JP3398781B2 - Mounting structure of supported body - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an attachment structure for a supported body which is preferably used when a supported body such as a seat or a top plate is attached to a leg in a cantilever manner.

[0002]

2. Description of the Related Art For example, a chair in which only one end side of a supported object such as a seat or a top plate is supported by a leg in a cantilever manner for the purpose of, for example, ensuring a wide lower limb space and improving design. And furniture such as desks.

[0003]

However, in such furniture, since the supported body is supported by the legs in a cantilever manner,
It has been difficult to provide the mounting portion with mounting strength by the usual mounting method. In addition, when attaching the supported body to the leg by connecting the mounting portion and the mounted portion formed of a cylindrical round pipe member or the like with a fastener, a load was applied to the non-supporting end side of the supported body. In some cases, the supported body may rotate with respect to the leg, and it is necessary to secure the supported body with a plurality of fasteners.

Furthermore, furniture such as chairs and desks is generally
It is desirable to have a tilt function that allows a supported body such as a seat or a top plate to be tilted with respect to the legs at an angle desired by the user. In this way, as a mechanism for imparting a tilt function to furniture, for example, a chair will be described as an example. A pillar supporting a seat and a gas damper arranged between the lower surface of the seat,
The gas damper expands and contracts to adjust the seat inclination, and a screw protrudes upward from an appropriate place below the seat, and a plurality of screw holes that can be screwed into the screw are formed on the lower surface of the seat. There is one in which the seat is held at an appropriate inclination by screwing a screw into a corresponding screw hole in a state where the seat is inclined at an appropriate angle.

Some desks are also provided with a similar tilt mechanism to hold the top plate in an inclined posture and use it as a work table or the like. However, since these tilt mechanisms are provided only to give the furniture a tilt function, the number of parts and the cost have been increased.

[0006]

In order to solve the above-mentioned problems, the present invention relates to a first mounting portion on the leg side and a mounted portion on the supported body side, which are engaged with each other in a mounted state. By disposing the second taper surface at the circumferential position and pulling the mounting portion and the mounted portion toward each other by a fastener, and tightening and coupling, the first and second tapered surfaces are tightened. Taper engagement in the circumferential direction and the circumferential direction to improve the attachment strength between the supported body and the leg and prevent rotation of the supported body with respect to the leg.

[0007]

BEST MODE FOR CARRYING OUT THE INVENTION That is, the present invention relates to a structure for mounting a supported body such as a seat or a top plate which is attached to a leg in a cantilever manner. A first mounting portion, a cylindrical mounting portion to be mounted on the mounting portion disposed on the supported body side, and the mounting portion and the mounted portion respectively engaging with each other in a mounted state. Of the first and second tapered surfaces are tightened in the tightening direction by arranging the taper surfaces of the first and second taper surfaces at a circumferential position and pulling the mounting portion and the mounted portion toward each other by a fastener to tighten them. Also, the taper engagement is performed by closely adhering in the circumferential direction at the same time.

In such a structure, when the supported body is mounted on the leg, the first taper surface on the mounting portion side and the second taper surface on the mounting portion side are made to face each other.
The attachment portion and the attachment portion are pulled close to each other and tightly connected by a fastener. By this tightening connection operation, the first,
The second taper surfaces are in close contact with each other in the tightening direction and the circumferential direction at the same time and taper-engage with each other, so that the mounting portion and the mounting portion are securely and non-rotatably connected to each other. Therefore, it is possible to improve the attachment strength between the leg and the supported body and effectively prevent the supported body from rotating with respect to the leg even when a load is applied particularly to the non-supported end side of the supported body. You can Further, even in such a cylindrical mounting portion and mounted portion, since rotation is prevented, the mounting portion and the mounted portion can be configured by, for example, a pipe member, etc. The cost can be reduced. Also, for example, a plurality of first and second
By arranging the tapered surfaces of the first taper surface at the same pitch and engaging the second tapered surface with the first tapered surface at a shifted pitch, the mounting structure can be provided without separately providing a tilt mechanism. It is possible to perform tilting by using it. Furthermore, even with cantilever support, a certain amount of mounting strength can be obtained, so in furniture such as chairs and desks, it is easy to cantileverly support a supported object such as a seat or tabletop on one leg side. This makes it possible to widen the lower limb space and actively construct a design appearance. It should be noted that the concept of “cylindrical” as referred to in the present specification includes a solid cylindrical shape.

In order to improve the appearance in the mounted state, it is desirable that the mounting portion and the mounted portion have the same diameter, and that the outer peripheral surface be substantially flush with each other in the mounting state. As a specific embodiment, the mounting portion is provided with a first concave portion and a first convex portion that are displaced in the abutting direction with the mounted portion along the circumferential direction, and the first neighboring portion is provided. The first tapered surface is formed between the concave portion and the first convex portion, and the attached portion has a second convex portion and a second convex portion that can engage with the first concave portion and the first convex portion. A second concave portion which is provided with two concave portions and which can be engaged with the first tapered surface between the second convex portion and the second concave portion which are adjacent to each other.
The taper surface can be mentioned.

In order to perform tilting using the mounting structure without separately providing a tilting mechanism for tilting the supported body with respect to the legs, a plurality of first and second taper surfaces are provided respectively. It is preferable that the inclinations of the supported body with respect to the legs are changed by arranging them at equal pitches and engaging the second tapered surface with the first tapered surface while shifting the pitch.

In a concrete embodiment, the mounting portion is
In addition to having an insertion hole for inserting the fastener,
The attached portion is provided with a screw hole that is screwed into the fastening member, and the one fastening member inserted through the insertion hole is screwed into the screw hole, so that the mounting portion and the attached portion are separated from each other. It is desirable to draw them close to each other and tighten them.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. In this embodiment, the mounting structure of the supported body is
A case where the present invention is applied to the chair A as shown in FIG. 1 will be described. As shown in FIGS. 1 to 3, the chair A includes a seat 1, which is a supported body, and a seat receiving member 2 arranged on the rear end side of the bottom surface of the seat 1.
And left and right legs 3 that support the seat 1 in a cantilever manner, and a horizontal member 4 that connects the left and right legs 3 to each other.

The seat 1 has a rectangular shape in a plan view, and has a seat body 11 formed by covering a cushion material with a cover made of a material such as cloth, and a bottom surface of the seat body 11 fixed by appropriate means. The bottom plate 12 made of metal is provided. The seat receiving member 2 is a round pipe member P1 made of metal and having a perfect circular vertical cross section.
A seat receiving member main body 21 and a bracket 22 integrally fixed to the seat receiving member main body 21 by appropriate means such as welding at both ends in the width direction and the central part of the seat receiving member main body 21. The bracket 22 is fixed to the bottom plate 12 of the seat 1 with screws or the like to be fixed to the bottom surface of the seat 1.

The leg 3 is formed by integrally bending a flat bar, which is a solid flat steel material, so as to form a substantially right-angled triangle whose side view has three sides of different lengths. The leg 3 includes first to third leg constituent elements 31 to 33 extending linearly.
And the first to third portions integrally formed by bending the leg constituent elements 31 to 33 so that the outer circumference and the inner circumference form a partial arc shape.
And the corner portions 34 to 36. This leg 3
Of the first to third leg components 31 to 33 is a ground leg component that grounds a monopod component to the floor surface F. At this time, the corner portion facing the ground leg component and the floor surface F are The distance is the height. Then, the mounting direction is changed to change the leg constituent elements that come into contact with the floor surface F so that the height can be changed in three stages.

The horizontal member 4 is made of the same metal round pipe member P1 as the seat receiving member body 21 having a perfect circular vertical cross section, and has only the function of connecting the left and right legs 3. Instead, it can also be used as a leg rest or the like. In such a structure, in the present embodiment, the first to third legs 3 are provided.
The cylindrical mounting portions 5 are arranged at the corner portions 34 to 36, and the mounted portion 6 mounted on the mounting portion 5 is arranged at the widthwise end portion 21a of the seat receiving member 2, and the mounting portions 5 and A first taper surface 7 and a second taper surface 8 which are engaged with each other in the mounted state are respectively arranged on the mounted portion 6 at circumferential positions, and the mounting portion 5 and the mounted portion 6 are mounted. And the second taper surfaces 7 and 8 are brought into close contact with each other in the tightening direction L and the circumferential direction M at the same time to be taper-engaged with each other by pulling and pulling each other together by a bolt B as a fastening tool and tightening and coupling. Thus, the seat 1 is securely and non-rotatably attached to the leg 3. As described above, the height of the leg 3 can be changed in three stages by changing the mounting direction. Therefore, although the mounting portion 5 is disposed in all the corner portions 34 to 36, among the corner portions 34 to 36, the floor surface F is included.
The mounted portion 6 on the side of the seat 1 is attached to the mounting portion 5 of the corner portion facing the grounding leg component that is grounded to, that is, the corner portion having the apex angle.

The structures of the mounting portion 5 and the mounted portion 6 will be specifically described below with reference to FIGS. Note that FIG.
7 to 7, the seat 1 is omitted in order to clarify the configuration in the vicinity of the mounting portion 5 and the mounted portion 6. The mounting portion 5 has an inner end 5a.
A hollow round pipe member P2 having an open end 55 on the side and an outer wall 51 on the outer end 5b side projects the inner end 5a inward from the inner side surface 3a of the leg 3 and forms an outer wall 5
With the outer surface of 1 being substantially flush with the outer surface 3b of the leg 3, its outer peripheral surface is attached to the inner circumferences of the first to third corner portions 34 to 36, and is fixed by welding or the like. It is something.
The mounting portion 5 is formed by piercing the opening end 55 at the center of the outer wall 51 and the first tapered surfaces 7 arranged at four locations along the circumferential direction at the same pitch. And an insertion hole 54 through which the bolt B can be inserted. Mounting part 5
Is a first concave portion 52 and a first convex portion 53 which are displaced in the opening end 55 along the circumferential direction in the direction of butting with the attached portion 6.
And the first tapered surface 7 is formed between the first concave portion 52 and the first convex portion 53 which are adjacent to each other.

The attached portion 6 is constructed by utilizing the widthwise end portion 21a of the seat receiving member main body 21, and has a circumference at the opening end 65 at a pitch equal to that of the first tapered surface 7. A second taper surface 8 arranged at four positions along with a screw hole which is fixed by welding or the like at a position slightly inward from the opening end 65 and is screwed into the bolt B. And a plate nut 61 having 62 arranged in the center. In addition,
The round pipe member P2 forming the mounting portion 5 has the same diameter as the round pipe member P1 forming the seat receiving member body 21, and the outer peripheral surfaces of the mounting portion 5 and the mounted portion 6 are substantially in the mounted state. It will be the same. The attached portion 6 is attached to the opening end 65 at
The second convex portion 63 and the second concave portion 64, which are respectively engageable with the first concave portion 52 and the first convex portion 53 of the mounting portion 5, are provided, and the adjacent second convex portions are provided. The second tapered surface 8 is formed between the portion 63 and the second recess 64.

A procedure for attaching the seat 1 to the leg 3 in the above-mentioned structure will be described. First, FIG.
As shown in FIG. 6, with the first and second taper surfaces 7 and 8 facing each other, the mounted portion 6 is brought closer to the mounting portion 5, and as shown in FIG. After engaging the second convex portion 63 of the supported portion 6 with the concave portion 52 and the second concave portion 64 with the first convex portion 53, as shown in FIGS. 6 and 7,
Bolt B inserted into the insertion hole 54 from the outer surface 3b side of the leg 3
Is screwed into the screw hole 62 to draw the attachment portion 5 and the attachment portion 6 toward each other and tightly connect them. At this time, as shown in FIGS. 7 to 9, the first taper surface 7 and the second taper surface 8 are in close contact with each other in the tightening direction L and the circumferential direction M at the same time and are in taper engagement. Thus, since the first and second tapered surfaces 7 and 8 are firmly connected in the tightening direction L and the circumferential direction M, a high mounting strength is obtained and the mounted portion 6 to the mounting portion 5 is attached.
Will be prohibited from rotating. In this way, even with cantilever support, a certain mounting strength can be obtained, so that in the chair A, it is possible to easily realize cantilever support of the seat 1 on the leg 3 at one end side, and to widen the lower limb space. , It becomes possible to actively construct a design-like appearance. Moreover, even if the mounting portion 5 and the mounted portion 6 are configured by using cylindrical members, rotation is prevented, so that the mounting portion 5 as in the present embodiment.
Also, the attached portion 6 can be configured by using the pipe members P1 and P2, and the weight and cost of the entire chair A can be reduced.

Further, in the above-mentioned one, the first and second tapered surfaces 7 and 8 are arranged at a relatively large pitch.
These first and second taper surfaces 7 and 8 are arranged at a relatively small pitch at equal intervals, and the first taper surface 7 is rotated by rotating the mounting portion 5 with the mounted portion 6 removed. On the other hand, by engaging the second tapered surface 8 with a shifted pitch, it is possible to change the inclination of the seat 1 with respect to the leg 3 by several steps as shown in FIG. in this way,
Even if a tilt mechanism is not separately provided, the mounting structure can be used for tilting, and the number of parts can be reduced.

In this embodiment, the attached portions 6 are arranged at both ends of the horizontal member 4 in the width direction, and the seat 1 is attached to the leg 3
On the mounting part 5 of the corner part other than the corner part where the
The horizontal member 4 is attached in the same manner. Since the mounting portion 5 and the mounted portion 6 have the same diameter and the outer peripheral surfaces are substantially flush with each other in the mounted state, the appearance in the mounted state can be improved.

The mounting portion 5 has a mounting portion 6 along the circumferential direction.
A first concave portion 52 and a first convex portion 53 which are displaced in the direction of butting with each other, and the first tapered surface 7 is provided between the first concave portion 52 and the first convex portion 53 which are adjacent to each other. The attached portion 6 is provided with a second convex portion 63 and a second concave portion 64 which can be engaged with the first concave portion 52 and the first convex portion 53, and which are adjacent to each other. Since the second tapered surface 8 that can be engaged with the first tapered surface 7 is formed between the second convex portion 63 and the second concave portion 64, the taper engagement is ensured with a simple configuration. It is possible to form a tapered surface that can realize high attachment strength and rotation prevention.

The mounting portion 5 is provided with an insertion hole 54 through which the bolt B is inserted, and the attached portion 6 is provided with a screw hole 62 which is screwed into the bolt B. Since the one bolt B inserted from the above is screwed into the screw hole 62, the mounting portion 5 and the mounted portion 6 are pulled toward each other to be tightly coupled to each other.
It is possible to attach the seat 1 to the leg 3 with high attachment strength by simply tightening in one direction by utilizing, and the number of parts can be reduced.

The specific structure of each part is not limited to the above-mentioned embodiment. For example, in this embodiment, the mounting portion 5 is fixed to the leg 3 by welding or the like.
The mounting part 5 is a separate body that can be attached to and detached from the leg 3,
The leg 3 may be non-rotatably attached by an appropriate means. In addition, in the present embodiment, the first and second tapered surfaces 7 and 8 are formed by utilizing the open ends of the outer peripheral walls of the attachment portion 5 and the attachment portion 6, but the attachment portion 5 and the attachment portion 6 are not formed. An inner peripheral wall is provided inside the outer peripheral wall of the mounting portion 6, and first and second tapered surfaces are formed on the inner peripheral wall. When the mounting portion 5 and the mounted portion 6 are brought into contact with each other, these first, The engagement of the second tapered surface may be hidden from the outside. Alternatively, the outer peripheral wall may be provided only on one of the mounting portion and the mounted portion, and the outer peripheral wall may extend in the abutting direction than the inner peripheral wall having the tapered surface. With this configuration, the tightening operation can be performed while the attachment portion and the attachment portion are temporarily held.

Further, in this embodiment, the case where the structure for mounting the supported body of the present invention is applied to the chair has been described.
Of course, this mounting structure may be applied to a desk. Especially for desks, the tilt function utilizing the above-described mounting structure is effective. Further, in the present embodiment, the attached portion 6 is arranged at a position close to the bottom surface of the seat 1. However, an appropriate supporting member is interposed between the attached portion 6 and the seat 1 to attach the attached portion. 6 may be arranged at a position separated from the seat 1. Furthermore, the horizontal member 4 does not necessarily have to be provided.

In addition, the configuration of each part can be variously modified without departing from the spirit of the present invention.

[0026]

The present invention is carried out in the form as described above, and has the following effects. That is, the present invention is a mounting structure of a supported body for cantileverly mounting a supported body such as a seat or a top plate on a leg, and a cylindrical mounting portion is provided on the leg side and a cylindrical mounting portion is provided on the supported body side. , A cylindrical attached portion to be attached to the attaching portion is provided, and first and second tapered surfaces that engage with each other in the attached state are attached to the attaching portion and the attached portion at circumferential positions. And the attached portion and the attached portion are pulled together by a fastener to be tightly coupled to each other, so that the first and second tapered surfaces are brought into close contact at the same time in the fastening direction and the circumferential direction. By making the taper engagement, the mounting strength between the leg and the supported body is improved, and even when a load is applied to the non-supported end side of the supported body, it is possible to effectively rotate the supported body with respect to the leg. Can be prevented. Therefore, with a simple structure, it is possible to securely and non-rotatably cantileverly support a supported object such as a seat or a top plate, and in furniture such as a chair or a desk, the seat or the top plate is attached to the leg at one end side. Can be supported in a cantilevered manner to widen the space of the lower limbs and to obtain a design-like appearance positively.

If the mounting portion and the mounted portion have the same diameter and the outer peripheral surface is substantially flush with each other in the mounted state, the appearance in the mounted state can be improved. The mounting portion is provided with a first concave portion and a first convex portion that are displaced in the abutting direction with the mounted portion along the circumferential direction, and between the first concave portion and the first convex portion that are adjacent to each other. The first tapered surface is formed on the first concave surface, and the attached portion is formed on the first concave portion and the first concave surface.
A second convex portion and a second concave portion that can be engaged with the convex portion of the second convex portion, and the first tapered surface can be engaged between the adjacent second convex portion and the second concave portion. If the second taper surface is formed, it is possible to form the taper surface that can surely achieve the taper engagement and realize the high attachment strength and the prohibition of rotation with a simple configuration.

By disposing a plurality of first and second tapered surfaces at equal pitches and engaging the second tapered surface with the first tapered surface at a shifted pitch, the supported body for the leg is supported. If the tilt is changed, it is possible to perform the tilt using the mounting structure without separately providing a tilt mechanism that can tilt the supported body with respect to the leg, and the number of parts can be reduced. Can also be achieved.

The mounting portion is provided with an insertion hole through which the fastening member is inserted, and the attachment portion is provided with a screw hole which is screwed into the fastening member, and is inserted through the insertion hole. By screwing one fastener to the screw hole, if the attachment portion and the attached portion are pulled together and tightened, simply use one fastener and tighten in one direction. It is possible to attach the supported body to the legs with high attachment strength, and it is possible to reduce the number of parts.

[Brief description of drawings]

FIG. 1 is an overall perspective view showing an embodiment of the present invention.

FIG. 2 is an exploded perspective view of the same.

FIG. 3 is a side view of the same.

FIG. 4 is an exploded perspective view of the relevant part.

FIG. 5 is an explanatory view of the same operation.

FIG. 6 is an explanatory view of the same operation.

FIG. 7 is an explanatory view of the same operation.

FIG. 8 is an enlarged view of the relevant part.

FIG. 9 is an enlarged perspective view of the relevant part.

FIG. 10 is a side view showing a state in which the seat is tilted by an imaginary line.

[Explanation of symbols]

1 ... Supported body (seat) 3 ... legs 5 ... Mounting part 52 ... First recess 53 ... 1st convex part 54 ... Insertion hole 6 ... Mounted part 62 ... screw hole 63 ... Second convex portion 64 ... Second recess 7 ... First tapered surface 8 ... Second taper surface B: Fastener (bolt)

─────────────────────────────────────────────────── ─── Continuation of the front page (58) Fields surveyed (Int.Cl. ⁷ , DB name) F16B 12/00-12/60 F16B ⁷ /00-7/22 A47B 96/06 A47C 11/00

Claims (5)

(57) [Claims] 1. A mounting structure of a supported body for cantileverly mounting a supported body such as a seat or a top plate on a leg, wherein a cylindrical mounting portion is provided on the leg side, and a cylindrical mounting portion is provided on the supported body side. While disposing a cylindrical mounted portion to be mounted on the mounting portion,
First and second taper surfaces, which engage with each other in the mounted state, are arranged at circumferential positions on the mounting portion and the mounted portion, respectively, and the mounting portion and the mounted portion are fixed to each other. The first and second tapered surfaces are brought into close contact with each other in the tightening direction and the circumferential direction at the same time to be taper-engaged with each other. 2. The mounting structure for a supported body according to claim 1, wherein the mounting portion and the mounted portion have the same diameter, and the outer peripheral surfaces are substantially flush with each other in the mounted state. 3. The mounting portion comprises a first concave portion and a first convex portion which are displaced in the direction of butting with the mounted portion along the circumferential direction, and the first concave portion and the first concave portion which are adjacent to each other are provided. The first tapered surface is formed between the first convex portions, and the attached portion includes the second convex portion and the second concave portion that can engage with the first concave portion and the first convex portion. The second taper surface which can be engaged with the first taper surface is formed between the adjacent second convex portion and second concave portion. The structure for mounting the supported body described. 4. A plurality of first and second taper surfaces are arranged at equal pitches, and a second taper surface is engaged with the first taper surface at a shifted pitch so as to be engaged with the leg. The mounting structure for a supported body according to claim 1, 2 or 3, wherein the inclination of the supporting body is changed. 5. The mounting portion has an insertion hole through which the fastening member is inserted, and the attached portion has a screw hole that is screwed into the fastening device. 5. The supported object according to claim 1, 2, 3 or 4, wherein the one fastener that is inserted is screwed into the screw hole to draw the attachment portion and the attachment portion toward each other and tightly connect them. Body mounting structure.