Contact fixing structure, high-voltage connector and high-voltage connector assembly

Abstract

The utility model relates to a contact fixing structure, a high voltage connector and a high voltage connector assembly, the contact fixing structure comprises an insulator, a contact and a contact fixing sleeve, the outer wall of the contact is provided with a first groove and a first boss, the inner wall of the insulator is provided with a second boss, the contact fixing sleeve is installed in the first groove, and the second boss is installed in the second groove. The front side of the contact fixing sleeve is provided with an inclined plane structure, so that the contact fixing sleeve is convenient to mount and dismount. After the contact piece is installed from the tail of the insulator and assembled in place, the contact piece fixing sleeve is bounced off and clamped at the front end of the second boss, the first boss is located at the rear end of the second boss, and axial positioning of the contact piece is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of connectors, in particular to a contact fixing structure, a high-voltage connector and a high-voltage connector assembly. Background Art

[0002] High voltage resistant connectors are widely used in aerospace, aviation, nuclear energy and other fields. Existing connectors usually use a pressure plate and an insulator to fix the contact, which results in a joint surface between the pressure plate and the insulator, and a minimum electrical gap between the contact and the metal shell along the joint surface. In high altitude or low pressure environments, the air is thin, and the electrical gap between the contact at the joint surface is small, which is very easy to cause electrical breakdown, resulting in the failure of the connector's voltage resistance, burning, and inability to withstand high voltage. Summary of the invention

[0003] In order to overcome the defects of the prior art, the utility model provides a contact fixing structure, a high-voltage connector and a high-voltage connector assembly. The contact is installed in the corresponding insulator from the tail of the insulator and is axially limited and fixed by a contact fixing sleeve. When removing and removing, a sleeve-type removal tool is inserted from the plug-in end of the connector to radially squeeze and shrink the contact fixing sleeve to achieve the removal and removal of the contact. The utility model realizes the function of installing and removing the contact from behind, which is convenient for installation and removal. In addition, the contact fixing structure of the utility model eliminates the traditional pressure plate fixing the contact. The insulator is an integrated structure, which eliminates the joint surface between the pressure plate and the insulator, avoids the electrical gap between the contact and between the contact and the metal shell, and improves the high-voltage resistance of the connector and its assembly in a low-pressure environment.

[0004] The utility model is specifically implemented through the following technical solutions. According to a contact fixing structure proposed by the utility model, it includes an insulator, a contact and a contact fixing sleeve, with the plug-in end of the contact as the front end, the outer wall of the contact is provided with a first groove and a first boss, and the first boss is located behind the first groove; the inner wall of the insulator is provided with a second boss, and the contact fixing sleeve is installed in the first groove, the contact fixing sleeve is an open ring, and the front end of the contact fixing sleeve is provided with an inclined surface structure for facilitating the loading and unloading of the contact; during the assembly process of the contact, the second boss squeezes the inclined surface to make the contact fixing sleeve radially shrink, and after being assembled in place, the contact fixing sleeve is axially stopped with the second boss, and the first boss is located at the rear end of the second boss and is axially stopped with the second boss.

[0005] In the aforementioned contact fixing structure, a first sealing ring installation groove is further provided between the first boss and the first groove, and a sealing ring I is installed in the first sealing ring installation groove, through which the sealing ring I realizes the sealing between the contact and the insulator.

[0006] In the aforementioned contact fixing structure, the outer wall of the insulator is provided with a second sealing ring installation groove, in which a sealing ring II is installed, and the sealing between the insulator and the metal shell of the connector is achieved by the sealing ring II.

[0007] In the aforementioned contact fixing structure, a contact positioner is also installed between the contact and the insulator. The contact positioner is forcibly installed between the tail of the contact and the insulator. The contact positioner can reduce the deflection of the contact and improve the reliability of the connector.

[0008] The utility model also provides a high-voltage plug connector, which includes a plug housing and a plug contact fixing structure arranged in the plug housing, the plug contact fixing structure includes a plug insulator, a plug contact and a plug contact fixing sleeve, the plug insulator, the plug contact and the plug contact fixing sleeve respectively adopt the insulator, contact and contact fixing sleeve as described above, and the plug contact fixing structure adopts the contact fixing structure as described above.

[0009] Furthermore, the high-voltage plug connector also includes a plug threaded sleeve, which is installed at the rear of the plug housing and is threadedly engaged with the plug housing, and the plug insulator is axially limited and fixed by the plug threaded sleeve.

[0010] Furthermore, in the high-voltage plug connector, an interface seal is also provided at the front end of the plug insulator, and a through hole is provided on the interface seal for the plug contact to pass through, a boss structure is provided on the front side of the interface seal, a protrusion is provided on the rear side, and a groove is provided on the mating surface of the plug insulator, and the protrusion is assembled in the groove.

[0011] The utility model also provides a high-voltage socket connector, which includes a socket housing and a socket contact fixing structure arranged in the socket housing, the socket contact fixing structure includes a socket insulator, a socket contact and a socket contact fixing sleeve, the socket insulator, the socket contact and the socket contact fixing sleeve respectively adopt the insulator, contact and contact fixing sleeve as described above, and the socket contact fixing structure adopts the contact fixing structure as described above.

[0012] Furthermore, the high-voltage socket connector also includes a socket threaded sleeve, which is installed at the rear of the socket shell and is threadedly engaged with the socket shell, and the socket insulator is axially limited and fixed by the socket threaded sleeve.

[0013] Furthermore, in the high-voltage socket connector, a gap is provided between the front end of the socket insulator and the socket housing, a rubber ring is installed in the gap, and the socket and the plug are sealed by the rubber ring after the head seats are plugged in.

[0014] The utility model also provides a high-voltage connector assembly, which comprises a high-voltage plug connector and a high-voltage socket connector. The high-voltage plug connector is the high-voltage plug connector as described above, and the high-voltage socket connector is the high-voltage socket connector as described above.

[0015] Compared with the prior art, the utility model has obvious advantages and beneficial effects. By means of the above technical solution, the utility model can achieve considerable technical progress and practicality, and has a wide range of utilization value, and has at least the following advantages:

[0016] (1) The contact fixing structure, high-voltage connector and high-voltage connector assembly provided by the utility model are characterized in that the contact is installed and fixed in the corresponding insulator from the tail of the insulator through the contact fixing sleeve. When it is necessary to remove the contact, a sleeve-type removal tool is inserted from the plug-in end of the connector to radially squeeze and shrink the contact fixing sleeve to realize the removal of the contact. The contact fixing structure realizes the function of rear-installation and front-removal of the contact, which is convenient for installation and removal.

[0017] (2) The contact fixing structure provided by the utility model eliminates the traditional pressure plate fixing contact, and the insulator is an integrated structure, eliminating the joint surface between the pressure plate and the insulator, avoiding the electrical gap between the contacts and between the contacts and the metal shell, and improving the high-pressure resistance of the connector and its components in a low-pressure environment.

[0018] (3) The high-voltage connector and its components provided by the utility model, after the connectors are plugged in, the plug contact and the socket contact are plugged in, the plug housing is inserted into the gap between the socket housing and the socket insulator and abuts against the rubber ring in the socket, the socket housing is inserted into the gap between the plug housing and the connecting nut and is screwed with the connecting nut. After the screws are screwed in, the socket insulator and the plug insulator mutually squeeze the interface seal, blocking the air passage between the contact and the metal housing, meeting the sealing and moisture-proof performance, and improving the high-voltage resistance of the connector in a low-pressure environment. The rubber ring is used to form a seal between the socket housing and the plug housing to ensure the moisture-proof and sealing performance of the connector. The plug contact and the plug insulator are sealed by sealing ring I, the plug insulator and the plug housing are sealed by sealing ring II, the socket contact and the socket insulator are sealed by sealing ring III, and the socket insulator and the socket housing are sealed by sealing ring IV, thereby improving the high-voltage resistance of the high-voltage connector assembly in a low-pressure environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the contact fixing structure of the utility model.

[0020] Figure 2 is a schematic diagram of a high voltage plug connector.

[0021] Figure 3 is a schematic diagram of a high voltage socket connector.

[0022] Figure 4 It is a schematic diagram of the high voltage connector assembly being plugged into place.

[0023] Figure 5 (a) is a three-dimensional view of the contact fixing sleeve, and (b) is a side view of the contact fixing sleeve.

[0024] Figure 6 (a) is a perspective view of the interface seal, and (b) is a side view of the interface seal.

[0025]

Components and symbols

[0026] 1- plug housing;

[0027] 2-plug insulator;

[0028] 3-plug contacts;

[0029] 4-plug contact fixing sleeve;

[0030] 5- first groove;

[0031] 6- Bevel structure;

[0032] 7- first boss;

[0033] 8- second boss;

[0034] 9-Sealing ring Ⅰ;

[0035] 10- Sealing ring II;

[0036] 11-plug contact locator;

[0037] 12-plug thread sleeve;

[0038] 13-interface seal;

[0039] 14- boss structure;

[0040] 15-convex;

[0041] 16-connecting nut;

[0042] 17-socket housing;

[0043] 18-socket insulator;

[0044] 19-socket contact;

[0045] 20- socket contact fixing sleeve;

[0046] 21- second groove;

[0047] 22- third boss;

[0048] 23- fourth boss;

[0049] 24- Sealing ring III;

[0050] 25-seal ring IV;

[0051] 26-socket contact locator;

[0052] 27-socket threaded sleeve;

[0053] 28- Rubber ring. DETAILED DESCRIPTION

[0054] In order to make the purpose, technical solution and advantages of the embodiments of the utility model clearer, the technical solution of the utility model will be clearly and completely described below in conjunction with specific embodiments and drawings. Obviously, the described features are only part of the embodiments of the utility model, not all embodiments. Therefore, the following detailed description of the utility model provided in the drawings is not intended to limit the scope of protection claimed, but merely represents the selected embodiments of the utility model. Based on the embodiments described below of the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0055] In the following embodiments, the “front end” refers to the plug-in end of a socket or a plug, and the “tail end” refers to the end where the socket or the plug is connected to a cable.

[0056] Embodiment of plug high voltage connector:

[0057] like Figure 1 and Figure 2 As shown, a plug high voltage connector provided by the utility model comprises a plug housing 1 and a plug contact fixing structure arranged in the plug housing, wherein the plug contact fixing structure comprises a plug insulator 2, a plug contact 3 and a plug contact fixing sleeve 4. A first groove 5 is arranged on the outer wall of the plug contact, and a plug contact fixing sleeve is installed in the first groove. The structure of the plug contact fixing sleeve is as shown in FIG. Figure 4 As shown, it is an open ring, and the opening can make the plug contact fixing sleeve contract radially to facilitate installation and removal. The front side of the plug contact fixing sleeve is provided with an inclined surface structure 6 to facilitate installation and removal.

[0058] The outer wall of the plug contact is provided with a first boss 7, and the first boss is located behind the first groove. The inner wall of the plug insulator is provided with a second boss 8, and the inner diameter of the second boss is smaller than the outer diameter of the first boss. The plug contact is installed from the tail of the plug insulator. During the assembly process, the second boss on the inner wall of the plug insulator squeezes the inclined surface structure of the plug contact fixing sleeve to cause the plug contact fixing sleeve to contract radially, so that the plug contact and the plug contact fixing sleeve pass through the through hole at the second boss and are assembled in the plug insulator. After passing through the through hole at the second boss, the plug contact fixing sleeve pops open and is stuck at the front end of the second boss. The first boss is located at the rear end of the second boss. The axial positioning of the plug contact is achieved through the mutual cooperation between the plug contact fixing sleeve and the first boss and the second boss.

[0059] Furthermore, a first sealing ring installation groove is provided between the first boss and the first groove, and a sealing ring I9 is ​​installed in the first sealing ring installation groove, and the sealing between the plug contact and the plug insulator is achieved through the sealing ring I. A second sealing ring installation groove is also provided on the outer wall of the plug insulator, and a sealing ring II10 is installed in the second sealing ring installation groove, and the sealing between the plug insulator and the plug housing is achieved through the sealing ring II, thereby improving the air tightness of the plug connector.

[0060] Furthermore, a plug contact positioner 11 is installed between the tail of the plug contact and the plug insulator. The plug contact positioner is forcibly installed between the tail of the plug contact and the plug insulator. The plug contact positioner can reduce the deflection of the plug contact and improve the reliability of the plug connector.

[0061] In one embodiment, the plug contacts and the plug insulator are positioned by the plug thread sleeve 12 after being installed into the plug housing. Figure 2 As shown, the plug thread sleeve is installed at the rear of the plug housing and is threadedly engaged with the plug housing. The plug thread sleeve can be used to axially limit and fix the plug insulator to prevent it from loosening.

[0062] In one embodiment, an interface seal 13 is also provided at the front end of the plug insulator, through which the waterproof sealing function of the internal contact parts is realized after the plug base is plugged in. The structure of the interface seal is as follows: Figure 6 As shown, the interface seal is provided with a through hole for the plug contact to pass through, and the side of the interface seal used to form a seal with the socket insulator is defined as the sealing surface. The through hole on one side of the sealing surface is provided with a boss structure 14 around it. After the head seat is plugged in, the plug insulator and the socket insulator mutually squeeze the interface seal to meet the moisture-proof and sealing performance of the connector. A protrusion 15 is provided on the other side of the interface seal, and a groove is provided on the plug insulator mating surface. The protrusion is assembled in the groove to complete the installation of the interface seal.

[0063] In one embodiment, a connecting nut 16 is further mounted outside the plug housing.

[0064] Embodiment of socket high voltage connector:

[0065] like Figure 3 As shown, the socket high voltage connector includes a socket housing 17 and a socket contact fixing structure arranged in the socket housing, and the socket contact fixing structure includes a socket insulator 18, a socket contact 19 and a socket contact fixing sleeve 20. The outer wall of the socket contact is provided with a second groove 21, and the socket contact fixing sleeve is installed in the second groove. The structure of the socket contact fixing sleeve is the same as that of the plug contact fixing sleeve, and will not be repeated.

[0066] The outer wall of the socket contact is provided with a third boss 22, and the third boss is located behind the second groove. The inner wall of the socket insulator is provided with a fourth boss 23, and the inner diameter of the fourth boss is smaller than the outer diameter of the third boss. The socket contact is installed from the tail of the socket insulator. During the assembly process, the fourth boss on the inner wall of the socket insulator squeezes the inclined structure of the socket contact fixing sleeve to cause the socket contact fixing sleeve to contract radially, so that the socket contact and the socket contact fixing sleeve pass through the through hole at the fourth boss and are assembled in the socket insulator. After passing through the through hole at the fourth boss, the socket contact fixing sleeve pops open and is stuck at the front end of the fourth boss. The third boss is located at the rear end of the fourth boss. The axial positioning of the socket contact is achieved through the mutual cooperation between the socket contact fixing sleeve and the third boss and the fourth boss.

[0067] A third sealing ring installation groove is also provided between the third boss and the second groove, and a sealing ring III 24 is installed in the third sealing ring installation groove, and the sealing ring III is used to achieve sealing between the socket contact and the socket insulator. A fourth sealing ring installation groove is also provided on the outer wall of the socket insulator, and a sealing ring IV 25 is installed in the fourth sealing ring installation groove, and the sealing ring IV is used to achieve sealing between the socket insulator and the socket housing, thereby improving the air tightness of the socket connector.

[0068] Furthermore, a socket contact positioner 26 is installed between the socket contact and the socket insulator. The socket contact positioner is installed between the tail of the socket contact and the socket insulator. The socket contact positioner can reduce the deflection of the socket contact and improve the reliability of the socket connector.

[0069] In one embodiment, the socket contacts and the socket insulator are positioned by the socket threaded sleeve 27 after being installed into the socket housing. Figure 3 As shown, the socket thread sleeve is installed at the rear of the socket housing and meshes with the socket housing thread. The socket thread sleeve can be used to axially limit and fix the socket insulator to prevent it from loosening.

[0070] A gap is provided between the front end of the socket insulator and the socket shell for the header to be inserted into the plug shell when plugging together, and a rubber ring 28 is also installed in the gap between the front end of the socket insulator and the socket shell. After the header is plugged together, the rubber ring is used to seal the socket and the plug.

[0071] Embodiment of a high voltage connector assembly:

[0072] The utility model provides a high-voltage connector assembly including the above-mentioned plug high-voltage connector and socket high-voltage connector. After the two are plugged in, the plug contact and the socket contact are plugged in, the plug housing is inserted into the gap between the socket housing and the socket insulator and abuts against the rubber ring in the socket, the socket housing is inserted into the gap between the plug housing and the connecting nut and is screwed with the connecting nut. After the screws are screwed in, the socket insulator and the plug insulator mutually squeeze the interface seal, blocking the air passage between the socket contact and the plug contact and the metal housing, meeting the sealing and moisture-proof performance, and improving the high-voltage resistance of the connector in a low-pressure environment. The rubber ring is used to form a seal between the socket housing and the plug housing to ensure the moisture-proof and sealing performance of the connector. The plug contact and the plug insulator are sealed by sealing ring I, the plug insulator and the plug housing are sealed by sealing ring II, the socket contact and the socket insulator are sealed by sealing ring III, and the socket insulator and the socket housing are sealed by sealing ring IV, thereby improving the high-voltage resistance of the high-voltage connector assembly in a low-pressure environment.

[0073] In one embodiment, the socket contact is a jack contact, and the plug contact is a pin contact, but this description should not be regarded as a limitation to the present invention.

[0074] The utility model provides a contact fixing structure, a high-voltage connector, and a high-voltage connector assembly. The contact is installed and fixed in the corresponding insulator from the tail of the insulator through a contact fixing sleeve. When it needs to be removed, a sleeve-type removal tool is inserted from the connector plug-in end to radially squeeze and shrink the contact fixing sleeve to achieve the removal of the contact. The contact fixing structure realizes the function of installing the contact from behind and removing it from the front, which is convenient for installation and removal. In addition, the fixing structure eliminates the traditional pressure plate fixing the contact. The insulator is an integrated structure, eliminating the joint surface between the pressure plate and the insulator, avoiding the electrical gap between the contact and between the contact and the metal shell, and improving the high-voltage resistance of the connector and its assembly in a low-pressure environment.

[0075] The above is only an embodiment of the utility model, and does not limit the utility model in any form. The utility model can also have other forms of embodiments according to the above structure and function, which are not listed one by one. Therefore, any simple modification, equivalent change and modification made by any technician familiar with the profession to the above embodiment according to the technical essence of the utility model without departing from the scope of the technical solution of the utility model still falls within the scope of the technical solution of the utility model.

Claims

1. Contact fixing structure, characterized in that It includes an insulator, a contact piece and a contact piece fixing sleeve, with the plug-in end of the contact piece as the front end, the outer wall of the contact piece is provided with a first groove and a first boss, and the first boss is located behind the first groove; the inner wall of the insulator is provided with a second boss, and the contact piece fixing sleeve is installed in the first groove. The contact piece fixing sleeve is an open ring, and the front end of the contact piece fixing sleeve is provided with an inclined surface structure for facilitating the loading and unloading of the contact piece; during the assembly process of the contact piece, the second boss squeezes the inclined surface to make the contact piece fixing sleeve radially shrink. After being assembled in place, the contact piece fixing sleeve cooperates with the second boss axial stop, and the first boss is located at the rear end of the second boss and cooperates with the second boss axial stop.

2. The contact fixing structure according to claim 1, characterized in that A first sealing ring installation groove is also provided between the first boss and the first groove, and a sealing ring I is installed in the first sealing ring installation groove, and the sealing between the contact piece and the insulator is achieved through the sealing ring I.

3. The contact fixing structure according to claim 1, characterized in that The outer wall of the insulator is provided with a second sealing ring installation groove, and a sealing ring II is installed in the second sealing ring installation groove.

4. The contact fixing structure according to claim 1, characterized in that A contact positioner is also installed between the contact and the insulator. The contact positioner is forcibly installed between the tail of the contact and the insulator, and the deflection amount of the contact is reduced by the contact positioner.

5. High voltage plug connector, characterized in that It comprises a plug housing (1) and a plug contact fixing structure arranged in the plug housing, wherein the plug contact fixing structure is the contact fixing structure according to any one of claims 1 to 4.

6. The high voltage plug connector according to claim 5, characterized in that It also comprises a plug thread sleeve (12), which is mounted at the rear of the plug housing and is threadably engaged with the plug housing, and the plug insulator is axially limited and fixed by the plug thread sleeve.

7. The high voltage plug connector according to claim 5, characterized in that An interface seal (13) is also provided at the front end of the plug insulator. The interface seal is provided with a through hole for the plug contact to pass through. A boss structure (14) is provided on the front side of the interface seal, and a protrusion (15) is provided on the rear side. A groove is provided on the plug insulator plugging surface, and the protrusion is assembled in the groove.

8. High voltage socket connector, characterized in that It comprises a socket housing (17) and a socket contact fixing structure arranged in the socket housing, wherein the socket contact fixing structure is the contact fixing structure according to any one of claims 1 to 4.

9. The high voltage socket connector according to claim 8, characterized in that It also includes a socket thread sleeve (27), which is mounted at the rear of the socket housing and is threadably engaged with the socket housing, and the socket insulator is axially limited and fixed by the socket thread sleeve.

10. The high voltage socket connector according to claim 8, characterized in that A gap is provided between the front end of the socket insulator and the socket housing, and a rubber ring (28) is installed in the gap. After the head seats are plugged in, the socket and the plug are sealed by the rubber ring.

11. A high voltage connector assembly, comprising a high voltage plug connector and a high voltage socket connector, characterized in that The high-voltage plug connector is the high-voltage plug connector described in any one of claims 5-7, and the high-voltage socket connector is the high-voltage socket connector described in any one of claims 8-10.

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