Static double-brake locking mechanism for caster

Abstract

The utility model provides a caster static double braking mechanism which comprises a connecting seat body and a double braking mechanism body movably connected to the connecting seat body, and the double braking mechanism body comprises a caster support, a bevel gear, a braking block, a Z-shaped operating rod and a rubber wheel. The bevel gear is arranged in the trundle support and makes contact with the braking block. The braking blocks are movably connected into the trundle supports, the tops of the braking blocks make contact with the bevel gears, the bottoms of the braking blocks make contact with the rubber wheels, flat shafts and handles are arranged on the Z-shaped operating rods, and the flat shafts support the braking blocks to expand up and down to make contact with the bevel gears and the rubber wheels by operating the handles. Therefore, the double-braking effect of the caster is achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a technology field of caster, specifically a kind of for caster static double brake mechanism. BACKGROUND

[0002] Caster is widely used in trolley, mobile scaffold and workshop truck etc., but for the caster in current market, most of its brake part adopts rear brake and side single brake mechanism, wherein, the rear brake is characterized by the tail of its support material extending, pedal plate pressing spring sheet, brake is completed by stepping down pedal plate when brake is needed, and workshop truck cannot move forward and backward after brake, and brake releasing action is completed by lifting brake plate with foot surface when brake releasing is needed.The side single brake is characterized by brake and brake releasing being completed by stepping down brake plate downward, and its feature is that workshop truck cannot move forward and backward after brake, but still can move left and right, and the rear brake of the above two ways has the following shortcomings: firstly, since its wheel is installed below workshop truck, and pedal plate is close to the position of workshop truck bottom surface, large company generally connects multiple workshop trucks, and through tractor towing workshop truck, it carries goods and sends materials in each workshop, since the space left for stepping by multiple workshop trucks is too narrow, it is difficult to step down brake when brake is needed, and it is impossible to operate, secondly, since its brake releasing mode is unreasonable, brake releasing needs to hang pedal plate with foot surface and lift upward, and shoe surface is usually cut, so it is inconvenient to use and has safety hazard.The side single brake solves the shortcomings of rear brake, but side single brake can only brake wheel, and workshop truck still has left and right movement possibility, so it cannot guarantee safety in production and use. CONTENT OF UTILITY MODEL

[0003] In view of the problems of existing caster, the utility model provides a kind of for caster static double brake mechanism to solve the problems in background art.

[0004] To achieve the above object, the utility model provides the following technical scheme:

[0005] The utility model provides a kind of for caster static double brake mechanism, the kind of for caster static double brake mechanism includes connecting seat body and double brake mechanism movably connected on connecting seat body, and the double brake mechanism includes caster support, umbrella-shaped gear, brake block, Z-shaped operating rod and rubber wheel;

[0006] The umbrella-shaped gear is arranged in caster support, the umbrella-shaped gear top is movably connected with connecting seat body by rivet through caster support, and the umbrella-shaped gear bottom end is provided with tooth downward extension protruding in caster support and being in contact with brake block;

[0007] The brake block is provided with convex and concave edges, a brake shoe, a main nail hole, and a concave cavity. The convex and concave edges are in contact with the teeth, the brake shoe is in contact with the rubber wheel, and the main screw passes through the main nail hole to movably connect the brake block to the bottom of the bevel gear.

[0008] The Z-shaped operating rod is provided with a flat shaft and a handle. The flat shaft is arranged in the concave cavity and contacts the convex and concave edges and the inner wall of the brake pad. The handle protrudes from the side of the caster bracket. The flat shaft supports the convex and concave edges and the brake pad to expand up and down by operating the handle. The expanded convex and concave edges are engaged with the teeth, and the expanded brake pad contacts the rubber wheel.

[0009] As a preferred technical solution of the present invention, the brake block has its own elastic force capable of expanding and contracting outwards.

[0010] As an optimal technical solution of the present invention, a secondary nail hole is provided at the bottom of the caster bracket, and the rubber wheel is movably connected to the bottom of the caster bracket through a secondary screw, and the surface of the rubber wheel is in contact with the brake pad and the ground.

[0011] The beneficial effects of the utility model are:

[0012] 1. The utility model utilizes a flat shaft provided on a Z-shaped operating lever that passes through a concave cavity, and the handle of the Z-shaped operating lever protrudes from the side of the caster bracket. The operating handle causes the convex and concave edges provided on the brake block to engage with the teeth provided at the bottom of the bevel gear, thereby locking the caster and effectively preventing the workshop truck from swinging left and right.

[0013] 2. The operating handle and the brake pad are in contact with the surface of the rubber wheel at the same time, so that the rubber wheel cannot move forward and backward, thereby achieving a double braking effect on the workshop truck caster. The utility model has the effects of easy use and high positioning safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of a caster in a double braking structure for a caster stationary double braking mechanism according to a preferred embodiment of the present invention;

[0015] Figure 2 This is a schematic diagram of a caster without a brake structure for a caster static dual brake mechanism according to a preferred embodiment of the present invention;

[0016] Figure 3 This is a schematic diagram of the other side of the three-dimensional structure of a dual braking mechanism for a stationary dual braking mechanism for a caster in a preferred embodiment of the present utility model;

[0017] Figure 4 This is a schematic diagram of the structure of a bevel gear for a stationary double braking mechanism for casters in a preferred embodiment of the present utility model;

[0018] Figure 5 This is a schematic diagram of the structure of a brake block for a stationary double brake mechanism for casters in a preferred embodiment of the present utility model;

[0019] Figure 6 The utility model is a schematic diagram of a Z-shaped operating lever structure for a stationary double braking mechanism of a caster in a preferred embodiment.

[0020] In the figure, 21, connecting base; 22, double braking mechanism; 35, caster bracket; 36, bevel gear; 37, brake block; 38, Z-shaped operating lever; 39, rubber wheel; 15, teeth; 16, convex and concave edges; 17, brake pad; 18, main nail hole; 19, concave cavity; 26, flat shaft; 27, handle; 28, auxiliary nail hole; 29, auxiliary screw. DETAILED DESCRIPTION

[0021] The drawings are for illustrative purposes only and should not be construed as limiting this patent. To better illustrate the embodiments, some components in the drawings may be omitted, enlarged, or reduced in size, and do not represent actual product dimensions. Those skilled in the art will understand that some well-known structures and their descriptions may be omitted from the drawings. The positional relationships depicted in the drawings are for illustrative purposes only and should not be construed as limiting this patent.

[0022] The same or similar numbers in the drawings of the embodiments of the present invention correspond to the same or similar parts; in the description of the present invention, it should be understood that if there are terms such as "wide", "narrow", "up", "down", "left", "right", "long", "short", "top", "bottom", etc. indicating orientations or positional relationships, they are based on the orientations or positional relationships shown in the drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, be constructed and operate in a specific orientation. Therefore, the terms describing the positional relationships in the drawings are only used for illustrative purposes and cannot be understood as limitations on this patent. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0023] The terms "by", "including", "comprising", "having", "containing", "provided with", "and", etc. used in this document are open terms and have no technical connection with this patent.

[0024] It should be noted that, unless there is a conflict, the features of the embodiments and implementations of this application can be combined with each other. The technical solution of the present utility model will be further described in detail below through specific embodiments and in conjunction with the accompanying drawings.

[0025] See also Figures 1-6As shown, a stationary dual braking mechanism for casters includes a connecting base 21 and a dual braking mechanism 22 movably connected to the connecting base 21. The dual braking mechanism 22 includes a caster bracket 35, a bevel gear 36, a braking block 37, a Z-shaped operating lever 38, and a rubber wheel 39.

[0026] The bevel gear 36 is disposed in the caster bracket 35. The top of the bevel gear 36 is movably connected to the connecting base 21 by rivets passing through the caster bracket 35. The bottom end of the bevel gear 36 is provided with teeth 15 that extend downwardly into the caster bracket 35 and contact the brake block 37.

[0027] The brake block 37 is provided with a convex and concave edge 16, a brake shoe 17, a main nail hole 18, and a concave cavity 19. The convex and concave edge 16 contacts the teeth 15, and the brake shoe 17 contacts the rubber wheel 39. The main screw 25 passes through the main nail hole 18 to flexibly connect the brake block 37 to the bottom of the bevel gear 36.

[0028] The Z-shaped operating rod 38 is provided with a flat shaft 26 and a handle 27. The flat shaft 36 is arranged in the concave cavity 19 and contacts the inner walls of the convex and concave edges 16 and the brake pad 17. The handle 27 protrudes from the side of the caster bracket 35. By operating the handle 27, the flat shaft 26 supports the convex and concave edges 16 and the brake pad 17 to expand up and down. The expanded convex and concave edges 16 and the teeth 15 are interlocked with each other, and the expanded brake pad 17 is in contact with the rubber wheel 39.

[0029] Preferably, the brake block 37 has its own elastic force capable of expanding and contracting outwards.

[0030] Preferably, a secondary nail hole 28 is provided at the bottom of the caster bracket 35, and a rubber wheel 39 is movably connected to the bottom of the caster bracket 35 through a secondary screw 29, and the surface of the rubber wheel 39 is in contact with the brake pad 17 and the ground.

[0031] Preferably, when the utility model is used to brake, Figure 1 As shown, first, the handle 27 is operated to expand the convex and concave edges 16 of the wide flat shaft 26 upward, so that the convex and concave edges 16 and the teeth 15 are locked with each other, effectively preventing the workshop truck from swinging left and right. When the handle 27 is operated to expand the brake shoe 17 of the wide flat shaft 26 downward, the brake shoe 17 contacts the rubber wheel 39 to stop the workshop truck from moving forward or backward, thereby achieving the effect of double braking the workshop truck; when it is no longer necessary to brake the workshop truck, the handle 27 is operated to retract the narrow flat shaft 26 into the concave cavity 19. Due to the elastic force of the brake block 37, the convex and concave edges 16 and the brake shoe 17 are also retracted, and the convex and concave edges 16 are separated from the teeth 15, and the brake shoe 17 is separated from the rubber wheel 39. Figure 2As shown, at this time, the caster is not controlled and the workshop truck is in a running state, and the workshop truck needs to be braked again and the operation is repeated.

[0032] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various changes and variations. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A dual braking mechanism for casters, characterized in that: The dual braking mechanism for a caster comprises a connecting base (21) and a dual braking mechanism (22) movably connected to the connecting base (21), wherein the dual braking mechanism (22) comprises a caster bracket (35), a bevel gear (36), a braking block (37), a Z-shaped operating lever (38), and a rubber wheel (39); The bevel gear (36) is arranged in the caster bracket (35), the top of the bevel gear (36) is movably connected to the connecting seat (21) through a rivet passing through the caster bracket (35), and the bottom end of the bevel gear (36) is provided with teeth (15) extending downward and protruding in the caster bracket (35) to contact the brake block (37); The brake block (37) is provided with a convex and concave edge (16), a brake shoe (17), a main nail hole (18), and a concave cavity (19); the convex and concave edge (16) contacts the teeth (15); the brake shoe (17) contacts the rubber wheel (39); the main screw (25) passes through the main nail hole (18) to movably connect the brake block (37) to the bottom of the bevel gear (36); The Z-shaped operating rod (38) is provided with a flat shaft (26) and a handle (27). The flat shaft (26) is arranged in the concave cavity (19) and contacts the inner wall of the convex and concave edge (16) and the brake shoe (17). The handle (27) protrudes from the side of the caster bracket (35). By operating the handle (27), the flat shaft (26) supports the convex and concave edge (16) and the brake shoe (17) to expand up and down. The expanded convex and concave edge (16) and the teeth (15) are mutually locked, and the expanded brake shoe (17) contacts the rubber wheel (39).

2. A stationary dual braking mechanism for casters according to claim 1, characterized in that: The brake block (37) has its own elastic force capable of expanding and contracting outwards.

3. A stationary dual braking mechanism for casters according to claim 1, characterized in that: The bottom of the caster bracket (35) is provided with a secondary nail hole (28), and the rubber wheel (39) is movably connected to the bottom of the caster bracket (35) through a secondary screw (29), and the surface of the rubber wheel (39) is in contact with the brake pad (17) and the ground.

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