Convenient-to-adjust mounting bracket for vehicle-mounted Tbox terminal
By designing a vehicle-mounted Tbox terminal installation bracket that is easy to adjust, the combination of base, connecting frame and rotary parts solves the cumbersome and inefficient problems during the installation process of different types of Tbox terminals, and achieves efficient installation to adapt to different fixed hole positions.
Patent Information
- Application Number
- CN202421561696.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-02
- Publication Date
- 2025-03-28
- Estimated Expiration
- 2034-07-02
AI Technical Summary
Different types of Tbox terminal structures and the fixing hole positions on the shell are different, resulting in the need to replace the adapted fixing frame, bracket or mounting seat. The installation steps are cumbersome and the installation efficiency is low.
A vehicle-mounted Tbox terminal mounting bracket is designed for easy adjustment, including a base, connecting frame and rotary parts. A first slide groove is provided on the base, and a connecting member and a rotary member are provided on the connecting frame. The connecting member is connected to the connecting frame through the second slide groove. The connecting position is adjusted through the first adjusting member. The rotary member is used to drive the Tbox terminal to rotate for installation.
Through this mounting bracket, it can adapt to the fixed hole position of different types of Tbox terminals, simplify the installation steps, improve the installation efficiency, and solve the problems of cumbersome and low efficiency during the installation process.
Smart Images

Figure CN222682337U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of vehicle-mounted system equipment, and in particular relates to a mounting bracket of a vehicle-mounted Tbox terminal which is easy to adjust. Background Art
[0002] The development trend of automobile technology is intelligence, interconnection, electrification and sharing. The application fields and technical status of automobiles are very broad, involving many aspects of science and engineering. In the future, automobiles will be more intelligent, environmentally friendly, safer, and more closely integrated with urban transportation, energy and other systems.
[0003] The car networking system plays an increasingly important role in modern cars. It realizes various functions and services by connecting the vehicle to the Internet. The car networking system in the car is mainly composed of four parts: the host, the Tbox (Telematics Box, on-board remote diagnosis box) terminal, the mobile phone software and the background system. Among them, the Tbox terminal is mainly used for the interconnection and communication between the background system and the mobile phone software. The Tbox terminal will be installed according to the specific area inside the vehicle. The general location is selected in the driver assistance area, the trunk area, the roof, the engine compartment, etc.
[0004] In the prior art, Tbox terminals often use specific fixing frames, brackets or mounting seats to ensure that the Tbox is installed firmly and securely. The fixing frames, brackets or mounting seats are connected to the fixing holes set on the shell of the Tbox terminal and then installed inside the vehicle. However, different types of Tbox terminals have different structures and different positions of the fixing holes on the shells. It is necessary to set a fixing frame, bracket or mounting seat that is compatible with the Tbox terminal to connect it to the Tbox terminal before it can be installed inside the vehicle. Different Tbox terminals need to be replaced with different fixing frames, brackets or mounting seats that are compatible with the Tbox, resulting in cumbersome installation steps and low installation efficiency. Utility Model Content
[0005] The purpose of the embodiments of the utility model is to provide an easily adjustable mounting bracket for a vehicle-mounted Tbox terminal, aiming to solve the problem that different types of Tbox terminals have different structures and different positions of fixing holes on the outer shell, and it is necessary to set a fixing frame, bracket or mounting seat that is compatible with it to connect with the Tbox terminal before it can be installed inside the vehicle. Different Tbox terminals need to be replaced with different fixing frames, brackets or mounting seats that are compatible with the Tbox, resulting in cumbersome installation steps and low installation efficiency.
[0006] The embodiment of the utility model is implemented as follows: a mounting bracket of a vehicle-mounted Tbox terminal that is easy to adjust, and the mounting bracket of the vehicle-mounted Tbox terminal that is easy to adjust includes:
[0007] The base is provided with a first slide groove, and the first slide groove is used for installing the connecting frame;
[0008] A connecting frame is provided with a connecting piece and a rotating piece, wherein the connecting piece is provided in multiple groups, one end of the connecting piece is connected to a fixed hole on the vehicle-mounted Tbox terminal, and the other end is connected to the connecting frame through a second slide groove, and the connecting piece adjusts the connection position of the connecting frame and the vehicle-mounted Tbox terminal through a first adjusting piece;
[0009] One end of the rotating member is installed on the first slide groove of the base, and the other end is installed on the connecting frame. The rotating member is used to drive the vehicle-mounted Tbox terminal to rotate so as to facilitate the installation of the vehicle-mounted Tbox terminal.
[0010] Preferably, the base is a bending structure and is provided with a mounting portion and a connecting portion, a plurality of groups of first mounting holes are provided on the mounting portion, the first mounting holes are used to install the mounting bracket body on the mounting position of the vehicle-mounted Tbox terminal, and the connecting portion is connected to the rotating portion through a first fixing member.
[0011] Preferably, the connecting frame is a plate-like structure, the connecting frame is provided with a plurality of connecting protrusions, the connecting protrusions are provided with a first connecting hole, the first connecting hole is used to install a connecting member and a first adjusting member, and a rotating member is installed on the back of the connecting frame through a second fixing member.
[0012] Preferably, the connecting member is provided with a connecting rod and a third fixing member, the connecting rod is provided with a positioning portion and an adjusting portion, the positioning portion is provided with a second mounting hole, the third fixing member is installed in the second mounting hole and installed on the fixing hole position of the vehicle-mounted Tbox terminal, and the adjusting portion is connected to the first adjusting member and installed on the connecting frame.
[0013] Preferably, the first adjusting member is provided with a plurality of groups of first adjusting knobs, the connecting ends of the first adjusting knobs are connected to the second slide groove and the connecting frame, and the first adjusting knobs are used to adjust the connecting position of the connecting member and the connecting frame.
[0014] Preferably, the rotating member is provided with a first rotating part and a second rotating part, a third mounting hole is provided at one end of the first rotating part to facilitate the first rotating part to be installed on the base, a first end face gear is provided at the other end of the first rotating part, the first end face gear is connected to the second end face gear on the second rotating part, the back of the second rotating part is installed on the connecting frame, a fourth mounting hole and a fifth mounting hole are respectively provided at the axial position of the first end face gear and the second end face gear, the fourth mounting hole and the fifth mounting hole are used to install the second adjusting member, and the second adjusting member is used to adjust the connection position of the first rotating part and the second rotating part.
[0015] Preferably, the second adjusting member is provided with a connecting spring and a second adjusting knob, one end of the connecting spring is installed on the connecting frame, and the other end is connected to the second adjusting knob, the second adjusting knob is provided with a fixed part and a rotating part, the fixed part is configured as a rod and is installed on the axis of the first end face gear and the second end face gear, the fixed part is connected to the connecting spring, and one end of the rotating part is rotatably connected to the fixed part, and the rotating part adjusts the connection position of the first end face gear and the second end face gear by rotating the fixed part.
[0016] An embodiment of the utility model provides an easily adjustable mounting bracket for a vehicle-mounted Tbox terminal. The utility model is provided with a base and a connecting frame. A first slide groove is provided on the base to facilitate the installation of the connecting frame and adjust the installation position of the vehicle-mounted Tbox terminal on the connecting frame according to the length direction of the first slide groove. The connecting frame is provided with a connecting piece connected to the fixed hole position on the vehicle-mounted Tbox terminal. A second slide groove is provided on the connecting piece to facilitate the connecting piece to adjust the connection position according to the fixed hole position on the vehicle-mounted Tbox terminal so as to facilitate the connection of the connecting piece to the fixed holes at different positions. A rotating piece is provided on the back side of the connecting frame. The rotating piece is used for adjusting and driving the vehicle-mounted Tbox terminal installed on the connecting frame to rotate so as to facilitate the installation of the vehicle-mounted Tbox terminal, thereby solving the problem of complicated steps of installing the frame and low installation efficiency when installing the vehicle-mounted Tbox terminal. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 A schematic diagram of the structure of a mounting bracket of a vehicle-mounted Tbox terminal that is easily adjustable and connected to a terminal in the vehicle-mounted Tbox provided by an embodiment of the utility model;
[0018] Figure 2 A three-dimensional structural diagram of a mounting bracket of a vehicle-mounted Tbox terminal that is easy to adjust provided in an embodiment of the utility model;
[0019] Figure 3 A schematic diagram of the structure of a connecting frame in a mounting bracket of a vehicle-mounted Tbox terminal that is easily adjustable provided by an embodiment of the utility model;
[0020] Figure 4 A schematic diagram of the internal structure of a rotating part in a mounting bracket of an in-vehicle Tbox terminal that is easily adjustable provided by an embodiment of the utility model.
[0021] In the accompanying drawings: 1. base; 11. first slide groove; 12. first fixing member; 2. connecting frame; 21. connecting member; 211. third fixing member; 212. connecting rod; 2121. second slide groove; 22. rotating member; 221. first rotating part; 222. second rotating part; 2221. second end face gear; 2222. second adjusting member; 2223. second adjusting knob; 22231. fixing part; 22232. rotating part; 2224. connecting spring; 223. first end face gear; 23. first adjusting member; 3. vehicle-mounted Tbox terminal. DETAILED DESCRIPTION
[0022] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.
[0023] The specific implementation of the present utility model is described in detail below in conjunction with specific embodiments.
[0024] like Figure 1-4 As shown, it is a structural diagram of a mounting bracket of a vehicle-mounted Tbox terminal 3 that is easy to adjust provided by an embodiment of the utility model, comprising: a base 1, a first slide groove 11 is provided, and the first slide groove 11 is used to install a connecting frame 2;
[0025] The connecting frame 2 is provided with a connecting member 21 and a rotating member 22. The connecting member 21 is provided in multiple groups. One end of the connecting member 21 is connected to a fixed hole on the vehicle-mounted Tbox terminal 3, and the other end is connected to the connecting frame 2 through a second slide groove 2121. The connecting member 21 adjusts the connection position of the connecting frame 2 and the vehicle-mounted Tbox terminal 3 through a first adjusting member 23;
[0026] One end of the rotating member 22 is installed on the first slide groove 11 of the base 1, and the other end is installed on the connecting frame 2. The rotating member 22 is used to drive the vehicle-mounted Tbox terminal 3 to rotate to facilitate the installation of the vehicle-mounted Tbox terminal 3.
[0027] In the embodiment of the utility model, preferably, the mounting bracket of the vehicle-mounted Tbox terminal 3 that is easy to adjust is mainly suitable for installing the vehicle-mounted Tbox terminal 3 inside the vehicle. The mounting bracket of the vehicle-mounted Tbox terminal 3 that is easy to adjust is mainly composed of a base 1 and a connecting frame 2. The base 1 is provided with a first slide groove 11 connected to one end of a rotating member 22 on the connecting frame 2. The positions of the base 1 and the connecting frame 2 can be adjusted according to the length direction of the first slide groove 11 to facilitate the adjustment of the installation position of the vehicle-mounted Tbox terminal 3. The connecting frame 2 is provided with a connecting member 21 and a rotating member 22. One end of the connecting member 21 is connected to the connecting frame 2 through a first adjusting member 23. The other end of the connecting member 21 is connected to the vehicle-mounted Tbox terminal 3. The fixing holes on the vehicle-mounted Tbox terminal 3 can be connected, and the fixing holes can be screw holes set on the back or side of the vehicle-mounted Tbox terminal 3. The second slide groove 2121 set on the connecting member 21 is connected to the connecting frame 2 and the connection position is adjusted by the first adjusting member 23 so that the connecting member 21 can be adjusted according to the different positions of the fixing holes on different vehicle-mounted Tbox terminals 3, so that the mounting bracket can be suitable for vehicle-mounted Tbox terminals 3 with fixing holes located at different positions to facilitate their installation inside the vehicle. The connecting frame 2 and the base 1 are connected by a rotating member 22, and the rotating member 22 can be rotated and adjusted according to the different installation positions of different vehicle-mounted Tbox terminals 3 inside the vehicle to facilitate the complete installation of the vehicle-mounted Tbox terminal 3.
[0028] In an example of the present invention, the present invention is provided with a base 1 and a connecting frame 2, a first slide groove 11 is provided on the base 1 to facilitate installation of the connecting frame 2 and adjust the installation position of the vehicle-mounted Tbox terminal 3 on the connecting frame 2 according to the length direction of the first slide groove 11, a connecting member 21 is provided on the connecting frame 2 to be connected with the fixed hole position on the vehicle-mounted Tbox terminal 3, a second slide groove 2121 is provided on the connecting member 21 to facilitate adjustment of the connection position of the connecting member 21 according to the fixed hole position on the vehicle-mounted Tbox terminal 3 so as to facilitate connection of the connecting member 21 with the fixed holes at different positions, and a rotating member 22 is provided on the back side of the connecting frame 2, the rotating member 22 is used for adjusting and driving the vehicle-mounted Tbox terminal 3 installed on the connecting frame 2 to rotate so as to facilitate installation of the vehicle-mounted Tbox terminal 3, thereby solving the problem of complicated installation steps and low installation efficiency when installing the vehicle-mounted Tbox terminal 3.
[0029] like Figure 1-4 As shown, as a preferred embodiment of the utility model, the base 1 is a bending structure and is provided with a mounting portion and a connecting portion, a plurality of groups of first mounting holes are provided on the mounting portion, the first mounting holes are used to install the mounting bracket body on the mounting position of the vehicle-mounted Tbox terminal 3, and the connecting portion is connected to the rotating portion 22 via a first fixing member 12.
[0030] In an embodiment of the utility model, preferably, the base 1 can be an L-shaped bending structure, the mounting portion and the connecting portion can both be rectangular plates with a certain thickness, the length direction of the mounting portion and the length direction of the connecting portion are perpendicular to each other, a plurality of groups of first mounting holes are arranged on the mounting portion, and it can be installed on the installation position of the vehicle-mounted Tbox terminal 3 by means of screws and threaded sleeves, and two groups of first slide grooves 11 are arranged on the connecting portion, so as to facilitate the first fixing member 12 to pass through the first slide groove 11 and connect with one end of the rotating member 22.
[0031] like Figure 1-4 As shown, as a preferred embodiment of the utility model, the connecting frame 2 is a plate-like structure, the connecting frame 2 is provided with multiple groups of connecting protrusions, the connecting protrusions are provided with a first connecting hole, the first connecting hole is used to install the connecting member 21 and the first adjusting member 23, and the rotating member 22 is installed on the back of the connecting frame 2 through the second fixing member.
[0032] In an embodiment of the utility model, preferably, the connecting frame 2 can be a plate-like structure with a certain thickness. Multiple groups of connecting protrusions are not arranged on the connecting frame 2. At most, the first connecting holes on one group of connecting protrusions are connected to one group of connecting members 21. The connecting protrusions are mainly used to install the connecting members 21 and the first adjusting member 23 so that the connecting member 21 can connect the vehicle-mounted Tbox terminal 3 with the connecting frame 2 and adjust the connection position through the first adjusting member 23 so that the installation bracket can be suitable for connecting with a variety of different types of vehicle-mounted Tbox terminals 3.
[0033] like Figure 1-4 As shown, as a preferred embodiment of the utility model, the connecting member 21 is provided with a connecting rod 212 and a third fixing member 211, the connecting rod 212 is provided with a positioning portion and an adjusting portion, the positioning portion is provided with a second mounting hole, the third fixing member 211 is installed in the second mounting hole and installed on the fixing hole position of the vehicle-mounted Tbox terminal 3, and the adjusting portion is connected to the first adjusting member and installed on the connecting frame 2.
[0034] In the embodiment of the utility model, preferably, the connecting member 21 is mainly composed of a connecting rod 212 and a third fixing member 211, and the second mounting hole on the positioning portion of the connecting rod 212 is used to install the third fixing member 211 so that the third fixing member 211 is connected to the fixing hole position on the vehicle-mounted Tbox terminal 3, and the first adjusting member 23 is installed on the adjusting portion so as to facilitate the connection position between the adjusting portion on the connecting rod 212 and the connecting protrusion on the connecting frame 2 according to needs.
[0035] like Figure 1-4As shown, as a preferred embodiment of the utility model, the first adjusting member 23 is provided with multiple groups of first adjusting knobs, the connecting ends of the first adjusting knobs are connected to the second slide groove 2121 and the connecting frame 2, and the first adjusting knobs are used to adjust the connection position of the connecting member 21 and the connecting frame 2.
[0036] In an embodiment of the utility model, preferably, the first adjusting member 23 is provided with multiple groups of first adjusting knobs and at most one group of first adjusting knobs is connected to a group of connecting members 21, the connecting step end of the first adjusting knob passes through the second slide groove 2121 and the first connecting hole on the connecting protrusion of the connecting frame 2 to facilitate the installation of the connecting member 21 on the connecting frame 2, and the first adjusting knob is turned to adjust the connection position of the connecting member 21 and the connecting frame 2, and the connecting end of the first adjusting knob can be set to be threadedly connected to the first connecting hole.
[0037] like Figure 1-4 As shown, as a preferred embodiment of the utility model, the rotating member 22 is provided with a first rotating part 221 and a second rotating part 222, a third mounting hole is provided at one end of the first rotating part 221 to facilitate the first rotating part 221 to be installed on the base 1, a first end face gear 223 is provided at the other end of the first rotating part 221, the first end face gear 223 is connected to the second end face gear 2221 on the second rotating part 222, the back of the second rotating part 222 is installed on the connecting frame 2, the first end face gear 223 and the second end face gear 2221 are respectively provided with a fourth mounting hole and a fifth mounting hole at the axial position, the fourth mounting hole and the fifth mounting hole are used to install the second adjusting member 2222, the second adjusting member 2222 is used to adjust the connection position of the first rotating part 221 and the second rotating part 222.
[0038] In an embodiment of the utility model, preferably, the rotating member 22 can be set to an irregular plate-like structure with a certain length. The rotating member 22 is provided with a first rotating part 221 and a second rotating part 222. A third mounting hole is provided at one end of the first rotating part 221 to facilitate connection with the first slide groove 11 on the base 1 through the first fixing member 12. The connection position of the third mounting hole and the first slide groove 11 can be adjusted as needed. A first end face gear 223 is provided at the other end of the first rotating part 221. The first end face gear 223 is provided with a side having teeth that is meshed with the teeth on the second end face gear 2221 on the second rotating part 222. The connection position of the first rotating part 221 and the second rotating part 222 is adjusted by the second adjusting member 2222 installed on the rotating member 22 to facilitate rotation of the connecting frame 2 connected to the second rotating part 222 and the vehicle-mounted Tbox terminal 3 installed on the connecting frame 2.
[0039] like Figure 1-4As shown, as a preferred embodiment of the utility model, the second adjusting member 2222 is provided with a connecting spring 2224 and a second adjusting knob 2223, one end of the connecting spring 2224 is installed on the connecting frame 2, and the other end is connected to the second adjusting knob 2223, the second adjusting knob 2223 is provided with a fixing portion 22231 and a rotating portion 22232, the fixing portion 22231 is configured as a rod and is installed on the axis of the first end face gear 223 and the second end face gear 2221, the fixing portion 22231 is connected to the connecting spring 2224, one end of the rotating portion 22232 is rotatably connected to the fixing portion 22231, and the rotating portion 22232 adjusts the connection position of the first end face gear 223 and the second end face gear 2221 by rotating the fixing portion 22231.
[0040] In the embodiment of the utility model, preferably, the second adjusting member 2222 is connected by the second adjusting knob 2223 and the connecting spring 2224, one end of the second adjusting knob 2223 is connected to the connecting frame 2 through the connecting spring 2224, the second adjusting knob 2223 is composed of a fixed portion 22231 and a rotating portion 22232, the fixed portion 22231 is installed on the fourth mounting hole and the fifth mounting hole on the axis of the first end face gear 223 and the second end face gear 2221, the fixed portion 22231 is installed on the fourth mounting hole and the fifth mounting hole and is connected to the connecting spring 2224, and the rotating portion 22232 is rotated to control the fixed portion 22231, the connecting spring 2224 and the first rotating portion 2 21, when the rotating part 22232 is rotated upward, the connecting spring 2224 is stretched so that the teeth of the first end face gear 223 on the first rotating part 221 and the second end face gear 2221 on the second rotating part 222 are separated. At this time, the connecting frame 2 on the second rotating part 222 can be rotated to facilitate the rotation of the vehicle-mounted Tbox terminal 3. When the rotating part 22232 is rotated downward, the stretched connecting spring 2224 is reset so that the first end face gear 223 on the first rotating part 221 is meshed and connected with the teeth on the second end face gear 2221 on the second rotating part 222. At this time, the connecting frame 2 on the second rotating part 222 cannot be rotated to make the vehicle-mounted Tbox terminal 3 fully installed.
[0041] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.
Claims
1. An easily adjustable mounting bracket for a vehicle-mounted Tbox terminal, characterized in that: The mounting bracket of the vehicle-mounted Tbox terminal that is easy to adjust includes: The base is provided with a first slide groove, and the first slide groove is used for installing the connecting frame; A connecting frame is provided with a connecting piece and a rotating piece, wherein the connecting piece is provided in multiple groups, one end of the connecting piece is connected to a fixed hole on the vehicle-mounted Tbox terminal, and the other end is connected to the connecting frame through a second slide groove, and the connecting piece adjusts the connection position of the connecting frame and the vehicle-mounted Tbox terminal through a first adjusting piece; One end of the rotating member is installed on the first slide groove of the base, and the other end is installed on the connecting frame. The rotating member is used to drive the vehicle-mounted Tbox terminal to rotate so as to facilitate the installation of the vehicle-mounted Tbox terminal.
2. The easily adjustable mounting bracket for a vehicle-mounted Tbox terminal according to claim 1, characterized in that: The base is a bent structure and is provided with a mounting portion and a connecting portion. A plurality of first mounting holes are provided on the mounting portion. The first mounting holes are used to mount the mounting bracket body on the mounting position of the vehicle-mounted Tbox terminal. The connecting portion is connected to the rotating portion via a first fixing member.
3. The easily adjustable mounting bracket for a vehicle-mounted Tbox terminal according to claim 1, characterized in that: The connecting frame is a plate-like structure, and is provided with a plurality of connecting protrusions. The connecting protrusions are provided with a first connecting hole, and the first connecting hole is used to install a connecting member and a first adjusting member. A rotating member is installed on the back of the connecting frame through a second fixing member.
4. The easily adjustable mounting bracket for the vehicle-mounted Tbox terminal according to claim 3, characterized in that: The connecting member is provided with a connecting rod and a third fixing member, the connecting rod is provided with a positioning portion and an adjusting portion, the positioning portion is provided with a second mounting hole, the third fixing member is installed in the second mounting hole and installed on the fixing hole position of the vehicle-mounted Tbox terminal, and the adjusting portion is connected to the first adjusting member and installed on the connecting frame.
5. The easily adjustable mounting bracket for a vehicle-mounted Tbox terminal according to claim 1, characterized in that: The first adjusting member is provided with a plurality of groups of first adjusting knobs, the connecting ends of the first adjusting knobs are connected to the second sliding grooves and the connecting frame, and the first adjusting knobs are used to adjust the connecting position of the connecting member and the connecting frame.
6. The easily adjustable mounting bracket for a vehicle-mounted Tbox terminal according to claim 1, characterized in that: The rotating member is provided with a first rotating part and a second rotating part, a third mounting hole is provided at one end of the first rotating part so that the first rotating part can be installed on the base, a first end face gear is provided at the other end of the first rotating part, the first end face gear is connected to the second end face gear on the second rotating part, the back of the second rotating part is installed on the connecting frame, a fourth mounting hole and a fifth mounting hole are respectively provided at the axial position of the first end face gear and the second end face gear, the fourth mounting hole and the fifth mounting hole are used to install the second adjusting member, and the second adjusting member is used to adjust the connection position of the first rotating part and the second rotating part.
7. The easily adjustable mounting bracket for a vehicle-mounted Tbox terminal according to claim 6, characterized in that: The second adjusting member is provided with a connecting spring and a second adjusting knob, one end of the connecting spring is installed on the connecting frame, and the other end is connected to the second adjusting knob, the second adjusting knob is provided with a fixed part and a rotating part, the fixed part is configured as a rod and is installed on the axis of the first end face gear and the second end face gear, the fixed part is connected to the connecting spring, and one end of the rotating part is rotatably connected to the fixed part, and the rotating part adjusts the connection position of the first end face gear and the second end face gear by rotating the fixed part.