JP4908965B2 - Chair armrest equipment - Google Patents

Description

  The present invention relates to an armrest device for a chair in which a pad member is mounted on an upper surface of an elbow rest substrate.

As a conventional armrest device of this type of chair, a pad member provided with a hard core material having an appropriate elasticity on the upper surface of the armrest substrate and a soft cover material covering the upper surface, and the pad member is elastic in the middle Some of them are mounted such that a hollow portion is formed so as to bend (see, for example, Patent Documents 1 to 4 according to the prior application of the present applicant).
JP 2000-333776 A JP 2000-333777 A JP 2005-131238 A JP 2006-102131 A

  However, the armrest device for a chair described in Patent Documents 1 to 3 is provided with boss portions at four corners on the upper surface of the elbow pad and the lower surface of the core member, and the upper and lower boss portions are fixed with fixing screws. Because the elbow rest board and the pad member are fixed, the flexibility of the four corners of the pad member is lower than the other parts, giving the impression that the part is hard, and when the elbow is placed on the pad member There is a problem that the feeling of is bad.

  Moreover, since the armrest device of the chair described in patent document 4 does not provide the boss | hub part etc. in the core material, there is no problem that the flexibility of the four corner parts of the above pad members falls. The downward pieces provided on the lower surface of the outer peripheral portion of the core member are externally fitted to the standing pieces provided on the upper surface of the outer peripheral portion of the elbow pad, and the plurality of engaging claws provided on the lower ends of the downward pieces are Since the downward facing piece and the engaging piece are integrally formed with the core material by the synthetic resin material having elasticity, the engaging claw is There exists a problem that it is easy to remove | deviate from an engagement hole, and a pad member tends to remove | deviate from an elbow rest board | substrate.

  In view of the above-described problems of the prior art, the present invention can securely hold the pad member on the elbow rest substrate without losing sensation, and the pad member has a uniform and large flexibility. An object of the present invention is to provide an armrest device for a chair that can be imparted with sex and has a good feel when armrested.

According to the present invention, the above problem is solved as follows.
(1) A pad member provided with a hard core material having appropriate elasticity on the upper surface of the elbow pad and a soft surface covering material covering the upper surface is made to allow the pad member to bend elastically in the middle. In the chair armrest device that is mounted so that a hollow portion is formed, an upright edge is provided on the outer peripheral edge of the upper surface of the elbow pad, and a support plate is provided on the inner side of the upright edge. The outer peripheral edge is spaced upward from the upper surface of the elbow pad, and is fastened so as to be spaced inward from the standing edge, and the outer surface of the downward piece hanging from the outer peripheral portion of the core member, The lower surface of the inward engagement claw provided at the lower end of the downward piece is covered with the cover material, the downward piece of the core material is externally fitted to the support plate, and the engagement claw of the downward piece Is engaged with the outer peripheral edge of the support plate, and the outer peripheral edge of the support plate and the elbow rest substrate Between the inner surface of the upright edges, the downward piece and the cover material are attached, and between the outer peripheral edge of the support plate and the upper surface of the elbow pad, the engagement claw and the cover material are attached. To wear.

(2) In the above item (1), the standing edge is provided continuously to the entire outer peripheral edge of the elbow pad.

(3) In the above item (1) or (2), the downward piece is provided so as to be continuous along the entire outer peripheral edge of the core member and to be externally fitted to the support plate.

(4) In any one of the above items (1) to (3), the engaging claw is provided on the inner surface of the downward piece in the corner portion of the core member.

(5) In any one of the above items (1) to (4), a shallow recess is provided in a portion of the inner surface of the downward piece away from the engaging claw.

(6) In any one of the above items (1) to (5), the support plate is fixed to the upper surface of the elbow pad with a plurality of fixing screws.

(7) In any one of the above items (1) to (6), a large number of small holes are provided in the core member, and a part of the surface material is caused to enter each small hole.

(8) In any one of the above items (1) to (7), the pad member is formed so that the planar shape has an elongated trapezoidal shape whose lateral width gradually increases from one end to the other end in the front-rear direction, and A large number of small holes are provided in the core member so as to gradually decrease the aperture ratio from the one end to the other end.

According to the present invention, the following effects can be achieved.
According to the first aspect of the invention, the downwardly facing piece of the core member is externally fitted to the support plate, the engaging claws of the downwardly facing piece are engaged with the outer peripheral edge of the support plate, and the outer peripheral edge and the elbow of the support plate Between the inner surface of the rising edge of the abutting board, the downward facing piece and the cover material are attached, and between the outer peripheral edge of the support plate and the upper surface of the elbow pad, the engaging claw and the outer cover material are Since it is worn, the engaging claw of the downward piece is unlikely to be detached from the outer peripheral edge of the support plate, and the pad member can be reliably held on the elbow rest substrate without being dislodged.
In addition, the core of the pad member only needs to be provided with a downward-facing piece at the outer peripheral edge, and it is not necessary to provide bosses or the like at the four corners as in the prior art. It can be provided, and the feel at the time of armrest can be improved.

  According to invention of Claim 2, since the standing edge is provided so that it may continue in all the outer periphery of an armrest board | substrate, the lower end part of the covering material which covers the outer surface of the downward piece of the core material in a pad member Can be completely enclosed from the outside, and the bonding strength between the pad member and the elbow rest substrate can be increased, and the appearance can be improved.

  According to the third aspect of the present invention, since the downward piece is provided so as to be continuous along the entire outer peripheral edge of the core material and to be externally fitted to the support plate, the downward support piece surrounds the entire support plate. Thus, it is possible to reliably prevent the displacement of the pad member with respect to the elbow pad, and to increase the bonding strength between the pad member and the elbow pad.

  According to the fourth aspect of the present invention, since the engaging claw is provided on the inner surface of the downward piece in the corner portion of the core member, it is ensured that the pad member starts to peel from the corner portion that is most easily peeled off. Can be prevented.

  According to the fifth aspect of the present invention, since the shallow concave portion is provided in the portion of the inner surface of the downward piece that is away from the engaging claw, the downward direction without lowering the bonding strength between the pad member and the elbow pad substrate. The piece can be easily fitted on the support plate, and a dimensional error between the downward piece and the outer shape of the support plate can be absorbed.

  According to the invention described in claim 6, since the support plate is fixed to the upper surface of the elbow rest substrate with the plurality of fixing screws, the support plate can be easily and strongly coupled to the elbow rest substrate. .

  According to the invention of claim 7, since the core member is provided with a large number of small holes, and a part of the cover material is made to enter each small hole, the flexibility of the pad member can be improved, It is possible to reliably prevent the surface material from peeling off from the core material.

  According to the invention of claim 8, the pad member is formed so that the planar shape has an elongated trapezoidal shape in which the lateral width gradually increases from one end to the other end in the front-rear direction, and a large number of small parts are formed on the core member. Since the holes are provided from the one end to the other end so that the aperture ratio gradually decreases, the rigidity of the wide portion of the core material is higher than the rigidity of the narrow portion.

  Therefore, even if the planar shape of the pad member is an elongated trapezoidal shape, the wide portion is easily bent excessively, the pad member is easily detached from the elbow pad, or the seated person puts his elbow on the pad member. It is possible to provide a chair armrest device for a chair that has a different feeling between the wide width portion and the narrow width portion and can prevent an uncomfortable feeling, and has a good feel when armrested.

Hereinafter, an embodiment of the present invention will be described with reference to the accompanying drawings.
As shown in FIGS. 1 to 3, this armrest device for a chair extends from the lower side surface of the chair seat (not shown) through the side of the seat so as to incline forward and upward ( 1) and the upper end of this armrest strut (1) is made of a hard synthetic resin material, and the planar shape of the elbow has an elongated trapezoidal shape that faces in the front-rear direction and gradually increases in width from the front end to the rear end. The rear lower surface of the contact substrate (2) is provided continuously.

  On the upper surface of the elbow pad (2), there is a plate-like core material (3) made of a hard synthetic resin material that can be elastically deformed moderately, and a cover material (4) made of a soft synthetic resin material covering the surface. The provided pad member (5) is mounted such that a hollow portion (6) is formed in the middle so that the pad member (5) can be elastically bent downward.

  The core material (3) is preferably formed of, for example, polypropylene or polyethylene having moderate elasticity, and the covering material (4) is formed of, for example, polyurethane or polyester-based elastomer having flexibility and elasticity. .

  The elbow rest substrate (2) and the pad member (5) may be formed into an elongated trapezoidal shape that is substantially in the front-rear direction in which the lateral width gradually increases from the rear end to the front end by reversing the above shape.

  On the upper surface of the elbow rest substrate (2), an upstanding edge (7) standing up in a loop along the entire outer periphery, four corners inside the upstanding edge (7), and an intermediate in the front-rear direction A boss portion (9) disposed at a total of six locations on both sides and having a screw hole (8) formed downward from the center of the upper end, and connecting the boss portions (9), the front-rear direction, A large number of ribs (10) are provided that face in the left-right direction and the diagonal direction therebetween.

  On the upper surface of the elbow rest substrate (2), a horizontal plate-like support plate (11) made of metal or a hard synthetic resin material is spaced apart from the upper periphery of the upper surface of the elbow rest substrate (2). The fixing screws (12) that are screwed into the screw holes (8) of the respective boss portions (9) are firmly attached to the bosses (9) so as to be spaced inward from the edge (7).

  A part of the lower surface of the core material (3) that is slightly inside from the outer peripheral edge is continuous in a loop along the entire outer peripheral edge of the core material (3), and on the standing edge (7) of the elbow pad (2) A downwardly-facing piece (13) adapted to be externally fitted is continuously provided so as to hang down.

At the lower end of the downward piece (13), there are a plurality of inward engagement claws (14) that can engage with the lower surface of the outer peripheral edge of the support plate (11). It is provided at an appropriate interval in the direction. In particular, an engaging claw (14) is always provided on the inner surface of the downward piece (13) at the corner portion of the core (3).
The outer side surface of the downward piece (13) and the lower surface of the engaging claw (14) are covered with the cover material (4). Further, the engaging claw (14) is long in the horizontal direction, thereby increasing the bonding strength between the elbow rest substrate (2) and the core material (3).

  As shown in FIGS. 4 to 8, the downwardly facing piece (13) of the core material (3) is externally fitted to the support plate (11), and the engaging claws (14) of the downwardly facing piece (13) The lower plate (13) is engaged with the lower surface of the outer peripheral edge of the supporting plate (11) and between the outer peripheral edge of the supporting plate (11) and the inner surface of the standing edge (7) of the elbow rest substrate (2). ) And the cover material (4), and between the outer peripheral edge of the support plate (11) and the upper surface of the elbow pad (2), the engaging claw (14) and the cover material (4) By engaging, the engaging claw (14) of the downward piece (13) is not easily detached from the outer peripheral edge of the support plate (11), and the pad member (5) can be removed from the elbow without being distracted. It is securely held on the substrate (2).

  Further, the core member (3) of the pad member (5) only needs to be provided with a downward piece (13) at the outer peripheral edge, and it is not necessary to provide bosses or the like at the four corners as in the prior art. (5) can be made uniform and have great flexibility, and the feel when armrested can be improved.

  A shallow recess (15) is provided on the inner surface of the core member (3) facing away from the engaging claw (14) in the downward piece (13), and the pad member (5) is provided by the recess (15). ) And the elbow rest substrate (2) without lowering the bonding strength, the downward piece (13) can be easily fitted on the support plate (11), and the downward piece (13) can be supported. It is possible to absorb a dimensional error from the outer shape of the plate (11). Further, the material can be reduced and the weight can be reduced without reducing the bonding strength between the elbow pad (2) and the pad member (5).

  As shown in FIG. 3, the upper surface of the support plate (11) is normally separated from the lower surface of the core material (3), but when the pad member (5) is elastically bent downward during armresting, The core member (3) is in contact with the pad member (5) to prevent further bending of the pad member (5).

On the upper surface of the core material (3), a row of a plurality of small holes (16) facing in the front-rear direction for enhancing the flexibility of the core material (3), the interval between adjacent ones is determined as the core material (3 ) Gradually increases from the front part to the rear part, in other words, from the narrow front end part to the wide rear end part, it is provided in an arrangement that gradually increases from dense.
In this way, by arranging the small holes (16) in the core material (3) gradually from dense to coarse from the front to the rear of the core (3), the core (3) The aperture ratio is gradually decreased from the front to the rear.

  Each small hole (16) is preferably an oval or an ellipse whose major axis is substantially in the front-rear direction, and the arrangement of the small holes (16) in rows adjacent to each other is preferably staggered.

  The front and rear end faces of each small hole (16) have a shape that expands downward, and as shown in FIG. 1, by inserting a part of the soft cover material (4) into this expanded portion, The outer covering material (4) can be prevented from peeling off from the core material (3).

  Further, by providing a recessed portion (17) that expands downward in the center of the cover material (4) inserted into each small hole (16), the material cost of the cover material (4) is reduced. While being able to reduce, weight reduction can be achieved.

This recessed portion (17) is a lower die (not shown) provided with a number of protrusions for forming the recessed portion (17) on the upper surface when the core material (3) and the cover material (4) are insert-molded. The core material (3) is placed on the surface, and the synthetic resin material for forming the cover material (4) is guided on the upper surface of the core material (3), and a part of the synthetic resin material is formed in the small holes (16 ) And the space between the inner surface of the lower mold and the surface of the protrusion of the lower mold can be easily formed.
It should be noted that the entire inside of the small hole (16) may be partially filled with the cover material (4).

  Since the armrest device of the present embodiment is configured as described above, the pad member (5) can be securely held on the elbow rest substrate (2) without being distracted, and the pad member (5 ) Can be provided with uniform and great flexibility, and an armrest device for a chair having a good feel when armrested can be provided.

In addition, the following effects can be achieved.
(1) Since the standing edge (7) is continuously provided on the entire outer peripheral edge of the elbow pad (2), the downwardly facing piece (13) of the core member (3) in the pad member (5) is provided. The lower end portion of the outer covering material (4) covering the outer side surface can be completely surrounded from the outside, and the bonding strength between the pad member (5) and the elbow pad (2) can be increased and the appearance is improved. be able to.

(2) Since the downward piece (13) is provided so as to be continuous along the entire outer peripheral edge of the core member (3) and to be externally fitted to the support plate (11), the downward piece (13) In addition, the entire support plate (11) can be surrounded to reliably prevent the displacement of the pad member (5) with respect to the elbow pad (2), and the pad member (5) and the elbow pad (2) The bonding strength of can be increased.

(3) Since the engaging claw (14) is provided on the inner surface of the downward piece (13) in the corner portion of the core material (3), the pad member (5) is peeled off from the corner portion that is most easily peeled off. It can be surely prevented from starting.

(4) Since the shallow concave portion (15) is provided in the inner surface of the downward piece (13) away from the engaging claw (14), the pad member (5) and the elbow rest substrate (2) are coupled. The downward piece (13) can be easily fitted on the support plate (11) without reducing the strength, and the dimensional error between the downward piece (13) and the outer shape of the support plate (11), etc. Can be absorbed.

(5) Since the support plate (11) is fixed to the upper surface of the elbow rest substrate (2) with a plurality of fixing screws (12), the support plate (11) is attached to the elbow rest substrate (2). Can be combined easily and strongly.

(6) A large number of small holes (16) are provided in the core material (3), and a part of the cover material (4) is inserted into each small hole (16). Flexibility can be enhanced, and separation of the outer covering material (4) from the core material (3) can be reliably prevented.

(7) The pad member (5) is formed so that the planar shape has an elongated trapezoidal shape whose lateral width gradually increases from one end to the other end in the front-rear direction, and a large number of small holes are formed in the core member (3). Since (16) is provided with an arrangement in which the aperture ratio gradually decreases from one end to the other end, the rigidity of the wide portion of the core material (3) is higher than the rigidity of the narrow portion.
Therefore, even if the planar shape of the pad member (5) is an elongated trapezoidal shape, the wide portion is likely to be excessively bent, and the pad member (5) is easily detached from the elbow rest substrate (2). Providing an armrest device for a chair that feels comfortable when placing an elbow on the pad member (5), which can be different between the wide and narrow portions and can prevent a sense of incongruity. can do.

  As mentioned above, although embodiment of this invention was explained in full detail with drawing, a specific structure is not restricted to this embodiment, A design change etc. are possible in the range which does not deviate from a claim.

It is the disassembled perspective view which looked at the armrest apparatus of one Embodiment of this invention from back diagonally downward. Similarly, it is the disassembled perspective view seen from the back diagonally upward. Similarly, it is the disassembled perspective view which looked at the state which attached the support plate to the elbow rest board | substrate from back diagonally upward. Similarly, it is a top view of a rear part. It is the VV line vertical front view of FIG. It is the VI-VI line vertical front view of FIG. It is the VII-VII line vertical side view of FIG. It is an enlarged vertical front view of the principal part. It is an enlarged vertical front view similar to FIG. 8, showing a state before the pad member is attached.

Explanation of symbols

(1) Armrest support
(2) Elbow pad
(3) Core material
(4) Surface material
(5) Pad material
(6) Hollow part
(6) Surface material
(7) Standing edge
(8) Screw hole
(9) Boss
(10) Rib
(11) Support plate
(12) Fixing screw
(13) Downward strip
(14) Engaging claw
(15) Recess
(16) Small hole
(17) Recessed part

Claims (8)

A hollow for enabling the pad member to bend elastically in the middle of a pad member having a hard core material having moderate elasticity on the upper surface of the elbow pad and a soft cover material covering the upper surface. In the armrest device of the chair that is mounted so that the part is formed,
An upstanding edge is provided on the outer peripheral edge of the upper surface of the elbow pad, and a support plate is provided on the inner side of the upright edge. The outer surface of the downward piece hanging from the outer periphery of the core member and the lower surface of the inward engagement claw provided at the lower end of the downward piece. Covering with a material, and fitting the downward piece of the core material to the support plate, engaging the engaging claw of the downward piece with the outer peripheral edge of the support plate, and the outer peripheral edge of the support plate Between the inner surface of the standing edge of the elbow pad, the downward piece and the cover material are attached, and between the outer peripheral edge of the support plate and the upper surface of the elbow pad, the engagement claw and the cover An armrest device for a chair, characterized by wearing materials.   2. The armrest device for a chair according to claim 1, wherein the standing edge is provided continuously on the entire outer peripheral edge of the elbow pad.   The chair armrest device according to claim 1 or 2, wherein the downward piece is provided so as to be continuous along the entire outer peripheral edge of the core member and to be externally fitted to the support plate.   The armrest device for a chair according to any one of claims 1 to 3, wherein the engaging claw is provided on an inner surface of the downward piece at a corner portion of the core member.   The armrest device for a chair according to any one of claims 1 to 4, wherein a shallow concave portion is provided in a portion of the inner surface of the downward piece away from the engaging claw.   The armrest device for a chair according to any one of claims 1 to 5, wherein the support plate is fixed to the upper surface of the elbow pad with a plurality of fixing screws.   The armrest device for a chair according to any one of claims 1 to 6, wherein a plurality of small holes are provided in the core member, and a part of the outer covering material is caused to enter each small hole.   The pad member is formed so as to form a long and narrow trapezoidal shape in which the lateral width gradually increases from one end to the other end in the front-rear direction, and a large number of small holes are formed in the core member from the one end to the other end. The armrest device for a chair according to any one of claims 1 to 7, which is provided with an arrangement in which the aperture ratio gradually decreases.

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