CN108433431B

CN108433431B - Liftable bed

Info

Publication number: CN108433431B
Application number: CN201810251928.5A
Authority: CN
Inventors: 刘瑷欣
Original assignee: Individual
Current assignee: Individual
Priority date: 2018-03-26
Filing date: 2018-03-26
Publication date: 2020-07-14
Anticipated expiration: 2038-03-26
Also published as: CN108433431A; WO2019184290A1

Abstract

The invention provides a liftable bed, which comprises a bed box, a bed board and a lifting unit, wherein the bed box is provided with a bed plate; the bed board can be horizontally lifted or dropped through the lifting unit and is arranged at the opening of the bed box. The invention has simple structure, is convenient for people to take and place articles from any angle of the bed box, can not lead the articles on the bed to be piled up when the bed board is lifted or dropped, and saves the sorting time afterwards. More important, because the special setting of coil spring's spring leaf, at the bed board in-process that falls, coil spring's holding power increases gradually, forms a natural buffer resistance, reduces the speed of falling of bed board, avoids the bed board to strike the bed case with too fast speed and leads to bed body surface damage, avoids the bed board to fall and injures personnel by a crashing object.

Description

Liftable bed

Technical Field

The invention relates to the technical field of furniture, in particular to a liftable bed with a bed plate which is lifted or dropped to facilitate taking and placing articles from a bed box.

Background

At present, a bed body used by many families has a storage function, namely the bed body generally comprises a bed box for containing sundries, and a bed board of the bed body is erected at the upper opening edge of the bed box.

In order to conveniently lift the bed board and further take articles from the bed box, a pneumatic spring is usually arranged to assist the manpower to lift the tail part of the bed board, so that the bed board is arranged at an inclination angle of about 30 degrees to 45 degrees, and people can take articles or place articles from the lifted end.

However, the disadvantage of this method is that the head of the bed board can not be lifted, which makes it difficult for people to take and place the articles near the head of the bed in the bed box; meanwhile, when the bed board rotates, the head of the bed board can be abraded with the head board to damage the bed body, most manufacturers divide the bed board into a non-reversible board body close to the head of the bed and a reversible board body close to the tail of the bed, and therefore a large part of accommodating space of the bed box is sacrificed, and space waste is caused.

Disclosure of Invention

The invention aims to provide a liftable bed to solve one or more technical problems in the prior art.

In order to solve the technical problem, the invention provides a liftable bed, which comprises: the bed comprises a bed box, a bed board and a lifting unit;

an accommodating space is arranged in the bed box, and an opening is arranged above the bed box;

two opposite sides in the bed box are respectively provided with at least two lifting units which are arranged side by side at intervals;

the bed board can be horizontally lifted or dropped through the lifting unit and is arranged at the opening of the bed box;

the lifting unit comprises a cylindrical body, a lifting rod and a winding spring;

the cylindrical body is vertically arranged and attached to the inner side of the side plate of the bed box; a sliding groove is arranged in the cylindrical body along the height direction, and an outlet communicated with the inside and the outside of the sliding groove is arranged above the cylindrical body;

the lower end of the lifting rod is arranged in the chute in a lifting manner, and the upper end of the lifting rod extends out of the outlet and is connected with the bed board;

the winding spring is arranged in the sliding groove and is formed by winding a sheet spring piece, two ends of the winding spring comprise a first winding drum part and a second winding drum part which are arranged up and down, the first winding drum part is connected with the cylindrical body, the second winding drum part is rotatably arranged on the lifting rod, and the spring force of the winding spring tends to force the lifting rod to move upwards so as to provide supporting force for supporting the bed plate;

the spring plate comprises an execution section which provides effective supporting force in the maximum stretching range of the winding spring; the executing section is in a trapezoid shape with a wide upper part and a narrow lower part after being completely unfolded, when the bed plate falls, the second winding drum part is gradually wound, the width of a part of the spring piece executing section, which provides supporting force, is gradually widened, and then the supporting force provided by the winding spring is gradually increased to slow down the falling speed of the bed plate;

the first reel part is rotatably arranged on the tubular body through a rotating shaft; the first reel part is sleeved on the rotating shaft, and the first reel part is relatively and fixedly connected with the rotating shaft in the circumferential direction of the rotating shaft; the rotating shaft is rotatably arranged on the mounting hole of the cylindrical body, and a locking mechanism for locking the rotating shaft is arranged between the rotating shaft and the cylindrical body;

the first winding drum part is wound or unwound by rotating the rotating shaft, the second winding drum part is synchronously wound or unwound under the action of the self spring force, the width of a part providing the supporting force on the spring piece execution section is relatively reduced or increased, and then the supporting force provided by the winding spring is reduced or increased along with the width of the part, so that the supporting requirement for bed boards and mattresses with different weights is met.

During daily use, the bed board is erected at the opening edge of the bed box opening, when the bed box needs to be opened, the bed board can be lifted by force, the bed board is horizontally lifted to a set height, a channel for taking and placing objects is formed between the bed board and the bed box opening, the channel has no dead angle, the development degree is uniform, and people can take and place objects conveniently from any angle. When the bed board is lifted or dropped, the articles on the bed can not be accumulated together, and the subsequent arrangement time is saved.

More important, because the special setting of coil spring's spring leaf, at the bed board in-process that falls, coil spring's holding power increases gradually, forms a natural buffer resistance, reduces the speed of falling of bed board, avoids the bed board to strike the bed case with too fast speed and leads to bed body surface damage, avoids the bed board to fall and injures personnel by a crashing object.

In addition, the supporting force of the winding spring can be adjusted by adjusting the working position of the spring piece on the winding spring, so that the supporting requirements of different bed boards and mattress weights are met.

When the extension length of the winding spring reaches the maximum limit, the part of the spring piece between the first winding drum part and the second winding drum part is an execution section, the unwinding or winding supporting force of the winding spring is changed regularly in the execution section range, and the winding spring cannot be damaged.

At present, the thickness and the material of a spring leaf of a winding spring are uniform, and when the execution section is in a trapezoid shape with a wide top and a narrow bottom after being completely unfolded, the spring force (supporting force) provided by the winding spring is linearly changed, or gradually increased or gradually decreased in the unfolding or rolling process of the winding spring.

Further, the maximum spring force (supporting force) provided by the winding spring is equal to the total weight of the bed board and the mattress, so that labor is saved for lifting the bed board and opening the bed box.

Furthermore, the winding spring is formed by winding a plurality of spring pieces which are arranged in a mutually clinging manner.

Furthermore, one end of the rotating shaft is provided with a hand wheel or a crank used for rotating the rotating shaft.

Furthermore, the locking mechanism is an elastic hoop arranged on the cylindrical body, the elastic hoop is sleeved on the rotating shaft, and the rotating shaft is tightly held by the elastic force of the elastic hoop so as to generate enough friction torque to prevent the rotating shaft from rotating under the action of the tension of the second winding cylindrical part; the rotating shaft is rotated against a frictional torque of the elastic band by an external force to wind or unwind the first bobbin section.

Of course, the locking mechanism is in many forms, such as a pin body, the pin body is slidably disposed on the cylindrical body along the radial direction of the rotating shaft, a compression spring is disposed between the pin body and the cylindrical body, and the pin body tends to be inserted into a clamping groove on the rotating shaft under the action of the compression spring. When the pin body is inserted into the clamping groove, the rotating shaft can be locked. Or the locking mechanism is a fastening piece such as a compression nut sleeved at one end of the rotating shaft, the rotating shaft can be locked by screwing the nut, the nut is loosened, and the rotating shaft can rotate freely.

Furthermore, two opposite sides in the bed box are respectively provided with two lifting units; the four lifting units are arranged in a matrix form.

Furthermore, an electric telescopic rod is arranged in the bed box, and the electric telescopic rod is vertically arranged to lift or fall the bed board.

Furthermore, a control switch for the telescopic work of the electric telescopic rod is arranged on the outer side of the bed box.

Furthermore, the bed further comprises a supporting rod, one end of the supporting rod is hinged to the bed box, after the bed board is lifted, two ends of the supporting rod respectively abut against the bed board and the bed box and are used for supporting the bed board and preventing the bed board from falling.

The invention has simple structure, is convenient for people to take and place articles from any angle of the bed box, can not lead the articles on the bed to be piled up when the bed board is lifted or dropped, and saves the sorting time afterwards. More important, because the special setting of coil spring's spring leaf, at the bed board in-process that falls, coil spring's holding power increases gradually, forms a natural buffer resistance, reduces the speed of falling of bed board, avoids the bed board to strike the bed case with too fast speed and leads to bed body surface damage, avoids the bed board to fall and injures personnel by a crashing object.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the description in the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.

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

FIG. 2 is a schematic structural diagram of a lifting unit according to an embodiment of the present invention;

FIG. 3 is a schematic diagram of a coil spring according to an embodiment of the present invention;

fig. 4 is a schematic structural view of the fully unwound wrap spring in the embodiment of the present invention.

Detailed Description

The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The present invention will be further explained with reference to specific embodiments.

Example 1

As shown in fig. 1, the liftable bed provided by the embodiment includes: a bed box 10, a bed board 30 and a lifting unit 20.

An accommodating space is arranged in the bed box 10, and an opening is arranged above the accommodating space; two opposite sides in the bed box 10 are respectively provided with at least two lifting units 20 which are arranged side by side at intervals; the bed plate 30 is disposed at an opening of the bed box 10 so as to be horizontally raised or lowered by the lifting unit 20.

As shown in fig. 2, the lifting unit 20 includes a cylindrical body 21, a lifting rod 22, and a winding spring 40.

The cylindrical body 21 is vertically arranged and is attached to the inner side of the side plate of the bed box 10; a sliding groove is arranged in the cylindrical body 21 along the height direction, and an outlet communicated with the inside and the outside of the sliding groove is arranged above the cylindrical body 21; the lower end of the lifting rod 22 is arranged in the chute in a lifting manner, and the upper end of the lifting rod 22 extends out of the outlet to be connected with the bed board 30.

The coil spring 40 is disposed in the slide groove, and the coil spring 40 is formed by winding a sheet-shaped spring piece. As shown in fig. 3, the two ends of the coil spring include a first coil portion 41 and a second coil portion 42 which are vertically disposed, the first coil portion 41 is connected to the tubular body 21, the second coil portion 42 is rotatably disposed on the lifting rod 22, and the spring force of the coil spring 40 tends to force the lifting rod 22 to move upward, thereby providing a supporting force for supporting the bed plate 30.

As shown in fig. 4, the spring plate includes an actuating section 43 providing an effective supporting force in the maximum extension range of the wrap spring 40; the execution section 43 is a trapezoid with a wide upper part and a narrow lower part after being completely unfolded, when the bed plate 30 falls, the second rolling barrel part 42 is gradually rolled up, the width of the part of the spring piece execution section 43 providing the supporting force is gradually widened, and further the supporting force provided by the rolling spring 40 is gradually increased to slow down the falling speed of the bed plate 30.

More preferably, the sliding groove is internally provided with a sliding rail, the lifting rod is arranged on the cylindrical body through the sliding rail in a lifting manner, the sliding plate generally comprises a fixed rail, a movable rail, a plurality of balls and a ball retainer, the lifting rod is fixedly connected with the movable rail, and the fixed rail is fixedly connected with the cylindrical body. And the second drum portion 42 is preferably rotatably provided at the lower end of the lift lever through a shaft body or a spring seat.

When the extension length of the wrap spring 40 reaches the maximum limit, the part of the spring piece between the first and

second drum parts

41 and 42 is the execution section 43, the unwinding or winding supporting force of the wrap spring 40 is changed regularly within the execution section 43, and the wrap spring 40 is not damaged. At present, the thickness and the material of the spring leaf of the winding spring 40 are uniform, and when the execution section 43 is a trapezoid with a wide top and a narrow bottom after being completely unfolded, the spring force (supporting force) provided by the winding spring 40 is linearly changed, or gradually increased or gradually decreased in the unfolding or rolling process.

In practice, the maximum spring force (supporting force) provided by the coil spring 40 is approximately equal to the total weight of the bed board 30 and the mattress 31, so as to save the force for lifting the bed board 30 to open the bed box 10.

The coil spring 40 is formed by coiling a plurality of spring pieces which are closely attached to each other.

When the bed box 10 needs to be opened, the bed plate 30 can be lifted by force, the bed plate 30 is horizontally lifted to a set height, a channel for taking and placing objects is formed between the bed plate 30 and the opening of the bed box 10, the channel has no dead angle, the development degree is uniform, and people can take and place the objects conveniently from any angle. When the bed board 30 is lifted or dropped, the articles on the bed are not accumulated together, and the subsequent arrangement time is saved.

More importantly, due to the special arrangement of the spring pieces of the winding springs 40, in the falling process of the bed board 30, the supporting force of the winding springs 40 is gradually increased to form a natural buffer resistance, the falling speed of the bed board 30 is reduced, the bed board 30 is prevented from impacting the bed box 10 at an excessively high speed to cause surface damage of the bed body, and meanwhile, a user is prevented from being injured by clamping or smashing when the bed board falls.

Especially, when a child is present, the child likes to drill into the bed box for playing, but the bed plate of the existing bed body is heavy and arranged in a pitching mode, and when the child falls down, the clamping force of the bed plate and the bed box can easily cause fracture and even life danger of the child.

And the bed board is supported by coil spring in this application, and is really fallen and comparatively gentle when closed, and inertia is very little, even child is in the bed incasement, can not lead to child to be injured yet, only needs child to push gently just can lift the bed board, then escapes from the bed incasement.

In this embodiment, two lifting units 20 are respectively disposed on two opposite sides of the bed box 10; the four lifting units 20 are arranged in a matrix. Of course, the number of the lifting units can also be set according to the actual supporting requirement, such as six or eight, etc.

In addition, an electric telescopic rod (not shown) is arranged in the bed box 10, and the electric telescopic rod is vertically arranged to lift or drop the bed board 30. The outer side of the bed box 10 is provided with a control switch for the telescopic work of the electric telescopic rod.

Or, realize manual support through setting up the bracing piece (not shown), bracing piece one end hinge is connected on the bed case 10, the back is risen to the bed board 30, and the both ends of bracing piece support respectively lean on the bed board 30 with on the bed case 10 for support live the bed board 30 prevents that the bed board 30 from dropping.

Example 2

The embodiment is a more optimized improvement made on the basis of embodiment 1, and the specific improvement is as follows:

the first bobbin part 41 is rotatably provided on the cylindrical body 21 by a rotating shaft (not shown); the first reel part 41 is sleeved on the rotating shaft, and the first reel part 41 is relatively fixedly connected with the rotating shaft in the circumferential direction of the rotating shaft; the rotating shaft is rotatably arranged on the mounting hole of the cylindrical body 21, and a locking mechanism (not shown) for locking the rotating shaft is arranged between the rotating shaft and the cylindrical body 21.

The first winding drum part 41 is wound or unwound by rotating the rotating shaft, the second winding drum part 42 is synchronously wound or unwound under the action of the self spring force, the width of the part of the spring piece execution section 43 providing the supporting force is relatively reduced or increased, and the supporting force provided by the winding spring 40 is reduced or increased accordingly, so that the supporting requirements of bed boards and mattresses with different weights are met.

One end of the rotating shaft can be provided with a hand wheel or a crank used for rotating the rotating shaft.

The locking mechanism is an elastic hoop arranged on the cylindrical body 21, the elastic hoop is sleeved on the rotating shaft, and the rotating shaft is tightly held by the elastic force of the elastic hoop so as to generate enough friction torque to prevent the rotating shaft from rotating under the action of the tensile force of the second drum part 42; the first bobbin part 41 can be wound up or unwound by rotating the rotation shaft against the frictional torque of the elastic band by an external force.

Of course, the locking mechanism may be in many forms, such as a pin body, the pin body is slidably disposed on the cylindrical body 21 along the radial direction of the rotating shaft, a compression spring is disposed between the pin body and the cylindrical body 21, and the pin body tends to be inserted into a slot on the rotating shaft under the action of the compression spring. When the pin body is inserted into the clamping groove, the rotating shaft can be locked. Or the locking mechanism is a fastening piece such as a compression nut sleeved at one end of the rotating shaft, the rotating shaft can be locked by screwing the nut, the nut is loosened, and the rotating shaft can rotate freely.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A liftable bed, comprising: the bed comprises a bed box, a bed board and a lifting unit;

the first winding drum part is wound or unwound by rotating the rotating shaft, the second winding drum part is synchronously wound or unwound under the action of the self spring force, the width of a part of the spring piece execution section, which provides the supporting force, is relatively reduced or increased, and then the supporting force provided by the winding spring is reduced or increased along with the width of the part of the spring piece execution section, so that the spring piece execution section is suitable for supporting requirements of bed boards and mattresses with different weights;

and a hand wheel or a crank used for rotating the rotating shaft is arranged at one end of the rotating shaft.

2. Liftable bed according to claim 1, wherein the maximum spring force provided by the coil spring is equal to the total weight of the bed plate and the mattress.

3. The liftable bed according to claim 1, wherein the coil spring is formed by coiling a plurality of spring pieces which are closely attached to each other.

4. A liftable bed according to claim 1, wherein two lifting units are respectively arranged on two opposite sides in the bed box; the four lifting units are arranged in a matrix form.

5. The liftable bed according to claim 1, wherein an electric telescopic rod is arranged in the bed box, and the electric telescopic rod is vertically arranged to raise or lower the bed board.

6. A liftable bed according to claim 5, wherein a control switch for the telescopic operation of the electric telescopic rod is arranged outside the bed box.

7. The liftable bed according to claim 1, further comprising a support rod, wherein one end of the support rod is hinged to the bed box, and after the bed board is lifted, two ends of the support rod respectively abut against the bed board and the bed box for supporting the bed board and preventing the bed board from falling.