Bed with adjustable lumbar support

Abstract

The present invention discloses a bed with an adjustable lumbar support, comprising a bed body and a lumbar support mechanism, the lumbar support mechanism comprising: a support member; at least one telescopic cylinder, the telescopic cylinder being equipped with a cylinder base fixedly connected to the bottom of the bed body, one end of the telescopic cylinder being rotatably connected to the cylinder base, and the other end being rotatably connected to and supporting the support member to support the human waist; a pair of movable support connecting rods, the movable support connecting rods being able to move upward and downward, the upper sides of the two movable support connecting rods respectively supporting and connecting the left and right sides of the support member; a pair of side bases respectively fixed to the left and right sides of the bottom of the bed body, the lower sides of the two movable support connecting rods respectively movably connected to the two side bases, thereby ensuring the comfort and adjustability of the lumbar support.

Description

Technical Field

[0001] The present invention relates to the technical field of beds, in particular to a bed with an adjustable lumbar support. Background Art

[0002] Currently, many electric beds on the market are equipped with lumbar support mechanisms. However, in the prior art, the motor of the lumbar support mechanism uses a method that has both thrust and pull forces. That is, without pull force, the ejection mechanism cannot automatically return by gravity. Summary of the Invention

[0003] The object of the present invention is to provide a bed with an adjustable lumbar support to ensure the comfort and adjustability of the lumbar support.

[0004] The object of the present invention is achieved as follows: A bed with adjustable lumbar support, comprising a bed body and a lumbar support mechanism, wherein the lumbar support mechanism comprises:

[0005] Support members;

[0006] At least one telescopic cylinder, wherein the telescopic cylinder is configured with a cylinder base fixedly connected to the bottom of the bed body, one end of the telescopic cylinder is rotatably connected to the cylinder base, and the other end of the telescopic cylinder is rotatably connected to and lifts up the support member to support the human waist;

[0007] A pair of movable supporting link groups, the movable supporting link groups can be telescopically moved up and down, and the upper sides of the two movable supporting link groups respectively support and connect the left and right sides of the support member;

[0008] A pair of side base seats are respectively fixed to the left and right sides of the bottom of the bed body, and the lower sides of the two movable support connecting rod groups are respectively movably connected to the two side base seats.

[0009] Furthermore, the bed body is provided with a waist-pushing opening that passes through from top to bottom, and the support member is provided as a support frame, the edge of the support frame is adapted to the contour of the waist-pushing opening, and the support frame is located in the waist-pushing opening when the waist is not supported.

[0010] Furthermore, the movable support link group includes:

[0011] A movable strut, the upper end of which is connected to the support member, and the lower end of which is configured as a rotation fulcrum for horizontal movement with the side base seat;

[0012] A swing rod, the upper end of which is rotatably connected to the movable support rod and obliquely supports the movable support rod, and the lower end of which is set as a rotating fulcrum and rotatably connected to the side base seat.

[0013] Furthermore, side connecting seats connected to the upper ends of the movable struts are fixed on both left and right sides of the support member.

[0014] Furthermore, the side connecting seat is provided with a plurality of connecting holes, and the upper end of the movable strut is provided with two positioning holes, which are selectively aligned with two of the connecting holes and fixedly connected by a locking assembly to fix the side connecting seat and the upper end of the movable strut.

[0015] Furthermore, the lower end of the movable support rod is rotatably connected to a roller, and the roller rolls in a horizontal rolling groove provided in the side base seat.

[0016] Furthermore, the lumbar support mechanism further includes a linkage rod, and two ends of the linkage rod are respectively fixedly connected to two rocker arms.

[0017] Furthermore, the telescopic cylinder is configured as an electric cylinder, which is arranged obliquely under the support frame in the initial state, a support hinge seat is fixed to the bottom of the support frame, a cylinder body support is fixed to the cylinder barrel base seat, the telescopic rod of the electric cylinder rotates upward to connect to the support hinge seat, and the cylinder barrel of the electric cylinder rotates to connect to the cylinder body support.

[0018] Furthermore, the support member has a support point for directly supporting the waist, and the support point moves along a track that is vertical or approximately vertical to the support surface of the bed during the lifting process of the support member.

[0019] Furthermore, the bed body is divided into a first bed body unit and a second bed body unit along its length direction, and the first bed body unit and the second bed body unit are both provided with a movable plate and a driving device for driving the movable plate to flip, and the lumbar support mechanism is arranged on the first bed body unit, and the first bed body unit and the second bed body unit are rotatably connected by a folding hinge. The entire bed body is folded in half and nested with each other, so that the first bed body unit and the second bed body unit are relatively attached to form a rectangular box-shaped structure that accommodates the lumbar support mechanism and all driving devices.

[0020] The beneficial effects of the present invention are:

[0021] 1. It can ensure the comfort of lumbar support. When the electric cylinder supports the support member, the two movable support link groups can perform synchronous telescopic activities perpendicular to the support surface of the bed, thereby adjusting the height of the lumbar support according to the user's needs;

[0022] 2. The two movable support link groups can perform synchronous upward and downward extension and contraction activities, so that the left and right sides of the human waist are evenly stressed, preventing obvious height differences between the left and right sides and ensuring the comfort of the waist support. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a structural schematic diagram of the present invention.

[0024] Figure 2 It is a schematic diagram of the installation structure of the present invention.

[0025] Figure 3 This is the external structure diagram of the waist in the protruding state.

[0026] Figure 4 Schematic diagram of the lumbar support mechanism.

[0027] Figure 5 Schematic diagram of the movement position of the lumbar support mechanism.

[0028] Figure 6 is a side schematic diagram of a preferred embodiment.

[0029] Figure 7 is based on Figure 6 3D schematic diagram of .

[0030] Figure 8 It is a schematic diagram of the bed folding process.

[0031] Figure 9 This is a schematic diagram of the bed in the folded state.

[0032] Figure 10 It is a longitudinal cross-sectional view of the bed in the folded state. DETAILED DESCRIPTION

[0033] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0034] like Figure 1 、 2 As shown in Figure 5, a bed with adjustable lumbar support includes a bed body and a lumbar support mechanism 3, wherein the bed body is composed of a rectangular bed board 5 and a bed frame 6, and the bed board 5 is composed of a movable board and a fixed board. In this embodiment, the first bed unit 1 and the second bed unit 2 both have a movable board and a fixed board, and the bed board part of the first bed unit 1 is composed of a fixed hip board 5b and a movable back board 5a.

[0035] The lumbar support mechanism 3 includes:

[0036] Support member, in this embodiment, the support member is a nearly rectangular support frame 301, whose length direction is parallel to the width direction of the bed, so as to support the left and right sides of the human waist;

[0037] The telescopic cylinder is an electric cylinder 308 in this embodiment, but can be other types of telescopic cylinders. The telescopic cylinder is equipped with a cylinder base 311 that is detachably fixed to the bottom of the bed. One end of the cylinder base 311 is rotatably connected to the cylinder base 311, and the other end is rotatably connected to and supports the support frame 301 to support the human waist.

[0038] A pair of movable supporting link groups, which can be telescopically moved up and down, and the upper sides of the two movable supporting link groups respectively support and connect the left and right sides of the support frame 301;

[0039] A pair of side base seats 307 are detachably fixed to the left and right sides of the bottom of the bed, and the lower sides of the two movable supporting connecting rod groups are movably connected to the two side base seats 307. The two side base seats 307 can be respectively set as part of the side bars on both sides of the bed frame 6.

[0040] The waist support mechanism 3 can be completely disassembled and used as an independent unit.

[0041] The bed frame is provided with a through-and-through opening 5c ​​for the lumbar support. The edge of the support frame 301 conforms to the contour of the opening 5c, and when the lumbar support is not in use, the support frame 301 is positioned within the opening 5c. The support member can also be a plate, with the reinforcement frame fixedly connected to its lower surface. The left and right sides of the plate form part of the side edges of the bed frame, allowing the entire structure to be raised and lowered.

[0042] like Figure 5 As shown, when laid flat, the support frame 301 and the upper surface of the bed form a common plane; when the support frame 301 is raised, the upper surface of the support frame 301 forms an inclined plane that matches the bending direction of the mattress. The support frame 301 has a support point that directly supports the waist (that is, the highest point of the support frame 301), and this support point moves along a trajectory that is vertical or approximately vertical to the support surface of the bed during the lifting and lowering process of the support member.

[0043] Each movable support link group includes:

[0044] A movable support rod 303, the upper end of which is connected to the support member, and the lower end of which is configured as a rotation fulcrum for horizontally movably cooperating with the side base 307. In this embodiment, the rotation fulcrum may be a roller 304, which rolls in a horizontal rolling groove 307a provided in the side base 307. The opening of the rolling groove 307a faces inward to form a support, and the rotation fulcrum may be a slider that slides in the rolling groove 307a.

[0045] The swing rod 305 has an upper end that is rotatably connected to the movable support rod 303 and obliquely supports the movable support rod 303 , and a lower end that is set as a rotation fulcrum and is rotatably connected to the side base seat 307 .

[0046] Among them, the lumbar support mechanism 3 is also provided with a linkage rod 306, the two ends of the linkage rod 306 are respectively vertically fixedly connected to the two rocker arms 305, so that the two movable support link groups can perform synchronous telescopic movements, so that the left and right sides of the human waist are evenly stressed, preventing a significant height difference between the left and right sides, and ensuring the comfort of the lumbar support.

[0047] A side connection seat 302 connected to the upper end of the movable strut 303 is fixed below the left and right sides of the support frame 301, thereby increasing the structural strength of the entire support member and meeting the support requirements. To facilitate positioning and installation, the side connection seat 302 is provided with multiple connection holes 302a, and the upper end of the movable strut 303 is provided with two positioning holes 303a, which are selectively aligned with two of the connection holes 302a. Each pin is inserted into the positioning hole 303a and the corresponding connection hole 302a to securely connect the side connection seat 302 and the upper end of the movable strut 303. The relative angle between the side connection seat 302 and the movable strut 303 can be adjusted to make the support structure adjustable. Screws or other locking components can also be considered for fixed connection.

[0048] The above-mentioned electric cylinder 308 is arranged obliquely under the support frame 301 in the initial state, and is in the middle position of the two movable support link groups to lift up the support frame 301. A support hinge seat 309 is fixed in the center of the bottom of the support frame 301, and a cylinder body support 310 is fixed in the center of the cylinder base seat 311 to prevent uneven force on the left and right sides. The telescopic rod of the electric cylinder 308 rotates upward to connect the support hinge seat 309, that is, the supporting end is relatively upward, and the cylinder barrel of the electric cylinder 308 rotates to connect the cylinder body support 310. During use, the electric cylinder 308 never extends downward beyond the bottom surface of the bed. Therefore, after removing all the bed legs 4, the entire bed can be placed on the floor or tatami like a flat plate and used independently.

[0049] like Figure 6 、 7 The figure shows one of the preferred installation positions of the lumbar support mechanism 3 in this embodiment. The lumbar ejection opening 5c ​​is set on the hip plate 5b, and the lumbar support mechanism 3 is set at the position of the lumbar ejection opening 5c. In order to achieve good support effect and comfort and in accordance with ergonomic principles, during the entire movement process, the support point of the support frame 301 (a horizontally extending long frame edge) is approximately 500mm-750mm away from the head edge of the bed. In this embodiment, it can be 650mm-750mm, which is the position closest to the center of the human waist. The thickness of commonly used mattresses on the market is 250mm to 350mm. When the sponge mattress reaches a local compression rate of about 40%, it can provide strong support for the human waist. Calculated based on the thickest mattress of 350mm, the height of the support frame 301 needs to reach about 140mm. At the same time, on the basis of providing basic support for the waist, it is allowed to have a certain adjustment range until the mattress compression rate reaches 50%, which is a reasonable value. Therefore, the maximum height setting range of the support action point of the support frame 301 is between 130mm and 175mm, and in this embodiment, it is between 140mm and 175mm.

[0050] Taking into account the diversity of actual usage scenarios and customer needs, the position of the support point of the support frame 301 can have other setting schemes. Without departing from the core design principles of this application, any size setting is within the scope of protection.

[0051] like Figure 8-10 As shown, this embodiment proposes a preferred packaging and transportation solution, and does not exclude other possible methods. The bed body is divided into a first bed body unit 1 and a second bed body unit 2 along its length direction. The first bed body unit 1 and the second bed body unit 2 are both provided with a movable plate and a driving device for driving the movable plate to flip. The driving device is composed of a linear motor and a connecting rod mechanism (this is the existing technology). The lumbar support mechanism 3 is arranged on the first bed body unit 1. The first bed body unit 1 and the second bed body unit 2 are rotatably connected by a folding hinge 8 (the position of the folding hinge 8 is not limited here). After all the bed legs 4 are removed and the entire bed body is folded in half, the first bed body unit 1 and the second bed body unit 2 are relatively attached to form a rectangular box-like structure that accommodates the lumbar support mechanism 3 and all driving devices.

[0052] In this embodiment, the bed board 5 has a rectangular frame and forms a recessed groove with its opening facing away from the support surface. The rectangular bed frame 6 is disposed within the recessed groove. When the entire bed is folded in half, the two portions of the bed board 5 fit relatively close together, and the recessed grooves of the two portions overlap to form a packaging cavity. This cavity encloses the bed frame 6, lumbar support mechanism 3, and drive device, much like a cosmetic box. This allows the bed to be folded in half into a relatively regular rectangular box that can be stacked in a container, fully utilizing the limited packaging space within the container and facilitating transportation during daily use. Regardless of how the structural forms of the bed board 5 and bed frame 6 are modified, as long as they adhere to the design principles outlined in the previous technical section, they are within the scope of protection of this application.

[0053] like Figure 3 As shown, the lumbar support mechanism 3 is provided with a fabric cover that at least covers the support surface of the support member. The fabric cover is integrated with the fabric cover 7 of the bed or is independent of the fabric cover 7 of the bed. When laid flat, the fabric cover is flush with the fabric cover 7 of the bed.

[0054] The above is a preferred embodiment of the present invention. Ordinary technicians in this field can also make various changes or improvements on this basis, such as changes in relevant dimensions. Without departing from the overall concept of the present invention, these changes or improvements should fall within the scope of protection required by the present invention.

Claims

1. A bed with adjustable lumbar support, comprising a bed body and a lumbar support mechanism (3), characterized in that: The waist support mechanism (3) comprises: Support members; At least one telescopic cylinder, the telescopic cylinder being provided with a cylinder base (311) fixedly connected to the bottom of the bed, one end of the telescopic cylinder being rotatably connected to the cylinder base (311), and the other end of the telescopic cylinder being rotatably connected to and lifting up the support member to support the waist of the human body; A pair of movable supporting link groups, the movable supporting link groups can be telescopically moved up and down, and the upper sides of the two movable supporting link groups respectively support and connect the left and right sides of the support member; A pair of side base seats (307) are respectively fixed to the left and right sides of the bottom of the bed body, and the lower sides of the two movable support connecting rod groups are respectively movably connected to the two side base seats (307); The movable support link group includes: a movable support rod (303), the upper end of which is connected to the support member, and the lower end of which is set as a rotation fulcrum for horizontal movement with the side base seat (307); a swing rod (305), the upper end of which is rotatably connected to the movable support rod (303) and obliquely supports the movable support rod (303), and the lower end of which is set as a rotation fulcrum and rotatably connected to the side base seat (307); Side connecting seats (302) are fixed on both left and right sides of the support member, and the side connecting seats (302) are provided with a plurality of connecting holes (302a). The upper end of the movable support rod (303) is provided with two positioning holes (303a), and the two positioning holes (303a) are directly opposite to two of the connecting holes (302a). Each latch is inserted into the positioning hole (303a) and the corresponding connecting hole (302a) to fix the connection between the side connecting seat (302) and the upper end of the movable support rod (303), and adjust the relative angle between the side connecting seat (302) and the movable support rod (303).

2. A bed with adjustable lumbar support according to claim 1, characterized in that: The support member has a support point that directly supports the waist and moves along a trajectory vertical or approximately vertical to the bed support surface during the lifting process. The support point is between 500mm and 750mm away from the edge of the head of the bed, and is between 130mm and 175mm away from the bed support surface when it is raised to the highest position.

3. The bed with adjustable lumbar support according to claim 1, characterized in that: The bed body is provided with a waist ejection opening (5c) that passes through from top to bottom, the edge of the support member is adapted to the contour of the waist ejection opening (5c), and the support member is located in the waist ejection opening (5c) when the waist is not being pushed up.

4. The bed with adjustable lumbar support according to claim 1, characterized in that: The waist support mechanism (3) further comprises a linkage rod (306), and the two ends of the linkage rod (306) are respectively fixedly connected to the two rocking rods (305).

5. The bed with adjustable lumbar support according to claim 1, characterized in that: The lower end of the movable support rod (303) is rotatably connected to a roller (304), and the roller (304) rolls in a horizontal rolling groove (307a) provided in the side base seat (307).

6. The bed with adjustable lumbar support according to claim 1, characterized in that: The telescopic cylinder is configured as an electric cylinder (308), and in an initial state, the electric cylinder (308) is tiltedly arranged below the support member with its supporting end facing upward.

7. The bed with adjustable lumbar support according to claim 1, characterized in that: The waist support mechanism (3) is provided with a fabric cover that at least covers the support surface of the support member, and the fabric cover is integrated with the fabric cover (7) of the bed body or is independent of the fabric cover (7) of the bed body.

8. A bed with adjustable lumbar support according to any one of claims 1 to 7, characterized in that: The bed body is divided into a first bed body unit (1) and a second bed body unit (2) along its length direction. The first bed body unit (1) and the second bed body unit (2) are both provided with a movable plate and a driving device for driving the movable plate to flip. The lumbar support mechanism (3) is provided on the first bed body unit (1). The first bed body unit (1) and the second bed body unit (2) are rotatably connected via a folding hinge (8). The entire bed body is folded in half and nested with each other, so that the first bed body unit (1) and the second bed body unit (2) are relatively attached to form a rectangular box-shaped structure that accommodates the lumbar support mechanism (3) and all the driving devices.

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