Safety connector

Abstract

A safety connector comprises a shell, a threaded sleeve and an adapter, the adapter is arranged in the shell, the threaded sleeve is fixed at the tail end of the shell, and the safety connector is characterized in that a tail hole in the rear end of the shell is provided with an internal thread, and the corresponding threaded sleeve is provided with an external thread, so that most of a main body of the threaded sleeve is fixed in the shell, and a small part of the main body of the threaded sleeve is exposed out of the shell. And therefore, the contactable length of the threaded sleeve is reduced, the huge risk caused by misoperation of an operator is prevented, the structure is reliable, the cost is low, and higher safety is achieved.

Description

Technical Field

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

[0002] Cable connectors are mainly used between various transmission devices such as distribution frames and digital switches. Nowadays, we also use them in communication devices such as audio transmission, video transmission, and communication transmission. After the cable connectors on the market are assembled, the entire outer wall of the screw sleeve is exposed outside, and the screw sleeve can be completely grasped by hand, and the screw sleeve can be unscrewed by hand. During use, there is a potential risk of human error. The connector can be opened by hand. When the connector is connected to high voltage and large current, there are safety hazards. Therefore, there is a need in the market for a connector that is not easily touched and opened by operators, so as to eliminate the idea of operators opening it by hand.

[0003] After investigation, the patent number CN202222286856.2 discloses a plug, which includes a plug housing, a tail sleeve and a button. An installation groove for the sliding member to be inserted and move back and forth is axially formed on the upper end surface of the middle part of the plug housing. A through hole for the front end of the sliding member to extend out is opened at the front end of the installation groove. The front end of the sliding member extends out of the installation groove to form a locking portion that cooperates with the corresponding socket / plug for locking. The rear end of the sliding member extends upward with an inclined surface and bends forward to form a claw portion that cooperates with the button for connection. A return spring is supported between the inner wall of the rear end of the installation groove and the rear end of the sliding member. The button is arranged in the installation groove above the sliding member. The rear end of the button is hinged to the rear end of the installation groove. The front end of the button bends to form a hook portion that cooperates with and abuts against the claw portion. A button sleeve that is hermetically sleeved with the installation groove is provided on the upper end of the button. The utility model also discloses a related connector. The structure of the utility model is simple and reasonable, can realize quick plugging and unplugging, has firm and stable locking, good waterproof performance, and at the same time, the button is not easy to fall off and is very convenient for disassembly and assembly. However, when the connector is connected to high voltage, if the operator operates wrongly, the screw sleeve can be directly unscrewed by hand, which is very likely to cause huge safety hazards. Summary of the Invention

[0004] The utility model mainly proposes a safety connector for the problems of the existing technology, reduces the contact area of the screw sleeve that can be touched, prevents huge risks caused by operator's operation errors, has a reliable structure, low cost and is safer.

[0005] The technical solution of the utility model is: a safety connector, which includes a housing, a screw sleeve and an adapter. The housing contains the adapter, and the screw sleeve is fixed at the tail end of the housing. It is characterized in that the inner thread is provided in the tail hole at the rear end of the housing, and the corresponding screw sleeve is provided with an external thread, so that most of the main body of the screw sleeve is fixed in the housing, and only a small part of the main body of the screw sleeve can be exposed outside the housing, so that it is not enough to apply force by hand to turn it.

[0006] Further improvement: The small part of the main body of the screw sleeve accounts for within 25% of the total length of the connector, and more preferably within 15%. Alternatively, the length of the small part of the main body of the screw sleeve is within 17.5 mm, and more preferably within 10 mm.

[0007] Further improvement: The housing includes a front-end housing and a rear-end housing, and the diameter of the rear-end housing is larger than that of the front-end housing.

[0008] Further improvement: The front-end housing and the rear-end housing are an integrally formed integral housing. Alternatively, the front-end housing and the rear-end housing are separately formed sub-components, and then assembled and connected into an integral housing.

[0009] Further improvement: A rotating part is provided on the outer wall of the small part of the main body of the screw sleeve, and the rotating part is polygonal, so that it can only be screwed with a tool.

[0010] Finally: A wire clamping section is fixed in the rear-end housing, and the corresponding wire clamping section is matched with the adapter and positions and fixes the adapter.

[0011] Compared with the prior art, the advantages of this product are as follows: Most of the main body of the screw sleeve is fixed in the rear-end housing, and only a small part of the main body of the screw sleeve is exposed outside the housing, so that it is not enough to apply force by hand to screw it, and a corresponding tool is required to screw the screw sleeve, thus preventing the operator from directly screwing it by hand and causing accidental risks. The structure is simple, the cost is low, and the safety is improved. Description of the Drawings

[0012] Figure 1 is a three-dimensional schematic diagram of the present utility model,

[0013] Figure 2 is a side view of the present utility model,

[0014] Figure 3 is a cross-sectional view of the present utility model,

[0015] Figure 4 is a disassembled three-dimensional schematic diagram of the present utility model,

[0016] Figure 5 is an exploded view of the present utility model,

[0017] In the figure, 1. housing, 2. screw sleeve, 3. adapter, 4. internal thread, 5. external thread, 6. front-end housing, 7. rear-end housing, 8. rotating part, 9. sealing ring, 10. wire clamping section, 21. large part of the main body, 22. small part of the main body. Detailed Embodiments

[0018] The following further describes in detail the implementation manner of the utility model patent in conjunction with the accompanying drawings and embodiments. The following embodiments are used to illustrate the utility model patent, but cannot be used to limit the scope of the utility model patent. In the description of the utility model patent, unless otherwise specified, the meaning of "a plurality" is two or more; the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the utility model patent 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 to the utility model patent. In addition, the terms "first", "second", "third", etc. are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0019] In the description of the utility model patent, it should be noted that, unless otherwise clearly specified and defined, the terms "connected" and "connected" 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. For those of ordinary skill in the art, the specific meanings of the above terms in the utility model patent can be understood according to specific circumstances.

[0020] The following further describes the utility model in detail in conjunction with the embodiments of the accompanying drawings.

[0021] According to Figures 1 to 5 , a safety connector includes main components such as a housing 1, a nut sleeve 2, an adapter 3, etc. The adapter 3 is located inside the housing 1, and the nut sleeve 2 is fixed to the tail end of the housing 1. The key lies in that an internal thread 4 is provided in the tail hole at the rear end of the housing 1, and an external thread 5 is provided on the outside of the corresponding nut sleeve 2, so that most of the main body 21 of the nut sleeve 2 is fixed inside the housing 1, and only a small part 22 of the main body of the nut sleeve 2 can be exposed outside the housing 1, so that it is not enough to apply force by hand to turn it.

[0022] The small part 22 of the main body of the nut sleeve 2 accounts for within 25% of the total length of the connector, and more preferably within 15%. Only a small part of the nut sleeve 2 is exposed outside. The length of the small part 22 of the main body of the nut sleeve 2 is controlled within 17.5 mm, and more preferably within 10 mm. A rotating part 8 is provided on the outer wall of the small part 22 of the main body of the nut sleeve 2. Usually, the rotating part 8 adopts a regular polygon such as a regular hexagon, so that it can only be turned by using a tool such as a wrench. It is very difficult to obtain a torque of more than 2.0 N·m by simply turning it by hand, thus preventing workers from making wrong operations. When the connector is under high voltage and high current, it is also directly used to turn the nut sleeve 2 by hand, thus causing a safety accident.

[0023] The housing 1 includes a front housing 6 and a rear housing 7. Generally, the diameter of the rear housing 7 is larger than that of the front housing 6. The front housing 6 and the rear housing 7 can be an integrally formed integral housing, made into an integral part by metal forming or plastic forming processes, or the front housing 6 and the rear housing 7 are separately formed sub-components, and then assembled and connected into an integral housing, which is convenient for the production and assembly of various metal connectors inside to form the adapter 3. A wire clamp section 10 is fixed in the rear housing 7. The corresponding wire clamp section 10 is matched with the adapter 3 and positions and fixes the adapter 3. A sealing ring 9 is fixed between the rear housing 7 and the screw sleeve 2 to prevent water from entering the connector. The drawings and embodiments take the front housing 6 and the rear housing 7 as an integrally formed integral housing as an example.

[0024] When the user installs and removes the connector using this product, first insert the adapter 3 into one end of the housing 1, then insert the other section of the cable into the other end of the housing 1, then align the screw sleeve 2 with the tail hole of the rear housing 7, screw the screw sleeve 2 along the thread, and then use a tool wrench to rotate the rotating part 8 to tighten the screw sleeve 2 and the rear housing 7, thus completing the installation. When the worker needs to remove the connector, since the length of the screw sleeve 2 exposed outside is too short, the worker gives up the idea of directly contacting and turning it by hand, thereby reducing the risk of accidents. The worker needs to align the tool wrench with the rotating part 8, then turn the screw sleeve 2 out of the rear housing 7, and then remove the housing 1 from the adapter 3 to complete the removal.

Claims

1. A safety connector, comprising a housing, a screw sleeve, and an adapter, wherein the housing has an adapter, and a screw sleeve is fixed at the rear end of the housing, characterized in that The rear end hole of the shell is provided with an internal thread, and the corresponding screw sleeve is provided with an external thread, so that most of the main body of the screw sleeve is fixed in the shell, and only a small part of the main body of the screw sleeve can be exposed outside the shell, so that it is not enough to twist it by hand.

2. A safety connector according to claim 1, characterized in that The main body portion of the screw sleeve accounts for less than 25% of the total length of the connector.

3. A safety connector according to claim 2, characterized in that The main body portion of the screw sleeve accounts for less than 15% of the total length of the connector.

4. A safety connector according to claim 1, characterized in that The length of the main body small part of the screw sleeve is within the range of 17.5mm.

5. A safety connector according to claim 4, characterized in that The length of the main body small part of the screw sleeve is within the range of 10mm.

6. A safety connector according to claim 1, characterized in that The shell comprises a front shell and a rear shell, and the diameter of the rear shell is larger than that of the front shell.

7. A safety connector according to claim 6, characterized in that The front end shell and the rear end shell are integral shells formed in one piece.

8. A safety connector according to claim 6, characterized in that The front end shell and the rear end shell are sub-components formed by separate parts, and then assembled and connected to form an integral shell.

9. A safety connector according to claim 1, characterized in that A rotating part is arranged on the outer wall of a small part of the main body of the screw sleeve, and the rotating part is polygonal so that it can only be screwed by using a tool.

10. A safety connector according to claim 6, characterized in that A wire clamp section is fixed in the rear end housing, and the corresponding wire clamp section matches the adapter and positions and fixes the adapter.

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