Differential lock switch structure and vehicle

Abstract

The utility model provides a differential lock switch structure and a vehicle, and relates to the technical field of locking devices. The differential lock switch structure comprises a moving assembly, the moving assembly is partially arranged in a sealing cavity of a working cylinder body of the vehicle and moves relative to the working cylinder body, and the moving assembly is connected with a differential mechanism of the vehicle; the detection piece is inserted into the working cylinder body, part of the detection piece is arranged in the sealing cavity, the detection piece is electrically connected with the indicating piece, and a gap is formed between the end face of the moving assembly and the detection piece; the moving assembly is configured to move relative to the working cylinder body when the differential mechanism is locked or unlocked so as to adjust the distance. The detection piece is configured to control the indicating piece to indicate that the differential mechanism is locked when the distance is larger than a preset distance; and when the distance is smaller than or equal to the preset distance, the indicating piece is controlled to indicate the differential to be unlocked. The state of the differential lock is accurately indicated in a non-contact mode by detecting the distance, so that mechanical abrasion is reduced, and the service life is prolonged.

Description

Technical Field

[0001] This application relates to the field of locking device technology, and in particular to a differential lock switch structure and vehicle. Background Art

[0002] A differential lock is a structure used to lock the differential. When one drive axle of a vehicle is spinning freely, the differential lock can quickly lock the differential, making the two drive axles rigidly connected. This will transfer most of the torque to the non-slipping drive axle, allowing the vehicle to continue driving and thus improving the vehicle's ability to pass through harsh road conditions such as mud and ice.

[0003] In existing technology, the differential lock of heavy-duty drive axles (such as heavy-duty truck axles) adopts a mechanical pressure switch differential lock structure. The on / off state of the differential lock is indicated by the opening and closing of the mechanical pressure switch. When the differential lock is not engaged, the pressure switch push rod is compressed by the piston rod spring force, the moving contact of the pressure switch separates, and the signal is disconnected, indicating that the differential lock is not engaged. When the differential lock is engaged, the pressure switch push rod is ejected outward by the internal spring force, the moving contact contacts, the signal is connected, and the differential lock is engaged.

[0004] However, the pressure switch push rod is constantly under stress and is prone to failure. The pressure switch moving contact is in direct contact with the pressure switch push rod, and the pressure switch moving contact is easily subjected to repeated impacts, causing the pressure switch moving contact to fail. Utility Model Content

[0005] This application provides a differential lock switch structure and vehicle to solve the problem that the existing pressure switch push rod is often under stress and is prone to failure, and the pressure switch moving contact is in direct contact with the pressure switch push rod, and the pressure switch moving contact is easily subjected to repeated impacts, causing the pressure switch moving contact to fail.

[0006] To achieve the above objectives, the technical solution of this application is as follows:

[0007] On one hand, this application provides a differential lock switch structure for a differential lock device, comprising: a moving component, the moving component being partially disposed within a sealed cavity of the working cylinder of a vehicle and movable relative to the working cylinder, the moving component being used to connect with the differential of the vehicle; a detection element, inserted into the working cylinder and partially disposed within the sealed cavity, opposite to the moving component, the detection element being used to detect the position of the moving component, the detection element being used to electrically connect with an indicator of the vehicle, and a gap being present between the end face of the moving component and the detection element; the moving component being configured to move relative to the working cylinder when the differential is locked or unlocked, thereby adjusting the gap; the detection element being configured to control the indicator to indicate differential lock when the gap is greater than a preset gap; and to control the indicator to indicate differential unlock when the gap is less than or equal to the preset gap.

[0008] In one possible implementation, the differential lock switch structure in this application embodiment has a mounting hole on the working cylinder body, which communicates with the sealing cavity. The detection element is inserted into the working cylinder body through the mounting hole. The end of the detection element facing the moving component has a sensing part, which is used to detect the position of the moving component. The sensing part is located on the extension line of the moving component's moving direction.

[0009] In one possible implementation, the differential lock switch structure in this application embodiment includes a piston rod and a shift fork as the moving component. The shift fork is sleeved on the piston rod, and one end of the shift fork is used to connect with the differential. The piston rod is slidably disposed in the working cylinder body.

[0010] In one possible implementation, the differential lock switch structure in this application embodiment further includes a return spring in the moving component. The return spring is sleeved on the piston rod, with one end connected to the shift fork and the other end connected to the working cylinder. The return spring extends to reset the piston rod.

[0011] In one possible implementation, the differential lock switch structure in this application embodiment further includes an adjusting member, which is sleeved on the piston rod, and the shift fork is sleeved on the adjusting member. The adjusting member is used to adjust the coaxiality of the shift fork.

[0012] In one possible implementation, the differential lock switch structure in this application embodiment further includes a guide member disposed within a sealed cavity to provide guidance for the moving component.

[0013] On the other hand, this application also provides a vehicle including a body and a differential lock switch structure of any of the above embodiments disposed on the body.

[0014] In one possible implementation, the vehicle in this application embodiment includes a working cylinder body, which includes a cylinder head and a main reduction housing. The cylinder head is disposed on one end of the main reduction housing to form a sealed cavity together with the main reduction housing.

[0015] In one possible implementation, the vehicle in this application embodiment further includes a seal disposed between the cylinder head and the main reduction housing to seal the sealing cavity.

[0016] In one possible implementation, the vehicle in this application embodiment has a main reduction housing having a first mounting portion and a second mounting portion. The first mounting portion is disposed toward the cylinder head, the large end of the movable component is slidably disposed on the first mounting portion, and the small end of the movable component is slidably disposed on the second mounting portion.

[0017] This application provides a differential lock switch structure and a vehicle. The differential lock switch structure includes: a moving component, which is partially disposed in the sealed cavity of the working cylinder of the vehicle and moves relative to the working cylinder, and is used to connect with the differential of the vehicle; and a detection element, which is inserted into the working cylinder and partially disposed in the sealed cavity, opposite to the moving component, and is used to detect the position of the moving component, and is used to electrically connect with the vehicle's indicator. By maintaining a gap between the end face of the moving component and the detection element, direct contact between the moving component and the detection element is avoided, preventing damage and extending the service life of the detection element. When the differential is locked or unlocked, the moving component moves relative to the working cylinder to adjust the gap. When the differential lock is open, the gap between the moving component and the detection element increases; when the gap is greater than a preset gap, the detection element controls the indicator to indicate that the differential is locked. When the differential lock is not open or is reset, the gap between the moving component and the detection element decreases; when the gap is less than or equal to a preset gap, the detection element controls the indicator to indicate that the differential is unlocked. This achieves non-contact, precise indication of the differential lock status, reduces mechanical wear, improves the accuracy and stability of detection, and extends the service life of the detection element. Attached Figure Description

[0018] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.

[0019] Figure 1 This is a schematic diagram of the differential lock switch structure and the vehicle structure provided in the embodiments of this application;

[0020] Figure 2 for Figure 1 A schematic diagram of the structure of the center differential lock switch;

[0021] Figure 3 for Figure 1 A schematic diagram of the structure of the cylinder head.

[0022] Explanation of reference numerals in the attached figures:

[0023] 100-Cylinder head;

[0024] 110 - Seals;

[0025] 120 - First connecting part;

[0026] 130 - Second connecting part;

[0027] 140-groove;

[0028] 150 - Third connecting part;

[0029] 200 - Main reduction gear housing;

[0030] 210 - First Installation Section;

[0031] 220 - Second Installation Section;

[0032] 230 - Guide component;

[0033] 240 - Adjustment part;

[0034] 300 - Mobile Components;

[0035] 310 - Piston rod;

[0036] 320-Shift Fork;

[0037] 330 - Return spring;

[0038] 400 - Detection component; 410 - Sensing unit;

[0039] 500-Connector.

[0040] The above drawings illustrate specific embodiments of the present application, which will be described in more detail below. These drawings and the textual description are not intended to limit the scope of the present application in any way, but rather to illustrate the concepts of the present application to those skilled in the art by reference to specific embodiments. DETAILED DESCRIPTION

[0041] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numbers in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this application as detailed in the appended claims.

[0042] It should be noted that in the description of the embodiments of this application, the terms "upper", "lower", "inner", "outer" and other terms indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of description, and are not intended to indicate or imply that the device or component must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the embodiments of this application.

[0043] Furthermore, it should be noted that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0044] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "fixation," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication between two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0045] A differential lock is a structure used to lock the differential. When one drive axle of a vehicle is spinning freely, the differential lock can quickly lock the differential, making the two drive axles rigidly connected. This will transfer most of the torque to the non-slipping drive axle, allowing the vehicle to continue driving and thus improving the vehicle's ability to pass through harsh road conditions such as mud and ice.

[0046] In existing technology, the differential lock of heavy-duty drive axles (such as heavy-duty truck axles) adopts a mechanical pressure switch differential lock structure. The on / off state of the differential lock is indicated by the opening and closing of the mechanical pressure switch. When the differential lock is not engaged, the pressure switch push rod is compressed by the piston rod spring force, the moving contact of the pressure switch separates, and the signal is disconnected, indicating that the differential lock is not engaged. When the differential lock is engaged, the pressure switch push rod is ejected outward by the internal spring force, the moving contact contacts, the signal is connected, and the differential lock is engaged.

[0047] However, the pressure switch push rod is constantly under stress and is prone to failure. The pressure switch moving contact is in direct contact with the pressure switch push rod, and the pressure switch moving contact is easily subjected to repeated impacts, causing the pressure switch moving contact to fail.

[0048] In view of the above, this application provides a differential lock switch structure and a vehicle. The differential lock switch structure includes: a moving component, which is partially disposed within a sealed cavity of the working cylinder of the vehicle and moves relative to the working cylinder; the moving component is used to connect with the differential of the vehicle; a detection element, which is inserted into the working cylinder and partially disposed within the sealed cavity, opposite to the moving component; the detection element is used to detect the position of the moving component and is electrically connected to an indicator of the vehicle; a gap exists between the end face of the moving component and the detection element; the moving component is configured to move relative to the working cylinder when the differential is locked or unlocked to adjust the gap; the detection element is configured to control the indicator to indicate that the differential is locked when the gap is greater than a preset gap; and to control the indicator to indicate that the differential is unlocked when the gap is less than or equal to the preset gap. By maintaining a gap between the end face of the moving component and the detection element, direct contact between the moving component and the detection element is avoided, preventing damage and extending the service life of the detection element. When the differential is locked or unlocked, the moving component moves relative to the working cylinder to adjust the gap. When the differential lock is open, the gap between the moving component and the detection element increases; when the gap is greater than a preset gap, the detection element controls the indicator to indicate that the differential is locked. When the differential lock is not open or is reset, the gap between the moving component and the detection element decreases; when the gap is less than or equal to a preset gap, the detection element controls the indicator to indicate that the differential is unlocked. This achieves non-contact, precise indication of the differential lock status, reduces mechanical wear, improves the accuracy and stability of detection, and extends the service life of the detection element.

[0049] To achieve the above objectives, the technical solution of this application is as follows:

[0050] The following is combined Figures 1 to 3 The present application will be described in detail with reference to specific embodiments. Figure 1 This is a schematic diagram of the differential lock switch structure and the vehicle structure provided in the embodiments of this application; Figure 2 for Figure 1 A schematic diagram of the structure of the center differential lock switch; Figure 3 for Figure 1 A schematic diagram of the cylinder head structure. It should be noted that, as... Figure 2 As shown, the distance between the end face of the moving component 300 and the detection component 400 can be represented by S.

[0051] On one hand, this application provides a differential lock switch structure, including: a moving component 300, which is partially disposed within a sealed cavity of the working cylinder of a vehicle and moves relative to the working cylinder, and is used to connect with the differential of the vehicle; a detection element 400, which is inserted into the working cylinder and partially disposed within the sealed cavity, opposite to the moving component 300, and is used to detect the position of the moving component 300, and is used to electrically connect with an indicator of the vehicle, and there is a gap between the end face of the moving component 300 and the detection element 400; the moving component 300 is configured to move relative to the working cylinder when the differential is locked or unlocked to adjust the gap; the detection element 400 is configured to control the indicator to indicate that the differential is locked when the gap is greater than a preset gap; and to control the indicator to indicate that the differential is unlocked when the gap is less than or equal to the preset gap.

[0052] Specifically, the vehicle's working cylinder block includes a cylinder head 100 and a main reduction housing 200, with the cylinder head 100 covering one end of the main reduction housing 200. The cylinder head 100 and the main reduction housing 200 are detachably connected. Specifically, it also includes a connector 500. The cylinder head 100 has a first connecting portion 120, and the main reduction housing 200 has a second connecting portion 130. The connector 500 passes sequentially through the first connecting portion 120 and the second connecting portion 130 to connect the cylinder head 100 and the main reduction housing 200. The connector 500 can be a bolt or a screw; this embodiment does not limit this. The first connecting portion 120 and the second connecting portion 130 can both be threaded holes or tapered connecting holes; this embodiment does not limit this either.

[0053] The cylinder head 100 and the main reduction housing 200 form a sealed cavity. It should be noted that a sealing ring is also provided between the cylinder head 100 and the main reduction housing 200 to ensure the sealing of the cavity and prevent external interference.

[0054] The movable component 300 is partially disposed within the sealed cavity. For example, the movable component 300 has a large end and a small end. The large end of the movable component 300 is disposed within the sealed cavity. When locking or unlocking the vehicle's differential, the movable component 300 moves relative to the main reduction housing 200.

[0055] The moving component 300 includes a piston rod 310, a shift fork 320, and a return spring 330. The shift fork 320 and the return spring 330 are both sleeved on the piston rod 310. One end of the return spring 330 is connected to the shift fork 320, and the other end is connected to the main reduction housing 200. The piston rod 310 is slidably disposed within the main reduction housing 200.

[0056] It should be noted that the indicator can be an indicator light or a digital display screen, or it can dynamically display the distance between the large end face of the piston rod 310 and the detection element 400 in real time.

[0057] A detection element 400 is disposed on and passes through the cylinder head 100, and is positioned relative to the moving assembly 300. The detection element 400 is electrically connected to an indicator light of the vehicle, and a gap is provided between the end face of the moving assembly 300 and the detection element 400. For example, the end of the detection element 400 facing the moving assembly 300 has a sensing chip to sense the distance between it and the large end face of the piston rod 310, thereby triggering an on / off signal through an inductive switch. It should be noted that the detection element 400 can be an inductive switch or a distance sensor; this embodiment of the application does not impose any limitation on this.

[0058] After the differential lock is engaged, driven by air pressure, the moving component 300 moves toward the main reduction housing 200. The distance between the large end face of the moving component 300 and the detection element 400 increases, exceeding the distance that the detection element 400 can sense. The signal of the detection element 400 is disconnected and transmitted to the indicator. The indicator lights up, indicating that the differential is locked.

[0059] When the differential lock is not engaged, the moving component 300 moves outward toward the main reduction housing 200 and returns to its initial position. The distance between the large end face of the moving component 300 and the detection element 400 decreases. Within the range that the detection element 400 can detect, the signal of the detection element 400 is turned on and transmitted to the indicator. When the indicator turns off, it indicates that the differential is unlocked.

[0060] An initial distance is provided between the detection element 400 and the moving component 300 to prevent direct triggering and damage to the detection element 400. It should be noted that the initial distance is the distance between the detection element 400 and the moving component 300, that is, the distance between the initial position of the moving component 300 and the detection element 400.

[0061] Specifically, when the distance is greater than a preset distance, the control indicator indicates that the differential is locked; when the distance is less than or equal to the preset distance, the control indicator indicates that the differential is unlocked. It can be understood that the detection element 400 can be a sensor switch, and the distance can be the sensing distance. When the sensing distance is greater than the preset distance value, the signal of the detection element 400 is disconnected, causing the indicator light to illuminate; when the sensing distance is less than or equal to the preset distance value, the signal of the detection element 400 is connected, causing the indicator light to turn off. By adjusting the distance, the signal of the detection element 400 is connected or disconnected, and this on / off signal is fed back to the indicator light on the instrument panel to indicate the open or closed state of the differential lock.

[0062] When the differential lock is engaged, the moving component 300 moves into the main reduction housing 200. At this time, the distance between the moving component 300 and the detection element 400 increases. When the sensing distance is greater than the preset distance value, the signal of the detection element 400 is activated, so that the indicator light is turned on.

[0063] When the differential lock is closed, the moving component 300 moves to the outside of the main reduction housing 200 and returns to the initial position. At this time, the distance between the moving component 300 and the detection element 400 increases. When the piston rod senses a distance less than or equal to a preset distance value, the signal of the detection element 400 is disconnected, and the indicator light goes out.

[0064] Therefore, in this embodiment, a gap is provided between the end face of the moving component 300 and the detection element 400 to avoid direct contact between the moving component 300 and the detection element 400, thus preventing damage to the detection element 400 and extending the service life of the detection element 400. When the differential is locked or unlocked, the moving component 300 moves relative to the working cylinder to adjust the gap. When the differential lock is open, the gap between the moving component 300 and the detection element 400 increases. When the gap is greater than a preset gap, the detection element 400 controls the indicator to indicate that the differential is locked. When the differential lock is not open or is reset, the gap between the moving component 300 and the detection element 400 decreases. When the gap is less than or equal to the preset gap, the detection element 400 controls the indicator to indicate that the differential is unlocked. This achieves non-contact, precise indication of the differential lock status, reduces mechanical wear, improves the accuracy and stability of detection, and extends the service life of the detection element 400. In one possible implementation, the differential lock switch structure in this application embodiment has a mounting hole on the working cylinder body, which communicates with the sealing cavity. The detection element 400 is inserted into the working cylinder body through the mounting hole. The end of the detection element 400 facing the moving component 300 has a sensing part 410, which is used to detect the position of the moving component 300. The sensing part 410 is located on the extension line of the moving direction of the moving component 300.

[0065] The detection element 400 has a third connecting portion 150 on its periphery. The cylinder head 100 has a mounting hole that communicates with the sealing cavity. The third connecting portion 150 is screwed into the mounting hole; the third connecting portion 150 can be threaded. The third connecting portion 150 can be located on the periphery of the middle of the detection element 400, or on the periphery of the end of the detection element 400 facing the moving assembly 300. It should be noted that the sensing part 410 is located on the axial extension line of the piston rod 310.

[0066] It should be noted that the end face of the sensing part 410 can be flush with the end face of the mounting hole, and the end face of the sensing part 410 can also be located inside the end face of the mounting hole (e.g., the sensing part 410 is located inside the mounting hole) or outside the end face of the mounting hole (e.g., the sensing part 410 is located outside the mounting hole). For example, when the end face of the sensing part 410 is located outside the end face of the mounting hole, the cylinder head 100 has a groove 140 at the end facing the main reduction housing 200. The groove 140 is used to accommodate the sensing part 410, and a gap is provided between the sensing part 410 and the main reduction housing 200.

[0067] In one possible implementation, the differential lock switch structure in this application embodiment includes a moving component 300 comprising a piston rod 310 and a shift fork 320. The shift fork 320 is sleeved on the piston rod 310, and one end of the shift fork 320 is used to connect with the differential. The piston rod 310 is slidably disposed in the working cylinder body.

[0068] After the differential lock is engaged, driven by air pressure, the piston rod 310 moves toward the main reduction housing 200, causing the shift fork 320 to move in sync with the main reduction housing 200. The distance between the large end face of the piston rod 310 and the detection element 400 increases, exceeding the distance that the detection element 400 can sense. The signal of the detection element 400 is disconnected and transmitted to the indicator, which lights up, indicating that the differential is locked.

[0069] When the differential lock is not engaged, the piston rod 310 moves outward toward the main reduction housing 200 and returns to its initial position. The distance between the large end face of the piston rod 310 and the detection element 400 decreases. Within the range that the detection element 400 can detect, the signal of the detection element 400 is turned on and transmitted to the indicator. When the indicator turns off, it indicates that the differential is unlocked.

[0070] In one possible implementation, the differential lock switch structure in this application embodiment, the moving component 300 further includes a return spring 330, which is sleeved on the piston rod 310. One end of the return spring 330 is connected to the shift fork 320, and the other end is connected to the working cylinder. The return spring 330 extends to reset the piston rod 310.

[0071] When the differential lock is not engaged, the piston rod 310 is moved outward toward the main reduction housing 200 by the elastic force of the return spring 330, returning to its initial position. The distance between the large end face of the piston rod 310 and the detection element 400 decreases. Within the range that the detection element 400 can detect, the signal of the detection element 400 is turned on and transmitted to the indicator. When the indicator turns off, it indicates that the differential is unlocked.

[0072] In one possible implementation, the differential lock switch structure in this application embodiment further includes an adjusting member 240, which is sleeved on the piston rod 310, and a shift fork 320 is sleeved on the adjusting member 240. The adjusting member 240 is used to adjust the coaxiality of the shift fork 320.

[0073] It should be noted that the adjusting component 240 can be an adjusting shim to adjust the coaxiality of the shift fork 320 and the piston rod 310.

[0074] In one possible implementation, the differential lock switch structure in this application embodiment further includes a guide member 230, which is disposed in a sealed cavity to provide guidance for the moving component 300.

[0075] Specifically, it also includes a guide member 230 and an adjusting member 240. The guide member 230 is sleeved on the inner wall of the first mounting part 210. The guide member 230 is sleeved with the piston rod 310, and the piston rod 310 slides relative to the guide member 230. The guide member 230 can be a bushing.

[0076] On the other hand, this application also provides a vehicle including a body and a differential lock switch structure of any of the above embodiments disposed on the body.

[0077] The vehicle can be a truck, such as a heavy-duty truck, a light-duty truck, or an electric truck. Through the differential lock switch structure, the vehicle can accurately reflect the working status of the differential. The driver can understand the differential's operation in a timely manner according to road conditions and make more reasonable driving operations, improving the vehicle's driving performance and safety under various complex road conditions. At the same time, the sealed design of this structure ensures the reliability of the detection components in harsh environments and extends their service life.

[0078] When a vehicle enters complex road conditions, such as mud, sand, or off-road climbing, where differential locking is required to enhance traction, the differential lock engages, and the differential engages. When the detector 400 detects a distance greater than a preset distance, the control indicator changes its state, for example, the indicator light turns red, informing the driver that the differential lock is engaged and the differential is locked. The wheels on both sides of the vehicle will rotate at the same speed, thereby providing greater traction to help the vehicle get out of trouble or drive stably.

[0079] In one possible implementation, the body includes a working cylinder body, which includes a cylinder head 100 and a main reduction housing 200. The cylinder head 100 covers one end of the main reduction housing 200 to form a sealed cavity together with the main reduction housing 200.

[0080] The working cylinder is located on the chassis of the vehicle, and the cylinder head 100 is tightly covered on one end of the main reduction housing 200. A seal 110 is installed between the two to ensure that the sealing cavity formed together has good sealing performance.

[0081] In one possible implementation, a seal 110 is also included, which is disposed between the cylinder head 100 and the main reduction housing 200 to seal the sealing cavity. The seal 110 improves the performance of the sealing cavity, and the detection element adopts a fully sealed structure, providing good waterproof and dustproof performance.

[0082] In some embodiments, an O-ring is also included, which is used to communicate with the sealing cavity to allow gas to pass through and drive the piston rod 310 to move.

[0083] In one possible implementation, the main reduction housing 200 has a first mounting portion 210 and a second mounting portion 220, the first mounting portion 210 being disposed toward the cylinder head 100, the large end of the moving component 300 being slidably disposed on the first mounting portion 210, and the small end of the moving component 300 being slidably disposed on the second mounting portion 220.

[0084] The two ends of the piston rod 310 are respectively disposed on the first mounting part 210 and the second mounting part 220. The large end of the piston rod 310 is slidably disposed on the first mounting part 210, and the small end of the piston rod 310 is slidably disposed on the second mounting part 220. The other end of the piston rod 310 return spring 330 is connected to the second mounting part 220. The first mounting part 210 surrounds and forms a sealed cavity.

[0085] Other embodiments of this application will readily occur to those skilled in the art upon consideration of the specification and practice of the utility models disclosed herein. This application is intended to cover any variations, uses, or adaptations of this application that follow the general principles of this application and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only, and the true scope and spirit of this application are indicated by the following claims.

[0086] It should be understood that this application is not limited to the precise structure described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of this application is limited only by the appended claims.

Claims

1. A differential lock switch structure, characterized in that, include: A movable assembly (300) is partially disposed within a sealed cavity of the working cylinder of the vehicle and is movable relative to the working cylinder. The movable assembly (300) is used to connect to the differential of the vehicle. A detection element (400) is inserted into the working cylinder and partially disposed in the sealed cavity, opposite to the moving assembly (300). The detection element (400) is used to detect the position of the moving assembly (300). The detection element (400) is used to electrically connect with the vehicle's indicator. There is a gap between the end face of the moving assembly (300) and the detection element (400). The moving component (300) is configured to move relative to the working cylinder block to adjust the gap when the differential is locked or unlocked; the detection element (400) is configured to control the indicator to indicate that the differential is locked when the gap is greater than a preset gap; and to control the indicator to indicate that the differential is unlocked when the gap is less than or equal to the preset gap.

2. The differential lock switch structure according to claim 1, characterized in that, The working cylinder has a mounting hole that communicates with the sealing cavity. The detection element (400) is inserted into the working cylinder through the mounting hole. The end of the detection element (400) facing the moving assembly (300) has a sensing part (410). The sensing part (410) is used to detect the position of the moving assembly (300). The sensing part (410) is located on the extension line of the moving direction of the moving assembly (300).

3. The differential lock switch structure according to claim 1, characterized in that, The moving assembly (300) includes a piston rod (310) and a shift fork (320), the shift fork (320) being sleeved on the piston rod (310), one end of the shift fork (320) being used to connect to the differential, and the piston rod (310) being slidably disposed in the working cylinder along its axial direction.

4. The differential lock switch structure according to claim 3, characterized in that, The moving assembly (300) also includes a return spring (330) which is sleeved on the piston rod (310). One end of the return spring (330) is connected to the shift fork (320), and the other end is connected to the working cylinder. The return spring (330) extends to reset the piston rod (310).

5. The differential lock switch structure according to claim 3, characterized in that, It also includes an adjusting member (240), which is sleeved on the piston rod (310), and the shift fork (320) is sleeved on the adjusting member (240). The adjusting member (240) is used to adjust the coaxiality of the shift fork (320).

6. The differential lock switch structure according to any one of claims 1-5, characterized in that, It also includes a guide (230) disposed within the sealed cavity to provide guidance for the moving assembly (300).

7. A vehicle, characterized in that, It includes a body and a differential lock switch structure of any one of claims 1-6 disposed on the body.

8. The vehicle according to claim 7, characterized in that, The main body includes a working cylinder body, which includes a cylinder head (100) and a main reduction housing (200). The cylinder head (100) covers one end of the main reduction housing (200) to form the sealed cavity together with the main reduction housing (200).

9. The vehicle according to claim 8, characterized in that, It also includes a seal (110) disposed between the cylinder head (100) and the main reduction housing (200) to seal the sealing cavity.

10. The vehicle according to claim 8 or 9, characterized in that, The main reduction housing (200) has a first mounting portion (210) and a second mounting portion (220). The first mounting portion (210) is disposed toward the cylinder head (100). The large end of the moving component (300) is slidably disposed on the first mounting portion (210), and the small end of the moving component (300) is slidably disposed on the second mounting portion (220).

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