Self-locking type quick connector with good protection performance

Abstract

The utility model discloses a self-locking quick coupling with good protective performance, the self-locking quick coupling with good protective performance comprises a hose and a coupling main body fixed at two ends of the hose, the coupling main body comprises a fixed sleeve and a protective sleeve, the fixed sleeve is in threaded connection with the coupling main body, and the protective sleeve is in threaded connection with the coupling main body. The protective sleeve is in threaded connection with the fixed sleeve, and the protective sleeve is provided with a plurality of elastic winding drum parts which are arranged at equal intervals from top to bottom, are connected with one another and are wound on the outer wall of the hose. According to the flexible pipe, the bending resistance of the flexible pipe is improved through the elastic winding drum part, the winding drum part also plays a role in protecting the flexible pipe, the risk that the flexible pipe cannot be recovered and is leaked due to the fact that the flexible pipe is impacted and extruded is prevented, and the flexible pipe has the advantages of being good in protection performance, bending-resistant, capable of prolonging the service life of the flexible pipe and the like.

Description

Technical Field

[0001] The utility model relates to the technical field of quick connectors, in particular to a self-locking quick connector with good protective performance. Background Art

[0002] The self-locking quick connector is a component used to connect pipes. It can be quickly connected and automatically close the valve when disconnected, ensuring the safety and reliability of the pipeline system. It usually consists of two fittings, a female connector and a male connector. There is a spring device on the female connector to control the closing and opening of the valve.

[0003] After the existing self-locking quick connector is connected to the hose, during the use of the hose such as stretching, curling, bending, etc., as the number of bending times at the connection between the hose and the self-locking quick connector increases, the hose becomes fatigued, causing its material to age, shortening the service life of the hose, and further causing leakage at the connection between the hose and the self-locking quick connector. Therefore, the applicant has made a useful design and found a solution to the above problem. The technical solution to be introduced below was produced in this context. Summary of the invention

[0004] The purpose of the utility model is to overcome the shortcomings of the above-mentioned traditional self-locking quick connector design and provide a product with good protection performance, anti-bending and extended hose service life.

[0005] To solve the above problems, the utility model adopts the following technical solutions.

[0006] A self-locking quick connector with good protective performance comprises a hose and a connector body fixed at both ends of the hose, the connector body comprises a fixed sleeve and a protective sleeve, the fixed sleeve is threadedly connected to the connector body, the protective sleeve is threadedly connected to the fixed sleeve, and the protective sleeve is provided with a plurality of elastic reel parts at equal intervals from top to bottom, which are connected to each other and wrapped around the outer wall of the hose.

[0007] Preferably, the joint body is provided with a connection port, and the outer wall of the connection port is provided with an annular expansion portion.

[0008] Preferably, the fixed sleeve is provided with a hollow column, the hollow column is sleeved on the connecting port, and the hollow column is evenly distributed with a plurality of tightening parts that can be retracted inwards around a circle as an axis.

[0009] Preferably, the inner wall of the protective sleeve is provided with a tightening surface, and abuts against the tightening portion, so that the tightening portion is tightly attached to the hose.

[0010] Preferably, the tightening surface is conical, and the shape of the winding drum portion is set to be spiral.

[0011] Preferably, the hose is sleeved on the connection port, and the inner wall of the hose abuts against the annular expansion portion.

[0012] Beneficial effects:

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] The utility model improves the bending resistance of the hose by means of the elastic reel portion, strengthens the connection reliability between the hose and the connection port, and the reel portion also protects the hose to prevent the hose from being hit or squeezed, which would cause the hose to be unable to recover and lead to the risk of leakage. The above-mentioned design overcomes the problems mentioned in the background technology, and makes the product have the advantages of good protective performance, bending resistance, and extended hose service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a structural schematic diagram of a self-locking quick connector with good protection performance according to the utility model;

[0016] Figure 2 This is an exploded view of a self-locking quick connector with good protection performance according to the utility model;

[0017] Figure 3 It is a schematic diagram of the side cross-sectional structure of a self-locking quick connector with good protection performance according to the utility model;

[0018] Figure 4 For this utility model Figure 3 A partial structure enlarged view of detail A of a self-locking quick connector with good protective performance;

[0019] The corresponding relationship between the illustrations and component names in the figure is as follows:

[0020] Figure numerals: 1, hose; 2, connector body; 3, fixed sleeve; 4, protective sleeve; 21, connection port; 22, annular expansion portion; 31, hollow column; 32, tightening portion; 41, reel portion; 42, tightening surface. DETAILED DESCRIPTION

[0021] The technical solution of the utility model will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by the terms "up", "down", "left" and "right" are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0023] Reference example Figures 1 to 4 A self-locking quick connector with good protective performance comprises a hose 1 and a connector body 2 fixed at both ends of the hose 1, the connector body 2 comprises a fixed sleeve 3 and a protective sleeve 4, the fixed sleeve 3 is threadedly connected to the connector body 2, the protective sleeve 4 is threadedly connected to the fixed sleeve 3, the protective sleeve 4 is provided with a plurality of elastic reel portions 41 with equal spacing from top to bottom, and the reel portions 41 are connected to each other and wound around the outer wall of the hose 1, the reel portions 41 with elasticity improve the bending resistance of the hose 1, and strengthen the connection reliability between the hose 1 and the connection port 21, and the reel portions 41 also play a role in protecting the hose 1, preventing the hose 1 from being hit or squeezed, causing the hose 1 to be unable to recover, resulting in the risk of leakage, and the above-mentioned design overcomes the problems mentioned in the background technology;

[0024] It is worth mentioning that the connector body 2 is provided with a connection port 21, and the outer wall of the connection port 21 is provided with an annular expansion portion 22, and the connection port 21 is connected to the hose 1, and the diameter of the inner wall of the hose 1 is expanded by the annular expansion portion 22, and then connected and fixed to the hose 1 by interference fit;

[0025] It is worth mentioning that the fixed sleeve 3 is provided with a hollow column 31, which is sleeved on the connection port 21. The hollow column 31 is evenly distributed with a plurality of tightening parts 32 that can be retracted inwardly with the dot as the axis. The hollow column 31 protects the hose 1 inside. The tightening part 32 mainly serves to strengthen the fixation of the hose 1 to prevent excessive pressure in the hose 1, which causes the connection between the hose 1 and the connection port 21 to become loose.

[0026] It is worth mentioning that the inner wall of the protective sleeve 4 is provided with a tightening surface 42, which abuts against the tightening portion 32, so that the tightening portion 32 is closely attached to the hose 1. When the protective sleeve 4 is tightened, as the protective sleeve 4 gradually approaches the distance between the fixed sleeve 3, the tightening surface 42 causes the tightening portion 32 to shrink inward, and the rotational force causes the tightening portion 32 to be closely attached to the hose 1 at an inclined angle, thereby increasing the contact area between the tightening portion 32 and the hose 1, thereby further improving the connection reliability between the connector body 2 and the hose 1.

[0027] It is worth mentioning that the tightening surface 42 is conical, and the shape of the reel portion 41 is set to be spiral. The conical shape makes the diameter of the tightening surface 42 wider at the top and narrower at the bottom, and the spiral shape generates a pitch between the reel portions 41. When the hose 1 bends, the pitch stores energy and resists the bending force, thereby improving the bending resistance of the hose 1.

[0028] It is worth mentioning that the hose 1 is sleeved on the connection port 21 , and the inner wall of the hose 1 abuts against the annular expansion portion 22 .

[0029] The above design scheme can enable the product to achieve the advantages of good protection performance, anti-bending and extended hose service life.

[0030] The above content is a further detailed description of the utility model in combination with specific implementation methods. It cannot be determined that the specific implementation of the utility model is limited to these descriptions. For ordinary technicians in the technical field to which the utility model belongs, without departing from the concept of the utility model, they can also make several simple deductions or substitutions, which should be regarded as belonging to the scope of protection determined by the claims submitted for the utility model.

Claims

1. A self-locking quick connector with good protective performance, comprising a hose (1) and a connector body (2) fixed at both ends of the hose (1), characterized in that: The joint body (2) comprises a fixed sleeve (3) and a protective sleeve (4); the fixed sleeve (3) is threadedly connected to the joint body (2); the protective sleeve (4) is threadedly connected to the fixed sleeve (3); the protective sleeve (4) is provided with a plurality of elastic reel portions (41) at equal intervals from top to bottom, which are connected to each other and are wound around the outer wall of the hose (1).

2. The self-locking quick connector with good protection performance according to claim 1, characterized in that: The joint body (2) is provided with a connection port (21), and the outer wall of the connection port (21) is provided with an annular expansion portion (22).

3. The self-locking quick connector with good protection performance according to claim 2, characterized in that: The fixed sleeve (3) is provided with a hollow column (31), the hollow column (31) is sleeved on the connection port (21), and the hollow column (31) is evenly distributed with a plurality of tightening parts (32) that can be retracted inwards, with a circular point as the axis.

4. The self-locking quick connector with good protection performance according to claim 3 is characterized in that: The inner wall of the protective sleeve (4) is provided with a tightening surface (42) which abuts against the tightening portion (32) so that the tightening portion (32) is tightly attached to the hose (1).

5. The self-locking quick connector with good protection performance according to claim 4, characterized in that: The tightening surface (42) is conical, and the winding drum portion (41) is configured to be spiral.

6. The self-locking quick connector with good protection performance according to claim 2, characterized in that: The hose (1) is sleeved on the connection port (21), and the inner wall of the hose (1) abuts against the annular expansion portion (22).

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