CN217386625U

CN217386625U - Corner connecting piece and display rack

Info

Publication number: CN217386625U
Application number: CN202220836851.XU
Authority: CN
Inventors: 喻光林
Original assignee: Individual
Current assignee: Individual
Priority date: 2022-04-12
Filing date: 2022-04-12
Publication date: 2022-09-06
Anticipated expiration: 2032-04-12

Abstract

The embodiment of the application discloses a corner connecting piece and an exhibition frame, wherein the corner connecting piece comprises a transverse embedded part, a vertical embedded part and a connecting part, the transverse embedded part extends along a first direction, and the vertical embedded part extends along a vertical direction; the transverse embedding part and the vertical embedding part are arranged at intervals on two opposite side wall surfaces in the first direction so as to form an embedding groove with an upward opening in a surrounding manner; the connecting part is connected with two side wall surfaces of the transverse embedded part and the vertical embedded part which are opposite to each other in the first direction; the connecting part is positioned in the embedding groove and divides the embedding groove into a first embedding cavity and a second embedding cavity which are positioned in the second direction, and the vertical direction, the first direction and the second direction are pairwise perpendicular. The utility model discloses the corner connecting piece is when can hiding in the section bar completely for the assembly between horizontal pipe and the vertical pipe is more simple swift and firm, and is low to the technology and the required precision of section bar.

Description

Corner connecting piece and display rack

Technical Field

The application relates to the field of advertisement display, in particular to a corner connecting piece and a display rack.

Background

At present, a plurality of places need to be provided with display frames, for example, advertisement poster frames are arranged in stores and commercial places, propaganda prompt display frames are arranged in epidemic prevention code scanning places, and advertisement pictures for propaganda are usually printed and then installed on the display frames for displaying propaganda.

The exhibition frame that uses at present is mostly the panel beating iron pipe welding, and this type of structure is firm though, nevertheless requires highly to welding personnel's welding level, consumes the manual work very much and polishes or assemble, and the solder joint exposes unattractive, is difficult for transportation and packing, and this can't satisfy the demand that modern society pursue simple easy-to-use to advertisement exhibition frame. At present, the display rack also adopts a mode of connecting the corner connectors of the section bar outer sleeves, and the mode enables the corner connectors to be exposed, so that the integral aesthetic property is poor.

Among the correlation technique, there is the frame to adopt embedded angle sign indicating number, and present embedded angle sign indicating number roughly is L shape, if will make the angle sign indicating number hide completely, this needs to make the terminal surface of vertical pipe and horizontal pipe design to dock again behind the inclined plane of specific angle, the butt joint plane of horizontal pipe and vertical pipe concatenation extends along the diagonal of horizontal pipe and vertical pipe, then section bar technology and the required precision of drawing the frame are high, if the section bar precision is not high, then can make vertical pipe, the degree of agreeing with between horizontal pipe and the angle sign indicating number is low, the assembly is insecure, take place easily and rock. And the corner connectors cannot be completely hidden, so that the overall aesthetic property is influenced.

The above is only for the purpose of assisting understanding of the technical solution of the present invention, and does not represent an admission that the above is the prior art.

SUMMERY OF THE UTILITY MODEL

In view of the above problem, the utility model provides a corner connecting piece when can hide in the section bar completely for the assembly between horizontal pipe and the vertical pipe is more simple swift and firm, and is low to the technology and the required precision of section bar.

In order to achieve the above purpose, the corner connector provided by the utility model comprises a horizontal jogged joint part, a vertical jogged joint part and a connecting part, wherein,

the transverse embedded part extends along a first direction, and the vertical embedded part extends along a vertical direction; the transverse embedding part and the vertical embedding part are arranged at intervals on two side wall surfaces opposite to each other in the first direction so as to form an embedding groove with an upward opening in a surrounding manner;

the connecting part is connected with two side wall surfaces of the transverse embedded part and the vertical embedded part which are opposite to each other in the first direction; connecting portion are located in the embedding groove, and will the embedding groove is separated and is located first embedding chamber and second embedding chamber in the second direction, vertical direction, first direction and two liang of verticality of second direction.

In an embodiment, the vertical engaging portion is disposed in a frame shape, the vertical engaging portion has a first sidewall and a second sidewall oppositely disposed in the second direction, and a third sidewall connecting the first sidewall and the second sidewall and far away from one side of the horizontal engaging portion, and the connecting portion extends into a space enclosed by the vertical engaging portion and is fixedly connected to an inner wall surface of the third sidewall.

In an embodiment, the corner connector further includes a first bottom plate, a lower end of the vertical caulking part is fixedly connected to the first bottom plate, and a projection of the vertical caulking part along the vertical direction is located in an outer contour area of the first bottom plate; the bottom wall surface of the transverse embedding part is positioned above the bottom wall surface of the first bottom plate.

In an embodiment, the bottom wall surface of the first bottom plate is a convex arc surface.

In one embodiment, the first side wall and the second side wall face the wall surface of the transverse caulking part and are at least partially opposite to the peripheral wall of the transverse caulking part in the first direction.

In one embodiment, the corner connecting piece further comprises a second bottom plate, the transverse scarf joint part is cylindrical and surrounds the periphery of the second bottom plate, and an opening is formed in the side wall, facing the vertical scarf joint part, of the transverse scarf joint part; the connecting part comprises a first connecting plate and a second connecting plate which are opposite to each other in the second direction and are arranged at intervals, and the first connecting plate and the second connecting plate are respectively connected to the edges of two sides of the opening.

In one embodiment, the outer wall surfaces of the first side wall and the second side wall are provided with fasteners; and/or the presence of a gas in the gas,

a reinforcing rib plate is connected between the first connecting plate and the second connecting plate and extends vertically; and/or the presence of a gas in the gas,

and a reinforcing rib is connected between the inner wall surface of the transverse embedded part and the inner wall surface of the second bottom plate.

In one embodiment, the connecting portion, the transverse scarf joint portion and the vertical scarf joint portion are integrally formed.

The utility model also provides an exhibition frame, including support main part and corner connecting piece, wherein, the support main part includes adjacent horizontal pipe and vertical pipe, the horizontal pipe extends along the first direction, the vertical pipe extends along the vertical direction, the vertical pipe is seted up the guide way towards the lateral wall of horizontal pipe, the guide way extends along the length direction of vertical pipe;

the corner connecting piece comprises a transverse embedded part, a vertical embedded part and a connecting part, wherein,

the connecting part is connected with two side wall surfaces of the transverse embedded part and the vertical embedded part which are opposite to each other in the first direction; the connecting part is positioned in the embedding groove and divides the embedding groove into a first embedding cavity and a second embedding cavity which are positioned in the second direction, and the vertical direction, the first direction and the second direction are vertical in pairs;

the transverse scarf joint part of the corner connecting piece is embedded inside the end part of the transverse pipe adjacent to the vertical pipe, and the vertical scarf joint part of the corner connecting piece is embedded inside the end part of the vertical pipe adjacent to the vertical pipe; the connecting portion of the corner connecting piece is slidably mounted in the guide groove, and the vertical pipe faces the side wall of the transverse pipe and is embedded in the embedding groove of the corner connecting piece.

In an embodiment, the vertical pipe includes a pipe main body and two opposite insertion plates, the side wall of the pipe main body facing the transverse pipe is provided with the guide groove, the insertion plates extend from the vertical edge of the guide groove to the inner cavity of the pipe main body, and the two insertion plates clamp the connecting portion in the second direction.

The corner connecting piece of the utility model is arranged at the interval of two side wall surfaces opposite to each other in the first direction by the transverse embedded part and the vertical embedded part to form an embedded groove which is open upwards in a surrounding way, and the connecting part is connected with the two side wall surfaces opposite to each other in the first direction by the transverse embedded part and the vertical embedded part; connecting portion are located in the embedding groove, and will the embedding groove is separated and is located first embedding chamber and second embedding chamber in the second direction, vertical direction, first direction and two liang of verticality of second direction. So for horizontal scarf joint portion is connected through connecting portion with vertical scarf joint portion, and horizontal scarf joint portion sets up with vertical scarf joint portion side by side and the interval on the first direction, forms first scarf joint portion between horizontal scarf joint portion, the vertical both sides wall face in opposite directions of scarf joint portion and inlays and put the chamber with the second, and the scarf joint groove extends along vertical direction, and uncovered setting up, and overall structure is simple reliable, easily processing.

When the corner connecting piece is connected with the transverse pipe and the vertical pipe, the transverse embedding part of the corner connecting piece can be completely embedded in the transverse pipe, the vertical embedding part can be completely embedded in the vertical pipe, the upward-opening first embedding cavity and the second embedding cavity formed between the transverse embedding part and the vertical embedding part can be embedded by the vertical pipe towards the side wall of the transverse pipe, the bottom surface of the vertical pipe can move to the position which is parallel and level with the bottom surface of the transverse pipe relative to the vertical embedding part, namely, the side wall surface of the transverse pipe can be abutted to the end surface of the transverse pipe. Therefore, the corner connecting piece can be completely hidden in the transverse pipe and the vertical pipe, the integral structure is compact and attractive, meanwhile, the butt joint face of the transverse pipe and the vertical pipe extends in the vertical direction, and the end face of the butt joint of the transverse pipe and the vertical pipe is not required to be designed into an inclined face with a specific angle. On one hand, the forming process of the transverse pipe and the vertical pipe can be simplified, the end face of the transverse pipe can be directly abutted against the side wall face of the vertical pipe, the precision requirement on the sectional material is low, compared with the mode that the transverse pipe and the vertical pipe are provided with inclined end faces for butt joint, the corner connecting piece of the utility model has higher fault tolerance rate on the transverse pipe and the vertical pipe during installation, and low assembly precision, so that the transverse pipe and the vertical pipe are connected through the corner connecting piece and then are more firm and stable in whole, are not easy to shake, are convenient to disassemble and assemble, and are easy to transport and package; on the other hand, the upward open embedding groove of the corner connecting piece can guide and clamp the vertical pipe, so that the connection between the corner connecting piece and the vertical pipe is smoother, faster, more stable and more reliable.

Drawings

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

Fig. 1 shows a schematic structural view of an embodiment of the corner connector of the present invention;

FIG. 2 is a top view of the corner connector of FIG. 1;

FIG. 3 is a schematic view of another angle of the corner connector of FIG. 1;

fig. 4 is a schematic structural view of an embodiment of the display rack of the present invention;

FIG. 5 is an enlarged view of a portion of FIG. 4 at A;

fig. 6 is an exploded view of the display rack of fig. 4;

fig. 7 is a schematic view of the display rack in fig. 6 at another angle;

FIG. 8 is an enlarged view of a portion of FIG. 7 at B;

fig. 9 is a cross-sectional view of the display rack of the present invention;

FIG. 10 is an enlarged view of a portion of FIG. 9 at C;

fig. 11 is an angled cross-sectional view of the display rack of fig. 4;

FIG. 12 is an enlarged view of a portion of FIG. 11 at D;

fig. 13 is a cross-sectional view of the display rack of fig. 4 at another angle;

fig. 14 is a partial enlarged view at E in fig. 13.

The reference numbers illustrate:

reference numerals	Name (R)	Reference numerals	Name (R)	Reference numerals	Name (R)
						100	Corner connecting piece	124	Fastener	150	First base plate
110	Transverse caulking part	130	Connecting part	160	Second bottom plate
						111	Opening of the container	131	First connecting plate	200	Support main body
112	Reinforcing rib	132	Second connecting plate	210	Transverse tube
						120	Vertical scarf joint portion	133	Reinforced rib plate	220	Vertical pipe
121	First side wall	140	Embedding groove	221	Guide groove
						122	Second side wall	141	The first embedding cavity	222	Tube body
123	Third side wall	142	Second embedding cavity	223	Plug board

The objects, features and advantages of the present invention will be further described with reference to the accompanying drawings.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. 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 application. In addition, the technical solutions in the embodiments may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should not be considered to exist, and is not within the protection scope of the present invention.

The utility model provides a corner connecting piece.

In the embodiment of the present invention, referring to fig. 1 to 3, the corner connecting member 100 includes a horizontal engaging portion 110, a vertical engaging portion 120 and a connecting portion 130, wherein,

the transverse caulking portions 110 extend in a first direction, and the vertical caulking portions 120 extend in a vertical direction; the transverse embedding part 110 and the vertical embedding part 120 are arranged at intervals on two opposite side wall surfaces in the first direction so as to form an embedding groove 140 which is open upwards in a surrounding manner;

the connecting portion 130 connects two side wall surfaces of the transverse caulking portion 110 and the vertical caulking portion 120 which are opposite to each other in the first direction; the connecting portion 130 is located in the embedding slot 140, and divides the embedding slot 140 into a first embedding cavity 141 and a second embedding cavity 142 located in a second direction, and the vertical direction, the first direction and the second direction are perpendicular to each other.

In this embodiment, the corner connector 100 is used to connect two vertical profiles, such as two vertical frames, two vertical pipes, etc. The corner connecting member 100 may be used in many applications, such as a picture frame, a display frame, a door frame, etc., and is not particularly limited thereto. The material of the corner connector 100 may be selected according to different applications, for example, the material of the corner connector 100 may be rubber, alloy, plastic, and the like, and is not limited herein. The shapes of the transverse caulking part 110 and the vertical caulking part 120 can be selected and designed according to the cross section shape of the sectional material, for example, when the sectional material adopts a square tube, the cross section shapes of the transverse caulking part 110 and the vertical caulking part 120 are arranged in a rectangular shape to be fittingly embedded in the square tube, when the sectional material adopts a round tube, the cross section shapes of the transverse caulking part 110 and the vertical caulking part 120 are arranged in a round shape to be fittingly embedded in the round tube, and the specific shapes of the transverse caulking part 110 and the vertical caulking part 120 are not limited. The first direction, the second direction and the vertical direction are perpendicular to each other, and the first direction and the second direction may specifically be a front-back direction and a left-right direction in the transverse direction. The lateral caulking portions 110 extend in a first direction to be caulked in the lateral tubes 210 in the first direction, and the vertical caulking portions 120 extend in a vertical direction to be caulked in the vertical tubes 220 in the vertical direction.

It can be understood that the horizontal caulking portions 110 and the vertical caulking portions 120 are connected by the connecting portion 130, so that the horizontal caulking portions 110 and the vertical caulking portions 120 are arranged side by side and spaced apart in the first direction. Thus, the horizontal engaging portion 110 and the vertical engaging portion 120 form an upwardly open engaging groove 140 between two opposite sidewalls in the first direction. The up-down orientation here coincides with the vertical direction, i.e., the embedding slot 140 has an opening facing upward in the vertical direction. The connecting portions 130 may be disposed in a plate shape or a strip shape, and the shape and number of the connecting portions 130 may be selected and designed according to actual requirements, which is not specifically limited herein. The insertion groove 140 is divided into the first insertion groove 140 and the second insertion groove 140 in the second direction by the connection portion 130, the connection portion 130 is substantially connected at a position in the middle of the horizontal insertion portion 110 and the vertical insertion portion 120 in the second direction, and the width of the connection portion 130 is smaller than the width of the horizontal insertion portion 110 and the vertical insertion portion 120. The transverse caulking part 110, the vertical caulking part 120 and the connecting part 130 can be integrally formed or separately formed, and the fixing connection can be realized by welding, melting and the like. Alternatively, the connecting portion 130, the horizontal caulking portion 110 and the vertical caulking portion 120 are integrally formed. Therefore, the structural strength of the whole corner connecting piece 100 is higher, the product performance is better, and the service life is longer.

When the corner connector 100 is connected with the transverse pipe 210 and the vertical pipe 220, the transverse embedding part 110 is embedded in the transverse pipe 210 along the first direction, the vertical pipe 220 is embedded in the vertical pipe 220 along the vertical direction, and the vertical pipe 220 can be embedded in the first embedding cavity 141 and the second embedding cavity 142 from top to bottom towards the side wall of the transverse pipe 210 along the vertical direction. So, the horizontal embedded portion of corner connecting piece 100 can embed completely in horizontal pipe 210, and vertical embedded portion can embed completely in vertical pipe 220, and makes the concatenation line of horizontal pipe 210 and vertical pipe 220 extend along vertical direction, then the end wall of horizontal pipe 210 can butt vertical pipe 220's lateral wall to realize the concatenation of horizontal pipe 210 and vertical pipe 220. Therefore, the end surfaces of the transverse pipe 210 and the vertical pipe 220 do not need to be arranged into inclined surfaces, the transverse pipe 210 and the vertical pipe 220 can be completely hidden in the section, meanwhile, the assembly between the transverse pipe 210 and the vertical pipe 220 is simpler, quicker and more stable, and the requirements on the process and the precision of the section are low. In addition, the embedding groove 140 can guide the installation of the vertical pipe 220, so that the connection between the corner connector 100 and the vertical pipe 220 is more stable and reliable. In order to further ensure the connection stability between the corner connector 100 and the horizontal pipe 210 and the vertical pipe 220, after the horizontal caulking part 110 is embedded in the horizontal pipe 210 and the vertical caulking part 120 is embedded in the vertical pipe 220, the horizontal caulking part 110 and the horizontal pipe 210, and the vertical caulking part 120 and the vertical pipe 220 can be fastened and connected through screws.

The corner connecting member 100 of the present invention is configured to enclose the two opposite side wall surfaces of the horizontal inserting portion 110 and the vertical inserting portion 120 in the first direction to form an upward-opening inserting groove 140, and the connecting portion 130 connects the two opposite side wall surfaces of the horizontal inserting portion 110 and the vertical inserting portion 120 in the first direction; the connecting portion 130 is located in the embedding slot 140, and divides the embedding slot 140 into a first embedding cavity 141 and a second embedding cavity 142 located in a second direction, and the vertical direction, the first direction and the second direction are perpendicular to each other. So for horizontal scarf joint portion 110 is connected through connecting portion 130 with vertical scarf joint portion 120, and horizontal scarf joint portion 110 sets up with vertical scarf joint portion 120 in the first direction side by side and interval, forms first scarf joint chamber 141 and second scarf joint chamber 142 between the wall face of horizontal scarf joint portion 110, the vertical both sides in opposite directions of scarf joint portion 120, and the scarf joint groove extends along vertical direction, and uncovered setting up, overall structure is simple reliable, easily processing.

When the corner connector 100 connects the horizontal tube 210 and the vertical tube 220, the horizontal embedding portion 110 of the corner connector 100 can be completely embedded in the horizontal tube 210, the vertical embedding portion 120 can be completely embedded in the vertical tube 220, and the first embedding cavity 141 and the second embedding cavity 142, which are formed between the horizontal embedding portion 110 and the vertical embedding portion 120 and open upwards, can be used for embedding the vertical tube 220 towards the side wall of the horizontal tube 210, so that the bottom surface of the vertical tube 220 can move to a position flush with the bottom surface of the horizontal tube 210 relative to the vertical embedding portion 120, that is, the end surface of the horizontal tube 210 can abut against the side wall surface of the vertical tube 220. Thus, while ensuring that the corner connector 100 can be completely hidden in the transverse pipe 210 and the vertical pipe 220, the whole structure is compact and beautiful, the butt joint surface of the transverse pipe 210 and the vertical pipe 220 extends in the vertical direction, and the end surface of the butt joint of the transverse pipe 210 and the vertical pipe 220 does not need to be designed to be an inclined surface with a specific angle. On one hand, the forming process of the transverse pipe 210 and the vertical pipe 220 can be simplified, the end face of the transverse pipe 210 can be directly abutted against the side wall face of the vertical pipe 220, the precision requirement on the sectional material is low, and compared with the mode that the transverse pipe 210 and the vertical pipe 220 are provided with inclined end faces for butt joint, the fault tolerance rate of the corner connecting piece 100 to the transverse pipe 210 and the vertical pipe 220 is higher when the corner connecting piece is installed, the assembling precision is low, and the whole body is firmer and more stable after the transverse pipe 210 and the vertical pipe 220 are connected through the corner connecting piece 100, is not easy to shake, is convenient to disassemble and assemble, and is easy to transport and package; on the other hand, the embedding groove 140 with the upward opening of the corner connecting piece 100 can guide and clamp the vertical pipe 220, so that the connection between the corner connecting piece 100 and the vertical pipe 220 is smoother, faster, more stable and more reliable.

In an embodiment, as shown in fig. 1 and fig. 2, the vertical engaging portion 120 is disposed in a frame shape, the vertical engaging portion 120 has a first sidewall 121 and a second sidewall 122 disposed opposite to each other in the second direction, and a third sidewall 123 connecting the first sidewall 121 and the second sidewall 122 and away from the lateral engaging portion 110, and the connecting portion 130 extends into the enclosed space of the vertical engaging portion 120 and is fixedly connected to an inner wall surface of the third sidewall 123.

In this embodiment, the vertical engaging portion 120 is disposed in a frame shape, and the vertical engaging portion 120 is a hollow structure, so that the weight of the vertical engaging portion 120 can be reduced, the connection requirement can be met, and the material can be saved, thereby effectively reducing the manufacturing cost of the corner connector 100. The vertical engaging portion 120 has a first sidewall 121 and a second sidewall 122 oppositely disposed in the second direction, and a third sidewall 123 connecting the first sidewall 121 and the second sidewall 122 and far away from the lateral engaging portion 110, so that the whole vertical engaging portion 120 can be a semi-enclosed plate-shaped structure, and the vertical engaging portion 120 is disposed towards the lateral engaging portion 110 in an open manner, so that the connecting portion 130 extends into the enclosed space of the vertical engaging portion 120. Of course, the vertical engaging portion 120 may also be a fully-enclosed structure, so that the connecting portion 130 passes through the vertical engaging portion 120 and extends into the enclosed space of the vertical engaging portion 120. And through making connecting portion 130 extend to the enclosure of vertical scarf joint portion 120 in closing the space to with the internal wall fixed connection of third sidewall 123, so, connecting portion 130 is when guaranteeing horizontal scarf joint portion 110 and vertical scarf joint portion 120 firm connection, connecting portion 130 stretches into the enclosure of vertical scarf joint portion 120 and can play the additional strengthening to the structure of vertical scarf joint portion 120 in closing the space, and then makes the connection between whole vertical scarf joint portion 120 and the vertical pipe 220 more firm reliable.

Further, referring to fig. 1 to 3, the corner connector 100 further includes a first bottom plate 150, a lower end of the vertical insertion portion 120 is fixedly connected to the first bottom plate 150, and a projection of the vertical insertion portion 120 along a vertical direction is located in an outer contour area of the first bottom plate 150; the bottom wall surface of the lateral engaging portion 110 is located above the bottom wall surface of the first base plate 150.

In this embodiment, the first bottom plate 150 and the vertical engaging portion 120 may be integrally formed, or may be fixedly connected by bonding, screwing, welding, or fusing. The first bottom plate 150 may reinforce the structural strength of the vertical caulking portion 120, so that the assembly between the entire vertical caulking portion 120 and the vertical pipe 220 is more stable and reliable. So that the projection plane of the vertical caulking part 120 projected on the first bottom plate along the vertical direction is located in the outer contour area of the first bottom plate 150, that is, the outer peripheral edge of the first bottom plate 150 is protruded out of the outer peripheral wall of the vertical caulking part 120. Thus, when the vertical pipe 220 is embedded in the vertical pipe 220, the first bottom plate 150 can abut against the end surface of the vertical pipe 220, and then the first bottom plate 150 can position the vertical pipe 220 and the vertical pipe 120, on the other hand can be used as a pipe plug of the vertical pipe 220, so that the floor is prevented from being worn by the vertical pipe 220 when the vertical pipe 220 contacts the ground. So that the bottom wall surface of the lateral engaging portion 110 is located above the bottom wall surface of the first base plate 150, and so that the first base plate 150 is located at the lowest position, the lateral tubes 210 are prevented from contacting the ground.

Further, as shown in fig. 3, the bottom wall surface of the first base plate 150 is a convex arc surface. Specifically, in the second direction, the thickness of the first base plate 150 is gradually increased from both sides to the middle. The bottom wall of the first bottom plate 150 is in the convex arc surface, so that the deformation and the buffering space of the first bottom plate 150 are larger, the effect of the first bottom plate 150 for preventing the floor from being abraded is better, and the overall supporting effect is better. In addition, the bottom wall surface of the first bottom plate 150 is set to be a convex arc surface, when the display rack is unfolded at different angles, the first bottom plate 150 is in surface contact with the ground, and the support of the display rack provided with the corner connecting piece 100 is more stable.

In an embodiment, referring to fig. 1 and fig. 2, the first sidewall 121 and the second sidewall 122 are disposed at least partially opposite to the outer peripheral wall of the transverse engaging portion 110 in the first direction, facing the wall surface of the transverse engaging portion 110. Thus, when the vertical caulking part 120 is embedded in the vertical pipe 220, the first side wall 121, the second side wall 122 and the horizontal caulking part 110 can better clamp the side wall of the vertical pipe 220 facing the horizontal pipe 210, so that the connection between the vertical pipe 220 and the corner connecting piece 100 is more stable, and the vertical pipe 220 and the corner connecting piece 100 can be effectively prevented from shaking.

In an embodiment, as shown in fig. 1 to 3, the corner connector 100 further includes a second bottom plate 160, the lateral engaging portion 110 is a cylinder surrounding the periphery of the second bottom plate 160, and an opening 111 is formed on a side wall of the lateral engaging portion 110 facing the vertical engaging portion 120; the connecting portion 130 includes a first connecting plate 131 and a second connecting plate 132 disposed opposite to and spaced apart from each other in the second direction, and the first connecting plate 131 and the second connecting plate 132 are connected to both side edges of the opening 111, respectively.

In this embodiment, the second base plate 160 and the transverse engaging portion 110 may be integrally formed, or may be fixedly connected by bonding, screwing, welding, or the like. So that the lateral walls of the lateral caulking portions 110 facing the vertical caulking portions 120 are provided with openings 111, so that the first connecting plate 131 and the second connecting plate 132 of the connecting portion 130 connect both side edges of the openings 111, respectively. So, when horizontal scarf joint portion 110 produced deformation in the second direction, can drive first connecting plate 131 and second connecting plate 132 and produce certain deformation in the second direction, then be favorable to the assembly between corner connecting piece 100 and horizontal pipe 210 and the vertical pipe 220 more. In combination with the above-mentioned embodiment in which the vertical caulking portions 120 are arranged in a frame shape, the vertical caulking portions 120, the horizontal caulking portions 110, and the connecting portions 130 are integrally thin-walled structures, and the deformation space of the entire corner connecting member 100 is large, so that the vertical caulking portions 120, the horizontal caulking portions 110, the horizontal pipes 210, and the vertical pipes 220 are more easily inserted and connected, and further, the corner connecting member 100 is more conveniently, quickly and easily disassembled and easily operated. It can be understood that, although the vertical caulking portions 120, the horizontal caulking portions 110 and the connecting portions 130 are all thin-walled structures, the whole structure may be made of materials with high structural strength, such as metal plates, hard rubber, etc., and the tight fit between the corner connecting member 100 and the profile is ensured while elastic deformation is generated to a certain degree.

In order to further improve the assembly stability between the corner connector 100 and the profile, the outer circumferential walls of the transverse and

vertical splices

110, 120 are optionally provided with a plurality of friction ribs. The horizontal and

vertical caulking portions

110 and 120 are tightly caulked in the profile by a plurality of friction ribs to ensure tight fitting and stable connection between the horizontal and vertical caulking portions 120 and the profile.

In an embodiment, referring to fig. 1 to 3, the outer wall surfaces of the first sidewall 121 and the second sidewall 122 are provided with a locking member 124. Correspondingly, a clamping hole matched with the clamping piece 124 is arranged at the position, corresponding to the clamping piece 124, of the vertical pipe 220. Thus, when the vertical embedding part 120 is embedded in the vertical pipe 220, the clamping connection is formed between the fastener 124 of the first side wall 121 and the second side wall 122 and the vertical pipe 220, so as to further ensure the stable connection between the vertical embedding part 120 and the vertical pipe 220, effectively prevent the corner connector 100 from dropping out of the vertical pipe 220, and facilitate the disassembly and assembly between the corner connector 100 and the vertical pipe 220.

In another embodiment, a reinforcing rib 133 is connected between the first connecting plate 131 and the second connecting plate 132, and the reinforcing rib 133 extends in a vertical direction. By providing the reinforcing ribs 133 between the first connecting plate 131 and the second connecting plate 132, on the one hand, the structural strength of the connecting portion 130 can be improved, and on the other hand, the first connecting plate 131 and the second connecting plate 132 can be prevented from being excessively deformed in the second direction to affect the connecting effect between the connecting portion 130 and the vertical pipe 220. The reinforcing floor 133 may be provided in plural numbers such that the plural reinforcing floors 133 are provided at intervals in the first direction. To effectively secure the coupling strength between the first and

second coupling plates

131 and 132.

Further, a reinforcing rib 112 is connected between an inner wall surface of the lateral fitting portion 110 and an inner wall surface of the second base plate 160. The number and the extension direction of the reinforcing ribs 112 can be selected and designed according to the actual requirements. The reinforcing ribs 112, the second base plate 160 and the transverse caulking portion 110 may be integrally formed to ensure the connection strength. Through setting up strengthening rib 112, can play the structure additional strengthening to second bottom plate 160 on the one hand, on the other hand makes the connection between second bottom plate 160 and the horizontal scarf joint portion 110 more firm reliable, and can prevent effectively that horizontal scarf joint portion 110 from warping excessively. In particular, the reinforcing ribs 112 may comprise at least one first rib extending in a first direction and at least one second rib extending in a second direction. Therefore, the reinforcing rib 112 has a better reinforcing effect on the second base plate 160, and the connection between the second base plate 160 and the transverse embedded portion 110 is more stable.

The utility model also provides an exhibition frame, as shown in fig. 4 to 14, the exhibition frame includes support main body 200 and corner connector 100, the concrete structure of this corner connector 100 refers to the above-mentioned embodiment, support main body 200 includes adjacent horizontal pipe 210 and vertical pipe 220, horizontal pipe 210 extends along the first direction, vertical pipe 220 extends along the vertical direction, vertical pipe 220 has seted up guide way 221 towards the lateral wall of horizontal pipe 210, guide way 221 extends along the length direction of vertical pipe 220; the transverse caulking part 110 of the corner connector 100 is embedded inside the end part of the transverse pipe 210 adjacent to the vertical pipe 220, and the vertical caulking part 120 of the corner connector 100 is embedded inside the end part of the vertical pipe 220 adjacent to the vertical pipe 220; the connecting part 130 of the corner connector 100 is slidably mounted in the guide groove 221, and the vertical tube 220 is embedded in the embedding groove 140 of the corner connector 100 towards the side wall of the horizontal tube 210; because the display rack adopts all the technical schemes of all the embodiments, the display rack at least has all the beneficial effects brought by the technical schemes of the embodiments.

In this embodiment, it can be understood that the stand body 200 of the display stand may include a plurality of transverse tubes 210 and a plurality of vertical tubes 220. The vertical tubes 220 extend substantially in the vertical direction, and the extending directions of the different vertical tubes 220 may be the same or may be arranged in an intersecting manner, that is, the vertical direction is only relative to the extending direction of the vertical engaging portion 120 of the corner connector 100, not only referring to the gravity direction, and when the placing positions of the corner connector 100 are different, the vertical directions of the corresponding vertical tubes 220 are also changed accordingly.

The vertical tube 220 may be a square tube, and the cross-sectional shape of the vertical tube 220 is rectangular. So that the side wall of the vertical pipe 220 facing the transverse pipe 210 is provided with a guide groove 221, and the guide groove 221 extends along the length direction of the vertical pipe 220. When the corner connector 100 is installed, the transverse caulking part 110 of the corner connector 100 is firstly embedded in the transverse pipe 210, the vertical pipe 220 is aligned with the vertical caulking part 120 along the vertical direction, so that the guide groove 221 of the vertical pipe 220 corresponds to the connecting part 130 between the transverse caulking part 110 and the vertical caulking part 120, then the vertical caulking part 120 is embedded in the vertical pipe 220, the guide groove 221 of the vertical pipe 220 plays a role in avoiding and guiding the connecting part 130 between the transverse caulking part 110 and the vertical caulking part 120, so that the connecting part 130 between the transverse caulking part 110 and the vertical caulking part 120 is slidably installed in the guide groove 221, and the side walls of the vertical pipe 220 facing the transverse pipe 210 are respectively embedded in the first embedding cavity 141 and the second embedding cavity 142. In this manner, after installation, the end surface of the transverse tube 210 may abut the side wall of the vertical tube 220 facing the transverse tube 210. The end face of the transverse pipe 210 and the end face of the vertical pipe 220 do not need to be provided with inclined planes at specific angles, the manufacturing process of the transverse pipe 210 and the vertical pipe 220 is further simplified, and the butt joint faces of the transverse pipe 210 and the vertical pipe 220 extend along the vertical direction, so that the splicing precision of the transverse pipe 210 and the vertical pipe 220 can be reduced, the corner connecting piece 100 can be completely hidden in the transverse pipe 210 and the vertical pipe 220, the integral consistency and the attractiveness are ensured, meanwhile, the transverse pipe 210 and the vertical pipe 220 are more stable and reliable in connection through the corner connecting piece 100, and the transverse pipe 210 and the vertical pipe 220 are not prone to shaking. In addition, the end surfaces of the vertical tubes 220 can contact the ground instead of the transverse tubes 210, so that the four vertical tubes 220 of the display rack play a supporting role, and the placing stability of the whole display rack is ensured.

Further, referring to fig. 8 to 14, the vertical tube 220 includes a tube main body 222 and two opposite insertion plates 223, the tube main body 222 is provided with a guide groove 221 facing the lateral wall of the horizontal tube 210, the insertion plates 223 extend from the vertical edge of the guide groove 221 to the inner cavity of the tube main body 222, and the two insertion plates 223 are disposed to clamp the connection portion 130 in the second direction.

In this embodiment, when the connection device is installed, the side wall of the tube main body 222 facing the horizontal tube 210 may abut against the end surface of the horizontal engaging portion 110 facing the vertical engaging portion 120, and the two insertion plates 223 may clamp the connection portion 130, so that the insertion plates 223 may guide the sliding of the connection portion 130 in the guide groove 221, and the connection between the vertical tube 220 and the corner connection member 100 is more stable and reliable. In combination with the frame-shaped embodiment of the vertical engaging portion 120, since the connecting portion 130 extends into the enclosed space of the vertical engaging portion 120 to connect with the third sidewall 123, one of the plugboards 223 is located between the first sidewall 121 and the connecting portion 130, and the other plugboard 223 is located between the second sidewall 122 and the connecting portion 130, so as to more firmly clamp the connecting portion 130.

The cross-sectional shape of the vertical tube 220 is generally concave as a whole. And the concave surface of the vertical pipe 220 facing the horizontal pipe 210 is provided with a notch at a position adjacent to the vertical caulking part 120 for the connection part 130 to penetrate. It can be understood that the shape of the transverse plane of general section bar is character cut in bas-relief, then the utility model discloses need not to change section bar structure and weight, only need set up the breach alright realize that vertical pipe 220 is connected with the inseparable cooperation of vertical scarf joint portion 120, and the processing cost is low, and installation stability is high.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, and not to limit the same; although the present application has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not necessarily depart from the spirit and scope of the corresponding technical solutions in the embodiments of the present application.

Claims

1. A corner connecting piece is characterized by comprising a transverse embedded part, a vertical embedded part and a connecting part, wherein,

the connecting part is connected with two side wall surfaces of the transverse embedded part and the vertical embedded part which are opposite in the first direction; the connecting part is positioned in the embedding groove and divides the embedding groove into a first embedding cavity and a second embedding cavity which are positioned in the second direction, and the vertical direction, the first direction and the second direction are vertical to each other.

2. The corner connector according to claim 1, wherein the vertical engaging portion is provided in a frame shape, the vertical engaging portion has a first side wall, a second side wall and a third side wall, the first side wall and the second side wall are oppositely provided in the second direction, and the third side wall connects the first side wall and the second side wall at a side away from the lateral engaging portion; the connecting part extends into the enclosed space of the vertical embedding part and is fixedly connected with the inner wall surface of the third side wall.

3. The corner connector according to claim 2, further comprising a first base plate, wherein a lower end of the vertical caulking portion is fixedly connected to the first base plate, and a projection of the vertical caulking portion along the vertical direction is located in an outer contour area of the first base plate; the bottom wall surface of the transverse embedding part is positioned above the bottom wall surface of the first bottom plate.

4. The corner connector of claim 3, wherein the bottom wall surface of the first base plate is a convex curved surface.

5. The corner connector of claim 2, wherein the first and second side walls are disposed at least partially opposite the peripheral wall of the transverse scarf joint in the first direction toward the wall of the transverse scarf joint.

6. The corner connector according to any one of claims 2 to 5, further comprising a second bottom plate, wherein the transverse scarf joint is cylindrical and surrounds the periphery of the second bottom plate, and the side wall of the transverse scarf joint facing the vertical scarf joint is provided with an opening; the connecting part comprises a first connecting plate and a second connecting plate which are opposite to each other in the second direction and are arranged at intervals, and the first connecting plate and the second connecting plate are respectively connected to the edges of two sides of the opening.

7. The corner connector of claim 6,

the outer wall surfaces of the first side wall and the second side wall are provided with clamping pieces; and/or the presence of a gas in the gas,

8. The corner connector according to claim 1, wherein the connecting portion, the lateral scarf joint portion, and the vertical scarf joint portion are integrally formed.

9. A display rack, comprising:

the support comprises a support main body, wherein the support main body comprises a transverse pipe and a vertical pipe which are adjacent, the transverse pipe extends along a first direction, the vertical pipe extends along a vertical direction, a guide groove is formed in the side wall, facing the transverse pipe, of the vertical pipe, and the guide groove extends along the length direction of the vertical pipe; and

the corner connector according to any one of claims 1 to 8, a transverse scarf of the corner connector being embedded inside an end of the transverse tube adjacent to the vertical tube, a vertical scarf of the corner connector being embedded inside an end of the vertical tube adjacent to the vertical tube; the connecting portion of the corner connecting piece is slidably mounted in the guide groove, and the vertical pipe faces the side wall of the transverse pipe and is embedded in the embedding groove of the corner connecting piece.

10. The display rack of claim 9, wherein the vertical tube comprises a tube body and two opposite insertion plates, the tube body is provided with the guide groove on a side wall facing the horizontal tube, the insertion plates extend from a vertical edge of the guide groove to an inner cavity of the tube body, and the two insertion plates clamp the connecting portion in the second direction.