Plug and waterproof connector

Abstract

The utility model provides a plug and a waterproof connector, the plug comprises an inner core assembly axially extending along the front and back direction, a sleeve sleeved outside the inner core assembly, and a sealing rubber ring installed at the tail end of the sleeve and used for sealing a cable in the inner core assembly, the tail part of the sleeve is connected with a tail part locking piece, and the tail part locking piece is connected with the inner core assembly. The front end part of the sleeve is provided with a connecting cap capable of locking an adaptive socket, and the sealing rubber ring realizes reliable sealing under the action of the sleeve and the tail locking piece. According to the plug, an elastic claw structure is not needed, the tail locking piece is directly connected with the sleeve, the problem that a rubber sleeve cannot be normally assembled due to repeated compression deformation of an elastic claw is solved, the length of a connector is shortened, and the use requirement of a small-space environment is met.

Description

Technical Field

[0001] The utility model relates to the technical field of connectors, in particular to a plug and a waterproof connector. Background Art

[0002] At present, outdoor waterproof connectors that can be installed on site are often in the form of connector + tail accessories. Please refer to Figure 1 After insertion, the sealing ring I 2ˊ and the socket rubber pad 1ˊ realize the direct sealing between the plug and the socket, the sealing ring II 4ˊ realizes the sealing between the tail accessory and the inner shell 3ˊ, and the tail accessory (gland) is used to seal the optical cable.

[0003] The above connector has the following defects: (1) The tail attachment includes a spring claw 5ˊ, which is used to compress the rubber sleeve 6ˊ to achieve sealing. The specific structure of the spring claw 5ˊ is as follows: Figure 2 As shown, the spring claw 5ˊ is usually made of thermoplastic materials such as nylon, which are prone to plastic deformation after repeated compression, resulting in the rubber sleeve 6ˊ not being able to be assembled normally, and the effective installation times are low; (2) The tail attachment including the spring claw 5ˊ causes the connector to be longer, and the connector cannot be used in some small spaces. Utility Model Content

[0004] In view of this, the purpose of the utility model is to provide a plug and a waterproof connector. The plug does not need to use a spring claw structure, and directly connects the tail locking piece to the sleeve. It not only solves the problem that the rubber sleeve cannot be assembled normally due to repeated compression and deformation of the spring claw, but also shortens the length of the connector and meets the use requirements of small space environments.

[0005] The technical solution adopted by the utility model to solve the above technical problems is:

[0006] On the one hand, the utility model provides a plug, including an inner core assembly extending axially in the front-to-back direction, a sleeve sleeved on the outside of the inner core assembly, and a sealing rubber ring installed at the end of the sleeve for sealing the cable in the inner core assembly, the tail of the sleeve is connected to a tail locking piece, the front end of the sleeve is provided with a connecting cap that can lock the adapter socket, and the sealing rubber ring achieves reliable sealing under the action of the sleeve and the tail locking piece.

[0007] Furthermore, a compression ring is provided between the tail locking piece and the sealing rubber ring, and the compression ring is used to assist in compressing the sealing rubber ring and prevent the sealing rubber ring from rotating with the tail locking piece.

[0008] Furthermore, the clamping ring is pre-fixed inside the tail locking piece.

[0009] Furthermore, the sealing rubber ring comprises a front cylindrical section with a smaller diameter and a rear cylindrical section with a larger diameter, and the step surface formed at the connection between the front and rear cylindrical sections can cooperate with the step structure stopper at the rear end of the sleeve;

[0010] Alternatively, the front end surface of the sealing rubber ring can cooperate with the step structure stopper at the rear end of the sleeve.

[0011] Furthermore, the outer side of the tail end of the sealing rubber ring is a conical structure that is larger at the front and smaller at the back, and a clamping ring is adapted to be mounted on the outside of the conical structure.

[0012] Furthermore, one side of the sealing rubber ring has an opening that penetrates along the axial direction, so that the sealing rubber ring can be sleeved on the cable along the radial direction of the cable.

[0013] Furthermore, a strong mounting platform for axially limiting the connecting cap is provided on the outer peripheral wall of the sleeve.

[0014] Furthermore, the end of the hood extends to a position adjacent to the front end of the tail locking member.

[0015] Furthermore, the hood and the tail locking piece are integrally formed.

[0016] On the other hand, the utility model provides a waterproof connector, including a socket and the above-mentioned plug; the socket and the plug are connected by a snap-on or threaded connection; a rubber pad is provided at the connection between the plug and the hood, and a sealing ring is provided at the connection between the plug and the sleeve.

[0017] Beneficial effects:

[0018] As described above, the plug and waterproof connector of the utility model have the following beneficial effects:

[0019] (1) The utility model uses a tail locking piece + a compression ring to compress and seal the sealing rubber ring. The pressure generated by the movement of the tail locking piece is applied to the compression ring to compress the sealing rubber ring to achieve sealing. The compression ring is used to isolate the tail locking piece and the sealing rubber ring to prevent the sealing rubber ring from rotating with the cable. When the cable does not need to be anti-rotated, the compression ring can be removed and the rubber ring can be directly compressed by the tail locking piece. At this time, the overall length of the connector becomes smaller, and there is no need to use the spring claws in the conventional connector, and it can be repeatedly disassembled and assembled.

[0020] (2) The length of the hood is designed so that its front end can cooperate with the sleeve to lock the adapter socket (i.e., the front end has a locking function), and the rear end can extend to the front end of the tail locking member. Only when the tail locking member is removed can the hood be unlocked. Even if the operator accidentally touches the hood, the hood can be prevented from being unlocked.

[0021] (3) The utility model integrates the hood and the tail locking piece into one piece, which can realize the locking and tail sealing functions at the same time, which not only enhances the waterproof effect of the plug, but also the one-piece structure avoids the problem of separate installation of the hood and the tail locking piece, thereby reducing the difficulty of on-site installation.

[0022] (4) The utility model pre-fixes the clamping ring inside the tail locking member before assembling the plug, thereby avoiding the problem of the clamping ring falling off and repeated installation, and achieving the goal of minimizing the number of loose parts for on-site installation in an environment where the cable needs to be anti-rotated.

[0023] (5) In the present invention, the assembly end of the sleeve with the sealing rubber ring is in the shape of a step, and the step is used to cooperate with the front end face of the sealing rubber ring to stop the sealing rubber ring in the axial direction.

[0024] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0026] Figure 1 It is a structural schematic diagram of a connector in the prior art.

[0027] Figure 2 yes Figure 1 Schematic diagram of the structure of the bullet claw.

[0028] Figure 3 It is a structural schematic diagram of the plug in Example 1 of the utility model.

[0029] Figure 4 It is a schematic diagram of the structure of the plug in Example 2 of the utility model.

[0030] Figure 5 It is a structural schematic diagram of the plug in Example 3 of the utility model.

[0031] Figure 6 It is a structural schematic diagram of the connector in Example 4 of the utility model.

[0032] Figure 7 It is an exploded view of the connector in the utility model.

[0033] Figure 8 This is a diagram of the state before the connector is installed.

[0034] Fig. 9 This is a structural diagram of the connector after disassembly.

[0035] Fig.10 It is a structural diagram of the connector assembled into a semi-finished product.

[0036] Graphic mark, Figure 1-2 In the middle, 1ˊ, socket rubber pad, 2ˊ, sealing ring I, 3ˊ, inner shell, 4ˊ, sealing ring II, 5ˊ, spring claw, 6ˊ, rubber sleeve;

[0037] Figure 3-10 In the package, 1. hood, 2. sleeve, 201. mounting platform, 3. tail nut, 4. sealing rubber ring, 401. opening, 5. clamping ring, 6. inner core assembly, 7. outer shell, 8. socket. DETAILED DESCRIPTION

[0038] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings, i.e., embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0039] In the description of the present utility model, directional terms such as "up", "down", "left", "right", "front" and "back" mentioned in the text are only used to express relative position relationships relative to the drawings. When the absolute position of the object being described changes, the relative position relationship may also change accordingly.

[0040] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like 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 a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0041] The utility model provides a plug and a waterproof connector, the waterproof connector comprises a plug and a socket 8 which can cooperate with each other, the socket 8 and the plug can be connected by a card or a thread, and the plug and the socket 8 cooperate to realize the signal transmission function. The specific structure of the plug is described in detail below.

[0042] The plug includes an inner core component 6 extending axially in the front-to-back direction, a sleeve 2 mounted on the outside of the inner core component 6, and a sealing rubber ring 4 installed at the end of the sleeve 2 for sealing the cable in the inner core component 6. The front end of the outer side of the sleeve 2 is strongly equipped with a connecting cap 1, and the rear end is connected to a tail locking piece. In this embodiment, the tail locking piece is a tail nut 3. The front end of the connecting cap 1 has a shell that can lock the adapter socket 8. The sealing rubber ring 4 achieves reliable sealing under the action of the sleeve 2 and the tail nut 3.

[0043] The sealing rubber ring 4 includes a front cylindrical section with a smaller diameter and a rear cylindrical section with a larger diameter, and the step surface formed at the connection between the front and rear cylindrical sections can cooperate with the step structure stopper at the rear end of the sleeve 2. The sealing rubber ring 4 has an opening 401 on one side, so that the sealing rubber ring 4 can be sleeved on the outside of the cable along the radial direction of the cable, which is more convenient during assembly.

[0044] As a preferred embodiment of the utility model, the outer side of the end of the rear cylindrical section is a conical structure with a larger front and a smaller rear. The outer side of the conical structure of the sealing rubber ring 4 is adapted to be equipped with a clamping ring 5, which is used to assist in clamping the sealing rubber ring 4 and prevent the sealing rubber ring 4 from rotating with the tail nut 3.

[0045] It should be noted that when assembling the plug, the clamping ring 5 can be pre-fixed inside the tail nut 3 to avoid the problem of the clamping ring 5 falling off and being repeatedly installed, thereby minimizing the number of loose parts that need to be installed on-site in an environment where the cable is prevented from rotating.

[0046] Preferably, the connecting hood 1 and the tail nut 3 can be integrally formed into an integral part. For the convenience of description, the integral part is referred to as an outer shell 7. The outer shell 7 can simultaneously realize the locking and tail sealing functions, which not only enhances the waterproof effect of the plug, but also the one-piece structure avoids the problem of separate installation of the connecting hood 1 and the tail nut 3, reducing the difficulty of on-site installation.

[0047] As a preferred solution of the utility model, before assembling the connector, the clamping ring 5 can be pre-fixed at the end of the tail nut 3 or the outer shell 7, which can avoid the problem of the clamping ring 5 falling off and being repeatedly installed, and minimize the number of loose parts that need to be installed on-site in an environment where the cable is anti-rotated, thereby reducing the difficulty of on-site installation.

[0048] Preferably, a rubber pad is provided at the connection between the plug and the hood 1 of the utility model, and a sealing ring is provided at the connection between the plug and the sleeve 2 to ensure the waterproof effect of the connector.

[0049] The technical solution of the utility model is described in detail below in conjunction with specific embodiments.

[0050] Example 1

[0051] This embodiment discloses a plug, please refer to Figure 3The plug includes an inner core component 6 extending axially in the front-to-back direction, a sleeve 2 sleeved on the outside of the inner core component 6, and a sealing rubber ring 4 installed at the end of the sleeve 2 for sealing the cable in the inner core component 6. The outer part of the sleeve 2 is sequentially installed with a hood 1 and a tail nut 3 threadedly connected from front to back. The hood 1 and the front end of the sleeve 2 can lock the adapter socket 8. The tail section of the sealing rubber ring 4 is adapted to be equipped with a clamping ring 5. The tail nut 3 and the clamping ring 5 are used to compress and seal the sealing rubber ring 4. The tail nut 3 and the sleeve 2 are threadedly matched. The pressure generated by the thread movement of the tail nut 3 is applied to the clamping ring 5 to compress the sealing rubber ring 4 to achieve sealing. A step-like structure is set at the end of the sleeve 2 to axially limit the sealing rubber ring 4 to achieve reliable sealing. A strong installation platform 201 is set outside the sleeve 2 to axially limit the hood 1 to prevent the hood 1 from falling off after unlocking and avoid repeated installation. At this time, the overall length of the connector becomes smaller.

[0052] Example 2

[0053] In the plug designed in Example 1, since there is a gap between the tail nut 3 and the hood 1, the axial limit of the hood 1 is achieved by a strong mounting platform 201 provided outside the sleeve 2. If the operator has a relatively large palm, it may cause the problem of accidental touch, that is, it is impossible to accurately distinguish the operation of the hood 1 and the tail nut 3, and the on-site installation is difficult. At the same time, in the actual operation process, it is necessary to unlock the tail nut 3 first, release the cable, and then unlock the hood 1 to remove the connector from the cable. If the worker is not familiar with it, it is easy to directly unlock the hood 1, which will cause the unlocking failure. Based on this, the hood 1 is lengthened in this embodiment, please refer to Figure 4 Its front end can cooperate with the sleeve 2 to lock the adapter socket 8 (that is, the front end has a locking function), and the rear end can extend to the front end of the tail nut 3. Only when the tail nut 3 is removed, the hood 1 has space to move in the axial direction of the connector to be unlocked. Even if the operator accidentally touches the hood 1, the unlocking of the hood 1 can be avoided.

[0054] Example 3

[0055] Please refer to Figure 5 In the third embodiment, the connecting hood 1 and the tail nut 3 in the second embodiment are integrally formed to obtain an integral part, namely, the outer shell 7. The outer shell 7 can simultaneously realize the front locking and tail sealing functions, thereby avoiding the problem of separate operation of the connecting hood 1 and the tail nut 3. Moreover, the outer shell 7 can completely wrap the connector, thereby improving the waterproof effect of the connector.

[0056] Example 4

[0057] Please refer to Figure 6 and Figure 7The connector includes a socket 8 and a plug in Embodiment 3, and the plug cooperates with the socket 8 to realize the signal transmission function. A bayonet connection structure is provided between the socket 8 and the plug. A rubber pad is provided at the connection between the plug and the hood 1, and a sealing ring is provided at the connection between the plug and the sleeve 2 to ensure the waterproof effect of the connector after the plug and the socket 8 are connected.

[0058] The installation method of this connector is:

[0059] S1. Prepare one set of waterproof connector and inner core assembly for on-site installation. Please refer to Figure 8 ;

[0060] S2. Disassemble the connector, remove the dust cap, and take out the sealing rubber ring 4. The connector disassembly diagram is as follows: Fig. 9 As shown;

[0061] S3, according to the following steps, assemble the inner core component 6, sleeve 2, outer shell 7, sealing rubber ring 2 (and clamping ring 5, if any) into Fig.10 The semi-finished product shown;

[0062] S31, sleeve 2 is mounted on the inner core assembly 6,

[0063] S32, installing the outer shell 7 on the cable of the inner core component 6. If the connector further includes a clamping ring 5, the clamping ring 5 and the outer shell 7 can be installed on the cable of the inner core component 6 in sequence, or the clamping ring 5 can be pre-fixed on the tail of the outer shell 7, and the pre-fixed preform can be directly installed on the inner core component 6;

[0064] S33, side-mount the sealing rubber ring 4 on the cable of the inner core assembly 6;

[0065] It should be noted that the order of steps S31, S32 and S33 is not fixed, and different orders can be selected for assembly according to actual conditions;

[0066] S4. Connect the LC plug on the inner core component 6 to the socket. A groove is provided at the front end of the sleeve 2. A mounting block matching the groove is provided at the plug-in end of the socket housing. Push the sleeve 2 to install the groove and the mounting block in place. Then push the sealing rubber ring 4 to fit with the step structure stop at the rear end of the sleeve 2. Finally, tighten the outer shell 7 (the outer shell 7 can be threadedly connected to the socket housing, or a locking groove can be provided on the front inner wall of the outer shell 7, and a corresponding pin is provided on the mounting block. The outer shell 7 is twisted to install the pin and the locking groove in place), so that the sleeve 2 and the sealing rubber ring 4 are tightly matched and rely on the outer shell 7 to achieve a compression seal.

[0067] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0068] The above is a detailed introduction to a plug and a waterproof connector provided by the utility model. This article uses specific examples to illustrate the principle and specific implementation of the utility model. The above embodiments are only used to help understand the method and core idea of ​​the utility model. It should be pointed out that for ordinary technicians in this field, any simple modification, equivalent changes and modifications made to the above embodiments based on the technical essence of the utility model fall within the protection scope of the utility model.

Claims

1. A plug, characterized in that: The invention comprises an inner core component (6) extending axially in the front-to-back direction, a sleeve (2) sleeved on the outside of the inner core component (6), and a sealing rubber ring (4) installed at the end of the sleeve (2) for sealing the cable in the inner core component (6), wherein the rear end of the sleeve (2) is connected to a rear locking piece, and the front end of the sleeve (2) is provided with a connecting cap (1) capable of locking an adapter socket (8), and the sealing rubber ring (4) realizes reliable sealing under the action of the sleeve (2) and the rear locking piece.

2. A plug according to claim 1, characterized in that: A clamping ring (5) is also provided between the tail locking piece and the sealing rubber ring (4), and the clamping ring (5) is used to assist in clamping the sealing rubber ring (4) and prevent the sealing rubber ring (4) from rotating with the tail locking piece.

3. A plug according to claim 2, characterized in that: The clamping ring (5) is pre-fixed inside the tail locking piece.

4. A plug according to claim 2, characterized in that: The sealing rubber ring (4) comprises a front cylindrical section with a smaller diameter and a rear cylindrical section with a larger diameter, and a step surface formed at the connection between the front and rear cylindrical sections can cooperate with a step structure stopper at the rear end of the sleeve (2); Alternatively, the front end surface of the sealing rubber ring (4) can cooperate with the step structure stopper at the rear end of the sleeve (2).

5. A plug according to claim 4, characterized in that: The outer side of the tail end of the sealing rubber ring (4) is in a conical structure with a larger front and a smaller rear, and a clamping ring (5) is adapted to be mounted on the outside of the conical structure.

6. A plug according to claim 5, characterized in that: One side of the sealing rubber ring (4) has an opening (401) that penetrates along the axial direction, so that the sealing rubber ring (4) can be sleeved on the cable along the radial direction of the cable.

7. A plug according to claim 1, characterized in that: A strong mounting platform (201) for axially limiting the connecting cap (1) is provided on the outer peripheral wall of the sleeve (2).

8. A plug according to claim 1, characterized in that: The end of the hood (1) extends to the front end of the tail locking piece.

9. A plug according to claim 1, characterized in that: The connecting cap (1) and the tail locking piece are integrally formed.

10. A waterproof connector, comprising a socket (8) and the plug according to any one of claims 1 to 9; It is characterized in that The socket (8) and the plug are connected by a snap-fit ​​or threaded connection; A rubber pad is provided at the connection between the plug and the hood (1), and a sealing ring is provided at the connection between the plug and the sleeve (2).

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