Component structure of chair

Abstract

The utility model discloses a component structure of a chair. The component structure comprises a bottom piece, the elastic piece is arranged on the bottom piece, a closed space is formed by the elastic piece and the bottom piece, the elastic piece is provided with a supporting side part arranged on the bottom piece and a pressed top part arranged on the supporting side part, and the supporting side part is divided into a first supporting section connected with the bottom piece and a second supporting section connected between the first supporting section and the pressed top part; after the bottom piece and the elastic piece are combined into a cushion, an armrest or a chair back, through the design that the supporting side parts of the elastic piece have different elastic moduli, after the pressed top part of the elastic piece is pressed, the elastic piece can generate nonlinear decreasing amplitude, so that the structural stability, the supporting performance and the comfort are improved.

Description

Technical Field

[0001] This utility model relates to a chair, and more particularly to a chair component structure. Background Technology

[0002] The primary function of a chair is to provide a comfortable sitting posture and support. For example... Figure 1 As shown, the chair 10 mainly comprises a seat cushion 12 on the chair legs 11, a backrest 13 on the seat cushion 12, and armrests 14 on the backrest 13. The seat cushion 12 provides a comfortable seating experience, distributes weight, and reduces pressure on the buttocks and thighs. The backrest 13 provides back support, helping to maintain correct posture and reduce back fatigue. The armrests 14 support the arms, reducing pressure on the shoulders and arms, and contributing to maintaining good posture.

[0003] However, since the seat cushion 12, backrest 13, and armrests 14 of this chair 10 currently primarily use foam as the main structural component, it suffers from problems such as poor durability, high water absorption, insufficient support, and difficulty in cleaning, thus requiring improvement. Specifically, poor durability: low-density foam is prone to deformation and collapse over time, and may deform or lose elasticity after prolonged use. High water absorption: most foam materials easily absorb water, leading to internal dampness during prolonged sitting or in humid environments, affecting comfort and hygiene. Insufficient support: low-density foam provides insufficient support, which may cause muscle fatigue and discomfort after prolonged use. Difficult cleaning: the foam surface is difficult to clean, and stains easily penetrate, affecting appearance and hygiene. Utility Model Content

[0004] The purpose of this utility model is to provide a component structure for a chair that can solve one of the above-mentioned problems.

[0005] To achieve the aforementioned objective, the present invention provides a component structure for a chair, comprising: a base; and an elastic member disposed on the base and forming a closed space with the base. The elastic member has a supporting side portion disposed on the base and a pressure-receiving top portion disposed on the supporting side. The supporting side portion is divided into a first supporting segment connecting the base and a second supporting segment connecting the first supporting segment and the pressure-receiving top. The elastic modulus of the first supporting segment is greater than that of the second supporting segment, and the elastic modulus of the second supporting segment is greater than that of the pressure-receiving top.

[0006] The utility model discloses a bottom piece and the elastic piece combination into the back cushion, handrail or chair back, through the support side of the elastic piece has the design of different elastic modulus, make the elastic piece under the pressure of the compressed top, the elastic piece can produce nonlinear amplitude of fall, to improve structural stability, support and comfort, in addition, the closed space of the utility model design, through the gas contained in the closed space as medium, the force can be evenly conducted to the overall structure of the elastic piece, thereby effectively offsetting the potential stress concentration area, further reduce the risk of material damage due to elastic fatigue.

[0007] Preferably, the thickness of the support side gradually decreases from the bottom piece towards the compressed top.

[0008] Preferably, the bottom piece has an end surface, a ring side surface connected to the end surface, and a ring recess provided between the end surface and the ring side surface. A portion of the first support section of the support side of the elastic piece is combined in the ring recess.

[0009] Preferably, a sealing member is further included, which is sealed on the outer surface of the support side and the ring side surface of the bottom piece.

[0010] Preferably, the outer surface of the support side of the elastic piece is provided with a plurality of staggered convex structures and concave structures from the bottom piece towards the compressed top.

[0011] Preferably, the first support section and the second support section of the support side of the elastic piece are both arc-shaped.

[0012] Preferably, the first support section of the support side of the elastic piece is linear, and the second support section is arc-shaped.

[0013] Preferably, the bottom piece and the elastic piece are combined into a back cushion or a handrail.

[0014] Preferably, the compressed top of the elastic piece has a compressed outer surface, and the component structure of the chair further has a reinforcing rib unit provided on the compressed outer surface of the elastic piece and formed by a plurality of reinforcing ribs.

[0015] Preferably, the compressed top of the elastic piece has a compressed inner surface, and the component structure of the chair further has a reinforcing rib unit provided on the compressed inner surface of the elastic piece and formed by a plurality of reinforcing ribs. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 is a perspective view of an existing chair;

[0017] Figure 2 is a perspective view of the first embodiment of the utility model, showing the state of the bottom piece and the elastic piece combined into a back cushion;

[0018] Figure 3 is a sectional view of the first embodiment of the present utility model;

[0019] Figure 4A is a use state schematic view of the first embodiment of the present utility model, showing the state of the force application less than the top elastic modulus of the compression;

[0020] Figure 4B is a use state schematic view of the first embodiment of the present utility model, showing the state of the force application greater than the top elastic modulus of the compression;

[0021] Figure 4C is a use state schematic view of the first embodiment of the present utility model, showing the state of the force application greater than the elastic modulus of the second support section;

[0022] Figure 4D is a use state schematic view of the first embodiment of the present utility model, showing the state of the force application greater than the elastic modulus of the first support section;

[0023] Figure 5A is a use state schematic view of the first embodiment of the present utility model, showing the stress state of the elastic member when the force is applied in the positive direction;

[0024] Figure 5B is a use state schematic view of the first embodiment of the present utility model, showing the stress state of the elastic member when the force is applied in the lateral direction;

[0025] Figure 6A is a sectional view of the second embodiment of the present utility model;

[0026] Figure 6B is a use state schematic view of the second embodiment of the present utility model, showing the stress state of the elastic member when the force is applied in the lateral direction;

[0027] Figure 7 is a sectional view of the third embodiment of the present utility model;

[0028] Figure 8 is a perspective view of the fourth embodiment of the present utility model, showing the state of the bottom member and the elastic member combined into a handrail;

[0029] Figure 9 is a perspective view of the fifth embodiment of the present utility model, showing the separated state of the reinforcing rib unit provided on the elastic member;

[0030] Figure 10 is a sectional view of the fifth embodiment of the present utility model, showing the sectional state of the reinforcing rib unit provided on the elastic member; and

[0031] Figure 11 is a sectional view of the sixth embodiment of the present utility model, showing the sectional state of the reinforcing rib unit provided on the elastic member.

[0032] 10…chair

[0033] 11…chair leg

[0034] 12…cushion

[0035] 13…chair back

[0036] 14…armrest

[0037] 20, 20B…base

[0038] 21…end surface

[0039] 22…ring side surface

[0040] 23…ring recess

[0041] 30, 30A, 30B…elastic member

[0042] 31, 31A…support side

[0043] 311, 311A…first support section

[0044] 312, 312A…second support section

[0045] 313…convex structure

[0046] 314…concave structure

[0047] 32…pressed top

[0048] 321…pressed outer surface

[0049] 322…pressed inner surface

[0050] 40…seal

[0051] 50…enclosed space

[0052] 100…cushion

[0053] 200…armrest DETAILED DESCRIPTION

[0054] Referring to Figure 2 and Figure 3 , the utility model provides a kind of component structure of chair, it is mainly composed of a base 20, an elastic member 30 and a seal 40, in the embodiment, the base 20, elastic member 30 and seal 40 are combined into cushion 100, wherein:

[0055] The base 20 is plate-shaped and made of rigid material (nylon + glass fiber or polypropylene (PP) + glass fiber or polycarbonate (PC) + acrylonitrile-butadiene-styrene (ABS)). The base 20 has an end face 21, an annular side face 22 connecting the end face 21, and an annular recess 23 provided between the end face 21 and the annular side face 22.

[0056] The elastic element 30 is made of an elastic material (polypropylene (PP), thermoplastic polyurethane (TPU), or nylon elastomer) by injection molding. The elastic element 30 is disposed on the base 20 and forms a closed space 50 with the base 20. The closed space 50 contains gas. The elastic element 30 has a supporting side 31 disposed on the base 20 and a pressure-receiving top 32 disposed on the supporting side 31. The thickness of the supporting side 31 gradually decreases from the base 20 towards the pressure-receiving top 32, and the supporting side 31 is divided into a first supporting section 311 connecting to the base 20, and... A second support segment 312 connects the first support segment 311 and the pressure-bearing top 32. Both the first support segment 311 and the second support segment 312 are arc-shaped. The first support segment 311 is partially connected to the annular recess 23 of the base member 20. In addition, the elastic modulus of the first support segment 311 is greater than that of the second support segment 312, and the elastic modulus of the second support segment 312 is greater than that of the pressure-bearing top 32. In this embodiment, the elastic modulus is a physical quantity that measures the ability of the elastic member 30 to resist deformation when subjected to force. It is defined as the ratio between stress and strain of the elastic member 30 within the elastic deformation range.

[0057] The seal 40 is annular and is chemically bonded to the base 20 and the elastic member 30. In this embodiment, the seal 40 is applied to the outer surface of the support side 31 and the annular side surface 22 of the base 20 to improve the bonding strength and sealing performance between the base 20 and the elastic member 30.

[0058] The above describes the configuration of the main components of the first embodiment of this utility model. The operation and function of this utility model are explained below.

[0059] When the user sits on the component (cushion 100) of this utility model, refer to Figure 4A As shown, when the pressure P1 applied to the elastic member 30 is less than the elastic modulus of the pressure-bearing top 32, the pressure-bearing top 32, the first support section 311, and the second support section 312 of the elastic member 30 will not deform, indicating that the cushion 100 has sufficient stability and support to withstand the pressure applied to the cushion 100 by the user.

[0060] Referring to Figure 4B As shown, when the pressure P2 applied to the elastic member 30 is greater than the elastic modulus of the pressure-receiving top 32 and less than the sum of the elastic modulus of the pressure-receiving top 32 and the second support section 312, the pressure-receiving top 32 of the elastic member 30 is deformed in bending, and the first support section 311 and the second support section 312 are not deformed, indicating that the cushion 100 has sufficient stability and support under comfort to withstand the pressure applied by a user to the cushion 100.

[0061] Referring to Figure 4C As shown, when the pressure P3 applied to the elastic member 30 is greater than the sum of the elastic modulus of the pressure-receiving top 32 and the second support section 312 and less than the sum of the elastic modulus of the pressure-receiving top 32, the second support section 312, and the first support section 311, the pressure-receiving top 32 of the elastic member 30 and the second support section 312 are deformed in bending, and the first support section 311 is not deformed, indicating that the cushion 100 is more comfortable and maintains the stability and support to withstand the pressure applied by a user to the cushion 100.

[0062] Referring to Figure 4D As shown, when the pressure P4 applied to the elastic member 30 is greater than the sum of the elastic modulus of the pressure-receiving top 32, the second support section 312, and the first support section 311, the pressure-receiving top 32, the second support section 312, and the first support section 311 of the elastic member 30 are deformed in bending, indicating that the cushion 100 is the most comfortable, and the pressure that can be withstood has approached the limit value, but still supports the weight of a user.

[0063] Referring to Figure 5A and 5B As shown, since the bottom member 20 and the elastic member 30 are combined into the cushion 100, a closed space 50 is formed, and the closed space 50 contains gas. Therefore, under the influence of Pascal's Principle, when a force is applied to the elastic member 30 in a positive direction ( Figure 5A ) or a lateral direction ( Figure 5B ), the pressure applied to the elastic member 30 is uniformly dispersed by the gas in the closed space 50.

[0064] Accordingly, the utility model discloses the bottom piece and the elastic piece are combined into the back cushion, handrail or chair back, through the support side of the elastic piece has the design of different elastic modulus, so that the elastic piece can produce nonlinear amplitude of decline under the compression of the compression top, to improve structural stability, support and comfort, in addition, the closed space designed in the utility model is matched, through the gas contained in the closed space as medium, the force can be evenly conducted to the overall structure of the elastic piece, thereby effectively offsetting the potential stress concentration area, further reducing the risk of material damage due to elastic fatigue.

[0065] It is worth mentioning that the elastic piece of the utility model is mainly made of elastic plastic, so it is not easy to deform or collapse over time, and can still maintain its elasticity even after long-term use. In addition, this elastic plastic does not absorb water, so it is not easy to cause internal dampness in long sitting or humid environment, thereby affecting comfort and hygiene. At the same time, the material has the characteristics of easy cleaning, and stains cannot penetrate, which can effectively maintain the appearance and hygiene.

[0066] Referring to Figure 6A and Figure 6B It is shown that the utility model discloses a component structure of a chair, which is different from the first embodiment in that:

[0067] The outer surface of the support side 31 of the elastic piece 30 is provided with a plurality of staggered convex structures 313 and concave structures 314 from the bottom piece 20 to the compression top 32 direction; through the design of the convex structure 313 and the concave structure 314, the elastic piece 30 will have directionality and regularity when deformed after being compressed in the positive direction ( Figure 6A ) or the lateral direction ( Figure 6B ). Specifically, the elastic piece 30 will preferentially deform from the concave structure 314, thereby avoiding irregular deformation and ensuring that comfort and support are not affected.

[0068] Referring to Figure 7 It is shown that the utility model discloses a component structure of a chair, which is different from the first embodiment in that:

[0069] The first support section 311A of the support side 31A of the elastic piece 30A is linear, and the second support section 312A is arc-shaped. Through the design of the linear first support section 311A, the overall support of the elastic piece 30A is improved.

[0070] Referring to Figure 8 It is shown that the utility model discloses a component structure of a chair, which is different from the first embodiment in that:

[0071] The bottom piece 20B and the elastic piece 30B are combined to form the armrest 200, but are not limited to this, and can also be combined to form a chair back or other components for supporting and leaning. It is worth noting that when the bonding strength of the bottom piece and the elastic piece is sufficient, the sealing piece is not required to combine the bottom piece and the elastic piece into one.

[0072] Referring to Figure 9 and Figure 10 , the fifth embodiment of the utility model provides a component structure of a chair, which is different from the first embodiment in that:

[0073] The compressed top 32 of the elastic piece 30 has a compressed outer surface 321;

[0074] The component structure of the chair also has a reinforcing rib unit 60, which is arranged on the compressed outer surface 321 of the elastic piece 30 and is formed by a plurality of reinforcing ribs 61. In this embodiment, the reinforcing rib unit 60 and the elastic piece 30 are made of the same material or different materials, and the reinforcing rib unit 60 is directly formed or additionally arranged on the elastic piece 30.

[0075] Through the design of the reinforcing rib unit 60, not only the structural strength of the compressed top 32 of the elastic piece 30 is improved, but also the concentrated deformation of the compressed top 32 of the elastic piece 30 when compressed is effectively reduced, effectively improving the comfort and stability of the seat cushion 12.

[0076] Referring to Figure 11 , the sixth embodiment of the utility model provides a component structure of a chair, which is different from the first embodiment in that:

[0077] The compressed top 32 of the elastic piece 30 has a compressed inner surface 322;

[0078] The component structure of the chair also has a reinforcing rib unit 60, which is formed on the compressed inner surface 322 of the elastic piece 30 and is formed by a plurality of reinforcing ribs 61. In this embodiment, the reinforcing rib unit 60 and the elastic piece 30 are made of the same material or different materials, and the reinforcing rib unit 60 is directly formed or additionally arranged on the elastic piece 30.

[0079] Through the design of the reinforcing rib unit 60, not only the structural strength of the compressed top 32 of the elastic piece 30 is improved, but also the concentrated deformation of the compressed top 32 of the elastic piece 30 when compressed is effectively reduced, effectively improving the comfort and stability of the seat cushion 12.

[0080] The above are only preferred embodiments of the present application, and are not used to limit the present application. For those skilled in the art, the present application can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A component structure for a chair, characterized by: A chair cushion structure comprises: a base member; a resilient member provided on the base member and forming a closed space with the base member, the resilient member having a support side provided on the base member and a pressure receiving top provided on the support side, the support side being divided into a first support section connected to the base member and a second support section connected between the first support section and the pressure receiving top, the first support section having a greater modulus of elasticity than the second support section, and the second support section having a greater modulus of elasticity than the pressure receiving top.

2. The chair component structure of claim 1, wherein: The thickness of the support side gradually decreases from the base member toward the pressure receiving top.

3. The chair component structure of claim 1, wherein: The base member has an end surface, a ring side surface connected to the end surface, and a ring recess provided between the end surface and the ring side surface, and a portion of the first support section of the support side of the resilient member is combined in the ring recess.

4. The chair component structure of claim 3, wherein: A sealing member is further included, which is provided on the outer surface of the support side and the ring side surface of the base member.

5. The chair component structure of claim 1, wherein: The outer surface of the support side of the resilient member is provided with a plurality of alternating convex and concave structures from the base member toward the pressure receiving top.

6. The chair component structure of claim 1, wherein: The first support section and the second support section of the support side of the resilient member are both arc-shaped.

7. The chair component structure of claim 1, wherein: The first support section of the support side of the resilient member is linear, and the second support section is arc-shaped.

8. The chair component structure of claim 1, wherein: The base member and the resilient member are combined into a seat cushion or an armrest.

9. The chair component structure of claim 1, wherein: The pressure receiving top of the resilient member has a pressure receiving outer surface, and the chair cushion structure further comprises a reinforcing rib unit provided on the pressure receiving outer surface of the resilient member and formed by a plurality of reinforcing ribs.

10. The chair component structure of claim 1, wherein: The pressure receiving top of the resilient member has a pressure receiving inner surface, and the chair cushion structure further comprises a reinforcing rib unit provided on the pressure receiving inner surface of the resilient member and formed by a plurality of reinforcing ribs.

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