Double-row zero terminal connector

Abstract

The embodiment of the utility model discloses a double-row zero terminal connector, which comprises an inner frame provided with a plurality of threading holes, and the plurality of threading holes are distributed in two rows parallel to each other on the inner frame; the wire rods are in one-to-one correspondence with the wire penetrating holes and penetrate through the wire penetrating holes, and the ends, close to the wire penetrating holes, of the wire rods are peeling tin dipping ends; the connector shell is provided with a forming groove corresponding to the inner frame and a forming hole corresponding to the wire rod, the inner frame is located in the forming groove, the wire rod is arranged in the forming hole in a penetrating mode, and the peeling tin dipping end extends out of the connector shell; wherein the connector shell is formed by in-mold injection molding. According to the double-row zero terminal connector provided by the utility model, the positioning of the double-row wires is realized through the threading holes on the inner frame, and the inner frame is used as a supporting piece of the wires for injection molding in a forming mold, so that the problems that the double-row wires are difficult to stably position in the mold and the demolding is difficult after the connector is formed are effectively solved.

Description

Technical Field

[0001] The utility model relates to the technical field of connectors, in particular to a double-row zero-terminal connector. Background Art

[0002] In the current field of connector technology, the industry has begun to explore and apply an innovative zero-terminal connector technology. This technology eliminates the traditional connector terminals and instead uses the method of directly tinning the wire after stripping, and uses the tinned part directly as the contact point of the connector, thus realizing the zero-terminal connector.

[0003] However, although this zero-terminal connector technology brings significant convenience and efficiency improvements, it faces a major technical challenge in practical applications. The traditional connector molding mold design usually only includes an upper mold and a lower mold. This design performs well when manufacturing single-row connectors, but it is powerless when facing double-row structures. It is difficult for double-row wires to maintain a stable positioning between the upper mold and the lower mold. At the same time, if you try to stabilize the wires by adding a supporting mold, the demolding process will become extremely difficult. Therefore, limited by the current demolding technology bottleneck, this zero-terminal connector technology is currently mainly limited to the production of single-row structures, and cannot achieve a more compact and efficient double-row structure connector. Utility Model Content

[0004] The purpose of the utility model is to overcome the shortcomings of the prior art and provide a double-row zero-terminal connector to solve the problem that the existing connector molding mold design usually only includes an upper mold and a lower mold. This design performs well when manufacturing single-row connectors, but it is powerless when facing a double-row structure. It is difficult for the double-row wire to maintain a stable position between the upper mold and the lower mold. At the same time, if an attempt is made to stabilize the wire by adding a supporting mold, the demoulding process will become extremely difficult. Therefore, limited by the current demoulding technology bottleneck, this zero-terminal connector technology is currently mainly limited to the production of a single-row structure, and cannot achieve the disadvantage of a more compact and efficient double-row structure connector.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] An embodiment of the utility model provides a double-row zero-terminal connector, which includes: an inner frame, a plurality of wire threading holes are opened on the inner frame, and the plurality of wire threading holes are distributed in two parallel rows on the inner frame; wires, the wires correspond to the wire threading holes one by one and are passed through the wire threading holes, and the end of the wires close to the wire threading holes is a stripping and tinning end; a connector shell, the connector shell has a molding groove corresponding to the inner frame and a molding hole corresponding to the wire, the inner frame is located in the molding groove, the wire is passed through the molding hole, and the stripping and tinning end protrudes from the connector shell; wherein, the connector shell is in-mold injection molded.

[0007] In a preferred embodiment, the wire is interference fit with the threading hole.

[0008] In a preferred embodiment, an outer mold embedding hole is further provided on the inner frame, and a molding column corresponding to the outer mold embedding hole is provided in the connector housing.

[0009] In a preferred embodiment, at least two outer mold embedding holes are provided on the inner frame, and the inner frame is a symmetrical structure.

[0010] In a preferred embodiment, a first hook and a second hook are respectively provided on both sides of the connector housing, and the diameter of the first hook is larger than that of the second hook.

[0011] In a preferred embodiment, the threading holes in the first row are symmetrically arranged with respect to the threading holes in the second row.

[0012] In a preferred embodiment, the spacing between the threading holes in the first row and the threading holes in the second row is greater than or equal to 2 mm.

[0013] In a preferred embodiment, the stripped and tinned ends of the plurality of wires are parallel to each other.

[0014] Compared with the prior art, the double-row zero-terminal connector of the utility model realizes the positioning of the double-row wires through the wire holes on the inner frame, and uses the inner frame as a support for the wires for injection molding in the molding mold, which effectively solves the problem that the double-row wires are difficult to stably position in the mold and the connector is difficult to demold after molding.

[0015] The above description is only an overview of the technical solution of the utility model. In order to more clearly understand the technical means of the utility model, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the utility model more obvious and easy to understand, the following preferred embodiments are specifically cited and described in detail as follows. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 This is an exploded view of a double-row zero-terminal connector of the utility model;

[0018] Figure 2 This is an exploded view of a double-row zero-terminal connector of the utility model from another angle;

[0019] Figure 3 This is a schematic diagram of the structure of a double-row zero-terminal connector of the utility model;

[0020] Figure 4 This is a schematic structural diagram of a double-row zero-terminal connector of the utility model from another angle;

[0021] Figure 5 This is a three-dimensional structural schematic diagram of an inner frame in a double-row zero-terminal connector of the utility model;

[0022] Figure 6 It is a top view of a double-row zero-terminal connector of the utility model;

[0023] Figure 7 The utility model is a front view of a double-row zero-terminal connector.

[0024] Description of the symbols in the figure:

[0025] 1. Wire; 11. Stripping and tinning end; 2. Inner frame; 21. Threading hole; 22. External mold embedding hole; 3. Connector housing; 31. Forming groove; 32. Forming hole; 33. First hook; 34. Second hook; 4. PCB board. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below with reference to the accompanying drawings and specific implementation methods.

[0027] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the utility model.

[0028] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships described in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0029] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0030] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be connected, detachably connected, or integrated; it can be mechanically connected or electrically connected; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0031] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0032] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms should not be understood as necessarily being directed to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification.

[0033] See also Figures 1 to 6 The embodiment of the utility model provides a double-row zero-terminal connector, which includes: an inner frame 2, a plurality of threading holes 21 are opened on the inner frame 2, and the plurality of threading holes 21 are distributed in two parallel rows on the inner frame 2; a wire 1, the wire 1 corresponds to the threading hole 21 one by one and is passed through the threading hole 21, and the end of the wire 1 close to the threading hole 21 is a stripping and tinning end 11; a connector shell 3, the connector shell 3 has a molding groove 31 corresponding to the inner frame 2 and a molding hole 32 corresponding to the wire 1, the inner frame 2 is located in the molding groove 31, the wire 1 is passed through the molding hole 32, and the stripping and tinning end 11 protrudes out of the connector shell 3; wherein the connector shell 3 is in-mold injection molding. It needs to be explained that the wire 1 includes an insulating skin and a copper wire wrapped in the insulating skin, and the stripped and tinned end 11 is a copper wire at one end of the wire 1 that passes through the insulating skin, and the copper wire is wrapped with metal tin. The metal tin can bond the copper wires together and has a certain hardness, so it can replace the terminal connected to the copper wire in the prior art, and the stripped and tinned end 11 is used to replace the terminal, without the need for additional riveting terminals, which saves costs and reduces impedance.

[0034] In this embodiment, a threading hole 21 is provided on the inner frame 2, and the inner frame 2 is used as a positioning support structure to position and support the wire 1, and the double-row threading holes 21 on the inner frame 2 can position the double-row wire 1. After the wire 1 and the inner frame 2 are assembled, they are placed in a molding mold for injection molding to obtain a connector housing 3. After the connector housing 3 is molded, the double-row zero-terminal connector in this embodiment can be demolded. It should be noted that the double-row zero-terminal connector in this embodiment can still use a traditional molding mold when manufacturing, which effectively solves the defect of the difficulty of demolding the double-row terminalless connector in the prior art.

[0035] Furthermore, the wire 1 has an interference fit with the threading hole 21, that is, the outer diameter of the wire 1 is larger than the outer diameter of the threading hole 21. Due to the clamping force generated by the interference fit, the wire 1 is well fixed in the threading hole 21, avoiding loosening or falling off during production or use.

[0036] Further, the first row of threading holes 21 and the second row of threading holes 21 of the two parallel rows of threading holes 21 on the inner frame 2 are symmetrically arranged. Further, the spacing between the first row of threading holes 21 and the second row of threading holes 21 is greater than or equal to 2 mm. Further, the stripped and tinned ends 11 of the plurality of wires 1 are parallel to each other.

[0037] Furthermore, in order to ensure a stable connection between the inner frame 2 and the connector shell 3, an outer mold embedding hole 22 is provided on the inner frame 2, and a molding column corresponding to the outer mold embedding hole 22 is provided in the connector shell 3. That is to say, when the connector shell 3 is injection molded, the injection material will flow into the outer mold embedding hole 22 to form a molding column, so that the inner frame 2 and the connector shell 3 are firmly combined in structure.

[0038] Specifically, at least two outer mold embedding holes 22 are provided on the inner frame 2, and the inner frame 2 is a symmetrical structure.

[0039] For further information, see Figure 7 , the use of the connector needs to distinguish between up, down, left and right. In order to make the user more convenient to use the double-row zero-terminal connector in this embodiment, a first hook 33 and a second hook 34 are respectively provided on both sides of the connector housing 3, and the diameter of the first hook 33 is larger than the second hook 34. Correspondingly, a first hanging hole and a second hanging hole are also provided on the PCB board 4 connected to the double-row zero-terminal connector. The diameter of the first hanging hole is equal to the diameter of the first hook 33, and the diameter of the second hanging hole is equal to the diameter of the second hook 34. Therefore, only when the first hook 33 corresponds to the first hanging hole and the second hook 34 corresponds to the second hanging hole, the double-row zero-terminal connector can be connected to the PCB board 4. If the angle of the double-row zero-terminal connector when connected to the PCB board 4 is incorrect, it cannot be connected, which ensures the accuracy of the double-row zero-terminal connector when connected to the PCB board 4 and reduces the difficulty of assembly.

[0040] Compared with the prior art, the double-row zero-terminal connector of the utility model realizes the positioning of the double-row wires through the wire holes on the inner frame, and uses the inner frame as a support for the wires for injection molding in the molding mold, which effectively solves the problem that the double-row wires are difficult to stably position in the mold and the connector is difficult to demold after molding.

[0041] The above is only a specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can easily think of various equivalent modifications or replacements within the technical scope disclosed by the utility model, and these modifications or replacements should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.

Claims

1. A double-row zero-terminal connector, characterized in that: include: An inner frame, wherein a plurality of threading holes are formed on the inner frame, and the plurality of threading holes are distributed in two parallel rows on the inner frame; Wires, the wires correspond to the threading holes one by one and are passed through the threading holes, and one end of the wires close to the threading holes is a stripped and tinned end; A connector housing, wherein the connector housing has a forming groove corresponding to the inner frame and a forming hole corresponding to the wire, the inner frame is located in the forming groove, the wire is passed through the forming hole, and the stripped and tinned end protrudes out of the connector housing; Wherein, the connector housing is molded by in-mold injection molding.

2. A double-row zero-terminal connector according to claim 1, characterized in that: The wire is interference-fitted with the threading hole.

3. A double-row zero-terminal connector according to claim 1, characterized in that: The inner frame is also provided with an outer mold embedding hole, and the connector housing is provided with a molding column corresponding to the outer mold embedding hole.

4. A double-row zero-terminal connector according to claim 3, characterized in that: The inner frame is provided with at least two outer mold embedding holes, and the inner frame is a symmetrical structure.

5. A double-row zero-terminal connector according to claim 1, characterized in that: A first hook and a second hook are respectively disposed on two sides of the connector housing, and a diameter of the first hook is larger than that of the second hook.

6. A double-row zero-terminal connector according to claim 1, characterized in that: The threading holes in the first row are symmetrically arranged with the threading holes in the second row.

7. A double-row zero-terminal connector according to claim 1, characterized in that: The spacing between the threading holes in the first row and the threading holes in the second row is greater than or equal to 2 mm.

8. A double-row zero-terminal connector according to claim 1, characterized in that: The stripped and tinned ends of the plurality of wires are parallel to each other.

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