CN109571335B

CN109571335B - Ratchet wheel adjustable wrench

Info

Publication number: CN109571335B
Application number: CN201710905794.XA
Authority: CN
Inventors: 廖鸿奖
Original assignee: Individual
Current assignee: Individual
Priority date: 2017-09-29
Filing date: 2017-09-29
Publication date: 2020-05-29
Anticipated expiration: 2037-09-29
Also published as: CN109571335A

Abstract

The invention provides a ratchet adjustable wrench, which comprises: the wrench comprises a wrench body, a ratchet wheel, a positioning piece and a moving piece, wherein the wrench body is provided with a rotating axis, the inner periphery of the ratchet wheel is provided with a fixed clamping part, the positioning piece is arranged on the ratchet wheel, the moving piece is arranged on the inner periphery of the ratchet wheel and movably connected with the positioning piece, the moving piece is provided with a movable clamping part, a tool groove is formed between the movable clamping part and the fixed clamping part to sleeve a workpiece, and the size of the tool groove is adjusted by controlling the moving piece. Therefore, the present invention can be used with workpieces of different sizes, and the practicability of the present invention is increased.

Description

Ratchet wheel adjustable wrench

Technical Field

The present invention relates to a ratchet wrench structure, and more particularly to a ratchet wrench capable of adjusting to different sizes of workpieces.

Background

The general ratchet wrench is provided with a grab handle and a head part, wherein the head part is provided with a hollow operating part, when in operation, the hollow operating part of the head part is sleeved on a screw fastener, and the grab handle is wrenched to rotate the head part, so that the screw fastener can be rotationally locked or loosened; since the hollow operation portion has a fixed size and can only be used for screws with corresponding sizes, when screws with different sizes are to be locked or loosened, a ratchet wrench with corresponding sizes is required, which causes inconvenience in use.

To solve the above problem, U.S. Pat. No. 4838132 discloses an adjustable twisting tool, in which a hollow operation part of a head part has an adjusting screw rod, an end of the adjusting screw rod can abut against a screw member to be rotated, and the size of the hollow operation part is changed by operating the protruding state of the adjusting screw rod.

However, the above-mentioned twisting tool has no ratchet structure, and the operation angle is easily limited when in use in a limited operation space, and after each rotation operation, the tool needs to be returned to the original position to obtain the next operation space, so that the effect of quick locking or releasing cannot be achieved, and the operation is troublesome.

Disclosure of Invention

In order to solve the above technical problems, the present invention provides a ratchet wheel adjustable wrench, wherein a movable member is movably connected to a positioning member, the movable member is moved relative to the positioning member when a workpiece is fitted in a tool slot, so as to adjust the size of the tool slot in accordance with the size of the workpiece, and the workpiece is locked or loosened by rotating the ratchet wheel after the size is adjusted, thereby being used in accordance with workpieces of different sizes, and having the effect of quick screw locking or loosening without space limitation, thereby increasing the practicability of the present invention.

One embodiment of the present invention provides a ratchet adjustable wrench, comprising: the wrench comprises a wrench body, a handle and a handle, wherein the wrench body is provided with a head part and a handle part, the head part is provided with a first containing groove and a second containing groove, the first containing groove is communicated with the second containing groove, and the first containing groove is provided with a rotating axis; a ratchet wheel, which is rotatably arranged in the first containing groove along the rotation axis, the outer periphery of the ratchet wheel is annularly provided with a plurality of ratchets, and the inner periphery of the ratchet wheel is provided with a fixed clamping part; a ratchet wheel device which is arranged in the second containing groove and is used for meshing all the ratchets; a positioning member connected to the ratchet; the movable part is arranged on the inner periphery of the ratchet wheel and movably connected with the positioning part, the movable part can move among a first state, a second state and a third state, the movable part is provided with a movable clamping part, a tool groove is formed between the movable clamping part and the fixed clamping part to provide workpiece nesting, and the movable part and the positioning part are mutually clamped and fixed in the first state; when the movable piece is in the second state, the movable piece moves along the direction parallel to the rotation axis; in the third state, the movable member slides along the direction perpendicular to the rotation axis to adjust the size of the tool slot.

In one embodiment, the positioning member is disposed at an inner periphery of the ratchet wheel, the positioning member has a first engaging portion facing the rotation axis, the movable member has a second engaging portion corresponding to the first engaging portion, and the second engaging portion and the first engaging portion are engaged with each other in the first state.

In one embodiment, the movable member is further provided with a reset device, which is arranged between the movable member and the ratchet wheel, and the reset device enables the movable member to move from the second state to the first state.

In one embodiment, the first and second engaging portions are rack-shaped, the first engaging portion and the second engaging portion are engaged with each other, the first engaging portion is disposed along a radial direction of the rotation axis, the second engaging portion is disposed along the radial direction of the rotation axis, and the tooth section of the first engaging portion is longer than the tooth section of the second engaging portion.

In one embodiment, the first engaging portion has a plurality of first engaging teeth and a plurality of second engaging teeth, and the pitch of each first engaging tooth is greater than the pitch of each second engaging tooth.

In one embodiment, the first clamping portions are two, the second clamping portions are two, the two first clamping portions are respectively arranged in parallel and at intervals relative to the rotation axis, the two second clamping portions are respectively arranged in parallel and at intervals relative to the rotation axis, and in the second state, the two second clamping portions and the two first clamping portions are staggered and not meshed; in the third state, one of the second clamping parts is slidably arranged between the two first clamping parts.

In one embodiment, the ratchet wheel has a receiving slot for receiving the positioning element, the ratchet wheel has a mounting surface at one end thereof facing the rotation axis, the mounting surface is connected to a stopper, a pushing portion of the movable element protrudes out of the stopper, the positioning element is disposed between the stopper and the ratchet wheel, the stopper and the positioning element are engaged with each other, a protrusion is protruded from a side surface of the positioning element parallel to the mounting surface, a groove is recessed from a side surface of the stopper facing the mounting surface, and the protrusion and the groove are engaged with each other.

In one embodiment, an installation surface is disposed at an end of the ratchet wheel facing the rotation axis, the positioning member is disposed on the installation surface, a first locking portion is disposed at a side surface of the positioning member facing the installation surface, the movable member is disposed with a second locking portion corresponding to the first locking portion, and the second locking portion and the first locking portion are locked to each other in the first state.

In one embodiment, the sliding sleeve is movably disposed on the inner periphery of the ratchet and sleeved on the movable member, the reset device is disposed between the sliding sleeve and the movable member, and in the third state, the movable member drives the sliding sleeve to slide along a direction perpendicular to the rotation axis.

In another embodiment of the present invention, a ratchet adjustable wrench is provided, which comprises: the wrench comprises a wrench body, a handle and a handle, wherein the wrench body is provided with a head part and a handle part, the head part is provided with a first containing groove and a second containing groove, the first containing groove is communicated with the second containing groove, and the first containing groove is provided with a rotating axis; a ratchet wheel which is rotationally arranged in the first containing groove along the rotation axis, a plurality of ratchets are annularly arranged on the outer periphery of the ratchet wheel, and a fixed clamping part is arranged on the inner periphery of the ratchet wheel; the ratchet wheel device is arranged in the second accommodating groove and meshed with the ratchets; two positioning pieces respectively connected to the ratchet wheel; the movable part is arranged on the inner periphery of the ratchet wheel and movably arranged between the two positioning pieces, the movable part can move among a first state, a second state and a third state, the movable part is provided with a movable clamping part, a tool groove is formed between the movable clamping part and the fixed clamping part to provide workpiece nesting, and the movable part and the two positioning pieces are mutually clamped and fixed in the first state; when the movable piece is in the second state, the movable piece moves along the direction parallel to the rotation axis; when the tool is in the third state, the movable piece slides along the direction vertical to the rotation axis so as to adjust the size of the tool groove; and a reset device arranged between the moving part and the ratchet wheel, wherein the reset device enables the moving part to move from the second state to the first state.

In one embodiment, the two positioning members are disposed on two sides of the inner periphery of the ratchet wheel, the two positioning members are respectively and transversely provided with a first locking portion, each first locking portion faces the rotation axis, the movable member is respectively provided with a second locking portion corresponding to each first locking portion, each first locking portion is arranged along the radial direction of the rotation axis, each second locking portion is arranged along the radial direction of the rotation axis, and the radial length of each first locking portion relative to the rotation axis is greater than the radial length of each second locking portion relative to the rotation axis.

In one embodiment, each positioning member has two first engaging portions, the two first engaging portions of each positioning member are respectively disposed in parallel and spaced relation to the rotation axis, and each second engaging portion is slidably disposed between the two first engaging portions of each positioning member at the movable position.

In one embodiment, each of the first engaging portions has a plurality of first engaging teeth and a plurality of second engaging teeth, and the pitch of each of the first engaging teeth is greater than the pitch of each of the second engaging teeth.

In one embodiment, the ratchet wheel has two receiving slots for the two positioning members to be assembled, the end of the ratchet wheel facing the rotation axis has an installation surface connected to the two blocking members, a pushing portion of the movable member is protruded between the two blocking members, and the two blocking members and the two positioning members are respectively fastened.

In one embodiment, an installation surface is disposed at one end of the ratchet wheel facing the rotation axis, the two positioning members are respectively fixed on the installation surface, first locking portions are respectively disposed on one side surfaces of the two positioning members facing the installation surface, the movable member is respectively disposed with a second locking portion corresponding to each first locking portion, each first locking portion is disposed along the radial direction of the rotation axis, each second locking portion is disposed along the radial direction of the rotation axis, and the radial length of each first locking portion relative to the rotation axis is greater than the radial length of each second locking portion relative to the rotation axis.

By means of the technical effects, the movable part is movably connected with the positioning part, when a workpiece is sleeved in the tool groove, the movable part moves relative to the positioning part to adjust the size of the tool groove in accordance with the size of the workpiece, the handle part can be turned after adjustment, and the workpiece is locked or loosened, so that the inconvenience that a known ratchet wrench is only suitable for single size is improved, the operation effect of quick screw locking or loosening can be achieved, and the practicability and convenience of the ratchet wrench are further improved.

Furthermore, the pitch of each first latch is larger than the pitch of each second latch, so as to adjust the size of the workpiece in metric and imperial systems, thereby increasing the application range of the present invention.

Drawings

FIG. 1 is a schematic diagram illustrating a first embodiment of the present invention.

FIG. 2 is an exploded view of the first embodiment of the present invention.

Fig. 3 is a sectional perspective view (i) of the first embodiment of the present invention, showing the movable member in the first state.

FIG. 4 is a sectional front view of the first embodiment of the present invention showing the movable member in the first state.

Fig. 5 is a sectional perspective view (ii) of the first embodiment of the present invention, showing the movable member in the second state.

FIG. 6 is a sectional front view of the first embodiment of the present invention showing the movable member in the second state.

FIG. 7 is an operational view of the first embodiment of the present invention, showing the adjustment of the tool slot size to fit different sized workpieces.

FIG. 8 is an exploded view of a second embodiment of the present invention.

Fig. 9 is a partially sectioned perspective view (a) of the second embodiment of the present invention, showing the movable member in the first state.

Fig. 10 is a partially sectioned perspective view (iii) of the second embodiment of the present invention, showing the movable member in the third state.

Description of the reference numerals

The wrench comprises a workpiece 1, a handle 2, a wrench body 10, a first body 10a, a second body 10b, a head 11, a handle 12, a first accommodating groove 13, a second accommodating groove 14, a ratchet 20, an installation surface 21, a sleeving surface 22, a bottom 221, a ratchet 23, a fixed clamping part 24, an accommodating groove 25, a ratchet device 30, a positioning piece 40, a first clamping part 41, a first latch 411, a second latch 412, a bump 42, a stopper 50, a groove 51, a movable piece 60, a movable clamping part 61, a second clamping part 62, a pushing part 63, an accommodating groove 64, a tool groove 70, a reset device 80, an elastic piece 81, an anti-falling sleeve 82, a sliding sleeve 90, a first surface 91, an accommodating groove 911, a second surface 92, a contact part 921 and a rotation axis L.

Detailed Description

To facilitate the explanation of the present invention, the central idea shown in the above summary is expressed in terms of specific embodiments. Various objects in the embodiments are depicted in terms of scale, dimensions, amounts of distortion or displacement suitable for illustration, rather than in terms of actual components, and are described in detail herein.

Referring to fig. 1 to 7, in a first embodiment of the present invention, a ratchet monkey wrench is provided, which includes:

a wrench body 10 having a head 11 and a handle 12, the handle 12 being connected to a handle 2, wherein in the present embodiment, the wrench body 10 has a first body 10a and a second body 10b, an inner side of the first body 10a and an inner side of the second body 10b face each other; the inner side surfaces of the head 11 of the first body 10a and the second body 10b are respectively provided with a first containing groove 13 and a second containing groove 14 in a penetrating manner, the second containing groove 14 is close to the handle 12, the first containing groove 13 is communicated with the second containing groove 14, wherein the first containing groove 13 is provided with a rotation axis L.

A ratchet 20 rotatably disposed in the first receiving groove 13 along the rotation axis L, wherein two ends of the ratchet 20 facing the rotation axis L are respectively provided with a mounting surface 21 and a sleeving surface 22, the inner side of the first body 10a and the inner side of the second body 10b are respectively assembled to the mounting surface 21 and the sleeving surface 22, so that the ratchet 20 is disposed between the first body 10a and the second body 10b, wherein a plurality of ratchets 23 are disposed around the ratchet 20, and a fixing clamp 24 is disposed around the ratchet 20.

A ratchet device 30 assembled in the second receiving groove 14 for engaging each ratchet 23, wherein when the handle 2 is turned, each ratchet 23 of the ratchet 20 and the ratchet device 30 can be engaged with each other to rotate the ratchet 20, wherein in this embodiment, the ratchet device 30 can change the rotation direction of the ratchet 20.

A retainer 40 disposed on the inner periphery of the ratchet 20. A first engaging portion 41 is disposed on one side of the positioning member 40, the first engaging portion 41 faces the rotation axis L, the first engaging portion 41 is disposed along the radial direction of the rotation axis L, wherein the first engaging portion 41 is rack-shaped, the first engaging portion 41 has a plurality of engaging teeth, and the tooth pitch of the engaging teeth can be equal or unequal; in an embodiment of the present invention, the latch is divided into a first latch 411 and a second latch 412, and a pitch of each first latch 411 is greater than a pitch of each second latch 412.

Furthermore, the positioning element 40 can be integrally formed with the ratchet 20 or assembled to the inner periphery of the ratchet 20, wherein when the positioning element 40 is assembled to the ratchet 20, the ratchet 20 is provided with an accommodating groove 25, the accommodating groove 25 is disposed parallel to the rotation axis L, the accommodating groove 25 provides for the assembly of the positioning element 40, the positioning element 40 and the accommodating groove 25 are mutually fastened, and the mounting surface 21 of the ratchet 20 is connected to a stopper 50, so that the positioning element 40 is disposed between the stopper 50 and the ratchet 20. A protrusion 42 is disposed adjacent to and parallel to a side of the mounting surface 21, a recess 51 is recessed from a side of the stopper 50 facing the mounting surface 21, and the protrusion 42 and the recess 51 are engaged with each other to limit the positioning element 40 to be fixed in the receiving slot 25.

The movable member 60 is disposed on the inner periphery of the ratchet 20 and movably connected to the positioning member 40, and the movable member 60 can move between a first state, a second state and a third state. The movable member 60 has a movable clamping portion 61, the movable clamping portion 61 is in a V shape, and the movable clamping portion 61 and the fixed clamping portion 24 correspond to each other and form a tool slot 70 therebetween to provide a nesting of the workpiece 1. The movable member 60 is provided with a second engaging portion 62 corresponding to the first engaging portion 41, the second engaging portion 62 is disposed along the radial direction of the rotation axis L, wherein the second engaging portion 62 is rack-shaped, the second engaging portion 62 and the first engaging portion 41 can be engaged with each other, and the tooth section of the first engaging portion 41 is longer than the tooth section of the second engaging portion 62. Furthermore, a side surface of the movable element 60 is provided with a pushing portion 63, and the pushing portion 63 is higher than the stopper 50 and protrudes out of the outer side surface of the first body 10a through the first accommodating groove 13.

Furthermore, a concave groove 64 is formed on a side surface of the moving element 60 facing the sleeving surface 22, a reset device 80 is disposed in the groove 64, the reset device 80 is disposed between the moving element 60 and the ratchet 20, wherein the reset device 80 has an elastic member 81 and a disengagement-preventing sleeve 82, two ends of the elastic member 81 are respectively abutted between the groove 64 and the disengagement-preventing sleeve 82, the disengagement-preventing sleeve 82 is disposed at an opening of the groove 64, the disengagement-preventing sleeve 82 is used for preventing the elastic member 81 from disengaging from the groove 64, and the disengagement-preventing sleeve 82 can move relative to the groove 64 along with the tension of the elastic member 81.

In the first state, the movable member 60 and the positioning member 40 are clamped to each other, and in this embodiment, the second clamping portion 62 of the second clamping portion 62 is engaged with the first clamping portion 41 of the first clamping portion 41, so that the movable member 60 and the positioning member 40 are clamped to each other, as shown in fig. 3 and fig. 4.

In the second state, the movable element 60 can move relative to the positioning element 40 along a direction parallel to the rotation axis L, in this embodiment, when an operator applies a force to the pushing portion 63 along a direction parallel to the rotation axis L, the movable element 60 can move along the force applying direction, so that the second locking portion 62 and the first locking portion 41 are no longer fastened to each other; when the external force applied to the pushing portion 63 by the operator is removed, the elastic element 81 of the resetting device 80 automatically moves the movable element 60 from the second state to the first state, as shown in fig. 5 and 6.

In the third state, the movable element 60 can slide relative to the positioning element 40 along a direction perpendicular to the rotation axis L to adjust the size of the tool slot 70, in this embodiment, after the operator moves the movable element 60 to the second state, the operator applies a force to the pushing portion 63 along the direction perpendicular to the rotation axis L, so that the movable element 60 moves along the force applying direction, and the second locking portion 62 is slidably disposed on one side of the first locking portion 41 to adjust the size of the tool slot 70, as shown in fig. 2 and fig. 7.

Therefore, when an operator wants to lock or release the workpiece 1, the tool slot 70 is sleeved on the workpiece 1 by the sleeving surface 22, so that one side of the workpiece 1 is pressed against the fixed clamping portion 24, if the size of the tool slot 70 is not matched with the size of the workpiece 1, the operator can apply force to the pushing portion 63 in a direction parallel to the rotation axis L, so that the movable member 60 is changed from the first state to the second state; then, the operator applies a force to the pushing portion 63 in a direction perpendicular to the rotation axis L to change the movable member 60 to the third state, so as to change the size of the tool slot 70, and to match the size of the workpiece 1, so that the workpiece 1 is clamped by the fixed clamping portion 24 and the movable clamping portion 61; then, the handle 2 is turned to rotate the ratchet 20 for locking or releasing the workpiece 1.

Therefore, the movable member 60 and the positioning member 40 are movably connected to move to adjust the size of the tool slot 70 according to the size of the workpiece 1, and the ratchet 20 is rotated to lock or release the workpiece 1 after the size is adjusted, so as to be used together with workpieces 1 of different sizes, and have the operation of quick screwing or releasing, thereby increasing the practicability and convenience of the present invention.

In addition, the pitch of each first latch 411 of the positioning member 40 is different from the pitch of each second latch 412, and when the specification of the workpiece 1 to be screwed or unscrewed is made of english, the size of the workpiece 1 can be adjusted in accordance with english, so that the present invention can be applied to size adjustment of metric and english workpieces 1, thereby increasing the application range of the present invention.

In another embodiment, the ratchet 20 has two positioning members 40, the two positioning members 40 are respectively disposed on two sides of the inner periphery of the ratchet 20, the movable member 60 is movably disposed between the two positioning members 40, the movable member 60 has two second locking portions 62 respectively corresponding to two sides of the two positioning members 40, wherein the first locking portion 41 of each positioning member 40 has two first locking portions 41, and the two first locking portions 41 are disposed at intervals and are radially parallel to the rotation axis L; each second engaging portion 62 is provided with two second engaging portions 62, and the two second engaging portions 62 are spaced apart from each other and are radially arranged with respect to the rotation axis L. In the second state, the two second engaging portions 62 of each second engaging portion 62 are alternatively disengaged from the two first engaging portions 41 of each first engaging portion 41; in the third state, one of the second engaging portions 62 is slidably disposed between the two first engaging portions 41.

In addition, when the positioning element 40 is assembled on the ratchet 20, the ratchet 20 is provided with two receiving slots 25, each receiving slot 25 is provided with one positioning element 40, wherein the mounting surface 21 of the ratchet 20 is connected with the two stoppers 50, the two positioning elements 40 are arranged between the two stoppers 50 and the ratchet 20, the grooves 51 of the two stoppers 50 are respectively and concavely clamped with the protrusions 42 of the two positioning elements 40, and the pushing portion 63 of the moving element 60 is convexly arranged between the two stoppers 50.

Referring to fig. 8 to 10, a ratchet wrench according to a second embodiment of the present invention is shown, and the same parts as those of the first embodiment are given the same reference numerals and the repeated description is omitted, and the following description is different from the first embodiment.

The positioning member 40 is locked on the mounting surface 21, and a first locking portion 41 is disposed on a side surface of the positioning member 40 facing the mounting surface 21.

A sliding sleeve 90 movably disposed on the inner periphery of the ratchet 20, wherein two ends of the sliding sleeve 90 facing the rotation axis L are respectively provided with a first surface 91 and a second surface 92, the first surface 91 faces the mounting surface 21 correspondingly, the second surface 92 faces the mounting surface 22 correspondingly, the first surface 91 is concavely provided with an accommodating groove 911, the second surface 92 is concavely provided with a contact portion 921, the mounting surface 22 is convexly provided with a bottom 221 facing the inner periphery of the ratchet 20, and the contact portion 921 is in sliding contact with the bottom 221.

Furthermore, the restoring device 80 is disposed between the movable member 60 and the sliding sleeve 90, in this embodiment, the restoring device 80 is a spring, two ends of the restoring device 80 are respectively abutted between the accommodating groove 64 and the sliding sleeve 90, and the restoring device 80 can keep the contact portion 921 in surface contact with the bottom 221.

In addition, in another embodiment, the ratchet 20 has two positioning members 40, the two positioning members 40 are respectively disposed on two sides of the installation surface 21, the movable member 60 is movably disposed between the two positioning members 40, the movable member 60 has a second locking portion 62 corresponding to two first locking portions 41 of the two positioning members 40, the movable member 60 has two receiving slots 64 corresponding to two sides of the two positioning members 40, and each receiving slot 64 has a reset device 80.

In the first state, the elastic tension of the reset device 80 makes the second engaging portion 62 of the movable member 60 and the first engaging portion 41 of the positioning member 40 keep engaging and locking along the axial direction of the rotation axis L, as shown in fig. 9.

In the second state, the movable element 60 can move along the direction parallel to the rotation axis L, in this embodiment, when an operator applies a force to the pushing portion 63 along the direction parallel to the rotation axis L, the movable element 60 can move along the force applying direction, so that the second locking portion 62 and the first locking portion 41 are no longer engaged and locked with each other; when the external force applied to the pushing portion 63 by the operator is removed, the elastic tension of the resetting device 80 automatically restores the movable element 60 from the second state to the first state.

In the third state, the movable member 60 can slide along the direction perpendicular to the rotation axis L to adjust the size of the tool groove 70, in this embodiment, after the operator moves the movable member 60 to the second state, the operator applies a force to the pushing portion 63 along the direction perpendicular to the rotation axis L to adjust the size of the tool groove 70, wherein the movable member 60 moves while driving the sliding sleeve 90 to move along the force applying direction, and the contact portion 921 of the sliding sleeve 90 is in sliding contact with the bottom portion 221, thereby increasing the strength of the movable member 60 and preventing the movable member 60 from being damaged by the external force, as shown in fig. 8 and 10.

The above examples are provided only for illustrating the present invention and are not intended to limit the scope of the present invention. It is intended to claim all such modifications and variations as fall within the true spirit of the invention.

Claims

1. A ratchet adjustable wrench, comprising:

the wrench comprises a wrench body, a handle and a handle, wherein the wrench body is provided with a head part and a handle part, the head part is provided with a first containing groove and a second containing groove, the first containing groove is communicated with the second containing groove, and the first containing groove is provided with a rotating axis;

a ratchet wheel, which is rotatably arranged in the first containing groove along the rotating axis, the outer periphery of the ratchet wheel is annularly provided with a plurality of ratchets, and the inner periphery of the ratchet wheel is provided with a fixed clamping part;

a ratchet wheel device which is arranged in the second containing groove and is used for meshing the ratchets;

a positioning member connected to the ratchet; and

the movable piece is arranged on the inner periphery of the ratchet wheel and movably connected with the positioning piece, the movable piece can move among a first state, a second state and a third state, the movable piece is provided with a movable clamping part, a tool groove is formed between the movable clamping part and the fixed clamping part to sleeve workpieces, and the movable piece and the positioning piece are mutually clamped and fixed in the first state; when the movable piece is in the second state, the movable piece moves along the direction parallel to the rotation axis; when the tool is in the third state, the movable member slides along the direction perpendicular to the rotation axis to adjust the size of the tool slot.

2. The adjustable ratchet wrench of claim 1, wherein the positioning member is disposed at an inner periphery of the ratchet wheel, the positioning member has a first engaging portion facing the rotation axis, the movable member has a second engaging portion corresponding to the first engaging portion, and the second engaging portion and the first engaging portion are engaged with each other in the first state.

3. The adjustable ratchet wrench of claim 1 further comprising a reset device disposed between the movable member and the ratchet wheel, the reset device enabling the movable member to move from the second state to the first state.

4. The ratchet adjustable wrench according to claim 2, wherein the first engaging portion and the second engaging portion are rack-shaped, the first engaging portion and the second engaging portion are engaged with each other, the first engaging portion is disposed along a radial direction of the rotation axis, the second engaging portion is disposed along the radial direction of the rotation axis, and a tooth section of the first engaging portion is longer than a tooth section of the second engaging portion.

5. The ratchet wrench of claim 4, wherein the first engaging portion has a plurality of first engaging teeth and a plurality of second engaging teeth, and the pitch of each first engaging tooth is greater than the pitch of each second engaging tooth.

6. The ratchet wrench of claim 5, wherein the first engaging portions are two and the second engaging portions are two, the first engaging portions are spaced apart from and parallel to the rotation axis, the second engaging portions are spaced apart from and parallel to the rotation axis, and the second engaging portions are not engaged with and staggered with the first engaging portions in the second state; in the third state, one of the second clamping parts is slidably arranged between the two first clamping parts.

7. The adjustable ratchet wrench according to claim 2, wherein the ratchet wheel has a receiving slot for receiving the positioning member, the ratchet wheel has a mounting surface at an end thereof facing the rotation axis, the mounting surface is connected to a stopper, a pushing portion of the movable member protrudes from the stopper, the positioning member is disposed between the stopper and the ratchet wheel, the stopper and the positioning member are engaged with each other, a protrusion is protruded from a side of the positioning member parallel to the mounting surface, a groove is recessed from a side of the stopper facing the mounting surface, and the protrusion is engaged with the groove.

8. The adjustable ratchet wrench of claim 3, wherein the ratchet has a mounting surface at an end facing the rotation axis, the positioning member is disposed on the mounting surface, a first engaging portion is disposed on a side of the positioning member facing the mounting surface, the movable member has a second engaging portion corresponding to the first engaging portion, and the second engaging portion and the first engaging portion are engaged with each other in the first state.

9. The adjustable ratchet wrench as claimed in claim 8, further comprising a sliding sleeve movably disposed on the inner periphery of the ratchet and sleeved on the movable member, wherein the restoring device is disposed between the sliding sleeve and the movable member, and in the third state, the movable member drives the sliding sleeve to slide along a direction perpendicular to the rotation axis.

10. The ratchet adjustable wrench according to claim 8, wherein the first engaging portion and the second engaging portion are rack-shaped, the first engaging portion and the second engaging portion are engaged with each other, the first engaging portion is disposed along a radial direction of the rotation axis, the second engaging portion is disposed along the radial direction of the rotation axis, and a tooth section of the first engaging portion is longer than a tooth section of the second engaging portion.

11. A ratchet adjustable wrench, comprising:

a ratchet wheel which is arranged in the first containing groove in a rotating way along the rotating axis, a plurality of ratchets are arranged on the periphery of the ratchet wheel in a surrounding way, and a fixed clamping part is arranged on the inner periphery of the ratchet wheel;

a ratchet wheel device which is arranged in the second containing groove and is meshed with the ratchets;

two positioning pieces respectively connected to the ratchet wheel;

the movable part is arranged on the inner periphery of the ratchet wheel and movably arranged between the two positioning pieces, the movable part can move among a first state, a second state and a third state, the movable part is provided with a movable clamping part, a tool groove is formed between the movable clamping part and the fixed clamping part to sleeve workpieces, and the movable part and the two positioning pieces are mutually clamped and fixed in the first state; when the movable piece is in the second state, the movable piece moves along the direction parallel to the rotation axis; when the tool is in the third state, the movable piece slides along the direction vertical to the rotation axis so as to adjust the size of the tool groove; and

and the resetting device is arranged between the moving piece and the ratchet wheel and enables the moving piece to move from the second state to the first state.

12. The adjustable ratchet wrench according to claim 11, wherein the two positioning members are disposed on two sides of the inner periphery of the ratchet, the two positioning members are respectively and transversely provided with a first engaging portion, each first engaging portion faces the rotation axis, the movable member is provided with a second engaging portion corresponding to each first engaging portion, each first engaging portion is disposed along a radial direction of the rotation axis, each second engaging portion is disposed along a radial direction of the rotation axis, and a radial length of each first engaging portion relative to the rotation axis is greater than a radial length of each second engaging portion relative to the rotation axis.

13. The adjustable ratchet wrench of claim 12, wherein each positioning member has two first engaging portions, the two first engaging portions of each positioning member are spaced apart from and parallel to the rotation axis, and each second engaging portion is slidably disposed between the two first engaging portions of each positioning member in the movable position.

14. The ratchet wrench of claim 12, wherein each of the first engaging portions has a plurality of first engaging teeth and a plurality of second engaging teeth, and the pitch of each of the first engaging teeth is greater than the pitch of each of the second engaging teeth.

15. The adjustable ratchet wrench according to claim 11, wherein the ratchet wheel has two receiving slots for the two positioning members, the ratchet wheel has an installation surface at an end thereof facing the rotation axis, the installation surface is connected to the two blocking members, the pushing portion of the movable member is protruded between the two blocking members, and the two blocking members are engaged with the two positioning members respectively.

16. The adjustable ratchet wrench according to claim 11, wherein the ratchet has a mounting surface at an end thereof facing the rotation axis, the two positioning members are respectively fixed to the mounting surface, the two positioning members have first engaging portions at a side thereof facing the mounting surface, the movable member has second engaging portions corresponding to the first engaging portions, each of the first engaging portions is disposed along a radial direction of the rotation axis, each of the second engaging portions is disposed along the radial direction of the rotation axis, and a radial length of each of the first engaging portions relative to the rotation axis is greater than a radial length of each of the second engaging portions relative to the rotation axis.

17. The adjustable ratchet wrench of claim 16 further comprising a sliding sleeve movably disposed on the inner periphery of the ratchet and sleeved on the movable member, wherein the restoring device is disposed between the sliding sleeve and the movable member, and in the third state, the movable member drives the sliding sleeve to slide along a direction perpendicular to the rotation axis.