KR200237069Y1 - Belt analysis tool of continuously Variable Transmission for vehicle - Google Patents

Abstract

The present invention provides a tool for disassembling a belt for a continuously variable transmission for a vehicle that provides ease of operation by providing a dedicated tool that can easily dismantle the belt and prevents damage to the belt and pulley. As; The decomposition tool 100 is; A press cam 102 screwed into the shaft hole 101 of the secondary pulley 22 of the continuously variable transmission 10; A pull rig 103 disposed at an edge of the variable pulley 26 of the secondary pulley 22; A bearing press 104 placed above the center of the pull rib 103; A base handle 105 screwed with the press cam 102 above the bearing press 104; The bar-type press cam (102) includes a screw (110) formed in its entirety to facilitate engagement with the shaft hole (101) and the base handle (105); Upper and lower ends of the press cam 102 include a chamfer 113 and a flange 112 formed for a stopper role when combined with tool use; The pull rig 103 is one side is open and the flange 121 is provided with a protruding annulus 120 below; Bridges 122 and 123 protruding upward of the flange 121; The bridge (122, 123) is characterized in that the press cam 102 is connected to the contact plate 125 having an entrance hole 124 that can enter and exit.

Description

Belt dismantling tool for continuously variable transmission for automobiles {Belt analysis tool of continuously Variable Transmission for vehicle}

The present invention relates to a belt disassembly tool for a continuously variable transmission of a vehicle, and more particularly, to a tool for facilitating disassembly and assembly of a belt connected between a primary and secondary pulley phase of a continuously variable transmission.

The transmission of the car is divided into a continuously variable transmission and a stepped transmission, and the stepped transmission has a power that increases in proportion to the increase in engine rotation, and the torque characteristic is small at low speeds and exhibits maximum torque in the medium speed range. By using the multi-stage transmission, the driving ratio is secured by changing the reduction ratio according to the driving situation.

In the case of the stepped transmission as described above, there is an inconvenience in that the driver needs to switch from the low stage to the high stage and the high stage to the low stage by directly determining the operation and shifting time of the clutch according to the stepwise situation.

In case of automatic transmission, even though torque is obtained by using torque converter, it has the same stepwise driving characteristics as manual. In case of torque converter, it has the disadvantage that it is significantly lower than manual transmission in terms of acceleration or fuel economy due to slip torque. There is a problem such as a significant shift shock remaining in the.

Developed continuously to overcome the disadvantages of the manual transmission and the automatic transmission as described above is a continuously variable transmission (continuously variable transmission).

The continuously variable transmission is designed to continuously change the speed ratio, so that it can be smoothly and high-performance by using only the highest output of the engine, low fuel efficiency can be performed in urban running, and there is no shift time or shift speed, so that no shock is generated. It is close to its purpose and has the characteristics to achieve it.

Such a continuously variable transmission;

The belt and pulley are combined to be divided into belt type and traction drive type. A typical example of the belt type continuously variable transmission is as follows.

The continuously variable transmission of the belt type is composed of a clutch mechanism receiving engine power, a forward and reverse switching mechanism, and a belt pulley mechanism for continuously variable transmission.

A primary pulley fixed on the input shaft and a secondary pulley fixed on the output shaft, each pulley being fixed on the input shaft and the output shaft and fixed with the input shaft and the output shaft to rotate together;

It is provided with a variable pulley for varying the width of the pulley while sliding in the axial direction of the input shaft and the output shaft.

The variable pulley on the input shaft is controlled by a transmission control unit (TCU) that is synchronized with the ECU to receive external signals such as engine speed, vehicle speed, position of the shift lever, and opening degree of the throttle valve. Is made by.

When the variable pulley of the primary pulley is changed by the variable means, the variable pulley on the output shaft is also variable corresponding to the variable width of the variable pulley on the input shaft by the same or different variable means.

When the width of the primary pulley is widened by the variable pulleys, the width of the secondary pulley is narrowed, so that the low speed shift is made. It happens naturally.

The variable means for varying the variable pulley of the primary pulley is a variable pulley on the input shaft using a DC motor and the variable pulley on the output shaft corresponding to the variable width of the variable pulley on the input shaft using a torque cam and a spring. It can be changed by the pressure of spring and belt.

The continuously variable transmission 10 will be described in detail with reference to the drawings of FIGS. 1 to 2 as follows.

It is located on one side of the case 11 is connected to the electromagnetic powder clutch 13 and the electromagnetic powder clutch 13 to receive the power of the engine 12, the forward and reverse switching mechanism 14 is made of a plurality of gear body, The input shaft 15 and the floating force transmission mechanism 16 connected to the forward and backward switching mechanism 14, the final reducer 18 and the differential connected to the output shaft 17 and the floating force transmission mechanism 16. Gear 19 and the like.

The input shaft 15 and the output shaft 17 are provided with a primary pulley 21 and a secondary pulley 22;

Each of the pulleys 21 and 22 may vary in width while sliding in the axial directions of the fixed pulleys 23 and 24 and the input shaft 15 and the output shaft 17 fixed to the input shaft 15 and the output shaft 17. It consists of variable pulleys 25 and 26.

A belt 27 is connected to the pulleys 21 and 22 to transmit the power of the input shaft 15 to the output shaft 17, and the power of the tire 30 is continuously shifted according to the width of the pulleys 21 and 22 that are variable. Final delivery.

The variable pulley 25 on the input shaft 15 has a driven gear 34 through a drive gear 32 and a plurality of intermediate gears 33 fixed to the shaft of the desciter 31 installed on the case 11. Is delivered to.

On the inside of the driven gear 34 and the rear of the input shaft 15, the slide 35 fixed on the case 11 forms a screw 36 so that the driven gear ( 34 moves in the front and rear directions of the slide 35 so that the variable pulley 25 is slid in the axial direction of the input shaft 15 to vary the width.

The variable force pulley 26 on the output shaft 17 is interposed between the torque cam 40 and the spring 41, the force of the spring 41 and the pressing force of the belt 27 according to the width of the primary pulley 21 is variable. As a result, the width is varied corresponding to the primary pulley 21.

The forward and backward switching mechanism 14 is connected to the selector lever provided in the driver's seat to select forward and backward,

In the case of the floating force transmission mechanism 16, the two-way running clutch is configured to drive the engine directly through the output shaft 17 and the final reducer 18 without transmitting the power of the engine to the input shaft 15 during initial start-up. After the oscillation, it is configured to be transmitted to the tire via the input shaft 15 and the output shaft 17 and the final reducer 18.

The decipher motor 31 and the clutch are controlled by a transmission control unit (TCU) that is synchronized with the ECU to receive external signals such as engine speed, vehicle speed, shift lever position, and opening degree of the throttle valve. It is a controlled configuration.

When the belt is in contact with the belt and the pulley in the stepless speed change process and the durability decreases due to heat generation due to friction and the like, there is a need to disassemble and replace or maintain the belt.

In the case of disassembling and assembling the belt connected between the primary and secondary pulley phases as described above, conventionally, since a separate dedicated tool is not provided, the worker disassembles and assembles the belt depending on manual labor. .

In this regard, in the process of disassembling and assembling the belt, the belt and pulley may be damaged, as well as the overall disassembly and assembly work may be delayed.

In particular, if there is damage to the pulley or the belt during the disassembly and assembly of the belt, the characteristics of the belt type continuously variable transmission are continuously affected by friction between the pulley and the belt, which significantly affects the coefficient of friction, which significantly affects the quality and durability of the continuously variable transmission. There were several problems, including Mitch.

Therefore, the present invention has been devised to solve the above problems, and provides an easy tool by providing a dedicated tool that can facilitate the disassembly of the belt, and can contribute to quality stability by preventing damage to the belt and pulley. The purpose is to make it work.

1 is a block diagram of a control system of a continuously variable transmission for explaining the present invention.

Figure 2 is a cross-sectional configuration of the continuously variable transmission for explaining the present invention.

Figure 3 is an exploded perspective view of the belt disassembly tool applied to the technology of the present invention.

Figure 4 is a cross-sectional view of the mounting state of the belt disassembly tool applied the technology of the present invention.

Figure 5 is a cross-sectional view of the pulley spaced apart using the belt disassembly tool applied technology of the present invention.

* Description of the symbols used in the main parts of the drawings *

10; Continuously variable transmission

27; Belt

100; Disassembly Tool

102; Presscam

103; Pool Rig

104; Bearing press

105; Base handle

Hereinafter, with reference to the accompanying drawings will be described the configuration and operation of the present invention for achieving the above object.

1 is a block diagram of a control system of a continuously variable transmission for explaining the present invention, Figure 2 is a cross-sectional configuration diagram of a continuously variable transmission for explaining the present invention, Figure 3 is an exploded perspective view of the belt disassembly tool applied to the technology of the present invention, 4 is a cross-sectional view of the mounting state of the belt disassembly tool to which the technique of the present invention is applied, and FIG. 5 is a cross-sectional view of the pulley spaced apart using the belt disassembly tool to which the technique of the present invention is applied.

A primary pulley 21 and a secondary pulley 22 having a pair of variable inner diameters, and a belt 27 that is connected and connected between the primary pulley 21 and the secondary pulley 22, and the primary pulley This is performed by adjusting the relative spacing of the variable pulley 25 separated by the de-motor 31 for varying the connection inner diameter of (21).

The tension of the belt 27 is continuously maintained by varying the connection inner diameter of the secondary pulley 22 by the pressing force of the torque cam 40 and the spring 41 in response to the change of the inner diameter of the primary pulley 21. The continuously variable transmission 10 is configured to allow this to be applied so as to continuously change the power of the engine.

The desci motor 31 and the electromagnetic powder clutch 13 receive a external control signal such as engine speed, vehicle speed, shift lever position, opening degree of the throttle valve, and the like. TCU) is a configuration controlled.

The present invention is characterized in that it provides a disassembly tool 100 that can facilitate the disassembly of the belt 27 connected between the primary pulley 21 and the secondary pulley 22 of the continuously variable transmission (10). do.

The decomposition tool 100 is;

The pull rig 103 and the pull rig placed on the edge of the press cam 102 and the variable pulley 26 of the secondary pulley 22 screwed to the shaft hole 101 of the secondary pulley 22 of the continuously variable transmission 10. Consists of a bearing press 104 placed above the center of the 103 and a base handle 105 screwed with the press cam 102 above the bearing press 104.

The press cam 102 is a bar type to form a screw 110 over the entire to facilitate the coupling of the base 111 and the screw 111 formed in the secondary pulley 22 shaft hole 101. .

The lower end of the press cam 102 to form a flange 112 to act as a stopper when combined with the shaft hole 101, the upper end is preferably to have a chamfer 113 to use a tool.

The pull jig 103 is provided with a flange 121 having a protruding annulus 120 so that one side is open and the lower side is connected to the inner side of the variable pulley 26 of the secondary pulley 22.

On the flange 121, the bridges 122 and 123 protrude upward in a multi-direction to concentrate in the direction of the center of the flange 121, and the contact plate having an access hole 124 through which the press cam 102 enters and exits. (125) pipe connection.

The bearing press 104 placed on the contact plate 125 of the pull rig 103 is formed by a general bearing type having a high height having an access hole 130 through which the press cam 102 can enter and exit. It is possible to minimize the frictional force that may occur between the 103 and the base handle 105.

The base handle 105 is rotated by protruding to both sides of the body 141 and the body 141 and the body formed with a screw hole 140 that can be combined with the screw 110 formed in the press cam 102 in the center Consists of a handle 142 to provide ease of use.

Looking at the working relationship of the decomposition tool 100 of the present invention is configured as described above are as follows.

The lower end of the press cam 102 is screwed into the secondary pulley 22 shaft hole 101 so that the upper end of the shaft and the flange 112 of the press cam 102 are closely connected.

In this case, using a tool such as a spanner to the chamfer 113 formed at the upper end of the press cam 102 can facilitate the coupling.

When the assembly of the press cam 102 is completed, the pull rig 103 is placed on the variable pulley 26 of the secondary pulley 22.

At this time, the press cam 102 is protruded into the access hole 124 formed in the contact plate 125 of the pull rig 103, and the protruding annulus 120 protruding downward from the flange 121 of the pull rig 103. It is connected to the edge of the variable pulley 26.

The bearing press 104 is placed in the contact plate 125 of the pull rig 103 so that the press cam 102 passes through the entrance hole 130, and finally, the base handle 105 is placed in the press cam 102. Screwed to the upper surface of the bearing press 104 to complete the preparation for disassembly.

When the preparation for disassembly is completed as described above, tighten the base handle 105 to descend.

The frictional resistance generated when the base handle 105 is rotated is alleviated by the bearing press 104 positioned between the base handle 105 and the contact plate 125 of the pull rib 103.

If the base handle 105 is rotated and lowered as described above, the pull jig 103 descends, and the variable pulley 26 of the secondary pulley 22 pressed by the pull jig 103 has a spring interposed thereunder ( Overcoming the reaction force of the 41, it is lowered while contracting the spring 41.

As described above, when the variable pulley 26 of the secondary pulley 22 is lowered, the gap between the variable pulley and the fixed pulley 24 is opened so that the belt 27 which is in a tense state is relaxed to the center direction of the pulley 22 axis. Since the belt 27 can be easily disassembled.

After the disassembly of the belt 27 is completed as described above, the disassembly tool 100 may be removed (disassembled) in reverse order.

The present invention as described above has the effect of providing ease of operation by providing a dedicated tool that can facilitate the disassembly of the belt, contribute to quality stability by preventing damage to the belt and pulley.

Claims (1)

In constructing the disassembly tool 100 which is connected between the primary pulley 21 and the secondary pulley 22 of the vehicle continuously variable transmission 10 can disassemble the belt 27 for transmitting power; The decomposition tool 100 is; A press cam 102 screwed into the shaft hole 101 of the secondary pulley 22 of the continuously variable transmission 10; A pull rig 103 disposed at an edge of the variable pulley 26 of the secondary pulley 22; A bearing press 104 placed above the center of the pull rib 103; A base handle 105 screwed with the press cam 102 above the bearing press 104; The bar-type press cam (102) includes a screw (110) formed in its entirety to facilitate engagement with the shaft hole (101) and the base handle (105); Upper and lower ends of the press cam 102 include a chamfer 113 and a flange 112 formed for a stopper role when combined with tool use; The pull rig 103 is one side is open and the flange 121 is provided with a protruding annulus 120 below; Bridges 122 and 123 protruding upward of the flange 121; The bridge (122, 123) belt disassembly tool for a continuously variable transmission of the vehicle, characterized in that configured in connection with the contact plate (125) having an entrance hole (124) that the press cam 102 can enter and exit at the center.