A type of leaning connection structure and furniture

Abstract

This application discloses a leaning connection structure and furniture, including a seat frame and a backrest. The seat frame has a first positioning part and a second positioning part, and the backrest has a first limiting part for connecting with the first positioning part and a second limiting part for connecting with the second positioning part. When the first positioning part is connected to the first limiting part in a first direction, and the second positioning part is connected to the second limiting part in a second direction, the backrest cannot rotate relative to the seat frame, wherein the included angle between the first direction and the second direction is not zero. This application provides a leaning connection structure and furniture with a simple and reliable connection structure, which is conducive to product standardization.

Description

Technical Field

[0001] This application relates to the field of home furnishing technology, and in particular to a leaning connection structure and furniture. Background Technology

[0002] With the development of the home furnishing industry, people have increasingly higher requirements for the performance of furniture. Furniture with backrests, such as sofas and beds, often use many nails and bolts in their design and assembly to achieve strong and stable connections. However, this method of connection can damage the structure of the furniture materials and affect the overall strength of the furniture. Summary of the Invention

[0003] To solve the above technical problems, this application provides a leaning connection structure and furniture, which is simple, reliable, and easy to assemble and disassemble.

[0004] In a first aspect, this application provides a leaning connection structure, including a seat and a backrest. The seat has a first positioning part and a second positioning part, and the backrest has a first limiting part for connecting with the first positioning part and a second limiting part for connecting with the second positioning part. When the first positioning part is connected to the first limiting part in a first direction and the second positioning part is connected to the second limiting part in a second direction, the backrest cannot rotate relative to the seat. The angle between the first direction and the second direction is not zero.

[0005] By adopting the above technical solution, the base and the backrest are connected in the first and second directions, which not only achieves the connection between the base and the backrest but also restricts the rotation of the backrest relative to the base. With the base equipped with a first and second positioning part, and the backrest equipped with a first and second limiting part, when the backrest is connected to the base, the first positioning part and the first limiting part are connected in the first direction, and the second positioning part and the second limiting part are connected in the second direction, thus restricting the four degrees of freedom of the backrest relative to the base. Only one degree of freedom of movement and one degree of freedom of rotation in the assembly direction are not restricted. The structure is simple, facilitating the assembly and disassembly of the backrest and the base, ensuring reliable and stable function of the backrest, and allowing it to withstand large horizontal static load tests.

[0006] In conjunction with the first aspect, a further embodiment is that the angle between the first direction and the second direction ranges from 100° to 120°, preferably 107°.

[0007] By adopting the above technical solutions, the tilt design is not only aesthetically pleasing but also effectively prevents the backrest from flipping and swaying forward. The angle design reduces the movement of the backrest in the degree of rotational freedom, ensuring the stability of the backrest connection and the reliability of its function.

[0008] In conjunction with the first aspect, a further solution is provided whereby the seat frame has a third positioning part and the backrest has a third limiting part. When the first positioning part is connected to the first limiting part in a first direction and the second positioning part is connected to the second limiting part in a second direction, the third positioning part is connected to the third limiting part in a third direction, wherein the angle between the third direction and both the first and second directions is not zero.

[0009] By adopting the above technical solution, the angle between the third direction and the first and second directions is not zero. The connection between the third positioning part and the third limiting part in the third direction can restrict the degree of freedom of movement of the support frame in the assembly direction, reducing the risk of the support frame detaching from the seat frame upward.

[0010] In conjunction with the first aspect, a further solution is that when the first positioning part is connected to the first limiting part in the first direction, the second positioning part is connected to the second limiting part in the second direction, and the third positioning part is connected to the third limiting part in the third direction, the third positioning part and the third limiting part prevent the backrest from moving relative to the seat in the first direction and the third direction.

[0011] By adopting the above technical solution, the third positioning part and the third limiting part can not only restrict the movement of the backrest relative to the seat in the third direction, but also restrict the movement of the backrest relative to the seat in the first direction, thus improving reliability.

[0012] In conjunction with the first aspect, a further solution also includes fasteners, wherein the second limiting part and the base are fixedly connected by fasteners.

[0013] By adopting the above technical solution, under the premise of the aforementioned degree of freedom restriction, the fastener can fully limit the six degrees of freedom of the backrest and the seat, so that the two are completely and securely connected, which is suitable for product design schemes where the backrest and the seat are not frequently disassembled.

[0014] In conjunction with the first aspect, a further solution also includes a connector, which prevents the backrest and the seat from moving relative to each other in a plane perpendicular to the first direction when the first positioning part is connected to the first limiting part in the first direction.

[0015] By adopting the above technical solution, the connection reliability between the first positioning part and the first limiting part is further improved, and the relative movement between the first positioning part and the first limiting part is restricted.

[0016] In conjunction with the first aspect, a further solution is provided whereby the seat frame has a fourth positioning part and the backrest has a fourth limiting part. When the first positioning part and the first limiting part are connected in the first direction, the fourth positioning part and the fourth limiting part are inserted and engaged in the fourth direction, and the fourth direction forms an angle with the first direction.

[0017] By adopting the above technical solution, the insertion direction of the fourth positioning part and the fourth limiting part can be designed to be perpendicular to the support surface of the base frame and the ground, and the first direction forms an inclined angle with the support surface of the base frame and the ground. Through this design, the movement of the backrest and the base frame in the plane perpendicular to the first direction can be limited, and the rotation of the backrest relative to the base frame can be restricted. Only the fourth direction can move freely, thereby achieving reliable connection and convenient assembly and disassembly of the backrest.

[0018] In conjunction with the first aspect, a further solution is provided whereby the first positioning part includes a support rod, a first area is provided between the support rod and the second positioning part in the first direction, and a second area is provided between the support rod and the second positioning part in the second direction; when the first positioning part is connected to the first limiting part in the first direction, the support rod abuts against the second limiting part, and the second limiting part is located within the space enclosed by the first area and the second area.

[0019] By adopting the above technical solution, both the first and second zones can restrict the degree of freedom of the support frame relative to the seat frame, and facilitate the disassembly and assembly of the support frame relative to the seat frame. When the support frame is subjected to a leaning force, the support rod forms a fulcrum, and the second positioning part forms a resistance point, which can withstand a large leaning force.

[0020] In conjunction with the first aspect, a further solution is that the third limiting part is connected to the second limiting part in a U-shape, and the first positioning part and the second positioning part are fixedly connected.

[0021] By adopting the above technical solution, the third limiting part and the second limiting part are connected as one unit, resulting in a more stable structure. The fixed connection between the first positioning part and the second positioning part reduces the space occupied. The first positioning part and the second positioning part can be designed as one unit, resulting in a simple and reasonable structure that occupies less space and has higher strength.

[0022] Secondly, this application provides a piece of furniture, including the leaning connection structure as described in the first aspect.

[0023] By adopting the above technical solution, furniture using the first-party leaning connection structure, such as sofas or beds, can easily disassemble the backrest and facilitate standardized design, which is beneficial for the combined application of different backrests. The backrest can be a backrest or armrests, and different combinations of backrests can create products of different specifications to meet the functional and aesthetic needs of different consumers.

[0024] In summary, this application has at least one of the following beneficial technical effects:

[0025] 1. This application relies on a connecting structure, resulting in a simple product structure that is easy to assemble and disassemble.

[0026] 2. This application relies on a connection structure, which changes the traditional connection method and structure of the support frame. It has high reliability, can withstand higher horizontal static load tests, and has a wider range of applications.

[0027] 3. The furniture in this application is easy to assemble and disassemble, has reliable function, and can be standardized in design to achieve different combinations. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the structure of the first embodiment of the connection structure of this application;

[0029] Figure 2 This is a perspective sectional view of the first embodiment of the connection structure of this application;

[0030] Figure 3 This is an exploded structural diagram of the second embodiment of the connection structure of this application;

[0031] Figure 4 This is a schematic diagram of the assembly structure of the second embodiment of the connecting structure of this application;

[0032] Figure 5 This is a perspective sectional view of the second embodiment of the connection structure of this application;

[0033] Figure 6 This is another cross-sectional perspective view of the second embodiment of the connection structure of this application;

[0034] Figure 7 This is a schematic diagram of the structure of the second embodiment of the connection structure of this application before assembly;

[0035] Figure 8 This is a perspective sectional view of the second embodiment of the connection structure of this application before assembly.

[0036] Figure label:

[0037] 1. Seat frame; 11. First positioning part; 111. Support rod; 12. Second positioning part; 13. Third positioning part; 14. Fourth positioning part; 15. First zone; 16. Second zone; 2. Backrest; 21. First limiting part; 22. Second limiting part; 23. Third limiting part; 24. Fourth limiting part; 3. Connecting piece; 4. Fastener. Detailed Implementation

[0038] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the application will be further described in detail below with reference to the accompanying drawings. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0039] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0040] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0041] In the description of this application, it should be understood that the terms "upper", "lower", "left", "right", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0042] The following detailed description of some embodiments of this application is provided in conjunction with the accompanying drawings. Unless otherwise specified, features in the following embodiments can be combined with each other.

[0043] Example 1

[0044] Please see Figure 1 and Figure 2 This is a schematic diagram of one embodiment of the leaning connection structure. The leaning connection structure includes a base 1 and a backrest 2. The base 1 has a first positioning part 11 and a second positioning part 12. The backrest 2 has a first limiting part 21 for connecting with the first positioning part 11 and a second limiting part 22 for connecting with the second positioning part 12. When the first positioning part 11 abuts against the first limiting part 21 in a first direction and the second positioning part 12 abuts against the second limiting part 22 in a second direction, the backrest 2 cannot rotate relative to the base 1, wherein the included angle between the first direction and the second direction is not zero.

[0045] Please see Figure 1The seat frame 1 is normally placed on the ground as a reference for vertical orientation. The first positioning part 11 and the first limiting part 21 are positioned by contacting inclined surfaces. The first direction is perpendicular to the contact surface of the first positioning part 11 and the first limiting part 21. The second direction can be designed to be perpendicular to the first direction or parallel to the ground, and the second direction is parallel to the length or width direction of the seat frame 1 in the sitting direction. The angle between the first direction and the second direction is between 100° and 120°, preferably 107°. The 107° tilt angle design is both aesthetically pleasing and effectively prevents the backrest 2 from tilting and swaying forward. It cleverly applies the lever fulcrum principle to make the structure more stable, and can pass a horizontal static load test of 540N in the laboratory.

[0046] Please see Figure 2 To prevent the backrest 2 from detaching from the seat frame 1 in the first direction, the seat frame 1 and the backrest 2 can be connected by a connector 3. The connector 3 can be a pin, passing through both the seat frame 1 and the backrest 2 to secure them together. When the first positioning part 11 and the first limiting part 21 are connected in the first direction, the connector 3 can prevent the backrest 2 and the seat frame 1 from moving relative to each other in a plane perpendicular to the first direction. The advantage of using a pin for the connector 3 is its simple and efficient assembly; the disadvantage is the risk of the backrest 2 detaching from the seat frame 1 due to significant external force. To reduce this risk, the connector 3 can be secured to the seat frame 1 using bolts or similar methods.

[0047] The first positioning part 11 includes a support rod 111. A first area 15 is provided between the support rod 111 and the second positioning part 12 in the first direction, and a second area 16 is provided between the support rod 111 and the second positioning part 12 in the second direction. When the first positioning part 11 is connected to the first limiting part 21 in the first direction, the support rod 111 abuts against the second limiting part 22. The second limiting part 22 is located within the space enclosed by the first area 15 and the second area 16 and abuts against the second positioning part 12. The support rod 111 can be connected to the base frame 1 and the first positioning part 11 by a mortise and tenon structure, or it can be fixedly connected as a whole by fasteners or adhesive bonding. The fasteners can be rivets, screws, or bolts.

[0048] By adopting the above technical solution, the first zone 15 and the second zone 16 can both restrict the degree of freedom of the support frame 2 relative to the seat frame 1 and facilitate the disassembly and assembly of the support frame 2 relative to the seat frame 1. When the support frame 2 is subjected to a leaning force, the support rod 111 forms a fulcrum and the second positioning part 12 forms a resistance point, thereby forming a lever effect, and the support frame 2 can withstand a large leaning force.

[0049] The advantage of this embodiment is that by inserting the support frame 2 and the seat frame 1 together, quick assembly and disassembly can be achieved, which improves the efficiency of product production and assembly, reduces the space occupied by the product during transportation, and also improves the efficiency of after-sales disassembly and replacement services.

[0050] Example 2

[0051] Please see Figures 3-8 The difference from Embodiment 1 is that the seat 1 also has a third positioning part 13 and a fourth positioning part 14, and the backrest 2 has a third limiting part 23 and a fourth limiting part 24.

[0052] Please see Figures 3-6 The seat frame 1 has a third positioning part 13, and the backrest 2 has a third limiting part 23. When the first positioning part 11 is connected to the first limiting part 21 in the first direction, and the second positioning part 12 is connected to the second limiting part 22 in the second direction, the third positioning part 13 is connected to the third limiting part 23 in a third direction, wherein the angle between the third direction and the first and second directions is not zero. When the first positioning part 11 abuts against the first limiting part 21 in the first direction, the second positioning part 12 abuts against the second limiting part 22 in the second direction, and the third positioning part 13 abuts against the third limiting part 23 in a third direction, the third positioning part 13 and the third limiting part 23 can prevent the backrest 2 from moving relative to the seat frame 1 in the first and third directions.

[0053] With the base 1 normally placed on the ground as a reference, the third direction is perpendicular to the ground. Alternatively, the angle between the third direction and the first direction can be designed to be smaller than the angle between the first direction and the ground normal, or the angle between the third direction and the first direction can be larger than the angle between the first direction and the ground normal. The optimal solution is that the third direction is perpendicular to the ground.

[0054] The third limiting part 23 is connected to the second limiting part 22 in a U-shape and is fixedly connected to the support frame 2 as a whole. The first positioning part 11 and the second positioning part 12 are fixedly connected to the support frame 1 as a whole. The third positioning part 13 and the second positioning part 12 can be fixedly connected, can be designed as a whole, or can be fixedly connected to the support frame 1 separately.

[0055] Please see Figure 3 and Figure 4When the backrest 2 is subjected to a leaning force, the support rod 111 forms a fulcrum, and the second positioning part 12 forms a resistance point, thus creating a lever effect. Combined with the resistance of the third positioning part 13 and the third limiting part 23, the backrest 2 can withstand a large leaning force. To make the connection between the backrest 2 and the seat frame 1 more stable, the seat frame 1 also has a fourth positioning part 14, and the backrest 2 has a fourth limiting part 24 that cooperates with the fourth limiting part 24. When the first positioning part 11 and the first limiting part 21 are connected in the first direction, the fourth positioning part 14 and the fourth limiting part 24 are inserted and engaged in the fourth direction, forming an angle with the first direction. With the seat frame 1 normally placed on the ground as a reference, the fourth direction is perpendicular to the ground. During assembly, the backrest 2 is inserted into the corresponding position of the seat frame 1 along the fourth direction, so that the fourth positioning part 14 and the fourth limiting part 24 are inserted until the first positioning part 11 and the first limiting part 21 abut. In this embodiment, the first limiting part 21 is a protrusion and the first positioning part 11 is a groove that cooperates with the protrusion. In actual application, the first limiting part 21 can also be designed as a groove and the first positioning part 11 can be designed as a protrusion structure.

[0056] To make the connection structure more stable, a fastener 4 can be provided, which securely connects the second limiting part 22 to the base 1. The fastener 4 can be a pin, which passes through the base 1 and the second limiting part 22 to fix them together. The advantage of using a pin for the fastener 4 is that assembly is simple and efficient, but the disadvantage is that there is a risk of the backrest 2 detaching from the base 1 due to significant external force. To reduce the risk of the backrest 2 detaching from the base 1, the fastener 4 can be bolts or other methods to securely connect the base 1 and the second limiting part 22.

[0057] The above connecting mechanisms can be combined to form different leaning connection structures. Please refer to [link / reference]. Figure 7 and Figure 8 This design omits the fourth positioning part 14 and the fourth limiting part 24. This design facilitates disassembly and assembly and prevents the backrest 2 from detaching from the seat frame 1. To disassemble or assemble the backrest 2, it must be rotated forward towards the seat frame 1 to disengage the third limiting part 23 from the third positioning part 13 before being removed upwards. This disassembly and assembly direction is opposite to the normal force direction of the backrest 2, thus reducing the probability of accidental detachment between the backrest 2 and the seat frame 1. The structure is reliable and disassembly and assembly are simple and quick.

[0058] Example 3

[0059] This embodiment provides a piece of furniture, specifically a chair, sofa, or bed, employing the leaning connection structure described in any of the above embodiments. Furniture using the first aspect of the leaning connection structure facilitates the disassembly of the backrest 2, promotes standardized design of the backrest 2, and is beneficial for the combined application of different backrests 2. The backrest 2 can be the backrest of a sofa or bed, or the armrest of a sofa or chair. Through standard interfaces, different combinations of the seat frame 1 with different armrests and backrests can be achieved, resulting in various specifications of combinations. Different combinations of the backrest 2 and seat frame 1 can produce products of different specifications to meet the functional and aesthetic needs of different consumers.

[0060] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes, modifications, substitutions, and variations can be made to the present invention without departing from its spirit and scope, and all such changes, modifications, substitutions, and variations fall within the scope of the present invention as claimed.

Claims

1. A leaning connection structure, comprising a base (1) and a support (2), characterized in that, The seat frame (1) has a first positioning part (11) and a second positioning part (12), and the backrest (2) has a first limiting part (21) for connecting with the first positioning part (11) and a second limiting part (22) for connecting with the second positioning part (12). When the first positioning part (11) is connected to the first limiting part (21) in a first direction and the second positioning part (12) is connected to the second limiting part (22) in a second direction, the backrest (2) cannot rotate relative to the seat frame (1), wherein the included angle between the first direction and the second direction is not zero. The first positioning part (11) includes a support rod (111). A first area (15) is provided between the support rod (111) and the second positioning part (12) in the first direction, and a second area (16) is provided between the support rod (111) and the second positioning part (12) in the second direction. When the first positioning part (11) is connected to the first limiting part (21) in the first direction, the support rod (111) abuts against the second limiting part (22), and the second limiting part (22) is located in the space enclosed by the first area (15) and the second area (16).

2. The leaning connection structure according to claim 1, characterized in that, The angle between the first direction and the second direction ranges from 100° to 120°.

3. The leaning connection structure according to claim 1, characterized in that, The seat (1) has a third positioning part (13), and the backrest (2) has a third limiting part (23). When the first positioning part (11) is connected to the first limiting part (21) in a first direction, and the second positioning part (12) is connected to the second limiting part (22) in a second direction, the third positioning part (13) is connected to the third limiting part (23) in a third direction, wherein the angle between the third direction and the first direction and the second direction is not zero.

4. The leaning connection structure according to claim 3, characterized in that, When the first positioning part (11) is connected to the first limiting part (21) in the first direction, the second positioning part (12) is connected to the second limiting part (22) in the second direction, and the third positioning part (13) is connected to the third limiting part (23) in the third direction, the third positioning part (13) and the third limiting part (23) prevent the backrest (2) from moving relative to the seat frame (1) in the first direction and the third direction.

5. The leaning connection structure according to claim 2 or 3, characterized in that, It also includes a fastener (4), and the second limiting part (22) is fixedly connected to the frame (1) by the fastener (4).

6. The leaning connection structure according to claim 1, characterized in that, It also includes a connector (3), which prevents the backrest (2) and the seat (1) from moving relative to each other in a plane perpendicular to the first direction when the first positioning part (11) and the first limiting part (21) are connected in the first direction.

7. The leaning connection structure according to claim 1, characterized in that, The seat (1) has a fourth positioning part (14), and the backrest (2) has a fourth limiting part (24). When the first positioning part (11) and the first limiting part (21) are connected in the first direction, the fourth positioning part (14) and the fourth limiting part (24) are inserted and engaged in the fourth direction, and the fourth direction forms an angle with the first direction.

8. The leaning connection structure according to claim 3, characterized in that, The third limiting part (23) is connected to the second limiting part (22) in a U-shape, and the first positioning part (11) and the second positioning part (12) are fixedly connected.

9. A type of furniture, characterized in that, Includes the leaning connection structure as described in any one of claims 1-8.

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