CN201702724U

CN201702724U - Ratchet screwdriver

Info

Publication number: CN201702724U
Application number: CN2010202097526U
Authority: CN
Inventors: 钱贤平
Original assignee: NINGBO DECHENG TOOLS CO Ltd
Current assignee: NINGBO DECHENG TOOLS CO Ltd
Priority date: 2010-05-28
Filing date: 2010-05-28
Publication date: 2011-01-12
Anticipated expiration: 2020-05-28

Abstract

The utility model discloses a ratchet screwdriver. The ratchet screwdriver comprises a screwdriver body (1), a ratchet groove (2) and a ratchet component, wherein the ratchet groove (2) is arranged on the head part of the screwdriver body (1); and the ratchet component is arranged in the ratchet groove (2) and is an external ratchet component. The ratchet screwdriver has the advantages of compact structure, low assembly difficulty and high accuracy.

Description

Ratchet revolves tool

Technical field

The utility model relates to a kind of hand-operated tools, specifically is that a kind of ratchet revolves tool.

Background technology

The ratchet of prior art revolves tool by revolving the tool body, be located at the ratchet slot that revolves tool body head and be located at ratchet assembly in the ratchet slot; Described ratchet assembly is made up of ratchet, ratchet, square tenon, shifting block and two shell fragments; Described side's tenon is installed in the position, the center of circle of ratchet; Described ratchet assembly belongs to built-in ratchet assembly, and described ratchet, square tenon, shifting block and two shell fragments all are located at the inside of ratchet.The ratchet of said structure revolves tool and has following defective: because ratchet assembly belongs to built-in ratchet assembly, so ratchet, two shell fragments all are located between ratchet and the square tenon, and need limit the rotation direction of ratchet to realize its function by shifting block.Because ratchet and shell fragment are between ratchet and square tenon, therefore make that not only assembly difficulty is bigger, and because this built-in ratchet assembly assembly difficulty is big, therefore reduce its assembly precision for assembling speed, thereby the gap of feasible each parts that assemble up is bigger, loosely organized, and then the gap between each parts increases after causing ratchet to revolve that tool is long-term using, cause click stuck and can't use.

The utility model content

The technical problems to be solved in the utility model is, overcomes the defective of above prior art, provides a kind of compact conformation, assembly difficulty is low and precision is high ratchet to revolve tool.

The technical solution of the utility model is, provides a kind of ratchet to revolve tool, comprises revolving the tool body, be located at the ratchet slot that revolves tool body head and be located at ratchet assembly in the ratchet slot, and described ratchet assembly is the external ratchet assembly.

Described external ratchet assembly comprises ratchet, ratchet and two shell fragments, and the outer tool body that revolves of described ratchet slot is provided with an opening, and described ratchet, two shell fragments all are located at opening part; Described ratchet be shaped as semicircle; The middle part of described ratchet the revolving on the tool body that be rotatably assorted at opening part; The two ends of tangent plane are respectively equipped with the ratchet that matches with ratchet in the described ratchet; The described head that revolves the tool body is provided with and revolves the top cover that the tool body is rotatably assorted, and the inwall of described top cover is provided with two projectioies; Described two shell fragments are the U-shaped shell fragment; The closing end of every shell fragment is against respectively between the two ends and top cover of described ratchet extrados, and the openend of every shell fragment is against respectively on the outer surface of described two projectioies and ratchet; Distance between described two corresponding arc length of projection is greater than the distance between the corresponding arc length of two shell fragment closing ends.

After adopting above structure, the utility model compared with prior art has the following advantages:

Ratchet assembly of the present utility model belongs to the ratchet assembly of external, ratchet, two shell fragments all are located between the inner surface of ratchet periphery and ratchet slot, because ratchet assembly is positioned at the ratchet outside, reduce with respect to its assembly difficulty of built-in structure, therefore assemble up fairly simple convenience.In addition, because the ratchet assembly assembly difficulty of this external is lower, therefore both can guarantee its assembly precision, can guarantee its assembling speed again, therefore the gap of feasible each parts that assemble up is less, structure is very compact, has also avoided ratchet to revolve long-term the use afterwards of tool simultaneously and has taken place owing to the gap between each parts becomes the stuck situation of click that causes greatly.

Description of drawings

Fig. 1 is the front broken section structural representation that the utility model ratchet revolves tool.

Fig. 2 is the A-A cutaway view of Fig. 1.

Shown in the figure 1, revolve the tool body, 2, ratchet slot, 3, top cover, 3.1, projection, 4, ratchet, 5, ratchet, 5.1, ratchet, 5.2, through hole, 6, shell fragment, 7, axle, 8, opening, 9, square tenon, 10, spring, 11, spherical limited block.

The specific embodiment

The utility model is described in further detail below in conjunction with the drawings and specific embodiments.

As shown in Figure 1 and Figure 2, a kind of ratchet of the utility model revolves tool, comprises revolving tool body 1, square tenon 9, be located at the ratchet slot 2 that revolves tool body 1 head and be located at ratchet assembly in the ratchet slot 2, and described ratchet assembly is the external ratchet assembly.

Ratchet 4 is rotatably assorted in ratchet slot 2, and it belongs to prior art, is not just describing in detail at this.

Described side's tenon 9 is installed in the position, the center of circle of ratchet 4, also have one between described side's tenon 9 and the top cover 3 by spring 10 and spherical limited block 11, in the groove of described spring 10 side's of being located at tenons 9, the one end is against bottom portion of groove, its other end offsets with top cover 3 inwalls through spherical limited block 11, thereby reaches spacing effect.This kind structure is a prior art, therefore just not at this detailed description.

The concrete structure of described external ratchet assembly is: described ratchet assembly comprises ratchet 4, ratchet 5 and two shell fragments 6, and the described ratchet slot 2 outer tool bodies 1 that revolve are provided with an opening 8, and described ratchet 5, two shell fragments 6 are installed in opening 8 places.

Described ratchet 5 be shaped as crescent; The middle part of described ratchet 5 is rotatably assorted and revolves on the tool body 1 at opening 8 places, and the middle part of promptly described ratchet 5 is provided with a through hole 5.2, described revolve tool body 1 be provided with one pass this through hole 5.2 the axle 7, described ratchet 5 is rotatably assorted on axle 7.

The two ends of described ratchet 5 intrados are respectively equipped with the ratchet 5.1 that matches with ratchet 4; The described head that revolves tool body 1 is provided with and revolves the top cover 3 that tool body 1 is rotatably assorted, and the inwall of described top cover 3 is provided with two projectioies 3.1; Described two shell fragments 6 are U-shaped shell fragment 6; The closing end of every shell fragment 6 is against respectively between the two ends and top cover 3 of described ratchet 5 extrados, and promptly wherein a shell fragment 6 is against between the end and top cover 3 of ratchet 5 extrados; Another one shell fragment 6 is against between the other end and top cover 3 of ratchet 5 extrados.

The openend of every shell fragment 6 is against respectively on the outer surface of described two projectioies 3.1 and ratchet 4, and promptly wherein the interior sheet lamellar body of a shell fragment 6 is against outer surface with ratchet 4, and its outer plate lamellar body is against wherein on the projection 3.1; The interior sheet lamellar body of a slice 6 is against the outer surface with ratchet 4 in addition, and its outer plate lamellar body is against on the other projection 3.1.

Distance between described two projectioies, the 3.1 corresponding arc length can guarantee projection 3.1 when withstanding the closing end of a shell fragment 6 like this greater than the distance between the corresponding arc length of two shell fragment 6 closing ends, and an other projection 3.1 can not be against the closing end of an other shell fragment 6.

Operation principle of the present utility model is: during use, rotate earlier top cover 3, a projection 3.1 is offseted with corresponding its shell fragment 6, can revolve tool a direction use; Use when revolving tool when needs change direction, only need rightabout to rotate top cover 3, an other projection 3.1 corresponding shell fragments 6 with it are offseted get final product.

Claims

1. a ratchet revolves tool, comprises revolving tool body (1), be located at the ratchet slot (2) that revolves tool body (1) head and be located at the interior ratchet assembly of ratchet slot (2), and it is characterized in that: described ratchet assembly is the external ratchet assembly.

2. ratchet according to claim 1 revolves tool, it is characterized in that: described external ratchet assembly comprises ratchet (4), ratchet (5) and two shell fragments (6), the outer tool body (1) that revolves of described ratchet slot (2) is provided with an opening (8), and described ratchet (5), two shell fragments (6) all are located at opening (8) and locate; Described ratchet (5) be shaped as semicircle; The middle part of described ratchet (5) is rotatably assorted revolving on the tool body (1) that opening (8) is located; The two ends of the interior tangent plane of described ratchet (5) are respectively equipped with the ratchet (5.1) that matches with ratchet (4); The described head that revolves tool body (1) is provided with and revolves the top cover (3) that tool body (1) is rotatably assorted, and the inwall of described top cover (3) is provided with two projectioies (3.1); Described two shell fragments (6) are U-shaped shell fragment (6); The closing end of every shell fragment (6) is against respectively between the two ends and top cover (3) of described ratchet (5) extrados, and the openend of every shell fragment (6) is against respectively on the outer surface of projection (3.1) and ratchet (4); Distance between the corresponding arc length of described two projectioies (3.1) is greater than the distance between the corresponding arc length of two shell fragments (6) closing end.