Lifting armrest mechanism on rehabilitation treatment bed

Abstract

A lifting handrail mechanism on a rehabilitation treatment bed comprises a mounting box used for being fixedly connected with a bed frame of the rehabilitation treatment bed, a lead screw driven by a motor is mounted in the mounting box, a nut is connected to the lead screw in a screwed mode, two guide rails in the vertical direction are fixedly connected into the mounting box, and sliding blocks are mounted on the guide rails in a sliding fit mode. The sliding block and the nut are fixedly connected through a connecting plate, two long holes in the vertical direction are formed in the mounting box, a locking adjusting box is arranged outside the mounting box and fixedly connected with the connecting plate through bolts penetrating through the long holes, and a through hole in the vertical direction is formed in the locking adjusting box. The vertical edge of the L-shaped handrail is installed in the through hole in a vertically sliding fit mode, two rows of grooves are formed in the vertical edge of the L-shaped handrail and are spaced by 90 degrees in the circumferential direction of the vertical edge of the L-shaped handrail, a cam shaft is rotationally connected to the position, on one side of the vertical edge of the L-shaped handrail, of the locking adjusting box, and the structure of the mechanism facilitates supporting of a patient.

Description

Technical Field

[0001] The utility model relates to a rehabilitation treatment bed, in particular to an armrest on the rehabilitation treatment bed, and belongs to the technical field of machinery. Background Art

[0002] On rehabilitation beds or medical beds, lifting armrests are common configurations. On the one hand, the armrests play a protective role, and on the other hand, they can be adjusted to a suitable height to facilitate patients to use them as support for activities. In Chinese patent applications, there are many lifting armrests on medical beds disclosed, such as Chinese Patent Application No. 2018102312561 discloses a lifting armrest mechanism for a medical bed, which is driven by a cylinder. The armrest is in a horizontal state and has a good supporting effect, but the cylinder lifting is not continuous in adjusting the height, which cannot meet the needs of different patients, and the armrest is generally limited to the side. Chinese Patent Application No. 201810231845X discloses a transport medical bed with a lifting armrest mechanism, which also has the above-mentioned limitations. Chinese Patent Application No. 2022201199652 discloses a detachable armrest for a medical bed, which focuses on detachability and easy operation, but has limited functions. Summary of the invention

[0003] The purpose of the utility model is to overcome the above-mentioned problems existing in the lifting armrests on the current rehabilitation treatment bed and to provide a lifting armrest mechanism on the rehabilitation treatment bed.

[0004] In order to achieve the purpose of the utility model, the following technical scheme is adopted: a lifting armrest mechanism on a rehabilitation bed, including an installation box for fixed connection with the bed frame of the rehabilitation bed, a lead screw driven by a motor is installed in the installation box, the motor is connected to a control switch, a nut is screwed on the lead screw, two guide rails in the up and down directions are fixedly connected in the installation box, a slider is slidably installed on the guide rail, the slider and the nut are fixedly connected through a connecting plate, two long holes in the up and down directions are opened on the installation box, and a locking adjustment box is arranged outside the installation box The adjustment locking box is fixedly connected to the connecting plate by bolts passing through the long holes. The locking adjustment box is provided with through holes in the up and down directions. The vertical side of the L-shaped handrail is slidably installed in the through holes up and down. Two rows of grooves are provided on the vertical side of the L-shaped handrail. The rows refer to the up and down directions. Each row of grooves is composed of a plurality of grooves. The two rows of grooves are 90 degrees apart in the circumferential direction of the vertical side of the L-shaped handrail. A camshaft is rotatably connected to the locking adjustment box on one side of the vertical side of the L-shaped handrail. The axial direction of the camshaft is in the horizontal direction. When the camshaft rotates, it can cooperate with the groove to lock the L-shaped handrail.

[0005] Furthermore, an emergency stop switch is installed on the horizontal side of the L-shaped handrail, and the emergency stop switch controls the start and stop of the motor.

[0006] Furthermore, the stroke of the lead screw is greater than or equal to the distance between two adjacent grooves.

[0007] Furthermore, the lower end of the vertical side of the L-shaped handrail is fixedly connected to a limit cover, and the size of the limit cover is larger than the through hole.

[0008] The positive and beneficial technical effects of the utility model are: the structure of the mechanism is relatively simple, the height is steplessly adjusted, and it can adapt to different patients. The L-shaped armrest can be rotated 90 degrees, and the horizontal side of the L-shaped armrest can be consistent with the length direction of the bed or the width direction of the bed, which is convenient for patients to support and can also be used for training. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 It is an overall schematic diagram of the utility model.

[0010] Figure 2 This is a schematic diagram of the internal installation.

[0011] Figure 3 This is a schematic diagram of the camshaft.

[0012] Figure 4 A schematic diagram of a camshaft.

[0013] Figure 5 This is a schematic diagram of the mechanism installed on the treatment bed. DETAILED DESCRIPTION

[0014] In order to more fully explain the implementation of the utility model, implementation examples of the utility model are provided. These implementation examples are only for the purpose of illustrating the utility model and do not limit the scope of the utility model.

[0015] The present invention is further explained in detail in conjunction with the accompanying drawings, in which the marks are: 1: installation box; 2: locking adjustment box; 3: L-shaped handrail; 4: groove; 5: handle; 6: emergency stop switch; 7: motor; 8: screw; 9: nut; 10: slider; 11: guide rail; 12: connecting plate; 13: camshaft; 131: notch; 14: long hole; 15: limit cover.

[0016] As shown in the attached drawings, a lifting armrest mechanism on a rehabilitation bed includes an installation box 1 for fixed connection with the bed frame of the rehabilitation bed, a lead screw 8 driven by a motor 7 is installed in the installation box 1, the motor is connected to a control switch, a nut 9 is screwed on the lead screw, two guide rails 11 in the vertical direction are fixedly connected in the installation box, a slider 10 is slidably installed on the guide rail 11, the slider and the nut are fixedly connected through a connecting plate 12, two long holes 14 in the vertical direction are opened on the installation box, a locking adjustment box 2 is arranged outside the installation box, the adjustment locking box is fixedly connected to the connecting plate by bolts passing through the long holes, the locking adjustment box is opened with a through hole in the vertical direction, and the lower end of the vertical side of the L-shaped armrest is fixedly connected to a limit cover 15, and the size of the limit cover is larger than the through hole. An emergency stop switch 6 is installed on the horizontal side of the L-shaped armrest, and the emergency stop switch controls the start and stop of the motor.

[0017] The vertical side of the L-shaped handrail 3 is installed in the through hole by sliding up and down. Two rows of grooves are provided on the vertical side of the L-shaped handrail. 4 is a groove. The row refers to the up and down direction. Each row of grooves is composed of multiple grooves. The stroke of the lead screw is greater than or equal to the distance between two adjacent grooves. In this way, stepless adjustment of height can be achieved. The two rows of grooves are 90 degrees apart in the circumferential direction of the vertical side of the L-shaped handrail. A camshaft 13 is rotatably connected to the locking adjustment box on one side of the vertical side of the L-shaped handrail. The axial direction of the camshaft 13 is horizontal. When the camshaft rotates, it can cooperate with the groove to lock the L-shaped handrail. A handle is connected to the camshaft. In this embodiment, the groove is an arc groove. The camshaft is a circular shaft with a notch 131 on one side. The circular shaft and the groove are used in conjunction. The circular shaft rotates around its axis. After passing the notch, the arc surface enters the groove to achieve locking.

[0018] After describing the implementation mode of the utility model in detail, people familiar with the technology can clearly understand that various changes and modifications can be made without departing from the scope and spirit of the above-mentioned patent application. Any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the utility model are within the scope of the technical solution of the utility model, and the utility model is not limited to the implementation mode of the examples given in the specification.

Claims

1. A lifting armrest mechanism on a rehabilitation bed, comprising a mounting box for fixed connection with a bed frame of the rehabilitation bed, characterized in that: A lead screw driven by a motor is installed in the installation box, and the motor is connected to a control switch. A nut is screwed on the lead screw, and two guide rails in the upper and lower directions are fixedly connected in the installation box, and a slider is slidably installed on the guide rail. The slider and the nut are fixedly connected by a connecting plate, and two long holes in the upper and lower directions are opened on the installation box, and a locking adjustment box is arranged outside the installation box. The adjusting locking box is fixedly connected to the connecting plate by bolts passing through the long holes. The locking adjustment box is provided with a through hole in the upper and lower directions, and the vertical side of the L-shaped handrail is slidably installed in the through hole up and down. Two rows of grooves are opened on the vertical side of the L-shaped handrail, and the rows refer to the up and down directions. Each row of grooves is composed of a plurality of grooves, and the two rows of grooves are 90 degrees apart in the circumferential direction of the vertical side of the L-shaped handrail. A camshaft is rotatably connected to the locking adjustment box on one side of the vertical side of the L-shaped handrail, and the axial direction of the camshaft is in the horizontal direction. When the camshaft rotates, it can cooperate with the groove to lock the L-shaped handrail.

2. The lifting armrest mechanism on a rehabilitation bed according to claim 1, characterized in that: An emergency stop switch is installed on the horizontal side of the L-shaped handrail, and the emergency stop switch controls the start and stop of the motor.

3. The lifting armrest mechanism on a rehabilitation bed according to claim 1, characterized in that: The stroke of the lead screw is greater than or equal to the distance between two adjacent grooves.

4. The lifting armrest mechanism on a rehabilitation bed according to claim 1, characterized in that: The lower end of the vertical side of the L-shaped handrail is fixedly connected to a limiting cover, and the size of the limiting cover is larger than the through hole.

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