A connecting unit and modular assembled furniture

Abstract

The application discloses a connecting unit and modular assembled furniture. The connecting unit comprises at least one connecting module, at least one locking connecting piece and at least one connecting pipe. The connecting module comprises a shell, the outer wall of the shell is provided with at least one first mounting surface, and the shell is provided with a first locking hole at the position of the first mounting surface. The connecting pipe is coaxially sleeved on the shell, the inner wall surface of the connecting pipe is formed with at least one second mounting surface which is complementary matched with the first mounting surface, the connecting pipe is provided with a second locking hole at the second mounting surface, and the second locking hole is correspondingly arranged with the first locking hole. The locking connecting piece is sequentially locked through the first locking hole and the second locking hole to connect the shell and the connecting pipe. The first mounting surface is arranged on the shell, and the second mounting surface is arranged on the connecting pipe, so that when the connecting unit is assembled, after the connecting pipe is coaxially sleeved on the shell, the locking connecting piece can be installed only by aligning the first locking hole and the second locking hole in the axial direction. The assembly is convenient and labor-saving, and the assembly experience is improved.

Description

Technical Field

[0001] This utility model relates to the field of modular assembly device technology, and in particular to a connection unit and modular assembled furniture. Background Technology

[0002] Existing frame boxes, brackets, or other support structures typically use methods such as plug-in, welding, adhesive, or threaded connections to connect adapters and connecting pipes. Among these, threaded connections are favored due to their strong connection and ease of installation and disassembly. In practical applications, most frame boxes, brackets, or support structures use threaded connections by directly tapping or threading the connecting end of the connecting pipe, and then similarly threading or tapping the connecting end of the adapter. During installation, the connection between the connecting pipe and the adapter is achieved by rotating the entire connecting pipe or adapter along its axis. Patent application number 2023108418607 proposes a method that uses two internally meshing bevel gears positioned before the propulsion structure, with the bevel gears housed within a housing. This converts horizontal rotational motion into vertical rotational motion, causing the screw to helically move horizontally along its axis, achieving a fastening effect without rotating the entire connecting pipe.

[0003] However, the existing outer shells are all cylindrical tubes, and the connecting tubes fitted onto the outer shells are also cylindrical tubes. The connecting tubes are connected and fixed to the outer shells by pins. This structure requires the connecting tubes and the outer shells to be aligned with the holes multiple times during the assembly process (at least twice along the axial and circumferential directions), which is inconvenient for assembly. Utility Model Content

[0004] To address the aforementioned problems, this utility model proposes a connection unit and modular assembled furniture.

[0005] The technical solution adopted by this utility model is as follows:

[0006] This application provides a connection unit, including at least one connection module, at least one locking connector, and at least one connection tube;

[0007] The connection module includes a housing, the outer wall of which has at least one first mounting surface so that the outer cross-section of the housing is not a complete circle, and the housing has a first locking hole;

[0008] The connecting tube is coaxially sleeved on the outer shell, and the inner wall surface of the connecting tube has at least one second mounting surface that complements the first mounting surface. The inner cross-sectional shape of the connecting tube is adapted to the outer cross-sectional shape of the outer shell. The connecting tube has a second locking hole on the second mounting surface, and the second locking hole is correspondingly provided with the first locking hole.

[0009] The locking connector passes through the first locking hole and the second locking hole in sequence to lock the outer shell and the connecting tube.

[0010] The outer casing has a first mounting surface, and the connecting tube has a second mounting surface that complements the first mounting surface. This allows the locking connector to be installed simply by coaxially aligning the connecting tube with the first and second locking holes during assembly of the connecting unit. This makes assembly convenient and labor-saving, improving the assembly experience.

[0011] Furthermore, the first mounting surface and the second mounting surface are mounting planes, and the first locking hole and the second locking hole are located on the first mounting surface and the second mounting surface, respectively.

[0012] Furthermore, the first locking hole extends through the outer casing, and the connecting pipe has a second locking hole on each of its two oppositely positioned pipe walls.

[0013] Furthermore, the locking connector is a knurled pin.

[0014] Furthermore, the outer cross-sectional shape of the outer shell is square, and the two opposite sides of the square outer shell form the first mounting surface;

[0015] The connecting pipe is a square tube, and the two opposite sides inside the square tube form the second mounting surface.

[0016] Furthermore, the outer wall of the connecting pipe of the square tube structure is provided with protruding ridges at the four corners, and the protruding ridges form a limiting installation groove between each other. The limiting installation groove is used to provide installation space for the components that cooperate with the connecting unit.

[0017] Furthermore, the connection module also includes a propulsion structure, and a first hole is formed inside the outer shell, with the propulsion structure disposed within the first hole;

[0018] The propulsion structure includes a screw and a helical mating element;

[0019] The first hole has a limiting installation channel, and the helical fitting element is disposed in the limiting installation channel. The helical fitting element is used to engage with the thread groove of the screw, so that the screw can be screwed in or out relative to the outer shell through the helical fitting element.

[0020] Furthermore, the first hole is arranged along the axial direction of the outer casing, and the outer casing also has a second hole, which is perpendicularly connected to the first hole;

[0021] It also includes a reversing structure, which includes an input component and an output component. The input component and the output component are located in the first hole and the second hole, respectively. The input component and the output component are connected, and when the input component is rotated in the horizontal direction, it drives the output component to rotate in the vertical direction.

[0022] The output component is axially slidably connected to the screw and rotates radially synchronously.

[0023] Furthermore, the input component includes a positioning rod and a driving bevel gear, and the output component includes a driven bevel gear that meshes with the driving bevel gear;

[0024] The positioning rod is located on the side of the driving bevel gear near the axis of the driven bevel gear;

[0025] The outer casing has a third hole inside, and the positioning rod is disposed in the third hole.

[0026] By setting a third hole and an input component with a positioning rod, the positioning rod cooperates with the third hole to share part of the torque, so that the meshing main and driven gears can withstand greater torque. Under the premise of meeting the same torque requirements, the reversing structure provided by this application can have a smaller size, thereby reducing the overall structural size of the connecting unit and enabling it to be used in more applications.

[0027] Furthermore, it also includes an adapter module;

[0028] The adapter module has multiple connection holes, each connection hole having an internal thread adapted to the screw, and each connection hole is used for threaded connection with the screw of a single adapter module.

[0029] The outer casing has two protrusions at the connection end that connects to the adapter module. The two protrusions are located on both sides of the screw and are arranged in a "I" shape with the screw.

[0030] The outer wall surface of the adapter module is provided with a sliding groove, which is arranged radially along the connection hole and passes through the connection hole.

[0031] When the screw is threaded into the connecting hole, the protrusion is located in the groove;

[0032] When the screw is not threaded into the connecting hole, the protrusion is located in the groove, or is dislodged from the adapter module through the groove.

[0033] Furthermore, the helical fitting element is elastic, and the helical fitting element is a U-shaped structure with an opening;

[0034] There is a gap between the groove wall of the limiting installation channel and the helical mating element, and the gap is used to provide space for the helical mating element to deform.

[0035] By incorporating a flexible helical fitting element, when the screw gets stuck with the element, continued screwing will cause the element to jump from one thread groove to the next, preventing it from jamming like existing nuts. Simultaneously, the flexible helical fitting element also ensures that the screw's rotation axis is not absolutely restricted by it. When the screw's rotation axis slightly deviates from the theoretical axis, the flexible helical fitting element adapts to the deviation, preventing rotational jamming.

[0036] The open structure gives the screw-fit element flexibility. In practical applications, the screw-fit element can also be a flexible but closed structure.

[0037] This application also provides a modular assembled furniture, including multiple connecting units and connecting plates;

[0038] The connection unit is one of the connection units described above;

[0039] The two ends of the connecting tube of the connecting unit are respectively sleeved on the outer shell of the adjacent connecting unit. The connecting tube is provided with an operation hole, which is provided corresponding to the second hole of the outer shell.

[0040] The connecting plate is laid on the surface of the connecting pipe.

[0041] The beneficial effects of this utility model are:

[0042] (1) A first mounting surface is provided on the outer shell, and a second mounting surface is provided on the connecting tube to complement the first mounting surface. This allows the locking connector to be installed simply by aligning the first locking hole and the second locking hole along the axial direction after the connecting tube is coaxially fitted onto the outer shell during assembly. This makes assembly convenient and labor-saving, and improves the assembly experience.

[0043] (2) By setting a third hole and an input component with a positioning rod, the positioning rod and the third hole cooperate to share part of the torque, so that the meshing main and driven gears can withstand greater torque. Under the premise of meeting the same torque requirements, the reversing structure provided by this application can have a smaller size, thereby reducing the overall structural size of the connecting unit so as to have more application scenarios.

[0044] (3) By setting up an elastic helical fitting element, when the screw is stuck with the helical fitting element, if the screw is continued to be turned, under the action of elasticity, the helical fitting element will jump from the front thread groove to the back thread groove of the screw, and will not get stuck like the existing nut; at the same time, the elastic helical fitting element also makes the rotation axis of the screw not absolutely restricted by the helical fitting element. When the rotation axis of the screw is slightly deviated from the theoretical rotation axis, the elastic helical fitting element can adapt to the deviation of the screw and avoid the occurrence of rotation jamming. Attached Figure Description

[0045] Figure 1 This is a schematic diagram of the axial structure of the connecting unit according to an embodiment of the present invention;

[0046] Figure 2 This is a top view of the connecting unit in an embodiment of the present invention;

[0047] Figure 3 yes Figure 2 Schematic diagram of the cross-sectional structure of AA;

[0048] Figure 4 yes Figure 2 Schematic diagram of the cross-sectional structure of BB;

[0049] Figure 5 yes Figure 4 A magnified schematic diagram of the structure of C in the middle;

[0050] Figure 6 This is an axial side view of the connecting unit in an embodiment of the present invention (with hidden connecting pipe).

[0051] Figure 7 This is an axial view of the connection unit in an embodiment of the present invention (hidden connecting pipe, adapter module, upper shell and locking connector).

[0052] Figure 8 This is a schematic diagram of the axial structure of the input component in an embodiment of this utility model.

[0053] The labels for the attached figures are as follows:

[0054] 10. Connecting module; 110. Housing; 111. First mounting surface; 112. First locking hole; 113. First hole; 114. Limiting mounting channel; 115. Second hole; 116. Third hole; 117. Protrusion; 120. Screw; 130. Helical mating element; 140. Input component; 141. Positioning rod; 142. Drive bevel gear; 150. Output component; 20. Locking connector; 30. Connecting pipe; 301. Second mounting surface; 302. Second locking hole; 303. Operating hole; 310. Protruding ridge; 311. Limiting mounting groove; 40. Adapter module; 401. Connecting hole; 402. Slide groove. Detailed Implementation

[0055] The present invention will now be described in detail with reference to the accompanying drawings.

[0056] like Figures 1-8 As shown, this application provides a connection unit, including at least one connection module 10, at least one locking connector 20, and at least one connection tube 30;

[0057] The connection module 10 includes a housing 110, the outer wall of which has at least one first mounting surface 111 so that the outer cross section of the housing 110 is not a complete circle, and the housing 110 has a first locking hole 112 at the first mounting surface 111.

[0058] The connecting tube 30 is coaxially sleeved on the outer shell 110. The inner wall surface of the connecting tube 30 has at least one second mounting surface 301 that complements the first mounting surface 111. The second mounting surface 301 makes the inner cross-sectional shape of the connecting tube 30 match the outer cross-sectional shape of the outer shell 110. The connecting tube 30 has a second locking hole 302 on the second mounting surface 301, and the second locking hole 302 is correspondingly provided with the first locking hole 112.

[0059] The locking connector 20 passes through the first locking hole 112 and the second locking hole 302 in sequence to lock the outer shell 110 and the connecting tube 30.

[0060] The outer casing 110 has a first mounting surface 111, and the connecting pipe 30 has a second mounting surface 301 that complements the first mounting surface 111. This allows the locking connector 20 to be installed simply by aligning the first locking hole 112 and the second locking hole 302 axially after the connecting pipe 30 is coaxially fitted onto the outer casing 110 during assembly. This makes assembly convenient and effortless, improving the assembly experience.

[0061] In this embodiment, the first mounting surface 111 and the second mounting surface 301 are mounting planes, and the first locking hole 112 and the second locking hole 302 are located on the first mounting surface 111 and the second mounting surface 301, respectively.

[0062] In actual use, the first mounting surface 111 and the second mounting surface 301 can also be mounting curved surfaces, and the first locking hole 112 and the second locking hole 302 can also not be set at the positions of the first mounting surface 111 and the second mounting surface 301.

[0063] In this embodiment, the first locking hole 112 is provided through the outer shell 110, and the connecting pipe 30 has a second locking hole 302 on each of the two oppositely arranged pipe walls.

[0064] In this embodiment, the locking connector 20 is a knurled pin.

[0065] In this embodiment, there are two first mounting surfaces 111 and two second mounting surfaces 301;

[0066] The outer cross-sectional shape of the housing 110 is square, and the two opposite sides of the square housing 110 form the aforementioned first mounting surface 111;

[0067] The connecting pipe 30 is a square tube, and the two opposite sides inside the square tube form the aforementioned second mounting surface 301.

[0068] Square tube connectors and square outer casings make assembly easier.

[0069] In this embodiment, the outer wall of the square tube connecting pipe 30 is provided with protruding ribs 310 at the four corner positions. The protruding ribs 310 form a limiting installation groove 311 between adjacent protruding ribs. The limiting installation groove 311 is used to provide installation space for the components that cooperate with the connecting unit.

[0070] In this embodiment, the limiting mounting groove 311 has a T-shaped structure.

[0071] In this embodiment, a limiting installation groove 311 is provided on each of the four peripheral sidewalls of the square tube.

[0072] In this embodiment, the connecting module 10 further includes a pushing structure, and a first hole 113 is formed in the outer shell 110, and the pushing structure is disposed in the first hole 113;

[0073] The propulsion structure includes a screw 120 and a helical mating element 130;

[0074] The first hole 113 has a limiting installation channel 114 inside the channel, and the screw fitting element 130 is set in the limiting installation channel 114. The screw fitting element 130 is used to engage with the thread groove of the screw 120, so that the screw 120 can be screwed in or out relative to the outer shell 110 through the screw fitting element 130.

[0075] In this embodiment, the first hole 113 is arranged along the axial direction of the outer shell 110, and the outer shell 110 is also provided with a second hole 115, which is perpendicularly connected to the first hole 113.

[0076] It also includes a reversing structure, which includes an input component 140 and an output component 150. The input component 140 and the output component 150 are located in the first hole 113 and the second hole 115, respectively. The input component 140 and the output component 150 are connected, and when the input component 140 is rotated in the horizontal direction, it drives the output component 150 to rotate in the vertical direction.

[0077] The output component 150 is axially slidably connected to the screw 120 and rotates radially synchronously.

[0078] In this embodiment, the input component 140 includes a positioning rod 141 and a driving bevel gear 142, and the output component 150 includes a driven bevel gear that meshes with the driving bevel gear 142.

[0079] The positioning rod 141 is located on the side of the driving bevel gear 142 near the axis of the driven bevel gear;

[0080] The outer casing 110 has a third hole 116 inside, and the positioning rod 141 is located inside the third hole 116.

[0081] By setting a third hole 116 and an input component 140 with a positioning rod 141, the positioning rod 141 cooperates with the third hole 116 to share part of the torque, so that the meshing master and driven gears can withstand greater torque. Under the premise of meeting the same torque requirements, the reversing structure provided by this application can have a smaller size, thereby reducing the overall structural size of the connecting unit and enabling it to have more application scenarios.

[0082] In this embodiment, the size of the outer shell 110 can be reduced to 11*11*35mm. This represents a significant breakthrough compared to the existing minimum outer shell 110 of 25*25*45mm.

[0083] In this embodiment, the output end of the driven bevel gear is provided with a regular hexagonal prism, and the end of the screw 120 that mates with the output end of the driven bevel gear has a regular hexagonal blind hole adapted to the regular hexagonal prism. The regular hexagonal prism is disposed in the regular hexagonal blind hole, slides along the regular hexagonal blind hole, and drives the screw 120 to rotate.

[0084] In this embodiment, the drive bevel gear 142 and the positioning rod 141 are also provided with regular hexagonal holes so as to rotate the drive bevel gear.

[0085] In this embodiment, a converter module 40 is also included;

[0086] The adapter module 40 has multiple connection holes 401, and the connection holes 401 are provided with internal threads adapted to the screw 120. Each connection hole 401 is used for threaded connection with the screw 120 of a single connection module 10.

[0087] The housing 110 has two protrusions 117 at the connection end that connects to the adapter module 40. The two protrusions 117 are located on both sides of the screw 120 and are arranged in a "I" shape with the screw 120.

[0088] The outer wall surface of the adapter module 40 is provided with a sliding groove 402, which is arranged radially along the connection hole 401 and passes through the connection hole 401.

[0089] When the screw 120 is threaded into the connecting hole 401, the protrusion 117 is located in the groove 402;

[0090] When the screw 120 is not threaded into the connection hole 401, the protrusion 117 is located in the slide groove 402, or is dislodged from the adapter module 40 through the slide groove 402.

[0091] When assembling the connecting unit, the outer shell 110 is first slid into the slide groove 402 of the adapter module 40 through the protrusion 117, which facilitates the stable and accurate docking of the connecting hole 401 and the screw 120. When disassembling the connecting unit, the protrusion 117 is located in the slide groove 402 and will not directly detach from the adapter module 40, thus ensuring good safety.

[0092] The opposing connecting holes 401 are coaxially arranged. The end of the screw 120 connected to the adapter module 40 has an internal hexagon blind hole. The screw 120 can be tightened or unscrewed through the opposing connecting holes 401.

[0093] In this embodiment, the helical engagement element 130 is elastic and has a U-shaped structure with an opening;

[0094] There is a gap between the groove wall of the limiting installation channel 114 and the screw-fit element 130, which provides space for the screw-fit element 130 to deform.

[0095] By setting an elastic helical engagement element 130, when the screw 120 is stuck with the helical engagement element 130, if the screw 120 is continued to be turned, under the action of elasticity, the helical engagement element 130 will jump from the front thread groove to the back thread groove of the screw 120, and will not get stuck like existing nuts. At the same time, the elastic helical engagement element 130 also makes the rotation axis of the screw 120 not absolutely restricted by the helical engagement element 130. When the rotation axis of the screw 120 deviates slightly from the theoretical rotation axis, the elastic helical engagement element 130 can adapt to the deviation of the screw 120 and avoid the occurrence of rotational jamming.

[0096] The open structure gives the screw-fit element 130 elasticity. In practical use, the screw-fit element 130 can also be an elastic but closed structure.

[0097] In other embodiments, the screw-fit element 130 may also be a nut.

[0098] In this embodiment, the outer shell 110 includes an upper shell and a lower shell that are fastened together.

[0099] In this embodiment, the helical fitting element 130 is a steel wire, and the outer diameter of the steel wire is adapted to the width of the thread groove.

[0100] In this embodiment, the screw-fit element 130 has a mating part and a closing part, the size of which is smaller than the outer diameter of the screw 120;

[0101] The mating part is used to engage with the screw 120 in the thread groove so that the screw 120 can be screwed in or out.

[0102] In this embodiment, the limiting installation channel 114 forms two through holes in the outer shell 110, and the two through holes are located on both sides of the first hole 113.

[0103] This application also provides a modular assembled furniture, including multiple connecting units and connecting plates;

[0104] The connecting unit is one of the connecting units described above;

[0105] The two ends of the connecting tube 30 of the connecting unit are respectively sleeved on the outer shell 110 of the adjacent connecting unit. The connecting tube 30 is provided with an operation hole 303, which is corresponding to the second hole 115 of the outer shell 110.

[0106] The connecting plate is placed on the surface of the connecting pipe 30.

[0107] The above description is only a preferred embodiment of the present utility model and does not limit the scope of patent protection of the present utility model. Any equivalent structural transformations made based on the content of the present utility model specification and drawings, whether directly or indirectly applied to other related technical fields, are similarly included within the scope of protection of the present utility model.

Claims

1. A connection unit, characterized in that, It includes at least one connecting module, at least one locking connector, and at least one connecting tube; The connection module includes a housing, the outer wall of which has at least one first mounting surface so that the outer cross-section of the housing is not a complete circle, and the housing has a first locking hole; The connecting tube is coaxially sleeved on the outer shell, and the inner wall surface of the connecting tube has at least one second mounting surface that complements the first mounting surface. The inner cross-sectional shape of the connecting tube is adapted to the outer cross-sectional shape of the outer shell. The connecting tube has a second locking hole, and the second locking hole is correspondingly provided with the first locking hole. The locking connector passes through the first locking hole and the second locking hole in sequence to lock the outer shell and the connecting tube.

2. The connection unit as described in claim 1, characterized in that, The first locking hole extends through the outer casing, and the connecting pipe has a second locking hole on each of its two oppositely arranged pipe walls; The first mounting surface and the second mounting surface are mounting planes, and the first locking hole and the second locking hole are located on the first mounting surface and the second mounting surface, respectively.

3. A connection unit as described in claim 1, characterized in that, The locking connector is a knurled pin.

4. A connection unit as described in claim 1, characterized in that, The outer cross-sectional shape of the outer shell is square, and the two opposite sides of the square outer shell form the first mounting surface; The connecting pipe is a square tube, and the two opposite sides inside the square tube form the second mounting surface.

5. A connection unit as described in claim 4, characterized in that, The outer wall of the connecting pipe with the square tube structure has protruding ridges at the four corners. The protruding ridges form a limiting installation groove between each other. The limiting installation groove is used to provide installation space for the components that cooperate with the connecting unit.

6. A connection unit as described in claim 1, characterized in that, The connection module further includes a propulsion structure, and a first hole is formed inside the outer shell, with the propulsion structure disposed within the first hole; The propulsion structure includes a screw and a helical mating element; The first hole has a limiting installation channel, and the helical fitting element is disposed in the limiting installation channel. The helical fitting element is used to engage with the thread groove of the screw, so that the screw can be screwed in or out relative to the outer shell through the helical fitting element.

7. A connection unit as described in claim 6, characterized in that, The first hole is provided along the axial direction of the outer shell, and the outer shell is also provided with a second hole, which is perpendicularly connected to the first hole; It also includes a reversing structure, which includes an input component and an output component. The input component and the output component are located in the first hole and the second hole, respectively. The input component and the output component are connected, and when the input component is rotated in the horizontal direction, it drives the output component to rotate in the vertical direction. The output component is axially slidably connected to the screw and rotates radially synchronously. The input component includes a positioning rod and a driving bevel gear, and the output component includes a driven bevel gear that meshes with the driving bevel gear; The positioning rod is located on the side of the driving bevel gear near the axis of the driven bevel gear; The outer casing has a third hole inside, and the positioning rod is disposed in the third hole.

8. A connection unit as described in claim 6, characterized in that, It also includes an adapter module; The adapter module has multiple connection holes, each connection hole having an internal thread adapted to the screw, and each connection hole is used for threaded connection with the screw of a single adapter module. The outer casing has two protrusions at the connection end that connects to the adapter module. The two protrusions are located on both sides of the screw and are arranged in a "I" shape with the screw. The outer wall surface of the adapter module is provided with a sliding groove, which is arranged radially along the connection hole and passes through the connection hole.

9. A connection unit as described in claim 6, characterized in that, The helical fitting element is elastic and has a U-shaped structure with an opening; There is a gap between the groove wall of the limiting installation channel and the helical mating element, and the gap is used to provide space for the helical mating element to deform.

10. A modular assembled furniture, characterized in that, Includes multiple connection units and connection plates; The connecting unit is a connecting unit as described in any one of claims 1 to 9; The two ends of the connecting tube of the connecting unit are respectively sleeved on the outer shell of the adjacent connecting unit. The connecting tube is provided with an operation hole, which is provided corresponding to the second hole of the outer shell. The connecting plate is laid on the surface of the connecting pipe.

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