Bed backboard and tailboard single motor linkage structure

Abstract

The utility model provides a bed backboard and tail board single motor linkage structure, be with one linkage structure device in one bed frame. The bed frame sets up one telescopic component with motor. The linkage structure includes: one backboard support and one tail board support, connect in the bed frame and can rotate, one driving part, link together the backboard support with the telescopic component, the telescopic component drives the driving part and makes the backboard support same direction rotation, and the bed frame is taken along one backboard to and fro in the two position of lifting and flat, a connecting rod, link between the driving part and the tail board support, the connecting rod should the backboard support lifting, drive the tail board support and make the bed frame one tail board move to the arched position, along with the backboard support to the maximum angle lifting, drive the tail board support reverse, take along the tail board and move to the unfolded position.

Description

Technical Field

[0001] This utility model relates to the field of bed use, and in particular to a linkage structure that converts the torque of a motor into telescopic motion. When the backrest of the bed is raised, the tailboard undergoes two movements: arching and lying flat, achieving the humanized purpose of making it easy to get out of bed. Background Technology

[0002] Japanese Patent No. 2007117182A reduces costs by standardizing the main components of manual and electric beds. In this solution, the bed frame 5 is supported above the trolley section 3 by a lifting link 4, allowing it to be raised and lowered. The bottom 6 is supported by a lifting link 7, also allowing it to be raised and lowered. Electric actuators 8 are connected between the bed frame and the lifting link, and between the bed frame and the lifting link. The drive ends of these electric actuators 8 are spaced 10 away from the feet of the bed frame. A control box 11, containing a controller for controlling the electric actuators, is placed on the bed frame corresponding to this space. A power receiving component is placed on the head side of the bed frame, and a wiring conduit 15 is placed longitudinally on the bed frame to store and support the power cord 17.

[0003] In principle, the bed frame 5 is raised or lowered relative to the platform 3 by operating the electric actuator 8c through a single controller. However, if the backrest 6a is raised or lowered relative to the bed frame 5, or if the kneerest 6c and footrest 6d are bent and connected for raising or lowering, then other electric actuators 8a and 8b must be used. Having three controllers electrically connected to each of the electric actuators 8a, 8b, and 8c makes identification difficult and could lead to operational confusion.

[0004] As an alternative, the control box 11 can be programmed with control circuitry or software to operate multiple electric actuators 8a, 8b, and 8c via a single controller. Unfortunately, each electric actuator 8 is expensive, relatively increasing the bed's manufacturing cost and resulting in a high selling price. Moreover, the synchronized lifting of the backrest plate 6a and knee plate 6c causes the patient to sit with their knees bent on the bed, hindering the ease of getting out of bed. Utility Model Content

[0005] In order to reduce manufacturing costs and enhance market competitiveness, this utility model provides a linkage structure. The main purpose is to use a single electric cylinder to convert motor torque into telescopic motion, drive the bed backboard to rise, and cause the tailboard to undergo two movements: arching and lying flat. This allows patients lying in bed to smoothly change from a supine position with bent knees to a sitting position with their legs freely extended, improving the convenience of getting out of bed and human comfort.

[0006] To achieve the aforementioned objectives, this utility model provides a single-motor linkage structure for a bed backrest and tailboard, which is installed on a bed frame. The bed frame is equipped with a telescopic assembly with a motor. The linkage structure includes: a backrest support and a tailboard support, connected to the bed frame and rotatable; a driving member connecting the backrest support and the telescopic assembly, the telescopic assembly driving the driving member to rotate the backrest support in the same direction, causing one backrest of the bed frame to move back and forth between raised and flat positions; a connecting rod connecting the driving member and the tailboard support, the connecting rod driving the tailboard support to move one tailboard of the bed frame to an arched position due to the raising of the backrest support, and as the backrest support rises to its maximum angle, it drives the tailboard support to reverse, causing the tailboard to move to the unfolded position.

[0007] In a preferred embodiment, the tailplate bracket is fixed with a connector for pivotally connecting the link.

[0008] In a preferred embodiment, the connector is provided with a deactivation hole and an operation hole. The linkage is provided with a connection hole and a linkage hole. A pivot shaft passes through the operation hole and the linkage hole, causing the tailplate support to perform work as the backplate support is raised; the pivot shaft passes through the deactivation hole and the connection hole, causing the tailplate support to not perform work.

[0009] The advantage of this invention is that it can improve the convenience of getting out of bed and enhance human comfort. Attached Figure Description

[0010] Figure 1 This is a combined perspective view of the first embodiment of the linkage structure of this utility model.

[0011] Figure 2 for Figure 1 Configuration diagram of the linkage structure mounted on the bed frame.

[0012] Figure 3 To have Figure 2 A schematic diagram of an electric bed with a bed frame.

[0013] Figure 4 Diagram of the interlocking structure for keeping the bed flat in standby mode.

[0014] Figure 5 Diagram showing the user in a supine position with knees bent while using the bed.

[0015] Figure 6 Diagram showing the sitting posture for using the bed while keeping the legs freely extended.

[0016] Figure 7 This is an exploded view of the second embodiment of the linkage structure of this utility model.

[0017] Figure 8 for Figure 7 Configuration diagram of the linkage structure mounted on the bed frame.

[0018] Explanation of reference numerals in the attached drawings: 10. Linkage structure; 11. Backplate support; 12, 21. Side rods; 13. Upper crossbar; 14. Lower crossbar; 15. Roller; 16. Shaft plate; 17. Driving element; 18. Main hole; 19. Sub-shaft; 20. Tailplate support; 22. Driven rod; 23. Tail rod; 24. Shaft part; 25. Connecting part; 25a. Stop hole; 25b. Operating hole; 26. Pivot shaft; 27. Wheel; 28. Connecting rod; 28a. Linking hole; 28b. Motor; 30. Telescopic assembly; 31. Connecting part; 32. Fixing plate; 33. Backplate track; 34. Fixing part; 35. Electric bed; 40. Bed frame; 41. Base; 42. Backplate; 43. Middle plate; 44. Tailplate; 45. Knee plate; 46. Foot plate; 47. Detailed Implementation

[0019] As shown in the figure, this utility model provides a single-motor linkage structure for the headboard and tailboard of a bed, including:

[0020] A bed frame 41 includes: a backrest 43 rotatably connected to the bed frame 41 and reciprocating between a raised position and a flat position; and a tailboard 45 rotatably connected to the bed frame 41 and reciprocating between an arched position and an unfolded position.

[0021] A telescopic assembly 31, one end of which is rotatably mounted on the bed frame 41, the telescopic assembly 31 having a motor 30;

[0022] A backrest bracket 11 is rotatably connected to the bed frame 41;

[0023] An active component 17 connects the backplate support 11 to the other end of the telescopic assembly 31. The telescopic assembly 31 drives the active component 17 to rotate the backplate support 11 in the same direction, causing the backplate 43 to move back and forth between the raised and flat positions.

[0024] A tailboard bracket 20 is rotatably connected to the bed frame 41; and

[0025] A link 28 is connected between the driving member 17 and the tailplate bracket 20. The link 28 drives the tailplate bracket 20 to move the tailplate 45 to the arched position in response to the lifting of the backplate bracket 11. As the backplate bracket 11 is lifted to the maximum angle, the tailplate bracket 20 is reversed, which moves the tailplate 45 to the unfolded position.

[0026] The tailplate bracket 20 has a connecting piece 25 fixed to it, which is used to pivotally connect the connecting rod 28.

[0027] The connector 25 is provided with a deactivation hole 25a and an operation hole 25b; the connecting rod 28 is provided with a connection hole 28a and a linkage hole 28b; a pivot shaft 26 passes through the operation hole 25b and the linkage hole 28b, so that the tailplate support 20 performs work as the backplate support 11 is raised; the pivot shaft 26 passes through the deactivation hole 25a and the connection hole 28a, so that the tailplate support 20 does not perform work.

[0028] like Figure 1 As shown, in the first embodiment of the linkage structure 10 of this utility model, it includes: a back plate bracket 11, an active member 17, a tail plate bracket 20, a connecting member 25 and a connecting rod 28.

[0029] In this embodiment of the invention, the back panel support 11 is a multi-frame structure with two rollers 15 and two axle plates 16. The multi-frame structure has two side bars 12, an upper crossbar 13, and a lower crossbar 14. The upper crossbar 13 is fixed to one end of each of the two side bars 12, and the lower crossbar 14 is fixed to the other end of each of the two side bars 12, together forming the four sides of the hollow frame. The two rollers 15 are located on both sides of the back panel support 11, and are pivotally connected to the end of the upper crossbar 13 that passes through the side bar 12. The two axle plates 16 are located on both sides of the back panel support 11, and are welded to the outside of the corresponding side bar 12, and are located on the same side of the side bar 12 as the rollers 15.

[0030] In this embodiment of the invention, the tailgate bracket 20 is another multi-frame structure with two wheels 27. This multi-frame structure also has two side rods 21, a driven rod 22, and a tail rod 23. The driven rod 22 is welded to one end of each of the two side rods 21, and the tail rod 23 is fixed to the other end of each of the two side rods 21, together forming the four sides of a T-shaped frame. Two shafts 24 are located at the two ends of the driven rod 22, extending beyond the side rods 21. The two wheels 27 are located on both sides of the tailgate bracket 20, and are pivotally connected to the end of the tail rod 23 that extends beyond the side rod 21.

[0031] In this embodiment of the invention, the connecting rod 28 is a bent tube. In some embodiments, the connecting rod 28 may be a solid straight rod or other functional shape, as part of the linkage structure 10.

[0032] A secondary shaft 19 passes through the overlapping portion of the connecting rod 28 and the driving member 17, connecting the driving member 17 and the connecting rod 28 together. A pivot shaft 26 (see also...) Figure 4 As shown, the connecting rod 28 and the connecting member 25 overlap, so that the connecting member 25, the connecting rod 28 and the driving member 17 form a linkage mechanism.

[0033] In this embodiment of the invention, the driving member 17 is composed of two arched pieces. The middle portion of the two arched pieces is welded to the lower crossbar 14 and can rotate in the same direction, thus combining the driving member 17 with the linkage mechanism. One end of the driving member 17 has a forked design and two main holes 18. In some embodiments, the driving member 17 is made of a solid body or a tube, which is also within the scope of this invention.

[0034] In this embodiment of the utility model, the connector 25 is composed of two metal plates, one end of which is fixed to the center of the driven rod 22, so that the tail plate bracket 20 works synchronously with the back plate bracket 11.

[0035] like Figure 2 As shown, the linkage structure 10 is mounted on a bed frame 41. The two shaft pieces 16 are pivotally connected to two opposing fixed pieces 33 on the bed frame 41, allowing the backrest support 11 to be rotatably connected to the bed frame 41 near the head end. The two shaft portions 24 are inserted into two opposing fixing portions 35 on the bed frame 41. These fixing portions 35 are similar to U-shaped pieces, capable of holding the shaft portions 24 and supporting the tailboard support 20 to be rotatably connected to the bed frame 41 near the foot end. Thus, the linkage structure 10, with the active member 17 cooperating with the connecting member 25, supports the connecting rod 28 suspended in the middle of the bed frame 41.

[0036] Typically, the bed frame 41 is equipped with a telescopic assembly 31, one free end of which is engaged with the main hole 18 via a pin-like connector 32 (see [link]). Figure 1 (As shown). The telescopic assembly 31 has a motor 30, the torque of which is converted into a telescopic motion, which is transmitted to the backplate support 11 through the driving member 17, keeping the entire linkage structure 10 in a stationary standby state on the bed frame 41. Therefore, the telescopic assembly 31 is also called an electric cylinder.

[0037] like Figure 3 As shown, the bed frame 41 is fitted with a base 42, which has a lifting function and is positioned on the ground or floor, becoming the lower component of the electric bed 40. The bed frame 41 is covered with a board assembly to support a mattress (not shown) and to conceal the linkage structure 10, becoming the upper component of the electric bed 40.

[0038] Specifically, the panel assembly includes: a back panel 43 rotatably connected to the bed frame 41 to conceal the electric cylinder and the back panel support; a middle panel 44 fixed to the middle part of the bed frame 41 to conceal a portion of the linkage structure; a knee panel 46 rotatably connected to the bed frame 41; and a foot panel 47 rotatably connected to the knee panel 46 and located near the foot of the bed frame 41. The knee panel 46 and the foot panel 47 together form a tail panel 45 to conceal the remaining parts of the linkage structure.

[0039] As for the connection structure between the various panels and the bed frame 41, it is not the core technology of this utility model, and therefore will not be described in detail. Those interested can browse relevant patents or search for electric beds on the market.

[0040] like Figure 4 As shown, when powered on, the motor does not start, and the telescopic assembly 31 restrains the active member 17, with the backrest bracket 11 pressing against the backrest 43, keeping it in a flat, lateral position. The active member 17 pushes the connecting member 25 against the knee plate 46 via the linkage 28 and extends the footboard 47, keeping the tailboard 45 in an extended position, allowing a patient (not shown) to lie on the electric bed 40.

[0041] like Figure 5 As shown, after the motor starts, the telescopic assembly 31 extends in length, pushing the connecting member 32 to move circumferentially around the lower crossbar 14. Centered on the pivot point, the backplate support 11 swings in the same direction as the driving member 17, with the roller 15 (see [reference]) Figure 1 (As shown) One of the two backrest tracks 34 that roll into contact with the backrest 43 drives the backrest 43 to rise relative to the bed frame 41 to an angle, for example, 30°. In this way, the patient's upper body leans against the backrest 43, maintaining a supine position.

[0042] Simultaneously, the secondary shaft 19 swings clockwise, pulling the connecting rod 28 to push the connecting member 25 in a circular motion, causing the tailplate bracket 20 to swing counterclockwise, with the wheel 27 (see [link]). Figure 1 (As shown) The knee plate 46 is rolled up relative to the bed frame 41 to approximately the same angle. The footboard 47 is pulled up by the knee plate 46, causing the tailboard 45 to remain in an arched position, providing the patient with the knees bent and maintaining human comfort.

[0043] like Figure 6As shown, the telescopic component 31 continuously extends, and the active member 17 drives the backrest support 11 to swing in the same direction, supporting the backrest 43 to rise to 45° relative to the bed frame 41. Furthermore, when the telescopic component 31 extends to its final position, the active member 17 drives the backrest support 11 to a maximum angle of elevation, for example, approximately 60°. Therefore, the backrest 43 supports the upper body, facilitating the patient's sitting position into a preparatory state for sitting up.

[0044] Furthermore, the secondary shaft 19 moves downward from the right side of the lower crossbar 14 through the critical point of circular motion. From the secondary shaft 19 to the pivot shaft 26, the connecting rod 28 is kept in an inclined state. Moreover, the driving member 17 changes from a thrust to a pull, causing the tailplate support 20 to swing from a counterclockwise direction to a clockwise direction, bearing the combined weight of the tailplate 45 and the legs, preventing accidents.

[0045] exist Figure 6 In this process, under the traction of the active component 17, the inclined connecting rod 28 resists the combined weight of the tailboard 45 and the legs transmitted by the connecting component 25 until the tailboard support 20 presses against the knee plate 46, maintaining a level horizontal position together with the foot plate 47. Because the tailboard 45 is unfolded, it no longer obstructs the free extension of the legs, making it easier for the patient sitting on the bed frame 41 to get up and leave.

[0046] When the patient returns to the bed frame 41 and sits down, both legs are stretched out and rested on the tailboard 45. Figures 6 to 4 By reversing the sequence of operations and manipulating the linkage 10, the patient can be placed back on the electric bed 40.

[0047] like Figure 7 As shown, the second embodiment of the linkage structure 10 is roughly the same as the first embodiment. Both are composed of the active member 17, the connecting member 25 and the connecting rod 28 to form the linkage mechanism. The lifting action of the back plate bracket 11 drives the tail plate bracket 20 to arch up and then unfold.

[0048] The difference is that in the second embodiment, the following options are available: the linkage structure 10 operates the tail plate bracket 20 to move as the back plate bracket 11 is raised; the linkage structure 10 is deactivated, the back plate bracket 11 moves up independently, and the tail plate bracket 20 remains in the extended state and does not perform the arching action.

[0049] In the second embodiment, the linkage structure 10 is modified as follows: the connector 25 is provided with multiple holes for selective insertion of the pivot shaft 26. Each hole is divided into a deactivation hole 25a and an operation hole 25b.

[0050] Secondly, the connecting rod 28 is also provided with multiple holes, which are divided into connecting holes 28a and linkage holes 28b. In this embodiment, the connecting hole 28a is an elongated hole design, and the linkage hole 28b is a round hole design.

[0051] In terms of usage, the second embodiment of the linkage structure 10 offers a variety of variations for patients or users to choose from. For example, when the pivot shaft 26 is inserted into the overlapping operating hole 25b and linkage hole 28b, the backplate support 11 gradually rises. The linkage mechanism composed of the active member 17, the connecting member 25, and the connecting rod 28 drives the tailplate support 20 to first... Figure 5 The arching motion, then like Figure 6 The general return to the unfolding action.

[0052] Alternatively, when the pivot 26 is inserted into the overlapping deactivation hole 25a and the connecting hole 28a, the connecting hole 28a allows the connecting rod 28 to displace relative to the pivot 26, preventing the driving member 17 from performing work on the connecting member 25, causing the backplate support 11 to... Figure 8 As the body gradually rises, the tailplate support 20 remains in an extended position and does not arch, allowing the patient to get out of bed at any time.

Claims

1. A single-motor linkage structure for a bed backrest and tailboard, characterized in that, include: A bed frame (41) includes: a backrest (43) rotatably connected to the bed frame (41) and reciprocating between a raised position and a flat position; A tailplate (45) is rotatably connected to the bed frame (41) and reciprocates between an arched position and an unfolded position; A telescopic assembly (31) is rotatably mounted at one end to the bed frame (41), the telescopic assembly (31) having a motor (30); A backrest bracket (11) is rotatably connected to the bed frame (41); An active component (17) connects the backplate support (11) to the other end of the telescopic assembly (31). The telescopic assembly (31) drives the active component (17) to rotate the backplate support (11) in the same direction, causing the backplate (43) to move back and forth between the raised and flat positions. A tailboard bracket (20) is rotatably connected to the bed frame (41); and A link (28) is connected between the driving member (17) and the tailplate bracket (20). The link (28) drives the tailplate bracket (20) to move the tailplate (45) to the arched position due to the lifting of the backplate bracket (11). As the backplate bracket (11) lifts to the maximum angle, it drives the tailplate bracket (20) to reverse, and moves the tailplate (45) to the unfolded position.

2. The single-motor linkage structure for the bed backrest and tailboard as described in claim 1, characterized in that, The tailplate bracket (20) is fixed with a connector (25) for pivotally connecting the link (28).

3. The single-motor linkage structure for the bed backrest and tailboard as described in claim 2, characterized in that, The connector (25) is provided with a deactivation hole (25a) and an operation hole (25b); the connecting rod (28) is provided with a connection hole (28a) and a linkage hole (28b); a pivot shaft (26) passes through the operation hole (25b) and the linkage hole (28b) to make the tailplate support (20) work as the backplate support (11) is raised; the pivot shaft (26) passes through the deactivation hole (25a) and the connection hole (28a) to make the tailplate support (20) not work.

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