Vortex spring contact element and electric connector

Abstract

The invention discloses a vortex spring contact and an electric connector. The center of a plastic hole sleeve is through, and the middle position of the top of the plastic hole sleeve is provided with a male head through hole for a contact male head to pass through; the top of the plastic hole sleeve is concaved inwards to form a vortex spring limiting groove for installing a copper alloy vortex spring, and the top of the copper alloy vortex spring is located at the bottom of the male head through hole. The jack base body and the plastic hole sleeve are installed in an internal thread mode. The lower end of the contact male head is provided with a conical contact cambered surface, and the conical contact cambered surface is fitted with a deformation curve of the top of the copper alloy vortex spring, so that the copper alloy vortex spring is in multi-point contact with the conical contact cambered surface after deformation. According to the invention, the structural characteristics of the vortex spring are utilized, the copper alloy vortex spring is used as an elastic conductive part, and the vortex spring contact element which is low in insertion depth requirement, low in pinhole matching precision requirement, low in temperature rise, resistant to abrasion and capable of effectively resisting transient interruption and the small-sized light-weight electric connector which realizes manual battery replacement in a limited space by using the vortex spring contact element are researched and developed.

Description

Technical Field

[0001] The present invention relates to the technical field of electrical connectors, and more specifically, to a vortex spring contact and an electrical connector that utilizes the vortex spring contact to achieve stable electrical conduction, which are suitable for manual battery replacement scenarios in the flat space of small speedboats. Background Art

[0002] In the manual battery replacement scenario in the flat space of a small speedboat, the current common contact methods of electrical connectors have high insertion depth requirements, high pinhole matching accuracy requirements, risks of instantaneous failure under vibration conditions, temperature rise, and obvious wear and tear.

[0003] Therefore, there is an urgent need to provide a small, lightweight, and low-cost connector for manual battery replacement in a limited space. Summary of the Invention

[0004] In order to solve the technical problems existing in the existing contact mode of the above-mentioned electrical connector, the purpose of the present invention is to provide a vortex spring contact and an electrical connector. By utilizing the structural characteristics of the vortex spring and using the copper alloy vortex spring as an elastic conductive part, a vortex spring contact with low insertion depth requirements, low pinhole matching accuracy requirements, low temperature rise, wear resistance and effective resistance to instantaneous interruption is developed, as well as a small, lightweight and low-cost electrical connector that uses the vortex spring contact to realize manual power replacement in a limited space.

[0005] The present invention solves the above problems through the following technical solutions:

[0006] A vortex spring contact, comprising: a female contact head and a male contact head;

[0007] The female contact is provided with a socket base, a copper alloy vortex spring and a plastic hole sleeve. The plastic hole sleeve is used to assemble the socket base and the copper alloy vortex spring. The center of the plastic hole sleeve is through-through, and a male head through-hole for the male contact head to pass through is provided at the middle position of its top, so that one end of the male contact head is inserted into the plastic hole sleeve through the male head through-hole; a stepped hole is formed in the plastic hole sleeve, and the stepped hole of the plastic hole sleeve is concave toward the top to form a vortex spring limiting groove for installing the copper alloy vortex spring, and the top of the copper alloy vortex spring is located at the bottom of the male head through-hole, so that the contact When the male contact is inserted into the plastic hole sleeve through the male head through hole, it contacts and cooperates with the top of the copper alloy vortex spring; an internal hole sleeve thread is formed in the bottom end of the step hole of the plastic hole sleeve, which is used to cooperate with the external hole sleeve thread outside the jack base, so that the jack base can be inserted into the plastic hole sleeve from the bottom end for threaded installation; the lower end of the male contact has a conical contact arc surface, and the conical contact arc surface of the male contact fits the deformation curve of the top of the copper alloy vortex spring, so that the copper alloy vortex spring forms multi-point contact with the conical contact arc surface after deformation.

[0008] As a further improvement of the present invention, the jack base is inserted into one end of the plastic hole sleeve, and a blind hole with a depth greater than the insertion depth of the contact male head is provided at the end connected to the plastic hole sleeve to avoid the contact male head.

[0009] As a further improvement of the present invention, a vortex spring installation step surface is provided on the inner wall of the blind hole near the top. When the jack base is installed in the plastic hole sleeve, the copper alloy vortex spring is located in the vortex spring limit groove, and the copper alloy vortex spring is respectively against the jack base and the plastic hole sleeve on the left and right.

[0010] As a further improvement of the present invention, when the jack base is installed in the plastic hole sleeve, the upper end of the jack base abuts against the upper end surface of the vortex spring limiting groove.

[0011] As a further improvement of the present invention, the inner wall of the blind hole is configured to be conical near the bottom end.

[0012] As a further improvement of the present invention, the copper alloy vortex spring is provided with a connected mounting structure and an elastic structure. The mounting structure is arranged in the vortex spring limiting groove and is limited by the vortex spring mounting step surface; the elastic structure is installed at the lower end of the blind hole and is located at the bottom of the male through hole.

[0013] At the same time, the present invention also solves the above problems through the following technical solutions:

[0014] An electrical connector includes the vortex spring contact piece described above.

[0015] As a further improvement of the present invention, the electrical connector includes a plug end and a socket end, the female contact head is limited at the plug end, and the male contact head is limited at the socket end, so that the connection between the female contact head and the male contact head is achieved by plugging the plug end and the socket end into each other.

[0016] As a further improvement of the present invention, the plug end includes: a front-hole insulator, a rear-hole insulator and a vortex spring contact piece, and the two ends of the vortex spring contact piece are respectively installed in the power holes of the front-hole insulator and the rear-hole insulator, and the front-hole insulator and the rear-hole insulator are assembled by snap-fitting to limit the installation of the vortex spring contact piece.

[0017] As a further improvement of the present invention, the socket end includes: a socket end pin front insulator, a socket end hole rear insulator and a contact male head, and the two ends of the contact male head are respectively inserted into the power holes of the socket end pin front insulator and the socket end hole rear insulator, and the socket end pin front insulator and the socket end hole rear insulator are assembled by snap-fitting to limit the installation of the contact male head.

[0018] Compared with the prior art, the present invention has the following advantages and beneficial effects:

[0019] (1) The present invention utilizes a copper alloy vortex spring that deforms in the same direction as the male contact plug and rebounds when the male contact plug retracts. Therefore, the vortex spring contact can effectively reduce the required insertion depth. Since the copper alloy vortex spring generates a rebound force opposite to the insertion direction of the male contact plug after deformation, it can provide continuous compensating force to maintain stable contact under vibration conditions. Therefore, the vortex spring contact can effectively reduce the risk of instantaneous failure.

[0020] (2) The copper alloy vortex spring has a high degree of freedom in the socket base and can maintain stable contact when the male head of the contact piece deflects and shakes. Therefore, the vortex spring contact piece can effectively reduce the pinhole matching accuracy requirements.

[0021] (3) The copper alloy vortex spring has many contact points with the socket base and the arc-shaped contact surface of the contact male head, and the upper limit of the cross-sectional area of ​​the spring wire is high, which can simultaneously reduce the contact resistance and the cross-sectional resistance of the spring wire. Therefore, the vortex spring contact assembly can effectively reduce the temperature rise.

[0022] (4) The copper alloy vortex spring, the socket base, and the arc-shaped contact surface of the contact male head avoid friction in the insertion direction during the insertion and removal process, so the vortex spring contact effectively reduces contact wear. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a schematic diagram of assembling a contact female connector of a vortex spring contact of the present invention;

[0024] Figure 2 It is a structural schematic diagram of the socket base of the present invention;

[0025] Figure 3 Schematic diagram of the structure of the copper alloy vortex spring of the present invention;

[0026] Figure 4 This is a schematic structural diagram of the plastic hole sleeve of the present invention;

[0027] Figure 5 This is a schematic structural diagram of the male contact of the present invention;

[0028] Figure 6 Schematic diagram of the coordination of the vortex spring contact member in the working state of the present invention;

[0029] Figure 7 This is an exploded schematic diagram of the plug end of the present invention;

[0030] Figure 8 This is a schematic diagram of the assembly of the plug end of the present invention;

[0031] Figure 9 This is an exploded schematic diagram of the socket end of the present invention;

[0032] Figure 10 It is a structural schematic diagram of the socket end of the present invention.

[0033] Figure numerals: 10, jack base; 11, hole front insulator; 12, boundary gasket; 13, fixing piece; 14, signal hole waterproof rubber plug; 15, hole back insulator; 16, power hole waterproof rubber plug; 17, tail cover; 18, plastic hole sleeve; 19, copper alloy vortex spring; 20, contact male head; 21, socket end pin front insulator; 22, socket end fixing piece; 23, signal pin waterproof rubber plug; 24, socket end tail cover; 25, socket end Waterproof rubber plug for power line; 26. Insulator behind the socket end hole; 27. Socket end cover; 101. Blind hole; 102. Step surface for vortex spring installation; 103. External thread of hole sleeve; 104. Natural state installation structure; 105. Multi-point contact; 106. Limiting groove for vortex spring; 107. Internal thread of hole sleeve; 191. Natural state elastic structure; 192. Working state installation structure; 193. Working state elastic structure; 194. Conical contact arc surface. DETAILED DESCRIPTION

[0034] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0035] The present invention utilizes the structural characteristics of the vortex spring and uses the copper alloy vortex spring as an elastic conductive part to develop a vortex spring contact with low insertion depth requirements, low pinhole matching accuracy requirements, low temperature rise, wear resistance and effective resistance to instantaneous interruption, as well as a small, lightweight and low-cost electrical connector that uses the vortex spring contact to achieve non-fully automatic power replacement in a limited space.

[0036] Example 1:

[0037] Refer to the attached Figure 1-6 A vortex spring contact comprises two parts: a female contact and a male contact.

[0038] The female contact head is provided with a socket base 10, a copper alloy spiral spring 19 and a plastic hole sleeve 18, and the assembly relationship thereof is as follows: Figure 1The plastic hole sleeve 18 is used to assemble the combined jack base 10 and the copper alloy vortex spring 19. The center of the plastic hole sleeve 18 is through-hole, and a male head through-hole for the contact male head to pass through is provided at the middle position of its top, so that one end of the contact male head can be inserted into the plastic hole sleeve 18 through the male head through-hole; a stepped hole is formed in the plastic hole sleeve 18, and the stepped hole of the plastic hole sleeve 18 is concave at the top to form a vortex spring limiting groove 106, so that the copper alloy vortex spring 19 can be installed through the vortex spring limiting groove 106, and the top of the copper alloy vortex spring 19 is located at the bottom of the male head through-hole, so that the contact male head can contact and cooperate with the copper alloy vortex spring 19 when passing through the male head through-hole and inserted into the plastic hole sleeve 18. An internal hole sleeve thread 107 is formed at the bottom end of the stepped hole of the plastic hole sleeve 18, which is used to cooperate with the external hole sleeve thread 103 on the outside of the jack base 10, so that the jack base 10 can be inserted into the plastic hole sleeve 18 from the bottom end for threaded installation.

[0039] like Figure 2 The jack body 10 has a stepped shaft shape and is inserted into one end of the plastic sleeve 18. A blind hole 101, deeper than the insertion depth of the male contact head, is provided at the end that connects to the plastic sleeve 18. A vortex spring mounting stepped surface 102 is provided on the inner wall of the blind hole near the top, and a sleeve external thread 103 is provided on the outer circumference of the lower portion of the jack body. When the jack body 10 is installed in the plastic sleeve 18, the upper end of the jack body 10 abuts against the upper end surface of the vortex spring retaining groove 106, and the copper alloy vortex spring 19 is located in the vortex spring retaining groove 106, with the left and right sides respectively abutting against the jack body 10 and the plastic sleeve 18.

[0040] Furthermore, the inner wall of the blind hole 101 is configured to be tapered near the bottom. Figure 5 The lower end of the male contact has a tapered contact arc surface 194 so that the two can fit together.

[0041] The copper alloy vortex spring 19 is provided with a connected mounting structure and an elastic structure, so that the copper alloy vortex spring 19 can be installed in the vortex spring limiting groove 106 through the mounting structure. Specifically, a mounting hole can be provided in the vortex spring limiting groove 106, so that a hook-type mounting structure can be hung in the mounting hole to install the copper alloy vortex spring 19; in addition, when the socket base 10 is installed in the plastic hole sleeve 18, the vortex spring mounting step surface 102 can block the lower part of the vortex spring limiting groove 106, so as to form an opening smaller than the radius of the copper alloy vortex spring 19, and one end of the copper alloy vortex spring 19 is installed and fixed through the opening, and the mounting structure of the copper alloy vortex spring is limited to the space between the vortex spring limiting structure of the vortex spring limiting groove 106 and the vortex spring mounting step surface of the socket base 10; of course, it can also be installed in other ways, and this application does not limit this. Its natural state and working state appearance are shown as follows. Figure 3, the natural state mounting structure 104 and the natural state elastic structure 191, at this time the elastic structure of the natural state elastic structure 191 is not stretched; the working state mounting structure 192 and the working state elastic structure 193, at this time the elastic structure of the working state elastic structure 193 is stretched to abut against the bottom end of the male head of the contact piece, providing it with an upward rebound force.

[0042] When the vortex spring contact is working, the male end of the contact is inserted from the upper end into the male end through hole at the upper end of the female end of the contact, and the conical contact arc surface of the male end of the contact contacts the smallest circle in the center of the copper alloy vortex spring in its natural state. Then the male end of the contact continues to be inserted, and the copper alloy vortex spring is deformed. The conical contact arc surface of the male end of the contact fits the deformation curve of the copper alloy vortex spring, so the copper alloy vortex spring can form multi-point contact 105 with it after deformation; at the same time, the copper alloy vortex spring generates a rebound force opposite to the insertion direction of the male end of the contact after deformation, providing continuous compensation force for the contact between the male end of the contact and the female end of the contact, so that the vortex spring contact can maintain stable and effective electrical conduction under vibration conditions. The working state of the vortex spring contact is as follows: Figure 6 .

[0043] Because the copper alloy vortex spring deforms in the same direction as the male contact inserts and rebounds when the male contact retracts, vortex spring contacts can effectively reduce the required insertion depth. Since the copper alloy vortex spring generates a rebound force opposite to the insertion direction of the male contact, it can provide continuous compensating force to maintain stable contact under vibration conditions, effectively reducing the risk of transient failure.

[0044] Since the copper alloy vortex spring has a high degree of freedom in the socket base, it can maintain stable contact when the male head of the contact piece deflects and shakes, so the vortex spring contact piece can effectively reduce the pinhole matching accuracy requirements.

[0045] Since the copper alloy vortex spring has many contact points with the socket base and the arc-shaped contact surface of the contact male head and the cross-sectional area upper limit of the spring wire is high, it can reduce the contact resistance and the cross-sectional resistance of the spring wire at the same time, so the vortex spring contact assembly can effectively reduce the temperature rise.

[0046] Since the copper alloy vortex spring, the socket base and the arc-shaped contact surface of the contact male head avoid friction in the insertion direction during the insertion and removal process, the vortex spring contact effectively reduces contact wear.

[0047] Example 2:

[0048] An electrical connector using vortex spring contacts is configured as a non-floating structure to achieve a non-fully automatic battery replacement function. The main structure is made of plastic material to achieve small size, light weight and low cost.

[0049] The electrical connector is divided into two parts: a plug end and a socket end for plugging into each other;

[0050] Refer to the attached Figure 7-10 The plug end is composed of a front hole insulator 11, a boundary gasket 12, a fixing part 13, a signal hole waterproof rubber plug 14, a rear hole insulator 15, a power hole waterproof rubber plug 16, a tail cover 17 and a vortex spring contact. Among them, a boundary gasket 12 is embedded in the annular groove at the rear end of the hole front insulator 11 with an interference fit, so that the rear end of the plug end can be sealed when connected to other components; the fixing part 13 and the signal hole waterproof rubber plug 14 are embedded in the middle hole in the middle of the front end of the rear hole insulator 15, so that the signal hole waterproof rubber plug 14 can be inserted into ...1. Insert the signal cable to limit and waterproof; the power hole waterproof rubber plug 16 is installed in the tail tube of the rear insulator 15 and is fixed to the rear tail tube of the rear insulator 15 by the tail cover 17 through a hook for limiting the position, and the plastic hole sleeve 18, copper alloy vortex spring 19 and jack base 10 are installed in the power hole of the front insulator 11 as vortex spring contacts. The front insulator 11 is assembled with the rear insulator 15 by a snap so that the other end of the vortex spring contact is installed in the power hole of the rear insulator 15 to limit the vortex spring contact in the plug end.

[0051] The socket end is composed of a socket end pin front insulator 21, a socket end fixing part 22, a signal pin waterproof rubber plug 23, a socket end tail cover 24, a socket end power line waterproof rubber plug 25, a socket end hole rear insulator 26, a socket end blind cover 27 and a contact male head 20.

[0052] The socket end fixing part 22 and the signal pin waterproof rubber plug 23 are installed in the middle hole of the socket end hole rear insulator 26, so that the signal cable can be inserted from the outside of the socket end pin front insulator 21 for limiting and waterproofing; the socket end power line waterproof rubber plug 25 is installed in the tail tubes on both sides of the socket end hole rear insulator 26 and is fixed by the socket end tail cover 24 and the tail tube buckles on both sides of the socket end hole rear insulator 26 for limiting. The socket end blind cover 27 is installed in the mounting hole at the rear end of the socket end hole rear insulator 26 through threaded cooperation, and the contact male head 20 is installed in the power hole of the socket end hole rear insulator 26. The socket end pin front insulator 21 and the socket end hole rear insulator 26 are assembled by buckles so that the other end of the contact male head 20 is installed in the power hole of the socket end pin front insulator 21, so that the contact male head 20 is limited and installed in the socket end.

[0053] The connection and installation of the female contact and the male contact are achieved by plugging the plug end and the socket end into each other.

[0054] Although the present invention is described herein with reference to illustrative embodiments of the present invention, the above embodiments are merely preferred embodiments of the present invention, and the embodiments of the present invention are not limited to the above embodiments. It should be understood that those skilled in the art can design many other modifications and implementations, which will fall within the scope and spirit of the principles disclosed in this application.

Claims

1. A vortex spring contact, characterized in that: include: Female contacts and male contacts; The female contact head is provided with a socket base, a copper alloy vortex spring and a plastic hole sleeve, and the plastic hole sleeve is used to assemble the socket base and the copper alloy vortex spring; The center of the plastic hole sleeve is through-through, and a male head through-hole for the male head of the contact piece to pass through is provided at the middle position of the top thereof, so that one end of the male head of the contact piece is inserted into the plastic hole sleeve through the male head through-hole; A stepped hole is formed in the plastic hole sleeve, and the stepped hole of the plastic hole sleeve is concave at the top to form a vortex spring limiting groove for installing the copper alloy vortex spring, and the top of the copper alloy vortex spring is located at the bottom of the male head through hole, so that the male head of the contact piece is inserted into the plastic hole sleeve through the male head through hole and contacts with the top of the copper alloy vortex spring; The bottom end of the stepped hole of the plastic hole sleeve is formed with a hole sleeve internal thread for matching with the hole sleeve external thread outside the jack base, so that the jack base is inserted into the plastic hole sleeve from the bottom end for threaded installation; The lower end of the contact male head has a conical contact arc surface, which fits the deformation curve of the top of the copper alloy vortex spring so that the copper alloy vortex spring forms multi-point contact with the conical contact arc surface after deformation.

2. A vortex spring contact according to claim 1, characterized in that: The jack base is inserted into one end of the plastic hole sleeve, and the end connected with the plastic hole sleeve is provided with a blind hole with a depth greater than the insertion depth of the contact male head to avoid the contact male head.

3. The vortex spring contact according to claim 2, characterized in that: A vortex spring installation step surface is provided on the inner wall of the blind hole near the top. When the jack base is installed in the plastic hole sleeve, the copper alloy vortex spring is located in the vortex spring limiting groove, and the copper alloy vortex spring is respectively against the jack base and the plastic hole sleeve on the left and right.

4. A vortex spring contact according to claim 3, characterized in that: When the jack base is installed in the plastic hole sleeve, the upper end of the jack base abuts against the upper end surface of the vortex spring limiting groove.

5. The vortex spring contact according to claim 2, characterized in that: The inner wall of the blind hole is configured to be tapered near the bottom end.

6. The vortex spring contact according to claim 2, characterized in that: The copper alloy vortex spring is provided with a connected mounting structure and an elastic structure. The mounting structure is arranged in the vortex spring limiting groove and is limited by the vortex spring mounting step surface; the elastic structure is installed at the lower end of the blind hole and is located at the bottom of the male through hole.

7. An electrical connector, characterized in that: The invention comprises a vortex spring contact piece as described in any one of claims 1 to 6.

8. The electrical connector according to claim 7, characterized in that: The electrical connector includes a plug end and a socket end, the female contact head is limited at the plug end, and the male contact head is limited at the socket end, so that the connection between the female contact head and the male contact head is achieved by plugging the plug end and the socket end into each other.

9. The electrical connector according to claim 8, characterized in that: The plug end includes: a front-hole insulator, a rear-hole insulator and a vortex spring contact piece. The two ends of the vortex spring contact piece are respectively installed in the power holes of the front-hole insulator and the rear-hole insulator. The front-hole insulator and the rear-hole insulator are assembled by snap-fitting to limit the installation of the vortex spring contact piece.

10. The electrical connector according to claim 8, characterized in that: The socket end includes: a socket end pin front insulator, a socket end hole rear insulator and a contact male head. The two ends of the contact male head are respectively installed in the power holes of the socket end pin front insulator and the socket end hole rear insulator. The socket end pin front insulator and the socket end hole rear insulator are assembled by snap fastening to limit the installation of the contact male head.

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