JPH0714727Y2 - 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]

In the case of a leg for a home kotatsu in which a leg is swingably attached to a leg mounting portion at a corner of the upper frame via a pivot, the work of assembling the pivot is troublesome and the pivot The spindle is exposed to the outside and it is not excellent in terms of design.

Therefore, in the present invention, the leg can be swingably and easily attached to the leg attaching portion easily and quickly, and further,
It is an object of the present invention to provide a leg for a home rattling, the pivot of which is not exposed to the outside.

[Means for Solving the Problems]

In order to achieve the above-mentioned object, a leg for a home kotatsu according to the present invention is a leg for a home kotatsu in which a leg is swingably attached to a leg mounting portion at a corner portion of an upper frame via a pivot shaft. A leg; a first member having a blind hole, and a second member having an insertion portion slidably inserted into the hole of the first member,
An elastic member that is fitted in the hole of the first member and presses the first and second members in directions away from each other along the axial direction, to form the pivot shaft that is expandable and contractable; , The first
The first and second projecting pieces are provided on the opposing surfaces of the second member, and the first and second protruding pieces are provided on the respective opposite surfaces of the first and second members.
A projecting shaft portion is provided, and further, a locking portion for respectively locking the first and second projecting pieces in a short state of the pivot shaft is provided on the leg body, and at the same time, the projecting shaft portion of the first and second projecting piece is provided. When the lock is released, the pivot shaft shifts from the short state to the long state, and
A fitting portion for immovably fitting the second protruding shaft to the leg mounting portion is provided on the leg mounting portion.

[Action]

Shorten the pivot shaft so that the first and second protruding pieces of the pivot shaft are locked to the locking portions provided on the legs, and then the locking of the protruding pieces to the locking portions is released. Then, the pivot shaft shifts from the short size state to the long size state, and the first and second projecting shafts are immovably fitted to the leg mounting portions, respectively. The assembling work is completed. That is, after the pivot shaft is mounted on the leg body in a short state, it is inserted into the leg mounting portion,
The pivot is not exposed to the outside.

〔Example〕

 Hereinafter, the present invention will be described in detail with reference to the drawings illustrating an embodiment.

FIG. 3 shows a home kotatsu in which the leg for home kotatsu according to the present invention is used. This home kotatsu is composed of a plastic upper frame 1 and a leg mounting portion 26 at a corner of the upper frame 1. It is provided with four vertically extending plastic legs 2 (see FIG. 1, etc.), and the legs 2 can be folded and unfolded.

Then, the upper frame 1 is composed of the peripheral frame 3 and the middle frame 4,
The peripheral frame 3 includes an outer frame 30 and leg mounting portions 26.
As shown in FIG. 12, includes an upper wall 30a and inner and outer walls 30b and 30c. In addition, the end 6 of the middle shell 4 is inserted through the insertion opening 5 provided in the inner wall 30b of the outer frame 30.
Further, a receiving portion 7 for holding the end portion 6 is provided so as to project inwardly in the vicinity of the insertion opening 5 of the inner wall 30b. That is, this receiving portion 7
Consists of a bottom wall 7a and standing walls 7b, 7b that are erected from the bottom wall 7a, and the end portion 6 is sandwiched between the standing walls 7b, 7b,
The end 6 is attached to the bottom wall 7a by a fastener 8 such as a screw screwed to the bottom wall 7a.

Further, as shown in FIGS. 1 and 2, the mounting recesses 9 are formed of plastic at the corners of the top frame 1, and the mounting projections 10 are formed of plastic at the base ends of the legs 2 to mount the mounting recesses 9 On the other hand, the mounting convex portion 10 is foldably and unfoldably mounted by mutual sliding contact of plastics. Here, the folded state means a state in which the legs 2 are parallel to the top frame 1, and the unfolded state means a state in which the legs 2 are perpendicular to the top frame 1.

That is, as shown in FIGS. 5 and 6, the leg body 2 has the upper wall 11
A cylindrical main body portion 12 having an inner wall 14 and a side wall formed on the upper wall 11 of the main body portion 12.
15, 15 and a substantially quarter-arc wall 16, and a notch 18 is formed in the upper half of the inner wall 14.

Then, the protrusion 20 is erected on the upper surface of the protrusion 13 (that is, the base end surface 19 of the leg 2), and the concave groove 21 is formed in the center of the upper end surface of the protrusion 20. Further, notches 22 and 22 are formed at the left and right upper edge portions. Further, substantially rectangular through holes 23, 23 are provided in the side walls 15, 15 and projecting ridges 24, 24 are provided along the peripheral edges of the through holes 23, 23. Further, the upper wall 11 of the main body portion 12 is provided with a pair of small protrusions 25, 25. The small projecting ridge portion 25 includes a first portion 25a having a large height dimension and a large width dimension, and a second portion 25b having a small height dimension and a small width dimension ( (See FIG. 7).

Then, the corner portion of the top frame 1 is a leg mounting portion 26, and the mounting portion 26 has a first fitting piece 27 that fits into the groove 21 of the protrusion 20 when the leg body 2 is in a developed state. And a second fitting piece 28 that fits into the groove 21 of the protrusion 20 when the leg 2 is folded.

That is, the leg mounting portion 26 is a frame body including an upper wall 31, a side wall 32 to which the outer frame 30 is connected, inner and outer walls 33 and 34, and partition walls 35 and 35 arranged in parallel to the side wall 32. Equipped with a top wall 3
A first fitting piece 27 is vertically provided on the inner wall 33 side of 1, and hanging walls 36, 36 are provided vertically on the left and right sides thereof, and a second fitting piece 28 is provided at the center of the lower end of the outer wall 34. It is projected to the 33 side. Further, in this case, as shown in FIG. 12, a rectangular recess 37 is formed on the inner surface of the lower end center of the outer wall 34, and the second fitting piece 28 is provided upright in the center of the recess 37. . And this second fitting piece
As shown in FIG. 2, 28 is provided with a continuous projecting piece 38 extending from the upper wall 31 to the outer wall 34.

The leg mounting portion 26 is also provided with a pair of guide protrusions 40, 40 having substantially quarter arc-shaped inner edge portions 39 extending from the hanging walls 36, 36 to the left and right ends of the recess 37. That is, as shown in FIGS. 15 and 17 (I), the notch 22 of the protrusion 20 of the leg 2 is fitted to the inner edge portions 39, 39 of the guide protrusions 40, 40,
The swing of the leg 2 is guided. Further, as shown in FIGS. 1 and 2, when the leg body 2 is in the deployed state, the protrusion 20 is
The recessed groove 21 fits into the first fitting piece 27, and is sandwiched between the left and right hanging walls 36, 36. As shown in FIG. 17 (II), the leg 2 is folded. , The protrusion 20 has its groove
21 is fitted in the second fitting piece 28, and the projection 41 formed by the notches 22, 22 is fitted in the recess 37. Also, the mounting part
The inner wall 33 of 26 is formed with a rectangular notch 49 as shown in FIGS. 2 and 6, and when the inner wall 33 is fitted in the recess 50 of the leg 2 in the deployed state, Notch 49 and ridge 13
The convex portion 51 of is fitted. As shown in FIG. 12, the guide projection pieces 40, 40 are connected at the first fitting piece 27 side by a connecting piece 29a, and the hanging walls 36, 36 at the inner wall 33 side are connected by a connecting piece 29b. ing.

Then, the partition walls 35, 35 of the leg mounting portion 26 have a fourth
As shown in FIG. 12 and FIG. 12, the concave grooves 42, 42 opening in the upper wall 31
Is provided. Then, the concave grooves 42, 42 have bottom walls 45, 45.
Notches 46, 46 are formed in the upper opening 47, 47, and anti-slip members 48, 48 are attached to the upper openings 47, 47 as shown in FIG.
The non-slip members 48, 48 are non-slip members such as a futon and a top plate.

A pivot shaft 44 for pivotally attaching the leg 2 to the leg attaching portion 26 is held by the fitting portions 43, 43 which are the lower ends of the concave grooves 42, 42. Here, the pivot 44 is shown in FIGS.
As shown in FIG. 11, a first member 53 having a blind hole portion 52
A second member 55 having an insertion portion 54 slidably inserted into the hole 52 of the first member 53, and a hole of the first member 53
The elastic member 56 is fitted in 52, and expands and contracts along the axial direction.

That is, the first member 53 includes a main body 57 having a substantially rectangular parallelepiped shape and the main body 57.
The first projecting piece 58 projecting from the facing surface 70 of the 57, the projecting shaft portion 59 projecting from the non-facing surface 72 of the body 57, and the axial center of the hole 52 provided in the body 57. Axis 60 arranged along
And a protruding ridge portion 61 protruding from the upper surface of the main body 57, and an axial groove 62 is formed in the lower surface of the main body 57. Further, a notch 63 is provided in the lower portion of the tip of the protruding piece 58, and the tip of the shaft 60 projects from the hole 52.

The second member 55 includes a main body 64 and an opposite surface 73 of the main body 64.
From a facing surface 71 of the main body 64, and a second protruding piece 66 protruding from the facing surface 71 of the main body 64. A groove 67 is formed on the lower surface of the main body 64, a shaft center hole 68 is provided through the insertion portion 54, and a notch 69 is provided at the lower end of the tip of the protruding piece 66.

That is, the projecting pieces 58 and 66 are provided on the facing surfaces 70 and 71 of the first and second members 53 and 55, and the first and second facing surfaces 72 and 73 are provided with the first and second facing surfaces 70 and 71.
Since the protruding shaft portions 59 and 65 are provided, when the insertion portion 54 is inserted into the hole portion 52, the first protruding piece 58 fits into the concave groove 67 of the second member 55, and the second protruding portion 58 is formed. The piece 66 fits into the groove 62 of the first member 53, the first member 53 and the second member 55 are slidable in the axial direction, and the pivot shaft 44 expands and contracts along the axial direction. Then, it is displaced to the long state shown in FIG. 11 (I) and the short state shown in FIG. 11 (II).

Then, as shown in FIGS. 1 and 2, the pivot shaft 44 is inserted into the projecting ridge portion 13, and the projecting shaft portions 59 and 65 respectively form the through holes 23 and 23 of the projecting ridge portion 13. Through the fitting groove 4 at the lower end of the groove 42, 42
Rush into 3,43.

Further, an elastic member 75 is interposed between the pivot shaft 44 and the inner surface 74 of the upper end of the protruding portion 13, and the leg body 2 is constantly pressed against the leg attachment portion 26. That is, the hanging member 76 is provided on the upper end inner surface 74, the upper end portion of the elastic member 75 is fitted to the hanging member 76, and the lower end portion of the elastic member 75 is fitted to the projecting ridge 61 of the pivot shaft 44. To be done. Therefore, the pivot shaft 44 is constantly pressed by the elastic member 75 toward the main body portion 12 side of the leg body 2, and the projecting shaft portions 59 and 65 respectively correspond to the bottom walls of the corresponding recessed grooves 42 and 42.
While being pressed against 45, the upper end inner surface 74 of the ridge 13 is
As a result, the leg body 2 is pressed against the leg attachment portion 26.

As shown in FIG. 7, holding pieces 78, 78 project from the side walls 15, 15 of the protruding ridge 13, and holding pieces 79, 79 project on the inner surface of the projection 51 of the inner wall 14. The holding shaft 78, 78, 79, 79 guides the pivot shaft 44.

Therefore, in the leg for a home diaper constructed as described above, as shown in FIGS. 1 and 2, in the deployed state, the leg member 2 is pressed by the elastic member 75 as shown by the arrow A, and the side wall. 32,3
2, the lower ends of the inner and outer walls 33, 34 and the partition walls 35, 35 are the legs 2 respectively.
In contact with the upper wall 11 of the main body portion 12, the protrusion 20 is formed into a protrusion between the hanging walls 36, 36, and at the gap openings 80, 80 between the side wall 32 and the partition wall 35. Since the protrusions 25, 25 are fitted to each other, the leg body 2 does not rattle and the leg mounting portion 26
Supported by. In order to form the concave grooves 42, 42, as shown in FIG. 4, partition walls 35 are formed with concave groove forming walls 81, 81, and the lower end portions of the concave groove forming walls 81, 81 are formed. And the side wall 32
The second portion 25b of the small projecting ridge 25 is fitted between the lower end and the lower end.

From this state, if the leg 2 is pulled in the direction of the arrow B as shown in FIGS. 13 and 14, the pivot shaft 44 does not move with respect to the leg mounting portion 26 and the leg 2 is elastically moved. The pivot shaft 44 is pulled in the direction of arrow B against the elastic force of the generating member 75, the pivot shaft 44 is in contact with the upper ends of the through holes 23, 23 of the protruding ridge portion 13 of the leg body 2, and the protrusion 20 Is released from the holding state of the hanging walls 36, 36. From this released state, as shown in FIG. 15, if the leg body 2 is swung in the direction of arrow C around the pivot shaft 44, the leg body 2 is swung in the direction of arrow C in sequence. At that time, as shown in FIG. 17, the notch 22 of the protrusion 20 swings while being fitted to the inner edge portions 39, 39 of the guide protrusions 40, 40, and the leg 2 is Guided by the guide protrusions 40, 40, the guide protrusion 40, 40 swings smoothly without rattling.

If the leg 2 is made to be parallel to the top frame 1 by further swinging in the direction of arrow C from the state shown in FIG. Inner edge 3 of 40
Although it disengages from 9,39, in this case, since the leg 2 is pressed toward the base end side along its longitudinal direction, at the same time as disengaging,
The leg 2 is pressed toward the side of the second fitting piece 28 provided on the outer wall 34, and as shown in FIGS. 16 and 17 (II), the second fitting piece is inserted into the groove 21 of the protrusion 20. This state cannot be released unless 28 is fitted and the projection 41 of the projection 20 is fitted in the recess 37 and the leg 2 is pulled in the direction of arrow B. Even in the state shown in FIG. 16, the leg 2 does not rattle.

Then, to return from the state shown in FIG. 16 (folded state) to the expanded state (that is, the state shown in FIGS. 1 and 2),
As indicated by arrow B, the leg 2 is pulled in a direction away from the second fitting piece 28 to release the fitting state of the projection 41 of the protrusion 20 into the recess 37, and swing in the direction of arrow D in this state. When the protrusion 20 is moved to a position corresponding to the first fitting piece 27 while being guided by the guide projecting pieces 40, 40, the leg body 2 moves along the longitudinal direction of the first fitting piece 27. Since it is pressed to the side, as shown in FIGS. 1 and 2, the projecting member 20 is in a deployed state in a protruding state between the hanging walls 36, 36.

Next, a method of assembling the leg for the home patroller configured as described above will be described.

That is, with the pivot shaft 44 in a short state, the leg mounting portion 26
As shown in FIG. 18, without covering 13
The notch portions 63, 69 of the projecting pieces 58, 66 are locked to the locking portions 82, 82 provided on the leg body 2. Here, the locking portions 82, 82 are formed with the end edge portion of the through hole 83 penetratingly provided in the upper wall 11 of the main body portion 12 of the leg body 2. Then, in this state, the elastic member 75 is interposed between the upper end inner surface 74 of the protruding ridge 13 and the pivot shaft 44.

Next, in this state, the leg mounting portion 26 is covered on the protruding ridge portion 13, and from this state, the locking state of the protruding pieces 58 and 66 with the locking portions 82 and 82 is released. That is, the pivot shaft 44 is attached to the upper wall 31 of the leg mounting portion 26.
When pushed to the side, the cutout portions 63, 69 of the projecting pieces 58, 66 are released from the locking portions 82, 82. In this case, the protruding pieces 58, 66 move to the upper wall 31 side through the notches 46, 46 (see FIG. 4), and the protruding shafts 59, 65 cause the fitting shafts 59, 65 to fit into the fitting portions 43 of the concave grooves 42, 42. , 43, it is in a short state against the elastic member 56.
Is in a lengthy state as shown in FIG. 11 (I), the protruding shaft portions 59, 65 are fitted into the fitting portions 43, 43 of the concave grooves 42, 42, and the leg 2 is attached to the leg mounting portion. It is pivotally attached to 26.

Therefore, if the pivot shaft 44 is used, the leg 2 can be assembled easily, quickly and surely.

[Effect of device]

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

The leg body 2 can be pivotally attached to the leg attachment portion 26 through the pivot shaft 44 easily, quickly and surely, and the pivot shaft is also provided.
The 44 and the supporting portion for supporting the pivot shaft 44 are not exposed to the outside, and the design is excellent.

[Brief description of drawings]

FIG. 1 is a sectional front view of an essential part of an embodiment of the present invention, FIG. 2 is a sectional side view of an essential part, FIG. 3 is a simplified plan view of a home katatsu, and FIG. 5 is a side view of the main part of the leg,
6 is a rear view of the main part of the leg, FIG. 7 is a cross-sectional plan view of the leg, FIG. 8 is an enlarged perspective view of the first member of the pivot, and FIG. 9 is the second member of the pivot. FIG. 10 is a sectional view of the pivot shaft, FIG. 11 is a bottom view of the pivot shaft, FIG. 12 is a bottom view of the leg mounting portion, and FIG. Cross-sectional side view of essential parts,
Fig. 14 is a sectional front view of the same section, Fig. 15 is a side sectional view of an essential part of the leg during swinging, and Fig. 16 is a side sectional view of an essential part of the leg in a folded state.
FIG. 17 is a cross-sectional view of the protrusion, and FIG. 18 is a cross-sectional front view of essential parts showing an assembled state. DESCRIPTION OF SYMBOLS 1 ... Top frame, 2 ... Leg body, 26 ... Leg attachment part, 43 ... Fitting part, 44
... Pivot shaft, 52 ... Hole, 53 ... First member, 54 ... Insertion part, 55 ...
Second member, 56 ... Resilient member, 58 ... First protruding piece, 59 ... First protruding shaft portion, 65 ... Second protruding shaft portion, 66 ... Second protruding piece, 70, 71 ...
Opposing surface, 72, 73 ... Anti-opposing surface.

Claims (1)

[Scope of utility model registration request] 1. A leg for a home kotatsu in which a leg body 2 is pivotably attached to a leg mounting portion 26 at a corner portion of an upper frame 1 via a pivot shaft 44, and a blind hole 52. A first member 53 having a first member 53, a second member 55 having an insertion portion 54 slidably inserted in the hole portion 52 of the first member 53, and a second member 55 fitted in the hole portion 52 of the first member 53. The pivot shaft that is expandable and contractable from the elastic member 56 that presses the first and second members 53 and 55 in the direction away from each other along the axial direction.
44 is formed, and the first and second projecting pieces 58 and 66 are provided on the facing surfaces 70 and 71 of the first and second members 53 and 55, respectively,
The first and second members 53, 55 have first and second anti-opposing surfaces 72, 73 respectively.
The second protruding shaft portions 59, 65 are provided, and further, the locking portions 82, 82 to which the first and second protruding pieces 58, 66 are respectively locked in the short state of the pivot shaft 44 are provided with the locking members 82, 82. And the first
By releasing the locking of the second projecting pieces 58, 66, the pivot shaft 44 shifts from the short state to the long state and the first and second projecting shafts 59, 65
Is a fitting part 4 for immovably fitting to the leg mounting part 26.
A leg for a home kotatsu characterized in that 3,43 are provided on the leg attachment portion 26.