CN219932652U - Pipe fitting connection structure without rolling rib - Google Patents

Abstract

A pipe fitting connection structure without rolling ribs is used for connecting two sections of connecting pipes together, wherein a connecting head is fixed in one section of connecting pipe, a connecting sleeve which can be matched with the connecting head is fixed in the other section of connecting pipe, the two sections of connecting pipes are connected together through detachable connection of the connecting head and the connecting sleeve, and a tensioning part which can drive the outer peripheral surface of the connecting sleeve to expand outwards along the radial direction and be fastened on the inner wall of the connecting pipe is also arranged in the connecting sleeve. The advantages are that: the connecting sleeve is internally provided with the tensioning component, the tensioning component is used for driving the connecting sleeve to prop against the inner wall of the connecting pipe, so that the connecting sleeve can be firmly fixed on the connecting pipe before the connecting heads are connected, the connection between two adjacent pipe fittings can be more stable, the defect that the connecting sleeve can be fixed only by arranging rolling ribs on the connecting pipe in the prior art is avoided, the processing procedure is reduced, the appearance of a mop rod with the connecting structure of the pipe fitting is more attractive, and the whole control process is more flexible and convenient.

Description

Pipe fitting connection structure without rolling rib

Technical Field

The utility model relates to a connecting structure between pipe fittings, in particular to a pipe fitting connecting structure without rolling ribs.

Background

The pipe fitting connection is used as a common connection mechanism and is frequently applied to various fields, for example, mop rods are formed by connecting pipe fittings, the existing mop rods are basically formed by sequentially assembling a plurality of sections of connecting rods, the conventional connection modes among the connecting rods are threaded connection modes, and external threads of one pipe end of one connecting rod extend into internal threads of the pipe end of the other connecting rod to be mutually matched and screwed up so as to realize connection. The existing connection mode has the following defects: when the mop rod is shaken left and right, the force point is far away from the threaded connection position, the generated moment is larger, the two connecting rods can shake relatively, and the connection is not tight; the shaking amplitude can be gradually increased after multiple uses, and the use experience of the mop rod is deteriorated.

Aiming at the situation, china patent application number 202120003649.4 (grant bulletin number CN 214632045U) discloses a mop rod connection fastening structure which comprises at least two sections of connecting rods with inner holes connected end to end, wherein the front ends of the connecting rods are fixedly connected with connectors, the parts of the connectors exposing the connecting rods are in a round table shape, the outer surfaces of the connectors are provided with conical external threads, the parts, close to the rear ends, of the inner holes of the connecting rods are provided with connection expansion sleeves, the rear ends of the connection expansion sleeves are provided with conical internal threads, the surfaces of the connection expansion sleeves are provided with strip-shaped openings which are convenient for deformation of the connection expansion sleeves, the rear section of connecting rods are screwed in the connection expansion sleeves of the front section of connecting rods through the connectors, so that the connection expansion sleeves deform and are locked in the inner holes of the front section of connecting rods, the fixed connection between the two adjacent sections of connecting rods is realized, the whole mop rod has good strength, the structure is compact, and is stable in use and is not easy to shake, but has the defects: in order to ensure that the connecting expansion sleeve can be stably fixed on the mop rod before the connector is screwed, the connecting expansion sleeve can only be provided with rolling ribs on the connecting rod, so that the inner wall of the connecting rod forms an outwards convex limiting part, and a groove matched with the limiting part is arranged on the peripheral side of the connecting expansion sleeve, thereby forming fixation, and the reference is specifically made to cited reference documents. Thus, not only the process is increased to increase the cost, but also an unsightly rolling rib trace is formed on the outer side of the mop rod to influence the appearance.

Therefore, how to provide a pipe connecting structure without rolling ribs, which can make the connection and fixation between adjacent pipes more stable without rolling ribs, is a problem to be solved by those skilled in the art.

Disclosure of Invention

The utility model aims to solve the technical problem of providing the pipe fitting connecting structure without the rolling ribs, which is simple and compact in structure and capable of enabling the connection and fixation between adjacent pipe fittings to be more stable without increasing the rolling ribs.

The technical scheme adopted for solving the technical problems is as follows: a pipe fitting connecting structure without rolling ribs is used for connecting two sections of connecting pipes together, wherein one section of connecting pipe is internally fixed with a connector, the other section of connecting pipe is internally fixed with a connecting sleeve which can be adapted to the connector, the two sections of connecting pipes are connected together through detachable connection of the connector and the connecting sleeve, and a tensioning part which can drive the outer peripheral surface of the connecting sleeve to radially expand and be fixed on the inner wall of the connecting pipe in an expanding mode is further arranged in the connecting sleeve.

In order to optimize the structure and enable the tensioning component to better drive the connecting sleeve to extrude the inner wall of the connecting pipe, preferably, the connecting sleeve is provided with a tensioning section and a connecting section which are connected together, the tensioning component is arranged in the tensioning section and can rotate around the axis of the connecting sleeve, a first arc-shaped surface with a spiral cross section is formed on the outer circumferential surface of the tensioning component, a second arc-shaped surface which is adapted to the first arc-shaped surface is formed on the connecting sleeve, a first strip-shaped opening which is convenient for self deformation is further formed on the tensioning section along the length direction, and in a rotating state of the tensioning component, the first arc-shaped surface can extrude the second arc-shaped surface to deform the outer circumferential surface of the tensioning section to radially expand outwards.

In order to enable the tensioning component to form uniform extrusion force along the radial direction, preferably, a plurality of first arc-shaped surfaces and second arc-shaped surfaces are arranged, each first arc-shaped surface surrounds the center of the tensioning component and is distributed at intervals, and each second arc-shaped surface is arranged on the side wall of the inner hole of the connecting sleeve for the tensioning component to be embedded and distributed corresponding to the first arc-shaped surface which is matched with each second arc-shaped surface.

In order to enable the tensioning component to rotate only in a preset range, preferably, the joint positions of two adjacent first arc-shaped surfaces are staggered to form a first limiting wall on the periphery of the tensioning component, a second limiting wall which is matched with the first limiting wall is formed on the connecting sleeve, and when the tensioning component rotates to a set position, the first limiting wall can abut against the second limiting wall to limit the tensioning component on the connecting sleeve.

In order to conveniently drive the tension component to rotate, preferably, the tension component is also provided with a mounting hole for inserting a matched wrench, and the tension component is driven to rotate by rotating the wrench.

In order to enable the tension members to be better combined together when the wrench is inserted so as to prevent slipping in the process of driving the tension members, preferably, the side wall of the mounting hole is additionally provided with a positioning column for inserting and positioning the wrench.

In order to enable the tensioning part to always rotate horizontally on the connecting sleeve and play a certain guiding role when the tensioning part is inserted and extruded by the wrench, preferably, the tensioning part is provided with a limit buckle which enables the tensioning part to be located on the connecting sleeve when rotating, the joint of the tensioning section and the connecting section is provided with a notch perpendicular to the length direction for the limit buckle to be clamped, and the notch penetrates through the first strip-shaped opening.

In order to timely disperse the stress points of the outer peripheral surface of the connecting sleeve on the inner wall of the connecting pipe, so that the connecting sleeve can be better extruded and fixed, preferably, the outer peripheral surface of the connecting sleeve is also provided with a plurality of convex ribs which are vertically arranged, and the convex ribs are arranged at intervals along the circumferential direction and jointly support against the inner wall of the connecting pipe.

In order to facilitate connection between two adjacent sections of connecting pipes, preferably, the connecting sleeve with the connector is in the same place through screw-thread fit connection, the connector on be equipped with the toper external screw thread, the connecting section of connecting sleeve then be equipped with the toper internal and external screw thread of toper external screw thread looks adaptation, still be equipped with on the connecting section communicate in the breach runs through the second bar opening of toper internal and external screw thread, through the cooperation of toper internal and external screw thread and toper external screw thread, also can play certain extrusion effect to the connecting pipe inner wall.

Preferably, the connecting sleeve is provided with a conical hole, the tensioning component is a conical component, the conical component and the conical hole are connected together through a screw clamp or a screw thread, and the outer peripheral surface of the connecting sleeve can be expanded and fastened on the connecting pipe based on the mutual matching of the two conical surfaces.

Compared with the prior art, the utility model has the advantages that: through setting up the tight part that rises in this adapter sleeve, through controlling this tight part that rises and order about the outer peripheral face of adapter sleeve radially outwards expands and the inner wall of holding the connecting pipe, thereby make the adapter sleeve just firmly fixed on the connecting pipe before the connector connects, and then make the connection between two adjacent pipe fittings fix can be more firm, the defect that can only fix the adapter sleeve through setting up the round bar on the connecting pipe in having avoided prior art, when reducing processing procedure, the appearance that can also make the mop pole that has this kind of pipe connection structure more pleasing to the eye, and can also make whole control the process more nimble convenience.

Drawings

FIG. 1 is a perspective view of an embodiment of the present utility model;

FIG. 2 is a schematic diagram showing an exploded structure of an embodiment of the present utility model;

FIG. 3 is a schematic cross-sectional view of an embodiment of the present utility model;

fig. 4 is a schematic perspective view of a connecting sleeve according to an embodiment of the present utility model;

FIG. 5 is a schematic perspective view of a fixing member according to an embodiment of the present utility model;

FIG. 6 is a schematic diagram of an exploded structure of a wrench and a fixture according to an embodiment of the present utility model;

FIG. 7 is a schematic diagram of the assembly of a wrench and a fastener according to an embodiment of the present utility model.

Detailed Description

The utility model is described in further detail below with reference to the embodiments of the drawings.

Fig. 1 to 7 are schematic views of the present embodiment, in which the pipe connection structure without rolling ribs includes a connector 2 fixed on a connecting pipe 1, a connecting sleeve 3, a fixing device 4, and the like.

Referring to fig. 1 to 3, the pipe connection structure in the present embodiment is mainly used for connecting two sections of connection pipes 1 together, wherein a connection head 2 is fixed in one section of connection pipe 1, a connection sleeve 3 capable of being adapted to the connection head 2 is fixed in the other section of connection pipe 1, and the two sections of connection pipes 1 are connected together by detachable connection of the connection head 2 and the connection sleeve 3, and is characterized in that: the connecting sleeve 3 is also internally provided with a tensioning component 4 which can drive the outer peripheral surface of the connecting sleeve 3 to expand outwards along the radial direction and be fastened on the inner wall of the connecting pipe 1 in an expanding way.

In order to make the tension member 4 better drive the connecting sleeve 3 to squeeze the inner wall of the connecting tube 1, as shown in fig. 2 to 4, in this embodiment, the connecting sleeve 3 is specially configured into two sections, namely, a tension section 31 and a connecting section 32 which are integrally formed by mutually connecting, the tension member 4 is arranged on the tension section 31 and can rotate around the axis of the tension member 4, a first arc-shaped surface 4a with a spiral cross section is formed on the outer peripheral surface of the tension member 4, a second arc-shaped surface 3a which is adapted to the first arc-shaped surface 4a is formed on the connecting sleeve 3, a first strip-shaped opening 3b which is convenient for self deformation is further arranged on the tension section 31 along the length direction, the tension member 4 in a rotating state can squeeze the second arc-shaped surface 3a to deform the outer peripheral surface of the tension member 31 to expand outwards along the radial direction, meanwhile, in order to make the tension member 4 form uniform extrusion force along the radial direction, the first arc-shaped surface 4a and the second arc-shaped surface 3a are specially configured into a plurality of arc-shaped surfaces, each of the first arc-shaped surface 4a is arranged around the center of the tension member 4 and is correspondingly distributed on the first arc-shaped surface 4a corresponding to the inner hole 4a, and the arc-shaped surfaces are distributed on the connecting sleeve 4 in the corresponding to each arc-shaped surface 4. The number of the first arc-shaped surfaces 4a and the second arc-shaped surfaces 3a in the drawing is three, and more can be selected according to the requirement.

In this embodiment, in order to enable the tension member 4 to rotate only within a predetermined range, as shown in fig. 3 to 5, the joint of two adjacent first arcuate surfaces 4a on the tension member 4 is also offset to form a first limiting wall 4b on the outer periphery of the tension member 4, correspondingly, a second limiting wall 3c adapted to the first limiting wall 4b is also formed on the connecting sleeve 3, and when the tension member 4 rotates to a set position, the first limiting wall 4b can abut against the second limiting wall 3c to limit the tension member 4 on the connecting sleeve 3, and as shown in fig. 3, the direction indicated by arrow a in the drawing is the rotation direction when the tension member 4 drives the connecting sleeve 3 to radially expand outwards to abut against the inner wall of the connecting tube 1. The direction indicated by the arrow B is the rotation direction of the tension member 4 in the unlocked state by reverse rotation, and the tension member 4 is limited by touching the first limiting wall 4B and the second limiting wall 3c when reversely rotating to the set position.

In order to enable the tension member 4 to be smoothly rotated, referring to fig. 5 and 6, in this embodiment, a mounting hole 4c into which the mating wrench X is inserted is specially formed in the tension member 4, and the tension member 4 is further driven to rotate by rotating the wrench a. And, still add the reference column 4d that can supply spanner X to insert the position on mounting hole 4c lateral wall, based on this reference column 4 d's setting, can make spanner X combine together with tensioning member 4 better to make the gomphosis structure that forms more stably.

In order to enable the tension member 4 to be capable of always rotating horizontally on the connecting sleeve 3 when the wrench X is inserted and extruded, and to play a certain guiding role, so that the tension member 4 can be better horizontally limited, as shown in fig. 3 to 5, in this embodiment, a limit button 4e capable of enabling the tension member 4 to be located on the connecting sleeve 3 when rotating is provided on the tension member 4, a notch 3d perpendicular to the length direction for clamping the limit button 4e is provided at the joint of the tension section 31 and the connecting section 32, the notch 3d penetrates through the first strip-shaped opening 3b, and when the tension member 4 rotates relative to the connecting sleeve 3, the limit button 4e always slides along the edge of the notch 3d and rotates synchronously with the tension member 4, so that the tension member 4 can form better guiding and limiting on the connecting sleeve 3, and in particular, as shown in fig. 7, the direction indicated by an arrow C in fig. 7 is the insertion direction of the wrench X.

Referring to fig. 3 and 4, in this embodiment, in order to timely disperse the stress points of the outer peripheral surface of the connecting sleeve 3 on the inner wall of the connecting tube 1, a plurality of ribs 3e vertically arranged are further arranged on the outer peripheral surfaces of the tightening section 31 and the connecting section 32 of the connecting sleeve 3, and each rib 3e is arranged at intervals along the circumferential direction and abuts against the inner wall of the connecting tube 1 together.

In order to achieve a quick splice between two adjacent segments of connecting pipe 1, referring to fig. 1 and 2, in this embodiment, the connecting sleeve 3 and the connecting head 2 are connected together by screw-fitting. Meanwhile, in order to enable the connector 2 to be in threaded connection with the connecting sleeve 3, a certain extrusion effect can be achieved on the inner wall of the connecting pipe 1, a conical external thread 2a is specially arranged on the connector 2, correspondingly, a conical internal thread 3f which can be matched with the conical external thread 2a is arranged on a connecting section 32 of the connecting sleeve 3, a second strip-shaped opening 3g which can be communicated with the notch 3d and penetrates through the conical internal thread 3f is also arranged on the connecting section 32, and when the connecting sleeve 3 and the connector 2 are in a screwing state, the connector 2 can expand the outer wall of the connecting sleeve 3 to enable the connector 2 and the connecting sleeve 3 to be combined tightly.

In another embodiment, the connecting sleeve is provided with a conical hole, the tensioning component is a conical component, the conical component and the conical hole are connected together through a screw clamp or a screw thread, the embodiment is not shown in the drawing, and the tensioning principle is that the tensioning component is tensioned through the cooperation of conical surfaces.

It should be noted that, in the description of the present embodiment, the directions or positional relationships indicated by the terms "front, rear", "left, right", "inner, outer", "upper, lower", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the apparatus or element to be referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. The terms "mounted," "connected," "coupled," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

Claims (10)

1. The utility model provides a no pipe connection structure of rolling muscle for link together two sections connecting pipe (1), wherein one section connecting pipe (1) internal fixation has connector (2), another section connecting pipe (1) internal fixation can adapt to adapter sleeve (3) of connector (2), is connected and makes two sections connecting pipe (1) link together through the shirking of connector (2) and adapter sleeve (3), its characterized in that: the connecting sleeve (3) is internally provided with a tensioning component (4) which can drive the outer peripheral surface of the connecting sleeve (3) to expand outwards along the radial direction and be fastened on the inner wall of the connecting pipe (1).

2. The beadless pipe connection structure according to claim 1, wherein: the connecting sleeve (3) is provided with a tensioning section (31) and a connecting section (32) which are connected together, the tensioning part (4) is arranged in the tensioning section (31) and can rotate around the axis of the tensioning part, a first arc-shaped surface (4 a) with a spiral cross section is formed on the outer circumferential surface of the tensioning part (4), a second arc-shaped surface (3 a) which is adapted to the first arc-shaped surface (4 a) is formed on the connecting sleeve (3), a first strip-shaped opening (3 b) which is convenient for self deformation is further formed in the tensioning section (31) along the length direction, and the tensioning part (4) can extrude the second arc-shaped surface (3 a) to deform the outer circumferential surface of the tensioning section (31) to expand outwards in the radial direction under the rotating state.

3. The beadless pipe connection structure according to claim 2, characterized in that: the first arc-shaped surfaces (4 a) and the second arc-shaped surfaces (3 a) are all provided with a plurality of first arc-shaped surfaces (4 a), the first arc-shaped surfaces (4 a) surround the center of the tensioning component (4) and are distributed at intervals, and the second arc-shaped surfaces (3 a) are all arranged on the inner hole side wall of the connecting sleeve (3) for the tensioning component (4) to be embedded and distributed corresponding to the first arc-shaped surfaces (4 a) which are respectively matched.

4. A no-bead pipe connection according to claim 3, wherein: the joint of two adjacent first arc surfaces (4 a) is misplaced with each other to form a first limiting wall (4 b) at the periphery of the tensioning component (4), a second limiting wall (3 c) which is adapted to the first limiting wall (4 b) is formed on the connecting sleeve (3), and when the tensioning component (4) rotates to a set position, the first limiting wall (4 b) can prop against the second limiting wall (3 c) to limit the tensioning component (4) on the connecting sleeve (3).

5. The beadless pipe connection structure according to claim 2, characterized in that: the tensioning component (4) is also provided with a mounting hole (4 c) for inserting and matching a matched wrench (X), the wrench (A) is rotated to drive the tensioning component (4) to rotate, and the side wall of the mounting hole (4 c) is also additionally provided with a positioning column (4 d) for inserting and matching the wrench (X) for positioning.

6. The beadless pipe connection structure according to claim 2, characterized in that: the tensioning component (4) is provided with a limit buckle (4 e) which enables the tensioning component (4) to be located in the connecting sleeve (3) when rotating, a joint of the tensioning section (31) and the connecting section (32) is provided with a notch (3 d) which is perpendicular to the length direction and used for being clamped by the limit buckle (4 e), and the notch (3 d) is communicated with the first strip-shaped opening (3 b).

7. The beadless pipe connection structure according to claim 1, wherein: the outer peripheral surface of the connecting sleeve (3) is also provided with a plurality of convex ribs (3 e) which are vertically arranged, and the convex ribs (3 e) are circumferentially arranged at intervals and jointly support against the inner wall of the connecting pipe (1).

8. The non-rolling tube connection structure according to claim 6, wherein: the connecting sleeve (3) and the connecting head (2) are connected together through threaded fit.

9. The non-rolling tube connection structure according to claim 8, wherein: the connector (2) on be equipped with toper external screw thread (2 a), connecting section (32) of adapter sleeve (3) then be equipped with toper external screw thread (3 f) of toper external screw thread (2 a) looks adaptation, still be equipped with on connecting section (32) communicate in breach (3 d) and run through second bar opening (3 g) of toper internal screw thread (3 f).

10. The beadless pipe connection structure according to claim 1, wherein: the connecting sleeve is provided with a conical hole, the tensioning component is a conical component, and the conical component and the conical hole are connected together through a screw clamp or a screw thread.