CN207261403U - Connection structure, chassis assembly, spliced chassis and furniture - Google Patents

Abstract

The utility model provides a kind of connection structure, chassis assembly, spliced chassis and furniture.Connection structure includes two connecting brackets, positioning pin and maintaining part；Connecting bracket includes upper hook portion, lower hook portion, and upper hook portion and lower hook portion include hook arm and the coupler body being connected with hook arm；Upper hook portion is arranged on the top of lower hook portion, and the setting that the coupler body of upper hook portion and lower hook portion is opposite；Gap is equipped between the coupler body of upper hook portion and lower hook portion, gap forms the first insertion passage；The second insertion passage is formed between the hook arm and coupler body of upper hook portion and the hook arm and coupler body of lower hook portion；Positioning pin is inserted into the first insertion passage and the second insertion passage of two connecting brackets, and two connecting brackets are connected；Maintaining part is arranged on the side opposite with positioning pin insertion side of connecting bracket, and with positioning pin connection, positioning pin is maintained in connecting bracket.The connection structure of the utility model, can realize and quickly and easily be aligned and connect, easy to operate efficient.

Description

Connection structure, chassis assembly, splicing type chassis and furniture

Technical Field

The utility model relates to a furniture, house ornamentation field mainly relate to a connection structure, chassis subassembly, concatenation formula chassis and furniture.

Background

With the development of society and the improvement of the living standard of people, the requirements of people on furniture and home decoration are higher and higher. The types of furniture are also constantly being retrofitted. The types of furniture are moving furniture, electric furniture and deformation furniture. Furthermore, furniture in each household has certain requirements for the size specification, and particularly the size requirement of the furniture is relatively large in variation.

At present, chassis components in movable furniture, electric furniture and deformable furniture in domestic markets are designed, processed and manufactured according to the requirements of customer orders, and if various orders with different specifications and sizes exist, factories need to perform personalized customized production. In order to meet the requirements of universal chassis parts of different sizes and reduce the production and stock costs, many manufacturers propose a modular concept, i.e., two or more chassis modules are connected by splicing to realize different sizes. The existing splicing connection mode is that two chassis modules are connected together through a plurality of bolts in a bolted connection mode, a plurality of bolts are required to be operated for assembling and disassembling, the efficiency is very low, and when the connection position of the chassis modules is not high in machining precision or the installation ground is not equal, the bolt and the bolt interface cannot be accurately butted, the connection operation is more difficult.

SUMMERY OF THE UTILITY MODEL

An embodiment of the utility model provides a connection structure, chassis subassembly, concatenation formula chassis and furniture for solve current concatenation formula chassis installation inefficiency, the problem of operational difficulty.

In order to achieve the above object, an aspect of the present invention provides a connecting structure, which includes two connecting brackets, a positioning pin, and a holding portion; the connecting bracket comprises an upper hook part and a lower hook part, and the upper hook part and the lower hook part respectively comprise a hook arm and a hook body connected with the hook arm; the upper hook part is arranged above the lower hook part, and the hook bodies of the upper hook part and the lower hook part are arranged oppositely; a gap is arranged between the hook bodies of the upper hook part and the lower hook part, and the gap forms a first insertion channel; a second insertion channel is formed between the hook arm and the hook body of the upper hook part and between the hook arm and the hook body of the lower hook part; the positioning pins are inserted into the first insertion channels and the second insertion channels of the two connecting brackets to connect the two connecting brackets; the sectional areas of the first insertion channel and the second insertion channel are gradually reduced along the insertion direction of the positioning pin; the shape of the positioning pin is matched with the shape of the first insertion channel and the second insertion channel; the holding portion is provided on the opposite side of the attaching bracket from the insertion side of the positioning pin, and is connected to the positioning pin to hold the positioning pin in the attaching bracket.

Optionally, the upper hook portion includes a first upper hook portion and a second upper hook portion, the first upper hook portion and the second upper hook portion are parallel to each other with a space therebetween; the lower hook part comprises a first lower hook part and a second lower hook part, and the first lower hook part and the second lower hook part are parallel and provided with a space therebetween; the projections of the first upper hook sub-part, the first lower hook sub-part, the second upper hook sub-part and the second lower hook sub-part on a horizontal plane are sequentially arranged and do not overlap with each other; the two connecting brackets are oppositely arranged.

Optionally, the upper hook portions of the two connecting brackets are arranged in a staggered manner, the lower hook portions of the two connecting brackets are also arranged in a staggered manner, and the two connecting brackets are connected in an inserted manner; the locating pin includes first locating pin, the cross-section of first locating pin is the cross, by rear end to front end, the sectional area of first locating pin reduces gradually.

Optionally, the first positioning pin comprises four heads, the width of the heads gradually decreases along the insertion direction; and/or the locating pin is symmetrical about its axis.

Optionally, the positioning pin comprises a second positioning pin, the second positioning pin comprises two side pin portions and a middle connecting portion, and two ends of the middle connecting portion are respectively connected with the side pin portions; wherein, along the inserting direction, the inner side surfaces of the two side pin parts incline towards the mutually-away direction, and the upper surface and the lower surface of the middle connecting part are close to the middle.

A second aspect of the embodiments of the present invention provides a chassis assembly, including a first chassis module and a second chassis module, further including the aforementioned connecting structure, wherein the first chassis module and the second chassis module are provided with connecting brackets on opposite sides thereof, respectively, the connecting bracket of the first chassis module and the connecting bracket on the second chassis module form together the first insertion passage and the second insertion passage, the positioning pin is inserted from the insertion side of the connecting bracket into the first insertion passage and the second insertion passage, and the holding portion is in the connecting bracket with the side opposite to the insertion side and the positioning pin are connected.

An embodiment of the present invention provides a chassis assembly, including first chassis module and second chassis module, still include aforementioned connection structure, wherein, first chassis module with be equipped with linking bridge on the relative side of second chassis module respectively, the linking bridge of first chassis module with linking bridge plug-in connection on the second chassis module forms jointly first insert the passageway with the second inserts the passageway, first locating pin follows linking bridge inserts the side insert first insert the passageway with the second inserts the passageway, the holding part is in linking bridge with insert the opposite side with first locating pin connects.

The embodiment of the utility model provides a fourth aspect provides a chassis component, including first chassis module and second chassis module, still include aforementioned connection structure, wherein, first chassis module with be equipped with linking bridge on the relative side of second chassis module respectively, two side pin portions of second locating pin are worn to establish respectively at two chassis modules linking bridge in the first passageway that inserts, middle connecting portion pass two chassis modules linking bridge insert the passageway and connect two side pin portions, the portion of keeping is in linking bridge with insert the opposite side of side with the second locating pin is connected, the both sides of the portion of keeping respectively with first chassis module with second chassis module looks butt.

Optionally, in the foregoing chassis assembly, the holding part is further fixedly connected to the connecting bracket.

A fifth aspect of the embodiment of the present invention provides a spliced chassis, which includes two chassis assemblies as described above, wherein the two chassis assemblies are arranged side by side; the spliced chassis further comprises an expansion bracket, the expansion bracket comprises two fixing parts and a connecting part, and the connecting part is fixedly connected with the two fixing parts; two of the fixed parts of the extension bracket are respectively connected with adjacent connecting structures of two chassis assemblies, so that the two spliced chassis are connected together.

Optionally, the connecting structure of the two chassis assemblies is located between the two fixing portions.

Optionally, the fixing part is connected with the holding part of the adjacent connecting structure of the two chassis components; or the fixing part is used as a holding part of the connecting structure of the chassis assembly and is connected with the positioning pin of the connecting structure of the chassis assembly.

The embodiment of the utility model provides a sixth aspect provides a furniture, adopts aforementioned chassis subassembly, perhaps aforementioned concatenation formula chassis.

The embodiment of the utility model provides a connection structure adopts locating pin and linking bridge's mode, forms first insert passageway and second insert passageway through linking bridge to along the direction of inserting of locating pin, the sectional area of first insert passageway and second insert passageway reduces gradually, and sets up the locating pin and first insert passageway and second insert passageway shape phase-match; thus, as the positioning pin is inserted into the first insertion passage and the second insertion passage, the positioning pin presses the two connecting brackets, and the two connecting brackets are moved in the approaching direction until the two connecting brackets are firmly connected together, and the positioning pin is held in the connecting brackets by the holding portion.

The connection structure of this embodiment can bear the atress of different grade type such as drawing, pressing, bending, turning round, shearing of a plurality of degrees of freedom, and the installation is simple, only needs to push the locating pin, and is fixed tightly with holding piece and locating pin, can realize coupling mechanism's reliable connection, and it is very convenient to operate, and the influence that receives the processing defect is little, can not appear bolt, bolt hole because of the dislocation leads to connecting the difficult problem.

The embodiment of the utility model provides a chassis subassembly can realize the connection between the same or not unidimensional chassis, satisfies the demand on not unidimensional chassis.

The embodiment of the utility model provides a concatenation formula chassis can further splice into bigger concatenation formula chassis with the chassis subassembly of difference, satisfies the demand of the furniture of bigger size.

The embodiment of the utility model provides a furniture adopts chassis subassembly or concatenation formula chassis, satisfying under the manifold condition of customer's demand, has reduced the specification quantity of chassis part to the weight of single chassis part has alleviateed as far as possible, can effectively reduce the cost of stock and production, improves the efficiency of stock and production.

Drawings

Fig. 1 is a schematic view of a connection structure according to a first embodiment of the present invention;

fig. 2 is a schematic perspective view of a connecting bracket of a connecting structure according to a first embodiment of the present invention;

fig. 3 and 4 are schematic side views of a connecting bracket according to a first embodiment of the present invention;

fig. 5 is a schematic front view of a connecting bracket according to a first embodiment of the present invention;

fig. 6 is a top view of a first embodiment of the present invention;

fig. 7 is a schematic bottom view of a connecting bracket according to a first embodiment of the present invention;

fig. 8 is a schematic perspective view of a first positioning pin according to a first embodiment of the present invention;

fig. 9 is a front view schematically illustrating a first positioning pin according to a first embodiment of the present invention;

fig. 10 is a rear view schematically illustrating a first positioning pin according to a first embodiment of the present invention;

fig. 11 is a schematic top view of a first positioning pin according to a first embodiment of the present invention;

fig. 12 is a schematic view of a connection structure according to a second embodiment of the present invention;

fig. 13 is a schematic perspective view of a second positioning pin according to a second embodiment of the present invention;

fig. 14 is a rear view schematically illustrating a second positioning pin according to a second embodiment of the present invention;

3 fig. 3 15 3 is 3 a 3 schematic 3 sectional 3 view 3 of 3 a 3 surface 3 a 3- 3 a 3 of 3 a 3 second 3 positioning 3 pin 3 according 3 to 3 a 3 second 3 embodiment 3 of 3 the 3 present 3 invention 3; 3

Fig. 16 is a schematic top view of a second positioning pin according to a first embodiment of the present invention;

fig. 17 is a schematic perspective view of another angle of the second positioning pin according to the second embodiment of the present invention;

fig. 18 is a schematic structural view of a chassis assembly according to a third embodiment of the present invention;

fig. 19 is a schematic structural view of a chassis assembly according to a fourth embodiment of the present invention;

fig. 20 is a schematic structural diagram of a spliced chassis according to a fifth embodiment of the present invention;

fig. 21 is a schematic structural diagram of a concrete connection manner of the spliced chassis according to the fifth embodiment of the present invention;

fig. 22 is a schematic structural diagram of an extension bracket of a splicing type chassis according to a fifth embodiment of the present invention;

fig. 23 is a schematic structural diagram of a specific connection manner of the spliced chassis according to the fifth embodiment of the present invention;

fig. 24 is a schematic structural view of another extension bracket of the splicing type chassis according to the fifth embodiment of the present invention;

the reference numbers illustrate:

1. 1' a chassis module; 3. connecting a bracket; 301. a hook arm; 302. a hook body; 31. an upper hook portion; 311. a first upper hook part; 3111. a lower surface of the hook body of the first upper hook portion; 3112. an inner side surface of the hook body of the first upper hook portion; 312. a second upper hook part; 3121. a lower surface of the hook body of the second upper hook portion; 3122. the inner side surface of the hook body of the second upper hook part; 32. a lower hook portion; 321. a first lower hook portion; 3211. a hook body upper surface of the first lower hook portion; 3212. a hook body inner side surface of the first lower hook portion; 322. a second lower hook portion; 3221. a hook body upper surface of the second lower hook portion; 3222. a hook body inner side surface of the second lower hook portion; 33. a back plate; 5. 5', expanding the stent; 51. a fixed part; 52. a connecting portion; 53. reinforcing ribs; 54. a third connection hole; 55. a fourth connection hole; 6. a second positioning pin; 61. a side pin portion 61; 62. an intermediate connecting portion 62; 621. the upper surface of the intermediate connecting portion 62; 622. the lower surface of the intermediate connecting portion 62; 611. the inner side surface of the side pin portion 61; 63. the second connection hole 63; 7. a first positioning pin 7; 71. a head portion 71; 710. the side of the head 71; 72. a first connection hole 72; 8. a connecting member; 9. a holding section; s31, connecting the horizontal middle plane of the bracket; s32, connecting the vertical side of the bracket; s62, a horizontal middle plane of the second positioning pin; s71, the horizontal or vertical middle plane of the first locating pin 7; .

Detailed Description

The following description with reference to the accompanying drawings is provided to assist in a comprehensive understanding of various embodiments of the disclosure as defined by the claims and their equivalents. It includes various specific details to aid understanding, but they are to be considered merely illustrative. Accordingly, those of ordinary skill in the art will recognize that various changes or modifications of the various embodiments described herein can be made without departing from the scope and spirit of the present disclosure. In addition, descriptions of well-known functions and constructions are omitted for clarity and conciseness.

It should be understood that the singular forms "a", "an" and "the" include plural referents unless the context clearly dictates otherwise. Thus, for example, reference to "a component surface" also includes reference to one or more such surfaces.

As used herein, the terms "comprises" and/or "comprising" specify the presence of the disclosed functions, operations, or components, but do not preclude the presence or addition of one or more other functions, operations, or components. It will be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of stated features, integers, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, operations, elements, and/or components, and/or groups thereof.

As used herein, the term "and/or" includes any and all combinations of one or more of the preceding listed items. For example, "a or B" may include a, or include B, or include a and B.

As used herein, ordinal numbers such as "first," "second," etc., may modify various components of various embodiments without limiting such components. For example, these terms do not limit the order and/or importance of the components. These terms are only used to distinguish one element from another. For example, the first user equipment and the second user equipment are different user equipments from each other. For example, a first component may be indicated as a second component, and vice versa, without departing from the scope of the present disclosure.

When a component is "connected to" another component, the component can be directly connected or coupled to the other component or other component(s) can be interposed therebetween. In contrast, when one component is "directly connected" to another component, intervening components may not be interposed therebetween.

As shown in fig. 1 to 11, the first embodiment provides a connecting structure including two connecting brackets 3, a positioning pin, and a holding portion 9; the connecting bracket 3 comprises an upper hook part 31 and a lower hook part 32, wherein the upper hook part 31 and the lower hook part 32 respectively comprise a hook arm 301 and a hook body 302 connected with the hook arm 301; the upper hook part 31 is arranged above the lower hook part 32, and the upper hook part 31 and the hook body 302 of the lower hook part 32 are arranged oppositely; a gap is arranged between the hook bodies 302 of the upper hook part 31 and the lower hook part 32, and the gap forms a first insertion channel; a second insertion passage is formed between the hook arm 301 and the hook body 302 of the upper hook portion 31 and the hook arm 301 and the hook body 302 of the lower hook portion 32; the positioning pins are inserted into the first insertion channels and the second insertion channels of the two connecting brackets 3 to connect the two connecting brackets 3; the sectional areas of the first insertion channel and the second insertion channel are gradually reduced along the insertion direction of the positioning pin; the shape of the positioning pin is matched with the shapes of the first insertion channel and the second insertion channel; the holding portion 9 is provided on the opposite side of the attaching bracket 3 from the insertion side of the positioning pin, and is connected to the positioning pin to hold the positioning pin in the attaching bracket 3.

In the connection structure of the embodiment, a first insertion channel and a second insertion channel are formed by the connection bracket 3 in a manner that the positioning pin and the connection bracket 3 are fastened, the sectional areas of the first insertion channel and the second insertion channel are gradually reduced along the insertion direction of the positioning pin, and the positioning pin is arranged to be matched with the first insertion channel and the second insertion channel in shape; thus, as the positioning pins are inserted into the first insertion passage and the second insertion passage, the positioning pins press the two linking brackets 3, the two linking brackets 3 are moved in the approaching direction until the two linking brackets 3 are firmly linked together, and the positioning pins are held in the linking brackets 3 by the holding portions 9. The connection structure of this embodiment can bear the atress of different grade type such as drawing, pressing, bending, turning round, shearing of a plurality of degrees of freedom, and the installation is simple, only needs to push the locating pin, and it is fixed tight with the locating pin to keep the piece, can realize two linking bridge 3's alignment to guarantee coupling mechanism's reliable connection, it is very convenient to operate, receives processing defect's influence little, can not appear bolt, bolt hole because of the dislocation lead to connecting difficult problem.

Specifically, the structure of one attaching bracket 3 of the present embodiment is shown in fig. 2 to 7. The directions define directions as defined in fig. 2 and 3.

The upper hook portion 31 of each of the connecting brackets 3 includes a first upper hook portion 311 and a second upper hook portion 312, the first upper hook portion 311 and the second upper hook portion 312 being parallel with a space therebetween; the lower hook portion 32 of the connecting bracket 3 includes a first lower hook portion 321 and a second lower hook portion 322, and the first lower hook portion 321 and the second lower hook portion 322 are parallel to each other with a space therebetween. As shown in fig. 6 and 7, projections of the first upper hook sub-portion 311, the first lower hook sub-portion 321, the second upper hook sub-portion 312, and the second lower hook sub-portion 322 on a horizontal plane are sequentially arranged without overlapping each other.

The upper hook portion 31 is not limited to two upper hook portions, and may include three or more upper hook portions. The lower hook portion 32 is also not limited to including two lower hook portions, and may include three or more lower hook portions.

Alternatively, the upper hook portion 31 and the lower hook portion 32 of the attachment bracket 3 may be directly mounted on the member to be attached, or as shown in fig. 1, both the upper hook portion 31 and the lower hook portion 32 may be mounted on the back plate 33, and the back plate 33 may be attached to the member to be attached.

As shown in fig. 4 to 5, the hook lower surface 3111 of the first upper hook sub-portion 311 and the hook lower surface 3121 of the second upper hook sub-portion 312 are on a first inclined plane which is inclined downward in the insertion direction of the positioning pin, and which has a first inclination angle θ 1 with respect to the horizontal middle plane S31 of the connecting bracket 3. The hook body upper surface 3211 of the first lower hook portion 321 and the hook body upper surface 3221 of the second lower hook portion 322 are on a second inclined plane inclined downward in the insertion direction of the positioning pin, the second inclined plane having a second inclination angle θ 2 with respect to the horizontal middle plane S31 of the connecting bracket 3. Further, gaps are formed between the first upper hook portion 311, the second upper hook portion 312, the first lower hook portion 321, and the hook body 302 of the second lower hook portion 322, the distances of which become gradually narrower in the vertical direction in the insertion direction. The first inclination angle θ 1 and the second inclination angle θ 2 may be the same or different, and for the sake of processing convenience, the first inclination angle θ 1 and the second inclination angle θ 2 are preferably the same.

As shown in fig. 4 in conjunction with fig. 6 and 7, the hook inner surface 3112 of the first upper hook portion 311, the hook inner surface 3122 of the second upper hook portion 312, the hook inner surface 3212 of the first lower hook portion 321, and the hook inner surface 3222 of the second lower hook portion 322 are located on the same third inclined plane, and form a third inclination angle θ 3 with the vertical side surface S32 of the connecting bracket 3. In the insertion direction, the third inclined plane is inclined to the inner side. Further, as shown in fig. 4, an insertion space for accommodating the positioning pin is formed between the hook body 302 and the hook arm 301 of the upper and lower hook portions 31 and 32 in the insertion direction, gradually converging. The inner side as referred to above means the side close to the insertion space. The third inclination angle θ 3 may be the same as or different from, and preferably the same as, the first inclination angle θ 1 and the second inclination angle θ 2.

Fig. 8 to 11 show the structure of the positioning pin according to the first embodiment, the positioning pin includes a first positioning pin 7, the cross section of the first positioning pin 7 is cross-shaped, and the sectional area of the first positioning pin 7 is gradually reduced from the rear end to the front end. The front end herein means an end into which the first positioning pin 7 is inserted first when it is inserted into the connecting bracket 3. The first positioning pin 7 is provided with a first connecting hole 72 on its axis, preferably, the first connecting hole 72 is a threaded hole.

Specifically, the first positioning pin 7 includes four heads 71. Preferably, the pin is symmetrical about its axis, its four heads 71 being identical in shape and symmetrical about the axis. Processing and production of the first locating pin 7 of being convenient for like this, simultaneously, first locating pin 7 rotates 90 degrees homoenergetic wantonly around the axis when using and guarantees to insert smoothly in linking bridge 3, in linking bridge 3 can be inserted with four positions to first locating pin 7 promptly, and operating personnel need not judge whether correct the insertion gesture of locating pin for the operation is more convenient.

Preferably, the width of the head 71 of the positioning pin is tapered in the insertion direction. As shown in fig. 11, the first positioning pin 7 has a horizontal or vertical middle plane S71. As shown in fig. 10, in the case of the horizontal head 71, the upper/lower side surfaces of the horizontal head 71 form a fourth inclination angle θ 4 with the horizontal middle surface; in the case of the vertical head 71, the left/right side surfaces of the vertical head 71 are at a fourth inclination angle θ 4 with respect to the vertical middle surface. In the insertion direction, the side surfaces of the head portion 71 gradually come close to the corresponding middle surface, and the head portion 71 having a gradually reduced width is formed.

Alternatively, in the vertical head portion 71 of the first positioning pin 7, both the upper surface of the head portion 71 located above and the lower surface of the head portion 71 located below are horizontal surfaces. The left/right side surface of the horizontal head portion 71 of the first positioning pin 7 is a vertical plane. Thus, after the first positioning pin 7 is inserted into the first insertion channel and the second insertion channel, the main weight is borne by the horizontal plane of the vertical head 71, no inclined component force is generated, and the two connecting brackets 3 cannot slide relatively under the action of gravity, which is beneficial to ensuring the stable connection of the two connecting brackets 3.

The fourth inclination angle θ 4 is equal to the first inclination angle θ 1, the second inclination angle θ 2, and the third inclination angle θ 3 of the connecting bracket 3. Therefore, the first positioning pin 7 and the connecting bracket 3 can be conveniently machined, and the first positioning pin 7 can be smoothly inserted into the connecting bracket 3.

The specific structure of the connection structure according to the first embodiment will be described in detail with reference to fig. 1.

The two connecting brackets 3 respectively have two upper hook portions and two lower hook portions, and the upper hook portions of the two connecting brackets 3 can be engaged with each other in a staggered manner, and the lower hook portions of the two connecting brackets 3 can be engaged with each other in a staggered manner.

Further, second insertion passages are formed between the lower surfaces of the hook arms 301 of the upper hook portions 31 and the upper surfaces of the hook arms 301 of the lower hook portions 32 of the two connecting brackets 3, and between the inner side surfaces of the hook bodies 302 of the upper hook portions 31 and the inner side surfaces of the hook bodies 302 of the lower hook portions 32. The upper and lower head portions and the intermediate body portion of the first positioning pin 7 are inserted again and then positioned in the second insertion passage, and the upper surface and the lower surface of the upper head portion of the first positioning pin 7 can bear vertical tensile force, pressure force, vertical shearing force, bending force, torsion force and the like from the hook arm 301. The two side surfaces of the upper head part and the lower head part of the first positioning pin 7 extrude the inner side surfaces of the hook bodies 302 of the two connecting supports 3, and can bear transverse tension, pressure, shearing force, bending force and torsion, so that the two connecting supports 3 are aligned and mutually closed in the horizontal direction, and further the positioning and fixing of the two connecting supports 3 in the horizontal direction are realized.

A gap is provided between the upper hook portion 31 and the hook body 302 of the lower hook portion 32 of each attachment bracket 3, and the gap forms a first insertion passage. Thus, two first insertion passages are formed on both sides of the first aligning pin 7, respectively. After the two horizontal heads of the first positioning pin 7 are respectively inserted into the two first insertion channels, the lower surfaces of the hook bodies 302 of the upper hook parts and the upper surfaces of the hook bodies 302 of the lower hook parts of the two connecting supports 3 are extruded by the two side surfaces of the horizontal heads, so that the two connecting supports 3 are drawn together and aligned in the vertical direction, and the horizontal heads can bear the pressure, the shearing force, the bending force and the torsion force in the vertical direction from the hook bodies 302.

In addition, the holding portion 9 of the connection structure in this embodiment may be a plate-like structure, and is disposed on the opposite side of the connecting bracket 3 from the insertion side of the positioning pin, the first positioning pin 7 is provided with a first connecting hole 72 at the front end, the first connecting hole 72 is a screw hole, and the holding portion 9 may be connected to the first positioning pin 7 by a connecting member 8 such as a tension bolt or the like, so that the first positioning pin 7 and the holding portion 9 form a clamping mechanism to clamp the two connecting brackets 3 between the first positioning pin 7 and the holding portion 9, and by providing the holding portion 9, the first positioning pin 7 may be held in the connecting bracket 3 on the one hand, and the clamping force of the first positioning pin 7 may be adjusted by adjusting the tension bolt on the other hand.

The following describes a specific mode of use of the connection structure of the present embodiment. When two parts provided with the connecting supports 3 are required to be spliced, the two connecting supports 3 are firstly mutually occluded, then the first positioning pin 7 is inserted into the first insertion channel and the second insertion channel, the retaining part 9 is arranged on the opposite side of the connecting supports 3, and the retaining part 9 is in threaded connection with the first connecting hole 72 of the first positioning pin 7 through a tensioning bolt. The tightening bolts are continuously screwed, the first positioning pin 7 continuously penetrates into the first insertion channel and the second insertion channel, the inclined surface of the head 71 of the first positioning pin 7 continuously extrudes the inner side wall of the hook body 302 and the upper/lower surface of the hook body 302 of the two connecting brackets 3, and then the two connecting brackets 3 are simultaneously aligned and tensioned in the horizontal direction and the vertical direction, so that the two connecting brackets 3 are extruded with each other, or the parts connected with the two connecting brackets 3 extrude the retaining part 9. Under the combined action of the holding portion 9 and the tensioning bolt, the first positioning pin 7 continues to penetrate into the first insertion channel and the second insertion channel until the two components are firmly connected together.

The connecting structure of the first embodiment has an overall length equal to the length of the connecting bracket 3 after insertion, and the overall length is not adjustable, and is still not flexible enough for size expansion. Based on the above problems, the second embodiment provides a more flexible scheme for expanding the size.

Fig. 12 is a schematic diagram showing a connection structure of the second embodiment. In the connection structure of the second embodiment, the structure of the connection bracket 3 is the same as that of the connection bracket 3 of the first embodiment. The difference is that a second positioning pin 6 is used to connect the two connecting brackets 3.

Fig. 13 to 17 show the structure of the second positioning pin 6 of the second embodiment. The second positioning pin 6 comprises two side pin parts 61 and a middle connecting part 62, and two ends of the middle connecting part 62 are respectively connected with the side pin parts 61; wherein, in the insertion direction, the inner side surfaces of the two side pin portions 61 are inclined in the direction away from each other, and the upper surface and the lower surface of the intermediate connecting portion 62 are drawn together toward the middle.

Specifically, as shown in fig. 14 to 16, the intermediate connecting portion 62 of the second positioning pin 6 is also a cube having a trapezoidal cross section, the upper surface and the lower surface of which converge toward the middle in the insertion direction, the upper surface thereof being at a fifth inclination angle θ 5 with the horizontal median plane S62, and the lower surface thereof being at a sixth inclination angle θ 6 with the horizontal median plane S62.

The side pin portion 61 of the second positioning pin 6 has a trapezoidal cross-sectional cubic structure, and the inner side surfaces thereof are inclined in the direction away from each other, and the two inner side surfaces and the vertical middle surface S61 form a seventh inclination angle θ 7. The upper and lower surfaces of the side pin portion 61 are horizontal surfaces, and the outer side surface of the side pin portion 61 is a vertical surface. The two side pins 61 are respectively provided with a second connecting hole 63.

The fifth inclination angle theta 5 and the sixth inclination angle theta 6 are matched with the first inclination angle theta 1 and the second inclination angle theta 2 of the connecting bracket 3, and the seventh inclination angle theta 7 is matched with the third inclination angle theta 3 of the connecting bracket 3. Preferably, the fifth inclination angle θ 5, the sixth inclination angle θ 6 and the seventh inclination angle θ 7 are equal to the first inclination angle θ 1, the second inclination angle θ 2 and the third inclination angle θ 3 of the connecting bracket 3, so that the second positioning pin 6 and the connecting bracket 3 can be conveniently machined, and the second positioning pin 6 can be smoothly inserted into the connecting bracket 3. However, the fifth inclination angle θ 5, the sixth inclination angle θ 6, and the seventh inclination angle θ 7 may be partially the same or completely different.

Next, a specific mode of use of the connection structure of the second embodiment will be described. When it is necessary to splice two members provided with the connecting brackets 3, the two side pin portions 61 of the second positioning pin 6 are inserted into the second insertion passages of the two connecting brackets 3, respectively, and the intermediate connecting portion 62 is inserted into the first insertion passage. The holding portion 9 is provided on the opposite side of the attachment bracket 3, and the holding portion 9 is screwed to the second attachment hole 63 of the second positioning pin 6 by a tension bolt. The tensioning screw is continuously tightened, and the second positioning pin 6 continuously penetrates into the first insertion channel and the second insertion channel. The upper and lower surfaces of the intermediate connecting portion 62 of the second aligning pin 6 continuously press the upper/lower surfaces of the hook bodies 302 of the two connecting brackets 3, thereby aligning the two connecting brackets 3 in the vertical direction. The two inner side surfaces of the side pin parts 61 continuously press the inner side walls of the hook bodies 302 of the two connecting brackets 3 inwards, and the two connecting brackets 3 are tensioned inwards. Under the action of the second positioning pin 6, the two components gradually approach and press the holding part 9, and under the combined action of the inward pulling force of the second positioning pin 6 and the outward supporting force of the holding part 9, the two components, the second positioning pin 6 and the holding part 9 are firmly connected. Alternatively, the length of the holding portion 9 is adapted to the combined length of the connecting bracket 3 and the second positioning pin 6.

Like this, the connection structure of embodiment two, the accessible is adjusted intermediate junction portion 62 and the length of holding portion 9, and then adjusts connection structure's total length in a flexible way, can realize multiple length size's demand, satisfies the demand of different products, has greatly improved connection structure's use flexibility and expansibility.

Referring to fig. 18, the third embodiment provides a chassis assembly, including two chassis modules 1, the two chassis modules 1 including a first chassis module and a second chassis module, and further including the connection structure of the first embodiment, wherein the first chassis module and the second chassis module are respectively provided with a connection bracket 3 on opposite sides thereof, the connection bracket 3 of the first chassis module and the connection bracket 3 of the second chassis module jointly form a first insertion passage and a second insertion passage, a positioning pin is inserted into the first insertion passage and the second insertion passage from an insertion side of the brackets, and a holding portion 9 is connected to the positioning pin on a side of the connection bracket 3 opposite to the insertion side.

The chassis assembly of the third embodiment can realize rapid alignment and reliable connection between two chassis modules or more chassis modules, is convenient to operate and reliable in structure, and improves the rapid expansion performance of the chassis assembly in the transverse length direction.

The two chassis modules may be of the same or different sizes and in fig. 18 two different sizes of chassis modules are used, i.e. one normal size chassis module 1 and one shorter length chassis module 1', but are not limited thereto. The chassis module may be of rectangular frame-like construction or may take on other suitable configurations. The connecting bracket 3 is mounted on the side of the chassis module 1. At least one connecting bracket 3, preferably at least two connecting brackets 3, may be provided on one side of the chassis modules 1 and 1 'to ensure that the two chassis modules 1 and 1' are firmly connected.

Specifically, when the coupling structure in fig. 1 is adopted, the coupling bracket 3 of the first chassis module and the coupling bracket 3 on the second chassis module are oppositely disposed and are plug-connected to form a first insertion passage and a second insertion passage together, the first positioning pin 7 is inserted into the first insertion passage and the second insertion passage from the insertion side of the bracket, and the holding portion 9 is connected to the first positioning pin 7 by a tension bolt on the side of the coupling bracket 3 opposite to the insertion side. The two chassis modules 1 and 1' can be combined into one chassis assembly by tightening the tie bolts of the plurality of connecting structures.

Fig. 19 shows a chassis assembly according to a fourth embodiment, which is different from the chassis assembly according to the third embodiment in that the connection structure according to the second embodiment is used.

Specifically, the connecting supports 3 are respectively arranged on the opposite side surfaces of the first chassis module and the second chassis module, two side pin portions 61 of the second positioning pin 6 are respectively arranged in the first inserting channels of the connecting supports 3 of the two chassis modules 1 in a penetrating manner, the middle connecting portion 62 penetrates through the second inserting channels of the connecting supports 3 of the two chassis modules 1 and is connected with the two side pin portions 61, the retaining portion 9 is connected with the second positioning pin 6 on the side, opposite to the inserting side, of the connecting support 3, and the two sides of the retaining portion 9 are respectively abutted to the first chassis module and the second chassis module.

The holding portion 9 is screwed to the second coupling hole 63 of the second positioning pin 6 by a tension bolt. The tensioning screw is continuously tightened, and the second positioning pin 6 continuously penetrates into the first insertion channel and the second insertion channel. The upper and lower surfaces of the intermediate connecting portion 62 of the second aligning pin 6 continuously press the upper/lower surfaces of the hook bodies 302 of the two connecting brackets 3, thereby aligning the two connecting brackets 3 and the chassis module 1 in the vertical direction. The two inner side surfaces of the side pin parts 61 continuously press the inner side walls of the hook bodies 302 of the two connecting brackets 3 inwards to tighten the two chassis modules 1 inwards. Under the action of the second positioning pin 6, the two chassis modules 1 gradually approach and press the holding part 9, thereby firmly connecting the two chassis modules 1, the second positioning pin 6 and the holding part 9.

The chassis assembly of the fourth embodiment, the length of connecting portion 62 and holding portion 9 in the middle of the accessible adjustment, and then adjust the longitudinal total length of chassis assembly in a flexible way, on the basis of the size that need not to adjust the chassis module, can realize multiple length dimension's demand, satisfy the demand of different products, can reduce the size type of chassis module, reduce the part weight of chassis module, the degree of difficulty of having reduced stock has reduced manufacturing cost, the use flexibility and the extension performance of chassis assembly have greatly been improved.

Embodiment five provides a spliced chassis, as shown in fig. 20, comprising two chassis assemblies as described in embodiment three or embodiment four. The two chassis components are arranged side by side along the longitudinal direction; the spliced chassis further comprises an expansion bracket, the expansion bracket comprises two fixing parts 51 and a connecting part 52, and the connecting part 52 is fixedly connected with the two fixing parts 51; the two fixing parts 51 of the extension bracket are respectively connected with the adjacent connecting structures of the two chassis components, so that the two spliced chassis are connected together.

Specifically, the connecting structure of the two chassis assemblies is located between the two fixing portions 51, so that the two fixing portions 51 limit the connecting structure of the two chassis assemblies in the middle, the two chassis assemblies can be effectively prevented from being separated, and the reliability of connection is improved.

Preferably, the fixing portion 51 is further provided with a rib 53 to improve the structural strength of the fixing portion 51. The reinforcing ribs 53 may be provided in one or more rows.

The specific way of connecting the two fixing parts 51 of the expansion bracket with the adjacent connecting structures of the two chassis assemblies respectively can be that the two fixing parts 51 are connected with the upper hook part and the lower hook part of the connecting structures respectively, or connected with the retaining part 9 of the connecting structures. In addition, in another alternative, the two fixing portions 51 can be respectively used as holding portions of the connecting structure of the two chassis assemblies, and are directly connected with the positioning pins through the tension bolts, so that the holding portions can be omitted, the weight can be reduced, and the space can be saved.

Fig. 21 and 22 show the structure of the extension bracket of the chassis assembly according to the third embodiment, and it can be seen that each fixing portion 51 on the extension bracket is provided with a third connecting hole 54, the third connecting hole 54 is used to connect the first connecting holes 72 of the first positioning pins 7 of the adjacent connecting structures of two chassis assemblies, for example, by bolts, and the length of the fixing portion 51 is substantially equal to the length of the two connecting brackets 3 after being plugged.

Preferably, each fixing portion 51 may further include a fourth connecting hole 55, and the fixing portion 51 and the connecting bracket 3 may be fixedly connected through the fourth connecting hole 55, and the connecting manner may adopt a bolt, a pin connection, and the like, so as to further ensure the firmness and reliability of the connection.

Fig. 23 and 24 show the structure of the extension bracket to which the chassis assembly of the fourth embodiment is attached, and it can be seen that two third attachment holes 54 are provided on each of the fixing portions 51 of the extension bracket. In this way, each fixing portion 51 is connected to the two second connecting holes 63 of the second positioning pin 6 of one connecting structure through the two third connecting holes 54, for example, by bolts, thereby connecting the extension bracket to the connecting structure of two chassis assemblies.

Preferably, each fixing portion 51 may further include a fourth connecting hole 55, and the fixing portion 51 and the connecting bracket 3 may be fixedly connected through the fourth connecting hole 55, and the connecting manner may adopt a bolt, a pin, a rivet connection, or the like, so as to further ensure the firmness and reliability of the connection.

Through setting up the extension support, the extension of horizontal length has been realized on the concatenation formula chassis, combines the scalability of the longitudinal width of chassis subassembly, and the concatenation formula chassis can realize the combination of multiple horizontal length and longitudinal width on guaranteeing that the basic dimension of chassis module maintains one or more (less, for example two kinds or three kinds), very big reduction the quantity and the manufacturing cost of spare parts, improved the flexibility of production.

The sixth embodiment provides furniture using the chassis assembly of the third embodiment, the fourth embodiment and/or the spliced chassis of the fifth embodiment. The furniture of this embodiment when realizing the nimble change of furniture size, has reduced the part quantity on chassis by a wide margin, through different chassis modules and connection structure of collocation, can satisfy not unidimensional demand, very big reduction the quantity and the manufacturing cost of spare part, improved the flexibility of production.

The above embodiments are only examples of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily think of the changes or substitutions within the technical scope of the present invention, and all should be covered by the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims (13)

1. A connecting structure is characterized by comprising two connecting brackets, a positioning pin and a holding part; the connecting bracket comprises an upper hook part and a lower hook part, and the upper hook part and the lower hook part respectively comprise a hook arm and a hook body connected with the hook arm; the upper hook part is arranged above the lower hook part, and the hook bodies of the upper hook part and the lower hook part are arranged oppositely; a gap is arranged between the hook bodies of the upper hook part and the lower hook part, and the gap forms a first insertion channel; a second insertion channel is formed between the hook arm and the hook body of the upper hook part and between the hook arm and the hook body of the lower hook part;

the positioning pins are inserted into the first insertion channels and the second insertion channels of the two connecting brackets to connect the two connecting brackets;

the sectional areas of the first insertion channel and the second insertion channel are gradually reduced along the insertion direction of the positioning pin;

the shape of the positioning pin is matched with the shape of the first insertion channel and the second insertion channel;

the holding portion is provided on the opposite side of the attaching bracket from the insertion side of the positioning pin, and is connected to the positioning pin to hold the positioning pin in the attaching bracket.

2. The connecting structure according to claim 1, wherein the upper hook portion includes a first upper hook sub-portion and a second upper hook sub-portion, the first upper hook sub-portion and the second upper hook sub-portion being parallel with a space provided therebetween;

the lower hook part comprises a first lower hook part and a second lower hook part, and the first lower hook part and the second lower hook part are parallel and provided with a space therebetween;

the projections of the first upper hook sub-part, the first lower hook sub-part, the second upper hook sub-part and the second lower hook sub-part on a horizontal plane are sequentially arranged and do not overlap with each other;

the two connecting brackets are oppositely arranged.

3. The connection structure according to claim 2,

the upper hook parts of the two connecting brackets are arranged in a staggered manner, the lower hook parts of the two connecting brackets are also arranged in a staggered manner, and the two connecting brackets are connected in an inserted manner;

the locating pin includes first locating pin, the cross-section of first locating pin is the cross, by rear end to front end, the sectional area of first locating pin reduces gradually.

4. The connecting structure according to claim 3, wherein the first positioning pin includes four heads, the width of the heads gradually becomes smaller in the insertion direction; and/or

The locating pin is symmetrical relative to the axis center.

5. The connecting structure according to claim 2, wherein the positioning pin comprises a second positioning pin comprising two side pin portions and an intermediate connecting portion, both ends of which are connected to the side pin portions, respectively; wherein,

in the insertion direction, the inner side surfaces of the two side pin portions are inclined in a direction away from each other, and the upper surface and the lower surface of the intermediate connecting portion are drawn toward the middle.

6. A chassis assembly comprising a first chassis module and a second chassis module, characterized by further comprising a connection structure according to claim 1 or 2, wherein,

the first chassis module and the second chassis module are provided with connecting brackets on opposite sides thereof, the connecting bracket of the first chassis module and the connecting bracket of the second chassis module together form the first insertion passage and the second insertion passage, the positioning pin is inserted into the first insertion passage and the second insertion passage from an insertion side of the connecting bracket, and the holding portion is coupled to the positioning pin on a side of the connecting bracket opposite to the insertion side.

7. A chassis assembly comprising a first chassis module and a second chassis module, characterized by further comprising a connection structure according to claim 3 or 4, wherein,

the first chassis module and the second chassis module are provided with connecting brackets on opposite side surfaces thereof, the connecting bracket of the first chassis module and the connecting bracket of the second chassis module are connected in an inserting manner to form the first inserting channel and the second inserting channel together, the first positioning pin is inserted into the first inserting channel and the second inserting channel from the inserting side of the connecting bracket, and the holding part is connected with the first positioning pin on the side opposite to the inserting side of the connecting bracket.

8. A floor assembly comprising a first floor module and a second floor module, further comprising the attachment structure of claim 5, wherein,

the side surfaces of the first chassis module and the second chassis module, which are opposite to each other, are respectively provided with a connecting support, two side pin parts of the second positioning pin are respectively arranged in the first inserting channels of the connecting supports of the two chassis modules in a penetrating manner, the middle connecting part penetrates through the second inserting channels of the connecting supports of the two chassis modules and is connected with the two side pin parts, the holding part is connected with the second positioning pin on the side, which is opposite to the inserting side, of the connecting support, and the two sides of the holding part are respectively abutted against the first chassis module and the second chassis module.

9. The floor assembly according to any of claims 6-8, wherein said retaining portion is further fixedly connected to said attachment bracket.

10. A splice tray comprising two tray assemblies according to any one of claims 6 to 9 arranged side by side;

the spliced chassis further comprises an expansion bracket, the expansion bracket comprises two fixing parts and a connecting part, and the connecting part is fixedly connected with the two fixing parts;

two of the fixed parts of the extension bracket are respectively connected with adjacent connecting structures of two chassis assemblies, so that the two spliced chassis are connected together.

11. The splice tray of claim 10 wherein the connecting structure of two tray assemblies is located between two of the securing portions.

12. The splice tray of claim 10 wherein the securing portion is connected to a retaining portion of an adjacent connecting structure of the two tray assemblies; or

The fixing part is used as a holding part of the connecting structure of the chassis assembly and is connected with the positioning pin of the connecting structure of the chassis assembly.

13. Furniture, characterized in that a chassis assembly according to any of claims 6-8 or a splice chassis according to any of claims 10-12 is used.