Filter with protection device

Abstract

In order to solve the problems that in the prior art, a wiring end is exposed outside, damage is easily caused, and the using effect is affected, the filter with the protection device comprises a shell and a binding post, the shell is provided with a positioning column located above the binding post, and the positioning column is detachably connected with a protection assembly. The protection assembly comprises a pin shaft, a first half cover and a second half cover, one end of the pin shaft is connected with the positioning column, one end of the first half cover and one end of the second half cover are rotationally connected to the pin shaft, and the first half cover and the second half cover can rotate around the pin shaft to wrap the binding post inside or expose the binding post outside. According to the utility model, the binding post can be wrapped in the protective structure for protection, the protective structure is convenient to open during use, wiring operation is facilitated, the filter is convenient to use, and the service life of the filter is prolonged.

Description

Technical Field

[0001] The utility model belongs to the technical field of filters, in particular to a filter with a protective device. Background Art

[0002] The filter is a filter circuit composed of capacitors, inductors and resistors. The filter can effectively filter out the frequency point of a specific frequency in the power line or the frequency outside the frequency point to obtain a power signal of a specific frequency, or eliminate a power signal after a specific frequency. Terminals for wiring are set at both ends of the filter. Generally, the terminal of the filter is directly exposed to the outside world. During use, dust or water vapor may fall on the terminal. In actual use, it is often found that after the filter sent by the manufacturer reaches the user, there are rusted terminals, which affects the use or causes damage to the filter. In addition, when in use, this exposed part is also prone to loosening due to external factors, which in turn affects the use effect. Therefore, it is necessary to design a protective device to protect the terminal. Utility Model Content

[0003] In order to solve the problem in the prior art that the exposed wiring terminals are easily damaged and affect the use effect, the utility model provides a filter with a protective device, which can wrap the wiring terminals inside for protection, and when in use, the protective structure is easy to open, which is convenient for wiring operations, easy to use, and increases the service life of the filter.

[0004] The utility model provides a filter with a protective device, comprising a shell and a terminal. The shell is provided with a positioning column located above the terminal, and a protective component is detachably connected to the positioning column. The protective component comprises a pin shaft, a first half cover and a second half cover, one end of the pin shaft is connected to the positioning column, one end of the first half cover and the second half cover are respectively rotatably connected to the pin shaft, and the first half cover and the second half cover can rotate around the pin shaft to wrap the terminal inside or expose it outside.

[0005] In the present technical solution, the protective component can be removed or installed as needed. For example, when the environment in which the filter is used is relatively harsh, the protective component can be used at this time. When the use environment is an internal sealed structure, the protective component can also be removed at this time. It is more flexible to use. The first half cover and the second half cover of the protective component can rotate around the pin shaft, so that the first half cover and the second half cover can rotate around the pin shaft to wrap the terminal inside. At this time, the terminal is protected to prevent water or dust from falling on the terminal, and it can also avoid impact damage to the terminal during transportation. The first half cover and the second half cover can also rotate around the pin shaft to expose the terminal to the outside. At this time, wiring operations can be performed to avoid the inconvenience of wiring caused by the interference of the protective component.

[0006] Preferably, a connecting seat is provided at one end of the pin shaft, and a connecting hole connected to the positioning column is provided on the connecting seat. After the connecting seat and the positioning column are connected, the two cannot rotate relative to each other. Through this arrangement, the connecting seat and the pin shaft and the positioning column are plug-connected, which is convenient for assembly and disassembly. After the connecting seat and the positioning column are connected, the two cannot rotate relative to each other to ensure the stability of the protective effect of the protective component.

[0007] Preferably, the cross-sectional shape of the first half cover and the second half cover is a semicircular structure. Since the terminal is generally a cylindrical terminal structure, the structure of the first half cover and the second half cover forms a cylindrical structure that wraps the terminal in the protective state, which helps to ensure the consistency of the gap around the terminal in the protective state.

[0008] Preferably, a torsion spring is provided at the connection position between the first half cover and the second half cover and the pin shaft, and the first half cover and the second half cover wrap the terminal under the action of the torsion spring. Through this arrangement, the first half cover and the second half cover have a protective effect on the terminal in a natural state, achieving a foolproof effect and avoiding the problem of forgetting to perform protection.

[0009] Preferably, the minimum distance between the outer side wall of the terminal and the first half cover and the second half cover is not less than 5 cm, and the distance between the terminal and the positioning post is 5-10 cm. In the wrapped protection state, a certain gap is set between the terminal and the first half cover and the second half cover to facilitate accommodating the cable connected to the terminal, and at the same time avoid the problem of low heat dissipation efficiency of the wiring part caused by too close distance.

[0010] Preferably, the cross-section of the positioning column and the connecting hole is a square structure. Through the setting of the square structure, the positioning column and the connecting seat are connected to achieve circumferential positioning. The square structure has four positioning surfaces, and the installation is more stable.

[0011] Preferably, a key slot is provided on the outer side wall of the positioning column, and a protrusion matching the key slot is provided on the inner side wall of the connecting hole, so as to improve the stability of the assembly.

[0012] Preferably, when the first half cover and the second half cover can rotate around the pin shaft to wrap the terminal inside, a sealing structure is formed between the first half cover and the second half cover, the pin shaft and the connecting seat, so as to achieve a better sealing protection effect.

[0013] Preferably, when leaving the factory, the first half cover and the second half cover wrap the terminal, and one end of the first half cover and the second half cover is provided with oil paper to seal the ends of the first half cover and the second half cover. This can prevent moisture or dust from damaging the terminal during transportation. When the user receives the product, he can directly pierce the oil paper to perform wiring operations, which is convenient to use.

[0014] In summary, the technical solution of the utility model has at least the following beneficial effects:

[0015] 1. It can wrap the terminal for protection to prevent damage to the terminal by water vapor or dust;

[0016] 2. The rotating structure of the protective structure makes it easy to open, convenient for wiring operation, and easy to use;

[0017] 3. Through the design of the torsion spring, the first half cover and the second half cover are automatically in a protective state for a long time, and the protective effect is better. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0019] Figure 1 It is a schematic diagram of the overall structure of one embodiment of the utility model from a side view;

[0020] Figure 2 This is a schematic diagram of the side view structure of the first half cover of one embodiment of the utility model;

[0021] Figure 3 This is a schematic diagram of the side structure of the second half cover of one embodiment of the utility model;

[0022] Figure 4 This is a schematic cross-sectional view of a connecting seat and a pin shaft in one embodiment of the utility model;

[0023] Figure 5 This is a schematic diagram of a top view of the assembly structure of a protective component of one embodiment of the utility model;

[0024] Figure 6 This is a schematic diagram of the main structure of the protective component of one embodiment of the utility model in the protective state (wrapping the terminal);

[0025] Figure 7 This is a schematic diagram of the main structure of the protective component state when the terminal is exposed in one embodiment of the utility model.

[0026] In the figure:

[0027] 1. Shell; 2. Terminal block; 3. Pin shaft; 4. First half cover; 5. Second half cover; 6. Connecting seat; 7. Connecting hole; 8. Positioning column. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0029] See attached Figure 1-7 One embodiment of the utility model provides a filter with a protective device, including a shell 1 and a terminal 2. The shell 1 is provided with a positioning column 8 located above the terminal 2, and a protective component is detachably connected to the positioning column 8. The protective component includes a pin 3, a first half cover 4, and a second half cover 5. One end of the pin 3 is connected to the positioning column 8, and one end of the first half cover 4 and the second half cover 5 are respectively rotatably connected to the pin 3. The first half cover 4 and the second half cover 5 can rotate around the pin 3 to wrap the terminal 2 inside or expose it outside.

[0030] In this embodiment, the protective component can be removed or installed as needed. For example, when the environment in which the filter is used is relatively harsh, the protective component can be used at this time. When the use environment is an internal sealed structure, the protective component can also be removed at this time. It is more flexible to use. The first half cover 4 and the second half cover 5 of the protective component can rotate around the pin shaft 3, so that the first half cover 4 and the second half cover 5 can rotate around the pin shaft 3 to wrap the terminal 2 inside. At this time, the terminal 2 is protected to prevent water or dust from falling on the terminal 2, and it can also avoid impact damage to the terminal 2 during transportation. The first half cover 4 and the second half cover 5 can also rotate around the pin shaft 3 to expose the terminal 2 to the outside. At this time, wiring operations can be performed to avoid the inconvenience of wiring caused by the interference of the protective component.

[0031] It should be noted that when the filter leaves the factory, the first half cover 4 and the second half cover 5 in the protective assembly wrap the terminal 2. At this time, oil paper is provided at one end of the first half cover 4 and the second half cover 5 to seal the ends of the first half cover 4 and the second half cover 5. The oil paper is a disposable structure, which can prevent the terminal 2 from being damaged by water vapor or dust during transportation. When the user receives the product, he can directly pierce the oil paper to perform wiring operations, which is convenient to use.

[0032] In one embodiment of the utility model, a connecting seat 6 is provided at one end of the pin shaft 3, and a connecting hole 7 connected to the positioning column 8 is provided on the connecting seat 6. After the connecting seat 6 and the positioning column 8 are connected, the two cannot rotate relative to each other. In this embodiment, the connecting seat 6 and the pin shaft 3 and the positioning column 8 are plug-connected, which is convenient for assembly and disassembly. After the connecting seat 6 and the positioning column 8 are connected, the two cannot rotate relative to each other to ensure the stability of the protective effect of the protective assembly.

[0033] In order to realize the plug-in connection between the connecting seat 6 and the pin shaft 3 and the positioning column 8, the utility model provides the following two specific embodiments. First, the cross-section of the positioning column 8 and the connecting hole 7 is a square structure. Through the setting of the square structure, the positioning in the circumferential direction is realized after the positioning column 8 and the connecting seat 6 are connected. The square structure has four positioning surfaces, and the installation is more stable. It should be noted that in actual use, the cross-section of the positioning column 8 and the connecting hole 7 can also be set to a matching V-shape, triangle, hexagon, pentagon, dovetail shape, etc. Second, a keyway is provided on the outer wall of the positioning column 8, and a protrusion that cooperates with the keyway is provided on the inner wall of the connecting hole 7. Improve the stability of the assembly. In actual use, the positioning column 8 can be set to a spline structure, which makes the assembly effect more stable.

[0034] The cross-sectional shape of the first half cover 4 and the second half cover 5 of one embodiment of the utility model is a semicircular structure. Since the terminal 2 is generally a cylindrical terminal structure, the structure of the first half cover 4 and the second half cover 5 forms a cylindrical structure that wraps the terminal 2 in the protective state, which helps to ensure the consistency of the gap around the terminal 2 in the protective state. In this embodiment, the minimum distance between the outer wall of the terminal 2 and the first half cover 4 and the second half cover 5 is not less than 5cm, and the distance between the terminal 2 and the positioning column 8 is 5-10cm. In this way, in the wrapped protective state, a certain gap is set between the terminal 2 and the first half cover 4 and the second half cover 5, which is convenient for accommodating the cables connected to the terminal 2, and at the same time can avoid the problem of low heat dissipation efficiency of the wiring part caused by too close distance.

[0035] In order to achieve a better protection effect, the utility model is provided with a torsion spring (not shown in the figure) at the connection position between the first half cover 4 and the second half cover 5 and the pin shaft 3, and the first half cover 4 and the second half cover 5 wrap the terminal 2 under the action of the torsion spring. In this way, the first half cover 4 and the second half cover 5 have a protective effect on the terminal 2 in a natural state, achieving a foolproof effect and avoiding the problem of forgetting to perform protection.

[0036] When the first half cover 4 and the second half cover 5 are able to rotate around the pin shaft 3 to wrap the terminal 2 inside, a sealing structure is formed between the first half cover 4 and the second half cover 5 and the pin shaft 3 as well as the connecting seat 6. The formation of the sealing structure can be achieved by making the first half cover 4 and the second half cover 5 fit tightly with the connecting seat 6 under the action of the torsion spring, thereby achieving a better sealing and protective effect.

[0037] This embodiment does not impose any formal restrictions on the shape, material, structure, etc. of the utility model. Any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the utility model are within the protection scope of the technical solution of the utility model.

Claims

1. A filter with a protective device, characterized in that The invention comprises a shell (1) and a terminal (2), wherein the shell (1) is provided with a positioning column (8) located above the terminal (2), and the positioning column (8) is detachably connected with a protective component, and the protective component comprises a pin shaft (3), a first half cover (4), and a second half cover (5), one end of the pin shaft (3) is connected to the positioning column (8), one end of the first half cover (4) and the second half cover (5) are respectively rotatably connected to the pin shaft (3), and the first half cover (4) and the second half cover (5) can rotate around the pin shaft (3) to wrap the terminal (2) inside or expose it outside.

2. The filter with a protective device according to claim 1, characterized in that: A connecting seat (6) is provided at one end of the pin shaft (3), and a connecting hole (7) connected to the positioning column (8) is provided on the connecting seat (6). After the connecting seat (6) and the positioning column (8) are connected, the two cannot rotate relative to each other.

3. The filter with a protective device according to claim 1, characterized in that: The cross-sectional shapes of the first half cover (4) and the second half cover (5) are semicircular structures.

4. The filter with a protective device according to claim 1, characterized in that: A torsion spring is provided at the connection position between the first half cover (4) and the second half cover (5) and the pin shaft (3); the first half cover (4) and the second half cover (5) wrap the terminal (2) under the action of the torsion spring.

5. The filter with a protective device according to claim 1, characterized in that: The minimum distance between the outer side wall of the terminal (2) and the first half cover (4) and the second half cover (5) is not less than 5 cm, and the distance between the terminal (2) and the positioning column (8) is 5-10 cm.

6. The filter with a protective device according to claim 2, characterized in that: The cross-sections of the positioning column (8) and the connecting hole (7) are square structures.

7. The filter with a protective device according to claim 2, characterized in that: A key slot is provided on the outer side wall of the positioning column (8), and a protrusion matching the key slot is provided on the inner side wall of the connecting hole (7).

8. The filter with a protective device according to claim 2, characterized in that: When the first half cover (4) and the second half cover (5) are able to rotate around the pin shaft (3) to wrap the terminal (2) therein, a sealing structure is formed between the first half cover (4) and the second half cover (5), the pin shaft (3) and the connecting seat (6).

9. The filter with a protective device according to claim 1, characterized in that: When leaving the factory, the first half cover (4) and the second half cover (5) wrap the terminal (2) and one end of the first half cover (4) and the second half cover (5) is provided with oil paper for sealing the end of the first half cover (4) and the second half cover (5).

Images