A spring pressure quick lock type electrical connector

Abstract

The present invention discloses a spring pressure quick-locking electrical connector, including an insulating shell, an insulating pressure cap, a conductive contact, a slider, a coil spring and a nut. The shell is provided with a shell through hole formed by connecting a large-diameter shell through hole and a small-diameter shell through hole. A crimping through hole is provided on the upper hole wall of the large-diameter shell through hole. The pressure cap, the contact, the slider and the coil spring cooperate with the shell to form an elastic pressing structure capable of crimping a wire. A welding countersunk hole for welding the wire is provided at one end of the contact, and the nut is used to fix the contact to the shell. The present invention utilizes the elasticity of the coil spring to push the slider to press the wire tightly against the contact to achieve stable crimping, and welds another wire to the contact, thereby realizing a quick connection between the two wires and realizing a quick locking connection. To unlock, it is only necessary to press the pressure cap to pull out the wire. The operation is simple and the application is flexible. It is particularly suitable for use in scenes with high mobility.

Description

Technical Field

[0001] The invention relates to an electric connector for connecting wires, in particular to a spring pressure quick-lock type electric connector. Background Art

[0002] Electrical connectors used to connect wires are widely used in electronic equipment such as aerospace, ships, communications, and weapons. In some demanding application environments, electrical connectors need to have excellent transmission speeds and resistance to impact, vibration, high and low temperatures, and corrosion. For example, communication equipment used in the field must achieve reliable signal transmission within a specified time, requiring accuracy and speed in every link. The same is true for electrical connectors that achieve electrical signal transmission between communication modules. They need to be able to connect and disconnect quickly during use, and after connection, they must be able to conduct electricity reliably and be durable no matter how harsh the environment is.

[0003] There are many types of traditional electrical connectors, but they are mainly structures that connect pins and sockets. Various improved structures are also improvements on pins, sockets and shells, but this type of electrical connector based on pins and sockets has two unsolvable defects. First, no matter whether the elastic end is a pin or a socket, the connecting part is a place where the electrical connector is very prone to failure. Problems such as too small insertion and extraction force, too large contact resistance, and broken circuit when the pin is withdrawn are difficult to completely solve, resulting in insufficient seismic resistance of the electrical connector and insufficient reliability when used in the field, which may cause electronic equipment failure; second, the pin end component, namely the plug (also called the male end), and the socket end component, namely the socket (also called the female end), need to be designed separately, with more parts, time-consuming and labor-intensive processing, and high cost, and the pin end and the socket end need to be crimped or welded with wires (such as cable cores) separately, which is time-consuming and labor-intensive when used, reducing the connection speed and efficiency. Summary of the invention

[0004] The object of the present invention is to provide a spring pressure quick-lock type electrical connector with good shock resistance and high connection efficiency in order to solve the above problems.

[0005] The present invention achieves the above-mentioned purpose through the following technical solutions:

[0006] A spring pressure quick-lock electrical connector, comprising an insulating shell, an insulating pressure cap, a conductive contact, a slider, a coil spring and a nut, wherein the axial direction of the coil spring is set to be vertical, the shell is provided with a vertical shell through hole, the middle upper section and the lower section of the shell through hole are respectively a large-diameter shell through hole and a small-diameter shell through hole, the aperture of the large-diameter shell through hole is larger than the aperture of the small-diameter shell through hole, the upper hole wall of the large-diameter shell through hole is provided with a crimping through hole with a transverse axial direction for inserting a wire, the middle and lower sections of the pressure cap are a pressure cap cylinder with an opening at the lower end, the symmetrical two side cylinder walls of the lower section of the pressure cap cylinder are provided with transverse slider through holes for the slider to pass through, the symmetrical two side cylinder walls of the pressure cap cylinder are provided with transverse wire through holes for the wire to pass through at a position above the slider through hole, the transverse width of the wire through hole is smaller than the transverse width of the slider through hole, the pressure cap cylinder is placed in the large-diameter shell through hole and the upper section of the pressure cap is placed above the shell, the contact comprises mutually connected and axial The crimping column and the threaded column of the upper and lower sections are vertical, and the middle and upper sections of the crimping column are provided with a transverse sliding through hole, and a transverse positioning plate is provided between the crimping column and the threaded column, and the transverse outer diameter of the crimping column is smaller than the transverse outer diameter of the positioning plate and larger than the transverse outer diameter of the threaded column. The crimping column and the positioning plate are both placed in the large-diameter shell through hole, and the upper section of the crimping column is placed in the pressing cap cylinder body, and the transverse sliding block passes through the sliding block through hole and the sliding through hole at the same time and can move vertically in the sliding through hole and be placed in the large-diameter shell through hole, and the positioning plate is placed on the step between the large-diameter shell through hole and the small-diameter shell through hole, and the coil spring is placed between the lower end of the pressing cap cylinder body and the upper end of the positioning plate and at the same time between the outer wall of the crimping column and the hole wall of the large-diameter shell through hole, and the lower end of the threaded column passes through the small-diameter shell through hole from top to bottom and is connected to the nut through its own external thread, and the lower end of the threaded column is provided with a welding countersunk hole for welding the wire.

[0007] Preferably, in order to facilitate installation of the electrical connector on a mounting panel of other equipment, a downwardly protruding housing boss is provided at the lower end of the housing and the small-diameter housing through hole passes through the housing boss.

[0008] Preferably, in order to prevent the nut from damaging the mounting panel when installing the electrical connector and to facilitate isolation of conductive parts such as the nut, the spring pressure quick-lock electrical connector also includes an insulating gasket, which is provided with a gasket through hole. The insulating gasket is sleeved on the threaded column through the gasket through hole and is located between the shell boss and the nut.

[0009] Preferably, in order to prevent the lower end of the shell from damaging the mounting panel and to form a good sealing effect, an annular sealing ring groove is provided on the lower end surface of the shell at the outer periphery of the shell boss, and a sealing ring is installed in the sealing ring groove.

[0010] Preferably, in order to prevent relative rotation between the contact piece and the shell, an anti-rotation column is provided on the contact piece between the positioning plate and the threaded column, and at least one outer wall plane is provided on the outer wall of the anti-rotation column, and at least one hole wall plane is provided on the hole wall of the small-diameter shell through hole, and the outer wall plane and the hole wall plane are in contact with each other.

[0011] Preferably, in order to facilitate the operator to press the pressing cap by hand, a concave arc-shaped pressing groove is provided in the middle of the upper end surface of the pressing cap.

[0012] Preferably, in order to limit the position of the slider and facilitate the installation of the slider, a downwardly protruding wave-shaped boss is provided in the middle section of the lower surface of the slider, and the end surfaces of both ends of the slider are outwardly convex arc surfaces.

[0013] Preferably, in order to improve the strength of the insulating component and improve the conductivity of the conductor component, the shell is a high-temperature resistant engineering plastic shell, the pressure cap is a high-temperature resistant engineering plastic pressure cap, the contact is a copper alloy gold-plated contact, and the slider is a conductor or an insulator.

[0014] Preferably, in order to facilitate the connection of multiple pairs of wires, one of the housings, one of the pressure caps, one of the contacts, one of the sliders, one of the coil springs and one of the nut form a crimping unit, and the spring pressure quick-lock electrical connector includes one or more of the crimping units.

[0015] Preferably, in order to increase the strength of the electrical connector and facilitate operation, the spring pressure quick-lock electrical connector includes a plurality of the crimping units, and the shells of the plurality of the crimping units arranged laterally are interconnected and integrally formed.

[0016] The beneficial effects of the present invention are:

[0017] The present invention integrates an insulating housing, an insulating pressure cap, a conductive contact piece, a slider, a coil spring and a nut, and utilizes the elasticity of the coil spring to push the slider to tightly press the wire onto the contact piece to achieve stable crimping, and welds another wire onto the contact piece, thereby realizing a quick connection between the two wires. Moreover, it is only necessary to press the pressure cap downward, insert the wire into the crimping through hole, and then release the pressure cap to allow it to pop up, so as to realize a quick locking connection. To unlock, it is only necessary to press the pressure cap and pull out the wire, and there is no need to use a traditional pin and jack connection. The connection is stable, the operation is simple, the use is quick, the application is flexible, and it is particularly suitable for use in scenarios with high mobility. The specific advantages are as follows:

[0018] 1. The present invention combines the functions of the male and female ends of the traditional electrical connector, and the purpose of electrical connection can be achieved by using an integral product, thereby improving the portability of the electrical connector. At the same time, there is no need to consider the problem that the male and female ends must be matched and plugged in, and the risk of electrical connectors not being able to mate with each other is eliminated, further improving the adaptability in high-mobility scenarios.

[0019] 2. From an economic perspective, the present invention does not need to separately design the male and female ends of the electrical connector into two products, which reduces the number of product parts and shortens the processing and assembly cycles. In addition, the present invention only requires welding one end, saving time, labor and consumables, and improving economic efficiency.

[0020] 3. The structure of the present invention is simple. The wires at both ends of the device are connected by contacts. There is no need to plug pins and sockets together, so there are no factors that reduce reliability, such as contact wear, unqualified plug-in and pull-out force, and pin withdrawal. In addition, the crimping force of the present invention comes from a controllable high-elasticity coil spring, which is much greater than the plug-in and pull-out force of conventional pins and sockets. After being pressed, the electrical connection reliability can be greatly improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is one of the half-section front views of the spring pressure quick-lock type electrical connector of the present invention, in which the pressure cap is in a natural state;

[0022] Figure 2 It is a half-section front view of the housing of the spring pressure quick-lock type electrical connector of the present invention;

[0023] Figure 3 is a three-dimensional diagram of the pressing cap of the spring pressure quick-locking electrical connector of the present invention;

[0024] Figure 4 is a three-dimensional diagram of the contact piece of the spring pressure quick-lock type electrical connector of the present invention;

[0025] Figure 5 is a stereoscopic diagram of a slider of the spring pressure quick-lock type electrical connector of the present invention;

[0026] Figure 6 is a three-dimensional diagram of a gasket of a spring pressure quick-lock type electrical connector according to the present invention;

[0027] Figure 7 This is the second half-section front view of the spring pressure quick-lock electrical connector of the present invention, in which the pressure cap is in a pressed state. DETAILED DESCRIPTION

[0028] The present invention will be further described below in conjunction with the accompanying drawings:

[0029] like Figure 1-Figure 6As shown, the spring pressure quick-lock electrical connector of the present invention comprises an insulating housing 1, an insulating pressure cap 2, a conductive contact piece 3, a slider 4, a coil spring 5 and a nut 8. The axial direction of the coil spring 5 is set to be vertical. The housing 1 is provided with a vertical housing through hole. The upper and lower sections of the housing through hole are respectively a large-diameter housing through hole 12 and a small-diameter housing through hole 16. The aperture of the large-diameter housing through hole 12 is larger than the aperture of the small-diameter housing through hole 16. The upper hole wall of the large-diameter housing through hole 12 is provided with a pressure hole with a horizontal axial direction and used for inserting a wire. The through hole 11, the middle and lower section of the pressure cap 2 is a pressure cap cylinder 22 with an opening at the lower end, and the symmetrical two side walls of the lower section of the pressure cap cylinder 22 are provided with a horizontal slider through hole 24 for the slider 4 to pass through, and the symmetrical two side walls of the pressure cap cylinder 22 are provided with a horizontal wire through hole 23 for the wire to pass through at a position above the slider through hole 24, and the horizontal width of the wire through hole 23 is smaller than the horizontal width of the slider through hole 24, the pressure cap cylinder 22 is placed in the large diameter shell through hole 12 and the upper section of the pressure cap 2 is placed above the shell 1, and the contact member 3 includes mutually The crimping column 31 of the upper section and the threaded column 35 of the lower section are connected and axially vertical, the middle and upper section of the crimping column 31 is provided with a transverse sliding through hole 32, a transverse positioning plate 33 is provided between the crimping column 31 and the threaded column 35, the transverse outer diameter of the crimping column 31 is smaller than the transverse outer diameter of the positioning plate 33 and larger than the transverse outer diameter of the threaded column 35, the crimping column 31 and the positioning plate 33 are both placed in the large-diameter shell through hole 12, the upper section of the crimping column 31 is placed in the pressure cap cylinder 22, the transverse slider 4 passes through the slider through hole 24 and the sliding through hole 32 at the same time and It is able to move vertically in the sliding through hole 32 and be placed in the large diameter shell through hole 12. The positioning plate 33 is placed on the step between the large diameter shell through hole 12 and the small diameter shell through hole 16. The coil spring 5 is placed between the lower end of the pressure cap cylinder 22 and the upper end of the positioning plate 33 and at the same time between the outer wall of the crimping column 31 and the hole wall of the large diameter shell through hole 12. The lower end of the threaded column 35 passes through the small diameter shell through hole 16 from top to bottom and is connected to the nut 8 through its own external thread. The lower end of the threaded column 35 is provided with a welding countersunk hole 36 for welding the wire.

[0030] like Figure 1-Figure 6 As shown, the present invention also discloses the following multiple more optimized specific structures. According to actual needs, the above structure can be superimposed and combined with one or more of the following structures to form a more optimized technical solution.

[0031] In order to facilitate installation of the electrical connector on a mounting panel (not shown) of other equipment, a downwardly protruding housing protrusion 15 is provided at the lower end of the housing 1 and a small-diameter housing through hole 16 passes through the housing protrusion 15 .

[0032] In order to prevent the nut from damaging the installation panel when installing the electrical connector and to facilitate isolation of conductive parts such as the nut 8, the spring pressure quick-lock electrical connector also includes an insulating gasket 7, which is provided with one or more (two in the figure) gasket through holes 71. The insulating gasket 7 is mounted on the threaded column 35 through the gasket through hole 71 and is located between the shell boss 15 and the nut 8.

[0033] In order to prevent the lower end of the housing 1 from damaging the mounting panel and to achieve a good sealing effect, an annular sealing ring groove 14 is provided on the lower end surface of the housing 1 at the outer periphery of the housing boss 15, and a sealing ring 6 is installed in the sealing ring groove 14.

[0034] In order to prevent relative rotation between the contact member 3 and the housing 1, an anti-rotation column 34 is provided on the contact member 3 between the positioning plate 33 and the threaded column 35. The outer wall of the anti-rotation column 34 is provided with at least one outer wall plane, and the hole wall of the small-diameter housing through hole 16 is provided with at least one hole wall plane 13, and the outer wall plane and the hole wall plane 13 are in contact with each other.

[0035] In order to facilitate the operator to press the pressing cap 2 by hand, a concave arc-shaped pressing groove 21 is provided in the middle of the upper end surface of the pressing cap 2 .

[0036] In order to limit the position of the slider 4 and facilitate the installation of the slider 4, a downwardly protruding wave-shaped boss 41 is provided in the middle section of the lower surface of the slider 4, and the end surfaces of both ends of the slider 4 are outwardly convex arc surfaces 42; Description: Figure 5 The slider 4 is a stereoscopic upward viewing angle.

[0037] In order to improve the strength of the insulating parts and improve the conductivity of the conductor parts, the shell 1 is a high-temperature resistant engineering plastic shell, the pressure cap 2 is a high-temperature resistant engineering plastic pressure cap, the contact 3 is a copper alloy gold-plated contact, and the slider 4 is a conductor or an insulator, preferably a conductor, depending on the specific needs.

[0038] In order to facilitate the connection of multiple pairs of wires, a housing 1, a pressure cap 2, a contact piece 3, a slider 4, a coil spring 5 and a nut 8 form a crimping unit. The spring pressure quick-lock electrical connector includes one or more of the crimping units, two crimping units in this example.

[0039] In order to increase the strength of the electrical connector and facilitate operation, the spring pressure quick-lock electrical connector includes a plurality of the crimping units, and the shells 1 of the plurality of the crimping units arranged laterally are interconnected and formed as one piece; at the same time, the gaskets 7 of the plurality of the crimping units are interconnected and formed as one piece.

[0040] like Figure 1-Figure 7 As shown, Figure 1 and Figure 7The spring pressure quick-lock electrical connector is composed of two crimping units, which can realize two-input and two-output electrical connection. In actual application, it can also be one or more than two. When in use, first unscrew the nut 8, remove the flat washer (not marked in the figure), the spring washer (not marked in the figure) and the gasket 7, find one of the installation panels of the module to be connected, and pass the stud 35 through the installation hole on the installation panel until the installation panel and the lower end surface of the shell 1 are in contact. At this time, the interface sealing is achieved by squeezing the installation panel and the sealing ring 6, and then the gasket 7, flat washer, spring washer and nut 8 are installed according to the original path. In this way, the gasket 7 can isolate the flat washer and the installation panel to avoid direct force compression between the metals and damage to the surface of the installation panel. Finally, the wires in the connecting cable of the module are welded to the welding cup 36. If the module to be connected does not have an installation panel, there is no need to unscrew the nut 8, and the connecting cable of the module can be directly welded to the welding countersunk hole 36.

[0041] Find the wire connector of the connecting cable of another module to be connected, hold it with one hand, then hold the shell 1 with the other hand and use the thumb to overcome the elastic force of the coil spring 5 to press the pressure cap 2 downward until the center of the crimping through hole 11 and the center of the arc segment of the wire through hole 23 are roughly on the same axis, the crimping through hole 11 of the shell 1, the wire through hole 23 of the pressure cap 2 and the sliding through hole 32 of the contact piece 3 form a combined through hole for connecting the wire, and the wire connector of the connecting cable is inserted into the combined through hole but not exceeding the crimping through hole 11 on the opposite side of the shell 1. At this time, the slider 4 is below the wire connector, and the upper end hole wall of the sliding through hole 32 is above the wire connector. Release the thumb, and the pressure cap 2 moves upward under the elastic force of the coil spring 5, so that the slider 4 is squeezed upward, and the wire connector is tightly clamped between the slider 4 and the upper end hole wall of the sliding through hole 32, so that the two modules to be connected are quickly connected, and the electrical signal transmission between the two modules is realized through the contact piece 3. If the connection needs to be disconnected, it is only necessary to press the pressure cap 2 to loosen the wire connector between the slider 4 and the upper end hole wall of the sliding through hole 32, and then take out the wire connector to achieve quick separation. The whole operation process is simple, fast, efficient and reliable.

[0042] The above embodiments are only preferred embodiments of the present invention and are not limitations of the technical solutions of the present invention. Any technical solution that can be implemented on the basis of the above embodiments without creative work should be deemed to fall within the scope of protection of the patent of the present invention.

Claims

1. A spring pressure quick lock type electrical connector, characterized in that: The invention comprises an insulating shell, an insulating pressure cap, a conductive contact piece, a slider, a coil spring and a nut, wherein the axial direction of the coil spring is set to be vertical, the shell is provided with a vertical shell through hole, the middle upper section and the lower section of the shell through hole are respectively a large diameter shell through hole and a small diameter shell through hole, the aperture of the large diameter shell through hole is larger than the aperture of the small diameter shell through hole, a crimping through hole with a transverse axial direction and used for inserting a wire is provided on the upper hole wall of the large diameter shell through hole, the middle and lower sections of the pressure cap are a pressure cap cylinder with an opening at the lower end, transverse slider through holes for the slider to pass through are provided on the symmetrical two side cylinder walls of the lower section of the pressure cap cylinder, transverse wire through holes for the wire to pass through are provided on the symmetrical two side cylinder walls of the pressure cap cylinder at a position above the slider through hole, the transverse width of the wire through hole is smaller than the transverse width of the slider through hole, the pressure cap cylinder is placed in the large diameter shell through hole and the upper section of the pressure cap is placed above the shell, and the contact piece comprises upper sections which are connected to each other and have a vertical axial direction. The threaded column of the embodiment of claim 1, wherein the middle and upper sections of the crimping column are provided with a transverse sliding through hole, and a transverse positioning plate is provided between the crimping column and the threaded column, the transverse outer diameter of the crimping column is smaller than the transverse outer diameter of the positioning plate and larger than the transverse outer diameter of the threaded column, and the crimping column and the positioning plate are both placed in the large-diameter shell through hole, and the upper section of the crimping column is placed in the pressing cap cylinder body, the transverse sliding block simultaneously passes through the sliding through hole and the sliding through hole and can move vertically in the sliding through hole and be placed in the large-diameter shell through hole, the positioning plate is placed on a step between the large-diameter shell through hole and the small-diameter shell through hole, the coil spring is placed between the lower end of the pressing cap cylinder body and the upper end of the positioning plate and at the same time between the outer wall of the crimping column and the hole wall of the large-diameter shell through hole, the lower end of the threaded column passes through the small-diameter shell through hole from top to bottom and is connected to the nut through its own external thread, and the lower end of the threaded column is provided with a welding countersunk hole for welding the wire.

2. The spring pressure quick lock electrical connector according to claim 1, characterized in that: A downwardly protruding shell boss is provided at the lower end of the shell, and the small-diameter shell through hole passes through the shell boss.

3. The spring pressure quick lock electrical connector according to claim 2, characterized in that: The spring pressure quick-lock type electrical connector also includes an insulating gasket, which is provided with a gasket through hole. The insulating gasket is sleeved on the threaded column through the gasket through the gasket through the hole and is located between the housing boss and the nut.

4. The spring pressure quick lock electrical connector according to claim 3, characterized in that: An annular sealing ring groove is provided on the lower end surface of the housing at a position located at the outer periphery of the housing boss, and a sealing ring is installed in the sealing ring groove.

5. The spring pressure quick lock electrical connector according to any one of claims 1 to 4, characterized in that: An anti-rotation column is provided on the contact piece between the positioning plate and the threaded column, and at least one outer wall plane is provided on the outer wall of the anti-rotation column. At least one hole wall plane is provided on the hole wall of the small-diameter shell through hole, and the outer wall plane and the hole wall plane are in contact with each other.

6. The spring pressure quick lock electrical connector according to any one of claims 1 to 4, characterized in that: A concave arc-shaped pressing groove is provided in the middle of the upper end surface of the pressing cap.

7. The spring pressure quick lock electrical connector according to any one of claims 1 to 4, characterized in that: A downwardly protruding wave-shaped boss is provided in the middle section of the lower surface of the slider, and the end surfaces at both ends of the slider are outwardly convex arc surfaces.

8. The spring pressure quick lock electrical connector according to any one of claims 1 to 4, characterized in that: A shell, a pressing cap, a contact piece, a slider, a coil spring and a nut form a crimping unit, and the spring pressure quick-lock electrical connector includes one or more crimping units.

9. The spring pressure quick lock type electrical connector according to claim 8, characterized in that: The spring pressure quick-lock type electrical connector comprises a plurality of the crimping units, and the shells of the plurality of the crimping units arranged transversely are interconnected and integrally formed.

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