CN110464161B

CN110464161B - Lifting bed

Info

Publication number: CN110464161B
Application number: CN201910879684.XA
Authority: CN
Inventors: 王家铮; 许焕敏; 胡哲龙
Original assignee: Changzhou Campus of Hohai University
Current assignee: Changzhou Campus of Hohai University
Priority date: 2019-09-18
Filing date: 2019-09-18
Publication date: 2021-10-08
Anticipated expiration: 2039-09-18
Also published as: CN110464161A

Abstract

The invention discloses a lifting bed, which comprises a bed frame assembly, a driving device, a screw rod assembly, a supporting base and a supporting top seat, wherein the screw rod assembly is connected with the driving device; the lead screw assembly comprises a ball screw and supporting rods, the supporting rods are fixedly connected with a supporting base and a supporting top seat, and at least one group of lead screw assemblies is arranged; the bed frame assembly is connected with the screw assembly through the bed connecting assembly, the bed connecting assembly comprises a connecting seat plate, a linear bearing and a trapezoidal nut assembly, the linear bearing and the trapezoidal nut assembly are fixedly connected with the connecting seat plate, the bed connecting assembly is connected with the bed frame assembly through the connecting seat plate, the supporting rod is connected with the bed connecting assembly through the linear bearing, and the ball screw is connected with the bed connecting assembly through the trapezoidal nut assembly. The invention provides a lifting bed with low cost, high safety performance and longer service life.

Description

Lifting bed

Technical Field

The invention relates to the field of home furnishing, in particular to a lifting bed.

Background

With the continuous improvement of the living standard of people, modern household life is focused on saving life and space, and with the increasing population of large cities, at present, in many first-line cities, the continuous increase of the room price leads to the fact that the effective living room area of most residents is not large, and many residents are living rooms or even zero living rooms, however, at least one bed is generally arranged in one bedroom, and the bed in one room generally occupies the largest space in the room, for example, the bed in a common household is 2 x 2.2m, the occupied area is very large, the bedroom with a plurality of small points even occupies half of the whole bedroom, if the bed can be lifted up, the bed is lifted to the top of a wall, so that the space under the bed is saved, and the multifunctional bed can be used for entertainment, office, study or the like. Nowadays, people all want a higher-quality living environment, and the intelligent lifting bed can not only effectively help people save more space, but also make people live more comfortable and healthy.

At present, the safety performance of the existing lifting bed is lower, and the service life is not high.

Disclosure of Invention

The invention provides a lifting bed with low cost, high safety performance and longer service life.

In order to achieve the purpose, the technical scheme adopted by the invention is as follows: a lifting bed comprises a bed frame assembly, a driving device, a screw rod assembly connected with the driving device, a supporting base and a supporting top seat; the lead screw assembly comprises a ball screw and supporting rods, the supporting rods are fixedly connected with a supporting base and a supporting top seat, and at least one group of lead screw assemblies is arranged; the bed frame assembly is connected with the screw rod assembly through a bed connecting assembly, and the bed connecting assembly comprises a connecting seat plate, a linear bearing fixedly connected with the connecting seat plate, a trapezoidal nut assembly, a welding piece, a rocker assembly and a shockproof pin positioned on the welding piece; the bed connecting assembly is fixedly connected with the bed frame assembly through the connecting seat plate, the support rod is connected with the bed connecting assembly through the linear bearing, and the ball screw is connected with the bed connecting assembly through the trapezoidal nut assembly; the welding piece is used for fixedly connecting the connecting seat plate and the linear bearing, the linear bearing is connected with the trapezoidal nut component through the rocker component, and the rocker component is rotatably connected with the trapezoidal nut component; the trapezoidal nut component comprises a trapezoidal nut bracket, an adjusting screw rod and a trapezoidal nut fixed in the trapezoidal nut bracket; the trapezoidal nut support is in shaft connection with the rocker assembly through an adjusting screw rod.

Preferably, the driving device comprises a motor, a first belt wheel and a second belt wheel which are connected with a rotating shaft of the motor, the second belt wheel is connected with the ball screw, and the first belt wheel is connected with the second belt wheel through a synchronous belt.

Preferably, the electric machine is an electromagnetic braking motor.

Preferably, the ball screw is fixedly connected with the supporting top seat and the supporting base through a bearing seat assembly.

Preferably, the bed frame assembly comprises a bed frame and a support frame assembly mounted below the bed frame.

Preferably, the support frame assembly comprises a support bracket connected with the bed frame and a plurality of support legs positioned below the support bracket, wherein the support legs are rotatably connected with the support bracket.

Preferably, the lifting bed further comprises a protection frame, the protection frame is fixedly connected with the supporting top seat and the supporting base, and the screw rod assembly is located in the protection frame.

Preferably, the lifting bed further comprises a body sensor located within the support top and bed frame assembly.

According to the invention, the supporting rod is arranged beside the ball screw, so that the bed connecting assembly is connected with the supporting rod, thereby greatly reducing the shearing stress applied to the ball screw, preventing the ball screw from being damaged easily, and prolonging the service life of the lifting device. Meanwhile, due to the supporting effect of the supporting rods, the safety of the lifting bed is enhanced, the diameter required by the ball screw is reduced, and the cost is reduced.

The bedstead below still is provided with the support frame subassembly, and when the bed body descends to appointed position, folding supporting leg is opened, supports the bed body part, has avoided the lift bed to bear alone, makes its security performance improve greatly. When the bed is lifted, the supporting legs can be folded, so that the space is saved.

In the invention, the human body sensor is arranged in the supporting top seat and the bed frame assembly so as to ensure the safety of the bed frame in the ascending and descending processes.

Drawings

FIG. 1 is a schematic view of the overall structure of a lifting bed according to an embodiment of the present invention;

FIG. 2 is a schematic view showing a structure of a driving apparatus according to an embodiment of the present invention;

FIG. 3 is a schematic view of a lead screw assembly according to an embodiment of the present invention;

FIG. 4 is an enlarged view taken at A in FIG. 3;

FIG. 5 is a perspective view of a bed connecting assembly in an embodiment of the present invention;

FIG. 6 is a side view of a bed connecting assembly in an embodiment of the present invention;

FIG. 7 is a schematic view of a frame assembly of the present invention;

FIG. 8 is a schematic view of a support frame assembly in a supporting position according to an embodiment of the present invention;

fig. 9 is a schematic view of a support frame assembly in a collapsed state according to an embodiment of the present invention.

Wherein: 1-drive means, 2-screw assembly, 3-bearing block assembly, 4-stationary assembly, 5-bed connector assembly, 6-bed frame assembly, 7-fender bracket, 8-support base, 9-support top base, 101-motor, 102-first pulley, 103-timing belt, 104-second pulley, 105-motor support, 106-rolling bearing, 107-screw mount, 201-ball screw, 202-key, 203-support bar, 204-ring washer, 301-screw mount, 302-base rolling bearing, 401-support bar stationary mount, 402-screw stationary mount, 403-stationary seat rolling bearing, 501-weld, 502-linear bearing, 503-oil nipple, 504-shockproof pin, 505-rocker bracket, 506-adjusting screw rod, 507-trapezoidal nut, 508-trapezoidal nut bracket, 509-connecting seat plate, 601-bed frame, 602-supporting leg, 603-supporting bracket, 604-folding connecting frame, 605-round bar and 606-connecting piece.

Detailed Description

For a better understanding of the nature of the invention, its description is further set forth below in connection with the specific embodiments and the drawings.

The invention discloses a lifting bed, which has a structure shown in figure 1 in a specific embodiment and comprises a bed frame assembly 6, a driving device 1, a screw rod assembly 2 connected with the driving device 1, a supporting base 8 and a supporting top seat 9. The bed frame assembly 6 is connected with the lead screw assembly 2 through the bed connecting assembly 5. The protective frame 7 is fixedly connected with the supporting top seat 9 and the supporting base seat 8, and the screw rod assembly 2 is positioned in the protective frame 7.

The driving device 1 is configured as shown in fig. 2, and includes a motor 101, a first pulley 102, a timing belt 103, a second pulley 104, a motor bracket 105, a rolling bearing 106, and a screw rod mounting base 107. The motor 101 is connected with the first belt pulley 102 through a rotating shaft of the motor, the first belt pulley 102 is connected with the second belt pulley 104 through a synchronous belt 103, meanwhile, the motor 101 is fixed on the lead screw mounting seat 107 through the motor support 105, and the lead screw mounting seat 107 is fixed on the protection frame 7. The screw mount 107 is provided with a rolling bearing 106. The motor 101 is preferably an electromagnetic braking motor, which can prevent reversion, so that the bed body is fixed at a specified position and is safer.

The screw assembly 2 is structurally shown in fig. 3 and comprises a ball screw 201, a key 202, a support rod 203 and an annular washer 204. The support rod 203 and the annular washer 204 are fixed on the support base 8 and the support top seat 9, and the ball screw 201 is fixedly connected with the support base 8 and the support top seat 9 through the bearing seat assembly 3. Bearing frame assembly 3 includes lead screw installation base 301 and base antifriction bearing 302, and base antifriction bearing 302 installs in lead screw installation base 301, and lead screw installation base 301 is fixed on supporting base 8 and supporting footstock 9. As shown in fig. 4, the ball screw 201 is connected to the bearing housing assembly 3 by a key 202. The ball screw 201 penetrates the rolling bearing 106 and is connected to the second pulley 104 at a key 202. The screw rod components 2 are arranged in two groups and are arranged in parallel. The screw rod component 2 is also provided with a fixing component 4.

The fixing assembly 4 is structurally shown in fig. 3 and comprises a support rod fixing mounting seat 401, a lead screw fixing mounting seat 402 and a fixing seat rolling bearing 403. The support rod fixing installation seat 401 and the lead screw fixing installation seat 402 are connected together, the fixing seat rolling bearing 403 is installed on the lead screw fixing installation seat 402, and the lead screw fixing installation seat 402 is fixed on the protection frame 7 through pins.

The bed connecting assembly 5 is structurally shown in fig. 5 and 6, and comprises a connecting seat plate 509, wherein the linear bearing 502 is fixedly connected with the connecting seat plate 509 through a welding piece 501. The linear bearing 502 is provided with a rocker assembly 505, and the rocker assembly 505 is rotatably connected with the trapezoidal nut assembly. The trapezoidal nut assembly comprises a trapezoidal nut bracket 508, an adjusting screw 506 and a trapezoidal nut 507 fixed in the trapezoidal nut bracket 508. The trapezoidal nut bracket 508 is journaled to the rocker assembly 505 by an adjustment screw 506. The adjustment of the screw 506 allows a certain deviation between the ball screw 201 and the support rod 203. The welding member 501 is further provided with a shock-proof pin 504, and the linear bearing 502 is provided with a nozzle 503. The bed connecting assembly 5 is fixed on the bed frame assembly 6 through a connecting seat plate 509, the support rod 203 is connected with the bed connecting assembly 5 through a linear bearing 502, and the ball screw 201 is connected with the bed connecting assembly 5 through a trapezoidal nut 507.

The bed frame assembly 6 is shown in fig. 7 and comprises a bed frame 601 and a support frame assembly installed under the bed frame 601, wherein the bed frame 601 is connected with the bed connecting assembly 5 through a connecting seat plate 509. The support frame assembly structure is shown in fig. 8 and includes support legs 602, support brackets 603, folding links 604, rods 605 and connectors 606. The supporting bracket 603 is connected with the bottom of the bedstead 601, a plurality of supporting legs 602 are arranged below the supporting bracket 603, and the supporting legs 602 are rotatably connected with the supporting bracket 603. The folding connecting frame 604 is connected between the supporting leg 602 and the supporting bracket 603, and a round bar 605 and a connecting piece 606 for extending and retracting the folding connecting frame 604 are arranged on the folding connecting frame 604.

Human body sensors are arranged on the left side and the right side of the supporting top seat 9 and the bottom of the left side and the right side of the bedstead 601. The human body sensor can detect whether the human body is near the bed body, when the human body is near the bed, the human body sensor senses the existence of people, and then the motor 101 of the controller control driving device 1 stops working until the human body leaves the bed body below, and the motor 101 works again.

The working principle of the invention is as follows: after the power is turned on, the driving device 1 starts to work, the motor 101 drives the first belt pulley 102, the first belt pulley 102 drives the second belt pulley 104 through the synchronous belt 103, and the second belt pulley 104 drives the ball screw 201 to rotate. The ball screw 201 converts the rotational motion of the screw into a linear motion of the bed connecting assembly 5 ascending or descending through a trapezoidal nut 507 in the bed connecting assembly 5. The bed connecting assembly 5 is connected with the bed frame assembly 6, so that the whole bed is driven to ascend or descend. When the bedstead 601 descends to the lowest point and a person needs to rest on the bedstead, the support leg 602 is pulled in the direction away from the support frame 603, and the support leg 602 drives the folding connecting frame 604 to reach the position shown in fig. 8, the connecting piece 606 and the folding connecting frame 604 prop against the support leg 602, so that the support leg 602 is perpendicular to the ground, and at the moment, the whole support assembly is in a support state. When the support assembly is to be collapsed, the rod 605 is pulled and the support leg 602 is pushed toward the support shelf 603. Due to the thrust, the support leg 602 drives the folding connecting frame 604 and the connecting piece 606 to move, so that the support leg 602 is folded under the support bracket 603, and the folded state of the support assembly is shown in fig. 9.

It should be noted that while the invention has been described in terms of the above-mentioned embodiments, there are many other embodiments of the invention. It will be apparent to those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention, and it is intended that all such changes and modifications be covered by the appended claims and their equivalents.

Claims

1. A lifting bed is characterized in that: comprises a bed frame assembly, a driving device, a lead screw assembly connected with the driving device, a supporting base and a supporting top seat; the lead screw assembly comprises a ball screw and supporting rods, the supporting rods are fixedly connected with a supporting base and a supporting top seat, and at least one group of lead screw assemblies is arranged; the bed frame assembly is connected with the screw rod assembly through a bed connecting assembly, and the bed connecting assembly comprises a connecting seat plate, a linear bearing fixedly connected with the connecting seat plate, a trapezoidal nut assembly, a welding piece, a rocker assembly and a shockproof pin positioned on the welding piece; the bed connecting assembly is fixedly connected with the bed frame assembly through the connecting seat plate, the support rod is connected with the bed connecting assembly through the linear bearing, and the ball screw is connected with the bed connecting assembly through the trapezoidal nut assembly; the welding piece is used for fixedly connecting the connecting seat plate and the linear bearing, the linear bearing is connected with the trapezoidal nut component through the rocker component, and the rocker component is rotatably connected with the trapezoidal nut component; the trapezoidal nut component comprises a trapezoidal nut bracket, an adjusting screw rod and a trapezoidal nut fixed in the trapezoidal nut bracket; the trapezoidal nut support is in shaft connection with the rocker assembly through an adjusting screw rod, and certain deviation between the ball screw and the supporting rod can be allowed by adjusting the arrangement of the screw rod; the ball screw converts the rotary motion of the screw into the ascending or descending linear motion of the bed connecting assembly through the trapezoidal nut in the bed connecting assembly.

2. The lift bed of claim 1, wherein: the driving device comprises a motor, a first belt wheel and a second belt wheel, wherein the first belt wheel and the second belt wheel are connected with a rotating shaft of the motor, the second belt wheel is connected with a ball screw, and the first belt wheel is connected with the second belt wheel through a synchronous belt.

3. The lift bed of claim 2, wherein: the motor is an electromagnetic braking motor.

4. The lift bed of claim 1, wherein: the ball screw is fixedly connected with the supporting top seat and the supporting base through the bearing seat assembly.

5. The lift bed of claim 1, wherein: the bed frame assembly comprises a bed frame and a support frame assembly arranged below the bed frame.

6. The lift bed of claim 5, wherein: the support frame assembly comprises a support frame and a plurality of support legs positioned below the support frame, the support frame is connected with the bed frame, and the support legs are rotatably connected with the support frame.

7. The lift bed of claim 1, wherein: the lifting bed further comprises a protection frame, the protection frame is fixedly connected with the supporting top seat and the supporting base, and the screw rod assembly is located in the protection frame.

8. The lift bed of claim 1, wherein: the lifting bed further comprises a human body sensor, and the sensor is located in the supporting top seat and the bed frame assembly.