Walking mechanism and electric sickbed with same

Abstract

The invention provides a walking mechanism and an electric sickbed with the same. The walking mechanism comprises a frame and a walking mechanism, the rolling wheel is rotatably arranged on the frame, the rolling wheel has a free state and a braking state, and a first triggering piece is arranged on the rolling wheel; the brake part is movably arranged on the frame, the brake part can be matched with the roller and is provided with a locking position and an unlocking position, when the brake part is located at the locking position, the roller is in a braking state, when the brake part is switched to the unlocking position, the roller is switched to a free state, and a second trigger part is arranged on the brake part; the detection piece is arranged on the frame; when the idler wheel is in a free state and rolls, the first trigger piece can trigger the detection piece to enable the detection piece to generate potential difference, and when the brake piece is switched between the locking position and the unlocking position, the second trigger piece can trigger the detection piece to enable the detection piece to generate potential difference. Through the technical scheme provided by the invention, the problem of high layout difficulty of an electric sickbed in related technologies can be solved.

Description

Technical Field

[0001] The present invention relates to the technical field of electric hospital beds, and in particular to a walking mechanism and an electric hospital bed having the same. Background Art

[0002] Electric beds are commonly used medical devices for patients or elderly people with limited mobility to recuperate and facilitate transfer. Electric beds can switch between various postures such as lying and sitting to meet different usage scenarios. At the same time, electric wheels for assisting walking are set at the center of the electric bed to reduce the difficulty of pushing the bed.

[0003] In the related art, a sensor is provided on the electric bed to detect the running state of the running wheels of the electric bed and transmit the detection signal to the controller to control the electric wheels. For example, a micro switch is used to detect the braking state of the running wheels, and a Hall sensor is used to detect the running state of the running wheels.

[0004] However, the above detection solution uses multiple sensors for detection, which increases the difficulty of wiring. Summary of the invention

[0005] The present invention provides a walking mechanism and an electric hospital bed having the same, so as to solve the problem of high difficulty in layout of the electric hospital bed in the related art.

[0006] According to one aspect of the present invention, a walking mechanism is provided, which includes: a frame; a roller rotatably arranged on the frame, the roller has a free state and a brake state, and a first trigger member is arranged on the roller; a brake member movably arranged on the frame, the brake member can cooperate with the roller and has a locking position and an unlocking position, when the brake member is in the locking position, the roller is in the braking state, and when the brake member switches to the unlocking position, the roller switches to the free state, and a second trigger member is arranged on the brake member; a detection member is arranged on the frame; wherein, when the roller is in the free state and rolls, the first trigger member can trigger the detection member to generate a potential difference in the detection member, and when the brake member switches between the locking position and the unlocking position, the second trigger member can trigger the detection member to generate a potential difference in the detection member.

[0007] Furthermore, the detection member has an induction coil structure, and the induction coil structure is correspondingly arranged at the first trigger member and / or the second trigger member. The induction coil structure includes an induction coil, a magnet and a reset member. The magnet is movably arranged in the induction coil. The first trigger member and / or the second trigger member can press against the magnet to drive the magnet to move. The reset member can provide a restoring force for the magnet to return the magnet to its initial position.

[0008] Furthermore, the induction coil structure also includes a connecting member, a first end of the connecting member is connected to the magnet, a second end of the connecting member extends to the outside of the induction coil, and the first trigger member can abut against the second end of the connecting member.

[0009] Further, when the induction coil structure is set in the detection part corresponding to the first trigger part, the connecting part includes a push rod and a connecting rod, the connecting rod is connected between the push rod and the magnet, the push rod includes a first rod segment and a second rod segment, the connecting rod is connected at the connection between the first rod segment and the second rod segment, the lengths of the first rod segment and the second rod segment are different, and the moving axis of the connecting rod is coplanar with the rotation axis of the roller.

[0010] Furthermore, the first triggering member is a first cam, and the axis of the first cam is colinear with the rotation axis of the roller.

[0011] Furthermore, the reset member includes a reset spring sleeved on the magnet.

[0012] Furthermore, when the detection member is provided with an induction coil structure corresponding to the second trigger member, the brake member includes a brake pedal swingably arranged on the frame, the brake pedal can cooperate with the roller, and the second trigger member includes a second cam, and the rotation axis of the second cam coincides with the rotation axis of the brake pedal.

[0013] Furthermore, the detection component also includes a full-bridge rectifier circuit, and the induction coil is connected to the full-bridge rectifier circuit.

[0014] According to another aspect of the present invention, an electric hospital bed is provided, comprising: a bed body; a walking mechanism located below the bed body, a frame of the walking mechanism being connected to the bed body, and the walking mechanism being the walking mechanism provided above.

[0015] Furthermore, a controller is provided on the bed body, and the electric bed also includes a wireless module, a transmitting end of the wireless module is connected to the detection part signal of the walking mechanism, a receiving end of the wireless module is connected to the controller signal, and the walking mechanism also includes an electric wheel arranged on the frame, and the controller is connected to the electric wheel signal.

[0016] According to the technical solution of the present invention, the walking mechanism includes a frame, a roller, a brake member and a detection member. By making the brake member move relative to the frame, the brake member can be switched between a locked position and an unlocked position. When the brake member moves, it can drive the second trigger member to move. The second trigger member can trigger the detection member, thereby causing the detection member to generate a potential difference to determine the position of the brake member. When the brake member is in the unlocked position, the roller can be switched to a free state, and when the roller rolls, it can drive the first trigger member disposed on the roller to move. The first trigger member can trigger the detection member, thereby causing the detection member to generate a potential difference to determine the motion state of the roller. Compared with the solution of using multiple sensors for detection in the related art, the walking mechanism can detect the brake state and the roller state through only one detection member, thereby reducing the difficulty of wiring. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The drawings constituting a part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0018] Figure 1 It shows a structural schematic diagram of a walking mechanism provided in an embodiment of the present invention;

[0019] Figure 2 A partial schematic diagram of a walking mechanism provided according to an embodiment of the present invention is shown;

[0020] Figure 3 It shows a schematic structural diagram of a connecting member of a walking mechanism provided in an embodiment of the present invention;

[0021] Figure 4 A schematic structural diagram of an induction coil structure of a walking mechanism provided in an embodiment of the present invention is shown;

[0022] Figure 5 Another partial schematic diagram of a walking mechanism provided according to an embodiment of the present invention is shown;

[0023] Figure 6 Another partial schematic diagram of the walking mechanism provided according to an embodiment of the present invention is shown;

[0024] Figure 7 The circuit diagram of the full-bridge rectifier circuit of the detection component of the walking mechanism provided according to the embodiment of the present invention is shown.

[0025] The above drawings include the following reference numerals:

[0026] 10. Framework;

[0027] 20. Roller; 21. First trigger member;

[0028] 30. Braking member; 31. Second trigger member;

[0029] 40. Detection component; 41. Induction coil structure; 411. Induction coil; 412. Magnet; 413. Reset component; 414. Connecting component; 415. Push rod; 416. Connecting rod; 417. First rod section; 418. Second rod section; 42. Energy storage component; 43. Power resistor; 44. First branch; 45. Second branch; 46. Third branch; 47. Fourth branch. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is by no means intended to limit the present invention and its application or use. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0031] like Figures 1 to 7 As shown, an embodiment of the present invention provides a walking mechanism, which includes a frame 10, a roller 20, a brake member 30, and a detection member 40. The roller 20 is rotatably arranged on the frame 10, and the roller 20 has a free state and a brake state. A first trigger member 21 is arranged on the roller 20; the brake member 30 is movably arranged on the frame 10, and the brake member 30 can cooperate with the roller 20 and has a locking position and an unlocking position. When the brake member 30 is in the locking position, the roller 20 is in the braking state. When the brake member 30 switches to the unlocking position, the roller 20 switches to the free state. A second trigger member 31 is arranged on the brake member 30; the detection member 40 is arranged on the frame 10; wherein, when the roller 20 is in the free state and rolling, the first trigger member 21 can trigger the detection member 40 so that the detection member 40 generates a potential difference, and when the brake member 30 switches between the locking position and the unlocking position, the second trigger member 31 can trigger the detection member 40 so that the detection member 40 generates a potential difference.

[0032] According to the technical solution of the present invention, the walking mechanism includes a frame 10, a roller 20, a brake member 30 and a detection member 40. By making the brake member 30 move relative to the frame 10, the brake member 30 can be switched between a locked position and an unlocked position. When the brake member 30 moves, it can drive the second trigger member 31 to move. The second trigger member 31 can trigger the detection member 40, and then the detection member 40 generates a potential difference to determine the position of the brake member 30. When the brake member 30 is in the unlocked position, the roller 20 can be switched to a free state. When the roller 20 rolls, it can drive the first trigger member 21 disposed on the roller 20 to move. The first trigger member 21 can trigger the detection member 40, and the detection member 40 generates a potential difference to determine the motion state of the roller 20. Compared with the solution of using multiple sensors for detection in the related art, the walking mechanism can detect the brake state and the roller 20 state only by one detection member 40, which reduces the wiring difficulty.

[0033] The detection member 40 can generate a potential difference through the piezoelectric effect, or can generate a voltage signal by providing a movable magnet to cut the magnetic flux lines of the induction coil.

[0034] In this embodiment, the roller 20 is arranged below the frame, the brake member 30 is arranged on the frame 10 and is located above the roller 20, the detection member 40 is arranged between the roller 20 and the brake member 30, the first trigger member 21 is located below the detection member 40, and the second trigger member 31 is located above the detection member 40.

[0035] like Figure 1 , Figure 2 as well as Figure 5 As shown, the detection member 40 has an induction coil structure 41, the first trigger member 21 and / or the second trigger member 31 are arranged corresponding to the induction coil structure 41, the induction coil structure 41 includes an induction coil 411, a magnet 412 and a reset member 413, the magnet 412 is movably arranged in the induction coil 411, the first trigger member 21 or the second trigger member 31 can push against the magnet 412 to drive the magnet 412 to move, and the reset member 413 can provide a restoring force for the magnet 412 to return the magnet 412 to its initial position. With the above-mentioned detection member 40, when the first trigger member 21 or the second trigger member 31 moves, it can push against the magnet 412 to move the magnet 412 in the induction coil 411, and the magnet 412 can cut the magnetic flux lines of the induction coil 411, thereby generating an induced current and a potential difference, which can be converted into an induction signal and judge the state of the brake member 30 and the roller 20.

[0036] Among them, one of the first triggering member 21 and the second triggering member 31 can generate a potential difference through piezoelectric effect, and the other can generate a potential difference through electromagnetic induction. Alternatively, the first triggering member 21 and the second triggering member 31 can both generate a potential difference through electromagnetic induction.

[0037] In this embodiment, since the magnet 412 can generate a potential difference as long as it moves in the induction coil 411, when the first trigger member 21 or the second trigger member 31 drives the magnet 412 to move, a positive potential difference is generated. Then, when the reset member 413 drives the magnet 412 to move, a reverse potential difference is generated.

[0038] like Figure 5 and Figure 6 As shown, when the brake member 30 moves and switches from the locked position to the unlocked position, the second trigger member 31 drives the magnet 412 to move, which can generate a positive potential difference. When the brake member 30 switches from the unlocked position to the locked position, the reset member 413 can drive the magnet 412 to return to the initial position, which can generate a reverse potential difference. Due to the different directions of the potential difference, different signals can be generated to determine the position of the brake member 30.

[0039] Specifically, when the roller 20 rotates, the roller can drive the first trigger member 21 to move, and drive the magnet 412 to move, generating a positive potential difference. In addition, by analyzing the cycle of the potential difference, the rotation speed of the roller 20 can be calculated.

[0040] It should be noted that the magnet 412 can be made of magnetic materials such as iron, cobalt, and nickel.

[0041] The first triggering member 21 and / or the second triggering member 31 are arranged corresponding to the induction coil structure 41 , which means that the first triggering member 21 and the second triggering member 31 can drive the corresponding magnet 412 to move.

[0042] like Figure 4 As shown, the induction coil structure 41 further includes a connector 414, a first end of the connector 414 is connected to the magnet 412, a second end of the connector 414 extends to the outside of the induction coil 411, and the first trigger member 21 can abut against the second end of the connector 414. The connector 414 can reduce the volume of the magnet 412 and cooperate with the first trigger member 21, which has the advantages of simple structure and low cost.

[0043] like Figure 2 and Figure 3As shown, when the detection member 40 is provided with the induction coil structure 41 corresponding to the first trigger member 21, the connecting member 414 includes a push rod 415 and a connecting rod 416, the connecting rod 416 is connected between the push rod 415 and the magnet 412, the push rod 415 includes a first rod segment 417 and a second rod segment 418, the connecting rod 416 is connected at the connection of the first rod segment 417 and the second rod segment 418, the first rod segment 417 and the second rod segment 418 have different lengths, and the moving axis of the connecting rod 416 is arranged coplanar with the rotation axis of the roller 20. With the above arrangement, due to the different lengths of the first rod segment 417 and the second rod segment 418, the movement time of the first trigger member 21 triggering the push rod 415 is not the same during the clockwise and counterclockwise rotation of the roller 20, and the rotation direction of the roller 20 can be judged by the contact time.

[0044] Specifically, in the forward direction of the roller 20, the first rod segment 417 is located at the rear side of the second rod segment 418, and the length of the first rod segment 417 is greater than the length of the second rod segment 418. When the roller 20 rotates clockwise, the rising time of the abutting rod 415 is greater than its falling time. When the roller 20 rotates counterclockwise, the rising time of the abutting rod 415 is less than its falling time.

[0045] In this embodiment, since the first trigger member 21 is disposed on the roller 20, the rotation axis of the first trigger member 21 coincides with the rotation axis of the roller 20. The first trigger member 21 can rotate or revolve. When the first trigger member 21 is a protrusion disposed on the roller 20, the protrusion revolves with the roller 20. When the first trigger member 21 is a cam, the cam rotates with the roller 20.

[0046] Furthermore, since the moving axis of the connecting rod 416 is coplanar with the rotating axis of the roller 20 , the moving stroke of the connecting member 414 can be maximized when the first trigger member 21 rotates to the highest point regardless of whether the roller 20 rotates clockwise or counterclockwise.

[0047] like Figure 2 As shown, the first trigger member 21 is a first cam, and the axis of the first cam is colinear with the rotation axis of the roller 20. The structure of the first cam has the advantages of simple structure and easy installation.

[0048] like Figure 4 As shown, the reset member 413 includes a reset spring sleeved on the magnet 412. The reset spring is used to drive the magnet 412 to move, which has the advantages of easy material acquisition and low cost.

[0049] like Figure 5 and Figure 6As shown, when the detection member 40 is provided with the induction coil structure 41 corresponding to the second trigger member 31, the brake member 30 includes a brake pedal swingably provided on the frame 10, the brake pedal can cooperate with the roller 20, and the second trigger member 31 includes a second cam, and the rotation axis of the second cam coincides with the rotation axis of the brake pedal. With the above arrangement, by stepping on the brake pedal, the second cam can be driven to move, thereby driving the magnet 412 to move.

[0050] In one embodiment, the brake component 30 also includes a brake shaft and a brake cam. The brake pedal, the second cam and the brake cam are all installed on the brake shaft. When the brake pedal is stepped on, the brake cam can be driven to rotate, and the brake cam can contact the roller 20, thereby braking the roller 20.

[0051] It should be noted that the detection member 40 may include one induction coil 411, and in this case, the magnets 412 corresponding to the first trigger member 21 and the second trigger member 31 are both disposed in the induction coil 411. Alternatively, the detection member 40 may include two induction coils 411, and the magnets 412 corresponding to the first trigger member 21 and the second trigger member 31 are respectively disposed in the corresponding induction coils 411.

[0052] like Figure 7 As shown, the detection element 40 also includes a full-bridge rectifier circuit, and the induction coil 411 is connected to the full-bridge rectifier circuit. The full-bridge rectifier circuit can be used to store the electrical energy generated during the detection process of the detection element 40, and then supply it to other components.

[0053] The detection component further includes an energy storage component 42 and a power resistor 43. The energy storage component 42 and the power resistor 43 are arranged in parallel, and the induction coil 411 is respectively arranged in series with the energy storage component 42 and the power resistor 43. The energy storage component 42 can be used to store energy, and the power resistor 43 can be used to protect the energy storage component 42 to prevent the energy storage component 42 from being broken down.

[0054] Specifically, the energy storage component 42 is an energy storage capacitor.

[0055] Among them, the detection element also includes a rectifier circuit, which includes a first branch 44, a second branch 45, a third branch 46 and a fourth branch 47 which are connected in sequence to form a ring loop, and diodes are arranged on the first branch 44, the second branch 45, the third branch 46 and the fourth branch 47. The first end of the induction coil 411 is electrically connected to the first end of the first branch 44, the first end of the second branch 45 is electrically connected to the first end of the energy storage component 42 and the first end of the power resistor 43, the first end of the third branch 46 is electrically connected to the second end of the induction coil 411, and the first end of the fourth branch 47 is electrically connected to the second end of the energy storage component 42 and the second end of the power resistor 43.

[0056] When a positive potential difference is generated in the induction coil 411, the current can flow through the first branch 44, the power resistor 43 and the third branch 46 in sequence, and replenish the energy storage component 42. When a reverse potential difference is generated in the induction coil 411, the current can flow through the second branch 45, the power resistor 43 and the fourth branch 47 in sequence, and replenish the energy storage component 42.

[0057] Another embodiment of the present invention provides an electric bed, which includes a bed body and a walking mechanism, wherein the walking mechanism is located below the bed body, and the frame 10 of the walking mechanism is connected to the bed body, and the walking mechanism is the walking mechanism provided above. By using the electric bed, the brake member 30 can be switched between a locked position and an unlocked position by moving the brake member 30 relative to the frame 10, and when the brake member 30 moves, it can drive the second trigger member 31 to move, and the second trigger member 31 can trigger the detection member 40, thereby causing the detection member 40 to generate a potential difference to determine the position of the brake member 30. When the brake member 30 is in the unlocked position, the roller 20 can be switched to a free state, and when the roller 20 rolls, it can drive the first trigger member 21 set on the roller 20 to move, and the first trigger member 21 can trigger the detection member 40, thereby causing the detection member 40 to generate a potential difference to determine the movement state of the roller 20. Compared with the solution of using multiple sensors for detection in the related art, the walking mechanism can detect the braking state and the state of the roller 20 through only one detection member 40, which reduces the difficulty of wiring.

[0058] In this embodiment, a controller is provided on the bed body, and the electric bed further includes a wireless module, a transmitting end of the wireless module is connected to a detection member 40 of the walking mechanism by signal, a receiving end of the wireless module is connected to a controller by signal, and the walking mechanism further includes an electric wheel provided on the frame 10, and the controller is connected to the electric wheel by signal. The wireless module can transmit the potential difference signal generated by the detection member 40 to the controller, and then the controller is used to determine the position of the brake member 30, the rolling direction and rolling speed of the roller 20, and then control the state and speed of the electric wheel.

[0059] Among them, since the controller is set on the bed and the electric bed has a lifting function, the bed can be close to or away from the frame 10. The use of a wireless module can avoid the use of a wire harness to connect the controller and the detection component 40, thereby solving the problem of difficult wiring.

[0060] Specifically, the calculated rolling speed of the roller 20 can be compared with the rolling speed of the electric wheel, and then the electric wheel can be accelerated or decelerated through the controller.

[0061] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0062] Unless otherwise specifically stated, the relative arrangement, numerical expressions and numerical values ​​of the parts and steps set forth in these embodiments do not limit the scope of the present invention. Meanwhile, it should be understood that, for ease of description, the sizes of the various parts shown in the accompanying drawings are not drawn according to the actual proportional relationship. The technology, method and equipment known to those of ordinary skill in the relevant art may not be discussed in detail, but in appropriate cases, the technology, method and equipment should be considered as a part of the specification. In all examples shown and discussed here, any specific value should be interpreted as being merely exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, and therefore, once a certain item is defined in an accompanying drawing, it does not need to be further discussed in subsequent drawings.

[0063] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings. They are only for the convenience of describing the present invention and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the devices or elements referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of the present invention. The directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0064] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0065] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. If not otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of the present invention.

[0066] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A walking mechanism, characterized in that: The walking mechanism comprises: Frame (10); A roller (20) is rotatably arranged on the frame (10), the roller (20) has a free state and a brake state, and a first trigger member (21) is arranged on the roller (20); a brake member (30) movably arranged on the frame (10); the brake member (30) can cooperate with the roller (20) and has a locking position and an unlocking position; when the brake member (30) is located at the locking position, the roller (20) is in the braking state; when the brake member (30) is switched to the unlocking position, the roller (20) is switched to the free state; and a second trigger member (31) is arranged on the brake member (30); A detection member (40) is arranged on the frame (10); When the roller (20) is in the free state and rolling, the first trigger member (21) can trigger the detection member (40) so that the detection member (40) generates an electric potential difference, and when the brake member (30) switches between the locking position and the unlocking position, the second trigger member (31) can trigger the detection member (40) so that the detection member (40) generates an electric potential difference.

2. The walking mechanism according to claim 1, characterized in that: The detection component (40) has an induction coil structure (41); the first trigger component (21) and / or the second trigger component (31) are arranged corresponding to the induction coil structure (41); the induction coil structure (41) comprises an induction coil (411), a magnet (412) and a reset component (413); the magnet (412) is movably arranged in the induction coil (411); the first trigger component (21) and / or the second trigger component (31) can abut against the magnet (412) to drive the magnet (412) to move; and the reset component (413) can provide a restoring force for the magnet (412) to restore the magnet (412) to an initial position.

3. The walking mechanism according to claim 2, characterized in that: The induction coil structure (41) further comprises a connecting member (414), a first end of the connecting member (414) being connected to the magnet (412), a second end of the connecting member (414) extending to the outside of the induction coil (411), and the first trigger member (21) being capable of abutting against the second end of the connecting member (414).

4. The walking mechanism according to claim 3, characterized in that: When the detection member (40) is provided with the induction coil structure (41) corresponding to the first trigger member (21), the connecting member (414) comprises a push rod (415) and a connecting rod (416); the connecting rod (416) is connected between the push rod (415) and the magnet (412); the push rod (415) comprises a first rod segment (417) and a second rod segment (418); the connecting rod (416) is connected at the connection between the first rod segment (417) and the second rod segment (418); the first rod segment (417) and the second rod segment (418) have different lengths; and the moving axis of the connecting rod (416) is coplanar with the rotating axis of the roller (20).

5. The walking mechanism according to claim 4, characterized in that: The first trigger member (21) is a first cam, and the axis of the first cam is colinear with the rotation axis of the roller (20).

6. The walking mechanism according to claim 2, characterized in that: The reset element (413) comprises a reset spring sleeved on the magnet (412).

7. The walking mechanism according to claim 2, characterized in that: When the induction coil structure (41) is arranged on the detection member (40) corresponding to the second trigger member (31), the brake member (30) includes a brake pedal swingably arranged on the frame (10), and the brake pedal can cooperate with the roller (20), and the second trigger member (31) includes a second cam, and the rotation axis of the second cam coincides with the rotation axis of the brake pedal.

8. The walking mechanism according to claim 2, characterized in that: The detection element (40) further comprises a full-bridge rectifier circuit, and the induction coil (411) is connected to the full-bridge rectifier circuit.

9. An electric hospital bed, characterized in that: The electric hospital bed comprises: Bed; A walking mechanism is located below the bed body, a frame (10) of the walking mechanism is connected to the bed body, and the walking mechanism is the walking mechanism according to any one of claims 1 to 8.

10. The electric hospital bed according to claim 9, characterized in that: The bed body is provided with a controller, and the electric bed further comprises a wireless module, a transmitting end of the wireless module is signal-connected to a detection element (40) of the walking mechanism, a receiving end of the wireless module is signal-connected to the controller, the walking mechanism further comprises an electric wheel provided on the frame (10), and the controller is signal-connected to the electric wheel.

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