Protective shell of magnetic field sensor

Abstract

The utility model provides a magnetic field sensor protective shell, belongs to the field of magnetic field sensors, and aims to solve the problem that an existing magnetic field sensor protective shell cannot be conveniently disassembled and assembled, the magnetic field sensor protective shell comprises a shell, a cover plate and a limiting block, the top end of the shell is fixedly connected with a sealing ring, and a clamping groove is formed in the side end of the top of the shell; a storage groove is formed in the side end of the cover plate, a first spring is welded and fixed in the storage groove, a clamping rod is welded and fixed to the first spring, the clamping rod is slidably connected to the side end of the cover plate in a penetrating mode, the end of the clamping rod is connected into the clamping groove in a clamped mode, and damping cylinders are welded and fixed to the cover plate and the shell correspondingly; the damping cylinder is sleeved with a damping spring. Through cooperation of the clamping grooves and the clamping rods, dismounting and mounting between the shell and the cover plate can be conveniently completed, and then convenient and stable clamping mounting and dismounting work can be performed on the sensor body, so that convenience of subsequent overhaul and maintenance work of the sensor body can be ensured.

Description

Technical Field

[0001] This utility model relates to the field of magnetic field sensors, and more specifically, to a protective housing for a magnetic field sensor. Background Technology

[0002] Magnetic field sensors play an indispensable role in many fields such as modern industry, automotive electronics, aerospace, and consumer electronics. By converting magnetic field signals into electrical signals, they enable precise measurement of parameters such as magnetic field strength and direction. Therefore, magnetic field sensors are key components of modern electronic systems. With the development of technologies such as autonomous driving, the Internet of Things, and artificial intelligence, their market demand and technological innovation will continue to grow.

[0003] Existing magnetic field sensors have some problems in practical use. For example, an inductive magnetic field sensor with publication number CN211086634U uses a housing that can seal and protect the sensor with a sealing component. However, the housing and the sealing component are fixedly connected with a glue, so the housing cannot be easily disassembled when the magnetic field sensor needs to be inspected and maintained, which makes subsequent inspection and maintenance of the magnetic field sensor inconvenient and its practicality poor. Furthermore, the existing protective housings for magnetic field sensors cannot provide convenient and stable buffer protection for the magnetic field sensor in actual operation, nor can they provide moisture protection. Therefore, we have made improvements and proposed a protective housing for magnetic field sensors. Utility Model Content

[0004] The purpose of this utility model is to address the problems of existing protective shells for magnetic field sensors, which cannot be easily disassembled and assembled, cannot provide convenient and stable buffer protection for the magnetic field sensor, and cannot provide moisture protection for the magnetic field sensor.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] A protective housing for the magnetic field sensor is provided to address the aforementioned issues.

[0007] The application is as follows:

[0008] The device includes a housing, a cover plate, and a limiting block. A sealing ring is fixedly connected to the top of the housing. A slot is formed on the top side of the housing. A storage slot is formed on the side of the cover plate. A first spring is welded and fixed in the storage slot. A locking rod is welded and fixed to the first spring. The locking rod is slidably connected to the side of the cover plate, and its end is engaged in the slot. Damping cylinders are welded and fixed to both the cover plate and the housing. A shock-absorbing spring is sleeved on the damping cylinder. Both the damping cylinder and the shock-absorbing spring are welded and fixed to the limiting block. A sensor body is disposed inside the housing. A plug-in socket is disposed at the bottom of the sensor body. A connector is connected to the plug-in socket. A cable is connected to the connector. A fixing cylinder and an air storage cylinder are welded and fixed to the bottom of the housing. A rubber airbag is fixedly connected inside the fixing cylinder.

[0009] As a preferred technical solution of this application, the sealing ring is fitted with the cover plate, the cover plate is fitted with the housing, the storage grooves are symmetrically distributed on both sides of the cover plate, and the storage grooves correspond one-to-one with the slots via locking rods.

[0010] As a preferred technical solution of this application, the damping cylinders are distributed at equal angles on the inner bottom surface of the shell and the bottom surface of the cover plate. The damping cylinders correspond one-to-one with the shock-absorbing springs. The limiting block is generally circular. The outer wall of the limiting block fits against the inner wall of the shell. The cross-section of the limiting block is a right triangle.

[0011] As a preferred technical solution of this application, a limiting frame is welded and fixed on the cover plate, a second spring is welded and fixed on the limiting frame, a stop block is welded and fixed on the second spring, the stop block is slidably connected through the limiting frame, a connecting plate is slidably connected inside the limiting frame, and a mesh frame is welded and fixed on the connecting plate.

[0012] As a preferred technical solution of this application, the blocks are symmetrically distributed on both sides of the limiting frame, the end cross-section of the blocks is a right triangle, and the placement frame and connecting plate are both attached to the cover plate.

[0013] As a preferred technical solution of this application, the air storage cylinders are evenly distributed on the inner bottom surface of the housing. A third spring is welded and fixed on the inner bottom surface of the air storage cylinder. A rubber piston is fixedly connected to the top of the third spring. The rubber piston is slidably connected to the air storage cylinder. A push rod is fixedly connected to the top of the rubber piston. The push rod is slidably connected to the air storage cylinder. An air guide tube is connected to the bottom side of the air storage cylinder. The other end of the air guide tube is connected to the rubber airbag. The top of the push rod is in contact with the bottom of the sensor body. The fixed cylinder is fixed at the bottom center of the housing. The rubber airbag is cylindrical in shape.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0015] In the scheme of this application:

[0016] 1. Through the cooperation of the set slots and levers, the disassembly and installation between the housing and the cover plate can be completed easily, thereby enabling convenient and stable snap-fit ​​installation and disassembly of the sensor body, thus ensuring the convenience of subsequent inspection and maintenance of the sensor body;

[0017] 2. By setting two limiting blocks, the sensor body can be automatically and stably squeezed and limited after the cover plate is installed. This allows the housing to provide convenient and stable limiting protection for the sensor body. At the same time, with the combined action of each damping cylinder and corresponding shock-absorbing spring, the limiting blocks can provide automatic and stable all-round shock absorption protection for the sensor body, effectively improving the safety of the protective housing.

[0018] 3. The set-in placement frame allows for convenient storage of desiccant, thereby providing stable moisture protection for the sensor body inside the protective housing. Furthermore, the combination of the baffle and connecting plate allows for easy disassembly and installation of the placement frame, enabling convenient replacement of the desiccant and increasing the versatility of the protective housing.

[0019] 4. With the rubber piston and push rod, the rubber airbag can be automatically inflated during the sensor body installation process. Combined with the fixing cylinder, it can automatically seal the connection between the cable and the housing, further improving the sealing performance of the protective shell. After the sensor body is disassembled, the rubber airbag can automatically return to its original shape, ensuring the convenience and stability of subsequent repeated use. Attached Figure Description

[0020] Figure 1 A three-dimensional structural diagram of the protective housing for the magnetic field sensor provided in this application;

[0021] Figure 2 A three-dimensional structural diagram of the limiting block for the protective housing of the magnetic field sensor provided in this application;

[0022] Figure 3 A schematic diagram of the connection structure between the connecting plate and the placement frame of the magnetic field sensor protective housing provided in this application;

[0023] Figure 4 A schematic diagram of the overall main cross-sectional structure of the protective housing for the magnetic field sensor provided in this application;

[0024] Figure 5 The protective housing for the magnetic field sensor provided in this application Figure 4 Enlarged structural diagram at point A in the middle;

[0025] Figure 6 A schematic diagram of the main cross-sectional structure of the gas storage cylinder of the protective housing for the magnetic field sensor provided in this application;

[0026] Figure 7 A top-section schematic diagram of the cover plate structure of the protective housing for the magnetic field sensor provided in this application;

[0027] Figure 8 A top view schematic diagram of the rubber airbag structure of the protective housing for the magnetic field sensor provided in this application.

[0028] The diagram shows: 1. Housing; 2. Sealing ring; 3. Slot; 4. Cover plate; 5. Storage slot; 6. First spring; 7. Locking rod; 8. Damping cylinder; 9. Shock-absorbing spring; 10. Limiting block; 11. Limiting frame; 12. Second spring; 13. Stop block; 14. Connecting plate; 15. Placement frame; 16. Sensor body; 17. Plug socket; 18. Plug connector; 19. Cable; 20. Fixing cylinder; 21. Rubber airbag; 22. Air storage cylinder; 23. Third spring; 24. Rubber piston; 25. Push rod; 26. Air guide tube. Detailed Implementation

[0029] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model.

[0030] Therefore, the following detailed description of the embodiments of this utility model is not intended to limit the scope of the claimed utility model, but merely to illustrate some embodiments of the utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model.

[0031] It should be noted that, unless otherwise specified, the embodiments and features and technical solutions in the present invention can be combined with each other.

[0032] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0033] In the description of this utility model, it should be noted that the terms "upper," "lower," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product is in use, or the orientation or positional relationship commonly understood by those skilled in the art. These terms are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this utility model. In addition, the terms "first," "second," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0034] Example 1:

[0035] like Figure 1 , Figure 2 and Figures 4-8 As shown, this embodiment proposes a protective housing for a magnetic field sensor, including a housing 1, a cover plate 4, and a limiting block 10. A sealing ring 2 is fixedly connected to the top of the housing 1. A slot 3 is opened on the top side of the housing 1. A storage groove 5 is opened on the side of the cover plate 4. A first spring 6 is welded and fixed in the storage groove 5. A locking rod 7 is welded and fixed on the first spring 6. The locking rod 7 is slidably connected to the side of the cover plate 4. The end of the locking rod 7 is engaged in the slot 3. A damping cylinder 8 is welded and fixed on both the cover plate 4 and the housing 1. A shock-absorbing spring 9 is sleeved on the damping cylinder 8. Both the damping cylinder 8 and the shock-absorbing spring 9 are welded and fixed on the limiting block 10. A sensor body 16 is provided inside the housing 1. A plug-in seat 17 is provided at the bottom of the sensor body 16. A plug connector 18 is connected to the plug connector 17. A cable 19 is connected to the plug connector 18. A fixing cylinder 20 and an air storage cylinder 22 are welded and fixed to the bottom of the housing 1. A rubber airbag 21 is fixedly connected inside the fixing cylinder 20.

[0036] Example 2:

[0037] The solution in Example 1 will be further described below with reference to its specific working method.

[0038] like Figure 1 , Figure 4 and Figure 5 As shown, in a preferred embodiment, based on the above method, the sealing ring 2 is further fitted with the cover plate 4, the cover plate 4 is fitted with the housing 1, and the storage grooves 5 are symmetrically distributed on both sides of the cover plate 4. The storage grooves 5 correspond one-to-one with the slots 3 through the locking rods 7. By utilizing the cooperation of the slots 3 and the locking rods 7, the disassembly and installation between the housing 1 and the cover plate 4 can be easily completed, thereby enabling convenient and stable locking, installation and disassembly of the sensor body 16, thus ensuring the convenience of subsequent inspection and maintenance of the sensor body 16.

[0039] like Figure 2 and Figures 4-7 As shown, in a preferred embodiment, based on the above method, the damping cylinders 8 are further distributed at equal angles on the bottom surface of the inner end of the housing 1 and the bottom surface of the cover plate 4. The damping cylinders 8 correspond one-to-one with the shock-absorbing springs 9. The limiting block 10 is generally circular in shape, and the outer wall of the limiting block 10 fits against the inner wall of the housing 1. The cross-section of the limiting block 10 is a right-angled triangle. Under the joint action of the two limiting blocks 10, the sensor body 16 can be automatically and stably squeezed and limited after the cover plate 4 is snapped in and installed. Thus, the housing 1 can provide convenient and stable limiting protection for the sensor body 16. At the same time, under the joint action of each damping cylinder 8 and the corresponding shock-absorbing spring 9, the limiting block 10 can be combined to provide automatic and stable all-round shock absorption protection for the sensor body 16.

[0040] like Figures 3-5 As shown, in a preferred embodiment, based on the above method, a limiting frame 11 is welded and fixed on the cover plate 4, a second spring 12 is welded and fixed on the limiting frame 11, a stop block 13 is welded and fixed on the second spring 12, the stop block 13 is slidably connected through the limiting frame 11, a connecting plate 14 is slidably connected inside the limiting frame 11, a placement mesh frame 15 is welded and fixed on the connecting plate 14, and a desiccant is placed inside the placement mesh frame 15. The stop blocks 13 are symmetrically distributed on both sides of the limiting frame 11, and the end cross-section of the stop blocks 13 is a right-angled triangle. The placement mesh frame 15 and the connecting plate 14 are both in contact with the cover plate 4. The placement mesh frame 15 can be used to conveniently store the desiccant, thereby enabling stable dehumidification protection of the sensor body 16 inside the protective shell. Furthermore, the cooperation of the stop block 13 and the connecting plate 14 allows for convenient disassembly and installation of the placement mesh frame 15, thus enabling convenient replacement of the desiccant.

[0041] like Figure 4 , Figure 6 and Figure 8As shown, in a preferred embodiment, based on the above method, the air storage cylinders 22 are further distributed at equal angles on the inner bottom surface of the housing 1. A third spring 23 is welded and fixed on the inner bottom surface of the air storage cylinder 22. A rubber piston 24 is fixedly connected to the top of the third spring 23. The rubber piston 24 is slidably connected inside the air storage cylinder 22. A push rod 25 is fixedly connected to the top of the rubber piston 24. The push rod 25 is slidably connected inside the air storage cylinder 22. An air guide tube 26 is connected to the bottom side of the air storage cylinder 22. The other end of the air guide tube 26 is connected to the rubber air bladder 21. The top of the push rod 25 is in contact with the bottom of the sensor body 16. The fixing cylinder 20 is fixed at the bottom center of the housing 1. The rubber air bladder 21 is cylindrical in shape. With the cooperation of the rubber piston 24 and the push rod 25, the rubber air bladder 21 can be automatically inflated during the installation of the sensor body 16. Combined with the fixing cylinder 20, the connection between the cable 19 and the housing 1 can be automatically sealed, further improving the sealing performance of the protective housing.

[0042] Specifically, when using this magnetic field sensor protective housing: First, the operator can pass the top of the cable 19 through the middle of the rubber airbag 21, and then connect the connector 18 at the top of the cable 19 to the connector 17 at the bottom of the sensor body 16. Then, the sensor body 16 can be placed into the housing 1. After the sensor body 16 is placed stably, the operator can first pull the latches 7 on both sides of the cover plate 4 outward, and at the same time, the cover plate 4 is locked onto the top of the housing 1. At this time, the operator can release the latches 7. Under the elastic action of the first spring 6, the latches 7 can be automatically locked into the slots 3 on the housing 1. Combined with the sealing ring 2, the sensor body 16 can be conveniently and stably sealed and protected.

[0043] Furthermore, during the installation of the sensor body 16, the cover plate 4 can push the sensor body 16 downward through the limiting block 10 on the damping cylinder 8, so that it moves completely into the housing 1. Under the action of the sensor body 16, the rubber piston 24 on the third spring 23 can be pushed downward synchronously through the push rod 25. Combined with the air storage cylinder 22 and the air guide pipe 26, the rubber air bag 21 in the fixed cylinder 20 can be automatically inflated, thereby automatically sealing the connection between the cable 19 and the housing 1, further improving the sealing performance of the protective housing.

[0044] After installation, the sensor body 16 can be automatically and stably squeezed and limited by the upper and lower limit blocks 10. This allows the housing 1 to provide convenient and stable limiting protection for the sensor body 16. At the same time, the damping cylinders 8 and the corresponding shock-absorbing springs 9 work together to provide automatic and stable shock absorption protection for the sensor body 16, effectively improving the safety of the protective housing. Furthermore, during the operation of the sensor body 16, the desiccant inside the mesh frame 15 provides stable dehumidification protection for the sensor body 16 inside the protective housing.

[0045] When the sensor body 16 needs to be inspected and maintained, or the desiccant inside the mesh frame 15 needs to be replaced, simply pull the latches 7 on both sides of the cover plate 4 outward again until they move out of the slots 3 on the housing 1. This allows for easy disassembly and separation of the cover plate 4 from the housing 1, facilitating the disassembly and maintenance of the sensor body 16. Similarly, by pulling the stop block 13 on the side of the limiting frame 11, the connecting plate 14, no longer obstructed by the stop block 13, can move the mesh frame 15 synchronously out of the limiting frame 11, completing the disassembly of the mesh frame 15 and allowing for the replacement of the desiccant inside. Likewise, simply push the connecting plate 14 and the stop block on the mesh frame 15. When the inclined surface of 13 contacts and pushes the placement frame 15 upward, the connecting plate 14 can push the two side blocks 13 to move automatically to the side until the connecting plate 14 moves above the block 13. At this time, under the elastic action of the second spring 12, the block 13 can be driven to move and reset automatically, thereby blocking the connecting plate 14 to complete the locking and installation of the placement frame 15, ensuring the stability of the subsequent working state of the placement frame 15 and the internal desiccant. Moreover, after the sensor body 16 is disassembled, under the elastic action of the third spring 23, the rubber piston 24 and push rod 25 can be driven to move upward and reset. At this time, the rubber airbag 21 can automatically return to its original state, ensuring the convenience and stability of subsequent repeated use.

[0046] The above embodiments are only used to illustrate the present utility model and are not intended to limit the technical solutions described in the present utility model. Although the present utility model has been described in detail with reference to the above embodiments, the present utility model is not limited to the specific embodiments described above. Therefore, any modifications or equivalent substitutions to the present utility model, as well as all technical solutions and improvements that do not depart from the spirit and scope of practicality, are covered within the scope of the claims of the present utility model.

Claims

1. A protective housing for a magnetic field sensor, comprising a housing (1), a cover plate (4), and a limiting block (10), characterized in that, A sealing ring (2) is fixedly connected to the top of the housing (1). A slot (3) is provided on the top side of the housing (1). A storage slot (5) is provided on the side of the cover plate (4). A first spring (6) is welded and fixed in the storage slot (5). A locking rod (7) is welded and fixed on the first spring (6). The locking rod (7) is slidably connected to the side of the cover plate (4). The end of the locking rod (7) is engaged in the slot (3). A damping cylinder (8) is welded and fixed on both the cover plate (4) and the housing (1). A shock-absorbing spring (9) is fitted on the upper part. Both the damping cylinder (8) and the shock-absorbing spring (9) are welded and fixed on the limiting block (10). A sensor body (16) is provided inside the housing (1). A plug-in seat (17) is provided at the bottom of the sensor body (16). A plug connector (18) is connected to the plug connector (17). A cable (19) is connected to the plug connector (18). A fixing cylinder (20) and an air storage cylinder (22) are welded and fixed at the bottom of the housing (1). A rubber air bladder (21) is fixedly connected inside the fixing cylinder (20).

2. The protective housing for a magnetic field sensor according to claim 1, characterized in that, The sealing ring (2) is fitted to the cover plate (4), the cover plate (4) is fitted to the shell (1), the storage groove (5) is symmetrically distributed on both sides of the cover plate (4), and the storage groove (5) corresponds one-to-one with the slot (3) through the locking rod (7).

3. The protective housing for a magnetic field sensor according to claim 1, characterized in that, The damping cylinders (8) are distributed at equal angles on the bottom surface of the inner side of the housing (1) and the bottom surface of the cover plate (4). The damping cylinders (8) correspond one-to-one with the shock-absorbing springs (9). The limiting block (10) is in the shape of a ring. The outer wall of the limiting block (10) is in contact with the inner wall of the housing (1). The cross-section of the limiting block (10) is a right triangle.

4. The protective housing for a magnetic field sensor according to claim 1, characterized in that, A limiting frame (11) is welded and fixed on the cover plate (4). A second spring (12) is welded and fixed on the limiting frame (11). A stop block (13) is welded and fixed on the second spring (12). The stop block (13) is slidably connected through the limiting frame (11). A connecting plate (14) is slidably connected inside the limiting frame (11). A mesh frame (15) is welded and fixed on the connecting plate (14).

5. A protective housing for a magnetic field sensor according to claim 4, characterized in that, The stop blocks (13) are symmetrically distributed on both sides of the limiting frame (11). The end cross-section of the stop blocks (13) is a right triangle. The placement frame (15) and the connecting plate (14) are both attached to the cover plate (4).

6. The protective housing for a magnetic field sensor according to claim 1, characterized in that, The gas storage cylinders (22) are evenly distributed on the inner bottom surface of the housing (1). A third spring (23) is welded and fixed on the inner bottom surface of the gas storage cylinder (22). A rubber piston (24) is fixedly connected to the top of the third spring (23). The rubber piston (24) is slidably connected to the gas storage cylinder (22). A push rod (25) is fixedly connected to the top of the rubber piston (24). The push rod (25) is slidably connected to the gas storage cylinder (22). A gas guide tube (26) is connected to the bottom side of the gas storage cylinder (22). The other end of the gas guide tube (26) is connected to the rubber air bag (21). The top of the push rod (25) is in contact with the bottom of the sensor body (16). The fixed cylinder (20) is fixed at the bottom center of the housing (1). The rubber air bag (21) is cylindrical in shape.

Images