Wiring terminal structure of fuse base

Abstract

The utility model relates to the field of fuses, in particular to a wiring terminal structure of a fuse base, which comprises a base body and a bolt used for being connected with a cable, the base body is connected with a contact, the contact is provided with a connecting hole, the contact is connected with a limiting piece, the limiting piece is provided with a clamping hole, the inner wall of the clamping hole is connected with an elastic piece, and the elastic piece is connected with the connecting hole. The limiting piece is connected with a limiting strip, the rod portion of the bolt sequentially penetrates through the connecting hole and the clamping hole, the elastic piece is used for limiting the rod portion of the bolt, and the limiting strip is used for limiting the head portion of the bolt. The cable connecting device has the following effects that a cable can be conveniently connected to the bolt, so that the working efficiency of workers is improved.

Description

Technical Field

[0001] The present application relates to the field of fuses, and in particular to a wiring terminal structure of a fuse base. Background Art

[0002] At present, fuses are safety devices used in electrical systems. Their main function is to cut off the current when an overload or short circuit occurs in the circuit, thereby protecting the circuit and equipment from damage. Fuses are usually made of conductor wire or conductor strip. When the current exceeds the rated value, the conductor will melt due to heat, thereby cutting off the circuit. This helps prevent wires, switches and other equipment from overheating and causing fires or other dangers. Fuses are widely used in household and industrial electricity to ensure the safe operation of circuits and equipment.

[0003] The wiring terminals of the fuse base are an important part used to connect the wires and fuses in the circuit. Usually, there are two wiring terminals on the fuse base, one for connecting the incoming wire (power input) and the other for connecting the outgoing wire (circuit load). When installing the fuse, you need to connect the incoming and outgoing wires to the two terminals of the base respectively, ensuring that the connection is firm and reliable to ensure the normal operation and safety of the circuit.

[0004] The existing cable connection method of the fuse base is: a bolt is connected to the contact and connected to the external cable through the bolt. However, after the bolt is connected to the contact, when the cable is connected to the bolt, the bolt is easy to loosen, making it difficult to connect the cable and causing low efficiency of the staff. Utility Model Content

[0005] In order to facilitate the connection of cables to bolts and improve the work efficiency of staff, the present application provides a wiring terminal structure of a fuse base.

[0006] The present application provides a wiring terminal structure of a fuse base, which adopts the following technical solution:

[0007] A terminal structure for a fuse base comprises a base body and a bolt for connecting to a cable, the base body being connected to a contact, the contact being provided with a connecting hole, the contact being connected to a limiting plate, the limiting plate being provided with a snap-in hole, the inner wall of the snap-in hole being connected to an elastic plate, the limiting plate being connected to a limiting strip, the rod of the bolt sequentially passes through the connecting hole and the snap-in hole, the elastic plate is used to limit the rod of the bolt, and the limiting strip is used to limit the head of the bolt.

[0008] By adopting the above technical solution, the staff first passes the bolt through the connecting hole and the clamping hole, the elastic sheet can limit the rod of the bolt, and the limit strip can limit the head of the bolt, thereby improving the stability of the bolt on the contact. The staff then connects the cable to the bolt, thereby avoiding loosening when the bolt and cable are connected, and then facilitating the connection of the cable to the bolt, thereby improving the work efficiency of the staff.

[0009] Preferably, there are multiple elastic sheets, and each of the elastic sheets is distributed at equal angles along the circumference of the clamping hole. The end of the elastic sheet away from the inner wall of the clamping hole is arranged close to the central axis of the clamping hole. The end of each elastic sheet away from the inner wall of the clamping hole is spaced to form a limiting hole, and the diameter of the limiting hole is smaller than the major diameter of the external thread of the bolt and larger than the minor diameter of the external thread of the bolt.

[0010] By adopting the above technical solution, after the bolt passes through the connecting hole and the clamping hole in sequence, one end of each elastic sheet can be inserted into the thread of the bolt, so as to avoid the bolt from moving along the central axis direction of the clamping hole as much as possible. Each elastic sheet can limit the bolt in this way, and setting a plurality of elastic sheets can improve the limiting effect of the bolt.

[0011] Preferably, the bolt sleeve is provided with a flat washer, the bolt thread is connected with a nut, and the flat washer is located between the nut and the limiting plate.

[0012] By adopting the above technical solution, after the cable is connected to the bolt, the staff will put the flat washer on the bolt, and then thread the nut to the bolt. When the nut is turned, the flat washer can be pressed against the cable. By adding the flat washer, it can be avoided as much as possible that the nut will not drive the cable to rotate when it rotates and contacts the cable. The nut and the flat washer can improve the connection strength between the cable and the bolt.

[0013] Preferably, the bolt sleeve is provided with a spring washer, and the spring washer is located between the flat washer and the nut.

[0014] By adopting the above technical solution, after adding a spring washer between the flat washer and the nut, the spring washer can press the cable against the contact through the flat washer, which can avoid the loosening of the nut and the resulting loosening of the cable, thereby improving the connection firmness between the cable and the bolt.

[0015] Preferably, the contact includes a connecting portion and a clamping portion, the connecting hole is opened in the connecting portion, the clamping portion is provided with a clamping hole, the clamping portion is provided with an elastic clip, and the top of the elastic clip is clamped at both ends of the clamping portion along the width direction of the clamping hole.

[0016] By adopting the above technical solution, the clamping part can clamp the fuse through the clamping hole, so that the fuse can be connected to the cable. The elastic clip can clamp the clamping part to increase the clamping force of the clamping part on the fuse, thereby improving the clamping stability of the clamping part on the fuse.

[0017] Preferably, the connecting part is provided with an inserting groove, and the bottom of the elastic clip is inserted into the connecting part through the inserting groove. The connecting part is penetrated by a screw, and the screw passes through one end of the connecting part and is threadedly connected to the seat body, and the head of the screw limits the elastic clip.

[0018] By adopting the above technical solution, the elastic clip is plugged into the connecting part through the plug-in slot, and the screw can limit the elastic clip after connecting the connecting part to the seat body, which can improve the plug-in stability of the elastic clip on the connecting part, thereby improving the clamping stability of the elastic clip on the clamping part.

[0019] Preferably, the clamping portion is provided with a limiting groove, and the top of the elastic clip is plugged into the clamping portion through the limiting groove.

[0020] By adopting the above technical solution, after the top of the elastic clip is plugged into the clamping part, the elastic clip and the clamping part can be prevented from being separated as much as possible, and the clamping stability of the elastic clip on the clamping part can be improved.

[0021] Preferably, the seat body is plugged with a cover body, and the cover body is arranged to cover the contact and the bolt.

[0022] By adopting the above technical solution, the cover can protect the contacts and the bolts, and can minimize damage to the connection between the fuse and the contact, and the connection between the cable and the bolt.

[0023] In summary, the present application includes at least one of the following beneficial technical effects:

[0024] 1. The staff first passes the bolt through the connection hole and the clamping hole. The elastic sheet can limit the rod of the bolt, and the limit strip can limit the head of the bolt, so as to improve the stability of the bolt on the contact. The staff then connects the cable to the bolt, so as to avoid loosening when the bolt and cable are connected, and then it is convenient to connect the cable to the bolt, so as to improve the work efficiency of the staff;

[0025] 2. After the bolt passes through the connecting hole and the clamping hole in sequence, one end of each elastic sheet can be inserted into the thread of the bolt, so as to prevent the bolt from moving along the central axis of the clamping hole as much as possible. Each elastic sheet can limit the bolt in this way. Arranging multiple elastic sheets can improve the limiting effect of the bolt;

[0026] 3. The clamping part can clamp the fuse through the clamping hole, so that the fuse can be connected to the cable. The elastic clip can clamp the clamping part to increase the clamping force of the clamping part on the fuse, thereby improving the clamping stability of the clamping part on the fuse. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1It is a schematic diagram of the overall structure of a terminal block structure of a fuse base according to an embodiment of the present application.

[0028] Figure 2 It is a schematic diagram of the exploded structure of a terminal structure of a fuse base in an embodiment of the present application.

[0029] Figure 3 It is a partial structural schematic diagram of a terminal structure of a fuse base in an embodiment of the present application.

[0030] Figure 4 It is a partial structural top view of a terminal structure of a fuse base in an embodiment of the present application.

[0031] Figure 5 is along Figure 4 Schematic diagram of the cross-sectional structure along line AA.

[0032] Description of reference numerals:

[0033] 100. Base body;

[0034] 200, bolt; 201, flat washer; 202, spring washer; 203, nut;

[0035] 300, contact; 301, connection hole; 302, connection part; 303, clamping part; 304, clamping hole; 305, plug-in slot; 306, limit slot;

[0036] 400, limiting piece; 401, snap-in hole; 402, elastic piece; 403, limiting strip; 404, limiting hole;

[0037] 500, elastic clip;

[0038] 600, screws;

[0039] 700. Cover body. DETAILED DESCRIPTION

[0040] The present application is further described in detail below in conjunction with all the accompanying drawings.

[0041] The embodiment of the present application discloses a terminal structure of a fuse base. Figure 1 and Figure 2 The terminal structure of the fuse base includes a base body 100, the base body 100 is connected to a contact 300, the top of the contact 300 is connected to a limiting plate 400, the contact 300 is penetrated by a bolt 200, the bolt 200 is used to connect with the cable, one end of the bolt 200 passes through the contact 300 and passes through the limiting plate 400, the limiting plate 400 is used to limit the bolt 200, which can avoid the bolt 200 from loosening when connected to the cable, and then it is convenient to connect the cable to the bolt 200, so as to improve the work efficiency of the staff.

[0042] Reference Figure 2 and Figure 3 The seat body 100 is block-shaped, and there are two contacts 300. The two contacts 300 are detachably connected to the top of the two ends of the seat body 100 along the length direction. A cover body 700 is inserted on the top of the seat body 100, and the cover body 700 is covered on the contact 300 and the bolt 200. The contact 300 includes a connecting portion 302 and a clamping portion 303. The connecting portion 302 is in the shape of a horizontally arranged sheet, and the clamping portion 303 is in the shape of a vertically arranged sheet and the bottom end is fixed to one end of the connecting portion 302. The connecting portion 302 is penetrated by a screw 600, and the screw 600 passes through one end of the connecting portion 302 and is threadedly connected to the top of the seat body 100. One end of the connecting portion 302 away from the clamping portion 303 extends away from the seat body 100 and is provided with a connecting hole 301, and the connecting hole 301 is for the bolt 200 to pass through.

[0043] A limiting piece 400 is horizontally arranged at the top of one end of the connecting portion 302 away from the clamping portion 303. The limiting piece 400 is rectangular and both ends of the bottom along the width direction of the connecting portion 302 are connected to limiting strips 403, and the length direction of the limiting strips 403 is consistent with the length direction of the connecting portion 302. In this embodiment, the limiting piece 400 is slidably connected to the top of the connecting portion 302 through the limiting strips 403, and the limiting strips 403 are located at the bottom of the connecting portion 302. In other embodiments, the limiting piece 400 is an elastic iron bar, and the staff pry apart the two limiting strips 403 and place the limiting piece 400 on the top of the connecting portion 302, and the limiting strips 403 are deformed and restored, so that the limiting piece 400 can be buckled on the top of the connecting portion 302.

[0044] The limiting piece 400 is provided with a clamping hole 401, and the inner peripheral wall of the clamping hole 401 is connected with a plurality of elastic pieces 402, and each elastic piece 402 is distributed at equal angles along the circumference of the clamping hole 401, one end of the elastic piece 402 is connected to the inner peripheral wall of the clamping hole 401, and the other end of the elastic piece 402 is inclined upward and extends toward the central axis of the clamping hole 401, and each elastic piece 402 is spaced at one end close to the central axis of the clamping hole 401 to form a limiting hole 404. The diameter of the limiting hole 404 is smaller than the major diameter of the external thread of the bolt 200 and larger than the minor diameter of the external thread of the bolt 200.

[0045] After the limiting plate 400 is installed on the top of the connecting part 302, the central axis of the connecting hole 301, the central axis of the clamping hole 401 and the central axis of the limiting hole 404 are in a straight line. The bolt 200 adopts a hexagonal bolt 200. The rod of the bolt 200 passes through the connecting hole 301, the clamping hole 401 and the limiting hole 404 in sequence from the bottom of the connecting part 302 to the top. One end of the elastic plate 402 is inserted into the thread of the rod of the bolt 200. The head of the bolt 200 contacts with two limiting strips 403 on both sides along the width direction of the connecting part 302 respectively. The limiting strips 403 limit the head of the bolt 200 to avoid the bolt 200 from rotating as much as possible.

[0046] Reference Figure 4 and Figure 5 The bolt 200 is provided with a flat washer 201, a spring washer 202 and a nut 203. The spring washer 202 is located between the flat washer 201 and the nut 203. The nut 203 is threadedly connected to the bolt 200. After one end of the cable is connected to the bolt 200, it is located between the elastic sheet 402 and the flat washer 201.

[0047] Reference Figure 2 and Figure 3 The clamping part 303 has a clamping hole 304 at the top, and the length direction of the clamping hole 304 is arranged along the vertical direction and the top passes through the top of the clamping part 303. One end of the fuse is inserted into the clamping hole 304 from the top of the clamping part 303, and the clamping part 303 clamps one end of the fuse. The clamping part 303 has limiting grooves 306 on both sides along the width direction of the clamping hole 304, and a plug-in groove 305 is arranged on the top of the end where the connecting part 302 and the clamping part 303 are connected. The clamping part 303 is provided with an elastic clip 500, and the bottom end of the elastic clip 500 is plugged into the top of the connecting part 302 through the plug-in groove 305. The top of the elastic clip 500 has two ends, which are respectively plugged into the two sides of the top of the clamping part 303 through two limiting grooves 306, and the two ends of the top of the elastic clip 500 clamp the clamping part 303 due to elasticity. After the screw 600 is connected to the connecting portion 302 , the head of the screw 600 contacts the bottom end of the elastic clip 500 , thereby limiting the position of the elastic clip 500 .

[0048] The implementation principle of the terminal structure of a fuse base in an embodiment of the present application is as follows: the staff first inserts the bottom of the elastic clip 500 into the insertion slot 305, and then inserts the two ends of the top of the elastic clip 500 into the limit slots 306, and installs the connecting part 302 on the top of the base body 100 by means of screws 600, thereby completing the installation of the contact 300. The limit plate 400 is slidably installed to the connecting part 302 through the limit bar 403, and the bolt 200 passes through the connecting part 302 and the limit plate 400 from the bottom of the connecting part 302 to the top. After one end of the elastic plate 402 is inserted into the thread of the bolt 200, the bolt 200 can be limited in the vertical direction. The limit bar 403 limits the bolt 200 to prevent the bolt 200 from rotating as much as possible, and then the cable is connected to the bolt 200. The bolt 200 is then successively covered with a flat washer 201 and a spring washer 202. The nut 203 is connected to the bolt 200 to press the cable through the flat washer 201 and the spring washer 202, and finally the cover body 700 is plugged into the seat body 100.

[0049] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A terminal structure for a fuse base, characterized in that: The invention comprises a seat body (100) and a bolt (200) for connecting with a cable, wherein the seat body (100) is connected with a contact (300), the contact (300) is provided with a connecting hole (301), the contact (300) is connected with a limiting plate (400), the limiting plate (400) is provided with a clamping hole (401), the inner wall of the clamping hole (401) is connected with an elastic plate (402), the limiting plate (400) is connected with a limiting strip (403), the rod of the bolt (200) passes through the connecting hole (301) and the clamping hole (401) in sequence, the elastic plate (402) is used to limit the rod of the bolt (200), and the limiting strip (403) is used to limit the head of the bolt (200).

2. The connection terminal structure of the fuse base according to claim 1, characterized in that: There are a plurality of elastic sheets (402), and each of the elastic sheets (402) is distributed at equal angles along the circumference of the clamping hole (401); one end of the elastic sheet (402) away from the inner wall of the clamping hole (401) is arranged close to the central axis of the clamping hole (401); one end of each of the elastic sheets (402) away from the inner wall of the clamping hole (401) is spaced to form a limiting hole (404); the diameter of the limiting hole (404) is smaller than the major diameter of the external thread of the bolt (200) and larger than the minor diameter of the external thread of the bolt (200).

3. The connection terminal structure of the fuse base according to claim 2, characterized in that: The bolt (200) is sleeved with a flat washer (201), the bolt (200) is threadedly connected with a nut (203), and the flat washer (201) is located between the nut (203) and the limiting plate (400).

4. The connection terminal structure of the fuse base according to claim 3, characterized in that: The bolt (200) is sleeved with a spring washer (202), and the spring washer (202) is located between the flat washer (201) and the nut (203).

5. The connection terminal structure of the fuse base according to claim 1, characterized in that: The contact (300) comprises a connecting portion (302) and a clamping portion (303); the connecting hole (301) is provided in the connecting portion (302); the clamping portion (303) is provided with a clamping hole (304); the clamping portion (303) is provided with an elastic clip (500); the top of the elastic clip (500) is clamped at both ends of the clamping portion (303) along the width direction of the clamping hole (304).

6. The connection terminal structure of the fuse base according to claim 5, characterized in that: The connecting portion (302) is provided with a plug-in slot (305), and the bottom of the elastic clip (500) is plugged into the connecting portion (302) through the plug-in slot (305). The connecting portion (302) is provided with a screw (600), and one end of the screw (600) passes through the connecting portion (302) and is threadedly connected to the seat body (100), and the head of the screw (600) limits the elastic clip (500).

7. The connection terminal structure of the fuse base according to claim 5, characterized in that: The clamping portion (303) is provided with a limiting groove (306), and the top of the elastic clip (500) is plugged into the clamping portion (303) via the limiting groove (306).

8. The connection terminal structure of the fuse base according to claim 1, characterized in that: The seat body (100) is plugged with a cover body (700), and the cover body (700) is arranged to cover the contact (300) and the bolt (200).

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