Invisible connection structure at any angle and furniture using the same

Abstract

The present invention discloses an arbitrary angle invisible connection structure and furniture using the same, which is used to connect a first component and a second component, wherein a groove is provided at the end of the first component, a recessed groove is provided at the groove, and a T-shaped groove is provided on an outer surface plane of the second component; an arbitrary angle invisible connection component is fixedly installed in the recessed groove, and the arbitrary angle invisible connection component includes a fixing part and a plug-in part, wherein the fixing part is fixedly connected to the bottom of the recessed groove, and the plug-in part is hinged to the fixing part through a hinge shaft, and after the plug-in part is put into the wide groove end of the T-shaped groove and inserted into the narrow groove end, the groove surface of the first component and the outer surface plane of the second component are attached and locked. The structure can adapt to the assembly angle of the two components when performing invisible connection, and can be repeatedly disassembled and assembled, with high flexibility, low cost, and high assembly efficiency, opening up a broad space for the personalized development of industries such as furniture.

Description

Technical Field

[0001] The present invention relates to the technical field of invisible connection devices, and in particular to a structure suitable for invisible connection of two components at any angle. The present invention also relates to furniture using the invisible connection structure. Background Art

[0002] For the furniture industry, the market generally adopts the process of three-in-one connectors (or eccentric connectors) to realize the assembly of furniture components (mainly panels). Three-in-one connectors have been invented and promoted since the 1970s, and have a history of nearly 50 years. The basic structural principle has not changed fundamentally, and it occupies the mainstream market of furniture assembly technology. However, three-in-one connectors only solve the connection problem of furniture panels. There are inherent design defects in its structural principle, which are mainly manifested as follows: first, the locking nut is exposed, affecting the overall aesthetics of the furniture; second, the pre-embedded process is not firm, and the furniture is easily loosened during transportation or multiple disassembly and assembly, affecting the reuse of the furniture, and even causing the furniture to be scrapped.

[0003] As people's living standards continue to improve, consumers' requirements for furniture are not limited to practicality. They have higher requirements for aesthetics, multiple disassembly and assembly, and durability during transportation. A new connection process is urgently needed to solve the above problems existing in the traditional three-in-one connection process.

[0004] Invisible connection structures have complied with consumer demand and have developed greatly in recent years.

[0005] Chinese invention patent CN106194944B discloses a furniture invisible connection structure, which is used to vertically connect two boards. The two boards are respectively fixed with mutually compatible concave and convex connectors, which are hidden in the board body, and the overall effect is beautiful. During assembly, the two boards can be longitudinally tightened and connected together through the threaded connection of the locking bolt and the locking seat. During disassembly, the two boards can be disassembled by simply loosening the locking bolt. This "front plug and rear lock" structure greatly improves the assembly efficiency and is easy to disassemble and reassemble.

[0006] In order to simplify the invisible connection structure, Chinese invention patent CN111173815A discloses a telescopic invisible connection structure, whose connector can be elastically retracted. When the installation space is limited, for example, the upper and lower boards have been installed, when installing the middle board, the plug-in part of the connector is first elastically compressed, and when it touches the wide end of the T-slot of the other board, the connector is elastically released, and then the connector is pushed into the narrow end of the T-slot, and the narrow end limits the plug-in part. This connection structure is simple, and the assembly order of the furniture panels is not restricted, which improves the assembly efficiency of the furniture and reduces the assembly cost.

[0007] However, for some application scenarios with arbitrary angle connection requirements, existing hardware accessories are difficult to meet the requirements, which seriously restricts the requirements of personalized furniture design and furniture assembly. Summary of the invention

[0008] In view of this, the present invention aims to solve two technical problems. The first is to provide an invisible connection structure with any angle, and the second is to provide a piece of furniture using the invisible connection structure. The structure can adapt to the assembly angle of the two components when performing invisible connection, and can be repeatedly disassembled and assembled, with high flexibility, low cost and high assembly efficiency, opening up a broad space for the personalized development of industries such as furniture.

[0009] In order to solve the above-mentioned first technical problem, the technical solution adopted by the present invention is:

[0010] A random angle invisible connection structure is used to connect two components, the two components include a first component and a second component, the end of the first component is provided with a groove, the groove is provided with a recessed groove, an outer surface plane of the second component is provided with a T-shaped groove, the T-shaped groove has a wide groove end and a narrow groove end; an random angle invisible connection component is fixedly installed in the recessed groove, the random angle invisible connection component includes a fixing part and a plug-in part, the fixing part is fixedly connected to the groove bottom of the recessed groove, the plug-in part is hinged to the fixing part through a hinge shaft, after the plug-in part is placed from the wide groove end of the T-shaped groove and inserted into the narrow groove end, the groove surface of the first component is fitted and locked with the outer surface plane of the second component.

[0011] Among them, the fixing part includes an integrally arranged fixing part and a first hinged part, the fixing part is provided with a fastener mounting hole, the first hinged part is provided with a first mounting hole of the hinge shaft, and the fastener mounting hole is vertically arranged to the first mounting hole of the hinge shaft; the plug-in part includes an integrally arranged tensioning head, a transition neck and a second hinged part, the tensioning head protrudes from the transition neck, the width of the tensioning head is adapted to the wide groove of the T-slot, the width of the transition neck is smaller than the width of the narrow groove of the T-slot, and the second hinged part is provided with a second mounting hole of the hinge shaft.

[0012] Wherein, the first hinged portion and the second hinged portion are both lower than the groove surface of the first component, and the inner end surface of the tensioning head is overlapped and locked with the locking end surface of the T-shaped groove.

[0013] Wherein, the second hinged portion comprises two ear plates respectively provided integrally with the transition neck, the ear plates are provided with the second mounting hole of the hinge shaft, and the first hinged portion is located between the two ear plates.

[0014] Wherein, the hinge shaft comprises a bolt and a nut, the bolt passes through the first mounting hole of the hinge shaft and the second mounting hole of the hinge shaft, and is fixed between the two ear plates of the second hinge part through the nut.

[0015] The cross section of the tensioning head is an oblong or rectangular shape, and its length direction is consistent with the length direction of the sink groove of the first component or the length direction of the T-shaped groove of the second component.

[0016] To solve the above second technical problem, the technical solution adopted by the present invention is:

[0017] A piece of furniture comprises: a first component and a second component, wherein a groove is formed at the end of the first component, a recess is formed at the groove, a T-shaped groove is formed on an outer surface plane of the second component, and the T-shaped groove has a wide groove end and a narrow groove end; an arbitrary angle invisible connection component is fixedly installed in the recess, and the arbitrary angle invisible connection component comprises a fixing part and a plug-in part, the fixing part is fixedly connected to the groove bottom of the recess, and the plug-in part is hinged to the fixing part through a hinge shaft, and after the plug-in part is put into the wide groove end of the T-shaped groove and inserted into the narrow groove end, the groove surface of the first component is fitted and locked with the outer surface plane of the second component.

[0018] After adopting the above technical solution, the beneficial effects of the present invention are:

[0019] When in use, it is only necessary to fix the fastener in the recessed groove of the groove of the first component, and then make the groove surface of the first component face the outer surface plane of the T-slot of the second component, and then put the tension head of the plug-in component into the wide groove end of the T-slot and push it into the narrow groove end until the groove surface of the first component and the outer surface plane of the second component are attached and locked. Since the fastener and the plug-in component are hinged through the hinge shaft, the structure can adapt to the assembly angle of the two components when making an invisible connection, and can be repeatedly disassembled and assembled, with high flexibility, low cost, and high assembly efficiency, opening up a broad space for the personalized development of industries such as furniture. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a three-dimensional diagram of a connection component in an embodiment of an invisible connection structure at any angle of the present invention;

[0021] Figure 2 It is a top view of a connecting component fixed in a recessed groove of a groove of a first component in an embodiment of an arbitrary-angle invisible connecting structure of the present invention;

[0022] Figure 3 It is a top view of a second member with a T-shaped groove in an embodiment of an arbitrary-angle invisible connection structure of the present invention;

[0023] Figure 4It is a cross-sectional view of an embodiment of an invisible connection structure at any angle of the present invention;

[0024] In the figure:

[0025] 100, fastening member; 110, fixing portion; 111, fastener mounting hole; 120, first hinged portion; 121, hinged shaft first mounting hole;

[0026] 200, connector; 201, tension head; 202, transition neck; 203, ear plate;

[0027] 300, first component; 301, sink groove; 302, fastener; 303, groove surface;

[0028] 400, second component; 401, T-shaped groove; 402, outer surface plane;

[0029] 500. Articulated shaft. DETAILED DESCRIPTION

[0030] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0031] The arbitrary-angle invisible connection structure disclosed by the present invention can use hardware accessories (connection components) to perform invisible connection of two components at any angle. A groove is opened and a recessed groove is set at the end of one component, a T-shaped groove is opened on the outer surface plane of the other component, and then the hardware accessories (connection components) are fixed in the recessed groove of one component. The hardware accessories (connection components) can adapt to the assembly angle of the two components when performing invisible connection, and can be repeatedly disassembled and assembled, with high flexibility, low cost and high assembly efficiency, opening up a broad space for the personalized development of industries such as furniture.

[0032] The following first introduces the connection components, and then explains the working principle of the connection structure in detail in conjunction with the assembly process.

[0033] like Figure 1 As shown, an arbitrary angle invisible connection assembly includes: a fixing component 100 and a plug-in component 200, wherein the plug-in component 200 is hinged to the fixing component 100 via a hinge shaft 500.

[0034] The fixing member 100 includes a fixing portion 110 and a first hinge portion 120 which are integrally arranged. The fixing portion 110 is provided with a fastener mounting hole 111, and the first hinge portion 120 is provided with a hinge shaft first mounting hole 121 (see Figure 4 ), the fastener mounting hole 111 is vertically arranged with the hinge shaft first mounting hole 121.

[0035] The plug-in connector 200 includes a tensioning head 201, a transition neck 202 and a second hinged portion, wherein the tensioning head 201 protrudes from the transition neck 202, and the second hinged portion is provided with a second mounting hole for the hinged shaft. The second hinged portion includes two ear plates 203 respectively provided with the transition neck 202, and the ear plates 203 are provided with the second mounting hole for the hinged shaft, and the first hinged portion 120 is located between the two ear plates 203.

[0036] The hinge shaft 500 includes a bolt and a nut. The bolt passes through the first mounting hole of the hinge shaft and the second mounting hole of the hinge shaft, and is fixed between the two ear plates 203 of the second hinge part through the nut.

[0037] The cross section of the tension head is an oblong or rectangular shape, and when assembled, its length direction is consistent with the length direction of the first component's countersunk groove 301 or the length direction of the second component's T-shaped groove 401. When the connector 200 is inserted into the T-shaped groove, the long side will limit the relative rotation between the two components.

[0038] The assembly process of invisible connection of two components using the above connection components is as follows:

[0039] like Figure 2 and Figure 4 As shown, a groove is provided at the end of the first component 300, and a recessed groove 301 is provided at the groove. The fixing member 100 of the any-angle invisible connection assembly is first placed in the first recessed groove 301, so that the fitting surface of the fixing part fits with the bottom of the recessed groove 301, and the fastener 302 (such as a screw) passes through the fastener installation hole 111 to fasten the fixing member 100 in the recessed groove 301 of the first component 300. The first hinged portion 120 of the fixing member 100 and the second hinged portion of the plug-in component 200 are both lower than the groove surface 303 of the first component. In this way, when the tensioning head 201 of the plug-in component 200 is extended from the wide groove end of the T-shaped groove 401, the connection assembly will not interfere with the fitting and locking of the assembly surfaces of the two components.

[0040] like Figure 3 As shown, a T-shaped groove 401 is provided on an outer surface of the second member 400 , and the T-shaped groove 401 has a wide groove end and a narrow groove end.

[0041] like Figure 4As shown, during assembly, the groove surface 303 of the first component 300 is opposite to the outer surface plane 402 of the second component 400, and the assembly angle between the two is α, that is, the opening angle of the groove, which can be an acute angle or a right angle. Since the plug-in connector 200 and the fixing member 100 are hinged, the two can rotate relative to each other, so it can adapt to the assembly angle of the two components. Push the plug-in connector 200 into the narrow groove end along the length direction of the T-slot 401, tighten the inner end face of the head 201 to overlap with the locking end face of the T-slot 401, and then make the groove surface 303 of the first component fit and lock with the outer surface plane 402 of the second component.

[0042] The width of the tensioning head 201 is adapted to the wide groove of the T-slot, so that the connector 200 can be inserted from the wide groove end and can produce a guiding effect. The width of the transition neck 202 should be smaller than the width of the narrow groove of the T-slot, so that the connector 200 can be inserted into the narrow groove end of the T-slot and then positioned and locked at the narrow groove end.

[0043] The above invisible connection structure can be applied to various occasions with aesthetic requirements, especially suitable for the furniture industry. The two components are preferably plates, and the materials of the fasteners and connectors are not limited to hardware, but can also be engineering plastics, manufactured using injection molding technology.

[0044] The present invention is not limited to the above embodiments, and all improvements based on the concept, principle, structure and method of the present invention will fall within the protection scope of the present invention.

Claims

1. An arbitrary angle invisible connection structure, used to connect two components, the two components include a first component and a second component, the end of the first component is provided with a groove, the groove is provided with a countersunk groove, and an outer surface plane of the second component is provided with a T-shaped groove, the T-shaped groove has a wide groove end and a narrow groove end; characterized in that: An arbitrary angle invisible connection component is fixedly installed in the sink groove, and the arbitrary angle invisible connection component includes a fixing part and a plug-in part. The fixing part is fixedly connected to the bottom of the sink groove, and the plug-in part is hinged to the fixing part through a hinge shaft. After the plug-in part is put into the wide groove end of the T-shaped groove and inserted into the narrow groove end, the groove surface of the first component is attached to and locked with the outer surface plane of the second component; The fixing member comprises a fixing portion and a first hinge portion which are integrally arranged, the fixing portion is provided with a fastener mounting hole, the first hinge portion is provided with a hinge shaft first mounting hole, and the fastener mounting hole is arranged perpendicular to the hinge shaft first mounting hole; The plug-in connector includes a tightening head, a transition neck and a second hinged portion which are integrally arranged, wherein the tightening head protrudes from the transition neck, the width of the tightening head is adapted to the wide groove of the T-shaped slot, the width of the transition neck is smaller than the width of the narrow groove of the T-shaped slot, and the second hinged portion is provided with a second mounting hole for the hinge shaft; The first hinged portion and the second hinged portion are both lower than the groove surface of the first component, and the inner end surface of the tensioning head overlaps and is locked with the locking end surface of the T-shaped slot.

2. The invisible connection structure at any angle according to claim 1, characterized in that: The second hinged portion includes two ear plates respectively provided integrally with the transition neck, the ear plates are provided with the second mounting hole of the hinge shaft, and the first hinged portion is located between the two ear plates.

3. The invisible connection structure at any angle as claimed in claim 2, characterized in that: The hinge shaft comprises a bolt and a nut. The bolt passes through the first mounting hole of the hinge shaft and the second mounting hole of the hinge shaft and is fixed between the two ear plates of the second hinge part through the nut.

4. The invisible connection structure at any angle according to claim 1, characterized in that: The cross section of the tensioning head is an oblong circle or a rectangle, and the length direction thereof is consistent with the length direction of the countersunk groove of the first component or the length direction of the T-shaped groove of the second component.

5. A piece of furniture, comprising: The first component and the second component, the end of the first component is provided with a groove, the groove is provided with a countersunk groove, and an outer surface plane of the second component is provided with a T-shaped groove, the T-shaped groove has a wide groove end and a narrow groove end; characterized in that: An arbitrary angle invisible connection component is fixedly installed in the sink groove, and the arbitrary angle invisible connection component includes a fixing part and a plug-in part. The fixing part is fixedly connected to the bottom of the sink groove, and the plug-in part is hinged to the fixing part through a hinge shaft. After the plug-in part is put into the wide groove end of the T-shaped groove and inserted into the narrow groove end, the groove surface of the first component is attached to and locked with the outer surface plane of the second component; The fixing member comprises a fixing portion and a first hinge portion which are integrally arranged, the fixing portion is provided with a fastener mounting hole, the first hinge portion is provided with a hinge shaft first mounting hole, and the fastener mounting hole is arranged perpendicular to the hinge shaft first mounting hole; The plug-in connector includes a tightening head, a transition neck and a second hinged portion which are integrally arranged, wherein the tightening head protrudes from the transition neck, the width of the tightening head is adapted to the wide groove of the T-shaped slot, the width of the transition neck is smaller than the width of the narrow groove of the T-shaped slot, and the second hinged portion is provided with a second mounting hole for the hinge shaft; The first hinged portion and the second hinged portion are both lower than the groove surface of the first component, and the inner end surface of the tensioning head overlaps and is locked with the locking end surface of the T-shaped slot.

6. The furniture according to claim 5, characterized in that The second hinged part includes two ear plates respectively integrally arranged with the transition neck, the ear plates are provided with the second mounting hole of the hinge shaft, and the first hinged part is located between the two ear plates; the hinge shaft includes a bolt and a nut, the bolt passes through the first mounting hole of the hinge shaft and the second mounting hole of the hinge shaft, and is fixed between the two ear plates of the second hinged part by the nut.

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