Trundle brake pedal and trundle using same

Abstract

The trundle brake pedal comprises a pedal body, a left side plate extending downwards is arranged on the left side of the pedal body, and a right side plate extending downwards is arranged on the right side of the pedal body. The lower end edge position of the left side plate and the lower end edge position of the right side plate are correspondingly provided with flanging plates horizontally extending towards the interior of a cavity between the left side plate and the right side plate respectively. In the braking process, the pedal body makes contact with the upper side face of the braking end of the braking elastic piece through the flanging plates located on the left side and the right side, the effective contact area between the braking pedal and the upper side face of the braking end of the braking elastic piece is obviously increased, and therefore pressing force on the pedal body can be effectively dispersed on the braking elastic piece. According to the trundle brake elastic piece, local stress of the brake elastic piece is prevented from being too large, buckling deformation of the brake elastic piece is effectively prevented, the stability and safety of the trundle brake process are improved, meanwhile, the abrasion speed of the brake elastic piece is effectively reduced, and the service life of the brake elastic piece is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of casters, in particular to a caster brake pedal and a caster using the same. Background Art

[0002] Casters are a general term, including movable casters and fixed casters. Movable casters are what we call universal wheels, and their structure allows 360-degree rotation; fixed casters are also called fixed casters, which have no rotating structure and cannot turn. Universal casters are widely used in technical fields such as medical equipment, industrial equipment, and furniture due to their light operation and flexible steering. Casters generally have a brake mechanism. When the furniture or equipment is moved to a specified position, the brake mechanism is activated to fix the roller so that it cannot roll. Casters with brakes in the prior art generally adopt a brake pad structure, and the roller is usually made of rubber. The brake pad is used to press the roller, and the friction between the brake pad and the roller is used to brake.

[0003] like Figures 1-2 As shown, a universal caster comprises a bracket 1, a fixing plate 2 capable of horizontal rotation is installed on the upper end of the bracket 1, a roller 3 is rotatably installed on the inner side of the lower end of the bracket 1, and two ear plates 1-1 extending to one side thereof are correspondingly provided on the upper end of the bracket 1, a brake spring piece 4 located on the lower side and a brake pedal located on the upper side are hingedly installed on the inner sides of the two ear plates 1-1, and the brake pedal comprises a pedal body 5, a left side plate 5-5 extending downward is provided on the left side of the pedal body 5, and a right side plate 5-6 extending downward is provided on the right side, the lower end edge of the left side plate 5-5 corresponds to the left edge of the upper side surface of the braking end of the brake spring piece 4, and the lower end edge of the right side plate 5-6 corresponds to the right edge of the upper side surface of the braking end of the brake spring piece 4. When braking, the operator applies a downward driving force to the free end of the brake pedal, forcing the brake pedal to rotate with the hinge point as the fulcrum. At the same time, the lower edge of the left side plate 5-5 is pressed against the left edge of the upper end surface of the braking end of the brake spring 4, and the lower edge of the right side plate 5-6 is pressed against the right edge of the upper end surface of the braking end of the brake spring 4, driving the braking end of the brake spring 4 to move downward and press the roller 3 to achieve braking. The problem with the universal wheel caster is that the thickness of the left and right side plates on the brake pedal is generally only 2 to 3 mm. When braking, the brake pedal only relies on the lower edge of the left and right side plates to contact the left and right side edges of the upper side surface of the braking end of the brake spring, and the effective contact area of ​​the two is very small, which causes the brake spring to be subjected to concentrated force and warp and deform, affecting the braking stability and safety of the caster during long-term use; at the same time, during the braking process, the wear of the brake spring is also relatively serious, which restricts the service life of the brake spring. To this end, the utility model proposes a caster brake pedal with a novel structure and a caster using the same, in order to solve the above technical problems. Summary of the invention

[0004] The purpose of the utility model is to overcome the defects existing in the prior art and provide a caster brake pedal and a caster using the same, wherein horizontally extending flange plates are arranged on the lower end edges of the left and right side plates on the pedal body, and when braking, the pedal body contacts the upper side surface of the braking end of the brake spring through the flange plates located on the left and right sides, thereby significantly increasing the effective contact area between the brake pedal and the upper side surface of the braking end of the brake spring, so that the compressive force on the pedal body can be effectively dispersed on the brake spring, avoiding excessive local force on the brake spring, and effectively preventing the brake spring from warping and deforming, which helps to improve the stability and safety of the caster braking process, and at the same time effectively reduces the wear rate of the brake spring and prolongs the service life of the brake spring; the overall structural design is simple, the preparation and implementation feasibility is high, and the practicability is strong.

[0005] One of the purposes of the utility model is to design a caster brake pedal, including a pedal body, wherein the left side of the pedal body is provided with a left plate extending downward, and the right side is provided with a right plate extending downward, and the lower edge positions of the left plate and the lower edge positions of the right plate are respectively provided with flange plates extending horizontally into the cavity between the left plate and the right plate.

[0006] The utility model discloses a caster brake pedal, which is provided with horizontally extending flange plates on the lower end edges of the left and right side plates on the pedal body. When braking, the pedal body contacts the upper side surface of the braking end of the brake spring piece through the flange plates on the left and right sides, which significantly increases the effective contact area between the brake pedal and the upper side surface of the braking end of the brake spring piece, so that the compressive force on the pedal body can be effectively dispersed on the brake spring piece, avoiding excessive local force on the brake spring piece, and effectively preventing the brake spring piece from warping and deformation, which helps to improve the stability and safety of the caster braking process, and at the same time effectively reduces the wear rate of the brake spring piece and prolongs the service life of the brake spring piece. The overall structural design is simple, the preparation and implementation feasibility is high, and the practicability is strong.

[0007] The preferred technical solution is that the flanged plate is formed by bending the lower edge of the left plate or the lower edge of the right plate in one piece. The flanged plate is integrally formed at the lower edge of the left plate or the lower edge of the right plate, which is convenient for processing and manufacturing.

[0008] A further preferred technical solution is that the width of the flange plate is more than twice its thickness. The width of the flange plate is reasonably designed, which ensures that the flange plate has a sufficient effective contact area with the brake end of the brake spring, while not increasing the weight of the brake pedal, ensuring the lightness of the brake pedal.

[0009] A further preferred technical solution is that the pedal body includes a straight section, the front end of the straight section is provided with a curved section, the rear end of the straight section is provided with an inclined plate section extending upward to the rear side, the concave curved side of the curved section faces upward, the front end of the curved section is provided with a straight eaves body, the left side plate is located on the left side of the straight section, the curved section and the straight eaves body, and the right side plate is located on the right side of the straight section, the curved section and the straight eaves body. The pedal body has a reasonable structural design, the inclined plate section ensures that the rear end of the pedal body can be overlapped on the bracket of the caster, and the concave curved section ensures that the front end of the pedal body is easy to step on when braking.

[0010] A further preferred technical solution is that the caster brake pedal is formed by bending the same plate body, which is convenient to manufacture and ensures the high processing efficiency of the caster brake pedal.

[0011] A further preferred technical solution is that the flange plate is located at the rear side of the lower edge of the left plate or the rear side of the lower edge of the right plate, the flange plate is a special V-shaped structure, and the corner of the flange plate is an arc-shaped transition surface structure, the lower edge of the left plate and the lower edge of the right plate are respectively provided with a notch groove 1 adjacent to the front end of the corresponding flange plate, and the left and right side edges of the inclined plate section are respectively provided with a notch groove 2 adjacent to the rear end of the straight section. The corner of the flange plate is an arc-shaped transition surface structure to ensure the overall roundness of the lower side of the flange plate and avoid hard crushing of the brake spring; the notch groove 1 and the notch groove 2 ensure the overall bending convenience of the caster brake pedal of the utility model.

[0012] A further preferred technical solution is that a plurality of anti-slip convex strips are provided on the upper side of the straight section.

[0013] A further preferred technical solution is that the rear end of the left side plate and the rear end of the right side plate are respectively provided with corresponding mounting holes 2.

[0014] The second object of the utility model is to design a caster, the caster comprising the caster brake pedal. Compared with the traditional caster, the caster of the utility model effectively increases the contact area between the brake pedal and the upper side surface of the brake spring end, thereby significantly improving the stability and safety of the brake, and extending the service life of the brake spring.

[0015] The advantages and beneficial effects of the utility model are:

[0016] 1. The utility model provides a caster brake pedal, which is provided with horizontally extending flange plates on the lower end edges of the left and right side plates on the pedal body. When braking, the pedal body contacts the upper side surface of the braking end of the brake spring through the flange plates on the left and right sides, which significantly increases the effective contact area between the brake pedal and the upper side surface of the braking end of the brake spring, so that the pressure on the pedal body can be effectively dispersed on the brake spring, avoiding excessive local force on the brake spring, effectively preventing the brake spring from warping and deformation, helping to improve the stability and safety of the caster braking process, and effectively reducing the wear rate of the brake spring, extending the service life of the brake spring; the overall structural design is simple, the preparation and implementation feasibility is high, and the practicability is strong.

[0017] 2. The width of the flanged plate is more than twice its thickness. The width of the flanged plate is reasonably designed to ensure that the flanged plate has sufficient effective contact area with the brake end of the brake spring, while not increasing the weight of the brake pedal, ensuring the lightness of the brake pedal.

[0018] 3. Compared with traditional casters, the contact area between the brake pedal and the upper side of the brake spring end of the caster of the utility model is effectively increased, thereby significantly improving the stability and safety during braking, and at the same time extending the service life of the brake spring. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a stereogram of a caster in the background technology;

[0020] Figure 2 It is a longitudinal cross-sectional view of a caster in the background technology;

[0021] Figure 3 is a left front side top view of a caster brake pedal in Example 1;

[0022] Figure 4 is a right rear side top view of a caster brake pedal in Example 1;

[0023] Figure 5 is a bottom-up perspective view of a caster brake pedal in Example 1;

[0024] Figure 6 is a left front side top view of a caster in Example 2;

[0025] Figure 7 is a longitudinal cross-sectional view of a caster in Example 2;

[0026] Figure 8 This is a stereoscopic view of a caster in Example 2 from an upward angle.

[0027] In the figure: 1, bracket; 2, fixing plate; 3, roller; 4, brake spring; 5, pedal body; 6, pin shaft; 1-1, ear plate; 1-1a, mounting hole one; 5-1, straight section; 5-1a, anti-skid convex strip; 5-2, arc section; 5-3, inclined plate section; 5-4, straight eaves; 5-5, left side plate; 5-6, right side plate; A, flange plate; B, mounting hole two; C, notch groove one; D, notch groove two. DETAILED DESCRIPTION

[0028] The following is a further description of the specific implementation of the present invention in conjunction with the accompanying drawings and embodiments. The following embodiments are only used to more clearly illustrate the technical solution of the present invention, and cannot be used to limit the protection scope of the present invention.

[0029] Example 1

[0030] like Figures 3 to 5 As shown, the utility model is a caster brake pedal, including a pedal body 5, wherein the left side of the pedal body 5 is provided with a left side plate 5-5 extending downward, and the right side is provided with a right side plate 5-6 extending downward, and the lower edge positions of the left side plate 5-5 and the lower edge positions of the right side plate 5-6 are respectively provided with a flange plate A extending horizontally into the cavity between the left side plate 5-5 and the right side plate 5-6.

[0031] Preferably, the flange plate A is formed by integrally bending the lower edge of the left side plate 5-5 or the lower edge of the right side plate 5-6.

[0032] Further preferably, the width dimension of the flange plate A is more than twice its thickness dimension.

[0033] Further preferably, the pedal body 5 includes a straight section 5-1, a curved surface section 5-2 is provided at the front end of the straight section 5-1, an inclined plate section 5-3 extending upward and rearward is provided at the rear end of the straight section 5-1, the concave curved surface side of the curved surface section 5-2 faces upward, a straight eaves body 5-4 is provided at the front end of the curved surface section 5-2, the left side plate 5-5 is located on the left side of the straight section 5-1, the curved surface section 5-2 and the straight eaves body 5-4, and the right side plate 5-6 is located on the right side of the straight section 5-1, the curved surface section 5-2 and the straight eaves body 5-4.

[0034] Further preferably, the caster brake pedal is formed by bending the same plate.

[0035] Further preferably, the flange plate A is located on the rear side of the lower edge of the left side plate 5-5 or the rear side of the lower edge of the right side plate 5-6, the flange plate A is an irregular V-shaped structure, and the corner of the flange plate A is an arc-shaped transition surface structure, the lower edge of the left side plate 5-5 and the lower edge of the right side plate 5-6 are respectively provided with a notch groove 1 C adjacent to the front end of the corresponding flange plate A, and the left and right side edges of the inclined plate section 5-3 are respectively provided with a notch groove 2 D adjacent to the rear end of the straight section 5-1.

[0036] Further preferably, a plurality of anti-slip convex strips 5-1a are provided on the upper side of the straight section 5-1.

[0037] Further preferably, corresponding mounting holes 2 B are respectively provided at the rear end of the left side plate 5 - 5 and the rear end of the right side plate 5 - 6 .

[0038] The utility model discloses a caster brake pedal, which is provided with horizontally extending flange plates on the lower end edges of the left and right side plates on the pedal body. When braking, the pedal body contacts the upper side surface of the braking end of the brake spring piece through the flange plates on the left and right sides, which significantly increases the effective contact area between the brake pedal and the upper side surface of the braking end of the brake spring piece, so that the compressive force on the pedal body can be effectively dispersed on the brake spring piece, avoiding excessive local force on the brake spring piece, and effectively preventing the brake spring piece from warping and deformation, which helps to improve the stability and safety of the caster braking process, and at the same time effectively reduces the wear rate of the brake spring piece and prolongs the service life of the brake spring piece. The overall structural design is simple, the preparation and implementation feasibility is high, and the practicability is strong.

[0039] Example 2

[0040] like Figures 6 to 8 As shown, the utility model is a caster, comprising a bracket 1, a fixing plate 2 capable of horizontal rotation is installed on the upper end of the bracket 1, a roller 3 is rotatably installed on the inner side of the lower end of the bracket 1, and two ear plates 1-1 extending to one side thereof are correspondingly provided on the upper end of the bracket 1, and a brake spring piece 4 located on the lower side and a brake pedal located on the upper side are hingedly installed on the inner sides of the two ear plates 1-1, and the brake pedal is the caster brake pedal described in Example 1, and a pin 6 is fixedly provided in the mounting holes 1-1a correspondingly opened on the two ear plates 1-1, and the caster brake pedal is installed on the pin 6 through a pair of mounting holes 2B on the left plate 5-5 and the right plate 5-6, and the lower side surface of the flange plate A on the left plate 5-5 corresponds to the left side of the upper side surface of the free end of the brake spring piece 4, and the lower side surface of the flange plate A on the right plate 5-6 corresponds to the right side of the upper side surface of the free end of the brake spring piece 4.

[0041] Compared with traditional casters, the caster of the utility model effectively increases the contact area between the brake pedal and the upper side surface of the braking end of the brake spring, thereby significantly improving the stability and safety during braking and extending the service life of the brake spring.

[0042] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principle of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. A caster brake pedal, characterized in that: The pedal body (5) comprises a left side plate (5-5) extending downwardly on the left side of the pedal body (5), and a right side plate (5-6) extending downwardly on the right side, and flange plates (A) extending horizontally into the cavity between the left side plate (5-5) and the right side plate (5-6) are respectively provided at the lower edge of the left side plate (5-5) and the lower edge of the right side plate (5-6).

2. The caster brake pedal according to claim 1, characterized in that: The flange plate (A) is formed by integrally bending the lower end edge of the left side plate (5-5) or the lower end edge of the right side plate (5-6).

3. The caster brake pedal according to claim 2, characterized in that: The width of the flange plate (A) is more than twice its thickness.

4. The caster brake pedal according to claim 3, characterized in that: The pedal body (5) comprises a straight section (5-1), a curved surface section (5-2) is provided at the front end of the straight section (5-1), an inclined plate section (5-3) extending upward and rearward is provided at the rear end of the straight section (5-1), the concave curved surface side of the curved surface section (5-2) faces upward, a straight eaves body (5-4) is provided at the front end of the curved surface section (5-2), the left side plate (5-5) is located on the left side of the straight section (5-1), the curved surface section (5-2) and the straight eaves body (5-4), and the right side plate (5-6) is located on the right side of the straight section (5-1), the curved surface section (5-2) and the straight eaves body (5-4).

5. The caster brake pedal according to claim 4, characterized in that: The caster brake pedal is formed by bending the same plate body.

6. The caster brake pedal according to claim 5, characterized in that: The flange plate (A) is located at the rear side of the lower edge of the left side plate (5-5) or the rear side of the lower edge of the right side plate (5-6), the flange plate (A) is a special V-shaped structure, and the corner of the flange plate (A) is an arc-shaped transition surface structure, the lower edge of the left side plate (5-5) and the lower edge of the right side plate (5-6) are respectively provided with a notch groove (C) adjacent to the front end of the corresponding flange plate (A), and the left and right side edges of the inclined plate section (5-3) are respectively provided with a notch groove (D) adjacent to the rear end of the straight section (5-1).

7. The caster brake pedal according to claim 6, characterized in that: The upper side surface of the straight section (5-1) is provided with a plurality of anti-slip convex strips (5-1a).

8. The caster brake pedal according to claim 7, characterized in that: The rear ends of the left side plate (5-5) and the right side plate (5-6) are respectively provided with corresponding mounting holes 2 (B).

9. A caster, characterized in that: The invention comprises a caster brake pedal as claimed in any one of claims 1 to 8.

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