CN216061040U - Shifting device - Google Patents

Abstract

The utility model provides a shifting device which is used for moving patients in different indoor scenes, and comprises a brake assembly, a lifting device, a moving base and a seat, wherein the seat is adjusted to be higher than the moving base through the lifting device; the moving base comprises a bottom frame and a plurality of roller members, and the brake assembly brakes the displacement device through the brake roller members; the chair comprises a chair face part, a backrest part and a foot support part, wherein the backrest part and the foot support part are arranged at two ends of the chair face part, and the angle between the backrest part and the chair face part is adjusted through an adjusting component. The utility model achieves the function of adjusting the angle of the seat, not only diversifies the function of the shifting device, but also adjusts the angle of the seat to correspond to an indoor scene, thereby improving the convenience and the shifting efficiency of the patient, reducing the labor intensity of nursing personnel for the patient, reducing the nursing burden of the nursing personnel, enabling the patient to sit on the seat in the most comfortable posture and reducing the psychological burden of the patient.

Description

Shifting device

Technical Field

The embodiment of the utility model relates to the technical field of medical instruments, in particular to a shifting device.

Background

The shifting device is mainly used indoors, and can shift patients who are disabled by legs and feet due to disabilities or half paralysis in different indoor scenes, so that physical burden of nursing personnel during manual shifting is relieved, and risk of secondary injury caused by the patients during the manual shifting process can be greatly reduced. Because the use object of the shifting device is a patient with leg disability caused by disability or half paralysis and the traveling ability is poor, the design of the shifting device should be humanized, thereby not only reducing the nursing burden of nursing personnel, but also ensuring the patient to feel comfortable when in use and avoiding increasing the psychological burden of the patient.

However, the shifting device in the current market is generally single in function, only plays a role of shifting, and is poor in operability, so that the labor intensity of nursing staff for caring patients is greatly increased, and the nursing burden of the nursing staff is increased. In addition, the existing shifting device is not humanized enough in design, and the structural design of the shifting device cannot be compatible and adapted to the most comfortable postures of different patients, so that the problems of ache, poor blood circulation and the like can be caused when the patients are used for a long time, and the psychological burden of the patients is increased.

SUMMERY OF THE UTILITY MODEL

The embodiment of the utility model provides a novel shifting device aiming at the problems of single function, poor operability, insufficient humanization and incapability of being compatible with the most comfortable posture of a patient of the existing shifting device.

The technical solution of the embodiment of the present invention is to provide a shifting device for moving patients in different indoor scenes, wherein the shifting device comprises a brake assembly, a lifting device, and a moving base and a seat respectively fixed at two ends of the lifting device, and the seat is adjusted by the lifting device to a height relative to the moving base; the moving base includes a base frame, and a plurality of roller members respectively fitted to the bottom of the base frame, and the brake assembly brakes the displacement device by braking the roller members; the seat comprises a seat surface part, and a backrest part and a foot support part which are fixedly connected to two ends of the seat surface part through adjusting components respectively, and the angles between the backrest part and the seat surface part are adjusted through the adjusting components respectively.

Preferably, the lifting device comprises a lifting component, a scissor lifting frame and a driving component, the bottom end of the scissor lifting frame is fixed with the mobile base, the top end of the scissor lifting frame is fixed with the seat, the lifting device adjusts the pressure in the lifting component by pressing the driving component in a first mode so as to drive the seat to ascend, and adjusts the pressure in the lifting component by pressing the driving component in a second mode so as to drive the seat to descend.

Preferably, the brake assembly includes a plurality of elastic members respectively corresponding to the plurality of roller members, each of the roller members is assembled to the bottom of the base frame by one elastic member, a plurality of brake members are respectively fixedly mounted to the bottom of the base frame, and the brake members release the roller members under the elastic force of the elastic members, the base frame drives the plurality of brake members to press against the plurality of roller members against the elastic force of the elastic members when the seat load exceeds a preset value, so as to brake the plurality of roller members.

Preferably, each brake component comprises a brake pad and an elastic part, the brake pad is assembled and fixed on the bottom surface of the underframe through the elastic part, and each brake pad is positioned in the vertical projection area of the corresponding roller component under the elastic force of the elastic part;

the brake subassembly still includes the spool, assembles and is in brake cable in the spool and be used for the drive the brake cable is in gliding actuation handle in the spool, wherein: the first end of the brake cable is fixedly connected with the driving handle, the second end of the brake cable is fixedly connected with the plurality of brake pads of the brake member, the brake cable is driven by the driving handle to pull the plurality of brake pads to move towards the direction far away from the roller member, so that the plurality of brake pads release the corresponding roller member.

Preferably, the adjusting assembly comprises a first adjusting assembly arranged between the chair surface part and the backrest part and a second adjusting assembly arranged between the chair surface part and the footrest part, the backrest part is adjusted to the angle between the chair surface part and the backrest part by adjusting the first adjusting assembly, and the footrest part is adjusted to the angle between the chair surface part and the footrest part by adjusting the second adjusting assembly.

Preferably, the first adjusting assembly comprises a first connecting rod fixedly connected with the seat surface and a fixed seat fixedly connected with the backrest, and the first connecting rod is assembled to the fixed seat through a pivot; and a locking component is arranged in the fixed seat, and the first connecting rod is limited to rotate relative to the pivot by the locking component.

Preferably, the fixing base comprises a base, and the first connecting rod is assembled to the base through a pivot;

one end of the first connecting rod, which is arranged on the base, is provided with a convex arc-shaped peripheral surface which takes the pivot as the center of a circle, and the convex arc-shaped peripheral surface is provided with a plurality of first gear teeth; the locking component comprises a gear seat and an elastic piece, the gear seat comprises a concave arc-shaped peripheral surface corresponding to the convex arc-shaped peripheral surface, and a plurality of second gear teeth are arranged on the concave arc-shaped peripheral surface;

the gear seat is assembled to the base in a sliding manner, the elastic piece is assembled between the base and the gear seat, and pushes the gear seat through elastic restoring force, so that the second gear teeth are meshed with the first gear teeth, and the first connecting rod is limited to rotate relative to the pivot.

Preferably, the first adjusting assembly comprises an operating handle and a pull rope, the gear seat is provided with a convex column, the operating handle is connected with the convex column through the pull rope, and the operating handle pulls the pull rope to enable the second gear teeth of the gear seat to be separated from the first gear teeth of the first connecting rod.

Preferably, the second adjusting assembly includes a ratchet mechanism, a connecting member fixed on the chair surface portion, and a second connecting rod having a head end pivotally connected to the connecting member, and the foot rest portion is fixed on the second connecting rod and connected to the chair surface portion through the second connecting rod and the connecting member;

the ratchet mechanism comprises a ratchet member fixed at the head end of the second connecting rod, and a pawl member and a compression spring which are installed on the connecting member, and the compression spring is positioned between the pawl member and the connecting member; the pawl component is pivotally connected and fixed with the connecting component through a pin shaft, the claw part of the pawl component is pressed on the ratchet component under the action of the elastic force of the compression spring, and when the second connecting rod rotates towards the direction far away from the top surface of the chair surface part, the claw part of the pawl component is clamped on the tooth part of the ratchet component;

the back surface of the claw part of the pawl component is an inclined surface, and when the second connecting rod rotates towards the top surface of the chair surface part, the tooth part of the ratchet component pushes against the inclined surface so as to drive the pawl component to extrude the compression spring and drive the claw part to be separated from the tooth part of the ratchet component.

Preferably, the seat comprises an armrest, the armrest is positioned at one end of the seat part close to the backrest part, and a third adjusting component for driving the armrest to rotate relative to the seat part is arranged between the armrest and the seat part; the shifting device enables the free ends of the armrests and the foot supports to be respectively supported to the ground by adjusting the second adjusting assembly, the third adjusting assembly and the lifting device.

The shifting device of the embodiment of the utility model has the following beneficial effects: by arranging the brake assembly and the lifting device, the shifting function and the braking function of the shifting device can be effectively achieved, so that the shifting device can reliably correspond to different indoor scenes, and shifting of patients among different indoor scenes is realized; in addition, the shifting device can be used for adjusting the angles between the backrest part and the foot support part as well as the chair surface part by arranging the adjusting component, thereby achieving the angle adjusting function of the chair, not only diversifying the functions of the shifting device, but also adjusting the angle of the chair to correspond to an indoor scene, improving the convenience and shifting efficiency of shifting the patient, avoiding the injury caused by difficult shifting, improving the humanized design, simultaneously lightening the labor intensity of nursing personnel for caring the patient and reducing the nursing burden of the nursing personnel; because the angle between the backrest part, the foot support part and the chair surface part is adjustable, the chair can be adapted to the body extension angle of the patient, so that the patient can sit on the chair in the most comfortable posture, the comfort is improved, the body joint compression caused by long-time use of the patient is effectively avoided, the problems of ache, poor blood circulation and the like caused by long-time use are solved, and the psychological burden of the patient is further reduced.

Drawings

Fig. 1 is a schematic structural diagram of a displacement device provided in an embodiment of the present invention;

FIG. 2 is a schematic side-view of a displacement device according to an embodiment of the present invention;

fig. 3 is a schematic structural diagram of a scissor type crane of the displacement device provided by the embodiment of the utility model;

FIG. 4 is a schematic structural diagram of a displacement device according to another embodiment of the present invention;

FIG. 5 is a schematic side view of a displacement device according to another embodiment of the present invention;

FIG. 6 is a schematic diagram illustrating a variation of the shifting apparatus according to an embodiment of the present invention;

FIG. 7 is a schematic structural diagram of a first adjustment assembly of the displacement apparatus provided in an embodiment of the present invention;

FIG. 8 is a schematic diagram of a partial structure of a displacement device provided in an embodiment of the present invention;

FIG. 9 is a schematic view of a first adjustment assembly of a displacement apparatus according to another embodiment of the present invention;

FIG. 10 is a schematic structural view of a second adjustment assembly of the displacement apparatus provided in accordance with an embodiment of the present invention;

FIG. 11 is a schematic diagram of a fourth adjustment assembly of the displacement apparatus provided in the embodiments of the present invention;

fig. 12 is a schematic diagram of another variation state of the shifting apparatus according to the embodiment of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the utility model and are not intended to limit the utility model.

Fig. 1 is a schematic operation diagram of a displacement device provided in an embodiment of the present invention, which can be applied to the technical field of medical equipment, such as a special displacement chair for a patient with disability or half paralysis causing leg and foot disability, for transferring the patient in different indoor scenes.

The shifting device in this embodiment includes a brake assembly, a lifting device 2, a movable base 3 and a seat 4, wherein the movable base 3 and the seat 4 are respectively and fixedly connected to two ends of the lifting device 2, and the seat 4 is driven by the lifting device 2 to adjust the height relative to the movable base 3, i.e. the lifting and lowering functions of the seat 4 are realized.

Further, the movable base 3 includes a bottom frame 31 and a plurality of roller members 32, the plurality of roller members 32 are respectively assembled to the bottom of the bottom frame 31, and the plurality of rollers realize the transfer of the displacement device, thereby achieving the displacement function, so as to transfer the patient to different indoor scenes. Specifically, the brake assembly corresponds to the plurality of roller members 32, and achieves a braking function of the displacement device by braking (e.g., clasping) the plurality of roller members 32.

The seat 4 of the embodiment includes a seat surface portion 41, a backrest portion 42 and a footrest portion 43, and the backrest portion 42 and the footrest portion 43 are fixedly connected to both ends of the seat surface portion 41 by an adjusting assembly, and the angle between the backrest portion 42 and the seat surface portion 41 and the angle between the footrest portion 43 and the seat surface portion 41 are adjusted by the adjusting assembly, thereby achieving the angle adjusting function of the seat 4.

The shifting device can effectively achieve the shifting function and the braking function of the shifting device by arranging the braking component and the lifting device 2, so as to ensure that the shifting device can reliably correspond to different indoor scenes and realize the shifting of patients among different indoor scenes. In addition, the shifting device is also provided with an adjusting component which can be used for adjusting the angles between the backrest part 42 and the foot support part 43 as well as the chair surface part 41, thereby achieving the angle adjusting function of the chair 4, not only diversifying the functions of the shifting device, but also adjusting the angle of the chair 4 to correspond to an indoor scene, improving the convenience and shifting efficiency of shifting patients, avoiding damage caused by shifting difficulty and improving humanized design. The patient can be conveniently shifted between the shifting device and the indoor scene, so that the labor intensity of nursing personnel for nursing the patient can be greatly reduced, frequent supporting or supporting is not needed, and the nursing burden of the nursing personnel is effectively reduced.

In addition, because the angles between the backrest part 42 and the footrest part 43 and the seat surface part 41 are adjustable, the seat 4 can be adapted to the body extension angle of the patient, so that the patient can sit on the seat 4 in the most comfortable posture, the comfort is improved, the body joint compression caused by long-time use of the patient is effectively avoided, the problems of ache, poor blood circulation and the like caused by long-time use are solved, and the psychological burden of the patient is further reduced.

As shown in fig. 2, the lifting device 2 includes a lifting component 21 and a driving component 23, and the driving component 23 is adapted and connected to the lifting component 21. In operation, when the driving assembly 23 is pressed in the first manner, the pressure in the lifting assembly 21 may be adjusted (e.g., the pressure in the lifting assembly 21 may be increased), and the lifting assembly 21 may drive the seat 4 to rise. When the driving assembly 23 is pressed in the second manner, the pressure in the lifting assembly 21 can be adjusted (e.g., the pressure in the lifting assembly 21 is reduced), and the lifting assembly 21 drives the seat 4 to descend (or simultaneously lowers the seat 43 by the patient's body weight).

Of course, in practical applications, the output end of the lifting assembly 21 (specifically, the end far away from the lifting device 2) may be directly connected to the seat 4, or may be fixedly connected to the seat 4 through a transmission mechanism (e.g., the scissor lift 22) (i.e., the seat 4 is driven by the transmission mechanism to lift).

The specific implementation manners of the first mode and the second mode can be determined according to actual conditions; for example, the first way is normal pressing, i.e., pressing the driving member 23 for a short time to pressurize the elevating member 21; the second mode is to depressurize the lifting unit 21 by activating a reset switch of the lifting unit 21 (the reset switch is a unit for returning the lifting unit 21 to its original state, for example, an elastic depressurizing unit that opens and closes a communication between the lifting unit 21 and the outside or another member) when the driving unit 23 is continuously depressed for a predetermined time (for example, 3 seconds).

Or the first mode is common pressing; the second way is that the lifting assembly 21 is driven to reach a preset state (for example, reach a preset height), that is, the lifting assembly 21 is driven by the driving assembly 23 to reach the preset state and then the reset switch is triggered; for example, a flexible pulling member is disposed between the lifting portion of the lifting assembly 21 and the reset switch, the lifting portion of the lifting assembly 21 lifts to drive the flexible pulling member, and when the lifting portion reaches a preset height, the flexible pulling member pulls to trigger the reset switch. Of course, in practical applications, the second mode may also be set by using an inductor or a timer.

Above-mentioned shifter is through setting up lifting unit 21 and drive assembly 23, adjust the seat 4 height with the pressure in the mode adjustment lifting unit 21 of pressing drive assembly 23, realize the rising or the decline of seat 4, this simple structure, and the disease is in also can carry out altitude mixture control on seat 4, need not adjustment in advance or help the disease to briefly leave seat 4, the efficiency of altitude mixture control has both been improved, again can the physical strength burden of greatly reduced nursing staff and disease, the practicality of use is improved, make above-mentioned shifter more have market competition simultaneously.

Because the patient need not to leave seat 4 during the regulation operation, and has adopted the mode of adjustment pressure to carry out altitude mixture control to not only can make the rising or the decline of seat 4 more reliable steady, can also make the height that corresponds indoor scene of seat 4 more accurate simultaneously, avoid producing the difference in height, improve the regulation precision, prevent that the patient from hitting the injury accident because of the friction that the difference in height caused at the aversion in-process, reduce the risk hidden danger.

In addition, the shifting device presses the driving component 23 in the first mode and the second mode to realize the ascending or descending of the seat 4, thereby effectively reducing the operation difficulty, avoiding the occurrence of misoperation and improving the use safety. Of course, in order to reduce the probability of malfunction, the first and second modes should have operational differences.

Referring to fig. 3, in an embodiment of the present invention, the lifting device 2 further includes a scissor lift 22, a bottom end of the scissor lift 22 is fixed to the base frame 31, and a top end of the scissor lift 22 is fixed to the seat 43. The lifting component 21 is connected with the scissor type lifting frame 22, and the lifting component 21 drives the scissor type lifting frame to move under the action of the driving component 23 so as to drive the seat 4 to ascend or descend.

Further, the scissor-type crane 22 includes a transmission main body formed by stacking at least one group of arm supports arranged in an X-shape, and the driving assembly 23 and the lifting assembly 21 adjust the height of the seat 4 relative to the base frame 31 by adjusting the angle of the arm supports.

In an embodiment of the present invention, the driving assembly 23 includes a driving piston and a driving leg 231, wherein the driving leg 231 is movably connected to the lifting device 2 (for example, one end of the driving leg 231 is pivotally connected to the lifting device 2 through a pin), and the driving leg 231 is pivotally connected to one end of the driving piston. Therefore, the lifting device 2 can press the driving assembly 23 in the first mode or the second mode by the driving foot rod 231, so as to adjust the pressure in the lifting assembly 21, which is beneficial to improving the convenience of operation. Particularly, an elastic restoring member is disposed between the driving leg 231 and the driving assembly 23, so that when the driving leg 231 is pressed to drive, the driving leg 231 can restore to the original position under the elastic force of the elastic restoring member, thereby achieving automatic restoration and reducing the difficulty of driving operation.

In addition, the lifting assembly 21 of the present embodiment includes a lifting piston, a driving cylinder, a hydraulic cylinder, and a reserve cylinder for storing oil, the reserve cylinder being communicated with the driving cylinder through a reverse valve, the driving cylinder being communicated with the hydraulic cylinder through a reverse valve, and at least a portion of the lifting piston being installed in the hydraulic cylinder. And, at least a part of the driving piston is installed in the driving cylinder, and when the driving foot bar 231 is pressed in a first manner, the driving piston makes a reciprocating motion, so that the oil in the oil storage cylinder flows into the hydraulic cylinder through the driving cylinder, pressurizes the hydraulic cylinder to push the lifting piston to extend, and drives the seat 4 to rise.

In another embodiment of the present invention, the lifting device 2 includes a switch assembly and a conduit communicating the hydraulic cylinder and the reserve cylinder, and the switch assembly is blocked in the conduit. Thus, when the driving unit 23 is pressed in the second mode, the piston is driven to drive the opening and closing unit to open the pipe, so that the oil in the hydraulic cylinder flows into the reservoir cylinder through the pipe, thereby depressurizing the hydraulic cylinder.

As shown in connection with fig. 4, the scissor lift 22 of the present embodiment includes two transmission bodies corresponding to both sides of the seat 4.

Certainly, in practical application, the number of the arm supports of the transmission main body of the scissor-type lifting frame 22 can be specifically determined according to practical situations, for example, the arm supports are formed by overlapping one group, two groups or three groups of arm supports, and preferably one group of arm supports is adopted, so that the structural design can be effectively simplified.

In order to make the seat 4 more stable in the ascending or descending process, the lifting device 2 can be provided with a guide mechanism for limiting the seat 4; for example, a vertically arranged guide rod is arranged below the seat 4, a limit ring sleeve matched with the guide rod is arranged above the fixed part of the lifting device 2, the guide rod is inserted into the limit ring sleeve, and the limit ring sleeve is used for limiting and guiding the guide rod and the seat 4, so that the stress of the scissor-type lifting frame 22 in the transverse direction is reduced, and the stability and the reliability are improved.

In another embodiment of the present invention, the lifting assembly 21 is disposed along the vertical direction, the top end of the lifting assembly 21 is fixedly connected to the seat 4, and the bottom end of the lifting assembly 21 is fixedly connected to the bottom frame 31, so that the lifting assembly 21 directly drives the seat 4 to ascend and descend under the driving of the driving assembly 23, and the structure is simple and reasonable.

As shown in fig. 5, the brake assembly includes a plurality of elastic members 12 and a plurality of brake members 11 respectively corresponding to the plurality of roller members 32, and each roller member 32 is assembled to the bottom of the chassis 31 by one elastic member 12; for example, a plurality of roller members 32 are fixed to the bottom of the base frame 31 in a vertically slidable manner, and each roller member 32 is connected to the base frame 31 through an elastic member 12, i.e., the base frame 31 is supported and moved by the elastic member 12 and the plurality of roller members 32, so that when the base frame 31 is subjected to a vertical force, the base frame 31 can slide on the plurality of roller members 32 by overcoming the elastic force of the elastic member 12. The sliding connection mode of the plurality of roller members 32 and the bottom frame 31 can be specifically set according to the actual situation; for example, a shaft and bore fit, or a sliding connection by means of a sliding member.

Further, the plurality of brake members 11 are fixedly mounted to the bottom of the chassis 31, respectively, and the plurality of brake members 11 release the roller members 32 when the chassis 31 slides to a first position of the roller members 32 (of course, the first position may also be a height section), and press and hug the roller members 32 when the chassis 31 slides to a second position of the roller members 32 (of course, the second position may also be a height section). And, the elastic member 12 is disposed between the roller member 32 and the bottom frame 31 to limit the bottom frame 31 at the first position of the roller member 32, and when the seat 4 bears a load exceeding a preset value, the bottom frame 31 can slide from the first position to the second position of the roller member 32 by overcoming the elastic force of the elastic member 12, so that the plurality of brake members 11 press and clasp the roller member 32, thereby completing the braking operation of the plurality of roller members 32. In practical applications, the preset value of the load bearing can be determined according to practical situations, and the preset value can be adjusted by replacing the elastic member 12.

Above-mentioned from locking-type shifter is through being cooperated by brake subassembly and elastic component 12, can be when the 4 bearing of seat surpasss the predetermined value, drive a plurality of brake components 11 by chassis 31 and remove, thereby make a plurality of brake components 11 hold roller member 3213 tightly, realize the brake self-locking function of bearing mode, not only need not manual start brake like this, the operation convenience is improved, make and transfer efficiency higher, simultaneously can also effectively solve the problem that negligence forgets to start the brake, the emergence of shifter atress removal and collision tumble accident has been avoided, safety in utilization factor has been improved greatly.

In one embodiment of the brake assembly, each brake member 11 includes a brake pad 111 and an elastic member 112 (e.g., a compression spring), the brake pad 111 is assembled and fixed to the bottom surface of the chassis 31 through the elastic member 112, so that the elastic member 112 can play a role in buffering the brake pad 111, and the brake pad 111 has a high elastic buffering capacity, so that the brake pad 111 can buffer and retreat when being pressed and clasped on the roller member 32, thereby avoiding damage caused by collision, and further making the structural design of the brake assembly more reliable and reasonable. Of course, in practical applications, the brake pad 111 may be slidably connected to the chassis 31 by providing a guide member, which can effectively improve the stability and reliability of the brake pad 111.

Moreover, in order to ensure that the chassis 31 can reliably drive the brake pads 111 to hug the roller members 32 when bearing a load, each brake pad 111 should be located in the vertical projection area of the corresponding roller member 32 in a natural state (i.e. under the elastic force of the elastic member 112).

In addition, the brake assembly further includes a spool, a brake cable 13 and a driving handle 14, wherein the brake cable 13 is slidably coupled to the spool, and the driving handle 14 is used for driving the brake cable 13 so that the brake cable 13 can slide in the spool for performing a driving operation for opening or releasing the brake. Specifically, a first end of the brake cable 13 is fixedly connected with the driving handle 14, a second end of the brake cable 13 is fixedly connected with the brake pads 111 of the plurality of brake members 11, when the driving handle 14 is operated, the brake cable 13 slides in the cable tube in the direction away from the brake members 11, and synchronously drives the brake pads 111 to move in the direction away from the corresponding roller members 32, so that even when the bearing of the seat 4 reaches a preset value, the brake pads 111 cannot be pressed to be tightly held on the roller members 32, the brake fails, and then the corresponding roller members 32 are released, at this time, the caregiver can push the seat 4 to implement the transfer operation of the patient between different indoor scenes.

Specifically, each roller member 32 includes a rotating wheel and a connecting rod having one end pivotally connected to the rotating wheel. Specifically, the chassis 31 includes a frame portion, which is provided with a plurality of through holes adapted to the connecting rods and vertically disposed, and each roller member 32 is slidably connected to the chassis 31 in such a manner that the connecting rods are fitted to the through holes, i.e., each roller member 32 is vertically slidable on the chassis 31.

Because the displacement device of this embodiment utilizes seat 4 bearing to realize the braking, consequently makes a plurality of gyro wheel components 32 along vertical sliding connection on chassis 31, can effectively improve structural design's rationality, and then reduces the atress of other directions, avoids long-time friction to cause wearing and tearing or cause the slip card to die.

The roller members 32 of this embodiment are mounted below the bracket portion, and the free end of the connecting rod of each roller member 32 extends to the upper portion of the bracket portion through the through hole. And, the elastic member 12 is a tension spring, and a first end of the tension spring is fixed to the free end of the connecting rod and a second end of the tension spring is fixed to the bracket portion. Thus, the chassis 31 is in the first position of the roller member 32 under the action of the tension spring; when the load of the seat 4 reaches a preset value, the chassis 31 overcomes the elasticity of the tension spring and stretches the tension spring, so as to drive the plurality of brake components 11 to move downwards to press and tightly hold the rotating wheels of the plurality of roller components 32, thereby realizing brake.

As shown in fig. 6, the adjustment assembly of the present embodiment includes a first adjustment assembly 5 and a second adjustment assembly 6, and the first adjustment assembly 5 and the second adjustment assembly 6 are provided on the seat 4. The first adjusting component 5 and the second adjusting component 6 can be both driving mechanisms, and the specific structure can be determined according to actual conditions, such as a gear transmission mechanism, a ratchet structure and the like.

Specifically, the first adjusting assembly 5 is located between the seat surface portion 41 and the backrest portion 42, and the backrest portion 42 is driven by the first adjusting assembly 5 to perform a rotation movement relative to the seat surface portion 41, so as to achieve an angle adjusting function between the backrest portion 42 and the seat surface portion 41. In addition, the second adjusting component 6 is located between the seat surface portion 41 and the leg rest portion 43, and the leg rest portion 43 is driven by the second adjusting component 6 to rotate relative to the seat surface portion 41, so as to achieve the function of adjusting the angle between the leg rest portion 43 and the seat surface portion 41.

Preferably, the backrest portion 42 is fixedly connected to the seat portion 41 through the first adjusting assembly 5, and the footrest portion 43 is fixedly connected between the surfaces through the second adjusting assembly 6, thereby simplifying the structural design. Certainly, in practical application, the backrest portion 42 may also be pivotally connected and fixed to the seat portion 41 by a pin, and the footrest portion 43 may be pivotally connected and fixed to the seat portion 41 by a pin, which is beneficial to improving the connection strength between the backrest portion 42 and the footrest portion 43 and the seat portion 41, and simultaneously, the stress of the first adjusting component 5 and the second adjusting component 6 may also be reduced, so as to reduce the connection burden of the first adjusting component 5 and the second adjusting component 6, and ensure the stability and reliability of the whole structure.

As shown in fig. 7, the first adjusting assembly 5 of the present embodiment includes a first connecting rod 51 and a fixed seat (preferably made of a metal material), wherein the first connecting rod 51 is fixedly connected with the seat surface 41, the fixed seat is fixedly connected with the backrest 42, and the first connecting rod 51 is assembled to the fixed seat through a first pivot 53, so as to realize the connection between the backrest 42 and the seat surface 41. Specifically, a locking member 54 is disposed in the fixing base, the locking member 54 corresponds to the first connecting rod 51 mounted on the fixing base, and when operating, the first connecting rod 51 is restricted from rotating relative to the first pivot 53 by the locking member 54, so as to lock the first adjusting assembly 5.

In practical applications, the locking manner of the locking member 54 and the first adjusting assembly 5 can be determined according to practical situations, such as snap locking, plug locking, and the like; the structure of the locking member 54 is preferably arranged in accordance with the structure of the first adjustment assembly 53.

In one embodiment of the present invention, the fixing base includes a base 52, a first connecting rod 51 fixedly connected to a first pivot 53 through an end portion thereof and installed to the base 52, and the end portion of the first connecting rod 51 installed to the base 52 has an outer circumferential surface protruding outward. Specifically, the outer peripheral surface is a convex arc shape with the first pivot 53 as the center, and the outer peripheral surface of the convex arc shape has a plurality of first teeth 511 (as shown in fig. 7). Of course, in other embodiments, the first cog 511 may be provided separately from the first connecting rod 51, and then the first cog 511 is fixed to the end of the first connecting rod 51 by assembling.

Further, the locking member 54 includes a hook component which is fitted with the first cog 511, and the locking member 54 restricts the rotation of the first connecting rod 51 relative to the first pivot 53 by fitting the hook component into the first cog 511, thereby locking the first adjusting component 5.

Specifically, the hook assembly includes a first hook 541, a first elastic member 542, a second pivot 543, a second hook 544, a second elastic member 545 and a third pivot 546, wherein the first hook 541 is mounted on the base 52 through the second pivot 543, and the first hook 541 is embedded into the first gear 511 under the action of the first elastic member 542, and prevents the first connecting rod 51 from rotating around the first direction. The first elastic member 542 is preferably a torsion spring, and is fitted on the first pivot 53, and one end of the torsion spring is connected to the base 52 and the other end of the torsion spring is connected to the first hook 541, so that the torsion spring provides a constant spring force to the first hook 541, so that the hook portion of the first hook 541 can be hooked to the first gear tooth 511. Of course, the first elastic member 542 may be a compression spring, which greatly increases the difficulty of assembling operation and is not easy to assemble.

The first hook 541 is preferably an inclined surface on a surface opposite to the hook portion, so that when the first connecting rod 51 rotates in a direction opposite to the first direction, the first hook 541 can push against the inclined surface, so that the first hook 541 extrudes the first elastic member 542 and retracts, that is, the first connecting rod 51 is prevented from being limited by the first hook 541 when rotating in the direction opposite to the first direction by adopting a ratchet matching mode, which is favorable for reducing the difficulty of adjustment operation.

In addition, the second hook 544 is mounted on the base 52 through the third pivot 546, and the second hook 544 is embedded into the first gear 511 by the second elastic member 545 and prevents the first connecting rod 51 from rotating around the second direction. The second elastic member 545 is preferably a torsion spring, and is mounted on the second pivot 543, and one end of the torsion spring is connected to the base 52, and the other end of the torsion spring is connected to the second hook 544, so that the torsion spring provides a constant spring force to the second hook 544, so that the hook of the second hook 544 can be hooked to the first gear tooth 511.

Moreover, the surface of the second hook 544 opposite to the hook portion thereof is preferably an inclined surface, so that when the first connecting rod 51 rotates in the direction opposite to the second direction, the inclined surface can be pushed by the second hook 544, so that the second hook 544 presses the second elastic member 545 and retracts, that is, the ratchet matching manner is also adopted, and the first connecting rod 51 is prevented from being limited by the second hook 544 when rotating in the direction opposite to the second direction, so as to match the first hook 541, thereby reducing the manual operation steps and improving the operation convenience.

In practical applications, the first direction and the second direction are opposite, that is, the direction opposite to the first direction is the second direction, and the direction opposite to the second direction is the first direction, so that the second hook 544 can control the forward rotation and the directional rotation of the first connecting rod 51 by cooperating with the first hook 541. When the first hook 541 and the second hook 544 are both inserted into the first gear 511, the first connecting rod 51 cannot rotate, i.e., the first direction and the second direction are both limited. When the first hook 541 is opened, the first hook 541 is disengaged from the first gear 511, and the first connecting rod 51 can rotate around the first direction, so as to drive the backrest 42 to rotate around the first direction to adjust the angle between the backrest and the seat 41. When the second hook 544 is opened, so that the second hook 544 is separated from the first gear 511, the second connecting rod 63 can rotate around the second direction, and further the backrest 42 is driven to rotate around the second direction to adjust the angle between the backrest and the seat 41.

As shown in fig. 8, the first adjusting assembly 5 of the present embodiment further includes a first operating handle 55, a first pulling rope 56, a second operating handle 57 and a second pulling rope, wherein two ends of the first pulling rope 56 are respectively connected to the first hook 541 and the first operating handle 55, two ends of the second pulling rope are respectively connected to the second hook 544 and the second operating handle 57, and the first operating handle 55 pulls the first pulling rope 56 to make the first hook 541 separate from the first gear 511 of the first connecting rod 51 by overcoming the elastic restoring force of the first elastic element 542, that is, opens the first hook 541, so that the backrest 42 can rotate around the first direction to adjust the angle between the backrest 42 and the seat surface 41. In addition, the second operating handle 57 opens the second hook 544 by pulling the second pull cord to disengage the second hook 544 from the first gear 511 of the first connecting link 51 against the elastic restoring force of the second elastic member 545, so that the backrest portion 42 can be rotated about the second direction to adjust the angle with the seat surface 41.

In practical applications, the first operating handle 55 and the second operating handle 57 are preferably combined with a handle for pushing the shifting device to move, that is, when the caregiver pushes the shifting device by grasping the handle, the caregiver can simultaneously drive the first operating handle 55 and/or the second operating handle 57 to synchronously adjust the angle between the backrest portion 42 and the seat portion 41, so that the convenience of operation is greatly improved, and the caregiver is prevented from bending down or squatting to adjust the angle.

As shown in fig. 9, in another embodiment of the present invention, the fixing base includes a base 52, a first connecting rod 51 fixedly connected with a first pivot 53 through an end portion thereof and installed to the base 52, and the end portion of the first connecting rod 51 installed to the base 52 has an outer circumferential surface protruding toward an outer side. Specifically, the outer peripheral surface is a convex arc shape with the first pivot 53 as a center, and the outer peripheral surface of the convex arc shape has a plurality of first gear teeth 511. Of course, in other embodiments, the first cog 511 may be provided separately from the first connecting rod 51, and then the first cog 511 is fixed to the end of the first connecting rod 51 by assembling.

The locking member 54 includes a gear holder 547 and a third elastic member 548, wherein the gear holder 547 includes a concave circular arc outer peripheral surface corresponding to the convex circular arc outer peripheral surface of the first connecting rod 51, and the concave circular arc outer peripheral surface has a plurality of second gear teeth 5471 thereon, and the second gear teeth 5471 are fitted to the first gear teeth 511 of the convex circular arc outer peripheral surface.

Further, the gear holder 547 is slidably fitted to the base 52, and the third elastic member 548 is fitted between the base 52 and the gear holder 547 and pushes the gear holder 547 by an elastic restoring force, so that the second gear teeth 5471 are engaged with the first gear teeth 511, thereby restricting the first connecting rod 51 from rotating.

In addition, the first adjusting assembly 5 further includes a third operating handle and a third rope, two ends of the third rope are respectively connected to the gear seat 547 and the third operating handle, and the third operating handle pulls the third rope to move the gear seat 547 against the elastic restoring force of the third elastic member 548, and the second gear 5471 of the gear seat 547 is separated from the first gear 511 of the first connecting rod 51, that is, during operation, only the third operating handle needs to be driven, and the gear seat 547 is pulled by the third operating handle, so that the second gear 5471 is separated from the first gear 511, and thus the angle between the backrest portion 42 and the seat portion 41 can be adjusted.

In practical applications, since the first adjusting assembly 5 includes an operating handle (i.e., a third operating handle) and a pull rope (i.e., a third pull rope), a protruding pillar may be disposed on the gear seat 547, and the operating handle is connected to the protruding pillar through the pull rope, so that the operating handle may pull the pull rope, so that the second gear 5471 of the gear seat 547 is disengaged from the first gear 511 of the first connecting rod 51.

As shown in fig. 10, the second adjusting assembly 6 of the present embodiment includes a ratchet mechanism 61, a connecting member 62 and a second connecting rod 63, wherein the connecting member 62 is fixed on the seat portion 41, and a head end of the second connecting rod 63 is pivotally fixed to the connecting member 62. The footrest 43 is fixed to the second link 63, and is connected to the seat surface 41 via the second link 63 and the connecting member 62.

The ratchet mechanism 61 is disposed between the connecting member 62 and the second connecting rod 63, and the ratchet mechanism 61 prevents the second connecting rod 63 from rotating in a direction away from the top surface of the seat portion 41 (i.e., in a direction toward the ground), i.e., the second connecting rod 63 can rotate in a direction toward the top surface of the seat portion 41 to adjust the angle between the footrest 43 and the seat portion 41, so as to lift the feet of the patient, thereby adapting to the most comfortable posture of the patient, improving the comfort of use, and reducing the psychological burden of the patient.

Specifically, the ratchet mechanism 61 includes a ratchet member 611 fixed to the head end of the second connecting rod 63, and a pawl member 612 and a compression spring 613 mounted on the connecting member 62, with the compression spring 613 being located between the pawl member 612 and the connecting member 62. Moreover, the pawl member 612 is pivotally connected to the connecting member 62 by a pin 614, and the claw of the pawl member 612 is pressed onto the ratchet member 611 by the elastic force of the compression spring 613, and when the second connecting rod 63 rotates in the direction away from the top surface of the seat part 41, the claw of the pawl member 612 is engaged with the tooth of the ratchet member 611, i.e. the footrest 43 is prevented from rotating downward, so that the lower limb of the patient can be reliably supported, and the footrest function can be prevented from being disabled due to the downward rotation of the footrest 43.

To ensure that the footrest 43 can freely rotate towards the top surface of the seat surface portion 41, the back surface of the claw portion of the pawl member 612 is a slope, so that when the second connecting rod 63 rotates towards the top surface of the seat surface portion 41, the tooth portion of the ratchet member 611 can push against the slope, and the pawl member 612 is driven to press the compression spring 613, and the claw portion is driven to disengage from the tooth portion of the ratchet member 611, so that the footrest 43 is prevented from being restricted by the pawl member 612 when rotating towards the top surface of the seat surface portion 41.

In addition, the seat 4 of the present embodiment further includes a neck brace 44, and the neck brace 44 is located at one end of the backrest portion 42 away from the seat surface portion 41. And, the displacement device includes the fourth adjusting unit 7, this fourth adjusting unit 7 is located between neck brace portion 44 and back portion 42, and through driving the fourth adjusting unit 7 to make the neck brace portion 44 rotate relative to back portion 42, thus adjust the angle between back brace portion 42 and the neck brace portion 44, and then fit and support the neck of the patient, avoid the long-time unsupported neck of the patient and ache.

As shown in fig. 11, the fourth adjusting assembly 7 includes a pivot body 71 disposed on the neck support portion 44, and two pivot members 72 assembled to the backrest portion 42, and the pivot body 71 is assembled between the two pivot members 72 and pivotally connected to the two pivot members 72 via a pin 73. Moreover, two side surfaces of the pivot main body 71 are respectively close to the inner side surfaces of the two pivot members 72, so that the pivot main body 71 and the two pivot members 72 can be conveniently connected, and shaking and moving caused by a large gap can be avoided.

Further, a semicircular protrusion 721 is disposed on an inner side surface of each pivot member 72, a plurality of limiting holes 711 distributed around a center line of the pin 73 are disposed on both side surfaces of the pivot body 71, and when the pivot body 71 is assembled between the two pivot members 72, the semicircular protrusion 721 on the inner side surface of each pivot member 72 is inserted into one limiting hole 711 on the side surface of the pivot body 71, and the pivot body 71 rotates around the pin 73 to insert the semicircular protrusion 721 into different limiting holes 711, so as to adjust an angle between the neck support portion 44 and the backrest portion 42. Particularly, the semicircular protrusion 721 is matched with the limiting hole 711 to realize clamping fixation, the structure is simple and practical, the processing is convenient, the angle adjusting function can be realized, and the practicability is high. In operation, the neck support portion 44 is pulled with a large force, so that the semicircular protrusion 721 is clamped to the adjacent limiting hole 711, thereby completing the angle adjustment operation, and the operation is simple and convenient.

In addition, the seat 4 of the embodiment further includes an armrest 45, the armrest 45 is located at one end of the seat surface portion 41 close to the backrest portion 42, and a third adjusting component for driving the armrest 45 to rotate relative to the seat surface portion 41 is arranged between the armrest 45 and the seat surface portion 41. In practical applications, the structure of the third adjusting assembly is determined according to practical situations, for example, a lockable gear transmission mechanism is adopted, that is, the armrest 45 is locked by the third adjusting assembly after being adjusted in angle relative to the seat part 41 by the third adjusting assembly.

During operation, the shifting device can adjust the second adjusting component 6 to enable the free ends of the footrest parts 43 to correspond to a plane to be supported, and then adjust the third adjusting component to enable the free ends of the armrests 45 to be respectively supported to the plane to be supported, and the plane to be supported can be specifically the ground, namely the free ends of the footrest parts 43 and the armrests 45 are directly supported to the ground, so that multi-point support is realized by matching with the base 52, and because the backrest part 42 and the footrest parts 43 are not completely positioned in the vertical projection area of the base 52, the arrangement can enable the shifting device to be more stable and reliable, and particularly when the backrest part 42 and the footrest parts 43 are adjusted to be parallel to the seat surface 41, as shown in fig. 12, the seat 4 is ensured not to be inclined and overturned easily due to uneven stress.

Because the shifting device is also provided with the lifting component 21, the height of the seat 4 can be adjusted through the lifting device 2, so that the plane to be supported is superposed with the ground, and multi-point support is realized.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims (9)

1. A shifting device is used for moving patients in different indoor scenes and is characterized by comprising a brake assembly, a lifting device, a moving base and a seat, wherein the moving base and the seat are respectively fixed at two ends of the lifting device, and the seat is adjusted to be higher than the moving base through the lifting device; the moving base includes a base frame, and a plurality of roller members respectively fitted to the bottom of the base frame, and the brake assembly brakes the displacement device by braking the roller members; the seat comprises a seat surface part, and a backrest part and a foot support part which are fixedly connected to two ends of the seat surface part through adjusting components respectively, and the angles between the backrest part and the seat surface part are adjusted through the adjusting components respectively;

elevating gear includes lifting unit, cuts fork crane and drive assembly, cut the bottom of fork crane with it is fixed mutually to remove the base, cut the top of fork crane with the seat is fixed mutually, just elevating gear is through pressing with the first mode drive assembly adjustment pressure in the lifting unit, in order to drive the seat rises, through pressing with the second mode drive assembly adjustment pressure in the lifting unit, in order to drive the seat descends.

2. The shifting apparatus according to claim 1, wherein the brake assembly comprises a plurality of resilient members and a plurality of brake members corresponding to the plurality of roller members, respectively, each of the roller members is assembled to the bottom of the base frame by one resilient member, the plurality of brake members are fixedly mounted to the bottom of the base frame, respectively, and the brake members release the roller members under the resilient force of the resilient members, the base frame driving the plurality of brake members to press against the plurality of roller members against the resilient force of the resilient members to brake the plurality of roller members when the seat support exceeds a predetermined value.

3. The shifting device according to claim 2, wherein each brake member comprises a brake pad and an elastic member, the brake pad is fixed to the bottom surface of the bottom frame through the elastic member, and each brake pad is positioned in the vertical projection area of the corresponding roller member under the elastic force of the elastic member;

the brake subassembly still includes the spool, assembles and is in brake cable in the spool and be used for the drive the brake cable is in gliding actuation handle in the spool, wherein: the first end of the brake cable is fixedly connected with the driving handle, the second end of the brake cable is fixedly connected with the plurality of brake pads of the brake member, the brake cable is driven by the driving handle to pull the plurality of brake pads to move towards the direction far away from the roller member, so that the plurality of brake pads release the corresponding roller member.

4. The displacement apparatus of claim 1, wherein the adjustment assembly comprises a first adjustment assembly disposed between the chair surface portion and the backrest portion, a second adjustment assembly disposed between the chair surface portion and the footrest portion, and the backrest portion is adjustable in angle to the chair surface portion by adjusting the first adjustment assembly, and the footrest portion is adjustable in angle to the chair surface portion by adjusting the second adjustment assembly.

5. The shifter of claim 4, wherein the first adjustment assembly includes a first connecting rod fixedly connected to the seat portion and a fixed seat fixedly connected to the backrest portion, and the first connecting rod is pivotally mounted to the fixed seat; and a locking component is arranged in the fixed seat, and the first connecting rod is limited to rotate relative to the pivot by the locking component.

6. The displacement device of claim 5, wherein the holder includes a base and the first connecting rod is pivotally mounted to the base;

one end of the first connecting rod, which is arranged on the base, is provided with a convex arc-shaped peripheral surface which takes the pivot as the center of a circle, and the convex arc-shaped peripheral surface is provided with a plurality of first gear teeth; the locking component comprises a gear seat and an elastic piece, the gear seat comprises a concave arc-shaped peripheral surface corresponding to the convex arc-shaped peripheral surface, and a plurality of second gear teeth are arranged on the concave arc-shaped peripheral surface;

the gear seat is assembled to the base in a sliding manner, the elastic piece is assembled between the base and the gear seat, and pushes the gear seat through elastic restoring force, so that the second gear teeth are meshed with the first gear teeth, and the first connecting rod is limited to rotate relative to the pivot.

7. The shifting apparatus according to claim 6, wherein the first adjusting assembly comprises an operating handle and a pull cord, the gear base has a boss thereon, the operating handle is connected to the boss through the pull cord, and the operating handle disengages the second gear teeth of the gear base from the first gear teeth of the first connecting rod by pulling the pull cord.

8. The shifter of claim 4, wherein the second adjustment assembly includes a ratchet mechanism, a connecting member fixed to the seat portion, and a second connecting rod having a head end pivotally connected to the connecting member, and the foot rest portion is fixed to the second connecting rod and connected to the seat portion via the second connecting rod and the connecting member;

the ratchet mechanism comprises a ratchet member fixed at the head end of the second connecting rod, and a pawl member and a compression spring which are installed on the connecting member, and the compression spring is positioned between the pawl member and the connecting member; the pawl component is pivotally connected and fixed with the connecting component through a pin shaft, the claw part of the pawl component is pressed on the ratchet component under the action of the elastic force of the compression spring, and when the second connecting rod rotates towards the direction far away from the top surface of the chair surface part, the claw part of the pawl component is clamped on the tooth part of the ratchet component;

the back surface of the claw part of the pawl component is an inclined surface, and when the second connecting rod rotates towards the top surface of the chair surface part, the tooth part of the ratchet component pushes against the inclined surface so as to drive the pawl component to extrude the compression spring and drive the claw part to be separated from the tooth part of the ratchet component.

9. The displacement apparatus of claim 4, wherein the seat comprises an armrest at an end of the seat portion proximate to the backrest portion, and a third adjustment assembly is disposed between the armrest and the seat portion for driving the armrest to rotate relative to the seat portion; the shifting device enables the free ends of the armrests and the foot supports to be respectively supported to the ground by adjusting the second adjusting assembly, the third adjusting assembly and the lifting device.

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