CN201496351U

CN201496351U - Square pipe connecting structure

Info

Publication number: CN201496351U
Application number: CN200920305333XU
Authority: CN
Inventors: 孙晓球
Original assignee: Individual
Current assignee: Individual
Priority date: 2009-06-30
Filing date: 2009-06-30
Publication date: 2010-06-02
Anticipated expiration: 2019-06-30

Abstract

A square pipe connecting structure comprises a connector, wherein the connector is provided with a base body and at least two plugging posts fixedly connected on the base body, two or four axial inserting slots which are symmetrically distributed are arranged on the outer circumference of the plugging posts, elastic strips are embedded in the inserting slots, the elastic strips are locally exposed out of the inserting slots, and the inserting posts are tightly contacted with relative walls of a square pipe through the elastic strips to form tight fit with the square pipe. The structure does not need to use tools, has convenient assembly and disassembly, and can always keep firm connection between the square pipe and a connector.

Description

A kind of square tube linkage structure

Technical field

The utility model relates to the square tube linkage structure.

Background technique

China Patent No. is that the utility model patent specification of 95239748.X discloses a kind of square square tube connection set, this device is by the column or the tubular configured joint that are connected are mutually formed arbitrarily, become any angle between each joint, each joint all has eight sides, wherein four is the plane, four is outwards domed curved surface, plane and curved surface interval and symmetrical distribution.Above-mentioned connection set when with four faces of four planes on the joint and square square tube one by one at once, four curved surfaces on the joint face toward four angles of square tube just respectively.Thereby this moment, joint can insert in the square tube like a cork.Then, will laterally rotate to an angle on square tube or the joint with special spanner, four curved surfaces that make its joint respectively with four faces of square tube stretching of colliding, can fix by stretching.Above-mentioned model utility need be used instrument could rotate square tube or joint, and needs are often carried for this and equipment is showed in the advertisement of mounting or dismounting, is inconvenient.Be interference fit between aforementioned tube and the joint, be easy to distortion, and, influence being connected firmly between square tube and the joint because square tube inwall or joint curved surface can wear and tear because of often rubbing for the square tube of thin-walled.

The model utility content

A kind of square tube linkage structure that the purpose of this utility model is to propose to install and remove conveniently, is connected firmly.

For achieving the above object, the utility model is taked following technological scheme:

The utility model comprises link, link has matrix and patches post with at least 2 that are cemented on the matrix, it is characterized in that: the outer circumferential face that patches post is provided with the axial caulking groove of 2 or 4 symmetrical distributions, be embedded with elastic strip in the caulking groove, caulking groove is exposed in the elastic strip part, and each closely contacts with the square tube opposed inner walls and forms and the drive fit of square tube with elastic strip to patch post.

Each outer circumferential face that patches post all has eight sides, wherein four sides are non-working surfaces, four sides are working surfaces, non-working surface and working surface are provided with at interval, non-working surface can be that cambered surface also can be the plane, wherein a pair of working surface is the plane in four working surfaces, another is a cambered surface to working surface, it is on the working surface of cambered surface that described caulking groove is arranged on, the maximum spacing of two relative non-working surfaces is less than the spacing of square tube opposed inner walls on the link, the maximum spacing of two relative working surfaces is not more than the spacing of square tube opposed inner walls, the twoth, working surface one side on plane is connected with adjacent non-working surface circular arc, opposite side directly is connected with adjacent non-working surface, forms knuckle, and knuckle is each positioned at the same side of working surface.

The post that patches of described link is cylindrical, and columniform diameter is less than the spacing of square tube opposed inner walls.

The matrix of described link has cavity is arranged, and patches post and is provided with the through hole that communicates with cavity, and other face of matrix is provided with the hole that is used for inserting lamp socket or other accessories.

The utlity model has following good effect: 1, this structure does not need the instrument of using just energy turn square tube or link, so mounting or dismounting are convenient.2, because link utilizes elastic strip and square tube two relative inwalls closely to contact the damping of generation, form and the square tube drive fit, square tube can be out of shape, since with square tube in wall friction be elastic strip, so the square tube inwall is not easy to wear,, influence drive fit as the elastic strip wearing and tearing, only need the transposing elastic strip, the elastic strip transposing is convenient and cost is low.Owing to can become because of the wearing and tearing tube chamber of mould greatly or diminish in the course of working of square tube, this structure use elastic strip can be avoided relaxing the phenomenon generation because of tube chamber becomes big or diminishes to connect tension or connect.This structure can remain firm connection the between square tube and the link, can not cause damage to square tube.3, this structure so the direction and the angle of rotation are limited, is subjected to stop i.e. expression to be rotated in place when patching the relative rotation with square tube of post owing to patch the existence of post knuckle, brings convenience to use.

Description of drawings

For the easier quilt of content of the present utility model is clearly understood, below the specific embodiment and in conjunction with the accompanying drawings of basis, the utility model is described in further detail, wherein

Fig. 1 is that link is connected explosive view with square tube;

Fig. 2 is that link is connected External view with square tube;

Fig. 3 is the link diagrammatic sketch;

Fig. 4 is the G-G sectional view of Fig. 3;

Fig. 5 is that link is connected diagrammatic sketch with square tube;

Fig. 6 is the E-E sectional view of Fig. 5;

Fig. 7 three patches the link diagrammatic sketch of post;

Fig. 8 four patches the link diagrammatic sketch of post.

Embodiment

Embodiment 1

See Fig. 1 to Fig. 6, shown embodiment comprises link 1, and it is that foursquare matrix 1-1 patches post 1-2 with two that are cemented on two adjacent surfaces of matrix that described link 1 has the cross section, and matrix is an one with patching post.Each outer circumferential face that patches post 1-2 all has eight sides, and wherein four sides are non-working surface a, and four sides are working surface b, and non-working surface a and working surface b are provided with at interval.Four non-working surface a are planes, also can be the planes.Among four working surface b, two is the plane, and two is cambered surface.The maximum spacing of two relative non-working surface a is less than the spacing of 3 liang of relative inwalls of square tube, and the maximum spacing of two relative working surface b is not more than in the spacing of 3 liang of relative inwalls of square tube.A pair of therein for the working surface b1 of cambered surface is provided with axial caulking groove 1-2-1, be embedded with for example elastic strip 2 of rubber strip, rubber-plastic strip and so among the caulking groove 1-2-1, caulking groove is exposed in elastic strip 2 parts.

A side that is the working surface b2 on plane is connected with adjacent non-working surface a circular arc, and opposite side directly is connected with adjacent non-working surface a, forms knuckle 1-2-2 in the joint.Knuckle 1-2-2 respectively is in the same side of two working surface b2.

Patch four working surfaces on the post respectively facing to four angles of square tube 3 when link, to patch post this moment inserts in the square tube, directed half-twist, in the present embodiment, patch post 1-2 clockwise direction half-twist by Fig. 7 in square tube, making four working surfaces respectively facing to four inwalls of square tube, is slightly gapped between two working surfaces on plane and the square tube inwall, is Spielpassung.Elastic strip 2 on two cambered surfaces then closely contacts with relative square tube inwall, forms the drive fit between square tube and the link.Patch the existence of the knuckle 1-2-2 on the outer surface of column, can stop and continue relative rotation between square tube and the link, prevent to rotate excessive phenomenon generation.

Matrix 1-1 has cavity is arranged, and patches post 1-2 and is provided with the through hole 1-2-3 that communicates with cavity, and other face of matrix 1-1 is provided with the hole 1-1-2 that is used for inserting lamp socket or other accessories.

Patching the post setting on the link, can be 2～6, and Fig. 7 three patches the link diagrammatic sketch of post.Fig. 8 four patches the link diagrammatic sketch of post.

Embodiment 2

Omit accompanying drawing, patching post is cylindrical body, and cylindrical diameter is less than the spacing of square tube opposed inner walls.Be arranged with 2 or 4 axial caulking grooves on the cylindrical body, be embedded with elastic strip in the caulking groove.

Claims

1. square tube linkage structure, comprise link (1), link (1) has matrix (1-1) and at least 2 of being cemented on the matrix (1-1) patch post (1-2), it is characterized in that: the outer circumferential face that patches post (1-2) is provided with the axial caulking groove (1-2-1) of 2 or 4 symmetrical distributions, be embedded with elastic strip (2) in the caulking groove (1-2-1), caulking groove (1-2-1) is exposed in elastic strip (2) part, and each closely contacts with square tube (3) opposed inner walls and forms drive fit with square tube (3) with elastic strip (2) to patch post (1-2).

2. a kind of square tube linkage structure according to claim 1, it is characterized in that: each outer circumferential face (1-2) that patches post all has eight sides, wherein four sides are non-working surface (a), four sides are working surface (b), non-working surface (a) is provided with at interval with working surface (b), non-working surface (a) can be that cambered surface also can be the plane, wherein a pair of working surface (b2) is the plane in four working surfaces (b), another is a cambered surface to working surface (b1), it is on the working surface (b1) of cambered surface that described caulking groove (1-2-1) is arranged on, link (1) is gone up the spacing of the maximum spacing of relative two non-working surfaces (a) less than the square tube opposed inner walls, the maximum spacing of relative two working surfaces (b) is not more than the spacing of square tube (3) opposed inner walls, the twoth, the working surface on plane (b2) side is connected with adjacent non-working surface (a) circular arc, opposite side directly is connected with adjacent non-working surface (a), form knuckle (1-2-2), knuckle (1-2-2) is each positioned at the same side of working surface.

3. a kind of square tube linkage structure according to claim 1 is characterized in that: the post that patches of described link (1) is cylindrical, and columniform diameter is less than the spacing of square tube opposed inner walls.

4. a kind of square tube linkage structure according to claim 1, it is characterized in that: the matrix (1-1) of described link (1) has and cavity is arranged (1-1-1), patch post (1-2) and be provided with the through hole (1-2-3) that communicates with cavity (1-1-1), other face of matrix (1-1) is provided with the hole (1-1-2) that is used for inserting lamp socket or other accessories.