CN210372456U

CN210372456U - Connecting joint

Info

Publication number: CN210372456U
Application number: CN201921012315.2U
Authority: CN
Inventors: 陈浩
Original assignee: Wenzhou Hongxiang Environmental Protection Technology Co ltd
Current assignee: Wenzhou Hongxiang Environmental Protection Technology Co ltd
Priority date: 2019-07-01
Filing date: 2019-07-01
Publication date: 2020-04-21
Anticipated expiration: 2029-07-01

Abstract

The utility model discloses a connecting joint, which is suitable for the connection of hoses and comprises a mandrel inserted into the hose and a hoop pipe sleeved outside the hose, wherein the mandrel is provided with a through hole which runs through the mandrel along the length direction, and the outer wall of the mandrel is provided with an annular boss which protrudes along the radial direction of the mandrel; the dabber is including being located the screw in portion that is used for inserting in the hose of the both sides of annular boss respectively and being used for the connecting portion that are connected with the exit end of water source or air supply, and screw in portion is provided with the external screw thread along the axial extension of dabber, and the external diameter of screw in portion and hose internal diameter interference fit, hoop pipe internal diameter and hose external diameter interference fit. According to the arrangement, the mandrel screwed into the hose is provided with the external thread so that the mandrel can be screwed into the hose on the basis of increasing the size of the mandrel, and the mandrel has the effect of internally supporting the hose and is tightly connected with the hose; and the hoop pipe is sleeved outside the hose connector end, so that the firmness of hose connection can be ensured.

Description

Connecting joint

Technical Field

The utility model relates to a hose connection technical field, more specifically say, relate to a connector.

Background

When the water source or the air source needs to be conveyed, a conveying hose is generally used, and the conveying hose is connected with the outlet end of a container for containing the water source or the air source so as to lead out water flow or air flow. In the prior art, the connection of the hose to the container is generally achieved by inserting a bushing at the connection end of the hose. One end of the shaft sleeve is inserted into the hose to be connected with the hose, the other end of the shaft sleeve is provided with an external thread to be connected with an internal thread at the outlet end of the container or is connected with the outlet end of the container through a conversion joint with an internal thread, and water flow or air flow enters the hose through the inner cavity of the shaft sleeve. However, the connection between the sleeve and the hose is not tight and firm enough, and water leakage is likely to occur, or the sleeve is pushed outwards by the pressure in the hose to separate from the hose and disconnect from the hose.

Therefore, how to enhance the tightness and the firmness of the connection between the hose and the shaft sleeve becomes a technical problem which needs to be solved by those skilled in the art.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a connecting joint, wherein the mandrel screwed into the hose is provided with external threads so as to ensure that the mandrel can be screwed into the hose on the basis of increasing the size of the mandrel, so that the mandrel has the effect of internally supporting the hose and is tightly connected with the hose; and the hoop pipe is sleeved outside the hose connector end, so that the firmness of hose connection can be ensured.

The utility model provides a connecting joint, which is suitable for the connection of hoses, and comprises a mandrel inserted into the hose and a hoop pipe sleeved outside the hose, wherein the mandrel is provided with a through hole which runs through the mandrel along the length direction, and the outer wall of the mandrel is provided with an annular boss which protrudes along the radial direction of the mandrel; the dabber is including being located respectively being used for of the both sides of annular boss inserts screw in portion in the hose and being used for the connecting portion that are connected with the exit end of water source or air supply, screw in portion is provided with the edge the axial extension's of dabber external screw thread, just the external diameter of screw in portion with the internal diameter interference fit of hose, the internal diameter of hoop pipe with the external diameter interference fit of hose.

Preferably, the gas source device further comprises a sleeve sleeved outside the connecting part, the sleeve is rotatably connected with the mandrel, an inner thread used for being connected with an outer thread of the adapter is arranged on the inner wall of the sleeve, and the adapter is connected with an outlet end of the gas source or the water source.

Preferably, the sleeve is removably connected to the mandrel.

Preferably, a connecting ring protruding in the radial direction of the sleeve is arranged on the inner wall of the sleeve, the inner diameter of the connecting ring is smaller than the outer diameter of the annular boss and larger than the diameter of the screwed portion, and the inner diameter of the sleeve is larger than the outer diameter of the annular boss.

Preferably, one side of the annular boss close to the screwing part is provided with a step surface, and two end surfaces of the step surface are respectively used for abutting against the inner wall of the hose and the inner side surface of the connecting ring.

Preferably, the outer diameter of the connecting portion is smaller than the inner diameter of the adapter, an annular groove is formed in the outer peripheral surface of the connecting portion, and a first sealing element used for sealing the connecting portion and the inner wall of the adapter is arranged in the annular groove.

Preferably, a second sealing member for sealing between the screw-in portion and the hose is arranged at a position of the screw-in portion of the mandrel close to the annular boss.

Preferably, the cross section of the annular boss is arranged to be a regular hexagon and can be matched with an inner hexagon of a hexagonal wrench.

Preferably, the outer diameter of the sleeve is greater than or equal to the outer diameter of the ferrule.

Preferably, the top end of the screwing part is provided with a chamfer.

The utility model provides a connector, be applicable to the connection of hose, can be connected the exit end or the crossover sub of hose and water source or air supply. The connecting joint comprises a mandrel inserted into the hose and a hoop pipe sleeved outside the hose, wherein the mandrel and the hoop pipe act on the same section of the hose and play a role of an internal-supporting external hoop on the hose. Wherein, the dabber is provided with the perforating hole that runs through the dabber along length direction, is provided with the radial convex annular boss along the dabber on the dabber outer wall. The mandrel comprises a screw-in part and a connecting part which are respectively positioned at two sides of the annular boss. The connecting part is used for being connected with the outlet end of a water source or an air source, the screwing part is used for being inserted into the hose, and the port of the hose abuts against the annular boss. The screw in portion is provided with the external screw thread of the axial extension along the dabber, and the external diameter and the hose internal diameter interference fit of screw in portion, then screw in portion can be through in the external screw thread screw in hose and play the effect of internal stay to the hose, can with hose zonulae occludens. The inner diameter of the hoop pipe is in interference fit with the outer diameter of the hose, so that the hoop pipe can clamp the hose and prevent the hose from falling off from the mandrel. According to the configuration, the utility model provides a connector can with hose zonulae occludens, prevent that the hose from droing, can guarantee hose connection's fastness.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic structural view of a connection joint in an embodiment of the present invention;

fig. 2 is a schematic structural view of the mandrel according to an embodiment of the present invention.

In fig. 1-2:

the pipe comprises a hose-1, a mandrel-2, an annular bulge-201, a screw-in part-202, a connecting part-203, an annular groove-204, a sealing groove-205, a hoop pipe-3, a sleeve-4 and a connecting ring-401.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be described in detail below. It is to be understood that the embodiments described are only some embodiments of the invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

The objective of the present embodiment is to provide a connection joint, wherein an external thread is disposed on a mandrel screwed into a hose, so that the mandrel can be screwed into the hose on the basis of increasing the size of the mandrel, and the mandrel has the effect of internally supporting the hose and is tightly connected with the hose; and the hoop pipe is sleeved outside the hose connector end, so that the firmness of hose connection can be ensured.

Hereinafter, embodiments will be described in detail with reference to the accompanying drawings. The embodiments described below do not limit the scope of the invention described in the claims. Further, the entire contents of the configurations shown in the following embodiments are not limited to those necessary as a solution of the invention described in the claims.

Referring to fig. 1-2, the present embodiment provides a connector suitable for connecting a hose 1, which can connect the hose 1 with an outlet of a water source or an air source, or connect the hose 1 with a connector, and the connector is further connected with various other outlet. The connecting joint comprises a mandrel 2 inserted into the hose 1 and a hoop pipe 3 sleeved outside the hose 1, wherein the mandrel 2 and the hoop pipe act on the same section of the hose 1 and play a role of an internal-bracing external hoop for the hose 1. Wherein, the mandrel 2 is provided with a through hole which penetrates through the mandrel 2 along the length direction and is used for communicating a water source or an air source with the hose 1. The outer wall of the mandrel 2 is provided with an annular boss 201 protruding along the radial direction of the mandrel 2. The mandrel 2 is divided into a screw-in portion 202 and a connecting portion 203 by an annular boss 201. The annular boss 201 may be located at an end position of the mandrel 2. The connecting portion 203 is used for connecting with the outlet end of a water source or an air source, the screw-in portion 202 is used for being inserted into the hose 1, and the port of the hose 1 abuts against the annular boss 201. To ensure the tightness of the connection, the outer diameter of the screw-in portion 202 is interference fit with the inner diameter of the hose 1. The annular boss 201 can be used as a stress part of the mandrel 2, and an operator uses a tool to clamp the annular boss 201 to forcibly insert the screw-in part 202 into the hose 1. And the outer wall of the screwing part 202 is provided with an external thread extending along the axial direction of the mandrel 2, the screwing part 202 can enter the hose 1 through the external thread in a screwing mode, and the size of the screwing part 202 can reach the maximum size capable of entering the hose 1, plays a role of internal bracing for the hose 1, and achieves the effect of tight connection with the hose 1. And the hoop pipe 3 sleeved outside the hose 1 has a difference value between the inner diameter of the hoop pipe 3 and the outer diameter of the screwed part 202, the difference value is slightly smaller than the thickness of the hose 1 or achieves an interference fit effect with the thickness of the hose 1, namely, the inner diameter of the hoop pipe 3 can be in interference fit with the outer diameter of the hose 1 connected with the connector, and then the hoop pipe 3 plays a role in hooping the hose 1 connected with the connector and prevents the hose 1 from falling off from the mandrel 2. In practical application, the hoop tube 3 can be firstly sleeved on the hose 1, and the mandrel 2 can be screwed into the hose 1.

Compared with the prior art, the mandrel 2 of the connecting joint provided by the embodiment has larger outer diameter than a shaft sleeve in the prior art and is provided with external threads, so that the interference fit effect is increased, and the mandrel 2 can enter the hose 1 to play a role in tight connection; and the setting of hoop pipe 3 can further prevent that hose 1 from receiving the effect of intraductal water pressure or atmospheric pressure and coming off from dabber 2, and hoop pipe 3 and dabber 2 and hose 1's size cooperation, not only strengthen and connect the steadiness but also can avoid not being big because of the not suitable operation that causes of cramping nature, need use extra instrument to withhold hoop pipe 3 in order to reduce the internal diameter of hoop pipe 3 of the size of hoop pipe 3. According to the configuration, the utility model provides a connector, dabber 2 and hoop pipe 3 two act on the same district section of hose 1 simultaneously, and dabber 2 all uses hose 1 to carry out the size cooperation with hoop pipe 3's size as the basis, plays the effect of internal stay outer hoop to hose 1, can guarantee the compactness and the fastness of connecting.

In particular, the mandrel 2 may be made using a rust-resistant material, such as stainless steel. The cross section of the annular boss 201 can be regular hexagon, and the size of the annular boss is matched with the inner hexagon of a hexagonal wrench, so that an operator can conveniently screw the mandrel 2 into the hose 1 by using a hexagonal wrench tool.

In order to enable the mandrel 2 to be smoothly screwed into the hose 1, a chamfer angle can be arranged at the top end of the screwing part 202, so that the top end of the screwing part 202 is clamped into the pipe orifice of the hose 1, and then the mandrel 2 is screwed in by applying force by an operator. The tip of the screw-in portion 202 refers to an end of the screw-in portion 202 away from the annular boss 201.

The connecting portion 203 may be provided with an external thread on an outer wall to connect with an adapter with an internal thread; or, as shown in fig. 1, the sleeve 4 is sleeved outside the connecting portion 203, the sleeve 4 is rotatably connected to the mandrel 2, the inner diameter of the sleeve 4 is larger than the outer diameter of the adapter, and the inner wall of the sleeve 4 is provided with an internal thread which can be connected with the external thread of the adapter. So set up, dabber 2 is connected through sleeve pipe 4 and crossover sub realization, and crossover sub is connected with the exit end of water source or air supply, and sleeve pipe 4 can rotate for dabber 2, then does not rotate dabber 2, only rotates sleeve pipe 4, just can realize threaded connection with the exit end of water source or air supply, can prevent that hose 1 from following dabber 2 and producing the rotation, prevent that the shaft of a pipe of hose 1 from producing the rotation and entangling together, cause the jam.

And the sleeve 4 can be detachably connected with the mandrel 2 so as to facilitate classified storage and individual maintenance and replacement of parts. Specifically, the sleeve 4 can be rotatably and detachably connected with the mandrel 2 through threaded connection, the inner wall of the sleeve 4 is provided with internal threads, and the outer wall of the connecting part 203 of the mandrel 2 close to the annular boss 201 is provided with matched external threads. Or as shown in fig. 1, a connection ring 401 protruding in the radial direction of the sleeve 4 is connected to the inner wall of the opening at one end of the sleeve 4, the connection ring 401 is in a ring structure, is vertically connected to the inner wall of the sleeve 4, and has a central axis in the same direction as the central axis of the sleeve 4. Let the internal diameter of sleeve pipe 4 be greater than the external diameter of annular boss 201, and the internal diameter of connecting ring 401 is greater than the external diameter of the external screw thread of dabber 2 screw in portion 202, is less than the external diameter of annular boss 201, then dabber 2 can penetrate in the sleeve pipe 4, and screw in portion 202 wears out through the hole of connecting ring 401, and the terminal surface that is close to screw in portion 202 of annular boss 201 offsets with the medial surface of connecting ring 401, realizes rotatable and detachably connected of dabber 2 and sleeve pipe 4. And the connection mode is convenient to operate, convenient and fast.

Since the end surface of the nozzle of the hose 1 also abuts against the end surface of the annular boss 201 close to the screw-in portion 202, as shown in fig. 2, one side of the annular boss 201 close to the screw-in portion 202 may be set as a step surface, that is, the end surface abutting against the hose 1 is a step surface structure, and two end surfaces of the step surface are respectively used for abutting against the inner wall of the hose 1 and the inner side surface of the connection ring 401. So set up, annular boss 201 offsets with hose 1 and sleeve pipe 4 simultaneously, and hose 1 and sleeve pipe 4 can mutually noninterfere, mutually noninterfere the other side and annular boss 201's be connected.

Note that the inner side surface of the connection ring 401 refers to an annular surface of the connection ring 401 on the side close to the inside of the sleeve 4.

Further, the outer diameter of the sleeve 4 may be set to be greater than or equal to the outer diameter of the hoop tube 3, so that the hoop tube 3 may also abut against the side of the sleeve 4 close to the hoop tube 3, and the hoop tube 3 may be prevented from slipping off the connection end of the hose 1 and separating from the hose 1.

After the adapter is connected with the sleeve 4, water flow or air flow enters the through hole of the mandrel 2 through the inner hole of the adapter and enters the hose 1, and the air flow or the water flow is easy to leak from the connection part of the sleeve 4 and the mandrel 2 due to the connection mode of the sleeve 4 and the mandrel 2. To solve this problem, as shown in fig. 1, the present embodiment provides a connection joint, in which the outer diameter of the connection portion 203 is smaller than the inner diameter of the adapter, so that the connection portion 203 is inserted into the inner hole of the adapter. Meanwhile, an annular groove 204 is formed in the outer peripheral surface of the connecting portion 203, and a first sealing member for sealing the connecting portion 203 and the inner wall of the adapter is disposed in the annular groove 204. Therefore, the joints of the sleeve 4, the adapter and the mandrel 2 can be effectively sealed and prevented from leakage.

Similarly, in order to prevent leakage at the connection between the hose 1 and the mandrel 2, as shown in fig. 2, a sealing groove 205, which may be an annular groove, may be provided on the outer wall of the screw-in portion 202 of the mandrel 2 near the annular boss 201. A second seal member for sealing between the screw 202 and the hose 1 is provided in the seal groove 205. Therefore, the joint of the hose 1 and the mandrel 2 can be effectively sealed and prevented from leaking.

The first sealing element and the second sealing element can be arranged as O-shaped sealing rings or sealing strips.

It is understood that the same or similar parts in the above embodiments may be mutually referred to, and the same or similar parts in other embodiments may be referred to for the content which is not described in detail in some embodiments. The multiple schemes provided by the invention comprise basic schemes, are independent from each other and are not restricted with each other, but can be combined with each other under the condition of no conflict, so that multiple effects are realized together.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A connecting joint is suitable for connecting a hose (1), and is characterized by comprising a mandrel (2) inserted into the hose (1) and a hoop pipe (3) sleeved outside the hose (1), wherein the mandrel (2) is provided with a through hole penetrating the mandrel (2) along the length direction, and the outer wall of the mandrel (2) is provided with an annular boss (201) protruding along the radial direction of the mandrel (2); the core shaft (2) comprises a screw-in portion (202) which is located on two sides of the annular boss (201) and used for being inserted into the hose (1) and a connecting portion (203) which is used for being connected with an outlet end of a water source or an air source, wherein the screw-in portion (202) is provided with an external thread extending along the axial direction of the core shaft (2), the external diameter of the screw-in portion (202) is in interference fit with the internal diameter of the hose (1), and the internal diameter of the hoop pipe (3) is in interference fit with the external diameter of the hose (1).

2. The connector according to claim 1, further comprising a sleeve (4) sleeved outside the connecting portion (203), wherein the sleeve (4) is rotatably connected to the mandrel (2), and an inner wall of the sleeve (4) is provided with an inner thread for connecting with an outer thread of a adapter, and the adapter is connected to an outlet of the water source or the gas source.

3. A connection joint according to claim 2, characterized in that the sleeve (4) is detachably connected to the mandrel (2).

4. The connection joint according to claim 3, characterized in that the inner wall of the sleeve (4) is provided with a connection ring (401) projecting in the radial direction of the sleeve (4), the inner diameter of the connection ring (401) is smaller than the outer diameter of the annular boss (201) and larger than the diameter of the screw-in portion (202), and the inner diameter of the sleeve (4) is larger than the outer diameter of the annular boss (201).

5. The coupling according to claim 4, characterized in that the side of the annular projection (201) adjacent to the screw-in portion (202) is provided with a step surface, and two end surfaces of the step surface are respectively used for abutting against the inner wall of the hose (1) and the inner side surface of the connecting ring (401).

6. The coupling joint according to claim 2, wherein the outer diameter of the connecting portion (203) is smaller than the inner diameter of the adapter, an annular groove (204) is provided on the outer circumferential surface of the connecting portion (203), and a first sealing member for sealing the connecting portion (203) and the inner wall of the adapter is provided in the annular groove (204).

7. The connector coupling according to claim 1, characterized in that the screw-in portion (202) of the mandrel (2) is provided with a second seal for sealing between the screw-in portion (202) and the hose (1) close to the annular projection (201).

8. The connection joint according to claim 1, characterized in that the cross section of the annular boss (201) is arranged as a regular hexagon and can match with the inner hexagon of a hexagonal wrench.

9. The connection joint according to claim 4, characterized in that the outer diameter of the sleeve (4) is greater than or equal to the outer diameter of the ferrule tube (3).

10. The connector of claim 1, characterized in that the top end of the screw-in portion (202) is provided with a chamfer.