British standard plug inner frame

Abstract

The British standard plug inner frame comprises a base, an elastic sheet and a pressure cover, the base is provided with a ground wire inserting column, a live wire inserting column and a null wire inserting column, the elastic sheet is pressed and covered on the base, one end of the elastic sheet is respectively connected with the ground wire inserting column, the live wire inserting column and the null wire inserting column, and the other end of the elastic sheet extends out of the rear end of the base and is provided with three side-by-side opening grooves. The pressure cover comprises an elastic piece pressing cover and an open groove pressing cover, the open groove pressing cover is rotationally connected with the elastic piece pressing cover, the elastic piece pressing cover covers the elastic piece and is connected with the base through an elastic piece pressing cover buckle, and the open groove pressing cover covers the open groove and is connected with the base through an open groove pressing cover buckle. The open slot gland is provided with a separating rib which separates the open slot. According to the utility model, the open slot can be effectively and electrically isolated, and the pressure cover can be buckled on the inner frame main body and then is connected with the wire core, so that the plug assembling efficiency and accuracy are improved.

Description

Technical Field

[0001] The utility model relates to a British standard plug, in particular to an inner frame of a British standard plug. Background Art

[0002] British plugs are also called BS plugs, which refer specifically to power plugs that use British standards as reference criteria. British plugs are divided into assembled and injection-molded types. Assembled British plugs are detachable, while injection-molded plugs generally refer to plugs with British plugs that are crimped with wires and then integrated into one. They cannot be disassembled. Common British plugs on the market are plugs that meet the requirements of BS1363. British plugs can be used as supporting electrical appliances and can be used in industrial, residential, commercial and other places. British plugs are designed with fuses inside. When the current is too large, the fuse will automatically burn out and the power supply can be switched immediately. Secondly, the plug frame must meet the 6KV withstand voltage test, and the creepage distance and electrical clearance between the three poles of zero, fire and ground are much greater than the safety standard requirements.

[0003] Most of the non-detachable British plugs currently in the market use springs to lead the terminals of the riveted wires into a row, and then use pressure covers to position the springs to ensure the creepage distance. For example, CN205846292U discloses an ultra-thin British standard plug inner frame, comprising: a base, a spring and a pressure cover; the base is provided with a ground wire plug, a live wire plug, a neutral wire plug and a fuse cavity; the ground wire plug, the live wire plug and the neutral wire plug are respectively connected to the ground terminal, the live wire terminal and the neutral wire terminal located on the base; the fuse cavity is connected to the live wire terminal; the spring is pressed onto the base, one end of which is riveted to the ground terminal, the live wire terminal and the neutral wire terminal respectively, and the other end extends out of the rear end of the base and has three side-by-side open grooves; the pressure cover is placed on the spring and is connected to the base as a whole with a buckle; three empty grooves are chiseled in the middle of the pressure cover, and the back of the pressure cover has two frame-shaped ribs and two long ribs; the frame-shaped ribs are located on the left and right sides of the empty groove, and correspond to the spring riveted to the live wire terminal; the long ribs are located on the side of the empty groove close to the rear end of the base. The pressure cover is placed on the spring sheet. Although the spring sheet is positioned and the creeping distance between the spring sheets is ensured, effectively reducing the thickness of the product, the opening groove at the end of the spring sheet is exposed at the rear end of the pressure cover, and effective electrical isolation is not performed, posing certain safety hazards.

[0004] If the pressure cover covers the opening slot and isolates the opening slot by means of ribs to ensure the creeping distance between the opening slots, then when assembling the plug, the opening slot needs to be connected to the wire core first, and then the pressure cover needs to be connected to the base to complete the plug assembly. If the pressure cover is connected to the base first, and the opening slot is crimped to the wire core, the pressure cover will interfere with the crimping area, affecting the crimping efficiency and easily damaging the ribs at the opening slot. On the other hand, the springs that are not positioned by the pressure cover are prone to loosening and falling off when connecting the wire core, affecting the efficiency of the plug assembly. To this end, how to quickly improve production efficiency and reduce operational difficulty on the basis of ensuring that the product standard performance is met, it is urgent to develop and design a new plug internal frame structure to solve the problems in the production of the existing structure. Utility Model Content

[0005] The purpose of the utility model is to provide an inner frame of a British standard plug, which can not only effectively electrically isolate the open slot, but also can first buckle the pressure cover on the inner frame body and then connect the wire core, so as to improve the efficiency and accuracy of plug assembly.

[0006] In order to achieve the above technical purpose, the technical solution of the utility model is:

[0007] A British standard plug inner frame includes a base, a spring sheet and a pressure cover, the base is provided with a ground wire plug post, a live wire plug post and a neutral wire plug post, the spring sheet pressure cover is on the base, one end of which is respectively connected to the ground wire plug post, the live wire plug post and the neutral wire plug post, and the other end extends out of the rear end of the base and has three side-by-side open grooves (U-shaped or semicircular), the pressure cover includes a spring sheet pressure cover and an open groove pressure cover, the open groove pressure cover is rotatably connected to the spring sheet pressure cover, the open groove pressure cover can be rotated on the open groove pressure cover, the spring sheet pressure cover is placed on the spring sheet and is connected to the base through the spring sheet pressure cover buckle, the open groove pressure cover is placed on the open groove and is connected to the base through the open groove pressure cover buckle, the open groove pressure cover is provided with partition ribs, and the partition ribs separate the three open grooves.

[0008] Preferably, the spring cover is provided with a spring cover buckle, and the base is provided with a spring cover slot, and the number and shape of the spring cover buckle match the spring cover slot.

[0009] Preferably, four spring sheet pressure cover buckles are provided, which are respectively located on both sides of the front end and the rear end of the spring sheet pressure cover.

[0010] Preferably, the open slot cover is provided with an open slot cover buckle, and the base is provided with an open slot cover slot, and the number and shape of the open slot cover buckle match the open slot cover slot.

[0011] Preferably, two opening slot cover buckles are provided, which are respectively located on both sides of the opening slot cover.

[0012] The upper surface of the spring cover is provided with a folding buckle, and after the opening slot cover is folded upward, the folding buckle is engaged with the opening slot cover. A rotating connection portion is provided between the opening slot cover and the spring cover, and after the opening slot cover is folded upward with the rotating connection portion as the axis, the folding buckle clamps the edge of the opening slot cover, so that the opening slot cover and the spring cover are connected as a whole, thereby preventing the opening slot cover from being folded when not necessary.

[0013] The base also has a fuse cavity, and the spring clips include a ground wire spring clip, a first live wire spring clip, a second live wire spring clip and a neutral wire spring clip. One end of the ground wire spring clip is connected to the ground wire plug post, and the other end extends out of the rear end of the base and has a ground wire opening slot. One end of the neutral wire spring clip is connected to the neutral wire plug post, and the other end extends out of the rear end of the base and has a neutral wire opening slot. One end of the first live wire spring clip is connected to the live wire plug post, and the other end is arranged in the fuse cavity and located at one end of the fuse cavity. One end of the second live wire spring clip is arranged in the fuse cavity and located at the other end of the fuse cavity. The other end of the second live wire spring clip extends out of the rear end of the base and has a live wire opening slot.

[0014] The fuse accommodating cavity protrudes from the upper surface of the base, the fuse accommodating cavity is located between the ground wire plug post and the live wire plug post, and the ground wire spring clip, the first live wire spring clip, and the second live wire spring clip are pressed on the fuse accommodating cavity.

[0015] The fuse cavity is composed of a fuse cavity slot and a cavity cover, and the opening of the fuse cavity slot faces the bottom of the base.

[0016] The spring sheet cover is provided with a limiting block, and when the spring sheet cover is placed on the spring sheet, the limiting block is located at one side of the fuse cavity and close to the fuse cavity. The installation position of the spring sheet cover on the base is positioned by the limiting block.

[0017] Beneficial effects of the utility model:

[0018] 1. The pressure cover can be directly fastened to the base, realizing the single-part delivery state, with simple raw material structure and low cost.

[0019] 2. The pressure cover adopts a flip-cover foldable style (which can be subsequently introduced into automated crimping equipment), which can be directly crimped with high production efficiency.

[0020] 3. When connecting the wire cores, the operator can pull the open slot pressure cover out of the buckle and rotate it 180 degrees to prevent the pressure cover from interfering with the crimping of the wire cores and improve the crimping efficiency of the wire cores.

[0021] 4. The spring cover and the open slot cover are designed with buckles, which can be clamped and fixed with the grooves designed on both sides of the base, ensuring that the pressure cover will not be broken and lifted during the injection molding process, resulting in undesirable phenomena such as exposure of the pressure cover, thereby improving the product yield. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The utility model is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0023] Figure 1 This is a schematic diagram of the British standard plug structure.

[0024] Figure 2 This is a schematic diagram of the structure of the British standard plug components.

[0025] Figure 3 This is a schematic diagram of the structure of the wire core connected to the open slot of the British standard plug.

[0026] Figure 4 This is a schematic diagram of the British standard plug pressure cover structure.

[0027] Figure 5 This is a schematic diagram of the British standard plug opening slot cover structure. DETAILED DESCRIPTION

[0028] like Figure 1-5 As shown, a British standard plug inner frame includes a base 1, a spring and a pressure cover, the base 1 is provided with a ground wire plug 5E, a live wire plug 5L, a neutral wire plug 5N and a fuse cavity 41, the main bodies of the ground wire plug 5E, the live wire plug 5L and the neutral wire plug 5N are all located at the bottom of the base 1, the fuse cavity 41 is located between the ground wire plug 5E and the live wire plug 5L, and protrudes from the upper surface of the base 1 (the fuse cavity 41 is higher than the upper surface of the base 1), the fuse cavity 41 is composed of a fuse cavity groove and a cavity cover 42, the fuse cavity groove opening faces the bottom of the base 1, a fuse is arranged in the fuse cavity groove, and the cavity cover 42 limits the fuse in the fuse cavity groove.

[0029] The spring clips include a ground wire spring clip 6E, a first live wire spring clip 61L, a second live wire spring clip 62L and a neutral wire spring clip 6N, which are pressed onto the upper surface of the base 1 , wherein the ground wire spring clip 6E, the first live wire spring clip 61L and the second live wire spring clip 62L are partially pressed onto the upper surface of the fuse cavity 41 .

[0030] One end of the ground wire spring piece 6E is connected to the ground wire plug post 5E, and the other end extends out of the rear end of the base 1 and has a ground wire opening slot 1E; one end of the neutral wire spring piece 6N is connected to the neutral wire plug post 5N, and the other end extends out of the rear end of the base 1 and has a neutral wire opening slot 1N; one end of the first live wire spring piece 61L is connected to the live wire plug post 5L, and the other end extends from the upper surface of the fuse cavity 41 into the fuse cavity 41 and is connected to one end of the fuse; one end of the second live wire spring piece 62L is connected to the live wire plug post 5L, and the other end extends from the upper surface of the fuse cavity 41 into the fuse cavity 41 and is connected to one end of the fuse; The first end of the second live wire spring clip 62L extends from the upper surface of the fuse cavity 41 into the fuse cavity 41 and is connected to the other end of the fuse. The other end of the second live wire spring clip 62L extends out of the rear end of the base 1 and has a live wire opening slot 1L. The fuse is connected between the first live wire spring clip 61L and the second live wire spring clip 62L to achieve electrical conduction between the first live wire spring clip 61L and the second live wire spring clip 62L. The neutral wire opening slot 1N, the live wire opening slot 1L, and the ground wire opening slot 1E extend out of the rear end of the base 1 in sequence.

[0031] The pressure cover includes a spring cover 2 and an open slot cover 21, and the bottom end of the spring cover 2 is provided with a first spring cover buckle 2a, a second spring cover buckle 2b, a third spring cover buckle and a fourth spring cover buckle, and the first spring cover buckle 2a, the second spring cover buckle 2b, the third spring cover buckle and the fourth spring cover buckle are respectively located on both sides of the front end and the rear end of the spring cover 2, wherein the first spring cover buckle 2a and the second spring cover buckle 2b are located on the left side of the spring cover 2, the first spring cover buckle 2a is located at the front end of the left side of the spring cover 2, the second spring cover buckle 2b is located at the rear end of the left side of the spring cover 2, and the third spring cover buckle and the fourth spring cover buckle are located at the spring cover 2, the third spring cover buckle is located at the front end of the right side of the spring cover 2, and the fourth spring cover buckle is located at the rear end of the right side of the spring cover 2. Four spring cover buckle slots are provided on the base 1, and the positions and shapes of the four spring cover buckle slots are respectively matched with the first spring cover buckle 2a, the second spring cover buckle 2b, the third spring cover buckle and the fourth spring cover buckle; the spring cover 2 is pressed on the upper surface of the fuse cavity 41, and the four spring cover buckles are respectively engaged with the corresponding spring cover buckle slots, so that the spring cover 2 and the base 1 are connected as a whole, and the spring cover 2 presses the ground wire spring 6E, the first live wire spring 61L, and the second live wire spring 62L on the upper surface of the fuse cavity 41.

[0032] At the front end of the spring cover 2, the spring cover 2 is sequentially provided with a first limit block 4, a second limit block 5 and a third limit block 6. When the spring cover 2 is pressed on the fuse cavity 41, the first limit block 4, the second limit block 5 and the third limit block 6 are all located on one side of the fuse cavity 41 and close to the fuse cavity 41.

[0033] The open slot cover 21 is rotatably connected with the spring cover 2, and there is a rotatable connection portion between the open slot cover and the spring cover, and the open slot cover 21 can be rotatably connected with the connection portion to be axially rotated and folded upward. The open slot cover 21 and the spring cover 2 are injection molded into an integrated structure, and the thickness of the rotatable connection portion between the open slot cover 21 and the spring cover 2 is significantly thinner than the thickness of the open slot cover 21 and the spring cover 2, so as to realize the open slot cover 21 rotating and folding on the spring cover 2. As another connection method, the rotatable connection portion can be a plurality of sequentially spaced connection blocks, and the plurality of sequentially spaced connection blocks are connected between the open slot cover 21 and the spring cover 2, so that the open slot cover 21 can be rotated and folded upward.

[0034] The bottom of the open slot pressure cover 21 is provided with a first partition rib 9, a second partition rib 10, a third partition rib 11 and a fourth partition rib 12. The first partition rib 9, the second partition rib 10, the third partition rib 11 and the fourth partition rib 12 are arranged side by side in sequence to form three open slot accommodating spaces, wherein the second partition rib 10 and the third partition rib 11 are located between the first partition rib 9 and the fourth partition rib 12, and the three open slot accommodating spaces are used to accommodate the neutral wire opening slot 1N, the live wire opening slot 1L, and the ground wire opening slot 1E respectively; when the open slot pressure cover 21 is clamped on the base 1, the three open slot accommodating spaces realize the mutual isolation of the neutral wire opening slot 1N, the live wire opening slot 1L, and the ground wire opening slot 1E.

[0035] A first opening slot cover buckle 7 is provided at the bottom end of the first partition rib 9, a second opening slot cover buckle 9 is provided at the bottom end of the fourth partition rib 12, and the base 1 is provided with two opening slot cover buckle slots, the shapes and positions of the two opening slot cover buckle slots respectively match the first opening slot cover buckle 7 and the second opening slot cover buckle 9, when the opening slot cover 21 is pressed on the neutral line opening slot 1N, the live line opening slot 1L and the ground line opening slot 1E, the opening slot cover buckles are engaged with the corresponding opening slot cover buckle slots, so that the opening slot cover 21 is connected to the base 1 as a whole.

[0036] The top of the spring cover 2 is provided with a folding buckle 2c. After the opening slot cover 21 is folded upward into place, the folding buckle 2c is clamped on the edge of the opening slot cover 21, so that the opening slot cover 21 is fixedly connected to the top of the spring cover 2.

[0037] When in use, first fold the opening slot pressure cover 21 upwards so that the folded buckle 2c clamps the edge of the opening slot pressure cover 21; then place the spring cover 2 on the fuse cavity 41 and clamp it on the base 1; secondly, crimp the neutral wire core 3N, the live wire core 3L, and the ground wire core 3E of the cable 3 with the neutral wire opening slot 1N, the live wire opening slot 1L, and the ground wire opening slot 1E in sequence; after the wire cores are crimped with the opening slots, fold the opening slot pressure cover 21 so that the opening slot pressure cover 21 is placed on the neutral wire opening slot 1N, the live wire opening slot 1L, and the ground wire opening slot 1E to achieve electrical isolation of the three opening slots.

[0038] The above embodiments do not limit the present invention in any way, and any technical solutions obtained by equivalent replacement or equivalent transformation fall within the protection scope of the present invention.

Claims

1. A British standard plug inner frame, characterized by: It includes a base, a spring sheet and a pressure cover, the base is provided with a ground wire plug, a live wire plug and a neutral wire plug, the spring sheet pressure cover is on the base, one end of the spring sheet pressure cover is respectively connected with the ground wire plug, the live wire plug and the neutral wire plug, the other end extends out of the rear end of the base and has three side-by-side open slots, the pressure cover includes a spring sheet pressure cover and an open slot pressure cover, the open slot pressure cover is rotatably connected to the spring sheet pressure cover, the spring sheet pressure cover is placed on the spring sheet and is connected to the base through the spring sheet pressure cover buckle, the open slot pressure cover is placed on the open slot and is connected to the base through the open slot pressure cover buckle, the open slot pressure cover is provided with partition ribs, and the partition ribs separate the open slots.

2. The British standard plug inner frame according to claim 1, characterized in that: The spring sheet pressure cover is provided with a spring sheet pressure cover buckle, and the base is provided with a spring sheet pressure cover slot. The number and shape of the spring sheet pressure cover buckle match the spring sheet pressure cover slot.

3. The inner frame of a British standard plug according to claim 1, characterized in that: The open slot cover is provided with an open slot cover buckle, and the base is provided with an open slot cover clamping slot, and the number and shape of the open slot cover buckle match the open slot cover clamping slot.

4. The British standard plug inner frame according to claim 1, characterized in that: The upper surface of the spring sheet pressure cover is provided with a folding buckle, and after the opening slot pressure cover is folded upward, the folding buckle is clamped with the opening slot pressure cover.

5. The British standard plug inner frame according to claim 1, characterized in that: The base also has a fuse cavity, and the spring clips include a ground wire spring clip, a first live wire spring clip, a second live wire spring clip and a neutral wire spring clip. One end of the ground wire spring clip is connected to the ground wire plug post, and the other end extends out of the rear end of the base and has a ground wire opening slot. One end of the neutral wire spring clip is connected to the neutral wire plug post, and the other end extends out of the rear end of the base and has a neutral wire opening slot. One end of the first live wire spring clip is connected to the live wire plug post, and the other end is arranged in the fuse cavity and located at one end of the fuse cavity. One end of the second live wire spring clip is arranged in the fuse cavity and located at the other end of the fuse cavity. The other end of the second live wire spring clip extends out of the rear end of the base and has a live wire opening slot.

6. The British standard plug inner frame according to claim 5, characterized in that: The fuse accommodating cavity protrudes from the upper surface of the base, the fuse accommodating cavity is located between the ground wire plug post and the live wire plug post, and the ground wire spring clip, the first live wire spring clip, and the second live wire spring clip are pressed on the fuse accommodating cavity.

7. The British standard plug inner frame according to claim 5, characterized in that: The fuse cavity is composed of a fuse cavity slot and a cavity cover, and the opening of the fuse cavity slot faces the bottom of the base.

8. The British standard plug inner frame according to claim 5, characterized in that: The spring sheet pressure cover is provided with a limiting block. When the spring sheet pressure cover is placed on the spring sheet, the limiting block is located at one side of the fuse cavity and is close to the fuse cavity.

Images