Control device

Abstract

The utility model discloses a control device which comprises a shell, the shell is provided with a first mounting hole and a second mounting hole, and the center line direction of the first mounting hole and the center line direction of the second mounting hole intersect; the back key is provided with a mounting shaft and a trigger block, the trigger block is mounted in the first mounting hole, and the mounting shaft is movably mounted in the second mounting hole; when the back key is pressed, the trigger block triggers a signal, and the mounting shaft rotates around the axis of the mounting shaft in the second mounting hole. The back key is easy to install and stable in installation.

Description

Technical Field

[0001] The present application relates to the technical field of control devices, and in particular to a control device. Background Art

[0002] In order to meet the increasingly complex control needs, in addition to the buttons and joysticks set on the front, the control device can also be provided with trigger points and back keys on the back. The back keys touch the trigger points to send signals, so that fingers other than the thumb can also participate in the input of operation commands. The existing back keys are generally set to detachable installation methods such as magnetic suction and elastic shaft clamping to adapt to different usage preferences. However, the magnetic installation is prone to back key shaking, and in order to reduce the probability of falling off, the elastic shaft clamping needs to press the back key into the mounting structure with force during installation, so that the mounting structure is deformed to achieve a stable clamping. The existing installation method is difficult to take into account both assembly stability and assembly difficulty, and the user experience is not good. Utility Model Content

[0003] The present application provides a control device to solve the technical problem that it is difficult to achieve both assembly stability and assembly difficulty for the back keys of the control device.

[0004] In order to solve the above technical problems, the present application proposes a control device, including: a shell, the shell is provided with a first mounting hole and a second mounting hole, wherein the center line direction of the first mounting hole and the center line direction of the second mounting hole intersect; a back key, the back key is provided with a mounting shaft and a trigger block, the trigger block is installed in the first mounting hole, and the mounting shaft is movably installed in the second mounting hole; wherein, when the back key is pressed, the trigger block will trigger a signal, and the mounting shaft rotates around the axis of the mounting shaft in the second mounting hole.

[0005] Wherein, a clamping groove is provided on the installation shaft, and a clamping part is also provided on the shell body, and the clamping part can be releasably clamped in the clamping groove.

[0006] The control device further includes an elastic arm, which is arranged on the shell and extends along an axial direction parallel to the installation axis, and the clamping portion is arranged on the elastic arm.

[0007] Among them, the control device includes a snap fastener, which is detachably arranged on the shell, and the elastic arm is arranged on the snap fastener; the shell also has an operating hole, and the snap fastener at least partially passes through the operating hole and is exposed on the outer surface of the shell.

[0008] Among them, the back key also includes a connecting part, and the mounting shaft is arranged on the connecting part; the shell is also provided with a mounting groove connected to the second mounting hole, and the connecting part is movably installed in the mounting groove; along the direction from the second mounting hole to the mounting groove, the size of the mounting groove gradually increases to form a moving space required for the connecting part to offset when the mounting shaft rotates.

[0009] Among them, along the direction perpendicular to the second mounting hole to the mounting slot, the mounting slot includes a limiting wall and an inclined wall arranged opposite to each other, and along the direction perpendicular to the second mounting hole to the mounting slot, the inclined wall is inclined away from the limiting wall to form a moving space.

[0010] Among them, the back key also includes a main body, the connecting part and the trigger block are both arranged on the same side of the main body facing the shell, and one side of the main body is raised and extended to form an operating end; the trigger block is located between the connecting part and the operating end; the inclined wall is located on the inner wall of the installation groove facing the operating end.

[0011] The shell includes a bottom wall and a side wall, the bottom wall is connected to the side wall and has different directions, the bottom wall and the side wall enclose an accommodating space, the first mounting hole is arranged on the bottom wall and passes through the bottom wall to connect to the accommodating space, the second mounting hole and the mounting groove are both arranged on the side wall and pass through the side wall to connect to the accommodating space, a clamping portion is provided on the inner side surface of the side wall facing the accommodating space, the mounting shaft passes through the side wall through the second mounting hole, the mounting shaft is provided with a clamping groove, and the clamping groove is clamped with the clamping portion.

[0012] Among them, a mounting protrusion is convexly provided on the inner side surface, and the second mounting hole and the mounting groove both pass through the mounting protrusion; an elastic arm is convexly provided on the end surface of the mounting protrusion facing away from the inner side surface, and a clamping portion is convexly provided on the elastic arm; when the mounting shaft moves in the second mounting hole, the elastic arm is deformed to enable the clamping portion to engage or disengage with the clamping groove.

[0013] It also includes a stop block, wherein the stop block is arranged on the inner wall of the installation groove, or the stop block is arranged on the shell, and the stop block is at least partially aligned with the installation groove; when the connecting part is movably installed in the installation groove, it stops at the stop block.

[0014] The beneficial effects of the present application are as follows: Different from the prior art, the present application provides a control device, which includes a shell and a back key. The shell is provided with a first mounting hole and a second mounting hole. The direction of the center line of the first mounting hole and the direction of the center line of the second mounting hole intersect. The back key is provided with a mounting shaft and a trigger block. The trigger block is installed in the first mounting hole. The mounting shaft is movably installed in the second mounting hole. When the back key is pressed, the trigger block triggers a signal, and the mounting shaft rotates around the axis of the mounting shaft in the second mounting hole. Through the above arrangement, the installation of the back key can be completed by inserting the mounting shaft of the back key into the second mounting hole, which is convenient for installation. At the same time, since the direction of the second mounting hole is different from the direction of the first mounting hole where the trigger block is set, that is, when the back key is pressed to touch the trigger block, the direction of the external force will not be parallel to the direction of the center line of the second mounting hole, and the mounting shaft will not be pushed out of the second mounting hole by the transmitted external force, but will be limited by the hole wall of the second mounting hole, so that the back key is firmly installed. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present application. Those skilled in the art can also derive other drawings based on these drawings without inventive work, among which:

[0016] Figure 1 This is a schematic structural diagram of an embodiment of the control device of the present application;

[0017] Figure 2 This is a structural diagram of an embodiment of a back key of the present application;

[0018] Figure 3 This is a structural diagram of an embodiment of the housing of the present application;

[0019] Figure 4 yes Figure 3 A is an enlarged schematic diagram shown in FIG.

[0020] Figure 5 is a cross-sectional schematic diagram of an embodiment of the control device of the present application;

[0021] Figure 6 This is a partial structural diagram of an embodiment of the control device of the present application;

[0022] Figure 7 This is a first structural diagram of another embodiment of the control device of the present application.

[0023] Figure numbers: 100, control device; 1, shell; 11, first mounting hole; 12, second mounting hole; 13, mounting groove; 131, moving space; 132, limiting wall; 133, inclined wall; 134, stop block; 14, elastic arm; 141, clamping part; 1411, first guide slope; 15, bottom wall; 16, side wall; 161, mounting protrusion; 2, back key; 21, mounting shaft; 211, clamping groove; 212, second guide slope; 22, trigger block; 23, connecting part; 24, main body; 241, operating end; 3, fastener. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0025] References herein to "embodiments" mean that a particular feature, structure, or characteristic described in connection with the embodiments may be included in at least one embodiment of the present application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor does it constitute an independent or alternative embodiment that is mutually exclusive of other embodiments. It is understood, both explicitly and implicitly, by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0026] The control device provided by the utility model is described in detail below with reference to the embodiments.

[0027] See also Figures 1 to 3 , Figure 1 This is a schematic structural diagram of an embodiment of the control device of the present application; Figure 2 This is a structural diagram of an embodiment of a back key of the present application; Figure 3 It is a structural schematic diagram of an embodiment of the shell of the present application. The present application provides a control device 100, which includes a shell 1 and a back key 2. The shell 1 may have a front and a back. The front may be provided with buttons, a joystick, etc. The back key 2 may be located on the back of the shell 1. The shell 1 is provided with a first mounting hole 11 and a second mounting hole 12. The centerline direction of the first mounting hole 11 and the centerline direction of the second mounting hole 12 intersect. For example, when the first mounting hole 11 is vertically arranged parallel to the direction of gravity, the second mounting hole 12 may be horizontally arranged perpendicular to the direction of gravity. The back key 2 is provided with a mounting shaft 21 and a trigger block 22. The trigger block 22 is installed in the first mounting hole 11. The mounting shaft 21 is movably installed in the second mounting hole 12.

[0028] When the back key 2 is pressed, it moves toward the housing 1, triggering the block 22 to trigger a signal, and the mounting shaft 21 rotates around its axis within the second mounting hole 12. When the back key 2 is released, it moves away from the housing 1, triggering the block 22 to stop triggering the signal, and the mounting shaft 21 rotates in the opposite direction.

[0029] With the above arrangement, the back key 2 can be installed by inserting the mounting shaft 21 of the back key 2 into the second mounting hole 12 in a direction parallel to the centerline of the second mounting hole 12, making installation convenient. Furthermore, because the orientation of the second mounting hole 12 is different from that of the first mounting hole 11 in which the trigger block 22 is located, when the back key 2 is pressed to contact the trigger block 22, the direction of the external force is not parallel to the centerline of the second mounting hole 12. As a result, the mounting shaft 21 will not be pushed out of the second mounting hole 12 by the external force transmitted, but will be restrained by the wall of the second mounting hole 12, ensuring a secure installation of the back key 2.

[0030] The shape and size of the mounting shaft 21 can match the second mounting hole 12. The axis of the mounting shaft 21 can coincide with or not coincide with the axis of the second mounting hole 12. The trigger block 22 can generate a trigger signal by contacting an electrical component in the first mounting hole 11.

[0031] See also Figures 4 to 6 , Figure 4 yes Figure 3 A is an enlarged schematic diagram shown in FIG. Figure 5 is a cross-sectional schematic diagram of an embodiment of the control device of the present application; Figure 6 It is a partial structural diagram of an embodiment of the control device of the present application. In one embodiment, a clamping groove 211 is provided on the mounting shaft 21. A clamping portion 141 is also provided on the housing 1. The clamping portion 141 can be releasably clamped to the clamping groove 211. The clamping portion 141 can be arranged in the second mounting hole 12 or outside the second mounting hole 12. The clamping groove 211 can be arranged on the outer peripheral surface of the mounting shaft 21. When the clamping groove 211 is clamped with the clamping groove 211. The mounting shaft 21 cannot move along the axis relative to the housing 1, and can only rotate around the axis relative to the housing 1.

[0032] Through the above arrangement, when the mounting shaft 21 is installed in the second mounting hole 12 , the engaging portion 141 can engage with the engaging groove 211 , so that the mounting shaft 21 cannot escape from the second mounting hole 12 , further increasing the assembly stability of the back key 2 .

[0033] In one embodiment, the control device 100 further includes an elastic arm 14 disposed on the housing 1. The elastic arm 14 is elastic and can undergo a certain degree of elastic deformation. The elastic arm 14 extends along an axis parallel to the mounting shaft 21. A clamping portion 141 is disposed on the elastic arm 14.

[0034] When the mounting shaft 21 is installed in the second mounting hole 12, the outer periphery of the mounting shaft 21 can press the engaging portion 141, causing the elastic arm 14 to move away from the mounting shaft 21. When the mounting shaft 21 is inserted to the position where the engaging groove 211 and the engaging portion 141 correspond, the outer periphery of the mounting shaft 21 no longer presses the elastic arm 14, and the elastic arm 14 rebounds, causing the engaging portion 141 to engage with the mounting groove 13.

[0035] With the above arrangement, since the elastic arm 14 can be elastically deformed, when installing the back key 2, only a large thrust is required to push the engaging portion 141 until the engaging portion 141 is engaged with the engaging groove 211. At the same time, force feedback and sound feedback are provided to the user when the engaging portion 141 is engaged with the engaging groove 211, allowing the user to clearly understand whether the installation shaft 21 is properly installed and preventing the installation shaft 21 from being over-pushed, thus facilitating installation and providing a good user experience.

[0036] The elastic arm 14 can be integrally formed with the housing 1 or can be separately provided. Figure 7 , Figure 7 This is a first structural schematic diagram of another embodiment of the control device of the present application. In one specific embodiment, the control device 100 includes a latch 3. The latch 3 is detachably mounted on the housing 1. The elastic arm 14 is mounted on the latch 3. That is, the elastic arm 14 is detachable relative to the housing 1. The housing 1 is further provided with an operating hole (not shown in the figure). The operating hole is connected to the outer surface of the housing 1. At least a portion of the latch 3 passes through the operating hole and is exposed on the outer surface of the housing 1. That is, the user can press the portion of the latch 3 exposed on the outer surface of the housing 1 through the operating hole.

[0037] When a user presses the portion of the latch 3 exposed through the operating hole on the outer surface of the housing 1, the latch 3 can be pushed by the external force, thereby causing the latch 3 to move as a whole or causing the lever on one side of the elastic arm 14 to tilt, causing the elastic arm 14 to move away from the mounting shaft 21. When the elastic arm 14 moves away from the mounting shaft 21, the engaging portion 141 on the elastic arm 14 is disengaged from the engaging groove 211 on the mounting shaft 21.

[0038] Through the above arrangement, when the user needs to remove the back key 2, he can press the fastener 3 in the operating hole to make the elastic arm 14 move away from the installation shaft 21, thereby releasing the engagement between the engaging portion 141 and the engaging groove 211. When removing the back key 2, it is not necessary to rely entirely on directly pulling the installation shaft 21 to deform the elastic arm 14. The disassembly of the back key 2 is more labor-saving and convenient, and the experience is good.

[0039] In addition, compared with the elastic arm 14 being integrally arranged with the shell 1, the elastic arm 14 is detachable, so that elastic arms 14 of different sizes can be replaced and installed on the shell 1, thereby subjecting the installation shaft 21 to different clamping forces, thereby adjusting the installation tightness of the back key 2, which is not only convenient for manufacturing and processing, but also convenient for better adapting to the user's personalized needs.

[0040] In one embodiment, a first guide bevel 1411 is provided on the side of the clamping portion 141 facing the second mounting hole 12 along the centerline of the second mounting hole 12. The second mounting hole 12 may have an entrance and an exit. The entrance refers to the opening at one end of the second mounting hole 12 through which the mounting shaft 21 enters. The side of the clamping portion 141 facing the second mounting hole 12 refers to the side of the clamping portion 141 facing the entrance. Moving away from the second mounting hole 12, the first guide bevel 1411 approaches the centerline of the second mounting hole 12, i.e., the distance from the first guide bevel 1411 to the axis gradually decreases. Therefore, when the mounting shaft 21 is inserted into the second mounting hole 12, the mounting shaft 21 can contact the first guide slope 1411, and then the first guide slope 1411 converts the thrust parallel to the axial direction of the mounting shaft 21 into a component force perpendicular to the axial direction of the mounting shaft 21, forcing the clamping part 141 to deform, so that the clamping part 141 is pushed away from the mounting shaft 21 along the axial direction perpendicular to the mounting shaft 21 until the clamping part 141 is clamped into the clamping groove 211, and the installation process of the back key 2 is smoother.

[0041] In addition, a second guiding bevel 212 can also be provided at the end of the mounting shaft 21. Along the direction in which the mounting shaft 21 is pushed into the second mounting hole 12, the second guiding bevel 212 approaches the axis of the mounting shaft 21. That is, the distance from the second guiding bevel 212 to the axis gradually decreases. Therefore, when the second guiding bevel 212 contacts the clamping portion 141, the second guiding bevel 212 converts the thrust in the axial direction parallel to the mounting shaft 21 into a component force in the axial direction perpendicular to the mounting shaft 21, forcing the clamping portion 141 to deform, so that the clamping portion 141 is pushed away from the mounting shaft 21 in the axial direction perpendicular to the mounting shaft 21, until the clamping portion 141 is clamped into the clamping groove 211, and the installation process of the back key 2 is smoother.

[0042] In one embodiment, the back key 2 further includes a connecting portion 23. The mounting shaft 21 is disposed on the connecting portion 23. The housing 1 is further provided with a mounting groove 13 connected to the second mounting hole 12. The mounting groove 13 can connect the second mounting hole 12 and the side of the housing 1 facing the back key 2. The connecting portion 23 is movably mounted in the mounting groove 13. Along the direction from the second mounting hole 12 to the mounting groove 13, the size of the mounting groove 13 gradually increases to form a moving space 131 required for the connecting portion 23 to be offset when the mounting shaft 21 rotates. When the mounting shaft 21 rotates, the mounting shaft 21 drives the connecting portion 23 to rotate until the connecting portion 23 hits the inner wall of the mounting groove 13.

[0043] Through the above arrangement, the rotation range of the installation shaft 21 can be limited by the connecting portion 23 , the range of the moving space 131 can be used as the rotation range of the installation shaft 21 , and the stroke of the back key 2 can be limited by the structure, which is stable to use.

[0044] In one embodiment, if Figure 4As shown, a represents the direction along the second mounting hole 12 to the mounting groove 13, and b represents the direction perpendicular to the second mounting hole 12 to the mounting groove 13. Along the direction perpendicular to the second mounting hole 12 to the mounting groove 13, the mounting groove 13 includes a limiting wall 132 and an inclined wall 133 that are relatively arranged. The limiting wall 132 and the inclined wall 133 can be spaced apart along the axial direction around the mounting shaft 21. The extending direction of the limiting wall 132 can be parallel to the direction from the second mounting hole 12 to the mounting groove 13. Along the direction from the second mounting hole 12 to the mounting groove 13, the inclined wall 133 is inclined in the direction away from the limiting wall 132 to form a moving space 131. When the connecting portion 23 abuts the limiting wall 132, the back key 2 moves away from the shell 1, and the trigger block 22 does not trigger a signal. When the connecting portion 23 abuts the inclined wall 133, the back key 2 moves close to the shell 1, and the trigger block 22 triggers a signal.

[0045] Through the above arrangement, the movable range of the installation shaft 21 can be changed by changing the inclination angle of the inclined wall 133 relative to the limiting wall 132 , thereby achieving a simple structure for limiting the movable range of the installation shaft 21 .

[0046] The inclination angle of the inclined wall 133 relative to the limiting wall 132 can be set according to actual conditions, such as 5 degrees, 10 degrees, 15 degrees, 20 degrees, 30 degrees, etc., which is not limited here.

[0047] In one embodiment, the back key 2 also includes a main body 24. The main body 24 can extend in a direction parallel to the back of the shell 1. The connecting portion 23 and the trigger block 22 are both arranged on the same side of the main body 24 facing the shell 1. The connecting portion 23 and the trigger block 22 are arranged at intervals. One side of the main body 24 is tilted to form an operating end 241. The operating end 241 can be located at an end of the main body 24 away from the center of the shell 1. By pressing the operating end 241, the operating end 241 can transmit external force to the mounting shaft 21. The trigger block 22 is located between the connecting portion 23 and the operating end 241. The inclined wall 133 is located on the inner wall of the mounting groove 13 facing the operating end 241. The inclined wall 133 is arranged to be inclined along the second mounting hole 12 toward the first mounting hole 11.

[0048] Therefore, when the operating end 241 is pressed, the back key 2 can rotate around the installation axis 21, and the inclination direction of the inclined wall 133 is consistent with the inclination direction of the back key 2, so that the connecting part 23 can be attached to the inclined surface. The connecting part 23 and the inclined surface are stably pressed against each other, and the force is evenly applied to each other and is not easy to wear.

[0049] In one embodiment, the housing 1 includes a bottom wall 15 and side walls 16. The bottom wall 15 is connected to the side walls 16 and has different orientations. The bottom wall 15 can be substantially perpendicular to the side walls 16. The bottom wall 15 and the side walls 16 enclose a storage space. The electrical components of the control device can be disposed within the storage space. The bottom wall 15 is located on the back of the housing 1. The side walls 16 are connected to the bottom wall 15 and are located on the side of the housing 1. A first mounting hole 11 is provided on the bottom wall 15 and extends through the bottom wall 15 to connect to the storage space. The second mounting hole 12 and the mounting slot 13 are both provided on the side wall 16 and extend through the side wall 16 to connect to the storage space. The first mounting hole 11 can be oriented parallel to the direction of gravity. A clamping portion 141 is provided on the inner side of the side wall 16 facing the storage space. The mounting shaft 21 extends through the second mounting hole 12 and extends through the side wall 16. That is, the mounting shaft 21 is at least partially located within the housing 1. The mounting shaft 21 is provided with a clamping slot 211. The engaging groove 211 is engaged with the engaging portion 141 .

[0050] With this arrangement, the second mounting hole 12 can be located on the side wall 16 rather than the bottom wall 15, making the mounting shaft 21 less susceptible to detachment due to gravity after installation. Furthermore, the engaging portion 141 is located on the inner side of the housing 1, making the engagement between the engaging portion 141 and the engaging groove 211 less susceptible to accidental release due to external impact, ensuring a stable installation of the back key 2.

[0051] In one embodiment, a mounting protrusion 161 is provided on the inner side surface of the side wall 16. The second mounting hole 12 and the mounting groove 13 both pass through the mounting protrusion 161. An elastic arm 14 is provided on the end surface of the mounting protrusion 161 facing away from the inner side surface. A clamping portion 141 is provided on the elastic arm 14. When the mounting shaft 21 moves in the second mounting hole 12, the elastic arm 14 is deformed to enable the clamping portion 141 to engage with or disengage from the clamping groove 211. The second mounting hole 12 can be opened at the center position of the side of the mounting protrusion 161 facing away from the outside world. The second mounting hole 12 passes through the side wall 16 and the mounting protrusion 161 to connect the interior of the shell 1 with the external environment. The elastic arm 14 can extend toward the inside of the shell 1 along the center line of the second mounting hole 12, and the clamping portion 141 can be provided at the end of the elastic arm 14 away from the external environment.

[0052] Through the above arrangement, the second mounting hole 12 and the mounting groove 13 are opened on the mounting protrusion 161, which can enhance the strength of the mounting position of the back key 2, so that the shell 1 is not easily deformed here to cause the back key 2 to detach, and the back key 2 is stably installed.

[0053] In one embodiment, the control device 100 further includes a stop block 134. The stop block 134 is provided on the inner wall of the mounting groove 13 or the stop block 134 is provided on the housing 1. The stop block 134 is at least partially aligned with the mounting groove 13. When the connecting portion 23 is movably installed in the mounting groove 13, it is stopped by the stop block 134. When the back key 2 is installed, the connecting portion 23 gradually enters the mounting groove 13 along an axial direction parallel to the mounting shaft 21 until the connecting block abuts against the stop block 134. At this time, the connecting portion 23 is limited by the stop block 134, so that the mounting shaft 21 cannot be pushed in further. Therefore, the user can clearly feel the reaction force of the limit when installing the back key 2, and cannot over-push the mounting shaft 21 to cause damage to the housing 1 or the back key 2, and the installation experience is good.

[0054] The terms "first", "second" and "third" in this application are only used for descriptive purposes and should not be understood as indicating the number of the indicated technical features. Thus, the features defined as "first", "second" and "third" can explicitly or implicitly include at least one of these features. In the embodiments of the present application, all directional indications (such as up, down, left, right, front, back ...) are only used to explain the relative positional relationship, movement, etc. between the various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication also changes accordingly. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device that includes a series of steps or units is not limited to the listed steps or units, but optionally also includes steps or units that are not listed, or optionally also includes other steps or units inherent to these processes, methods, products or devices.

[0055] The above description is merely an embodiment of the present application and does not limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made using the contents of the present application specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A control device, characterized in that: include: A housing, wherein the housing is provided with a first mounting hole and a second mounting hole, wherein a centerline direction of the first mounting hole intersects a centerline direction of the second mounting hole; Back key, the back key is provided with a mounting shaft and a trigger block, the trigger block is mounted in the first mounting hole, and the mounting shaft is movably mounted in the second mounting hole; wherein, When the back key is pressed, the trigger block triggers a signal, and the mounting shaft rotates around the axis of the mounting shaft in the second mounting hole.

2. The control device according to claim 1, characterized in that: A clamping groove is provided on the installation shaft, and a clamping portion is further provided on the shell. The clamping portion can be releasably clamped to the clamping groove.

3. The control device according to claim 2, characterized in that: The control device further includes an elastic arm, which is arranged on the housing and extends along an axial direction parallel to the installation shaft. The clamping portion is arranged on the elastic arm.

4. The control device according to claim 3, characterized in that: The control device includes a buckle, which is detachably arranged on the housing, and the elastic arm is arranged on the buckle; The shell is further provided with an operating hole, and the latch at least partially passes through the operating hole and is exposed on the outer surface of the shell.

5. The control device according to claim 1, characterized in that: The back key further includes a connecting portion, and the mounting shaft is arranged on the connecting portion; The housing is further provided with a mounting groove communicating with the second mounting hole, and the connecting portion is movably mounted in the mounting groove; Along the direction from the second mounting hole to the mounting groove, the size of the mounting groove gradually increases to form a movement space required for the connection part to deviate when the mounting shaft rotates.

6. The control device according to claim 5, characterized in that: Along a direction perpendicular to the second mounting hole to the mounting groove, the mounting groove includes a limiting wall and an inclined wall arranged opposite to each other; Along the direction from the second mounting hole to the mounting groove, the inclined wall is inclined in a direction away from the limiting wall to form the moving space.

7. The control device according to claim 6, characterized in that: The back key further comprises a main body, the connecting portion and the trigger block are both arranged on the same side of the main body facing the housing, and one side of the main body is tilted and extended to form an operating end; The trigger block is located between the connecting portion and the operating end; The inclined wall is located on the inner wall of the mounting groove facing the operating end.

8. The control device according to claim 5, characterized in that: The housing includes a bottom wall and a side wall, the bottom wall is connected to the side wall and faces different directions, the bottom wall and the side wall enclose an accommodating space, the first mounting hole is provided on the bottom wall and passes through the bottom wall to connect to the accommodating space, and the second mounting hole and the mounting groove are both provided on the side wall and pass through the side wall to connect to the accommodating space; A clamping portion is provided on the inner side surface of the side wall facing the accommodating space, the installation shaft passes through the side wall through the second installation hole, and the installation shaft is provided with a clamping groove, which is clamped with the clamping portion.

9. The control device according to claim 8, characterized in that: A mounting protrusion is convexly provided on the inner side surface, and the second mounting hole and the mounting groove both pass through the mounting protrusion; An elastic arm is protruded from the end surface of the mounting protrusion facing away from the inner side surface, and a clamping portion is protruded from the elastic arm; When the mounting shaft moves in the second mounting hole, the elastic arm is pressed against and deformed so that the engaging portion engages with or disengages from the engaging groove.

10. The control device according to claim 5, characterized in that: Also includes a stop block, wherein The stop block is arranged on the inner wall of the mounting groove, or the stop block is arranged on the housing, and the stop block is at least partially aligned with the mounting groove; When the connecting portion is movably installed in the installation groove, it is stopped by the stopping block.

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