Multi-gear adjusting rod device and electric bed using same

Abstract

The utility model relates to an electric bed, in particular to a multi-gear adjusting rod device and an electric bed using the same. A limiting piece used on an existing electric bed cannot move to change the position so as to be flexibly matched with mattresses with different lengths. The multi-gear adjusting rod device and the limiting piece are used in a matched mode, the multi-gear adjusting rod device comprises a connecting device which can be connected with the limiting piece so that the limiting piece can be arranged at the tail of the electric bed to abut against a mattress, the connecting device is the multi-gear adjusting rod device and comprises a fixing base and an adjusting rod movably arranged on the fixing base, and the fixing base can be fixedly connected to the tail of the electric bed. The adjusting rod can move back and forth relative to the fixing base in the length direction of the mattress and form multiple gear locking, and the end, away from the fixing base, of the adjusting rod is fixedly connected with the limiting piece. The multi-gear adjusting rod device can drive the limiting piece to perform multi-gear moving adjustment in the length direction of the mattress in the using process, mattresses of different lengths are matched for limiting, the production and warehouse management content and difficulty are simplified, and the cost of the electric bed is reduced.

Description

Technical Field

[0001] The utility model relates to an electric bed, in particular to a multi-gear regulating rod device and an electric bed using the same. Background Art

[0002] When a conventional electric bed and a mattress are used together, a limit piece needs to be set at the tail of the electric bed to press against the tail end of the mattress to limit the mattress. The position of the existing limit piece cannot be adjusted, and the length of the mattress limited after being matched with the electric bed is fixed. Since there are many specifications and sizes of mattress lengths, if they are to be matched one by one, electric beds of different lengths must be specially produced and manufactured and a limit piece must be installed at the tail. This will result in a large number of electric bed models and accessories, which may easily cause confusion in production and warehouse management, increase the requirements for production and warehouse management, and further increase the cost of using electric beds. Utility Model Content

[0003] To address the technical problem of existing electric bed restraints being unable to adjust relative to the bed and thus unable to adjust to mattress lengths, the present invention provides a multi-position adjustment lever device and restraint device for use. The multi-position adjustment lever device can be adjusted to a number of positions along the length of the mattress during use. Connecting the restraint device to the device allows the device to accommodate mattresses of varying lengths, effectively simplifying production and warehouse management, and controlling the cost of electric beds. Electric beds using this multi-position adjustment lever device can accommodate mattresses of varying lengths, offering excellent versatility and a wide range of applications.

[0004] The present invention solves the technical problem by adopting a technical solution: a multi-position adjustment rod device, including a connection device that can be connected to a limiter so that it is located at the end of an electric bed and presses against the mattress. The connection device is characterized in that the multi-position adjustment rod device includes a fixed base and an adjustment rod movably mounted thereon. The fixed base can be fixedly connected to the end of the electric bed. The adjustment rod can move back and forth relative to the fixed base along the length of the mattress and form a position lock of multiple gears. The end of the adjustment rod away from the fixed base is fixedly connected to the limiter. The multi-position adjustment rod device allows the limiter to move and change position relative to the electric bed and lock, thereby matching mattresses of different lengths and pressing against the end of the mattress to limit its position. During operation, according to the length of the different mattresses, the adjustment rod moves back and forth relative to the fixed base along the length of the mattress and locks after moving to the corresponding gear, so that the limiter fixed to one end of the adjustment rod adapts to the mattress of the corresponding length and limits its position.

[0005] As a further improvement and supplement to the above-mentioned technical solution, the present invention adopts the following technical measures: the fixing seat is a tube seat with a hollow tubular cavity, one end of the adjustment rod penetrates the tubular cavity and can move back and forth along the tubular cavity, and an unlockable gear locking structure is provided between the insertion section of the adjustment rod and the tubular cavity to change and lock the overlapping length of the adjustment rod and the tubular cavity, so that the adjustment rod is locked in a gear corresponding to the overlapping length. By moving the adjustment rod within the tubular cavity and locking the current position of the adjustment rod using the gear locking structure after the adjustment rod is moved into position, the overlapping length of the adjustment rod and the tubular cavity is locked in the corresponding gear. When it is necessary to move the adjustment rod to change the position of the limiter to match a mattress of a different length, the locking structure can be unlocked, and the adjustment rod can be moved relative to the tubular cavity to adjust to a new locking gear.

[0006] Preferably, the gear locking structure includes a locking pin and locking holes on the tube base and the adjusting rod. One of the tube base and the adjusting rod is provided with multiple locking holes distributed along the length direction, and the other is provided with at least one locking hole. The locking pin passes through the locking holes on the tube base and the adjusting rod to lock the position of the adjusting rod, so that the adjusting rod is locked in the corresponding locking hole gear position formed by the combination of the locking holes on the tube base and the adjusting rod. The gear locking structure adopts a simple combination of the locking pin passing through the locking hole. When the locking pin passes through the locking holes on the tube base and the adjusting rod at the same time, the adjusting rod can be locked to the tube base. At this time, the adjusting rod is locked in the gear position formed by the current locking holes. Pulling out the locking pin to disengage it from the locking holes on the tube base and the adjusting rod unlocks the adjusting rod and allows it to move freely relative to the tube cavity to adjust the locking gear position.

[0007] Preferably, the gear locking structure includes a plurality of locking teeth distributed along the axial direction of the inner wall of the tubular cavity and a stopper provided at one end through which the adjustment rod passes, and at least one of the locking teeth and the stopper is an elastic body. When the adjustment rod moves back and forth along the tubular cavity, the end of the stopper can be locked into a slot formed between any two axially adjacent locking teeth, so that the adjustment rod is locked in the slot gear formed by the two adjacent locking teeth. The stopper is locked by the slot formed by the two adjacent locking teeth on the inner wall of the tubular cavity, and the movable position of the adjustment rod relative to the tube seat is locked. Since at least one of the locking teeth and the stopper is an elastic body, pushing and pulling the adjustment rod can cause the corresponding elastic body to deform to achieve an unlocking operation of the stopper from the slot. The unlocked stopper and the adjustment rod can be moved relative to the tube seat again. During the movement of the adjustment rod, the stopper will continuously lock and unlock relative to the slot it passes through. Every two axially adjacent locking teeth form a slot corresponding to the gear position.

[0008] Preferably, the inner wall of the tubular cavity is provided with two groups of locking teeth distributed along the axial direction, the two groups of locking teeth forming a plurality of slot groups with two slots paired in a group, the two slots of the same slot group corresponding to one gear position, the stopper extends along the radial direction of the tubular cavity, and the two ends of the stopper are respectively locked in two slots in the slot group. The inner wall of the tubular cavity is provided with two groups of locking teeth distributed along the axial direction, the two groups of locking teeth forming a plurality of slot groups with two slots paired in a group along the axial direction, the same slot group corresponds to one locked gear position and includes two opposite slots, the corresponding ends of the stopper along the radial direction of the tubular cavity are respectively locked and matched with the two opposite slots, the stopper is locked with the two slots at each locked gear position, further improving the reliability of the stopper position locking.

[0009] Preferably, the end of the stopper and the outer end surface of the slot are both arc-shaped, and the width of the slot gradually increases from the inside to the outside. The arc-shaped end of the stopper cooperates with the outer end surface of the slot, and the width of the slot gradually increases from the inside to the outside, both of which are used to ensure that the end of the stopper can smoothly enter and exit the slot during the movement of the adjustment rod to complete the locking and unlocking of the stopper and the slot.

[0010] Preferably, the stopper is elliptical, with the major axis of the ellipse being the extension direction of the stopper. The stopper adopts an elliptical shape, which is simple in structure and easy to produce. The major axis of the ellipse is the extension direction of the stopper, and both ends are arc-shaped.

[0011] A second object of the present invention is to provide an electric bed comprising a footrest and a bed frame secured thereto, the bed frame being provided with a bed board and a power device for moving the bed board, the end of the bed board at the footrest being provided with a stopper capable of contacting a mattress, the stopper being provided at the end of the bed board via one of the aforementioned multi-position adjustment lever devices, the fixing seat being affixed to the end of the bed board adjacent to the side of the bed board. An electric bed using the aforementioned multi-position adjustment lever device to mount the stopper can change the front-to-back position of the stopper on the electric bed by moving and locking the adjustment lever, thereby adapting to the stopper requirements of mattresses of different lengths and improving the versatility and applicability of the electric bed.

[0012] Preferably, the bed board is provided with a multi-position adjustment lever assembly on each side of the footboard end. The position-limiting member is a crossbar extending along the width of the electric bed, with each end of the crossbar connected to the adjustment levers of the two multi-position adjustment lever assemblies. The crossbar is located at the foot of the electric bed, and is connected to a multi-position adjustment lever assembly at each end. The two assemblies work together to smoothly adjust the crossbar's position. Because the adjustment lever assembly is positioned at each end of the crossbar, the force applied when the crossbar contacts the mattress is effectively shared between the two multi-position adjustment lever assemblies.

[0013] Preferably, the bed board is formed by two independently movable single bed boards arranged side by side, and a crossbar extending along the width of the electric bed is provided at the end of the single bed board on the foot side as a limiter, and a multi-speed adjustment rod device is provided on both sides of the end of the single bed board on the foot side, and the two ends of the crossbar are respectively connected to the adjustment rods of the two multi-speed adjustment rod devices corresponding to the single bed boards. When the bed board is formed by two independently movable single bed boards arranged side by side, the electric bed becomes a double electric bed that can accommodate two people and can independently control the movement of the bed boards. A mattress can be placed on each single bed board. Since both single bed boards have matching crossbars as limiters and are connected to the two multi-speed adjustment rod devices, the crossbars of the two single bed boards can be independently adjusted in front and back positions to adapt to the length of the mattress to limit the mattress.

[0014] The beneficial technical effect of this utility model is that the multi-position adjustment lever device allows the limiter to be moved and locked relative to the electric bed, matching mattresses of different lengths and restraining the end of the mattress. When used with an electric bed, the number of multi-position adjustment lever devices used can be adjusted to match a single or double bed board. The two mattresses on the double bed board can independently adjust the corresponding limiters to adapt to the corresponding mattress lengths. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 : Exploded view of the structure of Example 1.

[0016] Figure 2 : Schematic diagram of the limit seat described in Example 1.

[0017] Figure 3 : Figure 2 AA section view.

[0018] Figure 4 : Figure 3 BB cross-sectional view.

[0019] Figure 5 : Working diagram of embodiment 1.

[0020] Figure 6 : Schematic diagram of the structure of Example 2.

[0021] Figure 7 : Schematic diagram of adjusting the gear position in Example 2.

[0022] Figure 8 : Figure 7 Enlarged view of part C.

[0023] Figure 9 : Working diagram of embodiment 2.

[0024] In the figure: 1. Fixing seat, 1-1. Tube cavity, 1-2. Lug, 1-3. Mounting hole, 2. Adjusting rod, 3. Locking tooth, 4. Stopper, 5. Slot, 6. Bed foot, 7. Bed board, 7-1. Single bed board, 8. Crossbar, 9. Mattress, 11. Bed frame. DETAILED DESCRIPTION

[0025] The present invention will be further described below with reference to the accompanying drawings and specific implementation methods.

[0026] like Figures 1 to 5 As shown, Example 1 is a multi-speed adjustment rod device, including a connecting device that can be connected to a limit piece and is arranged at the tail end of the electric bed to press against the mattress. The connecting device is a multi-speed adjustment rod device, which includes a fixed base 1 and an adjustment rod 2 movably arranged thereon. The fixed base 1 can be fixed to the tail end of the electric bed by screws. Lugs 1-2 are provided on both sides of the fixed base, and mounting holes 1-3 for mounting screws are opened on the lugs. The adjustment rod 2 can move back and forth relative to the fixed base 1 along the length direction of the mattress and form a plurality of gear position locking. The end of the adjustment rod 2 away from the fixed base 1 is fixedly connected to the limit piece.

[0027] During use, according to the different mattress lengths, the adjusting rod is pushed and pulled to move it back and forth relative to the fixed base along the length direction of the mattress. After the adjusting rod moves to the corresponding gear position, it is locked. At this time, the limit piece fixed to one end of the adjusting rod can adapt to the mattress of the corresponding length to limit the mattress.

[0028] Furthermore, the fixing seat 1 is a tube seat with a hollow tubular cavity 1-1, one end of the adjusting rod 2 penetrates the tubular cavity 1-1 and can move back and forth along the tubular cavity 1-1, and an unlockable gear locking structure is provided between the penetration section of the adjusting rod 2 and the tubular cavity 1-1 to change and lock the overlapping length of the adjusting rod 2 and the tubular cavity 1-1, so that the adjusting rod 2 is locked in a gear corresponding to the overlapping length. The gear locking structure in this embodiment includes a plurality of locking teeth 3 distributed along the axial direction of the inner wall of the tubular cavity 1-1 and a stopper 4 provided at one end of the adjusting rod 2, and at least one of the locking teeth 3 and the stopper 4 is an elastic body. When the adjusting rod 2 moves back and forth along the tubular cavity 1-1, the end of the stopper 4 can be locked into a slot 5 formed between any two axially adjacent locking teeth 3, so that the adjusting rod 2 is locked in the slot 5 gear formed by the two adjacent locking teeth 3.

[0029] During operation, the locking groove formed by two adjacent locking teeth on the inner wall of the tube cavity can lock the stopper head, locking the movable position of the adjustment rod relative to the tube base. Because at least one of the locking teeth and the stopper head is an elastic body, pushing or pulling the adjustment rod can cause the corresponding elastic body to deform and release the stopper head from the locking groove, thereby unlocking the stopper head. The unlocked stopper head and the adjustment rod can then be moved relative to the tube base again. During the movement of the adjustment rod, the stopper head continuously locks and unlocks the locking grooves it passes through. Every two axially adjacent locking teeth form a locking groove corresponding to the gear position. In this embodiment, the locking teeth are preferably elastic, and the locking groove formed by the two adjacent locking teeth is elastic. When the end of the stopper head enters the locking groove for locking and exits the groove for unlocking, the locking teeth will deform to facilitate the entry and exit of the end of the stopper head.

[0030] Further, if Figures 3-5 As shown, the inner wall of the tubular cavity 1-1 is provided with two groups of opposite locking teeth 3 distributed along the axial direction. In this embodiment, the two groups of opposite locking teeth are preferably arranged horizontally along the horizontal plane, and the two groups of locking teeth are arranged on the left and right sides of the tubular cavity axis. The two groups of locking teeth 3 form a plurality of slot groups with two slots 5 paired in a group. The two slots 5 of the same slot group correspond to one gear position, and the stop head 4 extends radially along the tubular cavity 1-1, and the two ends of the stop head 4 are respectively locked in the two slots 5 in the slot group; at the same time, the end of the stop head 4 and the outer end face of the slot 5 are both arc-shaped, and the width of the slot 5 gradually increases from the inside to the outside. For the convenience of manufacturing, the stop head 4 is designed to be elliptical, and the major axis of the ellipse is the extension direction of the stop head 4.

[0031] Two sets of opposing locking teeth are axially arranged on the inner wall of the lumen. These two sets of locking teeth form multiple slot groups, each consisting of two slots along the axial direction. Each slot group corresponds to a locked position and includes two opposing slots. The corresponding stopper head locks and matches the two opposing slots at both ends along the radial direction of the lumen. The stopper head locks with both slots simultaneously at each locked position, further enhancing the reliability of the stopper head's position locking. The curved end of the stopper head mates with the outer end surface of the slot, and the slot's width gradually widens from the inside out, all of which ensure that the end of the stopper head can smoothly enter and exit the slot during movement of the adjustment rod, completing the locking and unlocking of the stopper head and the slot.

[0032] In addition, the gear locking structure can also be another structure, including a locking pin and a locking hole on the tube base and the adjusting rod 2, one of the tube base and the adjusting rod 2 is provided with multiple locking holes distributed along the length direction, and the other is provided with at least one locking hole, and the position of the adjusting rod 2 is locked by the locking pin passing through the locking holes on the tube base and the adjusting rod 2 at the same time, so that the adjusting rod 2 is locked in the corresponding lock hole gear formed by the combination of the lock holes on the tube base and the adjusting rod 2.

[0033] like Figures 6 to 9As shown, Example 2 is an electric bed, including bed legs 6 and a bed frame 11 fixed thereon, the bed frame 11 is supported on the ground by multiple bed legs 6, and a bed board 7 and a power device for driving the bed board 7 to move are provided on the bed frame 11, a mattress 9 is placed on the bed board 7, and a limit member is provided at the end of the bed board 7 at the end of the bed to support the mattress 9 and limit its position. The limit member is set at the end of the bed board 7 by the multi-speed adjustment rod device described in Example 1, and the fixing seat 1 is fixed to the end of the bed board 7 adjacent to the side of the bed board 7. This embodiment takes a double bed board as an example. The bed board 7 is composed of two independently movable single bed boards 7-1 placed side by side. Each single bed board 7-1 is provided with a cross bar 8 extending along the width direction of the electric bed as a limiter at the end on the foot side of the bed. A multi-speed adjustment rod device is provided on both sides of the end on the foot side of the bed of the single bed board 7-1. The two ends of the cross bar 8 are respectively connected to the adjustment rods 2 of the two multi-speed adjustment rod devices corresponding to the single bed board 7-1, and the cross bar 8 and the adjustment rods 2 at both ends are an integrated structure.

[0034] The electric bed uses the multi-position adjustment lever device of Example 1 to install the limiter. By moving the adjustment lever and locking the position, the front and rear position of the crossbar serving as the limiter on the electric bed can be changed, thereby adapting to the limit requirements of mattresses of different lengths, thereby improving the versatility and applicability of the electric bed. Figure 7 The four positions L1 / L2 / L3 / L4 are shown for example, but the actual adjustable positions are not limited to the four positions shown. For instructions on using the multi-position adjustment lever device, see Example 1. The two multi-position adjustment devices work together to smoothly adjust the crossbar's position. Adjustment lever devices are attached to each end of the crossbar for positioning, effectively distributing the force applied by the crossbar against the mattress between the two multi-position adjustment lever devices. The two single bed panels can independently adjust the position of their corresponding crossbars, each aligning with the mattress and limiting its position.

[0035] Referring to the embodiment of the double bed board, when the bed board is used by a single person, a multi-speed adjustment rod device described in Example 1 is provided on both sides of the end of the bed board 7 at the foot of the bed. The limiting member is also a cross bar 8 extending along the width direction of the electric bed. The two ends of the cross bar 8 are respectively connected to the adjustment rods 2 of the two multi-speed adjustment rod devices.

Claims

1. A multi-position adjustment lever device, comprising a connection device that can be connected to a limiter so that it is located at the end of an electric bed against a mattress, characterized in that The connecting device is a multi-position regulating rod device, comprising a fixed seat (1) and an regulating rod (2) movably arranged thereon; the fixed seat (1) can be fixedly connected to the tail of the electric bed; the regulating rod (2) can move back and forth relative to the fixed seat (1) along the length direction of the mattress and form a position lock of multiple positions; the end of the regulating rod (2) away from the fixed seat (1) is fixedly connected to a limiting member.

2. The multi-gear adjustment lever device according to claim 1, characterized in that The fixing seat (1) is a tube seat with a hollow tube cavity (1-1), one end of the adjusting rod (2) penetrates into the tube cavity (1-1) and can move back and forth along the tube cavity (1-1), and an unlockable gear locking structure is provided between the penetration section of the adjusting rod (2) and the tube cavity (1-1) to change and lock the overlapping length of the adjusting rod (2) and the tube cavity (1-1), so that the adjusting rod (2) is locked in a gear corresponding to the overlapping length.

3. The multi-gear adjustment lever device according to claim 2, characterized in that The gear locking structure comprises a locking pin and a locking hole on a tube base and an adjusting rod (2); one of the tube base and the adjusting rod (2) is provided with a plurality of locking holes distributed along the length direction, and the other is provided with at least one locking hole; the locking pin passes through the locking holes on the tube base and the adjusting rod (2) to lock the position of the adjusting rod (2), so that the adjusting rod (2) is locked in a corresponding locking hole gear position formed by the combination of the locking holes on the tube base and the adjusting rod (2).

4. The multi-gear adjustment lever device according to claim 2, characterized in that The gear locking structure comprises a plurality of lock teeth (3) distributed along the axial direction of the inner wall of the tubular cavity (1-1) and a stop head (4) provided at one end of the adjusting rod (2) passing through, and at least one of the lock teeth (3) and the stop head (4) is an elastic body. When the adjusting rod (2) moves back and forth along the tubular cavity (1-1), the end of the stop head (4) can be locked in a slot (5) formed between any two axially adjacent lock teeth (3), so that the adjusting rod (2) is locked in the gear position of the slot (5) formed by the two adjacent lock teeth (3).

5. The multi-gear adjustment lever device according to claim 4, characterized in that The inner wall of the tubular cavity (1-1) is provided with two groups of facing lock teeth (3) distributed along the axial direction, and the two groups of lock teeth (3) form a plurality of slot groups in which two slots (5) are paired together, and the two slots (5) in the same slot group correspond to one gear position, and the stop head (4) extends radially along the tubular cavity (1-1), and the two ends of the stop head (4) are respectively locked in the two slots (5) in the slot group.

6. The multi-gear adjustment lever device according to claim 5, characterized in that The end of the stopper (4) and the outer end surface of the clamping slot (5) are both arc-shaped, and the width of the clamping slot (5) gradually increases from the inside to the outside.

7. The multi-gear adjustment lever device according to claim 6, characterized in that The stopper (4) is elliptical, and the major axis of the ellipse is the extension direction of the stopper (4).

8. An electric bed, comprising a bed foot (6) and a bed frame (11) fixed thereto, the bed frame (11) being provided with a bed board (7) and a power device for driving the bed board (7) to move, the end of the bed board (7) at the end of the bed being provided with a stopper capable of supporting the mattress, and characterized in that The limiting member is arranged at the end of the bed board (7) through the multi-gear adjustment rod device according to one of claims 1 to 7, and the fixing seat (1) is fixed to the end of the bed board (7) adjacent to the side of the bed board (7).

9. The electric bed according to claim 8, characterized in that The bed board (7) is provided with a multi-gear adjustment rod device on both sides of the end portion at the bed foot side, the limiting member is a cross bar (8) extending along the width direction of the electric bed, and the two ends of the cross bar (8) are respectively connected to the adjustment rods (2) of the two multi-gear adjustment rod devices.

10. The electric bed according to claim 9, characterized in that The bed board (7) is formed by two independently movable single bed boards (7-1) arranged side by side. A cross bar (8) extending in the width direction of the electric bed is provided at the end of the single bed board (7-1) at the bed end side as a limiter. A multi-speed adjustment rod device is provided on each side of the end of the single bed board (7-1) at the bed end side. The two ends of the cross bar (8) are respectively connected to the adjustment rods (2) of the two multi-speed adjustment rod devices corresponding to the single bed board (7-1).

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