JP5404848B2 - Ratchet wrench - Google Patents

Description

  The present invention relates to a ratchet wrench.

  In order to attach and detach bolts or nuts of different types, it is necessary to use a combination of different sockets and ratchet wrench. As shown in FIG. 1, the conventional ratchet wrench includes a wrench body 10, a main driving wheel 11, an adjustment unit 12, a control lever 15, and a piece-like stopper 17. The wrench body 10 has a storage groove 100 and a mounting groove 101. The storage groove 100 has a through hole 102. The mounting groove 101 has a control lever hole 103 and a recessed hole 104 formed in the wall surface. The main driving wheel 11 is stored in the storage groove 100 of the wrench body 10. The adjustment unit 12 is mounted in the mounting groove 101 of the wrench body 10. The teeth 110 of the main driving wheel 11 and the teeth 120 of the adjustment unit 12 mesh with each other. The main driving wheel 11 has a column body 111. The adjustment unit 12 has a protrusion 121 at a central portion on another side, and the protrusion 121 has a depressed arc surface 122 formed on both sides. The wrench body 10 has a stainless ball 13 and a spring 14 in the recessed hole 104, and the stainless ball 13 abuts against one depressed arc surface 122 of the adjustment unit 12. The control lever 15 is mounted on the outer surface of the wrench body 10 and is connected to the adjustment unit 12 by a shaft 16. The piece-like stopper 17 covers the wrench body 10 and is fixed on the wrench body 10 by the tightening unit 18. The hole 170 is used for penetrating the column 111 of the main driving wheel 11, and the shaft hole 171 is used for penetrating the shaft 16. Have Accordingly, the ratchet wrench causes the adjustment unit 12 to be interlocked by the control lever 15, causes one end of the adjustment unit 12 to abut against the wall surface on one side of the mounting groove 101 of the wrench body 10, and causes the main driving wheel 11 to be braked by braking of the adjustment unit 12. It can be transmitted in one direction. However, in a general ratchet wrench, the main driving wheel 11 and the teeth 120 of the adjusting unit 12 mesh with each other by a point contact or a line contact method. This creates a situation where it cannot be reliably transmitted. On the other hand, when the adjustment unit 12 brakes the main driving wheel 11, the wall surface of the adjustment unit 12 and the wall surface of the mounting groove 101 come into contact with each other and are locked.

JP 2011-56653 A

However, the conventional ratchet wrench has a small frictional force because the wall surface is a smooth surface. Therefore, the adjusting unit 12 does not have a very good locking effect, and not only does the deviating phenomenon easily occur, but also cannot reliably achieve the locking and braking effect. On the other hand, the ratchet wrench has only a function of rotating in a single direction or bidirectionally, and the column body 111 is perpendicular to the handle of the wrench body 10, so that the column according to different space restrictions during operation. In addition to being unable to adjust the angle at which the force of the body 111 is applied, the work 111 is inconvenient. On the other hand, the present inventor has completed the present invention as a result of continuous research and improvement in view of the above-described drawbacks of the conventional ratchet wrench.
The present invention achieves the best locking and braking effect by switching the rotation direction of the main driving wheel reliably, and adjusts the angle of the socket of the main driving wheel back and forth, and according to different space restrictions during work, An object of the present invention is to provide a ratchet wrench that not only can adjust the angle at which force is applied, but also is extremely convenient for work and has stability during transmission.

  The ratchet wrench according to the invention of claim 1 includes a wrench main body, a main driving wheel, a passive wheel, and a plate-like cap. The wrench body has a recessed surface on the side surface of the operating end, a storage groove and a mounting groove that are connected to each other in the recessed surface, and a communication hole that communicates the storage groove on another side surface of the operating end, Has a lever. The main driving wheel is mounted in the storage groove of the wrench body and has first teeth and a socket. The passive wheel is mounted in the mounting groove of the wrench body and has second teeth that mesh with the first teeth of the main driving wheel. The plate-like cap has a through hole that covers the recessed surface of the wrench body and through which the socket of the main driving wheel can pass.

  The mounting groove of the wrench body has a first ratchet on the inner wall surface. The main driving wheel has a spherical body and has an arc surface on the outer wall surface of the first tooth. The passive wheel has a depressed arc surface corresponding to the arc surface of the first tooth of the main driving wheel between the second teeth. The second tooth of the passive ring has a second ratchet. The second ratchet of the passive wheel and the first ratchet on the inner wall surface of the mounting groove of the wrench body mesh with each other. The passive wheel further includes an interlocking perforation, an interlocking unit mounted in the interlocking perforation, a support unit, and a spring. The interlocking unit has a support hole, one end is connected to a lever on the outside of the wrench body, and the other end is fixed to the plate-like cap. The support unit has a protruding column that is attached to the interlocking unit, enters the interlocking perforation of the passive wheel, and is inserted into the support perforation of the interlocking unit. The spring covers the protruding column of the support unit and is positioned between the support unit and the interlocking unit.

  According to the invention which concerns on Claim 2, a clamping unit is further provided. The working end of the wrench body has a recessed groove at a position corresponding to the mounting groove on another side. The wrench body has a plurality of connection perforations that connect the recessed surface and the recessed groove. The interlocking unit has a protruding fixing unit on one side and a protruding fixing column on the other side. The wrench body has a piece-like stopper in the recessed groove. The piece-like stopper has a hole through which the protruding fixing unit of the interlocking unit can pass, and has a screw hole at a position corresponding to the connection drilling of the wrench body. The lever is attached to the outer surface of the piece-like stopper and has a connection hole and a connection unit disposed in the connection hole. The connecting unit is connected to the protruding fixing unit of the interlocking unit. The plate-like cap has a fixing hole capable of fixing the protruding fixing column of the interlocking unit, and has a tightening hole at a position corresponding to the connection hole of the wrench body. The tightening unit is inserted and tightened into the tightening hole of the plate-shaped cap, the connection hole of the wrench body, and the screw hole of the piece-like stopper.

It is a disassembled perspective view which shows the conventional ratchet wrench. It is a disassembled perspective view which shows the ratchet wrench by one Embodiment of this invention. It is a perspective view which shows the ratchet wrench by one Embodiment of this invention. It is a perspective view which shows the ratchet wrench by one Embodiment of this invention. It is a schematic diagram which shows the state which switches the braking direction of the main driving wheel of the ratchet wrench by one Embodiment of this invention. It is a schematic diagram which shows the state which the ratchet wrench idles by one Embodiment of this invention. It is a schematic diagram which shows the latching and braking system which switches the main driving wheel of the ratchet wrench to another rotation direction by one Embodiment of this invention. It is a schematic diagram which shows the use condition which rotates the socket of the main driving wheel of the ratchet wrench by one Embodiment of this invention. It is a schematic diagram which shows the use condition which rotates the socket of the main driving wheel of the ratchet wrench backward by one Embodiment of this invention.

Hereinafter, a ratchet wrench according to an embodiment of the present invention will be described with reference to the drawings.
(One embodiment)
As shown in FIGS. 2 to 5, the ratchet wrench 1 according to the embodiment of the present invention includes a wrench body 2, a main driving wheel 3, a passive wheel 4, a piece-like stopper 5, and a plate-like cap 6. The wrench body 2 has a recessed surface 21 on the side surface of the operating end 20, a storage groove 22 and a mounting groove 23 that are connected to each other in the recessed surface 21, and penetrates the storage groove 22 on another side surface of the operating end 20. A recessed groove 230 corresponding to the position of the communication hole 220 and the mounting groove 23 is provided. The depression surface 21 has a plurality of connection holes 210 connected to the depression groove 230. The mounting groove 23 has a plurality of first ratchets 231 on opposite sides of the inner wall surface. The main driving wheel 3 is mounted in the storage groove 22 of the wrench body 2 and has a spherical shape. The main driving wheel 3 has a first tooth 30 and a socket 32, and has an arc surface 31 on the outer wall surface of the first tooth 30. The passive wheel 4 is mounted in the mounting groove 23 of the wrench body 2 and has second teeth 40 that mesh with the first teeth 30 of the main driving wheel 3. The passive wheel 4 has a depressed arc surface 41 corresponding to the arc surface 31 of the first tooth 30 of the main driving wheel 3 between the second teeth 40, and a plurality of second ratchets 42 on the second tooth 40. . The passive wheel 4 further includes an interlocking hole 43, an interlocking unit 44 mounted in the interlocking hole 43, a support unit 45, and a spring 46. The interlocking unit 44 has a support hole 440, has a protruding fixing unit 441 on one side, and has a protruding fixing column 442 on the other side. The support unit 45 is attached to the interlocking unit 44 and enters the interlocking perforation 43 of the passive wheel 4 and has a protruding column 450. The spring 46 covers the protruding column 450 of the support unit 45 and is positioned between the support unit 45 and the interlocking unit 44. The piece-like stopper 5 is mounted in the recessed groove 230 of the wrench body 2, has a hole 50, and has a screw hole 51 at a position corresponding to the connection hole 210 of the recessed groove 230 of the wrench body 2. The piece-like stopper 5 has a lever 52 on the outer surface. The lever 52 has a connection hole 520 and a connection unit 53 disposed in the connection hole 520. The connecting unit 53 is connected to a protruding fixing unit 441 on one side of the interlocking unit 44. The plate-like cap 6 covers the recessed surface 21 of the wrench body 2 and has a through hole 60. The plate-like cap 6 further has a fixing hole 61 used for mounting the protruding fixing column 442 of the interlocking unit 44, and a tightening hole 62 corresponding to the position of the connecting hole 210 of the recessed surface 21 of the wrench body 2, and is tightened. It has a fastening unit 63 arranged in the perforated hole 62. The above is the structure of the ratchet wrench 1 according to one embodiment of the present invention.

  As shown in FIGS. 2 to 5, when assembling the present invention, first, the protruding fixing unit 441 on one side of the interlocking unit 44 is inserted into the hole 50 of the piece-like stopper 5, and then the lever 52 is moved to the piece-like stopper 5. And is fixed to the protruding fixing unit 441 of the interlocking unit 44 by the connecting unit 53. Subsequently, the piece-like stopper 5 is mounted in the recessed groove 230 of the wrench body 2, the spring 46 is put on the protruding column 450 of the support unit 45, and then the interlocking column 450 is inserted into the support hole 440 of the interlocking unit 44. The unit 44, the support unit 45 and the spring 46 are collected in the mounting groove 23 of the wrench body 2. Subsequently, the passive wheel 4 is mounted in the mounting groove 23 of the wrench body 2, and then the combined interlocking unit 44, support unit 45 and spring 46 are inserted into the interlocking hole 43 of the passive wheel 4. Subsequently, the main driving wheel 3 is mounted in the storage groove 22 of the wrench body 2 and the first teeth 30 of the main driving wheel 3 and the second teeth 40 of the passive wheel 4 are engaged with each other. Subsequently, the screw hole 51 of the piece-like stopper 5 is aligned with the connection hole 210 of the wrench body 2, and the plate-like cap 6 is put on the recessed surface 21 of the wrench body 2. At this time, the socket 32 of the main driving wheel 3 attached to the storage groove 22 of the wrench body 2 passes through the through hole 60 of the plate-like cap 6 and is inserted into the interlocking hole 43 of the passive wheel 4, and the protruding fixing column 442 of the interlocking unit 44. Enters the fixing hole 61 of the plate-like cap 6. Subsequently, by inserting the tightening unit 63 into the tightening hole 62 of the plate-like cap 6 and the connection hole 210 of the wrench main body 2 and tightening it in the screw hole 51 of the piece-like stopper 5, The internal components are fixed to the storage groove 22 and the mounting groove 23 of the wrench body 2 to complete the entire assembly.

As shown in FIGS. 4 to 9, when using the present invention, first, the lever 52 is moved to switch the rotation direction of the wrench body 2. When the wrench main body 2 is rotated clockwise, the lever 52 is moved clockwise as shown in FIGS. 4 and 5 to move the wrench main body 2 in the direction in which it is desired to rotate. At this time, the interlocking unit 44 is driven by the lever 52 and rotates. The support unit 45 rotates in the interlocking perforation 43 of the passive wheel 4 along with the interlocking unit 44 and simultaneously moves the passive wheel 4 in the mounting groove 23 of the wrench body 2 by the elasticity of the spring 46. As shown in FIG. 5, the passive wheel 4 is pushed out by the elasticity of the spring 46, moves up, and comes into contact with the inner wall surface of the upper portion of the mounting groove 23 of the wrench body 2. Since the second ratchet 42 on the second tooth 40 of the passive wheel 4 and the first ratchet 231 on the inner wall surface of the upper portion of the mounting groove 23 mesh with each other, a space is formed in the lower portion of the mounting groove 23. Subsequently, when the wrench body 2 is rotated clockwise and used, the first teeth 30 of the main driving wheel 3 push the second teeth 40 of the passive wheel 4 in the reverse direction as shown in FIG. The second ratchet 42 of the passive wheel 4 and the wrench body 2 have the same rotation direction and rotate clockwise. The second ratchet 42 of the passive wheel 4 and the first ratchet 231 of the mounting groove 23 are engaged with each other, and the main driving wheel 3 is not rotated by performing a locking and braking function. At this time, a tool (not shown in the figure) connected to the socket 32 of the main driving wheel 3 can proceed with attachment / detachment of a nut or a bolt. As shown in FIG. 6, when the lever 52 is moved clockwise to be positioned downward and the wrench main body 2 is rotated counterclockwise, the main driving wheel 3 presses the passive wheel 4 and enters the lower space of the mounting groove 23. The second tooth 40 of the passive wheel 4 and the first ratchet 231 on the wall surface of the mounting groove 23 are separated. At this time, the passive wheel 4 is driven by the main driving wheel 3 and idles. On the other hand, as shown in FIGS. 4 and 7, when the wrench body 2 is used by rotating it counterclockwise, the lever 52 can be moved up counterclockwise to move the wrench body 2 to the direction in which it is desired to rotate. That's fine. At this time, the interlocking unit 44 is driven by the lever 52 and rotates counterclockwise. The support unit 45 rotates in the interlocking perforation 43 of the passive wheel 4 along with the interlocking unit 44 and simultaneously moves the passive wheel 4 downward in the mounting groove 23 of the wrench body 2 by the elasticity of the spring 46. A space is formed at the top of the. As shown in FIG. 7, the passive wheel 4 moves downward by the elasticity of the spring 46 and abuts against the inner wall surface of the lower portion of the mounting groove 23 of the wrench body 2. Subsequently, when the wrench body 2 is rotated counterclockwise and used, the first teeth 30 of the main driving wheel 3 rotate clockwise and simultaneously the second teeth 40 of the passive wheel 4 rotate counterclockwise. The second ratchet 42 of the passive wheel 4 and the first ratchet 231 below the mounting groove 23 are engaged with each other, and the main driving wheel 3 is not rotated by performing a locking and braking function. At this time, a tool (not shown in the figure) connected to the socket 32 of the main driving wheel 3 can proceed with attachment / detachment of a nut or a bolt. On the other hand, when the lever 52 is moved counterclockwise to be positioned upward and the wrench body 2 is rotated clockwise, the main driving wheel 3 presses the passive wheel 4 and moves it to the upper space of the mounting groove 23, thereby moving the passive wheel. The second ratchet 42 on the fourth second tooth 40 and the first ratchet 231 on the wall surface of the mounting groove 23 are separated. At this time, the passive wheel 4 is driven by the main driving wheel 3 and idles. As described above, the present invention reliably achieves the locking and braking effect by engaging the second ratchet 42 on the second tooth 40 of the passive wheel 4 and the first ratchet 231 on the wall surface of the mounting groove 23 with each other. Therefore, a situation in which braking cannot be performed due to a deviation does not occur. On the other hand, the arc surface 31 is designed for the first tooth 30 of the main driving wheel 3, while the concave arc surface 41 is designed between the second teeth 40 of the passive wheel 4, thereby reducing the contact area between the two. Since the meshing and transmission can be made more stable, the situation where the transmission cannot be reliably performed due to the deviation of the teeth does not occur. On the other hand, as shown in FIGS. 8 and 9, the arc surface 31 is designed on the first tooth 30 of the main driving wheel 3, whereas the depressed arc surface 41 is designed between the second teeth 40 of the passive wheel 4. This makes it possible not only to stabilize the transmission, but also to adjust the socket 32 of the main driving wheel 3 to an arbitrary front and rear angle and adjust the angle at which the tool force is applied according to different space restrictions during work. This is very convenient for work.
As mentioned above, this invention is not limited to the said embodiment at all, In the range which does not deviate from the meaning of invention, it can implement with a various form.

1 ... Ratchet wrench 2 ... Wrench body,
3 ... main driving wheel,
4 ... passive wheel,
5 ... One piece stopper
6 ... Plate cap,
20 ... Working end,
21 ... Recessed surface,
22 .. storage groove,
23: Mounting groove,
30 ... 1st tooth,
31 ... circular arc surface,
32 ... Socket,
40 ... second tooth,
41 ... arc surface,
42 ... the second ratchet,
43 ... interlocking drilling 44 ... interlocking unit,
45 ... support unit,
46 ... Spring,
50 ... hole,
51... Screw hole,
52 ... Lever
53 ... Connection unit,
60 ... through hole 61 ... fixing hole,
62 ... Tightening drilling 63 ... Tightening unit,
210 ... Connection hole 220 ... Communication hole 230 ... Recessed groove,
231 ... 1st ratchet,
440 ... supporting perforation 441 ... protruding fixing unit,
442 ... Projection-like fixing column,
450 ... protruding column,
520: Connection drilling.

Claims (2)

One side has an operating end formed with a recessed surface, and has a storage groove and a mounting groove connected to each other in the recessed surface, and a communication hole communicating with the storage groove on the other side of the operating end. A wrench body having a lever on the outside;
A main driving wheel mounted in the storage groove of the wrench body, formed in a spherical shape, having a plurality of first teeth and a socket, and having an arc surface on an outer wall surface of the first teeth;
A passive wheel having a plurality of second teeth mounted in the mounting groove of the wrench body and meshing with the plurality of first teeth of the main driving wheel;
A plate-shaped cap that covers the recessed surface of the wrench body and has a through-hole through which the socket of the main driving wheel can pass;
The mounting groove of the wrench body has a first ratchet on an inner wall surface,
The passive wheel has a depressed arc surface corresponding to the arc surface of the first tooth of the main driving wheel between the adjacent second teeth,
The second tooth of the passive wheel has a second ratchet that meshes with the first ratchet on the inner wall surface of the mounting groove of the wrench body,
The passive wheel has an interlocking perforation, an interlocking unit mounted in the interlocking perforation, a support unit, and a spring;
The interlocking unit has a support hole, and one end is connected to the lever outside the wrench body, and the other end is fixed to the plate-like cap.
The support unit has a protruding column that is attached to the interlocking unit, enters the interlocking perforation of the passive wheel, and is inserted into the support perforation of the interlocking unit,
The ratchet wrench, wherein the spring covers the protruding column of the support unit and is positioned between the support unit and the interlocking unit. A further tightening unit;
The operating end of the wrench body has a recessed groove formed at a position corresponding to the mounting groove on the other side surface,
The wrench body has a plurality of connection holes for connecting the recessed surface and the recessed groove,
The interlocking unit has a protruding fixing unit at one end and a protruding fixing column at the other end,
The wrench body has a piece-like stopper in the recessed groove,
The piece-like stopper has a hole through which the protruding fixing unit of the interlocking unit can pass, and has a screw hole at a position corresponding to the connection drilling of the wrench body,
The lever is attached to the outer surface of the piece-like stopper, and has a connection hole, and a connection unit disposed in the connection hole,
The connecting unit is connected to the protruding fixing unit of the interlocking unit,
The plate-shaped cap has a fixing hole capable of fixing the protruding fixing column of the interlocking unit, and has a tightening hole corresponding to the connection hole of the wrench body,
2. The tightening unit is inserted into the tightening hole of the plate-shaped cap, the connection hole of the wrench main body, and the screw hole of the piece-like stopper, and tightened. Ratchet wrench.

Images