JPH0554412U - Moving equipment for heavy goods - Google Patents

Abstract

(57) [Summary] (Modified) [Purpose] Improve the stability of heavy equipment such as chests, cupboards, etc. where heavy objects are installed stably and can be easily moved when necessary. At the very least, it is an object of the present invention to provide a lever that can be operated lightly, has a simple structure, and can be manufactured at low cost. [Structure] Frame frame 2 and caster base 3, one end of which is rotatably connected and the other end of front and rear caster bases that faces the center of rotation of lifting lever 4 and lifting lever. Consisting of front and rear connecting members 5 and 6 that are constantly pressed against the upper surface of
The caster side ends of the front and rear connecting members are guided by front and rear inclined elongated holes 54 and 64 formed in the frame and inclined downward in the front and rear direction.

Description

[Detailed description of the device]

[0001]

[Industrial application]

 The present invention relates to a moving device for heavy goods, in which furniture such as chests and cupboards, or heavy goods such as pianos and decorative installations can be stably installed and easily moved when necessary. It is a thing.

[0002]

[Prior Art]

 Conventionally, the above-mentioned device has been provided with a frame frame whose upper and lower surfaces are opened, an arm device mounted in the frame frame, a lever device which is rotatable in the front-rear direction, and the arm device is moved to the lower surface of the arm. It is equipped with a member for rotation, and the base end is pivotally supported in the vicinity of the inner edge of the frame frame so that it can rotate in the vertical direction. The lever device is configured to push down the arm based on the transmission by the connecting member. .. (For example, Japanese Utility Model Publication No. 1-114830)

That is, since the portion where the arm is pivotally supported is the end portion on the inner surface side of the frame, the dimension between the casters provided on the lower surface of the arm becomes small, which not only causes the stability to be impaired. However, the lever load applied to the arm becomes closer to the floor surface of the caster, that is, the distance between the force point and the action point becomes shorter, so there is a problem that the lever operation becomes heavy.

[0004]

[Problems to be solved by the device]

 The present invention aims to solve the above problems. That is, it is an object of the present invention to provide a heavy-duty moving device that improves the stability of the device by increasing the distance between the casters, can operate the lever lightly, and has a simple structure and can be manufactured at low cost. .

[0005]

[Means for solving the problem]

 Frame Frame, caster base, lifting lever, and one end is rotatably connected to the center of rotation of the lifting lever, and the other end is always on the upper surface of the front and rear caster bases. The front and rear connecting members are in pressure contact with each other, and each end of the front and rear connecting members on the caster base side is guided by a front and rear inclined long hole that is inclined downward in the front and rear direction in the frame and the protruding state of the casters. The end of the front connecting member on the lifting lever side and the connecting portion of the lifting lever are located below the center of rotation of the lifting lever.

[0006]

【Example】

 FIG. 1 is a longitudinal sectional view of a main part of the present invention in a movable state. The moving device 1 is usually attached to the left and right sides of the storage furniture, but the figure shows only one of them.

The moving device 1 is composed of a frame frame 2, front and rear caster bases 3, 3, an elevating lever 4, front and rear connecting members 5, 6, and the like.

The frame frame 2 is a front-rear direction in which both upper and lower sides are opened from left and right frames 21 and 21 having an inverted L-shaped cross section and front and rear frames 22 and 22 having substantially U-shaped cross sections which are connected to front and rear ends of the left and right frames 21 and 21. It has a long frame shape.

The front caster table 3 is provided continuously from the caster mounting surface 31 and the left and right end portions of the caster mounting surface 31, and is connected to the left and right frames 21 by the connecting projections 32, 32 protruding toward the center in the front-rear direction. It is formed to be slightly smaller than the space between 21. The caster 30 is attached to the lower surface of the caster mounting surface 31, and the tip ends of the connecting projections 32, 32 on the center side are rotatably connected to the left and right frames 21, 21 by a connecting shaft 33.

A spring member 35, one end of which contacts the lower surface of the caster mounting surface 31 and the other end of which contacts the lower surface of the reinforcing member 210 mounted between the left and right frames 21 and 21, is attached to the connecting shaft 33. The caster table 3 is always urged to rotate upward.

The elevating lever 4 is slightly smaller than the space between the left and right frames 21, 21, and is formed in a substantially U-shaped cross section from the left and right walls 41, 41 and the upper wall 42, and the left and right walls 41, 41. In the standing posture, one end widens as it goes downward, and the central part of the wide end is rotatably connected to the left and right frames 21, 21. The operation portion 40 is formed on the other end side.

The front connecting member 5 includes a pair of left and right front link members 51, 51 located between the left and right walls 41, 41 of the lifting lever 4 and the left and right frames 21, 21, and the front of the left and right front link members 51, 51. The front guide shaft 52, which connects the ends on the frame 22 side, and the front guide shaft 52 are rotatably mounted on the inner surfaces of the pair of left and right front link members 51, 51, and the peripheral end faces are always mounted on the front caster base 3. It is composed of front pressure contact rollers 53, 53 that come into contact with the upper surface of the caster mounting surface 31, and its rear end is rotatably connected to the wide end of the lifting lever 4.

The left and right end portions of the front guide shaft 52 are fitted into front inclined long holes 54, 54 formed in the front end portions of the left and right frames 21, 21 and inclined forward and downward.

That is, when the front connecting member 5 moves forward with the rotation of the lifting lever 4, the end portion of the front guide shaft 52 is fitted into the front inclined elongated holes 54, 54. Along with this, the front pressure contact rollers 53, 53 move while pushing down the caster mounting surface 31 and rotate the caster base 3 to cause the casters 30 to protrude below the frame frame 2.

The rear connecting member 6 includes a pair of left and right rear link members 61, 61 located between the left and right walls 41, 41 of the elevating lever 4 and the left and right frames 21, 21, and the left and right rear phosphorus members 61, 61 rear frame. The rear guide shaft 62 that connects the end portions on the 22 side and the pair of left and right rear link members 61, 61 are rotatably attached to the rear guide shaft 62 on the inner surface side, and the peripheral end surface is always mounted on the caster of the rear caster base 3. The front link member 51 is composed of rear pressure contact rollers 63, 63 that come into contact with the upper surface of the surface 31, and the front end is the wide end of the lifting lever 4, and the front link member 51 is centered around the center of rotation of the lifting lever 4. , 51 and the connecting portion of the lifting lever 4 are rotatably connected to a position facing the connecting portion.

The left and right end portions of the rear guide shaft 62 are fitted in rearwardly inclined long holes 64, 64 formed in the rear end portions of the left and right frames 21, 21 and inclined rearward and downward.

That is, when the rear connecting member 6 moves rearward as the lifting lever 4 rotates, the end portion of the rear guide shaft 62 is fitted into the rear inclined long holes 64, 64. The rear pressure contact rollers 63, 63 move while pushing the caster mounting surface 31 downward, and rotate the caster base 3 to cause the caster 30 to project below the frame 2.

Reference numerals 7 and 7 denote a state in which the raising / lowering lever 4 is pivoted forward so that the front and rear casters 30, 30 are projected below the frame 2 to prevent the elevator lever 4 from further pivoting. The stopper projections formed on the left and right frames 21 and 21 are shown so that the upper ends of the rear link members 61 and 61 come into contact with each other to stop.

With the upper ends of the rear link members 61, 61 in contact with the stopper protrusions 7, 7, the connecting portion between the front link members 51, 51 and the elevating lever 4 is rotated by the elevating lever 4. It is located below the center, and the connection point between the rear link members 51, 51 and the lifting lever 4 is located above the center of rotation of the lifting lever 4.

That is, the load of the article in which the present moving device 1 is used is applied to the casters 30 and 30, and the front and rear caster bases 3 and 3 rotate upward to move the rear link member 61 forward. Also, since the lifting lever 4 is loaded so as to rotate forward, the lifting lever 4 does not rotate due to the abutment of the rear link members 61, 61 and the stopper projections 7, 7, and the caster 30 does not rotate. , 30 are kept protruding.

On the other hand, when the casters 30 and 30 are to be housed in the frame 2, when the lifting lever 4 in the state of FIG. 1 is rotated rearward, the front link members 51 and 51 move rearward. The rear link members 61, 61 move forward, and their ends (the front pressure rollers 53, 63) move upward along the front and rear inclined elongated holes 54, 64, and at the same time, the front and rear casters 3, The casters 30, 30 are also housed in the frame 2 by pivoting the caster 3 upward.

[0016]

[Effect of the device]

 As described above, according to the present invention, the end of the caster base on the center side in the front-rear direction is rotatably attached to the frame, and the end of the front-rear connecting member is attached to the caster base by the front and rear inclined long holes formed in the frame. Since the structure is press contact, the dimension between the casters can be made large and stability is improved, and the movement of the lifting lever is transmitted to the caster base only by the front and rear connecting materials and the front and rear slanted long holes. Is easy and cheap to manufacture. Further, since the casters are pushed toward the front and rear ends of the frame, the dimension between the rotation center of the lift lever and the casters becomes large, and the vertical movement dimension of the lift lever can be smaller than the vertical movement dimension of the casters. That is, by forming the elevating lever to a larger size, the operation of pushing down the caster is light and easy.

[0017]

[Brief description of drawings]

FIG. 1 is a vertical cross-sectional view of main parts with casters protruding

FIG. 2 is a vertical cross-sectional view of main parts with casters stored.

FIG. 3 is a plan view corresponding to FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Moving device 2 Frame frame 21 Left-right frame 3 Front-rear caster stand 30 Caster 4 Lifting lever 5 Front connecting member 54 Front inclined long hole 6 Rear connecting member 64 Rear inclined long hole

Claims (1)

[Scope of utility model registration request] A frame frame whose upper and lower surfaces are open, and a caster on the lower surface, and two front and rear caster bases whose center-side end in the front-rear direction is rotatably attached to the frame frame. One end is rotatably connected to the lift lever mounted rotatably, facing the center of rotation of the lift lever, and the other end is always in pressure contact with the upper surfaces of the front and rear caster bases. The caster base side ends of the front and rear connecting members are guided by front and rear inclined elongated holes formed in the frame to incline downward in the front and rear direction, and when the casters project, A heavy-weight moving device characterized in that an end of the connecting member on the side of the lifting lever and a connecting portion of the lifting lever are located below a center of rotation of the lifting lever.