Quick cable connector with double waterproof functions

Abstract

The utility model discloses a quick cable connector with a dual waterproof function, which comprises a plug and a socket which can be quickly plugged, the plug and the socket are fixed through a U-shaped pin after being plugged, the rear part of the plug is sleeved with a plug transition sleeve, and the outer side of the joint of the plug and the socket is sleeved with a protective rubber sleeve. An annular first clamping groove is formed in the outer circumference of the socket at the front end of the U-shaped pin, the front end of the protective rubber sleeve is clamped in the first clamping groove, a second clamping groove is formed in the outer circumference of the middle of the plug transition sleeve, the rear end of the protective rubber sleeve is clamped in the second clamping groove, and a stretchable corrugated structure is arranged in the middle of the protective rubber sleeve. The quick-connection plug is simple in structure and convenient to operate, the plurality of sealing rings are arranged inside and outside the quick-connection plug, the elastic protective rubber sleeve capable of being stretched is sleeved on the outer side of the quick-connection plug, and the waterproof sealing performance of the quick-connection plug can be greatly improved through the double-layer waterproof and dustproof structure.

Description

Technical Field

[0001] The utility model belongs to the technical field of cable connection, and relates to a quick cable connector with a dual waterproof function. Background Art

[0002] As a transportation tool with low cost and high efficiency, belt conveyors are increasingly widely used in coal mines. To ensure the safety of coal mine production, it is generally required to install emergency stop protection switches along the belt conveyor to achieve the emergency stop function in case of a failure, and the installation spacing of the emergency stop switches shall not be greater than 100 meters.

[0003] As the distance of the belt conveyor extends, the number of emergency stop switches along the line will also increase. A large number of emergency stop switches need to be connected in series through communication cables and uniformly connected to the protection controller at the head of the belt. The protection controller conducts data communication through the communication cable to obtain the status of each emergency stop switch along the line, so as to realize the monitoring of the manual emergency stop behavior along the belt conveyor.

[0004] The common cable connection method in the prior art is on-site cable wiring. The cable insulation is stripped, and the emergency stop switch is opened to electrically connect the cable core wire with the emergency stop switch circuit inside. The disadvantage of this connection method is that the operation is cumbersome, the difficulty is high, and the failure rate is high. The patent number is CN202023263634.6, and the patent name is "A Patent for a Cable Interface Mechanism", which is a quick connection structure of the cable developed by the applicant. The two ends of the cable can be directly plugged and unplugged to achieve the quick connection of the cable.

[0005] Since the cable can be quickly plugged and unplugged, there may be some potential safety hazards in the waterproof and airtight performance during operation and use. It is of great significance to design a cable connector that is not only convenient for on-site connection but also effectively waterproof. Summary of the Invention

[0006] In view of this, the purpose of the utility model is to provide a quick cable connector with a dual waterproof function that can solve the above problems.

[0007] To achieve the above purpose, the utility model provides the following technical solutions:

[0008] A quick cable connector with a dual waterproof function includes a plug and a socket that can be quickly plugged and unplugged. After the plug and the socket are plugged, they are fixed by a U-shaped pin. A plug transition sleeve is sleeved on the rear part of the plug. An outer circumference of the connection part between the plug and the socket is sleeved with a protective rubber sleeve. An annular slot one is opened on the outer circumference of the socket at the front end of the U-shaped pin, and the front end of the protective rubber sleeve is stuck in the slot one. A slot two is arranged on the outer circumference of the middle part of the plug transition sleeve, and the rear end of the protective rubber sleeve is stuck in the slot two. A stretchable corrugated structure is arranged in the middle of the protective rubber sleeve.

[0009] Furthermore, annular protrusion one and annular protrusion two which are spaced apart are arranged at the middle part of the plug transition sleeve. A clamping groove two is formed between annular protrusion one and annular protrusion two. An annular sleeve integrally formed therewith is arranged at the rear end of the protective rubber sleeve. The annular sleeve is clamped between annular protrusion one and annular protrusion two.

[0010] Furthermore, the pin is fixed in the socket, the wire spring is fixed in the plug, and the pin and the wire spring can be inserted and matched with each other.

[0011] Furthermore, the socket is installed on the housing of the emergency stop switch through the installation thread of the socket. A sealing ring groove one is arranged on the outer circumference of the bottom of the installation thread part of the socket for placing the sealing ring one.

[0012] Furthermore, a sealing ring groove two is formed on the outer circumferential wall of the plug at the end close to the socket of the plug-in part of the plug. The sealing ring groove two is used for installing the sealing ring two.

[0013] Furthermore, the plug and the socket are respectively processed from brass and their surfaces are respectively treated by nickel plating.

[0014] Furthermore, the protective rubber sleeve is made of ethylene propylene diene monomer.

[0015] The beneficial effects of the utility model are as follows:

[0016] The utility model has a simple structure and is convenient to operate. While a plurality of sealing rings are arranged inside and outside the quick-connect plug, an elastic protective rubber sleeve which can be stretched is sleeved outside the quick-connect plug. The double-layer waterproof and dustproof structure can greatly improve the waterproof and sealing performance of the quick-connect plug. When simply inserting and unplugging the quick-connect plug, this action can be completed inside the protective rubber sleeve, that is, the outside world is not contacted during the plugging and unplugging process, and the dustproof and waterproof performance of the quick-connect plug is greatly improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The drawings constituting a part of the present utility model are used to provide a further understanding of the present utility model. The schematic embodiments and descriptions thereof of the present utility model are used to explain the present utility model and do not constitute an improper limitation to the present utility model. In the drawings:

[0018] Figure 1 is a cross-sectional view of an embodiment of the present utility model;

[0019] Figure 2 is a schematic three-dimensional structure diagram of an embodiment of the present utility model;

[0020] Figure 3 is a schematic structure diagram of an embodiment of the present utility model with the protective rubber sleeve removed.

[0021] Description of the reference numerals:

[0022] 1. Socket; 11. Pin; 12. First sealing ring; 13. First clamping groove; 2. U-shaped pin; 3. Plug; 31. Plug transition sleeve; 32. Wire spring; 33. Second sealing ring; 34. First annular protrusion; 35. Second annular protrusion; 36. Second clamping groove; 4. Protective rubber sleeve; 41. Annular sleeve; 42. Corrugated structure. Detailed implementation manners

[0023] It should be noted that, without conflict, the embodiments in the present utility model and the features in the embodiments may be combined with each other.

[0024] In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. 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 thus cannot be understood as a limitation to the present utility model. In addition, the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first", "second", etc. may explicitly or implicitly include one or more of such features. In the description of the present utility model, unless otherwise specified, the meaning of "a plurality" is two or more.

[0025] In the description of the present utility model, it should be noted that unless otherwise clearly defined and limited, the terms "installed", "connected", "connected with" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the internal connection of 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 through specific situations.

[0026] The present utility model will be described in detail below with reference to the drawings and in conjunction with the embodiments.

[0027] As Figures 1 to 3As shown in the figure, a fast cable connector with dual waterproof functions includes a plug 3 and a socket 1 that can be quickly plugged. The plug 3 and the socket 1 are respectively made of brass and their surfaces are respectively treated with nickel plating. A plug transition sleeve 31 is sleeved at the rear of the plug 3. The pins 11 are installed in the socket 1, and the wire springs 32 are installed in the plug 3. The advantages of using the form of pins 11 and wire springs 32 for connection are small insertion and extraction force, small contact resistance, and high reliability. The pins 11 and the wire springs 32 are respectively fixedly installed in the socket 1 and the plug 3 through ABS fixing seats. The socket 1 is installed on the emergency stop switch housing through the installation thread of the socket 1. A first sealing ring groove is provided at the bottom of the installation thread part of the socket 1, which can be used to place the first sealing ring 12 for waterproofing.

[0028] On the outer circumferential wall of the plug 3 at the end close to the socket 1 of the insertion part of the plug 3, a second sealing ring groove is opened, and the second sealing ring groove is used to install the second sealing ring 33. When the plug 3 is inserted into the socket 1 and locked with the U-shaped pin 2, the second sealing ring 33 on the plug 3 is pressed against the rubber sealing ring in the socket 1 to form an inner waterproof structure to block external water vapor from entering the electrical connection.

[0029] The first sealing ring 12 and the second sealing ring 33 can use nitrile rubber sealing rings.

[0030] An outer layer waterproof structure of the cable connector is that an ethylene propylene diene monomer (EPDM) protective rubber sleeve 4 is sleeved outside the plug 3 and the socket 1.

[0031] The protective rubber sleeve 4 is installed on the outside of the connection between the plug 3 and the socket 1. Since the U-shaped pin 2 is provided at the socket 1, the protective rubber sleeve 4 has a structure feature of being large at one end and small at the other end.

[0032] On the outer circumference of the socket 1 at the rear of the first sealing ring groove, an annular first clamping groove 13 is opened, and the large end of the protective rubber sleeve 4 is clamped in the first clamping groove 13. At the middle part of the plug transition sleeve 31, an annular first protrusion 34 and an annular second protrusion 35 are arranged at intervals, and a second clamping groove 36 is formed between the annular first protrusion 34 and the annular second protrusion 35. At the small end of the protective rubber sleeve 4, an annular sleeve 41 integrated with it is provided, and the annular sleeve 41 is clamped between the annular first protrusion 34 and the annular second protrusion 35. The annular first protrusion 34 and the annular second protrusion 35 form a limiting function for the annular sleeve 41, and at the same time, a dust-proof sealing structure at the small end of the protective rubber sleeve 4 is realized.

[0033] The middle part of the protective rubber sleeve 4 is set as a corrugated structure 42. The design of the corrugated structure 42 enables the protective rubber sleeve 4 to have an elastic function, so that the protective rubber sleeve 4 can be stretched and lengthened or compressed and shortened, and the corrugated structure 42 automatically recovers after the pulling force or pressure disappears.

[0034] Working principle of the utility model:

[0035] When two cables are quickly plugged in, the small end of the protective rubber sleeve 4 is sleeved into the second card slot 36 on the plug transition sleeve 31, and the plug 3 and the socket 1 are plugged. After the plug 3 and the socket 1 are connected by the U-shaped pin 2, then the large end of the protective rubber sleeve 4 is pulled to the socket 1 end and sleeved into the first card slot 13 on the socket 1. In this way, the protective rubber sleeve 4 wholly sleeved the joint part of the plug 3 and the socket 1, and its large and small ends are respectively fastened in the first card slot 13 and the second card slot 36 through the shrinkage force of the rubber, realizing the outer waterproof function of the cable connector.

[0036] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A fast cable connector with a dual waterproof function, characterized in that: It includes a plug (3) and a socket (1) that can be quickly plugged in. After the plug (3) and the socket (1) are plugged in, they are fixed by a U-shaped pin (2). A plug transition sleeve (31) is sleeved on the rear part of the plug (3). A protective rubber sleeve (4) is sleeved on the outside of the connection between the plug (3) and the socket (1). An annular first clamping groove (13) is formed on the outer circumference of the socket (1) at the front end of the U-shaped pin (2). The front end of the protective rubber sleeve (4) is clamped in the first clamping groove (13). An annular second clamping groove (36) is provided on the outer circumference of the middle part of the plug transition sleeve (31). The rear end of the protective rubber sleeve (4) is clamped in the second clamping groove (36). A stretchable corrugated structure (42) is provided in the middle of the protective rubber sleeve (4).

2. The quick cable connector with a dual waterproof function according to claim 1, characterized in that: An annular first protrusion (34) and an annular second protrusion (35) are provided at intervals in the middle of the plug transition sleeve (31). A second clamping groove (36) is formed between the annular first protrusion (34) and the annular second protrusion (35). An annular sleeve (41) integrated with the protective rubber sleeve (4) is provided at the rear end of the protective rubber sleeve (4). The annular sleeve (41) is clamped between the annular first protrusion (34) and the annular second protrusion (35).

3. The quick cable connector with dual waterproof functions according to claim 1, wherein: The pin (11) is fixed in the socket (1), and the wire spring (32) is fixed in the plug (3). The pin (11) and the wire spring (32) can be plugged and matched with each other.

4. The quick cable connector with dual waterproof functions according to claim 1, characterized in that: The socket (1) is installed on the housing of the emergency stop switch through the installation thread of the socket (1). An annular first sealing ring groove is provided on the outer circumference of the bottom of the installation thread part of the socket (1) for placing the first sealing ring (12).

5. The quick cable connector with a dual waterproof function according to claim 1, characterized in that: A second sealing ring groove is formed on the outer circumferential wall of the plug (3) at the end of the plugging part of the plug (3) close to the socket (1). The second sealing ring groove is used for installing the second sealing ring (33).

6. The quick cable connector with a dual waterproof function according to claim 1, wherein: The plug (3) and the socket (1) are respectively made of brass and their surfaces are respectively treated by nickel plating.

7. The quick cable connector with a dual waterproof function according to claim 1, wherein: The protective rubber sleeve (4) is made of ethylene propylene diene monomer (EPDM).

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