A conveniently installed shunt terminal block and assembly method thereof

Abstract

The present invention relates to a shunt terminal block that is easy to install, including a base, a lower cover and a lower wiring terminal group that are compatible with the base. A mounting groove is provided on one side of the base corresponding to the lower cover, a mounting portion is provided in the mounting groove, a plurality of wiring cavities are provided on the mounting portion, and an active cavity is formed between the mounting portion and the inner wall of the mounting groove. The lower wiring terminal group includes a long shunt terminal piece and a wiring terminal piece. The mounting groove is provided with a notch. The long shunt terminal piece includes a long connecting portion and a shunt wiring portion. A first limiting portion for preventing the shunt wiring portion from being separated is provided on both sides of the wiring cavity. A plug-in space is provided between the first limiting portion and the bottom wall of the active cavity. The mounting groove is provided with upper and lower openings corresponding to the position of the wiring cavity. The first limiting portion is provided with an inclined portion on one side corresponding to the active cavity. The shunt wiring portion is provided with a connecting hole, and a wiring screw is fixed in the connecting hole. By adopting the above technical solution, the structure is simple, the assembly is convenient, the circuit is clear, and it is easy to identify.

Description

Technical Field

[0001] The present invention relates to the technical field of terminal blocks, and more particularly to a conveniently installed shunt terminal block and an assembling method thereof. Background Art

[0002] Terminal blocks are an electrical component used to connect circuits in electrical equipment. The number of terminal blocks in each row is different, and its model can be determined according to the needs of engineering technical parameters. Terminal blocks are a type of connector, and are used to facilitate the connection of wires. They are widely used in the electrical field. In electrical control systems, terminal blocks are one of the indispensable components.

[0003] In the prior art, a shunt is used for current shunting, and its main function is to divide one current into multiple currents. At present, a commonly used shunting method is to use a hole-type connector, crimp a wire for current inflow, and then superimpose and crimp multiple wires for current outflow, thereby achieving one-to-many shunting. However, this shunting method is relatively cumbersome to operate, and the line distribution is messy, more parts are required, more connection structures, more complex structure, and low assembly efficiency. Summary of the invention

[0004] In summary, in order to overcome the deficiencies of the prior art, the present invention provides a shunt terminal block that is easy to install.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a shunt terminal block that is easy to install, comprising a base, a lower cover and a lower wiring terminal group that are compatible with the base, wherein a mounting groove is provided on one side of the base corresponding to the lower cover, a mounting portion is provided in the mounting groove, a plurality of wiring cavities are provided on the mounting portion, and an active cavity is formed between the mounting portion and the inner wall of the mounting groove, the lower wiring terminal group comprises a long shunt terminal piece and a wiring terminal piece, a notch for the wiring terminal piece to extend out is provided on one side of the mounting groove corresponding to the active cavity, and the long shunt terminal piece comprises a A long connecting portion is placed in the active cavity and a shunt wiring portion is respectively arranged in the wiring cavity, and first limiting portions are arranged on both sides of the wiring cavity to prevent the shunt wiring portion from detaching, and an insertion space for inserting the shunt wiring portion is arranged between the first limiting portion and the bottom wall of the active cavity, and the installation groove is arranged with upper and lower openings corresponding to the position of the wiring cavity, and the first limiting portion is provided with an inclined portion on one side corresponding to the active cavity, and the shunt wiring portion is inserted into the wiring cavity through the insertion space so that it extends out of the installation groove, and the shunt wiring portion is provided with a connecting hole, and a connecting screw is fixed in the connecting hole.

[0006] By adopting the above technical scheme, compared with the existing current shunting method, the technical scheme of the present invention connects the current introducing wire to the terminal piece, and the current leading-out wire is connected through the shunt wiring part, which has a simple structure and is convenient for assembly; the installation groove is arranged with upper and lower openings corresponding to the position of the wiring cavity, which is convenient for the lower terminal group to be installed by oblique insertion. Since the shunt wiring part is long, compared with flat insertion, the travel distance of the long shunt terminal piece is greatly shortened, thereby reducing the required width of the active cavity, which helps to reduce the volume of the substrate and reduce materials; the inner wall of the installation groove protects the lower terminal group.

[0007] The present invention is further provided with: a plurality of lower wiring grooves are arranged at positions corresponding to the wiring chambers outside the base, the lower wiring grooves are connected to the corresponding wiring chambers up and down, the shunt wiring part is inserted into the wiring chamber through the plug-in space, one side of the shunt wiring part is abutted against the first limiting part, and the other side is arranged in the lower wiring groove, second limiting parts for limiting the shunt wiring part are arranged on both sides of the lower wiring groove, the second limiting part is arranged on the other side of the lower wiring groove relative to the inclined part, and the shunt wiring part is inserted between the second limiting part and the first limiting part.

[0008] By adopting the above technical scheme, the lower wiring groove plays a protective role on the shunt wiring part, forming a plurality of independent wiring spaces, and the current lead-out wire is connected through the shunt wiring part in the lower wiring groove, and the line is clear and distinct (each lower wiring groove is provided with an identification number) for easy identification; since the upper end surface of the first limiting part is exposed outside the installation groove, the lower wiring groove and the corresponding wiring cavity are connected up and down, and the upper end surface of the first limiting part also becomes the receiving bottom of the lower wiring groove, and the shunt wiring part is inserted between the second limiting part and the first limiting part, which makes the installation more convenient and quick, and at the same time plays a limiting role, thereby improving the stability and firmness of the shunt wiring part, and improving the stability of the conductivity of the shunt wiring part; at the same time, it is convenient to assemble the wiring screws, the current lead-in wires and the shunt wiring part.

[0009] The present invention is further configured as follows: a card slot is provided on the other side of the installation groove relative to the installation portion, an elastic card portion is provided on the side of the lower cover corresponding to the card slot, a sliding groove adapted to the elastic card portion is provided at the position of the installation groove corresponding to the card slot, and a limiting card portion is provided between the sliding groove and the card slot to prevent the elastic card portion from detaching.

[0010] By adopting the above technical solution, the lower cover is inserted into the installation groove, and the elastic card part slides along the sliding groove, so that the elastic card part passes over the limiting card part and engages with the card groove to complete the installation of the lower cover. The setting of the sliding groove shortens the stroke length of the elastic card part under extrusion and extends the life of the elastic card part. At the same time, when the lower cover is installed, there is a gap between the sliding groove and the lower cover, which is convenient for disassembly and assembly of the lower cover.

[0011] The present invention further provides that: the terminal piece includes a first contact portion connected to the long connecting portion, a second contact portion extending outward from the slot, and a connecting portion connecting the first contact portion and the second contact portion, the connecting portion includes a first connecting section connected to the first contact portion and a second connecting section connected to the second contact portion, the first connecting section and the second connecting section are arranged in an inverted L shape, and abutment portions protruding toward the bottom wall of the active cavity are provided on both sides of the first connecting section.

[0012] By adopting the above technical solution, the connecting portion is bent so as to be close to the mounting groove, thereby enhancing the connection stability of the second contact portion and preventing it from swinging.

[0013] The present invention further provides that: the connection between the long connecting portion and the shunt wiring portion is rounded.

[0014] By adopting the above technical solution, the rounded corners are set at the connection to enhance the strength of the long shunt terminal piece, making it less likely to break.

[0015] A method for assembling a shunt terminal row that is easy to install, comprising the following steps: S1: fixing a terminal piece to a long shunt terminal piece; S2: aligning the shunt wiring part with the wiring cavity along the inclination direction of the inclined part, obliquely inserting the lower wiring terminal group, and then pressing it down to be parallel to the installation groove; S3: pushing the long connection part toward the plug-in space along the bottom wall of the active cavity until the long connection part abuts against the outer wall of the installation part, at which time the shunt wiring part is clamped between the second limiting part and the first limiting part and the shunt wiring part is arranged in the lower wiring groove; S4: inserting the lower cover into the installation groove, and the elastic clamping part slides along the sliding groove, so that the elastic clamping part passes over the limiting clamping part and is clamped with the clamping groove to complete the installation of the lower cover; S5: the wiring screw passes through the gasket and is screwed into the wiring hole.

[0016] By adopting the above technical solution, the assembly method is simple, convenient, precise, efficient and stable. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 The three-dimensional embodiment of the present invention Figure 1 .

[0018] Figure 2 It is a partial exploded view of an embodiment of the present invention.

[0019] Figure 3 for Figure 2 Enlarged view of part A.

[0020] Figure 4 for Figure 2 Enlarged view of part B.

[0021] Figure 5 It is a three-dimensional diagram of the internal structure of an embodiment of the present invention.

[0022] Figure 6 It is a cross-sectional view of an embodiment of the present invention.

[0023] Figure 7 The three-dimensional base of the embodiment of the present invention Figure 1 .

[0024] Figure 8 The three-dimensional embodiment of the present invention Figure 2 .

[0025] Fig. 9 The three-dimensional base of the embodiment of the present invention Figure 2 .

[0026] Meaning of the numbers in the figure: 1. base, 11. installation groove, 111. notch, 112. card slot, 113. sliding slot, 114. limit card portion, 12. installation portion, 121. wiring cavity, 122. movable cavity, 123. first limit portion, 1231. inclined portion, 13. plug-in space, 14. spacer, 15. upper wiring groove, 151. limit convex portion, 152. installation boss, 1521. installation hole, 16. installation recess, 161. limit block, 162. accommodating recess, 17. installation space, 171. receiving convex portion, 18. card block, 19. lower wiring groove, 191. second limit portion, 2. upper cover, 21. card portion, 3. upper terminal group, 4. Lower terminal group, 41. Long shunt terminal piece, 411. Long connecting part, 412. Shunt wiring part, 4121. Connecting hole, 4122. Opening groove, 42. Terminal piece, 421. First contact part, 422. Second contact part, 4221. Limiting part, 423. Connecting part, 4231. First connecting section, 4232. Second connecting section, 4233. Abutting part, 5. Lower cover, 51. Elastic clamping part, 6. Connecting screws. DETAILED DESCRIPTION

[0027] The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0028] This specific embodiment is merely an explanation of the present invention and is not a limitation of the present invention. After reading this specification, those skilled in the art may make non-creative modifications to the present embodiment as needed. However, as long as they are within the scope of the claims of the present invention, they are protected by the patent law.

[0029] Reference Figure 1-9A shunt terminal block that is easy to install includes a base 1, an upper cover 2 matched with the base 1, an upper terminal group 3, a lower cover 5 matched with the base 1, and a lower terminal group 4, wherein a mounting groove 11 is provided on one side of the base 1 corresponding to the lower cover 5, a mounting portion 12 is provided in the mounting groove 11, a plurality of wiring cavities 121 are provided on the mounting portion 12, and an active cavity 122 is formed between the mounting portion 12 and the inner wall of the mounting groove 11, the lower terminal group 4 includes a long shunt terminal piece 41 and a terminal piece 42, a notch 111 for the terminal piece 42 to extend out is provided on one side of the mounting groove 11 corresponding to the active cavity 122, and the long shunt terminal piece 41 includes The long connection part 411 is arranged in the active cavity 122 and the shunt wiring part 412 is respectively arranged in the wiring cavity 121. The first limiting part 123 for preventing the shunt wiring part 412 from being separated is arranged on both sides of the wiring cavity 121. The plug-in space 13 for inserting the shunt wiring part 412 is arranged between the first limiting part 123 and the bottom wall of the active cavity 122. The installation groove 11 is provided with upper and lower openings corresponding to the position of the wiring cavity 121. The first limiting part 123 is provided with an inclined part 1231 on one side corresponding to the active cavity 122. The shunt wiring part 412 is inserted into the wiring cavity 121 through the plug-in space 13 so that it extends out of the installation groove 11. The length direction of the base 1 A spacer block 14 is provided on the upper portion, and the base 1 is divided into a plurality of upper wiring grooves 15 by the spacer block 14. One or more mounting recesses 16 are provided on the other side of the base 1 relative to the spacer block 14, and a mounting space 17 is provided between the mounting recess 16 and the spacer block 14. The upper wiring terminal group 3 includes a long shunt terminal piece 41 and one or more wiring terminal pieces 42. The long shunt terminal piece 41 includes a long connecting portion 411 provided in the mounting space 17 and shunt wiring portions 412 respectively provided in the upper wiring grooves 15. The length of the long connecting portion 411 is greater than the maximum spacing between the shunt wiring portions 412. The wiring terminal pieces 42 are respectively provided in the corresponding mounting recesses 16. The terminal piece 42 includes a first contact portion 421 for connecting to the long connecting portion 411, a second contact portion 422 extending outward from the mounting recess 16, and a connecting portion 423 connecting the first contact portion 421 and the second contact portion 422, wherein one end of the connecting portion 423 is connected to the first contact portion 421, and the other end is bent downward to be connected to the second contact portion 422, and limiting protrusions 151 are provided on both sides of the upper wiring groove 15 to prevent the shunt wiring portion 412 from detaching, and an insertion space 13 for inserting the shunt wiring portion 412 is provided below the limiting protrusion 151, and the shunt wiring portion 412 is provided with a connecting hole 4121, and a wiring screw 6 is fixed in the connecting hole 4121.

[0030] This embodiment is further configured as follows: a plurality of lower wiring grooves 19 are provided at positions corresponding to the wiring chamber 121 outside the base 1, and the lower wiring grooves 19 are connected to the corresponding wiring chamber 121 in upper and lower directions. The shunt wiring portion 412 is inserted into the wiring chamber 121 through the plug-in space 13, and one side of the shunt wiring portion 412 is abutted against the first limiting portion 123, and the other side is arranged in the lower wiring groove 19. Second limiting portions 191 for limiting the shunt wiring portion 412 are provided on both sides of the lower wiring groove 19, and the second limiting portion 191 is arranged on the other side of the lower wiring groove 19 relative to the inclined portion 1231, and the shunt wiring portion 412 is inserted between the second limiting portion 191 and the first limiting portion 123.

[0031] This embodiment is further configured as follows: a lower wiring groove 19 is arranged in the spacer block 14, the upper wiring grooves 15 are arranged at the same height, and the lower wiring grooves 19 are arranged at the same height. The lower wiring grooves 19 and the upper wiring grooves 15 are staggered along the length direction of the base 1, and there is a height difference between the upper wiring grooves 15 and the lower wiring grooves 19.

[0032] This embodiment is further configured as follows: a card slot 112 is provided on the other side of the installation groove 11 opposite to the installation portion 12, an elastic card portion 5121 is provided on the side of the lower cover 5 corresponding to the card slot 112, a sliding groove 113 adapted to the elastic card portion 5121 is provided at the position of the installation groove 11 corresponding to the card slot 112, and a limiting card portion 114 is provided between the sliding groove 113 and the card slot 112 for preventing the elastic card portion 5121 from detaching.

[0033] This embodiment further provides: the terminal piece 42 includes a first contact portion 421 for connecting to the long connecting portion 411, a second contact portion 422 extending outward from the notch 111, and a connecting portion 423 connecting the first contact portion 421 and the second contact portion 422, the connecting portion 423 includes a first connecting segment 4231 connected to the first contact portion 421 and a second connecting segment 4232 connected to the second contact portion 422, the first connecting segment 4231 and the second connecting segment 4232 are arranged in an inverted L shape, and there are protruding abutting portions 4233 on both sides of the first connecting segment 4231.

[0034] This embodiment further configures: the first connecting section 4231 and the first contact portion 421 are connected in an L-shape.

[0035] In the technical solution of the present invention, compared with the aligned arrangement of the shunt wiring portion 412 and the second contact portion 422, the first connecting section 4231 and the first contact portion 421 are connected in an L-shape, and the terminal piece 42 of the upper terminal group 3 and the terminal piece 42 of the lower terminal group 4 are offset and avoided, so that the distance between the second contact portions 422 of the two is widened to avoid the neutral wire and the live wire being too close to cause a short circuit; when the long shunt terminal piece 41 and the terminal piece 42 are riveted, the abutment portion 4233 can prevent the two from rotating relative to each other, further enhancing the stability of the connection.

[0036] The present embodiment is further configured as follows: a mounting boss 152 for receiving the shunt wiring portion 412 is provided in the upper wiring groove 15, and the mounting boss 152 is provided with a mounting hole 1521 adapted to the connecting hole 4121; the plug-in space 13 is provided between the limiting convex portion 151 and the mounting boss 152; a plurality of receiving convex portions 171 for receiving the long connecting portion 411 are provided at intervals on the mounting space 17, and the receiving convex portions 171 and the mounting boss 152 are connected to each other. Set at the same height; open grooves 4122 adapted to the limiting protrusions 151 are set on both sides of the shunt wiring part 412, and the spacing between the open groove 4122 and the long connecting part 411 is greater than or equal to the width of the limiting protrusion 151, and two limiting protrusions 151 are set on one side of the upper wiring groove 15, and the spacing between the other end of the shunt wiring part 412 relative to the long connecting part 411 and the open groove 4122 is smaller than the spacing between the two limiting protrusions 151 on the same side.

[0037] This embodiment is further configured as follows: the mounting recess 16 is opened relative to the other end of the long shunt terminal piece 41, and limiting blocks 161 for limiting the second contact portion 422 are provided on both sides of the mounting recess 16; a second limiting portion 191 is provided at one end of the second contact portion 422 corresponding to the connecting portion 423, and a width of the second limiting portion 191 is smaller than the width of the mounting recess 16 and larger than the spacing between the limiting blocks 161 on both sides; a width of the second connecting segment 4232 is smaller than the spacing between the limiting blocks 161 on both sides; and an accommodating recess 162 for accommodating the second connecting segment 4232 is provided on the inner wall of the other end of the mounting recess 16 relative to the opening.

[0038] This embodiment further provides that: the connection between the long connecting portion 411 and the shunt wiring portion 412 is rounded.

[0039] In the technical solution of the present invention, the connection method between the long shunt terminal piece 41 and the wiring terminal piece 42 can be riveting, welding, clamping, snap-fitting, threaded connection, etc., preferably riveting. Riveting holes are respectively provided on the long connecting part 411 and the first contact part 421, and the two are riveted together by rivets, which is convenient to assemble and has high stability.

[0040] A method for assembling a shunt terminal row that is easy to install, comprising the following steps: S1: assembling an upper terminal group 3 (fixingly connecting one or more terminal pieces 42 to a long shunt terminal piece 41) and a lower terminal group 4 (fixingly connecting the terminal piece 42 to the long shunt terminal piece 41); S2: aligning the shunt wiring portion 412 with the wiring cavity 121 along the inclined direction of the inclined portion 1231, obliquely inserting the lower terminal group 4, and then pressing it down to be parallel to the mounting groove 11; S3: pushing the long connecting portion 411 toward the plug-in space 13 along the bottom wall of the active cavity 122 until the long connecting portion 411 abuts against the outer wall of the mounting portion 12, at which time the shunt wiring portion 412 is clamped between the second limiting portion 191 and the first limiting portion 123 and the shunt wiring portion 412 is arranged in the lower wiring groove 19; S4: inserting the lower cover 5 into the mounting groove 11, and the elastic clamping portion 5121 slides along the sliding groove 113 , so that the elastic clamping part 5121 passes over the limiting clamping part 114 and is clamped with the clamping groove 112 to complete the installation of the lower cover 5; S5: align the shunt wiring part 412 with the upper wiring groove 15, and insert the upper wiring terminal group 3 downward by aligning the opening grooves 4122 on both sides with the first limiting parts 123 on both sides; S6: push the long connection part 411 toward the insertion space 13 along the receiving protrusion 171 until the long connection part 411 abuts against the outer wall of the spacer 14, at this time, the shunt wiring part 412 is aligned with the upper wiring groove 15, and the upper wiring terminal group 3 is inserted downward; S6: push the long connection part 411 toward the insertion space 13 along the receiving protrusion 171 until the long connection part 411 abuts against the outer wall of the spacer 14, The flow connection part 412 is clamped between the bottom of the first limiting part 123 and the top of the mounting boss 152, and the opening groove 4122 is staggered with the first limiting part 123, and the terminal piece 42 moves into the mounting groove 11 along with the long connecting part 411; S7: insert the upper cover 2 from the opening direction, and clamp it with the base 1 through the cooperation of the clamping part 21 and the clamping block 18 until the upper cover 2 blocks the mounting space 17; S8: the wiring screw 6 passes through the gasket and is screwed into the wiring hole.

[0041] This embodiment further provides that: the order of steps S2-S4 and steps S5-S7 can be reversed.

[0042] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications of the above assumptions should also be regarded as the scope of protection of the present invention.

Claims

1. A shunt terminal block that is easy to install, characterized in that: It includes a base and a lower cover and a lower terminal group matched with the base. A mounting groove is provided on one side of the base corresponding to the lower cover, a mounting portion is provided in the mounting groove, a plurality of wiring cavities are provided on the mounting portion, and an active cavity is formed between the mounting portion and the inner wall of the mounting groove. The lower terminal group includes a long shunt terminal piece and a wiring terminal piece. A notch for the wiring terminal piece to extend out is provided on one side of the mounting groove corresponding to the active cavity. The long shunt terminal piece includes a long connecting portion provided in the active cavity and shunt wiring portions respectively provided in the wiring cavity. First limiting portions for preventing the shunt wiring portion from detaching are provided on both sides of the wiring cavity. An insertion space for inserting the shunt wiring portion is provided between the first limiting portion and the bottom wall of the active cavity. The mounting groove is provided with upper and lower openings corresponding to the position of the wiring cavity. An inclined portion is provided on one side of the first limiting portion corresponding to the active cavity. The shunt wiring portion is inserted into the wiring cavity through the insertion space so that it extends out of the mounting groove. A connecting hole is provided in the shunt wiring portion, and a wiring screw is fixed in the connecting hole.

2. A shunt terminal block that is easy to install according to claim 1, characterized in that: A plurality of lower wiring grooves are arranged at positions corresponding to the wiring cavities outside the base, and the lower wiring grooves are connected to the corresponding wiring cavities in upper and lower directions. The shunt wiring part is inserted into the wiring cavity through the plug-in space, and one side of the shunt wiring part is abutted against the first limiting part, and the other side is arranged in the lower wiring groove. Second limiting parts for limiting the shunt wiring part are arranged on both sides of the lower wiring groove, and the second limiting part is arranged on the other side of the lower wiring groove relative to the inclined part, and the shunt wiring part is inserted between the second limiting part and the first limiting part.

3. The shunt terminal block that is easy to install according to claim 1 is characterized in that: A card slot is provided on the other side of the mounting groove relative to the mounting portion, an elastic card portion is provided on one side of the lower cover corresponding to the card slot, a sliding groove adapted to the elastic card portion is provided at the position of the mounting groove corresponding to the card slot, and a limiting card portion is provided between the sliding groove and the card slot to prevent the elastic card portion from detaching.

4. The shunt terminal block that is easy to install according to claim 1, characterized in that: The terminal piece includes a first contact portion connected to the long connecting portion, a second contact portion extending outward from the slot, and a connecting portion connecting the first contact portion and the second contact portion, the connecting portion includes a first connecting section connected to the first contact portion and a second connecting section connected to the second contact portion, the first connecting section and the second connecting section are arranged in an inverted L shape, and abutment portions protruding toward the bottom wall of the active cavity are provided on both sides of the first connecting section.

5. A shunt terminal block that is easy to install according to claim 1, characterized in that: The connection between the long connection part and the shunt connection part is rounded.

6. A method for assembling a shunt terminal block that is easy to install, characterized in that: The following steps are involved: S1: Fix the terminal piece and the long shunt terminal piece together; S2: Align the shunt wiring part with the wiring cavity along the inclination direction of the inclined part, insert the lower wiring terminal group obliquely, and then press it down until it is parallel to the installation groove; S3: Push the long connection part toward the plug-in space along the bottom wall of the movable cavity until the long connection part abuts against the outer wall of the installation part. At this time, the shunt wiring part is clamped between the second limiting part and the first limiting part and the shunt wiring part is arranged in the lower wiring groove; S4: Insert the lower cover into the installation groove, and the elastic clamping part slides along the sliding groove so that the elastic clamping part passes over the limiting clamping part and is clamped with the clamping groove to complete the installation of the lower cover; S5: The wiring screw passes through the gasket and is screwed into the wiring hole.

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