CN212995626U - Driving assembly for folding bed and folding bed using same - Google Patents

Abstract

The application relates to a driving assembly for a folding bed, which comprises a first driving cylinder and a first force transmission assembly, wherein one end of the first driving cylinder is fixedly provided with a first connecting seat, and the other end of the first driving cylinder is rotatably connected with a second connecting seat; first dowel steel is including the third connecting seat that is used for fixed connection first base, rotate and connect in the first dowel steel of third connecting seat, rotate and connect in the second dowel steel of first dowel steel, first dowel steel fixed connection in second connecting seat, the second dowel steel is used for rotating to connect in back support piece. Through adopting above-mentioned technical scheme, when the folding bed is folding, first power transmission component and first actuating cylinder can be complete be hidden in first base, and first folding unit and second folding unit can coincide completely, and then reduce the shared space after the folding bed is folding. Thereby being convenient for daily placement of the folding bed, and being capable of placing more folding beds in the same space when freight transportation is carried out, and reducing the freight transportation cost.

Description

Driving assembly for folding bed and folding bed using same

Technical Field

The application relates to the field of daily furniture, in particular to a folding bed.

Background

The folding bed has foldability, can be used as a bed when being unfolded, and can be placed at a fixed corner after being folded, so that the folding bed is used in many occasions, such as hospitals, offices and the like.

The conventional folding bed, as shown in fig. 1, includes a first folding unit 1 and a second folding unit 2 rotatably connected to each other.

As shown in fig. 2, the first folding unit 1 comprises a first base 3, a first hip support 4 fixedly mounted on the first base 3, a back support 5 rotating on the first hip support 4 for supporting the back of the human body, and a driving assembly for driving the back support 5 to rotate relative to the first hip support 4, wherein the driving assembly is mounted between the first base 3 and the back support 5, and the first hip support 4 is located at one end of the first folding unit 1 close to the second folding unit 2;

the second folding unit 2 includes a second base 6 rotatably coupled to one end of the first base 3, a second hip support 7 and a leg support assembly 8 mounted on the second base 6.

As shown in fig. 3, the driving assembly includes a thrust cylinder 31, a lifting lug seat 29 rotatably connected to an output shaft of the thrust cylinder 31, a force transmission shaft 28 fixedly connected to the lifting lug seat 29, and a thrust rod 30 fixedly connected to the force transmission shaft 28. The thrust cylinder 31 is an electric cylinder. The cylinder end of the thrust cylinder 31 is rotatably connected to the first base 3, and the output end of the thrust cylinder 31 is rotatably connected to the lug base 29. The force transmission shaft 28 is fixedly connected to one end of the lug seat 29 far away from the thrust cylinder 31. The thrust rod 30 is pivotally connected to the back support 5. The lug seat 29 is integrally arranged in an arc shape.

Let the back support 5 and the first hip support 4 form a plane a and the leg support assembly 8 and the second hip support 7 form a plane B.

When the folding bed is in a lying use state, the plane A is superposed with the plane B, and other soft articles such as a mattress and the like are placed on the plane A and the plane B, so that the folding bed can be used as a bed.

When the folding bed is in a folding state, the plane A and the plane B form an included angle, and the first base 3, the driving assembly and the second base 6 are all located between the plane A and the plane B.

Mainly because the thrust cylinder 31, the lifting lug seat 29 and the thrust rod 30 form a mechanism of triangular connecting rods, even if the back support 5 and the first hip support 4 are located on the same plane, the driving assembly still cannot be hidden in the first base 3, and part of the driving assembly protrudes out of the first base 3. Therefore, when the first folding unit 1 and the second folding unit 2 rotate to be folded, the driving assembly interferes with the second folding unit 2, so that the folding bed cannot be folded to the minimum floor area.

Meanwhile, the specific power of the thrust cylinder 31 is national standard, and the lifting lug seat 29 is difficult to be arranged in a straight rod manner by increasing the power of the thrust cylinder 31, so that the space occupied by the folding bed after being folded is reduced. Since the moment becomes problematic when the arc-shaped lug support 29 is modified to a straight rod type when the thrust cylinder 31 is powered for a certain amount, the force of the thrust cylinder 31 is not sufficient to rotate the back support 5 relative to the first hip support 4.

In view of the above-mentioned related art, the inventor believes that there is a drawback in that the space occupied by the folded folding bed is large.

Disclosure of Invention

In order to reduce the space occupied by the folded bed,

in a first aspect, the present application provides a driving assembly for a folding bed, which adopts the following technical solutions:

a drive assembly for a folding bed, the drive assembly comprising

The first driving cylinder is provided with a first connecting seat at one end, and a second connecting seat at the other end, and the first connecting seat is used for rotationally connecting the first driving cylinder to the first base;

first power transmission subassembly, first power transmission subassembly are used for transmitting the drive power of first actuating cylinder for back support piece, and first power transmission subassembly is including the third connecting seat that is used for the first base of fixed connection, rotate the second dowel steel of connecting in the first dowel steel of first dowel steel, rotation connection in the first dowel steel of third connecting seat, first dowel steel fixed connection in second connecting seat, and the second dowel steel is used for rotating the connection in back support piece.

Through adopting above-mentioned technical scheme, when needs drive back support piece first buttock support piece relatively rotate, the extension of first driving cylinder, first driving cylinder gives drive power of second connecting seat this moment, gives first dowel steel with power transmission through the second connecting seat, and first dowel steel transmits power for back support piece through the second dowel steel to the realization is to back support piece's drive.

A six-connecting-rod structure is formed among the first base, the back supporting piece, the cylinder body of the first driving cylinder, the piston rod of the first driving cylinder, the first force transmission rod and the second force transmission rod, and force provided by the first driving cylinder is amplified through force transmission of the first force transmission rod and the second force transmission rod, so that the first driving cylinder has enough force to push the back supporting piece to rotate relative to the first base. While the first force transfer assembly and the first drive cylinder can be completely hidden within the first seat when the back support is in the same plane as the first hip support. The first folding unit and the second folding unit can be completely overlapped when the folding bed is folded, and therefore the occupied space after the folding bed is folded is reduced. Thereby being convenient for daily placement of the folding bed, and being capable of placing more folding beds in the same space when freight transportation is carried out, and reducing the freight transportation cost.

Preferably, the first force transmission assemblies are provided with two first force transmission assemblies which are respectively positioned at two sides of the first driving cylinder.

Through adopting above-mentioned technical scheme to make back support piece multiple spot atress, and then make drive assembly can be better more stable promote back support piece and rotate relative first buttock support piece.

In a second aspect, the present application provides a folding bed, which adopts the following technical scheme:

a folding bed comprises a first folding unit and a second folding unit which are mutually and rotatably connected;

the first folding unit comprises a first base, a first hip supporting piece fixedly arranged on the first base, a back supporting piece which rotates on the first hip supporting piece and is used for supporting the back of a human body, and a driving assembly used for driving the back supporting piece to rotate relative to the first hip supporting piece, wherein the first hip supporting piece is positioned at one end, close to the second folding unit, of the first folding unit;

the second folding unit comprises a second base rotatably connected to one end of the first base, a second hip support piece fixedly arranged on the second base, and a leg support assembly arranged at one end of the second hip support piece and used for supporting legs of a human body, and the first hip support piece and the second hip support piece form a hip support assembly used for supporting the buttocks of the human body;

when the folding bed is in a folding state, the back support piece and the first hip support piece form a plane A, the leg support assembly and the second hip support piece form a plane B, the plane A is parallel to the plane B and is arranged at intervals with the plane B, and the first base, the driving assembly and the second base are all located between the plane A and the plane B.

Through adopting above-mentioned technical scheme to when making first folding unit and second folding unit be fold condition each other, both are parallel completely, and under equal model this moment, the thickness after folding the folding bed has fallen to 9cm from 15cm, thereby makes the folding bed can be by the thinner of folding, and the shared space is littleer. The average transport cost per folding bed is reduced.

Preferably, the leg support assembly is rotatably connected to the second hip support member, the second folding unit further comprises a force application assembly for driving the leg support assembly to rotate relative to the second hip support member, and the second hip support member is located at one end of the second base close to the first base;

when the folding bed is in a lying use state, the plane A and the plane B are superposed, and the driving assembly and the force application assembly are arranged in a staggered mode.

By adopting the technical scheme, under the condition that the thickness of the folded folding bed is thin enough, the leg support assembly can rotate relative to the second hip support piece, so that a user can have more choices of lying, and the applicability of the folding bed is enlarged.

Preferably, the leg support assembly comprises

A first leg support pivotally connected to the second hip support, the first leg support being located at an end of the second hip support remote from the first hip support;

a second leg support pivotally connected to an end of the first leg support remote from the second hip support;

a connecting rod rotatably connected to the second leg support, both ends of the connecting rod being rotatably connected to the second leg support and the second base, respectively;

the force application assembly includes a second drive cylinder and a second force transfer assembly for transferring the drive force of the second drive cylinder to the first leg support.

Through adopting above-mentioned technical scheme, because the connecting rod is spacing, when first shank support piece rotated, second shank support piece can rotate first shank support piece relatively, made whole shank supporting component form one and fall the V type to let the user bend the knee when the position of sitting state, its shank still can be supported by shank supporting component, has enlarged the suitability and the travelling comfort of this folding bed.

Preferably, one end of the second driving cylinder is rotatably connected to the second base, the second force transmission assembly comprises a fourth connecting seat rotatably connected to the output end of the second driving cylinder, a third dowel bar rotatably connected to the fourth connecting seat, a fourth dowel bar rotatably connected to the third dowel bar and a fifth connecting seat rotatably connected to the third dowel bar, and one end, far away from the third dowel bar, of the fourth dowel bar is rotatably connected to the first leg supporting piece; the fifth connecting seat is fixedly installed on the second base, and a connecting point of the fifth connecting seat and the third dowel bar, a connecting point of the fourth dowel bar and the third dowel bar, and a connecting point of the fourth dowel bar and the first leg supporting piece form a triangle.

Through adopting above-mentioned technical scheme, when needs drive the relative second buttock support piece rotation of shank supporting component, the second driving cylinder extension, the second driving cylinder gives a drive power of fourth connecting seat this moment, transmits power for the third dowel steel through the fifth connecting seat, and the third dowel steel transmits power for first shank support piece through the fourth dowel steel to the realization is to the drive of first shank support piece.

A six-connecting-rod structure is formed among the second base, the first leg supporting piece, the cylinder body of the second driving cylinder, the piston rod of the second driving cylinder, the third dowel bar and the fourth dowel bar, and force provided by the second driving cylinder is amplified through force transmission of the third dowel bar and the fourth dowel bar, so that the second driving cylinder has enough force to push the first leg supporting piece to rotate relative to the second base. And the second force transfer assembly and the second drive cylinder can be completely hidden in the second seat when the first leg support and the second hip support are in the same plane. The first folding unit and the second folding unit can be completely overlapped when the folding bed is folded, and therefore the occupied space after the folding bed is folded is reduced. Thereby being convenient for daily placement of the folding bed, and being capable of placing more folding beds in the same space when freight transportation is carried out, and reducing the freight transportation cost.

Preferably, the fourth connecting seat comprises a mounting seat rotatably connected to the second driving cylinder and a dowel shaft fixedly connected to the third dowel bar, and one end, far away from the second driving cylinder, of the mounting seat is fixedly connected to the outer wall of the dowel shaft.

Through adopting above-mentioned technical scheme, through the dowel shaft, transmit the drive power of second actuating cylinder for the third dowel steel, made things convenient for dodging and arranging of part.

Preferably, the second power transmission assemblies are symmetrically arranged along the central axis of the second driving cylinder, and the power transmission shafts corresponding to the second power transmission assemblies are coaxially arranged and fixedly connected.

Through adopting above-mentioned technical scheme to make first leg support piece multiple spot atress, and then make drive assembly can be better more stable promote first leg support piece relative second buttock support piece and rotate.

Preferably, first base bottom surface and second base bottom surface all are equipped with the installed part that is used for installing the bed foot, set up threaded hole on the installed part.

Through adopting above-mentioned technical scheme, when using, the accessible screw hole is installed the stabilizer blade on first base and second base to with folding bed frame height, improve use comfort.

Preferably, the second leg support has a foot support for supporting the mattress.

Through adopting above-mentioned technical scheme, when the people sits to lie on folding bed, the mattress can butt in the pedal, plays spacing effect, reduces the probability that the mattress removed to the foot, lets the more stable comfortable lying of user on folding bed.

In summary, the present application includes at least one of the following beneficial technical effects:

1. the occupied space is small after being folded, the thickness is reduced from 15cm to 9cm, and the daily storage is convenient;

2. the transportation cost of each folding bed is reduced when large-batch freight is carried out;

3. the use comfort is better;

4. in electronic commerce, express delivery service has strict requirements on size and has a corresponding step charging standard, and size reduction has great significance on reduction of transportation cost of single commodities in electronic commerce transactions.

Drawings

Fig. 1 is a schematic view of a prior art structure.

Fig. 2 is a schematic diagram of a prior art structure for embodying a driving assembly.

FIG. 3 is a partial schematic view of a prior art back support and first hip support;

FIG. 4 is a schematic structural view of the embodiment in a lying position;

FIG. 5 is a side view of the embodiment in a lying position;

FIG. 6 is a bottom view of the embodiment in a flat lying position;

FIG. 7 is a schematic structural view of the embodiment in a folded state;

FIG. 8 is a side view of the embodiment in a folded state;

FIG. 9 is a schematic structural view of the embodiment in a sitting and lying position;

FIG. 10 is a side view of the embodiment in a sitting position;

FIG. 11 is a schematic structural view of the embodiment at the drive assembly;

FIG. 12 is a bottom view of the embodiment in a lying position;

FIG. 13 is a schematic structural view of the embodiment at the force application assembly.

Description of reference numerals: 1. a first folding unit; 2. a second folding unit; 3. a first base; 4. a first hip support; 5. a back support; 6. a second base; 7. a second hip support; 8. a leg support assembly; 9. a first leg support; 10. a second leg support; 11. a connecting rod; 12. a mounting member; 13. pedaling; 14. a first drive cylinder; 15. a first force transfer assembly; 16. a first connecting seat; 17. a second connecting seat; 18. a third connecting seat; 19. A first transfer lever; 20. a second dowel bar; 21. a second drive cylinder; 22. a second force transfer assembly; 23. a fourth connecting seat; 24. a third dowel bar; 25. a fourth dowel bar; 26. a fifth connecting seat; 27. a mounting seat; 28. a force transmission shaft; 29. a lug seat; 30. a thrust rod; 31. and a thrust cylinder.

Detailed Description

The present application is described in further detail below with reference to figures 1-13.

The embodiment of the application discloses a folding bed. Referring to fig. 4, a folding bed includes a first folding unit 1 and a second folding unit 2 rotatably coupled to each other.

Referring to fig. 4 and 5, the first folding unit 1 includes a first base 3, a first hip support 4 fixedly mounted on the first base 3, a back support 5 rotated at one end of the first hip support 4 for supporting the back of a human body, and a driving assembly for driving the back support 5 to rotate relative to the first hip support 4.

Referring to fig. 4 and 5, the second folding unit 2 includes a second base 6 rotatably coupled to one end of the first base 3, a second hip support 7 fixedly mounted on the second base 6, a leg support assembly 8 rotatably coupled to one end of the second hip support 7 for supporting the legs of the human body, and a force application assembly. The first hip support 4 and the second hip support 7 constitute a hip support assembly for supporting the buttocks of a human body.

Referring to fig. 4 and 5, the leg support assembly 8 includes a first leg support 9 pivotally connected to the second hip support 7, a second leg support 10 pivotally connected to an end of the first leg support 9 remote from the second hip support 7, and a connecting bar 11 pivotally connected to the second leg support 10. The first leg support 9 is located at an end of the second hip support 7 remote from the first hip support 4. The connecting rod 11 is pivotally connected at both ends to the second leg support 10 and the second base 6, respectively. The forcing mechanism is used to drive the first leg support 9 in rotation relative to the second hip support 7.

Referring to fig. 6, the bottom surfaces of the first base 3 and the second base 6 are provided with mounting pieces 12 for mounting bed legs, and the mounting pieces 12 are provided with threaded holes.

The folding bed has three states, namely a lying state, a sitting state and a folding state. Let the plane formed by the back support 5 and the first hip support 4 be the a-plane and the plane formed by the leg support assembly 8 and the second hip support 7 be the B-plane.

Referring to fig. 7 and 8, when the folding bed is in the folded state, the plane a is parallel to the plane B and spaced from the plane B, the first base 3, the driving assembly, the second base 6 and the force application assembly are all located between the plane a and the plane B, and the driving assembly and the force application assembly are arranged in a staggered manner. The whole folding bed is in a completely folded state, and the whole thickness is only 9 cm. Can be stored or transported well. Because the freight is calculated according to the number of containers of the container, the folded bed occupies small volume after being folded, one container can contain more folded beds, and the transportation cost of a single folded bed is reduced.

Referring to fig. 4 and 5, when the folding bed is in the lay flat arrangement, the a plane is parallel to and overlaps the B plane. I.e. the back support 5, the first hip support 4, the second hip support 7, the first leg support 9, the second leg support 10 all lie in one plane. And bed legs are arranged on the mounting piece 12 through threaded holes. So that the folding bed is lifted off the ground. At the moment, soft articles such as mattresses and the like are directly placed on the plane A and the plane B to be used as a normal bed, and a user directly lies on the folding bed flatly, so that the folding bed is comfortable to use.

Referring to fig. 9 and 10, the back support 5 is inclined with respect to the first hip support 4 when the folding bed is in the sitting and lying position. The second hip support 7 is in the same plane as the first hip support 4. The first leg support 9 is arranged obliquely relative to the second hip support 7, the first leg support 9 and the second leg support 10 forming an inverted V-shape. The user can sit and lie on the folding bed, and the bent legs can be well supported, so that the folding bed is comfortable to use. To improve comfort, the second leg support 10 is provided with a foot support 13 on its upper end to limit movement of the mattress towards the foot.

Specifically, referring to FIG. 11, the drive assembly includes a first drive cylinder 14 and a first force transfer assembly 15. The first drive cylinder 14 is an electric cylinder. The first force transmission assemblies 15 are arranged in two numbers and are respectively located on two sides of the first driving cylinder 14, and the two first force transmission assemblies 15 are symmetrically arranged along the central axis of the first driving cylinder 14. The first force transfer assembly 15 is adapted to transfer the driving force of the first driving cylinder 14 to the back support 5 for rotating the back support 5 relative to the first hip support 4.

Referring to fig. 11, a first connecting seat 16 is fixedly installed at one end of the first driving cylinder 14, and a second connecting seat 17 is rotatably connected at the other end of the first driving cylinder 14, wherein the first connecting seat 16 is used for rotatably connecting the first driving cylinder 14 to the first base 3. The first force transfer assembly 15 includes a third coupling seat 18 for fixedly coupling the first base 3, a first force transfer lever 19 rotatably coupled to the third coupling seat 18, and a second force transfer lever 20 rotatably coupled to the first force transfer lever 19. The first force transmission lever 19 is fixedly connected to the second connecting socket 17 and the second force transmission lever 20 is adapted to be pivotally connected to the back support 5.

When the back support 5 needs to be driven to rotate relative to the first hip support 4, the first driving cylinder 14 extends, at the moment, the first driving cylinder 14 gives a driving force to the second connecting seat 17, the force is transmitted to the first force transmission rod 19 through the second connecting seat 17, and the first force transmission rod 19 transmits the force to the back support 5 through the second force transmission rod 20, so that the back support 5 is driven. After the exercise, the state of the folding chair refers to fig. 12.

Referring to figure 13, the force applying assembly comprises a second drive cylinder 21 and a second force transfer assembly 22. The second driving cylinder 21 is an electric cylinder. The two second force transmission assemblies 22 are respectively arranged at two sides of the second driving cylinder 21, and the two second force transmission assemblies 22 are symmetrically arranged along the central axis of the second driving cylinder 21. The second force transfer assembly 22 is adapted to transfer the driving force of the second driving cylinder 21 to the first leg support 9 for rotating the first leg support 9 relative to the second hip support 7.

Referring to fig. 13, one end of the second driving cylinder 21 is rotatably coupled to the second base 6. The second force transmission assembly 22 includes a fourth coupling seat 23 rotatably coupled to an output end of the second driving cylinder 21, a third dowel 24 rotatably coupled to the fourth coupling seat 23, a fourth dowel 25 rotatably coupled to the third dowel 24, and a fifth coupling seat 26 rotatably coupled to the third dowel 24.

Referring to fig. 13, the fourth connecting block 23 includes a mounting block 27 rotatably connected to the second driving cylinder 21 and a force transmission shaft 28 fixedly connected to the third force transmission rod 24, and one end of the mounting block 27 away from the second driving cylinder 21 is fixedly connected to the outer wall of the force transmission shaft 28. The force transmission shafts 28 corresponding to the two second force transmission assemblies 22 are coaxially arranged and fixedly connected. The end of the fourth dowel 25 remote from the third dowel 24 is pivotally connected to the first leg support 9. The fifth connecting seat 26 is fixedly installed on the second base 6. The connection point of the fifth connection socket 26 with the third force transfer lever 24, the connection point of the fourth force transfer lever 25 with the third force transfer lever 24, and the connection point of the fourth force transfer lever 25 with the first leg support 9 form a triangle.

When the leg support assembly 8 needs to be driven to rotate relative to the second hip support 7, the second driving cylinder 21 extends, the second driving cylinder 21 provides a driving force for the fourth connecting seat 23, the force is transmitted to the third force transmission rod 24 through the fifth connecting seat 26, the third force transmission rod 24 transmits the force to the first leg support 9 through the fourth force transmission rod 25, and therefore the first leg support 9 is driven. After the exercise, the state of the folding chair refers to fig. 12.

A six-bar linkage is formed among the first base 3, the back support 5, the cylinder body of the first drive cylinder 14, the piston rod of the first drive cylinder 14, the first transfer rod 19, and the second transfer rod 20, and a six-bar linkage is formed among the second base 6, the first leg support 9, the cylinder body of the second drive cylinder 21, the piston rod of the second drive cylinder 21, the third transfer rod 24, and the fourth transfer rod 25. The design of the two six-bar linkage amplifies the force, so that the first driving cylinder 14 and the second driving cylinder 21 have enough force to push the required parts. Meanwhile, when the folding bed needs to be in a folding state, the driving assembly and the force application assembly can be hidden in the first base 3 and the second base 6. When the folding bed is folded, the first folding unit 1 and the second folding unit 2 can be completely overlapped, so that the occupied space after the folding bed is folded is reduced. Thereby being convenient for daily placement of the folding bed, and being capable of placing more folding beds in the same space when freight transportation is carried out, and reducing the freight transportation cost.

The implementation principle of the folding bed in the embodiment of the application is as follows:

when normally placed or shipped, the folding bed is in a folded state, see fig. 7. The first and second drive cylinders 14 and 21 are in the shortest length state. The first folding unit 1 is folded on the second folding unit 2. The first base 3, the driving component, the second base 6 and the force application component are all located between the plane A and the plane B.

When the folding bed is needed to sleep or lie flat, the folding bed is needed to be adjusted from a folding state to a lying state, and the specific state refers to fig. 4. It is now necessary to turn the second folding unit 2 with respect to the first folding unit 1 until the folding bed is fully open, at which point the a-plane is parallel to and overlaps the B-plane. Then, the bed legs are arranged on the mounting pieces 12, and the folding bed is lifted off the ground.

When the folding bed needs to be used for sitting, lying and leisure, the folding bed needs to be adjusted from a lying state to a sitting and lying state, and the specific state refers to fig. 9. Referring to fig. 6 and 13, when the first driving cylinder 14 is activated, the piston rod of the first driving cylinder 14 moves relative to the cylinder body of the first driving cylinder 14 to extend the first driving cylinder 14, and the back support 5 is driven to rotate relative to the first hip support 4 by the first force transfer assembly 15, so that the angle of the back support 5 relative to the first hip support 4 is adjusted to a proper angle. Allowing the back of the user to rest comfortably on the back support 5.

Referring to fig. 6 and 13, if the legs are bent during sitting and lying down, the second driving cylinder 21 is activated, the piston rod of the first driving cylinder 14 moves relative to the cylinder body of the first driving cylinder 14 to extend the first driving cylinder 14, and the first leg support 9 is driven to rotate relative to the second hip support 7 by the second force transmission assembly 22, so as to adjust the angle of the first leg support 9 relative to the second hip support 7 to a proper angle. Meanwhile, due to the limitation of the connecting rod 11, the second leg supporting part 10 can rotate relative to the first leg supporting part 9, at the moment, the first leg supporting part 9 and the second leg supporting part 10 form an inverted V shape, so that the bent legs of a user can be well supported, and the use is comfortable.

When it is desired to return the folding bed from the lying position to the folded position, the first actuating cylinder 14 and the second actuating cylinder 21 are activated, both being shortened to a position in which their length is minimal. At this time, the A plane and the B plane are restored to the state of the plane overlapping, namely, the lying state. Then the bed legs are detached, and the first folding unit 1 and the second folding unit 2 are relatively rotated until the first folding unit and the second folding unit are abutted. The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims (10)

1. A drive assembly for a folding bed, characterized by: the drive assembly comprises

The device comprises a first driving cylinder (14), wherein one end of the first driving cylinder (14) is fixedly provided with a first connecting seat (16), the other end of the first driving cylinder (14) is rotatably connected with a second connecting seat (17), and the first connecting seat (16) is used for rotatably connecting the first driving cylinder (14) to a first base (3);

first power transmission subassembly (15), first power transmission subassembly (15) are used for transmitting the drive power of first actuating cylinder (14) for back support piece (5), first power transmission subassembly (15) are including third connecting seat (18) that are used for first base (3) of fixed connection, rotate first dowel steel (19) of connecting in third connecting seat (18), rotate second dowel steel (20) of connecting in first dowel steel (19), first dowel steel (19) fixed connection is in second connecting seat (17), second dowel steel (20) are used for rotating to connect in back support piece (5).

2. A drive assembly for a folding bed as claimed in claim 1, wherein: the first force transmission assemblies (15) are provided with two parts and are respectively positioned at two sides of the first driving cylinder (14).

3. A folding bed is characterized in that: comprises a first folding unit (1) and a second folding unit (2) which are rotationally connected with each other;

the first folding unit (1) comprises a first base (3), a first hip support (4) fixedly mounted on the first base (3), a back support (5) rotatable on the first hip support (4) for supporting the back of a person, a driving assembly for driving the back support (5) to rotate relative to the first hip support (4), the first hip support (4) being located at an end of the first folding unit (1) adjacent to the second folding unit (2), wherein the driving assembly is as defined in any one of claims 1-2;

the second folding unit (2) comprises a second base (6) rotatably connected to one end of the first base (3), a second hip support piece (7) fixedly installed on the second base (6), and a leg support assembly (8) installed at one end of the second hip support piece (7) and used for supporting legs of a human body, wherein the first hip support piece (4) and the second hip support piece (7) form a hip support assembly used for supporting the hip of the human body;

when the folding bed is in a folding state, the back support piece (5) and the first hip support piece (4) form a plane A, the leg support component (8) and the second hip support piece (7) form a plane B, the plane A is parallel to the plane B and arranged at intervals with the plane B, and the first base (3), the driving component and the second base (6) are located between the plane A and the plane B.

4. A folding bed as claimed in claim 3, wherein: the leg supporting assembly (8) is rotatably connected to the second hip supporting member (7), the second folding unit (2) further comprises a force application assembly for driving the leg supporting assembly (8) to rotate relative to the second hip supporting member (7), and the second hip supporting member (7) is located at one end, close to the first base (3), of the second base (6);

when the folding bed is in a lying use state, the plane A and the plane B are superposed, and the driving assembly and the force application assembly are arranged in a staggered mode.

5. A folding bed according to claim 4, characterized in that: the leg support assembly (8) comprises

A first leg support (9) pivotally connected to the second hip support (7), the first leg support (9) being located at an end of the second hip support (7) remote from the first hip support (4);

a second leg support (10) pivotally connected to the first leg support (9) at an end remote from the second hip support (7);

a connecting rod (11) rotatably connected to the second leg support (10), both ends of the connecting rod (11) being rotatably connected to the second leg support (10) and the second base (6), respectively;

the force application assembly comprises a second drive cylinder (21) and a second force transmission assembly (22) for transmitting the driving force of the second drive cylinder (21) to the first leg support (9).

6. A folding bed according to claim 5, wherein: one end of a second driving cylinder (21) is rotatably connected to the second base (6), a second force transmission assembly (22) comprises a fourth connecting seat (23) rotatably connected to the output end of the second driving cylinder (21), a third dowel bar (24) rotatably connected to the fourth connecting seat (23), a fourth dowel bar (25) rotatably connected to the third dowel bar (24) and a fifth connecting seat (26) rotatably connected to the third dowel bar (24), and one end, far away from the third dowel bar (24), of the fourth dowel bar (25) is rotatably connected to the first leg support (9); the fifth connecting seat (26) is fixedly arranged on the second base (6), and a connecting point of the fifth connecting seat (26) and the third dowel bar (24), a connecting point of the fourth dowel bar (25) and the third dowel bar (24), and a connecting point of the fourth dowel bar (25) and the first leg supporting piece (9) form a triangle.

7. A folding bed according to claim 6, characterized in that: the fourth connecting seat (23) comprises a mounting seat (27) which is rotatably connected to the second driving cylinder (21) and a dowel shaft (28) which is fixedly connected to the third dowel bar (24), and one end, far away from the second driving cylinder (21), of the mounting seat (27) is fixedly connected to the outer wall of the dowel shaft (28).

8. A folding bed as claimed in claim 7, wherein: the two second force transmission assemblies (22) are symmetrically arranged along the central axis of the second driving cylinder (21), and the two force transmission shafts (28) corresponding to the second force transmission assemblies (22) are coaxially arranged and fixedly connected.

9. A folding bed as claimed in claim 3, wherein: first base (3) bottom surface and second base (6) bottom surface all are equipped with installed part (12) that are used for installing the bed foot, set up threaded hole on installed part (12).

10. A folding bed according to claim 5, wherein: the upper end surface of the second leg support (10) is provided with a foot support (13) used for limiting the movement of the mattress to the foot.

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