Electric bed

Abstract

The application provides an electric bed with a wheelchair capable of being combined with a bed body part in a first combined state or a second combined state, and the electric bed can realize electrical connection between the bed body part and the wheelchair in any state. The electric bed is provided with a bed body side electrical contact and a wheelchair side electrical contact on the bed body part and the wheelchair respectively, so that the bed body side electrical contact and the wheelchair side electrical contact can be electrically connected in any state of the first combined state and the second combined state. The first combined state is a state in which the wheelchair is combined with the bed body part in a preset positional relationship, and the second combined state is a state in which the wheelchair is combined with the bed body part in a different orientation from the first combined state.

Description

Technical Field

[0001] This invention relates to the technical field of nursing equipment, and more specifically to an electric bed. Background Technology

[0002] Electric beds are widely used for the movement (including horizontal movement and vertical movement of the person requiring care) and care of people who require care, such as the disabled, the elderly, or the injured (hereinafter referred to as "people requiring care"). Patent Document 1 discloses a detachable bed, which, by comprising a detachable bed body and a wheelchair, allows the person requiring care to be easily transferred from the bed body to the wheelchair.

[0003] Patent Document 1 discloses a separable bed in which both the main body and the wheelchair can be electrically driven to change positions. The main body is connected to an external power source, and the headboard, footboard, and height are adjusted using the power supplied from the external power source. On the other hand, the wheelchair is equipped with a battery, and its position, for example, is changed from a flat position to a seated position using the power supplied from the battery. Therefore, the wheelchair battery needs to be charged periodically. As one charging method, a method is disclosed where, when the main body and the wheelchair are combined, the wheelchair battery is charged using the external power source of the main body by contacting the contacts respectively provided on the main body and the wheelchair. In the disclosed technology, the orientation in which the wheelchair can be combined with the main body of the bed is fixed, so it is easy to set the positions of the contacts respectively provided therein and charge. However, in the development of a separable bed in which the wheelchair can be combined even when it is opposite to the conventional main body of the bed, it is possible that the contact positions may be misaligned, preventing charging, or that contacts that should not be in contact may come into contact with each other, causing hazards such as smoke or fire. There is a need to develop a technology to solve such problems.

[0004] Patent Document 1: CN110829515A Summary of the Invention

[0005] In view of the above-mentioned problems of the prior art, the present invention provides an electric bed with a wheelchair that can be joined and separated from the bed body in a first joined state or a second joined state. Electrical contacts on the bed body side and wheelchair side are respectively provided on the bed body and the wheelchair, so that the electrical contacts on the bed body side and the wheelchair side can be electrically connected in either the first joined state or the second joined state. The first joined state is when the wheelchair and the bed body are joined in a predetermined positional relationship, and the second joined state is when the wheelchair is joined to the bed body in an orientation different from the first joined state.

[0006] According to this technical solution, power can be supplied to the wheelchair via the bed body by utilizing the electrical contacts on the bed body side of the bed main unit and the electrical contacts on the wheelchair side of the wheelchair. Furthermore, when the wheelchair is assembled relative to the bed body, depending on the usage situation or scenario, it may sometimes be necessary to assemble the wheelchair to the bed body in the opposite direction to the usual orientation. Even in such cases, the electric bed of this technical solution can achieve mutual connection between the wheelchair side electrical contacts and the bed body side electrical contacts in both the first and second assembled states, thus ensuring electrical connection in either state. The operator can freely choose the orientation of the wheelchair assembled to the bed body according to the usage situation or scenario, thereby making it more convenient to use.

[0007] As a preferred technical solution, the bed body side electrical contacts include a bed body side first electrical contact and a bed body side second electrical contact disposed on one side of the bed body, and the wheelchair side electrical contacts include a wheelchair side first electrical contact and a wheelchair side second electrical contact disposed on one side of the wheelchair, and a wheelchair side third electrical contact and a wheelchair side fourth electrical contact disposed on the other side of the wheelchair in correspondence with the wheelchair side first electrical contact and the wheelchair side second electrical contact.

[0008] According to this technical solution, by setting a first electrical contact and a second electrical contact on one side of the wheelchair, and a third electrical contact and a fourth electrical contact on the other side of the wheelchair, it is possible to connect and merge either side of the wheelchair with the first electrical contact and the second electrical contact on the bed body of the bed body, thereby easily achieving electrical connection between the wheelchair and the bed body.

[0009] As a preferred technical solution, the wheelchair-side electrical contacts include a first wheelchair-side electrical contact and a second wheelchair-side electrical contact disposed on one side of the wheelchair, and the bed-body-side electrical contacts include a first bed-body-side electrical contact and a second bed-body-side electrical contact disposed on one side of the bed-body, and a third bed-body-side electrical contact and a fourth bed-body-side electrical contact disposed on the other side of the bed-body, corresponding to the first bed-body-side electrical contact and the second bed-body-side electrical contact.

[0010] According to this technical solution, by setting a first electrical contact and a second electrical contact on one side of the bed body, and a third electrical contact and a fourth electrical contact on the other side, the side of the wheelchair with the first and second electrical contacts can be made to contact and merge with either side of the bed body, thus easily achieving electrical connection between the wheelchair and the bed body.

[0011] Furthermore, since the purpose of using wheelchairs is to transport and move caregivers, wheelchairs sometimes collide with or come into contact with obstacles, or move outdoors, often facing more complex working environments. Therefore, wheelchair-side electrical contacts require more comprehensive protective structures and more frequent inspections and replacements. By setting bed-side electrical contacts on both sides of the bed body, it is beneficial to save on the protective structures for wheelchair-side electrical contacts and the workload of repairing or replacing such protective structures.

[0012] As a preferred technical solution, the electrical contacts on the bed body side located on the same side of the bed body and / or the electrical contacts on the wheelchair side located on the same side of the wheelchair are configured to be at least 30mm apart from each other.

[0013] According to this technical solution, the electrical contacts on the same side of the bed body and the electrical contacts on the same side of the wheelchair are spaced at least 30mm apart. This can reduce the risk of short circuits on the same side of the bed body or wheelchair due to external factors (leakage from the caregiver's excrement, soup, etc.) and improve the safety of the electric bed.

[0014] As a preferred technical solution, the electric bed provided by the present invention also includes a battery disposed in the main body of the bed or in the wheelchair, and the battery is electrically connected to an electrical contact on the side of the main body of the bed or to an electrical contact on the side of the wheelchair.

[0015] According to this technical solution, the battery can be charged when the electrical contacts on the bed body side and the wheelchair side are electrically connected, and discharged when the electrical connection between the bed body side and the wheelchair side is disconnected. Specifically, by installing a battery inside the wheelchair, when the bed body loses power due to a power outage or other reasons, power from the wheelchair's battery can be supplied to the bed body through the electrical connection between the bed body side and the wheelchair side electrical contacts. Similarly, by installing a battery inside the bed body, when the wheelchair's battery is low on power, power from the bed's battery can be supplied to the wheelchair through the electrical connection between the wheelchair and the bed body.

[0016] As a preferred technical solution, the electric bed provided by the present invention also includes a detection unit to detect whether the wheelchair and the bed body are in a first or second combined state. Only when the detection unit detects that the wheelchair and the bed body are combined, the electrical contacts on the wheelchair side and the electrical contacts on the bed body side that are in contact with each other in the combined state are energized.

[0017] According to this technical solution, the assembly of the wheelchair and the main body of the bed is tested. Therefore, the wheelchair-side electrical contacts and the main body electrical contacts are only energized when the wheelchair-side electrical contacts and the main body electrical contacts are in contact position. This reduces the risk of leakage and electric shock at the wheelchair-side electrical contacts or the main body electrical contacts of the electric bed, thus improving the safety of the electric bed.

[0018] As a preferred technical solution, the bed body is equipped with a measuring unit to measure the voltage applied to the electrical contacts on the wheelchair side and the electrical contacts on the bed body side. The electrical contacts on the bed body side and the electrical contacts on the wheelchair side are energized only when it is determined that the voltage applied to the electrical contacts on the bed body side and the electrical contacts on the wheelchair side as measured by the measuring unit is normal.

[0019] According to this technical solution, the measuring unit can detect the voltage in the electrical circuit during the charging process of the wheelchair by the bed body. The wheelchair is only charged when the voltage is normal, and the power supply to the electrical contacts on the bed body side or the wheelchair side is stopped when the voltage is abnormal, which can further ensure the safety of the wheelchair when the bed body charges it. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the combined structure of the main body of the electric bed and the wheelchair in an embodiment of the present invention.

[0021] Figure 2 This is a schematic diagram of the structure of the bed body and wheelchair in the separated state of the electric bed provided in the embodiment of the present invention;

[0022] Figure 3 This is a partial enlarged view of the bed body provided in an embodiment of the present invention;

[0023] Figure 4 This is a schematic diagram of the structure of the wheelchair of the electric bed provided in the embodiment of the present invention in a flat state;

[0024] Figure 5 This is a schematic diagram of the wheelchair of the electric bed provided in the embodiment of the present invention in the seated state;

[0025] Figure 6 This is a schematic diagram of the charging column of the wheelchair of the electric bed provided in an embodiment of the present invention;

[0026] Figure 7 This is a simplified structural diagram of the electric bed provided in the first assembled state according to this embodiment;

[0027] Figure 8 This is a simplified structural diagram of the electric bed provided in the second assembled state according to this embodiment.

[0028] Reference numerals: 101 - Bed body side electrical contact; 101a - Bed body side first electrical contact; 101b - Bed body side second electrical contact; 101c - Bed body side third electrical contact; 101d - Bed body side fourth electrical contact; 102 - Wheelchair side electrical contact; 102a - Wheelchair side first electrical contact; 102b - Wheelchair side second electrical contact; 102c - Wheelchair side third electrical contact; 102d - Wheelchair side fourth electrical contact; 1 - Wheelchair; 11 - Wheelchair body; 12 - Seat surface 121-Backrest; 122-Seating section; 123-Lower leg section; 124-Foot bottom; 13-Armrest; 131-Guide column; 14-Charging column; 141-Mounting structure; 142-Interlocking structure; 2-Bed main body; 21-Bed frame; 22-Bed bottom; 221-Bed main body backrest; 222-Bed main body seating section; 223-Bed main body lower leg section; 224-Bed main body foot bottom; 23-Wheel; 24-Recess; 241-Charging slot; 242-Waterproof plate; 243-Locking mechanism. Detailed Implementation

[0029] The following is a reference to the appendix. Figure 1 The preferred embodiments of the present invention will be described in detail below. Furthermore, the embodiments of the present invention are not limited to the following embodiments, and various embodiments within the scope of the inventive concept can be employed.

[0030] Furthermore, each figure is a schematic diagram and not necessarily a rigorous representation. Also, in each figure, substantially identical structures are given the same symbols, and repetitive explanations are omitted or simplified.

[0031] [Electric Bed Structure]

[0032] The structure of the electric bed provided by the present invention will be described below.

[0033] 1. Overall structure of the electric bed

[0034] first, Figure 1 This is a schematic diagram of the wheelchair 1 and bed body 2 in their combined state according to an embodiment of the present invention; Figure 2 This is a schematic diagram of the wheelchair 1 and the bed body 2 in a separated state according to an embodiment of the present invention.

[0035] like Figure 1 As shown, wheelchair 1 and bed body 2 combine to form a complete nursing bed; Figure 2 As shown, the wheelchair 1 can be separated from the bed body 2 from its side. Furthermore, the nursing bed formed by the combination of the wheelchair 1 and the bed body 2 can be an electric nursing bed used by people requiring care, such as in hospitals, nursing facilities, or ordinary homes.

[0036] like Figure 1 As shown, with the wheelchair 1 and the main bed 2 combined, the person requiring care, who is lying in the center of the nursing bed, is moved to one side of the wheelchair 1. Then, as... Figure 2 As shown, the wheelchair 1 is separated from the bed body 2, thereby making it easy to assist the person requiring care to transfer from the bed to the wheelchair 1.

[0037] 2. Structure of the main body of the bed

[0038] 2-1 Overall structure of the main body of the bed

[0039] Next, refer to Figure 1 as well as Figure 2 This describes the structure of the main body 2 of the bed. For example... Figure 1 as well as Figure 2 As shown, the bed body 2 includes a bed frame 21, a bed bottom 22, and an actuation mechanism (not shown).

[0040] The bed frame 21 can be formed from, for example, a metal tube, and is generally shaped as a rectangle that is longer in the X-axis direction. At the lower end of the bed frame 21, a plurality of wheels 23 are provided for moving the bed body 2. Furthermore, a recess 24 is formed on the side of the bed frame 21 for storing the wheelchair body 11 (described later) of the wheelchair 1.

[0041] The bed base 22 is set on the bed frame 21 to support the body of the person requiring care while lying horizontally. For example... Figure 2 As shown, the bed base 22 is located on the short side (Y-axis direction) of the bed frame 21. The bed base 22 has a bed body backrest 221, a bed body seat 222, a bed body lower leg 223, and a bed body foot bottom 224 that are connected to each other in a tilting (rotating) manner by hinges or links.

[0042] The bed's main body backrest 221 supports the head and back of the person requiring care. The bed's main body seat 222 supports the buttocks and thighs of the person requiring care. The bed's main body leg section 223 supports the lower legs of the person requiring care. The bed's main body footrest 224 supports the feet of the person requiring care. Furthermore, a flexible cushioning component (not shown) is installed on top of the bed's base 22.

[0043] The actuation mechanism is generally located on the lower side of the bed frame 21 and includes, for example, an actuator and a controller for controlling the actuator. The controller is used to control the actuator to perform extension or rotation movements according to the remote control signal sent from the remote controller. The actuator is hinged to the lower side of the bed bottom 22, driving the up and down movements of different parts of the bed bottom 22 or the lifting and lowering movements of the entire bed.

[0044] For example, the actuation mechanism can respond to a remote control command from the person requiring care, and position itself in a flat position at the bottom of the bed 22 (see reference). Figure 1 In this state, the backrest 221 of the main body of the bed is raised, or the connection between the seat 222 of the main body of the bed and the lower leg 123 is raised. Furthermore, the actuation mechanism can also return the nursing bed from the raised position of the bed base 22 to a flat position. The flat position is one in which the backrest 221, seat 222, lower leg 223, and foot 224 of the main body of the bed are approximately horizontal (i.e., parallel or approximately parallel to the horizontal direction (X-axis direction)), thus making the entire bed base 22 flat.

[0045] 2-2 Structure of the charging slot in the main body of the bed

[0046] Next, see Figure 3 The structure of the charging slot in the bed body provided in this embodiment will be explained. Figure 3 This is a partially enlarged view of the bed body 2 provided in an embodiment of the present invention.

[0047] like Figure 3 As shown, in the recess 24 of the bed body 2, a tapered charging groove 241 is formed on one or both sides of the bed frame 21 along the direction in which the wheelchair 1 and the bed body 2 are assembled (Y direction in the figure). The length of the groove opening (along the Y direction) of the charging groove 241 is greater than the length of the groove bottom (along the Y direction), thus forming a downwardly tapered shape, making it easier for the charging post 14 of the wheelchair 1 (described later) to enter the charging groove 241. The bottom of the charging groove 241 is provided with a bed body side electrical contact 101. Preferably, two bed body side electrical contacts 101 on the same side of the bed body 2 are provided. The two electrical contacts 101 on the same side of the bed body 2 are at least 30 mm apart (the length along the Y direction in the figure). By setting the two electrical contacts 101 on the same side of the bed body 2 far apart from each other, the risk of short circuits caused by external factors (leakage of excrement of the person being cared for, soup or other liquids from the person being cared for) can be reduced, thereby improving the safety of the electric bed.

[0048] In addition, a waterproof plate 242 extends outward from the upper edge of the bed frame 21 above the charging slot 241, which can further prevent liquid seeping into the bed bottom 22 from entering the charging slot 241; a locking mechanism 243 is also formed between the charging slot 241 and the waterproof plate 242. The locking mechanism 243 is formed as an L-shaped engaging member, wherein the short side of the locking mechanism 243 is rotatably connected to the bed frame 21, and the locking mechanism 243 can rotate in the YZ plane in the figure. When it rotates to a certain angle, it stops rotating and locks. Specifically, when the charging column 14 of the wheelchair 1 (described later) reaches the matching position in the charging slot 241, the locking mechanism 243 rotates inward in the L-shape. Figure 2 The locking mechanism 243 shown rotates clockwise along the YZ plane. When the long side of the locking mechanism 243 contacts the charging post 14 of the wheelchair 1, the locking mechanism 243 locks, thereby achieving a stable engagement between the wheelchair 1 and the bed body 2, preventing the wheelchair 1 from falling off when the electric bed moves.

[0049] 3. The structure of the wheelchair

[0050] 3-1. Overall structure of the wheelchair

[0051] Next, refer to Figures 1 to 5 This describes the overall structure of wheelchair 1. Figure 4 This is a schematic diagram of the structure of the electric wheelchair 1 provided in the embodiment of the present invention in a flat state. Figure 5 A schematic diagram of the structure of the electric wheelchair 1 provided in the embodiment of the present invention in the seated state. Furthermore, in Figure 5 The illustration of a pair of handrails 13 is omitted for the sake of clarity.

[0052] The wheelchair 1 provided in this embodiment of the invention is a wheelchair that allows a person requiring care to sit upright. This electric wheelchair 1 can be detached from the bed body 2, thereby functioning as a means of transportation for the person requiring care. Figures 2 to 5 As shown, the electric wheelchair 1 provided by the present invention includes a wheelchair body 11, a wheelchair seat 12 supported by the wheelchair body 11, and an actuation mechanism for changing the posture of the seat 12.

[0053] The wheelchair body 11 is formed of, for example, a metal tube and functions as the main frame of the wheelchair 1. At the lower end of the wheelchair body 11, a pair of front wheels and a pair of rear wheels (an example of wheel 23) are provided for moving the wheelchair 1. The pair of front wheels and the pair of rear wheels can be freewheeling wheels.

[0054] like Figure 4As shown, a pair of guide posts 131 extending in the vertical direction (Z-axis direction) are respectively installed on both sides of the wheelchair body 11. A pair of armrests 13 are respectively installed on each of the guide posts 131 in a vertically slidable manner. The pair of armrests 13 are respectively disposed on both sides of the seating portion 122. The pair of armrests 13 are respectively located in a storage position below the seating portion 122 (see reference). Figure 1 ), and the usage position located above the seating section 122 (see reference) Figure 2 Between the wheelchair 1 and the bed body 2, the armrests 13 slide vertically along a pair of guide posts 131. When the wheelchair 1 and the bed body 2 are combined, the pair of armrests 13 slide to the storage position. When the wheelchair 1 is separated from the bed body 2 for use, the pair of armrests 13 slide to the use position.

[0055] The seat 12 supports the body of the person requiring care while seated (or reclining) and is supported by the wheelchair body 11. The seat 12 includes a backrest 121, a seat portion 122, lower legs 123, and footrests 124, all connected to each other by hinges or the like in a tilting (rotating) manner. The backrest 121 supports the head and back of the person requiring care; the seat portion 122 supports the buttocks and thighs; the lower legs 123 support the calves; and the footrests 124 support the feet. Furthermore, a flexible cushioning component (not shown) is installed on the seat 12. The backrest 121, seat portion 122, lower legs 123, and footrests 124 are driven by an actuation mechanism to change their posture. This actuation mechanism can be any structure such as a hinge or linkage, and is not limited here. For example, the seat 12 can be in a flat position (see [reference]). Figure 4 ) and sitting posture (refer to Figure 5 The posture varies between the following: a flat posture is a posture in which the backrest 121, seat 122, lower legs 123 and foot soles 124 are approximately horizontal, thereby making the entire seat 12 of the wheelchair 1 flat; a seated posture is a posture in which the backrest 121, seat 122, lower legs 123 and foot soles 124 are tilted or rotated relative to the horizontal direction.

[0056] like Figure 1As shown, when the wheelchair 1 and the bed body 2 are combined, with the seat 12 of the wheelchair 1 and the bed base 22 of the bed body 2 in a flat position, the wheelchair 1 is brought close to the bed body 2, and the wheelchair body 11 is installed into the recess 24 of the bed frame 21. At this time, the seat 12 is located on the half side of the bed frame 21 in the short side direction. Accordingly, the backrest 121, seat 122, lower leg 123, and foot 124 of the wheelchair 1 are respectively arranged adjacent to the backrest 221, seat 222, lower leg 223, and foot 224 of the bed body in the short side direction of the nursing bed. Moreover, in the combined state of the wheelchair 1 and the bed body 2, the seat 12 of the wheelchair 1 is controlled by an actuation mechanism on the bed side or the wheelchair side to work together with the bed base 22 of the bed body 2. There is no particular limitation as long as the actuation mechanism can control the wheelchair 1 and the bed body 2 to work together.

[0057] On the other hand, such as Figure 2 As shown, when separating the wheelchair 1 from the bed body 2, firstly, the wheelchair body 11 is removed from the recess 24 of the bed frame 21 of the bed body 2. Then, with the person requiring care lying on the seat 12, the posture of the seat 12 is changed from a flat posture to a seated posture.

[0058] 3-2. Structure of wheelchair charging station

[0059] Next, see Figure 6 This section explains the structure of the charging column for the wheelchair 1 provided in this embodiment. Figure 6 This is a schematic diagram of the charging column for a wheelchair provided in an embodiment of the present invention.

[0060] like Figure 6 As shown, the side of the wheelchair body 11 of wheelchair 1 has two protruding charging posts 14. Figure 6 The example shown is that the charging post 14 is on the head side of the wheelchair 1. Other cases, such as two charging posts 14 being provided on the foot side of the wheelchair 1, or two charging posts 14 being provided on both the head side and the foot side of the wheelchair 1, are also applicable to the present invention.

[0061] The charging column 14 is preferably made of insulating material to avoid affecting the electrical components (wires, wheelchair-side electrical contacts 102) on the surface and inside of the charging column. The upper half of the charging column 14 is a mounting structure 141, and the lower half is a locking structure 142. The mounting structure 141 is a hollow structure with cylindrical slots for fixed installation with the metal tubular components of the wheelchair 1. The locking structure 142 is formed into a convex tapered structure that is wider at the top and narrower at the bottom. In particular, the wheelchair-side electrical contacts 102 are located at the bottom of the locking structure 142, so that when the wheelchair 1 is locked with the bed body 2, the wheelchair-side electrical contacts 102 of the wheelchair 1 can contact the bed body-side electrical contacts 101 of the bed body 2, realizing electrical communication between the wheelchair 1 and the bed body 2.

[0062] Preferably, the two charging posts 14 on the same side of the wheelchair 1 are at least 30mm apart (the length along the Y direction). That is, the two wheelchair-side electrical contacts 102 (the first wheelchair-side electrical contact 102a and the second wheelchair-side electrical contact 102b, or the third wheelchair-side electrical contact 102c and the fourth wheelchair-side electrical contact 102d) on the same side of the wheelchair 1 are configured to be at least 30mm apart. By configuring the two wheelchair-side electrical contacts 102 on the same side of the wheelchair in a way that keeps them away from each other, the risk of short circuits caused by external factors (leakage of excrement from the person being cared for, soup or liquid from the person's diet) can be reduced, thereby improving the safety of the electric bed.

[0063] How to use an electric bed while it's charging

[0064] The following describes the cooperation structure and power supply method of the wheelchair-side electrical contact 102 of the wheelchair 1 and the bed-side electrical contact 101 of the bed body, in conjunction with the structure of the electric bed described above.

[0065] Figure 7 and Figure 8 The two states of wheelchair 1 and bed body 2 combined are shown respectively. Figure 7 This is a simplified structural diagram of the wheelchair 1 and bed body 2 in their first combined state, as provided in this embodiment.

[0066] Figure 8 This is a simplified structural diagram of the wheelchair 1 and bed body 2 provided in this embodiment in the second combined state.

[0067] like Figure 7 and Figure 8As shown, in this embodiment, the first combined state is when side A of the wheelchair 1 is combined with side C of the bed body 2, and side B is combined with side D of the bed body 2. At this time, the wheelchair and the bed body 2 are combined in a preset positional relationship. Generally, the preset positional relationship refers to the wheelchair's head side (side A) corresponding to the head side (side C) of the bed body 2, and the wheelchair's foot side (side B) corresponding to the foot side (side D) of the bed body 2. Furthermore, when the wheelchair 1 and the bed body 2 are combined in a positional relationship different from the preset relationship, it is the second combined state, for example... Figure 8 The wheelchair 1 shown is in its second combined state when side A is combined with side D of the bed body 2 and side B is combined with side C of the bed body 2.

[0068] In one embodiment, a first electrical contact 101a and a second electrical contact 101b on the bed body side are provided on the C side or D side of the recess 24 of the bed body 2, a first electrical contact 102a and a second electrical contact 102b on the wheelchair side are provided on the A side of the wheelchair 1, and a third electrical contact 102c and a fourth electrical contact 102d on the wheelchair side are provided on the B side of the wheelchair 1.

[0069] Specifically, two wheelchair-side electrical contacts 102 are respectively provided on sides A and B of wheelchair 1, and two bed-side electrical contacts 101 are provided on side C or D of bed body 2. In this embodiment, taking the provision of two bed-side electrical contacts 101 on side C of the recess 24 of bed body 2 as an example, such as... Figure 7 As shown, when the wheelchair 1 and the bed body 2 are combined in the first assembled state, the wheelchair-side first electrical contact 102a and the wheelchair-side second electrical contact 102b on side A of the wheelchair 1 contact the bed-side first electrical contact 101a and the bed-side second electrical contact 101b on side C of the bed body 2, respectively, and the wheelchair 1 is electrically connected to the bed body 2; as Figure 8 As shown, when the wheelchair 1 and the bed body 2 are combined in the second combined state, the wheelchair-side third electrical contact 102c and the wheelchair-side fourth electrical contact 102d on the B side of the wheelchair 1 contact the bed body-side first electrical contact 101a and the bed body-side second electrical contact 101b on the C side of the bed body 2, respectively, and the wheelchair 1 and the bed body 2 are electrically connected.

[0070] In this embodiment, firstly, Figure 7 and Figure 8The example illustrates a case where two bed-body side electrical contacts 101 on the same side of the bed body 2 and two wheelchair-side electrical contacts 102 on the same side of the wheelchair 1 are arranged along the short side direction (Y direction in the figure) of the electric bed. However, the present invention is not limited to this. The case where two bed-body side electrical contacts 101 on the same side of the bed body 2 and two wheelchair-side electrical contacts 102 on the same side of the wheelchair 1 are arranged along the long side direction (X direction in the figure) of the electric bed is also applicable to the present invention. In this case, arranging two bed-body side electrical contacts 101 on the same side of the bed body 2 and two wheelchair-side electrical contacts 102 on the same side of the wheelchair 1 along the short side direction (Y direction in the figure), that is, arranging them on the short side of the head and legs of the wheelchair 1, can effectively avoid the excretory parts of the person being cared for, and reduce the risk of short circuit caused by the excrement of the person being cared for seeping into the electrical connection structure between the wheelchair 1 and the bed body 2.

[0071] Secondly, by providing a first electrical contact 102a and a second electrical contact 102b on one side of the wheelchair, and a third electrical contact 102c and a fourth electrical contact 102d on the other side of the wheelchair, electrical communication between the wheelchair 1 and the bed body 2 can be achieved when either side of the wheelchair 1 comes into contact with the first electrical contact 101a and the second electrical contact 101b on the bed body 2.

[0072] As a variation, a first electrical contact 102a and a second electrical contact 102b on the wheelchair side are provided on the A or B side of the wheelchair 1, a first electrical contact 101a and a second electrical contact 101b on the bed body side are provided on the C side of the recess 24 of the bed body 2, and a third electrical contact 101c and a fourth electrical contact 101d on the bed body side are provided on the D side of the recess 24 of the bed body 2.

[0073] Specifically, two bed-side electrical contacts 101 are respectively provided on sides C and D of the bed body 2, and two wheelchair-side electrical contacts 102 are provided on side A or side B of the wheelchair 1. In this embodiment, two wheelchair-side electrical contacts 102 are provided on side A of the wheelchair 1 as an example. Figure 7 As shown, when the wheelchair 1 and the bed body 2 are combined in the first combined state, the wheelchair-side first electrical contact 102a and second electrical contact 102b on side A of the wheelchair 1 make corresponding contact with the bed-side first electrical contact 101a and second electrical contact 101b on side C of the bed body 2, respectively, and the wheelchair 1 and the bed body 2 are electrically connected; Figure 8As shown, when the wheelchair 1 and the bed body 2 are combined in the second combined state, the wheelchair-side third electrical contact 102c and fourth electrical contact 102d on the B side of the wheelchair 1 make corresponding contact with the bed body-side first electrical contact 101a and second electrical contact 101b on the C side of the bed body 2, and the wheelchair 1 and the bed body 2 are electrically connected.

[0074] In this embodiment, by providing a first electrical contact 101a and a second electrical contact 101b on one side of the bed body 2, and a third electrical contact 101c and a fourth electrical contact 101d on the other side, an electrical connection between the wheelchair 1 and the bed body 2 can be achieved when the side of the wheelchair 1 with the first electrical contact 102a and the second electrical contact 102b is in contact with either side of the bed body 2. Charging of the wheelchair 1 can be performed automatically via the connected circuit, or it can be performed when specific conditions are met.

[0075] Furthermore, since the purpose of using a wheelchair is to transport and move caregivers, wheelchairs sometimes collide with or come into contact with obstacles, or move outdoors, often facing more complex working environments. Therefore, the wheelchair-side electrical contacts 102 on wheelchair 1 require a more comprehensive protective structure and more frequent inspection and replacement. Thus, by setting bed-side electrical contacts 101 on both sides of the bed body 2, it is beneficial to save on the protective structure for protecting the wheelchair-side electrical contacts 102 on wheelchair 1, as well as the costs of maintenance and replacement.

[0076] Preferably, the electric bed provided in this embodiment also includes a battery (not shown) disposed in the bed body 2 or in the wheelchair 1, and the battery is electrically connected to the electrical contact 101 on the bed body side or to the electrical contact 102 on the wheelchair side.

[0077] In this embodiment, the battery can be charged when the electrical contact 101 on the bed body side and the electrical contact 102 on the wheelchair side are electrically connected, and discharged when the electrical connection between the electrical contact 101 on the bed body side and the electrical contact 102 on the wheelchair side is disconnected. Specifically, by placing the battery inside the wheelchair 1, in the event that the bed body 2 loses power supply due to a power outage or other reasons, power from the wheelchair's battery can be supplied to the bed body 2 through the electrical connection between the electrical contact 101 on the bed body side and the electrical contact 102 on the wheelchair side. Similarly, by placing the battery inside the bed body 2, in the event that the wheelchair's battery has insufficient charge, power from the bed's battery can be supplied to the wheelchair 1 through the electrical connection between the wheelchair 1 and the bed body 2.

[0078] Preferably, the electric bed provided in this embodiment also includes a detection unit (not shown) to detect whether the wheelchair 1 and the bed body 2 are in a first or second combined state. Only when the detection unit detects that they are combined, the wheelchair-side electrical contact 102 and the bed body-side electrical contact 101 that are in contact with each other in the combined state are energized.

[0079] Specifically, the detection unit can be an infrared detector that determines the engagement status of the wheelchair 1 and the bed body 2 by detecting the distance between them. When the wheelchair 1 and the bed body 2 are detected to be in contact in a first or second engagement state, the wheelchair-side electrical contact 102 and the bed body-side electrical contact 101 are energized. When no contact is detected between the wheelchair 1 and the bed body 2, or when the contact position is not the specified position in the first or second engagement state, the power supply to the bed body 2 and the electrical contact 101 on the bed body side are cut off. Alternatively, the detection unit can also be installed on the bed body... The pressure button inside the charging slot 241 of the bed body allows the charging post 14 of the wheelchair 1 to enter the charging slot 241 of the bed body 2 when the wheelchair 1 is correctly installed and combined with the bed body 2 (in either the first or second combined state). This presses the button, connecting the charging circuit of the bed body 2 and supplying power (not shown) to the bed body-side electrical contact 101. When the wheelchair 1 is separated from the bed body 2, the pressure button pops up, disconnecting the charging circuit of the bed body 2 and stopping power supply to the bed body-side electrical contact 101 and the wheelchair-side electrical contact 102, further ensuring safety when the bed body 2 is electrically connected to the wheelchair 1. Alternatively, this detection unit can be a detection circuit capable of detecting the circuit connection signal when the bed body 22 and the wheelchair 1's electrical contact 100 are interconnected.

[0080] Preferably, the bed body 2 provided in this embodiment also includes a measuring unit (not shown) that can measure the voltage applied to the electrical contacts 101 on the bed body side and 102 on the wheelchair side during the electrical connection between the bed body and the wheelchair 1. Power is supplied to the electrical contacts 101 on the bed body side and 102 on the wheelchair side only when the voltage measured by the measuring unit is normal. This measuring unit can detect the voltage in the charging circuit during the electrical connection between the bed body 2 and the wheelchair 1, charging the wheelchair 1 only when the voltage is normal, and stopping power supply to the electrical contacts 101 on the bed body side and 102 on the wheelchair side when the voltage is abnormal, thus further ensuring the safety of the bed body 2 when charging the wheelchair 1. The specific configuration of this measuring unit is not particularly limited, as long as it can achieve voltage measurement; it can be a common configuration such as a voltage detection circuit installed in the control circuit.

[0081] Preferably, the electric bed also includes a connecting part (not shown). In embodiments of the present invention, the wheelchair 1 and the bed body 2 can usually be directly connected. The bed body-side electrical contact 101 and the wheelchair-side electrical contact 102, which are respectively provided on the bed body 2 and the wheelchair 1, can be directly connected through the contact between the wheelchair 1 and the bed body 2. However, in some special cases, such as when the wheelchair 1 and the bed body 2 are separated, the wheelchair 1 has no external power supply, and the wheelchair 1 is in a non-flat position, and the bed body 2 and the wheelchair 1 cannot be directly spliced ​​and installed, the bed body 2 and the wheelchair 1 can be electrically connected through the connecting part of the wire structure, so that the bed body 2 can supply power to the wheelchair 1, so that the wheelchair 1 can return to a flat position, and then the splicing and installation of the wheelchair 1 and the bed body 2 can be completed.

[0082] The electric bed in this embodiment has at least the following beneficial effects:

[0083] First, the electric bed provided in this embodiment can achieve electrical connection between the wheelchair 1 and the bed body 2 in both the first and second combined states, thereby enabling automatic charging of the wheelchair 1 after combination.

[0084] Secondly, by configuring the two wheelchair-side electrical contacts 102 on the same side of the wheelchair 1 and the two bed-body-side electrical contacts 101 on the same side of the recess 24 of the bed body 2 to be at least 30mm apart, the risk of short circuits caused by external factors (leakage of excrement of the person being cared for, soup or other liquids from the person being cared for) can be further reduced, thereby improving the safety of the electric bed.

[0085] Finally, by providing a waterproof plate 242, a locking structure 142, a detector, and a measuring unit at the engagement point between the bed body 2 and the wheelchair 1, the safety of the bed body 2 and the wheelchair 1 during combined charging can be further guaranteed, and the reliability of the combined structure of the bed body 2 and the wheelchair 1 can be increased.

[0086] The present invention has been described above with reference to the embodiments; however, the present invention is not limited to the embodiments.

[0087] For example, the embodiments illustrate the use of wheelchair 1 in conjunction with a bed; however, it is not limited to this and can also be used in conjunction with other nursing devices and beds.

[0088] Furthermore, the embodiments describe the case where the wheelchair 1 and the bed body 2 are joined along the short side direction (Y direction in the figure) of the electric bed, but the present invention is not limited thereto. The case where the wheelchair 1 and the bed body 2 are joined along the long side direction (X direction in the figure) of the electric bed is also applicable to the present invention.

[0089] The technical solutions of the present invention have been described in conjunction with the accompanying drawings. However, it will be readily understood by those skilled in the art that the scope of protection of the present invention is obviously not limited to these specific embodiments. Without departing from the principles of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions resulting from such changes or substitutions will all fall within the scope of protection of the present invention.

Claims

1. An electric bed comprising a bed body and a wheelchair capable of being engaged with and detached from the bed body in a first engaged state or a second engaged state, characterized in that, Electrical contacts on the bed body and wheelchair are respectively provided on the bed body and wheelchair side, so that the bed body and wheelchair can be joined or separated in either the first joined state or the second joined state. The bed body side electrical contacts and wheelchair side electrical contacts can be electrically connected. The first joined state is when the wheelchair and the bed body are joined in a predetermined positional relationship. The second joined state is when the wheelchair is joined to the bed body in an orientation different from the first joined state.

2. The electric bed as described in claim 1, characterized in that, The bed body side electrical contacts include a first bed body side electrical contact and a second bed body side electrical contact disposed on one side of the bed body. The wheelchair side electrical contacts include a first wheelchair side electrical contact and a second wheelchair side electrical contact disposed on one side of the wheelchair, and a third wheelchair side electrical contact and a fourth wheelchair side electrical contact disposed on the other side of the wheelchair in correspondence with the first wheelchair side electrical contact and the second wheelchair side electrical contact.

3. The electric bed as described in claim 1, characterized in that, The wheelchair-side electrical contacts include a first wheelchair-side electrical contact and a second wheelchair-side electrical contact disposed on one side of the wheelchair. The bed-body-side electrical contacts include a first bed-body-side electrical contact and a second bed-body-side electrical contact disposed on one side of the bed-body, and a third bed-body-side electrical contact and a fourth bed-body-side electrical contact disposed on the other side of the bed-body, corresponding to the first bed-body-side electrical contact and the second bed-body-side electrical contact.

4. The electric bed as described in claim 2 or 3, characterized in that, The electrical contacts on the bed body side, located on the same side of the bed body, and / or the electrical contacts on the wheelchair side, located on the same side of the wheelchair, are configured to be at least 30 mm apart from each other.

5. The electric bed as described in claim 4, characterized in that, It also includes a battery disposed on the bed body or disposed on the wheelchair, the battery being electrically connected to an electrical contact on the bed body side or to an electrical contact on the wheelchair side.

6. The electric bed according to any one of claims 1-3, characterized in that, It also includes a detection unit to detect whether the wheelchair and the bed body are in the first or second combined state. Only when the detection unit detects that the wheelchair and the bed body are combined, the wheelchair-side electrical contacts and the bed body-side electrical contacts that are in contact with each other in the combined state are energized.

7. The electric bed as described in claim 6, characterized in that, The bed body also includes a measuring unit that measures the voltage applied to the wheelchair-side electrical contacts and the bed body-side electrical contacts. The wheelchair-side electrical contacts and the bed body-side electrical contacts are energized only if the voltage measured by the measuring unit is normal.

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