CN211213982U - Hip plate mechanism for nursing bed - Google Patents

Abstract

The utility model discloses a buttock plate mechanism for nursing bed, which comprises two buttock plates (1.1), wherein the two buttock plates (1.1) are hinged, the center of the buttock plate (1.1) is provided with a defecation hole (1.2), a bottom frame (2) is arranged below the buttock plate (1.1), the bottom frame (2) comprises a bottom plate (2.2) and a base (2.3), the base (2.3) is fixedly connected with the buttock plates (1.1), the bottom plate (2.2) is in sliding connection with the base (2.3), a supporting plate (3) is arranged in the bottom frame (2), a driving component (4) which is vertically moved to the defecation hole (1.2) from the inside of the bottom frame (2) after parallel moving is carried out, a linkage structure limits the lifting plate (4.3) to relatively move the driving plate (4.2) to be lifted in the parallel moving process of the supporting plate (3), and after the parallel movement of the supporting plate (3) is finished, the limit is released so that the lifting plate (4.3) is lifted relative to the translation driving plate (4.2) through the scissor lifting structure (4.4).

Description

Hip plate mechanism for nursing bed

Technical Field

The utility model relates to a nursing bed technical field, in particular to a buttockss board mechanism for nursing bed.

Background

For patients who have poor self-care ability or no self-care ability and the like and need to lie on bed for a long time, the lying posture of the patient generally needs to be frequently adjusted in the long-term lying process, so that the patient can lie on bed more comfortably, and soft tissue ulceration and even necrosis caused by local continuous ischemia, hypoxia and malnutrition due to long-time compression when a certain part of the body lies on bed are avoided. In the process of nursing patients, medical staff often help patients safely and quickly complete partial turning or posture adjustment actions by means of a nursing bed.

In order to enable a patient to defecate without getting out of the bed, the center of a hip plate of some nursing beds is provided with a defecation hole, the lower part of the defecation hole is provided with a defecation mechanism, the defecation hole needs to be covered when the nursing bed is not used and needs to be opened when the nursing bed is used, the existing cover plate generally used at the position of a manual defecation hole is used for opening or closing the defecation hole, so that the hip of the patient needs to be avoided, the operation is very inconvenient, and when the patient adjusts the lying position such as side turning, the bed frame of the nursing bed is turned on side, the cover plate still stays at the original position, the vacancy can be caused to appear in the hip, and the hip of the patient can be embedded into the vacancy to cause the discomfort of the patient.

Disclosure of Invention

The utility model discloses the technical problem that will solve is: the hip plate mechanism for the nursing bed can automatically open or close the defecation hole, can turn over along with the nursing bed without generating vacant positions, and is convenient to use and ingenious in structure.

The utility model provides a technical scheme that above-mentioned problem adopted does: a hip plate mechanism for a nursing bed comprises two hip plates which are hinged with each other, the center of the hip plate is provided with a defecation hole, a bottom frame is arranged below the hip plate, a supporting plate and a driving assembly for driving the supporting plate to vertically move to the defecation hole after parallel movement in the bottom frame are arranged in the bottom frame, the driving component comprises a driving piece, a translation driving board, a lifting board, a scissor lifting structure and a linkage structure, the lifting plate is arranged on the translation driving plate in a lifting way through the scissor lifting structure, the translation driving plate is pushed by the driving piece to translate, the linkage structure is arranged between the translation driving plate and the lifting plate, the linkage structure limits the lifting plate to be lifted relative to the translation driving plate in the parallel moving process of the supporting plate, and after the parallel movement of the supporting plate is finished, the limit is released so that the lifting plate is lifted relative to the translation driving plate through the scissor lifting structure.

Compared with the prior art, the utility model has the advantages of: the two hip plates are hinged to each other so as to turn on one side together with a frame of the nursing bed when the nursing bed is turned over laterally, the centers of the hip plates are provided with defecation holes for a patient to defecate and urinate, and the defecation holes need to be covered to realize the support of the hip when not used;

the driving mechanism drives the supporting plate according to the motion principle that the driving piece provides driving force, the motion process of the supporting plate in the whole driving process is divided into two stages, namely a parallel moving stage and a vertical moving stage, in the process, the translation driving plate is always driven by the driving piece to move in parallel, the linkage structure is arranged between the translation driving plate and the lifting plate, in the parallel moving stage, the translation driving plate and the lifting plate are limited to limit the lifting plate to enable the lifting plate not to move vertically, the bottom plate and the underframe slide relatively, the supporting plate moves in parallel, when the parallel moving stage of the supporting plate is finished and is switched to move vertically, the linkage structure releases the limit between the lifting plate and the translation driving plate, the driving piece continues to push the translation driving plate to move to enable the lifting plate to move and lift relatively through the shear lifting structure, and therefore the motion track that the supporting plate moves firstly and, the supporting plate is prevented from being clamped in the bottom frame due to early lifting, and the supporting plate is lifted to the position of the defecation hole when the driving part is pushed to the bottom.

Preferably, the scissor lifting structure comprises a first fork arm, a second fork arm, a first scissor slide rail, a second scissor slide rail and a top plate, the first fork arm and the second fork arm are hinged in the middle, a fixing portion of the first scissor slide rail is arranged on the bottom plate, a sliding portion of the first scissor slide rail is arranged on the translation driving plate, a fixing portion of the second scissor slide rail is arranged on the top plate, a sliding portion of the second scissor slide rail is arranged on the lifting plate, one end of the first fork arm is hinged to the lifting plate, the other end of the first fork arm is hinged to the bottom plate, one end of the second fork arm is hinged to the translation driving plate, the other end of the second fork arm is hinged to the top plate, through the improvement, the driving piece pushes the translation driving plate to translate relative to the bottom plate through the first scissor slide rail, the other end of the first fork arm is hinged to the lifting plate, the other end of the first fork arm is hinged to the bottom plate, one end of the second fork, The other end is articulated with the roof, and first prong and second prong middle part are articulated, so first prong and second prong realize cutting the fork motion, and the relative lifter plate translation of second scissors slide rail is passed through to the roof simultaneously to make the relative translation drive plate vertical movement of lifter plate, thereby realize the lifting of layer board, otherwise, driving piece pulling translation drive plate, the layer board just can descend through cutting fork elevation structure.

Preferably, through first slide rail sliding connection between bottom plate and the base, the direction that sets up of first slide rail is the same with the promotion direction of driving piece, the fixed part setting of first slide rail is on the base, the removal portion setting of first slide rail is on the bottom plate, through the improvement, through setting up the bottom plate and set up first slide rail between bottom plate and base, can reduce the length of base for overall structure is compacter, and first slide rail can provide horizontal motion direction, and the driving piece is when promoting the bottom plate, and first slide rail unblock in advance produces parallel translation, and first scissors fork slide rail participates in parallel translation again when waiting for first slide rail to extend to the limit, can avoid first scissors fork slide rail department to slide earlier and lead to the lifter plate just begin to go up and down before parallel translation finishes, and the card dies in the base.

Preferably, the linkage structure is a magnetic attraction part, the magnetic attraction part is arranged on the lifting plate and is in magnetic attraction fit with the bottom plate, when the driving part drives the translation driving plate to move in parallel, the magnetic attraction part attracts the bottom plate and the lifting plate to attract the bottom plate and the lifting plate so that the supporting plate is firstly pushed and overcomes the attraction force of the magnetic attraction part through the first sliding rail and the driving part, and the lifting plate is lifted relative to the translation driving plate through the scissor lifting structure so as to realize the lifting of the supporting plate.

Preferably, the suction force of the magnetic attraction piece is greater than the friction force between the fixed part and the sliding part of the first slide rail, through the improvement, the suction of the translation drive plate and the lifting plate of the support plate under the pushing of the driving piece in the translation stage is ensured, the first slide rail can be selected to have a slide rail with in-place damping when being completely opened, when the support plate is withdrawn from the support body, the first scissor slide rail and the second scissor slide rail slide to move the support plate downwards, and then the in-place damping is released to enable the first slide rail to retract and the support plate to be translated into the chassis.

Preferably, the linkage structure comprises a clamping piece and a stopping piece, the clamping piece is arranged at the driving end of the driving piece, the translation driving plate is clamped with the lifting plate in the parallel moving process of the supporting plate so as to limit the lifting of the lifting plate relative to the translation driving plate, the stopping piece is arranged in the underframe and is used for limiting the parallel moving of the clamping piece, the clamping piece is limited by the stopping piece and stops translating in the parallel moving process of the translation driving plate, the driving piece continues to push the translation driving plate so that the limitation of the clamping piece on the translation driving plate and the lifting plate is removed, then the lifting plate is continuously pushed by the driving piece to be lifted upwards relative to the translation driving plate through the scissor lifting structure, through the improvement, the clamping piece is arranged at the driving end of the driving piece, in the parallel moving stage, the translation driving plate and the lifting plate are clamped so as to limit the lifting plate not, the clamping piece is limited by the stop piece to move, the driving piece continues to push the translation driving plate to move, so that the limiting of the clamping piece between the translation driving plate and the lifting plate is relieved, and the lifting plate is lifted relative to the translation driving plate through the scissor lifting structure, so that the movement track of the supporting plate which is translated firstly and lifted secondly is realized, and the supporting plate is prevented from being lifted too early and clamped in the underframe.

Preferably, an elastic piece is arranged between the clamping piece and the driving end of the driving piece, the elastic piece drives the clamping piece to have a tendency of clamping towards the lifting plate, through the improvement, when the elastic piece pushes the translation driving plate, the clamping piece is matched with the translation driving plate and the lifting plate through the elastic force of the elastic piece so that the lifting plate cannot be lifted relative to the translation driving plate until the lifting plate cannot continue to move in parallel along with the driving piece under the limitation of a stop piece, in the process that the supporting plate descends and retracts into the base frame, the lifting plate vertically falls to the translation driving plate, the driving piece continues to retract, the lifting plate and the translation driving plate continue to be matched with the clamping piece to realize clamping, and the lifting plate is prevented from being clamped in the base due to lifting relative to the translation driving plate in the.

Preferably, the bottom surface of the bottom plate is provided with a limiting structure, the limiting structure comprises a limiting rod, a limiting block and an unlocking block, the middle part of the limiting rod is hinged, one end of the limiting rod is a limiting end, the other end of the limiting rod is an execution end, the limiting end is provided with a limiting groove, the limiting block is arranged on the base, the limiting block moves into the limiting groove when the clamping piece is matched with the stopping piece, the bottom plate and the base are mutually limited, the unlocking block is arranged downwards on one side of the lifting plate, the unlocking block pushes the execution end to release the matching of the limiting groove and the limiting block when the lifting plate descends and the top plate falls to be abutted against the translation driving plate, the driving piece drives the translation driving plate and drives the supporting plate to an initial position, through the improvement, the driving piece retracts when the supporting plate needs to retract into the chassis, the limiting structure firstly limits the position of the bottom plate not to, the specific principle of the limiting structure is that when the bottom plate moves to the maximum displacement position in parallel, the limiting groove on the limiting rod at the bottom plate is matched with the limiting block of the base for limiting, the bottom plate cannot move relative to the base, the driving piece continues to push the translation driving plate to move relative to the bottom plate so as to realize the lifting of the lifting plate, when the supporting plate falls down, the limiting block is matched with the limiting groove for limiting so that the bottom plate and the base cannot move relatively, the driving piece drives the translation driving plate to move relatively to the bottom plate, at the moment, the lifting plate descends to the translation driving plate through the scissor lifting structure, when the lifting plate falls to the lowest position, the unlocking block at the lifting plate pushes the execution end, the limiting block is disengaged from the limiting groove, and the driving piece continues to retract so that the bottom plate continues to retract relative to the base and the supporting plate moves in parallel to enter the base.

Preferably, the limiting structure comprises an extension bar and an ejector block, one end of the ejector block penetrates through the bottom plate from the bottom of the bottom plate and then is exposed on the upper surface of the bottom plate and matched with the unlocking block, the lower portion of the other end of the ejector block is hinged to the bottom plate, the upper portion of the other end of the ejector block is hinged to the extension bar, the other end of the extension bar is connected with the limiting bar, through the improvement, the extension bar can amplify the displacement of the execution end pushed by the limiting block, namely the unlocking block acts on the ejector block, the other end of the ejector block is provided with a hinge point, the relative hinge point of the ejector block rotates, so that the execution end is pressed downwards by the extension bar, finally the limiting groove is made to rise, the limiting groove is in limited contact with.

Preferably, the driving piece is connected with the translation drive plate through a connecting rod assembly, the connecting rod assembly comprises a first connecting rod and a second connecting rod, one end of the first connecting rod is hinged to the base, the other end of the first connecting rod is hinged to the driving end of the driving piece and one end of the second connecting rod, the other end of the second connecting rod is hinged to the translation drive plate, through the improvement, when the supporting plate moves into the chassis, the driving piece drives the first connecting rod and the second connecting rod to be close and intersected, the bottom plate is pulled to move towards the chassis, and when the supporting plate moves out of the chassis, the driving piece drives the first connecting rod and the second connecting rod to be opened to be collinear to drive the bottom plate to slide relative to the chassis, the displacement of the driving end of the driving piece can be amplified through the connecting rod assembly, and the translation drive plate can have larger.

Drawings

Fig. 1 is a schematic structural view of the nursing bed supporting plate covering the defecation hole.

Fig. 2 is a schematic structural view of the nursing bed support plate when the nursing bed support plate is opened.

Fig. 3 is a schematic perspective view of the hip plate mechanism of the present invention.

Fig. 4 is a schematic view of a driving structure of the first embodiment of the present invention when the supporting plate retracts into the base.

FIG. 5 is a schematic view of a driving structure of the first embodiment of the present invention when the support plate is moved to the defecation hole.

FIG. 6 is a schematic view showing another direction of the driving structure when the support plate moves to the defecation hole according to the first embodiment of the present invention.

Fig. 7 is a schematic view of a driving structure of the second embodiment of the present invention when the supporting plate retracts into the base.

Fig. 8 is a schematic view illustrating another direction of driving the supporting plate to retract into the base according to the second embodiment of the present invention.

Fig. 9 is a schematic view of a driving structure of the second embodiment of the present invention when the support plate moves to the defecation hole.

Fig. 10 is a schematic view showing another direction of the driving structure when the support plate moves to the defecation hole according to the second embodiment of the present invention.

1. A bed frame; 1.1, hip plate; 1.2, defecation holes; 2. a chassis; 2.1, a stop member; 2.2, a bottom plate; 2.3, a base; 3. a support plate; 4. a drive assembly; 4.1, a driving piece; 4.1.1, a first connecting rod; 4.1.2, a second connecting rod; 4.2, translating the driving plate; 4.3, a lifting plate; 4.4, a scissor lifting structure; 4.4.1, a first yoke; 4.4.2, second prong; 4.4.3, a first scissor slide rail; 4.4.4, a second scissor slide rail; 4.4.5, a top plate; 4.5, a clamping piece; 4.5.1, bayonet; 4.6, an elastic piece; 4.7, a first slide rail; 4.8, magnetic parts; 5. a limiting structure; 5.1, limiting rods; 5.1.1, a limit groove; 5.1.2, a guide surface; 5.2, a limiting block; 5.3, an unlocking block; 5.4, lengthening a rod; 5.5, a top block.

Detailed Description

Embodiments of the present invention are further described below with reference to the accompanying drawings.

The nursing bed comprises a bed frame 1, wherein the bed frame 1 is positioned at the hip position of a patient and is provided with two hip plates 1.1, the two hip plates 1.1 are hinged, the center of the hip plate 1.1 is provided with a defecation hole 1.2, when the patient needs to excrete, the supporting plate 3 moves away from the defecation hole 1.2 relatively, the rising of the closestool body is not interfered, the closestool body rises to the defecation hole 1.2 for the patient to excrete, after the defecation is finished, the supporting plate 3 moves to cover the defecation hole 1.2 to support the hip of the patient, so the supporting plate 3 moves relative to the defecation hole 1.2 and has two stages, the first stage is parallel movement to the position below the defecation hole 1.2, and the second stage is vertical movement to the position of the defecation hole 1.2.

The hip plate mechanism has two embodiments,

as shown in FIGS. 4 to 6, a first embodiment: an underframe 2 is arranged below the hip plate 1.1, a supporting plate 3 is arranged in the underframe 2, the driving supporting plate 3 is driven to vertically move to a driving component 4 at the defecation hole 1.2 after parallel movement in the underframe 2, the driving component 4 comprises a driving piece 4.1, a translation driving plate 4.2, a lifting plate 4.3, a scissor lifting structure 4.4 and a magnetic attraction piece 4.8, the supporting plate 3 is arranged on the lifting plate 4.3, the lifting plate 4.3 is arranged on the translation driving plate 4.2 in a lifting manner through the scissor lifting structure 4.4, the translation driving plate 4.2 is driven to translate by the driving piece 4.1, the magnetic attraction piece 4.8 is arranged on the lifting plate 4.3, the bottom plate 2.2 and the lifting plate 4.3 are attracted in a parallel movement process of the supporting plate 3 to limit the lifting plate 4.3 to lift relative to the bottom plate 2.2, the bottom plate 2.2 slides relative to the underframe 2 initially, the supporting plate 3 moves in a parallel manner, the bottom plate 2.2 moves to the maximum position relative to the underframe 2, after the parallel movement stage of the supporting plate 3 is finished, the driving piece 4.1 continuously drives the magnetic attraction piece 4.2 to enable, Then the lower lifting plate 4.3 is continuously pushed by the driving piece 4.1 to be lifted upwards relative to the translation driving plate 4.2 through the scissor lifting structure 4.4;

the magnetic attraction piece 4.8 can attract the lifting plate 4.3 and the bottom plate 2.2 in the translation stage of the supporting plate 3, so that the supporting plate 3 is prevented from being clamped with the bottom frame 2 when rising first, and when the defecation hole 1.2 needs to be opened and the supporting plate 3 is retracted, the supporting plate 3 descends first to attract the lifting plate 4.3 and the bottom plate 2.2 and then translates back into the base 2.3;

as shown in FIGS. 7 to 10, a second embodiment: an underframe 2 is arranged below the hip plate 1.1, a supporting plate 3 is arranged in the underframe 2, the driving supporting plate 3 is driven to vertically move to a driving assembly 4 at the position of a defecation hole 1.2 after parallel movement in the underframe 2, the driving assembly 4 comprises a driving part 4.1, a translation driving plate 4.2, a lifting plate 4.3, a scissor lifting structure 4.4 and a clamping part 4.5, the supporting plate 3 is arranged on the lifting plate 4.3, the lifting plate 4.3 is arranged on the translation driving plate 4.2 in a lifting way through the scissor lifting structure 4.4, the translation driving plate 4.2 is pushed by the driving part 4.1 to translate, the clamping part 4.5 is arranged at the driving end of the driving part 4.1, the translation driving plate 4.2 is clamped with the lifting plate 4.3 in the parallel movement process of the supporting plate 3 to limit the lifting plate 4.3 to lift the translation driving plate 4.2, a stopping part 2.1 for limiting the parallel movement of the clamping part 4.5 is arranged in the underframe 2, and the clamping part 4.5 is limited by the stopping the translation stopping the, The driving piece 4.1 continuously pushes the translation driving plate 4.2 to enable the clamping piece 4.5 to release the limitation on the translation driving plate 4.2 and the lifting plate 4.3, and then the driving piece 4.1 continuously pushes the lower lifting plate 4.3 to be lifted upwards relative to the translation driving plate 4.2 through the scissors lifting structure 4.4;

the driving mechanism drives the supporting plate 3 according to the motion principle that the driving member 4.1 provides driving force, the motion process of the supporting plate 3 in the whole driving process is divided into two stages, namely a parallel motion stage and a vertical motion stage, in the process, the translation driving plate 4.2 is always driven by the driving member 4.1 to move in parallel, the linkage structure is arranged at the driving end of the driving member 4.1, in the parallel motion stage, the translation driving plate 4.2 and the lifting plate 4.3 are clamped to limit the lifting plate 4.3 to enable the lifting plate to not move vertically, in the parallel motion stage, when the vertical motion stage is switched to the vertical motion stage, the clamping member 4.5 is limited to move by the stopping member 2.1, the driving member 4.1 continuously pushes the translation driving plate 4.2 to move so that the clamping member 4.5 relieves the limit between the translation driving plate 4.2 and the lifting plate 4.3, the lifting plate 4.3 is lifted relative to the translation driving plate 4.2 through the scissor lifting structure 4.4, and then the lifting, the supporting plate 3 is prevented from being early lifted and clamped in the bottom frame 2;

an elastic piece 4.6 is arranged between the clamping piece 4.5 and the driving end of the driving piece 4.1, and the elastic piece 4.6 drives the clamping piece 4.5 to have a clamping tendency towards the lifting plate 4.3;

when the elastic piece 4.6 pushes the translation driving plate 4.2 through the driving piece 4.1, the clamping piece 4.5 is driven by the elastic force of the elastic piece 4.6 to be matched with the translation driving plate 4.2 and the lifting plate 4.3, so that the lifting plate 4.3 cannot be lifted relative to the translation driving plate 4.2 until the lifting plate is limited by the stop piece 2.1 and cannot continue to move in parallel with the driving piece 4.1, in the process that the supporting plate 3 descends and retracts into the base frame 2, the lifting plate 4.3 vertically falls to the translation driving plate 4.2, the driving piece 4.1 continues to retract, the lifting plate 4.3 and the translation driving plate 4.2 continue to be matched with the clamping piece 4.5 to realize clamping, and the phenomenon that the lifting plate 4.3 is lifted relative to the translation driving plate 4.2 in the process of retracting into the base 2.3 and is blocked;

the bottom surface of the bottom plate 2.2 is provided with a limiting structure 5, the limiting structure 5 comprises a limiting rod 5.1, a limiting block 5.2 and an unlocking block 5.3, the middle of the limiting rod 5.1 is hinged, one end of the limiting rod 5.1 is a limiting end, the other end of the limiting rod 5.1 is an execution end, the limiting end is provided with a limiting groove 5.1.1, the limiting block 5.2 is arranged on the base 2.3, the limiting block 5.2 moves into the limiting groove 5.1.1 when the clamping piece 4.5 is matched with the stopping piece 2.1, the bottom plate 2.2 and the base 2.3 are mutually limited, one side of the lifting plate 4.3 is downwards provided with the unlocking block 5.3, the lifting plate 4.3 descends, the unlocking block 5.3 pushes the execution end to release the matching of the limiting groove 5.1.1 and the limiting block 5.2 when the top plate 4.5 falls to be abutted against the translation drive plate 4.2, and the driving piece 4.1 drives the translation drive plate 4.2 to drive the initial.

When the supporting plate 3 needs to retract into the chassis 2, the driving member 4.1 retracts, the limiting structure 5 firstly limits the position of the bottom plate 2.2 so as not to allow the bottom plate 2.2 to move, the lifting plate 4.3 firstly descends to retract relative to the base 2.3, the limiting structure can prevent the supporting plate 3 from translating while descending and being stuck with the base 2.3 in the process that the supporting plate 3 retracts into the chassis 2, the specific principle of the limiting structure 5 is that when the bottom plate 2.2 moves to the maximum displacement position in parallel, the limiting groove 5.1.1 on the limiting rod 5.1 at the bottom plate 2.2 is matched with the limiting block 5.2 of the base 2.3 for limiting, the bottom plate 2.2 cannot move relative to the base 2.3, the driving member 4.1 continuously pushes the translation driving plate 4.2 to move relative to the bottom plate 2.2 so as to realize the lifting of the lifting plate 4.3, when the supporting plate 3 falls, the limiting block 5.2 is matched with the limiting groove 5.1.1 for limiting so that the bottom plate 2.2 cannot move relative to the base 2.3, the driving member 4.1 translates relative to the bottom plate 2, and moves to the lifting plate 4.2, when the lifting plate 4.3 falls to the lowest position, the unlocking block 5.3 at the lifting plate 4.3 pushes the execution end, the limiting block 5.2 is disengaged from the limiting groove 5.1.1, and the driving piece 4.1 is continuously retracted to enable the bottom plate 2.2 to be continuously retracted relative to the base 2.3 and the supporting plate 3 to move in parallel to enter the base 2.3.

Wherein, limit structure 5 includes extension bar 5.4, kicking block 5.5, and kicking block 5.5 one end is passed behind bottom plate 2.2 bottom the bottom plate 2.2 and is exposed and put at bottom plate 2.2 upper surface and with unblock piece 5.3 cooperation, and the lower part and the bottom plate 2.2 of the kicking block 5.5 other end are articulated, upper portion and extension bar 5.4 are articulated, and the other end and the gag lever post 5.1 of extension bar 5.4 are connected.

Extension bar 5.4 can promote the displacement of execution end with stopper 5.2 and enlarge, and unlocking piece 5.3 is used in ejector pad 5.5 promptly, and the other end of ejector pad 5.5 is equipped with the pin joint, and the relative pin joint of ejector pad 5.5 rotates to make extension bar 5.4 push down the execution end, finally make spacing groove 5.1.1 rise, spacing contact of spacing groove 5.1.1 and stopper 5.2, driving piece 4.1 continues the withdrawal so that base plate 2.2 continues the withdrawal relative to base 2.3.

Wherein, the tip of the spacing end of gag lever post 5.1 is equipped with spigot surface 5.1.2, and spigot surface 5.1.2 cooperates with stopper 5.2 and lifts up the spacing end so that stopper 5.2 immigrates in spacing groove 5.1.1.

The guide surface 5.1.2 is used for guiding the limiting block 5.2 into the limiting groove 5.1.1 when the bottom plate 2.2 is opened to the limit position relative to the base 2.3.

The clamping piece 4.5 is provided with a bayonet 4.5.1, the opening direction of the bayonet 4.5.1 faces the translation drive plate 4.2, the bayonet 4.5.1 clamps the lifting plate 4.3 with the translation drive plate 4.2 when the supporting plate 3 moves in parallel, the lifting plate 4.3 cannot vertically lift relative to the translation drive plate 4.2, the lifting plate 4.3 and the translation drive plate 4.2 move out of the bayonet 4.5.1 after the clamping piece 4.5 is stopped by the stopping piece 2.1, and the lifting plate 4.3 vertically moves relative to the translation drive plate 4.2 along with the scissor lifting structure 4.4 under the continuous pushing of the driving piece 4.1.

Bayonet 4.5.1 simple structure, 4.3 and translation drive plate 4.2 of lifter plate can restrict in bayonet 4.5.1, because opening direction is horizontal towards translation drive plate 4.2 promptly, so can restrict 4.3 relative translation drive plate 4.2 vertical movement of lifter plate, and after the fastener 4.5 motion is limited, 4.3 and translation drive plate 4.2 can shift out relative bayonet 4.5.1, realize vertical removal.

The stop piece 2.1 is arranged on the lower surface of the bottom plate 2.2, the clamping piece 4.5 penetrates through the bottom plate 2.2 through the stop arm and is exposed at the lower part of the bottom plate 2.2, and the bottom plate 2.2 is provided with a long groove for the stop arm to move transversely.

Wherein the drive 4.1 is a cylinder.

The two hip plates 1.1 are hinged to each other so as to be turned on one side together with a frame of the nursing bed when the nursing bed is turned over, the center of each hip plate 1.1 is provided with a defecation hole 1.2 for a patient to defecate and urinate, the defecation holes 1.2 are required to be covered to realize the support of the hip when not used, and the defecation holes 1.2 are in the center, so that the supporting plate 3 for covering the defecation holes 1.2 is divided into two half sides so as to be turned over along with the turning over of the nursing bed when the nursing bed is turned over on one side, and therefore the underframe 2 and the driving assembly 4 are arranged below the two hip plates 1.1 so as to close and open the defecation holes 1.2.

The chassis 2 comprises a bottom plate 2.2 and a base 2.3, the base 2.3 is fixedly connected with a hip plate 1.1, the scissor lifting structure 4.4 comprises a first fork arm 4.4.1, a second fork arm 4.4.2, a first scissor slide rail 4.4.3, a second scissor slide rail 4.4.4 and a top plate 4.4.5, the middle parts of the first fork arm 4.4.1 and the second fork arm 4.4.2 are hinged, the first scissor slide rail 4.4.3 is arranged between the translation driving plate 4.2 and the bottom plate 2.2, the support plate 3 is fixed on the top plate 4.4.5 and is arranged on the lifting plate 4.3 in a sliding manner through the second scissor slide rail 4.4.4, one end of the first fork arm 4.4.1 is hinged with the lifting plate 4.3, the other end of the first fork arm 4.4.2 is hinged with the translation driving plate 4.2, and the other end of the top plate is hinged with the translation driving plate 4.4.4.5;

the principle of the scissor lifting mechanism is that the driving part 4.1 pushes the translation driving plate 4.2, the translation driving plate 4.2 translates relative to the bottom plate 2.2 through the first scissor slide rail 4.4.3, one end of the first fork arm 4.4.1 is hinged to the lifting plate 4.3, the other end of the first fork arm is hinged to the base 2.3, one end of the second fork arm 4.4.2 is hinged to the translation driving plate 4.2, the other end of the second fork arm is hinged to the top plate 4.4.5, and the middle parts of the first fork arm 4.4.1 and the second fork arm 4.2 are hinged, so that the first fork arm 4.4.1 and the second fork arm 4.4.2 realize scissor movement, and the top plate 4.4.5 translates relative to the lifting plate 4.3 through the second scissor slide rail 4.4.4.4, so that the lifting plate 4.3 vertically moves relative to the translation driving plate 4.2, thereby realizing lifting of the supporting plate 3, otherwise, the driving part 4.1 pulls the translation driving plate 4.2, and the lifting structure can descend through.

The first slide rail 4.7 can select to have the slide rail that puts damping in place when opening completely, can be when the layer board 3 withdraws the support body, slide by first scissors fork slide rail 4.4.3 and second scissors fork slide rail 4.4.4 earlier and move layer board 3 down, remove the damping that puts in place again and make first slide rail 4.7 withdraw, layer board 3 translation go into in chassis 2, first slide rail 4.7 can set up between the lateral wall of bottom plate 2.2 and base 2.3 as figure 4, also can go into figure 8 and set up between bottom plate 2.2 lower extreme and the up end of base 2.3.

The bottom plate 2.2 is connected with the base 2.3 in a sliding mode through the first slide rail 4.7, the arrangement direction of the first slide rail 4.7 is the same as the pushing direction of the driving piece 4.1, the stopping piece 2.1 is arranged on the bottom plate 2.2, and the friction force of the first slide rail 4.7 is smaller than that of the first scissor slide rail 4.4.3.

By arranging the bottom plate 2.2 and arranging the first sliding rail 4.7 between the bottom plate 2.2 and the base 2.3, the direction of the support plate 3 in the translation stage can be provided, the friction force of the first sliding rail 4.7 is set to be smaller than that of the first scissors sliding rail 4.4.3, namely, when the driving piece 4.1 pushes the bottom plate 2.2, the first sliding rail 4.7 is unlocked in advance to generate parallel movement, and when the first sliding rail 4.7 extends to the limit, the first scissors sliding rail 4.4.3 participates in the parallel movement, so that the lifting plate 4.3 can be prevented from being lifted and stuck in the base 2.3 before the parallel movement is finished because the first scissors sliding rail 4.4.3 slides in advance.

The driving piece 4.1 is connected with the translation driving plate 4.2 through a connecting rod assembly, the connecting rod assembly comprises a first connecting rod 4.1.1 and a second connecting rod 4.1.2, one end of the first connecting rod 4.1.1 is hinged with the base 2.3, the other end of the first connecting rod 4.1.1 is hinged with the driving end of the driving piece 4.1 and one end of the second connecting rod 4.1.2, the other end of the second connecting rod 4.1.2 is hinged with the translation driving plate 4.2, through improvement, when the supporting plate 3 moves into the bottom frame 2, the driving piece 4.1 drives the first connecting rod 4.1.1 and the second connecting rod 4.1.2 to be close and intersected, and pulls the bottom plate 2.2 to move towards the inner side of the bottom frame 2, when the supporting plate 3 moves out of the bottom frame 2, the driving piece 4.1 drives the first connecting rod 4.1.1 and the second connecting rod 4.1.2 to be opened to be collinear, so as to drive the bottom plate 2.2 to slide relative to the bottom frame 2, the displacement of the driving end of the driving piece 4.1 can be amplified by arranging the connecting rod assembly, in the space of the base 2.3 with limited width, the translation driving plate 4.2 can have larger translation stroke.

The foregoing is illustrative of the preferred embodiments of the present invention only, and is not to be construed as limiting the claims. The present invention is not limited to the above embodiments, and the specific structure thereof is allowed to be changed. All changes which come within the scope of the independent claims of the invention are to be embraced within their scope.

Claims (10)

1. A buttock plate mechanism for a nursing bed comprises two buttock plates, wherein the two buttock plates are hinged, a defecation hole is formed in the center of each buttock plate, a bottom frame is arranged below each buttock plate and comprises a bottom plate and a base, the base is fixedly connected with the buttock plates and is in sliding connection with the base, a supporting plate and a driving assembly are arranged in the bottom frame and used for driving the supporting plate to vertically move to the defecation hole after parallel movement is carried out in the bottom frame, the driving assembly comprises a driving piece and a translation driving plate arranged on the bottom plate, a lifting plate, a scissor lifting structure and a linkage structure, the translation driving plate is pushed by the driving piece to translate, the lifting plate is arranged on the translation driving plate in a lifting mode through the scissor lifting structure, the linkage structure is arranged between the translation driving plate and the lifting plate, and limits the lifting plate to lift up relative to the translation driving plate in the parallel movement process, and after the parallel movement of the supporting plate is finished, the limit is released so that the lifting plate is lifted relative to the translation driving plate through the scissor lifting structure.

2. The hip plate mechanism for a nursing bed as set forth in claim 1, wherein: the scissor lifting structure comprises a first fork arm, a second fork arm, a first scissor slide rail, a second scissor slide rail and a top plate, wherein the middle parts of the first fork arm and the second fork arm are hinged, the fixing part of the first scissor slide rail is arranged on the bottom plate, the sliding part of the first scissor slide rail is arranged on the translation drive plate, the fixing part of the second scissor slide rail is arranged on the top plate, the sliding part of the second scissor slide rail is arranged on the lifting plate, one end of the first fork arm is hinged to the lifting plate, the other end of the first fork arm is hinged to the bottom plate, one end of the second fork arm is hinged to the translation drive plate, and the other end of the second fork arm is hinged to the top plate.

3. The hip plate mechanism for a nursing bed as set forth in claim 1, wherein: the bottom plate is connected with the base in a sliding mode through a first sliding rail, the setting direction of the first sliding rail is the same as the pushing direction of the driving piece, the fixing portion of the first sliding rail is arranged on the base, and the moving portion of the first sliding rail is arranged on the bottom plate.

4. The hip plate mechanism for a nursing bed as set forth in claim 3, wherein: the linkage structure is a magnetic attraction part, the magnetic attraction part is arranged on the lifting plate and is magnetically attracted and matched with the bottom plate, the magnetic attraction part attracts the bottom plate and the lifting plate to attract the lifting plate when the driving part drives the translation driving plate to move in parallel, so that the supporting plate is firstly pushed continuously through the first sliding rail and the driving part and overcomes the attraction force of the magnetic attraction part, and the lifting plate is lifted through the shear fork lifting structure relative to the translation driving plate to lift the supporting plate so as to realize the lifting of the supporting plate.

5. The hip plate mechanism for a nursing bed as set forth in claim 4, wherein: the suction force of the magnetic suction piece is greater than the friction force between the fixed part and the sliding part of the first sliding rail.

6. The hip plate mechanism for a nursing bed as set forth in claim 2, wherein: the linkage structure comprises a clamping piece and a stopping piece, wherein the clamping piece is arranged at the driving end of the driving piece and clamps the translation driving plate and the lifting plate to limit the lifting of the lifting plate relative to the translation driving plate in the supporting plate parallel movement process, the stopping piece is arranged in the bottom frame and is used for limiting the parallel movement of the clamping piece, the clamping piece is limited by the stopping piece and stops translating in the translation driving plate parallel movement process, the driving piece continues to push the translation driving plate to enable the limitation of the clamping piece on the translation driving plate and the lifting plate to be removed, and then the driving piece continues to push the lower lifting plate to upwards lift through the scissor lifting structure relative to the translation.

7. The hip plate mechanism for a nursing bed as set forth in claim 6, wherein: an elastic piece is arranged between the clamping piece and the driving end of the driving piece, and the elastic piece drives the clamping piece to enable the clamping piece to have a tendency of clamping towards the lifting plate.

8. The hip plate mechanism for a nursing bed as set forth in claim 6, wherein: the bottom plate bottom surface is equipped with limit structure, limit structure includes gag lever post, stopper, unblock piece, the gag lever post middle part is articulated, the one end of gag lever post is spacing end, the other end of gag lever post is the execution end, spacing end department is equipped with the spacing groove, the stopper sets up on the base, the spacing piece immigration spacing inslot when fastener and stopper cooperation, bottom plate and base are spacing each other, lifter plate one side is equipped with the unblock piece down, the lifter plate descends, roof whereabouts to and unlocks the piece and promotes the execution end and remove in order to relieve the cooperation of spacing groove and stopper when offsetting with the translation drive plate, and driving piece drive translation drive plate drives layer board to initial position.

9. The hip plate mechanism for a nursing bed as set forth in claim 8, wherein: the limiting structure comprises an extension bar and an ejector block, one end of the ejector block penetrates through the bottom of the bottom plate and then is exposed on the upper surface of the bottom plate and matched with the unlocking block, the lower portion of the other end of the ejector block is hinged to the bottom plate, the upper portion of the other end of the ejector block is hinged to the extension bar, and the other end of the extension bar is connected with the limiting bar.

10. The hip plate mechanism for a nursing bed as set forth in claim 1, wherein: the driving piece is connected with the translation drive plate through a connecting rod assembly, the connecting rod assembly comprises a first connecting rod and a second connecting rod, one end of the first connecting rod is hinged to the base, the other end of the first connecting rod is hinged to the driving end of the driving piece and one end of the second connecting rod, and the other end of the second connecting rod is hinged to the translation drive plate.

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