Damping control box with suspension system and inflatable bed using damping control box

Abstract

The utility model relates to the field of air cushion beds, in particular to a damping control box with a suspension system and an inflatable bed using the damping control box. The utility model provides a damping control box with a suspension system, which comprises a hollow shell, an air pump, a main air box, an electromagnetic valve and a control circuit board, the air pump, the main air box and the electromagnetic valve are arranged in the hollow shell, and the air pump is communicated with the main air box and the electromagnetic valve through an air path. The control circuit board can control the air pump and the electromagnetic valve to work, a suspension system with a suspension frame is arranged in a cavity of the shell, the air pump, the main air box, the electromagnetic valve and the control circuit board are all arranged on the suspension frame, and the suspension frame can be suspended in the inner cavity of the shell through the suspension system for shock absorption. The air pump, the air box and the like are integrally hung and installed in the control box through the hanging system, vibration generated by work of the air pump and the like and influences on the shell are relieved through damping of the hanging system, and therefore the sleep quality is improved. The utility model further provides an inflatable bed using the control box, and the inflatable bed is silent in use and good in sleep quality.

Description

Technical Field

[0001] The utility model relates to the field of air mattresses, in particular to a shock-absorbing control box with a suspension system and an air mattress using the same. Background Art

[0002] Existing air mattresses use a control box to inflate the airbags. The shell of the control box is equipped with a control circuit board and an air pump assembly and a solenoid valve controlled by the control circuit board. The air pump assembly includes an air pump, an air box, and a connecting air path. The control circuit board can control the opening and closing of the air pump and the solenoid valve, so that the gas output by the air pump is buffered by the air box and then filled into the airbags of the bed core for support or massage. The air box can buffer the high-flow air output by the air pump, thereby reducing the noise generated by the excessive air flow speed, achieving a silent noise reduction effect. The existing air pump assembly is rigidly fixed with screws in the shell. The vibration generated when the air box buffers the air flow will be directly transmitted to the shell and transmitted to the outside through the shell. When lying on the mattress, the vibration of the control box and the resulting noise can be clearly felt, which seriously affects sleep. Utility Model Content

[0003] In order to solve the technical problem that the control box of the existing inflatable bed will affect sleep due to the vibration of the air box, the utility model provides a shock-absorbing control box with a suspension system and an inflatable bed using the same. The suspension system is adopted inside the shell of the control box, and the air pump, air box, etc. that may generate vibration are installed in the inner cavity in an integrated suspension manner. The suspension system is used for shock absorption, which reduces the vibration effect of the working vibration of the air pump and air box on the shell, thereby improving the sleep quality of the inflatable bed.

[0004] The utility model solves the technical problem by adopting a technical solution: a shock-absorbing control box with a suspension system, comprising a hollow shell and an air pump, a main air box, a solenoid valve and a control circuit board arranged therein, the air pump and the main air box and the solenoid valve are connected through an air path, and the control circuit board can control the air pump and the solenoid valve to work, and the characteristic is that a suspension system with a suspension is arranged in the cavity of the shell, the air pump, the main air box, the solenoid valve and the control circuit board are all arranged on the suspension, and the suspension system can suspend the suspension in the inner cavity of the shell for shock absorption. The utility model installs the main air box and other components that will vibrate during operation through the suspension system to reduce the impact of the vibration on the shell, the air pump, the main air box and the solenoid valve that will vibrate during operation are all arranged on the suspension to form an integrated suspension, and are suspended in the inner cavity of the shell of the control box through the suspension system, the integrated suspension has no contact with the shell, and the vibration generated during operation can be absorbed by the suspension system, so that the vibration transmitted to the outside of the control box and the noise brought by it are reduced accordingly, the control box has a good mute effect when working, and can effectively improve the quality of sleep.

[0005] As a further improvement and supplement to the above technical solution, the utility model adopts the following technical measures: the suspension system includes a suspension, a cantilever and a fixing frame, the solenoid valve and the main air box are fixedly connected to the fixing frame, the fixing frame is connected to the suspension, the air pump and the control circuit board are arranged on the suspension, the suspension is mounted on the cantilever through a plurality of shock-absorbing feet, and the cantilever is fixedly connected to the shell. The suspension connecting the air pump and the control circuit board is mounted on the cantilever through shock-absorbing feet, the solenoid valve and the main air box are connected to the suspension through the fixing frame, the suspension is mounted on the cantilever fixed to the shell by using shock-absorbing feet, and the shock-absorbing feet can play a role in shock absorption and noise reduction.

[0006] The end of the fixing frame is provided with an outwardly extending folded edge connected to the main gas box, and the top of the main gas box is provided with a lug matching the end of the folded edge, and the lug can be attached to the end of the folded edge and fixed by screws. The fixing frame is installed and fixed to the main gas box by the folded edge extending outward from the end, and the main gas box is provided with a lug at the top end to fit the end of the folded edge and fixed by screws, and both the lug and the end of the folded edge have mounting holes for screws.

[0007] There are two cantilevers and they are parallel and equal in height. The two cantilevers are arranged below the two sides of the suspension. The cantilevers are fixed to the shell through screws installed at both ends. The two sides of the suspension extend with integrated wing plates to match the two cantilevers. The wing plates are connected to the corresponding cantilevers through shock-absorbing feet. There are two cantilevers and they are arranged below the two sides of the suspension to stably support and erect the suspension. Two wing plates are also extended from the corresponding suspension. Each wing plate is connected to the corresponding cantilever through a shock-absorbing foot, so that the suspension is erected on the cantilever. Only the two ends of the cantilever are fixed to the shell, and the rest of the cantilever is also suspended in the cavity.

[0008] The bottom surface of the wing plate is provided with a mounting groove for accommodating the cantilever. The cantilever is connected to the wing plate through the shock-absorbing foot in the mounting groove, and the two ends of the cantilever extend from the openings at both ends of the mounting groove. The cantilever is inserted into the mounting groove on the bottom surface of the wing plate, which reduces the vertical height occupied by the two docking, and the structure is more compact, so that other components can be installed in the control box; the openings at both ends of the mounting groove allow the two ends of the cantilever to extend and be fixed to the shell.

[0009] The fixing frame is hung on the suspension frame through the first shock-absorbing belt. The upper and lower ends of the first shock-absorbing belt are respectively clamped and positioned with the suspension frame and the fixing frame. The suspension frame and the fixing frame are both provided with a first flat hole matching the first shock-absorbing belt. The first shock-absorbing belt can change the hanging height of the fixing frame relative to the suspension frame by adjusting the clamping length of the end portion passing through the first flat hole. The first shock-absorbing belt is made of elastic material, and can buffer and absorb vibrations through deformation and shaking, and further reduce shock and noise for the solenoid valve and the main air box; during installation, one end of the first shock-absorbing belt passes through the corresponding first flat hole and is clamped with the suspension or the fixing frame, and the fixing frame is hung on the suspension. At the same time, the first shock-absorbing belt can adjust the clamping length of the end portion passing through the first flat hole, and change the height of the fixing frame hanging on the suspension and the shock-absorbing effect.

[0010] The air pump is hung on the suspension through a plurality of parallel second shock-absorbing belts, the second shock-absorbing belts bypass the bottom of the air pump, and the two ends of the second shock-absorbing belts pass upward through the second flat holes opened on both sides of the suspension to be clamped and positioned with the suspension. The second shock-absorbing belt can change the hanging height of the air pump relative to the suspension by adjusting the clamping length of the end through the second flat hole; the air pump includes an air pump housing and an air pump body arranged therein, and grooves matching the second shock-absorbing belts are symmetrically arranged on the left and right sides of the air pump housing, and the two ends of the second shock-absorbing belt pass upward through the grooves to be clamped with the second flat holes. The air pump is hung on the suspension through the second shock-absorbing belt, the second shock-absorbing belt bypasses the bottom of the air pump to support the air pump, and the two ends of the second shock-absorbing belt pass upward through the second flat holes on both sides of the suspension to be clamped with the suspension. In use, the height of the air pump relative to the suspension can be adjusted by changing the length of the end of the second shock-absorbing belt passing through the second flat hole. The second shock-absorbing belt is made of elastic material and can be deformed and shaken to absorb vibration to achieve a shock-absorbing effect. By adjusting the clamping length of the second flat hole of the second shock-absorbing belt box, the size of the gap formed by the second shock-absorbing belt around the air pump can be changed to adapt to air pumps of different cross-sectional sizes. The air pump passes through the second shock-absorbing belt through the grooves set on both sides of the outermost air pump shell. After the second shock-absorbing belt is installed in place, it clamps the air pump tightly against the air pump shell, so that the air pump is stably hung under the suspension.

[0011] The suspension is provided with a secondary air box, the air inlet of which is connected to the output air path of the solenoid valve. The output air path of the secondary air box can be used as a branch to supply air to the airbags in the area of ​​the inflatable bed where the quietness requirement is high, further reducing the noise generated by the high-speed airflow output by the solenoid valve and enhancing the quietness effect.

[0012] The shell is composed of an inner shell with a cavity and an outer shell that is sleeved on the outer shell of the inner shell. The inner shell and the outer shell are fixed by screws. The upper part of the inner shell extends out of the outer shell and a joint seat is set on the side. The cavity is formed into an opening at the upper end of the inner shell and is closed by an upper cover. The air pump, main air box, solenoid valve and control circuit board are arranged in the cavity of the inner shell. The air pump, main air box and solenoid valve are integrally suspended in the inner shell cavity of the inner layer. The inner and outer double-layer shell structure can further improve the shock absorption and noise reduction effect, making the control box quieter when working; the integral suspension can be installed from the opening of the inner shell, and the upper cover can be closed after it is installed in place. The upper cover can be fixed by screws or glue or other existing technologies. In order to facilitate the installation of a large air pump, the lower part of the inner shell can also open a hole in the side wall to form a window for easy operation. The inner shell part where the window is located is wrapped in the outer shell after the inner shell and the outer shell are sleeved.

[0013] The second purpose of the utility model is to provide an inflatable bed, including a bed frame, a mattress with an air bag built in, and a control box for supplying air to the air bag, the control box being connected to the air bag through an air pipe, and characterized in that the control box is a shock-absorbing control box with a suspension system as described in one of the above, and the control box is externally placed on the mattress and arranged at the bottom of the bed frame. Since the control box adopts an integrated suspension structure to install the air pump, main air box and other components that generate working vibration, the vibration transmitted to the outside by the control box when working and the noise caused by it are significantly reduced, and the inflatable bed has a good mute effect when working, so as to further improve the sleep quality.

[0014] The utility model uses an integrated suspension structure to install components such as an air pump and an air box that generate vibrations during operation inside a control box. The integrated suspension has no contact with the shell, and the vibrations generated during operation are absorbed by the suspension system, so that the vibrations transmitted to the outside by the control box and the noise brought about are weakened and reduced. The control box has a good mute effect when working, which helps to further improve the sleep quality. Furthermore, the inflatable bed using the control box is silent and has high sleep quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 : Exploded view of the structure of Example 1.

[0016] Figure 2 : Schematic diagram of the assembly of the suspension, air pump, main air box and auxiliary air box in Example 1.

[0017] Figure 3 : Schematic diagram of the assembly of the solenoid valve, main air box and fixing frame in Example 1.

[0018] Figure 4 : Figure 3 Schematic diagram after assembly.

[0019] Figure 5 : Figure 4 sectional view of .

[0020] Figure 6 : Figure 4 Cross-sectional view of the installation of the middle main air box.

[0021] Figure 7 : Figure 4 Cross-sectional view of solenoid valve installation.

[0022] Figure 8 : Figure 3 Schematic diagram of the middle fixing bracket.

[0023] Fig. 9 : Schematic diagram of Example 2.

[0024] In the figure: 1. air pump, 2. main air box, 2-1. lug, 3. solenoid valve, 4. control circuit board, 5. suspension, 5-1. wing plate, 5-2. mounting groove, 6. cantilever, 7. fixing frame, 7-1. bending section, 8. shock-absorbing foot, 9. first shock-absorbing belt, 10. first flat hole, 11. second shock-absorbing belt, 12. second flat hole, 13. groove, 14. auxiliary air box, 15. inner shell, 16. outer shell, 17. joint seat, 18. upper cover, 19. empty window, 20. ridge. 21. control box, 22. bed frame, 23. mattress, 24. air pipe, 25. screw. DETAILED DESCRIPTION

[0025] The utility model is further described below in conjunction with the accompanying drawings and specific implementation methods.

[0026] Example 1 Figures 1 to 8 As shown, a shock absorbing control box with a suspension system comprises a hollow shell and an air pump 1, a main air box 2, a solenoid valve 3 and a control circuit board 4 arranged therein, the air pump 1 is connected to the main air box 2 and the solenoid valve 3 through an air path, the control circuit board 4 can control the air pump 1 and the solenoid valve 3 to work, the shell consists of an inner shell 15 with a cavity and an outer shell 16 which is sleeved on the outer part of the inner shell 15, the inner shell 15 and the outer shell 16 are fixed by screws, the upper part of the inner shell 15 extends out of the outer shell 16 and a joint seat 17 is arranged on the side, the cavity is formed with an opening at the upper end of the inner shell 15 and is closed by an upper cover 18, the air pump 1, the main air box 2, the solenoid valve 3 and the control circuit board 4 are arranged in the cavity of the inner shell 15; a suspension system with a suspension 5 is arranged in the cavity of the inner shell 15, the air pump 1, the main air box 2, the solenoid valve 3 and the control circuit board 4 are all arranged on the suspension 5, and the suspension system can suspend the suspension 5 in the cavity for shock absorption.

[0027] Since the air pump, main air box and solenoid valve that generate vibrations during operation are all arranged on the suspension to form an integrated suspension, and are suspended in the cavity of the inner shell through the suspension system, the integrated suspension has no contact with the shell and will not directly transmit vibrations to the inner shell and the outer shell. Moreover, the vibrations generated by the operation of the air pump and the like can be absorbed by the suspension system to achieve a shock-absorbing effect. The vibrations transmitted to the outside by the control box and the noise brought about are also weakened and reduced. The control box has a good silent effect during operation, which improves the sleep quality.

[0028] Further, such as Figure 2 and Figure 3 As shown, the suspension system includes a suspension frame 5, a cantilever 6 and a fixing frame 7, and the solenoid valve 3 and the main air box 2 are fixedly connected to the fixing frame 7, wherein the solenoid valve 3 is as shown in FIG. Figure 7As shown, the fixing frame 7 is locked with screws, the main air box 2 is mounted on the end of the fixing frame 7, the end of the fixing frame 7 is provided with an outwardly extending folded edge 7-1 connected to the main air box 2, the top of the main air box 2 is provided with a lug 2-1 matching the end of the folded edge 7-1, the lug 2-1 can be attached to the end of the folded edge 7-1 and fixed by screws, and the lug 2-1 and the ends of the folded edge 7-1 are provided with mounting holes matching the screws; the fixing frame 7 is hung on the suspension 5, the air pump 1 and the control circuit board 4 are arranged on the suspension 5, the suspension 5 is mounted on the cantilever 6 through a plurality of shock-absorbing feet 8, and the cantilever 6 is fixedly connected to the shell. The air pump and the control circuit board, the solenoid valve and the main air box are mounted on the suspension in different ways, and the suspension is mounted on the cantilever fixed to the inner shell through a shock-absorbing foot with a shock-absorbing function, and the shock-absorbing foot is a prior art.

[0029] Further, such as Figure 2 There are two cantilevers 6 shown in the figure, which are parallel and of equal height. The two cantilevers 6 are arranged below the two sides of the suspension 5. Each cantilever 6 is fixed to the shell by screws installed at both ends. A wing plate 5-1 integral with the suspension is extended from each side of the suspension 5 to match the two cantilevers 6. Each wing plate 5-1 is connected to the corresponding cantilever 6 through three shock-absorbing feet 8. The three shock-absorbing feet are arranged in a row to connect the cantilever and wing plate on the same side. The suspension is stably supported on the cantilever by matching the two wing plates with the two cantilevers. At the same time, in addition to the two ends of the cantilever being fixed by screws and the shell, the rest of the cantilever is also suspended in the inner cavity of the shell to improve the shock-absorbing effect by using the elasticity of the cantilever itself. The cantilever can be preferably made of spring steel to make full use of the elasticity of the material to enhance the shock-absorbing effect.

[0030] In order to make the cantilever and wing plate connection structure more compact, the bottom surface of the wing plate 5-1 is also provided with a mounting groove 5-2 for accommodating the cantilever 6. The cantilever 6 is inserted into the mounting groove 5-2 and connected to the wing plate 5-1 through the shock-absorbing foot 8. The two ends of the cantilever 6 extend from the openings at both ends of the mounting groove 5-2 and are fixed to the housing. The cantilever is inserted into the mounting groove, which can effectively reduce the vertical height of the connection between the cantilever and the wing plate and save space.

[0031] Further Figure 4 and Figure 5As shown, the fixing frame 7 is hung on the suspension frame 5 through the first shock-absorbing belt 9. The upper and lower ends of the first shock-absorbing belt 9 are respectively clamped and positioned with the suspension frame 5 and the fixing frame 7. The suspension frame 5 and the fixing frame 7 are both provided with a first flat hole 10 that matches the first shock-absorbing belt 9. The first shock-absorbing belt 9 can change the hanging height of the fixing frame 7 relative to the suspension frame 5 by adjusting the clamping length of the end portion passing through the first flat hole 10. In this embodiment, the first shock-absorbing material is preferably rubber, and the two ends of the shock-absorbing belt are provided with a plurality of parallel barbed convex ridges 20. The convex ridges 20 at different positions pass through the first flat hole and hook after 10 to achieve hanging. As long as the length of the end portion passing through the first flat hole is adjusted and hooked with the corresponding convex ridge, the hanging height of the fixing frame 7 relative to the suspension 5 can be adjusted to change the shock-absorbing effect. The closer the fixing frame is hung to the suspension, the shorter the working section of the first shock-absorbing belt is, and the shock-absorbing effect becomes weaker. On the contrary, the farther the fixing frame is hung from the suspension, the longer the working section of the first shock-absorbing belt is, and the shock-absorbing effect becomes stronger.

[0032] like Figure 2 As shown, the air pump 1 is hung on the suspension 5 through two sets of parallel second shock-absorbing belts 11, and the second shock-absorbing belts 11 bypass the bottom of the air pump 1. The two ends of the second shock-absorbing belts 11 pass upward through the second flat holes 12 opened on both sides of the suspension 5 to be clamped and positioned with the suspension 5. The ends of the second shock-absorbing belts 11 are also provided with ridges similar to the first shock-absorbing belts, and the end can be adjusted to pass through the second flat hole 12 and the clamping length can be adjusted by hooking with the ridges, thereby changing the hanging height of the air pump 1 relative to the suspension 5; the air pump 1 includes an air pump housing and an air pump body arranged therein, and the left and right sides of the air pump housing are symmetrically provided with grooves 13 matching the second shock-absorbing belts 11 to position the second shock-absorbing belt, and the two ends of the second shock-absorbing belt 11 pass through the grooves 13 and clamped upward with the second flat holes 12.

[0033] Furthermore, the suspension 5 is also provided with a secondary air box 14, and the air inlet of the secondary air box 14 is connected to the output air path of the solenoid valve 3. The secondary air box is connected to the air path to further reduce the noise of the high-speed airflow, so that the output air path is used as a branch to supply air to the airbags in the area of ​​the inflatable bed with higher requirements for quietness, thereby improving the quietness effect.

[0034] Example 2 Fig. 9 As shown, an inflatable bed includes a bed frame 22, a mattress 23 with an air bag built in, and a control box 21 for supplying air to the air bag. The control box 21 is connected to the air bag through an air pipe 24, wherein the control box 21 is a shock-absorbing control box with a suspension system as described in Example 1, and the control box 21 is arranged at the bottom of the bed frame 22 and is placed outside the mattress 23. Since the air pump, the main air box and other components that vibrate during operation are installed in the control box with an integrated suspension structure, the vibration and noise emitted by the control box when it is working are significantly reduced, and the inflatable bed has a good mute effect when working, which helps to improve the quality of sleep.

Claims

1. A shock absorbing control box with a suspension system, comprising a hollow shell and an air pump (1), a main air box (2), a solenoid valve (3) and a control circuit board (4) arranged therein, the air pump (1) and the main air box (2) and the solenoid valve (3) are connected through an air path, and the control circuit board (4) can control the operation of the air pump (1) and the solenoid valve (3), wherein: A suspension system with a suspension (5) is provided in the cavity of the shell, and the air pump (1), the main air box (2), the solenoid valve (3) and the control circuit board (4) are all arranged on the suspension (5). The suspension system can suspend the suspension (5) in the inner cavity of the shell for shock absorption.

2. The shock absorbing control box with suspension system according to claim 1, characterized in that The suspension system comprises a suspension (5), a cantilever (6) and a fixing frame (7); the solenoid valve (3) and the main air box (2) are fixedly connected to the fixing frame (7); the fixing frame (7) and the suspension (5) are connected; the air pump (1) and the control circuit board (4) are arranged on the suspension (5); the suspension (5) is mounted on the cantilever (6) via a plurality of shock-absorbing feet (8); and the cantilever (6) and the housing are fixedly connected.

3. The shock absorbing control box with suspension system according to claim 2, characterized in that The end of the fixing frame (7) is provided with an outwardly extending folded edge (7-1) connected to the main gas box (2), and the top of the main gas box (2) is provided with a lug (2-1) matching the end of the folded edge (7-1), and the lug (2-1) can be attached to the end of the folded edge (7-1) and fixed by screws.

4. The shock absorbing control box with suspension system according to claim 2, characterized in that There are two cantilevers (6) which are parallel and of equal height. The two cantilevers (6) are arranged below the two sides of the suspension (5). The cantilevers (6) are fixed to the shell by screws installed at both ends. An integral wing plate (5-1) is extended from both sides of the suspension (5) to match the two cantilevers (6). The wing plate (5-1) is connected to the corresponding cantilever (6) through a shock-absorbing foot (8).

5. The shock absorbing control box with suspension system according to claim 4, characterized in that The bottom surface of the wing plate (5-1) is provided with a mounting groove (5-2) capable of accommodating the cantilever (6); the cantilever (6) is connected to the wing plate (5-1) via a shock-absorbing foot (8) in the mounting groove (5-2); and two ends of the cantilever (6) extend out from openings at two ends of the mounting groove (5-2).

6. The shock absorbing control box with suspension system according to claim 2, characterized in that The fixing frame (7) is hung on the suspension frame (5) through a first shock-absorbing belt (9); the upper and lower ends of the first shock-absorbing belt (9) are respectively clamped and positioned with the suspension frame (5) and the fixing frame (7); the suspension frame (5) and the fixing frame (7) are both provided with a first flat hole (10) matching the first shock-absorbing belt (9); the first shock-absorbing belt (9) can change the hanging height of the fixing frame (7) relative to the suspension frame (5) by adjusting the clamping length of the end portion thereof passing through the first flat hole (10).

7. The shock absorbing control box with suspension system according to claim 2, characterized in that The air pump (1) is hung on the suspension (5) through a plurality of parallel second shock-absorbing belts (11), the second shock-absorbing belts (11) bypassing the bottom of the air pump (1), and the two ends of the second shock-absorbing belts (11) pass upward through the second flat holes (12) opened on both sides of the suspension (5) to be clamped and positioned with the suspension (5), and the second shock-absorbing belt (11) can change the hanging height of the air pump (1) relative to the suspension (5) by adjusting the clamping length of the end portion passing through the second flat hole (12); the air pump (1) comprises an air pump housing and an air pump body arranged therein, the left and right sides of the air pump housing are symmetrically provided with grooves (13) matching the second shock-absorbing belts (11), and the two ends of the second shock-absorbing belt (11) pass through the grooves (13) to be clamped upward with the second flat holes (12).

8. The shock absorbing control box with suspension system according to claim 1, characterized in that The suspension (5) is provided with an auxiliary air box (14), and the air inlet of the auxiliary air box (14) is connected to the output air path of the electromagnetic valve (3).

9. The shock absorbing control box with suspension system according to claim 1, characterized in that The housing is composed of an inner housing (15) with a cavity and an outer housing (16) which is sleeved on the outer portion of the inner housing (15). The inner housing (15) and the outer housing (16) are fixed by screws. The upper portion of the inner housing (15) extends out of the outer housing (16) and a connector seat (17) is arranged on the side. The cavity is opened at the upper end of the inner housing (15) and is closed by an upper cover (18). The air pump (1), the main air box (2), the solenoid valve (3) and the control circuit board (4) are arranged in the cavity of the inner housing (15).

10. An inflatable bed, comprising a bed frame (22), a mattress (23) with an air bag built in, and a control box (21) for supplying air to the air bag, wherein the control box (21) is connected to the air bag via an air supply pipe (24), wherein: The control box (21) is a shock-absorbing control box with a suspension system as described in any one of claims 1 to 9. The control box (21) is externally disposed on the mattress (23) and is arranged at the bottom of the bed frame (22).

Images