Trundle with brake outer tooth structure

Abstract

The utility model discloses a trundle with a brake outer tooth structure. The trundle comprises a trundle frame and a brake outer tooth structure, the rollers are rotationally arranged at the bottoms of the trundle frames through rotating shafts, and the side faces of the rollers extend outwards to be provided with a plurality of brake outer teeth; the mounting seat is assembled at the top of the trundle frame; the linkage rod is vertically arranged in the mounting seat in a penetrating manner; the brake claw is connected with the linkage rod, the bottom of the brake claw extends to form a clamping finger, and the end of the clamping finger is provided with a clamping block clamped with the brake outer teeth. The brake claw moves synchronously through lifting and lowering of the linkage rod, so that clamping connection or separation of the clamping block and the brake outer teeth is achieved, trundle braking and moving state switching and maintaining are carried out, damage to the idler wheel is small in the mode, and the long service life of the idler wheel is guaranteed. The trundle state switching operation is simple and convenient, and the state is kept stable.

Description

TECHNICAL FIELD

[0001] The utility model relates to a trundle technology field, specifically a trundle with brake external gear structure. BACKGROUND

[0002] In the trundle industry, the structures of trundles with brake function are different, and the most commonly used one is the knife-edge brake structure trundle. The brake pad of the knife-edge brake structure trundle is in abutment with the wheel surface, and the brake function is realized through the engagement with the tire pattern on the wheel surface and the friction. For the wheel with low hardness, when the brake is used, the brake pad is pressed into the wheel surface, which will scratch the wheel surface and reduce the service life of the trundle. SUMMARY

[0003] The utility model discloses a trundle with brake external gear structure to solve the problem of the knife-edge brake pad design of the common trundle, which will scratch the wheel surface and reduce the service life of the trundle when the brake is used for the wheel with low hardness.

[0004] To achieve the above object, the utility model adopts the following technical scheme: a trundle with brake external gear structure, comprising:

[0005] A trundle frame;

[0006] A roller is rotatably arranged at the bottom of the trundle frame through a rotating shaft, and a plurality of brake external gears are arranged on the lateral surface.

[0007] A mounting seat is assembled on the top of the trundle frame.

[0008] A linkage rod is vertically arranged in the mounting seat.

[0009] A brake claw is connected to the linkage rod, and a clamping finger is arranged at the bottom of the brake claw.

[0010] Further description of the above technical scheme:

[0011] The brake external gears are equidistantly arranged along the circumference of the roller.

[0012] Further description of the above technical scheme:

[0013] The linkage rod is arranged on the brake claw, and a limiting ring is arranged on the upper and lower end surfaces of the brake claw.

[0014] Further description of the above technical scheme:

[0015] The mounting seat is provided with a clamping groove corresponding to the limiting ring on the top.

[0016] As a further description of the above technical solutions:

[0017] The connecting shaft is arranged on the caster frame and penetrates the brake claw, and the linkage rod is connected to the brake claw at the side of the connecting shaft.

[0018] In summary, compared with the prior art, the utility model has the following advantages

[0019] Beneficial effects:

[0020] The linkage rod is pulled up and lowered, so that the brake claw moves synchronously, and the clamping block and the brake outer gear are clamped or separated, the caster is stopped or moved, and the switching and maintaining of the state are realized, the damage to the roller is small, and the service life is long. BRIEF DESCRIPTION OF DRAWINGS

[0021] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the following will briefly introduce the drawings needed to be used in the embodiments, and it should be understood that the following drawings only show some embodiments of the utility model, and should not be regarded as limiting the scope, and for those skilled in the art, other related drawings can be obtained without creative labor.

[0022] Figure 1 It is a structure diagram of a caster with brake outer gear structure Figure One .

[0023] Figure 2 It is a structure diagram of a caster with brake outer gear structure Figure Two .

[0024] LEGEND:

[0025] 1, caster frame; 11, connecting shaft; 2, roller; 3, brake outer gear; 4, mounting seat; 5, linkage rod; 51, limiting ring; 6, brake claw; 61, clamping finger; 62, clamping block. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the utility model will be described clearly and completely in combination with the drawings in the embodiments of the utility model, and obviously, the described embodiments are only some of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the scope of protection of the utility model.

[0027] In the description of the utility model, need understanding is, the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inner", "outer" and so on indicate the orientation or position relation is based on the orientation or position relation shown in the drawing, just is for the convenience of describing the utility model and simplifying the description, and it is not indicated or implied that the indicated device or element must have a particular orientation, is constructed and operated with a particular orientation, therefore it cannot be understood as the limitation to the utility model.

[0028] Please refer to Figures 1-2 The utility model provides a technical scheme: a caster with brake outer gear structure, which comprises:

[0029] Caster frame 1;

[0030] Roller 2 is rotationally arranged at the bottom of the caster frame 1 through a rotating shaft, and a plurality of brake outer gears 3 are arranged outward on the side surface;

[0031] Mounting seat 4 is assembled on the top of the caster frame 1;

[0032] Linkage rod 5 is vertically arranged in the mounting seat 4;

[0033] Brake pawl 6 is connected with the linkage rod 5, and a clamping finger 61 is arranged at the bottom of the brake pawl 6; the end of the clamping finger 61 is provided with a clamping block 62 which is connected with the brake outer gear 3.

[0034] The brake outer gears 3 are arranged at equal intervals along the circumference of the roller 2, so that the roller 2 can be quickly stopped by the cooperation of the brake outer gears 3 and the clamping block 62 at different rotating positions.

[0035] The linkage rod 5 is arranged on the brake pawl 6, and a limiting ring 51 is arranged on the upper and lower end surfaces of the brake pawl 6, so that the linkage rod 5 can be pulled up to make the brake pawl 6 move synchronously, and the brake outer gears 3 and the clamping block 62 can be connected, the caster can be stopped or separated, and the movable state of the caster can be conveniently switched.

[0036] The mounting seat 4 is provided with a clamping groove corresponding to the limiting ring 51 on the top.

[0037] A connecting shaft 11 is arranged on the caster frame 1, the connecting shaft 11 is arranged on the brake pawl 6, and the connection between the linkage rod 5 and the brake pawl 6 is located on the side surface of the connecting shaft 11. Figure 2 In this embodiment, the linkage rod 5 is pulled up to make the brake pawl 6 rotate along the connecting shaft 11, the clamping block 62 is connected to the brake outer gear 3, the limiting ring 51 on the top is connected to the mounting seat 4, or the linkage rod 5 is pulled up or put down through an external mechanism, and the structure of the external mechanism is locked to realize the structural positioning of the linkage rod 5 and the brake pawl 6, so that the stable switching and maintenance of the two states of the caster can be ensured.

[0038] In summary, due to the adoption of the above technical scheme, the caster with brake outer gear structure has the following beneficial effects compared with the prior art:

[0039] The utility model discloses a linkage rod is lifted, is put down, makes brake claw synchronous activity, further realizes the clamping of the card block and brake outer gear or the separation, carries out the switching and maintenance of caster brake stop, movable state, and this mode is less to the damage of the gyro wheel, guarantees its longer service life. The caster state switching operation is simple and convenient, and the state is stable.

[0040] The above is only the preferred specific embodiment of the utility model, but the protection scope of the utility model is not limited to this, any skilled person in the art in the technical range disclosed by the utility model, according to the technical scheme and utility model concept of the utility model, equivalent replacement or change are covered in the protection scope of the utility model.

Claims

1. A caster with a brake external gear structure, characterized in that, include: Caster car; The rollers are rotatably mounted at the bottom of the caster frame via a pivot, and have several brake teeth extending outwards from the sides. Mounting base, which is fitted onto the top of the caster frame; A linkage rod, which is vertically inserted into the mounting base; A brake pawl, which is connected to the linkage rod, has a clamping finger extending from its bottom, and the end of the clamping finger is provided with a locking block that engages with the external brake teeth; The linkage rod passes through the brake pawl, and the linkage rod is provided with limit rings on the upper and lower end faces of the brake pawl; The mounting base is provided with a slot corresponding to the top limiting ring.

2. A caster with a brake external gear structure according to claim 1, characterized in that, The brake teeth are evenly spaced along the circumference of the roller.

3. A caster with a brake external gear structure according to claim 1, characterized in that, A connecting shaft is provided on the caster bracket, the connecting shaft passes through the brake pawl, and the connection point between the linkage rod and the brake pawl is located on the side of the connecting shaft.

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