KR101056667B1 - Bed with angle control function between back plate and leg plate and its control method - Google Patents

Abstract

According to the present invention, the angle between the back plate and the thigh plate can be adjusted individually or simultaneously, but the included angle between them is always maintained at a predetermined limit angle (eg, 90 degrees) or more. It is to provide a bed that can prevent the posture that is not appropriate for the source.

To this end, the bed of the present invention, the mattress support plate comprising a back plate and thigh plate rotatably installed in a segmented form on the mainframe; A slider guide provided below the main frame to guide linear movement of the slider; An angle detection slider for a back plate and an angle detection slider for a thigh plate installed to move horizontally on the slider guide; A back connection link and a thigh plate connection link coupled to the back angle detection slider and the thigh plate angle detection slider, respectively; A back link that connects the back link with the back plate and is rotatably coupled around a point of the main frame; A thigh plate link connecting the thigh plate link link and the thigh plate and rotatably coupled around the other point of the main frame; When defining an imaginary line connecting the upper end of the thigh plate and the rotating part of the back plate as a leg plate, the angle detection slider and thigh plate for the back plate so that the limit angle between the back plate and the leg plate does not become smaller than a predetermined angle It characterized in that it comprises a control unit that can be controlled only by the linear distance between the angle detection slider.

Bed, back, leg plate, between angle, limit angle, control

Description

Bed having function for controlling angle between back plate and leg plate, and method for controlling the same}

The present invention relates to a bed, and more particularly, to a nursing bed that can be automatically controlled so that the angle between the back plate and the leg plate of the bed does not become smaller than a predetermined limit angle to promote the safety of the bed user. It is about.

Beds are one of the most basic living aids that use more than one-third of a person's daily routine, and it is well known that they are the most important part of maintaining good health. It is true.

In recent years, as the elderly population has increased, the number of home care elderly people has increased, while the number of family populations supported by the elderly is decreasing. Accordingly, many home care elderly people are living alone. Therefore, the bed itself can support the daily change of the elderly on the bed, support meals, reading and watching TV, standing up on the bed, etc., to support the daily life of the individual, and also assist the caregiver when handling feces. You need a multifunctional high-tech bed.

FIG. 1 is a schematic diagram illustrating angle variables in a bed. In particular, when referring to a four-segment bed, α denotes an angle formed by the back plate 1 with a horizontal plane (hereinafter referred to as a 'back angle'), and β indicates a back plate (1). ) And the angle from the horizontal plane to the imaginary line (hereinafter referred to as the `` leg plate angle '') when imaginary line is drawn at the end point of the thigh plate 3 at the folding point of the hip plate 2, γ is the back plate 1 And the angle between the imaginary line to define the leg plate angle (hereinafter referred to as 'pinching angle'), δ is the angle from the thigh plate 3 to the shin plate 4 (hereinafter referred to as 'knee outside angle') ), ρ refers to the angle (hereinafter referred to as the 'shank plate angle') that the shank plate 4 forms a horizontal plane.

In the following description, an imaginary line drawn at the end of the thigh plate 3 at the folding point of the back plate 1 and the hip plate 2 will be understood as a 'leg plate'.

On the other hand, patients who live in bed for long periods of time may develop secondary diseases such as pressure sores or indigestion. In addition, the backrest angle α or the legrest angle β of the bed should be adjusted so that other daily life such as eating, sitting, reading, and standing up can be made easier.

However, in the case of home care bed, it can be adjusted from O degree (horizontal) up to 85 degree in case of back angle (α) according to Korean Industrial Standard (KS), and minimum in case of leg plate angle (β) It should be adjustable up to 12 degrees, and the shin plate angle (ρ) should be adjustable from 0 degrees to at least 20 degrees (see Korean Industrial Standard KS 0388, home care bed).

Therefore, in some cases, when the thigh plate 3 is raised while the back plate 1 is raised, or when the thigh plate 3 is raised with the thigh plate 3 at an angle, the back plate 1 at any moment. ) And the stamping angle γ between the leg plate can be less than 90 degrees. This condition is a very bad condition that can put a lot of pressure on the patient's abdomen, leading to death in a short time.

Therefore, this posture is a posture that must be avoided, and if this condition is necessary in a special case, it is required to follow the instructions of a medical professional.

Therefore, in the case of the adjustable bed used at home or the like, the posture in which the included angle γ is smaller than 90 degrees should not occur. Therefore, it is absolutely necessary to automatically maintain the included angle γ more than 90 degrees. need.

The present invention is to solve the above-mentioned problems, the angle between the back and thigh plate can be adjusted individually or simultaneously, but the angle between them is always able to maintain a predetermined limit angle (eg 90 degrees) or more of the user The purpose is to provide a bed that can prevent the unsuitable posture, such as severe pressure on the abdomen.

In order to achieve the above object, the present invention provides a mattress support plate including a back plate and a thigh plate rotatably installed in a segmented form on the main frame; A slider guide provided below the main frame to guide linear movement of the slider; An angle detection slider for a back plate and an angle detection slider for a thigh plate installed to move horizontally on the slider guide; A back connection link and a thigh plate connection link coupled to the back angle detection slider and the thigh plate angle detection slider, respectively; A back link that connects the back link with the back plate and is rotatably coupled around a point of the main frame; A thigh plate link connecting the thigh plate link link and the thigh plate and rotatably coupled around the other point of the main frame; When defining an imaginary line connecting the upper end of the thigh plate and the rotating part of the back plate as a leg plate, the angle detection slider and thigh plate for the back plate so that the limit angle between the back plate and the leg plate does not become smaller than a predetermined angle It provides a bed, characterized in that it comprises a control unit that can be controlled only by the linear distance between the angle detection slider.

On the other hand, according to the bed control method of the present invention for achieving the above object, the angle between the back plate and the leg plate in the state in which the leg plate angle β is a predetermined angle (γ) is larger than the predetermined limit angle In the case of raising the slope at, the slope continues to rise up to the maximum climbing angle by the control of the controller when the included angle γ reaches the predetermined limit angle before the climbing angle formed by the climbing surface and the horizontal plane reaches the predetermined maximum climbing angle. Instead, the thigh plate is lowered so that the included angle γ is controlled so as not to be smaller than a predetermined limit angle.

On the other hand, according to another control method of the bed according to the present invention for achieving the above object, in the case of increasing the leg plate angle (β) in a state where the back plate angle (α) formed between the back plate and the horizontal plane at a predetermined angle, When the included angle (γ), which is an angle between the back plate and the leg plate, reaches a predetermined limit angle, the leg plate angle (β) is no longer increased.

As the angle between the back plate and the leg plate is necessarily maintained at 90 degrees or more, the phenomenon in which the severe pressure is applied to the abdomen of the user is fundamentally solved, and thus, in terms of safety, a safer life for the patient and an elderly person are particularly safe. It can be provided.

On the other hand, the present invention can contribute to achieving the goal of improving the quality of life of the elderly by providing a new age-friendly advanced bed of ergonomic elements.

In addition, the bed of the present invention provides an effect of directly or indirectly assisting the contributor to prevent the loss of healthy labor and contribute to solving the social problems caused by the economic and psychological burden of the consignee.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to FIGS. 2 to 8B.

Example 1

2 is a front view showing a bed structure according to a first embodiment of the present invention, Figure 3 is a front view showing a state after the back angle and the leg plate angle in Figure 2, according to a first embodiment of the present invention The bed includes a mattress support plate including a back plate 1 and a thigh plate 3 rotatably installed in a segmented shape on the main frame M; A slider guide M2 provided below the main frame M to guide linear movement of the slider; A back angle detecting slider S1 and a thigh plate angle detecting slider S2 installed to move horizontally on the slider guide M2; A back connection link L1 and a thigh plate connection link L2 coupled to the back angle detection slider S1 and the thigh plate angle detection slider S2, respectively; The back link A1 connects the back link L1 and the back plate 1 and is rotatably coupled to one point of the main frame M so as to directly raise or lower the back plate 1. Wow; The thigh plate connecting link (L2) and the thigh plate (3) is connected to the other side of the main frame (M) rotatably coupled to the center around the thigh plate (3) for directly raising or lowering the thigh plate (3) A link A2; When defining a virtual line connecting the upper end of the thigh plate 3 and the rotating portion of the bottom of the back plate 1 as a leg plate, the angle between the back plate 1 and the leg plate (that is, the included angle γ) And a control unit capable of controlling only a straight line distance between the back angle detecting slider S1 and the thigh plate angle detecting slider S2 so as not to be smaller than a predetermined limit angle.

At this time, in the present embodiment, the back connecting link (L1) and the thigh plate connecting link (L2) are respectively connected to the angle detection slider (S1) and the thigh plate angle detection slider (S2) for thigh plate in the form of crossing each other. Connected.

The control unit may include a sensor capable of detecting contact between the angle detecting slider S1 for the back plate and the angle detecting slider S2 for the thigh plate, and a back driver and a thigh according to a contact detection signal between the two sliders of the sensor. It is configured to include a controller for controlling a plate driver (not shown). The driver may apply a drive motor or other various types of actuators.

The sensor may include a limit switch L / S provided on at least one side of the angle detecting slider S1 for tread plate and the angle detecting slider S2 for thigh plate.

On the other hand, the limit switch (L / S) is not necessarily provided in the angle detection slider (S1) for the back plate or the angle detection slider (S2) for the thigh plate itself. That is, a bracket (not shown) is installed on the two sliders or a link connected thereto, and a limit switch (L / S) is installed on the two sliders or the link is connected to the two sliders. Of course, it can also be configured to detect and control the included angle (γ) between the back plate 1 and the leg plate.

The operation and control process of the bed such that the included angle γ defined as the angle between the back plate 1 and the leg plate in the bed according to the first embodiment of the present invention configured as described above is not smaller than the predetermined limit angle. As follows.

As shown in FIG. 4A, the thigh plate 3 is lifted to a certain degree and the leg plate angle β is at a predetermined angle, and the limit angle γ, which is an angle between the back plate 1 and the leg plate, is defined. Assume that the back plate 1 is raised in a state larger than (eg, 90 degrees).

In the initial state, when the back plate 1 is raised by driving the back plate driver (e.g., a driving motor), the back plate angle detection slider S1 installed on the right side of the drawing moves toward the thigh plate angle detection slider S2 on the left side. (See arrow in FIG. 4A).

This is because the back connection link (L1) and thigh plate connection link (L2) coupled to the back angle detection slider (S1) and the thigh plate angle detection slider (S2), respectively, are installed in the form of intersecting with each other. Therefore, in this embodiment, as the back plate 1 and the thigh plate 3 rise, the distance between the two sliders becomes closer.

On the other hand, when the climbing plate 1 rises as described above, when the included angle γ reaches the predetermined limit angle before the climbing angle α reaches the predetermined maximum climbing angle, the climbing plate 1 is controlled by the controller. The thigh plate 3 is lowered instead of continuing to rise up to the maximum climbing angle so that the included angle γ is not smaller than a predetermined limit angle, which is in most cases the abdomen of a patient or elderly person who is a bed user of the present invention. This is to avoid the dangerous posture under pressure.

For example, the included angle γ is, for example, set at 90 degrees, which is a predetermined limit angle, even before the climbing angle, which is the angle formed between the climbing plate 1 and the horizontal plane, reaches 85 degrees, which is the maximum climbing angle specified in the Korean Industrial Standard (KS). When reaching, the back plate 1 is continuously raised to the maximum climbing angle by the control of the controller, and the thigh plate 3 is lowered to prevent the pinched angle γ from being smaller than 90 degrees, which is a predetermined limit angle. .

Then, when the back plate 1 continues to rise and the back angle reaches 85 degrees, the controller stops the upward action of the back plate 1 and the lowering action of the thigh plate 3. At this time, the back plate 1 continues to rise so that the back angle reaches 85 degrees, even if the synergistic action of the back plate 1 is stopped, the thigh plate 3 may be controlled to continue to descend.

On the other hand, unlike the case described above, in the case where the back plate 1 is raised to increase the leg plate angle β while the back angle α is at a predetermined angle, the back plate 1 and the leg plate When the angle between the included angle (γ) reaches a predetermined limit angle, the leg plate angle (β) no longer increases. That is, the climbing angle α is not lowered according to the intention to control the climbing angle mainly.

For example, when the thigh plate 3 is raised by raising the thigh plate 3 in a state where the back angle α is 85, which is the maximum climbing angle shown in the Korean Industrial Standard KS, the thigh plate 3 is increased. When the included angle γ, which is the angle between the back plate 1 and the leg plate, reaches, for example, a predetermined limit angle of 90, the leg plate angle β does not increase any more. 3) stop rising.

Example 2

5 is a view showing the kinematic structure of the bed according to the second embodiment of the present invention, Figures 6a and 6b are for explaining the operation of the bed according to the second embodiment of the present invention, Bed according to the second embodiment, the mattress support plate comprising a back plate (1) and thigh plate (3) rotatably installed in a segmented form on the main frame (M); A slider guide M2 provided below the main frame M to guide linear movement of the slider; A back angle detecting slider S1 and a thigh plate angle detecting slider S2 installed to move horizontally on the slider guide M2; A back connection link L1 and a thigh plate connection link L2 coupled to the back angle detection slider S1 and the thigh plate angle detection slider S2, respectively; The back link A1 connects the back link L1 and the back plate 1 and is rotatably coupled to one point of the main frame M so as to directly raise or lower the back plate 1. Wow; The thigh plate connecting link (L2) and the thigh plate (3) is connected to the other side of the main frame (M) rotatably coupled to the center around the thigh plate (3) for directly raising or lowering the thigh plate (3) A link A2; When defining an imaginary line connecting the upper end of the thigh plate 3 and the rotating part of the bottom of the back plate 1 as a leg plate, the included angle γ between the back plate 1 and the leg plate is less than a predetermined limit angle. It is configured to include a control unit that can be controlled only by a straight line distance between the angle detection slider (S1) and the thigh plate angle detection slider (S2) for backing so as not to become small.

At this time, the bed according to the present embodiment, the back connection link (L1) and thigh plate connection link (L2) is connected to the angle detection slider (S1) and thigh plate angle detection slider (S2) for the thigh plate, respectively, Connected in a non-intersecting form.

The control unit may include a sensor capable of detecting a distance between the back angle detecting slider S1 and the thigh plate angle detecting slider S2, and a back driver and a thigh according to a distance between the two sliders detected by the sensor. And a controller that controls the plate driver.

The sensor may include a distance displacement sensor (D / S) (linear potentiometer) capable of detecting a distance between the back angle detecting slider S1 and the thigh plate angle detecting slider S2 through a variable resistance value according to a distance displacement. The rod D / SR is fixed to the back angle detection slider S1 and the cylinder D / SS is fixed to the thigh plate angle detection slider S2.

The operation of this embodiment configured as described above is as follows.

This embodiment has a structure in which the back connecting link (L1) and the thigh plate connecting link (L2) does not cross in the configuration surface, whereby the position of the back angle detection slider (S1) and the thigh plate angle detection slider (S2) The opposite of the first embodiment and the specific configuration of the sensor is described, but the basic operation is the same as in the first embodiment described above.

That is, in the present embodiment, since the back connection link L1 and the thigh plate connection link L2 coupled to the back angle detection slider S1 and the thigh plate angle detection slider S2 are not intersected with each other, Different from the first embodiment in that the distance between the sliders increases as the back plate 1 and the thigh plate 3 rise, but the basic working effects are the same.

First, when the climbing plate 1 is explained, when the climbing plate 1 rises, the included angle α reaches the predetermined limit angle before the climbing angle α reaches the predetermined maximum climbing angle. By the control of the controller, the back plate 1 continues to rise up to the maximum back angle, but instead the thigh plate 3 descends so that the included angle γ is not smaller than a predetermined limit angle.

On the other hand, unlike when the back plate 1 is raised, when the leg plate angle β is increased while the back plate angle α is at a predetermined angle, the included angle that is the angle between the back plate 1 and the leg plate is increased. When γ reaches a predetermined limit angle, the rise of the thigh plate 3 is stopped so that the leg plate angle β no longer increases.

Example 3

7 is a schematic view showing the kinematic structure of the bed according to the third embodiment of the present invention, Figures 8a and 8b is a detailed view for explaining the structure and operation of the bed according to the third embodiment of the present invention, The bed according to the third embodiment of the present invention is basically the same as the bed structure of the second embodiment 2, but there is a difference in the installation structure of the distance displacement sensor (D / S).

Referring to FIGS. 7 and 8A and 8B, the present exemplary embodiment may detect a distance between a back angle detecting slider S1 and a thigh plate angle detecting slider S2 through a variable resistance value according to a distance displacement. A distance potentiometer (D / S) is installed, but not between the two sliders, but between the individual sliders and the separate mounting brackets B1 and B2 provided outside the individual sliders. ) Is installed.

Specifically, the first mount bracket B1 is installed on the slider guide M2 at a predetermined distance from the outside of the angle detecting slider S1 for climbing, and the angle detecting slider for climbing the first mounting bracket Install distance displacement sensor (D / S) between S1).

Then, a second mount bracket B2 is installed on the slider guide M2 at a predetermined distance from the outside of the angle detection slider S2 for the thigh plate, and the angle detection slider S2 for the second mount bracket and the thigh plate is installed. Install distance displacement sensor (D / S) between

In this embodiment configured as described above, as the back plate 1 and the thigh plate 3 rise, the distance between the sliders increases, and instead, the distance between each mount bracket and the slider becomes closer.

That is, in the present embodiment, there is a difference in the sensing structure of the separation distance between the two sliders, and the process for controlling the limit angle for the included angle between the back plate and the leg plate according to the detection signal is the same as in the second embodiment. The description is omitted.

As described above, the present invention allows the angle between the back plate 1 and the thigh plate 3 to be adjusted individually or simultaneously by the gap checking device and the link mechanism between the two sliders, but the included angle between them is always a defined limit angle. By maintaining the abnormality, the user's abdomen is severely stressed.

In the second and third embodiments of the present invention, the case where the distance displacement sensor (D / S) is applied as a sensor is exemplified. However, in the above embodiments, the limit switch (L / S) is installed only by changing the installation structure. The detection and control of the limit angle is possible, and on the contrary, the distance displacement sensor (D / S) can be applied to the first embodiment by changing the sensor installation structure.

Meanwhile, the sensor in each of the above embodiments may be replaced by an ultrasonic sensor or an optical distance measuring sensor capable of detecting a gap between the angle detecting slider S1 for thigh plate and the angle detecting slider S2 for thigh plate by changing the installation structure. Of course you can.

Therefore, unless the present invention is not limited to the above-described embodiments, various changes and modifications are possible without departing from the scope of the technical spirit of the present invention.

The present invention can contribute to the achievement of the goal of improving the quality of life of the elderly generation by providing a new age-friendly advanced bed of ergonomic elements, and prevents the loss of healthy labor personnel by directly or indirectly assisting the caregiver It is an invention that is highly applicable to the industry, providing an effect that contributes to solving social problems caused by economic and psychological burdens.

1 is a schematic diagram of an angle variable in a bed

2 is a front view showing a bed structure according to the first embodiment of the present invention

Figure 3 is a front view showing a state after the back angle and the leg angle in Figure 2 is adjusted

4a and 4b is a detailed view of the main portion showing the action of the bed of FIG.

Figure 4a is a state diagram before the back plate is erected

Figure 4b is a state diagram after the back stand

5 is a schematic view showing a kinematic structure of a bed according to a second embodiment of the present invention

6a and 6b are for explaining the operation of the bed according to the second embodiment of the present invention,

Figure 6a is a state diagram before the back stand

Figure 6b is a state diagram after the back stand

7 is a schematic view showing a kinematic structure of a bed according to a third embodiment of the present invention

8a and 8b are for explaining the operation of the bed according to the third embodiment of the present invention,

8A is a state diagram before the back is erected

Figure 8b is a state diagram after the back stand

* Explanation of symbols for the main parts of the drawings

1: back 2: hip

3: thigh plate 4: shin plate

A1: Link for back plate A2: Link for thigh plate

S1: Angle detection slider for back plate S2: Angle detection slider for thigh plate

M: Main frame G: Slider guide

L1: Back link L2: Thigh link

L / S: Limit switch D / S: Distance displacement sensor

Claims (9)

A mattress support plate comprising a back plate (1) and a thigh plate (3) rotatably installed in a segmented form on the main frame (M); A slider guide M2 provided below the main frame M to guide linear movement of the slider; A back angle detecting slider S1 and a thigh plate angle detecting slider S2 installed to move horizontally on the slider guide M2; A back connection link L1 and a thigh plate connection link L2 coupled to the back angle detection slider S1 and the thigh plate angle detection slider S2, respectively; A back link (A1) connecting between the back link (L1) and the back plate (1) and rotatably coupled around a point; A thigh plate link (A2) connecting between the thigh plate link link (L2) and the thigh plate (3) and rotatably coupled around the other one point; When defining an imaginary line connecting the upper end of the thigh plate 3 and the rotating portion of the bottom of the back plate 1 as a leg plate, the angle between the back plate 1 and the leg plate does not become smaller than a predetermined limit angle Bed comprising a control unit that can be controlled only by a straight line distance between the angle detection slider (S1) for thigh plate and the angle detection slider (S2) for thigh plate. The method of claim 1, The back connecting link (L1) and thigh plate connecting link (L2) is connected to the angle detection slider (S1) for thigh plate and the angle detection slider (S2) for thigh plate, respectively, and are connected in a cross shape, The control unit, A sensor capable of detecting contact between the back angle detecting slider S1 and the thigh plate angle detecting slider S2; And a controller configured to control the back plate driver and the thigh plate driver according to the contact detection signal between the two sliders of the sensor. The method of claim 1, The back connecting link (L1) and thigh plate connecting link (L2) are respectively connected to the angle detection slider (S1) and thigh plate angle detection slider (S2) for the back plate, but do not cross each other, The control unit, A sensor capable of detecting a gap between the back angle detecting slider S1 and the thigh plate angle detecting slider S2; And a controller configured to control the back driver and the thigh plate driver according to the distance between the two sliders detected from the sensor. The method according to claim 2 or 3, The sensor is a bed, characterized in that the limit switch (L / S) provided on at least one side of the angle detection slider (S1) for the back plate and the angle detection slider (S2) for thigh plate The method according to claim 2 or 3, The sensor is a distance displacement sensor (D / S) (linear potentiometer) capable of detecting the distance between the back angle detection slider (S1) and the thigh plate angle detection slider (S2) through a variable resistance value according to the distance displacement. Bed featured. The method according to claim 2 or 3, The sensor is a bed, characterized in that the ultrasonic sensor or an optical distance measuring sensor that can detect the distance between the angle detection slider (S1) for thigh plate and the angle detection slider (S2) for thigh plate. In the control method of the bed of any one of Claims 1-6, In the state where the leg plate angle β is at a predetermined angle, when the back plate 1 is raised in a state where the included angle γ, which is an angle between the back plate 1 and the leg plate, is greater than a predetermined limit angle, When the included angle γ reaches a predetermined limit angle before the climbing angle α, which is an angle formed between the climbing plate 1 and the horizontal plane, reaches the predetermined maximum climbing angle, the climbing board 1 is controlled by the controller. The thigh plate (3) is lowered instead of continuing to rise to an angle so that the included angle (γ) is not smaller than a predetermined limit angle. The method of claim 7, wherein When the back plate 1 is raised and the thigh plate 3 is lowered, When it is detected that the back angle α, which is an angle formed between the back plate 1 and the horizontal plane, reaches a predetermined maximum back angle, the upward action of the back plate 1 and the lowering action of the thigh plate 3 are stopped. Bed control method characterized in that. In the control method of the bed of any one of Claims 1-6, When the leg plate angle β is increased while the back plate angle α, which is an angle formed between the back plate 1 and the horizontal plane, is at a predetermined angle, Bed control method, characterized in that the leg plate angle (β) is no longer increased when the included angle (γ), the angle between the back plate (1) and the leg plate reaches a predetermined limit angle.

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