Automatic brake type caster wheel

Abstract

The utility model provides an automatic brake formula caster, including support frame, brake piece, unbrake piece, elastic element, axle body, bearing, wheel body and brake gear, axle body sets up on support frame, and wheel body sets up on axle body through bearing, brake gear is connected with wheel body and rotates with wheel body synchronously, brake piece movably sets up on support frame, can move to with brake gear and is connected to prevent brake gear rotation's brake position, and moves to unbrake position of disengaging brake gear, elastic element acts on brake piece, and brake piece has the tendency of moving to brake position and maintaining at brake position through the elastic force, unbrake piece is connected with brake piece, is used for driving brake piece to move to unbrake position, in the utility model, through elastic element, brake piece is automatically moved to the brake position of being connected with brake gear in non -use state, thereby realizes automatic brake, effectively prevents equipment from accidental movement when nobody looks after, greatly promotes security.

Description

Technical Field

[0001] This utility model relates to the field of caster technology, and in particular to an automatic braking caster that can be widely used in movable equipment such as suitcases, trolleys, and shopping carts. Background Technology

[0002] Casters are key components of mobile devices such as suitcases and trolleys, greatly improving their mobility. However, on slopes or sloping surfaces, these devices are prone to slipping due to gravity, posing a potential risk of collision or tipping over.

[0003] Currently, some casters on the market have brake functions, but most of them are manual brake structures, requiring manual operation by the user to engage the brake. In actual use, users often forget or fail to operate the brake in time, leading to brake failure and a significant safety hazard. Therefore, the market urgently needs a caster structure that can automatically engage the brake after external force is removed and easily unlock when movement is needed. Utility Model Content

[0004] In order to solve the above-mentioned technical problems, this utility model provides an automatic braking caster that can automatically enter the braking state after the external force is removed when the equipment is not moving, thereby effectively preventing the equipment from moving accidentally. The caster can also be easily unlocked when it needs to be moved.

[0005] To achieve the above objectives, the present invention provides an automatic braking caster, comprising a support frame, a brake component, a brake release component, an elastic component, a wheel body, and a brake gear. The wheel is rotatably mounted on the support frame; The brake gear is connected to the wheel body and rotates synchronously with the wheel body; The brake component is movably mounted on the support frame and can be moved to a braking position where it engages with the brake gear to prevent the brake gear from rotating, and to a release position where it disengages from the brake gear. The elastic element acts on the brake element, and the elastic force causes the brake element to tend to move toward the braking position and maintain the braking position. The brake release component is connected to the brake component and is used to move the brake component to the brake release position.

[0006] As a further improvement of this utility model, the support frame includes a top plate and side plates located on the left and right sides of the top plate, the wheel body is disposed between the left and right side plates, and the brake gear is located on the left and right sides of the wheel body or on either side of the left or right.

[0007] As a further improvement of this utility model, the brake gears are located on the left and right sides of the wheel body respectively; the brake component has an inverted U-shaped structure, and its left and right sides can respectively engage with the corresponding brake gears.

[0008] As a further improvement of this utility model, the brake component is located below the top plate; the elastic component is a spring, with its two ends respectively abutting against the top plate and the brake component.

[0009] As a further improvement of this utility model, a guide post is provided on the upper side of the top plate; the brake release component is a straight plate structure, with one end connected to the brake component and the other end passing through the top plate and the guide post in sequence.

[0010] As a further improvement of this utility model, the moving direction of the brake component is vertically upward and downward; the brake gear is located on the lower side of the brake component, and the brake component is engaged with the brake gear by moving downward and disengaging from the brake gear by moving upward.

[0011] As a further improvement of this utility model, the upper end of the brake release member is configured to connect to the handle of a suitcase or trolley.

[0012] As a further improvement of this utility model, the support frame is provided with a guide groove, and the brake component is disposed on the guide groove and moves along the direction of the guide groove.

[0013] As a further improvement of this utility model, the connection between the brake gear and the wheel body is a spline connection.

[0014] The beneficial effects of this utility model are as follows: This utility model can achieve automatic braking, and is safe, reliable, and easy to operate. In this utility model, the elastic force of the elastic element causes the brake component to automatically move to the braking position where it engages with the brake gear when not in use, thereby achieving automatic braking and effectively preventing accidental movement of the equipment when unattended, greatly improving safety. When the equipment needs to be moved, simply pull the release brake component with external force to disengage the brake component from the brake gear to release the brake. Attached Figure Description

[0015] Figure 1 This is a three-dimensional schematic diagram of the overall structure of the caster; Figure 2 This is a front view of the overall structure of the caster; Figure 3 This is a three-dimensional schematic diagram of the caster after the wheel body is concealed. Marking description: support frame 1, top plate 11, side plate 12, guide groove 13, guide column 14, brake component 2, vertical arm 21, brake release component 3, elastic component 4, wheel body 5, brake gear 6. Detailed Implementation

[0016] The present invention will be further described below with reference to specific embodiments and accompanying drawings.

[0017] like Figure 1 As shown, an automatic braking caster includes a support frame 1, a brake component 2, a brake release component 3, an elastic component 4, a wheel body 5, and a brake gear 6.

[0018] The support frame 1 consists of a top plate 11 and two vertically downward extending side plates 12. The wheel 5 is rotatably mounted on the support frame 1 via a shaft and bearings. Two brake gears 6 are fixed to the left and right sides of the wheel 5 respectively via spline connection and rotate synchronously with the wheel 5.

[0019] The brake component 2 is an inverted U-shaped metal part. Its inverted U-shaped structure can avoid the wheel body 5. Its horizontal part is located below the top plate 11 of the support frame 1, and the vertical arms on the left and right sides of the horizontal part extend downward. The left and right side plates 12 of the support frame 1 are respectively provided with guide grooves 13. These guide grooves 13 are vertical guide grooves. The two vertical arms of the brake component 2 can be slidably engaged in the guide grooves 13 on the corresponding side, so that the brake component 2 can move up and down along the vertical direction of the guide grooves 13.

[0020] The elastic element 4 is preferably a compression spring, which is vertically installed between the top plate 11 and the horizontal part of the brake element 2, with its two ends abutting against both. Under the elastic force of the elastic element 4, the brake element 2 is always subjected to a downward thrust, causing the brake element 2 to tend to move downward.

[0021] The brake release component 3 is a long, straight plate. Its lower end is connected to the center of the horizontal part of the brake component 2, and its upper end passes vertically upward through the top plate 11 and the guide post 14 fixed to the upper surface of the top plate 11. The guide post 14 has an opening in the center to guide the brake release component 3 and ensure that it can only move up and down.

[0022] The casters described above have an automatic braking state and an automatic braking state.

[0023] Automatic braking state: When no one operates the release brake 3, under the elastic force of the elastic element 4, the brake element 2 is pushed down to the lowest position, i.e., the braking position. At this time, the lower ends of the two vertical arms of the brake element 2 are engaged in the tooth gaps of the two left and right brake gears 6, locking the gears and preventing them from rotating, thereby locking the wheel body 5 and preventing the caster from moving.

[0024] Release the brake: When the device needs to be moved, the user pulls the release brake component 3 upwards. The release brake component 3 causes the brake component 2 to overcome the elastic force of the elastic component 4 and move upwards along the vertical guide groove 13 to the release position. At this time, the vertical arm of the brake component 2 is completely disengaged from the brake gear 6, the brake gear 6 and the wheel body 5 can rotate freely, and the caster resumes its movement function.

[0025] Reset: When the release brake 3 is released, under the elastic force of the elastic element 4, the brake element 2 automatically moves down and engages with the brake gear 6 again, and the caster is locked again. This caster can be used on suitcases or trolleys. When used on a suitcase or trolley, the upper end of the release element 3 is configured to connect to the pull rod of the suitcase or trolley (not shown in the figure). Specifically, the upper end of the release element 3 is movably connected to the topmost section of the pull rod via a steel wire rope (not shown in the figure). The pull rod adopts a multi-section telescopic structure, and the topmost section of the pull rod and the adjacent section adopt a sliding groove fit structure, so that after the pull rod is fully extended to the use position, the topmost section of the pull rod can still retain a limited vertical movement relative to its adjacent sections. When the pull rod is pulled, the topmost section of the pull rod moves upward, which drives the release element 3 to move upward, that is, release the brake state of the caster. When the external force is removed, the section of the pull rod moves downward under the influence of gravity or the elastic element 4, and the caster returns to the brake state.

[0026] This design cleverly leverages existing user behavior: when a device needs to be moved, the user naturally pulls the lever. By linking the release mechanism 3 with the lever, the user can simultaneously trigger two functions when performing the single action of pulling the lever: first, moving the device via the lever; and second, releasing the brake by moving the release mechanism 3 upwards via the lever. This design creates an intuitive interaction logic: "pull to move, release to stop." This means that the two originally separate operations of "pulling the device to move" and "releasing the caster brake" are naturally combined into the single action of "pulling the lever," eliminating the need for additional unlocking operations. This greatly optimizes the operation logic, simplifies the operation steps, and provides a seamless and convenient user experience.

[0027] The above-described embodiments are merely illustrative of this utility model. Any equivalent embodiments made by those skilled in the art without departing from the technical features disclosed in this utility model, and without departing from the technical features of this utility model, shall still fall within the scope of the technical features of this utility model.

Claims

1. An automatic braking caster, characterized in that: Includes support frame, brake components, brake release components, elastic components, wheel body, and brake gear; The wheel is rotatably mounted on the support frame; The brake gear is connected to the wheel body and rotates synchronously with the wheel body; The brake component is movably mounted on the support frame and can be moved to a braking position where it engages with the brake gear to prevent the brake gear from rotating, and to a release position where it disengages from the brake gear. The elastic element acts on the brake element, and the elastic force causes the brake element to tend to move toward the braking position and maintain the braking position. The brake release component is connected to the brake component and is used to move the brake component to the brake release position.

2. The automatic braking caster according to claim 1, characterized in that: The support frame includes a top plate and side plates located on the left and right sides of the top plate. The wheel is disposed between the left and right side plates, and the brake gear is located on the left and right sides of the wheel or on either side of the wheel.

3. The automatic braking caster according to claim 2, characterized in that: The brake gears are located on the left and right sides of the wheel body respectively; the brake component has an inverted U-shaped structure, and its left and right sides can respectively engage with the corresponding brake gears.

4. The automatic braking caster according to claim 2, characterized in that: The brake component is located below the top plate; the elastic component is a spring, with its two ends abutting against the top plate and the brake component, respectively.

5. An automatic braking caster according to claim 2, characterized in that: A guide post is provided on the upper side of the top plate; the brake release component is a straight plate structure, with one end connected to the brake component and the other end passing through the top plate and the guide post in sequence.

6. The automatic braking caster according to claim 1, characterized in that: The braking component moves vertically up and down; the brake gear is located below the braking component, and the braking component engages with the brake gear by moving downward and disengages from the brake gear by moving upward.

7. An automatic braking caster according to claim 6, characterized in that: The upper end of the release device is configured to connect to the handle of a suitcase or trolley.

8. The automatic braking caster according to claim 1, characterized in that: The support frame is provided with a guide groove, and the brake component is disposed on the guide groove and moves along the direction of the guide groove.

9. An automatic braking caster according to claim 1, characterized in that: The connection between the brake gear and the wheel body is a spline connection.

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