High-current socket

Abstract

The utility model relates to the technical field of electric connectors, and discloses a high-current socket, which comprises a socket shell, a glassware body and a female connector clip, the female connector clip is fixed in the socket shell through the glassware body, the female connector clip consists of a contact pin and a kovar alloy tube, the contact pin is made of copper alloy and welded in the kovar alloy tube, and the kovar alloy tube is fixed in the socket shell through the glassware body. The glass burning body is fixed in the middle of the contact pin through the kovar alloy tube, one end of the contact pin is connected with an electric wire, and the contact pin is welded in the kovar alloy tube. The beneficial effects of the utility model are that the contact pin is prevented from being directly contacted with the glass burning body to cause infirm fixation, and the copper alloy contact pin is small in resistance value, so that when the copper alloy contact pin is used for current transmission, the heat increase caused by large current can be avoided, the miniaturization of the connector is guaranteed, and the production cost is saved.

Description

Technical Field

[0001] The utility model relates to the technical field of electric connectors, in particular to a socket for high current. Background Art

[0002] The electrical connector includes a plug and a socket. Usually, the plug is connected to the cable, and the socket is connected to the device to achieve the electrical connection between the cable and the device. The tail attachment of the connector is a component of the transition between the connector and the cable. Its main function is to reduce the bending stress between the connector and the cable, reduce the force at the termination of the cable and the connector, so as to protect the cable from excessive deformation, wear or breakage at the termination point of the connector. At the same time, by clamping the cable, the cable will not be pulled off when subjected to external force, protecting the internal signal of the connector to be transmitted stably, such as the Chinese utility model patent (authorization announcement number: CN218887713U name: a shielded tail assembly of a circular connector). However, the temperature rise of the connector directly affects the service life of the connector, so one of the design points of the connector is the control of temperature rise. One of the factors affecting temperature rise is the heat Q generated by the connector itself when it is working, and Q=I 2 Rt, so the connector should reduce the resistance R as much as possible when used with high current. However, since the thermal expansion coefficient of glass is close to that of Kovar, in order to fix the pin by glass burning, the ideal pin is made of Kovar. The resistance value of Kovar is much larger than that of copper alloy. Therefore, if the pin is made of Kovar, in order to meet the temperature rise requirements, the cross-sectional area of ​​the contact can only be increased when used with high current. The connector designed in this way will be very large, and the cost and space will exceed expectations. Utility Model Content

[0003] The utility model aims to provide a socket for large current to overcome the shortcomings of the prior art.

[0004] The purpose of the utility model is achieved through the following technical solutions: a socket for high current, comprising a socket shell, a glass-fired body and a female connector, wherein the female connector is fixed in the socket shell through the glass-fired body, the female connector is composed of a pin and a Kovar alloy tube, the pin is made of copper alloy, the pin is welded in the Kovar alloy tube, the glass-fired body is fixed to the middle of the pin through the Kovar alloy tube, and one end of the pin is connected to a wire.

[0005] Preferably, an insulating cap is detachably mounted on one end of the pin away from the electric wire.

[0006] Preferably, a tail straight tube is also screwed on the socket housing, and a wing nut is screwed on the end of the tail straight tube away from the socket housing. A wire clamp is detachably mounted on the side wing of the wing nut by means of screws, and the wire clamp is a pair and respectively located on both sides of the side wing.

[0007] Preferably, an A-step is integrally formed on the inner wall of the tail straight pipe. A rubber sealing sleeve is placed on the A-step, and an A-washer is placed on the rubber sealing sleeve. The rubber sealing sleeve is compression-mounted on the A-step through the A-washer, and the A-washer is screwed to axially press the rubber sealing sleeve along its axis.

[0008] Preferably, an O-ring seal is provided between the socket housing and the tail straight pipe, and the O-ring seal is located at the connection section between the socket housing and the tail straight pipe.

[0009] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0010] The pin is welded inside the kovar alloy tube, which avoids the direct contact between the pin and the glass frit body, resulting in insecure fixation. Since the copper alloy pin has a small resistance value, when used for current transmission, it can avoid the increase in heat generation caused by large current, ensuring the miniaturization of the connector and saving production costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 is a schematic structural diagram of the present utility model;

[0012] Figure 2 is a schematic cross-sectional view of the present utility model;

[0013] In the figure, 1 - socket housing, 2 - glass frit body, 3 - pin, 4 - kovar alloy tube, 5 - wire, 6 - insulating cap, 7 - tail straight pipe, 8 - wing nut, 9 - wire clamping plate, 10 - A-step, 11 - rubber sealing sleeve, 12 - A-washer, 13 - O-ring seal. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0014] In order to make the objectives, technical solutions, and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are some, but not all, of the embodiments of the present utility model. The components of the embodiments of the present utility model described and illustrated herein can be arranged and designed in a variety of different configurations.

[0015] Therefore, the following detailed description of the embodiments of the present utility model provided in the drawings is not intended to limit the scope of the claimed present utility model, but merely represents selected embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts fall within the scope of protection of the present utility model.

[0016] It should be noted that, without conflict, the embodiments in the present utility model and the features in the embodiments can be combined with each other.

[0017] It should be noted that like reference numerals and letters indicate like items in the following figures. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0018] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the utility model product is usually placed during use, or the orientation or positional relationship commonly understood by those skilled in the art. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be construed as a limitation on the present utility model. In addition, the terms "first", "second", etc. are only used for differential description and cannot be understood as indicating or implying relative importance.

[0019] In the description of the present utility model, it should also be noted that unless otherwise clearly specified and defined, the terms "set", "installed", "connected", "connected to" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0020] As Figure 1 and 2 shown, a socket for high current includes a socket housing 1, a glass frit 2, and a female connector. The female connector is fixed in the socket housing 1 through the glass frit 2. The female connector is composed of a pin 3 and a kovar alloy tube 4. The pin 3 is made of copper alloy. The pin 3 is welded inside the kovar alloy tube 4. The glass frit 2 is fixed in the middle of the pin 3 through the kovar alloy tube 4. One end of the pin 3 is connected with a wire 5. The pin 3 is welded inside the kovar alloy tube 4, which avoids the direct contact between the pin 3 and the glass frit 2, resulting in insecure fixation. And the copper alloy pin 3 has a small resistance value. When used for current transmission, it can avoid the increase in heat generation caused by high current, ensure the miniaturization of the connector, and save production costs.

[0021] In this embodiment, as Figure 2As shown, an insulating cap 6 is detachably installed at one end of the pin 3 away from the wire 5. When the plug is connected to the socket, the pin 3 is inserted into the jack. If the end of the pin 3 contacts the bottom of the jack, a large amount of heat will be generated during current transmission. And the sealed environment makes it difficult for the heat at the bottom of the hole to dissipate, resulting in temperature rise, which will further reduce the service life and stability of the connector.

[0022] In this embodiment, as Figure 1 and 2 shown, a tail straight pipe 7 is also screwed onto the socket housing 1. A wing nut 8 is screwed onto one end of the tail straight pipe 7 away from the socket housing 1. A wire clamping plate 9 is detachably installed on the side wing of the wing nut 8 through a screw. There are a pair of wire clamping plates 9 and they are respectively located on both sides of the side wing. The wire clamping plate 9 is in an arch shape. Threaded holes and through holes are respectively opened at both ends of the wire clamping plate 9. First, the tail straight pipe 7 and the wing nut 8 are respectively sleeved on the wire 5. Then, after tightening the wing nut 8, use the wire clamping plate 9 to fix the wire 5 in the tail straight pipe 7. When fixing, the through hole on the wire clamping plate 9 on the left side of the side wing is coaxial with the threaded hole on the wire clamping plate 9 on the right side of the side wing, and then use a screw to tighten it.

[0023] In this embodiment, as Figure 2 shown, an A step 10 is integrally formed on the inner wall of the tail straight pipe 7. A rubber sealing sleeve 11 is placed on the A step 10. An A washer 12 is placed on the rubber sealing sleeve 11. The rubber sealing sleeve 11 is compression-installed on the A step 10 through the A washer 12. By screwing the wing nut 8, the A washer 12 axially squeezes the rubber sealing sleeve 11, avoiding friction between the wing nut 8 and the A washer 12 when the wing nut 8 rotates and advances, and using the A washer 12 to compress the rubber sealing sleeve 11 to avoid wear of the rubber sealing sleeve 11.

[0024] In this embodiment, as Figure 2 shown, an O-ring 13 is provided between the socket housing 1 and the tail straight pipe 7. The O-ring 13 is located at the connection section between the socket housing 1 and the tail straight pipe 7 to prevent water vapor from entering from the connection, resulting in short circuit or corrosion of the pin 3.

[0025] Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A socket for high current, comprising a socket housing (1), a glass body (2) and a female connector, wherein the female connector is fixed in the socket housing (1) through the glass body (2), characterized in that: The female connector is composed of a pin (3) and a Kovar alloy tube (4); the pin (3) is made of a copper alloy, the pin (3) is welded inside the Kovar alloy tube (4), the glass-fired body (2) is fixed to the middle of the pin (3) through the Kovar alloy tube (4), and one end of the pin (3) is connected to an electric wire (5).

2. A high current socket according to claim 1, characterized in that: An insulating cap (6) is detachably mounted on one end of the plug pin (3) away from the electric wire (5).

3. A high current socket according to claim 1, characterized in that: A tail straight tube (7) is also screwed onto the socket housing (1); a wing nut (8) is screwed onto one end of the tail straight tube (7) away from the socket housing (1); a wire clamping plate (9) is detachably mounted on the side wing of the wing nut (8) by means of screws; the wire clamping plates (9) are a pair and are respectively located on both sides of the side wing.

4. A high current socket according to claim 3, characterized in that: An A step (10) is integrally formed on the inner wall of the tail straight pipe (7), a rubber sealing sleeve (11) is placed on the A step (10), an A gasket (12) is placed on the rubber sealing sleeve (11), the rubber sealing sleeve (11) is compressed and installed on the A step (10) by the A gasket (12), and the A gasket (12) is pressed against the rubber sealing sleeve (11) along its axial direction by screwing the wing nut (8).

5. A high current socket according to claim 3, characterized in that: An O-type sealing ring (13) is provided between the socket housing (1) and the tail straight pipe (7), and the O-type sealing ring (13) is located at the connection section between the socket housing (1) and the tail straight pipe (7).

Images