Pneumatic quick plug connector

Abstract

The utility model discloses a pneumatic quick-plug connector, which comprises an elbow, a connector and a quick-plug assembly, the quick-plug assembly comprises a sleeve, a lining and a button which are sequentially arranged from inside to outside, the lining is fixedly arranged in the elbow, the button is arranged in the lining in a sliding manner, a limiting step is arranged on the inner wall of the elbow, and a space is formed between the limiting step and the lining. The sleeve is arranged in the space in a sliding mode, a first limiting protrusion is arranged on the outer wall of the sleeve and matched with the limiting step in a limiting mode, a tip part is arranged at the first end of the button, a first arc face is arranged at the end, making contact with the sleeve, of the tip part, a second arc face is arranged on the sleeve, and the tip part is elastic and can expand outwards along the second arc face. A first gap is reserved between the sleeve and the lining, the first gap forms a deformation area allowing the tip part to deform, a first limiting structure is arranged between the tip part and the lining in a matched mode, a second limiting structure is arranged on the inner wall of the button, the air pipe can be rapidly connected and pulled out, operation is easy, and time is saved.

Description

TECHNICAL FIELD

[0001] The utility model relates to pneumatic joint technical field, especially pneumatic quick plug joint. BACKGROUND

[0002] Pneumatic quick plug joint is a device for quickly connecting and disconnecting pneumatic pipeline, and is widely used in various pneumatic systems. Its original design is to realize quick and firm pipeline connection, greatly improving the efficiency of installation and maintenance, and being suitable for various working environments and scenes. Its convenient plug-in design enables users to connect and disconnect the pipeline without using additional tools, simplifying the operation process, and is especially suitable for devices that need to be frequently replaced or debugged, for example, a quick plug joint with cutoff function disclosed in Chinese patent application (publication number: CN213929877U) includes an elbow, a joint and a quick plug joint. The joint is threadedly connected to one end of the elbow. The quick plug joint includes a quick plug socket connected to the other end of the elbow. The quick plug socket is provided with a mounting step. The mounting step is sequentially provided with a sealing ring, a pressure ring, a reed and a sleeve ring. The sleeve ring is fixed in the quick plug socket, so that the sealing ring, the pressure ring and the reed are pressed on the mounting step. The sleeve ring is sleeved with a slidingly matched button. The inner side of the button is in abutment with the reed. When the gas pipe needs to be pulled out, pressing the button makes the inner diameter of the reed larger, facilitating the pulling out of the gas pipe. However, the reed is prone to deformation during installation due to extrusion, affecting the service life of the quick plug joint. Moreover, the quick plug joint with cutoff function has a complex internal structure and many parts, resulting in high production cost. Therefore, it is necessary to improve it. CONTENT OF THE UTILITY MODEL

[0003] The utility model aims at the defects and deficiencies of the prior art, and provides a pneumatic quick plug joint, which has a simple and reasonable structure and is easy to operate. When the gas pipe needs to be pulled out, the user only needs to press the button, and the pointed end will expand outward along the second arc, so that the gas pipe can be smoothly pulled out. When the gas pipe is inserted, the button does not need to be pressed, so that the gas pipe can be quickly connected and pulled out. The operation is simple and time-saving.

[0004] To achieve the above-mentioned purpose, the utility model adopts the following technical scheme:

[0005] The utility model relates to a pneumatic quick plug connector, including the elbow, the connector of setting in the first end of the elbow and the quick plug assembly of setting in the second end of the elbow, the quick plug assembly includes the sleeve, the bushing and the button that set gradually from inside to outside, the bushing is fixed in the elbow, the button is slidably arranged in the bushing, the inner wall of the elbow is equipped with the limit step, the limit step and the bushing form the space, the sleeve is slidably arranged in the space, the outer wall of the sleeve is equipped with the first limit protruding, and the first limit protruding is limited with the limit step, the first end of the button is equipped with the pointed end portion that resists with the sleeve, the pointed end portion and the sleeve contact one end is equipped with the first camber, the sleeve is equipped with the second camber with the first camber cooperation, the pointed end portion has the elasticity and can expand outward along the second camber, the first gap is left between the sleeve and the bushing, the first gap forms the deformation area for the pointed end portion deformation, the pointed end portion and the bushing are equipped with the first limit structure cooperation, and the button is pulled out, the inner wall of the button is also equipped with the second limit structure.

[0006] Further, the first limit structure includes a second limit protrusion provided on the outer wall of the pointed end portion and a limit groove provided on the sleeve, and the second limit protrusion is limited with the limit groove.

[0007] Further, the second limit structure includes a plurality of limit blocks provided on the inner wall of the button in the circumferential direction, one end of the limit block away from the sleeve is provided with a first inclined surface, and one end of the limit block close to the sleeve is provided with a second inclined surface, and the inclination angle of the first inclined surface is smaller than the inclination angle of the second inclined surface.

[0008] Further, the first end of the button is provided with a plurality of plug-in portions in the circumferential direction, and a second gap is left between two adjacent plug-in portions, one end of the plug-in portion close to the sleeve is provided with the pointed end portion, and the inner wall of the plug-in portion is provided with the second limit structure.

[0009] Further, a Y-shaped sealing ring is further provided in the elbow, a first mounting step limiting matched with the Y-shaped sealing ring is provided in the elbow, the sleeve is arranged between the Y-shaped sealing ring and the bushing, and the opening of the Y-shaped sealing ring is arranged away from the sleeve.

[0010] Further, an annular protrusion is arranged on the end face of the Y-shaped sealing ring close to the sleeve.

[0011] Further, the second end of the button is provided with a step portion limiting matched with the elbow.

[0012] Further, the button is made of a plastic piece.

[0013] Further, an O-shaped ring is arranged between the connector and the elbow, and a second mounting step corresponding matched with the O-shaped ring is arranged on the connector.

[0014] Further, a C-shaped ring is arranged between the joint and the elbow, and a third mounting step corresponding to the C-shaped ring is arranged on the joint.

[0015] The pneumatic quick plug joint has the advantages that the first end of the button is provided with a pointed end portion in abutting cooperation with the sleeve, one end of the pointed end portion in contact with the sleeve is provided with a first arc surface, the sleeve is provided with a second arc surface in cooperation with the first arc surface, the pointed end portion has elasticity and can expand outward along the second arc surface, the button is made of a plastic piece which can be deformed when subjected to external force, a first gap is left between the sleeve and the bushing, the first gap forms a deformation area for the pointed end portion, the first end of the button is provided with a plurality of plug-in portions in the circumferential direction, a second gap is left between the adjacent two plug-in portions, the second gap can provide a certain space for deformation, avoids damage of the button, and the button can be more easily installed into the elbow, one end of the plug-in portion close to the sleeve is provided with the pointed end portion, the second limiting structure is arranged on the inner wall of the plug-in portion, the second limiting structure comprises a plurality of limiting clamping blocks arranged on the inner wall of the button in the circumferential direction, the limiting clamping blocks cooperate with the air pipe, one end of the limiting clamping blocks away from the sleeve is provided with a first inclined surface, one end of the limiting clamping blocks close to the sleeve is provided with a second inclined surface, the inclination angle of the first inclined surface is smaller than that of the second inclined surface, the first inclined surface is gentle, and the second inclined surface is steep, the air pipe is easy to pass through the first inclined surface when being inserted, but is subjected to greater resistance when being pulled out due to the steepness of the second inclined surface, so that the air pipe is easy to be inserted but not easy to be pulled out, and the stability and reliability of connection are ensured. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 is a structural schematic diagram of the utility model;

[0017] Figure 2 is a sectional structure schematic diagram of the utility model;

[0018] Figure 3 is Figure 2 enlarged structure schematic diagram of A in the figure;

[0019] Figure 4 is an exploded structure schematic diagram of the utility model;

[0020] Figure 5 is a structure schematic diagram of the button in the first visual angle;

[0021] Figure 6is a structural schematic view of the button in the second perspective view;

[0022] Figure 7 is a sectional structural schematic view of the button;

[0023] Figure 8 is a sectional structural schematic view of the bushing;

[0024] Figure 9 is a sectional structural schematic view of the elbow;

[0025] Figure 10 is a structural schematic view of the bushing;

[0026] Figure 11 is a sectional schematic view of the bushing.

[0027] Figures 1-11 In the figure: 1, elbow; 11, limiting step; 12, first mounting step; 2, joint; 21, second mounting step; 22, third mounting step; 3, sleeve; 31, first limiting protrusion; 32, second arc surface; 4, bushing; 41, limiting groove; 5, button; 51, plug-in part; 511, pointed end part; 5111, first arc surface; 5112, second limiting protrusion; 512, limiting clamping block; 5121, first inclined surface; 5122, second inclined surface; 513, second gap; 52, step part; 6, Y-shaped sealing ring; 61, annular protrusion; 7, O-shaped ring; 8, C-shaped ring. DETAILED DESCRIPTION

[0028] The utility model will be further explained in connection with the drawings.

[0029] As Figures 1-11The shown one kind pneumatic quick connector, including elbow 1, the connector 2 being arranged at the first end of elbow 1 and the quick connector assembly being arranged at the second end of elbow 1, specifically, the connector 2 is threadedly connected with elbow 1, the quick connector assembly includes sleeve 3, bushing 4 and button 5 arranged in order from inside to outside, the bushing 4 is fixedly arranged in elbow 1, the button 5 is slidingly arranged in the bushing 4, the inner wall of the elbow 1 is provided with a limiting step 11, a space is formed between the limiting step 11 and the bushing 4, the sleeve 3 is slidingly arranged in the space, the outer wall of the sleeve 3 is provided with a first limiting protrusion 31, the first limiting protrusion 31 is limitedly matched with the limiting step 11 to limit the moving distance of the sleeve 3, the first end of the button 5 is provided with a pointed end portion 511 matched with the sleeve 3, the end of the pointed end portion 511 in contact with the sleeve 3 is provided with a first arc surface 5111, the sleeve 3 is provided with a second arc surface 32 matched with the first arc surface 5111, the pointed end portion 511 is elastically expandable outward along the second arc surface 32, preferably, in the embodiment, the button 5 is made of a plastic piece, the plastic piece can be deformed when subjected to an external force, a first gap is left between the sleeve 3 and the bushing 4, the first gap forms a deformation area for the deformation of the pointed end portion 511, a first limiting structure is arranged between the pointed end portion 511 and the bushing 4, which can effectively prevent the button 5 from being undesirably pulled out, the inner wall of the button 5 is further provided with a second limiting structure matched with the air pipe.

[0030] Preferably, in the embodiment, referring to Figures 5-7 , the first end of the button 5 is provided with a plurality of plug-in portions 51 in the circumferential direction, a second gap 513 is left between the adjacent two plug-in portions 51, the second gap 513 can provide a certain space for deformation to avoid damage to the button 5, and the button 5 can be more easily installed into the elbow 1, one end of the plug-in portion 51 close to the sleeve 3 is provided with the pointed end portion 511, and the inner wall of the plug-in portion 51 is provided with the second limiting structure.

[0031] Preferably, in the embodiment, referring to Figure 3 , the first limiting structure includes a second limiting protrusion 5112 arranged on the outer wall of the pointed end portion 511 and a limiting groove 41 arranged on the bushing 4, the second limiting protrusion 5112 is limitedly matched with the limiting groove 41 to play a limiting role, which can effectively prevent the button 5 from being undesirably pulled out.

[0032] Preferably, in the embodiment, referring to Figure 3The second limiting structure comprises a plurality of limiting blocks 512 arranged on the inner wall of the button 5 in the circumferential direction, the limiting blocks 512 are matched with the trachea, one end of the limiting blocks 512 away from the sleeve 3 is provided with a first inclined surface 5121, one end of the limiting blocks 512 close to the sleeve 3 is provided with a second inclined surface 5122, the inclination angle of the first inclined surface 5121 is smaller than that of the second inclined surface 5122, the first inclined surface 5121 is gentle, and the second inclined surface 5122 is steep, so that the trachea is easy to insert and not easy to pull out, and the stability and reliability of the connection are ensured.

[0033] When the trachea is inserted, the button 5 does not need to be pressed, when the trachea needs to be pulled out, the user only needs to press the button 5, the pointed end part 511 is expanded outward along the second arc surface 32, so that the trachea is smoothly pulled out, the button 5 and the sleeve 3 are reset by air pressure, the trachea can be quickly connected and pulled out, the operation is simple, and the time is greatly saved.

[0034] Preferably, in the embodiment, referring to Figure 2 The elbow 1 is further provided with a Y-shaped sealing ring 6, the sealing performance of the inside of the elbow 1 is ensured, in order to better fix and limit the Y-shaped sealing ring 6, the first installation step 12 matched with the Y-shaped sealing ring 6 is arranged in the elbow 1, the sleeve 3 is arranged between the Y-shaped sealing ring 6 and the bushing 4, the opening of the Y-shaped sealing ring 6 is arranged away from one end of the sleeve 3, under the action of air pressure, the Y-shaped sealing ring 6 can better fit the sealing surface, so that the sealing effect is improved.

[0035] Preferably, in the embodiment, referring to Figure 4 The end surface of the Y-shaped sealing ring 6 close to the sleeve 3 is provided with an annular protrusion 61, the Y-shaped sealing ring 6 can play a buffering role when contacting with the sleeve 3.

[0036] Preferably, in the embodiment, referring to Figure 3 The second end of the button 5 is provided with a step part 52 matched with the elbow 1, so that the movement range of the button 5 is effectively limited.

[0037] Preferably, in the embodiment, referring to Figure 2 The O-shaped ring 7 is arranged between the joint 2 and the elbow 1, the second installation step 21 corresponding to the O-shaped ring 7 is arranged on the joint 2, so that the O-shaped ring 7 can be stably installed at the predetermined position, and the sealing performance between the joint 2 and the elbow 1 is improved.

[0038] Preferably, in the embodiment, referring to Figure 2The C-shaped ring 8 is arranged between the joint 2 and the elbow 1, and a third mounting step 22 corresponding to the C-shaped ring 8 is arranged on the joint 2, so that the C-shaped ring 8 can be stably mounted at a predetermined position, and the sealing performance between the joint 2 and the elbow 1 is improved.

[0039] The above is only the preferred embodiment of the present application, so equivalent changes or modifications made according to the structure, features and principles described in the patent application range of the present application are included in the patent application range of the present application.

Claims

1. A pneumatic quick coupling comprising an elbow (1), a coupling (2) arranged at a first end of the elbow (1), and a quick coupling assembly arranged at a second end of the elbow (1), characterized in that: The quick insertion assembly comprises a sleeve (3), a bushing (4) and a button (5) arranged in sequence from inside to outside, the bushing (4) is fixedly arranged in the elbow (1), the button (5) is slidingly arranged in the bushing (4), a limiting step (11) is arranged on the inner wall of the elbow (1), a space is formed between the limiting step (11) and the bushing (4), the sleeve (3) is slidingly arranged in the space, a first limiting protrusion (31) is arranged on the outer wall of the sleeve (3), the first limiting protrusion (31) is limitedly matched with the limiting step (11), a pointed end portion (511) is arranged at the first end of the button (5) and abuttingly matched with the sleeve (3), a first arc surface (5111) is arranged at the end of the pointed end portion (511) in contact with the sleeve (3), a second arc surface (32) is arranged on the sleeve (3) and matched with the first arc surface (5111), the pointed end portion (511) is elastically expandable along the second arc surface (32) outwardly, a first gap is left between the sleeve (3) and the bushing (4), the first gap forms a deformation area for the pointed end portion (511), a first limiting structure is arranged between the pointed end portion (511) and the bushing (4) in cooperation, the button (5) is limited to be pulled out, a second limiting structure is further arranged on the inner wall of the button (5).

2. An aerodynamic quick-connect coupling according to claim 1, wherein: The first limiting structure comprises a second limiting protrusion (5112) arranged on the outer wall of the pointed end portion (511) and a limiting groove (41) arranged on the bushing (4), the second limiting protrusion (5112) is limitedly matched with the limiting groove (41).

3. A pneumatic quick- coupling according to claim 1, characterized in that: The second limiting structure comprises a plurality of limiting clamping blocks (512) arranged on the inner wall of the button (5) in the circumferential direction, a first inclined surface (5121) is arranged at the end of the limiting clamping block (512) away from the sleeve (3), a second inclined surface (5122) is arranged at the end of the limiting clamping block (512) close to the sleeve (3), the inclination angle of the first inclined surface (5121) is smaller than that of the second inclined surface (5122).

4. The pneumatic quick disconnect coupling of claim 1, wherein: The first end of the button (5) is provided with a plurality of insertion portions (51) in the circumferential direction, a second gap (513) is left between two adjacent insertion portions (51), the end of the insertion portion (51) close to the sleeve (3) is provided with the pointed end portion (511), and the inner wall of the insertion portion (51) is provided with the second limiting structure.

5. The pneumatic quick disconnect coupling of claim 1, wherein: The elbow (1) is further provided with a Y-shaped sealing ring (6), the elbow (1) is provided with a first mounting step (12) limitedly matched with the Y-shaped sealing ring (6), the sleeve (3) is arranged between the Y-shaped sealing ring (6) and the bushing (4), and the opening of the Y-shaped sealing ring (6) is arranged at the end away from the sleeve (3).

6. An aerodynamic quick-connect coupling according to claim 5, wherein: An annular protrusion (61) is arranged on the end face of the Y-shaped sealing ring (6) close to the sleeve (3).

7. The pneumatic quick disconnect coupling of claim 1, wherein: The second end of the button (5) is provided with a step portion (52) limitedly matched with the elbow (1).

8. The pneumatic quick disconnect coupling of claim 1, wherein: The button (5) is made of plastic.

9. The pneumatic quick disconnect coupling set forth in claim 1, wherein: An O-ring (7) is arranged between the joint (2) and the elbow (1), and a second mounting step (21) corresponding to the O-ring (7) is arranged on the joint (2).

10. The pneumatic quick disconnect coupling of claim 1, wherein: A C-ring (8) is arranged between the joint (2) and the elbow (1), and a third mounting step (22) corresponding to the C-ring (8) is arranged on the joint (2).

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