TWI652147B - Reversing device and ratchet wrench having the same - Google Patents

Abstract

A reversing device adapted to be mounted on a handle unit of a ratchet wrench, the handle unit comprising a head having a chamber, the reversing device comprising a ratchet wheel rotatably mounted to the chamber, And a second tilting unit and a second tilting unit for respectively engaging the ratchet, and a reversing unit for switching the direction of rotation of the ratchet. The reversing unit includes a reversing button rotatably disposed on the head, and a snap ring member disposed on the reversing button and preventing the reversing button from coming off the head, the reversing button The urging portion has a fixing ring groove, the snap ring member is embedded in the fixing ring groove and is limited in the housing, and the pushing portion is used to push the first swaying unit One of the second tilting units is remote from the ratchet.

Description

Reversing device and ratchet wrench having the same

The present invention relates to a hand tool, and more particularly to a reversing device and a ratchet wrench having the same.

Referring to Figures 1, 2 and 4, a conventional ratchet wrench 1 includes a handle body 10, a ratchet 11, two latch units 12, 13, and a switch button 14. The handle body 10 includes a head portion 101 having a receiving slot 100, a handle portion 102 extending rearwardly from the head portion 101, and a bottom plate 103 for closing the receiving slot 100. The bottom plate 103 has a communication. The ratchet 11 is mounted on the head 101 and has a ratchet portion 111 rotatably received in the receiving groove 100, and a ratchet portion Each of the latching units 12 and 13 is mounted on the receiving slot 100 of the head 101 and has a pivoting member. The latching blocks 121, 131 of the portion 101 for engaging with the ratchet portion 111 of the ratchet 11 and a spring are interposed between the latching blocks 121, 131 and the head portion 101 and provide the latching blocks 121, 131. a compression spring 122, 132 having a potential energy that moves toward the ratchet 11, the switch button 14 has a toggle portion 141 exposed to the head portion 101, and a portion extending from the dial portion 141 and penetrating into the receiving slot 100 a cam portion 142 fixed to the head portion 101, the cam portion 142 having two convex surfaces 143, 144 for respectively abutting the latching blocks 121, 131 by a hexagonal snail After the wire 9 passes through the connecting hole 104 and is screwed to the cam portion 142, the switching button 14 can be positioned.

In use, by rotating the toggle portion 141 of the switch button 14, one of the convex surfaces 143 of the cam portion 142 can be abutted against one of the latching blocks 121, and one of the latching blocks 121 can be disengaged from the ratchet 11 The ratchet portion 111 and the other latching block 131 are urged toward the ratchet 11 by the corresponding compression spring 132 and mesh with the ratchet portion 111 of the ratchet 11 at this time, the ratchet 11 can only rotate in the counterclockwise direction On the contrary, referring to FIG. 3, as long as the toggle portion 141 of the switch button 14 is reversely toggled and the other convex surface 144 of the cam portion 142 is abutted against the other latch block 131, the other cassette is caused. The block 131 is disengaged from the ratchet portion 111 of the ratchet 11 and the one of the latching blocks 121 is pushed toward the ratchet 11 by the corresponding compression spring 122, and the one of the blocks 121 and the ratchet portion 111 of the ratchet 11 Engagement, at this time, the ratchet 11 can only be rotated in a clockwise direction, whereby the action of switching the direction of rotation of the ratchet 11 is achieved.

Although the ratchet wrench 1 has the above-described effects, the following problems still exist:

1. Since the hexagonal screw 9 is exposed to the bottom plate 103 of the handle body 10, it is less beautiful.

2. When the toggle button 14 is toggled, the hex screw 9 will rotate simultaneously with the switch button 14. If the hex screw 9 is locked too tightly, the bolt head of the hex screw 9 will be forced to the bottom plate. 103, the switch button 14 can not be rotated, if the hex screw 9 lock is too loose, after a period of time, the hex screw 9 will fall, causing the ratchet wrench 1 to be unusable, the locking force of the hex screw 9 is difficult to control .

3. After a period of use, dust may be stuck or rusted at the joint of the hexagonal screw 9 and the connecting hole 104, causing the switching button 14 to be stuck and unable to be moved.

Accordingly, it is an object of the present invention to provide a reversing device that does not require screwing and that can increase the useful life.

Therefore, the reversing device of the present invention is suitable for a handle unit mounted on a ratchet wrench, the handle unit includes a head having a chamber and a mounting hole, and the reversing device includes a ratchet and a first tilting a unit, a second tilting unit, and a reversing unit.

The ratchet is rotatably mounted to the chamber along an axis, and the first tilting unit includes a first tilting member received in the chamber and pivotally disposed on the head for engaging the ratchet And a first elastic member that is placed in the chamber and is resiliently coupled between the first swaying member and the head, the first elastic member having a potential energy for driving the first damper member to rotate toward the ratchet. The second swaying unit and the first swaying unit are oppositely disposed in a direction parallel to the axis, and the second swaying unit includes a accommodating unit and is pivotally disposed on the head and used a second raking member engaged with the ratchet, and a second elastic member received in the chamber and resiliently abutting between the second raking member and the head, the second elastic member having the second elastic member The potential energy of the second flipper rotating toward the ratchet.

The reversing unit is disposed on the head and is configured to switch a direction in which the ratchet rotates unidirectionally relative to the handle unit, the reversing unit includes a reversing button rotatably disposed on the mounting hole of the head, and a The reversing button is disposed on the reversing button, and the reversing button has a latching portion that is rotatably disposed on the head and exposed to the head. And a pushing portion extending from the mounting hole and extending toward the housing and located between the first tilting unit and the second tilting unit, the pushing portion having a proximity to the toggle a fixing ring groove, the outer diameter of the snap ring member is larger than the diameter of the mounting hole and is embedded in the fixing ring groove and is limited in the housing, the pushing portion is used to push the first rocking member One of the second raking members is away from the ratchet.

Another object of the present invention is to provide a ratchet wrench having a reversing device that is more aesthetically pleasing and has a longer life.

Thus, the ratchet wrench of the present invention having a reversing device comprises a handle unit and a reversing device.

The handle unit includes a head having a chamber and a mounting hole, a grip extending rearward from the head, and a positioning member for closing the chamber.

The reversing device includes a ratchet wheel rotatably mounted to the chamber along an axis, a first tilting unit mounted to the chamber, and a direction opposite to the axis of the first tilting unit And a second tilting unit disposed in the chamber, and a reversing unit disposed on the head and configured to switch a direction in which the ratchet rotates unidirectionally relative to the handle unit. The first tilting unit includes a first tilting member that is received in the chamber and is pivotally disposed on the head and is configured to engage the ratchet, and is received in the chamber and is resiliently coupled thereto. a first elastic member between the first flap and the head, and the first elastic member has a potential energy for driving the first tilting member to rotate toward the ratchet. The second tilting unit includes a second tilting member that is received in the chamber and is pivotally disposed on the head and is configured to engage the ratchet, and is received in the chamber and is resiliently coupled thereto. a second elastic member between the second tilting member and the head, the second elastic member having a potential energy for driving the second tilting member to rotate toward the ratchet. The reversing unit includes a reversing button rotatably disposed on the head and extending toward the positioning member, and a reversing button disposed on the reversing button and preventing the reversing button from coming off the head a snap ring member having a dial portion rotatably disposed on the head portion and exposed to the head portion, and a dial portion passing through the mounting hole and extending toward the chamber and located at the a pushing portion between the first tilting unit and the second tilting unit, the pushing portion having a fixing ring groove adjacent to the dialing portion, the outer diameter of the snap ring member being larger than the diameter of the mounting hole The clip is inserted into the fixing ring groove and is restrained in the chamber, and the pushing portion is configured to push one of the first tilting member and the second tilting member away from the ratchet.

The utility model has the advantages that the outer diameter of the snap ring member is larger than the diameter of the mounting hole and is embedded in the fixing ring groove of the reversing button, so that the reversing button does not come out of the head, therefore, The screw is required to be rotatably positioned on the head of the handle, and the outer shape is more beautiful, and the snap ring member is limited in the chamber, and is not caught or rusted by dust. The problem can increase the service life.

Before the present invention is described in detail, it should be noted that the relative positional terms used in the following description, such as "top and bottom", "front and rear", are based on the user's normal orientation of use of the present invention.

Referring to Figures 5 and 6, an embodiment of a ratchet wrench having a reversing device of the present invention includes a handle unit 2 and a reversing device 3.

Referring to FIG. 6, FIG. 7, and FIG. 8, the handle unit 2 includes a head portion 21, a grip portion 22 extending rearwardly from the head portion 21 in a longitudinal direction L, and a screw lock on the head portion 21. Positioning member 23. The head 21 has a base wall 211, a ring wall 212 extending from the base wall 211 toward the bottom end, and a chamber 213 defined by the base wall 211 and the ring wall 212 and defined toward the bottom end. The base wall 211 has a mounting hole 210, a set of connecting holes 214, and two fixing holes 215. The ring wall 212 has two pivoting slots 216 which are spaced apart and extend to the base wall 211 and have a top end extending into the base wall 211. 217. The positioning member 23 has a positioning recess 231 facing the chamber 213, a through hole 232 communicating with the chamber 213, and two locking holes 233 corresponding to the fixing holes 215, respectively. After being inserted into the fixing holes 215 and then screwed to the locking holes 233, the positioning member 23 can be screwed to the head portion 21 and the chamber 213 is closed. In this embodiment, the positioning groove is 231 is a blind hole.

The reversing device 3 includes a ratchet 4, a first tilting unit 5, a second tilting unit 6, and a reversing unit 7.

The ratchet wheel 4 is rotatably inserted into the sleeve hole 214 along an axis X and is mounted to the chamber 213. The ratchet wheel 4 includes a ratchet portion 41 located in the chamber 213, and a ratchet portion 41 is worn by the ratchet portion 41. The through hole 232 of the positioning member 23 passes through a driving portion 42 to which a tool head (not shown) is mounted.

Referring to FIG. 9 and FIG. 13 , the first tilting unit 5 is mounted on the chamber 213 and includes a spine disposed in the chamber 213 and pivotally disposed on the head 21 for use with the ratchet 4 . a first yoke member 51 that is engaged with the tooth portion 41 and a first elastic member 52 that is received between the first damper member 51 and the ring wall 212 of the head portion 21 The first elastic member 52 has a potential energy for driving the first damper member 51 to rotate toward the ratchet wheel 4.

The second tilting unit 6 and the first tilting unit 5 are oppositely disposed in the chamber 213 in a direction parallel to the axis X. The second tilting unit 6 includes a housing 213 and is accommodated in the chamber 213. a second raking member 61 pivotally disposed on the head portion 21 for engaging with the ratchet wheel 4, and a second accommodating member 213 and a second damper member 61 and the head portion 21 The second elastic member 62 between the annular walls 212 has a potential energy for driving the second pulsating member 61 to rotate toward the ratchet 4.

Referring to FIG. 9 , FIG. 10 and FIG. 11 , the first tilting member 51 has a first pivoting portion 511 pivotally disposed on one of the pivoting slots 216 of the head portion 21 in a direction parallel to the axis X, and a first pivoting portion 511 a first latching portion 512 extending from the first pivoting portion 511 toward the ratchet wheel 4, and a top surface of the first latching portion 512 contacting the base wall 211 of the head portion 21 of the handle unit 2, thereby The first damper 51 can be stably rotated during pivoting. Preferably, the pivot grooves 216, 217 of the ring wall 212 extend in a direction parallel to the axis X. The first latching portion 512 has a first latching surface 513 formed on the side surface for engaging with the ratchet portion 41 of the ratchet 4, and a first recessed surface formed on the top surface adjacent to the base wall 211. The slot 514, preferably, the first latching surface 513 is saw-toothed. In this embodiment, the first elastic member 52 is a compression spring, and two ends of the first elastic member 52 respectively abut against the first latch portion 512 and the ring wall 212 of the head portion 21 .

The second swaying member 61 has a second pivoting portion 611 pivotally disposed on the other pivoting slot 217 of the head portion 21 in a direction parallel to the axis X, and a second pivoting portion 611 extends from the second pivoting portion 611. a second latching portion 612, and a top surface of the second latching portion 611 contacts the base wall 211 of the head portion 21 of the handle unit 2, thereby stabilizing the second tilting member 61 during pivoting Rotate in the ground. The second latching portion 612 has a second latching surface 613 formed on the side surface for engaging with the ratchet portion 41 of the ratchet 4, and a second recessed surface formed on the top surface adjacent to the base wall 211. The slot 614, preferably, the second latching surface 613 is saw-toothed. In this embodiment, the second elastic member 62 is a compression spring, and two ends of the second elastic member 62 respectively abut against the second latch portion 612 and the ring wall 212 of the head portion.

Referring to FIG. 9 , FIG. 10 , and FIG. 12 , the reversing unit 7 is disposed on the head 21 of the handle unit 2 and is used for switching the direction in which the ratchet 4 is unidirectionally rotated relative to the handle unit 2 . a reversing button 71 rotatably disposed on the base wall 211 of the head portion 21 and passing through the mounting hole 210 (see FIG. 8) and extending in the direction of the positioning member 23, and a reversing button disposed on the reversing button 71 and the reversing button 71 does not come out of the snap ring member 72 of the head portion 21.

Referring to FIG. 10, FIG. 12, and FIG. 13, the reversing button 71 has a dialing portion 711 rotatably disposed on the head portion 21 and exposed to the base wall 211 of the head portion 21, and a toggle The portion 711 passes through the mounting hole 210 (see FIG. 8 ) of the head 21 and extends toward the chamber 213 and is located at the pushing portion 712 between the first tilting unit 5 and the second tilting unit 6 . The abutting portion 712 is configured to push the one of the first damper member 51 and the second damper member 61 away from the ratchet wheel 4, and the pushing portion 712 has a full circumference and is adjacent to the urging portion 711 and is provided. The fixing ring groove 713 of the snap ring member 72 is inserted into the locking ring groove 713 opposite to the fixing ring groove 713 and rotatably received in the positioning groove 231 (see FIG. 8), and is formed on the pivoting end 714 a first protrusion 715 and a second protrusion 716 on the two sides of the fixing ring groove 713 and the pivoting end 714, the first protrusion 715 is used to push the first of the first damper 51 The latching surface 513 is away from the ratchet portion 41 of the ratchet 4, and the second bump 716 is used to push the second latching surface 613 of the second tilting member 61 away from the ratchet portion 41 of the ratchet 4.

Referring to FIG. 7, FIG. 8, FIG. 12, the snap ring member 72 is embedded in the fixing ring groove 713 and is restrained in the chamber 213. In the embodiment, the snap ring member 72 is a C. The retaining ring ring 72 has an outer diameter larger than the diameter of the mounting hole 210 and is fitted to the fixing ring groove 713 and abuts against the base wall 211 of the head portion 21, so that the reversing button 71 does not The head 21 is disengaged, and a portion of the snap ring member 72 is received in the first recess 514 and the second recess 614, thereby avoiding the first during the rotation of the reversing button 71. The damper 51, the second damper 61 and the snap ring member 72 interfere with each other. The card is inserted into the fixing ring groove 713 and abuts against the base wall 211 of the head portion 21, and the pivoting end 714 is received in the positioning groove 231, so that the replacement is performed. The two ends of the button 71 are positioned to improve the stability when the reversing button 71 is rotated. In other variations of the embodiment, the pushing portion 712 can also omit the setting of the pivoting end 714. The positioning member 23 cooperates with omitting the arrangement of the positioning recess 231, or has the function of rotatably positioning the reversing button 71 on the head portion 21 of the handle unit 2.

As shown in FIG. 12 and FIG. 13 , the present embodiment is operated, and the toggle portion 711 of the reverse button 71 is rotated until the first protrusion 715 pushes the first tilting member 51 away from the ratchet 4, thereby The ratchet 4 rotates in a counterclockwise direction; as shown in FIG. 14, if the toggle portion 711 of the reverse button 71 is reversely rotated, and the second projection 716 pushes the second tilting member 61 away from the ratchet 4 Thereby, the ratchet 4 is rotated in the clockwise direction, so that the tool head can be driven by the driving portion 42 of the ratchet 4 to achieve the effect of loosening or locking the screw and the nut.

Through the above description, the advantages of the present invention can be summarized as follows:

1. The present invention utilizes the snap ring member 72 to be inserted into the fixing ring groove 713 of the reversing button 71. The reversing button 71 can be rotatably positioned by the screw button 71 without screwing the reversing button 71. The head portion 21 of the handle unit 2 does not come out of the head portion 21, and is aesthetically pleasing.

2. The present invention does not require the use of screws to fix the reversing button 71, so there is no problem in that it is difficult to control the screw locking force.

3. Since the present invention does not need to fix the reversing button 71 by screws, and the snap ring member 72 is located in the chamber 213, there is no problem that it cannot be rotated by dust or rust, and therefore, Increase the service life.

The pivoting end 714 of the pushing portion 712 of the reversing button 71 is received in the positioning recess 231, and the snap ring member 72 is embedded in the fixing ring groove 713 and abuts against the handle unit. The head 21 of 2 allows both ends of the reversing knob 71 to be positioned, so that the stability when the reversing knob 71 is rotated can be improved.

5. The top surface of the first latching portion 512 is designed by extending the pivoting holes 216, 217 of the head portion 21 of the handle unit 2 to the base wall 211 and extending the top end into the base wall 211. The top surface of the second latching portion 612 is in contact with the base wall 211 of the head portion 21, so that the first tilting member 51 and the second tilting member 61 can be stably rotated during pivoting.

The first damper 51 and the second damper 61 of the second latching portion 612 can be prevented from being disposed by the first recessed portion 514 of the first latching portion 512 and the second latching member 612. Interference occurs with the snap ring member 72 during pivoting, and therefore, smoothness in switching the direction of rotation of the ratchet 4 can be improved.

However, the above is only the embodiment of the present invention, and the scope of the invention is not limited thereto, and all the simple equivalent changes and modifications according to the scope of the patent application and the patent specification of the present invention are still Within the scope of the invention patent.

2‧‧‧Hand unit

21‧‧‧ head

210‧‧‧Mounting holes

211‧‧‧ base wall

212‧‧‧Circle

213‧‧ ‧ room

214‧‧‧ sockets

215‧‧‧Fixed holes

216‧‧‧ pivot slot

217‧‧‧ pivot slot

22‧‧‧ grip

23‧‧‧ Positioning parts

231‧‧‧ positioning groove

232‧‧‧through hole

233‧‧‧Lock hole

3‧‧‧Reversing device

4‧‧‧ratchet

41‧‧‧ ratchet

42‧‧‧ Drive Department

5‧‧‧First turbulence unit

51‧‧‧First moving piece

511‧‧‧First pivotal

512‧‧‧First Card Department

513‧‧‧ first card face

514‧‧‧First slot

52‧‧‧First elastic parts

6‧‧‧Second turbulence unit

61‧‧‧Second turret

611‧‧‧Second pivotal

612‧‧‧Second Card Department

613‧‧‧ Second card face

614‧‧‧Second inlay

62‧‧‧Second elastic parts

7‧‧‧Commutation unit

71‧‧‧Reversing button

711‧‧‧The Ministry of Movement

712‧‧‧Pushing Department

713‧‧‧Fixed ring groove

714‧‧‧ pivot end

715‧‧‧First bump

716‧‧‧second bump

72‧‧‧Inch ring parts

X‧‧‧ axis

L‧‧‧ Length direction

Other features and effects of the present invention will be apparent from the following description of the drawings, wherein: Figure 1 is a perspective view of a conventional ratchet wrench; Figure 2 is a schematic view of the operation of the prior art ratchet wrench Rotating a switch button and disengaging one of the latches from a ratchet, and the other latching block is engaged with the ratchet; FIG. 3 is another schematic diagram of the operation of the conventional ratchet wrench, illustrating the reverse rotation of the switch knob and The other latching block is disengaged from the ratchet, and one of the latching blocks is engaged with the ratchet; FIG. 4 is a partial cross-sectional view of the conventional ratcheting wrench, illustrating a hexagonal screw passing through a bottom plate and then being screwed to the switch Figure 5 is a perspective view of an embodiment of a ratchet wrench having a reversing device of the present invention; Figure 6 is a view similar to Figure 5, but viewed from another angle; Figure 7 is an incomplete exploded view A reversing device of the embodiment is mounted on a handle unit; FIG. 8 is an incomplete cross-sectional view illustrating a snap ring of the reversing device being embedded in a fixed ring groove of a reversing button Make this The button is rotatably fixed to the handle unit; FIG. 9 is an incomplete perspective assembly view of the embodiment, and a positioning member of the handle unit is omitted; FIG. 10 is an incomplete perspective view illustrating A first tilting member, a second tilting member, and a reversing unit of the reversing device are mounted on the handle unit; FIG. 11 is the first tilting member and the second tilting member FIG. 12 is an incomplete perspective view illustrating the first swaying member, the second swaying member, and a combination relationship between the directional member and the locating member; FIG. 13 is a view of the embodiment The operation diagram illustrates that the reversing button is rotated and the first swaying member is disengaged from a ratchet, and the second swaying member is engaged with the ratchet; and FIG. 14 is another operation diagram of the embodiment, illustrating the reverse rotation The reversing button disengages the second raking member from the ratchet and the first raking member engages the ratchet.

Claims (10)

A reversing device adapted to be mounted on a handle unit of a ratchet wrench, the handle unit comprising a head having a chamber and a mounting hole, the reversing device comprising: a ratchet wheel rotatably mounted along an axis The first swaying unit includes a first swaying member that is disposed in the accommodating chamber and is pivotally disposed on the head and is configured to engage the ratchet, and is received in the chamber And engaging a first elastic member between the first swaying member and the head, the first elastic member having a potential energy for driving the first swaying member to rotate toward the ratchet, the first swaying member having a pivot a first pivoting portion disposed on the head, and a first latching portion extending from the first pivoting portion toward the ratchet, the first latching portion having a first recess formed on the top surface a slot, the two ends of the first elastic member respectively respectively abut the first latch portion and the head portion; a second tilting unit is oppositely disposed with the first tilting unit in a direction parallel to the axis The second tilting unit includes a housing that is pivotally disposed on the head and is adapted to be engaged with the ratchet a second sliding member, and a second elastic member received in the chamber and slidably between the second swaying member and the head, the second elastic member having the second urging member driving The second rocking member has a second pivoting portion pivoted to the head, and a second latching portion extending from the second pivoting portion toward the ratchet wheel. The second latching portion has a second recessed groove formed on the top surface, the two ends of the second elastic member respectively abut against the second latching portion and the head; and a reversing unit disposed on the head And used to switch the ratchet relative to a direction in which the handle unit is unidirectionally rotated, the reversing unit includes a reversing button rotatably disposed on the mounting hole of the head, and a reversing button is disposed on the reversing button so that the reversing button does not come out a snap ring member of the head, the switch button has a dial portion rotatably disposed on the head portion and exposed to the head portion, and a dial portion passes through the mounting hole and faces the chamber a pushing portion extending between the first tilting unit and the second tilting unit, the pushing portion having a fixing ring groove adjacent to the dialing portion, the outer diameter of the snap ring member being larger than the mounting An aperture of the hole is embedded in the fixing ring slot and is constrained in the housing, and a part of the snap ring member is received in the first slot and the second slot, and the pushing portion is used to push the first hole One of the ram and the second raking member is remote from the ratchet. The reversing device of claim 1, wherein the handle unit further comprises a positioning member for closing the chamber, the positioning member has a positioning groove facing the chamber, and the engaging ring member is inserted into the card. The pushing ring has a pivoting end that is opposite to the fixing ring groove and rotatably received in the positioning groove. The reversing device of claim 1, wherein the pushing portion further has a first protrusion formed on both sides, and a second protrusion, the first protrusion is used to push the first tilting The piece is away from the ratchet, and the second protrusion is used to push the second swaying member away from the ratchet. The reversing device of claim 1, wherein the first latching portion further has a first latching surface formed on the side for engaging the ratchet, the second latching portion further having a side formed on the side And a second card face for engaging the ratchet. A ratchet wrench with a reversing device, comprising: a handle unit comprising a head having a chamber and a mounting hole, a grip extending rearward from the head, and a cover for closing the chamber And a reversing device comprising: a ratchet wheel rotatably mounted to the chamber along an axis; a first tilting unit mounted to the chamber; and a first tilting unit parallel to the first tilting unit a second tilting unit disposed opposite to the chamber in a direction of the axis, and a commutating unit disposed on the head and configured to switch a direction in which the ratchet rotates unidirectionally relative to the handle unit, the first turn The moving unit includes a first tilting member that is disposed in the chamber and is pivotally disposed on the head and is configured to engage the ratchet, and is received in the chamber and is biased against the first tilting a first elastic member between the member and the head, and the first elastic member has a potential energy for driving the first tilting member to rotate toward the ratchet, the second tilting unit includes a housing and a hub a second raking member disposed on the head and configured to engage the ratchet, and a housing And a second elastic member that is elastically coupled between the second swaying member and the head, the second elastic member having a potential energy for driving the second damper member to rotate toward the ratchet, the reversing unit including a rotatable unit a reversing button disposed on the head and extending in a direction of the positioning member, and a reversing button disposed on the reversing button and preventing the reversing button from coming off the head Having a toggle portion rotatably disposed on the head portion and exposed to the head portion, and a first moving unit and the first portion of the dialing portion extending through the mounting hole and extending toward the housing a pushing portion between the two tilting units, the pushing portion having a fixing ring groove adjacent to the sliding portion, the outer diameter of the engaging ring member being larger than the diameter of the mounting hole and being embedded in the solid a ring groove and is constrained in the chamber, the pushing portion is configured to push one of the first rocking member and the second rocking member away from the ratchet wheel, wherein the first rocking member has a pivot a first pivoting portion disposed on the head, and a first latching portion extending from the first pivoting portion toward the ratchet, the first latching portion having a first recess formed on the top surface a slot, the two ends of the first elastic member respectively abut the first latch portion and the head portion, the second tilting member has a second pivoting portion pivoted on the head portion, and a a second latching portion extending toward the ratchet wheel, the second latching portion having a second recessed groove formed on the top surface, the two ends of the second elastic member respectively engaging the first latching portion The second latch portion and the head portion are partially received by the first snap groove and the second recessed groove. The ratchet wrench of claim 5, wherein the positioning member has a positioning groove facing the chamber, the snap ring member is embedded in the fixing ring groove and abuts against the head, the pushing portion There is also a pivoting end that is opposite to the fixing ring groove and rotatably received in the positioning groove. The ratchet wrench of claim 6, wherein the pushing portion further has a first protrusion and a second protrusion formed on the two sides and located between the fixing ring groove and the pivoting end, the first The protrusion is used to push the first swaying member away from the ratchet, and the second protrusion is used to push the second swaying member away from the ratchet. The ratchet wrench of claim 7, wherein the snap ring member is a C-shaped clasp. The ratchet wrench of claim 5, wherein the first latch portion further has a first latching surface formed on the side for engaging the ratchet, the second latching portion further having a side formed on the side And a second for engaging the ratchet Card face. The ratchet wrench of claim 5, wherein the head of the handle unit has a base wall and a ring wall extending outwardly from the base wall, the base wall surrounding the ring wall defining the chamber, The ring wall has two spaced apart slots extending in a direction parallel to the axis to the base wall and a top end extending into the base wall, and the first pivoting portion of the first tilting member is pivoted to one of the pivot slots The second pivoting portion of the second swaying member is pivotally disposed on the other pivoting slot.