Air leakage prevention injection molding connector

Abstract

The utility model relates to an air leakage prevention injection molding connector which comprises a shell, a contact pin and a wire, a terminal is arranged in the shell and comprises a contact pin clamping piece and a wire clamping piece, the contact pin clamping piece is used for clamping the contact pin, and the wire clamping piece is used for clamping the wire. The terminal is electrically connected with the pin and the wire, and the clamping piece on the terminal is used for pressing and fixing the pin and the wire, so that pseudo soldering between the pin and the wire is avoided, the production efficiency is improved, and the clamping effect is relatively good.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of connectors, in particular to a leak-proof injection molded connector. BACKGROUND

[0002] With the development of the times, the market demand for injection molded connectors increases year by year. Injection molded connectors are used to mate with connectors for transmission of current or signals.

[0003] In traditional injection molded connectors, wires and pins are fixedly connected by soldering, which has low production efficiency and has the problem of virtual welding. CONTENT OF THE UTILITY MODEL

[0004] In order to solve the above technical problems, the present application provides a leak-proof injection molded connector.

[0005] The leak-proof injection molded connector provided by the present application adopts the following technical solution:

[0006] A leak-proof injection molded connector includes a housing, a pin, and a wire. The housing is provided with a terminal. The terminal includes a pin clamping piece and a wire clamping piece. The pin clamping piece is used to clamp the pin, and the wire clamping piece is used to clamp the wire.

[0007] By adopting the above technical solution, the pin and the wire are electrically connected by the terminal, and the clamping pieces on the terminal are used to press and fix the pin and the wire, thereby avoiding virtual welding between the pin and the wire, improving production efficiency, and achieving good clamping effect.

[0008] Optionally, a press-fit groove is formed in the wire clamping piece, and the press-fit groove is used to embed the insulating layer of the wire.

[0009] By adopting the above technical solution, when the wire clamping piece is bent to clamp the wire, the clamping piece applies sufficient pressure to the wire to cause the insulating layer wrapped outside the wire to be deformed and embedded in the press-fit groove, thereby increasing the friction between the insulating layer of the wire and the terminal and improving the connection stability of the wire and the terminal.

[0010] Optionally, a limiting rib is arranged on the outer wall of the wire clamping piece, and the limiting rib is used to resist the injection material.

[0011] By adopting the above technical solution, the limiting rib resists the injection material, which can prevent the terminal from being pulled out of the housing, and the limiting rib has good anti-pulling-out effect.

[0012] Optionally, the housing includes a fixed portion, the fixed portion is provided with a thread, and the fixed portion is used to be fixedly connected with a detection device.

[0013] By adopting the technical scheme, the shell is fixed on the detection equipment through the threads on the fixing part, the plug-in connector on the detection equipment and the pin on the terminal are plug-in matched to realize electrical connection, the shell is fixed, and the pin is more stably connected with the plug-in connector.

[0014] Optionally, the shell comprises a limiting boss, the limiting boss and the fixing part are arranged along the mounting direction of the shell, and the maximum sectional width of the limiting boss perpendicular to the mounting direction of the shell is greater than the maximum sectional width of the fixing part perpendicular to the mounting direction of the shell.

[0015] By adopting the technical scheme, when the limiting boss is in contact with the side wall of the detection equipment, it indicates that the fixing part has been fixed on the detection equipment, and the limiting boss limits the mounting of the shell.

[0016] Optionally, the shell comprises a tail part, and the tail part is used for being clamped by an operator.

[0017] By adopting the technical scheme, the tail part is held by an operator or clamped by a tool, force is conveniently applied, and the shell is conveniently fixed on the detection equipment.

[0018] Optionally, the fixing part is provided with a foolproof structure, and the foolproof structure is used for cooperating with the plug-in connector.

[0019] By adopting the technical scheme, the foolproof structure prevents an operator from reversely inserting the pin into the plug-in connector, thereby causing the positive and negative electrodes to be reversely connected.

[0020] Optionally, the foolproof structure comprises a foolproof seat and a guide block which are arranged in sequence along the mounting direction of the shell, and a projection plane of the guide block along the reverse direction of the mounting direction of the shell is located on the foolproof seat.

[0021] By adopting the technical scheme, the guide block plays a guiding role, the foolproof seat plays a limiting role, and the two are matched with each other to achieve a good anti-misoperation effect and stably plug-in connect the connector with the plug-in connector.

[0022] In summary, the present application has at least one of the following beneficial technical effects:

[0023] 1. The clamping piece on the terminal press-bonds the pin and the wire, avoids virtual welding between the pin and the wire, improves production efficiency, and has a good clamping effect.

[0024] 2. The limiting boss limits the mounting of the shell.

[0025] 3. The foolproof structure prevents an operator from reversely inserting the pin into the plug-in connector, thereby causing the positive and negative electrodes to be reversely connected. DETAILED DESCRIPTION

[0026] Figure 1 is a structural schematic diagram of an embodiment of the present application.

[0027] Figure 2 is a schematic view of the structure of the terminal in the present application.

[0028] Reference signs: 1, housing; 12, thread; 13, fixed part; 14, tail part; 2, terminal; 21, pin clamping piece; 22, wire clamping piece; 221, crimping groove; 222, limiting rib; 23, connecting piece; 3, limiting boss; 4, foolproof structure; 41, foolproof seat; 42, guide block; 5, pin; 6, wire. DETAILED DESCRIPTION

[0029] The following will be described in detail in combination with the accompanying Figures 1-2 The present application is further described in detail.

[0030] The embodiment of the present application discloses an air leakage prevention injection molded connector. Referring to Figure 1 With Figure 2 , including a housing 1, a terminal 2, a pin 5 and a wire 6, in production, the housing 1 is injection molded on the terminal 2, and the terminal 2 is located in the housing 1. The terminal 2 includes a pin clamping piece 21, a wire clamping piece 22 and a connecting piece 23, the pin clamping piece 21 and the wire clamping piece 22 are fixedly connected on the connecting piece 23, the number of the pin 5 is two, the two pins 5 are matched with the two pin clamping pieces 21 respectively as positive and negative. The pin clamping piece 21 is used for clamping the pin 5 on the connecting piece 23, and the wire clamping piece 22 is used for clamping the wire 6 on the connecting piece 23, so as to realize the electrical connection of the pin 5 and the wire 6.

[0031] Referring to Figure 1 With Figure 2 , a crimping groove 221 extending along the width direction of the terminal 2 is arranged on the wire clamping piece 22, and the crimping groove 221 is used for embedding the insulating layer of the wire 6 after the insulating layer is deformed by being clamped by the wire clamping piece 22. The limiting rib 222 is protruded on the outer wall of the wire clamping piece 22, and the limiting rib 222 is used for resisting the injection molding material, so as to prevent the terminal 2 from being separated from the housing 1. The crimping groove 221 and the limiting rib 222 are formed on the wire clamping piece 22 through a stamping process.

[0032] Referring to Figure 2 , the length of the pin clamping piece 21 is not greater than 5 mm, by setting the pin clamping piece 21 to be shorter, the injection molding space in the accommodating cavity 11 is increased, the injection molding material is increased, that is, the sealing space is increased, which can effectively prevent air leakage.

[0033] Referring to Figure 1The shell 1 includes a fixed portion 13, and a thread 12 is arranged on the fixed portion 13. The shell 1 is fixedly connected to the detection device through the thread 12 on the fixed portion 13. In other embodiments, the shell 1 and the detection device can also be connected through buckling connection, bolt connection, etc. The pin 5 is arranged on the fixed portion 13, and the pin 5 extends out of the end of the fixed portion 13 from the shell 1 and is used to be connected to a connector in the detection device.

[0034] Referring to Figure 1 The shell 1 includes a limiting boss 3. The direction in which the thread 12 is screwed into the detection device is regarded as the installation direction, and the limiting boss 3 and the fixed portion 13 are arranged along the installation direction of the shell 1. The maximum cross-sectional width of the limiting boss 3 perpendicular to the installation direction of the shell 1 is greater than the maximum cross-sectional width of the fixed portion 13 perpendicular to the installation direction of the shell 1. When the thread 12 on the fixed portion 13 is completely screwed into the detection device, the limiting boss 3 is in contact with the side wall of the detection device to limit the shell 1.

[0035] Referring to Figure 1 The shell 1 includes a tail portion 14, and the tail portion 14 is located on the side of the limiting boss 3 away from the fixed portion 13. The cross-sectional shape of the tail portion 14 is rectangular, and the tail portion 14 is used for being held by an operator or clamped by a tool. The tail portion 14 extends along the reverse direction of the installation direction of the shell 1, the extension length of the tail portion 14 is not less than 5 mm, and the extension length of the tail portion 14 is greater than the length of the limiting boss 3. The tail portion 14 is arranged to be relatively long, which further increases the injection space in the accommodating cavity 11, increases the injection material, that is, increases the sealing space, and can effectively prevent gas leakage. In other embodiments, the cross-sectional shape of the tail portion 14 can be circular, triangular, etc., as long as the tail portion 14 has a certain length.

[0036] Referring to Figure 1 The shell 1 is integrally formed with a fool-proof structure 4. In this embodiment, the fool-proof structure 4 includes a fool-proof seat 41 and a guide block 42 arranged in sequence along the installation direction of the shell 1. The projection surface of the guide block 42 along the reverse direction of the installation direction of the shell 1 is located on the fool-proof seat 41, the cross-sectional area of the guide block 42 is less than the area of the side wall of the fool-proof seat 41 facing the guide block 42, the guide block 42 plays a guiding role, and the fool-proof seat 41 plays a limiting role. Correspondingly, a giving-up slot is arranged on the connector, and the structure of the giving-up slot is matched with the structure of the fool-proof structure 4. In other embodiments, the fool-proof structure 4 can be a avoiding slot arranged on the end of the fixed portion 13, and a convex block corresponding to the avoiding slot is arranged on the connector.

[0037] The assembly principle of the anti-leakage injection connector in the embodiment is as follows: an operator first press-welds the wires 6 and the pin 5 on the terminal 2 through the wire clamping piece 22 and the pin clamping piece 21 respectively, and then places the terminal 2 in a mold to form the shell 1 on the terminal 2 through injection.

[0038] The use principle of the anti-leakage injection molding connector in the embodiment of the application is as follows: an operator first screws the fixed part 13 of the shell 1 on a detection device by hand or tool clamping the tail part 14 until the limiting boss 3 is in abutment with the detection device, which represents that the shell 1 is fixed in place, and then the connector is electrically connected to the detection device through the injection needle 5.

[0039] The above are preferred embodiments of the application, and do not limit the protection scope of the application, so that: equivalent changes made according to the structure, shape, principle of the application should be covered within the protection scope of the application.

Claims

1. A leakproof injection molded connector, characterized by: Including shell (1), pin (5) and wire (6), terminal (2) is equipped in the shell (1), the terminal (2) includes pin clamping piece (21) and wire clamping piece (22), the pin clamping piece (21) is used to hold pin (5), the wire clamping piece (22) is used to hold wire (6).

2. The leakproof injection molded connector of claim 1, wherein: The wire clamping piece (22) is provided with a crimping groove (221), and the crimping groove (221) is used for embedding the insulating layer of the wire (6).

3. The leakproof injection molded connector of claim 2, wherein: The outer wall of the wire clamping piece (22) is provided with a limiting rib (222), and the limiting rib (222) is used to resist the injection material.

4. The leakproof injection molded connector of claim 1, wherein: The shell (1) includes a fixed part (13), the fixed part (13) is provided with a screw (12), and the fixed part (13) is used for fixed connection with the detection equipment.

5. The leakproof injection molded connector of claim 4, wherein: The shell (1) includes a limiting boss (3), the limiting boss (3) and the fixed part (13) are arranged along the installation direction of the shell (1), and the maximum cross-sectional width of the limiting boss (3) perpendicular to the installation direction of the shell (1) is greater than that of the fixed part (13).

6. The leakproof injection molded connector of claim 1, wherein: The shell (1) includes a tail part (14), and the tail part (14) is used for holding by a worker.

7. The leakproof injection molded connector of claim 4, wherein: The fixed part (13) is provided with a foolproof structure (4), and the foolproof structure (4) is used to cooperate with the connector.

8. The leakproof injection molded connector of claim 7, wherein: The foolproof structure (4) includes a foolproof seat (41) and a guide block (42) arranged in sequence along the installation direction of the shell (1), and the projection plane of the guide block (42) in the reverse direction of the installation direction of the shell (1) is located on the foolproof seat (41).

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