Multi-core electrical wire connector

Abstract

The present invention relates to a multi-core electric wire connector, comprising a terminal box and a contact assembly, wherein the terminal box has a plurality of wire insertion holes, and a stop space connected to the plurality of wire insertion holes is formed inside the terminal box, and the contact assembly is installed in the stop space of the terminal box, comprising a spring steel sheet and a busbar, wherein the spring steel sheet has a lower edge portion and an upper edge portion, and each has a spring sheet extending toward the lower edge portion; the wire insertion hole has an outer end and an inner end located in the stop space, the outer end has a first cross section, and the inner end has a second cross section with an area smaller than the first cross section; the terminal box extends a guide portion aligned with the position of the spring sheet, and the busbar extends a plurality of contact portions aligned with the position of the guide portion at an adjacent end facing the wire insertion hole, the present invention allows the electric wire to concentrate force on the spring sheet during insertion through the wire insertion port, and enables the electric wire to be smoothly inserted through the guide portion and the contact portion, thereby improving the convenience of connector insertion.

Description

Technical Field

[0001] The present invention relates to a multi-core electric wire connector for connecting a plurality of multi-core electric wires to each other after the insulating materials are stripped off, especially a multi-core electric wire connector in which the wire insertion hole has a guide part extending to the busbar and the busbar also has a contact part extending from the corresponding guide part. Background Art

[0002] Common electrical wire connectors are mainly used to connect the ends of electrical wires between distribution boards or the like, or between electrical items or accessories and power sources, and can form one or more circuit loops to achieve a one-to-one, one-to-many or many-to-many electrical connection. They can be divided into temporary connections or permanent connections. Usually, portable miniature connectors are used for temporary connections and can be removed.

[0003] The main features of designing and manufacturing an electrical conductor connector are nothing more than the following: output distribution configuration, size, impedance, insulation between each single output, durability, vibration resistance (to avoid easy loosening and falling) and shaking, waterproof or anti-fouling, pressure resistance, service life, and whether it is easy to connect or remove.

[0004] At the same time, the connector can also be regarded as a foolproof mechanism, a locking mechanism that ensures that the end of the wire is completely inserted into the connector, and can replace the connector or replace the wire in the case of hot insertion. As a foolproof mechanism, it can avoid indirect wire damage caused by incorrect mechanical connection, avoid squeezing into the wrong output configuration position, and avoid incorrect insertion angles.

[0005] When a multi-core electric wire is used for insertion, the conductors of the multi-core electric wire may be bifurcated during the insertion, resulting in the conductors of the multi-core electric wire being not sufficiently concentrated, causing them to become loose and shortening their service life. Summary of the invention

[0006] In order to solve the above technical problems, the purpose of the present invention is to increase the stability of the clamping mechanism in centrally clamping multi-core electrical conductors through the structure and position of the terminal box and the contact assembly assembled with each other.

[0007] The secondary purpose of the present invention is to design a special structure between the clamping mechanism and the contact assembly, and to promote the clamping mechanism to deform smoothly when the multi-core electric wire is inserted, thereby achieving the purpose of centrally clamping the multi-core electric wire.

[0008] To achieve the above object, the technical solution adopted by the present invention is:

[0009] A multi-core electric wire connector allows a plurality of electric wires to be inserted and connected to each other, comprising:

[0010] A terminal box is constructed with a plurality of wire insertion holes along a wire insertion direction, and a stop space is formed inside thereof, which is connected to the plurality of wire insertion holes, so that the plurality of electrical wires with the insulation material removed can be respectively inserted into the stop space along the plurality of wire insertion holes;

[0011] A contact assembly is installed in the stop space of the terminal junction box, and is constructed with a plurality of terminal contacts arranged in a row and adjacent to each other. The contact assembly includes a spring steel sheet and a busbar that forms all the terminal contacts. The spring steel sheet has a lower edge connected to the busbar and an upper edge that forms a plurality of windows. The plurality of windows are aligned one-to-one with the positions of the plurality of wire insertion holes, and each has a spring sheet extending toward the lower edge.

[0012] The multi-core electrical wire connector, the wire insertion hole has an outer end and an inner end located in the stop space, the outer end has a first cross-section, and the inner end has a second cross-section with an area smaller than the first cross-section, so that the electrical wire can concentrate force on the spring sheet during the insertion process; the wire insertion hole gradually reduces the through hole area, so that when inserting the electrical wire, it is convenient to concentrate and apply force on the spring sheet after insertion, so that the spring sheet is pushed to perform a clamping action.

[0013] In the multi-core electric wire connector, the terminal box extends a guide portion aligned with the position of the spring sheet at a bottom position adjacent to the inner end of the plurality of wire insertion holes, and the busbar extends a plurality of contact portions aligned with the position of the guide portion at an adjacent end facing the wire insertion holes. The guide portion is utilized to correctly guide the concentrated multi-core electric wires to the corresponding busbar, and the busbar also smoothly and securely clamps the electric wires with the spring sheet through the contact portion.

[0014] The multi-core electric wire connector is inserted into the multi-core electric wire connector according to a wire insertion direction, and will sequentially contact the wire insertion hole, the spring sheet, the guide portion and the contact portion, and then the spring sheet and the contact portion will jointly clamp the electric wire.

[0015] In the multi-core electrical wire connector, the wire insertion hole is sequentially formed with a first section, a second section and a third section according to the wire insertion direction. The first section and the second section are respectively configured as conical cylinders with different tapering slopes, and the third section is configured as a cylindrical cylinder.

[0016] In the multi-core electric wire connector, a guiding space is formed between the guiding part and the wire insertion hole, and an arc recess is formed on the top surface of the guiding part to maintain the moving direction of the electric wire.

[0017] The contact portion of the multi-core electric wire connector is formed with a flat surface parallel to the wire insertion direction and an inclined surface extending from the flat surface, and the bottom position of the inclined surface is lower than the lowest position of the arc cavity.

[0018] In the multi-core electrical wire connector, the spring sheet has a deformation section and a pressing section, the deformation section has a first turning end connected to the upper edge and a second turning end connected to the pressing section, one side of the pressing section is connected to the second turning end, and the other opposite side is constructed with a sharp-angled blade.

[0019] The blade can easily insert the electric wire after stripping the insulating material, and clamp the electric wire to avoid the electric wire from being offset during insertion and preventing the wire from accidentally falling off and breaking when being pulled.

[0020] Compared with the prior art, the advantage of the present invention adopting the technical solution is that: the multi-core electric wire connector of the present invention is characterized in that the terminal box extends the guide parts at the bottom position adjacent to the inner ends of the plurality of wire insertion holes, and the busbar extends a plurality of contact parts aligned with the guide parts at the adjacent ends facing the wire insertion holes. The wire insertion holes and the busbar each have corresponding protrusions as a guide function, so that the electric wire can be inserted and clamped quickly without bifurcation.

[0021] The spring sheet has the deformation section, the pressing section and the blade, so that when clamping the electric wire, the electric wire is stably clamped and accidental pulling or dropping is prevented so as to prevent the electric wire from falling off or breaking. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 An exploded view of the multi-core electrical conductor connector of the present invention;

[0023] Figure 2 It is a schematic diagram of the interior of the multi-core electric wire connector of the present invention;

[0024] Figure 3 is a cross-sectional view of a multi-core electrical conductor connector of the present invention;

[0025] Figure 4 It is a schematic diagram of the appearance of the multi-core electric wire connector of the present invention;

[0026] Figure 5A A schematic diagram of the electric wire of the present invention being inserted into the first area;

[0027] Figure 5B This is a schematic diagram of the electrical conductor of the present invention being inserted into the third area;

[0028] Fig. 6AThis is a schematic diagram of the electric wire of the present invention touching the guide portion;

[0029] Figure 6B A schematic diagram of the inclined surface of the electrical conductor touching the contact portion of the present invention;

[0030] Figure 6C It is a schematic diagram of the flat surface of the electrical conductor touching the contact portion according to the present invention.

[0031] Description of reference numerals: 1-multi-core electric wire connector; 2-terminal junction box; 21-wire insertion hole; 211-outer end; 211a-first section; 212-inner end; 212a-second section; 213-guiding portion; 213a-arc recess; 213b-guiding space; 214-first section; 215-second section; 216-third section; 22-stop space; 23-housing; 24-blocking cover; 241-clamping hole; 242- Clamping block; 3-contact assembly; 31-terminal contact; 32-spring steel sheet; 321-lower edge; 322-upper edge; 323-spring; 324-deformation section; 324a-first turning end; 324b-second turning end; 325-pressing section; 326-blade; 33-collector; 331-contact section; 331a-flat surface; 331b-inclined surface; 4-electric conductor; 41-conductive material; 42-insulating material; A-insertion direction. DETAILED DESCRIPTION

[0032] The present invention will be further described below in conjunction with specific embodiments and drawings, and the advantages and features of the present invention will become more apparent as the description proceeds.

[0033] See also Figure 1 As shown, the multi-core electric wire connector 1 of the present invention comprises a terminal box 2 and a contact assembly 3, wherein the terminal box 2 is configured with a plurality of wire insertion holes 21 along a wire insertion direction A, and a stop space 22 connected to the plurality of wire insertion holes 21 is formed inside, so that the plurality of electric wires 4 with the insulating material 42 removed can be inserted into the stop space 22 along the plurality of wire insertion holes 21 respectively.

[0034] It is characterized in that the terminal box 2 includes a shell 23, a blocking cover 24 and a snap-in hole 241. The shell 23 is made of a transparent material, and the blocking cover 24 is installed on the shell 23 in a disassembly direction, and the disassembly direction is parallel to the wiring direction A. The blocking cover 24 has a snap-in block 242 corresponding to the snap-in hole 241. The snap-in block 242 can enable the plurality of wiring holes 21 to be quickly assembled to the terminal box 2.

[0035] It is characterized in that the contact component 3 is installed in the stop space 22 of the terminal box 2, and is constructed with a plurality of terminal contacts 31 arranged in a row and adjacent to each other. The contact component 3 includes a spring steel sheet 32 ​​and a busbar 33 forming all the terminal contacts 31. The spring steel sheet 32 ​​has a lower edge 321 connected to the busbar 33 and an upper edge 322 forming a plurality of windows. The plurality of windows are aligned one-to-one with the positions of the plurality of wire insertion holes 21, and each has a spring piece 323 extending toward the lower edge 321.

[0036] See also Figure 2 As shown, the plurality of wire insertion holes 21 have an outer end 211 and an inner end 212 located in the stop space 22, and the terminal box 2 extends a guide portion 213 aligned with the position of the spring piece 323 at a bottom position adjacent to the inner end 212 of the plurality of wire insertion holes 21, and the busbar 33 extends a plurality of contact portions 331 aligned with the position of the guide portion 213 at an adjacent end facing the wire insertion hole 21.

[0037] It is characterized in that there is a spacing distance between the guiding portion 213 and the contact portion 331 to form a non-contact state.

[0038] The present invention is characterized in that a guiding space 213 b is formed between the guiding portion 213 and the wire insertion hole 21 , and an arc cavity 213 a is formed on the top surface of the guiding portion 213 for maintaining the moving direction of the electric wire 4 .

[0039] The contact portion 331 is characterized in that it forms a flat surface 331a parallel to the wire insertion direction A and an inclined surface 331b extending from the flat surface 331a, and the bottom position of the inclined surface 331b is lower than the lowest position of the arc cavity 213a.

[0040] It is characterized in that the spring piece 323 has a deformation section 324 and a pressing section 325, the deformation section 324 has a first turning end 324a connected to the upper edge portion 322 and a second turning end 324b connected to the pressing section 325, and one side of the pressing section 325 is connected to the second turning end 324b, and the other opposite side is constructed with a sharp-angled blade 326.

[0041] The characteristic of the blade 326 is that the electric conductor 4 can be easily inserted after the insulating material 42 is stripped off, and the blade 326 will bite the electric conductor 4 tightly, making it difficult for the electric conductor 4 to fall off, thereby preventing the entire electric conductor 4 from entering too deeply and affecting the conductive effect of the electric conductor 4.

[0042] In addition, the length of the deformation section 324 is greater than the length of the pressing section 325, and the length of the pressing section 325 is less than 2 mm; and the acute angle of the blade 326 is between 50 degrees and 80 degrees, so that the electrical conductor 4 and the contact portion 331 are more tightly and firmly connected, and are not easy to be disconnected when pulled.

[0043] See also Figure 2 , 3 As shown, the outer end 211 has a first cross section 211a, and the inner end 212 has a second cross section 212a with an area smaller than the first cross section 211a, forming an effect of gradually shrinking the through hole, so that the electrical conductor 4 can be more concentrated and exert force on the spring 323 during the insertion process.

[0044] It is characterized in that the electrical wire 4 is inserted into the multi-core electrical wire connector 1 according to an insertion direction A, and will contact the insertion hole 21, the spring 323, the guide portion 213 and the contact portion 331 in sequence, and then the spring 323 and the contact portion 331 will jointly clamp the electrical wire 4.

[0045] It is characterized in that the wire insertion hole 21 is sequentially formed with a first section 214, a second section 215 and a third section 216 according to the wire insertion direction A. The first section 214 and the second section 215 are respectively set to a conical shape with different tapering slopes, and the third section 216 is set to a cylindrical shape.

[0046] See also Figure 2 , 4 As shown, the terminal box 2 has an angular structure on its exterior, and the angular structure is formed in conjunction with the shape of the plurality of wire insertion holes 21 and the contact assembly 3, and the angular structure can facilitate force application when held by hand, and the multi-core electrical conductor connector 1 is not easy to slide when inserting the electrical conductor 4, making it more convenient to insert the electrical conductor 4.

[0047] In a preferred embodiment, please refer to Figure 5A As shown, when the multi-core electric wire connector 1 is inserted according to the wire insertion direction A, the electric wire 4 will be inserted from the outer end 211 of the wire insertion hole 21. When the electric wire 4 is inserted through the first section 214 and the second section 215, the electric wire 4 will gradually concentrate in the majority of the wire insertion holes 21, and the electric wire 4 is not easy to diverge in the majority of the wire insertion holes 21.

[0048] See also Figure 5BAs shown, it is characterized in that when the electric wire 4 is inserted into the third section 216 , the insulating material 42 of the electric wire 4 will be blocked by the second section 215 , and only the conductive material 41 of the electric wire 4 will be inserted into the third section 216 .

[0049] See also Fig. 6A As shown, after the electric wire 4 is inserted into the third section 216, the electric wire 4 will first press against the spring sheet 323, and the spring sheet 323 will be lifted upward by the push of the electric wire 4. Because the electric wire 4 has the guiding space 213b, after receiving the reaction force of the spring sheet 323, the electric wire 4 bends downward along the spring sheet 323.

[0050] See also Figure 6B As shown, when the electric wire 4 abuts against the guiding portion 213 , the arc recess 213 a maintains the direction of the electric wire 4 , so that the electric wire 4 can be smoothly guided to the inclined surface 331 b of the contact portion 331 during the insertion process.

[0051] See also Figure 6C As shown, when the electric wire 4 hits the inclined surface 331b, the electric wire 4 will move along the inclined surface 331b to the flat surface 331a. After the electric wire 4 is inserted into the flat surface 331a, the spring 323 increases the clamping force through the pressing section 325, and uses the blade 326 to bite the electric wire 4, so that the electric wire 4 is not easy to loosen.

[0052] The above description and embodiments are only exemplary and do not constitute any limitation to the scope of the present invention. It should be understood by those skilled in the art that the details and forms of the technical solution of the present invention can be modified or replaced without departing from the spirit and scope of the present invention, but these modifications and replacements all fall within the scope of protection of the present invention.

Claims

1. A multi-core electrical conductor connector, comprising: A terminal box is constructed with a plurality of wire insertion holes along a wire insertion direction, and a stop space is formed inside thereof and is communicated with the plurality of wire insertion holes, so that the plurality of electrical wires after the insulation material is removed can be respectively inserted into the stop space along the plurality of wire insertion holes; A contact assembly, installed in the stopper space of the terminal junction box, constructed with a plurality of terminal contacts arranged in a row and adjacent to each other, the contact assembly comprising a spring steel sheet and a busbar forming all the terminal contacts, the spring steel sheet having a lower edge connected to the busbar and an upper edge forming a plurality of windows, the plurality of windows being aligned one-to-one with the positions of the plurality of wire insertion holes, and each having a spring sheet extending toward the lower edge; Features: The plurality of wire insertion holes have an outer end and an inner end located in the stop space, the outer end has a first cross section, and the inner end has a second cross section with an area smaller than the first cross section, so that the electrical wire can concentrate its force on the spring during the insertion process; The terminal box extends a guide portion aligned with the position of the spring sheet at a bottom position adjacent to the inner side ends of the plurality of wire insertion holes, and the current collector extends a plurality of contact portions aligned with the position of the guide portion at an adjacent end facing the wire insertion holes; A guiding space is formed between the guiding portion and the wire insertion hole, and an arc recess is formed on the top surface of the guiding portion to maintain the moving direction of the electric wire, and the contact portion is formed with a flat surface parallel to the wire insertion direction and an inclined surface extending from the flat surface, and the bottom position of the inclined surface is lower than the lowest position of the arc recess.

2. The multi-core electrical conductor connector according to claim 1, characterized in that: The electrical wire is inserted into the multi-core electrical wire connector according to a wire insertion direction, and will sequentially contact the wire insertion hole, the spring sheet, the guide portion and the contact portion, and subsequently the spring sheet and the contact portion will jointly clamp the electrical wire.

3. The multi-core electrical conductor connector according to claim 2, characterized in that: The wire insertion hole is sequentially formed with a first section, a second section and a third section according to the wire insertion direction. The first section and the second section are respectively configured as cones with different tapered slopes, and the third section is configured as a cylinder.

4. The multi-core electrical conductor connector according to claim 1, characterized in that: There is a spacing distance between the guiding portion and the contact portion to form a non-contact state.

5. The multi-core electrical conductor connector according to claim 1, characterized in that: The spring piece has a deformation section and a pressing section, the deformation section has a first turning end connected to the upper edge and a second turning end connected to the pressing section, one side of the pressing section is connected to the second turning end, and the other opposite side is constructed with a sharp-angled blade.

6. The multi-core electrical conductor connector according to claim 1, characterized in that: The terminal box includes a shell and a cover, the shell is made of a transparent material, and the cover is installed on the shell in a disassembly direction, and the disassembly direction is parallel to the wire insertion direction.

7. The multi-core electrical conductor connector according to claim 5, characterized in that: The length of the deformation section is greater than that of the pressing section, and the length of the pressing section is less than 2 mm; and the acute angle of the blade is between 50 degrees and 80 degrees.

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