CN116336052A

CN116336052A - Connection structure, chassis assembly, concatenation formula chassis and furniture

Info

Publication number: CN116336052A
Application number: CN202310317736.0A
Authority: CN
Inventors: 丁宁; 马佳弘; 马雷
Original assignee: Beijing Bigejia Technology Co ltd
Current assignee: Beijing Bigejia Technology Co ltd
Priority date: 2017-09-22
Filing date: 2017-09-22
Publication date: 2023-06-27
Also published as: CN107524675B; CN107524675A

Abstract

The invention provides a connecting structure, a chassis assembly, a spliced chassis and furniture. The connecting structure comprises two connecting brackets, a locating pin and a holding part; the connecting bracket comprises an upper hook part and a lower hook part, wherein the upper hook part and the lower hook part 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 oppositely arranged; 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 pin is inserted into a first insertion channel and a second insertion channel of the two connecting brackets, and the two connecting brackets are connected; the holding portion is provided on a side of the connection bracket opposite to the insertion side of the positioning pin, and is connected to the positioning pin to hold the positioning pin in the connection bracket. The connecting structure can realize quick and easy alignment and connection, and has simple operation and high efficiency.

Description

Connection structure, chassis assembly, concatenation formula chassis and furniture

Description of the division

The original foundation of the divisional application is the patent application with the application number of 201710867461.2, the application date of 2017, 09 and 22, and the invention is named as 'connection structure, chassis assembly, spliced chassis and furniture'.

Technical Field

The invention relates to the field of furniture and home decoration, in particular to a connecting structure, a chassis assembly, a spliced chassis and furniture.

Background

Along with the development of society and the improvement of the living standard of people, the requirements of people on furniture and home decoration are also higher and higher. The type of furniture is also continually renovated. Furniture types have grown into movable furniture, electromotive furniture, and transformable furniture. Moreover, the furniture in each household has specific requirements on the size specification, and particularly the size requirement of the furniture is quite large.

At present, chassis components in movable furniture, electric furniture and deformed furniture in domestic markets are designed, processed and manufactured according to the demands of customer orders, and if orders with different specifications and different sizes exist, factories are required to carry out personalized custom-made production. In order to meet the requirements of chassis universal parts of different sizes and reduce production and stock costs, many manufacturers have proposed a modular concept, namely, two or more chassis modules are connected by splicing to achieve different sizes. The existing splicing connection mode is achieved by means of bolt connection, two chassis modules are connected together through a plurality of bolts, the bolts are required to be operated during assembly and disassembly, efficiency is low, and when the machining precision of the connection position of the chassis modules is low or the installation ground is uneven, and the like, when the bolts cannot be accurately abutted with the bolt interfaces, connection operation is more difficult.

Disclosure of Invention

The embodiment of the invention provides a connecting structure, a chassis assembly, a spliced chassis and furniture, which are used for solving the problems of low installation efficiency and difficult operation of the traditional spliced chassis.

In order to achieve the above object, an aspect of an embodiment of the present invention provides a connection structure, including two connection brackets and a positioning pin, wherein the connection brackets include an upper hook portion and a lower hook portion, the upper hook portion includes a first upper hook portion and a second upper hook portion, and the first upper hook portion and the second upper hook portion are parallel and have 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 are provided with a space therebetween; the lower surface of the hook body of the first upper hook part and the lower surface of the hook body of the second upper hook part are on a first inclined plane, the first inclined plane is inclined downwards along the inserting direction of the positioning pin, and the first inclined plane has a first inclined angle theta 1 relative to the horizontal middle plane of the connecting bracket; the upper surface of the hook body of the first lower hook part and the upper surface of the hook body of the second lower hook part are on a second inclined plane, and the second inclined plane is inclined upwards along the inserting direction of the locating pin, and the second inclined plane has a second inclined angle theta 2 relative to the horizontal middle plane of the connecting bracket; the first tilt angle θ1 and the second tilt angle θ2 are equal.

Optionally, the hook inner side surface of the first upper hook portion, the hook inner side surface of the second upper hook portion, the hook inner side surface of the first lower hook portion, and the hook inner side surface of the second lower hook portion are located on the same third inclined plane, and a third inclined angle θ3 is formed between the hook inner side surface of the first upper hook portion, the hook inner side surface of the second upper hook portion, and the vertical side surface of the connecting bracket.

Optionally, the positioning pin comprises a first positioning pin, the cross section of the first positioning pin is cross-shaped, and the cross section of the first positioning pin gradually decreases from the rear end to the front end.

Optionally, the first positioning pin includes four heads, the width of which gradually becomes smaller along the insertion direction; and/or the locating pin is centrally symmetrical about its axis.

Optionally, the first positioning pin has a horizontal and vertical middle surface, and the upper/lower side surface of the horizontal head forms a fourth inclination angle theta 4 with the horizontal middle surface; the left/right side surface of the vertical head forms a fourth inclination angle theta 4 with the vertical center surface, and the fourth inclination angle theta 4 is equal to the third inclination angle theta 3.

Optionally, the upper hook is disposed above the lower hook, and the hook bodies of the upper hook and the lower hook are disposed opposite to each other; 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.

Optionally, the positioning pin is inserted into the first insertion channel and the second insertion channel of the two connecting brackets to connect the two connecting brackets.

Alternatively, the cross-sectional areas of the first insertion passage and the second insertion passage are each gradually reduced in the insertion direction of the positioning pin.

Optionally, the connecting structure of the present invention further includes a holding portion provided on a side of the connecting bracket opposite to the insertion side of the positioning pin and connected to the positioning pin, holding the positioning pin in the connecting bracket.

A second aspect of the embodiment of the present invention provides a chassis assembly, which includes a first chassis module and a second chassis module, and further includes the foregoing connection structure, where opposite sides of the first chassis module and the second chassis module are respectively provided with a connection bracket, the connection brackets of the first chassis module and the connection brackets of the second chassis module are connected in an inserting manner, so as to form a first insertion channel and a second insertion channel together, a first positioning pin is inserted into the first insertion channel and the second insertion channel from an insertion side of the connection bracket, and a holding portion is connected with the first positioning pin on a side opposite to the insertion side of the connection bracket.

Optionally, in the aforementioned chassis assembly, the holding portion is further fixedly connected to the connection bracket.

A third aspect of the embodiments of the present invention provides a spliced chassis, including two chassis assemblies as described above, the two chassis assemblies being arranged side by side; the spliced chassis further comprises an expansion bracket, wherein the expansion bracket comprises two fixing parts and a connecting part, and the connecting part is fixedly connected with the two fixing parts; two fixing parts of the expansion bracket are respectively connected with adjacent connecting structures of two chassis components, so that the two spliced chassis are connected together.

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

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

A fourth aspect of the present invention provides a piece of furniture, using the aforementioned chassis assembly, or the aforementioned splice chassis.

According to the connecting structure provided by the embodiment of the invention, the first insertion channel and the second insertion channel are formed through the connecting support in a mode of the positioning pin and the connecting support, 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 shapes of the first insertion channel and the second insertion channel; 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, causing the two connecting brackets to move in the closing 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 the embodiment can bear different types of stress such as pulling, pressing, bending, twisting, shearing and the like with a plurality of degrees of freedom, is simple to install, can realize reliable connection of the connection mechanism by only pushing the locating pin in and fixing the retainer and the locating pin tightly, is very convenient to operate, is little affected by processing defects, and can not cause the problem of difficult connection of bolts and bolt holes due to dislocation.

The chassis assembly provided by the embodiment of the invention can realize the connection between the chassis with the same or different sizes, and meets the requirements of the chassis with different sizes.

The spliced chassis provided by the embodiment of the invention can further splice different chassis components into a larger spliced chassis, thereby meeting the requirements of furniture with larger size.

According to the furniture provided by the embodiment of the invention, the chassis assembly or the spliced chassis is adopted, so that the specification number of chassis parts is reduced under the condition of meeting various demands of customers, the weight of a single chassis part is reduced as much as possible, the cost of stock and production can be effectively reduced, and the efficiency of stock and production is improved.

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 connection bracket of a connection 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 front view schematically illustrating a connection bracket according to a first embodiment of the present invention;

FIG. 6 is a top view of a connecting bracket according to 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 invention;

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

FIG. 9 is a schematic front view of a first positioning pin according to a first embodiment of the present invention;

FIG. 10 is a schematic rear view of 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 diagram of a connection structure according to a second embodiment of the present invention;

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

FIG. 14 is a schematic rear view of a second positioning pin according to a second embodiment of the present invention;

FIG. 15 is a schematic cross-sectional view of A-A side of a second dowel according to a second embodiment of the present invention;

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

FIG. 17 is another perspective view of a second detent of the second embodiment of the present invention;

FIG. 18 is a schematic block diagram of a chassis assembly of a third embodiment of the present invention;

FIG. 19 is a schematic block diagram of a chassis assembly according to a fourth embodiment of the present invention;

FIG. 20 is a schematic block diagram of a splice chassis according to a fifth embodiment of the present invention;

FIG. 21 is a schematic block diagram of a specific connection mode of a spliced chassis according to a fifth embodiment of the present invention;

FIG. 22 is a schematic structural diagram of an expansion bracket of a splice-type chassis according to a fifth embodiment of the present invention;

FIG. 23 is a schematic block diagram of another specific connection mode of a splice-type chassis according to a fifth embodiment of the present invention;

FIG. 24 is a schematic structural view of another expansion bracket of a splice-type chassis of a fifth embodiment of the present invention;

reference numerals illustrate:

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

Detailed Description

The following description with reference to the accompanying drawings is provided to assist in a comprehensive understanding of the various embodiments of the disclosure defined by the claims and their equivalents. It includes various specific details to aid in understanding, but they should be considered merely illustrative. Accordingly, one 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 forms unless the context clearly indicates otherwise. Thus, for example, reference to "a component surface" also includes reference to one or more such surfaces.

The terms "comprises," "comprising," and/or "including," when used herein, specify the presence of stated features, operations, or components, but do not preclude the presence or addition of one or more other features, 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 foregoing. For example, "a or B" may include a, or include B, or include a and B.

Ordinal numbers such as "first," "second," and the like, as used herein, may modify various components of various embodiments without limiting the 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 element. For example, the first user equipment and the second user equipment are user equipment different from each other. For example, a first component could be termed a second component, and vice versa, without departing from the scope of the present disclosure.

When one component is "connected to" another component, the component may be directly connected or coupled to the other component, or other component(s) may 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 comprise a hook arm 301 and a hook body 302 connected with the hook arm 301; the upper hook 31 is arranged above the lower hook 32, and the upper hook 31 and the hook body 302 of the lower hook 32 are arranged opposite to each other; 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 pin is inserted into a first insertion channel and a second insertion channel 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 shape of the first insertion channel and the second insertion channel; the holding portion 9 is provided on the opposite side of the connection bracket 3 from the positioning pin insertion side, and is connected to the positioning pin to hold the positioning pin in the connection bracket 3.

In the connecting structure of the embodiment, a first insertion channel and a second insertion channel are formed through the connecting bracket 3 in a manner of fastening the positioning pin and the connecting bracket 3, and the cross sections 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 shapes of the first insertion channel and the second insertion channel; thus, as the positioning pin is inserted into the first insertion passage and the second insertion passage, the positioning pin presses the two connection brackets 3, causing the two connection brackets 3 to move in the closing direction until the two connection brackets 3 are firmly connected together, and the positioning pin is held in the connection brackets 3 by the holding portion 9. The connecting structure of the embodiment can bear different types of stress such as pulling, pressing, bending, twisting, shearing and the like with a plurality of degrees of freedom, is simple to install, only needs to push in the locating pin, fixes the retainer and the locating pin tightly, can realize the alignment of the two connecting brackets 3, ensures the reliable connection of the connecting mechanism, is very convenient to operate, is little influenced by processing defects, and can not cause the problem of difficult connection of bolts and bolt holes due to dislocation.

Specifically, the structure of one connection bracket 3 of the present embodiment is shown in fig. 2 to 7. The direction definition is as defined in fig. 2 and 3.

The upper hook portion 31 of each connecting bracket 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 connection 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 with a space therebetween. As shown in fig. 6 and 7, projections of the first upper hook portion 311, the first lower hook portion 321, the second upper hook portion 312, and the second lower hook portion 322 on a horizontal plane are sequentially arranged without overlapping each other.

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

Alternatively, the upper hook 31 and the lower hook 32 of the connection bracket 3 may be directly mounted on the member to be connected, or as shown in fig. 1, the upper hook 31 and the lower hook 32 may be mounted on the back plate 33, and then the back plate 33 is connected with the member to be connected.

As shown in fig. 4 to 5, the hook lower surface 3111 of the first upper hook portion 311 and the hook lower surface 3121 of the second upper hook 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 θ1 with respect to the horizontal middle plane S31 of the connection 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 inclined downward in the insertion direction of the positioning pin on a second inclined plane having a second inclination angle θ2 with respect to the horizontal middle plane S31 of the connection bracket 3. Further, a gap, in which the vertical distance in the insertion direction gradually becomes narrower, is formed between the hook bodies 302 of the first upper hook portion 311, the second upper hook portion 312, the first lower hook portion 321, and the second lower hook portion 322. The first inclination angle θ1 and the second inclination angle θ2 may be the same or different, and for convenience of processing, it is preferable that the first inclination angle θ1 and the second inclination angle θ2 be the same.

As shown in fig. 4 in combination with fig. 6 and 7, the hook inner side surface 3112 of the first upper hook portion 311, the hook inner side surface 3122 of the second upper hook portion 312, the hook inner side surface 3212 of the first lower hook portion 321, and the hook inner side surface 3222 of the second lower hook portion 322 are positioned on the same third inclined plane, and form a third inclined angle θ3 with the vertical side surface S32 of the connection bracket 3. The third inclined plane is inclined inward in the insertion direction. Further, as shown in fig. 4, an insertion space for accommodating the positioning pin is formed gradually in the insertion direction between the hook body 302 and the hook arm 301 of the upper hook portion 31 and the lower hook portion 32. The inner side mentioned above means the side close to the insertion space. The third inclination angle θ3 may be the same or different, preferably the same, as the first inclination angle θ1 and the second inclination angle θ2.

Fig. 8 to 11 show the structure of the positioning pin of 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 cross section of the first positioning pin 7 gradually decreases from the rear end to the front end. The front end refers to the end into which the first positioning pin 7 is inserted first when the connecting bracket 3 is inserted. The axis of the first positioning pin 7 is provided with a first connecting hole 72, and preferably the first connecting hole 72 is a threaded hole.

Specifically, the first positioning pin 7 includes four heads 71. Preferably, the dowel pin is centrally symmetrical about its axis, with its four heads 71 being identical in shape and centrally symmetrical about the axis. Thus, the processing and the production of the first locating pin 7 are convenient, meanwhile, the first locating pin 7 can be randomly rotated by 90 degrees around the axis during use to ensure smooth insertion into the connecting support 3, namely, the first locating pin 7 can be inserted into the connecting support 3 in four directions, and an operator does not need to judge whether the insertion posture of the locating pin is correct or not, so that the operation is more convenient.

Preferably, the width of the head portion 71 of the positioning pin is gradually reduced in the insertion direction. As shown in fig. 11, the first positioning pin 7 has a horizontal or vertical middle surface S71. As shown in fig. 10, in the case of the horizontal head portion 71, the upper/lower side surface of the horizontal head portion 71 forms a fourth inclination angle θ4 with the horizontal center surface; in the case of the vertical head 71, the left/right sides of the vertical head 71 are at a fourth inclination angle θ4 with respect to the vertical center. The side surfaces of the head portion 71 gradually approach the corresponding intermediate surfaces in the insertion direction, and the head portion 71 having a gradually smaller 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 planes. The left/right side surfaces of the horizontal head portion 71 of the first positioning pin 7 are vertical planes. Thus, when 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 oblique component force is generated, and the two connecting brackets 3 are not caused to slide relatively under the action of gravity, so that the stable connection of the two connecting brackets 3 is ensured.

The fourth inclination angle θ4 is equal to the first inclination angle θ1, the second inclination angle θ2, and the third inclination angle θ3 of the connection bracket 3. This facilitates the processing of the first positioning pin 7 and the connecting bracket 3 and also ensures that the first positioning pin 7 can be smoothly inserted into the connecting bracket 3.

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

The two connecting brackets 3 are respectively provided with two upper hook parts and two lower hook parts, the upper hook parts and the upper hook parts of the two connecting brackets 3 can be mutually staggered and meshed, and the lower hook parts of the two connecting brackets 3 can be mutually staggered and meshed.

Further, second insertion passages are formed between the lower surfaces of the hook arms 301 of the upper hooks 31 and the upper surfaces of the hook arms 301 of the lower hooks 32 of the two connection brackets 3, and between the inner side surfaces of the hook bodies 302 of the upper hooks 31 and the inner side surfaces of the hook bodies 302 of the lower hooks 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 and lower surfaces of the upper and lower head portions of the first positioning pin 7 can receive vertical tensile force, compressive force, vertical shearing force, bending force, torsion force, etc. from the hook arm 301. The two sides of the upper head and the lower head of the first positioning pin 7 squeeze the inner sides of the hook bodies 302 of the two connecting brackets 3, so that transverse tensile force, pressure force, shearing force, bending force and torsion can be born, the two connecting brackets 3 are aligned and mutually close in the horizontal direction, and the positioning and fixing of the two connecting brackets 3 in the horizontal direction are further realized.

A gap is provided between the hook body 302 of the upper hook 31 and the lower hook 32 of each connection bracket 3, and the gap forms a first insertion passage. Two first insertion passages are thus formed on both sides of the first positioning pin 7, respectively. After the two horizontal heads of the first positioning pins 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 brackets 3 are extruded through the two side surfaces of the horizontal heads, so that the two connecting brackets 3 are closed and aligned in the vertical direction, and the horizontal heads can bear the pressure, the shearing force, the bending force and the torsion force from the vertical direction of the hook bodies 302.

Further, the holding portion 9 of the connecting structure in the present embodiment may be a plate-like structure provided on the side of the connecting bracket 3 opposite to 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, the holding portion 9 may be connected to the first positioning pin 7 by a connecting member 8 such as a tie bolt or the like, so that the first positioning pin 7 and the holding portion 9 form a clamping mechanism, clamping 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 on the other hand, the clamping force of the first positioning pin 7 may be adjusted by adjusting the tie bolt.

The following describes a specific use mode of the connection structure of the present embodiment. When two parts respectively provided with the connecting brackets 3 are required to be spliced, the two connecting brackets 3 are meshed with each other, 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 brackets 3, and the retaining part 9 is in threaded connection with the first connecting hole 72 of the first positioning pin 7 through a tension bolt. Tightening bolts are continuously tightened, the first positioning pin 7 is continuously inserted into the first insertion passage and the second insertion passage, and the inclined surfaces of the head portions 71 of the first positioning pin 7 continuously press the inner side walls of the hook bodies 302 and the upper/lower surfaces of the hook bodies 302 of the two connection brackets 3, thereby simultaneously aligning and tightening the two connection brackets 3 in the horizontal direction and the vertical direction, pressing the two connection brackets 3 against each other, or pressing the members connecting the two connection brackets 3 against the holding portions 9. Under the combined action of the holding part 9 and the tensioning screw, the first positioning pin 7 continues to penetrate into the first insertion channel and the second insertion channel until the two parts are firmly connected together.

The total length of the connecting structure of the first embodiment is equal to the length of the connecting bracket 3 after being inserted, the total length is not adjustable, and the size expansion is still not flexible enough. Based on the above problems, the second embodiment proposes a more flexible solution for expanding the size.

Fig. 12 shows a schematic diagram of 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 locating 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 an intermediate connecting part 62, and two ends of the intermediate connecting part 62 are respectively connected with the side pin parts 61; in the insertion direction, the inner sides of the two side pin portions 61 are inclined away from each other, and the upper and lower surfaces of the intermediate connecting portion 62 are drawn 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 and lower surfaces of which are drawn toward the middle in the insertion direction, the upper surface of which makes a fifth inclination angle θ5 with the horizontal intermediate surface S62, and the lower surface of which makes a sixth inclination angle θ6 with the horizontal intermediate surface S62.

The side pin portion 61 of the second positioning pin 6 has a trapezoidal cubic structure in cross section, and inner side surfaces thereof are inclined in directions away from each other, and both inner side surfaces form a seventh inclination angle θ7 with the vertical middle surface S61. 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 pin portions 61 are respectively provided with second connection holes 63.

The fifth inclination angle θ5 and the sixth inclination angle θ6 are matched with the first inclination angle θ1 and the second inclination angle θ2 of the connecting bracket 3, and the seventh inclination angle θ7 is matched with the third inclination angle θ3 of the connecting bracket 3. Preferably, the fifth inclination angle θ5, the sixth inclination angle θ6 and the seventh inclination angle θ7 are equal to the first inclination angle θ1, the second inclination angle θ2 and the third inclination angle θ3 of the connecting bracket 3, so that the second positioning pin 6 and the connecting bracket 3 are convenient to process, and the second positioning pin 6 can be smoothly inserted into the connecting bracket 3. However, the present invention is not limited thereto, and the fifth tilt angle θ5, the sixth tilt angle θ6, and the seventh tilt angle θ7 may be partially the same or completely different.

The following describes a specific use manner of the connection structure of the second embodiment. When it is necessary to splice two members each provided with the connection bracket 3, the two side pin portions 61 of the second positioning pin 6 are respectively inserted into the second insertion passages of the two connection brackets 3, and the intermediate connection portion 62 is inserted into the first insertion passage. The holding portion 9 is provided on the opposite side of the connection bracket 3, and the holding portion 9 is screwed to the second connection hole 63 of the second positioning pin 6 by a tension bolt. The tightening bolts are continuously tightened, and the second positioning pins 6 are continuously inserted into the first insertion passages and the second insertion passages. The upper and lower surfaces of the intermediate connection portion 62 of the second positioning pin 6 continuously press the upper/lower surfaces of the hooks 302 of the two connection brackets 3, thereby aligning the two connection brackets 3 in the vertical direction. The two inner side surfaces of the side pin portion 61 continuously press the inner side walls of the hooks 302 of the two connecting brackets 3 inward, tightening the two connecting brackets 3 inward. Under the action of the second positioning pin 6, the two members gradually approach and press against the holding portion 9, and the two members, the second positioning pin 6 and the holding portion 9 are firmly connected under the combined action of the inward pulling force of the second positioning pin 6 and the outward supporting force of the holding portion 9. Optionally, the length of the holding portion 9 is adapted to the combined length of the connecting bracket 3 and the second positioning pin 6.

Thus, in the connection structure of the second embodiment, the lengths of the intermediate connection portion 62 and the holding portion 9 can be adjusted, so that the total length of the connection structure can be flexibly adjusted, the requirements of various length dimensions can be met, the requirements of different products can be met, and the use flexibility and the expansion performance of the connection structure can be greatly improved.

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

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

The two chassis modules may be the same or different in size, and two chassis modules of different sizes, i.e., one normal-sized chassis module 1 and one shorter-length chassis module 1', are used in fig. 18, but not limited thereto. The chassis module may be a rectangular frame-like structure or take other suitable configurations. The connection 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 connection structure in fig. 1 is adopted, the connection bracket 3 of the first chassis module and the connection bracket 3 on the second chassis module are oppositely disposed and are plug-connected, together forming a first insertion passage and a second insertion passage, 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 with the first positioning pin 7 by a tension bolt on the side opposite to the insertion side of the connection bracket 3. Tightening the tie bolts of the plurality of connection structures makes it possible to combine the two chassis modules 1 and 1' into one chassis assembly.

Fig. 19 shows a chassis assembly of the fourth embodiment, which differs from the chassis assembly of the third embodiment in that the connection structure of the second embodiment is employed.

Specifically, the connection brackets 3 are respectively provided on opposite sides of the first chassis module and the second chassis module, two side pin portions 61 of the second positioning pin 6 are respectively inserted into first insertion passages of the connection brackets 3 of the two chassis modules 1, an intermediate connection portion 62 passes through second insertion passages of the connection brackets 3 of the two chassis modules 1 and connects the two side pin portions 61, the holding portion 9 is connected with the second positioning pin 6 on a side opposite to the insertion side of the connection brackets 3, and both sides of the holding portion 9 are respectively abutted against the first chassis module and the second chassis module.

The holding portion 9 is screwed with the second connection hole 63 of the second positioning pin 6 by a tension bolt. The tightening bolts are continuously tightened, and the second positioning pins 6 are continuously inserted into the first insertion passages and the second insertion passages. The upper and lower surfaces of the intermediate connection portion 62 of the second positioning pin 6 continuously press the upper/lower surfaces of the hooks 302 of the two connection brackets 3, thereby aligning the two connection brackets 3 and the chassis module 1 in the vertical direction. The two inner side surfaces of the side pin portion 61 continuously press the inner side walls of the hooks 302 of the two connecting brackets 3 inward to tighten the two chassis modules 1 inward. Under the action of the second positioning pins 6, the two chassis modules 1 gradually approach and press against the holding portion 9, and the two chassis modules 1, the second positioning pins 6 and the holding portion 9 are firmly connected.

The chassis assembly of the fourth embodiment can flexibly adjust the longitudinal total length of the chassis assembly by adjusting the lengths of the intermediate connecting portion 62 and the holding portion 9, can realize the requirements of various length sizes on the basis of not adjusting the size of the chassis module, meets the requirements of different products, can reduce the size type of the chassis module, reduce the weight of parts of the chassis module, reduce the difficulty of stock, reduce the production cost, and greatly improve the use flexibility and the expansion performance of the chassis assembly.

Embodiment five provides a splice chassis, as shown in fig. 20, comprising two chassis assemblies as described in either embodiment three or embodiment four. The two chassis assemblies are arranged side by side along the longitudinal direction; the spliced chassis further comprises an expansion bracket, wherein 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 portions 51 of the extension bracket are respectively connected with adjacent connection structures of the two chassis assemblies, so that the two spliced chassis are connected together.

Specifically, the connection structure of the two chassis assemblies is located between the two fixing portions 51, so that the two fixing portions 51 limit the connection structure of the two chassis assemblies to the middle, separation of the two chassis assemblies can be effectively prevented, and connection reliability is improved.

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

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

In fig. 21 and 22, the structure of the extension bracket for connecting the chassis assembly of the third embodiment is shown, and it can be seen that a third connecting hole 54 is provided on each fixing portion 51 of the extension bracket, and 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 the two chassis assemblies respectively, for example, by bolting, and the length of the fixing portion 51 is substantially equal to the length of the two connecting brackets 3 after plugging.

Preferably, a fourth connecting hole 55 is further provided on each fixing portion 51, and the fixing portions 51 and the connecting support 3 can be fixedly connected through the fourth connecting holes 55, and the connecting manner can adopt the manners of bolts, pins, and the like, so that the firmness and the reliability of the connection are further ensured.

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

Preferably, a fourth connecting hole 55 is further provided on each fixing portion 51, and the fixing portions 51 and the connecting support 3 can be fixedly connected through the fourth connecting holes 55, and the connecting manner can adopt a bolt, a pin, a rivet and the like to further ensure the firmness and the reliability of connection.

By arranging the extension bracket, the spliced chassis realizes the extension of the transverse length, combines the expandability of the longitudinal width of the chassis assembly, can realize the combination of various transverse lengths and longitudinal widths on the basis of ensuring that the basic size of the chassis module maintains one or more (less, such as two or three), greatly reduces the number of spare parts and the production cost, and improves the flexibility of production.

An embodiment six provides a piece of furniture, which adopts the chassis components in the embodiment three and the embodiment four and/or the spliced chassis in the embodiment five. The furniture of this embodiment has reduced the part quantity of chassis by a wide margin when realizing the nimble change of furniture size, through collocation different chassis module and connection structure, can satisfy the demand of equidimension, very big reduction spare part's quantity and manufacturing cost, improved the flexibility of production.

The above embodiments are merely illustrative 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 about variations or substitutions within the technical scope of the present invention, and the invention should be covered. Therefore, the protection scope of the invention is subject to the protection scope of the claims.

Claims

1. A connecting structure comprises two connecting brackets and a locating pin, and is characterized in that the connecting brackets comprise an upper hook part and a lower hook part,

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

the lower surface of the hook body of the first upper hook part and the lower surface of the hook body of the second upper hook part are on a first inclined plane, the first inclined plane is inclined downwards along the inserting direction of the locating pin, and the first inclined plane has a first inclined angle theta 1 relative to the horizontal middle plane of the connecting bracket;

the upper surface of the hook body of the first lower hook part and the upper surface of the hook body of the second lower hook part are on a second inclined plane, and the second inclined plane is inclined upwards along the inserting direction of the positioning pin and is provided with a second inclined angle theta 2 relative to the horizontal middle plane of the connecting bracket;

the first inclination angle theta 1 and the second inclination angle theta 2 are equal.

2. The connecting structure according to claim 1, wherein the hook inner side surface of the first upper hook portion, the hook inner side surface of the second upper hook portion, the hook inner side surface of the first lower hook portion, and the hook inner side surface of the second lower hook portion are positioned on the same third inclined plane, and form a third inclined angle θ3 with the vertical side surface of the connecting bracket.

3. The connection structure according to claim 1, wherein the positioning pin includes a first positioning pin having a cross-shaped cross section, the cross-sectional area of the first positioning pin gradually decreasing from a rear end to a front end.

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

The locating pin is centrally symmetrical relative to the axis.

5. The connection structure according to claim 3 or 4, wherein the first positioning pin has a horizontal and vertical middle surface, and an upper/lower side surface of the horizontal head portion forms a fourth inclination angle θ4 with the horizontal middle surface; the left/right side surface of the vertical head forms a fourth inclination angle theta 4 with the vertical center surface, and the fourth inclination angle theta 4 is equal to the third inclination angle theta 3.

6. The connection structure according to claim 1, further comprising a holding portion provided on a side of the connection bracket opposite to a positioning pin insertion side and connected to the positioning pin, the holding portion holding the positioning pin in the connection bracket.

7. Chassis assembly comprising a first chassis module and a second chassis module, characterized in that it further comprises a connection structure according to any one of claims 1-6, wherein,

wherein, the liquid crystal display device comprises a liquid crystal display device,

the first chassis module and the second chassis module are respectively provided with a connecting bracket on opposite sides, the connecting brackets of the first chassis module and the connecting brackets of the second chassis module are connected in an inserting mode to form a first inserting channel and a second inserting channel together, the first locating pin is inserted into the first inserting channel and the second inserting channel from the inserting side of the connecting brackets, and the retaining part is connected with the first locating pin on one side, opposite to the inserting side, of the connecting brackets.

8. A splice chassis comprising two chassis assemblies according to claim 7, said two chassis assemblies being arranged side by side;

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

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

9. The splice tray of claim 8, wherein the securing portion is connected to a retaining portion of an adjacent connecting structure of the two tray assemblies; or alternatively

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

10. Furniture, characterized in that a chassis assembly according to claim 7 or a splice chassis according to claim 8 or 9 is used.