CN115005627A

CN115005627A - Wheel, electric bed pulley and electric bed

Info

Publication number: CN115005627A
Application number: CN202110238052.2A
Authority: CN
Inventors: 单华锋; 怀群良; 李强
Original assignee: Keeson Technology Corp Ltd
Current assignee: Keeson Technology Corp Ltd
Priority date: 2021-03-04
Filing date: 2021-03-04
Publication date: 2022-09-06
Also published as: WO2022183847A1

Abstract

To this end, the present invention provides a wheel, an electric bed pulley and an electric bed, the wheel comprising: a cylindrical wheel body and a buffer part; the buffer part is arranged on the wheel surface of the wheel body, and the diameter of the buffer part is larger than that of the wheel body. The buffer part is additionally arranged on the surface of the wheel body to cope with impact and friction, and the wheel body is applied to the electric bed pulley and the electric bed, so that the effects of buffering and reducing noise are achieved, and the user experience is improved.

Description

Wheel, electric bed pulley and electric bed

Technical Field

The invention relates to the technical field of machinery, in particular to a wheel, an electric bed pulley and an electric bed.

Background

In order to improve the comfort level of beddo, satisfy user's demand, promote the experience sense that beddo used, noise decibel when reducing the use gives the more quiet sleep environment of customer. The main material of the pulley of the electric bed on the market at present is plastic pulley and is matched with a corresponding sliding bearing. Produce great abnormal sound easily when pulley and bedstead, bed board striking, when vibrations massage motor opens or produce the vibration because of other reasons on the electric bed simultaneously, the wheel collides with the bedstead, produces resonance noise easily.

Disclosure of Invention

The invention provides a wheel, which aims to solve the technical problem that noise is easy to generate in the prior art.

To this end, the invention provides a wheel comprising: a cylindrical wheel body and a buffer part; the buffer part is arranged on the wheel surface of the wheel body, and the diameter of the buffer part is larger than that of the wheel body.

Further, the buffer part is a rubber ring, a rubber buffer layer, a flocking buffer layer or a high-elasticity plastic buffer layer.

Furthermore, a limiting ring is arranged on one side of the wheel body, the diameter of the limiting ring is larger than that of the wheel body and the buffering portion, and the limiting ring and the wheel body are located on the same rotating axis.

Further, the wheel body and the limiting ring are integrally formed.

Furthermore, the wheel surface of the wheel body is provided with at least one annular groove, the groove is matched with the rubber ring, and the rubber ring is sleeved on the groove.

Furthermore, be equipped with two recesses on the wheel face of wheel, all overlap on the recess and be equipped with the rubber ring.

Further, the wheel body is made of plastic.

Further, the plastic comprises at least one of ABS plastic, polyoxymethylene, nylon, or reinforced polyurethane.

According to the invention, the buffering part is additionally arranged on the surface of the wheel body to cope with impact and friction, so that the noise is reduced, and the user experience is improved

The invention provides an electric bed pulley, which comprises: any of the above wheels and T-shaped pin shafts; the wheel is provided with a through hole along the rotating axis of the wheel, and a pin shaft penetrates through the through hole; the pin shaft penetrates through the through hole and is rotatably connected with the wheel; the tail of the pin shaft is provided with a limiting part.

Furthermore, at least one concave hole is formed in the pin shaft, and an elastic mechanism forming pre-tightening force with the inner wall of the through hole is arranged in the concave hole.

Further, the elastic mechanism comprises: the spring and the ball, the spring with the ball is located place in proper order inside and outside the shrinkage pool, the top of ball surpasss the top edge of shrinkage pool.

The invention achieves the purposes of quick installation and buffering by applying the special pin shaft structure, thereby dealing with impact and friction, reducing the generation of noise and improving the user experience

The present invention also provides an electric bed, comprising: the electric bed pulley is arranged and rotatably connected with the bed frame, the bed plate is arranged on the bed frame, and the bed frame drives the electric bed pulley to roll along the bottom surface of the bed plate and drive the corresponding bed plate to turn over relative to the bed frame. The purpose of buffering and noise reduction is achieved by applying the electric bed pulley in the electric bed, the noise problem in the operation process of the electric bed is solved, and the comfort level and the customer satisfaction degree of customers during use are improved.

Drawings

Other features, objects and advantages of the invention will become more apparent upon reading of the detailed description of non-limiting embodiments made with reference to the following drawings:

fig. 1 is a schematic perspective view of a wheel according to a first embodiment of the present invention;

FIG. 2 is a front view of a wheel according to a second embodiment of the present invention;

FIG. 3 is a front view of a wheel according to a third embodiment of the present invention;

fig. 4 is a schematic structural view of an electric bed pulley according to an embodiment of the present invention;

fig. 5 is a schematic perspective view of an electric bed according to an embodiment of the present invention.

Description of reference numerals:

1-wheel body, 2-rubber ring, 3-pin shaft, 5-bed board, 6-bed frame, 11-wheel surface, 12-limit ring, 13-groove, 14-through hole, 31-limit part, 32-concave hole and 41-spring.

Detailed Description

The present invention is described in further detail below with reference to the attached drawing figures.

Fig. 1 is a schematic perspective view of a wheel according to a first embodiment of the present invention, and as shown in fig. 1, the wheel provided by the present invention includes: a cylindrical wheel body 1 and a buffer part; the buffer part is arranged on the wheel surface 11 of the wheel body 1, and the diameter of the buffer part is larger than that of the wheel body 1.

When the wheel collides with other objects, rubs or shakes, easily produces great abnormal sound, responds to impact and friction through set up buffer portion on wheel body 1 surface, and the production of noise abatement improves user experience.

Preferably, the buffer part is a rubber ring 2, a rubber buffer layer, a flocking buffer layer or a high elastic plastic buffer layer.

The rubber is a high-elasticity polymer material capable of being reversibly deformed, is rich in elasticity at room temperature, can generate large deformation under the action of small external force, and can recover the original shape after the external force is removed; the flocking buffer layer is used for vertically fixing short fibers on the surface of the wheel body 1 coated with the adhesive; the process of plastic is known as flocking. The high-elasticity plastic buffer layer comprises at least one high-elasticity plastic of polyethylene terephthalate (PET), high-density polyethylene (HDPE) or polyvinyl chloride (PVC); by utilizing the resilience of the materials, even if the wheel body 1 collides, rubs or vibrates with other objects, the good anti-collision, anti-friction and shock-absorbing effects can be achieved, the noise is reduced, the cost is low, especially, the rubber ring can be formed independently, the process requirement is low, the rubber ring is suitable for large-scale production, and the cost is extremely low.

Further, fig. 2 is a schematic view of a front view structure of a wheel according to a second embodiment of the present invention, as shown in fig. 2, a limiting ring 12 is disposed on one side of the wheel body 1, a diameter of the limiting ring 12 is larger than diameters of the wheel body 1 and the buffering portion, and the limiting ring 12 and the wheel body 1 are located on the same rotation axis.

The spacing ring 12 is used for using with the slide rail cooperation, and the spacing ring 12 can block at the edge of slide rail for the relative position of restriction wheel body 1 and slide rail avoids wheel and slide rail dislocation under the circumstances that does not influence the wheel rotation, prevents to lead to the friction production wearing and tearing of other parts and slide rail because of the dislocation, and extension part life promotes product reliability.

Preferably, the wheel body 1 and the limiting ring 12 are integrally formed, which is helpful to improve the structural strength of the wheel and prevent cracking and the like in the use process.

Further, fig. 3 is a schematic front view of a wheel according to a third embodiment of the present invention, as shown in fig. 1 to 3, at least one annular groove 13 is formed on a wheel surface 11 of the wheel body 1, the groove 13 is matched with the rubber ring 2, and the rubber ring 2 is sleeved on the groove 13.

The recess 13 that adds on the wheel body 1 is used for holding rubber ring 2, prevents that rubber ring 2 from droing from wheel body 1, and when rubber ring 2 received the pressure-bearing, because self characteristic can be by the inside compression of earlier recess, damage rubber ring when preventing that wheel face 11 from taking place violent collision, frictional contact with other objects, the life of extension wheel especially can guarantee the long-term use of rubber ring 2, and the function of guaranteeing to cushion to fall makes an uproar is effective for a long time.

Further, be equipped with two recesses 13 on the wheel face 11 of wheel, all overlap on the recess 13 and be equipped with rubber ring 2.

Set up a rubber ring in two recesses 13 respectively, can play balanced effect, improve the adaptability and the stability of wheel, prevent that the atress is uneven to produce too much wearing and tearing, prolong the life of wheel, promote the buffering and fall the effect of making an uproar.

Further, the wheel body 1 is made of plastic. Preferably at least one of ABS plastic, Polyoxymethylene (POM), nylon or reinforced Polyurethane (PRT).

The plastic can be processed into products with various shapes according to the use requirements, the processing technology is simple, the plastic is suitable for large-scale mechanical production, the weight is light, and materials with various special properties can be prepared by changing the formula and the processing technology. The ABS plastic is a terpolymer of three monomers of acrylonitrile (A), butadiene (B) and styrene (S), has the common performance of three components, wherein A ensures that the ABS plastic is resistant to chemical corrosion and heat and has certain surface hardness, B ensures that the ABS plastic has high elasticity and toughness, and S ensures that the ABS plastic has the processing and forming characteristics of thermoplastic plastic and improves the electrical performance. Therefore, the ABS plastic is a material with easily available raw materials, good comprehensive performance, low price and wide application. Polyoxymethylene (POM) has metal-like hardness, strength, and stiffness, has good self-lubricity, good fatigue resistance over a wide range of temperatures and humidity, and is elastic. The reinforced Polyurethane (PRT) has better impact resistance, flexibility, weather resistance and environmental protection. The materials can meet the strength requirement of the wheel and the requirement of large-scale production, and are low in cost and easy to process.

Fig. 4 is a schematic structural view of an electric bed pulley according to an embodiment of the present invention, as shown in fig. 1 to 4, the electric bed pulley includes: a wheel and T-shaped pin 3 according to any one of claims 1 to 7; wherein, the wheel is provided with a through hole 14 for the pin shaft 3 to pass through along the rotating axis; the pin shaft 3 penetrates through the through hole 14 to be rotatably connected with the wheel; the tail of the pin shaft 3 is provided with a limiting part 31.

The electric bed pulley can be applied to an electric bed. The pin shaft 3 is used for connecting the wheel with other components and used as a rotating shaft to ensure the rotation of the wheel. The pin shaft 3 is prevented from being separated from the wheel through the limiting part 31 after penetrating through the wheel, the limiting part can adopt a bolt or a nut matched with the pin shaft 3, the pin shaft 3 is limited by arranging a corresponding pin hole or a corresponding thread at the tail part of the pin shaft 3, and the pin shaft 3 is prevented from falling off in the rotating process; preferably, the pin 3 can also be screwed directly into a screw hole on the electric bed. Simple and fast, convenient and fast installation.

Furthermore, at least one concave hole 32 is formed in the pin shaft 3, and an elastic mechanism 4 forming a pre-tightening force with the inner wall of the through hole 14 is arranged in the concave hole 32.

The pin shaft 3 is connected with the wheel in a rotating mode, but a little clearance still exists at the joint of the pin shaft 3 and the inner wall of the through hole 14 of the wheel, so that the high-precision machining cost is too high, and the high-precision machining cost is not suitable for industrial application in the product. The elastic body which is slightly protruded is arranged on the axial surface of the pin shaft 3 to fill the gap, the elastic body can be rubber, silica gel or high-elasticity plastic, and the like, the elastic body can be added to overcome the process defect, when the wheel resonates along with the electric bed, such as the resonance caused by the vibration of a massage device, the vibration noise can not be caused, two concave holes 32 can also be arranged at the joint of the pin shaft 3 and the inner wall of the through hole 14 of the wheel, the elastic mechanisms 4 are correspondingly arranged in the two concave holes 32, the number of the concave holes 32 can also be 3 or 5, and the concave holes 32 can be symmetrically arranged and can also be uniformly or alternatively distributed. The concave hole 32 is arranged near the middle of the pin shaft 3, so that the possibility of contact between the pin shaft 3 and the inner wall of the through hole 14 can be reduced, and a buffering effect can be achieved.

Preferably, said elastic means 4 comprise: the spring 41 and the ball 42 are arranged in the concave hole 32 and are sequentially placed from inside to outside, and the top of the ball 42 exceeds the upper edge of the concave hole 32. Through the cooperation of spring 41 and ball 42 as the buffering, avoid wheel and other object collision, friction, reduce the production of noise.

Preferably, the concave hole 32 is tapered from the inside to the outside to prevent the ball 42 from being ejected, thereby facilitating the insertion and installation of the pin 3.

In addition, the present invention further provides an electric bed, fig. 5 is a schematic perspective view of an electric bed according to an embodiment of the present invention, and as shown in fig. 5, the electric bed includes: the electric bed comprises electric bed pulleys, a plurality of bed boards 5 and a bed frame 6, wherein the electric bed pulleys are arranged on the bed frame 6 and are rotatably connected with the bed frame 6, the bed board 5 is arranged on the bed frame 6, and the bed frame 6 drives the electric bed pulleys to roll along the bottom surface of the bed board 5 and drive the corresponding bed board 5 to overturn relative to the bed frame 6.

The bedstead 6 drives at least one of the plurality of bed boards 5 to turn over, and the deformation of the bed surface is realized to meet the requirements of different sleeping postures. The electric bed pulley can be arranged on the bedstead 6 and used for sliding inside the bedstead 6 or driving the bed board 5 to turn over, if the electric bed pulley is rotatably connected with the bedstead 6 and is abutted against the bottom surface of the bed board, the electric bed pulley rolls along the bed board to push the bed board to turn over, so that the bed surface is deformed. Through using above arbitrary beddo pulley reach the buffering and fall the purpose of making an uproar in the beddo, improve the noise problem of beddo operation in-process, comfort level, customer satisfaction when improving customer's use.

Other embodiments of the invention will be apparent to those skilled in the art from consideration of the specification and practice of the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of the invention following, in general, the principles of the invention and including such departures from the present disclosure as come within known or customary practice within the art to which the invention pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the invention being indicated by the following claims.

It will be understood that the invention is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof.

Claims

1. A wheel, comprising: a cylindrical wheel body and a buffer part;

the buffer part is arranged on the wheel surface of the wheel body, and the diameter of the buffer part is larger than that of the wheel body.

2. The wheel according to claim 1, wherein the cushioning portion is a rubber ring, a rubber cushion, a flocked cushion, or a highly elastic plastic cushion.

3. The wheel according to claim 2, wherein a retaining ring is provided on one side of the wheel body, the diameter of the retaining ring is larger than the diameter of the wheel body and the diameter of the buffer portion, and the retaining ring and the wheel body are on the same rotation axis.

4. A wheel according to claim 3, wherein the wheel body is integrally formed with the retaining ring.

5. The wheel according to any one of claims 2 to 4, wherein at least one annular groove is provided on the wheel surface of the wheel body, the groove is matched with the rubber ring, and the rubber ring is sleeved on the groove.

6. The wheel according to claim 5, wherein two grooves are provided on the tread of the wheel, and a rubber ring is sleeved on each groove.

7. The wheel according to claim 6, wherein said wheel body is made of plastic.

8. The wheel according to claim 7, wherein the plastic comprises at least one of ABS plastic, polyoxymethylene, nylon, or reinforced polyurethane.

9. An electric bed block, comprising: a wheel and T-shaped pin according to any one of claims 1 to 8;

the wheels are provided with through holes along the rotating axes of the wheels, and pin shafts can penetrate through the through holes;

the pin shaft penetrates through the through hole to be rotationally connected with the wheel;

the tail of the pin shaft is provided with a limiting part.

10. The electric bed pulley according to claim 9, wherein the pin has at least one recess formed therein, and wherein the recess has an elastic mechanism for forming a pre-load force with an inner wall of the through hole.

11. The beddo pulley as claimed in claim 10, wherein the resilient mechanism comprises: the spring with the ball is located place in proper order inside and outside in the shrinkage pool, the top of ball surpasss the top edge of shrinkage pool.

12. An electric bed, comprising: the motorized bed pulley of any one of claims 9 to 11, a plurality of bed plates, and a bed frame, wherein the motorized bed pulley is rotatably connected to the bed frame, the bed plates are disposed on the bed frame, and the bed frame drives the motorized bed pulley to roll along the bottom surface of the bed plates and to turn the corresponding bed plates relative to the bed frame.