Multi-positioning small-size waterproof push-pull self-locking connector

Abstract

The utility model relates to the technical field of connectors, in particular to a multi-positioning small-size waterproof push-pull self-locking connector. Comprising a metal shell, a plastic main body installed on the metal shell and a terminal group embedded in the plastic main body, compared with the prior art, the outer surface of the plastic main body is coated with a first metal supporting shell, so that the plastic main body cannot be scratched by the metal shell in the process of installing the plastic main body into the metal shell, and the service life of the plastic main body is prolonged. Therefore, the sealing performance of the assembly between the plastic main body and the metal shell is improved, the generation of gaps is reduced, and the waterproof performance is improved. And the plastic main body is coated by the first metal supporting sheet and the second metal supporting sheet, so that the position change of the terminal due to large deformation of the plastic main body can be prevented, and the assembly yield of the connector is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of connectors, in particular to a multi-positioning small-volume waterproof push-pull self-locking connector. Background Art

[0002] A connector is an indispensable component in electronic devices, which is used to connect two active devices and transmit current or signals. A connector is generally a plug. During use, the plug is inserted into the corresponding socket, and the plug terminals on the plug are in contact with the socket terminals on the socket to achieve electrical connection or signal connection between the plug and the socket.

[0003] With the development of science and technology, most scientific and technological products are progressing towards the direction of strong computing power, small size and high expandability. However, the technical defects of current small-size connectors are as follows: limited by the overall size of the connector, usually for a plastic body of the same specification size, multiple terminals need to be accommodated to increase the terminal density of the connector; but the increase in the number of terminals will cause the overall supporting strength of the plastic body to become worse; once the plastic body is directly and forcibly inserted into the metal shell, it is easy to squeeze the plastic body, resulting in a change in the position of the terminal group, seriously affecting the production yield of the connector; at the same time, since the metal shell is made of metal material and has a higher hardness than the plastic body, once the plastic body is forcibly inserted into the metal shell, it is easy to scratch the plastic on the outer surface of the plastic body, and then gaps appear. Once external liquid penetrates through the gaps, it will affect the normal use of the connector and even cause damage.

[0004] Therefore, it is necessary to study a new technical solution to solve the above problems. Summary of the Utility Model

[0005] In view of this, in view of the deficiencies of the existing technology, the main purpose of the present utility model is to provide a multi-positioning small-volume waterproof push-pull self-locking connector, which effectively solves the technical problems of low production yield and poor waterproof effect existing in the prior art.

[0006] To achieve the above object, the present utility model adopts the following technical solution: A multi-positioning small-volume waterproof push-pull self-locking connector, comprising a metal shell, a plastic main body installed in the metal shell, and a terminal group embedded in the plastic main body; A self-locking shell is movably installed on the outer surface of the metal shell, and the self-locking shell is used to lock the plug-in connection of the connector; At least one first positioning portion and two second positioning portions are provided at the front end of the outer surface of the metal shell, and the first positioning portion and the second positioning portion are arranged in a circumferential array along the outer surface of the metal shell; The front end of the outer surface of the plastic main body is covered with a first metal support shell, the rear end of the outer surface of the plastic main body is covered with a first metal support piece and a second metal support piece, and the end portions of the first metal support piece and the second metal support piece are spaced apart to form a first gap; When the plastic main body is installed in the metal shell, the outer surfaces of the first metal support shell, the first metal support piece and the second metal support piece all abut against the inner surface of the metal shell.

[0007] The beneficial effects of the multi-positioning small-volume waterproof push-pull self-locking connector provided in this application are as follows: Compared with the prior art,

[0008] First, by covering the outer surface of the plastic main body with a first metal support shell, during the process of installing the plastic main body into the metal shell, the problem that the metal shell scratches the plastic main body will not occur, thereby improving the sealing performance between the plastic main body and the metal shell, reducing the generation of gaps, and thus improving the waterproof performance;

[0009] Second, by providing a first metal support piece and a second metal support piece to cover the rear end of the plastic main body, and the end portions of the first metal support piece and the second metal support piece are spaced apart to form a first gap; With the arrangement of the first metal support piece and the second metal support piece, during the process of installing the plastic main body into the metal shell, a certain amount of deformation is allowed to occur to ensure the tightness after the plastic main body is installed in the metal shell, thereby preventing the position change of the terminal group due to large deformation of the plastic main body and improving the yield rate of connector assembly.

[0010] As a preferred solution: The first metal support shell is provided with a first limiting notch, and the front end of the outer surface of the plastic main body is provided with a first limiting convex portion that can be inserted into the first limiting notch.

[0011] As a preferred solution: Both the first metal support piece and the second metal support piece are provided with second limiting notches, and the outer surface of the plastic main body is provided with second limiting convex portions that can be inserted into the second limiting notches.

[0012] As a preferred solution: The first limiting notch and the second limiting notch are oppositely arranged and can be connected together; The metal shell is provided with a first glue injection hole penetrating through its inner and outer surfaces, and the first glue injection hole is located at the position of the first limiting notch and / or the second limiting notch.

[0013] As a preferred solution: The first metal support shell is provided with a first annular limiting notch, and the outer surface of the plastic main body is provided with a first annular limiting convex portion inserted into the first annular limiting notch; the first metal support sheet and the second metal support sheet are provided with a second annular limiting groove, and the outer surface of the plastic main body is provided with a second annular limiting convex portion inserted into the second annular limiting groove.

[0014] As a preferred solution: The metal shell includes a first installation cavity, a first insertion interface communicating with the first installation cavity, and a first wiring interface communicating with the first installation cavity. The first insertion interface penetrates the front surface of the metal shell, and the first wiring interface penetrates the rear surface of the metal shell; after the plastic main body is installed in the first installation cavity, the insertion portion of the terminal group extends to the first insertion interface, and the wiring portion of the terminal group extends to the first wiring interface.

[0015] As a preferred solution: The front surface of the first metal support shell is provided with a first position identification piece, the first position identification piece extends forward to the first insertion interface, and one surface of the first position identification piece abuts against the surface of the first insertion interface.

[0016] As a preferred solution: The width of the first positioning portion is greater than the width of the second positioning portion, and the distance between the two second positioning portions is less than the distance between the first positioning portion and any one of the second positioning portions. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0018] Figure 1 is a schematic perspective view of a multi-positioning small-volume waterproof push-pull self-locking connector provided by an embodiment of the present application;

[0019] Figure 2 is Figure 1 the exploded view of the multi-positioning small-volume waterproof push-pull self-locking connector shown in;

[0020] Figure 3 is Figure 1 the sectional view taken along line A-A of the multi-positioning small-volume waterproof push-pull self-locking connector shown in;

[0021] Figure 4 is Figure 3 the partial enlarged view at A of the multi-positioning small-volume waterproof push-pull self-locking connector shown in;

[0022] Figure 5 is Figure 1Cross-sectional view taken along line B-B of the multi-position small-volume waterproof push-pull self-locking connector shown;

[0023] Figure 6 is Figure 5 Partially enlarged view of location A of the multi-position small-volume waterproof push-pull self-locking connector shown;

[0024] Figure 7 is Figure 1 Schematic structural diagram of the first positioning portion and the second positioning portion of the multi-position small-volume waterproof push-pull self-locking connector shown.

[0025] Among them, the reference numerals in the figure are as follows:

[0026] 10. Multi-position small-volume waterproof push-pull self-locking connector; 11. Metal shell; 1101. First installation cavity; 1102. First insertion port; 1103. First wiring port; 111. First positioning portion; 112. Second positioning portion; 113. First glue injection hole; 114. Second inclined surface; 12. Plastic main body; 121. First metal support shell; 122. First metal support piece; 123. Second metal support piece; 124. First gap; 125. First limiting notch; 126. First limiting convex portion; 127. Second limiting notch; 128. Second limiting convex portion; 129. First annular limiting notch; 1200. First annular limiting convex portion; 1201. Second annular limiting groove; 1202. Second annular limiting convex portion; 1203. First position identification piece; 13. Terminal group; 14. Self-locking shell; 141. Elastic arm; 142. First buckling convex portion; 143. First inclined surface; 15. Wire locking shell; 151. Wire locking clip arm; 16. Push-pull shell. Detailed implementation manners

[0027] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present application clearer, the present application will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0028] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0029] It should be understood that the orientation or positional relationship indicated by terms such as "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present application.

[0030] In addition, the terms "first" and "second" are only used for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present application, the meaning of "a plurality" is two or more unless otherwise specifically defined.

[0031] In order to make the purpose, technical solution and advantages of the present utility model clearer, the following further describes the present utility model in detail with reference to the drawings and embodiments.

[0032] Please refer to Figures 1 to 7 , and now the multi-position small-volume waterproof push-pull self-locking connector 10 provided by the embodiment of the present application will be described. The multi-position small-volume waterproof push-pull self-locking connector 10 includes: a metal shell 11, a plastic main body 12, and a terminal group 13.

[0033] The plastic main body 12 is installed in the metal shell 11, and the terminal group 13 is embedded in the plastic main body 12 to form a connector. A self-locking shell 14 is movably installed on the outer surface of the metal shell 11, and the self-locking shell 14 is used to lock the plug-in connection of the connector; at least one first positioning portion 111 and two second positioning portions 112 are provided at the front end of the outer surface of the metal shell 11, and the first positioning portion 111 and the second positioning portion 112 are arranged in a circular array along the outer surface of the metal shell 11; the front end of the outer surface of the plastic main body 12 is covered with a first metal support shell 121, the rear end of the outer surface of the plastic main body 12 is covered with a first metal support piece 122 and a second metal support piece 123, and the ends of the first metal support piece 122 and the second metal support piece 123 are spaced apart to form a first gap 124; when the plastic main body 12 is installed in the metal shell 11, the outer surfaces of the first metal support shell 121, the first metal support piece 122, and the second metal support piece 123 all abut against the inner surface of the metal shell 11.

[0034] Specifically, by coating the outer surface of the plastic body 12 with the first metal support shell 121, the metal shell 11 will not scratch the plastic body 12 during the process of the plastic body 12 being installed into the metal shell 11, thereby improving the sealing of the assembly between the plastic body 12 and the metal shell 11, reducing the generation of gaps, and thus improving the waterproof performance; at the same time, by providing the first metal support sheet 122 and the second metal support sheet 123, the rear end of the plastic body 12 is coated, and the end of the first metal support sheet 122 and the end of the second metal support sheet 123 are arranged at a distance to form a first gap 124; with the help of the provision of the first metal support sheet 122 and the second metal support sheet 123, a certain deformation is allowed to occur during the process of the plastic body 12 being installed into the metal shell 11, so as to ensure the tightness of the plastic body 12 after being installed into the metal shell 11, thereby preventing the terminal group 13 from changing position due to the large deformation of the plastic body 12, thereby improving the yield rate of connector assembly.

[0035] Furthermore, the self-locking shell 14 can be installed on the outer surface of the metal shell 11 so as to be movably moved forward and backward. A plurality of elastic arms 141 are provided at the front end of the self-locking shell 14. The plurality of elastic arms 141 are arranged in a circular array on the front surface of the self-locking shell 14. A first snap-fitting protrusion 142 is provided on the outer surface of each elastic arm 141, and a first inclined surface 143 is provided on the inner surface of each elastic arm 141. The metal shell 11 is provided with a second inclined surface 114 abutting against the first inclined surface 143. When the self-locking shell 14 is pushed to move forward, the first inclined surface 143 can abut against the second inclined surface 114, and act to cause the front ends of the plurality of elastic arms 141 to open outward.

[0036] It can be understood that the multi-positioning small-volume waterproof push-pull self-locking connector 10 provided in the present application is a connector socket, which can be plugged and unplugged with the connector plug adapted thereto to achieve electrical connection or signal connection. The connector plug has a socket, and the socket has a groove inside for the first buckling protrusion 142 to buckle into. When the connector plug and the connector are plugged in, the first buckling protrusion 142 can be buckled into the groove of the connector plug by pushing the self-locking shell 14 forward to limit the removal of the connector plug. Only when the self-locking shell 14 moves backward and the first buckling protrusion 142 is out of the groove can the connector plug be pulled out.

[0037] In some embodiments of the present application, the first metal support shell 121 is provided with a first limiting notch 125, and the front end of the outer surface of the plastic body 12 is provided with a first limiting protrusion 126 that can be inserted into the first limiting notch 125. Both the first metal support sheet 122 and the second metal support sheet 123 are provided with second limiting notches 127, and the outer surface of the plastic body 12 is provided with a second limiting protrusion 128 that can be inserted into the second limiting notch 127. The first limiting notch 125 and the second limiting notch 127 are oppositely arranged and can be communicated with each other; the metal shell 11 is provided with a first glue injection hole 113 penetrating through its inner and outer surfaces, and the first glue injection hole 113 is located at the position where the first limiting notch 125 and / or the second limiting notch 127 are located. After the plastic body 12 is installed in the metal shell 11, plastic paste is injected into the first limiting notch 125 and the second limiting notch 127 from the first glue injection hole 113, and the plastic paste is used to fill the gap between the plastic body 12 and the metal shell 11. After the plastic paste is cured, the gap between the metal shell 11 and the plastic body 12 can be sealed, thereby improving the overall waterproof performance of the connector.

[0038] Preferably, the first metal support shell 121 is provided with a first annular limiting notch 129, and the outer surface of the plastic body 12 is provided with a first annular limiting protrusion 1200 inserted into the first annular limiting notch 129; the first metal support sheet 122 and the second metal support sheet 123 are provided with a second annular limiting groove 1201, and the outer surface of the plastic body 12 is provided with a second annular limiting protrusion 1202 inserted into the second annular limiting groove 1201. With such a structure, the stability between the first metal support shell 121, the first metal support sheet 122, the second metal support sheet 123 and the plastic body 12 can be improved, and it is not easy to shift.

[0039] The metal housing 11 includes a first installation cavity 1101, a first insertion interface 1102 communicating with the first installation cavity 1101, and a first wiring interface 1103 communicating with the first installation cavity 1101. The first insertion interface 1102 penetrates through the front surface of the metal housing 11, and the first wiring interface 1103 penetrates through the rear surface of the metal housing 11. After the plastic main body 12 is inserted into the first installation cavity 1101, the insertion part of the terminal group 13 extends to the first insertion interface 1102, and the wiring part of the terminal group 13 extends to the first wiring interface 1103. Before assembling the plastic main body 12, first install the first metal support shell 121, the first metal support piece 122, and the second metal support piece 123 on the plastic main body 12. Then insert the first metal support shell 121 into the first installation cavity 1101 from the first wiring interface 1103. Since the first metal support shell 121 provides a supporting force, there will be no excessive extrusion on the plastic main body 12, thus ensuring that during the assembly process of the plastic main body 12, the terminal group 13 is not easily displaced, so that the plastic main body 12 can be inlaid with multiple terminals. At the same time, by using the first metal support piece 122 and the second metal support piece 123, the plastic main body 12 is supported, but the first metal support piece 122 and the second metal support piece 123 allow the plastic main body 12 to undergo a certain amount of deformation, so that the plastic main body 12 can be smoothly inserted into the first installation cavity 1101.

[0040] Here, it should be noted that since a first gap 124 is formed between the first metal support piece 122 and the second metal support piece 123, this first gap 124 is the maximum deformation distance of the plastic main body 12. When assembling the plastic main body 12, when the first metal support piece 122 and the second metal support piece 123 are in mutual contact, it is the maximum allowable deformation amount of the plastic main body 12. When exceeding this maximum deformation amount, the first metal support piece 122 and the second metal support piece 123 provide support to prevent the plastic main body 12 from continuing to deform.

[0041] In some other embodiments of the present application, a first position identification piece 1203 is provided on the front surface of the first metal support shell 121. The first position identification piece 1203 extends forward to the first insertion interface 1102, and one surface of the first position identification piece 1203 abuts against the surface of the first insertion interface 1102. The first position identification piece 1203 cooperates with the first positioning part 111 and the second positioning part 112 to ensure that a connector plug with the correct specification is inserted, achieving the effect of preventing misinsertion.

[0042] Specifically, the width of the first positioning portion 111 is greater than the width of the second positioning portion 112, and the distance between the two second positioning portions 112 is less than the distance between the first positioning portion 111 and any second positioning portion 112. By providing first positioning portions 111 and second positioning portions 112 with different spacing distances, different connector plugs can be adapted for insertion, further improving the effect of preventing mis-insertion.

[0043] In some embodiments of the present application, the cross section of the end of the first metal shell facing the first plug port 1102 is circular; there is one first positioning portion 111, and there are two second positioning portions 112, and the first positioning portion 111 and the second positioning portion 112 are arranged on the outer surface of the first metal shell in a circular array. The angle defining the spacing between the first positioning portion 111 and at least one second positioning portion 112 is a1, and the angle defining the spacing between the two second positioning portions 112 is a2. The spacing distance of angle a1 is between 45 degrees and 90 degrees, and the spacing distance of angle a2 is between 45 degrees and 60 degrees.

[0044] Preferably, a wire locking housing 15 is installed in the first plug-in port 1102, and the wire locking housing 15 is provided with a plurality of wire locking clamp arms 151; a push-pull housing 16 is movably installed at the rear end of the metal shell 11, and the push-pull housing 16 can move forward and backward. When the wire harness passes through the wire locking housing 15 and is inserted into the first plug-in port 1102 and connected to the terminal set 13, the push-pull housing 16 is pushed forward, and the plurality of wire locking clamp arms 151 of the wire locking housing 15 can be pressed against the outer surface of the wire harness to clamp the wire harness and fix it.

[0045] It can be understood that the terminal group 13 has a plurality of plug-in terminals, each of which includes a plug-in portion, an embedding portion and a connecting portion. The plug-in portion is used to be plugged and connected with the terminal of the connector plug, the embedding portion is embedded in the plastic body 12, and the connecting portion is used to connect with each wire of the line speed. This is a conventional design method for those skilled in the art and will not be elaborated here one by one.

[0046] The above are only preferred embodiments of the present invention, and only specifically describe the technical principles of the present invention. These descriptions are only for the purpose of explaining the principles of the present invention, and cannot be interpreted as limiting the scope of protection of the present invention in any way. Based on the explanation here, any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention, and other specific implementation methods of the present invention that can be associated with by technicians in this field without creative labor, should be included in the scope of protection of the present invention.

Claims

1. A multi-positioning small-volume waterproof push-pull self-locking connector, comprising a metal shell (11), a plastic main body (12) installed in the metal shell (11), and a terminal group (13) embedded in the plastic main body (12); characterized in that: A self-locking shell (14) is movably installed on the outer surface of the metal shell (11), and the self-locking shell (14) is used to lock the plug-in connection of the connector; at least one first positioning portion (111) and two second positioning portions (112) are provided at the front end of the outer surface of the metal shell (11), and the first positioning portion (111) and the second positioning portion (112) are arranged in a circumferential array along the outer surface of the metal shell (11); A first metal support shell (121) is coated on the front end of the outer surface of the plastic main body (12), a first metal support piece (122) and a second metal support piece (123) are coated on the rear end of the outer surface of the plastic main body (12), and the end portions of the first metal support piece (122) and the second metal support piece (123) are spaced apart to form a first gap (124); After the plastic main body (12) is installed in the metal shell (11), the outer surfaces of the first metal support shell (121), the first metal support piece (122), and the second metal support piece (123) are all abutted against the inner surface of the metal shell (11).

2. The multi-positioning small-volume waterproof push-pull self-locking connector according to claim 1, wherein: The first metal support shell (121) is provided with a first limiting notch (125), and the front end of the outer surface of the plastic main body (12) is provided with a first limiting protrusion (126) that can be inserted into the first limiting notch (125).

3. The multi-positioning small-volume waterproof push-pull self-locking connector according to claim 2, characterized in that: Both the first metal support piece (122) and the second metal support piece (123) are provided with second limiting notches (127), and the outer surface of the plastic main body (12) is provided with second limiting protrusions (128) that can be inserted into the second limiting notches (127).

4. The multi-position small-volume waterproof push-pull self-locking connector according to claim 3, characterized in that: The first limiting notch (125) and the second limiting notch (127) are arranged oppositely and can be communicated with each other; The metal shell (11) is provided with a first glue injection hole (113) penetrating through its inner and outer surfaces, and the first glue injection hole (113) is located at the position of the first limiting notch (125) and / or the second limiting notch (127).

5. The multi-positioning small-volume waterproof push-pull self-locking connector according to claim 1, characterized in that: The first metal support shell (121) is provided with a first annular limiting notch (129), and the outer surface of the plastic main body (12) is provided with a first annular limiting protrusion (1200) inserted into the first annular limiting notch (129); The first metal support piece (122) and the second metal support piece (123) are provided with second annular limiting grooves (1201), and the outer surface of the plastic main body (12) is provided with second annular limiting protrusions (1202) inserted into the second annular limiting grooves (1201).

6. The multi-positioning small-volume waterproof push-pull self-locking connector according to any one of claims 1-5, characterized in that: The metal shell (11) includes a first installation cavity (1101), a first plug-in interface (1102) communicating with the first installation cavity (1101), and a first wiring interface (1103) communicating with the first installation cavity (1101), the first plug-in interface (1102) penetrates through the front surface of the metal shell (11), and the first wiring interface (1103) penetrates through the rear surface of the metal shell (11); After the plastic body is installed in the first installation cavity, the insertion part of the terminal group (13) extends to the first insertion port, and the wiring part of the terminal group (13) extends to the first wiring port.

7. The multi-position small-volume waterproof push-pull self-locking connector according to claim 6, wherein: A first position identification piece (1203) is provided on the front surface of the first metal support shell (121). The first position identification piece (1203) extends forward to the first insertion port (1102), and one surface of the first position identification piece (1203) abuts against the surface of the first insertion port (1102).

8. The multi-position small-volume waterproof push-pull self-locking connector according to claim 1, characterized in that: The width of the first positioning part (111) is greater than the width of the second positioning part (112), and the distance between the two second positioning parts (112) is less than the distance between the first positioning part (111) and any one of the second positioning parts (112).

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