TWI689382B - Ratchet modified structure - Google Patents

Abstract

A ratchet modified structure includes a body, the body is provided with a plurality of ratchets protruded along the axial direction and equidistantly along the periphery, and defined with an annular groove, the annular groove divides the body into a head portion and a body portion, the ratchets are located at the body portion, between each ratchet and the annular groove is defined a pre-degree groove, such that when milling a recess between the two ratchets along the axial direction, the cutter can actually remove the scrap through the pre-degree groove, thus achieving the effect of preventing the residue of the scrap.

Description

Ratchet improved structure

The invention relates to the technical field of hand tools, in particular to an improved ratchet structure.

Please refer to FIG. 1, a ratchet wrench is installed in the head of a conventional ratchet wrench. During the forming process, the ratchet wheel needs to undergo a pre-forming step to roughly form a cylindrical body 10 and then undergo a pre-forming Ring groove step, in this step, a ring groove 11 is milled along the circumferential direction of the body 10, the ring groove 11 is surrounded by an axis X1 of the body 10 as a center, and the ring groove 11 The body 10 is divided into a head portion 12 and a body portion 13, and finally, after the step of forming the tooth shape, the manufacture of the ratchet wheel is completed. In the step of forming the tooth shape, the surface of the body portion 13 is milled along the axial direction X1 A plurality of equally-spaced grooves 14 are formed, and the milling direction is milling from the end opposite to the head 12 along the axial direction X1 toward the head 12, during the milling process, the scraps fall off from the body 13 However, when the milling cutter mills into the ring groove 11, there is often a small amount of scraps curled and one end is still connected to the body 13 and cannot be detached.

It is worth mentioning that the ring groove 11 is used to install a C-shaped buckle. The waste that cannot be dropped will make it difficult to install the C-shaped buckle in the ring groove 11. In view of this, it is indeed necessary to improve the shape of the ratchet In order to solve the problem that the body 13 of the ratchet still has the missing scraps that cannot be detached after processing.

The purpose of the present invention is to solve the defect that waste chips are likely to remain after ratcheting.

To achieve the foregoing object, the present invention is an improved ratchet structure, including: a body having a head and a body with a ring groove circumferentially recessed along the circumference of the body between the head and the body, and The direction in which the head extends to the body is an axial direction, and the surface of the body has a plurality of ratchet teeth protruding along the axial direction, each of the ratchet teeth has a bottom end close to the head, the There is a predetermined distance between the bottom end and the ring groove.

In a preferred embodiment, each of the ratchet teeth has a top end close to the head, and a groove is defined between each two ratchet teeth, the groove has a groove bottom surface, and the top end is away from the recess The bottom surface of the groove is a first distance.

In a preferred embodiment, a groove is defined between every two of the ratchet teeth, the groove has a groove bottom surface, and the groove bottom surface and the bottom end overlap on the side surface of the body.

In a preferred embodiment, the bottom end is lower than the bottom surface of the groove on the side of the body, so that there is a second distance between the bottom surface of the groove and the bottom end.

To achieve the foregoing object, the present invention is an improved ratchet structure, including: a body having a head and a body with a ring groove circumferentially recessed along the circumference of the body between the head and the body, and The direction in which the head extends to the body is an axial direction, the surface of the body has a plurality of ratchet teeth protruding along the axis, and each ratchet tooth and the ring groove are along the body A pre-groove is circumferentially recessed, and the diameter of the body at the ring groove is smaller than the diameter of the body at the pre-groove.

In order to achieve the foregoing object, the present invention is an improved ratchet structure, including: a body having a head and a body with a ring groove circumferentially recessed along the circumference of the body between the head and the body The ring groove has a ring groove bottom surface, and the direction in which the head extends to the body is an axial direction, and the surface of the body has a plurality of ratchet teeth protruding along the axial direction, each of the ratchets The teeth respectively have a bottom end close to the head, and there is a predetermined distance between the bottom end and the ring groove, and each of the ratchet teeth and the ring groove surrounds a recess along the circumferential direction of the body A groove, the pre-groove has a pre-groove bottom surface, the pre-groove bottom surface defines a third distance between the radial direction of the body and the top end, the ring groove bottom surface along the radial direction of the body and the A fourth distance is defined between the tips, and the third distance is smaller than the fourth distance.

In a preferred embodiment, each of the ratchet teeth has a top end that is farther from the bottom end than the head, and a groove is defined between every two ratchet teeth, the groove has a groove bottom surface, the The top is a first distance from the bottom of the groove.

In a preferred embodiment, the bottom end is closer to the head than the top end, so that an end face between the bottom end and the top end is inclined with respect to the axial direction.

In a preferred embodiment, the distance between the bottom end and the top end and the head is equal, so that the end face between the bottom end and the top end is perpendicular to the axial direction.

In a preferred embodiment, the bottom end is farther from the head than the top, so that an end surface between the bottom end and the top is inclined with respect to the axial direction.

Due to the pre-distance between the bottom end and the ring groove, when the milling cutter forms the groove through the body and enters the pre-groove, the scraps connecting the bottom surface of the ring groove advance the pre-milling cutter After the groove is cut, it will be surely cut to prevent the residue of the waste from adhering to the body, thereby solving the problem of the waste residue that is easy to remain when processing the ratchet.

10: Ontology

11: Ring groove

12: head

13: Body

14: groove

X1: axial

20: Ontology

21: head

22: Body

23: Ring groove

231: ring groove bottom

24: Ratchet

241: bottom

242: top

25: groove

251: groove bottom

26: predictive groove

261: Pre-groove bottom

L1: Estimated distance

H1: first distance

H2: second distance

H3: third distance

H4: fourth distance

X2: axial

Figure 1 is a side view of a conventional ratchet.

2 is a side view of the present invention in the first embodiment.

Fig. 3 is a side view of the present invention in a second embodiment.

4 is a side view of the present invention in a third embodiment.

5 is a side view of the fourth embodiment of the present invention.

Referring to FIG. 2, the present invention is an improved ratchet structure, including: a body 20, generally cylindrical, and the body 20 has an axial X2, the body 20 has a head 21 connected along the axial X2 And a body 22 with a ring groove 23 between the head 21 and the body 22, the ring groove 23 is annularly recessed along the circumferential direction of the body 20, and each of the ratchet teeth 24 has a bottom end 241 and a top end 242, respectively , The surface of the body portion 22 has a plurality of ratchet teeth 24 protruding along the axial direction X2, a predetermined distance L1 between the bottom end 241 and the ring groove 23, and every two of the ratchet teeth 24 A groove 25 is defined therebetween, the groove 25 has a groove bottom surface 251, and the top end 242 is a first distance H1 from the groove bottom surface 251; in this embodiment, the groove bottom surface is on the side of the body 251 overlaps with the bottom end 241.

Referring to FIG. 5, in the fourth embodiment, the bottom end 241 can be lower than the groove bottom surface 251 on the side of the body, so that the bottom end 241 is a second distance H2 from the groove bottom surface 251.

Preferably, the top end 242 is farther from the head 21 than the bottom end 241.

Preferably, a pre-groove 26 is recessed between each of the ratchet teeth 24 and the ring groove 23 along the circumference of the body 20. The diameter of the body 20 at the ring groove 23 is smaller than that of the body 20. The diameter of the prediction groove 26 is long.

In detail, the ring groove 23 has a ring groove bottom surface 231, the pre-groove 26 has a pre-groove bottom surface 261, and the pre-groove bottom surface 261 defines a first along the radial direction of the body 20 and the top end 242 Three distances H3, the bottom surface 231 of the annular groove defines a fourth distance H4 along the radial direction of the body 20 and the top end 242, and the third distance H3 is smaller than the fourth distance H4.

Referring to FIG. 2, in the first embodiment, the bottom end 241 is closer to the head 21 than the top end 242, so that an end surface between the bottom end 241 and the top end 242 is inclined with respect to the axial direction X2.

Referring to FIG. 3, in the second embodiment, the distance between the bottom end 241 and the top end 242 and the head 21 is equal, so that the end face between the bottom end 241 and the top end 242 is opposite to the axial direction X2 It is vertical.

Referring to FIG. 4, in the third embodiment, the bottom end 241 is farther away from the head 21 than the top end 242, so that an end surface between the bottom end 241 and the top end 242 is inclined with respect to the axial direction X2.

The above are the structural configurations and structural relationships of the present invention in different embodiments. The usage of the present invention is as follows: The forming method of the improved ratchet structure of the present invention includes: a pre-forming step: forming the initial embryo of the body 20; A step of forming a ring groove 23: forming the ring groove 23 by milling around the circumference of the body 20, and defining the head 21 and the body 22 by the ring groove 23; a step of forming a pre-groove 26: Milling along the circumferential direction of the body 20 and between the annular groove 23 and the body 22 to form the pre-groove 26; a milling step: from the surface of the body 22 along the axial direction X2 milling through The groove 25.

Since the pre-distance L1 is between the bottom end 241 and the ring groove 23, when the milling cutter forms the groove 25 through the body 22 and enters the pre-groove 26, the scraps connected to the bottom surface 231 of the ring groove After the milling cutter enters the pre-groove 26, it will be surely cut off, thereby preventing the residual scraps from adhering to the body 20, thereby solving the defect of the residual scraps easily when processing the ratchet.

20: Ontology

21: head

22: Body

23: Ring groove

231: ring groove bottom

24: Ratchet

241: bottom

242: top

25: groove

251: groove bottom

26: predictive groove

261: Pre-groove bottom

L1: Estimated distance

H1: first distance

H2: second distance

H3: third distance

H4: fourth distance

X2: axial

Claims (7)

An improved ratchet structure includes: a body with a head and a body, a ring groove circumferentially recessed along the circumference of the body between the head and the body, and the head extends to the body The direction is an axial direction, the surface of the body has a plurality of ratchet teeth protruding along the axial direction, each ratchet tooth has a bottom end close to the head, between the bottom end and the ring groove With a predetermined distance, a groove is defined between each two of the ratchet teeth, the groove has a groove bottom surface, the bottom end on the side of the body is a plane reference lower than the groove bottom surface, so that the groove There is a second distance between the bottom surface and the bottom end. The improved ratchet structure according to claim 1, wherein each of the ratchet teeth has a tip close to the head, and a groove is defined between every two ratchet teeth, the groove has a groove bottom surface, The top is a first distance from the bottom of the groove. The improved ratchet structure according to claim 1, wherein a groove is defined between each two of the ratchet teeth, the groove has a groove bottom surface, and the side surface of the body is a plane reference, the groove bottom surface and the The bottom ends overlap. According to the improved ratchet structure of claim 3, each of the ratchet teeth has a top end farther from the bottom end than the head, and a groove is defined between every two of the ratchet teeth, and the groove has a groove The bottom surface, the top end is a first distance from the bottom surface of the groove. The improved ratchet structure according to claim 2, wherein the bottom end is closer to the head than the top end, so that an end surface between the bottom end and the top end is inclined with respect to the axial direction. The improved ratchet structure of claim 2, wherein the distance between the bottom end and the top end and the head is equal, so that the end surface between the bottom end and the top end is perpendicular to the axial direction. The improved ratchet structure according to claim 2, wherein the bottom end is farther away from the head than the top end, so that an end surface between the bottom end and the top end is inclined with respect to the axial direction.

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