A medical wheel with self-resetting function

Abstract

The present invention discloses a medical wheel with a self-resetting function, comprising a caster, a connecting shaft, a bracket, and a brake assembly. The caster is rotatably connected to the connecting shaft, the bracket is connected to the connecting shaft, the brake assembly comprises a first brake member and a second brake member. The first brake member comprises an electromagnet, an armature, and a conductive wire. The electromagnet and the armature are respectively connected to two sides of the caster, and the conductive wire is connected to the electromagnet. The second brake assembly comprises a fixed shaft and a brake body. The fixed shaft is connected to the bracket. The brake body is rotatably connected to the fixed shaft. The brake body is provided with a connecting hole. The conductive wire is provided with a linkage member. The conductive wire at the rear end of the linkage member passes through the connecting hole and is connected to a toggle member. An electric shock member is provided on the vehicle frame. The present invention improves braking stability by simultaneously braking both sides and the top of the caster. When the toggle member is released, the electromagnet and the armature automatically reset. The linkage member connected to the toggle member also automatically resets under the elastic action of a spring, achieving rapid reset after braking.

Description

Technical Field

[0001] The invention belongs to the technical field of casters, and in particular relates to a medical wheel with a self-resetting function. Background Art

[0002] Casters are a common product, often installed on the bottom of furniture, medical carts, lathes, and other equipment to enable flexible and convenient movement. Since the equipment needs to be stationary after moving, it is necessary to install a brake device on the caster.

[0003] Chinese patent CN201921908439.9 discloses a universal brake double wheel, comprising a main bracket, a secondary bracket, an axle body, two casters, a rotating kit, a brake part and a brake drive part. The main bracket comprises a longitudinally hollow axle seat and a semicircular cavity with a lower opening. A fixed axle hole and a brake extension hole are provided on the wall of the semicircular cavity. The axle seat is connected to the semicircular cavity through a guide hole. The secondary bracket comprises two semicircular frame plates, a pivot plate provided on the semicircular frame plates and a lower axle seat connecting the two semicircular frame plates. The pivot plate is provided with a fixed axle hole and a lower axle seat located at the fixed axle hole. The upper part has a pivot hole; the brake part includes a driving part, wheel brake parts located on both sides of the driving part, a pivot part, a stop plate connected to the pivot part and a brake plate with brake teeth; the brake driving part includes a pivot driving part, a transmission part, an arc-shaped guide part and a brake pedal; the main bracket and the auxiliary bracket are fixedly connected, and the axle seat and the lower axle seat are connected; the brake plate passes through the guide hole and cooperates with the rotating kit for braking; its special feature is that the driving part, wheel brake part, pivot part and the stop plate connected to the pivot part of the brake part are made of one-piece plastic material, and the brake plate is made of manganese steel plate.

[0004] However, existing casters have the following problems: slow reset after braking, unreliable braking, and poor wear resistance, which shortens the service life of the casters. Summary of the Invention

[0005] The purpose of the present invention is to propose a medical wheel with a self-resetting function in order to solve the problems of existing casters such as slow reset after braking, unreliable braking, poor wear resistance, and shortened service life of the casters.

[0006] In order to achieve the above-mentioned purpose, the present invention adopts the following technical solutions: a medical wheel with a self-resetting function, comprising a caster, a connecting shaft, a bracket and a brake assembly, the caster is rotatably connected to the connecting shaft, the bracket is connected to the connecting shaft, the brake assembly comprises a first brake member and a second brake member, the first brake member comprises an electromagnet, an armature and a conductive wire, the electromagnet and the armature are respectively connected to both sides of the caster, the conductive wire is connected to the electromagnet, the second brake member comprises a fixed shaft and a brake body, the fixed shaft is connected to the bracket, the brake body is rotatably connected to the fixed shaft, a connecting hole is provided on the brake body, a linkage member is provided on the conductive wire, the conductive wire at the rear end of the linkage member passes through the connecting hole and is connected to the toggle body, and an electric shock body is provided on the frame.

[0007] As a further description of the above technical solution:

[0008] The electromagnet and the armature are elastically connected to the left end and the right end of the inner side of the bracket respectively.

[0009] As a further description of the above technical solution:

[0010] The linkage member is provided with a spring, and the spring is located between the linkage member and the brake body.

[0011] As a further description of the above technical solution:

[0012] A brake pad is provided on the brake body, and the bottom of the brake pad matches the outer side wall of the caster.

[0013] As a further description of the above technical solution:

[0014] The brake pad is arranged in parallel with the caster.

[0015] As a further description of the above technical solution:

[0016] A guide body is provided on the bracket, and the conductive wire passes through the guide body to extend the linkage member.

[0017] As a further description of the above technical solution:

[0018] The shifting body is provided with an electric connecting body, and the electric connecting body and the electric contact body are located on the same horizontal line.

[0019] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0020] 1. In the present invention, a first brake member and a second brake member are arranged to cooperate with each other, and the electric contact member and the connecting member are brought into contact with each other by toggling the toggle body, so that the conductive wire is energized. After the electromagnet is energized, magnetism is generated, and the electromagnet is attracted to the armature, so that the electromagnet and the armature abut against the middle of the caster, thereby achieving caster braking. When the toggle body is pulled, the linkage body is driven to move, so that the spring on the linkage body abuts against the brake body, thereby causing the brake body to rotate, and when the brake pad abuts against the caster, the brake pad abuts against the top of the caster, achieving a braking effect. This structure improves the stability of braking by braking both sides and the top of the caster at the same time. When the hand releases the toggle body, the electromagnet is automatically de-energized, and the electromagnet and the armature are automatically reset. The linkage body connected to the toggle body is also automatically reset under the elastic action of the spring, so that the brake pad is away from the top of the caster, achieving rapid reset after braking.

[0021] 2. In the present invention, the first brake member and the second brake member cooperate with each other to achieve joint braking, which has a good braking effect. While braking in all directions, the braking force is balanced to avoid rollover caused by sudden braking. The brake pads are assisted by the first brake member to reduce wear and increase service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments. It should be understood that the following drawings only illustrate certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying any creative work.

[0023] Figure 1 The figure shows a side view of a medical wheel with a self-resetting function.

[0024] Figure 2 The figure is a schematic diagram of the connection structure between the conductive wire, the linkage part and the second brake part in a medical wheel with a self-resetting function.

[0025] Figure 3 This is a front view of a medical wheel with a self-resetting function.

[0026] Legend:

[0027] 1-castor; 2-connecting shaft; 3-bracket; 4-brake assembly (not marked); 41-first brake member; 411-electromagnet; 412-armature; 413-conductive wire; 42-second brake member; 421-fixed shaft; 422-brake body; 5-linkage member; 6-sliding body; 7-electric shock body; 8-spring; 9-brake pad; 10-guide body; 11-connecting body. DETAILED DESCRIPTION

[0028] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts shall fall within the scope of protection of the present invention.

[0029] To make the objectives, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings herein can be arranged and designed in various different configurations.

[0030] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention as claimed, but rather merely represents selected embodiments of the present invention. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without creative effort shall fall within the scope of protection of the present invention.

[0031] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings.

[0032] In the description of the embodiments of the present invention, it should be noted that the terms "upper" and "inner" etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, or are orientations or positional relationships in which the inventive product is usually placed when in use. These are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they should not be understood as limitations on the present invention.

[0033] In the description of the present invention, it should also be noted that, unless otherwise expressly specified or limited, the terms "disposed," "installed," "connected," and "connected" should be understood broadly. For example, they may refer to fixed connections, detachable connections, or integral connections; they may refer to direct connections, indirect connections through an intermediate medium, or internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0034] See also Figure 1-3The present invention provides a technical solution: a medical wheel with a self-resetting function, comprising a caster 1, a connecting shaft 2, a bracket 3 and a brake assembly 4, the caster 1 being rotatably connected to the connecting shaft 2, the bracket 3 being connected to the connecting shaft 2, the brake assembly 4 comprising a first brake member 41 and a second brake member 42, the first brake member 41 comprising an electromagnet 411, an armature 412 and a conductive wire 413, the electromagnet 411 and the armature 412 being respectively connected to both sides of the caster 1, the conductive wire 413 being connected to the electromagnet 411, the second brake member 42 comprising a fixed shaft 421 and a brake body 422, the fixed shaft 421 being connected to the bracket 3, the brake body 422 being rotatably connected to the fixed shaft 421, a connecting hole being provided on the brake body 422, a linkage member 5 being provided on the conductive wire 413, the conductive wire 413 at the rear end of the linkage member 5 being connected to the toggle body 6 through the connecting hole, and an electric shock body 7 being provided on the frame.

[0035] The electromagnet 411 and the armature 412 are elastically connected to the left and right ends of the inner side of the bracket 3 respectively.

[0036] The linkage member 5 is provided with a spring 8 , and the spring 8 is located between the linkage member 5 and the brake body 422 .

[0037] A brake pad 9 is provided on the brake body 422 , and the bottom of the brake pad 9 matches the outer side wall of the caster 1 .

[0038] The brake pad 9 is arranged in parallel with the caster 1, so that the brake pad can brake the caster.

[0039] The bracket 3 is provided with a guide body 10, and the conductive wire 413 passes through the guide body 10 and extends to the linkage member 5. The automatic reset of the brake pad is achieved through the cooperation between the linkage member and the spring. The guide body can guide the conductor to prevent the conductive wire from being entangled on the caster.

[0040] The paddle body 6 is provided with a connecting body 11, and the connecting body 11 and the contact body 7 are located at the same horizontal line, so that the connecting body 11 and the contact body 7 are energized as soon as they come into contact.

[0041] Working principle: By setting the first brake member and the second brake member to cooperate with each other, the electric contact body and the connecting body are brought into contact with each other by toggling the toggle body, so that the conductive wire is energized, and the electromagnet generates magnetism after being energized, and is attracted to the armature, so that the electromagnet and the armature abut against the middle of the caster to achieve the caster brake. When the toggle body is pulled, the linkage body is driven to move, so that the spring on the linkage body abuts against the brake body, thereby causing the brake body to rotate. When the brake pad abuts against the caster, the brake pad abuts against the top of the caster to achieve the braking effect. This structure is achieved by The brakes are applied simultaneously with the top of the caster to improve the stability of the brake. When the hand releases the toggle body, the electromagnet is automatically powered off, the electromagnet and the armature are automatically reset, and the linkage body connected to the toggle body is also automatically reset under the elastic action of the spring, so that the brake pads are away from the top of the caster to achieve rapid reset after braking. At the same time, the first brake member and the second brake member cooperate with each other to achieve joint braking with good braking effect. While braking in all directions, the brake force is balanced to avoid rollover caused by sudden braking. The brake pads are assisted by the first brake member to reduce wear and increase service life.

[0042] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solution and inventive concept of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. A medical wheel with a self-resetting function, characterized in that: The invention comprises a caster (1), a connecting shaft (2), a bracket (3) and a brake assembly (4), wherein the caster (1) is rotatably connected to the connecting shaft (2), the bracket (3) is connected to the connecting shaft (2), the brake assembly (4) comprises a first brake member (41) and a second brake member (42), the first brake member (41) comprises an electromagnet (411), an armature (412) and a conductive wire (413), the electromagnet (411) and the armature (412) are respectively connected to both sides of the caster (1), the conductive wire (413) is connected to the armature (412) and the conductive wire (413) is connected to the armature (412). 3) connected to the electromagnet (411), the second brake member (42) includes a fixed shaft (421) and a brake body (422), the fixed shaft (421) is connected to the bracket (3), the brake body (422) is rotatably connected to the fixed shaft (421), a connection hole is provided on the brake body (422), a linkage member (5) is provided on the conductive wire (413), the conductive wire (413) at the rear end of the linkage member (5) passes through the connection hole and is connected to the toggle body (6), and an electric shock body (7) is provided on the frame.

2. The medical wheel with self-resetting function according to claim 1, characterized in that: The electromagnet (411) and the armature (412) are elastically connected to the left end and the right end of the inner side of the bracket (3), respectively.

3. The medical wheel with self-resetting function according to claim 2, characterized in that: A spring (8) is provided on the linkage member (5), and the spring (8) is located between the linkage member (5) and the brake body (422).

4. The medical wheel with self-resetting function according to claim 1, characterized in that: A brake pad (9) is provided on the brake body (422), and the bottom of the brake pad (9) matches the outer side wall of the caster (1).

5. The medical wheel with self-resetting function according to claim 4, characterized in that: The brake pad (9) is arranged parallel to the caster (1).

6. The medical wheel with self-resetting function according to claim 1, characterized in that A guide body (10) is provided on the bracket (3), and the conductive wire (413) passes through the guide body (10) to extend the linkage member (5).

7. The medical wheel with self-resetting function according to claim 1, characterized in that: The toggle body (6) is provided with an electric connecting body (11), and the electric connecting body (11) and the electric contact body (7) are located on the same horizontal line.

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