Transmission gear shifting interlocking mechanism, transmission and vehicle

Abstract

The invention provides a transmission gear shifting interlocking mechanism, a transmission and a vehicle, and relates to the technical field of power transmission. The transmission gear shifting interlocking mechanism comprises a shell, the shell is provided with a containing space, and a gear shifting shaft is arranged in the containing space; the connecting support is connected with the shell, and the connecting support is arranged at the bottom of the shell; the interlocking plate is movably arranged relative to the connecting support in the axial direction of the gear shifting shaft, a first opening is formed in the interlocking plate, the two opposite side walls of the first opening are each provided with a baffle, the two baffles are arranged in the axial direction of the gear shifting shaft in a spaced mode, and each baffle is provided with a plurality of straight sections; the straight sections are sequentially connected to form a limiting concave part used for abutting against the shifting fork shaft, the limiting concave part is arranged on the side away from the gear shifting shaft, and a limiting space allowing a gear shifting block on the gear shifting shaft to penetrate through is formed between the two baffles. The problems that in the prior art, an interlocking plate is large in manufacturing difficulty, and the space utilization rate of a transmission shell is low are solved.

Description

Technical Field

[0001] This invention relates to the field of power transmission technology, and more specifically, to a transmission shift interlock mechanism, a transmission, and a vehicle. Background Technology

[0002] Current transmissions all have interlock mechanisms to prevent two gears from being engaged simultaneously. Due to space constraints, these mechanisms are usually integrated with the top cover assembly. The conventional arrangement involves setting limit plates or limit blocks on the top cover shift shaft and on both sides of the shift paddle. While this arrangement is simple, it also has shortcomings. The limit plates are sheet metal parts, and their shapes are complex to meet functional and process requirements, which makes manufacturing difficult, resulting in low product yield and high cost. The limit blocks are usually steel forgings that are then machined to meet requirements. This method is widely available and low-cost, but it increases the weight several times over and is not conducive to returning to the original position after gear selection. Currently, to improve driving comfort, it is required that gear selection be easy and that the gear selection spring force be small.

[0003] There is currently no effective solution to the aforementioned technical problems. Summary of the Invention

[0004] The main objective of this invention is to provide a transmission shift interlock mechanism, a transmission, and a vehicle to solve the problems of high manufacturing difficulty of the interlock plate and low space utilization of the transmission housing in the prior art.

[0005] To achieve the above objectives, according to one aspect of the present invention, a transmission shift interlock mechanism is provided, comprising: a housing having a receiving space, wherein a shift shaft is disposed within the receiving space; a connecting bracket connected to the housing and disposed at the bottom of the housing; and an interlock plate movably disposed relative to the connecting bracket along the axial direction of the shift shaft, the interlock plate having a first opening, and a baffle disposed on each of the two side walls opposite to the first opening, the two baffles being spaced apart along the axial direction of the shift shaft, and each baffle having multiple straight sections, the multiple straight sections being sequentially connected to form a limiting recess for abutting against a shift fork shaft, the limiting recess being disposed on the side away from the shift shaft, and a limiting space being formed between the two baffles for a shift lever on the shift shaft to pass through.

[0006] Furthermore, along the axial direction of the shift shaft, the two baffles are set at a distance, and the shift lever extends through the first opening into the limiting space. The shift lever has a neutral state located in the middle of the limiting space, and the shift lever has a shift state. When the shift lever is in the neutral state, the shift lever is set at a distance from each baffle. When the shift lever is in the shift state, the shift lever abuts against the baffle.

[0007] Furthermore, the baffle includes: a connecting section, one end of which is connected to one side of the first opening, and the connecting section extends along the height direction of the accommodating space; a limiting section, one end of which is connected to the other end of the connecting section; and an abutting section, one end of which is connected to the other end of the limiting section, and the abutting section is arranged parallel to the connecting section; wherein, a limiting space is formed between the two abutting sections of two adjacent baffles, and the two limiting sections of the two baffles extend along the axial direction of the shift shaft, with the limiting section of one baffle extending toward the limiting section of the other baffle to abut and limit the shift shaft.

[0008] Furthermore, the baffle is integrally formed, and the connecting section is welded to one side of the first opening.

[0009] Furthermore, a second opening is provided on the connecting bracket, with the first opening corresponding to the second opening. The baffle and the shift lever both pass through the first opening and the second opening are positioned towards the side away from the shift shaft. When the shift lever is in neutral, the connecting section is positioned at a distance from one side of the second opening.

[0010] Furthermore, the bottom end of the interlock plate is slidably connected to the side of the second opening. The side of the interlock plate facing the connecting bracket has a first plane, at least a portion of which extends along the axial direction of the shift shaft. At least one side of the second opening has a second plane, which also extends along the axial direction of the shift shaft. The first plane and the second plane are slidably fitted together so that the interlock plate and the connecting bracket are slidably connected.

[0011] Furthermore, the top of the interlock plate is slidably connected to the housing, and a third plane is provided on the side of the interlock plate facing the shift shaft. At least part of the third plane extends along the axial direction of the shift shaft, and the third plane is slidably fitted and connected to the housing.

[0012] Furthermore, the connecting bracket is detachably connected to the housing.

[0013] According to another aspect of the present invention, a transmission is provided, the transmission having a transmission shift interlock mechanism, the transmission shift interlock mechanism being the aforementioned transmission shift interlock mechanism.

[0014] According to another aspect of the invention, a vehicle is also provided, the vehicle having a transmission, the transmission being the aforementioned transmission.

[0015] By applying the technical solution of this invention, an interlock plate is supported by a connecting bracket, which is connected to the housing. The interlock plate is slidably arranged relative to the housing and the connecting bracket. A first opening is formed on the interlock plate, and two baffles are arranged on the side of the first opening. A limiting space is formed between the two baffles for the shift lever to pass through. This allows the shift lever to move along the axial direction of the shift shaft during shifting, causing the interlock plate to move together. The baffles on the interlock plate extend to form limiting recesses, with the recessed end of the limiting recess protruding towards the side where the shift fork shaft is located, so that the baffle abuts against the shift fork shaft. This prevents the trigger part of the shift lever from simultaneously engaging two gears, thus achieving the interlocking function of each gear. Simultaneously, the interlock plate is slidably arranged between the housing and the connecting bracket via the connecting bracket, allowing the interlock plate to be set independently without connecting it to the shift shaft. This improves space utilization, reduces the weight borne by the shift shaft 20, and makes gear selection more convenient. Attached Figure Description

[0016] The accompanying drawings, which form part of this application, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an undue limitation of the invention. In the drawings:

[0017] Figure 1 A schematic diagram of the structure of a first embodiment of the transmission shift interlock mechanism according to the present invention is shown;

[0018] Figure 2 A schematic diagram of a second embodiment of the transmission shift interlock mechanism according to the present invention is shown;

[0019] Figure 3 A schematic diagram of a third embodiment of the transmission shift interlock mechanism according to the present invention is shown;

[0020] Figure 4 A schematic diagram of the structure of a first embodiment of the interlocking plate according to the present invention is shown;

[0021] Figure 5 A schematic diagram of a second embodiment of the interlocking plate according to the present invention is shown;

[0022] Figure 6 A schematic diagram of the structure of a third embodiment of the interlocking plate according to the present invention is shown;

[0023] Figure 7 A schematic diagram of a connection bracket according to an embodiment of the present invention is shown;

[0024] Figure 8 A schematic diagram of an embodiment of the shift lever according to the present invention is shown.

[0025] The above figures include the following reference numerals:

[0026] 10. Shell;

[0027] 100. Capacity space;

[0028] 20. Shift shaft;

[0029] 30. Connecting bracket;

[0030] 300. Second opening;

[0031] 301. Second plane;

[0032] 40. Interlock plate;

[0033] 400. First opening;

[0034] 401. First plane;

[0035] 402. The third plane;

[0036] 41. Baffle;

[0037] 410. Limiting space;

[0038] 411. Connecting section;

[0039] 412. Limiting segment;

[0040] 413. Connecting section;

[0041] 42. Limiting recess;

[0042] 50. Gear shifter. Detailed Implementation

[0043] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0044] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0045] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such terms can be used interchangeably where appropriate so that the embodiments of this application described herein can be implemented, for example, in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover a non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0046] Exemplary embodiments according to this application will now be described in more detail with reference to the accompanying drawings. However, these exemplary embodiments may be implemented in many different forms and should not be construed as being limited to the embodiments set forth herein. It should be understood that these embodiments are provided so that the disclosure of this application is thorough and complete, and that the concept of these exemplary embodiments is fully conveyed to those skilled in the art. In the drawings, for clarity, the thickness of layers and regions may be exaggerated, and the same reference numerals are used to denote the same devices, and therefore their description will be omitted.

[0047] Combination Figures 1 to 8 As shown in the specific embodiment of this application, a transmission shift interlock mechanism is provided.

[0048] Specifically, such as Figures 1 to 3 As shown, the transmission shift interlock mechanism includes a housing 10, a connecting bracket 30, and an interlock plate 40. The housing 10 has a receiving space 100, in which a shift shaft 20 is disposed. The connecting bracket 30 is connected to the housing 10 and is disposed at the bottom of the housing 10. The interlock plate 40 is movably disposed relative to the connecting bracket 30 along the axial direction of the shift shaft 20. The interlock plate 40 has a first opening 400. A baffle 41 is disposed on each of the two opposite side walls of the first opening 400. The two baffles 41 are spaced apart along the axial direction of the shift shaft 20, and each baffle 41 has multiple straight sections. The multiple straight sections are connected in sequence to form a limiting recess 42 for abutting against the shift fork shaft. The limiting recess 42 is disposed on the side away from the shift shaft 20, and a limiting space 410 is formed between the two baffles 41 for the shift paddle 50 on the shift shaft 20 to pass through.

[0049] By using the technical solution of this embodiment, the interlock plate 40 is supported by a connecting bracket 30, which is connected to the housing 10. The interlock plate 40 can be slidably arranged relative to the housing 10 and the connecting bracket 30. A first opening 400 is opened on the interlock plate 40, and two baffles 41 are arranged on the side of the first opening 400. A limiting space 410 is formed between the two baffles 41 for the shift head 50 to pass through. When the shift head 50 moves along the axial direction of the shift shaft 20 to shift gears, it drives the interlock plate 40 to move together. The baffles 41 on the interlock plate 40 extend to form a limiting recess 42. The recessed end of the limiting recess 42 protrudes towards the side where the shift fork shaft is located, so that the baffle 41 abuts against the shift fork shaft. This can prevent the trigger part of the shift head 50 from being engaged in two gears at the same time, thus realizing the interlock function of each gear shift. Meanwhile, the interlock plate 40 is slidably disposed between the housing 10 and the connecting bracket 30 via the connecting bracket 30, so that the interlock plate 40 is set independently and there is no need to connect the interlock plate 40 to the shift shaft 20, which improves space utilization, reduces the weight borne by the shift shaft 20, and makes gear selection more convenient.

[0050] It should be noted that the large first opening 400 on the interlock plate 40 can significantly reduce the weight of the interlock plate 40. Furthermore, the separate design of the interlock plate 40 and the shift shaft 20 can greatly reduce the manufacturing difficulty of the integrated shift shaft 20-interlock plate 40 component, significantly reduce costs, and also improve the comfort of shifting operation.

[0051] Specifically, such as Figures 2 to 4As shown, along the axial direction of the shift shaft 20, two baffles 41 are arranged at a distance. The shift lever 50 extends through the first opening 400 into the limiting space 410. The shift lever 50 has a neutral state located in the middle of the limiting space 410, and a shifting state. When the shift lever 50 is in the neutral state, it is arranged at a distance from each baffle 41. When the shift lever 50 is in the shifting state, it abuts against the baffles 41. The two baffles 41 are arranged on both sides of the first opening 400 along the axial direction of the shift shaft 20. When the shift lever 50 moves along the axial direction with the shift shaft 20, the baffles 41 on both sides of the first opening 400 serve as the boundaries for the shift lever 50 to switch between different gears, which can limit the movement of the shift lever 50 within the preset gear range and ensure that the shift lever 50 can only engage one gear at a time. When the shift lever 50 is in neutral, it is located at the center of the limiting space 410, with a certain distance between it and the baffle 41. This arrangement facilitates the installation and quick and easy positioning of the shift lever 50. When the shift lever 50 moves with the shift shaft 20, it switches to the shifting state. The contact between the shift lever 50 and the baffle 41 causes the interlock plate 40 to move together, allowing the interlock plate 40 to interlock the shift lever 50 according to its different positions, thus improving the transmission's handling performance and reliability.

[0052] Furthermore, such as Figure 4 , Figure 5As shown, the baffle 41 includes a connecting section 411, a limiting section 412, and an abutting section 413. One end of the connecting section 411 is connected to one side of the first opening 400, and the connecting section 411 extends along the height direction of the accommodating space 100. One end of the limiting section 412 is connected to the other end of the connecting section 411. One end of the abutting section 413 is connected to the other end of the limiting section 412, and the abutting section 413 is arranged parallel to the connecting section 411. A limiting space 410 is formed between the two abutting sections 413 of two adjacent baffles 41. The two limiting sections 412 of the two baffles 41 extend along the axial direction of the shift shaft 20. The limiting section 412 of one baffle 41 extends toward the limiting section 412 of the other baffle 41 to abut and limit the shift shaft 20. The straight section of the baffle 41 is divided into three sequentially connected sections. The connecting section 411 acts as a bridge, connecting the main body of the baffle 41 to the first opening 400. The connecting section 411 extends along the height direction of the accommodating space 100, allowing the main body of the baffle 41 (i.e., the limiting recess 42) to be positioned at a height that can abut against and limit the shift fork shaft. The limiting section 412 extends laterally within its corresponding height range, expanding its horizontal extension area to limit the position of the shift fork shaft within its range. The abutting section 413 is used to abut against the shift lever 50 to ensure the stability of the entire interlock plate 40 when the shift lever 50 moves the interlock plate 40. Through the segmented design of the baffle 41, effective limiting of the shift fork shaft is achieved, ensuring the uniqueness of each shift, simplifying the structure of the interlock mechanism, and improving the stability and reliability of the shifting process.

[0053] In one exemplary embodiment of this application, the baffle 41 is integrally formed, and the connecting segment 411 is welded to one side of the first opening 400. The integral forming method allows the baffle 41 to have better structural strength and durability, reduces errors in part alignment and assembly, and reduces processing steps, thus lowering costs. Furthermore, welding the connecting segment 411 to one side of the first opening 400 provides a high-strength connection.

[0054] It should be noted that the baffle 41 and the interlock plate 40 can also be integrally formed, making the interlock plate 40 a single sheet metal part, thus achieving lightweight and low cost. Alternatively, the interlock plate 40 can also be integrally cast using powder metallurgy extrusion molding, which can also achieve a high-strength structure, allowing the shift shaft 20 to withstand lighter shifting operations.

[0055] Furthermore, such as Figure 7As shown, the connecting bracket 30 has a second opening 300, and the first opening 400 is correspondingly arranged to the second opening 300. The baffle 41 and the shift lever 50 both pass through the first opening 400, and the second opening 300 is arranged facing away from the shift shaft 20. When the shift lever 50 is in neutral, the connecting section 411 is arranged at a distance from one side of the second opening 300. The second opening 300 is provided on the connecting bracket 30. When the connecting bracket 30 supports the interlock plate 40, the baffle 41 of the interlock plate 40 is mainly arranged to pass through the second opening 300. When the interlock plate 40 slides relative to the housing 10 and the connecting bracket 30, the baffle 41 can only move within the second opening 300. Thus, the second opening 300 restricts the range of motion of the interlock plate 40, causing it to move only at the upper part of the shift fork shaft. In neutral, the connecting section 411 maintains a certain distance from one side of the second opening 300, allowing the shift lever 50 a certain degree of freedom in neutral, enabling it to slide freely when shifted from neutral to any gear. The second opening 300 provides the necessary movement space for the shift lever 50 and the baffle 41, while ensuring the stability and reliability of the interlocking mechanism, simplifying the structure of the connecting bracket 30, and improving the assembly efficiency and operational comfort of the interlocking mechanism.

[0056] Furthermore, such as Figures 4 to 7 As shown, the bottom end of the interlock plate 40 is slidably connected to the side of the second opening 300. A first plane 401 is provided on the side of the interlock plate 40 facing the connecting bracket 30, and at least a portion of the first plane 401 extends axially along the shift shaft 20. At least one side of the second opening 300 is provided with a second plane 301, which also extends axially along the shift shaft 20. The first plane 401 and the second plane 301 are slidably connected to each other, allowing the interlock plate 40 and the connecting bracket 30 to be slidably connected. Through the sliding connection of the first plane 401 and the second plane 301, the interlock plate 40 can smoothly move to various gears on the shift shaft 20, effectively preventing the simultaneous engagement of two gears. The sliding connection design reduces friction between the interlock plate 40 and the connecting bracket 30, lowering the risk of component wear and improving long-term maintenance and operational reliability. The smooth sliding of the interlock plate 40 makes shifting easier, reducing the force required by the driver during shifting and enhancing driving comfort.

[0057] It should be noted that the first plane 401 and the second plane 301 are machined surfaces with a certain degree of roughness, but they can slide relative to each other. The first plane 401 and the second plane 301 are in contact and can slide to each other, so that they can maintain good stability and positioning accuracy even under high speed and high load conditions, preventing shifting failure or transmission damage caused by loosening or misalignment of the mechanism.

[0058] Specifically, the top end of the interlock plate 40 is slidably connected to the housing 10. A third plane 402 is provided on the side of the interlock plate 40 facing the shift shaft 20, with at least a portion of the third plane 402 extending axially along the shift shaft 20. The third plane 402 and the housing 10 are slidably fitted together. Since the interlock plate 40 is slidably disposed between the connecting bracket 30 and the housing 10, the interlock plate 40 is slidably connected to the second plane 301 of the connecting bracket 30 via the first plane 401. Similarly, a third plane 402 is also provided at the other end of the interlock plate 40, and a plane is provided on the housing 10 at a position corresponding to the third plane 402 to engage with it. Through the slidable connection between the third plane 402 and the contact surface of the housing 10, it is ensured that the interlock plate 40 can accurately move to the required gear under the drive of the shift shaft 20, while ensuring the stability of the interlock plate 40's position throughout the movement, reducing unnecessary vibration and shaking.

[0059] In one embodiment of this application, the connecting bracket 30 is detachably connected to the housing 10. The connecting bracket 30 is detachably connected to the housing 10 by means of bolts, clips, or pins. When the transmission needs maintenance or a component (such as the interlock plate 40) needs to be replaced, the detachable connection allows maintenance personnel to quickly and easily disassemble and reassemble the relevant components without damaging or permanently changing the structure of other parts, saving maintenance time and reducing maintenance costs.

[0060] According to another specific embodiment of this application, a transmission is provided, which includes a transmission shift interlock mechanism, the same as the transmission shift interlock mechanism described in the above embodiment. Integrating the interlock mechanism from the above embodiment into the transmission, through reasonable space utilization and optimized component design, achieves accuracy and stability in transmission shifting operation. By utilizing the axial movement characteristics of the shift shaft 20, simultaneous engagement of two gears is prevented through physical limiting, improving the reliability and safety of shifting operation, reducing manufacturing costs and assembly difficulty, and enhancing driving comfort.

[0061] According to another specific embodiment of this application, a vehicle is also provided, the vehicle having a transmission, the transmission being the transmission in the above embodiment.

[0062] According to another specific embodiment of this application, a preferred embodiment of a transmission shift interlock mechanism is also provided, which is based on the principles of making reasonable use of space, improving operating comfort, and reducing manufacturing difficulty.

[0063] Specifically, the transmission shift interlock mechanism includes a housing 10, a shift shaft 20, a shift paddle 50, an interlock plate 40, and a connecting bracket 30. The interlock plate 40 is a one-piece stamped sheet metal part, which is lightweight and low in cost. The interlock plate 40 and the shift shaft 20 are not assembled together; the plate 40 can slide within the second opening 300 of the connecting bracket 30 to achieve interlocking of each gear. The interlock plate 40 has a first opening 400 that engages with the shift paddle 50. The shift paddle 50 is fixedly connected to the shift shaft 20, which engages with the housing 10. The connecting bracket 30 is connected to the housing 10 by bolts. The housing 10 has a support portion that, when engaged with the connecting bracket 30, ensures that the interlock plate 40 can slide flexibly but cannot disengage.

[0064] A first opening 400 is provided at the center of the interlock plate 40 for mounting the shift knob 50. Baffles 41 are provided below the interlock plate 40 and on both sides of the first opening 400 to limit shifting and prevent two gears from being engaged simultaneously. Two high-roughness first planes 401 and third planes 402 are provided on the top and bottom of the interlock plate 40 to ensure minimal friction with the connecting bracket 30 during sliding. The connecting bracket 30 has two high-roughness second planes 301 that mate with the first planes 401. The connecting bracket 30 has three or more connecting parts that mate with the housing 10. Figure 8 As shown, the shift paddle 50 is provided with a shift ball head structure, and its two ends are machined to ensure that it can freely extend into the limiting space 410. The shift paddle 50 is fixedly connected to the shift shaft 20, and the shift shaft 20 is connected to the housing 10.

[0065] A second opening 300 is provided between the two second planes 301 of the connecting bracket 30, and the inner end faces on both sides of the second opening 300 are designed with a specific distance from the ball head structure and the other end face of the shift lever 50 and the two end faces of the baffle 41 of the interlock plate 40, so as to maximize weight reduction and prevent interference during operation.

[0066] As can be seen from the above description, the transmission shift interlock mechanism in the above embodiment has the following beneficial effects: Compared with the shift interlock structure of the current market transmission assembly, separating the interlock plate 40 from the shift shaft 20 and placing it in the groove formed by the second opening 300 of the connecting bracket 30, and fixing the connecting bracket 30 to the housing 10, can make reasonable use of space, reduce the weight on the shift shaft 20 and make gear selection easier, and significantly reduce the manufacturing difficulty of the overall sheet metal parts of the shift shaft 20 and the interlock plate 40.

[0067] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0068] In addition to the above, it should be noted that the terms "one embodiment," "another embodiment," and "embodiment" used in this specification refer to specific features, structures, or characteristics described in connection with that embodiment, which are included in at least one embodiment described in the general description of this application. The appearance of the same expression in multiple places in the specification does not necessarily refer to the same embodiment. Furthermore, when a specific feature, structure, or characteristic is described in connection with any embodiment, the intention is to suggest that implementing such a feature, structure, or characteristic in conjunction with other embodiments also falls within the scope of this invention.

[0069] In the above embodiments, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0070] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A transmission shift interlock mechanism, characterized in that, include: The housing (10) has a receiving space (100) in which a shift shaft (20) is provided. A connecting bracket (30) is connected to the housing (10) and is disposed at the bottom of the housing (10); An interlock plate (40) is movably disposed relative to the connecting bracket (30) along the axial direction of the shift shaft (20). A first opening (400) is provided on the interlock plate (40). A baffle (41) is provided on each of the two opposite side walls of the first opening (400). The two baffles (41) are spaced apart along the axial direction of the shift shaft (20), and each baffle (41) has multiple straight sections. The multiple straight sections are connected in sequence to form a limiting recess (42) for abutting against the shift fork shaft. The limiting recess (42) is disposed on the side away from the shift shaft (20), and a limiting space (410) is formed between the two baffles (41) for the shift head (50) on the shift shaft (20) to pass through.

2. The transmission shift interlock mechanism according to claim 1, characterized in that, Along the axial direction of the shift shaft (20), the two baffles (41) are arranged at a distance. The shift lever (50) extends through the first opening (400) into the limiting space (410). The shift lever (50) has a neutral state located in the middle of the limiting space (410) and a shift state. When the shift lever (50) is in the neutral state, the shift lever (50) is arranged at a distance from each of the baffles (41). When the shift lever (50) is in the shift state, the shift lever (50) abuts against the baffles (41).

3. The transmission shift interlock mechanism according to claim 2, characterized in that, The baffle (41) includes: A connecting segment (411) is provided, one end of which is connected to one side of the first opening (400), and the connecting segment (411) extends along the height direction of the accommodating space (100). A limiting segment (412), one end of which is connected to the other end of the connecting segment (411); Abutting section (413), one end of which is connected to the other end of the limiting section (412), and the abutting section (413) is arranged parallel to the connecting section (411); The limiting space (410) is formed between the two abutting sections (413) of two adjacent baffles (41), and the two limiting sections (412) of the two baffles (41) extend along the axial direction of the shift shaft (20). The limiting section (412) of one baffle (41) extends toward the limiting section (412) of the other baffle (41) to abut and limit the shift shaft.

4. The transmission shift interlock mechanism according to claim 3, characterized in that, The baffle (41) is integrally formed, and the connecting section (411) is welded to one side of the first opening (400).

5. The transmission shift interlock mechanism according to claim 3, characterized in that, The connecting bracket (30) has a second opening (300), and the first opening (400) is arranged corresponding to the second opening (300). The baffle (41) and the shift lever (50) both pass through the first opening (400) and the second opening (300) and are arranged towards the side away from the shift shaft (20). When the shift lever (50) is in the neutral state, the connecting section (411) is arranged at a distance from one side of the second opening (300).

6. The transmission shift interlock mechanism according to claim 5, characterized in that, The bottom end of the interlock plate (40) is slidably connected to the side of the second opening (300). The interlock plate (40) has a first plane (401) on the side facing the connecting bracket (30). At least a portion of the first plane (401) extends along the axial direction of the shift shaft (20). At least one side of the second opening (300) has a second plane (301) extending along the axial direction of the shift shaft (20). The first plane (401) and the second plane (301) are slidably fitted together so that the interlock plate (40) and the connecting bracket (30) are slidably connected.

7. The transmission shift interlock mechanism according to claim 6, characterized in that, The top end of the interlock plate (40) is slidably connected to the housing (10). The interlock plate (40) has a third plane (402) on the side facing the shift shaft (20). At least part of the third plane (402) extends along the axial direction of the shift shaft (20). The third plane (402) is slidably attached to the housing (10).

8. The transmission shift interlock mechanism according to any one of claims 1-7, characterized in that, The connecting bracket (30) is detachably connected to the housing (10).

9. A transmission, characterized in that, The transmission has a transmission shift interlock mechanism, which is the transmission shift interlock mechanism according to any one of claims 1-8.

10. A vehicle, characterized in that, The vehicle has a transmission, which is the transmission according to claim 9.

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