Detachable sofa

Abstract

The utility model belongs to the technical field of sofa structures, and particularly relates to a detachable sofa. According to the detachable sofa provided by the utility model, the supporting transverse plate unit, the backrest plate, the cushion plate and the upward extending plate unit are arranged on the armrest frame unit, so that 1, the upward extending plate unit can reinforce the convex upper part of the backrest plate on the armrest frame unit; it is guaranteed that the upper portion of the backrest plate is not prone to backward bending deformation or cracking; 2, the armrest frame unit can provide relatively high supporting strength through a closed frame structure of the armrest frame unit;

Description

Technical Field

[0001] The utility model belongs to the technical field of sofa structures, and particularly relates to a detachable sofa. Background Art

[0002] For common existing detachable sofas, their structural components generally include: two armrest boards, one seat-back integrated support board with a generally "L-shaped" outline, and the soft-packing material on the above-mentioned support board. Among them, the two sides of the above-mentioned support board are respectively screwed to the two armrest boards, so as to achieve sufficient support effect of the sofa on people.

[0003] On the other hand, several cross boards can also be arranged between the two armrest boards as required to reinforce the connection of the armrest boards and share the pressure on the support board.

[0004] Among them, the materials of the above-mentioned armrest boards and cross boards are generally wood, the material of the above-mentioned support board is generally high-strength steel, and the above-mentioned soft-packing material is generally various sponges or foaming materials.

[0005] For example, the Chinese utility model patent with the authorization announcement number of CN2238582 and the authorization announcement date of October 30, 1996, discloses a multifunctional armchair, which includes armrests, a backrest frame, and a seat surface frame. The armrests also serve as a support and are in a "U" shape. The backrest frame and the seat surface frame are frames made of metal pipes, and the two frames are sleeved with each other and fixed with screws after being sleeved. The connection form between the two armrests and the backrest frame and the seat surface frame is a threaded connection.

[0006] The general advantages of the multifunctional armchair in this utility model patent are as follows: it can be transported in disassembled parts, occupies little space, the connection form is simple, users can assemble it by themselves, the armrests that also serve as a support have good elasticity and are very comfortable.

[0007] However, during the actual use of this multifunctional armchair, there are at least the following two deficiencies, which are also the technical problems to be solved by the present utility model, that is:

[0008] First, the upper part of the backrest frame structure is far from the armrest and is not directly connected to the armrest. Therefore, the support strength at this part is entirely provided by the structural strength of the backrest frame itself, which is far from enough, and harmful accidents such as deformation and cracking of the backrest frame are likely to occur at this part;

[0009] Second, the shape of the armrest structure is in a "U" shape. Although it has enough elasticity, its support strength is relatively low. When a user with a relatively large body weight sits down, it is easy to break it.

[0010] Therefore, in summary, there is an urgent need for a new type of detachable sofa product with a fully connected backrest structure and armrest structure and relatively large support strength of the armrest structure. Content of the Utility Model

[0011] The utility model provides a detachable sofa. By arranging a support cross-plate unit, a backrest plate, a seat cushion plate, and an upward extension plate unit on the armrest frame unit, the following effects can be achieved: 1. The upward extension plate unit can reinforce the protruding upper part of the backrest plate on the armrest frame unit, ensuring that the upper part of the backrest plate is not easily bent backward, deformed, or cracked; 2. The armrest frame unit can provide relatively high support strength through its closed frame structure.

[0012] The technical solution adopted by the utility model to solve the above problems is as follows: A detachable sofa, the structure of which includes an armrest frame unit, a support cross-plate unit arranged on the armrest frame unit, a backrest plate arranged on the armrest frame unit, a seat cushion plate arranged on the support cross-plate unit and connected to the backrest plate, and an upward extension plate unit arranged on the armrest frame unit and connected to the backrest plate.

[0013] A further preferred technical solution lies in that: The armrest frame unit includes an armrest plate, a bottom plate, a front support plate arranged on the armrest plate and the bottom plate, located on the side away from the backrest plate, and used for installing the support cross-plate unit, a connecting plate arranged on the armrest plate and the bottom plate, located on the side close to the backrest plate, and used for installing the backrest plate, and a rear support plate arranged on the bottom plate.

[0014] A further preferred technical solution lies in that: The support cross-plate unit includes a cross-plate with an end face arranged on the front support plate and used for supporting the seat cushion plate.

[0015] A further preferred technical solution lies in that: The upward extension plate unit includes a vertical plate arranged on the upper end face of the connecting plate and used for fixing the backrest plate.

[0016] A further preferred technical solution lies in that: The armrest frame unit further includes a frame body bolt arranged on the front support plate and used for installing the cross-plate.

[0017] A further preferred technical solution lies in that: The armrest frame unit further includes a connecting bolt arranged on the connecting plate and used for installing the backrest plate.

[0018] A further preferred technical solution lies in that: The support cross-plate unit further includes a clamping groove arranged on the cross-plate, and a detachable nut arranged in the clamping groove and used for connecting the frame body bolt.

[0019] A further preferred technical solution lies in that: The armrest frame unit further includes a positioning groove arranged on the front support plate and used for clamping the end face of the cross-plate.

[0020] A further preferred technical solution is that: the upward extension plate unit further includes a reinforcing bolt disposed on the vertical plate and used for connecting the backrest plate.

[0021] A further preferred technical solution is that: the upward extension plate unit further includes a protruding block disposed on the lower end surface of the vertical plate and used for inserting the connecting plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic structural diagram of the present utility model.

[0023] Figure 2 It is a schematic structural diagram of the armrest frame unit in the present utility model.

[0024] Figure 3 It is a schematic diagram of the position of the frame body bolt in the present utility model.

[0025] Figure 4 It is a schematic structural diagram of the support cross plate unit in the present utility model.

[0026] Figure 5 It is a schematic diagram of the usage mode of the engaging groove in the present utility model.

[0027] Figure 6 It is a schematic diagram of the position and shape of the positioning groove in the present utility model.

[0028] Figure 7 It is a schematic diagram of the position of the protruding block in the present utility model.

[0029] Figure 8 It is a schematic diagram of one of the shapes of the connecting plate in the present utility model.

[0030] Figure 9 It is a schematic diagram of the connection mode between the backrest plate and the seat cushion plate in the present utility model.

[0031] Figure 10 It is a schematic structural diagram of the vertical plate in the present utility model.

[0032] In the figure, the meanings of the various marks are as follows:

[0033] Armrest frame unit 1, support cross plate unit 2, backrest plate 3, seat cushion plate 4, upward extension plate unit 5;

[0034] Armrest plate 101, bottom plate 102, front end support plate 103, connecting plate 104, rear end support plate 105, cross plate 201, vertical plate 501, frame body bolt 106, connecting bolt 107, engaging groove 202, detachable nut 203, positioning groove 108, reinforcing bolt 502, protruding block 503. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0035] The following is only a preferred embodiment of the present utility model, and does not limit the scope of the present utility model.

[0036] As shown in the Figures 1-10 accompanying drawings, a detachable sofa has a structure including an armrest frame unit 1, a support cross plate unit 2 disposed on the armrest frame unit 1, a backrest plate 3 disposed on the armrest frame unit 1, a seat cushion plate 4 disposed on the support cross plate unit 2 and connecting the backrest plate 3, and an upward extension plate unit 5 disposed on the armrest frame unit 1 and connecting the backrest plate 3.

[0037] In this embodiment, the main materials of the armrest frame unit 1, the support cross plate unit 2, and the upward extension plate unit 5 are wood, and the main materials of the backrest plate 3 and the seat cushion plate 4 are steel and soft packaging materials.

[0038] Among them, the number of both the armrest frame unit 1 and the upward extension plate unit 5 is 2, and the number of the support cross plate unit 2, the backrest plate 3, and the seat cushion plate 4 is 1. The backrest plate 3 and the seat cushion plate 4 are connected by embedded nuts and after-installed bolts.

[0039] So far, the shapes of the armrest frame unit 1, the support cross plate unit 2, the backrest plate 3, and the seat cushion plate 4 are all planar, while the shape of the upward extension plate unit 5 is rod-shaped. Therefore, the packaging structure of this detachable sofa has the advantage of being flattened, which can greatly reduce the transportation cost.

[0040] On the other hand, when the user installs this detachable sofa, the general steps are as follows:

[0041] First, connect the backrest plate 3 and the seat cushion plate 4 to form the L-shaped main structure of the sofa;

[0042] Second, install 2 of the armrest frame units 1 at both ends of the support cross plate unit 2 respectively to form the frame structure of the sofa;

[0043] Third, place the above L-shaped main structure on the above frame structure first, and then connect the support cross plate unit 2 and the backrest plate 3;

[0044] Fourth, install the upward extension plate unit 5 on the support cross plate unit 2 first, and then connect the upward extension plate unit 5 and the backrest plate 3 until the installation of the 2 upward extension plate units 5 is completed respectively.

[0045] So far, the upward extension and connection reinforcement functions of the upward extension plate unit 5 have sufficiently reinforced the upper part of the backrest plate 3, which was originally prone to backward deformation and bending, avoiding harmful accidents such as cracking at this location. The closed frame structure of the armrest frame unit 1 itself enables it to provide sufficient support strength, ensuring that the detachable sofa has a large safe load-bearing capacity.

[0046] It should be noted that the seat cushion plate 4 and the support cross plate unit 2 may not be connected. As long as the former is pressed on the latter, it can ensure that the seat cushion plate 4 together with the entire above-mentioned L-shaped main structure already has sufficient installation stability.

[0047] The armrest frame unit 1 includes an armrest plate 101, a bottom plate 102, a front support plate 103 disposed on the armrest plate 101 and the bottom plate 102, located on the side away from the backrest plate 3 and used for installing the support cross plate unit 2, a connecting plate 104 disposed on the armrest plate 101 and the bottom plate 102, located on the side close to the backrest plate 3 and used for installing the backrest plate 3, and a rear support plate 105 disposed on the bottom plate 102.

[0048] In this embodiment, the armrest plate 101, the bottom plate 102, the front support plate 103, the connecting plate 104, and the rear support plate 105 are assembled in sequence, for example, by mortise and tenon connection, finally obtaining a closed frame structure with sufficient stability and a generally rectangular shape.

[0049] On the other hand, on the premise of fully considering the wood cost and assembly efficiency, the above five plates can also be set as an integral plate structure as needed. For example, the bottom plate 102 and the rear support plate 105 can be a whole piece of wood board.

[0050] Finally, chamfers can be set as needed at the joints between the armrest plate 101, the bottom plate 102, the front support plate 103, the connecting plate 104, and the rear support plate 105, as well as at the bending and end parts of each plate body, thereby improving the use comfort of the detachable sofa.

[0051] The support cross plate unit 2 includes a cross plate 201 whose end face is disposed on the front support plate 103 and is used for supporting the seat cushion plate 4.

[0052] In this embodiment, the cross plate 201 is rectangular in shape and is located at the front end of the detachable sofa. Among them, the above front end is defined as the end of the detachable sofa away from the backrest plate 3. Correspondingly, the installation end of the backrest plate 3 is the rear end.

[0053] The upward extension plate unit 5 includes a vertical plate 501 disposed on the upper end face of the connecting plate 104 and used for fixing the backrest plate 3.

[0054] In this embodiment, the vertical plate 501 is in the shape of a rod or a strip, and the height of its upper end face is slightly lower than the height of the upper surface of the backrest plate 3.

[0055] On the other hand, considering the overall support of the user's back, the vertical dimension of the backrest plate 3 is relatively large. However, if the position of the armrest plate 101 is too high, the comfort when supporting the user's arm is insufficient. Therefore, the armrest plate 101 together with the connecting plate 104 are both relatively low in height.

[0056] At this time, the height of the upper end face of the connecting plate 104 is only located in the approximately central area of the backrest plate 3. Therefore, the relatively upper part of the backrest plate 3 is relatively independent, the connection is unstable, and harmful phenomena such as backward bending, deformation and cracking are likely to occur. So conversely, this is the function of the vertical plate 501.

[0057] Among them, the lower end of the vertical plate 501 is connected to the connecting plate 104, and its main body is connected to the relatively upper part of the backrest plate 3, finally ensuring that the backrest plate 3 can obtain a relatively comprehensive and stable overall installation effect.

[0058] The armrest frame unit 1 further includes a frame body bolt 106 that is arranged on the front end support plate 103 and is used for installing the cross plate 201.

[0059] In this embodiment, the height of the seat cushion plate 4 is generally flush with the bottom plate 102. Therefore, the height of the cross plate 201 together with the frame body bolt 106 is slightly lower than the bottom plate 102.

[0060] Among them, the number of the frame body bolts 106 is 4, and they are respectively arranged in two on the two front end support plates 103 to be used for installing the two ends of the cross plate 201.

[0061] Correspondingly, the front end support plate 103 is provided with an opening for installing the frame body bolt 106. This opening can be a countersunk hole, so that the head of the frame body bolt 106 does not protrude, improving the safety and comfort of this detachable sofa.

[0062] The armrest frame unit 1 further includes a connecting bolt 107 that is arranged on the connecting plate 104 and is used for installing the backrest plate 3.

[0063] In this embodiment, the number, shape and usage method of the connecting bolt 107 are the same as those of the frame body bolt 106.

[0064] In addition, nuts for installing the connecting bolts 107 are welded and embedded on the steel structure frame of the backrest plate 3. Specifically, the steel structure frames of the backrest plate 3 and the seat cushion plate 4 are both in the shape of an open box. The opening of the former faces backward, and the opening of the latter faces downward. When assembling, only their respective steel structure frames need to be connected.

[0065] The support cross-plate unit 2 further includes a clamping groove 202 provided on the cross-plate 201, and a detachable nut 203 provided in the clamping groove 202 and used for connecting the frame bolt 106.

[0066] In this embodiment, the clamping groove 202 is provided on the rear-facing side (non-exposed side) of the cross-plate 201. Its vertical slot size and horizontal slot size are slightly larger than the corresponding sizes of the detachable nut 203, ensuring that after the detachable nut 203 is inserted and installed, it will not rotate together with the screwing action of the frame bolt 106, otherwise the installation of the frame bolt 106 will fail. Therefore, the contour shape of the detachable nut 203 can be square or regular hexagon.

[0067] Correspondingly, a through hole for installing the frame bolt 106 is further provided between the clamping groove 202 and the end face of the cross-plate 201. The diameter of this through hole is slightly larger than the rod diameter of the frame bolt 106.

[0068] The armrest frame unit 1 further includes a positioning groove 108 provided on the front-end support plate 103 and used for clamping the end face of the cross-plate 201.

[0069] In this embodiment, the shape of the positioning groove 108 is rectangular, and its depth is relatively small, for example, 1 - 3 mm, in order to avoid significantly reducing the structural strength of the front-end support plate 103.

[0070] In addition, when the cross-plate 201 is installed, as long as it is clamped and docked with the positioning groove 108, the bolt holes on the cross-plate 201 and the bolt holes on the front-end support plate 103 will surely be aligned, enabling the frame bolt 106 to be quickly inserted and installed.

[0071] The upward extension plate unit 5 further includes a reinforcing bolt 502 provided on the vertical plate 501 and used for connecting the backrest plate 3.

[0072] In this embodiment, one way to reinforce and connect the vertical plate 501 to the backrest plate 3 is by screwing, that is, through the above-mentioned reinforcing bolt 502.

[0073] So far, at least 3 nuts need to be provided on one side's vertical edge of the backrest plate 3 for installing 2 connecting bolts 107 and 1 reinforcing bolt 502.

[0074] The upwardly extending plate unit 5 further includes a protruding block 503 disposed on the lower end surface of the vertical plate 501 and used for inserting the connecting plate 104.

[0075] In this embodiment, one of the assembly methods of the vertical plate 501 and the connecting plate 104 is mortise and tenon connection, that is, through the above-mentioned protruding block 503. At this time, a mortise matching therewith is provided on the upper end surface of the connecting plate 104.

[0076] On the other hand, the above-mentioned "tenon" structure can also be provided on the connecting plate 104, and a "mortise" structure is opened on the lower end surface of the vertical plate 501. For details, reference can be made to the appendix Figure 8 .

[0077] Finally, there are many different positions to choose from when specifically determining the demarcation line between the armrest plate 101 and the connecting plate 104. Therefore, the upper end surface of the connecting plate 104 can also be the upper surface of the armrest plate 101.

[0078] The embodiments of the present invention have been described in detail above in conjunction with the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those of ordinary skill in the art, various modifications can be made without departing from the gist of the present invention. These are all non-creative modifications and are protected by the Patent Law as long as they are within the scope of the claims of the present invention.

Claims

1. A detachable sofa, characterized in that: The structure comprises an armrest frame unit (1), a supporting transverse plate unit (2) arranged on the armrest frame unit (1), a backrest plate (3) arranged on the armrest frame unit (1), a seat cushion plate (4) arranged on the supporting transverse plate unit (2) and connected to the backrest plate (3), and an upwardly extending plate unit (5) arranged on the armrest frame unit (1) and connected to the backrest plate (3).

2. The detachable sofa according to claim 1, characterized in that: The armrest frame unit (1) comprises an armrest plate (101), a base plate (102), a front end support plate (103) arranged on the armrest plate (101) and the base plate (102) and located on a side away from the backrest plate (3) and used for mounting the supporting cross plate unit (2), a connecting plate (104) arranged on the armrest plate (101) and the base plate (102) and located on a side close to the backrest plate (3) and used for mounting the backrest plate (3), and a rear end support plate (105) arranged on the base plate (102).

3. The detachable sofa according to claim 2, characterized in that: The supporting transverse plate unit (2) comprises a transverse plate (201) whose end surface is arranged on the front end supporting plate (103) and is used to support the cushion plate (4).

4. The detachable sofa according to claim 2, characterized in that: The upwardly extending plate unit (5) comprises a vertical plate (501) which is arranged on the upper end surface of the connecting plate (104) and is used to fix the backrest plate (3).

5. The detachable sofa according to claim 3, characterized in that: The handrail frame unit (1) also includes a frame bolt (106) arranged on the front end support plate (103) and used for mounting the cross plate (201).

6. The detachable sofa according to claim 2, characterized in that: The armrest frame unit (1) further comprises connecting bolts (107) which are arranged on the connecting plate (104) and are used for mounting the backrest plate (3).

7. The detachable sofa according to claim 5, characterized in that: The supporting transverse plate unit (2) further comprises a snap-fitting groove (202) arranged on the transverse plate (201), and a detachable nut (203) arranged in the snap-fitting groove (202) and used for connecting the frame body bolt (106).

8. The detachable sofa according to claim 3, characterized in that: The armrest frame unit (1) further comprises a positioning groove (108) provided on the front end support plate (103) and used for engaging with the end surface of the transverse plate (201).

9. The detachable sofa according to claim 4, characterized in that: The upwardly extending plate unit (5) further comprises a reinforcing bolt (502) which is arranged on the vertical plate (501) and is used to connect the backrest plate (3).

10. The detachable sofa according to claim 4, characterized in that: The upwardly extending plate unit (5) further comprises a protruding block (503) arranged on the lower end surface of the vertical plate (501) and used for plugging into the connecting plate (104).

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