CN201002227Y - Braking structure of ratchet wrench - Google Patents

Abstract

A brake structure of a ratchet wrench, comprising: the wrench comprises a wrench body, a brake wheel, a plurality of ratchet blocks, a plurality of elastic assemblies, a C-shaped fixing buckle and a fixing ring cover, wherein the wrench body is provided with an accommodating groove, ratchets are distributed on the periphery of the accommodating groove, a limiting groove which is cut outwards is formed in the groove bottom and the groove top of the accommodating groove, a clamping groove is concavely arranged in the limiting groove at the groove top, a tool groove of a clamping tool head is arranged inside the brake wheel in a penetrating manner, a plurality of brake grooves which extend in an arc shape gradually and gradually are uniformly concavely arranged on the peripheral circle, the smallest inclined surface of each brake groove is a clamping surface, a supporting part is convexly arranged on the peripheral ring at the bottom edge of the brake wheel, the clamping surface is arranged on the outer side of each ratchet block and matched with the clamping surface of each brake groove, ratchets are arranged on the outer side, and the clamping groove is concavely arranged in the peripheral edge; the structure combination has the advantages of smoother use action, more convenient use and better usability.

Description

Braking structure of ratchet wrench

technical field

The utility model relates to a "braking structure of a ratchet wrench" that can be used in fast, convenient and labor-saving ways to lock or open screw tools, especially refers to the improved design of the brake assembly, so that the structure can be easily controlled. Power is more stable.

Background technique

The current structure of the ratchet wrench, as shown in Figures 6 and 7, is provided with an accommodating chamber 11 in a wrench body 10, and a ratchet 12 is supported by the accommodating chamber 11, and the accommodating chamber One side of 11 is directly recessed with a structural groove 13, and one side of the structural groove 13 is biased to accommodate a shift block 14 and a spring 15 that pushes it out obliquely. Ratchet 121141 is provided on the contact edge between the edge and the shifting block 14. In this oblique manner, after the wrench body 10 is accommodated in the accommodating groove chamber 11 for the ratchet 12, the tool groove provided in the center of the ratchet 12 can be used. 122 clamps the tool head and produces rotation, and both sides of the tool slot 122 can be used for the clamping tool head. The different directions have different positive and negative clamping directions for selecting the opening or locking action.

Yet this kind, the ratcheting principle of locking or idling, is that the shifting block 14 is accommodated in a way of biasing to one side in the structural groove 13, and the shifting block 14 is pushed out in an oblique manner by the spring 15. This way works as the ratchet 12. When the force is turned, the single point of the force is output obliquely outward, and the force is not uniform, which will cause the ratchet 12 to tilt and warp, making the turning process not smooth, lacking flexibility, and poor usability. The warped angle will cause excessive wear, and even the ratchet 121141 will collapse after long-term use.

In the known ratchet wrench structure, the locking or idling is to use the structural groove to accommodate the shifting block in a way that is biased to one side, and the shifting block is pushed out obliquely by the spring. The single-point and outward oblique force output mode, the force output can not be uniform, will cause the ratchet to tilt and warp, make the turning process not smooth, and the usability is not good. This is the technical problem to be solved.

Utility model content

The purpose of the utility model is to provide a braking structure of a ratchet wrench to overcome the defects in the known technology.

In order to achieve the above object, the braking structure of the ratchet wrench provided by the utility model is composed of: a wrench body, a brake wheel, several ratchet blocks, several elastic components, a C-shaped fixed buckle and a fixed ring cover ,in:

The wrench body has an accommodating groove on it, ratchet teeth are arranged around the accommodating groove, the groove bottom and the groove top of the accommodating groove have a limit groove cut out outward, and the limit groove on the groove top is recessed There are knotting grooves;

The brake wheel has a tool groove for clamping the tool head through its interior, and several brake grooves extending from small to large arcs are equally recessed on the outer circumference. The position of the smallest slope of the brake groove is the clamping surface. The direction of the clamping surface of the moving groove is set to follow the same rotation direction, while the other side of the brake groove has a fixed groove, and the outer peripheral ring of the bottom edge of the brake wheel protrudes with a supporting part;

The ratchet block, the outer side of which is provided with a locking surface to match the locking surface of the brake groove, the outer side is provided with ratchet teeth, and the opposite end of the locking surface of the ratchet block has a fixed groove;

The fixed ring cover is provided with a locking groove in the center of the outer periphery;

According to the above structure, the brake wheel is placed under the accommodation groove of the wrench body, the support part cooperates with the limit groove at the bottom of the accommodation groove, and the ratchet and elastic components are sequentially accommodated in each brake groove of the brake wheel Among them, the two sides of the elastic component are respectively accommodated in the fixed groove limit, the elastic component pushes the ratchet block outward, the locking surface of the ratchet block matches the locking surface of the brake wheel, and the ratchet teeth of the ratchet block can The ratchet of the wrench body fits, the fixed ring cover is set at the limit groove on the top of the accommodating groove of the wrench body, and the C-shaped fixed buckle is buckled between the fixed ring cover and the locking groove of the wrench body, and the fixed ring cover The support above the brake wheel is provided at the hollow ring.

Compared with the known technology, the utility model has the following effects:

In the brake structure of the ratchet wrench provided by the utility model, the ratchet block controls the brake wheel, and the brake groove is uniformly recessed on the periphery of the brake wheel, and ratchets are arranged on the periphery of the matching accommodation groove, and the brake groove The accommodated ratchet and elastic components can evenly distribute the force points on more than three points, making the action of the brake wheel smoother, making the turning process smoother and more flexible, with better usability and stronger structural strength. good.

Description of drawings

Fig. 1: the three-dimensional assembly diagram of the utility model.

Fig. 2: Three-dimensional exploded view of the utility model.

Fig. 3: A combined side view sectional view of the utility model.

Fig. 4: The combined plane structure diagram of the utility model and the schematic diagram of the pulling state.

Figure 5: Schematic diagram of the reverse idling state of the utility model.

Figure 6: A known three-dimensional exploded view.

Fig. 7: Known combined plane structure diagram.

Detailed ways

In order to have a further understanding and understanding of the purpose, features and effects of the present utility model, the following details are as follows in conjunction with the accompanying drawings:

First of all, as shown in Figures 1 and 2, it consists of: a wrench body 20, a brake wheel 30, a number of ratchet blocks 40, a number of elastic components 50, a C-shaped fixing buckle 60 and a fixing ring cover 70 , wherein, the wrench body 20 has an accommodating groove 21, and the periphery of the accommodating groove 21 is provided with a ratchet 22, and the groove bottom and the groove top of the accommodating groove 21 have a limit groove 2324 cut outward, and the The limiting groove 24 is also recessed with a locking groove 25, the inside of the brake wheel 30 is provided with a tool groove 31 for locking the tool head, and the outer circumference is evenly recessed with several braking grooves extending from small to large arcs. 32. The position of the smallest slope of the brake groove 32 is the clamping surface 33, and the direction of the clamping surface 33 of each brake groove 32 is set to follow the same rotation direction, while the other side of the brake groove 32 has a fixed groove 321, and the other braking The outer peripheral ring of the bottom edge of the wheel 30 protrudes with a support portion 34, and the ratchet block 40 is in the shape of a cut arc, which is triangular in shape. The tooth 42 and the opposite end of the locking surface 41 of the ratchet block 40 have a fixing groove 43 , and the outer peripheral edge of the fixing ring cover 70 is concavely provided with a locking groove 71 .

The combination of its structure is shown in Fig. 3 with Fig. 4. The brake wheel 30 is placed under the accommodating groove 21 of the wrench body 20, and the supporting part 34 is connected with the limiting groove 23 at the bottom of the accommodating groove 21. Cooperate with the circumferential limit and the lower support, and the ratchet block 40 and the elastic assembly 50 are a ratchet block 40 matched with an elastic assembly 50, which is accommodated in the brake groove 32 of the brake wheel 30, and the elastic assembly 50 is able to move the ratchet block The engagement surface 41 of 40 is pushed to the engagement surface 33 of the brake groove 32 to cooperate, and the ratchet 42 of the ratchet block 40 can be pushed to the ratchet 22 of the wrench body 20 to fit. The two sides of the elastic component 50 are respectively accommodated The fixing groove 32143 is used to limit the position, and the fixing ring cover 70 is set on the accommodating groove 21 of the wrench body 20 at the top limit groove 24, and is fixed between the locking grooves 2571 of the two by using the C-shaped fixing buckle 60 , so that the fixed ring cover 70 is fixed, and at the same time, the inner hollow ring of the fixed ring cover 70 and the top of the brake wheel 30 cooperate with the circumferential limit and the upper support, so that the brake wheel 30 is clamped to the accommodating groove of the wrench body 20 21, can only be used to rotate without falling out.

The rotation of its use is shown in Fig. 4 and Fig. 5. After the wrench body 20 accommodates the brake wheel 30 in the accommodating groove 21, the tool groove 31 of the brake wheel 30 can be used to clamp the tool head, and Rotation occurs, and both sides of the tool groove 31 can be used for clamping the tool head. The different directions have different positive and negative clamping rotations for selecting the opening or locking action. As shown in the figure, when When the rotation direction of the brake wheel 30 is reversed, the ratchet block 40 turns in the same direction as the pushed out direction (opposite direction to the brake wheel 30), so the ratchet block 40 will block the wrench tangentially with the locking surface 41 and the ratchet 42 The ratchet 22 around the body 20 and the clamping surface 33 of the brake wheel 30 make the brake wheel 30 rotate together with the wrench body 20 , otherwise when the brake wheel 30 rotates forward, the wrench body 20 accommodates the groove 21 The surrounding ratchets 22 will push the ratchet 40 towards the direction of the elastic assembly 50, so that the ratchet 40 will shrink inward and the locking surface 41 will be separated from the locking surface 33 of the brake wheel 30. When the brake wheel 30 and the wrench body 20 When the locking force is lost, and the brake wheel 30 has a certain interference force, the idling phenomenon will occur, and only the ratchet 2242 between the wrench body 20 and the ratchet block 40 bounces and rubs.

By the structure of the above specific embodiment, the following benefits can be obtained: the ratchet block 40 controls the brake wheel 30, and the brake groove 32 is equally recessed on the periphery of the brake wheel 30, and the periphery of the matching accommodating groove 21 is arranged with The ratchet 22, and the ratchet 40 and the elastic component 50 housed in the brake groove 32 can evenly distribute the force points to more than three points, so that the movement of the brake wheel 30 is smoother, and the turning process is smoother. , flexible, better usability, and better structural strength.

The above is only a preferred embodiment of the present utility model, and should not limit the scope of the present utility model implementation; within the scope covered by the utility model claims.

Claims (1)

1. A brake structure of a ratchet wrench, which is composed of a wrench body, a brake wheel, several ratchet blocks, several elastic components, a C-shaped fixed buckle and a fixed ring cover, characterized in that: The wrench body has an accommodating groove on it, ratchet teeth are arranged on the periphery of the accommodating groove. There are knotting grooves; The brake wheel has a tool groove for clamping the tool head through its interior, and several brake grooves extending from small to large arcs are equally recessed on the outer circumference. The position of the smallest slope of the brake groove is the clamping surface. The direction of the clamping surface of the moving groove is set to follow the same rotation direction, while the other side of the brake groove has a fixed groove, and the outer peripheral ring of the bottom edge of the brake wheel protrudes with a supporting part; The ratchet block, the outer side of which is provided with a locking surface to match the locking surface of the brake groove, the outer side is provided with ratchet teeth, and the opposite end of the locking surface of the ratchet block has a fixed groove; The fixed ring cover is provided with a locking groove in the center of the outer periphery; According to the above structure, the brake wheel is placed under the accommodation groove of the wrench body, the support part cooperates with the limit groove at the bottom of the accommodation groove, and the ratchet and elastic components are sequentially accommodated in each brake groove of the brake wheel Among them, the two sides of the elastic component are respectively accommodated in the fixed groove limit, the elastic component pushes the ratchet block outward, the locking surface of the ratchet block matches the locking surface of the brake wheel, and the ratchet teeth of the ratchet block can The ratchets of the wrench body fit together. The fixed ring cover is set at the limit groove on the top of the accommodating groove of the wrench body. The support above the brake wheel is provided at the hollow ring.

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