KR20120081052A - Regulate possible high and low drive system of frame - Google Patents

Abstract

PURPOSE: A frame driving apparatus capable of adjusting the height, and elements for forming thereof are provided to improve the work efficiency by enabling users to freely adjust the height of a working table when assembling or packaging products by the physical condition. CONSTITUTION: A frame driving apparatus capable of adjusting the height includes inner legs(500), a spring, a roller, wheels, a wire(120), and outer legs(300). Grooves are formed on the side surface of the inner legs to the longitudinal direction. The spring is inserted into the grooves on the inner legs. The roller is combined to the lower side of the inner legs. The wheels are mounted on the lower side of the roller for rotating. The wire passes through the lower side of the roller, and is inserted into the groove of the inner legs. The inner legs are inserted into the outer legs.

Description

Regulate possible high and low drive system of frame}

It is a driving device of the equipment that wants to freely adjust the height of table, bed, desk, lift, etc. Pulling wire combined with reducer pulls the wire's torque to pull the wire and raises table, bed, desk, lift leg It is related to the frame of the mechanism that can adjust the height of the leg descends due to the elasticity of the spring and the weight of the mechanism by rotating the tension of the wire.

It is true that the bed and desk are fixed when working or sleeping on the bed or desk.

Alternatively, when various tasks such as product assembly and packaging work are performed on the work table, the size and shape of the product and the body size of the individual are different so that the height of the work table should be used for efficient work.

The existing worktable that adjusts the height of the worktable by using the power has two legs of the table so that the two legs can move up and down to adjust the height of the table.

It is true that such a structure has two legs to adjust the height of the table and support the load. Therefore, when an eccentric load is generated on one side of the work table, it is difficult to keep the table horizontal.

Patent that can adjust the height with four legs attached (10-2005-0115029) The automatic height adjustment mechanism transmits the power of the motor to the legs by the bevel gear and screw to the reducer, which makes the structure complicated and the size of the work table. According to the disadvantage that the length of the motor shaft and the length of the screw must be manufactured differently.

Such a structure has a limitation in that the cost of the product can be lowered due to the complicated configuration and the expensive manufacturing of the table.

In addition, such a work table has to move the table by separately mounting the wheels on the legs, and when you want to fix the table there is an inconvenience to lock one wheel.

In addition, since the worktable frame and legs are fixed, the product cannot be box-packed, which takes up a lot of volume, which is expensive and takes up a lot of space when moving, transporting and storing the table.

To solve this problem, double the legs of the frame with the outer legs and the inner legs so that the four legs of the device to adjust the height such as the table, bed, desk, sink, lift, etc. are simultaneously raised and lowered by the power of the motor. Allow the legs and outer legs to slide freely.

The motor power can be transmitted to the legs by the tension of the wire so that the power of the motor can be evenly transmitted to the four legs of the frame.

In addition, the wheels attached to the legs are in close contact with the ground by the vertical movement of the legs so as to move freely by pushing and pulling a frame such as a work table or a bed.

In this way, the height of the frame can be adjusted by the vertical movement of the frame legs, and in order to make the frame free to move, attach the wheels to the bottom of the legs so that the wheels are in contact with the ground when the frame descends. The lower end of the outer leg should be in close contact with the ground so that the frame is fixed.

In addition, in order to box-pack the height-adjustable frame for easy transportation, the legs must be configured so that the legs can be easily removed from the frame, and the legs can be separated or folded.

To achieve this purpose, in order to transmit the rotational force of the motor to the four legs so that the four frame legs can be raised and lowered at the same time, the power unit is configured to wind the wire with the pulley combined with the reducer.

Double the frame legs with inner and outer legs, form a plurality of grooves on the side of the inner leg in the direction of leg length, insert the compression springs facing the grooves, and let the other grooves penetrate the wire and the lower end of the roller It is equipped with a wheel that can be rotated on the lower part of the roller and slides by inserting the inner leg into the outer leg. Do not let the inner and outer legs separate from each other by the cap.

The wire of the leg is connected to the pulley combined with the motor reducer so that the pulley rotates and the wire is pulled so that the wire tension is transmitted to the top of the outer leg, the wire passes through the roller at the bottom of the inner leg, and the tension of the wire The inner leg is raised by pulling the outer leg while supporting the inner leg while pressing it.

In addition, when the inner leg is lowered by installing the rotary wheel under the inner leg roller, the wheel touches the ground so that the frame can move freely by the wheel.If you want to fix the frame, raise the frame so that the wheel falls off the ground and lower the outer leg. Make sure that the frame is fixed in close contact with the ground.

The inner leg of the compression spring acts on the inner leg and the outer leg in the direction of falling, so when the tension of the wire is less than the force of the spring plus the frame load, the table lowers due to the elasticity of the spring and the weight of the frame. .

In addition, the inner leg can be folded with the frame by a hinge to fold the legs for easy transportation and packing of the table, or the upper leg can be assembled with the frame by removing the inner leg from the frame. Form a number of bolt holes.

The present invention can freely adjust the height of the device to adjust the height, such as the work table or medical bed, desk, lift, etc. according to the physical conditions of the individual, the product when the various tasks such as the assembly of the product, the packaging of the product in the work table According to the size and shape of the table can be used to adjust the height of the individual to fit the physical conditions of the operator can reduce the fatigue of the operator and has the advantage of improving the work efficiency.

The medical bed adjusts the height of the bed according to the characteristics of the patient so that doctors and nurses can treat the patient in a more stable posture, and the wheels attached to the legs can be easily changed to freely move or fix the bed or table. There is a merit that it can be convenient.

If the two legs of the height-adjustable frame support the frame with four legs rather than supporting the table and the bed, there is an advantage that the table can be used stably even when an eccentric load is applied to one side of the frame.

Power transmission of the height adjustment frame is transmitted to the wire. By adjusting the length of the wire, the size of the table, bed, desk, etc. can be freely changed to make the height adjustment frame, thereby simplifying the process and making products of various specifications at low cost. There is an advantage.

The height-adjustable frame can be applied to any position that requires height adjustment, such as a table, bed, desk, lift, etc., so that the height can be adjusted freely to suit the user's environment according to the physical condition of the individual, and the four wheels can be used simultaneously. By moving the legs up or down with the ground, the frame can be moved and fixed easily, allowing a more convenient working environment and life.

In addition, the frame and the legs can be folded or detached, and the height-adjustable electric frame can be box-packed, which is easy to transport and takes up less space when storing.

1 is a perspective view of the bed cut in conjunction with the height adjustment frame
Figure 2 is a perspective view of one side of the work table top cut away
3 is a perspective view showing a frame in a state where the work table top plate of FIG. 2 is removed;
Figure 4 is a perspective view showing a drive unit extending the reducer shaft of the height adjustment work table.
5 is a projection of the projection height adjustable legs
Figure 6 is an assembly view showing the assembly of the height adjustable legs
7 is an assembly view of a height adjustable leg configured such that the inner leg and outer leg slide by the bearing unit.
8 is a cross-sectional view showing a state in which the wheel is in contact with the ground in a cross-sectional view of the height adjustable leg.
9 is a perspective view showing another driving method of the height adjustable leg.

Hereinafter, specific embodiments of the present invention will be described with reference to the accompanying drawings.

It should be noted that like elements or like parts in the figures are indicated by the same reference numerals as much as possible.

In addition, an enlarged view of an assembly view showing an enlarged portion of the components is the same as the components having the same function.

Figure 3 is a perspective view showing a state in which the work table top plate 200 is removed in the reducer coupled to the motor 100 in the center to reduce the rotational speed of the motor and increase the rotational force so that 1/4 of the wire thickness into the reducer shaft The groove is coupled to the pulley 110 formed in a spiral so that the wire 120 can be neatly wound to the pulley 110.

Forming a helical groove in the pulley 110 is intended to prevent the wire 120 from overlapping as well as maintaining the straight speed of the wire when the wire 120 is wound by the pulley 110.

The edge of the pulley 110 has a handrail so that the wire 120 cannot be separated.

The wire 120 has a pulley 110 in the center to be unfolded in both directions, and a separator in the center of the pulley 110 to prevent the wires from being entangled with each other when the wire is wound on the pulley 110.

3-1 is a driving device configured to couple the pulley 110 to the extended shaft of the reducer 140 of the motor 100 so that the wire 120 may be wound around the pulley 110.

The components and driving mechanism of the height adjustable frame 700 will be described in more detail with reference to FIGS. 5, 6, 7, 8, and 9.

6 is composed of the outer leg 300 and the inner leg 500 of the leg assembly of the height-adjustable frame 700.

The inner leg 500 has a plurality of grooves formed on the side thereof in the leg length direction, and the bolt holes are formed at the upper end thereof so as to be easily assembled with the frame 700.

The lower end of the inner leg 500 is coupled to the roller (530) coupled to the module (A) and the compression spring 510 is raised to the lower portion (540) of the module (A) is compressed to face the groove on both sides of the inner leg (500) The spring 510 is inserted and the wire 120 is inserted into the other side groove to allow the wire 120 to be inserted into the groove opposite to the inner leg 500 facing through the roller 530 under the module A.

Module (A) is a collection of individual parts together to form a module (A) in this form to combine the legs for convenience of work and each component may be individually coupled to the inner leg.

The lower portion of the module (A) is equipped with a wheel 520 that can rotate.

The assembled inner leg 500 is inserted into the outer leg 300 and the lower cap 320 having a hole is mounted on the lower end of the outer leg 300 so that the inner leg 500 is not separated from the lower leg 300. And the upper leg 300, through the inner leg 500 through the upper end of the compression spring 510 with the stopper 310b by pressing the upper cap 310 to prevent the spring from being separated and the spring 510 Elasticity to act on the outer leg 300 and the inner leg 500.

The end 120a of the wire is fixed to the wire hanger 310a at the top of the upper cap 310.

7 is a circular leg shape, the configuration of the leg is the same as the configuration of Figure 6 and the other of the components is the inner leg by combining the bearing unit 330 between the outer leg 300 and the inner leg 500 500 is configured to slide by the outer leg 300 and the bearing unit 330.

The bearing unit 330 is inserted into the top of the outer leg 300 and the spring 510 and the wire 120 is inserted into both sides of the inner leg 500 and the wheel 520 that can rotate on the lower inner leg 500 The inner leg 500 combined with the mounted module (A) is assembled by passing through the bearing unit 330, and the lower cap 320 is mounted on the lower end of the outer leg 300, and the upper end penetrates the inner leg 500. The stopper 310b of the upper cap 310 presses the upper end of the spring 510 and couples the wire end 120a to the wire hanger 310a.

6 and 7 show the projection of the height adjustable leg assembled as shown in FIG.

8 is a cross-sectional view of the height-adjustable table leg, and the operation principle of the vertical motion of the leg will be described with reference to FIG.

In the cross-sectional view there is a lot of space between the inner leg 500 and the outer leg 300, but this is a cross-sectional view showing a groove and a groove into which the wire 120 of the inner leg 500 enters. By reducing the interval of the leg 500, the inner leg 500 and the outer leg 300 should not shake each other.

The leg of FIG. 6 slides by friction between the inner wall of the outer leg 300 and the outer wall of the inner leg 500 such that the inner leg 500 and the outer leg 300 move up and down.

In the leg of FIG. 7, the bearing unit 330 is coupled between the inner leg 500 and the outer leg 300 such that the inner leg 500 and the outer leg 300 slide by the bearing.

The wire 120 penetrates the drool 130 fixed to the frame 700, passes through the groove of the inner leg 500, and passes through the lower portion of the roller 530 of the module A. Fixed to the wire hanger 310a of 310,

Compression spring 510 to the lower end of the inner leg 500 and the outer leg 300, the upper cap 310, the stopper 310b to press the elasticity of the spring 510 and the lower portion of the module (A) wheels 520 ) To allow the wheel 520 to penetrate the lower leg 320 of the outer leg 300, which is perforated.

When the pulley 110 is rotated by the rotational force of the motor 100, the pulley 110 pulls the wire 120 and penetrates the roller 530 of the lower module A of the inner leg 500 so that the outer cap 300 is the upper cap. When the tension reaches the wire end 120a fixed at 310 and the wire 120 is pulled by the wire 120 as a support for the inner leg 500, the outer leg 300 descends while the tension acts in the opposite direction. Compress the spring 510 that is elastically acting and the outer leg 300 pushes the ground to raise the inner leg 500.

The state before and after the rise of the inner leg 500 is shown in FIGS.

When the leg raised in this way descends, the motor 100 rotates in reverse and the pulley 110 rotates in the opposite direction to the rotational direction in which the wire 120 is raised, and when the wire 120 is released, the tension applied to the wire 120 is decreased. When the tension of the wire 120 is smaller than the combined force of the spring 510 and the weight of the table weight, the inner leg 500 is lowered.

When moving the work table or bed to reduce the tension of the wire 120 to raise the outer leg 300 to the elasticity of the spring 120 so that the lower end of the outer leg 300 falls from the ground and the inner leg 500 The wheel 520 mounted at the bottom protrudes into the lower leg cap 320 hole to allow the wheel 520 to be in close contact with the ground to move the work table or bed.

9 is the same configuration as FIGS. 6 and 7, but the driving method is different, the driving method of FIG. 6 leg is the inner leg 500 is fixed to the frame 700 to support the inner leg 500 as the outer leg ( 300 is a method of pulling the wire 120, the driving method of Figure 9 is the outer leg 300 is fixed to the frame 700 so that the wire 120 pulls the inner leg 500, the end of the wire (120a) ) Is fixed to the upper end of the inner leg 500 and the wire 120 is connected to the pulley 110 coupled to the motor reducer shaft through the roller 530 coupled to the outer lower and upper ends of the outer leg 300.

The tension of the wire 120 pulls the upper end of the inner leg 500 to support the outer leg 300 so that the inner leg 500 descends and pushes the ground to raise the frame 700.

The lower end of the inner leg 500 is attached to the wheel 520 to facilitate the movement of the frame 700.

Such a configuration is such that the wheel 520 falls off the ground when the frame 700 descends and the wheel 520 touches the ground when the frame 700 descends. It is a driving method.

Figure 9 shows the assembly of the components, the state of the outer leg 300 and the raised leg in the completed state sequentially.

5 and 9 are coupled to the edge of the table, respectively, and the wire 120 is connected to the pulley 110 through the pulley 130 so that the wire 120 faces the pulley 110. 3 shows a height adjustable table in a state where the top plate 200 is placed on the upper portion of the frame 700 of FIG. 3.

4 is a power unit configured to wind the wire 120 on the pulleys 110 on both sides by extending the shaft of the reducer 140, and the components of the height adjustable legs are the same as those of FIG. 6 and FIG.

1 illustrates an example in which a mattress 1000 is placed on a table of FIG. 2 and used as a bed.

1000: mattress 200: top plate 700: frame 300: outer leg
100: motor 110: pulley 120: wire 130: pulley 530: roller
500: inner leg 140: gearbox 150: gear shaft 160: bearing bracket
510: compression spring 520: wheel 540: module lower part 320: lower cap
310: upper cap 310a: wire hanger 310b: stopper 120a: wire end
A: Module 330: Bearing Unit

Claims (8)

In the frame that can adjust the height and the inner leg 500, the groove is formed in the leg length direction on the side of the leg and
Spring 510 is inserted into the inner leg (500) groove and
Roller 530 is combined with the inner leg (500) bottom
A rotatable wheel 520 mounted to the bottom of the roller 520 and
The wire 120 penetrates below the roller 530 and is inserted into the inner leg 500 groove.
The inner leg 500 coupled to the shape is inserted into the outer leg 300 and the upper cap 310 penetrates through the inner leg 500 and is coupled to the top of the outer leg 300 to spring with an upper cap stopper 310b. Press the top of the 510 and the wire end 120a is fixed to the wire hanger 310a of the upper cap 310, and the bottom of the outer leg 300 is coupled to the lower cap 320 having a hole to resiliency of the spring 510. The outer leg 300 and the inner leg 500, the leg is always working on the bottom.
Claim 1 and the bearing unit 330 and inserted into the upper leg of the outer leg 300 is coupled
The inner leg 500 of claim 1 penetrates through the bearing unit 330 and slides by the bearing unit 330, and combines the upper cap 310 to the upper part of the bearing unit 330, and the lower cap to the lower end of the outer leg 300. Combination of the 320 is the leg of the spring (510) inserted into the inner leg 500 groove is constantly acting on the top of the outer leg 300 and the bottom of the inner leg (500).
The inner leg 500 is formed with a groove in the leg length direction on the side of the leg
Spring 510 is inserted into the inner leg (500) groove and
Outer leg 300 and the roller 530 coupled to the outer side top and bottom
The inner leg 500 is inserted into the outer leg 300 and the wire 120 passes through the roller 530 coupled to the outer top and bottom of the outer leg 300 so that the wire end 120a is the inner leg 500. Fixed to the top and the upper cap 310 and the lower cap 320 coupled to the upper and lower legs of the outer leg (300).
The legs of claim 1, wherein the legs are coupled to the edges of the frame 700, and the wires 120 connected to the respective legs are connected to the pulleys 110 coupled with the reduction gear shafts of the motor 100 to pulleys 110 by the rotational force of the motor. Rotate and pull the wire 120, the tension of the wire 120 to support the inner leg 500, pull the outer leg 300, the outer leg 300 is lowered and the inner leg 500 is raised frame 700 ) Is increased and the tension of the wire 120 is reduced by the reverse rotation of the motor 100 so that the inner leg 500 is lowered due to the elasticity of the spring 510 and the weight of the frame 700 to lower the frame. Electric frame.
The leg of claim 3 is coupled to the edge of the frame 700 and the wire 120 connected to each leg is connected to the pulley 110 coupled with the motor 100 reducer shaft to rotate the pulley 110 by the rotational force of the motor. The wire 120 is wound so that the tension of the wire 120 supports the outer leg 300 and pulls the inner leg 500 so that the inner leg 500 pushes the ground to raise the frame 700 and the motor 100. An electric frame having a structure in which the outer leg 300 is lowered due to the elasticity of the spring 510 and the weight of the frame 700 by lowering the tension of the wire 120 by the reverse rotation of the frame 700.
The legs of claim 1, wherein the legs are coupled to the edges of the frame 700, and the wires 120 coupled to the respective legs are rotated by the handles, and the pulleys 110 are engaged with the winches that rotate. 110 rotates and pulls the wire 120, the frame 700 rises with the tension of the wire 120, and the tension of the wire 700 decreases, thereby causing the elasticity of the spring 510 and the weight of the frame 700. Manual frame having a structure that the frame 700 is lowered.
A work table, a desk, or a lift with the upper plate coupled to the upper part of the frame of claim 4.
The bed or bed on which the upper plate or the bed ribs are combined on the upper part of the frame of claim 4 and the claim 5, and the mattress 1000 is placed on the upper part.

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