Secondary terminal protective cover for switch

Abstract

A secondary terminal protective cover for a switch belongs to the technical field of low-voltage electric appliances. Comprising a secondary terminal protective cover body, the secondary terminal protective cover body is installed on a secondary terminal on the front side of the top of the switch, the secondary terminal is connected with a wire, and the wire penetrates through the protective cover to extend outwards and is used for external wiring of the secondary terminal; the secondary terminal protective cover is characterized in that the secondary terminal protective cover body wraps the secondary terminal, an elastic groove is arranged on the secondary terminal protective cover body, the wire can penetrate through the elastic groove, the secondary terminal protective cover body comprises a top surface, a front side surface and a pair of side surfaces, the elastic groove is arranged on the top surface, the front side surface is arranged on the top surface, and the pair of side surfaces is arranged on the front side surface. And the secondary terminal protective cover body is in hasp fit with the secondary terminal. The switch has the advantages of simple structure, good sealing effect, convenience in positioning and mounting, low cost and capability of effectively improving the reliability of the switch under severe environment working conditions.

Description

Technical Field

[0001] The utility model belongs to the technical field of low-voltage electrical appliances, and particularly relates to a secondary terminal protective cover for a switch. Background Art

[0002] A switch is a very important electrical appliance in a power supply and distribution line. It can cut off the current carried to achieve the disconnection of the circuit, playing a role in protecting the line and electrical equipment. Generally, secondary terminals are provided on the front side of the top of the switch. The secondary terminals are used for the secondary electrical connection between the switch and the outside, and the signal electrical connection between the outside and the switch is realized through the secondary. In this way, it not only ensures that the remote control signal can control the switch through the secondary terminals, but also the switch can transmit its own signal to the outside.

[0003] When the switch is applied in harsh environmental conditions, such as severely sandy Gobi desert areas, smelters, chemical fiber enterprises, mines, etc., the secondary terminals are easily contaminated by dust, fibers, and conductive dust, resulting in poor contact of the secondary terminals or even short circuits between the terminals. To improve the reliability of the switch in harsh environmental conditions, the protection of the secondary terminals is particularly important. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a secondary terminal protective cover for a switch, which has a simple structure, good sealing effect, convenient positioning and installation, low cost, and can effectively improve the reliability of the switch in harsh environmental conditions.

[0005] The purpose of the utility model is achieved in this way. A secondary terminal protective cover for a switch includes a secondary terminal protective cover body. The secondary terminal protective cover body is installed on the secondary terminals on the front side of the top of the switch. The secondary terminals are connected to wires, and the wires pass through the secondary terminal protective cover body and extend to the outside for external wiring of the secondary terminals. The secondary terminal protective cover body covers the secondary terminals. An elastic groove is provided on the secondary terminal protective cover body for the wires to pass through. The secondary terminal protective cover body includes a top surface, a front surface, and a pair of side surfaces. The elastic groove is located on the top surface, and the secondary terminal protective cover body and the secondary terminals are in a snap-fit.

[0006] In a specific embodiment of the utility model, the secondary terminal protective cover body is made of rubber.

[0007] In another specific embodiment of the utility model, the elastic groove is a preset groove.

[0008] In yet another specific embodiment of the present utility model, the secondary terminal includes an upper terminal portion and a lower terminal portion. The upper terminal portion is located at the upper part of the front side of the secondary terminal, and the lower terminal portion is located at the lower part of the front side of the secondary terminal. The upper terminal portion is used for wiring the secondary terminal to the outside of the switch, and the lower terminal portion is used for wiring the secondary terminal to the inside of the switch. The upper terminal portion includes an upper insertion terminal and a lower insertion terminal. The upper insertion terminal is arranged in a row, and the lower insertion terminal is also arranged in a row, and the two are arranged one above the other.

[0009] In still another specific embodiment of the present utility model, positioning protrusions are provided on the inner side of the top surface. There are multiple groups of the positioning protrusions, and each group includes two positioning protrusions. The upper terminal portion includes a partition plate and an insertion terminal. There are multiple partition plates which are respectively located between adjacent insertion terminals, and one group of the positioning protrusions clamps the corresponding partition plate.

[0010] In still another specific embodiment of the present utility model, a mating portion is provided on the side surface. The mating portion is used for mating with the shape of the secondary terminal. A stuffing block is further provided on the inner side of the side surface. Gap cavities are also provided on both sides of the upper terminal portion, and the gap cavities are filled and mated with the stuffing block.

[0011] In yet another further specific embodiment of the present utility model, a positioning post is further provided on the inner side of the top surface. A positioning hole facing upward is also provided on the upper terminal portion, and the positioning hole is inserted and mated with the positioning post.

[0012] In yet another even further specific embodiment of the present utility model, a convex edge is further provided on the inner side of the top surface. A back side is also provided on the upper terminal portion. After the secondary terminal protection cover body is installed, the convex edge is snap-fitted with the back side.

[0013] In yet another further and further specific embodiment of the present utility model, a flanging is provided on the lower side of the front side surface, and the flanging is snap-fitted on the lower edge of the upper terminal portion.

[0014] In yet another even further and further specific embodiment of the present utility model, a first rib is provided on the inner side of the front side surface, and a second rib is provided on the inner side of the flanging. Both the first rib and the second rib extend along the width direction of the secondary terminal protection cover body. The first rib contacts the upper edge of the lower insertion terminal, and the second rib on the flanging is embedded into the embedding groove on the lower edge of the upper terminal portion.

[0015] Due to the adoption of the above structure, the utility model has the following beneficial effects: The secondary terminal protective cover is sleeved on the secondary terminal, and an elastic groove for the wire to pass through is provided on the secondary terminal. The elastic groove wraps the wire through its own elasticity to ensure the sealing of the gap around the wire. This protective cover does not require the installation method using fasteners such as screws, nor does it need to rely on other components of the switch. It has the advantages of simple structure, good sealing effect, convenient positioning and installation, low cost, and can effectively improve the reliability of the switch under harsh environmental conditions. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a schematic structural diagram of the switch according to the utility model;

[0017] Figure 2 is a schematic structural diagram of one side of the secondary terminal protective cover body according to the utility model;

[0018] Figure 3 is a schematic structural diagram of the other side of the secondary terminal protective cover body according to the utility model;

[0019] Figure 4 is a schematic structural diagram of yet another side of the secondary terminal protective cover body according to the utility model;

[0020] Figure 5 is a schematic structural diagram of one side of the secondary terminal according to the utility model;

[0021] Figure 6 is a schematic structural diagram of the other side of the secondary terminal according to the utility model.

[0022] In the figure: 1. Secondary terminal, 11. Upper terminal part, 100. Upper plug-in terminal, 200. Lower plug-in terminal, 201. Front end face, 111. Partition, 112. Plug-in terminal, 113. Gap cavity, 114. Positioning hole, 115. Back side, 116. Lower edge embedding groove, 12. Lower terminal part; 2. Secondary terminal protective cover body, 21. Top surface, 211. Positioning protrusion, 212. Flange, 213. Positioning column, 22. Front side, 221. Flanging, 222. First rib, 223. Second rib, 23. Side, 231. Matching part, 232. Filling block, 24. Elastic groove, 241. Round hole part, 242. Groove part; 3. Wire. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0023] The following will describe in detail the specific embodiments of the present utility model in conjunction with the accompanying drawings. However, the description of the embodiments is not a limitation on the technical solution. Any change in form rather than in essence based on the concept of the present utility model should be regarded as within the protection scope of the present utility model.

[0024] In the following description, all concepts related to the directionality or orientation of up, down, left, right, front, and back are based on the positions shown in the corresponding attached drawings. It is only for the convenience of describing the technical solution provided by the present utility model in combination with the attached drawings and simplifying the description, and thus it cannot be understood as a special limitation on the technical solution provided by the present utility model.

[0025] As Figure 1 , it is a schematic diagram of a switch. The switch includes a secondary terminal 1 located at the front side of the top. A secondary terminal protection cover body 2 is covered on the secondary terminal 1. The secondary terminal 1 is connected to a wire 3, and the wire 3 passes through the secondary terminal protection cover body 2 and extends outward for external wiring of the secondary terminal 1.

[0026] As Figure 2 , Figure 3 , Figure 4 , the secondary terminal protection cover body 2 includes a top surface 21, a front side surface 22, and a pair of side surfaces 23, thus forming a three-sided covering shape. An elastic groove 24 is provided on the top surface 21, and the elastic groove 24 is used for the wire 3 to pass through. Since the elastic groove 24 has elasticity, when the elastic groove 24 allows the wire 3 to pass through, it can wrap the wire 3 through its own elastic energy and seal the gap around the wire 3, isolating the inside and outside of the secondary terminal protection cover body 2, thereby preventing the erosion of the secondary terminal 1 by dust, fibers, and conductive dust.

[0027] The secondary terminal protection cover body 2 is installed on the secondary terminal 1, which requires no other components, and its installation and positioning are all coordinated with the secondary terminal 1, and there are no requirements for positioning, installation, and coordination with other components of the switch.

[0028] The secondary terminal protection cover body 2 is made of rubber, specifically formed integrally by rubber. The entire secondary terminal protection cover body 2 has elasticity and can better wrap the secondary terminal 1, achieving a better effect of preventing dust, fibers, and conductive dust.

[0029] Specifically, there are positioning protrusions 211, convex edges 212, and positioning columns 213 on the inner side of the top surface 21. The positioning protrusions 211 are in multiple groups, and each group includes two positioning protrusions 211. The convex edge 212 is located at the edge of the top surface 21 facing the inside of the switch and extends downward. The positioning column 213 is located inside the convex edge 212. Preferably, the positioning column 213 is cylindrical.

[0030] The lower side of the front side 22 has a flanging 221, the inner side of the front side 22 has a first rib 222, and the inner side of the flanging 221 has a second rib 223. Both the first rib 222 and the second rib 223 extend along the width direction of the secondary terminal protective cover body 2, that is, along the width direction of the switch.

[0031] The side surfaces 23 are located on both sides of the secondary terminal protective cover body 2. The side surfaces 23 have a mating portion 231, and the mating portion 231 is used for shape matching with the corresponding portion of the secondary terminal 1 to achieve a fitting sealing effect. There is also a stuffing block 232 inside the side surface 23, and the stuffing block 232 is stuffed on both sides of the secondary terminal 1 to achieve a sealing effect.

[0032] The elastic groove 24 is an open groove with one side open. Specifically, the notch of the elastic groove 24 is located on the side facing the inside of the switch. More preferably, the elastic groove 24 is a preset groove, that is, when the secondary terminal protective cover body 2 is not in use, the elastic groove 24 is a semi-groove. At this time, the elastic groove 24 is not penetrated. When in use, tools such as scissors are used to cut along the semi-groove of the elastic groove 24 to obtain a through groove, so as to be used for the passage of the wire 3. Since it is cut by scissors, substantially, the two sides of the elastic groove 24 can ensure the sealing of the gap through its own elastic energy. With this setting, the number of through grooves in the elastic groove 24 can be generated according to the actual situation, that is, it matches the number and distribution of the wires 3 on site. Thus, the elastic groove 24 corresponding to the terminal of the secondary terminal 1 that does not connect the wire 3 is a semi-groove, and the elastic groove 24 corresponding to the terminal that connects the wire 3 is a through groove. The optimal sealing effect can be obtained according to different situations.

[0033] As Figure 5 、 Figure 6 is a schematic structural diagram of the secondary terminal 1. The secondary terminal 1 is installed on the front side at the top of the switch. The secondary terminal 1 includes an upper terminal portion 11 and a lower terminal portion 12. The upper terminal portion 11 is located at the upper part of the front side of the secondary terminal 1, and the lower terminal portion 12 is located at the lower part of the front side of the secondary terminal 1. Among them, the upper terminal portion 11 is used for the connection of the secondary terminal 1 to the outside of the switch, and the lower terminal portion 12 is used for the connection of the secondary terminal to the inside of the switch.

[0034] Specifically, the upper terminal portion 11 includes an upper plug-in terminal 100 and a lower plug-in terminal 200. Among them, the upper plug-in terminal 100 is in a row, and the lower plug-in terminal 200 is also in a row, and the two are arranged up and down.

[0035] The upper terminal portion 11 includes partition plates 111 and insertion terminals 112. There are multiple partition plates 111, which are respectively located between adjacent insertion terminals 112 to isolate adjacent insertion terminals 112. Specifically, the partition plates 111 are located on both sides of each insertion terminal 112 in the upper insertion terminal 100. Similarly, the partition plates 111 are located on both sides of each insertion terminal 112 in the lower insertion terminal 200, achieving an isolation effect. The partition plates 111 cooperate with the above-mentioned positioning protrusions 211. Specifically, a group of the positioning protrusions 211 clamp the corresponding partition plate 111 to ensure the positioning effect of the two.

[0036] Combined with Figure 4 , the elastic groove 24 is a bent groove, including a round hole portion 241 and a groove portion 242. The round hole portion 241 communicates with the groove portion 242, and the round hole portion 241 corresponds to the insertion terminal 112 below.

[0037] The upper terminal portion 11 also has gap cavities 113 on both sides. The gap cavities 113 are filled and cooperated with the packing blocks 232, that is, the filling blocks 232 are filled into the gap cavities 113 to achieve a sealing effect.

[0038] The upper terminal portion 11 also has upward positioning holes 114. The positioning holes 114 are inserted and cooperated with the positioning posts 213 to achieve a positioning effect.

[0039] The upper terminal portion 11 also has a back side 115. After the secondary terminal protection cover body 2 is installed, the convex edge 212 is buckled and cooperated with the back side 115, realizing partial installation and positioning of the secondary terminal protection cover body 2.

[0040] The flanging 221 is buckled on the lower edge of the upper terminal portion 11. More preferably, the second rib 223 on the flanging 221 is embedded into the embedding groove 116 on the lower edge of the upper terminal portion 11, ensuring the buckling effect between the flanging 221 and the lower edge of the upper terminal portion 11, and improving the sealing performance and positioning effect. At this time, the inner side of the front side 22 is attached to the front end face 201 of the lower insertion terminal 200; and the first rib 222 is in contact with the upper edge of the lower insertion terminal 200.

[0041] In this structure, the secondary terminal protection cover body 2 is only one part, and it is installed by a screw-free installation method such as buckling. The installation is simple and the cost is low. The positioning and installation of the secondary terminal protection cover body 2 are all completed only with the secondary terminal 1, without the need to rely on other components of the switch.

Claims

1. A secondary terminal protective cover for a switch, comprising a secondary terminal protective cover body (2), the secondary terminal protective cover body (2) is installed on a secondary terminal (1) at the front side of the top of the switch, the secondary terminal (1) is connected to a wire (3), and the wire (3) passes through the secondary terminal protective cover body (2) and extends to the outside for external wiring of the secondary terminal (1); characterized in that: The secondary terminal protection cover body (2) wraps the secondary terminal (1). An elastic groove (24) is provided on the secondary terminal protection cover body (2), and the elastic groove (24) is used for the wire (3) to pass through. The secondary terminal protection cover body (2) includes a top surface (21), a front side surface (22) and a pair of side surfaces (23). The elastic groove (24) is located on the top surface (21). The secondary terminal protection cover body (2) and the secondary terminal (1) are in snap-fit.

2. The secondary terminal protection cover for a switch according to claim 1, characterized in that: The secondary terminal protection cover body (2) is made of rubber.

3. The secondary terminal protective cover for a switch according to claim 2, wherein: The elastic groove (24) is a preset groove.

4. The secondary terminal protection cover for a switch according to claim 2, characterized in that: The secondary terminal (1) includes an upper terminal part (11) and a lower terminal part (12). The upper terminal part (11) is located at the upper part of the front side of the secondary terminal (1), and the lower terminal part (12) is located at the lower part of the front side of the secondary terminal (1). The upper terminal part (11) is used for the connection of the secondary terminal (1) to the wiring outside the switch, and the lower terminal part (12) is used for the connection of the secondary terminal (1) to the wiring inside the switch. The upper terminal part (11) includes an upper plug-in terminal (100) and a lower plug-in terminal (200). The upper plug-in terminal (100) is in a row, and the lower plug-in terminal (200) is also in a row, and the two are arranged up and down.

5. The secondary terminal protection cover for a switch according to claim 4, characterized in that: On the inner side of the top surface (21), there are positioning protrusions (211). The positioning protrusions (211) are in multiple groups, and each group includes two positioning protrusions (211). The upper terminal part (11) includes partitions (111) and plug-in terminals (112). There are multiple partitions (111) which are respectively located between adjacent plug-in terminals (112). One group of the positioning protrusions (211) clamps the corresponding partition (111).

6. The secondary terminal protection cover for a switch according to claim 4, wherein: On the side surface (23), there is a matching part (231), and the matching part (231) is used for shape matching with the secondary terminal (1). On the inner side of the side surface (23), there is also a stuffing block (232). On the upper terminal part (11), there are also gap cavities (113) located on both sides, and the gap cavities (113) and the stuffing blocks (232) are in filling fit.

7. The secondary terminal protective cover for a switch according to claim 5, wherein: On the inner side of the top surface (21), there is also a positioning post (213). On the upper terminal part (11), there is also an upward positioning hole (114), and the positioning hole (114) and the positioning post (213) are in insertion fit.

8. The secondary terminal protective cover for a switch according to claim 4, characterized in that: On the inner side of the top surface (21), there is also a flange (212). On the upper terminal part (11), there is also a back side (115). After the installation of the secondary terminal protection cover body (2) is completed, the flange (212) and the back side (115) are in snap-fit.

9. The secondary terminal protection cover for a switch according to claim 4, characterized in that: On the lower side of the front side surface (22), there is a flanging (221), and the flanging (221) is snapped on the lower edge of the upper terminal part (11).

10. The secondary terminal protection cover for a switch according to claim 9, characterized in that: A first rib (222) is provided inside the front side surface (22), and a second rib (223) is provided inside the flange (221); both the first rib (222) and the second rib (223) extend along the width direction of the secondary terminal protective cover body (2). The first rib (222) contacts the upper edge of the lower plug-in terminal (200), and the second rib (223) on the flange (221) is embedded into the embedding groove (116) on the lower edge of the upper terminal portion (11).

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