WO2014058241A1 - Movable lifting device comprising auxiliary travel system capable of adjusting rotating force - Google Patents

Description

Movable lifting device with driving assistance system with adjustable torque

The present invention relates to a mobile lifting device, and more particularly, to a driving assistance system capable of adjusting a rotational force of which a rotational force of a driving wheel which assists the driving of a lifting device is changed according to the load of the lifting device and the strength of an external force provided by a user. It relates to a mobile lifting device provided.

Recently, much attention has been paid to the research and development of elderly-friendly articles that can improve the convenience of the user and reduce the economic burden due to nursing care protection according to the rapid increase of the elderly population.

In general, care for the elderly is carried out at home or in an aged specialty care facility. Meal, bathing, bowel movements, and transportation and movement are the main activities in the performance of daily activities.

In particular, elderly people who are uncomfortable with their own needs desperately need help, so related technology development is required.

Based on such an environment, various products related to various types of beds or transfer devices for transferring a user have been recently developed, but product development through systematic research is insufficient.

In particular, a carrier having a separate driving assistance unit has been developed in various ways to reduce the external force used when the user is seated on the bed and then directly transferred by the user.

However, in the conventional apparatus, although the user assists driving when the bed is moved by the caregiver, there is a problem in that it is difficult for the user to adjust the driving speed and rotational force of the driving assistance unit. In particular, since the user needs more force due to the load of the bed part when climbing the inclined road, there is a problem that it is difficult to manipulate the traveling speed and the rotational force of the driving assistance unit.

An object of the present invention is to solve the problems of the conventional mobile lifting device, unlike the conventional mobile lifting device that must be operated manually, provided with a separate driving wheel to assist the movement of the lifting unit, as well as the control unit To provide a mobile lifting device having a traveling assistance system capable of adjusting the rotational force to adjust the rotational force of the driving wheel in response to the external force generated between the user and the lifting unit.

And the present invention is configured to include a function to stop the driving wheel by the user's selection during the running of the lifting unit using the rotary stopper provided in the driving assistance unit driving assistance system capable of adjusting the torque can be used more safely by the user The present invention provides a movable lifting device provided.

The objects of the present invention are not limited to the above-mentioned objects, and other objects that are not mentioned will be clearly understood by those skilled in the art from the following description.

In order to solve the above problems, the present invention, the base having a plurality of moving wheels, the bed portion to which the user is seated and is coupled to the base is formed extending in the upper direction so that the bed portion is located above a certain height from the ground A lifting unit including a lifting frame which supports and selectively adjusts the height of the bed, a driving wheel coupled to the base and grounded to the ground, and a driving motor providing power to the driving wheel. The driving aid unit which is connected to the driving force and the lifting unit, the rotational force is controlled, the handle is gripped by the user, the sensing sensor for sensing the external force acting on the handle and transmitting as an electrical signal and the electrical signal measured by the sensing sensor Adjusting the operating state and the rotational force of the drive wheel It includes a control unit including a control unit.

The controller may vary the rotational force of the driving motor according to the strength of the electrical signal measured by the sensor.

The control unit may divide the intensity of the electrical signal measured by the detection sensor into a plurality of regions so that the driving motor operates with a uniform rotational force in each region.

The controller may be configured to rotate the driving wheel with different rotational force for each of a plurality of regions according to the strength of the electrical signal measured by the detection sensor.

In addition, the control unit may be characterized in that the driving wheel to the no-load rotation selectively depending on the strength of the external force acting on the sensor.

In addition, the handle is hinged to the lifting frame may be characterized in that the coupling angle is selectively adjusted by an external force.

Here, the detection sensor may be characterized in that the electrical signal changes by detecting the external force acting according to the rotation angle of the lifting frame and the handle.

In addition, the handle may be coupled to the lifting frame to be tiltable in the front and rear or up and down directions.

In addition, the handle may be characterized in that it is formed to be capable of shrinkage and tension in all directions according to the progress direction of the lifting unit.

In addition, the detection sensor may be characterized in that the electrical signal changes by detecting the external force acting according to the degree of shrinkage and tension of the handle.

In addition, the driving wheel may be selectively grounded with the ground.

In addition, the driving assistance unit may be characterized in that the base is configured to elastically support the drive wheel.

The driving assistance unit may further include a separate rotation stopper for selectively stopping the operation of the driving wheel.

In addition, the elevating frame has a vertical axis of rotation and may be rotatably coupled with the base to selectively adjust the position of the bed portion.

According to the present invention to solve the above problems has the following effects.

Unlike the conventional lifting device, it is equipped with a separate driving assistance unit to assist driving when moving, reducing the physical burden of the user, and at the same time, a separate detection sensor is provided on the handle that the user grips to load and lift the mobile lifting device. By adjusting the rotational force of the driving wheel according to the strength of the pressure generated by the external force provided by the user, it selectively assists the driving by the load acting according to the traveling direction of the mobile lifting device and at the same time according to the magnitude of the load. The intensity is also controlled.

In addition, the driving assistance unit is provided with a separate connecting link and the shock absorbing member to elastically support the driving wheel, there is an effect that can increase the traction with the ground and the impact according to the ground conditions when the mobile lifting device is moved.

In addition, by providing a separate rotation stopper to the driving assistance unit is configured to allow the user to selectively stop the rotation of the drive wheels, the user can determine the running of the mobile lifting device in a desired state to prevent safety accidents There is.

1 is a view schematically showing the configuration of a mobile lifting device according to an embodiment of the present invention;

2 is a view showing a state in which the bed portion is raised and lowered in the mobile lifting device of FIG.

3 is a view showing a handle configuration provided in the movable lifting device of FIG.

4 is a view showing a state in which the rotational force of the drive motor is adjusted according to the strength of the electrical signal generated by the external force acting on the sensor in the lifting device of FIG.

5 is a view schematically showing a configuration provided with a handle of the modified form in the lifting device of FIG.

6 is a view showing a handle configuration provided in the movable lifting device of FIG. And

FIG. 7 is a view illustrating a configuration in which the driving wheel is elastically grounded with the ground in the movable lifting apparatus of FIG. 1.

Exemplary embodiments of a mobile lifting apparatus equipped with a traveling assistance system capable of adjusting the rotational force according to the present invention configured as described above will be described with reference to the accompanying drawings. However, this is not intended to limit the present invention to a specific form, but to help a more clear understanding through the present embodiment.

In the description of this embodiment, the same name and the same reference numerals are used for the same configuration and additional description thereof will be omitted.

First, referring to FIGS. 1 to 3, a configuration of a mobile lifting apparatus having a driving assistance system capable of adjusting a rotational force according to an embodiment of the present invention will be described.

1 is a view schematically showing the configuration of a mobile lifting device according to an embodiment of the present invention, Figure 2 is a view showing a state in which the bed portion is raised and lowered in the mobile lifting device of Figure 1, Figure 3 is a mobile of Figure 1 The figure which showed the handle structure provided in the lifting apparatus.

As shown, the mobile lifting apparatus according to the exemplary embodiment of the present invention includes a lifting unit 100, a driving assistance unit 200, and a control unit 300.

The lifting unit 100 has a configuration similar to that of a general movable lifting bed and includes a base 110, a bed part 120, and a lifting frame 130.

The base 110 supports the entire lifting device and includes a plurality of moving wheels 112 to allow the lifting unit 100 to move by an external force.

The bed 120 may be disposed above the base 110 to allow the user to be seated and have a general bed shape. In this case, the bed 120 may be configured to transport a heavy object, as well as the shape of the bed specifically seated.

In the present embodiment, the bed 120 is configured in the form of a bed on which the user is seated and is composed of a reclining bed that can be partially adjusted inclination angle through rotation.

The elevating frame 130 is coupled to the base 110 and is formed to extend in the upper direction and supports the bed portion 120 is located above a certain height from the ground. Here, the lifting frame 130 is configured to selectively adjust the height of the bed portion 120.

Looking at the configuration in which the position of the bed portion 120 is adjusted in the vertical direction by the elevating frame 130, the elevating frame 130 is coupled to the bed portion 120 in one side in the vertical direction It is formed in a shape surrounding the portion and is provided with a coupling guide 132 coupled to the elevating frame 130 and the elevating.

As described above, the coupling guide 132 is configured to allow the bed 120 to be coupled to the lifting frame 130 and to move up and down along the up and down direction of the lifting frame 130. Configured to adjust the height of 120.

On the other hand, the lifting frame 130 is rotatably coupled with the base 110 is configured to adjust the position of the bed portion 120. That is, as shown in the lifting frame 130 is rotatably coupled to have a rotation axis in the vertical direction on the upper surface of the base 110, the lifting frame 130 and the base 110 Through the rotation of the bed 120 is adjusted the position.

The lifting unit 100 configured as described above is configured to raise and lower the bed 120 as shown in FIG. 2.

In the present exemplary embodiment, the lifting unit 100 is configured in the form of a general lifting bed that moves up and down, but alternatively, a general tray or a carrier may be used as well as the lifting unit 100.

The driving assistance unit 200 includes a driving wheel 210 and a driving motor 220, and the driving wheel 210 is coupled to the base 110 to be grounded with the ground. In addition, the driving motor 220 is connected to the driving wheel 210 is configured to rotate the driving wheel 210.

That is, the driving assistance unit 200 is additionally provided in addition to the plurality of moving wheels 112 to rotate the driving wheel 210 as the driving motor 220 operates. Here, the drive wheel 210 is rotated by the drive motor 220, the drive motor 220 is configured to adjust the rotational force.

As shown, the drive wheel 210 and the drive motor 220 may be directly connected to each other, or may be arranged to be spaced apart from each other, and may be configured to transmit power by having separate power transmission means (not shown). have.

In addition, the driving wheel 210 is disposed between the moving wheels 112 so as not to disturb the traveling direction when the lifting unit 100 moves by an external force.

As such, the driving assistance unit 200 is configured to selectively operate the driving wheel 210, and is configured to assist driving when the lifting unit 100 moves.

On the other hand, in the driving assistance unit 200, the driving wheel 210 may be configured to be selectively grounded with the ground. Although not shown, the drive wheel 210 is selectively grounded with the ground, so that the user can selectively control whether the lifting unit 100 is moved by the user.

In addition, the driving wheel 210 may further include a separate clutch (not shown), so that the driving wheel 210 may be grounded on the ground, but may be configured to allow no load rotation when the user does not want to operate the wheel. That is, the driving wheel 210 is grounded to the ground and rotates together when the lifting unit 100 moves, but is not configured to transmit the rotational force according to the driving motor 220, the drive motor 220 Can be prevented from being broken.

The control unit 300 is configured to adjust the operation state of the driving assistance unit 200, and largely comprises a handle 310, a detection sensor 320 and a control unit (not shown).

The handle 310 is coupled to the lifting unit 100 so as to be gripped by the user so that the user can move the lifting unit 100. In this embodiment, as shown, the handle 310 is coupled to the coupling guide 132. Here, the handle 310 may be configured in various forms, in the present embodiment, the handle 310 has a square ring shape and a part is coupled to the coupling guide 132 is configured.

More specifically, as shown in FIG. 2, the handle 310 protrudes in a symmetrical form with respect to the lifting frame 130 and has a fixing member 314 formed in a 'c' shape in which an intermediate portion is bent. It is formed similarly to the fixing member 314 and consists of an operation member 312 coupled to correspond to each other to form a square shape. Here, the fixing member 314 and the operation member 312 are respectively disposed in the traveling direction of the lifting unit 100 and the direction opposite thereto, and configured to be tensioned and contracted in an area coupled to each other by an external force. do.

Thus, when the user grips the handle 310 and pushes the lifting unit 100, the fixing member 314 and the operating member 312 are contracted with each other, and when pulling the lifting unit 100, The fixing member 314 and the operation member 312 is configured to be tensioned.

The detection sensor 320 is provided in the handle 310 and is configured to detect an external force acting as an electrical signal. As shown, the detection sensor 320 is disposed to be symmetrical with each other on the handle 310 of the rectangular ring shape and the external force acting on the handle 310 is changed into an electrical signal.

In this embodiment, the detection sensor 320 is provided so that the pair is symmetrical to each other in the region where the fixing member 314 and the operation member 312 is coupled as shown. Therefore, the electrical signal is generated according to the tension and contraction of the fixing member 314 and the operation member 312, and the intensity of the electrical signal generated according to the degree of the intensity is also changed.

The controller (not shown) adjusts the operation and rotational force of the driving wheel 210 according to the electrical signal measured by the sensor 320. That is, the control unit controls the operation of the driving wheel 210 by the user applying an external force to the lifting unit 100 by receiving the strength of the pressure measured by the detection sensor 320 as an electrical signal. More specifically, the detection sensor 320 measures the pressure generated by the handle 310 to change the strength of the electrical signal, and the control unit receives the operation to operate the driving motor 220.

On the other hand, the control unit may be configured to change the rotational force of the drive motor 220 according to the strength of the electrical signal measured by the sensor 320. That is, the strength of the external force generated by the user who grips the handle 310 and the load of the lifting unit 100 is detected by the detection sensor 320, and the controller is configured to drive the drive according to the detected external force. The rotational force strength of the motor 220 is changed.

As described above, the handle 310 is composed of the fixing member 314 and the operation member 312 and is formed to be capable of contraction and tension in the front-rear direction along the traveling direction of the lifting unit 100. Accordingly, the fixing member 314 and the operation member 312 are caused to contract and tension by external force applied to the handle 310 and the lifting unit 100, and the detection sensor according to the degree of contraction and tension. The intensity of the electrical signal detected and generated at 320 is configured to vary.

Thus, the controller adjusts whether the driving motor 220 is rotated and the strength of the rotational force according to the strength of the electrical signal generated by the sensor 320.

For example, when the user pushes the lifting unit 100 to climb the inclined uphill, more force is required than when pushing the lifting unit 100 on a general flat surface. Accordingly, when the inclined ascent climbs, the detection sensor 320 detects not only the force pushing the lifting unit 100 but also the load of the lifting unit 100 to detect the rotational force of the driving motor 220. Allow this to be adjusted.

The control unit 300 configured as described above, the driving assistance unit by detecting and measuring the strength of the force generated by the external force acting through the handle 310 that the user grips and the load of the lifting unit 100 By selectively operating the (200), it is configured to facilitate the driving when the user moves the lifting unit 100

Meanwhile, although not shown in the drawing, the handle 310 further includes a separate operation means (not shown), and the driving assistance unit 200 is operated by the operation means and optionally the driving wheel 210. It may be configured to further include a rotation stopper (not shown) to stop the rotation state of the.

Therefore, the user can stably stop the lifting unit 100 by driving the rotary stopper through the operation means while the lifting unit 100 is running. In this way, the rotation stopper may be further provided to prevent a safety accident that may occur while driving the lifting unit 100.

The configuration for stopping the rotation of the drive wheel 210 may be applied in various configurations and in this embodiment is generally configured in the form of a brake to stop the rotation state of the drive wheel 210 by the operation through the operation means. It is configured to be.

Next, the state in which the rotational speed of the driving wheel 210 is adjusted by the control unit 300 will be described with reference to FIG. 4.

4 is a view showing a state in which the rotational force of the driving motor 220 is adjusted according to the strength of the electrical signal generated by the external force acting on the sensor 320 in the lifting device of FIG.

The control unit is configured to adjust the rotational force of the drive motor 220 according to the strength of the electrical signal generated by the external force detected by the sensor 320 and in this embodiment the rotational force of the drive motor 220 It is configured to increase in stages without changing continuously. Here, in each step, the drive motor 220 is rotated at a uniform intensity.

Looking at the graph shown, the X axis represents the strength of the external force sensed by the sensor 320 and the Y axis represents the rotational force strength of the drive motor 220.

Looking at the graph shown, A is a continuous change in the intensity of the electrical signal generated according to the external force detected by the sensor 320, the strength is continuously increased in accordance with the external force applied to the handle 310 do.

And B represents the strength of the rotational force that the drive motor 220 is rotated in accordance with the value detected by the sensor 320.

However, as shown, although the graph of A is shown in a continuous form, it is understood that the graph of B is divided into a plurality of regions so that the driving motor 220 is configured to rotate at the same intensity within each region. Can be.

That is, the controller divides the intensity of the electrical signal measured by the sensing sensor 320 into a plurality of regions so that the driving motor 220 operates with a uniform rotational force in each region, and the driving motor 220. Is configured to rotate the drive wheel 210 with different rotational force for each region according to the strength of the electrical signal measured by the sensor 320.

Accordingly, the controller divides the electrical signal measured by the detection sensor 320 into a plurality of areas according to the strength thereof, and in each of the corresponding areas, the driving motor 220 has the driving wheel 210 with a predetermined rotational force. Rotate).

Thus, the control unit senses the intensity of the electrical signal generated by the detection sensor 320, and rotates the drive wheel 210 with the rotational force in the region to which the intensity of the detected electrical signal belongs.

For example, referring to the illustrated graph, when the strength of the electrical signal generated by detecting the external force in the sensor 320 is 5 and 6, the driving motor 220 has the rotational force of about 15 and the driving motor 220. Rotate the, and when the intensity of the electrical signal generated by the sensor 320 is 9, the drive motor 220 rotates the drive motor 220 with a rotational force of about 25.

As described above, the driving motor 220 rotates the driving motor 220 with the rotational force in the corresponding area according to the strength of the electrical signal generated by the sensor 320.

On the other hand, the control unit may be configured to selectively rotate the driving wheel 210 without load in accordance with the strength of the external force acting on the sensor 320. That is, when the external force acting on the detection sensor 320 is below a predetermined level, the controller causes the driving wheel 210 to rotate without load without operating the driving motor 220. In this case, the driving wheel 210 may be configured to have a separate clutch as described above so that the driving wheel 210 may be rotated without load so that the driving motor 220 does not fail.

Next, referring to FIGS. 5 and 6, the modified shape of the handle 310 is as follows.

5 is a view schematically showing a configuration provided with a handle 310 of the modified form in the mobile lifting device of Figure 1 and Figure 6 is a view showing a configuration of the handle 310 provided in the mobile lifting device of FIG. .

As shown, the basic configuration is the same as the configuration described above, but the configuration of the handle 310 is deformed, the handle 310 is configured in a pair to the traveling direction of the lifting unit 100 It is formed to extend and protrude in both directions to the coupling guide 132.

The handle 310 is composed of a first member 316 and a second member 318 as shown, each has a predetermined length and one side is coupled to the coupling guide 132. Here, each of the first member 316 and the second member 318 are symmetrically coupled to each other with respect to the coupling guide 132 and the detection sensor 320 in an area coupled with the coupling guide 132. Is provided.

More specifically with reference to FIG. 6 with respect to the configuration of the handle 310, each of the first member 316 and the second member 318 is hinged to the coupling guide 132 is selected by an external force Combination angle is configured to be adjusted. That is, each of the first member 316 and the second member 318 is rotated in the front and rear directions according to the traveling direction of the lifting unit 100 is configured to change the coupling angle with the coupling guide 132. .

In addition, the detection sensor 320 is provided in an area where the first member 316 and the second member 318 are coupled to the coupling guide 132 so that the first member 316 and the second member are provided. The external force acting on the lifting unit 100 and the handle 310 is sensed according to the rotation state of the 318.

Here, the detection sensor 320 is configured to change the intensity of the electrical signal generated by the detection sensor 320 in accordance with the rotation angle of the first member 316 and the second member 318 to control the control unit. The rotational force of the drive motor 220 is adjusted through.

Next, the configuration of the driving assistance unit 200 will be described with reference to FIG. 7.

7 is a view showing a configuration in which the driving wheel 210 is elastically grounded with the ground in the mobile lifting device of FIG.

As shown in the driving assistance unit 200, the driving wheel 210 is configured to elastically ground with the ground. Looking at the configuration of the driving assistance unit 200, the driving wheel 210 is rotatably coupled with a separate connection link 230 connected to the base 110, the connection link 230 is It is rotatably coupled with the base 110. Here, the connection link 230 is connected to the shock absorbing member 240 to elastically press in the downward direction is configured to press the driving wheel 210 in the downward direction.

As shown, the shock absorbing member 240 is connected to an intermediate portion in the longitudinal direction of the connection link 230 and the other side is connected to a fixing bracket 114 protruding from the base 110. Is configured to press 230 downward.

Accordingly, the shock absorbing member 240 pressurizes the connection link 230 and causes the driving wheel 210 to be elastically grounded with the ground, and simultaneously drives the driving wheel 210 according to the state of the ground. It is configured to be able to move up and down.

As such, the driving assistance unit 200 further includes the connection link 230 and the shock absorbing member 240, so that the driving wheel 210 is elastically grounded with the ground, and thus the shock absorbing member 240 is used. The impact transmitted through the driving wheel 210 is prevented from being transmitted to the lifting unit 100.

In the present embodiment, the driving assistance unit 200 elastically supports the driving wheel 210 through the configuration including the connection link 230 and the shock absorbing member 240, unlike the hydraulic damper, pneumatic damper, spring The driving wheel 210 may be applied to the elastic support by applying the same. However, the present invention is not limited thereto, and any configuration may be applied as long as the shock transmitted from the ground through the driving wheel 210 may be buffered.

As described above, the preferred embodiments of the present invention have been described. In addition to the above-described embodiments, the present invention may be embodied in other forms without departing from the spirit or scope of the present invention. Therefore, the present embodiments are to be considered as illustrative and not restrictive, and the invention is not to be limited to the foregoing description, and may be modified within the scope of the appended claims and their equivalents.

Claims (14)

A base having a plurality of moving wheels, a bed portion on which the user is seated, and coupled to the base and extending in an upward direction to support the bed portion above a predetermined height from the ground and selectively adjust the height of the bed portion; A lifting unit including a lifting frame; A driving auxiliary unit coupled to the base and having a driving wheel grounded with the ground and a driving motor for providing power to the driving wheel, and selectively adjusting the rotational force of the driving wheel; And A handle connected to the lifting unit by a user to grip, a sensing sensor provided on the handle to sense an external force acting on the handle, and transmitted as an electrical signal, and an operating state and rotational force of the driving wheel according to the electrical signal measured by the sensing sensor. Control unit including a control unit for adjusting the; Mobile lifting device equipped with a traveling assistance system capable of adjusting the rotational force including a. The method of claim 1, The control unit, And a traveling assistance system capable of adjusting the rotational force, the rotational force of the driving motor being changed according to the strength of the electrical signal measured by the detection sensor. The method of claim 2, The control unit, A mobile lifting device having a traveling assistance system capable of adjusting the rotational force, characterized in that the electric signal measured by the sensor is divided into a plurality of regions so that the driving motor operates with a uniform rotational force in each region. . The method of claim 3, The control unit, The movable lifting device having a driving assistance system capable of adjusting the rotational force, wherein the driving motor rotates the driving wheel with different rotational force for each of a plurality of regions according to the strength of the electrical signal measured by the sensor. . The method of claim 2, The control unit, Mobile lifting device equipped with a driving assistance system capable of adjusting the rotational force, characterized in that the drive wheel is to perform a no-load rotation selectively depending on the strength of the external force acting on the sensor The method of claim 1, The handle is, The lifting lifting device is coupled to the elevating frame and is provided with a traveling assistance system capable of adjusting the rotational force, characterized in that the coupling angle is selectively adjusted by an external force. The method of claim 6, The detection sensor, A mobile lifting apparatus having a driving assistance system capable of adjusting a turning force, characterized in that an electrical signal is changed by detecting an external force acting according to a rotation angle of the lifting frame and the handle. The method of claim 6, The handle is, A mobile lifting device having a traveling assistance system capable of adjusting a rotational force coupled to the elevating frame to enable tilting forward and backward or up and down. The method of claim 1, The handle is, Mobile lifting device with a driving assistance system capable of adjusting the rotational force, characterized in that the contraction and tension in the front and rear direction in accordance with the progress direction of the lifting unit. The method of claim 9, The detection sensor, A mobile lifting device with a driving assistance system capable of adjusting a turning force, characterized in that an electrical signal is changed by sensing an external force acting on the degree of contraction and tension of the handle. The method of claim 1, The driving wheel, A mobile lifting device equipped with a driving assistance system capable of adjusting torque, characterized in that the ground is selectively grounded. The method of claim 1, The driving assistance unit, And the base is configured to elastically support the driving wheel. The method of claim 1, The driving assistance unit, And a separate rotation stopper for selectively stopping the operation of the driving wheel. The method of claim 1, The lifting frame is, A movable lifting apparatus having a driving force system capable of adjusting a rotational force, characterized by having a vertical axis of rotation and rotatably coupled to the base to selectively adjust the position of the bed.

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