JPH078892Y2 - Home Gotatsu leg - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a leg for a home tattoo.

[Problems to be solved by conventional techniques and devices]

The conventional leg for home kotatsu is detached from the side frame of the kotatsu body and stored when the kotatsu is not used. In other words, since the legs are screwed to the kotatsu side frame, removal is troublesome and very troublesome.

It is an object of the present invention to provide a leg for a home kotatsu, which can be bent easily and quickly without removing the leg from the kotatsu body and which does not disturb the leg during storage.

[Means for Solving the Problems]

In order to achieve the above-mentioned object, a leg for a home kotatsu according to the present invention includes a leg root part fixed to an upper surface frame and a leg main body part connected to the leg root part. A leg; for an arc-shaped upper locking pin in which a pair of upper and lower locking pins are attached to the upper end of the leg main body, and the upper locking pin is movably guided and guided to the root of the leg. A groove for the lower locking pin is provided, which is a fulcrum part of the movement of the groove and the lower locking pin in the groove for the upper locking pin, and the upper end of the groove for the upper locking pin. The upper locking pin is vertically connected to and connected to a linear upper guide groove, and the lower locking pin is vertically guided and positioned above the outer end portion of the lower locking pin groove. The linear lower guide groove is connected and connected, and the radius of curvature of the outer peripheral edge of the groove for the upper locking pin is made larger than the radius of curvature of the inner peripheral edge. Together, the respective center positions of the radii of curvature are made different so that the upper end portion of the upper locking pin groove is set wider than the lower end portion, and the lower locking pin groove has a lower end edge. A notch is provided so that the outer end of the groove for the lower locking pin is set wider than the inner end, and the groove is locked to the lower locking pin to elastically push the lower locking pin upward. An elastic member attached is fixed to the root portion of the leg.

[Action]

When the upper locking pin is inserted into the upper end of the upper locking pin groove and the lower locking pin is inserted into the outer end of the lower locking pin groove, the lower locking pin is Since it is pushed upward, each locking pin is inserted into each guide groove, and the leg body holds the vertical shape without swinging. If the leg body is pulled downward against the elastic force of the elastic member, the upper locking pin will enter the upper end of the upper locking pin groove, and the lower locking pin will be the lower locking pin. Will enter the outer end of the groove,
In this state, the leg body can be swung, and when the leg body is swung, the upper locking pin moves in the upper locking pin groove to reach the lower end of the groove, The leg body is bendable. Further, if the leg main body is swung so that the upper locking pin reaches the upper end of the upper locking pin groove from the bent state, the upper locking pin will move into the locking pin groove. When reaching the upper end, the upper and lower locking pins are pushed up by the elastic force of the elastic member, each locking pin is locked to the upper end of each guide groove, and the leg body becomes vertical. .

When the folded state is changed to the vertical state, the lower locking pin moves from the inner end portion to the outer end portion in the vicinity of the upper end portion of the upper locking pin groove, whereby the upper locking pin is moved. Tries to draw a large arc, but the upper end of the upper locking pin groove is set wider than the lower end, and the outer end of the lower locking pin groove is set wider than the inner end. Therefore, the upper and lower locking pins are not in a state of being stretched in each groove, and the upper locking pin can smoothly move in the groove for the upper locking pin.
On the contrary, in the case of changing from the vertical shape to the folded shape, similarly, the upper locking pin can smoothly move in the groove for the upper locking pin.

〔Example〕

An embodiment will be described with reference to the drawings. FIG. 1 shows a case where a leg for a home rattling according to the present invention is attached to an upper surface frame 11 indicated by an imaginary line, and the leg is connected with a bolt or the like. Ingredient
The leg base portion 7 fixed to the lower protruding portion 13 of the upper surface frame 11 at 12
And a leg body 1 which is foldably connected to the leg root portion 7 via vertical locking pins 3 and 4. Figure 1 and 2
As shown in the drawing, specifically, the leg root portion 7 includes a covering member 14 made of plastic or the like, and a fixing member 15 made of metal or the like inserted into the covering member 14. In addition, by screwing the connecting member 12 into the screw hole 16 provided in the fixing member 15, both the fixing member 15 and the covering member 14 are attached to the upper frame 11.
Is stuck to. The leg body 1 is, as shown in FIG.
A covered support leg member 17 made of plastic or the like and a rotating member 18 made of metal or the like fixed to the support leg member 17 are provided. The rotating member 18 is internally fixed to the upper end space of the supporting leg member 17. A locking projection 39 is provided on the upper edge of the supporting leg member 17.

Then, in FIG. 1 and FIG. 2, the upper end portion 2 of the leg main body portion 1 is provided with vertical locking pins 3 and 4 which are parallel to each other.
The fixing member 15 of the root portion 7 of the leg has an arc-shaped upper locking pin groove 5 and a lower locking pin groove into which the lower locking pin 4 is inserted so that the upper locking pin 3 is movably guided. 6 is provided. The lower locking pin groove 6 serves as a fulcrum of movement in the upper locking pin groove 5 for the upper locking pin 3.

The radius of curvature R ₁ of the outer peripheral edge 42 of the upper locking pin groove 5 is
The radius of curvature R ₂ is set to be larger than the radius R ₂ of the inner peripheral edge 43, and the centers O ₁ and O _{2 of the} radii of curvature R ₁ and R ₂ are different (that is, the center O ₂ is outside the center O ₁ ). Thus, the upper end 5a of the upper locking pin groove 5 is set wider than the lower end 5b.

Further, the upper locking pin 3 is provided at the upper end 5a of the upper locking pin groove 5.
A linear upper guide groove 10 that guides and guides in the vertical direction is connected and connected, and a straight line that guides and guides the lower locking pin 4 in the vertical direction is provided above the outer end portion 6a of the lower locking pin groove 6. The lower guide groove 9 is communicated and connected. The upper guide groove 10 and the lower guide groove 9 are arranged on the same straight line, but of course they may be arranged on parallel straight lines without being arranged on the same straight line. It is also free to dispose one or both of the guide grooves 9 and 10 with a slight inclination with respect to the vertical direction.

Further, a cutout portion 19 is provided at a lower end edge of the lower locking pin groove 6, and the lower locking pin groove 6 has an outer end portion 6a at an inner end portion 6b.
It is set wider.

Next, 8 and 8 are elastic members made of springs or the like that are curved in a substantially L shape, and one end of the elastic member 8 has a leg base portion 7
The other end 20 which is fixed to the fixing member 15 and has a bent shape is locked in a circumferential groove 21 formed at the end of the lower locking pin 4, whereby the lower locking pin is 4 is always elastically urged upward, and the lower locking pin 4 is prevented from coming out.

Then, as shown in FIG. 4, the fixing member 15 has the right and left side plates.
A projecting piece 25, 25 formed by bending a part of 23, 24 sideways
Is provided with through holes 26, 26 to which one end of the elastic member 8 is fixed, and a rectangular fitting hole 28 is provided through the bent projecting piece 27 at the upper end of the rear plate 38. Has been done.

Further, the upper locking pin 3 is attached to the left and right side plates 29, 30 of the rotating member 18.
Support holes 31, 31 through which both ends of the left and right side plates 29, 31 are inserted.
Retaining holes 33 through which both ends of the lower locking pin 4 are inserted and supported are respectively formed in the projecting pieces 32, 32 formed in a bent shape at the rear end portion of 30. Reference numerals 34 and 35 are fasteners such as screws, and the fasteners 34 and 35 pass through the screw holes 36 and the screw holes 40 of the projecting pieces 37 and 37 for mounting. The fixing member 35 prevents the turning member 18 from slipping off.
Are fixed to the coated supporting leg member 17. The projecting pieces 37, 37 of the rotating member 18 are fixed by the fastener 35 in a state of being in contact with the lower surface 22a (see FIG. 1) of the flat portion 22 of the supporting leg member 17.

Then, when used, as shown in FIG. 1, the leg body 1 is orthogonal to the upper frame 11, but in this case,
The upper locking pin 3 is inserted into the upper guide groove 10, and the lower locking pin 4 is inserted.
Is inserted into the lower guide groove 9, and the lower locking pin 4 is pushed up by the elastic force of the elastic member 8 so that the lower locking pin 4 is locked to the upper end of the lower guide groove 9. .

Therefore, the leg body 1 maintains this state without swinging. Further, in this state, the locking protrusion 39 is the fixing member.
It is fitted and locked in the fitting hole 28 of 15. That is, the right and left shaking of the leg body 1 is reliably prevented.

Then, in order to bend the leg main body 1 from the state shown in FIG. 1, first, as shown in FIG. 5, the leg main body 1 is resisted against the elastic force of the elastic member 8 and indicated by the arrow A. So pull downwards. At this time, the upper locking pin 3 moves downward in the upper guide groove 10, and the lower locking pin 4 moves downward in the lower guide groove 9. Next, as shown in FIG. 6, when the leg body 1 is pulled, the upper locking pin 3 is swung about the lower locking pin 4 as shown by the arrow B, so that the upper locking pin 3 becomes a groove for the upper locking pin. 5 moves along an arcuate locus, and at the same time, the lower locking pin 4 moves in the horizontal groove portion of the locking groove 6.
While moving inside 19 toward the inner end 6b side, as shown in FIG. 7, it is locked to the inner end 6b. In this way, as shown in FIG. 7, when the leg body 1 is bent horizontally, the upper locking pin 3 is attached to the lower end portion 5b of the upper locking pin groove 5 by the lower engaging member. The stop pins 4 are retained in the respective inner ends 6b of the lower locking pin grooves 6 in a locked state. In this state, the leg body does not swing in the direction of arrow B (see FIG. 6) anymore, so the lower end of the leg body 1 does not approach the upper frame 11 any more and is not used. Even when the leg body 1 swings, the heater or the like (not shown) in the central portion of the upper frame 11 will not be hit and damaged, and in this state, the concave portion provided on the inner surface of the covering member 14 will not be damaged. The locking projection 39 of the leg body 1 is locked in the recess 71, whereby the folded posture is maintained. The engagement and disengagement are performed by elastic deformation of the covering member 14.

Then, if the leg body 1 is swung in the direction of arrow C from the state of FIG. 7 showing the folded state and the upper locking pin 3 is positioned at the upper end 5a of the upper locking pin groove 5, Due to the elastic force of the elastic member 8, the upper locking pin 3 enters the upper guide groove 10 and the lower locking pin 4
Enters the lower guide groove 9 and enters the state shown in FIG.

Then, if the leg body 1 is swung in the direction of arrow C from the state shown in FIG.
It moves in the upper locking pin groove 5 around, but after that,
Further swing, the upper locking pin 3 within the range M shown in FIG.
When is moved, the lower locking pin 4 starts to move slightly obliquely downward in the lower locking pin groove 6 toward the outer end portion 6a. Therefore, the swing center of the upper locking pin 3 moves outward. Accordingly, in the range M, the upper locking pin 3
The arc-shaped locus drawn by is large. However, in the upper locking pin groove 5, the upper end 5a is set wider than the lower end 5b, and the lower locking pin groove 6 has an outer end 6a in the inner end.
Since it is set wider than 6b, the vertical locking pin 3,
The upper locking pin 3 moves smoothly in the upper locking pin groove 5 without the 4 protruding in the respective grooves 5 and 6.

On the contrary, even when the leg body 1 is folded from the vertical state, similarly, the vertical locking pins 3 and 4 do not project,
The upper locking pin 3 moves smoothly in the groove 5 for the upper locking pin.

In the present invention, since the operation lever for bending operation is not necessary, the bending mechanism is extremely simple.
In addition, it can be said that the external appearance is excellent because part of the internal mechanism is not exposed to the outside.

The present invention is not limited to the above-described embodiment, and the design can be freely changed without departing from the gist of the present invention. For example, the cutout portion 19 of the lower engaging pin groove 6 is formed by cutting out in an arc shape. However, it is free to form notches in the shape of a cheeper, and in the state shown in FIG. 1, the upper locking pin 3 is in contact with the upper end edge of the upper guide groove 10, but it is not always necessary to contact it. Absent.

[Effect of device]

Since the present invention is configured as described above, it has the effects described below.

In the used state (state shown in Fig. 1), the vertical locking pin 3,
4 is securely inserted into the guide grooves 10 and 9, and the leg body 1 does not rattle.

In the unused state (state shown in FIG. 7), the leg body 1
Does not approach the upper surface frame 11 any more and does not damage the heater or the like.

The leg body 1 can be swung at all times because the upper and lower pins 3 and 4 do not project, and the leg body 1 can be folded and erected easily and quickly with one hand. .

The operation mechanism for bending is extremely simple, and it is robust without failure.

Since it is not necessary to provide an operating lever, an operating knob, or the like on the upper side of the upper surface frame 11 or at any other place, there is no trouble that these are an obstacle during use, and it is preferable in terms of appearance.

With the legs bent, it can be used as a low table such as a low dining table, which is convenient.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a sectional side view of an essential part showing an embodiment of the present invention, and FIG.
FIG. 3 is a perspective view of a main part, FIG. 3 is a perspective view of a main part of a leg body, and FIG.
The figure is an exploded perspective view of essential parts, and FIGS. 5, 6, and 7 are explanatory views of operation. DESCRIPTION OF SYMBOLS 1 ... Leg body part, 2 ... Upper end part, 3 ... Upper locking pin, 4 ... Lower locking pin, 5 ... Groove for upper locking pin, 5a ... Upper end part, 5b ... Lower end part, 6 ... Lower locking pin use grooves, 7 ... leg base unit, 8 ... elastic member, 11 ... top frame, 19 ... notch, 42 ... outer circumferential edge, 43 ... inner circumferential edge, R _1, R ₂ ... curvature radius, O _1, O ₂ ... center.

Claims (1)

[Scope of utility model registration request] 1. A leg for a home kotatsu comprising a leg root portion 7 fixed to an upper surface frame 11 and a leg main body portion 1 connected to the leg root portion 7. A pair of upper and lower locking pins 3 and 4 are attached to the upper end portion 2, and an arc-shaped upper locking pin groove 5 and a lower groove 5 for guiding the upper locking pin 3 to the leg base portion 7 are movably guided. The lower locking pin groove 6 is provided in which the locking pin 4 is inserted and serves as a fulcrum part of the movement in the upper locking pin groove 5 of the upper locking pin 3.
Further, a linear upper guide groove 10 through which the upper locking pin 3 is vertically guided and guided is connected to the upper end 5a of the upper locking pin groove 5 and the lower locking pin groove 6 is formed. A linear lower guide groove 9 for guiding the lower locking pin 4 in the vertical direction is communicated and connected to a position above the outer end portion 6a, and a groove 5 for the upper locking pin 5 is further connected.
The radius of curvature R ₁ of the outer peripheral edge 42 of the is greater than the radius of curvature R ₂ of the inner peripheral edge 43, and the centers O ₁ and O _{2 of the respective} radiuses of curvature R ₁ and R ₂ are made different so that The upper end portion 5a of the stop pin groove 5 is set wider than the lower end portion 5b, and a cutout portion 19 is provided at the lower end edge of the lower engaging pin groove 6 to form the lower engaging pin groove. 6
The outer end portion 6a of the above is set wider than the inner end portion 6b, and the elastic member 8 for elastically attaching the lower locking pin 4 upward by locking the lower locking pin 4 is provided. A leg for a home kotatsu, which is fixed to the root of the leg 7.