Vibration-resistant connector

Abstract

The utility model relates to a vibration-resistant connector, which comprises a plug and a socket, the front ends of the plug and the socket are inserted oppositely, a socket shell is provided with a second bolt used for being fixedly connected with an equipment shell, and when the plug and the socket are locked, the front end face of the plug shell at least partially covers the head of the second bolt so as to stop and limit the second bolt in an axial retreating manner. According to the utility model, the bolt connected with the equipment shell on the socket shell is axially limited through the plug shell, so that the bolt cannot loosen and retreat, thereby ensuring the reliable connection between the connector and the equipment shell.

Description

Technical Field

[0001] The utility model belongs to the technical field of connectors, and in particular relates to a vibration-resistant connector. Background Art

[0002] Servo motors are engines with high-precision control functions and are often used in the field of automation control. However, due to the limitations of their use scenarios, such as the inside of industrial robot shells, rotating mechanisms of medical equipment, etc., their installation space is very small. Usually, servo motors need to realize power input, brake input, and encoder signal output functions. Most existing solutions use an integrated power and brake connector and a separate encoding connector. The connector consists of a plug and a socket, which are tightened with bolts after being buckled up and down. In the existing solution, the locking bolts are arranged on both sides. For example, in patents CN 212908186 U and CN 208256959U, the bolt installation positions for fixing the socket to the plug and the motor are arranged on both sides of the socket. After the plug and the socket are locked, the bolts on the socket used to fix the motor are blocked by the plug, and long-term vibration sometimes causes the connecting bolts between the socket and the motor to loosen but cannot be found, leading to more serious problems later. Summary of the invention

[0003] In order to solve the above problems, the utility model provides a vibration-resistant connector with a new structure, which can prevent the locking member fixed on the device by the connector plug shell to the connector socket shell to prevent the connector from loosening and fix it on the device.

[0004] The purpose of the utility model and the technical problem solved are achieved by adopting the following technical solutions. According to a vibration-resistant connector proposed by the utility model, it includes a plug and a socket with front ends plugged in, and a second bolt 12 for connecting and fixing with a device housing 13 is provided on the socket housing 6. When the plug and the socket are locked, the front end surface of the plug housing 2 at least partially covers the head of the second bolt 12 to stop and limit the axial retreat of the second bolt 12.

[0005] The purpose of the utility model and the solution to its technical problems can also be further achieved by adopting the following technical measures.

[0006] In the aforementioned vibration-resistant connector, the second bolt 12 is located in the groove 61 on the front end face of the socket housing 6, and the second bolt 12 does not protrude from the front end face of the socket housing 6 when locked to prevent it from affecting the end face connection and sealing of the plug and the socket.

[0007] In the aforementioned vibration-resistant connector, the plug housing 2 is also provided with an escape groove for escaping the second bolt 12. When the plug and the socket are locked, the head of the second bolt 12 in the locked state is located in the escape groove and is axially stopped and limited by the bottom of the escape groove.

[0008] In the aforementioned vibration-resistant connector, a side of the plug housing 2 is provided with an escape portion 23 for partially exposing the second bolt 12 for observing its status, thereby satisfying intuitive observation of the connector installation status.

[0009] In the aforementioned vibration-resistant connector, the front end face of the plug housing is rectangular, and a first bolt 4 is provided at one set of diagonal portions of the rectangle, and a first bolt hole 14 correspondingly provided on the front end face of the socket housing 6 for fitting and locking with the first bolt, so as to meet the bolt connection requirements of the plug and the socket without increasing the size of the connector.

[0010] In the aforementioned vibration-resistant connector, another set of opposite corners of the rectangle is provided with an outer chamfer to form an avoidance portion 23, so as to satisfy the connection and fixation between the connector plug and the socket, and the anti-loosening fixation between the socket and the device housing without increasing the size of the connector.

[0011] In the aforementioned vibration-resistant connector, a sealing gasket 10 is further provided between the plug housing and the socket housing for achieving waterproof sealing therebetween.

[0012] In the aforementioned vibration-resistant connector, a sealing ring 11 for achieving waterproof sealing between the socket housing and the device housing is further provided on the surface where the socket housing and the device housing are in contact with each other.

[0013] The aforementioned vibration-resistant connector, the plug housing includes a first cavity 21 extending along the plug-in direction and a second cavity 22 extending along another direction, the second cavity 22 and the first cavity 21 are at an angle and are connected to each other, the first cavity 21 is provided with a plug insulator 3 and a plug end contact, the cable passes through the second cavity 22 and is connected to the plug end contact.

[0014] In the aforementioned vibration-resistant connector, the plug insulator 3 is fixedly positioned in the first cavity 21 by means of spring claws.

[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 wide industrial utilization value, and has at least the following advantages:

[0016] The utility model uses the plug housing to axially limit the bolts on the socket housing that are connected with the device housing, so that the bolts cannot be loosened and retreated, thereby ensuring a reliable connection between the connector and the device housing.

[0017] In addition, the bolts for locking the connection between the plug and the socket and the positions for limiting the connection bolts between the socket housing and the device housing are respectively distributed on two groups of diagonals at the front end of the plug housing, thereby satisfying the bolt connection of the plug and socket and the anti-loosening fixation of the socket on the device without increasing the overall size of the connector. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the composition of the vibration-resistant connector of the utility model;

[0019] Figure 2 This is a schematic diagram of the separation state of the vibration-resistant connector of the utility model when it is fixed on the equipment;

[0020] Figure 3 This is a schematic diagram of the plugged-in state of the vibration-resistant connector of the utility model when it is fixed on the equipment;

[0021] Figure 4 for Figure 3 A top view of

[0022] Figure 5 It is a cross-sectional view of the vibration-resistant connector of the utility model.

[0023]

Main component symbol description

[0024] 1: Cable

[0025] 2: Plug housing

[0026] 21: First cavity

[0027] 22: Second cavity

[0028] 23: Avoidance

[0029] 3: Plug insulator

[0030] 4: First bolt

[0031] 5: Plug

[0032] 6: Socket housing

[0033] 61: Groove

[0034] 7: Sealing ring

[0035] 8. Clamping ring

[0036] 9. Locking nut

[0037] 10: Sealing gasket

[0038] 11: Sealing ring

[0039] 12: Second bolt

[0040] 13: Motor housing

[0041] 14: First threaded hole DETAILED DESCRIPTION

[0042] In order to further explain the technical means and effects adopted by the present invention to achieve the predetermined invention purpose, the specific implementation method, structure, characteristics and effects of the vibration-resistant connector proposed according to the present invention are described in detail below in combination with the accompanying drawings and preferred embodiments.

[0043] See also Figure 1-5 , which is a schematic diagram of the structure of each part of the vibration-resistant connector of the utility model, the connector includes a plug 5 and a socket 6 that are plugged in at the front end, wherein the plug 5 includes a plug housing 2 and a plug insulator 3 fixed in the plug housing 2, the plug insulator 3 is located in a first cavity 21 extending along the first direction at the front end of the plug housing 2, and the front end of the first cavity 21 is open for the socket end contact to enter and realize the matching and plugging with the plug end contact in the plug insulator 3. The rear end of the plug housing 2 also has a second cavity 22 extending along the second direction, the rear end of the second cavity 22 is open, and the front end is connected to the first cavity.

[0044] The front end of the cable 1 at the rear of the plug housing 2 passes through the second cavity 22 into the first cavity 21, and is connected and fixed with the crimping end of the curved contact piece assembled in the plug insulator 3. In this embodiment, the first cavity 21 extends along the plug 1 insertion direction, and the extension direction of the second cavity 22 is perpendicular to the first cavity 22. Preferably, the plug housing 2 is integrally formed.

[0045] In this embodiment, the plug insulator 3 is fixedly positioned in the first cavity 22 of the plug housing 2 by means of spring claws. Specifically, spring claws are provided on the two end faces of the plug insulator 3 that contact the side walls of the plug housing 2, and a slot for the spring claws to enter is provided on the side walls of the plug housing 2.

[0046] The cable 1 is locked and fixed at the rear of the plug housing 2 by means of a locking wire nut 9, a clamping ring 8 and a sealing ring 7 fixed to the outer periphery of the rear of the plug housing 2. Specifically, the locking wire nut 9 is thread-locked with the outer periphery of the rear of the plug housing 2, and the locking wire nut 9 presses the sealing ring 7 to the outer periphery of the cable 1 through the clamping ring 8, thereby ensuring a reliable seal between the cable 1 and the plug housing 2.

[0047] The front end of the plug housing 2 is provided with a first locking member for locking with the socket housing. In this embodiment, the first locking member is a first bolt 4, but in other embodiments of the utility model, the first locking member may also be other locking structures such as a hook.

[0048] The socket comprises a socket housing 6 , a front end of which is provided with a first locking portion adapted to match with a first locking member on the plug housing 2 . In this embodiment, the first locking portion is a first threaded hole 14 adapted to the first bolt 4 .

[0049] The socket housing 6 is also provided with a second bolt 12 for connecting and fixing with the device housing (motor). The socket housing 6 is also provided with a groove 61 so that the second bolt 12 does not protrude from the mating surface of the front end of the socket housing 6 and the front end of the plug housing 2 after being locked with the device housing. The second bolt 12 is located in the groove 61. When the plug and the socket are locked, the front end surface of the plug housing 2 covers the second bolt 12, which can achieve axial limitation of the second bolt and prevent it from loosening and retreating. Preferably, the head of the first bolt 12 is flush with the mating surface of the front end of the socket housing 6 after being locked.

[0050] In order to further observe the connection state of the second bolt 12 , the plug housing 2 is further provided with an escape portion 23 for partially exposing the second bolt 12 .

[0051] In this embodiment, the front end face of the plug housing 2 is rectangular as a whole, the first bolt 4 is located at two diagonal corners of the rectangle, and the other two diagonal corners of the rectangle are provided with outer chamfers to form avoidance portions 23 to prevent the plug housing 2 from completely covering the second bolt 12. The outer wall of the first cavity 21 is also rectangular, and the four corners of the rectangle are provided with chamfer structures, so that the first bolt 4 is located at a position where the front end face of the plug housing 2 protrudes from the outer wall of the first cavity 21. That is, the provision of the first bolt 4 of the utility model does not increase the size of the plug housing 2, meeting the miniaturization requirements of the connector.

[0052] In another embodiment of the utility model, the groove 61 is removed from the plugging surface of the socket housing 6, so that the second bolt 12 protrudes from the plugging surface after being locked. At this time, a relief groove for avoiding the protruding second bolt 12 is provided on the front end surface of the plug housing 2. When the second bolt 12 locks the socket housing 6 on the device housing and the plug and the socket are locked, the head of the second bolt 12 is located in the relief groove and cooperates with a small gap at the bottom of the relief groove. When the second bolt 12 loosens and retreats during vibration, it is restricted by the bottom of the relief groove, thereby ensuring the anti-loosening connection between the socket and the device.

[0053] A sealing gasket 10 is also provided between the plug housing 2 and the socket housing 6 to seal the mating surface between the two, so as to achieve waterproof sealing after the connector is plugged in. Preferably, an annular groove is provided on the mating surface of the plug housing 2, the sealing gasket 10 is located in the annular groove, and the first bolt 4 is located outside the sealing gasket 10.

[0054] The contact surface between the plug housing 6 and the motor housing is also sealed by a sealing ring 11 to achieve a waterproof seal between the two. Preferably, a ring groove is provided on the rear end surface of the plug housing 6, and the sealing ring 11 is located in the ring groove. The first threaded hole 14 and the second bolt 12 are both located outside the sealing ring 11.

[0055] When the utility model is in use, the socket housing 6 is first fixed to the motor housing by the second bolt 12, and then the plug and the socket are inserted and locked. At this time, the plug housing at least partially covers the head of the second bolt 12, limiting the axial position of the second bolt 12 to prevent it from retreating and loosening.

[0056] In other embodiments of the present invention, the plug may also be of other structures, such as a straight structure, and the use requirements of the present invention can be met only if the front end engagement surface of the shell can prevent the second bolt from loosening.

[0057] The above description is only a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Although the present invention has been disclosed as a preferred embodiment as above, it is not intended to limit the present invention. Any technician familiar with the profession can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any simple modification, equivalent change and modification made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still fall within the scope of the technical solution of the present invention.

Claims

1. A vibration-resistant connector, comprising a plug and a socket for front-end insertion, characterized in that: The socket housing is provided with a second bolt for connecting and fixing with the device housing. When the plug and the socket are locked, the front end surface of the plug housing at least partially covers the head of the second bolt to stop and limit the axial retreat of the second bolt.

2. The vibration-resistant connector according to claim 1, characterized in that: The second bolt is located in a groove on the front end surface of the socket housing, and the second bolt does not protrude from the front end surface of the socket housing when being locked.

3. The vibration-resistant connector according to claim 1, characterized in that: The plug housing is also provided with an escape groove for escaping the second bolt. When the plug and the socket are locked, the head of the second bolt in the locked state is located in the escape groove and is axially stopped and limited by the bottom of the escape groove.

4. The vibration-resistant connector according to claim 2 or 3, characterized in that: A relief portion for exposing a portion of the second bolt to observe its state is provided on one side of the plug housing.

5. The vibration-resistant connector according to claim 4, characterized in that: The front end face of the plug housing is rectangular, a first bolt is arranged at one set of diagonal portions of the rectangle, and a first bolt hole adapted to be locked with the first bolt is correspondingly arranged on the front end face of the socket housing.

6. The vibration-resistant connector according to claim 5, characterized in that: Another set of opposite corners of the rectangle is provided with external chamfers to form an escape portion.

7. The vibration-resistant connector according to any one of claims 1-3, 5-6, characterized in that: A sealing gasket is also provided between the plug housing and the socket housing for achieving waterproof sealing therebetween.

8. The vibration-resistant connector according to claim 7, characterized in that: A sealing ring for achieving waterproof sealing between the socket housing and the device housing is also provided on the surfaces where the socket housing and the device housing are in contact with each other.

9. The vibration-resistant connector according to any one of claims 1-3, 5-6, characterized in that: The plug housing includes a first cavity extending along the plugging direction and a second cavity extending along another direction. The second cavity and the first cavity are at an angle and are connected to each other. A plug insulator and a plug end contact are arranged in the first cavity. The cable passes through the second cavity and is connected to the plug end contact.

10. The vibration-resistant connector according to claim 9, characterized in that: The plug insulator is fixedly positioned in the first cavity by means of elastic claws.

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