Automobile shifting fork

Abstract

The utility model relates to an automobile shifting fork, which is characterized in that a shifting fork seat is symmetrically provided with pins, one end of the shifting fork seat is provided with a shifting fork shaft hole, the shifting fork seat is symmetrically provided with connecting ends, the connecting ends are provided with inserting holes, the inserting holes comprise a first inserting hole and a second inserting hole, the first inserting hole is axially arranged at the connecting ends, and the second inserting hole is vertically arranged at the first inserting hole; the pin is axially provided with a first plug block in plug-in fit with the first plug hole, the first plug block is vertically provided with a second plug block in plug-in fit with the second plug hole, the second plug block is fixedly connected with the pin, and the first plug hole and the second plug hole formed in the connecting end of the shifting fork seat are in plug-in fit with the first plug block and the second plug block arranged on the pin. When the automobile shifting fork is used for a long time and the pins are abraded, the first inserting blocks and the second inserting blocks arranged on the pins are pulled out and separated from the first inserting holes and the second inserting holes, new inserting pins are installed, the whole automobile shifting fork does not need to be replaced, and the replacement cost of the automobile shifting fork is greatly reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of mechanical devices, in particular to an automobile shift fork. Background Art

[0002] The car shift fork is an important part of the gearbox for shifting. The shift fork is connected to the gear lever. When the driver manipulates the gear lever, the shift fork will move, thereby changing the position of the gear to achieve the switch between different gears. By turning the middle gear wheel or other related gears, the shift fork changes the speed ratio between the input shaft and the output shaft to adapt to different driving conditions. In the forward gear, the shift fork acts on the synchronizer ring to achieve the engagement and separation of each forward gear. In the reverse gear, since the reverse gear usually has no synchronizer, the shift fork directly acts on the reverse gear to achieve the gear engagement.

[0003] The publication number is: CN106286820A, which discloses a reverse gear fork for an automobile. It belongs to the field of transmission parts design technology, including a shift fork and a shift fork shaft hole. The outer contour of the shift fork is arc-shaped, and its interior is also arc-shaped. The lower part is designed to be two parallel side surfaces on the left and right. The top of the shift fork is processed with a shift fork shaft hole, which is sleeved on the shift fork shaft. The shift fork can rotate around the shift fork shaft. When the automobile is switched to reverse gear, the shift fork is sleeved into the two end surfaces of the gear. The position of the gear can be changed by rotating the shift fork, so that the reverse gears are meshed with each other to achieve reverse gear. The reverse gear fork for an automobile disclosed in the present invention has good strength and installation stability of the shift fork, is convenient to take out molds, saves labor, has low processing cost, can meet transmission requirements, and is not easy to cause gear damage when shifting gears. The automobile shift fork pin, as an important connecting part with other components, has the problems of severe wear and large loss. After wear, the entire automobile shift fork needs to be replaced, and the replacement cost is high. Therefore, this technology still has a certain room for modification. Summary of the invention

[0004] The technical problem to be solved by the utility model is to provide a vehicle shift fork in view of the deficiencies of the above-mentioned prior art.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a vehicle shift fork, comprising a shift fork seat, the shift fork seat being symmetrically provided with pins, one end of the shift fork seat being provided with a shift fork shaft hole, characterized in that: the shift fork seat is symmetrically provided with a connecting end, the connecting end is provided with a plug-in hole, the plug-in hole comprises a first plug-in hole and a second plug-in hole, the first plug-in hole is axially provided at the connecting end, the second plug-in hole is vertically provided at the first plug-in hole, the pin is axially provided with a first plug-in block which is plug-matched with the first plug-in hole, the first plug-in block is vertically provided with a second plug-in block which is plug-matched with the second plug-in hole, and the second plug-in block is fixedly connected to the pin.

[0006] By adopting the above technical solution, the pin and the fork seat are separately arranged, and the first plug-in hole and the second plug-in hole arranged at the connecting end of the fork seat are plugged with the first plug-in block and the second plug-in block arranged on the pin. The first plug-in hole is axially arranged, and the second plug-in hole is perpendicular to the first plug-in hole, so that the first plug-in block and the second plug-in block can be stably plugged. When the pin of the automobile shift fork is worn out due to long-term use, the first plug-in block and the second plug-in block of the pin are pulled out and separated from the first plug-in hole and the second plug-in hole, and a new pin can be replaced without replacing the entire automobile shift fork, which greatly reduces the replacement cost of the automobile shift fork.

[0007] The above-mentioned automobile shift fork can be further configured as follows: a first arc surface is provided at both ends of the shift fork seat, and reinforcement plates are provided along the first arc surface at both ends of the shift fork seat, and the reinforcement plate is fixedly connected through a transverse plate provided on the shift fork seat, and the transverse plate is fixedly provided with a connecting block fixedly connected to the shift fork shaft hole, and the reinforcement plate is integrally formed with the transverse plate, and the transverse plate is integrally formed with the connecting block.

[0008] By adopting the above technical solution, the automobile fork seat on the market is basically plate-shaped, which is easy to break under high-intensity use. A reinforcement plate, a cross plate and a connecting block fixedly connected to the fork shaft hole are provided on the fork seat, which enhances the toughness of the fork seat and enables the automobile fork to withstand high-intensity use. The reinforcement plate, the cross plate and the connecting block are arranged as an integrated whole, which greatly reduces the production difficulty and cost.

[0009] The above-mentioned automobile shift fork can be further configured as follows: the shift fork shaft hole is cylindrical with openings at both ends, the fork seat is provided with a second arc surface at one end connected to the fork shaft hole, the connecting block is provided with a third arc surface at one end connected to the fork shaft hole, the second arc surface and the third arc surface have the same arc surface height, and the fork shaft hole is fixedly connected to the second arc surface and the third arc surface.

[0010] By adopting the above technical solution, the fork shaft hole is fixedly connected to the second arc surface and the third arc surface. The setting of the second arc surface and the third arc surface can adapt to the cylindrical fork shaft hole. The height of the second arc surface and the third arc surface can always make the fork shaft hole parallel to the second arc surface and the third arc surface to make the product more stable.

[0011] The above-mentioned automobile shift fork can be further configured as follows: the connecting end and the pin are both provided with a first fixing hole, a first fixing bolt is installed in the fixing hole, the first fixing hole and the first fixing bolt are both provided with threads, the connecting end is provided with a groove, the pin is provided with a wear-resistant block, the wear-resistant block is provided with a sleeve hole, the wear-resistant block is sleeved on the pin through the sleeve hole, and the wear-resistant block extends to the connecting end groove and abuts against the groove.

[0012] By adopting the above technical solution, a first fixing hole is provided at both the connecting end and the plug pin, which are fixedly connected to the first fixing hole by a first threaded fixing bolt, so as to further strengthen the connection between the connecting end and the plug pin. When the plug pin needs to be replaced, it is only necessary to twist out the first fixing bolt. A wear-resistant block is provided on the plug pin and the connecting end. The setting of the connecting end groove ensures that the volume of the connecting end and the plug pin will not be increased when the wear-resistant block is provided on the plug pin and the connecting end.

[0013] The above-mentioned automobile shift fork can be further configured as follows: a bearing is provided at the opening of the fork shaft hole, an abutment block for the bearing to abut is provided in the fork shaft hole, the bearing includes an upper shell, a lower shell, an inner ring, and a roller, a roller is embedded between the upper shell and the lower shell, one end of the roller is fixed by the inner ring, and the other end of the roller abuts against the inner wall of the fork shaft hole.

[0014] By adopting the above technical solution, the inner ring embeds the roller between the upper shell and the lower shell, so that the upper shell and the lower shell can rotate. The upper shell and the lower shell are sleeved on the fork shaft hole, and any end of the upper shell and the lower shell abuts against the abutment block, so that the connected automobile gear lever can be rotated in the bearing to reduce friction.

[0015] The above-mentioned automobile shift fork can be further configured as follows: the fork seat and the reinforcement plate are both provided with a second fixing hole, the fork seat and the reinforcement plate are connected by a second fixing bolt and the second fixing hole, and a fourth arc surface is provided between the connection ends.

[0016] By adopting the above technical solution, the fork seat and the reinforcement plate are detachably connected through the second fixing hole and the second fixing bolt. The reinforcement plate can be installed or removed according to the size of the gearbox. If the size of the gearbox is too small, the reinforcement plate can be removed. A fourth arc surface is provided between the connecting ends. The smoothness of the fourth arc surface design reduces the friction with other components during the gear shifting process, which helps to reduce wear and increase service life. The design of the fourth arc surface also takes into account the force transmission efficiency to ensure uniform force distribution during gear shifting and avoid unnecessary stress concentration, thereby protecting the entire transmission system.

[0017] The above-mentioned automobile shift fork can be further configured as follows: the shift fork seat and the pin are both made of high-silicon aluminum alloy, the wear-resistant block sleeved on the shift fork seat and the pin is made of composite plastic, and the surface of the wear-resistant block is coated with a protective coating.

[0018] With the above technical solution, high silicon aluminum alloy has become the mainstream material for modern automobile shift forks due to its light weight and high temperature resistance. The selection of this material helps to improve the overall performance of the car while reducing energy consumption and manufacturing costs. The wear-resistant block is a composite plastic, which has high fatigue resistance and corrosion resistance, making the product more durable.

[0019] The beneficial effects of the utility model are as follows: the first plug hole and the second plug hole arranged at the connecting end of the shift fork seat are plugged in cooperation with the first plug block and the second plug block arranged at the plug pin. When the plug pin of the automobile shift fork is worn out after long-term use, the first plug block and the second plug block arranged at the plug pin are pulled out and separated from the first plug hole and the second plug hole, and a new plug pin is replaced without replacing the entire automobile shift fork, thereby greatly reducing the replacement cost of the automobile shift fork. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the structure of the utility model;

[0021] Figure 2 This is an exploded diagram of the pin structure of the utility model;

[0022] Figure 3 This is an exploded view of the fork seat structure of the utility model;

[0023] Figure 4 This is a structural diagram of a bearing of the utility model;

[0024] Label notes: 1-fork seat, 2-pin, 3-fork shaft hole, 4-connecting end, 5-first arc surface, 6-reinforcement plate, 7-cross plate, 8-connecting block, 9-second arc surface, 10-third arc surface, 11-first fixing hole, 12-first fixing bolt, 13-wear-resistant block, 14-groove, 15-bearing, 16-abutment block, 17-second fixing hole, 18-second fixing bolt, 19-fourth arc surface, 201-first plug-in block, 202-second plug-in block, 401-first plug-in hole, 402-second plug-in hole, 1301-sleeve hole, 1501-upper shell, 1502-lower shell, 1503-roller, 1504-inner ring. DETAILED DESCRIPTION

[0025] This specific embodiment is merely an explanation of the present invention and is not a limitation of the present invention. After reading this specification, those skilled in the art may make non-creative modifications to the present embodiment as needed, but such modifications are protected by patent law as long as they are within the scope of the claims of the present invention.

[0026] like Figure 1-4 The utility model provides the following technical solution: a car shift fork ，The invention comprises a fork seat 1, the fork seat 1 is symmetrically provided with a pin 2, one end of the fork seat 1 is provided with a fork shaft hole 3, and is characterized in that: the fork seat 1 is symmetrically provided with a connection end 4, the connection end 4 is provided with a plug hole, the plug hole comprises a first plug hole 401 and a second plug hole 402, the first plug hole 401 is axially arranged at the connection end 4, the second plug hole 402 is vertically arranged at the first plug hole 401, the pin 2 is axially provided with a first plug block 201 plugged with the first plug hole 401, the first plug block is vertically provided with a second plug block 202 plugged with the second plug hole 402, the second plug block 202 is fixedly connected with the pin 2, the pin 2 is separately provided with the fork seat 1, the first plug hole 401 and the second plug hole 402 are provided at the connection end 4 of the fork seat 1, and the first plug hole 401 and the second plug hole 402 are provided at the connection end 4 of the fork seat 1. The hole 402 is plugged with the first plug block 201 and the second plug block 202 set with the pin 2. The first plug hole 401 is axially set, and the second plug hole 402 is perpendicular to the first plug hole 401, so that the first plug block 201 and the second plug block 202 can be stably plugged. When the pin 2 of the automobile shift fork is worn out after long-term use, the first plug block 201 and the second plug block 202 set with the pin 2 are pulled out and separated from the first plug hole 401 and the second plug hole 402, and a new plug pin 2 is replaced without replacing the entire automobile shift fork, which greatly reduces the replacement cost of the automobile shift fork. The first arc surface 5 is provided at both ends of the shift fork seat 1, and the reinforcing plate 6 is provided along the first arc surface 5 at both ends of the shift fork seat 1. The reinforcing plate 6 is provided through the horizontal plate 7 set by the shift fork seat 1. Fixed connection, the cross plate 7 is fixedly provided with a connecting block 8 and is fixedly connected with the fork shaft hole 3, the reinforcement plate 6 and the cross plate 7 are formed as one piece, and the cross plate 7 and the connecting block 8 are formed as one piece. The automobile fork seat 1 on the market is basically plate-shaped, which is easy to cause breakage under high-intensity use. The fork seat 1 is provided with a reinforcement plate 6, a cross plate 7 and a connecting block 8 fixedly connected with the fork shaft hole 3, which enhances the toughness of the fork seat 1 so that the automobile fork can withstand high-intensity use. The reinforcement plate 6, the cross plate 7, and the connecting block 8 are integrally arranged, which greatly reduces the production difficulty and cost. The fork shaft hole 3 is a cylindrical shape with openings at both ends. The fork seat 1 is connected to the fork shaft hole 3 at one end with a second arc surface 9, and the connecting block 8 is connected to the fork shaft hole 3 at one end with a third arc surface 10. The second arc surface 9 and the third arc surface 1 0 arc surface height is consistent, the fork shaft hole 3 is fixedly connected with the second arc surface 9 and the third arc surface 10, the fork shaft hole 3 is fixedly connected with the second arc surface 9 and the third arc surface 10, the second arc surface 9 and the third arc surface 10 are set to adapt to the cylindrical fork shaft hole 3, the second arc surface 9 and the third arc surface 10 The height can always make the fork shaft hole 3 parallel to the second arc surface 9 and the third arc surface 10 to make the product more stable, the connecting end 4 and the pin 2 are both provided with a first fixing hole 11, and a first fixing bolt 12 is installed in the fixing hole. The first fixing hole 11 and the first fixing bolt 12 are both provided with threads, the connecting end 4 is provided with a groove 14, the pin 2 is provided with a wear-resistant block 13, the wear-resistant block 13 is provided with a sleeve hole 1301, and the wear-resistant block 13 is sleeved on the pin 2 through the sleeve hole 1301,The wear-resistant block 13 extends to the groove 14 of the connection end 4 and abuts against the groove 14. The connection end 4 and the pin 2 are both provided with a first fixing hole 11, which is fixedly connected to the first fixing hole 11 through a first threaded fixing bolt 12, further strengthening the connection between the connection end 4 and the pin 2. When the pin 2 needs to be replaced, it is only necessary to twist out the first fixing bolt 12. The pin 2 and the connection end 4 are sleeved with a wear-resistant block 13. The setting of the groove 14 of the connection end 4 ensures that the volume of the connection end 4 and the pin 2 will not be increased when the wear-resistant block 13 is sleeved on the pin 2 and the connection end 4. A bearing 15 is provided at the opening of the fork shaft hole 3. An abutment block 16 for the bearing 15 to abut is provided in the fork shaft hole 3. The bearing 15 includes an upper shell 150 1. Lower shell 1502, inner ring 1504, roller 1503. Roller 1503 is embedded between upper shell 1501 and lower shell 1502. One end of roller 1503 is fixed by inner ring 1504, and the other end of roller 1503 abuts against the inner wall of fork shaft hole 3. Inner ring 1504 embeds roller 1503 between upper shell 1501 and lower shell 1502, so that upper shell 1501 and lower shell 1502 can rotate. Upper shell 1501 and lower shell 1502 are sleeved in fork shaft hole 3. Any end of upper shell 1501 and lower shell 1502 abuts against abutment block 16, so that the connected automobile gear lever can be rotated and set in bearing 15 to reduce friction.

[0027] like Figure 3-4 The fork of an automobile shown in the figure has a second fixing hole 17 on both the fork seat 1 and the reinforcing plate 6. The fork seat 1 and the reinforcing plate 6 are connected by a second fixing bolt 18 and the second fixing hole 17. A fourth arc surface 19 is provided between the connecting ends 4. The fork seat 1 and the reinforcing plate 6 are detachably connected through the second fixing hole 17 and the second fixing bolt 18. The reinforcing plate 6 can be installed or removed according to the size of the gearbox. If the size of the gearbox is too small, the reinforcing plate 6 can be removed. A fourth arc surface 19 is provided between the connecting ends 4. The smoothness of the fourth arc surface 19 reduces the friction with other components during the gear shifting process, which helps to reduce wear and increase the service life. The design of the fourth arc surface 19 also takes into account the force transmission efficiency to ensure that the force is evenly distributed during gear shifting to avoid unnecessary stress concentration, thereby protecting the entire transmission system. The fork seat 1 and the pin 2 are both high-silicon aluminum alloys. The wear-resistant block 13 sleeved on the fork seat 1 and the pin 2 is a composite plastic. The surface of the wear-resistant block 13 is coated with a protective coating. High-silicon aluminum alloy has become the mainstream material for modern automobile shift forks due to its light weight and high temperature resistance. The selection of this material helps to improve the overall performance of the car while reducing energy consumption and manufacturing costs. The wear-resistant block 13 is a composite plastic. The composite plastic has high fatigue resistance and corrosion resistance, making the product more durable.

[0028] Beneficial effects of the utility model: the first plug hole 401 and the second plug hole 402 provided at the connection end 4 of the fork seat 1 are plugged with the first plug block 201 and the second plug block 202 provided at the pin 2. When the automobile shift fork is used for a long time and the pin 2 is worn, the first plug block 201 and the second plug block 202 provided at the pin 2 are pulled out and separated from the first plug hole 401 and the second plug hole 402, and a new pin 2 is replaced without replacing the entire automobile shift fork, thereby greatly reducing the replacement cost of the automobile shift fork.

Claims

1. An automobile shift fork, comprising a shift fork seat, wherein the shift fork seat is symmetrically provided with pins, and one end of the shift fork seat is provided with a shift fork shaft hole, Features: The fork seat is symmetrically provided with a connecting end, and the connecting end is provided with a plug-in hole, and the plug-in hole includes a first plug-in hole and a second plug-in hole, the first plug-in hole is axially arranged at the connecting end, and the second plug-in hole is vertically arranged at the first plug-in hole, and the pin is axially provided with a first plug-in block that is plug-matched with the first plug-in hole, and the first plug-in block is vertically provided with a second plug-in block that is plug-matched with the second plug-in hole, and the second plug-in block is fixedly connected to the pin.

2. The automobile shift fork according to claim 1, Features: A first arc surface is provided at both ends of the fork seat, and reinforcement plates are provided at both ends of the fork seat along the first arc surface. The reinforcement plate is fixedly connected through a transverse plate provided on the fork seat, and a connecting block is fixedly provided on the transverse plate and fixedly connected with the fork shaft hole. The reinforcement plate and the transverse plate are integrally formed, and the transverse plate and the connecting block are integrally formed.

3. The automobile shift fork according to claim 2, Features: The fork shaft hole is cylindrical with openings at both ends, the fork seat is provided with a second arc surface at one end connected to the fork shaft hole, the connecting block is provided with a third arc surface at one end connected to the fork shaft hole, the second arc surface and the third arc surface have the same arc surface height, and the fork shaft hole is fixedly connected to the second arc surface and the third arc surface.

4. The automobile shift fork according to claim 3, Features: The connecting end and the plug pin are both provided with a first fixing hole, a first fixing bolt is installed in the fixing hole, the first fixing hole and the first fixing bolt are both provided with threads, the connecting end is provided with a groove, the plug pin is provided with a wear-resistant block, the wear-resistant block is provided with a sleeve hole, the wear-resistant block is sleeved on the plug pin through the sleeve hole, and the wear-resistant block extends to the groove of the connecting end and abuts against the groove.

5. The automobile shift fork according to claim 1, Features: A bearing is provided at the opening of the fork shaft hole, and an abutment block for the bearing to abut is provided in the fork shaft hole. The bearing includes an upper shell, a lower shell, an inner ring, and a roller. A roller is embedded between the upper shell and the lower shell, and one end of the roller is fixed by the inner ring, and the other end of the roller abuts against the inner wall of the fork shaft hole.

6. The automobile shift fork according to claim 2, Features: The fork seat and the reinforcement plate are both provided with a second fixing hole, the fork seat and the reinforcement plate are connected to each other by a second fixing bolt and the second fixing hole, and a fourth arc surface is provided between the connection ends.

7. The automobile shift fork according to claim 4, Features: The fork seat and the pins are both made of high-silicon aluminum alloy, the wear-resistant block is made of composite plastic, and the surface of the wear-resistant block is coated with a protective coating.

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