Large-current rotary contact ball connector
By using insulating parts to isolate the ball assembly and the spring in a high-current rotating contact ball connector, the problem of spring burning in a high-current environment is solved, and the reliable operation of the connector and the improvement of the current carrying capacity are achieved.
Patent Information
- Application Number
- CN202422831751.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-20
- Publication Date
- 2025-10-10
- Estimated Expiration
- 2034-11-20
AI Technical Summary
In existing high-current rotating contact ball connectors, the spring is easily burned out in high-current environments, causing the connector to fail.
Insulators are used to insulate the ball assembly from the spring, preventing current from passing through the spring and preventing it from burning in a high current environment.
It effectively protects the spring, ensures the connector works reliably in high current environments, and improves the current carrying capacity and reliability of the connector.
Smart Images
Figure CN223427917U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to an electric connector, especially a large current rotary contact ball connector. BACKGROUND
[0002] As is known, electric connectors are used to realize signal and / or current transmission between active devices, and are widely used in electronic products and other occasions.
[0003] Among them, for the ball connector applied to high (large) current environment, it is mainly composed of a ball, a needle shaft, a needle sleeve, a spring and a needle tube. The needle shaft and the ball are assembled in the needle sleeve, and the needle shaft is exposed from the tail end of the needle sleeve, the ball is exposed from the head end of the needle sleeve, and the head end of the needle sleeve is riveted with a blocking structure to prevent the ball from falling off from the head end of the needle sleeve; the tail end of the needle sleeve is slidably arranged in the needle tube, and the head end of the needle tube is riveted with a limiting structure to prevent the needle sleeve from falling off from the needle tube; the spring is located in the needle tube, and the spring also abuts against the needle shaft and the needle tube. The head end surface of the needle shaft is kept in abutting state with the ball under the action of the spring, and the head end surface of the needle shaft is an inclined surface.
[0004] Because the spring abuts against the needle shaft and the needle tube, the current acting on the ball passes through the spring, which leads to the burning of the spring in the process of passing through high (large) current, thereby causing the failure of the ball connector.
[0005] Therefore, there is an urgent need for a large current rotary contact ball connector to overcome the above-mentioned defects. CONTENT OF THE UTILITY MODEL
[0006] The utility model aims at providing a large current rotary contact ball connector to avoid the burning of the spring in the environment of high (large) current, thereby working reliably.
[0007] In order to achieve the above-mentioned purpose, the large current rotary contact ball connector of the utility model comprises a ball assembly, a conductive seat body, a spring and an insulating piece. The conductive seat body is provided with a receiving cavity penetrating through the first end surface of the conductive seat body; the spring and the ball assembly are sequentially arranged in the receiving cavity along the direction of penetration of the first end surface of the receiving cavity, the spring abuts against the conductive seat body and the ball assembly, the ball assembly can reciprocally slide in the receiving cavity, and the ball assembly is exposed from the first end surface of the conductive seat body; the insulating piece is arranged between the ball assembly and the spring, and the spring is insulated and separated from the ball assembly by means of the insulating piece.
[0008] Compared with the prior art, the ball assembly is insulated from the spring by means of an insulating member, so that the current acting on the ball assembly cannot pass through the spring due to the obstruction of the insulating member, thereby avoiding the spring from being easily burned in an environment where the current is too high (large), thereby ensuring the reliable operation of the high-current rotating contact ball connector of the present invention.
[0009] Preferably, the insulating member is provided with an embedding cavity for embedding and installing the first end of the spring.
[0010] Preferably, the high-current rotary contact ball connector of the present invention further includes an intermediate conductive member slidably disposed in the receiving cavity, wherein the intermediate conductive member abuts between the ball assembly and the insulating member.
[0011] Preferably, the first end face of the intermediate conductive member has an inclined surface inclined relative to the sliding direction of the intermediate conductive member for the ball assembly to abut, and the intermediate conductive member is provided with an embedding cavity penetrating the second end face of the intermediate conductive member for the insulating member to be embedded and installed.
[0012] Preferably, the insulating member includes a cylinder embedded in the embedding cavity and a resisting structure protruding laterally from the cylinder, the resisting structure resists and limits the second end face of the intermediate conductive member, and the first end of the spring is embedded in the cylinder.
[0013] Preferably, the ball assembly includes a ball and a conductive limiter for limiting the movement of the ball, the conductive limiter can be slidably disposed in the receiving cavity, and the first end of the conductive limiter also protrudes from the conductive seat; a limiter cavity is turned on the conductive limiter, and the limiter cavity includes a first limiter cavity and a second limiter cavity in sequence along the direction of the receiving cavity passing through the first end face of the conductive seat, the second limiter cavity passes through the first end face of the conductive limiter, and the cavity diameter of the second limiter cavity is smaller than the cavity diameter of the first limiter cavity, so that the first end of the conductive limiter corresponds to define a blocking structure, the ball is assembled in the first limiter cavity, and the ball also protrudes from the second limiter cavity to the first end face of the conductive limiter, and the blocking structure prevents the ball from falling from the conductive limiter.
[0014] Preferably, the conductive limiting body includes a needle sleeve and a needle shaft, the interior of the needle sleeve forms the limiting cavity, the first limiting cavity also penetrates the needle sleeve in a direction away from the second limiting cavity, the first end of the needle shaft extends into the first limiting cavity and is interfered and fixed with the needle sleeve; the first end face of the needle shaft has an inwardly recessed conical surface that contacts the ball, the second end of the needle shaft protrudes laterally from the first end of the needle shaft, and the second end face of the needle shaft has a spherical surface smaller than a hemisphere.
[0015] Preferably, the receiving cavity is formed on the conductive base by turning.
[0016] Preferably, the accommodating cavity comprises a first accommodating cavity and a second accommodating cavity in sequence along a direction penetrating the first end surface of the conductive seat body, the second accommodating cavity is exposed from the first end surface of the conductive seat body, the cavity diameter of the second accommodating cavity is smaller than the cavity diameter of the first accommodating cavity, so that the conductive seat body correspondingly defines a limiting structure, the ball assembly is located in the first accommodating cavity, the ball assembly also protrudes from the conductive seat body from the second accommodating cavity, the limiting structure blocks the ball assembly from falling off the conductive seat body; the spring is located in the first accommodating cavity.
[0017] Preferably, the first accommodating cavity also penetrates the second end surface of the conductive seat body in a direction away from the second accommodating cavity, a plug is plugged in the first accommodating cavity from the second end surface, the plug is also fixed in interference with the conductive seat body, and the spring abuts both the plug and the ball assembly. BRIEF DESCRIPTION OF DRAWINGS
[0018] Figure 1 It is a perspective structural schematic view of the high-current rotary contact ball connector.
[0019] Figure 2 It is a plan view of the high-current rotary contact ball connector shown in the figure. Figure 1
[0020] Figure 3 It is an internal view along the B-B line in the figure. Figure 2
[0021] Figure 4 It is an internal view of the ball assembly in the figure. Figure 3
[0022] Figure 5 It is an internal view of the needle sleeve in the figure. Figure 4
[0023] Figure 6 It is an internal view of the needle shaft in the figure. Figure 4
[0024] Figure 7 It is an internal view of the conductive seat body in the figure. Figure 2
[0025] Figure 8 It is an internal view of the conductive seat body in the figure. Figure 7 DETAILED DESCRIPTION
[0026] In order to explain the technical content and structural features of the utility model in detail, the following further description is made in combination with the embodiments and the accompanying drawings.
[0027] See also Figures 1 to 3 The high-current rotary contact ball connector 100 of the present invention includes a ball assembly 10, a conductive base 20, a spring 30, and an insulating member 40. The conductive base 20 is provided with a receiving cavity 22 extending through a first end surface 21 thereof. Optionally, as an example, the receiving cavity 22 may be a circular cavity or a regular polygonal cavity to facilitate fabrication and processing of the receiving cavity 22 on the conductive base 20. Obviously, the receiving cavity 22 may also be a cavity of other shapes known in the art, depending on actual needs.
[0028] The spring 30 and the ball assembly 10 are sequentially arranged in the receiving cavity 22 along the direction in which the receiving cavity 22 passes through the first end face 21 (as indicated by arrow A). The spring 30 abuts against both the conductive seat 20 and the ball assembly 10. The ball assembly 10 can slide back and forth in the receiving cavity 22, so that the ball assembly 10 can slide in the receiving cavity 22 as a buffer under the action of the spring 30; the ball assembly 10 is also exposed to the outside from the first end face 21 of the conductive seat 20 to meet the need for electrical contact between the ball assembly 10 and external active devices. The insulating member 40 is arranged between the ball assembly 10 and the spring 30, so as to insulate and separate the spring 30 from the ball assembly 10 with the help of the insulating member 40. Therefore, the current acting on the ball assembly 10 cannot pass through the spring 30 due to the isolation of the insulating member 40, thereby effectively providing protection for the spring 30 and preventing the spring 30 from being burned in an environment where the current is too high (large). Specifically, in Figure 3 and Figure 7 As an example, the insulating member 40 is provided with an embedding cavity 41 for the first end 31 of the spring 30 to be embedded and installed. This can shorten the overall length of the high-current rotary contact ball connector 100 of the present invention and make the contact between the spring 30 and the insulating member 40 more reliable. More specifically, as follows:
[0029] like Figures 3 to 5As shown, as an example, the ball assembly 10 includes a ball 11 and a conductive limiting body 12 that limits the movement of the ball 11. The conductive limiting body 12 can be slidably disposed in the receiving cavity 22, and the first end 121 of the conductive limiting body 12 further protrudes from the conductive base 20. The conductive limiting body 12 has a limiting cavity 122 machined therein. The limiting cavity 122 includes a first limiting cavity 1221 and a second limiting cavity 1222 in sequence along the direction in which the receiving cavity 22 passes through the first end surface 21 of the conductive base 20. The second limiting cavity 1222 passes through the first end surface 1211 of the conductive limiting body 12. The cavity diameter D2 of the second limiting cavity 1222 is smaller than the cavity diameter D1 of the first limiting cavity 1221, so that the first end 121 of the conductive limiting body 12 correspondingly defines a blocking structure 123. The ball 11 is assembled in the first limiting cavity 1221, and the ball 11 also protrudes from the second limiting cavity 1222 to the first end surface 1211 of the conductive limiting body 12. The blocking structure 123 blocks the ball 11 from falling from the conductive limiting body 12. Figure 3 and Figure 4 As shown. Since the blocking structure 123 is obtained by lathing, the strength of the blocking structure 123 is much greater than that of the blocking structure obtained by riveting in the prior art, and thus it is not easy to deform. Even if an external active device comes into contact with the blocking structure 123 during operation, the high-current rotary contact ball connector 100 of the present invention can still work effectively. In addition, since the blocking structure 123 is obtained by lathing, the material selection range of the conductive limiter 12 is wider. Specifically, Figure 3 and Figure 4 In the figure, as an example, the conductive limiting body 12 includes a needle sleeve 12a and a needle shaft 12b, and a limiting cavity 122 is formed inside the needle sleeve 12a. At this time, the first limiting cavity 1221 also penetrates the needle sleeve 12a in a direction away from the second limiting cavity 1222 (that is, the opposite direction indicated by arrow A); the first end 12b1 of the needle shaft 12b extends into the first limiting cavity 1221 and interferes with the needle sleeve 12a and is fixed, that is, the first end 12b1 of the needle shaft 12b is fixed together with the first limiting cavity 1221 by means of interference fit; the first end face of the needle shaft 12b has an inwardly recessed conical surface 124 that contacts the ball 11, so that the contact profile of the ball 11 and the needle shaft 12b is a circular line, which effectively increases the conductive contact points of the ball 11, thereby increasing the conductive current and improving the flow capacity of the large current rotating contact ball connector 100 of the present invention. In addition, the second end 12b2 of the needle shaft 12b protrudes laterally from the first end 12b1 of the needle shaft 12, and the second end surface of the needle shaft 12 has a spherical surface 125 that is smaller than a hemisphere, so that the spherical surface 125 can contact the inclined surface 511 of the intermediate conductive member 50 to be described below, so that the conductive limiter 12 can always maintain a contact position with the conductive base body 20.
[0030] like Figure 3 and Figure 7As shown, as an example, the high-current rotary contact ball connector 100 of the present invention further includes an intermediate conductive member 50 that can be slidably disposed in the receiving cavity 122. The intermediate conductive member 50 abuts between the ball assembly 10 and the insulating member 40. With the help of the intermediate conductive member 50, the current transmission path acting on the ball assembly 10 is increased. One path can be directly transmitted from the ball assembly 10 to the conductive seat 20, and the other path can be transmitted from the ball assembly 10 to the intermediate conductive member 50, and then from the intermediate conductive member 50 to the conductive seat 20, thereby more effectively improving the current carrying capacity of the high-current rotary contact ball connector 100 of the present invention. Specifically, Figure 3 and Figure 7 As an example, the first end face 51 of the intermediate conductive member 50 has an inclined surface 511 for the ball assembly 10 to abut against, which is inclined relative to the sliding direction of the intermediate conductive member 50 (see the direction indicated by arrow A and the opposite direction indicated by arrow A). With the help of the inclined surface 511, the ball assembly 10 generates a lateral component of force, so that the ball assembly 10 can always maintain contact with the conductive seat 20; in addition, the intermediate conductive member 50 is provided with an embedding cavity 53 for the insulating member 40 to be embedded and installed, which passes through the second end face 52 of the intermediate conductive member 50. The purpose of this is to minimize the increase in the total length of the high-current rotating contact connector 100 of the present invention caused by the introduction of the intermediate conductive member 50. It should be noted that the intermediate conductive member 50 can be deleted according to actual needs. When the intermediate conductive member 50 is deleted, the insulating member 40 is in contact with the ball assembly 10, so it is not necessary to remove the intermediate conductive member 50. Figure 3 Limits shown.
[0031] Another example Figure 3 and Figure 7 As shown, as an example, the insulating member 40 includes a cylinder 40a embedded in the embedding cavity 53 and a retaining structure 40b that laterally protrudes from the cylinder 40a. The retaining structure 40b and the second end face 52 of the intermediate conductive member 50 are retained. At this time, the first end 31 of the spring 30 is embedded in the cylinder 40a; this design can avoid contact between the insulating member 40 and the conductive seat 20, as well as large resistance caused by the contact, thereby affecting the smoothness of the sliding of the intermediate conductive member 50. It should be noted that when the insulating member 40 includes the cylinder 40a and the retaining structure 40b, the interior of the cylinder 40a forms the aforementioned embedding cavity 41.
[0032] like Figure 3 、 Figure 7 and Figure 8 As shown in FIG. 1 , as an example, the receiving cavity 22 is formed on the conductive base 20 by turning, so that the strength of the limiting structure 23 described below is much greater than the strength of the limiting structure obtained by riveting in the prior art, and thus it is not easy to deform; in addition, since the limiting structure 23 is obtained by turning, the material selection range of the conductive base 20 is wider. Specifically, Figure 3 、 Figure 7 and Figure 8 As an example, the receiving cavity 22 includes a first receiving cavity 221 and a second receiving cavity 222 in sequence along the direction of the first end surface 21 of the conductive seat 20. The second receiving cavity 222 is exposed from the first end surface 21 of the conductive seat 20. The cavity diameter D4 of the second receiving cavity 222 is smaller than the cavity diameter D3 of the first receiving cavity 221, so that the conductive seat 20 defines a corresponding limiting structure 23. At this time, the ball assembly 10 is located in the first receiving cavity 221, and the ball assembly 10 also protrudes from the conductive seat 20 from the second receiving cavity 222. The limiting structure 23 prevents the ball assembly 10 from falling from the conductive seat 20. The spring 30 is located in the first receiving cavity 221. More specifically, Figure 8 As an example, the first receiving cavity 221 also penetrates the second end face 24 of the conductive seat body 20 in a direction away from the second receiving cavity 222, and a blocking member 60 is plugged into the first receiving cavity 221 from the second end face 24. The blocking member 60 is also fixed with the conductive seat body 20 through interference, that is, the blocking member 60 is fixed with the conductive seat body 20 through interference fit with the first receiving cavity 221, thereby facilitating the assembly operation of the ball assembly 10, the intermediate conductive member 50, the insulating member 40 and the spring 30 at the conductive seat body 20; at this time, the spring 30 abuts against both the blocking member 60 and the ball assembly 10.
[0033] To reduce the overall length of the high-current rotary contact ball connector 100 of the present invention, the blocking member 60 defines a receiving cavity 61 for the second end 32 of the spring 30 to be embedded and installed. It should be noted that when the high-current rotary contact ball connector 100 of the present invention includes the intermediate conductive member 50, the spring 30 indirectly contacts the ball assembly 10 through the intermediate conductive member 50; when the intermediate conductive member 50 is not included, the spring 30 directly contacts the ball assembly 10.
[0034] Compared with the prior art, the ball assembly 10 and the spring 30 are insulated and separated by the insulating member 40, so that the current acting on the ball assembly 10 cannot pass through the spring 30 due to the obstruction of the insulating member 40, thereby avoiding the spring 30 from being easily burned in an environment where the current is too high (large), thereby ensuring the reliable operation of the high-current rotating contact ball connector 100 of the present invention.
[0035] It should be noted that the center lines of the first limiting cavity 1221 and the second limiting cavity 1222 may be arranged to coincide with each other, but the present invention is not limited thereto. Similarly, the center lines of the first receiving cavity 221 and the second receiving cavity 222 may also be arranged to coincide with each other, but the present invention is not limited thereto.
[0036] The above disclosed is only a preferred embodiment of the present application, and of course cannot limit the scope of the present application, therefore equivalent changes made according to the present application claims still belong to the scope covered by the present application.
Claims
1. A high current rotary contact ball connector, characterized in that: It includes a ball assembly, a conductive seat, a spring and an insulating member. The conductive seat is provided with a receiving cavity that passes through the first end face of the conductive seat. The spring and the ball assembly are sequentially arranged in the receiving cavity along the direction in which the receiving cavity passes through the first end face. The spring abuts against both the conductive seat and the ball assembly. The ball assembly can slide back and forth in the receiving cavity. The ball assembly is also exposed to the outside from the first end face of the conductive seat. The insulating member is arranged between the ball assembly and the spring. The spring is insulated and separated from the ball assembly by the insulating member.
2. The high current rotary contact ball connector according to claim 1, characterized in that: The insulating member is provided with an embedding cavity for embedding and installing the first end of the spring.
3. The high current rotary contact ball connector according to claim 1, characterized in that: It also includes an intermediate conductive member slidably arranged in the receiving cavity, and the intermediate conductive member abuts between the ball assembly and the insulating member.
4. The high current rotary contact ball connector according to claim 3, characterized in that: The first end face of the intermediate conductive member has an inclined surface inclined relative to the sliding direction of the intermediate conductive member for the ball assembly to abut against, and the intermediate conductive member is provided with an embedding cavity penetrating the second end face of the intermediate conductive member for the insulating member to be embedded and installed.
5. The high current rotary contact ball connector according to claim 4, characterized in that: The insulating component includes a cylinder embedded in the embedding cavity and a resisting structure laterally protruding from the cylinder. The resisting structure resists and limits the second end surface of the intermediate conductive component. The first end of the spring is embedded in the cylinder.
6. The high current rotary contact ball connector according to claim 1, characterized in that: The ball assembly includes a ball and a conductive limiter that limits the movement of the ball, the conductive limiter being slidably disposed in the receiving cavity, and the first end of the conductive limiter also protruding from the conductive seat; a limiter cavity is turned on the conductive limiter, and the limiter cavity includes a first limiter cavity and a second limiter cavity in sequence along the direction in which the receiving cavity passes through the first end face of the conductive seat, the second limiter cavity passes through the first end face of the conductive limiter, and the cavity diameter of the second limiter cavity is smaller than the cavity diameter of the first limiter cavity, so that the first end of the conductive limiter correspondingly defines a blocking structure, the ball is assembled in the first limiter cavity, and the ball also protrudes from the second limiter cavity to the first end face of the conductive limiter, and the blocking structure prevents the ball from falling from the conductive limiter.
7. The high current rotary contact ball connector according to claim 6, characterized in that: The conductive limiting body includes a needle sleeve and a needle shaft. The interior of the needle sleeve forms the limiting cavity. The first limiting cavity also penetrates the needle sleeve in a direction away from the second limiting cavity. The first end of the needle shaft extends into the first limiting cavity and is fixed by interference with the needle sleeve. The first end surface of the needle shaft has an inwardly recessed conical surface that contacts the ball. The second end of the needle shaft protrudes laterally from the first end of the needle shaft. The second end surface of the needle shaft has a spherical surface smaller than a hemisphere.
8. The high current rotary contact ball connector according to claim 1, characterized in that: The receiving cavity is formed on the conductive base by turning.
9. The high current rotary contact ball connector according to claim 1, characterized in that: The receiving cavity includes a first receiving cavity and a second receiving cavity in sequence along the direction of the first end surface of the conductive seat, the second receiving cavity is exposed outward from the first end surface of the conductive seat, the cavity diameter of the second receiving cavity is smaller than the cavity diameter of the first receiving cavity, so that the conductive seat correspondingly defines a limiting structure, the ball assembly is located in the first receiving cavity, and the ball assembly also protrudes from the second receiving cavity to the conductive seat, and the limiting structure prevents the ball assembly from falling from the conductive seat; the spring is located in the first receiving cavity.
10. The high current rotary contact ball connector according to claim 9, characterized in that: The first receiving cavity also passes through the second end face of the conductive seat body in a direction away from the second receiving cavity. A blocking member is inserted into the first receiving cavity from the second end face. The blocking member is also fixed with interference with the conductive seat body. The spring abuts against both the blocking member and the ball assembly.