and closing the operation end and the operation rod in conjunction with the lever, the piston is inserted through the long hole formed on the piston rod to retain the predetermined clearance and at the same time the piston Exhaust hole is inserted into the operation end is bolted to the operation rod that is movably inserted into the rod and the cap is inserted into the inside of the piston rod and opened to one side at the other end and radially opened at the inner point of the valve lift pin Has a predetermined play with the formed operating rod and the outside of the valve lift pin A fixed valve seat having a side circumference movably coupled to the inside of the piston rod, a left flow valve and a right flow valve elastically supported at both sides of the fixed valve seat to open and close the gap between the valve lift pin and the fixed valve seat, and a fixed valve A supply hole formed on the seat and controlled according to the direction of movement of the valve lift pin and inducing pressure from the play to a pressure chamber selected from the left pressure chamber or the right pressure chamber, screwed onto the piston rod on one side of the fixed valve seat, It is achieved by having a contactor in which a discharge hole is formed and a tube which is provided on the other side of the fixed valve seat to maintain a predetermined distance from the cap by a spacer.

Hereinafter, the specific technical details of the present invention will be described in more detail through one preferred embodiment shown in the accompanying drawings.

1 shows a schematic perspective view of one preferred embodiment according to the present invention.

As shown in FIG. 1, the present invention is provided with an operation end 10 connected to one side of the shift lever 1 by a link means 2 to operate in a selected direction according to the operation of the shift lever 1.

The other side of the operation blend 10 is bolted to the operation rod 30 that is movably inserted into the piston rod 20 as shown in FIG.

As shown in FIG. 4, the operation end 10 is inserted into the long hole 22 formed in the piston rod 20 to have a predetermined clearance, and the operation rod 10 having the cutouts 12 formed at both ends thereof has the operation rod ( 30) is inserted into the lower end of one side.

On the other hand, as shown in Figs. 2 and 3, the piston end 24 is fixedly installed at one side end of the piston rod 20 so that the ball seat 25 can be mounted therein. A lower end is rotatably coupled to the ball seat 25, and an upper end of the connection joint 3 is coupled to one side of the first lever 4.

As shown in FIG. 1, the other end of the first lever 4 is connected to the pivot shaft 5, and one side of the pivot shaft 5 is provided with a second lever 6 which is splined thereto, and the second lever 6. Drives the selected shift jaw 7 to drive the shift rail 8 and the shift fork 9 interlocked therewith.

In FIG. 2, the internal structure of the piston rod 20 is shown in detail. The piston rod 20 is inserted into the housing 40, and the piston 21 is installed around the outside of the piston rod 20. The left pressure chamber 42 and the right pressure chamber 44 are provided on the left side and the right side thereof, and the cover 46 is installed on one side of the housing 40.

As shown in FIG. 3, a cap 100 is installed at an end of the operation rod 30, and a washer 124 is fixed to the center of the operation rod 30 by a fixing ring 122. Spring 120 is installed between the 124 and the washer 126 to be installed in the intermediate step of the cap 100, the operation rod 30 is always in a constant position at no load, the position at this time shift It becomes the neutral position at the time of operation.

As shown in FIG. 2, the valve lift pin 50 is fixedly installed at the outer circumference of the other end of the operation rod 30, and is opened to one side at the center of the other end of the operation rod 30, and at an inner point of the valve lift pin 50. An exhaust hole 32 is formed which opens radially.

The outer side of the valve lift pin 50 is provided with a fixed valve seat 60 whose outer periphery is fixed to the inside of the piston rod 20, the left pressure chamber 42 and the outer periphery of the fixed valve seat 60 and Grooves 62 and 64 are formed in the circumferential direction at a point corresponding to the right pressure chamber 44, and the fixed valve seat 60 and the valve lift pin 50 are provided with a predetermined amount of gas therethrough. It is formed to have a clearance, and as shown in FIG. 5, a sealing ring 51 is installed at an outer circumference of the valve lift pin 50 so that the clearance is separated into a left clearance 52a and a right clearance 52b.

In the fixed valve seat 60, supply holes 66 and 68 are formed to communicate with the grooves 62 and 64 from the clearances 52a and 52b.

The supply holes 66 and 68 are staggered so as not to be connected to each other to connect the left play part 52a and the right groove 64, and connect the right play part 52b and the left groove 62. .

On the piston rod 20, through holes 26 and 28 are formed in each of the grooves 62 and 64 to the left pressure chamber 42 and the right pressure chamber 44.

As shown in FIG. 2, the connector 80 having the inlet hole 82 and the outlet hole 84 formed on one side of the fixed valve seat 60 is screwed to the piston rod 20, and the fixed valve seat 60 has a On the other side, the tube 90 is installed.

Steps are formed on both sides of the fixed valve seat 60, respectively, and flow valves 72 and 74 are installed on each step.

The right flow valve 74 is elastically supported by the spring 74a with respect to the contactor 80 so as to always be in contact with the fixed valve seat 60, and the outlet hole 84 of the connector 80 at the center thereof. And an exhaust hole 74b is formed.

The left flow valve 72 is elastically supported by the spring 72a with respect to the tube 90 so as to always be in contact with the fixed valve seat 60.

On the fixed valve seat (60), a communication hole (69) is formed to communicate with each other the point where the left flow valve (72) and the right flow valve (74) are installed, so that the pressure flowing into the inlet hole (820) is always left flow valve ( 72 and the right flow valve 74 is maintained.

Meanwhile, the washer 124 supporting the spring 120 is installed by the outer side of the tube 90 so that the one-way movement is limited through the fixing ring 122 on the manipulation rod 30.

The filter 84a is installed on the discharge hole 84 of the connector 80 to prevent foreign substances from penetrating through the discharge hole 84 which is always open to the outside.

A spacer 110 is installed between the tube 90 and the cap 100 to maintain a constant distance between the two members at all times. The cap 100, the spacer 110, the tube 90, and the fixed valve seat ( 60 is fixed by pressing the connector 80 after being sequentially inserted into the piston rod (20).

7 is an exploded perspective view of the main part of the present invention, wherein the operation rod 30 and the operation end 10 are fixed by bolts 14, and a washer, which is a neutral mechanism on the axis of the operation rod 30, 124 and 126 and the spring 120 is installed.

In order to always position the operating rod 30 in the neutral it is necessary to limit the one-way movement of the washer.

That is, one side washer 126 is moved to the left when the operation rod 30 moves in the left direction, and the other side washer 124 must be restricted when the operation rod moves in the right direction, and the operation rod 30 is returned to its neutral position. Will catch.

In the present invention, the left side movement of one side washer 126 is restricted through the cap 100 inserted into the piston rod 20.

Reference numerals 130 and 132 boot.

Referring to the operation of the present invention configured as described above are as follows.

First, in the state in which air pressure is introduced through the inflow hole 82 and supplied to the right flow valve 74, and is also supplied to the left flow valve 72 through the communication hole 9 formed in the fixed valve seat 60. When the shift lever 1 is operated in the a direction during the shift in the 3, 5 step directions (hereinafter referred to as a direction), the operation end 10 is moved in the a direction through the link means 2, and accordingly The manipulation rod 30 coupled to the upper end of the manipulation end 10 is moved to the left side.

At this time, since the tip of the operation end 10 has a predetermined clearance with the long hole 22 formed in the piston rod 20, the piston rod 20 does not move.

On the other hand, the movement of the operation rod 30 is accompanied by the compression of the spring 120, and at the same time to move the valve lift pin 50 to the left to compress the spring (72a) to push the left flow valve (72) do.

As the left flow valve 72 is pushed, the pressure already supplied through the inlet hole 82 is passed through the left play part 52a between the valve lift pin 50 and the fixed valve seat 60 as shown in FIG. It is supplied to the supply hole 66, and then flows into the right pressure chamber 44 through the through hole 28 to push the piston 21 to the left.

Accordingly, the piston rod 20 fixed to the piston 21 is moved to the left side, and thus the connection joint 3 is moved to rotate the first lever 4.

At this time, the interference generated between the connecting joint 3 and the first lever 4 is compensated by the seat 25 rising in the piston end 24, so that the first lever 4 is rotated without difficulty.

The rotation shaft 5 rotates according to the rotation of the first lever 4, and the rotation of the rotation shaft 5 is performed through the second lever 6, the shift jaw 7, the shift rail 8, and the shift fork ( 9) the shift operation is performed in the a direction.

Meanwhile, as the piston 21 moves, air existing in the left pressure chamber 4 is discharged to the right flow valve 74 through the through hole 26 and the supply hole 28, and formed in the right flow valve 74. It is discharged to the atmosphere through the exhaust hole 74b and the discharge hole 84.

On the other hand, when the shift lever 1 is operated in the b direction during the shift in the 2, 4 and reverse direction (hereinafter referred to as the b direction), the operation end 10 moves in the b direction through the link means 2. As a result, the operation rod 30 coupled to the upper end of the operation end 10 moves to the right side, and the tip of the operation end 10 is formed in the long hole 22 formed in the piston rod 20. The piston rod 20 does not move because it has a predetermined play.

Movement of the operation rod 30 is accompanied by compression of the spring 120, and at the same time to move the valve lift pin 50 to the right to push the right flow valve 74 while compressing the spring 74a. .

As the right flow valve 74 is pushed, the pressure already supplied through the inlet hole 82 is the right clearance 52b between the valve lift pin 50 and the fixed valve seat 60 as shown in FIG. It is supplied to the supply hole 68 through the), and is introduced into the left pressure chamber 42 through the through hole 26 to push the piston 21 to the right.

Therefore, the piston rod 20 fixed to the piston 21 is moved to the right, and accordingly the connection joint 3 is moved to rotate the first lever 4, at this time the connection joint (3) and Since the interference generated between the first lever 4 is compensated by the seat 25 is raised in the piston end 24, the first lever 4 rotates without difficulty.

The rotation shaft 5 rotates according to the rotation of the first lever 4, and the rotation of the rotation shaft 5 is performed through the second lever 6 and the shift jaw 7 and the shift rail 8, and the shift fork. Transfer to (9) is made to the shift operation in the b direction.

On the other hand, as the piston 21 moves, air existing in the right pressure chamber 44 is discharged to the left flow valve 72 through the through hole 28 and the supply hole 66, and is formed on the operation rod 30. The exhaust hole 74b and the exhaust hole 74b formed in the right flow valve 74 and the discharge hole 84 are sequentially passed through and discharged into the atmosphere.

The fitting of the operation end 10 and the piston rod 20 during the operation as described above is carried out in the long hole 22 in which the tip of the operation end 10 extends in the axial direction to the piston rod 20 as shown in FIG. And the operating rod 10 and the operating rod 30 can be moved in the axial direction by the play of the tip of the operating end 10 with respect to the long hole 22 with respect to the piston rod 20. However, the relative rotational movement of the operation end 10 and the piston rod 20 is regulated.

8 to 10 are shown in schematic cross-sectional view of the main part of the onset for understanding the operation description of the present invention.

Looking at the configuration through this, first the piston end 24 and the piston rod 20 is integrally welded, the cap 100, the spacer 110, the tube 90, the fixed valve inside the piston rod 20 After the seat 60 is cooked in sequence, it is pressurized and fixed with a screw of the connector 80 to form a whole bundle (hereinafter referred to as a piston rod bundle), and an operation end 10, an operation rod 30, and a valve lift pin. 50 is coupled to the yarn 14 or the like to be another bundle (hereinafter referred to as the operating rod bundle) is mounted inside the piston rod 20.

And the neutral mechanism is installed in the piston rod bundle and the operation rod bundle to ensure that the operation rod bundle always maintains neutral.

As a description of the neutral mechanism, assuming that there is no spring 120 in FIG. 8, the operating rod bundle is increased by the gaps b and b 'without being mounted at any one position. In order to prevent this, the neutral mechanism is installed in the present invention. By maintaining the gaps b and b 'to be constant, and also by adjusting the load of the spring 120 was able to adjust the shifting feeling felt by the driver.

That is, the shifting sense may be heavy or light, and depending on the vehicle type, there is a need to make it scary to prevent the gear from falling off during driving.

8, the clearance between the long hole 22 and the operation end 10 of the piston rod 20 is a, and the clearance between the side and left and right flow valves 72 and 74 of the valve lift pin 50 is b and b 'and the clearance between the side of the fixed valve seat 60 and the left and right flow valves 72 and 74 is c and c', the driver moves the shift lever 1 to the left direction (a direction). When shifting, the operating rod bundle moves through the link means 2 to the left and moves by the clearance a.

In this case, as shown in FIG. 9, the neutral spring 120 is compressed and the gap b disappears. Instead, the gap c is generated and the left flow valve 72 is opened.

That is, play a = clearance b + clearance a.

At this time, the load (force) applied to the operation rod 30 is a spring for supporting the left flow valve 72 and the force for moving the left flow valve 72 filled with the extrusion force and the inflow pressure of the neutral shift ring 120. It will be the combined force of the extrusion force of (72a), which is very small compared to the force that the driver shifts the actual transmission. (The actual transmission and power of the transmission are applied to the operating rod 30. The ratio of force is expressed by the force effect.)

And when the shift is completed, the shift lever (1) was pulled to release the operation rod 30 in place by the neutral spring 120, whereby the clearance c disappears and again the clearance b is generated and the left flow valve ( 72) is closed.

On the other hand, the shift lever 1 is shifted in the right direction (b direction) as shown in FIG. 10 and operates symmetrically with the left direction described above.

As described above, the transmission operation power supply apparatus according to the present invention can facilitate the assembly and disassembly of each part by inserting the cap, the spacer, the tube, the fixed valve seat in sequence, and can be fixed by a connector. By providing a separate connection joint at the end of the piston rod, it is possible to simplify the structure of the so-called detent mechanism that regulates the relative rotational movement of the operation end and the piston rod, as well as a spring that always presses the flow valve in the closing direction. By configuring the tension of the same to have the effect of improving the shifting feeling by making the shifting force of each stage the same.

Claims (5)

A housing forming a left pressure chamber 42 and a right pressure chamber 44 by a piston 21 provided in a piston rod 20 on which a piston end 24 interlocking with a connection joint 3 is fixed at one side ( 40 is provided, the fixed valve seat 60 and a pair of flow valves 72, 74 are installed in the piston rod 20, the inlet hole 82 and the discharge hole on one side of the piston rod 20 The connector 80 having the 84 formed therein is engaged, and the power is increased by operating the pair of flow valves 72 and 74 with the operation end 10 and the operation rod 30 interlocking with the shift lever 1. In order to output to the piston end 24, a pair of flow valves (72) (74) around one side outer circumference of the piston rod (20) in which the exhaust hole (74b) is opened radially at the inner point Install the actuated valve lift pin (50), and control the valve lift pin (5) in the fixed valve seat (60) in the left pressure chamber (42) or right pressure chamber (44) And a pair of supply holes (66) (68) for inducing pressure to the selected pressure chamber. According to claim 1, wherein the fixed valve seat (60) is formed to form a communication hole (69) which communicates with each other the point where the left flow valve (71) and the right flow valve (74) is installed to supply to the inlet hole (82) Make sure that the pressure is always filled on the left flow valve 72 and the right flow valve 74 side, and a sealing ring 51 is installed at the center of the outer periphery of the valve lift pin 50 to fix the seat valve 60 and the valve lift pin. The clearance 52 formed in the 50 is separated into the left clearance 52a and the right clearance 52b, and the supply holes 66 and 68 formed in the fixed valve seat 60 are alternately formed. A transmission apparatus for operating a transmission, characterized in that the left play portion 52a and the right pressure chamber 44 communicate with each other, and the right play portion 52b and the left pressure chamber 42 communicate with each other. The method of claim 1, wherein the cap 100 is provided at the end of the operation rod 30, the washer 124 is provided at the center of the operation rod 30, the middle of the washer 124 and the cap 100. A power supply device for operating a transmission, characterized in that the spring 120 is installed between the washers 126 installed in the step so that the operation rod 30 is always in a constant position at no load. 2. The cutting rod (12) according to claim 1, wherein cutouts (12) are formed at both ends of the operating end (10) passing through the formed long holes (22) of the piston rod (20) so that the operating end (10) with respect to the operating rod (30). Transmission operation power device, characterized in that the rotation is prevented. The method according to claim 1, wherein the ball seat (25) is installed in the piston end (24) so as to be able to lift and lower, and the lower end of the connection joint (3) formed in a ball shape pivotally rotatably inside the ball seat (25). Transmission apparatus for power operation, characterized in that.