A detachable chair back and a seat comprising the same

Abstract

The utility model discloses a detachable chair back and seat including the chair back, include: headrest, backrest, waist rest, cushion, handrail, chair leg, the chair back includes: chair back upper chord, the upper end of chair back upper chord respectively to the chair back side extension formation two upper end extension, the lower end of chair back upper chord forms the insertion part, two the upper end extension and chair back upper chord all are equipped with with the connecting portion who connects with the external backrest, chair back lower chord, the upper end of chair back lower chord forms the insertion slot, the insertion part can match and insert the insertion slot, the lower end of chair back lower chord respectively to the chair back side extension formation two lower end extension, chair back lower chord is equipped with with the connecting portion who connects with the waist rest. Use the utility model, through the design of insertion part and insertion slot, and the detachable connection of chair back upper chord and chair back lower chord is convenient.

Description

Technical Field

[0001] This utility model relates to the technical field of furniture and office supplies, and in particular to a detachable chair back and a seat including the chair back. Background Technology

[0002] The market offers an increasing variety of chairs, with consumers placing greater emphasis on functionality alongside aesthetics. Existing chairs typically consist of a combination of headrests, backrests, lumbar supports, seat cushions, armrests, legs, and backrest beams. However, existing backrest beams are usually separate, resulting in a larger size and increased transportation and molding costs. Furthermore, the length of separate backrest beams contributes to a higher production error rate. Utility Model Content

[0003] In view of this, the purpose of this utility model is to provide a detachable chair back and a seat including the chair back.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0005] A detachable chair back includes: an upper backrest beam, the upper ends of which extend toward the chair back to form two upper extension portions, and the lower ends of which form insertion portions; both upper extension portions and the upper backrest beam are provided with connecting portions for connection to an external backrest; a lower backrest beam, the upper ends of which form insertion grooves, and the insertion portions are compatiblely inserted into the insertion grooves; the lower ends of the lower backrest beam extend toward the chair back to form two lower extension portions; and the lower backrest beam is provided with connecting portions for connection to a lumbar support.

[0006] In the aforementioned detachable chair back, the insertion part forms a buckle on the end face facing the side of the chair back; the insertion slot has an opening on the end face facing the side of the chair back, and the buckle can be matched and locked into the opening.

[0007] In the aforementioned detachable chair back, the latch is a spring-loaded latch.

[0008] In the aforementioned detachable chair back, the buckle is in the form of an inverted triangle.

[0009] In the aforementioned detachable chair back, the insertion part forms a vertical groove on the end face opposite to the chair back; the insertion groove forms a vertical retaining strip on the end face opposite to the chair back, and the retaining strip can be slidably disposed in the groove.

[0010] In the aforementioned detachable chair back, the area of ​​the end face of the insertion part facing the chair back is smaller than the area of ​​the end face facing away from the chair back; the height of the end face of the insertion slot facing the chair back is lower than the height of the end face facing away from the chair back.

[0011] In the aforementioned detachable chair back, the end face of the insertion part facing away from the chair back is arc-shaped, and the end face of the insertion slot facing away from the chair back is arc-shaped.

[0012] In the aforementioned detachable chair back, the two lower extension portions are provided with connecting portions for connection to an external seat cushion.

[0013] A chair includes: a headrest, a backrest, a lumbar support, a seat cushion, armrests, and chair legs; wherein, it further includes: an upper backrest beam and a lower backrest beam, wherein the upper backrest beam and the lower backrest beam are detachable backrests as described above; the headrest is connected to the backrest beam, the backrest beam is connected to the connecting portion of the upper backrest beam and the two upper extensions respectively, the insert portion is compatiblely inserted into the insert slot, the lumbar support beam is connected to the connecting portion of the lower backrest beam, the seat cushion and the armrests are connected to the two lower extensions respectively, and the chair legs are connected to the seat cushion.

[0014] Because this utility model employs the aforementioned technology, it has the following positive effects compared to existing technologies:

[0015] (1) The upper and lower beams of the chair back are produced, packaged and transported independently, which reduces production costs, packaging size and transportation volume.

[0016] (2) The upper and lower back beams of the chair back are produced independently, which reduces the production error rate and eliminates the need to scrap the entire chair back beam at the same time.

[0017] (3) The design of the insertion part and the insertion slot facilitates the detachable connection of the upper beam and the lower beam of the chair back.

[0018] (4) The design of the buckle and the opening makes it easy for the buckle to be locked in the opening, reducing the shaking between the upper beam and the lower beam of the chair back.

[0019] (5) The design of the clip and groove can play an auxiliary positioning role in inserting the insertion part into the insertion slot.

[0020] (6) The area of ​​the end face of the insertion part facing the back of the chair is smaller than the area of ​​the end face facing away from the back of the chair, and the height of the end face of the insertion slot facing the back of the chair is lower than the height of the end face facing away from the back of the chair, which effectively increases the contact area of ​​the insertion part and the insertion slot facing away from the back of the chair, ensuring the stability of both. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the installation of a detachable chair back according to this utility model;

[0022] Figure 2 This is a schematic diagram of the installation of a detachable chair back according to this utility model from another angle;

[0023] Figure 3 This is a schematic diagram of a detachable chair back according to the present invention;

[0024] Figure 4 This is an installation diagram of a seat according to this utility model;

[0025] Figure 5 This is a schematic diagram of a seat according to the present invention.

[0026] In the attached diagram: 1. Upper backrest beam; 11. Upper extension; 12. Insertion part; 13. Connecting part; 14. Buckle; 15. Groove; 16. Connecting part; 2. Lower backrest beam; 21. Lower extension; 22. Insertion groove; 23. Connecting part; 24. Opening; 25. Locking strip; 26. Connecting part; 3. Headrest; 4. Backrest; 5. Lumbar support; 6. Seat cushion; 7. Armrest; 8. Chair legs. Detailed Implementation

[0027] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0028] Please see Figures 1 to 3 The diagram shows a preferred embodiment of a detachable chair back, comprising: an upper backrest beam 1 and a lower backrest beam 2. The upper end of the upper backrest beam 1 extends towards the chair back to form two upper extension portions 11, and the lower end of the upper backrest beam 1 forms an insertion portion 12. Both the two upper extension portions 11 and the upper backrest beam 1 are provided with connecting portions 16 and 13 for connection to an external backrest 4. The upper end of the lower backrest beam 2 forms an insertion groove 22, and the insertion portion 12 of the upper backrest beam 1 can be fitted into the insertion groove 22 of the lower backrest beam 2, thereby enabling the upper backrest beam 1 and the lower backrest beam 2 to form a single unit. The lower end of the lower backrest beam 2 extends towards the chair back to form two lower extension portions 21, and the lower backrest beam 2 is provided with a connecting portion 23 for connection to a lumbar support 5.

[0029] Based on the above, this utility model also has the following embodiments:

[0030] Furthermore, as a preferred embodiment, please continue to refer to... Figures 1 to 3 As shown, the upper back beam 1 is a Y-shaped strip when viewed from the back of the chair, and it is curved when viewed from the side, that is, the two upper extensions 11 are curved towards the back of the chair relative to the main body of the upper back beam 1.

[0031] Furthermore, in a preferred embodiment, the lower back beam 2 is an inverted "Y" shaped strip when viewed from the backrest side, and is curved when viewed from the side, that is, the two lower extensions 21 are curved toward the backrest side relative to the main body of the lower back beam 2.

[0032] Furthermore, in a preferred embodiment, the insertion portion 12 forms a latch 14 on the end face opposite the backrest side.

[0033] Furthermore, in a preferred embodiment, the insertion slot 22 has an opening 24 on the end face opposite to the backrest side, the insertion part 12 is inserted into the insertion slot 22, and the buckle 14 is matched and locked in the opening 24, thereby fixing the upper backrest beam 1 and the lower backrest beam 2.

[0034] Furthermore, in a preferred embodiment, the latch 14 is a spring-loaded latch.

[0035] Furthermore, in a preferred embodiment, the buckle 14 is an inverted triangle. Due to the lower end of the inverted triangle and its elasticity, the buckle 14 can slide smoothly into the insertion groove 22, and then pop out into the opening 24 using its elasticity, and be locked in the opening 24 by the upper end of the buckle 14.

[0036] Furthermore, in a preferred embodiment, the insertion portion 12 has a vertical groove 15 formed on the end face opposite to the chair back.

[0037] Furthermore, in a preferred embodiment, the end face of the insertion groove 22 facing away from the chair back forms a vertical retaining strip 25, which can be slidably disposed in the groove 15, thereby facilitating the insertion part 12 to slide smoothly into the insertion groove 22 and playing a role in alignment and positioning.

[0038] Furthermore, in a preferred embodiment, the area of ​​the end face of the insertion portion 12 facing the backrest is smaller than the area of ​​the end face facing away from the backrest.

[0039] Furthermore, in a preferred embodiment, the height of the end face of the insertion groove 22 facing the chair back is lower than the height of the end face facing away from the chair back, thereby increasing the contact area between the insertion part 12 and the insertion groove 22 facing away from the chair back and ensuring the stability of both.

[0040] Furthermore, in a preferred embodiment, the end face of the insertion part 12 facing away from the chair back is arc-shaped.

[0041] Furthermore, in a preferred embodiment, the end face of the insertion slot 22 facing away from the chair back is arc-shaped. The arc-shaped design facilitates the engagement between the insertion part 12 and the insertion slot 22.

[0042] Furthermore, in a preferred embodiment, each of the two lower extensions 21 is provided with a connecting portion 26 that connects to the external seat cushion 6.

[0043] Based on the above, this utility model also has the following preferred embodiments:

[0044] Please see Figures 1 to 5 The diagram shows a preferred embodiment of a seat, comprising: a headrest 3, a backrest 4, a lumbar support 5, a seat cushion 6, armrests 7, chair legs 8, an upper backrest beam 1, and a lower backrest beam 2. The headrest 3 is connected to the backrest 4, which is connected to the connecting portion 16 of the upper backrest beam 1 and the connecting portions 13 of the two upper extensions 11, respectively. An insertion portion 12 is compatiblely inserted into an insertion slot 22. The lumbar support 5 is connected to the connecting portion 23 of the lower backrest beam 2. The seat cushion 6 and the armrests 7 are connected to the connecting portions 26 of the two lower extensions 21, respectively. The chair legs 8 are connected to the seat cushion 6.

[0045] The above description is only a preferred embodiment of the present utility model and does not limit the implementation method and protection scope of the present utility model. Those skilled in the art should realize that all solutions obtained by equivalent substitutions and obvious changes made based on the description and illustrations of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A detachable chair back, characterized in that, include: The upper end of the upper back beam extends toward the back of the chair to form two upper extension portions, and the lower end of the upper back beam forms an insertion portion. Both upper extension portions and the upper back beam are provided with a connecting portion for connecting to an external backrest. The lower backrest beam has an insertion groove at its upper end, and the insertion part can be inserted into the insertion groove. The lower end of the lower backrest beam extends toward the backrest side to form two lower end extensions. The lower backrest beam is provided with a connecting part that connects with the lumbar support.

2. The detachable chair back according to claim 1, characterized in that, The insertion part forms a latch on the end face opposite the back of the chair; The insertion slot has an opening on the end face opposite the backrest, and the buckle can be matched and locked into the opening.

3. The detachable chair back according to claim 2, characterized in that, The buckle is a spring-loaded buckle.

4. The detachable chair back according to claim 2, characterized in that, The buckle is in the shape of an inverted triangle.

5. The detachable chair back according to claim 1, characterized in that, The insertion part has a vertical groove on the end face opposite to the chair back. The end face of the insertion slot facing away from the chair back forms a vertical retaining strip, which can be slidably disposed within the groove.

6. The detachable chair back according to claim 1, characterized in that, The area of ​​the end face of the insertion part facing the back of the chair is smaller than the area of ​​the end face facing away from the back of the chair. The height of the end face of the insertion slot facing the back of the chair is lower than the height of the end face facing away from the back of the chair.

7. The detachable chair back according to claim 6, characterized in that, The end face of the insertion part facing away from the chair back is arc-shaped, and the end face of the insertion slot facing away from the chair back is arc-shaped.

8. The detachable chair back according to claim 1, characterized in that, Both of the lower extensions are provided with a connecting part for connecting to the external seat cushion.

9. A seat, comprising: The chair comprises a headrest, backrest, lumbar support, seat cushion, armrests, and chair legs; its distinguishing feature is that it also includes: The upper backrest beam and the lower backrest beam are the detachable backrests described in any one of claims 1 to 8. The headrest is connected to the backrest, the backrest is connected to the connecting part of the upper beam of the chair back and the two upper extensions respectively, the insertion part can be inserted into the insertion slot, the lumbar support is connected to the connecting part of the lower beam of the chair back, the seat cushion and the armrest are connected to the two lower extensions respectively, and the chair legs are connected to the seat cushion.

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