JPH0727346U - Cover mechanism of the device body leg - Google Patents

Abstract

(57) [Summary] (Modified) [Purpose] A cover mechanism for the legs of the device body that has a height adjustment mechanism. [Structure] A shaft auxiliary hole 48 having a screw carved therein is provided, and a leg auxiliary portion 45 whose inside is a storage portion penetrates a vertically installed device main body 41 while engaging with a screw of the shaft hole, and a tip portion of the device main body. Of the rotary body 47, which supports the main body of the apparatus by the rotating shaft 6 which is fixed and protrudes from the bottom surface of the rotary body, which is provided with the engaging portion 49 on the inner wall of the edge portion, and which is provided with the circular concave portion 12 opened downward, A ring-shaped pressing body 13 having an engaging convex portion 14 arranged along the inner peripheral wall, a means for fixing the pressing body and the rotary body, and a fitting arrangement inside the pressing body,
A disk-shaped sliding body 17 having a brim portion slidably engaged with the engaging convex portion, a bottom body 18 having a large friction coefficient, and one end engaging and disengaging with a locking portion provided at the lower end of the storage portion. Freely locked, the other end is
A cover part 51, which is locked to the locking part of the rotating body and can surround the periphery of the rotating shaft, is connected to the lower end of the housing part 40 of the device body and the rotating body.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a cover mechanism for a leg portion of a device body, which has a height adjusting mechanism for adjusting the height of the device body.

[0002]

[Prior art]

 Conventionally, in order to adjust the height of the device body 1 such as a video projector, as shown in FIGS. 5 to 8, the bottom surface 2 of the device body 1 such as a video projector is mounted on the bottom surface 2 of the device body 1. A leg portion 3 for adjusting the height is provided. The leg portion 3 is constituted by a leg support portion 5 provided so as to project from a bottom case 4 of the device body 1 and a rotating body 7 rotatably attached to the device body 1 via a rotating shaft 6. Has been done.

A screw hole 8 having a screw formed on the inner wall thereof is provided at the tip of a substantially cylindrical leg support 5 provided so as to project from the bottom case 4 of the apparatus body 1. A rotary shaft 6 having a thread engraved on its periphery penetrates through this screw hole 8 while meshing therewith. A fixed portion 9 such as a nut is fixed to the tip of the rotary shaft 6 by protruding from the leg support 5.

The rotating body 7 is made of a material such as ABS and is formed in a disk shape, and the central portion 7a on the upper surface side, that is, the portion facing the tip end portion of the leg support portion 5 is formed in a flat surface. At the center of the central portion 7a, the fixed portion 9 of the rotary shaft 6 is embedded and the rotary shaft 6 is fixed, and in the periphery thereof, a ring-shaped concave groove 10 that opens upward is formed. It is set up. The recessed groove 10 has screw holes 11 formed at a plurality of positions. On the bottom surface side of the rotating body 7, a screw hole 11 having a diameter of about the position facing the rotating shaft 6 is provided as a center. A circular recess 12 that is larger than the open area and opens downward is provided.

A ring-shaped pressing body 13 arranged along the inner peripheral wall is fitted and arranged in the circular recess 12, and the lower peripheral wall of the pressing body 13, that is, the circular recess 12 of the pressing body 13. On the open end side, there is provided an engaging convex portion 14 protruding in the central direction, and on the upper surface, there is provided a screw hole 15 communicating with the screw hole 11 provided in the rotary body 7. There is.

Further, on the inner side of the pressing body 13, a flange portion 16 that slidably engages with the engaging convex portion 14 of the pressing body 13 is provided on the upper end portion, and the upper surface is recessed inward. The plate-shaped sliding body 17 is fitted and arranged. A bottom body 18 made of rubber or the like having a large friction coefficient is fixed to the bottom surface of the sliding body 17. The sliding body 17 is formed of a synthetic resin member having a small friction coefficient, such as Delrin (trade name).

A cylindrical rib 19 is erected between the central portion 7 a of the rotary body 7 and the inner circumference of the groove 10 to surround the leg support portion 5. A screw 20 is screwed into the pressing body 13 and the rotary body 7 from the screw hole 11 to the screw hole 15, and is fixed by screwing. A vertically long protrusion 21 is provided on the outer peripheral wall of the rotary body 7 to prevent slippage when the rotary body 7 is rotated.

With this configuration, when the height of the device body 1 is adjusted, when the rotary body 7 is rotated clockwise, the rotary shaft 6 fixed to the rotary body 7 rotates. From this, the screw hole 8 provided at the tip of the leg support portion 5 and the screw of the rotary shaft 6 are engaged with each other, and the device body 1 is lifted.

At this time, the portion of the rotary shaft 6 projecting from the leg support 5 is surrounded by the ribs 19, and the rotary shaft 6 is not directly visible from the outside. When the rotating body 7 is rotated counterclockwise, the device body 1 is lowered.

As another conventional example, as shown in FIG. 9, the leg portion 33 of the device body 31 is rotatable from the bottom case 34 of the device body 31 directly to the device body 31 via the rotary shaft 6. And a rotary body 37 attached to the.

This is because the bottom case 34 of the apparatus main body 31 has a hollow central portion, and a screw hole 38 having a screw carved in the inner wall penetrates through the bottom portion of the hollow portion. In addition, the cylindrical leg auxiliary has a peripheral wall portion having an open end on the outer side of the bottom surface 32, a hollow inner portion, and an upper surface closed to form the storage portion 30. The portion 35 is provided upright toward the inside of the apparatus main body 31.

On the other hand, the rotary body 37 is formed in a disk shape, and the central portion 37a on the upper surface side thereof, that is, the portion located opposite to the screw hole 38 of the leg assisting portion 35 is formed in a flat surface. In the central portion of the central portion 37a, the fixed portion 9 of the rotary shaft 6 is embedded and the rotary shaft 6 is fixed, and in the peripheral portion thereof, like the one shown in FIG. A ring-shaped concave groove 10 that opens upward is provided. Similar to FIG. 6, screw holes 11 are formed in the concave groove 10 at a plurality of positions, and the diameter of the rotary body 37 is approximately centered on the position facing the rotary shaft 6 on the bottom side. A circular recess 12 is provided which is larger than the threaded hole 11 and is opened downward.

A cylindrical rib 39 that can be inserted into the storage portion 30 is integrally erected between the central portion 37 a of the rotating body 37 and the inner circumference of the groove 10, and the apparatus body 31 is lifted. When it is twisted, the circumference of the rotary shaft 6 is surrounded.

In the circular recess 12, as described above, the pressing body 13, the engaging projection 14, the sliding body 17, the bottom body 18, etc. are arranged. The pressing body 13 and the rotary body 37 are fixed in the same manner as above.

With such a configuration, the sliding body 17 supports the device main body 31 in a state of being positioned on the floor surface via the bottom body 18, and at the same time, the sliding body 17 has a collar portion 16 of the brim portion 16. The upper surface and the inner surface of the circular recess 12 of the rotary body 7, and the lower surface of the flange 16 and the upper surface of the engaging projection 14 of the pressing body 13 constitute sliding surfaces. At this time, the cylindrical rib 39 is inserted into the storage portion 30.

Therefore, when the height of the device body 31 is adjusted, when the rotating body 37 is rotated in the clockwise direction, the rotating shaft 6 fixed to the rotating body 37 rotates. The screw hole 38 provided in the shaft engages with the screw of the rotary shaft 6, the device body 31 is lifted, and the cylindrical rib 39 is pulled out from the housing portion 30. Therefore, the circumference of the rotary shaft 6 is surrounded by the cylindrical rib 39, and the rotary shaft 6 cannot be seen directly from the outside. When the rotating body 37 is rotated counterclockwise, the device body 31 is lowered.

[0017]

[Problems to be solved by the device]

 In the case of the former type, when the apparatus main body 1 is lifted, the portion of the rotary shaft 6 projecting from the leg support 5 is surrounded by the rib 19 so that the rotary shaft 6 can be seen directly from the outside. There is no. However, when considering the height difference of the device body 1, the lower position is limited by the height of the rib 19 and the leg support 5. On the other hand, the high position was limited by the length of the rib 19 and the height difference could not be made large.

When the bottom surface 2 of the apparatus main body 1 is in direct contact with the floor surface or a desk, the leg supporting portion 5 protruding from the bottom case 4 is used. There is nothing to do. When it is desired to make a large difference in height, the leg support portion 5 must be formed correspondingly, which makes the molding process by the die difficult.

On the other hand, in the case of the latter type, a cylindrical leg auxiliary portion 35 is erected inward from the bottom surface 32 of the bottom case 34 of the main body device 31 toward the inside of the main body 31 of the device. When it is desired to make the height difference of the device main body 31 large, the cylindrical rib 39 which is longer than that of the former type must be formed. Therefore, the storage portion 30 in which the cylindrical rib 39 is stored also becomes long, and there is a problem that the molding process for hollowing the storage portion 30 is difficult. Therefore, the leg portion 33 having a sufficient height difference could not be formed.

As described above, in either case, the height difference between the main body devices 1 and 31 is limited. In particular, the latter type has a bottom case of the device main body 1 like the former type. Since there is no leg support portion 5 protruding from the seat 2, there is a problem in that the height difference of the main body device 31 cannot be secured accordingly.

[0021]

[Means for solving problems]

 According to this invention, the central portion is hollow, and is provided through a shaft hole having a screw carved in the bottom portion, the peripheral wall portion has an open end on the outside of the bottom surface, the inside is formed hollow and the upper surface is closed, and the inside portion is closed. The leg auxiliary part, which serves as a storage part, is engraved with screws on the periphery of the device, which is erected from the bottom to the inside, and penetrates while engaging with the screw of the shaft hole of the device, and the tip part is the bottom of the device. The rotary shaft protruding from the surface and the fixing part fixed to this protruding part, and the central part on the upper surface side facing the bottom part of the leg auxiliary part are formed in a flat surface so that the fixing part of the rotary shaft is fixed and the device main body is fixed. In addition to supporting, the peripheral part is provided with a ring-shaped concave groove that opens upward, a locking part is provided on the inner wall of the edge of this concave groove, and the bottom surface is centered on the part facing the rotation axis and downward. The rotating body is provided with an open circular recess, and is arranged along the inner peripheral wall of this circular recess. A ring-shaped pressing body having an engaging convex portion projecting toward the center on the opening end side of the concave portion, a means for fixing the pressing body and the rotary body, and a fitting arrangement inside the pressing body. , Disc-shaped sliding body with a flange that slidably engages with the engaging protrusion, and a bottom body with a large friction coefficient fixed to the bottom surface of this sliding body, and can be stored in the storage section. At the same time, one end is releasably locked to the locking part provided at the lower end of the storage part, and the other end is locked to the locking part of the rotating body so as to be able to surround the rotation shaft. Is connected to the lower end of the storage part of the device body and the rotating body.

Further, according to the present invention, a bearing portion which is hollow inside and which protrudes upward is formed in the central portion, the bearing portion is provided with a shaft hole through which a screw is engraved, and the upper end portion is provided. , A ring-shaped convex portion is formed along the inner wall, the upper surface is closed, and the leg auxiliary portion whose inside is the storage portion is installed. It penetrates while engaging with the screw of the shaft hole of the main body of the equipment, the tip of which protrudes from the bottom of the main body of the equipment, and the rotating shaft to which the fixed part is fixed at this protruding part and the central part on the upper surface side that faces the bottom of the leg auxiliary part. Is a flat surface to which the fixed part of the rotating shaft is fixed to support the main body of the device, and the peripheral part is provided with a ring-shaped groove that opens upward, and the locking part is attached to the inner wall of the edge of this groove. And a circular recess opened downward on the bottom side centering on the part facing the rotation axis. A rotary body, a ring-shaped presser body that is arranged along the inner peripheral wall of the circular recess, and has an engaging projection protruding toward the center on the opening end side of the circular recess, and the presser and the rotating body. A means for fixing the main body, a disc-shaped sliding body fitted and arranged inside the pressing body, and having a brim portion slidably engaged with the engaging convex portion, and fixed to the bottom surface of the sliding body. It has a bottom with a large friction coefficient and can be stored in the storage part. It also has flanges at both upper and lower ends, the upper end flange is locked to the convex part of the main body, and the other end flange rotates. The bellows-shaped cover part, which is locked to the locking part of the main body, is connected to the accommodating part of the device body and the rotating body, and when the device body is lifted, the circumference of the rotating shaft is covered by the cover part. It was designed to be surrounded.

[0023]

[Action]

 In the first invention, normally, the cover portion 51 is housed in the housing portion 40 in such a state that it is sequentially inserted from the upper cover 51a to the lower cover 51c. When adjusting the height of the device main body 41, when the rotary main body 47 is rotated in the clockwise direction, the rotary shaft 6 fixed to the rotary main body 47 rotates and is provided at the bottom of the leg assisting portion 45. The shaft hole 48 and the screw of the rotary shaft 6 mesh with each other, and the main body 41 of the apparatus is lifted.

At this time, as the rotary shaft 6 rotates, the hooks 52 and 53 of the covers 51a to 51c housed in the housing part 40 are locked to each other, and the respective covers 51a and 51b. .. are drawn out one after another from the storage section 40 in a state of being connected to each other, and the circumference of the rotary shaft 6 is surrounded by the cover section 51. When the rotary body 47 is rotated counterclockwise, the device body 41 is lowered, and the cover portion 51 is compressed while being inserted from the upper cover 51a to the lower cover 51b sequentially. Be stored

In the second invention, as the rotary shaft 6 rotates, the cover portion 71, which is stored in the storage portion 70 in a compressed state, has the flange portion 71 a at the upper end thereof locked by the convex portion 69, and the lower end portion. The flange portion 71 b is locked by the locking portion 72 and pulled out from the storage portion 70, and the circumference of the rotary shaft 6 is surrounded by the cover portion 71.

[0026]

First Embodiment of the Invention A first embodiment of the present invention will be described in detail with reference to FIGS. FIG. 1 is a sectional view of the essential parts showing a first embodiment of the present invention, and FIG. 2 is a plan view of the essential parts. The same parts as those of the conventional example are given the same names and the same numbers, and their explanations are omitted.

1 and 2, the bottom portion 42 of the bottom case 44 of the apparatus main body 41 has a hollow central portion, and the inner wall is provided with a screw on the bottom portion of the hollow portion. A shaft hole 48 is formed so as to penetrate therethrough, and the peripheral wall portion has an open end on the outer side of the bottom surface portion 42, the inside is formed hollow, and the upper surface is closed to form the storage portion 40. A cylindrical leg assisting portion 45 is erected inside the apparatus main body 41. At the lower end of the inner wall of the storage portion 40, a ring-shaped locking portion 49 is provided so as to protrude toward the center along the wall surface.

The leg portion 43 is rotatably attached to the apparatus body 41 via a leg auxiliary portion 45 which is erected inward from the bottom portion 42 of the bottom case 44 of the apparatus body 41 and the rotating shaft 6. It is composed of a rotating body 47.

At the bottom of the leg assisting portion 45, that is, at the bottom of the hollow portion, there is provided a shaft hole 48 having a screw engraved on the inner wall thereof. The rotating shaft 6 is engaged and penetrates. A fixed portion 9 such as a nut is fixed to the tip of the rotary shaft 6 by protruding from the leg auxiliary portion 45.

The rotary body 47 is made of a material such as ABS in the shape of a disc, and is located at the central portion 47 a on the upper surface side, that is, at the bottom of the leg assisting portion 45, as described in the conventional example. The part is formed in a plane, and the fixing part 9 of the rotary shaft 6 is embedded in the center part of the central part 47a to fix the rotary shaft 6, and the peripheral part thereof has an upward direction. A ring-shaped concave groove 10 (shown in FIG. 6) having an opening is provided. A ring-shaped locking portion 50 protruding in the center direction is formed on the inner wall of the edge portion of the groove 10, and screw holes 11 (shown in FIG. 6) are transparently provided at a plurality of arbitrary positions. ing. A circular concave portion 12 is formed on the bottom surface side of the rotating body 47, centering on a portion facing the rotating shaft 6 and having a diameter substantially larger than a portion where the screw hole 11 is provided, and opening downward. There is.

In the circular recess 12, a pressing body 13, an engaging projection 14, a sliding body 17, a bottom body 18 and the like are provided, as in the above-mentioned conventional example. The pressing body 13 and the rotary body 47 are fixed as in the conventional example.

Reference numeral 51 denotes a cover portion, which is composed of a plurality of covers 51a, 51b ..., Each cover 51a, 51b ... The upper end is formed inward and the lower end is formed with hooks 52 and 53 protruding outward, and is formed in a cylindrical shape having a length that can be stored in the storage unit 40. The cover portion 51 of this embodiment is composed of three covers 51a, 51b and 51c.

When the cover portion 51 is stored, the cover portion 51 is sequentially inserted into the storage portion 40 from the upper cover 51a to the lower cover 51c. The hook portion 53 of the cover 51c located below is locked to the locking portion 50 formed at the inner wall edge portion of the concave groove 10.

Accordingly, when the leg portion 43 is extended, the cover 51c is locked by the locking portion 50, and the respective cover 51a, 51b, 51c are hooked by the hook portions 52, 53, and the cover 51c is sequentially locked. The cover part 51 is formed by being pulled out from the storage part 40 and by connecting the covers 51a, 51b, 51c.

The cover portion 51 has one end releasably locked to a locking portion 49 provided at the lower end of the storage portion 40, and the other end to a locking portion 50 formed on the rotary body 47. While being locked and surrounding the rotary shaft 6, it is extensiblely connected between the bottom surface portion 42 of the apparatus main body 41 and the rotary main body 47.

Next, the action and operation will be described. In a normal state, the leg portion 43 is in contact with the bottom surface of the device body 41, and the rotary shaft 6 is inserted into the shaft hole 48 formed in the bottom portion of the hollow portion of the leg auxiliary portion 45 of the device body 41 so as to be inserted. The cover portion 51 is housed in the storage portion 40 while being sequentially inserted from the upper cover 51a to the lower cover 51c.

When the height of the device body 41 is adjusted, when the rotating body 47 is rotated in the clockwise direction, the rotating shaft 6 fixed to the rotating body 47 rotates, so that the bottom portion of the leg assisting portion 45 is rotated. The shaft body 48 and the screw of the rotary shaft 6 mesh with each other, and the main body 41 of the apparatus is lifted.

At this time, as the rotating shaft 6 rotates, the hooks 52 and 53 of the covers 51a to 51c housed in the housing 40 are locked to each other, so that the respective covers 51a to 51c. .. are successively pulled out from the storage portion 40 in a state of being connected to each other, and the periphery of the rotary shaft 6 is surrounded by the cover portion 51.

When the rotating body 47 is rotated counterclockwise, the device body 41 is lowered. At this time, as the rotary shaft 6 rotates in the counterclockwise direction, the cover portion 51 is sequentially inserted from the upper cover 51a to the lower cover 51b while being compressed and stored in the storage portion 40.

It should be noted that if the storage section 40 is formed wide and the number of covers 51a, 51b ... Is increased, the height difference of the apparatus main body 41 can be sufficiently secured. Further, since the length of the storage section 40 may be the length of the cover, the step of removing from the mold during molding is easy.

[0041]

Second Embodiment of the Invention A second embodiment of the present invention will be described in detail with reference to FIGS. FIG. 3 is a sectional view showing a second embodiment of the present invention, and FIG. 4 is a plan view of an essential part. The same parts as those in the conventional example and the first embodiment are designated by the same names and the same numbers, and their explanations are omitted.

In FIGS. 3 to 4, a leg assisting portion 65 is erected on the bottom surface portion 62 of the bottom surface case 64 of the apparatus main body 61 so as to face the inside. The leg assisting portion 65 has a hollow interior, and a bearing portion 60 is formed in the central portion so as to project upward, and a shaft hole 68 in which a screw is engraved is formed in the center portion of the bearing portion 60. Are provided so as to penetrate therethrough. Further, a ring-shaped convex portion 69 is formed along the inner wall at the upper end portion, and the upper surface is closed to form a storage portion 70 inside.

The leg portion 63 is a rotary book which is rotatably attached to the device body 61 via a leg auxiliary portion 65 which is erected inward from a bottom case 64 of the device body 61 and a rotary shaft 6. And the body 67.

In the storage portion 70 of the leg assisting portion 65, the screw engraved on the inner wall of the shaft hole 68 is penetrated while the screw of the rotary shaft 6 is engaged, and the tip end of the rotary shaft 6 is A fixing portion 9 such as a nut is fixed so as to protrude from the leg assisting portion 65.

The rotary body 67 has the same structure as that described in the first embodiment. Reference numeral 71 denotes a cover portion, which is an elastic member such as rubber, silicon, or thin compatible resin, and is formed in a bellows shape. Collar portions 71a and 71b are formed at the upper and lower ends. The flanges 71a and 71b are respectively locked to the convex portion 69 formed in the storage portion and the locking portion 72 formed at the inner wall edge portion of the concave groove 10 (FIG. 6) of the rotary body 67. There is.

Next, the action and operation will be described. In a normal state, the leg portion 63 is in contact with the bottom surface portion 62 of the device body 61, and the rotary shaft 6 is inserted into the shaft hole 68 formed in the bottom portion of the hollow portion of the leg auxiliary portion 65 of the device body 61. It is located in a closed state. The cover portion 71 has upper and lower flange portions 71a and 71b locked to the convex portion 69 and the locking portion 72, respectively, and is stored in the storage portion 70 in a compressed state.

When adjusting the height of the device body 61, rotating the rotating body 67 clockwise rotates the rotating shaft 6 fixed to the rotating body 67. And the screw of the rotary shaft 6 are engaged with each other to lift the main body 61 of the apparatus.

At this time, as the rotary shaft 6 rotates, the cover portion 71, which is stored in the storage portion 70 in a compressed state, has the flange portion 71 a at the upper end thereof locked by the convex portion 69, and the flange portion at the lower end. 71 b is pulled out from the storage portion 70 by being locked by the locking portion 72, and the circumference of the rotating shaft 6 is surrounded by the cover portion 71.

When the rotating body 67 is rotated counterclockwise, the device body 61 is lowered. At this time, as the rotary shaft 6 rotates counterclockwise, the cover portion 71 is compressed and stored in the storage portion 70.

[0050]

[Effect of device]

 The first invention is such that the central portion is hollow, the bottom portion is provided with a threaded shaft hole, the peripheral wall portion has an open end on the outside of the bottom surface, the inside is hollow and the upper surface is closed. The main body of the equipment, which stands inside from the bottom, and a screw are engraved on the periphery, which penetrates the inside of the leg auxiliary part, which is the storage part, while engaging with the screw of the shaft hole of the main body and the tip part of the main body. The rotary shaft, which protrudes from the bottom surface of the rotary shaft, and the fixing part is fixed to this protruding part, and the central part on the upper surface side that faces the bottom part of the leg auxiliary part are formed in a flat surface so that the fixed part of the rotary shaft is fixed and the device main body is fixed. In addition to supporting, the peripheral part is provided with a ring-shaped concave groove that opens upward, a locking part is provided on the inner wall of the edge of this concave groove, and the bottom side is centered on the part facing the rotation axis and the downward direction. The rotating body is provided with a circular recess that is open in, and is placed along the inner peripheral wall of this circular recess. A ring-shaped pressing body having an engaging convex portion projecting toward the center on the opening end side of the shaped concave portion, a means for fixing the pressing body and the rotating body, and a fitting arrangement inside the pressing body. , A disk-shaped sliding body with a flange that slidably engages with the engaging projection, a bottom body with a large friction coefficient fixed to the bottom surface of this sliding body, and a storage unit that can be stored At the same time, one end of the cover is releasably locked to the locking part provided at the lower end of the storage part, and the other end is locked to the locking part of the rotating body so that it can surround the rotation shaft. Since the − part is configured to be connected to the lower end of the storage part of the device main body and the rotating body, the height difference of the device main body can be taken without limitation, and when the legs are extended, the circumference of the rotating shaft is reduced. Since it is surrounded by a flexible cover, it looks better.

In addition, since the storage portion for storing the cover portion may be low, the molding process using a mold is easy. In addition, the shape of the legs is simpler than the conventional one, and the die is also cheaper.

A second invention is that the inside is hollow and a bearing portion projecting upward is formed in the central portion, the bearing portion is provided with a threaded shaft hole, and the upper end portion is provided with A ring-shaped convex part is formed along the inner wall, the upper part is closed and the inside is a storage part, and the leg auxiliary part is erected from the bottom to the inside. It penetrates while meshing with the screw of the shaft hole of the main body, the tip part protrudes from the bottom surface of the device main body, and the rotating shaft with the fixed part fixed to this protruding part and the central part on the upper surface side facing the bottom part of the leg auxiliary part The flat part is formed so that the fixed part of the rotary shaft is fixed to support the main body of the device, and the peripheral part is provided with a ring-shaped groove that opens upward, and the locking part is provided on the inner wall of the edge of this groove. It is provided with a circular recess on the bottom side that is open downward, centered on the location facing the axis of rotation. A main body and a ring-shaped presser body which is arranged along the inner peripheral wall of the circular recess and has an engaging projection protruding in the center direction on the opening end side of the circular recess, and the presser body and the rotary body. And a disc-shaped slide body fitted and arranged inside the pressing body and having a flange portion slidably engaged with the engaging convex portion, and fixed to the bottom surface of the slide body. It can be stored in the bottom body with a large friction coefficient and the storage part, and the flange parts are formed at the upper and lower ends, the upper end flange part is engaged with the convex part of the device body, and the other end flange part is the rotating body. Since the bellows-shaped cover part, which is locked to the locking part, is connected to the storage part of the device body and the rotating body, the same effect as above is obtained.

[Brief description of drawings]

FIG. 1 is a cross-sectional view of essential parts showing a first embodiment of the present invention.

FIG. 2 is a plan view of an essential part showing a first embodiment of the present invention.

FIG. 3 is a cross-sectional view of essential parts showing a second embodiment of the present invention.

FIG. 4 is a plan view of an essential part showing a second embodiment of the present invention.

FIG. 5 is a cross-sectional view of a main part showing a conventional example.

FIG. 6 shows a conventional example and is a plan view of a rotating body.

FIG. 7 shows a conventional example and is a bottom view of a rotating body.

FIG. 8 is a side view showing a conventional example.

FIG. 9 is a sectional view of an essential part showing another conventional example.

[Explanation of symbols]

 6 rotary shaft 12 circular recessed part 13 pressing body 14 engagement convex part 16 collar part 17 sliding body 18 bottom body 40,70 storage part 41,61 device body 42,62 bottom part 43,63 leg part 45,65 leg auxiliary part 47 , 67 Rotating body 48, 68 Shaft hole 49 Locking part 51, 71 Cover part 69 Convex part

Claims (3)

[Scope of utility model registration request] 1. A central portion is hollow, is provided through a shaft hole having a screw carved in the bottom portion, a peripheral wall portion has an open end on the outer side of the bottom surface, and the inner portion is hollow and the upper surface is closed. A leg auxiliary part, which serves as a storage part, has a device main body that is erected from the bottom to the inside, and a screw is engraved on the periphery, penetrates while engaging with the screw of the shaft hole of the device main body, and the tip part is the device. The rotary shaft protruding from the bottom surface of the main body and having the fixing portion fixed to the protruding portion, and the central portion on the upper surface side of the leg auxiliary portion facing the bottom portion,
The fixed part of the rotary shaft is fixed to support the device main body, and the peripheral part is provided with a ring-shaped concave groove that opens upward and is locked to the inner wall of the edge of the concave groove. A rotary body provided with a circular recess, which is provided downwardly and centered on a position facing the rotating shaft on the bottom side, and an opening end of the circular recess which is arranged along the inner peripheral wall of the circular recess. On the side, a ring-shaped pressing body having an engaging projection protruding in the center direction, a means for fixing the pressing body and the rotating body, and a fitting arrangement inside the pressing body, A disk-shaped sliding body having a flange portion that slidably engages with the convex portion, a bottom body having a large friction coefficient fixed to the bottom surface of the sliding body, and capable of being stored in the storage portion, One end is releasably locked to a locking part provided at the lower end of the storage part, and the other end is An apparatus main body characterized in that a cover portion which is locked to the locking portion of the rotary body and can surround the periphery of the rotary shaft is connected to the lower end of the accommodating portion of the apparatus main body and the rotary body. Leg cover mechanism. 2. The cover part is formed so as to widen from the upper end to the lower end, the upper end is provided with a hook part projecting inward, and the lower end is provided with a hook part projecting outward, and is formed to have a length that can be stored in the storage part. 2. A plurality of cylindrical covers are provided, which are inserted from the upper side to the lower side when the legs are compressed and are connected to each other when the legs are extended. Cover mechanism of the body of the device. 3. The inside is hollow, and a bearing portion projecting upward is formed in the central portion, and the bearing portion is provided with a shaft hole penetrating therethrough, and the upper end portion is provided along the inner wall. A device main body having a ring-shaped convex portion, the upper surface of which is closed and a leg auxiliary portion whose inside is a storage portion is erected from the bottom surface to the inside, and a screw is engraved on the periphery of the main body of the device. It penetrates while engaging with the screw of the hole, the tip part protrudes from the bottom surface of the main body of the device, and the rotary shaft to which the fixing part is fixed at this protruding part and the central part on the upper surface side facing the bottom part of the leg auxiliary part are ，
The fixed part of the rotary shaft is fixed to support the device main body, and the peripheral part is provided with a ring-shaped concave groove that opens upward and is locked to the inner wall of the edge of the concave groove. A rotary body provided with a circular recess, which is provided downwardly and centered on a position facing the rotating shaft on the bottom side, and an opening end of the circular recess which is arranged along the inner peripheral wall of the circular recess. On the side, a ring-shaped pressing body having an engaging projection protruding in the center direction, a means for fixing the pressing body and the rotating body, and a fitting arrangement inside the pressing body, A disk-shaped sliding body having a flange portion that slidably engages with the convex portion, a bottom body having a large friction coefficient fixed to the bottom surface of the sliding body, and capable of being stored in the storage portion, Collars are formed on both the upper and lower ends, and the flanges on the upper end are engaged with the convex parts of the device body. The main body of the apparatus is characterized in that the flange portion at the other end connects a bellows-shaped cover portion locked to the locking portion of the rotary main body to the storage portion of the main body of the apparatus and the rotary main body. Leg cover mechanism.