Surge protector with backup protection

Abstract

The present invention relates to the technical field of surge protectors, and in particular to a surge protector with backup protection, comprising a protective shell, wherein a wiring board is fixedly provided inside the protective shell, wherein the wiring board is used for conductive connection with a wire, wherein the wiring board has a first end and a second end, wherein the first end of the wiring board is rotatably connected to an adjusting bolt, wherein a wire pressing frame is threadedly connected to the adjusting bolt, wherein the rotation of the adjusting bolt can drive the wire pressing frame to move up and down, thereby shortening the distance between the wire pressing frame and the second end of the wiring board, thereby pressing the wire, wherein the wire pressing frame is made by integrally bending an elastic metal plate, wherein the wire pressing frame has N layers of connecting plates formed by folding, wherein the N layers of connecting plates are distributed in an up-and-down direction, wherein N is greater than or equal to 8, wherein a rectangular frame is formed by bending between the two lowest connecting plates, wherein the rectangular frame is used for pressing the wire, wherein each connecting plate is provided with a threaded hole, wherein the adjusting bolt cooperates with the threaded hole, and wherein the adjusting bolt and the wire pressing frame are not easy to slip.

Description

Technical Field

[0001] The invention relates to the technical field of surge protectors, and in particular to a surge protector with backup protection. Background Art

[0002] Surge protectors are mainly used to protect equipment from the impact of spike voltage or current. Existing surge protectors, such as the patent document with announcement number CN218385084U, disclose a surge protector with built-in fuse protection, in which a wire pressing frame is threaded with a wire pressing bolt, and the positive and negative wires are connected to the wire pressing frame and locked with the wire pressing bolt. However, since the thickness of this wire pressing frame is usually thin, the bolt is easy to slip when the wire pressing frame is matched with the bolt, which causes the wire pressing to be loose, affecting the normal use of the surge protector. Summary of the invention

[0003] Based on this, it is necessary to provide a surge protector with backup protection to address the technical problem that the current wire pressing frame and the bolt are prone to slipping when they are matched.

[0004] The above purpose is achieved through the following technical solutions:

[0005] A surge protector with backup protection comprises a protective shell, wherein a terminal block is fixedly provided inside the protective shell, the terminal block is used for conductive connection with a wire, the terminal block has a first end and a second end, the first end of the terminal block is rotatably connected to an adjusting bolt, a wire pressing frame is threadedly connected to the adjusting bolt, the rotation of the adjusting bolt can drive the wire pressing frame to move up and down, so that the distance between the wire pressing frame and the second end of the terminal block is shortened, thereby pressing the wire, the wire pressing frame is made by integrally bending an elastic metal plate, the wire pressing frame has N layers of connecting plates formed by folding, the N layers of connecting plates are distributed in the up and down direction, N is greater than or equal to 8, the two lowest connecting plates are bent to form a rectangular frame, the rectangular frame is used for pressing the wire, each connecting plate is provided with a threaded hole, and the adjusting bolt cooperates with the threaded hole.

[0006] Further, N is equal to 14.

[0007] Furthermore, in the initial state, two adjacent connecting plates are arranged obliquely; when the adjusting bolt is threadedly connected to a plurality of threaded holes at the same time, the two adjacent connecting plates are arranged in parallel.

[0008] Furthermore, the adjusting bolt is provided with a first threaded section, and the first threaded section can be threadedly connected with all the threaded holes at the same time.

[0009] Furthermore, a retaining spring is provided on the adjusting bolt, and the retaining spring is located between the uppermost connecting plate and the first end of the terminal block.

[0010] Furthermore, the adjusting bolt is provided with a clamping section, a smooth section and a second threaded section in sequence from top to bottom, the clamping section includes a plurality of limit rings distributed up and down, the limit rings can cooperate with the inclined connecting plate in the up and down directions, the smooth section is a smooth rod, the outer diameter of the smooth section is smaller than the inner diameter of the threaded hole, and the second threaded section is threadedly connected to the threaded hole of part of the connecting plate.

[0011] Furthermore, the outer diameter of the limiting ring is consistent with the inner diameter of the threaded hole.

[0012] Furthermore, the bending direction of the connecting plate is set to be the left-right direction, and the dimension of the rectangular frame in the left-right direction is greater than the dimension of the connecting plate in the left-right direction.

[0013] Furthermore, the protective shell is provided with a first wire inlet hole, the wiring board is provided with a second wire inlet hole, and the first wire inlet hole corresponds to the second wire inlet hole.

[0014] Furthermore, the wiring board is a U-shaped board, the U-shaped board includes a first horizontal board and a second horizontal board arranged horizontally, a vertical board is connected between the first horizontal board and the second horizontal board, the first end is located on the first horizontal board, the second end is located on the second horizontal board, and the second wire entry hole is located on the vertical board. The beneficial effects of the present invention are:

[0015] The surge protector with backup protection provided by the present invention has a wire pressing frame with multiple threaded holes, and the adjusting bolt is threadedly connected to the multiple threaded holes at the same time, so it is not easy to slip; at the same time, the adjusting bolt can rotate in a large angle range, and thus the wire pressing frame can move up and down in a large range, and the compression degree of the wire can be adjusted with higher accuracy.

[0016] In addition, the wire pressing frame will undergo elastic deformation during the process of pressing the wire. Compared with the prior art in which the adjusting bolt directly and rigidly contacts the wire, this elastic contact is less likely to cause deformation of the wire, thereby extending the service life of the wire. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A schematic diagram of the overall structure of a surge protector with backup protection provided by an embodiment of the present invention;

[0018] Figure 2 for Figure 1 A magnified view of the structure at center;

[0019] Figure 3 A front view of a surge protector with backup protection provided by an embodiment of the present invention;

[0020] Figure 4 for Figure 3 Middle BB section view;

[0021] Figure 5 for Figure 4 A magnified view of the structure at C in the middle;

[0022] Figure 6 A schematic structural diagram of a first embodiment of a medium-voltage wire frame of a surge protector with backup protection provided by an embodiment of the present invention;

[0023] Figure 7 A schematic diagram of a first state of a second embodiment of a medium voltage wire frame of a surge protector with backup protection provided by an embodiment of the present invention;

[0024] Figure 8 A schematic diagram of a second state of a second embodiment of a medium voltage wire frame of a surge protector with backup protection provided by an embodiment of the present invention;

[0025] Fig. 9 A schematic diagram of a third state of a second embodiment of a medium voltage wire frame of a surge protector with backup protection provided by an embodiment of the present invention.

[0026] in:

[0027] 101. Protective shell; 1011. First wire entry hole; 102. Handle; 103. Contact; 104. Lock; 105. Core coil; 106. Tension spring; 107. Flexible connecting wire; 108. Terminal block; 1081. Second wire entry hole; 200. Wire pressing frame; 201. First adjusting bolt; 2011. First threaded section; 202. Retaining ring; 203. Connecting plate; 2031. Threaded hole; 204. Second adjusting bolt; 2041. Second threaded section; 2042. Light rod; 2043. Limiting ring. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below through embodiments and in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0029] The serial numbers assigned to the components herein, such as "first", "second", etc., are only used to distinguish the objects described and do not have any order or technical meaning. The "connection" and "coupling" mentioned in this application, unless otherwise specified, include direct and indirect connections (couplings). In the description of the present invention, it should be understood that the orientation or position relationship indicated by the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", etc. are based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present invention.

[0030] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0031] like Figures 1 to 6 As shown, a surge protector with backup protection provided by an embodiment of the present invention includes a protective shell 101, a terminal block 108 is fixedly provided inside the protective shell 101, the terminal block 108 is used to be conductively connected to the wire, the terminal block 108 has a first end and a second end, the first end of the terminal block 108 is rotatably connected to an adjusting bolt, and a wire pressing frame 200 is threadedly connected to the adjusting bolt, and the rotation of the adjusting bolt can drive the wire pressing frame 200 to move up and down, so that the distance between the wire pressing frame 200 and the second end of the terminal block 108 is shortened to compress the wire, and the wire pressing frame 200 is made of an elastic metal plate that is integrally bent, and the wire pressing frame 200 has N layers of connecting plates 203 formed by folding, and the N layers of connecting plates 203 are distributed in the up and down directions, N is greater than or equal to 8, and the two lowest connecting plates 203 are bent to form a rectangular frame, and the rectangular frame is used to press the wire, and each connecting plate 203 is provided with a threaded hole 2031, and the adjusting bolt cooperates with the threaded hole 2031.

[0032] In this way, the wire pressing frame 200 has multiple threaded holes 2031, and the adjusting bolt is threadedly connected to the multiple threaded holes 2031 at the same time, which is not easy to slip; at the same time, the adjusting bolt can rotate in a large angle range, and thus the wire pressing frame 200 can move up and down in a large range, and the compression degree of the wire can be adjusted with higher accuracy; in addition, when the wire pressing frame 200 is in the process of compressing the wire, the wire pressing frame 200 will undergo elastic deformation. Compared with the prior art in which the adjusting bolt directly contacts the wire rigidly, this elastic contact is not easy to cause deformation of the wire, thereby extending the service life of the wire.

[0033] The protective shell 101 is fixedly provided with an iron core coil 105 inside, and is also provided with a dynamic touch operating mechanism, which includes a handle 102, a tension spring 106, a contact 103 and a lock 104. The iron core coil 105 is arranged corresponding to the contact 103; one end of the tension spring 106 is connected to the protective shell 101, and the other end is connected to the contact 103, which is used to reset the contact 103; the contact 103 is connected to the terminal block 108 through a flexible connecting line 107. When the peak current is transmitted to the iron core coil 105, the dynamic touch operating mechanism is triggered to realize the automatic tripping of the contact 103, thereby disconnecting the circuit. The specific working principle of the surge protector is the same as that in the prior art.

[0034] In one embodiment, N is equal to 14. This allows the adjustment accuracy of the wire pressing frame 200 to be higher.

[0035] In one embodiment, in the initial state, two adjacent connecting plates 203 are arranged obliquely; when the adjusting bolt is threadedly connected with the multiple threaded holes 2031 at the same time, the two adjacent connecting plates 203 are arranged in parallel. In the initial state, the two adjacent connecting plates 203 are arranged obliquely due to the elasticity of the wire pressing frame 200; when the adjusting bolt is threadedly connected with the multiple threaded holes 2031, the wire pressing frame 200 is stretched in the up-down direction, so that the two adjacent connecting plates 203 are arranged in parallel.

[0036] In one embodiment, if Figure 6 As shown, the adjusting bolt is a first adjusting bolt 201 , and a first threaded section 2011 is provided on the first adjusting bolt 201 . The first threaded section 2011 can be threadedly connected with all the threaded holes 2031 at the same time.

[0037] In one embodiment, a clamping spring 202 is provided on the first adjusting bolt 201, and the clamping spring 202 is located between the uppermost connecting plate 203 and the first end of the terminal board 108. The clamping spring 202 can prevent the first adjusting bolt 201 from moving upward and thus detaching from the wire pressing frame 200, so that the first adjusting bolt 201 can only rotate.

[0038] In one embodiment, the bending direction of the connecting plate 203 is set to be the left-right direction, and the size of the rectangular frame in the left-right direction is greater than the size of the connecting plate 203 in the left-right direction.

[0039] In one embodiment, the protective shell 101 is provided with a first wire entry hole 1011, and the wiring board 108 is provided with a second wire entry hole 1081, and the first wire entry hole 1011 corresponds to the second wire entry hole 1081. The wire enters the wiring board 108 through the first wire entry hole 1011 and the second wire entry hole 1081.

[0040] In one embodiment, the terminal block 108 is a U-shaped plate, and the U-shaped plate includes a first horizontal plate and a second horizontal plate which are horizontally arranged, a vertical plate is connected between the first horizontal plate and the second horizontal plate, the first end is located on the first horizontal plate, the second end is located on the second horizontal plate, and the second wire entry hole 1081 is located on the vertical plate.

[0041] The use principle and working process of the first embodiment of the present invention are as follows:

[0042] By rotating the first adjusting bolt 201, the wire pressing frame 200 can be moved up and down along the first adjusting bolt 201 as a whole. When the wire pressing frame 200 moves downward along the first adjusting bolt 201 and contacts the wire, the wire pressing frame 200 will be elastically deformed, thereby elastically contacting the wire, pressing the wire while avoiding damage to the wire.

[0043] In another embodiment, if Figures 7 to 9 As shown, what is different from the above embodiment is that the adjusting bolt is a second adjusting bolt 204, and the second adjusting bolt 204 is provided with a clamping section, a smooth section and a second threaded section 2041 from top to bottom in sequence, and the clamping section includes a plurality of limit rings 2043 distributed up and down, and the limit rings 2043 can cooperate with the inclined connecting plate 203 in the up and down directions, and the smooth section is a smooth rod 2042, and the outer diameter of the smooth section is smaller than the inner diameter of the threaded hole 2031, and the second threaded section 2041 is threadedly connected to the threaded hole 2031 of part of the connecting plate 203.

[0044] Furthermore, the outer diameter of the limiting ring 2043 is consistent with the inner diameter of the threaded hole 2031 .

[0045] The use principle and working process of the second embodiment of the present invention are as follows:

[0046] When in use, the second adjusting bolt 204 is rotated to make the second threaded section 2041 thereon threadedly connected with the lower connecting plate 203, the middle light rod 2042 is slidingly matched with the middle connecting plate 203, and the upper connecting plate 203 is tilted. Since the tilted connecting plate 203 has its threaded hole 2031 also tilted, its threaded hole 2031 can be matched with the limit ring 2043 in the upper and lower directions. At this time, it is the first state where the wire pressing frame 200 is not in contact with the wire.

[0047] Then insert the wire into the first wire entry hole 1011 and the second wire entry hole 1081, and rotate the second adjusting bolt 204 in the opposite direction to gradually move the wire pressing frame 200 downward. The wire pressing frame 200 squeezes and fixes the wire, and the second threaded segment 2041 is no longer threadedly connected to the lower connecting plate 203, but is gradually threadedly connected to the middle connecting plate 203. Since the upper connecting plate 203 and the limit ring 2043 are blocked in the upper and lower directions, the upper connecting plate 203 cannot move downward, so that the middle connecting plate 203 is stretched downward. At this time, the wire pressing frame 200 is in the second state of contact with the wire.

[0048] Finally, the second adjusting bolt 204 is rotated in the reverse direction, and the second threaded section 2041 is gradually threadedly connected with the upper connecting plate 203, and the middle and lower connecting plates 203 are no longer connected with the second adjusting bolt 204, and the lower half of the wire pressing frame 200 can be compressed and present a spring-like telescopic state, which is the third state in which the wire pressing frame 200 elastically compresses the wire. Since the lower half of the wire pressing frame 200 can be telescopic, the wire can be easily replaced in the third state, which is convenient for debugging.

[0049] Due to the setting of the limiting ring 2043, when the wire pressing frame 200 is in the first state and the second state, the upper inclined connecting plate 203 and the limiting ring 2043 are blocked, which can limit the second adjusting bolt 204 and prevent the second adjusting bolt 204 from upwardly separating from the wire pressing frame 200. In this way, there is no need to set a retaining spring 202 for locking, which can reduce the installation of components and make the structure of the surge protector simpler.

[0050] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0051] The above-described embodiments only express several implementation methods of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the present invention. It should be pointed out that, for a person of ordinary skill in the art, several modifications and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the attached claims.

Claims

1. A surge protector with backup protection, characterized in that: It includes a protective shell, a terminal block is fixedly provided inside the protective shell, the terminal block is used to be conductively connected to the wire, the terminal block has a first end and a second end, the first end of the terminal block is rotatably connected to an adjusting bolt, and a wire pressing frame is threadedly connected to the adjusting bolt, the rotation of the adjusting bolt can drive the wire pressing frame to move up and down, so that the distance between the wire pressing frame and the second end of the terminal block is shortened to compress the wire, the wire pressing frame is made of an elastic metal plate that is bent in one piece, the wire pressing frame has N layers of connecting plates formed by folding, the N layers of connecting plates are distributed in the up and down directions, N is greater than or equal to 8, and a rectangular frame is bent between the two lowest connecting plates, the rectangular frame is used to press the wire, each connecting plate is provided with a threaded hole, the adjusting bolt cooperates with the threaded hole, and in the initial state, two adjacent connecting plates are inclined; when the adjusting bolt is threadedly connected to multiple threaded holes at the same time, the two adjacent connecting plates are arranged in parallel.

2. The surge protector with backup protection according to claim 1, characterized in that: N is equal to 14.

3. The surge protector with backup protection according to claim 1, characterized in that: The adjusting bolt is provided with a first thread section, and the first thread section can be threadedly connected with all the threaded holes at the same time.

4. The surge protector with backup protection according to claim 3, characterized in that: The adjusting bolt is provided with a retaining spring, and the retaining spring is located between the uppermost connecting plate and the first end of the wiring board.

5. The surge protector with backup protection according to claim 1, characterized in that: The adjusting bolt is provided with a clamping section, a smooth section and a second threaded section in sequence from top to bottom. The clamping section includes a plurality of limit rings distributed up and down, and the limit rings can cooperate with the inclined connecting plate in the up and down directions. The smooth section is a smooth rod, and the outer diameter of the smooth section is smaller than the inner diameter of the threaded hole. The second threaded section is threadedly connected to the threaded hole of part of the connecting plate.

6. The surge protector with backup protection according to claim 5, characterized in that: The outer diameter of the limiting ring is consistent with the inner diameter of the threaded hole.

7. The surge protector with backup protection according to claim 1, characterized in that: The bending direction of the connecting plate is set to be the left-right direction, and the dimension of the rectangular frame in the left-right direction is greater than the dimension of the connecting plate in the left-right direction.

8. The surge protector with backup protection according to claim 1, characterized in that: The protective shell is provided with a first wire inlet hole, the wiring board is provided with a second wire inlet hole, and the first wire inlet hole corresponds to the second wire inlet hole.

9. The surge protector with backup protection according to claim 8, characterized in that: The terminal block is a U-shaped block, which includes a first horizontal block and a second horizontal block arranged horizontally, a vertical block is connected between the first horizontal block and the second horizontal block, the first end is located on the first horizontal block, the second end is located on the second horizontal block, and the second wire entry hole is located on the vertical block.

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