CN216278826U

CN216278826U - Exhibition frame connecting device

Info

Publication number: CN216278826U
Application number: CN202122807759.9U
Authority: CN
Inventors: 承小峰; 王佳栋
Original assignee: Changzhou Lintel Display Co ltd
Current assignee: Changzhou Lintel Display Co ltd
Priority date: 2021-11-16
Filing date: 2021-11-16
Publication date: 2022-04-12
Anticipated expiration: 2031-11-16

Abstract

The utility model relates to the technical field of display equipment, in particular to a connecting device of a display rack, which comprises a connecting piece and a connecting pipe, wherein a matching component used for being inserted into the connecting pipe is arranged on the connecting piece, the matching component comprises a first matching piece, the first matching piece is fixed with the connecting piece, a second matching piece is sleeved outside the first matching piece, the first matching piece and the second matching piece can rotate relatively, a first limiting structure for limiting the mutual rotation of the first matching piece and the connecting pipe is arranged between the second matching piece and the connecting pipe, a convex part is arranged on the first matching piece, and the convex part expands and tightly attaches the second matching piece to the inner wall of the connecting pipe after the first matching piece rotates by a set angle. The installation process is simple.

Description

Exhibition frame connecting device

Technical Field

The utility model relates to the technical field of display equipment, in particular to a display rack connecting device.

Background

In the prior art, the connection mode between the pipe fittings comprises insertion connection, and the pipe fittings are connected through screws, clamping connection and the like, and the expansion mode can also be adopted for connection, if the patent with the patent number of CN201320225779.8 discloses an expansion type connecting piece for pipe connection, the lower end of a connecting bottom plate is bent to form a jacking plate, two side plates are bent at two sides of the connecting bottom plate, top plates bent to the upper part of the connecting bottom plate are arranged at the upper ends of the two side plates, one end of a jackscrew is in threaded connection with the jacking plate, the other end of the jackscrew is connected with the two top plates, and when the jackscrew is screwed, the jacking plate expands downwards, the top plates expand upwards, and the two side plates are driven to expand towards two sides to form four-side expansion connection with the inner wall of the pipe. The structure needs tools during installation, otherwise, installation firmness is affected under the condition that tightening force of jackscrews is insufficient, threads are damaged due to repeated disassembly and assembly, the whole structure is easy to scrap, and cost is high.

SUMMERY OF THE UTILITY MODEL

In order to solve the problems that the expansion connection mode of the pipe fitting needs to be installed by means of a tool and the installation process is complex in the prior art, the utility model provides the display rack connecting device which is simple in installation process.

The technical scheme adopted by the utility model for solving the technical problems is as follows:

the utility model provides an exhibition frame connecting device, includes connecting piece and connecting pipe, the connecting piece on be equipped with and be used for inserting the cooperation subassembly in the connecting pipe, the cooperation subassembly include first fitting piece, first fitting piece and connecting piece fixed, the outside cover of first fitting piece have the second fitting piece, but first fitting piece and second fitting piece relatively rotate, be equipped with the first limit structure of restriction both mutual rotations between second fitting piece and the connecting pipe, be equipped with the convex part on the first fitting piece, and the convex part expands the tight laminating at the connecting pipe inner wall with the second fitting piece after first fitting piece rotates the settlement angle.

Further, first fitting piece include the rotation axis, the second fitting piece including the tight cover that expands, the tight cover that expands include the base member and with a plurality of tight units that expand of base member integrated into one piece, adjacent tight unit that expands has the clearance between, the convex part including setting up the protruding muscle on the rotation axis.

Furthermore, the expansion unit is provided with a limit groove for limiting the convex rib.

Furthermore, the expansion unit is provided with expansion teeth. The expansion teeth can increase friction force and ensure firm installation.

Furthermore, first limit structure including set up the location boss on the base member of the tight cover that expands, the connecting pipe on be equipped with the constant head tank that the boss shape matches of location.

Furthermore, the matching assembly further comprises a second limiting structure for preventing the expansion sleeve from falling off from the rotating shaft.

Furthermore, second limit structure including setting up the first screw hole on the rotation axis, the rotation axis top is equipped with spacing piece, first screw hole in the cooperation have first screw, and first screw presses on spacing piece.

Furthermore, the connecting piece and the rotating shaft are fixed through a second screw, and a second threaded hole matched with the second screw is formed in the rotating shaft.

Furthermore, the rotating shaft comprises a shaft body and a plurality of annular ribs fixed with the shaft body or integrally formed, and the annular ribs comprise first annular ribs used for forming first threaded holes and at least two second annular ribs used for forming second threaded holes.

Furthermore, the first annular rib and/or the second annular rib protrude out of the shaft body to form the convex rib.

Has the advantages that:

(1) the matching assembly is pre-matched on the base plate to form the foundation assembly, when the foundation assembly and the connecting pipe are installed, the connecting piece is only required to be screwed, so that the first matching piece and the second matching piece rotate relatively, and the second matching piece is tightly attached to the connecting pipe in an expanding manner, so that the installation can be realized, and therefore, tools are not required when the foundation assembly and the connecting pipe are installed, and the installation process is simple;

(2) the expansion assembly is realized by matching the convex ribs with the expansion sleeves, and the expansion sleeves are made of materials capable of elastically deforming, so that the expansion sleeves can be used repeatedly, and the cost is saved;

(3) the expansion sleeve and the rotating shaft can be detached, and the expansion sleeve or the rotating shaft can be independently replaced, so that the device is more flexible;

(4) the convex ribs enter the limiting grooves after rotating, the limiting grooves limit the convex ribs, and the convex ribs are not easy to rotate out of the limiting grooves, so that firm installation is ensured;

(5) the annular rib can process the screw hole on the one hand, and another is convenient, and the annular rib forms protruding muscle from the axle main part, and consequently, the structure is more integrated, save material, reduce cost.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on the drawings without creative efforts.

Fig. 1 is a perspective view illustrating a rotary shaft according to the present invention;

FIG. 2 is a front view of the expansion sleeve of the present invention;

FIG. 3 is a top view of the expansion sleeve of the present invention;

FIG. 4 is a perspective view of the expansion sleeve of the present invention;

FIG. 5 is an exploded view of the foundation assembly;

FIG. 6 is an overall view of the foot assembly;

FIG. 7 is a first schematic view of the installation process of the foot assembly and the connecting tube;

FIG. 8 is a second schematic view of the installation process of the foot assembly and the connecting tube;

FIG. 9 is a schematic view of the completion of the installation of the foot assembly and the connecting tube;

FIG. 10 is an interior view of the completed installation of the foot assembly and connecting tube.

Wherein, 1, connecting pipe, 11, constant head tank, 2, footing board, 3, rotation axis, 31, protruding muscle, 32, axle main part, 33, first annular muscle, 34, second annular muscle, 4, the tight cover that expands, 41, base member, 411, location boss, 42, the tight unit that expands, 421, spacing groove, 422, the tight tooth that expands, 5, spacing piece, 6, first screw, 7, second screw.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the utility model, its application, or uses. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.

The relative arrangement of the components and steps, the numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description. Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate. In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.

In the description of the present invention, it is to be understood that the orientation or positional relationship indicated by the orientation words such as "front, rear, upper, lower, left, right", "lateral, vertical, horizontal" and "top, bottom", etc. are usually based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and in the case of not making a reverse description, these orientation words do not indicate and imply that the device or element being referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore, should not be considered as limiting the scope of the present invention; the terms "inner and outer" refer to the inner and outer relative to the profile of the respective component itself.

Spatially relative terms, such as "above … …," "above … …," "above … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

It should be noted that the terms "first", "second", and the like are used to define the components, and are only used for convenience of distinguishing the corresponding components, and the terms have no special meanings unless otherwise stated, and therefore, the scope of the present invention should not be construed as being limited.

As shown in fig. 1-10, a exhibition frame connecting device, including connecting piece and connecting pipe 1, be equipped with the cooperation subassembly that is used for inserting in the connecting pipe 1 on the connecting piece, the cooperation subassembly includes first fitting piece, first fitting piece is fixed with the connecting piece, the outside cover of first fitting piece has the second fitting piece, first fitting piece and second fitting piece can rotate relatively, be equipped with the first limit structure of restriction both mutual rotations between second fitting piece and the connecting pipe 1, be equipped with the convex part on the first fitting piece, and the convex part expands the tight laminating at connecting pipe 1 inner wall with the second fitting piece after first fitting piece rotates and sets for the angle.

As shown in fig. 1-4, the first fitting piece includes the rotation axis 3, the second fitting piece includes the expansion sleeve 4, the expansion sleeve 4 includes the base body 41 and a plurality of expansion units 42 integrally formed with the base body 41, a gap is provided between adjacent expansion units 42, the convex portion includes the convex rib 31 arranged on the rotation axis 3, and the expansion unit 42 is provided with a limiting groove 421 for limiting the convex rib 31. The expansion unit 42 is provided with expansion teeth 422. The distance from the convex rib 31 to the center of the rotating shaft 3 is greater than the distance from the limiting groove 421 of the expansion sleeve to the center of the rotating shaft 3 in a free state, so that the expansion unit 42 of the expansion sleeve 4 can be expanded when the convex rib 31 enters the limiting groove 421, and meanwhile, the convex rib 31 is limited by the limiting groove 421 and cannot be easily rotated out.

The material of the expansion sleeve 4 is elastic deformation, the base body 41 is circular, the number of the expansion units 42 is three, and the expansion sleeve is hollow, so that the expansion units 42 can expand outwards.

In this example, the connecting pipe is a circular pipe, the first limiting structure includes a positioning boss 411 disposed on the base body 41 of the expansion sleeve 4, and the connecting pipe 1 is provided with a positioning slot 11 matching with the positioning boss 411 in shape. In the present invention, the positioning bosses 411 and the positioning grooves 11 are trapezoidal. The positioning grooves 11 are symmetrically arranged at two sides of the connecting pipe 1. Of course, the connecting tube may be a non-circular tube, and the base 41 may be directly matched with the connecting tube, so that the base 41 may be inserted into the connecting tube without rotating with respect to the connecting tube.

The fitting assembly further comprises a second limit structure for preventing the expansion sleeve 4 from falling off the rotating shaft 3. The second limiting structure comprises a first threaded hole formed in the rotating shaft 3, a limiting piece 5 is arranged above the rotating shaft 3, a first screw 6 is matched in the first threaded hole, and the first screw 6 is pressed on the limiting piece 5. The middle of the limiting sheet 5 is provided with a fixing hole for the first screw 6 to pass through. The height of rotation axis 3 is greater than the tight cover 4 that expands, and the tight cover 4 that expands is unfixed relatively, and spacing piece 5 prevents to expand tight cover 4 and drops from the connecting piece, and is concrete, and the tight cover 4 that expands also is less than the external diameter of spacing piece 5 than hole size under the tight state of expanding to guarantee that the tight cover 4 that expands can not break away from the connecting piece.

The connecting piece of the utility model can be a pipe fitting or a plate, as an embodiment of the utility model, the connecting piece is a base 2, the base 2 and the rotating shaft 3 are fixed through a second screw 7, and the rotating shaft 3 is provided with a second threaded hole matched with the second screw 7. And 2 rotating shaft fixing holes for the second screws to pass through are formed in the base plate.

The rotating shaft 3 comprises a shaft body 32 and a plurality of annular ribs fixed with the shaft body 32 or integrally formed, wherein the annular ribs comprise a first annular rib 33 used for forming a first threaded hole and at least two second annular ribs 34 used for forming a second threaded hole. The first annular rib 33 and/or the second annular rib 34 protrudes from the shaft body 32 to form the convex rib 31. Preferably, protruding muscle 31 is along axle main part 32 circumference equipartition, and the circumference equipartition can be so that 4 circumference atresss of bloated tight cover even, and stability is higher. The rotating shaft 3 is made of metal, the shaft main body 32 is a circular shaft, and the number of the convex ribs 31 is two in the utility model.

The foot margin assembly is connected with the right-angle two-way pipe, and can be directly connected with a straight pipe and the like according to actual needs.

The installation process comprises the following steps:

as shown in fig. 5 to 6, before installation, the matched components (the rotating shaft 3, the expansion sleeve 4, the limiting piece 5, the first screw 6 and the second screw 7) are firstly assembled on the base plate 2 to form the base assembly, specifically, the rotating shaft 3 is fixed on the base plate 2 by the second screw 7, then the expansion sleeve 4 is sleeved outside the rotating shaft 3, the convex rib 3 is aligned with the gap between the adjacent expansion units 41 on the expansion sleeve 4, then the limiting piece 5 is fixed on the rotating shaft 3 by the first screw 6, that is, the assembly of the base assembly is completed:

as shown in fig. 7-10, when the foot assembly and the connecting pipe are installed, the fitting assembly is inserted into the connecting pipe, the positioning boss 411 is aligned with the positioning groove 11 to enable the foot assembly and the connecting pipe to be fitted, then the foot assembly is integrally rotated by a set angle (set to 90 °), and the foot assembly can be rotated clockwise or counterclockwise to enable the convex rib 31 to enter the limiting groove 421 of the expansion sleeve 4, and at this time, the convex rib 31 already expands the expansion unit 41 of the expansion sleeve 4, so that the installation is completed.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and equivalent alternatives or modifications according to the technical solution of the present invention and the inventive concept thereof should be covered by the scope of the present invention.

Claims

1. The connecting device for the display rack is characterized by comprising a connecting piece and a connecting pipe (1), wherein a matching component used for being inserted into the connecting pipe (1) is arranged on the connecting piece, the matching component comprises a first matching piece, the first matching piece is fixed with the connecting piece, a second matching piece is sleeved outside the first matching piece, the first matching piece and the second matching piece can rotate relatively, a first limiting structure for limiting mutual rotation of the second matching piece and the connecting pipe (1) is arranged between the second matching piece and the connecting pipe, a convex part is arranged on the first matching piece, and the convex part expands and tightly attaches the second matching piece to the inner wall of the connecting pipe (1) after the first matching piece rotates for a set angle.

2. The display rack connecting device of claim 1, wherein: first fitting piece include rotation axis (3), the second fitting piece including bloated tight cover (4), bloated tight cover (4) including base member (41) and with a plurality of tight units (42) that expand of base member (41) integrated into one piece, adjacent bloated tight unit (42) between have the clearance, the convex part including setting up protruding muscle (31) on rotation axis (3).

3. The display rack connecting device of claim 2, wherein: and the expansion unit (42) is provided with a limit groove (421) for limiting the convex rib (31).

4. The display rack connecting device of claim 2, wherein: the expansion unit (42) is provided with expansion teeth (422).

5. The display rack connecting device of claim 2, wherein: first limit structure including setting up location boss (411) on base member (41) of tight cover (4) expand, connecting pipe (1) on be equipped with constant head tank (11) that match with location boss (411) shape.

6. The display rack connecting device of claim 2, wherein: the matching assembly further comprises a second limiting structure for preventing the expansion sleeve (4) from falling off from the rotating shaft (3).

7. The display rack connecting device of claim 6, wherein: the second limiting structure comprises a first threaded hole formed in the rotating shaft (3), a limiting piece (5) is arranged above the rotating shaft (3), a first screw (6) is matched in the first threaded hole, and the first screw (6) is pressed on the limiting piece (5).

8. The display rack connecting device of claim 7, wherein: the connecting piece rotating shaft (3) is fixed through a second screw (7), and a second threaded hole matched with the second screw (7) is formed in the rotating shaft (3).

9. The display rack connecting device of claim 8, wherein: the rotating shaft (3) comprises a shaft body (32) and a plurality of annular ribs fixed with the shaft body (32) or integrally formed, wherein the annular ribs comprise a first annular rib (33) used for forming a first threaded hole and at least two second annular ribs (34) used for forming a second threaded hole.

10. The display rack connecting device of claim 9, wherein: the first annular rib (33) and/or the second annular rib (34) protrude out of the shaft body (32) to form the convex rib (31).