CN201131864Y - Rollover Mechanism of Dual-axis Synchronous Output Driven by Electric Nursing Sheets - Google Patents

Abstract

The utility model is a single-drive double-axis synchronous output rollover mechanism for an electric nursing bed, which is composed of a combined bed board, a linear push rod, a connecting rod mechanism and a frame; the combined bed board includes a three-fold back bed board, Three-fold four-piece buttock bed board and three-fold leg bed board; linear push rods and link mechanisms are arranged between the middle bed frame and the top bed frame, and the link mechanism includes connecting rod I to connecting rod IV, connecting rods I to the connecting rod III and the frame; the push of the linear push rod makes the connecting rod mechanism and the crank crutches on the same side hold up the back and buttock plate of this side to turn sideways at a large angle; The crank crutches simultaneously hold up the back and hip plate on this side and turn sideways at a small angle together to realize the required rollover posture of the human body. The utility model realizes the side rotation of the electric nursing bed sheet powered by double-axis linkage, increases functions, reduces cost, improves safety and reliability, and is more conducive to popularization and mass production of the electric nursing bed.

Description

Rollover Mechanism of Dual-axis Synchronous Output Driven by Electric Nursing Sheets

【Technical field】

The utility model relates to an electric nursing bed in the technical field of service robots, in particular to a single-drive double-axis synchronous output rollover mechanism for the electric nursing bed.

【Background technique】

The nursing bed is a service robot that can improve the self-care ability of bedridden elderly or patients, reduce the work intensity of nursing staff, and reduce the worries of family members. As people's life expectancy continues to increase, the aging population in society is increasing, and the demand for nursing beds is also increasing. With the development of technology and society's attention to the elderly and bedridden patients, there are more and more functional nursing beds, which provide various conveniences for the life and treatment of the elderly or bedridden patients.

At present, the electric nursing bed technologies related to the present invention mainly include: one is to use electric or manual methods to drive the corresponding parts of the bed board to move through the transmission chain, so that the human body is in a sitting or lying posture; After the moment, the connecting rod mechanism is driven to drive the corresponding part of the bed board to move, so as to realize the transformation of the bedridden person's body position.

The deficiency that existing electric nursing bed exists is:

(1) The chain transmission does not have the self-locking function, and the bed board moving cannot be in a locked static state when the motor is powered off, which will affect the rest of the bedridden person.

(2) The chain drive is noisy and prone to tooth jumping, which affects the safety of the nursing bed.

(3) Driven by a servo motor, because the price of the servo motor is more expensive, the cost of the electric nursing bed is too high, so it is difficult to popularize.

(4) The structure of the left and right double-folding rollover bed boards of the nursing bed is unreasonable. When rolling over, the human body and the mattress will slide to the stationary side due to no obstruction, so that the rollover function cannot be well realized.

(5) The turning mechanism adopts a link mechanism with a single motor input and a single shaft output. One motor can only drive one side of the bed board, and the energy saving effect is poor.

【Content of utility model】

The purpose of the utility model is to overcome the deficiencies of the prior art, provide a single-drive double-axis synchronous output rollover mechanism for the electric nursing bed, change the deficiencies in the design of the motion function of the existing electric nursing bed, and improve the use of the nursing bed. The reliability of the product reduces the cost of the product and is conducive to the promotion of the electric nursing bed.

In order to achieve the above purpose, the rollover mechanism driven by the electric nursing bed sheet of the utility model is composed of a combined bed board, a linear push rod, a plane linkage and a frame. The combined bed board is composed of a back bed board, a buttocks bed board and leg bed boards, the frame relates to the middle bed frame and the top bed frame, which is characterized in that: the back bed board is composed of independent right back side board, left back side board and middle back board; The buttock side panel, the left hip side panel, the middle upper hip panel and the middle lower hip panel, and the leg bed panel is composed of independent right leg side panel, left leg side panel and middle leg panel; The bolts are hinged; the linear push rod and the link mechanism are arranged under the combined bed board, between the middle bed frame and the top bed frame, and the link mechanism includes: connecting frame rod I, connecting frame rod II, connecting frame rod III, connecting rod IV, connecting rod I, connecting rod II, connecting rod III, middle bed frame, top bed frame; Connection, connecting rod I is connected with connecting rod II through connecting rod I, the push of the linear push rod makes connecting rod II move around the side turning axis of this side, and the back bed board and The buttocks and bed boards roll over together at a large angle; at the same time, the connecting rod I is connected with the connecting rod III through the connecting rod II, and the connecting rod III is connected with the connecting rod IV through the connecting rod III. The push of the linear push rod makes the connecting rod The frame bar IV moves around the side turning axis on the other side, and the back bed board and the buttocks bed board on this side are rolled over at a small angle together by the bell crank on this side.

There are two sets of the connecting rod mechanism, one set promotes the large-angle rollover of the right bed board, and the other set promotes the large-angle rollover of the left bed board.

The utility model contains two side turning shafts, which are arranged at the joints of the backboard, the hip board, the middle backboard and the middle hip board on the same side, one is arranged on the right side of the middle backboard of the nursing bed, and the other is arranged on the nursing bed Left side of the middle backplane.

The connecting rod is a rotating member connected to the middle bed frame or the top bed frame at one end, and the connecting rod I and the connecting rod III are connected with the middle bed frame; the connecting rod II, the connecting rod IV are connected with the top bed frame connect.

The large-angle rollover of the back bed board and buttock bed board on one side can reach 85°; the small-angle rollover of the back bed board and hip bed board on the other side can reach 85° 15°; large-angle lateral rotation is carried out synchronously with small-angle lateral rotation.

The bell crank is arranged under the frame of the back side plate and the buttocks side plate, and supports the back side plate and the buttocks side plate on one side at the same time.

The linear push rod is composed of a 24V voltage motor, a worm gear mechanism and a trapezoidal screw mechanism; ) is consistent with the entire nursing bed bed surface for people to lie flat.

The beneficial effects of the utility model are:

(1) Changed the deficiencies in the motion function design of the existing electric nursing bed, and realized that the electric nursing bed can be turned over safely - the left and right bed boards can be turned sideways synchronously, and one side can be turned sideways by a large amount to make the human body turn over In the required body posture, the other side is slightly turned sideways so that the person and the mattress do not move outward.

(2) A set of rollover mechanism adopts a linear push rod and an output of a matching power supply to realize the synchronous output of two axes (side rollover axis), saving a set of electric devices.

(3) The servo motor is replaced by a linear push rod, and a plane hinge mechanism is used, and the transmission mechanism, frame, bed frame, etc. are made of metal materials and composite materials, and standard bolts and nuts are used for hinge joints, which greatly reduces production costs. , which is conducive to product promotion and industrial production.

(4) The control system is more reasonable and convenient, and can be operated by buttons or by voice; the movement direction of the electric nursing bed can be adjusted arbitrarily, and various adjustments of the body posture of the bedridden person can be realized.

(5) The input voltage of the selected power supply is 220V, and the output is 24V. It can be equipped with batteries to make the electric nursing bed safer and more reliable.

(6) The bed board is designed as a three-fold structure along the width of the bed, which meets the actual needs of the human body when turning over, and the human body can easily realize free rotation when turning sideways.

【Description of drawings】

Accompanying drawing 1 is the structural representation of the utility model combined bed board;

Accompanying drawing 2 is the utility model electric nursing bed side view structural representation;

Accompanying drawing 3 is the schematic diagram of the fulcrum structure of the rollover mechanism on the middle bed frame;

Accompanying drawing 4 is the schematic structural diagram of the linkage mechanism on the middle bed frame;

Accompanying drawing 5 is the schematic diagram of top bed frame structure;

Accompanying drawing 6 is the schematic diagram of connecting rod II structure;

Accompanying drawing 7 is the structural representation of connecting rod 1;

Accompanying drawing 8 is connecting frame bar 1 structural representation;

Accompanying drawing 9 is the structural representation of connecting rod II;

Accompanying drawing 10 is the structural representation of connecting rod III;

Accompanying drawing 11 is the structural representation of connecting frame rod III;

Accompanying drawing 12 is the schematic diagram of connecting rod IV structure.

The symbols in the attached drawings are:

1. Right back side panel, 2. Middle back panel, 3. Left back side panel, 4. Right hip side panel, 5. Upper middle hip panel, 6. Middle and lower hip panel, 7. Left hip side panel, 8. Left leg side panel, 9, middle and upper leg panel, 10, middle and lower leg panel, 11, right leg side panel, 12, bed side frame, 13, headboard, 14, footboard, 15, bolt, 16, bottom Bed frame, 17, middle layer bed frame, 18, top bed frame; 21, linear push rod, 22, connecting rod I, 23, connecting rod I, 24, connecting rod II, 25, connecting rod II, 26, connecting rod Frame bar III, 27, connecting frame bar IV, 28, connecting rod III.

【Detailed ways】

Provide the specific embodiment of the utility model below in conjunction with accompanying drawing.

The rollover mechanism of the electric nursing bed sheet driven dual-axis synchronous output of the utility model is composed of a combined bed board, a linear push rod, a connecting rod mechanism and a frame (partial structures involving the middle bed frame and the top bed frame).

See attached drawing 1. The combined bed board is composed of a back board, a hip board and a leg board, the back board is composed of an independent right back side board 1, a middle back board 2 and a left back side board 3, and the hip board is composed of an independent right hip side board 4. The middle and upper buttock board 5, the middle and lower hip board 6 and the left hip side board 7, and the leg bed board is composed of an independent left leg side board 8, a middle leg board and a right leg side board 11 (according to the needs of the nursing bed function , the middle leg plate can be designed separately as the middle upper leg plate 9 and the lower middle leg plate 10), and each bed board frame is hinged with bolt 15 standard parts between each bed board frame and the bed board frame.

The back bed board, buttock bed board and leg bed board are designed as a three-fold back bed board along the width, and a three-fold four-piece hip bed board and leg bed board. Their left and right side boards are exactly the same and are symmetrically arranged on both sides of the middle bed board. Wherein, the width of the middle backboard 2 is 15-20 centimeters, which is slightly larger than the shoulder width. When the right side is turned over, the middle bed board is still, the right back side board 1 and the right hip side board 4 are rolled over together through the right crank and the side turning shaft on the same side, and the left back side board 3 and the left hip side board 7 pass through The crank crutch on the left side and the side turning shaft on the same side roll over together; the left and right back and hip side panels turn sideways at large and small angles simultaneously (a big left side turns over and the right side turns small, and the right side turns over big The left side is a small rollover), so that the bed boards on both sides are rolled over or put down synchronously. The range of large-angle rollover can reach 85°, and the range of small-angle rollover can reach 15°.

The back bed board can be raised and leveled by the bolt 15 connection between its frame and the buttocks bed board frame, so as to realize the sitting posture, lying posture or sleeping posture of the bedridden person.

The middle and lower buttock plate 6 is movable and can be moved to facilitate the excretion of the bedridden person.

See attached drawing 2. The electric nursing bed involved in the utility model comprises a bedside retainer 12, a headboard 13, a footboard 14, a bottom bed frame 16, a middle bed frame 17, and a top bed frame 18; Both sides of the bed are respectively provided with two, and the bed side frame 12 can be erected or put down individually by being connected with the top bed frame 18 .

The linear push rod 21 and the link mechanism are arranged under the combined bed board, between the middle bed frame 17 and the top bed frame 18 .

See accompanying drawings 3-5. The utility model is provided with two linear push rods, two sets of link mechanisms and two side turning shafts between the middle bed frame 17 and the top bed frame 18 .

The linear push rod 21 is composed of a 24V voltage motor, a worm gear mechanism and a trapezoidal screw mechanism, and drives the right and left bed boards to move through the connecting rod mechanism, providing linear reciprocating power for the rollover mechanism of the present utility model; when energized, The linear push rod 21 promotes the link mechanism to rotate the bed side plate, and the linear push rod 21 stops when the power is cut off, and each connecting rod of the driven link mechanism has no relative motion and is in a static state. Two linear push rods of the utility model, one mainly pushes the large-angle rollover of the right back side plate 1 and the right hip side plate 4, and one mainly pushes the large-angle rollover of the left back side plate 3 and the left hip side plate 7.

Link mechanism includes: connecting rod I 22 (see accompanying drawing 8), connecting rod I 23 (see accompanying drawing 7), connecting rod II 24 (see accompanying drawing 6), connecting rod II 25 (see accompanying drawing 9) , connecting rod III26 (seeing accompanying drawing 11), connecting rod IV 27 (seeing accompanying drawing 12), connecting rod III 28 (seeing accompanying drawing 10), relate to middle bed frame 17 and top bed frame 18 (mainly as machine Frame part), wherein the link bar is a rotating member that one end is connected with the middle bed frame 17 or the top bed frame 18.

The side turning shafts are arranged at the joints of the same side back board, hip board and middle back board, middle hip board frame, one is arranged on the right side of the nursing bed, and the other is arranged on the left side of the nursing bed.

One end of the linear push rod 21 is fixed on the middle bed frame 17, and the other end is connected with the connecting rod I 22, and the connecting rod I 22 is connected with the connecting rod II 24 by the connecting rod I 23, and the promotion of the linear push rod 21 makes the connecting rod 21 The frame bar II 24 moves around the side turning axis (not shown) on this side, and the back plate and the hip plate of this side are turned over at a large angle together by the bell crank and the side turning axis on this side. At the same time, the connecting rod I 22 is connected with the connecting rod III 26 through the connecting rod II 25, and the connecting rod III 26 is connected with the connecting rod IV 27 through the connecting rod III 28, and the linear push rod 21 Push to make the connecting frame rod IV 27 move around the side turning axis (not shown) on the other side; the back plate and hip plate of this side are rolled over at a small angle together by the bell crank and side turning axis of this side, The amplitude of the rollover can reach 15°; the large and small angle rollovers here are synchronously linked.

Since the left and right backboards and the left and right buttock sideboards are relatively independent bed board modules, the utility model adopts a crank structure, which is set on the left backside board 3 and the left hip sideboard 7, Or under the frame of the right dorsal side plate 1 and the right buttock side plate 4, it is lifted or lowered synchronously as a whole when rolling over.

The connecting rod mechanism of the utility model is a single power input-a linear push rod pushes, and two axes-the side turning shafts on both sides are output synchronously, which realizes the simultaneous turning up and down of the left and right side bed boards. When turning left, the angle of the right bed board is larger than that of the left side, and when turning right, the angle of the left bed board is larger than the right corner; The mattress and the human body do not move outward; the simultaneous coordinated movement of both sides ensures that the bedridden person rolls over to the desired position stably and safely.

The transmission mechanism, frame, and bed frame of the utility model are made of metal materials and/or composite materials, and standard parts such as bolts and nuts are used for hinge joints. The process is simple and convenient, which is beneficial to product promotion and large-scale production.

Claims (10)

1. A rollover mechanism with dual-axis synchronous output driven by an electric nursing bed sheet, which is composed of a combined bed board, a linear push rod, a connecting rod mechanism and a frame. The combined bed board is composed of a back board, a buttock board and a leg board Composed, the frame relates to the middle bed frame and the top bed frame, characterized in that the back bed board is composed of independent right back side board, left back side board and middle back board, and the buttock bed board is composed of independent right hip side board, The left buttock side board, the middle upper hip board and the middle and lower hip board are composed, and the leg bed board is composed of independent right leg side board, left leg side board and middle leg board; each bed board frame and the bed board frame are hinged with bolts; all The above-mentioned linear push rod and link mechanism are arranged under the combined bed board, between the middle bed frame and the top bed frame, and the link mechanism includes: link bar I, link bar II, link bar III, link bar Rod IV, connecting rod I, connecting rod II, connecting rod III, middle bed frame, top bed frame; one end of the linear push rod is fixed on the middle bed frame, and the other end of the linear push rod is connected with the connecting rod I, and the connecting frame The rod I is connected with the connecting rod II through the connecting rod I, and the push of the linear push rod makes the connecting rod II move around the side turning axis of this side, and the back bed board and the buttocks board of the side are formed together by the crank on this side. At the same time, the connecting rod I is connected with the connecting rod III through the connecting rod II, and the connecting rod III is connected with the connecting rod IV through the connecting rod III. The push of the linear push rod makes the connecting rod IV rotate The side turning axis on the other side moves, and the back bed board and the buttocks bed board on this side are rolled over at a small angle together by the bell crank on this side. 2. According to claim 1, the rollover mechanism driven by the electric nursing bed sheet with dual-axis synchronous output is characterized in that there are two sets of the linkage mechanism, one set pushes the large-angle rollover of the right bed board, Another set of high-angle rollovers that push the left side of the bed. 3. The rollover mechanism driven by an electric nursing bed sheet according to claim 1, which is driven by two shafts and synchronously outputted. At the hinges of the boards, one is set on the right side of the nursing bed, and the other is set on the left side of the nursing bed. 4. The rollover mechanism driven by an electric nursing bed sheet according to claim 1, wherein the two-axis synchronous output is characterized in that the connecting rod is a rotating member with one end connected to the middle bed frame or the top bed frame, and the connecting frame Rod I and connecting rod III are connected with the middle bed frame; connecting rod II and connecting rod IV are connected with the top bed frame. 5. According to claim 1, the rollover mechanism driven by the electric nursing bed sheet with dual-axis synchronous output is characterized in that, the large-angle side rotation of the back bed board and the buttock bed board on one side can reach a rollover range of 85 degrees. °. 6. According to claim 1, the rollover mechanism driven by the electric nursing bed sheet with dual-axis synchronous output is characterized in that, the small-angle side rotation of the back bed board and the buttock bed board on the other side can reach up to 15° 7. According to claim 5 or 6, the rollover mechanism driven by the electric nursing bed sheet with dual-axis synchronous output, is characterized in that the large-angle side-turn is performed synchronously with the small-angle side-turn. 8. According to claim 1, the rollover mechanism driven by an electric nursing bed sheet with dual-axis synchronous output is characterized in that the bell crank is set under the frame of the back side plate and the buttocks side plate, and supports the back of one side at the same time. Side panels and hip side panels. 9. The rollover mechanism driven by an electric nursing bed sheet according to claim 1, wherein the linear push rod is composed of a 24V voltage motor, a worm gear mechanism and a trapezoidal screw mechanism. 10. According to claim 1, the rollover mechanism driven by the electric nursing bed sheet with dual-axis synchronous output is characterized in that, when the linear push rod moves to the limit position in the opposite direction, the left and right bed boards are kept in contact with the entire nursing bed surface. unanimous.

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