Reversible transmission top cover assembly

Abstract

An end face plug piece is arranged at one end of a shell, the other end of the shell is connected with a gear shifting arm, switch holes are formed in the two sides of the shell and connected with a neutral gear switch, fixing holes are formed in the edges of the switch holes, a positioning nut is embedded into a groove in a gear shifting rod through the fixing holes, the gear shifting arm is in a Z shape, and the gear shifting arm is connected with the gear shifting arm. A fixing base is arranged on the shell, a gear selecting handle is connected to the upper portion of the fixing base, a gear selecting arm is connected to the lower portion of the fixing base, the gear selecting handle drives the gear selecting arm to move, the gear selecting arm drives the gear shifting shaft to drive the gear shifting rod to move, one end of the gear selecting arm is in a disc shape, and the other end of the gear selecting arm is a relatively small fan-shaped disc. According to the Z-shaped gear shifting arm, the gear shifting arm is in a Z shape, and the structural stability is higher.

Description

Technical Field

[0001] The utility model relates to the technical field of transmission top covers, in particular to a reversible transmission top cover assembly. Background Art

[0002] The transmission top cover assembly is a complex and important field. According to the vehicle layout requirements, the shift arm of the transmission shift top cover can be divided into right-mounted and left-mounted. The traditional shift top cover and its blank are special parts. When manufacturing, the blank must be cast and machined and assembled according to two kinds of parts. Research and invention of a universal shift top cover, which is universal for casting blanks and machining, and the shift arm can be left-mounted or right-mounted according to needs during installation, reducing the variety of top cover parts and bringing many conveniences to production, manufacturing and management, and having significant effects on energy conservation, emission reduction, environmental protection, low carbon, cost reduction and efficiency improvement. The present invention covers the left-right universal structure of the shift arm of the shift top cover of the automotive mechanical transmission assembly.

[0003] In the prior art, in a shift and select top cover assembly for a light commercial vehicle transmission disclosed in Patent No. CN111692328A, a shift and select top cover assembly for a light commercial vehicle transmission is provided, belonging to the technical field of transmissions, including a housing, a select lever, a select shaft, a select rocker arm, a shift lever, a spring seat ring, a return spring, a shift shaft, a shift rocker arm, a shift damping spring seat, a reverse gear feel pin, a reverse gear feel spring and a plug. Utility Model Content

[0004] The purpose of the utility model is to provide a reversible transmission top cover assembly that is convenient to disassemble, has a simple structure and strong stability.

[0005] To achieve the above purpose, the utility model provides the following technical solution: A reversible transmission top cover assembly, one end of the shell is provided with an end face gasket; the other end of the housing is connected to the shift arm; both sides of the housing are provided with switch holes for connecting a neutral switch; there are fixing holes beside the switch holes; a positioning nut is embedded into the groove on the shift lever through the fixing holes.

[0006] Preferably, a dust cover is provided between the shift arm and the housing, and the shift arm is in a Z shape.

[0007] Preferably, a fixing seat is provided on the housing, a select handle is connected above the fixing seat, and a select lever is connected below the fixing seat.

[0008] Preferably, the select handle drives the select lever to move; the select lever drives the shift shaft to drive the shift lever to move.

[0009] Preferably, one end of the select lever is in a disc shape and the other end is a relatively smaller sector disc.

[0010] Preferably, a return spring is provided on the shift lever.

[0011] Preferably, the neutral switch is connected to the shift lever through a switch pin.

[0012] Preferably, the neutral switch is connected to the switch hole through a fastening bolt.

[0013] Compared with the prior art, the beneficial effects of the present utility model are as follows: the present utility model fixes the shift shaft through a positioning nut, and the left and right side shift arms can be interchanged by removing the nut; the shift arm of the present utility model is Z-shaped, and the structural stability is stronger. Description of the Drawings

[0014] Figure 1 It is a schematic diagram of the main body structure of the present utility model.

[0015] Figure 2 It is a bottom view of the structure of the present utility model.

[0016] Figure 3 It is a sectional view A-A of the structure of the present utility model.

[0017] In the figure: 1, shift arm; 2, dust cover; 3, housing; 4, fastening bolt; 5, neutral switch; 6, positioning nut; 7, fixing hole; 8, shift selector handle; 9, fixing seat; 10, end face gasket; 11, shift selector arm; 12, shift lever; 13, return spring; 14, switch pin; 15, groove; 16, switch hole; 17, shift shaft. Detailed Description of the Preferred Embodiment

[0018] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments.

[0019] Next, the embodiments of the present utility model will be described in detail. The housing 3 is designed to accommodate and protect the internal components of the transmission. One end of the housing 3 is specially designed with an end face gasket 10. The main function of this gasket is to seal one end of the housing, forming a sealed environment to prevent dust, moisture and other impurities from entering the interior of the housing and protecting the internal mechanical components from the influence of the external environment. The end face gasket 10 is usually made of wear-resistant material to ensure its good sealing performance during long-term use.

[0020] The other end of the housing 3 is connected to the shift arm 1, which is a key component for realizing the reverse gear of the transmission. It is connected to the shift lever operated by the driver, transmitting the driver's shifting intention to the interior of the transmission, thereby achieving gear shifting. The design of the shift arm 1 needs to consider the flexibility and durability of the operation to ensure accurate shifting actions can still be maintained under frequent operations. In addition, the design of the shift arm 1 allows it to be placed either on the left or on the right, and this flexibility enables the assembly to adapt to different installation requirements.

[0021] Fixing holes 7 are provided at the edges of each switch hole 16, and these fixing holes are used to install the positioning nut 6. The positioning nut 6 is a fastener that is embedded into the groove 15 on the shift lever 13 through the fixing hole 7. The shift lever 13 is the component directly operated by the driver, and it is connected to the shift arm 1 to transmit the driver's operation intention to the interior of the transmission. A return spring 12 is provided on the shift lever 13. This is an elastic component used to automatically return the shift lever to the initial position after a shifting operation. The design of the return spring 12 helps reduce the driver's operation force, improve the comfort of shifting, and ensure that the transmission can correctly return to the predetermined gear.

[0022] In this embodiment, the neutral switch 5 is connected to the shift lever 13 through a switch pin 14. The switch pin 14 can be inserted into a specific hole on the shift lever 13, thereby fixing the switch 5 in place.

[0023] To ensure the stability of the neutral switch 5 during use, it is fixed to the switch hole 16 of the housing 3 through a fastening bolt 4. The fastening bolt 4 is a common fastener that matches the threads in the switch hole 16 through its threads, thereby firmly fixing the neutral switch 5 in position. This fastening method not only provides strong fixing force but also allows for quick disassembly and reinstallation when needed. When it is necessary to reverse the shift arm, the user only needs to use a tool to remove the fastening bolt 4, and then can easily move the neutral switch 5 from one end to the other end of the housing 3 to achieve the reverse operation.

[0024] The whole unit of the present utility model can be easily disassembled by removing the positioning nut 6, thereby achieving the reverse of the left and right sides. The positioning nut 6 is usually a circular component with internal threads, and it is embedded into the groove 15 on the shift lever 13 through the fixing hole 7. When it is necessary to perform reverse or maintenance, the user only needs to simply unscrew the positioning nut 6, and this action will release the fixation of the shift lever 13, enabling the entire shifting mechanism to be easily removed from the housing 3.

[0025] Once the positioning nut 6 is removed, the user can then remove the end face plug 10. The end face plug 10 is a sealing component at one end of the housing 3, and it is tightly connected to the housing 3 through a mating surface to ensure the sealing of the internal components. The removal of the end face plug 10 is usually very simple because it is typically fixed to the housing 3 by several fixing screws or snap fasteners.

[0026] After the end face plug 10 is removed, the shift lever 13 can also be taken out. The shift lever 13 is a component directly operated by the user, and it is connected to the housing 3 through the fixing of the positioning nut 6 and the end face plug 10. The removal process of the shift lever 13 usually involves removing several fixing components, such as the return spring 12 and other accessories on the shift lever. Once these components are removed, the shift arm 1 can be moved from one side to the other side. The design of the shift arm 1 allows it to move flexibly inside the housing 3.

[0027] In this embodiment, the dust cover 2 between the shift arm 1 and the housing 3 prevents dust and impurities from entering the interior of the transmission, thereby protecting the precision components of the transmission from contamination and damage. The dust cover 2 is usually made of durable rubber or plastic materials, which are not only durable but also have good sealing performance. The design of the dust cover 2 enables it to fit tightly between the shift arm 1 and the housing 3, forming a sealed space that effectively blocks external dust and impurities.

[0028] The Z-shaped design of the shift arm 1 not only improves the flexibility and accuracy of shifting but also enhances the structural strength and stability of the shift arm itself. First, the Z-shaped design enables the shift arm 1 to move more smoothly during operation. The shift arm 1 interacts with other components of the transmission in a more natural and smooth manner during movement. Each part of the shift arm 1 can move more smoothly along a predetermined path, thereby reducing friction and resistance during the shifting process. Second, the Z-shaped design helps to improve the strength and stability of the shift arm 1. This shape increases the cross-sectional area of the shift arm 1, improving its ability to withstand forces. When subjected to forces, the Z-shaped geometric structure can more effectively disperse and withstand the forces, reducing the risk of deformation or damage caused by uneven force distribution.

[0029] A fixed seat 9 is provided on the housing 3. The design of the fixed seat 9 enables it to be firmly mounted on the housing 3, providing stable support for the gear selection mechanism. Above the fixed seat 9 is connected a gear selection handle 8, which is a component directly operated by the user and is used to implement the shifting operation. The design of the gear selection handle 8 usually takes into account ergonomics, making it easy to hold and operate. Through the operation of the gear selection handle 8, the user can easily select the desired gear.

[0030] The shift lever 11 connected to the lower part of the fixed seat 9 is the core component for realizing the shifting operation. Its delicate design allows it to be seamlessly connected to the shifting mechanism inside the transmission, ensuring the smoothness and precision of the shifting process. Through the precise movement of the shift lever 11, the shifting mechanism inside the transmission can be effectively driven, thus realizing the rapid shifting of gears. This design not only improves the shifting efficiency but also makes the driving experience smoother. The shift lever 11 is usually made of high-strength materials. This material selection is to ensure that even under frequent operations and extreme usage conditions, the shift lever 11 can maintain its structural stability and durability, reduce the possibility of wear and failure, and extend its service life. In addition, the design of the shift lever 11 also takes into account the comfort and convenience of operation, enabling the driver to feel a more relaxed and intuitive experience when performing the shifting operation. This attention to detail and insistence on quality make the shift lever 11 an indispensable key component in the transmission system.

[0031] In this embodiment, the drive design of the shifting mechanism is the core for realizing the shifting function of the transmission. The design of the shift knob 8 enables it to directly drive the shift lever 11 to move. This design usually involves a mechanical connection, such as through threads, pins or other forms of mechanical coupling, so that the rotation or linear movement of the shift knob 8 can be directly transmitted to the shift lever 11. The shift knob 8 is usually located at a position easy for the user to operate, and its design takes into account ergonomics to ensure the comfort and accuracy of the user during operation.

[0032] The design of the shift lever 11 further enhances this drive mechanism. One end of the shift lever 11 is connected to the shift knob 8, and the other end is connected to the shift shaft 17. When the shift knob 8 is operated, the shift lever 11 moves accordingly, and then drives the shift shaft 17. The shift shaft 17 is a key component inside the transmission. It controls the position of the shift rod 13 through its movement, thus realizing the shifting of the transmission.

[0033] The unique shape design of the shift lever 11 is crucial for improving the stability and accuracy of shifting. One end is in a disc shape, which increases the contact area with the shift knob 8, thus providing greater torque transmission capacity and ensuring the smoothness and reliability of the shifting operation. The other end is a relatively small sector-shaped disc, which helps to make the connection with the shift shaft 17 more precise. The shape with one side cut off may also help to guide the shift lever 11 to move along a specific path, further improving the accuracy of the shifting operation.

[0034] This design also helps to reduce the swing or offset of the shift lever 11 during operation, because the larger disc shape provides a greater moment of inertia, making the shift lever 11 more stable when subjected to forces. At the same time, the connection of the other end of the smaller disc shape to the shift shaft 17 may also involve some precise fits, such as gears, racks or other forms of meshing, which can ensure that the movement of the shift lever 11 is transmitted to the shift shaft 17.

[0035] In addition, the design of the shift lever 11 may also take into account the material selection and heat treatment process to ensure that it has sufficient strength and wear resistance during long-term use. High-quality materials and fine processing techniques help to improve the durability and reliability of the shift lever 11, thus extending the service life of the transmission.

[0036] In this embodiment, a return spring 12 is provided on the shift lever 13, which is a key design element for ensuring that the shift lever can automatically return to the initial position after a shift operation. The return spring 12 is usually a metal helical spring, which is designed to provide a restoring force that acts on the shift lever 13 after the shift operation is completed, pushing it back to the starting position. This automatic return function is crucial for ensuring that the transmission can correctly return to the predetermined gear position, and it helps to prevent transmission failures or performance degradation caused by incorrect shift lever positions.

[0037] The design of the return spring 12 needs to consider the spring stiffness and preload to ensure that it can provide sufficient force to overcome various resistances that may occur during the shift operation, such as friction and other external forces. The connection design of the neutral switch 5 is equally important because it is directly related to the safe operation of the transmission. The neutral switch 5 is connected to the shift lever 13 through a switch pin 14. This connection method allows the switch 5 to move with the shift lever 13, thus accurately detecting whether the transmission is in the neutral state. The switch pin 14 is usually a small metal pin that can be inserted into a specific hole on the shift lever 13 to fix the switch 5 in place. This design ensures that the switch 5 can send a signal at the right moment to indicate the state of the transmission.

[0038] The neutral switch 5 can also be connected to the switch hole 16 through a fastening bolt 4 to ensure its stable installation. The fastening bolt 4 provides a firm fixing method. It matches the threads inside the switch hole 16 through its threads, thus firmly fixing the neutral switch 5 in place. This fastening method not only provides a strong fixing force, but also allows for quick disassembly and reinstallation when needed, facilitating maintenance and replacement.

[0039] The stable installation of the neutral switch 5 is crucial for ensuring its long-term reliable operation. The use of the fastening bolt 4 helps to reduce the loosening of the switch 5 due to vibration or impact, thus ensuring that the switch 5 can maintain its performance under various operating conditions. In addition, the design of the fastening bolt 4 may also include anti-loosening measures such as thread locking glue or elastic washers to further improve the stability of the connection.

[0040] In summary, the connection design of the return spring 12 and the neutral switch 5 on the shift lever 13 together ensures the smooth, safe and reliable operation of the transmission. The automatic return function of the return spring 12, the accurate detection mechanism of the neutral switch 5, and the stable installation of the fastening bolt 4 together constitute an efficient and reliable transmission control system. This design not only improves the operating performance of the transmission, but also enhances its durability and reliability, providing users with an efficient and reliable transmission commutation solution.

[0041] For those skilled in the art, it is obvious that the present utility model is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic characteristics of the present utility model. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present utility model is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present utility model. Any reference signs in the claims should not be construed as limiting the claimed rights.

Claims

1. A commutable transmission top cover assembly, characterized in that One end of the housing (3) is provided with an end face plug piece (10); the other end of the housing (3) is connected to a shift arm (1); both sides of the housing (3) are provided with switch holes (16) connected to a neutral switch (5); fixing holes (7) are arranged on the edges of the switch holes (16); a positioning nut (6) is embedded into a groove (15) on a shift lever (13) through the fixing holes (7).

2. The top cover assembly of a reversible transmission according to claim 1, characterized in that, A dust cover (2) is arranged between the shift arm (1) and the housing (3), and the shift arm (1) is in a Z shape.

3. The top cover assembly of a reversible transmission according to claim 1 or 2, characterized in that, A fixing seat (9) is arranged on the housing (3), a shift selector handle (8) is connected above the fixing seat (9), and a shift selector arm (11) is connected below the fixing seat (9).

4. A top cover assembly of a reversible transmission according to claim 3, characterized in that, The shift selector handle (8) drives the shift selector arm (11) to move; the shift selector arm (11) drives a shift shaft (17) to drive the shift lever (13) to move.

5. The top cover assembly of a reversible transmission according to claim 4, characterized in that, One end of the shift selector arm (11) is in a disc shape, and the other end is a relatively smaller sector disc.

6. The top cover assembly of a reversible transmission according to claim 1, characterized in that, A return spring (12) is arranged on the shift lever (13).

7. A top cover assembly of a reversible transmission according to claim 1 or 6, characterized in that, The neutral switch (5) is connected to the shift lever (13) through a switch pin (14).

8. A top cover assembly of a reversible transmission according to claim 1 or 6, characterized in that, The neutral switch (5) is connected to the switch hole (16) through a fastening bolt (4).

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