A self-locking surge protector

Abstract

The present invention relates to a self-locking surge protector in the technical field of surge protectors, including a concave base, a varistor, a self-locking device, and a clamping device. The bottom of the concave base is provided with more than five wiring grooves, and sliding grooves are opened at the bottoms of the wiring grooves. Self-locking devices are installed at the tops of the sliding grooves. The self-locking device includes a sliding seat and clamping claws. The sliding seat is movably installed in the wiring groove, and two clamping claws are movably installed at the front end of the sliding seat. The clamping claws are installed through a small shaft at the front end of the sliding seat, and the clamping claws are rotationally matched with the small shaft. The clamping claws are detachable. A variety of grooves are used to prevent installers from installing the varistor in the wrong position. The wire harness is fixed at the wiring port through two fixing methods, namely the self-locking device and the cross screw, to prevent the wire harness from loosening during installation or use. Through the clamping device, the product can be adapted to a variety of rail models, and the convenient installation method reduces the installation time and increases the installation efficiency. At the same time, it is also convenient for later replacement and maintenance, and has a good market prospect.

Description

Technical Field

[0001] The present invention relates to the technical field of surge protectors, and particularly to a self-locking surge protector. Background Art

[0002] A surge protector is a widely used electrical safety protection device, whose function is to limit overvoltage and discharge surge current, so as to provide safety protection for various electronic devices, instruments, and communication lines. The surge protector is generally connected in parallel with the protected device, and when overvoltage occurs, it plays the role of shunting and voltage limiting. In some application scenarios, such as mobile base stations, the surge protector is also called a lightning arrester.

[0003] Currently, most of the mainstream surge protectors on the market are modular surge protectors. Because modular surge protectors have efficient and convenient installation and maintenance, strong adaptability, and good economic benefits, due to the multiple significant advantages of modular surge protectors, they have gradually become the mainstream of surge protector use, resulting in a reduction in the market for integrated surge protectors.

[0004] Currently, most of the bases of modular surge protectors use screws to fix the power connection wires. When exposed to the air or a humid environment for a long time, it may cause the connection wire bundle to age and fall off, indirectly resulting in the surge protector being unable to work properly. When installing a modular surge protector on the distribution box guide rail daily, it may be inconvenient to install due to the inconsistent sizes of the guide rails or the inability of the hook of the modular surge protector base to fit, resulting in the modular surge protector being unable to be installed properly and affecting daily use.

[0005] Based on this, the present invention designs a self-locking surge protector to solve the above problems. Summary of the Invention

[0006] The purpose of the present invention is to provide a self-locking surge protector to solve the problems in the above background art that most of the bases of modular surge protectors use screws to fix the power connection wires. When exposed to the air or a humid environment for a long time, it may cause the connection wire bundle to age and fall off, indirectly resulting in the surge protector being unable to work properly. When installing a modular surge protector on the distribution box guide rail daily, it may be inconvenient to install due to the inconsistent sizes of the guide rails or the inability of the hook of the modular surge protector base to fit, resulting in the modular surge protector being unable to be installed properly and affecting daily use.

[0007] To achieve the above object, the present invention is realized through the following technical solutions: A self-locking surge protector, comprising a concave base, a varistor, a self-locking device and a clamping device. Five or more wiring grooves are provided at the bottom of the concave base. Spring holes are provided at the rear ends of five or more of the wiring grooves. Sliding grooves are provided at the bottoms of the wiring grooves. Self-locking devices are installed at the tops of the sliding grooves. The self-locking device includes a sliding seat and clamping jaws. The sliding seat is movably installed in the wiring groove. Two groups of clamping jaws are movably installed at the front end of the sliding seat. The clamping jaws are installed through a small shaft at the front end of the sliding seat. The clamping jaws are rotatably matched with the small shaft. The clamping jaws are detachable. A retaining ring is movably installed at the top of the small shaft. The rear end of the sliding seat is movably connected to a self-locking spring. The other end of the self-locking spring is movably connected to the spring hole. A semi-circular inner cavity is provided at the top of the sliding seat. A driven hook is movably installed in the semi-circular inner cavity. The driven hook is slidably matched with the sliding groove.

[0008] Preferably, four varistors are movably installed at the top of the inner cavity of the concave base. Anti-slip patterns are provided on the outer walls of the four varistors. A conductive copper sheet is fixedly installed at the bottom of the varistor. A rectangular groove is provided in the inner cavity of the concave base. An elastic clip is movably installed at the bottom of the conductive copper sheet. The elastic clip is fixedly installed in the rectangular groove. Conductive plates are fixedly installed at the bottoms of the wiring grooves. The other ends of the conductive plates are all connected to the elastic clip.

[0009] Preferably, five or more stepped threaded holes are provided at the top of the concave base. Plastic covers are fixedly installed at the tops of five or more of the stepped threaded holes. Cross screws are movably installed in the stepped threaded holes. The cross screws are threadedly matched with the stepped threaded holes. The cross screws are detachable.

[0010] Preferably, a rectangular groove is provided at the left end of the inner cavity of the concave base. A T-shaped groove is provided at the right end of the rectangular groove. A convex groove is provided at the right end of the T-shaped groove. A cross groove is provided at the right end of the convex groove. Baffles are fixedly installed at the left and right ends of the rectangular groove, T-shaped groove, convex groove and cross groove. Four small threaded holes are provided at the bottom of the concave base. The clamping device is fixedly installed on the concave base.

[0011] Preferably, the clamping device includes a clamping plate and a clamping base. The clamping base is fixedly installed at the bottom of the concave base. Three hooks are fixedly installed at the bottom of the clamping base. An n-shaped groove is formed in the inner cavity of the clamping base. A connecting column is arranged at the bottom of the n-shaped groove. A clamping plate is movably installed in the n-shaped groove. The clamping plate is slidably matched with the n-shaped groove. The clamping plate is detachable. Three hooks are fixedly installed at the top of the clamping plate. A connecting column is arranged at the bottom of the clamping plate. Two telescopic springs are arranged in the n-shaped groove. One ends of the two telescopic springs are hooked to the connecting column at the bottom of the n-shaped groove, and the other ends of the two telescopic springs are hooked to the connecting column at the bottom of the clamping plate. The two telescopic springs are both detachable.

[0012] Preferably, the clamping device is fixedly installed at the bottom of the concave base by an internal hexagon screw. The internal hexagon screw is in threaded fit with the small threaded hole of the concave base. The clamping device is detachable.

[0013] Preferably, the clamping jaw, the sliding seat and the driven hook are all made of polyether ether ketone.

[0014] Preferably, the clamping plate and the clamping base are both made of polyphenylene sulfide.

[0015] Preferably, a grounding groove is formed at the bottom of the concave base, and a ground wire connecting plate is fixedly installed in the grounding groove.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0017] Through the structural setting of the self-locking device, the present invention can enable the self-locking device to achieve a clamping effect and fix the wire harness during the installation of the wire harness. The wire harness can be fixed in the wiring groove by the clamping jaw, and then fixedly connected by using a cross screw. Through the fixation of the wire harness by the self-locking device and the cross screw, it can prevent the wire harness from aging and falling off due to long-term exposure to the air or a humid environment. The self-locking device and the cross screw facilitate the installation construction personnel to install the power wire harness at the wiring place of the surge protector, reduce the steps of installing the wire harness, and greatly improve the installation efficiency of the installers. The use effect is very excellent.

[0018] Through the setting of the clamping device, when installing the surge protector, there is no need to compare the size of the installation rail in the distribution box. When installing this device, only need to manually pull up the clamping plate and place it on the rail in the distribution box. After being stretched by the telescopic spring, the hooks at both ends of the clamping plate and the clamping base are adapted to both ends of the rail, and the surge protector can be conveniently installed. There is no need to worry that the bottom hook of the surge protector cannot be adapted to the rail. This device facilitates the installation of the surge protector by construction workers. The convenient installation method reduces the installation time and increases the installation efficiency. At the same time, it is also convenient for later replacement and maintenance. Among them, by arranging rectangular grooves, T-shaped grooves, convex grooves and cross grooves at the position where the varistor is inserted in the concave base, it can prevent installers from installing the varistor in the wrong position. At the same time, since the rectangular grooves, T-shaped grooves, convex grooves and cross grooves can also play a role in clamping and fixing, it can prevent the varistor from falling off due to vibration caused by uncertain factors during use. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0020] Figure 1 It is an exploded structural schematic diagram of the assembly of the present invention;

[0021] Figure 2 It is a structural schematic diagram of the self-locking device of the present invention;

[0022] Figure 3 It is a structural schematic diagram of the varistor of the present invention;

[0023] Figure 4 It is a partial sectional structural schematic diagram of the wiring groove of the present invention;

[0024] Figure 5 It is a top view structural schematic diagram of the concave base of the present invention;

[0025] Figure 6 It is a sectional structural schematic diagram of the position where the sliding groove is located in the present invention;

[0026] Figure 7 It is a structural schematic diagram of the clamping device of the present invention;

[0027] Figure 8 It is a sectional structural schematic diagram of the clamping base of the present invention.

[0028] In the drawings, the list of components represented by each reference numeral is as follows:

[0029] 1 - Concave base, 2 - Sliding groove, 3 - Sliding seat, 4 - Small shaft, 5 - Retaining ring, 6 - Claw, 7 - Driven hook, 8 - Self - locking spring, 9 - Wiring groove, 10 - Step threaded hole, 11 - Rectangular groove, 12 - T - shaped groove, 13 - Convex groove, 14 - Cross groove, 15 - Small threaded hole, 16 - Spring hole, 17 - Baffle, 18 - Cross screw, 19 - Anti - slip pattern, 20 - Elastic clip, 21 - Clamping base, 22 - Plastic cover, 23 - Conductive copper sheet, 24 - Conductive plate, 25 - Clamping plate, 26 - Hook, 27 - n - shaped groove, 28 - Telescopic spring, 29 - Connecting column, 30 - Socket - head cap screw, 31 - Ground wire connection plate, 101 - Self - locking device, 201 - Clamping device, 301 - Varistor. Detailed implementation mode

[0030] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0031] It should be noted that, without conflict, the embodiments in this application and the features in the embodiments can be combined with each other. The following will refer to the attached Figures 1-8 drawings and describe this application in detail in combination with the embodiments.

[0032] Embodiment

[0033] As Figure 1 and Figure 2 shown, it includes a concave base 1, a varistor 301, a self - locking device 101 and a clamping device 201. Five or more wiring grooves 9 are opened at the bottom of the concave base 1. Spring holes 16 are opened at the rear ends of five or more of the wiring grooves 9. Sliding grooves 2 are opened at the bottoms of the wiring grooves 9. Self - locking devices 101 are installed at the tops of the sliding grooves 2. The self - locking device 101 includes a sliding seat 3 and claws 6. The sliding seat 3 is movably installed in the wiring groove 9. Two claws 6 are movably installed at the front end of the sliding seat 3. The claws 6 are installed through the small shaft 4 at the front end of the sliding seat 3. The claws 6 are rotationally matched with the small shaft 4. The claws 6 are detachable. A retaining ring 5 is movably installed at the top of the small shaft 4. The rear end of the sliding seat 3 is movably connected to a self - locking spring 8. The other end of the self - locking spring 8 is movably connected to the spring hole 16. A semi - circular inner cavity is opened at the top of the sliding seat 3. A driven hook 7 is movably installed in the semi - circular inner cavity. The driven hook 7 is slidably matched with the sliding groove 2;

[0034] As Figure 3As shown, four groups of varistors 301 are movably installed at the top of the inner cavity of the concave base 1. Anti-slip patterns 19 are provided on the outer walls of the four groups of varistors 301. A conductive copper sheet 23 is fixedly installed at the bottom of the varistor 301. A rectangular groove is formed in the inner cavity of the concave base 1. An elastic clip 20 is movably installed at the bottom of the conductive copper sheet 23. The elastic clip 20 is fixedly installed in the rectangular groove. Conductive plates 24 are fixedly installed at the bottoms of the wiring grooves 9. The other ends of the conductive plates 24 are all connected to the elastic clips 20;

[0035] More than five stepped threaded holes 10 are formed at the top of the concave base 1. Plastic covers 22 are fixedly installed at the tops of the more than five stepped threaded holes 10. Cross screws 18 are movably installed in the stepped threaded holes 10. The cross screws 18 are in threaded cooperation with the stepped threaded holes 10. The cross screws 18 are detachable;

[0036] As Figure 4 As shown, the clamping device 201 is fixedly installed at the bottom of the concave base 1 through an internal hexagonal screw 30. The internal hexagonal screw 30 is in threaded cooperation with the small threaded hole 15 of the concave base 1. The clamping device 201 is detachable;

[0037] The clamping jaws 6, the sliding seat 3 and the driven hook 7 are all made of polyetheretherketone;

[0038] The clamping plate 25 and the clamping base 21 are all made of polyphenylene sulfide;

[0039] As Figure 6 As shown, a grounding groove is formed at the bottom of the concave base 1. A ground wire connection plate 31 is fixedly installed in the grounding groove.

[0040] The working principle of Embodiment 1 is as follows: Use an electrician's special pliers to clamp the wire harness and press it into the wiring groove 9. Since there is a sliding seat 3 inside the wiring groove 9, when the wire harness exerts a thrust on the sliding seat 3, it moves horizontally backward, causing the self-locking spring 8 to contract under pressure. At the same time, the driven hook 7 movably installed inside the cavity of the sliding seat 3 also moves horizontally backward. Because the sliding seat 3 is forced to move horizontally backward, the two clamping jaws 6 penetrated through the front end by two small shafts 4 also move backward. The small shafts 4 are stuck at the shaft holes of the sliding seat 3 by retaining rings 5 to prevent falling off. Since the two clamping jaws 6 move backward, due to the opening limitation of the wiring groove 9, the two clamping jaws 6 move backward and contract inward at the same time to clamp the wire harness. Since the bottom of the driven hook 7 is slidably matched with the sliding groove 2 at the bottom of the wiring groove 9, the driven hook 7 moves in the sliding groove. Since the sliding groove 2 is set in a stepped manner, when the bottom of the driven hook 7 reaches a certain stroke and cannot retreat, it will stop at the stepped part of the sliding groove 2 under the reaction force of the self-locking spring 8, indirectly causing the sliding seat 3 to be restricted in movement by the driven hook 7. At the same time, the two clamping jaws 6 stop moving backward and contracting, and the wire harness is fixed at the wiring port through the self-locking device 101 to prevent the wire harness from loosening during installation.

[0041] Embodiment

[0042] On the basis of Embodiment 1, as Figure 5 shown, a rectangular groove 11 is opened at the left end of the inner cavity of the concave base 1, a T-shaped groove 12 is opened at the right end of the rectangular groove 11, a convex groove 13 is opened at the right end of the T-shaped groove 12, and a cross groove 14 is opened at the right end of the convex groove 13. Baffles 17 are fixedly installed at both the left and right ends of the rectangular groove 11, T-shaped groove 12, convex groove 13, and cross groove 14. Four groups of small threaded holes 15 are opened at the bottom of the concave base 1, and a clamping device 201 is fixedly installed on the concave base 1;

[0043] As Figure 7 and Figure 8 shown, the clamping device 201 includes a clamping plate 25 and a clamping base 21. The clamping base 21 is fixedly installed at the bottom of the concave base 1. Three hooks 26 are fixedly installed at the bottom of the clamping base 21. An n-shaped groove 27 is opened in the inner cavity of the clamping base 21. A connecting column 29 is installed at the bottom of the n-shaped groove 27. A clamping plate 25 is movably installed in the n-shaped groove 27. The clamping plate 25 is slidably matched with the n-shaped groove 27. The clamping plate 25 is detachable. Three hooks 26 are fixedly installed at the top of the clamping plate 25. A connecting column 29 is installed at the bottom of the clamping plate 25. Two telescopic springs 28 are installed in the n-shaped groove 27. One ends of the two telescopic springs 28 are hooked to the connecting column 29 at the bottom of the n-shaped groove 27, and the other ends of the two telescopic springs 28 are hooked to the connecting column 29 at the bottom of the clamping plate 25. The two telescopic springs 28 are both detachable.

[0044] When implementing this embodiment, since the rectangular groove 11, T-shaped groove 12, convex groove 13, and cross groove 14 are opened in the concave base 1, it prevents installers from installing the varistor 301 in the wrong position. At the same time, since the rectangular groove 11, T-shaped groove 12, convex groove 13, and cross groove 14 can also play a role in clamping and fixing, it prevents the varistor 301 from falling off due to vibrations caused by uncertain factors during use;

[0045] Because the clamping device 201 is installed at the bottom of this product. Since the clamping plate 25 is installed in the n-shaped groove inside the clamping base 21 through the telescopic spring 28, by manually lifting the clamping plate 25, the clamping width at the bottom becomes larger for easy installation. Align the hooks 26 at the bottom of the clamping base 21 with the bottom of the guide rail installed in the distribution box. After alignment, adjust the position of the hooks 26 at the top of the clamping plate 25 to align with the top of the guide rail and slowly release the clamping plate 25. Among them, the hooks 26 can be adapted to various guide rails installed in the distribution box. Under the pulling force of the telescopic spring 28, the clamping plate 25 automatically contracts and clamps, fixing the surge protector on the guide rail conveniently and quickly. Through the clamping device 201, this product can be adapted to a variety of guide rail models.

[0046] In the description of this specification, the descriptions referring to terms such as "one embodiment", "example", "specific example", etc. mean that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0047] The preferred embodiments of the present invention disclosed above are only used to help illustrate the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to the specific embodiments described. Obviously, many modifications and variations can be made according to the content of this specification. These embodiments are selected and specifically described in this specification in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and utilize the present invention well. The present invention is only limited by the claims and their full scope and equivalents.

Claims

1. A self-locking surge protector, comprising a concave base, a varistor, a self-locking device and a clamping device, characterized in that: The bottom of the concave base is provided with more than five wiring grooves. Spring holes are provided at the rear ends of more than five wiring grooves. Sliding grooves are provided at the bottoms of the wiring grooves. Self-locking devices are installed at the tops of the sliding grooves. The self-locking device includes a sliding seat and clamping jaws. The sliding seat is movably installed in the wiring groove. Two groups of clamping jaws are movably installed at the front end of the sliding seat. The clamping jaws are installed through a small shaft at the front end of the sliding seat. The clamping jaws are rotationally matched with the small shaft. The clamping jaws are detachable. A retaining ring is movably installed at the top of the small shaft. The rear end of the sliding seat is movably connected to a self-locking spring. The other end of the self-locking spring is movably connected to the spring hole. A semi-circular inner cavity is provided at the top of the sliding seat. A driven hook is movably installed in the semi-circular inner cavity. The driven hook is slidably matched with the sliding groove; Four groups of varistors are movably installed at the top of the inner cavity of the concave base. Anti-slip patterns are provided on the outer walls of the four groups of varistors. A conductive copper sheet is fixedly installed at the bottom of the varistor. A rectangular groove is provided in the inner cavity of the concave base. An elastic clip is movably installed at the bottom of the conductive copper sheet. The elastic clip is fixedly installed in the rectangular groove. Conductive plates are fixedly installed at the bottoms of the wiring grooves. The other ends of the conductive plates are all connected to the elastic clips.

2. The self-locking surge protector according to claim 1, characterized in that: More than five stepped threaded holes are provided at the top of the concave base. Plastic covers are fixedly installed at the tops of more than five stepped threaded holes. Cross screws are movably installed in the stepped threaded holes. The cross screws are threadedly matched with the stepped threaded holes. The cross screws are detachable.

3. The self-locking surge protector according to claim 2, characterized in that: A rectangular groove is provided at the left end of the inner cavity of the concave base. A T-shaped groove is provided at the right end of the rectangular groove. A convex groove is provided at the right end of the T-shaped groove. A cross groove is provided at the right end of the convex groove. Baffles are fixedly installed at the left and right ends of the rectangular groove, T-shaped groove, convex groove, and cross groove. Four small threaded holes are provided at the bottom of the concave base. A clamping device is fixedly installed on the concave base.

4. The self-locking surge protector according to claim 3, characterized in that: The clamping device includes a clamping plate and a clamping base. The clamping base is fixedly installed at the bottom of the concave base. Three hooks are fixedly installed at the bottom of the clamping base. An n-shaped groove is provided in the inner cavity of the clamping base. A connecting column is installed at the bottom of the n-shaped groove. A clamping plate is movably installed in the n-shaped groove. The clamping plate is slidably matched with the n-shaped groove. The clamping plate is detachable. Three hooks are fixedly installed at the top of the clamping plate. A connecting column is installed at the bottom of the clamping plate. Two telescopic springs are installed in the n-shaped groove. One ends of the two telescopic springs are hooked to the connecting column at the bottom of the n-shaped groove. The other ends of the two telescopic springs are hooked to the connecting column at the bottom of the clamping plate. The two telescopic springs are detachable.

5. The self-locking surge protector according to claim 4, characterized in that: The clamping device is fixedly installed at the bottom of the concave base through an internal hexagonal screw. The internal hexagonal screw is threadedly matched with the small threaded hole at the bottom of the concave base. The clamping device is detachable.

6. The self-locking surge protector according to claim 1, characterized in that: The clamping jaws, sliding seat, and driven hook are all made of polyether ether ketone material.

7. The self-locking surge protector according to claim 4, wherein: The clamping plate and clamping base are both made of polyphenylene sulfide material.

8. The self-locking surge protector according to claim 3, characterized in that: A grounding groove is provided at the bottom of the concave base. A ground wire connection plate is fixedly installed in the grounding groove.

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