JPH04115431U - Seat fittings for attaching the legs of sitting furniture - Google Patents

Abstract

(57) [Summary] [Structure] A seat fixture to be attached to the legs of sitting furniture, comprising a seat body fixed to the legs and having a downwardly opened concave groove, and this seat fixture. A sliding material disposed in the groove of the main body, and a sliding material interposed between the sliding material and the bottom of the groove of the seat main body, and elongated when almost no external load is applied to the seating furniture. While the lubricating material protrudes from the groove when the lubricating material is in the groove, it is elastically deformed so as to contract and retreat into the groove when an external load of a predetermined value or more is applied to the seating furniture. The invention is characterized by comprising a cushion member that can be used. [Effects] When moving furniture such as chairs, it can be moved quietly without causing friction noise with the floor, and when a person is seated, it does not move carelessly, allowing the person to sit with peace of mind. Furthermore, it has excellent durability.

Description

[Detailed explanation of the idea]

0001

[Technical field of invention]

The present invention relates to furniture for sitting, particularly seat fittings for attaching legs to the legs of chairs. Ru.

0002

[Technical background of the invention]

For sitting furniture, such as chairs, the legs are made of metal pipes or In addition, rubber bodies, etc. are sometimes attached to metal pipes to prevent slipping. . However, when moving such a chair, the metal pipe may rub against the floor and cause damage. This may cause unpleasant noises and damage to the floor surface. . Also, if a rubber body etc. is attached, the rubber body may get in the way of slipping and cause movement. There were cases where it became a hindrance.

0003 Therefore, the present inventor devised a design as shown in Fig. 5 so that chairs, etc. can be moved smoothly. Uni proposed a seat that can be attached to the legs. That is, this sitting tool 1 has metal pipes on the legs. A main body 3 fixed to the main body 3, and a rubber etc. attached to this main body 3 via an adhesive layer. a buffer body 4, and a PTFE sheet 5 attached to this buffer body 4 via an adhesive layer. It is composed of This PTFE sheet 5 has very high frictional resistance against the floor surface etc. Because the chair is so low, there is no noise when moving the chair, and there is no damage to the floor surface. You can move the chair extremely smoothly without damaging it. Also, this Since the seating tool 1 has the cushioning body 3, it also has a cushioning effect when sitting on the chair. I can do it.

0004 However, firstly, the PTFE sheet 5 is very slippery, so people do not When sitting on a chair, the chair may slip due to carelessness, resulting in unexpected accidents. There is a risk of causing an accident. Second, since the PTFE sheet 5 is constantly under load, Another problem is that the PTFE sheet 5 has low durability. Even if PTFE Even if the thickness of sheet 5 is increased, cold flow is likely to occur, resulting in creep deformation. Therefore, it is difficult to improve durability.

[0005]

[Purpose of invention]

This invention allows you to move furniture such as chairs without causing any friction noise with the floor. It can move quietly and smoothly, and people can rest assured that they will not move accidentally when seated. For attaching to the legs of sitting furniture, which allows you to sit on it while also having excellent durability. The purpose is to provide seating equipment.

[0006]

[Summary of the idea]

In order to achieve this purpose, the seat fixture for attaching the legs of sitting furniture according to the present invention, A seating tool attached to the legs of furniture for seating, a seat main body fixed to the leg and having a groove opened downward; A sliding material arranged in the groove of this seat body, It is interposed between this sliding material and the bottom of the concave groove of the seat body, and is used in most sitting furniture. When no external load is applied, the lubricant is in an extended state and protrudes from the groove. On the other hand, when an external load higher than a specified level is applied to seating furniture, it shrinks. a cushion member that is elastically deformable so as to cause the slipping material to retract into the groove; It is characterized by the following:

[0007] Further, the lubricating material is formed from a fluororesin. is preferred. In this way, in the present invention, the lubricant is interposed between the sliding material and the bottom of the groove of the seat main body. When the cushion member is stretched when there is almost no external load acting on the seating furniture, In this state, the lubricant is made to protrude from the concave groove, while an external load exceeding a predetermined value is applied. When the material acts on the seating furniture, it contracts and causes the slipping material to retreat into the groove. Works like a sea urchin.

[0008] Therefore, when no one is sitting on the chair, the cushioning material is in an extended state. The sliding material protrudes from the groove and supports the weight of the chair itself, as well as supporting the floor surface. is in contact with. Therefore, when moving such a chair, frictional resistance Because the chair can be moved using a small slippery material, friction noise from the floor surface may be generated. and will not damage the floor surface.

[0009] On the other hand, when a person sits on a chair, the cushioning material contracts and the slipping material falls into the groove. The seat body stably supports the weight of the person and the chair itself. death Therefore, if the seat body is made of a non-slip material, it will be easier for a person to sit on the chair. Even if there is a problem, the chair will not slip carelessly and there will be no risk of unexpected accidents. You can sit down.

0010 Furthermore, since the structure is not such that the lubricant is in constant contact with the floor surface, even if the lubricant is made of PTFE, The durability of the seat can be made sufficiently excellent even if it is formed from .

[0011]

[Specific explanation of the idea]

Hereinafter, with reference to the drawings, a seat for attaching legs of sitting furniture according to an embodiment of the present invention will be described. Explain the ingredients.

0012 FIG. 1 is a side view of a chair to which the leg attachment seat according to the present embodiment is applied, and FIGS. 2 and 3 are FIG. 2 is a cross-sectional view of the leg attachment seat according to the present embodiment, and FIG. 2 shows a state in which a person is not seated. FIG. 3 shows a state in which a person is seated.

[0013] As shown in FIG. 1, the chair 10 includes a seat portion 11, a backrest portion 12, and a metal pad. The leg portion 13 is made of a type. This leg portion 13 touches the floor surface 15 The leg attachment seat fixture 20 according to this embodiment is attached to the part.

[0014] As shown in FIG. 2, in this embodiment, the leg attachment seat 20 has screws 2 attached to the leg 13. The seat is provided with a seat main body 22 fixed by 1. This seat main body 22 has a circular cross section. A shaped groove 23 is formed. In the groove 24 penetrating upward from the bottom of this groove 23, The seat main body 22 is fixed to the leg part 13 by inserting the screw 21 and screwing it into the leg part 13. Ru. This seat main body 22 is made of a material that does not easily slip on the floor surface 15 and is suitable for people and chairs. It is made of a material that can support its own load, such as relatively hard rubber or resin. be.

[0015] A cylindrical sliding member 25 is disposed within the groove 23 of the seat main body 22. This slide The material 25 is preferably made of a material that is very slippery on the floor surface 15, especially fluororesin. Made from PTFE, PFA, FEP, EPFE, CPFE, PVDF, etc. . In addition, when molded from PTFE, mechanical strength such as hardness and abrasion resistance is In order to increase the strength, a filler may be included.

[0016] A cylindrical cushioning material 26 is interposed between the slipping material 25 and the bottom of the groove 23. There is. The cushioning material 26 and the bottom of the groove 23 are connected by an adhesive 27. It's worn. The adhesive used is epoxy adhesive, but in this example, , the type of adhesive is not particularly limited as there is almost no force acting in the direction of peeling them off. Not possible. Furthermore, the adhesive 28 between the lubricant 25 and the cushion material 26 is made of PTFE. Since adhesion is relatively difficult, PTFE is surface-treated and bonded with an adhesive. One example is Cemedine (cyanoacrylate type 3000 gold). be able to.

[0017] This cushioning material 26 is used when almost no external load acts on the chair 10 (i.e., When no person is seated), the sliding member 25 is in an extended state and protrudes from the groove 23. While the chair 10 is being held When sitting down), the lubricant 25 contracts and moves into the groove 23 (Fig. (See 3). Therefore, the cushioning material 26 is made of a material having this degree of elasticity, e.g. For example, it is made of rubber material, foamed plastic, etc., and is preferably made of Shore D7. It is a rubber with a hardness of about 0.

[0018] Furthermore, the clearance between the inner diameter of the groove 23 and the outer dimension of the cushion body 26 is Therefore, when the cushion body 25 is subjected to compressive deformation, it should be A clearance of 1.5 degrees is sufficient. Normally, the amount of compression is the body of the cushion body 25. A product ratio of about 20 to 30% is sufficient.

[0019] Furthermore, as shown in FIG. 2, the preferable dimensional relationship is D=10mm, h1=4 mm, d1 = 9.2 mm, h2 = 4 mm, d2 = 8 mm, h3 = 2 mm. Next, the operation of the leg mounting seat according to this embodiment will be explained.

[0020] When a person is not seated on the chair 10, the load acting on the legs 13 is This is the weight of the body, which is smaller than when a person is sitting, so the cushion material 26 does not stretch. The sliding member 25 protrudes from the groove 23 to support the weight of the chair 10 itself. and is in contact with the floor surface 15. Therefore, such a chair 10 When moving the chair 10, the chair 10 can be moved using the sliding material 25 with low frictional resistance. Therefore, frictional noise with the floor surface 15 is not generated, and there is no possibility of damaging the floor surface 15. do not have.

[0021] On the other hand, when a person sits on the chair 10, as shown in FIG. 6 elastically contracts, the lubricant 25 retreats into the groove 23, and the seat main body 22 This will stably support the weight of the chair itself. Therefore, the seat main body 22 is slippery. Because it is made of a material that is difficult to remove, even if a person is seated on the chair 10, the chair 10 Child 10 will not slip carelessly and will be seated safely without the risk of unexpected accidents. be able to.

[0022] Therefore, the degree of elasticity of the cushion material 26 is such that when no person is seated on it, While the chair 10 itself can be supported, when a person is seated, it receives the external load of the person. It is sufficient as long as it can be compressed and deformed. In addition, the human load may be an infant, etc. Therefore, this should also be taken into consideration when setting.

[0023] Furthermore, since the sliding material 25 does not have a structure in which it is always in contact with the floor surface 15, the sliding material 25 may loosen. Even if it is made of PTFE, the seat 20 has sufficient durability. can do.

[0024] FIG. 4 shows a modification of the leg attachment seat 20 according to the present invention. In this modification, instead of the cushioning material 26 such as rubber or foamed plastic, The cushioning material is composed of a coil spring 31. this coil spring Similar to the cushion material 26, the degree of elastic force of the material 31 is also determined when a person is not seated on the cushion material 26. While the chair 10 itself can be supported, when a person is seated, it receives the external load of the person. It is sufficient as long as it can be compressed and deformed.

[0025] Furthermore, the bottom of the groove 23 and the coil spring 31 are also fixed by adhesive. It is preferable that the lubricant 25 and the coil spring 31 are A notch 32 is provided in the ring 31, and the coil spring is press-fitted into this notch 32. It is preferable to do so.

[0026] The rest of the structure is the same as that of the embodiment shown in FIGS. 2 and 3, and has the same effects. Demonstrate. Note that the present invention is of course not limited to the embodiments described above, and can be modified in various ways. It is Noh. In particular, the material of the slipping material 25 is not limited to those illustrated, and the material of the cushioning material 25 is not limited to those illustrated. 6 is also a mechanical means such as a hydraulic cylinder in addition to the modified coil pulling. Good too.

[0027]

[Effect of the idea]

As explained above, in this invention, when a person is not sitting on a chair, The sliding material is in an extended state, and the slipping material protrudes from the groove to support the weight of the chair itself. It is held and is in contact with the floor. Therefore, moving such a chair When moving the chair, the chair can be moved using a slippery material with low frictional resistance, making it easier to move the chair with the floor surface. No friction noise is generated and no damage to the floor surface.

[0028] On the other hand, when a person sits on a chair, the cushioning material contracts and the slipping material falls into the groove. The seat body stably supports the weight of the person and the chair itself. death Therefore, if the seat body is made of a non-slip material, it will be easier for a person to sit on the chair. Even if there is a problem, the chair will not slip carelessly and there will be no risk of unexpected accidents. You can sit down.

[0029] Furthermore, since the structure is not such that the lubricant is in constant contact with the floor surface, even if the lubricant is made of PTFE, The durability of the seat can be made sufficiently excellent even if it is formed from .

[Brief explanation of drawings]

FIG. 1 is a side view of a chair to which a seat for attaching legs according to an embodiment of the present invention is applied.

FIG. 2 is a cross-sectional view of the leg attachment seat according to the same embodiment, and is a diagram showing a state in which no person is seated.

FIG. 3 is a cross-sectional view of the leg attachment seat according to the same embodiment, showing a state in which a person is seated.

FIG. 4 is a sectional view of a leg attachment seat according to a modified example, and is a diagram showing a state in which no person is seated.

FIG. 5 is a sectional view of a conventional leg attachment seat.

[Explanation of symbols]

20 Leg attachment seat fixture 22 Seating tool body 23 Groove 25 Sliding material 26 Cushion material

Claims (2)

[Scope of utility model registration request] Claim 1: A seat to be attached to the legs of furniture for sitting, comprising: a seat body fixed to the leg and having a downwardly opened groove; and a groove in the seat body. It is interposed between the sliding material disposed inside the seat and the bottom of the concave groove of the seat main body, and is in an extended state when almost no external load is applied to the seating furniture. A cushion member that allows the slipping material to protrude from the groove and is elastically deformable so as to contract and retract the slipping material into the groove when an external load of a predetermined value or more is applied to the seating furniture. A seat fixture for attaching legs of furniture for sitting, characterized by comprising the following. 2. The seat fixture for mounting a leg of sitting furniture according to claim 1, wherein the slipping material is made of fluororesin.