Improved quick connector

Abstract

The utility model discloses an improved quick connector which comprises a first joint and a second joint, an upper shell part is formed or fixed at the upper end of the first joint, and the top end of a middle vertical through hole of the first joint is communicated with a middle through groove which extends left and right and penetrates through the upper shell part. An upper through hole extending downwards is formed in the middle of a top plate of the upper shell part, and the upper through hole communicates with the middle through groove; the first connector and the second connector are connected in a sealed mode through the sealing sleeve, meanwhile, side sealing is achieved through the side annular protruding part, bottom sealing is achieved through the lower annular protruding part, and therefore no material is left in a gap between the connecting positions of the first connector and the second connector, and normal use of the connector is guaranteed. And the inner side wall of the annular groove and the outer side wall of the sealing sleeve do not need to be cleaned subsequently.

Description

Technical field:

[0001] The utility model relates to the technical field of biopharmaceuticals, and more particularly to an improved quick connector. Background technology:

[0002] Existing quick connect or disconnect fitting assemblies are commonly used in biomedical applications, convenience processing, beverage dispensing, instrument connection, photochemical processing, and many other applications.

[0003] For example, the two-piece molded female threaded joint with Chinese patent application No. 00804743.X has a female joint element, a male joint element and a clamp element slidably assembled on the female joint element to keep the female joint element and the male joint element together in a coupled state. In order to ensure the tight connection between the female joint element and the male joint element, a sealing ring is embedded in the annular groove formed on the outer wall of the connecting end of the male joint element. The outer part of the sealing ring extends out of the annular groove and presses against the inner wall of the plug section of the middle through hole of the female joint element. The sealing of the two is achieved by the sealing ring. However, in order to ensure that the connecting end of the male joint element can be well inserted into the plug section of the female joint element, the distance between the outer wall of the connecting end of the male joint element and the inner wall of the plug section of the female joint element is large, and the sealing ring is on the outer wall at the upper part of the connecting end of the male joint element. At this time, the bottom of the sealing ring A large amount of material will accumulate in the entire gap between the outer wall of the connecting end of the male connector element and the inner wall of the plug-in section of the female connector element. This material will not move with the flowing material, but will remain there, that is, it is "dead" material. This material will deteriorate over time. After the male connector element and the female connector element are separated, it will adhere to the inner wall of the plug-in section of the female connector element or the outer wall of the connecting end of the male connector element, which needs to be cleaned, which is very troublesome. When cleaning is forgotten, during subsequent use, this deteriorated material will enter the pipeline connected to the female connector element once it is loose, causing pollution to the manufactured materials, and the effect is not ideal. Utility model content:

[0004] The purpose of the utility model is to provide an improved quick connector to address the deficiencies of the prior art. The utility model adopts a sealing sleeve to achieve a sealed connection between a first joint and a second joint. At the same time, the side sealing is achieved through a side annular protrusion and the bottom sealing is achieved through a lower annular protrusion, so that no material is retained in the gap between the connection of the first joint and the second joint, thereby ensuring its normal use. There is no need to clean the inner wall of the annular groove and the outer wall of the sealing sleeve later.

[0005] The technical solutions of the utility model are as follows:

[0006] An improved quick connector comprises a first joint and a second joint, wherein an upper housing portion is formed or fixed on the upper end of the first joint, a top end of a vertical through hole in the middle of the first joint is communicated with a middle through slot extending left and right and penetrating the upper housing portion, an upper through hole extending downward is formed in the middle of a top plate of the upper housing portion, and the upper through hole is communicated with the middle through slot;

[0007] The lower part of the second joint is inserted into the upper shell part, the bottom of the second joint is inserted into the upper part of the first joint, a sealing sleeve is fixed on the outer side wall of the bottom of the second joint, and the outer side wall of the sealing sleeve is pressed against the upper inner side wall of the first joint.

[0008] An annular groove is formed on the upper inner side wall of the first joint, the top of the annular groove extends out of the top of the first joint and communicates with the middle through groove, the bottom of the sealing sleeve extends out of the bottom of the second joint, and a radially extending sealing annular portion is formed on the inner side wall of the bottom end of the sealing sleeve, the top surface of the sealing annular portion presses against the bottom end surface of the second joint, and the bottom surface of the sealing annular portion presses against the bottom surface of the annular groove, the bottom of the sealing sleeve and the second joint are inserted into the annular groove, and the outer side wall of the sealing sleeve matches the inner side wall of the annular groove. This makes the bottom end of the second joint seal with the bottom surface of the annular groove, so that the materials flowing in the first joint and the second joint will not enter the gap between the annular groove and the outer side wall of the sealing sleeve, ensuring the sealing effect.

[0009] A side annular protrusion is formed in the middle of the outer side wall of the sealing sleeve, and the outer side wall of the side annular protrusion is pressed against the inner side wall of the annular groove.

[0010] The edge of the bottom end surface of the annular groove is formed with a lower annular groove extending downward, and the bottom surface of the sealing annular portion is formed with a lower annular protrusion extending downward. The lower annular protrusion is nested in the lower annular groove, and the bottom surface of the lower annular protrusion is pressed against the bottom surface of the lower annular groove.

[0011] The bottom cross section of the lower annular groove is an arc-shaped surface, and the bottom cross section of the lower annular protrusion is also an arc-shaped surface, and the two are matched.

[0012] The beneficial effects of the utility model are:

[0013] It adopts a sealing sleeve to achieve a sealed connection between the first joint and the second joint. At the same time, it realizes side sealing through a side annular protrusion and realizes bottom sealing through a lower annular protrusion, so that no material will be retained in the gap between the connection of the first joint and the second joint, thereby ensuring its normal use. There is no need to clean the inner wall of the annular groove and the outer wall of the sealing sleeve later, and the purity of the transported material will not be affected by the retained material between the first joint and the second joint entering the circulation pipeline. Description of the drawings:

[0014] Figure 1It is a partial structural schematic diagram of the utility model;

[0015] Figure 2 It is a partial cross-sectional view of the utility model;

[0016] Figure 3 A partial cross-sectional view of the utility model from another direction;

[0017] Figure 4 A partial cross-sectional view of the utility model in another direction;

[0018] Figure 5 It is a partial structural schematic diagram of two clamp components of the utility model;

[0019] Figure 6 yes Figure 5 Schematic diagram of the angle-changing local structure;

[0020] Figure 7 It is a schematic diagram of the local structure of the sealing sleeve;

[0021] Figure 8 is a partial structural schematic diagram of the first joint and the upper shell portion;

[0022] Fig. 9 yes Figure 2 A partial enlarged view of . Specific implementation method:

[0023] Example: See Figures 1 to 9 As shown, an improved quick connector includes a first connector 10 and a second connector 20, wherein an upper housing portion 30 is formed or fixed at the upper end of the first connector 10, and the top end of the middle vertical through hole of the first connector 10 is communicated with a middle through slot 31 extending left and right and penetrating the upper housing portion 30, and an upper through hole 32 extending downward is formed in the middle of the top plate of the upper housing portion 30, and the upper through hole 32 is communicated with the middle through slot 31;

[0024] The lower part of the second joint 20 is inserted into the upper shell part 30, the bottom of the second joint 20 extends out of the bottom surface of the middle through groove 31 and is inserted into the upper part of the first joint 10, and a sealing sleeve 40 is fixed on the outer wall of the bottom of the second joint 20, and the outer wall of the sealing sleeve 40 is pressed against the upper inner wall of the first joint 10.

[0025] Furthermore, an annular groove 11 is formed on the upper inner side wall of the first joint 10, the top end of the annular groove 11 extends out of the top end of the first joint 10 and communicates with the middle through groove 31, the bottom end of the sealing sleeve 40 extends out of the bottom end of the second joint 20, and a radially extending sealing annular portion 41 is formed on the inner side wall of the bottom end of the sealing sleeve 40, the top surface of the sealing annular portion 41 is pressed against the bottom end surface of the second joint 20, the bottom surfaces of the sealing annular portion 41 and the sealing sleeve 40 are pressed against the bottom surface of the annular groove 11, the sealing sleeve 40 and the bottom of the second joint 20 are inserted into the annular groove 11, and the outer side wall of the sealing sleeve 40 cooperates with the inner side wall of the annular groove 11.

[0026] Furthermore, a side annular protrusion 42 is formed in the middle of the outer side wall of the sealing sleeve 40 , and the outer side wall of the side annular protrusion 42 is pressed against the inner side wall of the annular groove 11 .

[0027] Furthermore, a lower annular groove 111 extending downward is formed on the edge of the bottom end surface of the annular groove 11, and a lower annular protrusion 43 extending downward is formed on the bottom surfaces of the sealing sleeve 40 and the sealing annular portion 41. The lower annular protrusion 43 is nested in the lower annular groove 111, and the bottom surface of the lower annular protrusion 43 is pressed against the bottom surface of the lower annular groove 111.

[0028] Furthermore, the bottom cross section of the lower annular groove 111 is an arc-shaped surface, that is, the lower annular groove 111 is an annular groove with an arc-shaped bottom surface, and the bottom cross section of the lower annular protrusion 43 is also an arc-shaped surface, and the two are matched.

[0029] The lower annular groove 111 can be used to seal the bottom end of the second joint 20 and the bottom surface of the annular groove 11, so that the circulating materials in the second joint 20 and the first joint 10 will not enter the annular groove 11, so that after the second joint 20 and the first joint 10 are separated later, there will be no material between the inner wall of the annular groove 11 and the outer wall of the sealing sleeve 40, so there is no need to clean it, and it can be used normally after subsequent reinstallation, and no material between the inner wall of the annular groove 11 and the outer wall of the sealing sleeve 40 will fall into the pipeline connected to the first joint 10, thereby ensuring the purity of the internal material transportation.

[0030] Furthermore, the inner side wall of the upper section of the annular groove 11 is a cylindrical wall surface, and the lower end of the upper section is a lower section, which is a conical wall surface with a larger diameter at the upper end and a smaller diameter at the lower end;

[0031] An outer annular groove is formed on the outer side wall of the bottom of the second joint 20, and the bottom end of the outer annular groove extends out of the bottom surface of the second joint 20. The sealing sleeve 40 is nested in the outer annular groove, and the top surface of the sealing sleeve 40 is pressed against the top surface of the outer annular groove. A plurality of annular grooves are formed on the inner side wall of the sealing sleeve 40, and a plurality of annular protrusions are formed on the inner side wall of the outer annular groove, and the annular protrusions are clamped in the corresponding annular grooves; the plurality of annular protrusions and annular grooves cooperate and clamp with each other, so that the contact area between the sealing sleeve 40 and the bottom of the second joint 20 is increased, the friction force is increased, and the connection is firm.

[0032] The outer wall of the sealing sleeve 40 matches the inner wall of the annular groove 11 . A side annular protrusion 42 is formed on the upper portion of the outer wall of the sealing sleeve 40 . The outer wall of the side annular protrusion 42 presses against the inner wall of the upper section of the annular groove 11 .

[0033] This structure enables sealing and support between the annular groove 11 and the middle part of the sealing sleeve 40 through the side annular protrusion 42, thereby ensuring a firm and stable connection between the second joint 20 and the first joint 10.

[0034] Furthermore, an upper annular groove is formed on the inner wall of the top end of the annular groove 11, and a thickened portion is formed on the lower outer wall of the second joint 20, the thickened portion is above the sealing sleeve 40, the lower part of the thickened portion is inserted into the upper annular groove, the lower outer wall of the thickened portion is close to the inner wall of the upper annular groove, the upper part of the thickened portion is inserted into the upper through hole 32, and the upper outer wall of the thickened portion is close to the inner wall of the upper through hole 32.

[0035] A radially extending edge 23 is formed on the outer wall of the second joint 20 above the thickened portion, the bottom surface of the radially extending edge 23 is close to the top surface of the upper shell portion 33, and a first annular groove 311 is formed on the outer wall of the thickened portion at the middle through groove 31;

[0036] The left part of the upper part of the front and rear inner side walls of the middle through slot 31 is formed with a first limiting protrusion 312, the right part of the lower part of the front and rear inner side walls of the middle through slot 31 is formed with a second limiting protrusion 313, and the left and right parts of the middle through slot 31 are both inserted with a clamp element 60;

[0037] Further, the clamp element 60 includes an outer button portion 61 (the top and bottom of the outer button portion 61 are both formed with horizontal extension portions), the two outer button portions 61 are inserted at the left and right ends of the middle through slot 31, the outer ends of the outer button portions 61 extend out of the left or right end of the middle through slot 31, the upper portions of the front and rear ends of the inner side of the left outer button portion 61 are formed with upper extension rod portions 62 extending to the right, a first arc-shaped clamping portion 63 is formed between the right ends of the two corresponding upper extension rod portions 62, the right ends of the two upper extension rod portions 62 are both formed with first arc-shaped elastic portions 64 extending to the right, and the end of the first arc-shaped elastic portion 64 is pressed against the inner side wall of the outer button portion 61 on the right side;

[0038] A lower extending rod portion 65 extending to the left is formed at the lower portion of the front and rear ends of the inner side of the outer button portion 61 on the right side, and a second arc-shaped clamping portion 66 is formed between the left ends of the two corresponding front and rear lower extending rod portions 65. The left ends of the two lower extending rod portions 65 are both formed with a second arc-shaped elastic portion 67 extending to the left, and the end of the second arc-shaped elastic portion 67 is pressed against the inner wall of the outer button portion 61 on the left; the end of the first arc-shaped elastic portion 64 and the end of the second arc-shaped elastic portion 67 are located between the upper and lower horizontal extension portions of the corresponding outer button portion 61, and the bottom surface of the upper extending rod portion 62 is in close contact with the top surface of the corresponding lower extending rod portion 65.

[0039] The lower portion of the first arc-shaped clamping portion 63 extends downward and is located between the two lower extension rods 65, the lower portion of the first arc-shaped clamping portion 63 is located in the first annular groove 311, and the bottom surface of the first arc-shaped clamping portion 63 is pressed against the bottom surface in the first annular groove 311, the upper portion of the second arc-shaped clamping portion 66 extends upward and is located between the two upper extension rods 62, the lower portion of the second arc-shaped clamping portion 66 is located in the first annular groove 311, and the bottom surface of the second arc-shaped clamping portion 66 is pressed against the bottom surface in the first annular groove 311;

[0040] The inner side walls of the first arc-shaped clamping portion 63 and the second arc-shaped clamping portion 66 are both tapered wall surfaces with a larger inner diameter at the upper end and a smaller inner diameter at the lower end.

[0041] Furthermore, two limiting portions 68 are formed on the outer side walls of the upper extension rod portion 62 and the lower extension rod portion 65, and the first limiting protrusion block 312 or the second limiting protrusion block 313 is located between the corresponding two limiting portions 68 and cooperates with each other;

[0042] The left side wall of the left limiting portion 68 is an inclined wall surface, and the right side wall of the right limiting portion 68 is an inclined wall surface.

[0043] Furthermore, a plurality of arc-shaped grooves extending forward and backward are formed on the inner side wall of the outer button portion 61, and all the arc-shaped grooves on the inner side wall of the same outer button portion 61 are parallel to each other in the vertical direction.

[0044] The ends of the first arc-shaped elastic portion 64 and the second arc-shaped elastic portion 67 are pressed against the inner side wall of the corresponding outer button portion 61 , which increases the friction force through the corresponding multiple arc-shaped grooves.

[0045] Furthermore, the outer side walls of the lower extension rod portion 65 and the upper extension rod portion 62 are close to the inner side wall of the front or rear portion of the middle through slot 31 .

[0046] Furthermore, the bottom outer wall of the first joint 10 and the top outer wall of the second joint 20 are both formed with an annular protrusion with a conical outer wall (the outer diameter of the outward end is smaller than the outer diameter of the end of the upper shell part 30), which can be used to achieve clamping and fixing when connecting the pipe body.

[0047] When using this embodiment, it is only necessary to press the two outer button parts 61 inward with force so that the two outer button parts 61 are close to each other, so that the two first arc-shaped elastic parts 64 and the two second arc-shaped elastic parts 67 are compressed. At this time, the first arc-shaped clamping part 63 and the second arc-shaped clamping part 66 are separated from each other until the limiting part 68 on the left side of the upper extension rod part 62 is pressed against the left side wall of the corresponding first limiting protrusion block 312, and the limiting part 68 on the right side of the lower extension rod part 65 is pressed against the right side wall of the corresponding second limiting protrusion block 313. At this time, the first arc-shaped clamping part 63 and the second arc-shaped clamping part 66 are moved out of the first annular groove 311. At this time, the second connector 20 can be separated from the first connector 10 by pulling it upward to achieve disassembly.

[0048] When installing, it is only necessary to extend the bottom end of the second joint 20 downward into the upper shell part 30. As it enters the middle through groove 31, it moves the first arc-shaped clamping part 63 and the second arc-shaped clamping part 66 outward to open (the first arc-shaped elastic part 64 and the second arc-shaped elastic part 67 are compressed and deformed at this time). Since the inner side walls of the first arc-shaped clamping part 63 and the second arc-shaped clamping part 66 are both conical wall surfaces with a larger inner diameter at the upper end and a smaller inner diameter at the lower end, when it moves downward, it will move the first arc-shaped clamping part 63 and the second arc-shaped clamping part 66 outward to open, and then, until the bottom of the sealing sleeve 40 and the second joint 20 are inserted into the annular groove 11, so that the outer side wall of the side annular protrusion 42 is pressed against the inner side wall of the upper section of the annular groove 11, the bottom surfaces of the sealing sleeve 40 and the sealing annular part 41 are pressed against the bottom surface of the annular groove 11, and the bottom surface of the lower annular protrusion 43 is pressed against A sealed connection is achieved on the bottom surface of the lower annular groove 111. At this time, it is necessary to press the second joint 20 downward with force to compress the sealing annular portion 41. At this time, the first annular groove 311 is opposite to the first arc-shaped clamping portion 63 and the second arc-shaped clamping portion 66. Through the elastic recovery of the first arc-shaped elastic portion 64 and the second arc-shaped elastic portion 67, the first arc-shaped clamping portion 63 and the second arc-shaped clamping portion 66 can be brought close to each other, and the bottoms of both can be extended into the first annular groove 311. At this time, the second joint 20 is released. With the elastic recovery of the sealing sleeve 40 and the bottom of the sealing annular portion 41, the second joint 20 will move upward a slight distance. At this time, the bottom surfaces of the first arc-shaped clamping portion 63 and the second arc-shaped clamping portion 66 will be pressed against the bottom surface of the first annular groove 311 to complete the installation, ensuring firm fixation, easy loading and unloading, good sealing effect, fast installation and good effect.

[0049] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principle of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. An improved quick connector, comprising a first connector (10) and a second connector (20), characterized in that: An upper housing portion (30) is formed or fixed at the upper end of the first joint (10), the top end of the middle vertical through hole of the first joint (10) is in communication with a middle through slot (31) extending left and right and penetrating the upper housing portion (30), an upper through hole (32) extending downward is formed in the middle of the top plate of the upper housing portion (30), and the upper through hole (32) is in communication with the middle through slot (31); The lower part of the second joint (20) is inserted into the upper shell part (30), and the bottom of the second joint (20) is inserted into the upper part of the first joint (10). A sealing sleeve (40) is fixed on the outer side wall of the bottom of the second joint (20), and the outer side wall of the sealing sleeve (40) is pressed against the upper inner side wall of the first joint (10).

2. An improved quick connector according to claim 1, characterized in that: An annular groove (11) is formed on the upper inner side wall of the first joint (10); the top end of the annular groove (11) extends out of the top end of the first joint (10) and communicates with the middle through groove (31); the bottom end of the sealing sleeve (40) extends out of the bottom end of the second joint (20); a radially extending sealing annular portion (41) is formed on the inner side wall of the bottom end of the sealing sleeve (40); the top surface of the sealing annular portion (41) is pressed against the bottom end surface of the second joint (20); the bottom surface of the sealing annular portion (41) is pressed against the bottom surface of the annular groove (11); the sealing sleeve (40) and the bottom of the second joint (20) are inserted into the annular groove (11); the outer side wall of the sealing sleeve (40) matches the inner side wall of the annular groove (11).

3. An improved quick connector according to claim 2, characterized in that: A side annular protrusion (42) is formed in the middle of the outer side wall of the sealing sleeve (40), and the outer side wall of the side annular protrusion (42) is pressed against the inner side wall of the annular groove (11).

4. An improved quick connector according to claim 2, characterized in that: A lower annular groove (111) extending downward is formed on the edge of the bottom end surface of the annular groove (11), and a lower annular protrusion (43) extending downward is formed on the bottom surface of the sealing annular portion (41). The lower annular protrusion (43) is nested in the lower annular groove (111), and the bottom surface of the lower annular protrusion (43) is pressed against the bottom surface of the lower annular groove (111).

5. An improved quick connector according to claim 4, characterized in that: The bottom cross section of the lower annular groove (111) is an arc-shaped surface, and the bottom cross section of the lower annular protrusion (43) is also an arc-shaped surface, and the two are matched.

6. An improved quick connector according to claim 2, characterized in that: The inner side wall of the upper section of the annular groove (11) is a cylindrical wall surface, and the lower end of the upper section is a lower section, which is a conical wall surface with a larger diameter at the upper end and a smaller diameter at the lower end; An outer annular groove is formed on the outer side wall of the bottom of the second joint (20), the bottom end of the outer annular groove extends out of the bottom surface of the second joint (20), the sealing sleeve (40) is nested in the outer annular groove, the top surface of the sealing sleeve (40) is pressed against the top surface of the outer annular groove, a plurality of annular grooves are formed on the inner side wall of the sealing sleeve (40), a plurality of annular protrusions are formed on the inner side wall of the outer annular groove, and the annular protrusions are clamped in the corresponding annular grooves; The outer wall of the sealing sleeve (40) matches the inner wall of the annular groove (11), and a side annular protrusion (42) is formed on the upper part of the outer wall of the sealing sleeve (40), and the outer wall of the side annular protrusion (42) presses against the inner wall of the upper section of the annular groove (11).

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