CN211501220U

CN211501220U - Connecting piece

Info

Publication number: CN211501220U
Application number: CN201920566878.XU
Authority: CN
Inventors: 陈月江; 陈洁莹
Original assignee: Shanghai Zhujie Environmental Protection Packaging Technology Co ltd
Current assignee: Shanghai Zhujie Environmental Protection Packaging Technology Co ltd
Priority date: 2019-04-24
Filing date: 2019-04-24
Publication date: 2020-09-15
Anticipated expiration: 2029-04-24

Abstract

The utility model discloses a connecting piece, it includes first adapting unit, second adapting unit and mounting, and wherein, this second adapting unit comprises first subassembly and second subassembly, and two or more archs on the second subassembly are embedded into two or more draw-in grooves on the first subassembly to form second adapting unit. The utility model discloses a connecting piece is just owing to adopted mutually supporting draw-in groove and protruding structure to it is easier when dismantling and installing to make the connecting piece. And reinforcing structures are arranged between the U-shaped structural grooves of the connecting pieces and are spaced at a certain distance to enhance the firmness of the connecting pieces. And the utility model discloses a connecting piece can be under the prerequisite that does not need a large amount of angle aluminium, screw or nut, through assembling the connecting piece (smallclothes are handled easily) modularization that will process in advance and obtain packaging container, and this packaging container's structure and specification can change at will to the material can reuse, possesses environmental protection and energy saving, not extravagant.

Description

Connecting piece

Technical Field

The utility model relates to a connecting piece, concretely relates to a connecting piece for packaging container.

Background

The packaging containers for automobile parts and the on-line tooling in the market at present mostly adopt square pipes and bin racks connected by a welding method, the structures and specifications of the containers cannot be changed at will after the packaging containers are shaped, but the packaging containers for the loaded parts need to be updated continuously due to the continuous change of the vehicle types of a host factory, and the cost for changing the structures and specifications of the containers combined by welding is large, so that part of factories abandon the old packaging containers, huge waste is caused, and a large yard space is occupied.

The novel connecting piece is urgently needed in the existing market, the square tube is assembled by the modular components through the connecting piece, a packaging container with the structure and specification capable of being changed at will can be obtained, the disassembly and the assembly are simple and convenient, and the modification or maintenance cost is low.

SUMMERY OF THE UTILITY MODEL

The utility model discloses a solve above-mentioned problem to a neotype connecting piece is provided. On the premise of not needing a large amount of angle aluminum, screws or nuts, the modular splicing connecting piece can obtain the packaging container with the specification and the structure being changeable at will through the connecting piece.

In order to achieve the above purpose, the technical scheme of the utility model is as follows:

the utility model provides a connecting piece, it includes:

the first connecting component is provided with a first U-shaped structure groove (401a) and a second U-shaped structure groove (401b), and the first U-shaped structure groove (401a) and the second U-shaped structure groove (401b) are respectively provided with a first through hole (401a-12) and a second through hole;

a second connection part consisting of a first component (4021) and a second component (4022),

the first assembly (4021) consists of a third U-shaped structural groove (4021a) and a fourth U-shaped structural groove (4021b), the third U-shaped structural groove (4021a) is provided with first extending holes (4021-13) corresponding to the first through holes (401a-12), and the fourth U-shaped structural groove (4021b) is provided with two or more clamping grooves (704);

the second assembly (4022) consists of a fifth U-shaped structural groove (4022a) and a rectangular block (4022b), the fifth U-shaped structural groove 4022a is provided with a second extending hole (4022-13) corresponding to the second through hole, and the rectangular block (4022b) is provided with two or more protrusions (801) corresponding to the two or more clamping grooves (704);

two or more protrusions (801) on the second component (4022) are embedded into two or more card slots (704) on the first component (4021) to form a second connection part;

a fixing member passing through the first through hole (401a-12) and the second through hole and the first protrusion hole ((4021-13) and the second protrusion hole (4022-13) to fix the first connection part and the second connection part when the notches of the first U-shaped structure groove (401a) and the second U-shaped structure groove (401b) of the first connection part are opposite to the notches of the third U-shaped structure groove (4021a) and the fifth U-shaped structure groove (4022a) of the second connection part, and a space formed when the first connection part and the second connection part are connected to receive a connected member,

one or more convex hulls (11) are arranged on the inner surfaces of the first U-shaped structural groove (401a) and the second U-shaped structural groove (401b) of any one first connecting part and the third U-shaped structural groove (4021a) and the fifth U-shaped structural groove (4022a) of the second connecting part, so that the convex hulls (11) are clamped into corresponding openings of the connected piece, and the connected piece is fixedly connected.

The utility model provides a connecting piece, it includes:

the first connecting part is provided with a first U-shaped structure groove (401a) and a second U-shaped structure groove (401b), the first U-shaped structure groove (401a) and the second U-shaped structure groove (401b) are respectively provided with a first through hole (401a-12) and a second through hole, and the first through hole (401a-12) and the second through hole are provided with internal threads;

the first assembly (4021) consists of a third U-shaped structural groove (4021a) and a fourth U-shaped structural groove (4021b), the third U-shaped structural groove (4021a) is provided with first extending holes (4021-13) corresponding to the first through holes (401a-12), and the U-shaped structural groove (4021b) is provided with two or more clamping grooves (704);

a fixing member passing through the first through hole (401a-12) and the second through hole and the first and second protrusion holes (4021-13) and (4022-13) to fix the first and second connection parts when the notches of the first and second U-shaped structure grooves (401a) and (401b) of the first connection part and the notch of the third U-shaped structure groove (4021a) and the notch of the fifth U-shaped structure groove (4022a) of the second connection part are opposite to each other, and a space formed when the first and second connection parts are connected to receive a connected member,

Furthermore, the clamping groove (704) is a dovetail groove, and the corresponding protrusion (801) is a dovetail mortise.

Further, a reinforcing structure is further provided between and spaced apart from the top side 4012 of the first U-shaped structural groove 401a and the top side of the second U-shaped structural groove 401b on the first connecting member to enhance the firmness of the connecting member.

Further, the reinforcing structure is a triangular reinforcing rib.

Further, first U type structure groove (401a), second U type structure groove (401b), third U type structure groove (4021a) and fifth U type structure groove (4022a) are by the top side, first side and second side constitution, and the top side with the contained angle between the first side with the top side with the contained angle between the second side is the same, the contained angle is 90 ~ 95 degrees to it is easier when dismantling and installing to make the connecting piece.

Further, the included angle is 91 degrees.

The utility model discloses a connecting piece is just owing to adopted mutually supporting draw-in groove and protruding structure to it is easier when dismantling and installing to make the connecting piece. And reinforcing structures are arranged between the U-shaped structural grooves of the connecting pieces and are spaced at a certain distance to enhance the firmness of the connecting pieces.

The utility model discloses a connecting piece can be under the prerequisite that does not need a large amount of angle aluminium, screw or nut, assembles through the modularization connecting piece (smallclothes are handled easily) that will process in advance and obtain packaging container, and this packaging container's structure and specification can change at will to the material can reuse, possesses energy-concerving and environment-protective, and is not extravagant.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic structural view of a packaging container 10 of the present invention;

fig. 2 is an exploded view of the first connecting member 1 of the present invention;

fig. 3 is a bottom view of the twentieth shaped member 102 of the first connecting member 1 of the present invention (seen from the bottom end 15 opposite to the extension hole 13);

fig. 4 is a schematic view of the first connecting member 1 of the present invention being fitted with a square tube;

fig. 5 is an exploded view of the second connector 2 of the present invention;

fig. 6 is a schematic view of the second connecting member 2 of the present invention being fitted with a square tube;

fig. 7 is an exploded view of an alternative construction of the second connector 2 of the present invention;

fig. 8 is a schematic view of the alternative structure 21 of the second connecting member 2 of the present invention in cooperation with a square tube;

fig. 9 is an exploded view of the third connecting member 3 of the present invention;

fig. 10 is a schematic view of the third connecting member 3 of the present invention engaged with a square tube;

fig. 11a is a schematic structural view of a first different L-shaped member 401 of a fourth connecting member 4 according to the present invention;

fig. 11b is a schematic structural view of a first component 4021 of a second different L-shaped member 402 of a fourth connector 4 according to the present invention;

fig. 11c is a schematic structural view of a second component 4022 of a second different L-shaped member 402 of a fourth connector 4 according to the present invention;

fig. 12 is a schematic structural view of a fourth connecting member 4 formed by matching a first different L-shaped member 401 and a second different L-shaped member 402 according to the present invention;

fig. 13 is a schematic view of the fourth connecting member 4 of the present invention engaged with a square tube;

fig. 14 is an exploded view of a fifth connecting member 5 according to the present invention;

fig. 15 is a schematic view of the fifth connecting member 5 and the square tube of the present invention.

Detailed Description

In order to make the technical means, creation features, achievement purposes and functions of the present invention easy to understand and understand, the present invention is further explained by combining with the specific drawings.

As shown in fig. 1, a packaging container 10 with modular connectors, the packaging container 10 comprises a bin stack for assembling automobile parts and an on-line tool. The packaging container 10 is composed of a plurality of square pipes 1001, and the square pipes 1001 are connected through modular connecting pieces. The modular connecting piece comprises a first connecting piece (a cross-shaped connecting piece) 1, a second connecting piece (an L-shaped connecting piece) 2, a third connecting piece (a T-shaped connecting piece) 3 and a fourth connecting piece (an abnormal L-shaped connecting piece) 4. Except for the fourth connector (the different L-shaped connector) 4, the connectors are all obtained by U-shaped structural groove connection. The attached piece in the embodiment shown in this figure is a square tube, as in the following figures.

As shown in fig. 2, the first connecting member (cross-shaped connecting member) 1 is composed of two first cross-shaped members (i.e., first connecting parts) 101 and a second cross-shaped member 102 (i.e., second connecting parts) which are fitted to each other, the first cross-shaped members 101 are formed by connecting U-shaped

structure grooves

101a and 101b substantially vertically and the two U-shaped structure grooves are connected to each other. The U-shaped structural channel 101a is comprised of a top side 1012, a first side 1011, and a second side 1013, the top side 1012 having an inner surface 1014, and the U-shaped structural channel 101b having a structure similar to the U-shaped structural channel 101a, with the difference that: the inner surface 1014 of the top side 1012 of the U-shaped structure groove 101a is symmetrically provided with a convex hull 11 (disposed outside the U-shaped structure groove 101 b) and a through hole 12 (disposed inside the U-shaped structure groove 101 b) extending outwards, and the convex hull 11 is used for being snapped into a corresponding opening (through hole or blind hole) (not shown) of the square tube 1001 for fixedly connecting the first connecting member with the square tube disposed at the bottom of the packaging container 10. The second zigzag member 102 is also formed by connecting substantially vertically a U-shaped groove 102a and a U-shaped groove 102b, and the two U-shaped grooves are connected to each other, and the U-shaped groove 102a is formed by a top side 1022, a first side 1021, and a second side 1023. The U-shaped structural groove 102b has a structure similar to that of the U-shaped structural groove 102a, and the difference is that: near the two sides of the U-shaped structural groove 102b, the top side 1022 of the U-shaped structural groove 102a is symmetrically provided with outward extending extension holes 13 (as shown in fig. 3) with cross sections of an outer right circle and an inner right circle (i.e., the outer surface is a square, and the inner surface is a circle), the extension holes 13 are inwardly recessed from the outer surface 1024 of the top side of the U-shaped structural groove 102a and have 4 trapezoids at the periphery and an outer right circle and an inner right circle in the middle (i.e., the outer surface is a square, and the inner surface is a circle) (as shown in fig.. When the U-shaped groove openings of the first cross-shaped member 101 and the second cross-shaped member 102 are opposed to each other, the bottom end 15 of the protruding hole 13 is adapted to abut against the hole end 14 of the through-hole 12, and a conventional fastener such as a bolt is passed through the protruding hole 13 and the through-hole 12 to fixedly connect the first cross-shaped member 101 and the second cross-shaped member 102. When the square pipe 1001 is fixedly connected to the first connector 1, one side end of the square pipe 1001 is simultaneously abutted against the outwardly extending through hole 12 and the outwardly extending hole 13, and the space formed by the U-shaped structural grooves of the first cross member 101 and the second cross member 102 when they are connected is used to accommodate the square pipe. The first connecting member 1 is used to simultaneously connect and fix four square tubes 1001 (shown in fig. 4) provided at the bottom of the packaging container 10.

As shown in fig. 5, the second connector (L-shaped connector) 2 is composed of two first L-shaped members 201 (i.e., first connecting parts) and second L-shaped members 202 (i.e., second connecting parts) which are fitted to each other, the first L-shaped members 201 are formed by connecting substantially vertically U-shaped structure grooves 201a and U-shaped structure grooves 201b, and the two U-shaped structure grooves are connected to each other. U-shaped structural channel 201a is comprised of a top side 2012, a first side 2011 and a second side 2013, top side 2012 has an inner surface 2014, and U-shaped structural channel 201b has a structure similar to U-shaped structural channel 201 a. The inner surface 2014 of the top 2012 of the U-shaped structural groove 201a and the inner surface of the top of the U-shaped structural groove 201b are symmetrically provided with a convex hull 11 (disposed outside from the junction 16 between the U-shaped structural groove 201a and the U-shaped structural groove 201 b) and a through hole 12 (disposed inside from the junction 16 between the U-shaped structural groove 201a and the U-shaped structural groove 201 b), and the convex hull 11 is used for being clamped into a corresponding opening (through hole or blind hole) (not shown) of the square tube 1001 to fixedly connect the second connecting member 2 and the square tube 1001 disposed outside and at the bottom of the packaging container 10. The second L-shaped member 202 is formed by connecting the U-shaped groove 202a and the U-shaped groove 202b substantially vertically and the two U-shaped grooves are connected to each other. The U-shaped structural groove 202a is composed of a top side 2022, a first side 2021, and a second side 2023, and the U-shaped structural groove 202b has a structure similar to the U-shaped structural groove 202 a. The top side 2022 of the U-shaped structural groove 202a and the top side of the U-shaped structural groove 202b are symmetrically provided with outward extending holes 13 having a cross section of an outer right circle and an inner right circle (i.e., outer square and inner circular), the extending holes 13 are recessed inward from the outer surfaces of the top sides of the two U-shaped structural grooves (e.g., the outer surface 2024 of the top side of the U-shaped structural groove 202 a) and have 4 trapezoids at the periphery and an outer right circle and an inner circular at the middle (i.e., outer square and inner circular). When the U-shaped groove notches of the first and second L-shaped

members

201 and 202 are opposed to each other, the bottom end 15 (shown in fig. 3) of the protruding hole 13 is respectively abutted against the hole ends 14 (shown in fig. 2) of the through-holes 12 provided on the

inner surfaces

2014 and 201b of the

top sides

2012 and 201a of the U-shaped groove 201b, while a conventional fixing member such as a bolt is passed through the protruding hole 13 and the through-holes 12 to fixedly connect the first and second L-shaped

members

201 and 202, and the space formed by the U-shaped groove between the first and second L-shaped

members

201 and 202 when connected is used for accommodating the square pipe. When the square pipe 1001 is fixedly connected to the second connector 2, one side end of the square pipe 1001 is simultaneously abutted against the through hole 12 and the protruding hole 13. The second connecting member 2 is connected to two square pipes fixedly disposed at the bottom of the packaging container 10 and close to the outside, as shown in fig. 6.

An alternative configuration 21 for the second connector 2 is that the junction 16 of the U-shaped configuration channel 201a and the U-shaped configuration channel 201b of the first L-shaped member 201 is curved (rather than square) and the junction 17 of the U-shaped configuration channel 202a and the U-shaped configuration channel 202b of the second L-shaped member 202 is curved (rather than square), as shown in fig. 7. The manner of mating the alternative structure 21 with the square tube is shown in fig. 8.

As shown in fig. 9, the third connector (T-shaped connector) 3 is composed of two first T-shaped members 301 (i.e., first connecting parts) and second T-shaped members 302 (i.e., second connecting parts) which are fitted to each other, the first T-shaped members 301 are formed by connecting substantially vertically

U-shaped structure grooves

301a and 301b, and the two U-shaped structure grooves are connected to each other. The U-shaped structural groove 301a is composed of a top side 3012, a first side 3011 and a second side 3013, the top side 3012 has an inner surface 3014, and the U-shaped structural groove 301b has a structure similar to the U-shaped structural groove 301a, except that a convex hull 11 (disposed outward from the U-shaped structural groove 301 b) and a through hole 12 (disposed inward from the U-shaped structural groove 301 b) extending outward are disposed on the inner surface 3014 of the top side 3012 of the U-shaped structural groove 301a, and the convex hull 11 is used to be snapped into a corresponding opening (through hole or blind hole) (not shown in the figure) of the square tube 1001 to fixedly connect the third connecting member 3 with the square tube 1001 disposed at the bottom and top side of the packaging container 10. The second T-shaped member 302 is formed by connecting the U-shaped structural groove 302a and the U-shaped structural groove 302b substantially vertically and the two U-shaped structural grooves are connected to each other. The U-shaped groove 302a is composed of a top side 3022, a first side 3021 and a second side 3023, and the U-shaped groove 302b has a structure similar to the U-shaped groove 302a, except that near the U-shaped groove 302b, an outward extending hole 13 having a cross section in an outer right circular shape (i.e., a square shape on the outside and a circular shape on the inside, as viewed from a direction facing the bottom end 15 of the extending hole 13) is provided on the top side 3022 of the U-shaped groove 302a, the extending hole 13 is recessed inward from the outer surface 3024 of the top side 3022 of the U-shaped groove 302a and has 4 trapezoidal shapes on the periphery and an outer right circular shape in the middle (i.e., a square shape on the outside and a circular shape on the inside). When the U-shaped slot openings of the first T-shaped member 301 and the second T-shaped member 302 are opposite, the bottom end 15 (shown in fig. 3) of the protruding hole 13 is used to abut against the hole end 14 (shown in fig. 2) of the outward protruding through-hole 12 on the top side 3012 of the U-shaped slot 301a, and a conventional fastener such as a bolt is passed through the protruding hole 13 and the through-hole 12 to fixedly connect the first T-shaped member 301 and the second T-shaped member 302, and the space formed by the U-shaped slot between the first T-shaped member 301 and the second T-shaped member 302 when they are connected is used to accommodate the square pipe. When the square pipe 1001 is fixedly connected to the third connecting member 3, one side end of the square pipe is simultaneously abutted against the outwardly extending through hole 12 and the outwardly extending hole 13. The third connecting member 3 is simultaneously connected to three square pipes fixedly provided at the top and bottom sides of the packaging container 10, as shown in fig. 10.

As shown in fig. 11a-c, the fourth connector (i.e., the different L-shaped connector) 4 is composed of two first different L-shaped members 401 (i.e., first connecting parts) and second different L-shaped members 402 (i.e., second connecting parts) which are engaged with each other, the first different L-shaped members 401 are formed by connecting first U-shaped structure grooves 401a and second U-shaped structure grooves 401b substantially vertically and communicating with each other, and the U-shaped structure grooves 401a and the U-shaped structure grooves 401b form a gap 162 therebetween. First U-shaped structural channel 401a is comprised of top side 4012, first side 4011 and second side 4013, top side 4012 having inner surface 4014, and second U-shaped structural channel 401b having a structure similar to first U-shaped structural channel 401 a. The inner surface 4014 of the top side 4012 of the first U-shaped structural groove 401a and the inner surface of the top side of the second U-shaped structural groove 401b are respectively provided with a convex hull 11 (disposed outward from the junction 161 of the first U-shaped structural groove 401a and the second U-shaped structural groove 401b) and first through holes 401a-12 and second through holes (not shown in the drawings) extending outward (disposed inward from the junction 161 of the first U-shaped structural groove 401a and the second U-shaped structural groove 401b), and the convex hull 11 is used for being snapped into corresponding openings (through holes or blind holes) (not shown in the drawings) of the square tube 1001 to fixedly connect the fourth connecting member 4 with the square tube disposed at the bottom and top corners of the packaging container 10. Second iso-L shaped member 402 is comprised of first component 4021 and second component 4022. The first component 4021 is composed of a third U-shaped structural groove 4021a and a fourth U-shaped structural groove 4021b, the third U-shaped structural groove 4021a is composed of a top side 601, a first side 602 and a second side 603, the top side 601 has an inner surface 604, and the inner surface 604 is provided with first extending holes 4021-13 extending outward. The fourth U-shaped structural slot 4021b is comprised of a top side 701, a first side 702, and a second side 703, the second side 702 having two or more slot (e.g., dovetail slots) 704 disposed thereon. The third U-shaped structural groove 4021a and the fourth U-shaped structural groove 4021b have a common side 703 and their opening directions are perpendicular to each other. The second component 4022 is comprised of a fifth U-shaped structural channel 4022a comprised of a top side 901, a first side 902, a second side 903, and a third side 905, the top side 901 having an inner surface 904, the inner surface 904 having second outwardly extending apertures 4022-13 disposed thereon, and the first and

second components

4021 and 4022 being symmetrical to the apertures on the inner surface 604 when the first and

second components

4021 and 4022 are mated to one another to form the second hetero L-shaped member 402, and a rectangular block 4022b having two or more protrusions (e.g., dovetail rivets) 801 corresponding to the two or more locking slots on the second side 702. Two or more protrusions on the second component 4022 fit into two or more slots 704 on the first component 4021, thereby forming a second iso-L-shaped member 402. When the U-shaped structural slot openings of the first and second different L-shaped

members

401 and 402 are opposite, the bottom ends (shown in FIG. 3) of the first protrusion holes 4021 to 13 and the second protrusion holes 4022 to 13 are used to abut against the hole ends (shown in FIG. 2) of the first through holes 401a to 12 and the second through holes (not shown) extending outwards from the first U-shaped structural groove 401a and the second U-shaped structural groove 401b, meanwhile, a conventional fixing member such as a bolt is passed through the first and second extension holes 4021 to 13 and 4022 to 13 and the first through holes 401a to 12 and the second through hole (not shown) to fixedly connect the first and second different L-shaped

members

401 and 402, and a space formed by the U-shaped structural groove between the first and second different L-shaped

members

401 and 402 when they are connected is used to accommodate the square pipe in the horizontal direction. In addition, when the notches of the first U-shaped structural notch 401a and the second U-shaped structural notch 401b of the first hetero L-shaped member 401 are opposed to the notches of the third U-shaped structural notch 4021a and the fifth U-shaped structural notch 4022a of the second hetero L-shaped member 402, respectively, the fourth U-shaped structural notch 4021b, the rectangular block 4022b, the third side 905 of the fifth U-shaped structural notch 4022a, and the notch 162 between the first U-shaped structural notch 401a and the second U-shaped structural notch 401b form a space 100 (having a shape corresponding to a square tube) for receiving the square tube in the vertical direction (as shown in fig. 12). Preferably, a plurality of reinforcing structures 900 (e.g., 2 triangular stiffeners) are also provided on the first iso-L401 between and spaced apart from the top side 4012 of the first U-shaped structural channel 401a and the top side of the second U-shaped structural channel 401b to enhance the strength of the connector.

As shown in fig. 14, it is preferable that the packaging container 10 further includes a fifth connecting member (linear connecting member) 5 for increasing the size of the packaging container 10 at any time according to actual needs. The fifth connector 5 is formed by two first linear members 501 (i.e., first connecting members) and second linear members 502 (i.e., second connecting members) which are fitted to each other, and the first linear members 501 are formed by U-shaped structural grooves 501 a. The U-shaped groove 501a is composed of a top side 5012, a first side 5011 and a second side 5013, the top side 5012 has an inner surface 5014, the inner surface 5014 of the top side 5012 of the U-shaped groove 501a is symmetrically provided with a convex hull 11 and a through hole 12 extending outwards (the convex hull 11 is arranged further outwards than the through hole 12), and the convex hull 11 is used for being clamped into a corresponding opening (through hole or blind hole) (not shown) on the square tube 1001 for fixedly connecting the fifth connecting element 5 with the square tube constituting the packaging container 10. The second linear member 502 is composed of a U-shaped structural groove 502b, the U-shaped structural groove 502b is composed of a top side 5022, a first side 5021 and a second side 5023, the top side 5022 has an outer surface 5024, the top side 5022 of the U-shaped structural groove 502b is symmetrically provided with two outward protruding holes 13 with cross sections in an outer right inner circle shape, the protruding holes 13 are inwards recessed from the outer surface 5024 of the top side 5022 of the U-shaped structural groove and have 4 trapezoids at the periphery and an outer right inner circle shape in the middle (i.e., the outer surface is square, and the inner surface is circular). When the U-shaped slots of the first and second

linear members

501 and 502 are opposite to each other, the bottom ends 15 (shown in fig. 3) of the two extension holes 13 are respectively used to abut against the corresponding hole ends 14 (shown in fig. 2) of the outwardly extending through holes 12 of the U-shaped slot 501a, and a conventional fixing member such as a bolt is passed through the extension holes 13 and the through holes 12 to fixedly connect the first and second

linear members

501 and 502, and the space formed by the U-shaped slots of the first and second

linear members

501 and 502 when connected is used to accommodate the square pipe. The fifth connecting member 5 is engaged with the square pipe 1001 as shown in fig. 15.

The utility model discloses a U type structure groove of all connecting pieces comprises top side, first side and second side to contained angle between this top side and this first side is the same with the contained angle between this top side and this second side, and this contained angle alpha is 90 ~ 95 degrees, preferred 91 degrees, is convenient for like this by the installation and the dismantlement of connecting piece (for example square pipe) easier.

The width L1 of the open end of the U-shaped structure groove of all the connecting pieces is 0.1-3mm larger than the width of the top side L2, preferably 0.8mm larger, so that the connecting pieces (such as square pipes) can be mounted and dismounted more easily.

The cross section of the extension hole 13 of the present invention can be in the shape of an outer circle, a right circle, an inner circle (i.e. the outer side is square, the inner side is circular) or a circle.

The utility model discloses a convex closure on the connecting piece can also set up on the U type structure groove of second adapting unit to the number of convex closure can be one or more.

The utility model provides a connecting piece shape is not restricted to cross, L shape, T shape, different L shape and straight line form, and it can also be arbitrary other shapes.

The through-hole 12 of all the above-mentioned connecting members is also internally threaded for engagement with a conventional fixing member such as a bolt. The structures of the convex hull 11, the through hole 12 and the protruding hole 13 in all the connecting pieces are the same.

The basic principles and the main features of the invention and the advantages of the invention have been shown and described above. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. A connector, characterized in that it comprises:

the second assembly (4022) consists of a fifth U-shaped structural groove (4022a) and a rectangular block (4022b), the fifth U-shaped structural groove (4022a) is provided with a second extending hole (4022-13) corresponding to the second through hole, and the rectangular block (4022b) is provided with two or more protrusions (801) corresponding to the two or more clamping grooves (704);

a fixing member which passes through the first through-holes (401a-12) and the second through-holes and the first and second protrusion holes (4021-13) and the second protrusion holes (4022-13) to fix the first and second connection parts when the notches of the first and second U-shaped structure grooves (401a) and (401b) of the first connection part are opposite to the notches of the third and fifth U-shaped structure grooves (4021a) and (4022a) of the second connection part, and a space formed when the first and second connection parts are connected to receive a connected member,

2. A connector, characterized in that it comprises:

a first connection member having a first U-shaped structure groove (401a) and a second U-shaped structure groove (401b) provided with a first through-hole (401a-12) and a second through-hole respectively, the first through-hole (401a-12) and the second through-hole having internal threads;

a fixing member passing through the first through hole (401a-12) and the second through hole and the first and second protrusion holes (4021-13, 4022-13) to fix the first and second connection parts when the notches of the first and second U-shaped structure grooves (401a, 401b) of the first connection part and the notch of the third U-shaped structure groove (4021a) of the second connection part are opposite to the notch of the fifth U-shaped structure groove (4022a) of the second connection part, and a space formed when the first and second connection parts are connected to receive a connected member,

3. The connecting piece according to claim 1 or 2, wherein the clamping groove (704) is a dovetail groove, and the corresponding protrusion (801) is a dovetail mortise.

4. The connector according to claim 1 or 2, characterized in that a reinforcement structure is further provided between and at a distance from the top side (4012) of the first U-shaped structural groove (401a) and the top side of the second U-shaped structural groove (401b) on the first connector part to enhance the firmness of the connector.

5. A connection piece according to claim 4, wherein said reinforcing structure is a triangular reinforcing bar.

6. The connector of claim 1 or 2, wherein the first U-shaped structural groove (401a), the second U-shaped structural groove (401b), the third U-shaped structural groove (4021a) and the fifth U-shaped structural groove (4022a) are each comprised of a top side, a first side and a second side, and an included angle between the top side and the first side is the same as an included angle between the top side and the second side, the included angle being 90-95 degrees.

7. The connector of claim 6, wherein the included angle is 91 degrees.