JP3209448U - Ratchet wrench - Google Patents

Abstract

A ratchet wrench structure that prevents excessive rotation of forward and reverse shift buttons and facilitates rotation operation is provided. A main body, a ratchet, a detent, and a control unit are provided, and a concave arc portion and an installation step concave portion are provided in the detent. Two convex parts are provided in the concave arc part, the control unit has the shift button 61, the engaging part and the elastic part, the slit shaft and the notch groove part are provided on the circular shaft of the shift button, the engaging part is installed in the slit, and the engaging part Slots and tip protrusions are provided in the parts, the tip protrusions are provided in the installation step recesses, and are projected and exposed outside the slits, and the elastic parts are installed in the chip grooves and slots, and the engaging parts are detented by the elastic force. It is made to contact | abut to the concave arc part. [Selection] Figure 1

Description

  The present invention relates to a structure of a ratchet wrench, and more particularly to a structure of a ratchet wrench that is a tool having a forward / reverse drive function.

  As for a conventional ratchet wrench, U.S. Pat. No. 7,121,170 has one head 51 mainly at the end of the shank 50. A tool head 60 and a ratchet block 65 are provided in the head 51. The ratchet block 65 is operated by a position shift structure having one shift block 70. The shift block 70 has one through tank 71 corresponding to the ratchet block 65. Two chip grooves 76 are provided at the center of the rear end of the orientation sheet 75. In the penetration tank 71, a stereotactic sheet 75 that comes into contact with the ratchet block 65 is provided. One guide sheet 77 is provided between the two notch grooves 76. The positioning sheet 75 can be supported by the guide sheet 77 through the spring 78, so that the positioning sheet 75 can stably support the ratchet block 65. However, the disadvantages of the prior art are: 1. The total length of the stereotactic sheet 75 is shorter than the outer diameter of the shift block 70, and the user presses the shift block 70 and rotates the tool head 60, whereby the back sound of the ratchet block 65 is obtained. To test. The positioning sheet 75 may come into contact with the spring 78 by pushing the ratchet block 65, and the positioning sheet 75 is completely immersed in the shift block 70 instantaneously. FIG. 23 shows that the orientation sheet 75 does not protrude to the ratchet block tank 53 and is hidden inside the shift block 70, so that the orientation sheet 75 is 360 degrees in the shift block tank 54 according to the shift block 70. There is a drawback that the shift block 70 rotates excessively in the shift block tank 54. As shown in FIG. 23, when the user continues to rotate the shift block 70 counterclockwise and rotates to the angle shown in FIG. 24 in a state of excessive rotation, there is a gap between the ratchet block 65 and the ratchet block tank 53. The stereotactic sheet 75 receives the elasticity of the spring 78 and jumps to the gap, and the ratchet block 65 and the stereotactic sheet 75 enter the ratchet block tank 53 at the same time, so that the ratchet wrench can be used continuously. Disappear.

  Another prior art ratchet wrench is Taiwan Patent Application No. 1511847 filed by the present applicant. As shown in FIGS. 3 to 5, the outer diameter of the shift button 41 is longer than the total length of the engaging parts 42, and in view of the fact that it is the same as the problem of US Pat. No. 7,121,170, further improvement is necessary. .

US Pat. No. 7,121,170 Taiwan Patent Application No. 15111847 JP 2016-120571 A Japanese Patent Laying-Open No. 2006-16506

  In order to solve the drawbacks of the known structure, it is a main object of the present invention to provide a ratchet wrench structure that can prevent the shift button from rotating excessively.

  In order to solve the above problems, the present invention provides a ratchet wrench structure. Included are the body, ratchet, detent and control unit. A ratchet is installed on the body to allow detent and rotation. A concave arc part and an installation step concave part are provided in the detent. Convex portions are provided at both ends of the concave arc portion. The control unit includes a shift button, a hooking part, and an elastic part. The circular shaft of the shift button is provided on the main body so that it can rotate. A slit and a notch groove are provided on the circular shaft. The hooking parts are installed in the slit. A slot and a tip protrusion are provided on the engaging part. The tip projection is installed in the installation step recess and protrudes out of the slit and exposed. The elastic part is installed in the chip groove part and the slot, and the engaging part receives the elastic force of the elastic part and comes into contact with the concave arc part of the detent.

  The structure of the present invention has an effect of preventing the shift button from rotating excessively.

It is a perspective exploded view of the ratchet wrench of the present invention. It is a main body perspective view of the ratchet wrench of this invention. It is a perspective exploded view of some parts of a ratchet wrench of the present invention. It is a perspective view of the ratchet of the ratchet wrench of the present invention. It is a perspective assembly view of a part of the ratchet wrench of the present invention. It is a front view of some components of the ratchet wrench of the present invention. It is sectional drawing of the AA part of FIG. It is a perspective view of the detent of the ratchet wrench of the present invention. It is a front view of the detent of the ratchet wrench of the present invention. It is a perspective view of the shift button of the ratchet wrench of the present invention. It is a front view of the shift butane of the ratchet wrench of this invention. It is the perspective view seen from another angle of the shift button of the ratchet wrench of this invention. It is a perspective view of the latching parts of the ratchet wrench of the present invention. It is a side view of the latching parts of the ratchet wrench of the present invention. It is a perspective assembly view of a part of the ratchet wrench of the present invention. It is a perspective assembly view of the ratchet wrench of the present invention. It is a front view of the ratchet wrench of the present invention. It is sectional drawing of the BB part of FIG. It is the perspective view which looked at the detent and control unit of the ratchet wrench of this invention from another angle. It is a side view of the ratchet wrench of the present invention. It is sectional drawing of the CC part of FIG. It is sectional drawing of the BB part of FIG. It is sectional drawing of the ratchet wrench of a prior art. It is sectional drawing of the ratchet wrench of a prior art.

Hereinafter, the structure, features, and effects of the present invention will be described in detail with reference to the best embodiments and drawings.

1 to 14 show a ratchet wrench of the present invention. Included are a main body 10, a ratchet 20, a rotating disk 30, an inner lid 41 and an outer lid 42. The main body 10 is provided with a circular opening 11 penetrating vertically. An arc-shaped recess 12 is provided on one side of the circular hole 11. The center of the arc-shaped recess 12 is located within the range of the circular opening 11.
The diameter of the arc of the arc-shaped recess 12 is smaller than the diameter of the circular opening 11, the upper portion of the arc-shaped recess 12 is in an open state, and the shaft hole 13 is formed on one side of the arc-shaped recess 12. The diameter of the shaft hole 13 is smaller than the diameter of the arc of the arc-shaped recess 12. The lower portion of the shaft hole 13 is open. An embedded arc-shaped recess 14 is provided coaxially at the upper end of the circular opening 11. An arc-shaped engaging groove 15 is coaxially formed on the upper wall surface of the arc-shaped recess 12. An arc-shaped rotation limiting groove 16 having the same diameter is formed in the bottom of the shaft hole 13. Two arc-shaped grooves 17 are recessed in the inner peripheral surface of the circular hole 11. A concave groove 18 that opens between the arc-shaped concave portion 12 and the shaft hole 13 is provided.

The ratchet 20 is pivotally installed in the circular hole 11, the planar first end 201 is provided at one end, the annular groove 23 is provided at the other end, and the engaging teeth 21 are disposed on the outer peripheral surface. A combination portion 211 is provided in the hook tooth 21 at a location near the first end portion 201. The combination part 211 protrudes outward in a state where the ratchet 20 is accommodated in the circular hole 11. The annular groove 23 and the first end portion 201 are at opposite positions, and one chip groove portion 24 is provided in the annular groove 23.
A non-circular inner circumferential sleeve opening 25 that passes through the center of the ratchet 20 and has a hexagonal shape, a dodecagonal shape, or other shapes is provided. The chip groove 24 communicates from the annular groove 23 to the sleeve opening 25.
A circular engagement groove 26 having a circular opening is provided on the inner peripheral surface of the first end 201. The circular engagement groove 26 and the sleeve opening 25 communicate with each other. The inner diameter of the circular engagement groove 26 is larger than the diameter of the circumscribed circle of the sleeve opening 25. A flat plane base 27 is provided between the circular engagement groove 26 and the sleeve opening 25. A flange 28 is provided in a portion of the sleeve opening 25 close to the flat table 27. The hand tool component does not come out of the sleeve opening 25 by contacting each other with the hand tool component engaged with the sleeve opening 25 by the flange 28.

The rotating disk 30 and the ratchet 20 are coupled (FIG. 5). Convex teeth 31 are formed on the outer peripheral surface of the rotating disk 30. The convex tooth 31 protrudes outwardly in a state in which the ratchet 30 is accommodated in the circular opening 11 of the main body 10, and the outer diameter included is larger than the outer diameter included in the engaging tooth 21.
A second end 32 and a circular hole-shaped butt portion 33 are provided at the other end of the rotating disk 30, the second end portion 32 comes into contact with the end surface of the main body 10, and the butt portion 33 is firmly joined to the ratchet 20. The unit 211 is coupled. The rotary disk 30 is provided with a circular hole-shaped sleeve portion 34, and the sleeve portion 34 and the articulating portion 33 communicate with each other and present a state of a through-groove. The diameter of the sleeve portion 34 is smaller than the diameter of the sleeve portion 33. The diameter of the sleeve portion 34 is larger than the diameter of the circumscribed circle of the sleeve opening 25. A flat flat contact portion 35 is provided between the sleeve portion 34 and the sleeve portion 33.

  The circular inner lid 41 is for sealing the sleeve opening 25, and includes an outer peripheral portion 411. The inner lid 41 is provided with an inner peripheral portion 412 toward the sleeve opening 25.

The circular outer lid 42 is installed in the ratchet 20 and the rotating disk 30. The outer lid 42 is placed on the outer peripheral surface of the inner lid 41. An outer edge portion 421 and an inner edge portion 422 are provided on the outer lid 42, the outer edge portion 421 is provided on the sleeve portion 34, and the inner edge portion 422 is positioned in the circular engagement groove 26. A sleeve portion 423 is provided between the outer edge portion 421 and the inner edge portion 422, and the diameter of the sleeve portion 423 is larger than the diameter of the outer edge portion 421.
By installing the sleeve portion 423 between the first end portion 201 and the flat contact portion 35, the outer lid 42 is limited to the first end portion 201 and the flat contact portion 35 and falls out of the ratchet 20 and the rotating disk 30. Absent. A contact portion 424 is provided at an opening portion at one end of the outer lid 42. The abutting portion 424 contacts the flat table 27, and the outer lid 42 has a storage chamber 425 for penetrating in the axial direction and putting the inner lid 41 inside. A hooking portion 426 is provided in a portion near the opening of the outer edge portion 421 of the storage chamber 425, and the outer peripheral portion 411 contacts the hooking portion 426. Since the inner lid 41 is limited to the flat base 27 and the hooking portion 426, the inner lid 41 cannot come out of the ratchet 20 and the outer lid 42. Further, the inner lid 41 can be displaced by one distance in the storage chamber 425.

  As shown in FIGS. 5 to 7, the rotary disk 30 is coupled onto the ratchet 20, and the inner lid 41 seals the sleeve opening 25. An outer lid 42 is installed in the ratchet 20 and the rotating disk 30 and is installed outside the inner lid 41. The inner lid 41 can be displaced in the storage chamber 425 of the outer lid 42.

As shown in FIGS. 8 and 9, the detent 50 is installed on one side in the arc-shaped recess 12 so that it can be displaced left and right. A plurality of meshing teeth 51 are provided on the front side of the detent 50 to mesh with the engaging teeth 21 on the outer peripheral surface of the ratchet 20. A concave arc portion 52 is provided on the rear side of the detent 50. The concave arc portion 52 includes a first arc surface 521 and two second arc surfaces 522 that are symmetric with respect to the first arc surface 521.
The detent 50 is provided with an installation step recess 53 at least at one end. The installation step recess 53 is different from the detent 50 in height. One convex portion 54 is provided on each end of the concave arc portion 52.
The control unit 60 is pivotally installed in the shaft hole 13 of the main body 10, and the control unit 60 is rotated to control the detent 50 to be displaced left and right within the arc-shaped recess 12 of the main body 10, and the forward and reverse rotation of the ratchet wrench. To control.
The control unit 60 includes a shift button 61, a hooking part 62, and an elastic part 63 (FIG. 19).

As shown in FIGS. 10 to 12, the shift button 61 has a circular shaft 611 and pivots the circular shaft 611 into the shaft hole 13 of the main body 10.
An outer diameter 6111 of the circular shaft 611, an end surface 612 is provided on the circular shaft 611, and a long slit 613 along the axial direction of the circular shaft 611 is provided on the circular shaft 611. The slit 613 passes through the circular shaft 611, and the slit 613 is open at the end surface 612, that is, all three directions of the slit 613 are open. The circular groove 611 is provided with a chip groove portion 615 that exhibits a non-penetrating and circular hole. The diameter 616 of the notch groove 615 is larger than the width 614 of the slit 613. The circular shaft 611 is provided with first concave surfaces 617 that are symmetrical with each other on both sides of the slit 613.
A shift sheet 618 is provided on the shift button 61, the shift sheet 618 protrudes outside the shaft hole 13 of the main body 10 and is exposed, and a second convex block 619 is provided on one end of the circular shaft 611 near the shift sheet 618 (see FIG. 12). By positioning the second convex block 619 in the rotation limiting groove 16 of the shaft hole 13 of the main body 10, the second convex block 619 can be displaced within the range of the rotation limiting groove 16. That is, the shift button 61 is restricted from rotating at the maximum angle by the second convex block 619 and the rotation restricting groove 16.

As shown in FIGS. 13 and 14, the engaging part 62 has a U shape and is located in the slit 613 of the control unit 60. The engaging part 62 has a length 620, and the engaging part 62 is provided with a first side face 6201 and a second side face 6202 on both sides of the slot 621 and the length 620. The width 622 of the slot 621 is equal to or larger than the diameter 616 of the notch groove 615 of the control unit 60.
A second concave surface 624 and two contact surfaces 623 formed symmetrically at both ends of the second concave surface 624 are provided at the end of the hooking part 62. A tip protrusion 625 is provided at one end of the hooking part 62, and the tip protrusion 625 is located in the installation step recess 53 of the detent 50 so as to be laterally displaced, and protrudes and is exposed outside the slit 613. The width between the tip protrusion 625 and the first side surface 6201 is a vertical width 626. A missing angle 627 is provided at the other end of the top of the engaging part 62, and the maximum distance 628 is between the missing angle 627 and the tip protrusion 625.

  The circular shaft 611 of the control unit 60 is pivoted in the shaft hole 13 of the main body 10, and the outer diameter 6111 is the same as the diameter of the shaft hole 13 and is longer than the length 620 of the engaging part 62. The vertical width 626 is longer than the length 620 (that is, longer than the length of the engaging part 62) and longer than the outer diameter 6111 of the circular shaft 611. The length 620 is the same as or longer than the maximum distance 628. The vertical width 626 is longer than the maximum distance 628.

  The elastic part 63 is installed between the notch groove 615 and the slot 621. The two contact surfaces 623 contact the second arc surface 522 under the elasticity of the elastic component 63. The concave arc portion 52 includes one first arc surface 521 and two second arc surfaces 522. Thus, it is best that the arc radius of the second arc surface 522 approaches the contact surface 623, the shift button 61 can rotate, and the detent 50 is controlled by controlling the engaging part 62 and the detent 50. It can be displaced left and right within the arc-shaped recess 12 of the main body 10.

  The lid body 70 has a crescent shape and is installed in the arc-shaped engaging groove 15 of the body 10 to seal the arc-shaped recess 12. The lid body 70 is provided with a first peripheral surface 71 having an arc shape, and the peripheral surfaces of the first peripheral surface 71 and the circular opening 11 overlap each other.

  The first buckle 80 has elasticity and is installed in the annular groove 23 of the ratchet 20 and the embedded arc-shaped recess 14 of the main body 10. The ratchet 20 is limited by the rotating disk 30 and the first buckle 80 and pivots in the circular opening 11. The first buckle 80 comes into contact with the lid main body 70, so that the lid main body 70 is restricted by the ratchet 20 and the first buckle 80 and cannot come out of the arc-shaped engaging groove 15. The first buckle 80 is an annular body having a slightly D shape, and a hooking portion 81 is provided thereon. The engaging portion 81 is installed in the chip groove portion 24.

  As shown in FIGS. 15 to 18, the ratchet 20 is installed in the circular hole 11 so that it can rotate. The rotating disk 30 is fixed to the combination part 211. The convex tooth 31 protrudes outside the main body and is exposed. The inner lid 41 seals the sleeve opening 25. The outer lid 42 is installed in the ratchet 20 and the rotating disk 30. A detent 50 is placed in the arc-shaped recess 12. The control unit 60 is pivoted in the shaft hole 13. The lid body 70 is installed in the arc-shaped engaging groove 15.

  As shown in FIG. 19, the user rotates the control unit 60 to control the displacement of the detent 50 to the left and right within the arc-shaped recess 12 and to control the forward and reverse rotation of the ratchet wrench. A tip protrusion 625 is provided on the engaging part 62. The vertical width 626 is larger than the outer diameter 6111 (that is, the distance between the tip protrusion 625 and the first side surface 6201 is longer than the outer diameter 6111 of the circular shaft 611), and the tip protrusion 625 protrudes outside the slit 613 and is exposed. When the user turns the shift seat 618 to switch between the forward and reverse rotations of the ratchet wrench, the tip protrusion 625 receives the elasticity of the elastic part 63 and installs in contact with the installation step recess 53 so that the latching part 62 becomes the ratchet. When the engaging part 62 is immersed in the slit 613 by pushing the detent 50 or by other factors when the 20 rotates, the tip protrusion 625 protrudes outside the slit 613 and is exposed. By doing so, the problem that the shift button 61 may rotate excessively in the shaft hole 16 can be avoided. That is, the engaging part 62 has the tip protrusion 625, so that the problems shown in FIGS. 23 and 24 can be avoided.

  As shown in FIG. 20, the control unit 60 is pivoted in the shaft hole 13, and convex portions 54 are projected at the two end portions of the concave arc portion 52 of the detent 50. When the user turns the shift seat 618 to switch between forward and reverse rotation of the ratchet wrench, the engaging part 62 is moved by the shift button 61 and displaced within the range of the concave arc portion 52 of the detent 50. By projecting the two convex portions 54 at the two end portions of the concave arc portion 52, the engaging part 62 is limited to the two convex portions 54 when being displaced by the concave arc portion 52. When the shift button 61 rotates in the shaft hole 13, the problem of excessive rotation can be avoided because of the limitation of the angle.

  As shown in FIG. 22, the second convex block 619 is provided at one end of the shift shaft 61 near the shift sheet of the circular shaft 611. The second convex block 619 is installed in the rotation limiting groove 16, and the second convex block 619 can be displaced left and right within the range of the rotation limiting groove 16. When the user rotates the shift seat 618 to switch between forward rotation and reverse rotation of the ratchet wrench, the maximum angle at which the shift button 61 can rotate is limited to the rotation limiting groove 16 and the second convex block 619 to avoid the problem of excessive rotation. be able to.

  The advantages of the present invention are as follows:

  1. As shown in FIG. 19, the tip protrusion 625 protrudes and is exposed outside the slit 613, and the shift button 61 can be prevented from rotating excessively in the shaft hole 16.

  2. As shown in FIG. 21, the engaging part 62 is displaced between the two convex portions 54 by the shift button 61, and the shift button 61 can be prevented from rotating excessively.

  3. As shown in FIG. 22, the maximum angle at which the shift button 61 can rotate is limited by the rotation limiting groove 16 and the second convex block 619, so that excessive rotation can be avoided.

  4. As shown in FIG. 2, the circular opening 11 penetrates, and one end of the arc-shaped recess 12 is open, which makes it easy to process using a drill tool.

  As shown in FIG. 7, the outer lid 42 is limited to the first end portion 201 and the flat contact portion 35, and does not come out of the ratchet 20 and the rotating disk 30.

  6 and the second concave surface 624 can reduce the contact area between the engaging part 62, the concave arc portion 52, and the second arc surface 522. Since the shift button 61 can control the rotation of the engaging part 62 and the detent 50, the detent 50 is displaced left and right within the arc-shaped recess 12.

  7. The lid body 70 is restricted by the ratchet 20 and the first buckle 80 and cannot come out of the arc-shaped engaging groove 15.

10 Body
11 Circular opening 12 Arc-shaped recess
13 Shaft hole 14 Embedded arc-shaped recess
15 Arc shaped engaging groove 16 Arc shaped rotation limiting groove
17 Arc-shaped groove 18 Recessed groove
20 Ratchet
201 first end 21 hook teeth
211 Union part 23 Annular groove
24 Notch groove 25 Sleeve opening
26 Circular Gutter 27 Platform
28 Flange 30 Rotating disc
31 Convex 32 Second end
33 Jacket 34 Sleeve
35 Flat collision part 41 Inner lid
411 Outer peripheral part 412 Inner peripheral part
42 outer lid
421 Outer edge 422 Inner edge
423 Sleeve part 424 Contact part
425 Storage room 426
50 detents
51 meshing teeth 52 concave arc part
521 First arc surface 522 Second arc surface
53 Installation step recess 54 Projection 60 Control unit
61 Shift button 611 Circular shaft
6111 outer diameter 612 end face
613 Slit 614 width
615 chipped groove 616 circular
617 First concave surface 618 Shift sheet
619 2nd convex block 62 hooking parts
620 length 6201 first side
6202 Second side surface 621 slot
622 width 623 contact surface
624 Second concave surface 625 Tip projection
626 Vertical width 627 Missing angle
628 Maximum distance 63 Elastic parts
70 Lid body
71 First peripheral surface 80 First buckle 81 Engagement part

Claims (10)

Consists of main body, ratchet, detent and control unit,
The main body has a circular hole penetrating vertically, an arc-shaped recess is provided on one side of the circular opening, a shaft hole is provided on one side of the arc-shaped recess, and one of the shaft holes is open. Presents a state,
The ratchet is pivotally installed in the circular opening so as to be rotatable, and an engagement tooth is formed on the outer peripheral surface thereof.
The detent is installed in the arc-shaped recess of the main body so that it can be displaced left and right, and a plurality of meshing teeth are provided on one front side to mesh with the engagement teeth, and a concave arc part is provided on the other rear side, The detent is provided with an installation step concave portion that forms a step with the detent at least at one end, and one convex portion is provided on each end of the concave arc portion,
The control unit is pivotally installed in the shaft hole of the main body, and can rotate and rotate the detent to the left and right in the arc-shaped recess to control forward and reverse rotation of the ratchet wrench.
The control unit includes a shift button, a hooking part and an elastic part,
The shift button is provided with a circular shaft, and the circular shaft is rotatably provided in the shaft hole of the main body, and the circular shaft has one end surface, a non-penetrating and circular hole. Providing two slits and slits along the axial direction of the circular shaft;
The slit penetrates the circular axis back and forth and is open at the end face, that is, the slit is open in three directions, and the diameter of the chip groove is larger than the width of the slit,
The hook part has a slot on one side, a first side surface and a second side surface on the same side and the opposite side, respectively, a tip protrusion at one end of the hook part, and the tip protrusion is displaced left and right. It is located in the installation step recess of the detent installed in the arc-shaped recess of the main body and is exposed to protrude outside the slit, and the width between the tip projection and the first side surface is Vertical width,
The outer diameter of the circular shaft pivoted in the shaft hole is the same as the diameter of the shaft hole, longer than the length of the engaging part, and narrower than the vertical width, and the vertical width is longer than the length,
The elastic part is installed in the notch groove part and the slot of the circular shaft, and the engaging part is brought into contact with the concave arc part of the detent by the elastic force of the elastic part,
A structure of a ratchet wrench characterized in that, by rotating the shift button, the engaging part and the detent are controlled and rotated so that the left and right can be displaced in the arc-shaped recess.   The ratchet wrench structure according to claim 1, wherein an upper portion of the arc-shaped recess of the main body is open. An embedded arc-shaped recess is provided coaxially with the arc at the upper end of the circular opening, and an arc-shaped engaging groove is also provided coaxially with the upper end of the arc-shaped recess, and the diameter of the arc-shaped engaging groove is greater than the diameter of the arc-shaped recess. Make it bigger
A lid body exhibiting a crescent shape is installed by engaging with the arc-shaped engaging groove, and an arc-shaped first peripheral surface is provided on the lid body, and the first peripheral surface and the peripheral surface of the circular hole overlap each other. Shall be
An annular groove having a notch groove portion is formed on the outer peripheral surface of the ratchet, and a resilient first buckle having a D-shaped annular shape is fitted between the embedded arc-shaped concave portion, and the first buckle is engaged with the first buckle. The engagement portion is disposed in the chipped groove portion of the annular groove, and the lid body abuts against the first buckle to restrict movement in the arc-shaped engagement groove, and the arc-shaped engagement groove The ratchet wrench structure according to claim 1, wherein escape of the ratchet wrench is prevented. A concave arc-shaped rotation restriction groove is provided in a portion near the opening of the shaft hole of the main body, the rotation restriction groove and the shaft hole communicate with each other, and the diameter of the rotation restriction groove and the diameter of the shaft hole are the same
A shift sheet for operating the control unit is provided at one end of the circular shaft of the control unit, a second convex block is provided at a position near the shift sheet, and the second convex block is provided in the concave arc-shaped rotation limiting groove. The structure of the ratchet wrench according to claim 1, wherein the block is disposed so as to be displaceable. Two arc-shaped grooves are provided on the inner peripheral surface of the circular opening of the main body,
The ratchet wrench structure according to claim 1, wherein a concave groove is provided between the arc-shaped concave portion of the main body and the shaft hole. A first end portion is provided at one end of the ratchet, a combination portion and a circular engagement groove are provided in a portion near the first end portion of the engagement tooth, and the combination portion protrudes out of the circular opening of the main body, One annular groove is provided on the outer peripheral surface of the other end of the ratchet, and one notch groove portion is provided in the annular groove, and a non-circular sleeve opening that penetrates the ratchet in the axial direction is provided. Communicating the sleeve opening;
The circular engagement groove and the sleeve opening communicate with each other, and the inner diameter of the circular engagement groove is larger than the diameter of the circumscribed circle of the sleeve opening, and one circular engagement groove and the sleeve opening are provided between the circular engagement groove and the sleeve opening. Providing a flat plane base, providing a flange in a portion near the plane base of the sleeve opening so that the hand tool parts that come into contact with the sleeve opening by the flange do not come apart from each other;
A rotating disk coupled to one end of the ratchet is provided, and convex teeth are provided on the outer periphery of the rotating disk. The convex teeth are exposed to protrude outside the main body from the ratchet in the main body, and the outer diameter of the circumscribed circle of the convex teeth is Larger than the outer diameter of the engaging tooth of the ratchet outer peripheral surface,
2. The rotating disk is provided with a second end for contacting with an end face of the main body and a butt portion, and the butt portion is firmly coupled to the combination portion of the ratchet. The structure of the described ratchet wrench. One sleeve portion is provided in the rotating disk, and the sleeve portion and the articulated portion are communicated and penetrated, and the diameter of the sleeve portion is smaller than the diameter of the articulated portion, and the diameter of the sleeve portion is the sleeve. A diameter larger than the diameter of the circumscribed circle of the opening, and a flat contact portion is provided between the sleeve portion and the sleeve portion;
A circular inner lid for sealing the sleeve opening is provided, and at the outer peripheral portion and inner peripheral portion of the inner lid, the inner peripheral portion faces the sleeve opening,
A circular outer lid is installed in the ratchet and the rotating disk, the outer lid is provided on the outer peripheral surface of the inner lid, and the outer edge is provided on the sleeve portion at the outer edge and inner edge of the outer lid. The inner edge portion is positioned in the circular engagement groove, and a sleeve portion is provided between the outer edge portion and the inner edge portion, and the diameter of the sleeve portion is larger than the diameter of the outer edge portion. The outer cover is limited to the first end portion and the flat contact portion by placing the sleeve portion between the first end portion and the flat contact portion. So that it does n’t come out,
A contact portion is provided at the opening of the outer lid, the corresponding contact portion touches the flat base, and the outer lid has a storage chamber for passing the inner lid through the axial direction. Since a hooking portion is provided in a portion of the storage chamber near the opening of the outer edge portion, the outer peripheral portion comes into contact with the hooking portion, and the inner lid is limited to the flat base and the hooking portion. In addition, the inner lid cannot be removed from the ratchet and the outer lid, and the inner lid can be displaced by a certain distance in the storage chamber. Item 7. A ratchet wrench structure according to Item 6.   2. The ratchet wrench structure according to claim 1, wherein the concave arc portion of the detent is constituted by a first arc surface and two second arc surfaces symmetrical with respect to the first arc surface.   2. The ratchet wrench structure according to claim 1, wherein an installation step recess is provided at any one of both ends of the detent. The ratchet wrench structure according to claim 1, wherein a first concave surface having a symmetrical arc shape is provided on both sides of the slit provided on the circular shaft of the control unit.

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