CN110916419A

CN110916419A - Accompanying bed capable of being automatically folded

Info

Publication number: CN110916419A
Application number: CN201911370659.5A
Authority: CN
Inventors: 杨开建
Original assignee: Jiangsu Luntian Medical Technology Co Ltd
Current assignee: Jiangsu Luntian Medical Technology Co Ltd
Priority date: 2019-12-26
Filing date: 2019-12-26
Publication date: 2020-03-27

Abstract

The invention provides an automatic folding accompanying and nursing bed, which comprises a bed frame, a rotating shaft, a reversible bed board, a rotating transmission unit and a driving unit, wherein the bed board can be hinged on the bed frame in a rotating way around the rotating shaft, and the driving unit is arranged on the bed frame and comprises: the motor is fixed on the base, the worm wheel and the worm are meshed with each other and can be rotatably arranged on the base, an output shaft of the motor is in transmission connection with the worm, and the driving rocker arm is in transmission connection with the worm wheel; the rotation transmission unit includes: the turnover rocker arm is fixedly connected to the rotating shaft, one end of the transmission rod is movably connected to the turnover rocker arm, and the other end of the transmission rod is movably connected to the driving rocker arm. Has the advantages that: the alternating current motor is used as a driving device for automatically turning the accompanying bed, so that the cost of the product is reduced, and the maintenance is convenient.

Description

Accompanying bed capable of being automatically folded

Technical Field

The invention belongs to the technical field of medical accompanying beds, and particularly relates to an automatically foldable accompanying bed.

Background

Most of the existing medical accompanying beds adopt a hand-operated driving mode, a patient can not independently complete posture adjustment of the bed when lying on the accompanying bed, and the patient needs assistance of medical care personnel or nursing personnel, so that the bed is very inconvenient at night. At present, the electric folding accompanying bed also exists in the market, but the electric folding accompanying bed adopts a direct current motor to drive a push rod to push a bed plate to directly complete the lifting of the folding bed along the direction of a motor output shaft, but the popularization of products is limited due to the higher cost of the direct current motor.

Disclosure of Invention

The invention aims to overcome the defects of the prior art and provides an automatic folding accompanying bed, which is realized by the following technical scheme:

but automatic folding bed of accompanying and attending to, including bedstead, pivot, the bed board that can overturn, rotation transmission unit and drive unit, the bed board can wind the pivot articulates with rotating on the bedstead, drive unit locates on the bedstead, include: the motor is fixed on the base, the worm wheel and the worm are meshed with each other and can be rotatably arranged on the base, an output shaft of the motor is in transmission connection with the worm, and the driving rocker arm is in transmission connection with the worm wheel; the rotation transmission unit includes: the turnover rocker arm is fixedly connected to the rotating shaft, one end of the transmission rod is movably connected to the turnover rocker arm, and the other end of the transmission rod is movably connected to the driving rocker arm.

The accompanying bed capable of being automatically folded is further designed in that a point contact switch is arranged on the worm wheel; the rotation center of the worm wheel is provided with a shaft sleeve, and the shaft sleeve is provided with a square insertion hole.

The accompanying bed capable of being automatically folded is further designed in that a shell is arranged on the machine base, and a deflector rod corresponding to the point contact switch is arranged on the shell.

But the further design of automatic folding accompanying and attending to bed lies in, the drive rocking arm comprises square pivot and two first rocking arms, first rocking arm rigid coupling in square pivot is last and two first rocking arm parallel arrangement, and the corresponding position is equipped with the through-hole on two first rocking arms, the transfer line is equipped with the go-between corresponding to the one end of drive rocking arm, the transfer line through the go-between with cross-under bolt assembly realizes being connected with the drive rocking arm in the through-hole.

The accompanying and nursing bed capable of being automatically folded is further designed in that the overturning rocker arm is composed of two second rocker arms, one end of each second rocker arm is fixedly connected to the rotating shaft, the two second rocker arms are arranged in parallel, at least one group of connecting holes are formed in the two second rocker arms in a corresponding position, one end of the transmission rod corresponding to the overturning rocker arm is provided with a through hole, and the transmission rod is connected with the overturning rocker arm through a through bolt in the through hole and the connecting holes.

The accompanying bed capable of being automatically folded is further designed in that a mounting groove for arranging a worm is formed in the machine base, and a hole for penetrating and connecting an output shaft of a motor is formed in the wall of the mounting groove.

The accompanying bed capable of being automatically folded is further designed in that end face bearings are arranged between the two end faces of the worm and the groove walls of the mounting grooves.

The accompanying bed capable of being automatically folded is further designed in that two ends of the rotating shaft are respectively connected with the bed frame through triangular supporting plates.

The accompanying bed capable of being automatically folded is further designed in that the number of the turnable bed boards is two, and the number of the corresponding rotating transmission units and the number of the corresponding driving units are also two.

The accompanying bed capable of being automatically folded is further designed in that the square rotating shaft is a hollow shaft, a cover body is arranged at the top end of the square rotating shaft, the driving unit is supported between two cross rods of the bed frame through a vertical shaft in a penetrating mode, the vertical shaft sequentially penetrates through the shell, the cover body, the square rotating shaft and the machine base, and two ends of the vertical shaft are fixed on the cross rods through bolts.

The invention has the following advantages:

according to the automatically foldable accompanying bed, the transmission structure is changed, and the alternating current motor is used as the driving device for automatically folding the accompanying bed, so that the product cost is reduced, and the maintenance is facilitated; the newly designed transmission structure adopts a transmission speed reduction structure of a worm gear and a worm so as to overcome the defect of poor speed regulation performance of the alternating current motor.

Drawings

Fig. 1 is a schematic structural view of an automatically foldable nursing bed of the present invention.

Fig. 2 is a bottom structure view of the automatically foldable bed for accompanying and attending.

Fig. 3 is a schematic view of the direction a of the structure of the automatically foldable nursing bed in fig. 1.

Fig. 4 is a side view of the structure of the automatically foldable bed in fig. 1.

Fig. 5 is a schematic structural diagram of the driving unit.

Fig. 6 is a side view (with the motor removed) of the schematic construction of the drive unit shown in fig. 5.

Fig. 7 is a bottom schematic view of the side view shown in fig. 6.

Fig. 8 is a schematic view of the drive unit with the housing removed.

Fig. 9 is an exploded view of the driving unit of fig. 8 with the housing removed.

Detailed Description

The technical solution of the present invention is further explained with reference to the specific embodiments and the accompanying drawings.

Referring to fig. 1, the automatically foldable accompanying bed of the present embodiment is mainly composed of a bed frame 1, a rotating shaft 15,

reversible bed boards

11 and 12, a rotation transmission unit 3 and a driving unit 2. The

bed boards

11 and 12 are hinged on the bed frame 1 in a manner of rotating around a rotating shaft 15.

As shown in fig. 5, the driving unit 2 is provided on the bed frame 1, and the driving unit 2 mainly includes: the machine base 20, the motor 25, the worm wheel 22, the worm 24 and the driving rocker 23. The motor 25 is fixed to the housing 20. The worm wheel 22 and the worm 24 are engaged with each other and rotatably provided on the housing 20. An output shaft of the motor 25 is in transmission connection with the worm 24, and the driving rocker 23 is in transmission connection with the worm wheel 22.

As shown in fig. 8, the worm wheel 22 is provided with a touch switch 221, and the touch switch 221 is connected to the control circuit of the motor 25 in communication. The rotation center of the worm wheel 22 is fixedly connected with a shaft sleeve 222, and the shaft sleeve 222 is provided with a square insertion hole, as shown in fig. 9.

Referring to fig. 2 and 6, in the embodiment, a housing 21 is disposed on the base 20, and a shift lever (not shown) corresponding to the point contact switch 221 is disposed on the housing 21, and when a moving piece of the point contact switch contacts the shift lever, an interrupt signal indicating that the worm wheel is rotated in place is generated. The interrupt signals of the two point-contact switches 221 respectively correspond to two position states of the nursing bed with the largest horizontal tiling and turning amplitude, and after receiving the interrupt signals, the control circuit of the motor controls the motor to stop operating according to the position states of the nursing bed corresponding to the interrupt signals. The point-contact switch may be replaced by a hall sensor or an optical sensor, and such alternatives are well known to those skilled in the art and will not be described herein.

As shown in fig. 9, the driving swing arm 23 is composed of a square rotating shaft 232 and two first swing arms 231. The first swing arms 231 are fixedly connected to the square rotating shaft 232, the two first swing arms 231 are arranged in parallel, and through holes are formed in the two first swing arms 231 at corresponding positions. The end of the transmission lever 15 corresponding to the driving rocker 23 is provided with a connection ring 311, see fig. 3. The transmission rod 31 is connected to the driving rocker arm 23 by passing a bolt assembly through the connecting ring 311 and the through hole.

As shown in fig. 2, 3 and 4, the rotation transmission unit 3 mainly includes: the turning rocker 32 and the transmission rod 31. The turning rocker 32 is fixedly connected to the rotating shaft 15, one end of the transmission rod 31 is movably connected to the turning rocker 32, and the other end is movably connected to the driving rocker 23.

The roll-over rocker 32 consists of two second rocker arms. One end of the second rocker arm is fixedly connected to the rotating shaft 15, and the two second rocker arms are arranged in parallel. At least one group of connecting holes are arranged at the corresponding positions on the two second rocker arms. One end of the transmission rod 31 corresponding to the overturning rocker arm 32 is provided with a through hole. The transmission rod 31 is movably connected with the turnover rocker arm through bolts penetrating through the penetrating holes and the connecting holes. In the present embodiment, the driving rod 31 and the second swing arm form an included angle in the horizontal direction through the gap between the through hole and the bolt.

The base 20 is provided with a mounting groove 201 for mounting a worm, and a wall of the mounting groove 201 is provided with a round hole for penetrating through an output shaft of the motor. The worm 24 realizes the end face positioning of the worm 24 in the mounting groove 201 through the penetration of the output shaft of the motor 25. End face bearings are arranged between the two end faces of the worm 24 and the groove walls of the mounting groove, and axial positioning of the worm 24 in the mounting groove 201 is achieved. The cross section of the through hole of the worm 24 and the output shaft of the motor 25 and the output shaft of the motor is a corresponding major arc arch.

In this embodiment, two ends of the rotating shaft 15 are respectively connected to the bed frame 1 through the triangular supporting plates 14.

In this embodiment, the number of the turnable bed boards is two, that is, the bed board 11 and the bed board 12, and the number of the corresponding rotation transmission units 3 and the corresponding driving units 2 is also two.

Further, the square rotating shaft 232 of the present embodiment is a hollow shaft, see fig. 9. The top end of the square rotating shaft 232 is provided with a cover 233. The driving unit 2 is supported between the two rails of the frame by passing a vertical shaft therethrough, see fig. 1 and 3. The vertical shaft sequentially passes through the casing 21, the cover 233, the square rotating shaft 232 and the base 20, two ends of the vertical shaft are fixed on the cross bar through bolts, and the base 20 is supported on the cross bar and horizontally positioned through the vertical shaft.

The accompanying bed capable of being automatically folded in the embodiment adopts the alternating current motor as the driving device for automatically folding the accompanying bed by changing the transmission structure, so that the product cost is reduced, and the maintenance is convenient; the new transmission structure adopts a worm gear and worm transmission speed reduction structure to overcome the defect of poor speed regulation performance of the alternating current motor.

The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, several modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.

Claims

1. An automatically foldable escort bed, characterized in that it comprises a bed frame, a rotating shaft, a reversible bed board, a rotation transmission unit and a drive unit, and the bed board can be hinged on the bed frame rotatably around the rotary shaft, The drive unit is arranged on the bed frame and includes a machine base, a motor, a worm gear, a worm and a drive rocker arm, the motor is fixed on the machine base, and the worm gear and the worm are rotatably arranged on the machine base. , the output shaft of the motor is connected with the worm drive, and the drive rocker arm is connected with the worm gear drive; the rotation transmission unit includes: a flip rocker arm and a transmission rod, the flip rocker arm is fixed on the rotation shaft, and the transmission rod is One end is movably connected to the turning rocker arm, and the other end is movably connected to the driving rocker arm.

2 . The automatically foldable escort bed according to claim 1 , wherein the worm gear is provided with a touch switch; the rotation center of the worm gear is provided with a shaft sleeve, and the shaft sleeve is provided with a square socket hole. 3 .

3 . The automatically foldable escort bed according to claim 1 , wherein the base is provided with a casing, and the casing is provided with a lever corresponding to the touch switch. 4 .

4. The automatically foldable escort bed according to claim 1, wherein the driving rocker arm is composed of a square rotating shaft and two first rocker arms, and the first rocker arm is fixed on the square rotating shaft and The two first rocker arms are arranged in parallel, the corresponding positions of the two first rocker arms are provided with through holes, and one end of the transmission rod corresponding to the driving rocker arm is provided with a connecting ring, and the transmission rod passes through the connecting ring and the through hole. The connecting bolt assembly realizes the connection with the driving rocker arm.

5 . The automatically foldable escort bed according to claim 1 , wherein the flip rocker arm consists of two second rocker arms, one end of the second rocker arm is fixed on the rotating shaft and the two second rocker arms are fixed on the rotating shaft. 6 . The two rocker arms are arranged in parallel, and at least one set of connecting holes is provided on the corresponding positions of the two second rocker arms. One end of the transmission rod corresponding to the flip rocker arm is provided with a penetration hole, and the transmission rod is connected with the said transmission rod through the penetration hole. Connecting bolts in the connecting hole realizes the connection with the turning rocker arm.

6 . The automatically foldable escort bed according to claim 1 , wherein a mounting groove for arranging a worm is provided on the base, and a groove wall for penetrating the motor output shaft is provided on the groove wall of the mounting groove. 7 . hole.

7 . The self-foldable escort bed according to claim 1 , wherein end-face bearings are provided between the two end faces of the worm and the groove wall of the installation groove. 8 .

8 . The automatically foldable escort bed according to claim 1 , wherein both ends of the rotating shaft are respectively connected with the bed frame through triangular support plates. 9 .

9 . The automatically foldable escort bed according to claim 1 , wherein the number of the reversible bed boards is two, and the corresponding rotation transmission units and driving units are also two. 10 .

10. The self-foldable escort bed according to claim 4, wherein the square shaft is a hollow shaft, the top of the square shaft is provided with a cover, and the drive unit is supported on the bed by connecting a vertical shaft. Between the two horizontal bars of the frame, the vertical shaft passes through the casing, the cover, the square rotating shaft and the machine base in sequence, and both ends of the vertical shaft are fixed on the horizontal bars by bolts.