An error-proofing positioning pin device for electric meter terminal block

Abstract

The utility model discloses an ammeter wiring terminal row mistake insertion positioning pin device relates to ammeter wiring terminal technical field, the utility model discloses a base plate is provided with two groups of female terminal at the top of base plate, and the inside of two groups female terminal all is inserted with the insertion part, and the top of two groups insertion part all is provided with male terminal, and the front end of two groups male terminal all is seted up and has the wiring slot, and the top of two groups male terminal all is provided with the tight wire screw hole, and the side of two groups male terminal all is provided with quick clamping mechanism, and the top of female terminal is provided with the slow -motion mechanism. The utility model discloses setting up quick clamping mechanism to reach when male terminal bottom insertion part is inserted into female terminal, and the cooperation of limiting post and limiting groove can prevent wrong insertion, and at the same time, the cooperation of arc block, recess, clamping groove and other components makes the insertion part firmly inserted in the female terminal and cannot be separated, so as to prevent loosening in use.

Description

Technical Field

[0001] This utility model belongs to the technical field of electricity meter wiring terminals, and in particular relates to a device for anti-misinsertion positioning pins for electricity meter wiring terminals. Background Technology

[0002] Terminals are electrical connections used to transmit electrical signals or conduct electricity, commonly found in the connection of batteries, wires, and equipment. They can be classified by structure into single-hole, double-hole, socket, and hook types, and are made of materials including copper, aluminum, iron, and their alloy plating (such as silver-plated copper and zinc-plated copper). Their core function is to achieve circuit connection, ensuring stability through screw fixing, welding, or crimping processes. They are widely used in home appliances, automobiles, power equipment, and new energy fields.

[0003] The utility model disclosed in CN203071328U is a mis-plugging type terminal block assembly, which includes at least two sets of terminals. Each set of terminals consists of a fixed female terminal and a movable male terminal. The side of the male terminal has at least one arc-shaped surface, and the female terminal has an arc-shaped groove wall corresponding to the arc-shaped surface.

[0004] The aforementioned application documents prevent incorrect insertion by allowing the female terminal to be inserted only when the male terminal is aligned with the arc-shaped surface and the arc-shaped groove wall. However, the male terminal is prone to loosening after being inserted into the female terminal, which is detrimental to the circuit connection and therefore needs improvement. Utility Model Content

[0005] The purpose of this utility model is to provide a positioning pin device for preventing incorrect insertion of electricity meter terminal blocks, which solves the existing problems.

[0006] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution: This utility model relates to a positioning pin device for preventing incorrect insertion of electrical meter terminal blocks, comprising a base plate. Two sets of female terminals are provided on the top of the base plate. Each set of female terminals has an insertion part inserted inside. A male terminal is provided on the top of each insertion part. A wiring groove is provided at the front end of each set of male terminals. A tightening screw hole is provided on the top of each set of male terminals. A quick-connect mechanism is provided on the side of each set of male terminals. A slowing mechanism is provided on the top of the female terminals. The quick-connect mechanism includes a groove, a slot, and a compression spring. The groove is located on the side of the insertion part, and a telescopic spring is provided inside the groove. An arc-shaped block is slidably connected inside the groove via the telescopic spring. The slot is located on the inner wall of the female terminal, and a pressing plate is slidably connected inside the slot. A pressure rod is fixedly connected to the side of the pressing plate. The compression spring is located on the top of the female terminal.

[0007] Furthermore, limiting posts are provided on the inner walls of the two sets of female terminals, and limiting grooves are provided on the inner walls of the two sets of insertion parts. The positions of the limiting posts and limiting grooves are used to prevent the two sets of male terminals from being mis-inserted into the two sets of female terminals.

[0008] Furthermore, the longitudinal width of the groove is equal to the longitudinal width of the slot, and the end of the arc-shaped block away from the telescopic spring is initially located in the slot. The arc-shaped block is stuck in the slot, preventing the insertion part from leaving the female terminal.

[0009] Furthermore, the arc surface of the arc block faces the bottom of the insertion part, the lateral width of the slot is greater than the lateral width of the groove, the arc surface of the arc block will retract into the groove when it is squeezed, and the lateral width of the extrusion plate is too large to enter the groove.

[0010] Furthermore, the end of the compression spring furthest from the female terminal abuts against the bottom of the male terminal, and the compression spring is initially in a compressed state.

[0011] Furthermore, the deceleration mechanism includes a bracket, which is fixedly connected to the top of the female terminal. A roller is rotatably connected to the inner side of the bracket. An opening groove is formed on the surface of the roller. A spring is provided inside the opening groove. A resistance plate is elastically connected inside the opening groove through the spring.

[0012] Furthermore, in the initial state, the roller is in contact with the side of the insertion part, and the end of the resistance plate away from the elastic spring is uneven. When the insertion part moves up and down, the roller will rotate through friction.

[0013] This utility model has the following beneficial effects: This utility model features a quick-connect mechanism, which ensures that when the bottom insertion part of the male terminal is inserted into the female terminal, the limiting post and limiting groove cooperate to prevent misinsertion. At the same time, the combination of components such as the arc block, groove, and slot ensures that the insertion part is firmly inserted into the female terminal and cannot be separated, thereby preventing loosening during use.

[0014] This invention incorporates a slowing mechanism, which, during the process of the compression spring rebounding and causing the insertion part to move upward away from the female terminal, also slows down the upward movement of the insertion part through the cooperation of components such as the bracket, roller, and resistance plate, preventing the insertion part from rapidly springing up and causing damage to the overall device.

[0015] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a three-dimensional schematic diagram of the overall structure of this utility model; Figure 2 This is a three-dimensional sectional view of the overall structure of this utility model; Figure 3 This is a three-dimensional schematic diagram of the quick-connect mechanism of this utility model; Figure 4 This is a three-dimensional sectional view of the quick-connect mechanism structure of this utility model; Figure 5 This is a three-dimensional sectional view of the deceleration mechanism structure of this utility model.

[0018] The attached diagram lists the components represented by each number as follows: 1. Base plate; 2. Female terminal; 3. Limiting post; 4. Male terminal; 5. Insertion part; 6. Limiting groove; 7. Wiring groove; 8. Tightening screw hole; 9. Quick-connect mechanism; 91. Groove; 92. Telescopic spring; 93. Arc block; 94. Slot; 95. Pressing plate; 96. Pressure rod; 97. Compression spring; 10. Deceleration mechanism; 101. Bracket; 102. Roller; 103. Opening groove; 104. Elastic spring; 105. Resistance plate. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0020] Please see Figures 1-5This utility model is a positioning pin device for preventing incorrect insertion of electrical meter terminal blocks. It includes a base plate 1. The top of the base plate 1 is provided with two sets of female terminals 2. Each set of female terminals 2 has an insertion part 5 inserted inside. The top of each set of insertion parts 5 is provided with a male terminal 4. The front end of each set of male terminals 4 is provided with a wiring groove 7. The top of each set of male terminals 4 is provided with a tightening screw hole 8. The sides of each set of male terminals 4 are provided with a quick-connect mechanism 9. The top of the female terminal 2 is provided with a slowing mechanism 10. The quick-connect mechanism 9 includes a groove 91, a slot 94 and a compression spring 97. The groove 91 is opened on the side of the insertion part 5. The inside of the groove 91 is provided with a telescopic spring 92. The inside of the groove 91 is slidably connected to an arc-shaped block 93 through the telescopic spring 92. The slot 94 is opened on the inner side wall of the female terminal 2. The inside of the slot 94 is slidably connected to a pressing plate 95. The side of the pressing plate 95 is fixedly connected to a pressure rod 96. The compression spring 97 is provided on the top of the female terminal 2.

[0021] As shown in the figure, limit posts 3 are provided on the inner walls of the two sets of female terminals 2, and limit grooves 6 are provided on the inner walls of the two sets of insertion parts 5. The positions of the limit posts 3 and the limit grooves 6 are used to prevent the two sets of male terminals 4 from being mis-inserted into the two sets of female terminals 2.

[0022] As shown in the figure, the longitudinal width of the groove 91 is equal to the longitudinal width of the slot 94, and the end of the arc-shaped block 93 away from the telescopic spring 92 is initially located in the slot 94. The arc-shaped block 93 is stuck in the slot 94, so that the insertion part 5 cannot leave the female terminal 2.

[0023] As shown in the figure, the arc surface of the arc block 93 faces the bottom of the insertion part 5. The width of the slot 94 in the lateral direction is greater than the width of the groove 91 in the lateral direction. When the arc surface of the arc block 93 is squeezed, it will retract into the groove 91. The compression plate 95 has a large lateral width and cannot enter the groove 91.

[0024] As shown in the figure, the end of the compression spring 97 away from the female terminal 2 is in contact with the bottom of the male terminal 4, and the compression spring 97 is initially in a compressed state.

[0025] As shown in the figure, the deceleration mechanism 10 includes a bracket 101, which is fixedly connected to the top of the female terminal 2. A roller 102 is rotatably connected to the inner side of the bracket 101. An opening groove 103 is opened on the surface of the roller 102. A spring 104 is provided inside the opening groove 103. A resistance plate 105 is elastically connected inside the opening groove 103 through the spring 104.

[0026] As shown in the figure, the roller 102 initially contacts the side of the insertion part 5, and the end of the resistance plate 105 away from the elastic spring 104 is uneven. When the insertion part 5 moves up and down, it will drive the roller 102 to rotate through friction.

[0027] A specific application of this embodiment is as follows: When installing the male terminal 4, the corresponding female terminal 2 is selected by the position of its inner limiting groove 6. The bottom insertion part 5 of the male terminal 4 is inserted into the female terminal 2. The compression spring 97 is compressed, and the arc-shaped block 93 initially retracts into the groove 91 due to the pressure on its arc surface. The telescopic spring 92 is compressed. When the insertion part 5 continues to move downward so that the groove 91 coincides with the slot 94, the telescopic spring 92 rebounds and drives the arc-shaped block 93 into the slot 94. At this time, the insertion part 5 is firmly inserted into the female terminal 2 and cannot be separated, thus preventing loosening during use. When it is necessary to remove the male terminal 4, the pressure rods 96 on both sides of the female terminal 2 are pressed. The pressure rods 96 move and drive the pressing plate 95 to move. The arc-shaped block 93 is extruded from the slot 94, while the extrusion plate 95, with its large lateral width, cannot enter the groove 91. At this time, the compression spring 97 rebounds, causing the insertion part 5 to bounce upward and separate from the target. During the process of the compression spring 97 rebounding and causing the insertion part 5 to bounce upward, the upward movement of the insertion part 5 will cause the roller 102 to rotate through friction. At this time, the roller 102 rotates at a relatively fast speed. The centrifugal force generated by the rapid rotation of the roller 102 will throw the resistance plate 105 out of the opening slot 103. When the uneven end of the rubber resistance plate 105 contacts the side wall of the insertion part 5, it will generate a large resistance, thereby slowing down the upward movement speed of the insertion part 5 and preventing the rapid bounce of the insertion part 5 from damaging the overall device.

[0028] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0029] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A device for preventing incorrect insertion of terminal blocks in an electricity meter, comprising a base plate (1), characterized in that: The top of the substrate (1) is provided with two sets of female terminals (2), and each of the two sets of female terminals (2) is inserted with an insertion part (5). Each of the two sets of insertion parts (5) is provided with a male terminal (4) at the top. Each of the two sets of male terminals (4) is provided with a wiring groove (7) at the front end. Each of the two sets of male terminals (4) is provided with a wire tightening screw hole (8) at the top. Each of the two sets of male terminals (4) is provided with a quick snap-fit ​​mechanism (9) on the side. The top of the female terminal (2) is provided with a slowing mechanism (10). The quick-connect mechanism (9) includes a groove (91), a slot (94), and a compression spring (97). The groove (91) is located on the side of the insertion part (5). A telescopic spring (92) is provided inside the groove (91). An arc-shaped block (93) is slidably connected inside the groove (91) through the telescopic spring (92). The slot (94) is located on the inner wall of the female terminal (2). A pressing plate (95) is slidably connected inside the slot (94). A pressure rod (96) is fixedly connected to the side of the pressing plate (95). The compression spring (97) is located on the top of the female terminal (2).

2. The anti-misinsertion positioning pin device for meter terminal blocks according to claim 1, characterized in that, Limiting posts (3) are provided on the inner walls of the two sets of female terminals (2), and limiting grooves (6) are provided on the inner walls of the two sets of insertion parts (5).

3. The anti-misinsertion positioning pin device for meter terminal blocks according to claim 2, characterized in that, The longitudinal width of the groove (91) is equal to the longitudinal width of the slot (94), and the end of the arc block (93) away from the telescopic spring (92) is initially located in the slot (94).

4. A meter terminal block anti-misinsertion positioning pin device according to claim 3, characterized in that, The arc surface of the arc block (93) faces the bottom of the insertion part (5), and the width of the slot (94) in the lateral direction is greater than the width of the groove (91) in the lateral direction.

5. A meter terminal block anti-misinsertion positioning pin device according to claim 4, characterized in that, The end of the compression spring (97) away from the female terminal (2) abuts against the bottom of the male terminal (4), and the compression spring (97) is initially in a compressed state.

6. A meter terminal block anti-misinsertion positioning pin device according to claim 5, characterized in that, The slowing mechanism (10) includes a bracket (101), which is fixedly connected to the top of the female terminal (2). A roller (102) is rotatably connected to the inner side of the bracket (101). An opening groove (103) is provided on the surface of the roller (102). A spring spring (104) is provided inside the opening groove (103). A resistance plate (105) is elastically connected inside the opening groove (103) through the spring spring (104).

7. A meter terminal block anti-misinsertion positioning pin device according to claim 6, characterized in that, The roller (102) initially contacts the side of the insertion part (5), and the end of the resistance plate (105) away from the elastic spring (104) is uneven.

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