CN116972249A

CN116972249A - Rubber tube joint

Info

Publication number: CN116972249A
Application number: CN202310807686.4A
Authority: CN
Inventors: 赵卫锋; 杜青; 刘董蕾
Original assignee: Gates Hydraulic Technology Changzhou Co ltd
Current assignee: Gates Hydraulic Technology Changzhou Co ltd
Priority date: 2023-07-04
Filing date: 2023-07-04
Publication date: 2023-10-31

Abstract

The creation discloses a rubber tube joint, which comprises a rod part, wherein the rod part is provided with a first end and a second end along the axial direction, and the second end is used for inserting a rubber tube; the bolt is sleeved on the first end of the rod part, so that the bolt can be rotatably kept on the first end of the rod part; a sleeve including an attachment portion at a first end, a socket portion at a second end, the attachment portion being secured to the stem portion, the hose being secured between the socket portion and the stem portion; the jack part is internally provided with a plurality of inserts, the inserts are C-shaped before the jack part and the inserts are extruded and deformed, and after the jack part and the inserts are extruded and deformed, the joint of the opening of the previous insert and the opening of the next insert in the axial direction is staggered in the circumferential direction.

Description

Rubber tube joint

Technical Field

The invention relates to a rubber tube joint which is mainly used for connecting the end parts of rubber tubes.

Background

In the current use of rubber hoses, a joint is usually required to be assembled at one end of the rubber hose, and the rubber hose is connected with other parts through the joint so as to realize the transmission of fluid in a pipeline.

The joint of part of the rubber pipe is connected with other parts through threads so as to realize the characteristic of repeated use. It generally comprises a rod-like member with one end sleeved with a bolt for connection with the other member and the other end provided with a sleeve, the sleeve and rod-like member cooperating to retain the hose therebetween. The sleeve is typically provided with an integrally formed C-shaped insert which is compressively deformable with the sleeve, the C-shaped insert becoming generally circular after deformation. However, the integrally-formed C-shaped insert still has the defect of concentrated stress at the joint after deformation, the material of the rubber tube can be accumulated at the joint, the sealing effect is weak, and the situation is more obvious on the rubber tube with large diameter and thick tube wall. In addition, the C-shaped insert is relatively costly to provide integrally.

It is therefore desirable to design a new hose connector to further improve the hose connector.

Disclosure of Invention

The technical problem to be solved by the creation is to provide a rubber hose connector.

In order to solve the technical problems, the present invention provides a rubber tube joint, comprising a rod part, wherein the rod part is provided with a first end and a second end along the axial direction, and the second end is used for inserting a rubber tube; the bolt is sleeved on the first end of the rod part, so that the bolt can be rotatably kept on the first end of the rod part; a sleeve including an attachment portion at a first end, a socket portion at a second end, the attachment portion being secured to the stem portion, the hose being secured between the socket portion and the stem portion; the jack part is internally provided with a plurality of inserts, the inserts are C-shaped before the jack part and the inserts are extruded and deformed, and after the jack part and the inserts are extruded and deformed, the joint of the opening of the previous insert and the opening of the next insert in the axial direction is staggered in the circumferential direction.

The staggered inserts in the circumferential direction can close the openings of the plurality of C-shaped inserts after being pressed and deformed, and the openings are uniformly distributed in the circumferential direction, so that the stress distribution of the rubber tube is uniform, the accumulation of rubber tube materials is obviously improved, and the plurality of inserts are made of one or more linear materials, so that the cost is low.

Drawings

FIG. 1 is a schematic partial cross-sectional view of the present hose connector.

FIG. 2 is a schematic cross-sectional view of a portion of the components of the present hose connector.

Fig. 3 is an enlarged schematic view of the insert of the present hose connector.

Detailed Description

The hose connector of the present invention will be described in detail with reference to fig. 1 to 3.

A hose joint comprises a plurality of parts such as a rod part 10, a bolt 20, a sleeve 30 and the like.

The first end 11 of the rod 10 in the axial direction is provided with a step 12, the second end 13 is provided with a plurality of barbs 14 for inserting a hose (not shown), the barbs 14 enable the hose to be more reliably combined with the second end 13 of the rod 10, and an interface 15 is arranged between the first end and the second end of the rod 10. An operating portion is also fixedly provided on the lever portion 10, which in the preferred embodiment is in the shape of a bolt for the convenience of personnel to secure the lever portion 10.

The bolt 20 is sleeved on the rod 10 and is matched with the step part 12, so that the bolt 20 is rotatably kept on the rod 10 in the first axial direction, and when the rubber tube joint is matched with the butt joint (not shown), the bolt 20 can be rotated, so that the rubber tube joint is tightly combined with the butt joint.

The sleeve 30 includes an attachment portion 31 at a first end and a socket portion 32 at a second end, where the attachment portion 31 is fixed to the interface portion 15 of the stem 10, and the attachment portion 31 and the stem 10 are fixed to each other by extrusion deformation. Of course, other methods, such as welding, may be used, and these methods are not limited to the above-mentioned pressing or welding, and other technical methods known to those skilled in the art are also used to fix the hose between the socket portion 32 and the rod portion 10, and a torque transmission portion 33 is further provided between the socket portion 32 and the attachment portion 31.

The insertion hole 32 is provided therein with a plurality of insertion pieces 34, and before the insertion hole 32 and the insertion pieces 34 are deformed by pressing, the insertion pieces 34 are C-shaped, the openings 39 of the preceding insertion piece 34 and the following insertion piece 34 in the axial direction are arranged in a staggered manner in the circumferential direction, and at least 3 openings 39 of the axially adjacent insertion pieces 34 are arranged in sequence in the circumferential direction. The end portions of the inserts 34 are provided with chamfers 40, when the insertion hole portions 32 are pressed and deformed, the inserts 34 arranged in the insertion hole portions 32 are deformed along with the insertion hole portions, the openings 39 are contracted simultaneously, the chamfers 40 at the end portions of the inserts 34 enable the circumferential end portions of two adjacent inserts 34 to be contracted, and if the circumferential end portions are contacted with each other, the chamfers 40 can guide the inserts 34 to avoid each other so that the inserts 34 cannot be completely abutted against each other and further prevent the C-shaped inserts 34 from being completely deformed. The plurality of inserts 34 may be formed from a single piece of wire or strip material cut-off bent in the same configuration, which may significantly reduce manufacturing costs. It is also possible, as shown in fig. 3, to have a combination of two or more inserts 34 of different configurations, as well as each insert 34 being manufactured from a single piece of wire or strip material cut-off bent at a relatively low cost.

The radially outer surface of the insert 34 and the inner surface of the sleeve 30 are respectively provided with a guide rib 37 and a guide groove 38 extending along the circumferential direction, and the guide rib 37 and the guide groove 38 can guide the insert 34 to move along the preset direction when the insert 34 deforms along the circumferential direction, so that the possibility of the insert 34 moving along the axial direction is reduced. The radially outer surface of the insert 34 and the inner surface of the sleeve are respectively provided with a limit rib (not shown) and a limit groove (not shown) which extend along the axial direction, and the limit rib and the limit groove are matched with each other, so that when the insert 34 and the jack part 32 are extruded, the insert 34 cannot move in the circumferential direction, and the openings of the adjacent inserts 34 are arranged according to a preset central angle. Preferably, the stop rib or groove is disposed in the middle of the circumferential direction of the C-shaped insert 34. In other embodiments, the stop bars or slots may be provided at other locations along the circumference of the C-shaped insert 34.

In an alternative embodiment, the insert 34 comprises at least two dimensions, wherein the axial width of the first insert 35 on the side closer to the bolt 20 is greater than the axial width of the second insert 36 on the side farther from the bolt 20. Wherein the axially wider first insert 35 provides a strong clamping force that results in a stable clamping of the hose by the sleeve 30. The axially narrower second insert 36 provides a clamping force while providing a relatively flexible clearance for and sealing against the hose.

The central angle of the opening 39 of the insert 34 before extrusion deformation ranges from 55 degrees to 75 degrees, so that the opening 39 can be closed or close to be closed when being extruded, and the clamping of the rubber tube is realized. Preferably, the central angle of the opening of the insert 34 before the compression deformation is 60 degrees.

The opening of the preceding insert 34 in the axial direction is offset from the opening of the succeeding insert 34 in the circumferential direction by an angle of 120 degrees. In other embodiments, the angle at which the opening of the front insert 34 is offset from the opening 39 of the rear insert 34 in the circumferential direction may be adjusted as required, for example, 90 degrees or 60 degrees, etc., and is not limited to the listed angle. When the openings 39 are staggered, the insertion hole 32 and the insert 34 are pressed and deformed, and then both ends of the opening 39 of the insert 34 are pressed and brought into close contact. The joints of the openings of the front insert 34 and the rear insert 34 are mutually staggered in the circumferential direction, so that the plurality of inserts 34 in the buckling rear jack part 32 can be ensured to be close to a perfect circle to the maximum extent, and the wrinkles and axial distortions on the rubber tube are reduced or eliminated.

The above technical solution is only illustrative of the present embodiment of the present creation, and not limiting the present creation, and all equivalent changes made by those skilled in the art according to the creation of the present creation belong to the protection scope of the present creation.

Claims

1. A hose connector comprises

The rod part is provided with a first end and a second end along the axial direction, wherein the second end is used for being inserted into the rubber pipe;

the bolt is sleeved on the first end of the rod part, so that the bolt can be rotatably kept on the first end of the rod part; a sleeve including an attachment portion at a first end, a socket portion at a second end, the attachment portion being secured to the stem portion, the hose being secured between the socket portion and the stem portion;

a plurality of inserts are arranged in the jack part,

the method is characterized in that: before the jack part and the insert are extruded and deformed, the insert is C-shaped, and after the jack part and the insert are extruded and deformed, the joint of the opening of the previous insert and the opening of the next insert in the axial direction is arranged in a staggered mode in the circumferential direction.

2. The hose connector of claim 1, wherein: an interface is provided between the first and second ends of the stem, and the attachment portion of the sleeve is secured to the interface.

3. The hose connector of claim 1, wherein: the end of the insert is provided with a chamfer.

4. The hose connector of claim 1, wherein: the radial outer surface of the insert and the inner surface of the sleeve are respectively provided with a guide rib and a guide groove which extend along the circumferential direction.

5. The hose connector of claim 1, wherein: the radial outer surface of the insert and the inner surface of the sleeve are respectively provided with a limit rib and a limit groove which extend along the axial direction, and the limit rib or the limit groove is arranged in the middle of the circumferential direction of the C-shaped insert.

6. The hose connector of claim 1, wherein: the inserts include at least two dimensions, wherein a first insert on a side closer to the bolt has a greater axial width than a second insert on a side farther from the bolt.

7. The hose connector of claim 1, wherein: the central angle of the opening of the insert before extrusion deformation is 55-75 degrees.

8. The hose connector of claim 1, wherein: the central angle of the opening of the insert before extrusion deformation is 60 degrees.

9. The hose connector of claim 1, wherein: the angle at which the opening of the preceding insert in the axial direction is offset from the opening of the following insert in the circumferential direction is 120 degrees.

10. The hose connector of claim 1, wherein: and a torque transmitting portion disposed between the socket portion and the attachment portion.

11. The hose connector of claim 1, wherein: at least 3 axially adjacent inserts have openings arranged in a circumferential sequence.