JPH0446125B2 - - Google Patents

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to an adjustable foot that is screwed onto the end of a leg of furniture, and in particular, the present invention relates to an adjustable foot that is screwed onto the end of a leg of furniture. The present invention relates to an adjustable foot for furniture that allows the height of the foot to be easily adjusted with respect to a furniture mounting surface such as the like.

[Prior art] Furniture feet are screwed onto furniture such as desks, tables, chairs, floor-standing business furniture, etc., and are stabilized by adjusting the height of the furniture relative to the mounting surface. A variety of furniture feet are already available that allow for easy installation. As one of these conventional examples, the present applicant's application filed in 1983 is
-There is No. 66968. This known furniture leg is made by assembling a metal male threaded leg and a plastic leg base with a rounded surface, and a rotation drive groove for the threaded leg is provided on the lower side of the leg facing the floor, and the end of the furniture leg is When attaching the screw leg to the screw leg, a tool is installed in the drive groove, and the screw leg is rotated while holding the leg base, and the height can be adjusted by using a wrench tool. The screw leg is rotated by rotating the nut attached to or integrally formed with the lower end of the screw leg, and at this time, the lower part of the nut comes into line contact with the rounded surface of the leg base visible from the outside, allowing adjustment and rotation with relatively little resistance. This is how it was done.

[Problem to be solved by the invention]

However, the above structure requires tools, such as loading a tool into the drive groove and rotating it, and using a wrench to rotate the height adjustment. However, in order to adjust and rotate under a load using line contact, there is still a large resistance and a lack of ease of operation. Therefore, in view of this lack of ease of operation, an object of the present invention is to provide a furniture adjustment leg that can be attached to a furniture leg and has easier height adjustment operability. It is.

[Means of solution and action]

That is, in view of the above-mentioned purpose, the present invention provides a structure in which a protruding shaft having a lower end plane is directed downward at the central part of the back side of a body section which is erected around a screw stud that is screwed into the leg end or bottom end of furniture. a foot body provided with an engaging edge on a peripheral edge surrounding the protruding shaft with a groove in between;
It comprises an outer wall portion having a plurality of hook claws that engage with the engaging edge of the foot body, and an inner wall portion with a bottom that stands upright inside the outer wall portion, and the bottom surface of the inner wall has a lower end plane of the protruding shaft. Equipped with multiple point-shaped support seats that make point contact,
To provide an adjustable foot for furniture, comprising a resin foot seat which is rotatably assembled with the inner wall facing the groove of the foot body, and whose height can be adjusted by light rotation of the foot body. When the foot body is manually operated to screw the screw stud into the furniture, and then the foot body is rotated as it is, the gap between the resin material between the flat plate surface of the lower end of the protruding shaft and the dotted support seat of the resin foot seat is Thanks to the low resistance caused by point contact, the foot body can easily rotate even under heavy loads, allowing height adjustment to be performed with excellent operability. Preferably, if a vibration-absorbing plate made of a vibration-absorbing material is attached to the bottom side of the resin foot seat with claw engagement, vibrations from the floor can be absorbed and , it can have an anti-slip function. Hereinafter, the present invention will be described in more detail based on embodiments shown in the accompanying drawings.

〔Example〕

FIG. 1 is a half-sectional view showing the entire assembled state of a furniture leg according to one embodiment of the present invention, and FIG.
The figure is a perspective view showing a state in which each part of the furniture leg is disassembled and separated.

In FIGS. 1 and 2, an adjustable foot 10 for furniture according to an embodiment of the present invention includes a foot body 20, a foot seat 40,
These three separate members are assembled together after manufacturing to constitute the adjustment leg 10. The leg body 20 preferably includes a body 22 made of a synthetic resin material and a male threaded metal stud 24 erected upward from the upper surface of the body 22. The stud 24 uses a commercially available iron hexagonal head bolt screw, and this hexagonal head bolt screw is inserted into a recessed hole drilled in the center of the upper surface of the body 22 and glued, or the stud 24 is attached to the body 22. It is firmly fixed to the body part 22 by being embedded integrally during injection molding. The screw studs 24, which are integrally fixed to the body 22, are screwed into female threaded holes drilled in the lower end surfaces of the legs and bottoms of furniture to form furniture legs. The body portion 22 has a cylindrical shape in this example, and the circumferential side surface 26 thereof is provided with knurls or unevenness for preventing slipping, so that the furniture legs can be provided with a cylindrical shape as described above.
This allows manual screwing operation when screwing in the threaded stud 24 of the leg body 20.
It also has a decorative function. An annular wall-shaped engagement edge 28 is formed at the lower peripheral edge of the circumferential side surface 26 of the body portion 22, and the engagement edge 28 has a hook portion 28a at the lower end and preferably has a hook portion 28a from the bottom to the top. It has a conical surface 28b extending to. A groove 30 is formed in a circumferential shape inside the engaging edge 28.
A cylindrical protruding shaft 32 extending downward is provided at the center portion of the inner side separated by the groove 30. The groove bottom of the groove 30 is formed into a flat surface. The protruding shaft 32 has a lower end surface 34 formed into a hard flat surface,
It forms a sliding surface that slides into contact with the foot seat 40 during rotation for height adjustment, which will be described later. The above-mentioned screw stud 24 has its head embedded in the protruding shaft 32 and is erected upward from the body 22. On the other hand, the foot seat 40 is attached to the foot body 2.
Like the body part 22 of No. 0, it is a resin part processed by a molding method using a synthetic resin material, preferably a resin material having hardness, impact resistance, and low friction resistance, such as nylon or polycarbonate. Here, the second
As clearly shown in the figure, this foot seat 40 is formed as a cylindrical object, and has an outer wall portion 42 .
a plurality of inward hook claws 44 provided on the upper edge of the
A hollow cylindrical bottomed inner wall section 48 is provided, which stands apart from the outer wall section 42 and the groove 46 , and a plurality of dot-like support seats 50 are provided on the bottom surface of the inner wall section 48 .
A plurality of support points 52 are also provided on the top surface of 8. Note that the support point 5 formed on the top surface of the inner wall portion 48
2 may alternatively have an annular structure with a semicircular cross section on the outer top surface.

Now, this foot seat 40 is a seat component that is assembled from the lower side of the foot main body 20, and the hook claw 44 is hook-engaged with the hook portion 28a of the engagement edge 28 of the body portion 22. The structure is such that the main body 20 and the foot seat 40 are connected, so that the hook claw 44 is elastically deformed when engaged and firmly engages with the mating hook portion 28a. At this time,
The inner tip of the hook pawl 44 is preformed to have a slope 44a, and is configured to elastically deform while sliding on the conical surface 28b of the mating hook portion 28a, thereby achieving smooth hook engagement.

On the other hand, the point-like support seat 50 on the bottom surface of the inner wall portion 48 is
A plurality of pieces are distributed along approximately the same circle, and the main body 2
When the foot seat 40 and the foot seat 40 are assembled by the hook engagement described above, they form a support seat that supports the lower end surface 34 of the protruding shaft 32 on the main body 20 side while being in mutual point contact. In other words, the contact area is significantly reduced compared to surface contact, and the main body 20 is supported so as to be easily rotated with respect to the foot seat 40. In addition, in order to maintain this lightness of rotation and to sufficiently support the foot seat 40 even when the main body 20 is loaded with a load while the main body 20 is being used as a furniture leg, the top surface of the inner wall portion 48 is connected to the trunk portion 22 of the main body 20. The support point 52 is designed to contact and engage with the groove bottom surface of the concave groove 30 at the support point 52 . In addition, since the foot seat 40 has a cylindrical structure having two inner and outer walls 42 and 48, it can also have sufficient mechanical rigidity.

With the main body 20 and foot seat 40 described above,
Although the basic function as a furniture leg can be achieved, the present invention preferably also includes a structure in which the vibration absorbing plate 60 is attached to the back side of the foot seat 40. That is, a plurality of engagement holes (not shown) are drilled in advance in the bottom surface of the groove 46 of the foot seat 40, and a second hole is inserted into these holes.
A hook claw 62 provided on the top of the absorption plate 60 shown in the figure
The absorbing plate 60 itself has vibration absorbing properties to prevent vibrations from being transmitted to the furniture from the floor or other installation surface when the furniture foot 10 is attached to the furniture. It is formed as a relatively thin member by molding a material such as synthetic rubber such as urethane rubber or vinyl acetate.
Note that this vibration absorbing plate 60 also has the function of an anti-slip component, and can also prevent furniture from slipping off when it is installed on a high level surface. In this way, if the absorbing plate 60 is provided in advance as an accessory part corresponding to the purpose of the furniture leg 10 in a freely detachable manner, it can be easily removed when not in use.

Adjustable foot 10 for furniture having the configuration described above
The effect of this will be explained below.

That is, when attaching the adjustable leg 10 to a furniture leg or the like, the threaded stud 24 of the separated leg body 20 is attached to the female threaded hole of the other leg while holding and rotating the body part 22. Next, the leg body 20
The foot seat 40 is engaged with the hook from the bottom side. All that is required is to carry out such operations on the necessary number of adjustment feet 10 and to attach them to the furniture. and,
After placing the furniture on the floor etc., place the footrest 4.
0 by hand, hold and rotate the grooved circumferential side surface 26 of the body 22 to adjust the screwing amount of the threaded stud 24 and adjust the height.
In this way, after adjusting the height, adjust the absorbing plate 60 as necessary.
It can be attached by engaging the hook. Thus,
This furniture adjustable foot 10 can be easily attached to furniture or the like without using any tools or the like.

Although the main body 20 has a cylindrical shape in the illustrated embodiment, it can also have a rectangular outer shape if necessary, and the bottom side may have an engaging edge 28 for mounting the circular foot seat 40, a groove 30, etc. It is good to have a . Moreover, although the above-mentioned resin material is preferable, the material can also be formed using a metal material having moldability and lightness, such as aluminum material.

〔Effect of the invention〕

As is clear from the above description based on the implementation, according to the present invention, the adjustable feet to be attached to the end of the legs, the bottom surface, etc. of furniture can be easily attached by hand, and when adjusting with respect to the floor surface, rotation operation can be performed. Since the friction resistance is low due to point contact, it is possible to provide furniture legs with excellent operability that allow easy adjustment even under load conditions due to the weight of the furniture. In addition, since the adjustment rotation surface is configured to be performed inside the main body and the foot seat, it is possible to provide an aesthetic appearance.

[Brief explanation of the drawing]

FIG. 1 is a half-sectional view showing the entire assembled state of a furniture leg according to one embodiment of the present invention, and FIG.
The figure is a perspective view showing the parts of the furniture leg disassembled and separated. 10... Adjustable foot for furniture, 20... Leg body, 22
...Body part, 24...Threaded stud, 28...Engaging edge, 30...Protruding shaft, 40...Foot seat, 42...Outer wall part, 44...Hook claw, 48...Inner wall part, 50
...Point support seat, 60...Absorption plate.

Claims (1)

[Scope of Claims] 1. A protruding shaft with a flat lower end is provided facing downward in the center of the back side of the trunk, which is erected around a screw stud that is screwed into the leg end or bottom end of furniture, and the protruding shaft is recessed. A foot body having an engaging edge formed on the peripheral edge surrounding the groove, an outer wall portion having a plurality of hook claws that engage with the engaging edge of the foot body, and a bottom that stands upright inside the outer wall portion. The bottom surface of the inner wall is provided with a plurality of dot-shaped support seats that make point contact with the lower end plane of the protruding shaft, and the inner wall is rotatably assembled with the inner wall facing the groove of the resin main body. 1. An adjustable foot for furniture, comprising a resin foot seat, the height of which can be adjusted by light rotation of the foot body. 2. A plurality of claw holes are formed in the bottom of the groove between the outer wall portion and the inner wall portion of the resin foot seat, and engaging claws are inserted into the claw holes from the lower surface side of the resin foot seat. The adjustable foot for furniture according to claim 1, characterized in that it is configured such that a vibration absorbing plate made of a vibration absorbing material having a vibration absorbing plate can be attached thereto.