JP3179341B2 - Heavy support legs - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to various machines such as machine tools and conveyors, various furniture such as lockers for storing books and documents, various display devices, and heavy objects such as various electric and electronic devices such as televisions and audio devices. The present invention relates to a heavy object supporting leg for supporting

[0002]

2. Description of the Related Art Conventionally, there are various types of supporting legs for a heavy object. A fixing supporting leg for temporarily fixing the heavy object to the floor, and a moving supporting member for allowing the heavy object to move on the floor. BACKGROUND ART Heavy load supporting legs combined with legs are known. FIG.
FIG. 7 shows an example of such a heavy load supporting leg, and FIG. 7 shows another example.

[0003] A heavy object supporting leg shown in FIG. 6 includes a pedestal 102 fixed to a lower portion of a heavy object 101 with a bolt 102a or the like, a fixing supporting leg 105 and a moving supporting leg 10 supported by the pedestal 102.
7 is provided. The fixing support leg 105 is
Female screw part 10 fixed to the lower part of
3 and a male screw rod 104 that is screwed into the female screw portion 103 and turned to adjust the amount of protrusion downward of the female screw portion.

[0004] A moving support leg 107 is mounted on a pedestal 102 so as to be rotatable about a vertical axis.
And a wheel 10 supported rotatably about the horizontal axis.
6. According to this heavy load supporting leg, when the protrusion amount of the male screw bar 104 of the fixing support leg 105 is adjusted to be small and the lower surface of the lower end foot F of the male screw bar 104 is positioned above the lower end of the wheel 106, Moving support leg 10
The wheel 106 of No. 7 comes in contact with the floor and can move the heavy object 101, and the amount of protrusion of the male screw rod 104 is largely adjusted so that the lower surface of the lower end foot F of the male screw rod 104 is lower than the lower end of the wheel 106. Side, the fixing support leg 1
05 comes into contact with the floor, and the heavy object 101 can be temporarily fixed to the place.

In the heavy object supporting leg shown in FIG. 7, a fixing supporting leg 105 is not fixed to the pedestal 102 but to a wheel supporting member 108a of a moving supporting leg 107, and the wheel 106 and the fixing support are fixed by the supporting member 108a. Base 1 on both legs 105
02.

[0006]

SUMMARY OF THE INVENTION In the above prior art,
The fixing supporting leg 105 is brought into contact with the floor, or the moving supporting leg
7 is fixed on the male screw rod 1 of the fixing support leg 105.
In this case, it is necessary to turn the screw rod with a turning tool such as a wrench using the turning tool engaging member 109 provided on the male screw rod 104. However, there is a problem that the adjustment is troublesome and the adjustment takes time.

Accordingly, the present invention provides a heavy-weight supporting leg which can switch the floor of the fixing supporting leg and the moving supporting leg to a simple and quick operation without using a screwdriver such as a spanner. The task is to provide.

[0008]

According to the present invention, there is provided a heavy object supporting leg according to the present invention, which comprises: a pedestal mounted on a lower part of a heavy object; a cylinder hanging down from the pedestal; A supporting leg, a spring for urging the fixing supporting leg upward, a moving supporting leg having wheels attached to the cylinder, and a cylinder connected to the cylinder and the fixing supporting leg. A fixing lever for moving the fixing support leg downward against the spring by being pressed down and pivoted about the connecting portion of the fixing lever; and a fixing lever provided on the fixing lever, wherein the pressing down of the fixing lever is performed. When the lower end of the fixing support leg is moved to a position lower than the lower end of the support leg for movement by a rotation operation, the lower end engages with the engaged portion on the outer wall of the cylinder, and the engagement is performed by releasing operation. Weight with an engaging member is released
It is an object support leg.

According to this heavy object supporting leg, when the fixing supporting leg is in contact with the floor, the engaging member on the fixing lever is engaged with the engaged portion of the cylinder, and the fixing supporting leg is a spring. In a position depressed with respect to the cylinder (a position protruding from the cylinder). When the engaging member is released from this state, the engagement of the engaging member with the engaged portion is released, and the fixing support leg receives the urging force of the spring and moves upward in the cylinder. Then, the lower end of the fixing support leg moves to a position above the lower end of the moving support leg. Instead of this, the lower end of the moving support leg contacts the floor, and the moving support leg allows the heavy object to move on the floor.

When the fixing lever is depressed and rotated from the state of being supported by the moving support legs,
When the fixing support leg moves downward in the cylinder against the spring and starts to touch the floor, and further depresses the fixing lever, the protruding fixing support leg makes the moving support leg and heavy object relatively move. When the lower end of the fixing support leg moves relatively below the lower end of the moving support leg in this way, the engaging member engages with the engaged portion, and the fixing support leg is temporarily fixed. Is done. Thus, the heavy object is temporarily fixed on the floor by the fixing support legs.

The fixing lever is divided into a lever main body connected to the cylinder and the fixing support leg, and an extension lever rotatably connected to the lever main body. Is provided with a claw that engages with the lever main body when is rotated downward. By configuring the fixing lever in this way, the fixing support leg is
Stored when not in use of the fixing lever in a fixed state on the floor, at the lower position of the pedestal, inwardly as the extension lever pivots operating the extension lever against the lever body upward unobtrusive Or it can be stored.
When the fixing lever is used, if the extension lever is rotated downward with respect to the lever main body, the extension lever is engaged with the lever main body by the claw, so that the push-down rotation operation force applied to the extension lever is applied to the lever main body. It is transmitted to the main body.

[0012] The engaging member may be rotatably supported by the fixing lever, and the engaging portion capable of engaging and disengaging one end of the engaging member to the engaged portion of the cylinder, the other end The engaging portion can be biased toward the cylinder side by a spring by pushing down the portion as a rotating operation portion. According to this heavy load supporting leg, the engaging portion of the engaging member is always subjected to the biasing force by the spring in a direction in which the engaging portion can be engaged with the engaged portion on the cylinder, and the engaging portion is released from the engaged portion. When the fixing support lever is brought into contact with the floor by pressing down and rotating the fixing lever from the state where the moving support leg is in contact with the floor, the engaging portion automatically comes into contact with the engaged portion. Engage.

The fixing lever is divided into a lever body connected to the cylinder and the fixing support leg as described above, and an extension lever rotatably connected to the lever body.
Since the engaging member is rotatably supported by the lever main body, a state in which the engaging member is engaged with the engaged portion on the cylinder, in other words, a heavy object is supported by the fixing support legs. In the supporting state, the storage position of the extension lever can be set to the position above the engagement member and the position below the pedestal . As a result, a compact state is obtained.

[0014]

Embodiments of the present invention will be described below with reference to the drawings. 1 to 3 show a heavy object supporting leg according to an embodiment. In these figures, 1 is a heavy object, 2 is a pedestal made of a steel plate or the like disposed below the heavy object 1, and the pedestal 2 is fixed to a lower portion of the heavy object 1 by a plurality of bolts 3. I have. A cylinder 4 hanging from the pedestal 2 is fixed to the pedestal 2 by welding or the like.

A fixing support leg 5 is fitted into the cylinder 4 so as to be able to move up and down. As shown in FIG. 4, the support leg 5 includes a piston 51 which is fitted into the cylinder 4 so as to be able to move up and down. The piston 51 has a female thread at the lower end, and the piston 51 has a female thread at the lower end. The male screw rod 52 is screwed, and by turning the male screw rod 52, the amount of protrusion of the male screw rod 52 below the female screw portion can be adjusted. A base pedestal 53 is attached to a lower end of the male screw rod 52 by a small screw 54 so as to be rotatable around the longitudinal axis. An elastic body (here, made of rubber) 531 is fitted to this pedestal. , Which can be attached to the floor. A lock nut 522 is screwed onto the male screw rod 52 below the piston 51. Further, a member 521 for engaging a threaded bar driver is fixed to the lower end of the male threaded rod 52.

A coil spring 6 is fitted between an upward step provided on the inner periphery of the cylinder 4 and a downward step provided on the outer periphery of the piston 51 so as to oppose the upper step. The cylinder 4 and the step of the piston 5 are respectively in contact with each other, and urge the piston 51 and thus the entire fixing support leg 5 upward with respect to the cylinder 4.

A moving support leg 7 is attached to the cylinder 4. That is, a cylinder 70 is externally fitted and fixed to the lower outer wall of the cylinder 4, and two brackets 71 are protruded side by side on this cylinder, and these brackets 71,
An axle 72 is rotatably supported by penetrating the bracket 71 in the lateral direction, and wheels 73 are fixed to ends of the axle 72 protruding outside the brackets 71, respectively. The cylindrical body, the bracket, and the wheels constitute the moving support legs 7.

A pair of fixing levers 8 and 8 are connected to the cylinder 4 and the fixing support legs 5. Each fixing lever 8 includes a lever body 81 and an extension lever 82 rotatably connected to an end of the lever body 81 by a shaft 83. As shown in FIGS. 1, 3 and 4, etc., each extension lever 82 is provided with a claw 84 which engages with the lever main body 81 when it is rotated downward. . When the claw 84 is engaged with the lever main body 81, the whole of the fixing lever 8 is in a state of being elongated.

As shown in FIGS. 1 to 3 and the like, two brackets 9 project from the upper outer wall of the cylinder 4 side by side, and the upper end of each bracket 9 is also connected to the pedestal 2. A first connecting shaft 10 is rotatably supported by the brackets 9, 9 penetrating in the lateral direction, and is disposed on both sides of the cylinder 4 at an end of the first connecting shaft 10 protruding outside each bracket 9. The lever bodies 81, 81 of the fixing levers 8, 8 are fixed respectively. 4 and 5, a second connecting shaft 11 is rotatably supported at an upper portion of the piston 51 in parallel with the first connecting shaft 10 through the second connecting shaft 11. Both ends of the connecting shaft 11 are loosely fitted into elongated holes 41, 41 which are vertically opened in the upper part of the cylinder 4, and are penetrated therethrough to be led out of the cylinder 4, and each end is provided with the lever. Body 8
One halfway is connected. A fixing operation portion 12 made of a steel plate or the like is fixedly provided at the free ends of the extension levers 82, 82 connected to the lever main bodies 81, 81 so as to connect them.

With such a configuration, the extension levers 82, 8
2 is opened (extended) and the fixing operation part 12 is stepped on, and the fixing lever 8 is
8, the free end of the second connecting shaft 1 is pushed down and rotated.
1, the piston 51 moves downward against the urging force of the coil spring 6, and the fixing supporting leg 5 moves downward relative to the cylinder 4 and the moving supporting leg 7 attached thereto. It is supposed to. The fixing levers 8 have an engaging member 13. That is,
Between the cylinder 4 and the fixing operation portion 12 on the fixing levers 8, 8, a third connecting shaft 14 is provided between the lever main bodies 81, 81, and the third connecting shaft 14 is provided with the engaging member. 13 is rotatably supported. The engaging member 1
One end of 3 is an engaging portion 131 which can be engaged with and disengaged from the engaged portion 15 formed in the outer wall of the cylinder 4, and a push-down rotating operation portion 132 formed of a steel plate or the like is fixed to the other end. I have. The third connection shaft 14 has a coil spring 16
And one end thereof is engaged with the engaging member 13, and the other end thereof is engaged with the lever body 81, and the engaging portion 131 is attached to the engaged portion 15 side of the cylinder 4 by the coil spring 16. It is being rushed.

With such a configuration, as shown in FIG. 4 and the like, the engagement portion 131 of the engagement member 13 is moved when the lower end of the fixing support leg 5 moves below the lower end of the moving support leg 7. At the engaging portion 15 on the outer wall of the cylinder. Also,
As shown in FIG. 5, when the push-down rotation operation section 132 on the engagement member 13 is released by stepping on or the like, the engagement is released. Then, as shown in FIG. 4, the extension lever 82 of the fixing lever 8 is in a state where the engagement member 13 is engaged with the engaged portion 15 of the cylinder 4.
The storage position can be set by rotating above the engagement member.

According to the heavy object supporting legs described above, FIG.
As shown in FIG. 4, when the fixing support leg 5 is in contact with the floor, the engaging portion 13 of the engaging member 13 on the fixing lever 8
1 is engaged with the engaged portion 15 on the cylinder 4, and the fixing supporting leg 5 is pressed against the cylinder 6 against the spring 6 in the cylinder 4 (the position protruding from the cylinder). I am taking. In this state, FIG.
As shown by a dashed line and a solid line in FIG.
In this case, the extension levers 82, 82 can be rotated upward and inward at a position lower than the pedestal 2 to be stored above the engagement member 13.

In this state, the extension levers 82, 82 are fixed to the claws 84, 8 of the fixing levers 8, 8 as necessary.
4 is rotated downward until it comes into contact with the lever main bodies 81, 81, and then the push-down rotating operation portion 132 of the engaging member 13 is pushed down by stepping or the like.
Is rotated clockwise in FIG. 4, whereby the engaging portion 131 is disengaged from the engaged portion 15, and the fixing support leg 5 receives the urging force of the spring 6 to move upward in the cylinder 4. Then, the lower end of the fixing support leg 5 moves to a position above the lower end of the moving support leg 7. Instead of this, the wheel 72 of the moving support leg 7 comes into contact with the floor, and the moving support leg 7 allows the heavy object 1 to move on the floor. FIG. 5 shows this state.

Further, from the state of being supported by the moving supporting legs 7, the fixing levers 8 on the fixing levers 8, 8 which are open long as shown by the chain lines in FIG. 4 or by the solid lines in FIG. If the operating portion 12 is depressed and rotated by stepping on the like, the fixing support leg 5 moves downward in the cylinder 4 against the spring 6 in the cylinder and starts to touch the floor. 8, the moving supporting leg 7 and the heavy object 1 are relatively lifted by the protruding fixing supporting leg 5, and thus the lower end of the fixing supporting leg 5 is moved to the wheel of the moving supporting leg 7. When the member 73 moves relatively below the lower end, the engaging portion 131 of the engaging member 13 urged by the spring 16 is automatically engaged with the engaged portion 15 on the cylinder 4 and fixed. Support leg 5 is temporarily fixed. Thus, the heavy object 1 is temporarily fixed on the floor by the fixing support legs 5.

When the extension levers 82, 82 of the fixing levers 8, 8 are rotated upward with respect to the lever main bodies 81, 81, the extension levers 82, 82 are chained in FIG.
Then, as shown by the solid line in FIG. 4, it is stored inward at a position below the pedestal 2 so as not to be in the way. As described above, with this heavy load supporting leg, one-touch operation can be performed by pushing down and rotating the fixing levers 8 and 8 and pushing down and rotating the lever-type engagement member 13 without using a screwdriver such as a spanner. The lower end of the fixing support leg 5 is moved by the support leg 7
Can be relatively easily moved up and down with respect to the wheel 73, so that the floor contact between the fixing support leg 5 and the moving support leg 7 can be easily and quickly switched.

Although two fixing levers 8 are provided in the above embodiment, only one fixing lever 8 may be provided. Number of wheels 73 is also one
May be one. Further, although the cylinder 4 is fixed to the pedestal 2, the cylinder 4 may be provided so as to be rotatable around the longitudinal axis with respect to the pedestal 2.

[0027]

As described above, according to the present invention, it is possible to switch the floor contact between the fixed support leg and the movable support leg with a simple operation without using a screwdriver such as a spanner.
It is possible to provide a heavy-weight supporting leg that can be operated quickly. Further, according to the present invention, it is possible to provide a heavy load supporting leg which can switch the floor of the fixing supporting leg and the moving supporting leg to the floor by simply pushing down and rotating the lever or the lever-type member by stepping or the like.

Further, according to the present invention, it is possible to provide a heavy load supporting leg which can be stored so that the lever is not obstructed when the lever is not used.

[Brief description of the drawings]

FIG. 1 is a front view of a heavy object supporting leg according to the present invention when a fixing supporting leg is operated.

FIG. 2 is a right side view of the heavy object supporting leg shown in FIG. 1 when a fixing supporting leg is operated.

FIG. 3 is a left side view of the heavy object supporting leg shown in FIG. 1 when a fixing supporting leg is operated.

4 is a cross-sectional view of the heavy load supporting leg shown in FIG. 1 when a fixing supporting leg is operated.

5 is a cross-sectional view of the heavy object supporting leg shown in FIG. 1 when the moving supporting leg is operated.

FIG. 6 is a diagram showing a conventional example.

FIG. 7 is a diagram showing another conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Heavy load 2 Pedestal 3 Bolt 4 Cylinder 5 Fixing support leg 51 Piston 52 Male screw part 53 Foundation pedestal 54 Machine screw 6 Coil spring 7 Moving support leg 71 Bracket 72 Axle 73 Wheel 8 Fixing lever 81 Lever body 82 Extension lever 83 Horizontal shaft 84 Claw 9 Bracket 10 First connection shaft 11 Second connection shaft 12 Fixing operation part 13 Engagement member 131 Engagement part 132 Rotation operation part 14 Third connection shaft 15 Engaged part 16 Coil spring

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int. Cl. ⁷ , DB name) F16M 11/20-11/22 B60B 33/00-33/06 B62B 1/00-19/04

Claims (1)

(57) [Claims] 1. A pedestal attached to a lower part of a heavy object, a cylinder hanging down from the pedestal, a fixing support leg fitted into the cylinder so as to be able to move up and down, and a spring for urging the fixing support leg upward. A moving support leg having wheels attached to the cylinder; a connecting support leg connected to the cylinder and the fixing support leg; A fixing lever for moving the leg downward against the spring; and a fixing lever provided on the fixing lever, wherein the lower end of the fixing support leg is lower than the lower end of the moving support leg by the push-down operation of the fixing lever. And an engagement member that is engaged with the engaged portion on the cylinder outer wall when moved to the lower side, and the engagement is released by being released. A lever body connected to the cylinder and the fixing support leg, and an extension lever rotatably connected to the lever body. The extension lever is operated to rotate downward. A hook that engages with the lever body when the lever is engaged, the engaging member is rotatably supported by the lever body of the fixing lever, and one end of the engaging member is an engaged portion of the cylinder. The other end portion is a push-down rotating operation portion, and the engaging portion is urged by a spring toward the cylinder side. The extension lever of the fixing lever is in a state in which member is engaged with the engaged portion of the cylinder, before
A heavy object supporting leg capable of rotating to the upper side of the engaging member and inward at a position below the pedestal to the storage position.