JP3197480U - Chair armrest - Google Patents

Abstract

The present invention provides a chair armrest having improved meshing joint strength between upper and lower components and safety during use. A lower component includes a lower fitting portion having a hook portion protruding at a tip at at least both ends of one surface. The upper component 20 is coupled to the lower component and includes an armrest outer pad 21, an inner pad 22, and an internal plywood 23. The internal plywood is coupled and fixed to the armrest outer pad, and at least two fitting holes 240 are provided at corresponding positions of the lower fitting portion 31, and the fitting holes have a larger hole area than the cross section of the lower fitting portion. In the fitting hole, an extending piece 241 extends from the edge of one end inward in the width direction, and a locking portion is provided at the bottom of the other end. The lower fitting portion 31 is fitted into the fitting hole 240, and the meshing surface of the hook portion comes into contact with the surface of the locking portion. [Selection] Figure 2

Description

  The present invention is applied to the technical field of furniture, and more particularly to an armrest of a chair.

  Usually, armrests are installed on both sides of the chair in order to conform to ergonomic theory and improve sitting comfort. Most armrests of conventional chairs are fixed by joining an upper component and a lower component, and the upper component and the lower component are mostly fitted together. However, the general fitting method only fits into each other and fixes the position, and changes in sitting posture, poor sitting posture, etc. always cause the armrest to vibrate, and the upper and lower components of the armrest of the chair There is a possibility that danger will occur if the meshing of the nuts loosens or falls off.

  Therefore, the present invention is to solve the problem of loosening or falling off of the meshing of the upper component and the lower component, which is a drawback of the prior art.

  An object of the present invention is to provide an armrest for a chair that enhances bonding strength and safety during use.

  In order to achieve the above object, an armrest of a chair according to the present invention includes a lower component and an upper component. The lower component portion has a lower fitting portion at least at both ends of one surface, an elastic column is formed at the lower fitting portion, and a hook portion protrudes from the tip of the elastic column. The meshing surface is installed at a position adjacent to the column, and the meshing surface and the elastic column are vertical. The upper component is coupled to the lower component and has an armrest outer pad and an internal plywood. The internal plywood is bonded and fixed to the armrest outer pad, and at least two insertion holes are installed in the lower insertion part corresponding to the lower component part of the internal plywood, and the insertion hole is larger than the cross section of the lower insertion part. It has a pore area. In the fitting hole, the extending piece extends inward from the edge of one end in the width direction, and a locking portion is provided at the bottom of the other end. The lower fitting portion is fitted in the fitting hole. The hook portion of the lower fitting portion is accommodated in the corresponding fitting hole. The meshing surface abuts on the surface of the locking portion. The free end of the extension piece is adjacent to one surface of the mating surface that is away from the hook portion.

  The armrest of the chair of the present invention can solve the problem of loosening and dropping of the upper component and the lower component (which is a drawback of the prior art) and can increase the strength of the connection.

It is a disassembled perspective view at the time of applying the armrest by one Embodiment of this invention to a chair. It is the disassembled perspective view which looked at the armrest by one Embodiment of this invention from the top. It is the disassembled perspective view which looked at the armrest by one Embodiment of this invention from the bottom. It is sectional drawing of the armrest by one Embodiment of this invention. It is an enlarged view of the combination part of the armrest by one Embodiment of this invention. It is an enlarged view of the combination part of the armrest by one Embodiment of this invention. It is the part enlarged view after the assembly of the armrest by one Embodiment of this invention.

(One embodiment)
As shown in FIGS. 1 to 4 and 7, the armrest of the chair of the present invention is a part of the chair 10 and is installed on the support pillars 11 on both sides of the chair 10. The armrest of the chair includes an upper component 20 and a lower component 30. The upper component part 20 includes an armrest outer pad 21, an inner pad 22 and an internal plywood 23.

  The lower component 30 is fixed to the support column 11, and a plurality of reinforcing pieces 32 are installed in the lower component 30 to reinforce the strength of the lower component 30. The lower component 30 is adjacent to one surface of the upper component 20 and has at least two lower fitting portions 31. As shown in the figure, at one end of the lower component 30, three lower fitting portions 31 are provided so as to project in the direction of the upper component 20, and at the other end, two lower fitting portions 31 are provided. Protrusively installed. Each of the lower fitting portions 31 is formed with an elastic column 310, and a hook portion 311 protrudes from the tip of the elastic column 310. The hook portion 311 is provided with a meshing surface 312 at a position adjacent to the elastic column 310. The meshing surface 312 is perpendicular to the elastic column.

  The armrest outer pad 21 has a case-like shape, and an opening 210 is formed toward the lower component 30. Further, the armrest outer pad 21 is made of a flexible material such as thermoplastic polyurethane (TPU), and the engagement edge 211 is formed annularly in the direction of the opening 210 on the bottom edge of the armrest outer pad 21. Is formed.

  The inner pad 22 is housed inside the armrest outer pad 21, and the material of the inner pad 22 is, for example, a soft material such as a foaming material or urethane.

  The inner plywood 23 is formed by extending the side edge 230 toward the lower component 30 at a position close to the peripheral edge, and the inner plywood 23 is fitted inside the upper component 20. The side edge 230 is bonded to the inner surface of the locking edge 211 of the armrest outer pad 21 so that the inner pad 22 is sandwiched between the armrest outer pad 21 and the inner plywood 23. In addition, the armrest outer pad 21 is fixed to the inner plywood 23 by being fitted to each other. A plurality of fitting holes 240 are provided in the lower fitting part 31 corresponding to the lower component part 30 of the internal plywood 23, and the fitting holes 240 are larger than the area of the lower fitting part 31. In addition, an extension piece 241 extends on one side of the fitting hole 240, and a locking portion 242 is installed on the bottom of the other side. The lower fitting portion 31 is fitted in the fitting hole 240. That is, as shown in the drawing, five fitting holes 240 are provided corresponding to the lower fitting portions 31. The hook portion 311 of any lower fitting portion 31 is also accommodated in the corresponding fitting hole 240, and the meshing surface 312 conflicts with the surface of the locking portion 242. The free end of the extension piece 241 is adjacent to one surface of the meshing surface 312 away from the hook portion 311, so that the lower fitting portion 31 is prevented from being detached from the fitting hole 240, and the lower fitting portion 31 is The purpose of being securely fixed and coupled to the fitting hole 240 is achieved, and the connectivity between the lower component 30 and the upper component 20 is enhanced. Among these, it is not necessary to install the extended pieces 241 in all of the fitting holes 240, and the extended pieces 241 may be installed in at least one of the fitting holes 240 as necessary.

  When combining, as shown in FIGS. 4 and 5, the armrest outer pad 21, the inner pad 22, and the inner plywood 23 are formed by being combined with the upper component 20 in advance. And the fitting hole 240 of the upper component part 20 just corresponds to the lower fitting part 31 of the lower component part 30. Below, the fitting hole 240 and the lower fitting part 31 which respond | correspond by single are demonstrated. The hook portion 311 of the lower fitting portion 31 comes into contact with the locking portion 242, and the elastic column 310 has appropriate elasticity, so that it flexibly curves toward the extending piece 241 of the fitting hole 240. Further, as shown in FIG. 6, the extension piece 241 is pressed and curved upward with elasticity, so that the hook portion 311 of the lower fitting portion 31 enters the fitting hole 240. It becomes easy. At the same time, description will be made with reference to FIG. When the hook portion 311 of the lower fitting portion 31 enters after the fitting hole 240, the elasticity of the elastic column 310 of the lower fitting portion 31 is restored, so that the meshing surface 312 of the hook portion 311 is attached to the surface of the locking portion 242. Match. Further, the hook portion 311 is detached from the extended piece 241, and the extended piece 241 recovers its elasticity and returns to its original state. At the same time, it is formed behind the lower fitting portion 31. For this reason, when the upper component part 20 and the lower component part 30 receive vibration, the hook part 311 of the lower fitting part 31 escapes toward the extended piece 241 due to the position restriction of the end face of the extended piece 241. Therefore, by forming a positively engaged state, the upper component 20 and the lower component 30 are prevented from being separated from each other, and the safety during use is enhanced.

  As mentioned above, although embodiment of this invention has been explained in full detail based on drawing, a concrete structure is not restricted to these embodiment, There is a design change etc. in the range which does not deviate from the gist of this invention. Is also included in the present invention.

DESCRIPTION OF SYMBOLS 10 Chair 11 Support pillar 20 Upper structure part 21 Armrest outer side pad 210 Opening 211 Locking edge 22 Inner pad 23 Inner plywood 230 Side edge 240 Fitting hole 241 Extension piece 242 Locking part 30 Lower structure part 31 Lower fitting part 310 Elastic pillar 311 Hook 312 Engagement surface 32 Reinforcing piece

Claims (8)

A lower component and an upper component;
The lower component part has a lower fitting part on at least both ends of one surface, an elastic column is formed on the lower fitting part, and a hook part protrudes from the tip of the elastic column, A meshing surface is installed at a position adjacent to the elastic column of the hook portion, and the meshing surface and the elastic column are vertical,
The upper constituent part is coupled to the lower constituent part, and has an armrest outer pad and an internal plywood,
The inner plywood is coupled and fixed to the armrest outer pad, and at least two fitting holes are provided in the lower fitting portion corresponding to the lower component portion of the inner plywood, and the fitting holes are Has a larger hole area than the cross-section of the lower fitting part,
In the width direction, in the width direction, the extending piece extends inward from the edge of one end, and a locking portion is installed at the bottom of the other end,
The lower fitting portion is fitted in the fitting hole,
The hook portion of the lower fitting portion is housed in the corresponding fitting hole,
The meshing surface is in contact with the surface of the locking portion,
The armrest of the chair, wherein a free end of the extending piece is adjacent to one surface of the meshing surface separated from the hook portion.   The armrest of the chair according to claim 1, wherein a plurality of reinforcing pieces are installed inside the lower component part.   The lower component part has three lower fitting parts protruding and installed at one end toward the upper component part, and two lower fitting parts protruding and installed at the other end. The armrest of the chair according to claim 1, wherein The armrest outer pad is a rectangular parallelepiped, and an opening is formed toward the lower component part,
The inner plywood is formed by extending a side edge toward the lower component at a position close to a peripheral edge, and is fitted into the upper component, and the side edge of the armrest outer pad. The armrest of the chair according to claim 1, wherein the armrest is bonded to an inner surface of the locking edge.   The armrest of the chair according to claim 1, wherein the upper component part further includes an inner pad, and the inner pad is sandwiched and installed between the armrest outer pad and the inner plywood. .   The armrest of the chair according to claim 1, wherein the armrest outer pad is made of a flexible material.   The chair armrest according to claim 6, wherein the flexible material is thermoplastic polyurethane.   The chair innerrest according to claim 5, wherein the inner pad is made of a foamable material or urethane.

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