TW201507819A - Ratchet wrench - Google Patents

Abstract

The present invention relates to a ratchet wrench comprising a main body, a driving head, a ratchet, at least a ratchet teeth block and at least one direction switching device. The main body has an accommodating chamber. The accommodating chamber includes a first section and a second section. The driving head is rotatably disposed in the first section of the accommodating chamber. Two different ends of the driving head have a first teeth portion and a driving portion. The first teeth portion is annularly disposed on the outer periphery of the driving head. The driving portion can drive a member to be driven. The ratchet is rotatably disposed in the second section of the accommodating chamber. The ratchet has a second teeth portion and a third teeth portion. The second teeth portion and the third teeth portion are respectively and annularly disposed at two different ends of the outer periphery of the ratchet. The second teeth portion is meshed with the first teeth portion of the driving head. The ratchet teeth block is slidingly disposed on the second section of the accommodating chamber. The ratchet teeth block has a fourth teeth portion. The fourth teeth portion is arranged on one end face of the ratchet teeth block adjacent to the ratchet. The fourth teeth portion is selectively meshed with the third teeth portion of the ratchet. The direction switching device is pivoted to the body and abuts against the ratchet teeth.

Description

Ratchet wrench

The invention mainly discloses a ratchet wrench, in particular a reversing ratchet wrench.

Please refer to the Patent No. 459593 of the Republic of China Patent No. 459593 for the improvement of the structure of the ratchet wrench. The main purpose is that the ratchet wrench has a receiving hole, and a ratchet can be accommodated therein, and the outer circumference of the ratchet has the engaging teeth and is accommodated. The hole is provided with a receiving groove on one side, and the receiving groove protrudes from a proper position at a proper position. The pivot rod can pivot a gear, the teeth of the gear are meshed with the engaging teeth of the ratchet, and the ratchet wrench extends a rod body. The inner part is a through hole for inserting a gear rod, the front end of the gear rod forms a tooth portion, and is inserted into the rod body to be meshed with the teeth of the gear, and the number of control elements can be placed in the accommodating groove to control the ratchet Positive reversal or one-way rotation, whereby the space for accommodating the groove can be set by the control element to control the positive reversal of the ratchet or the unidirectional rotation of the screw, and a gear is pivoted by rotating the gear rod. Driving the rotating gear and rotating the ratchet and then rotating the screwing member provides an improved ratchet wrench structure for the two kinds of rotating screwing functions.

The number control element of the above patent may be a combined structure of a tooth making, a steering block, a two-butting member and a two-elastic body, whereby the combined structure controls the positive or reverse rotation of the ratchet. However, the design of the above-mentioned combined structure must achieve the effect of positive reversal by the occlusion relationship between the tooth and the ratchet. And the gear and the ratchet also mesh with each other, and the rotating gear can rotate the gear to rotate the ratchet and then rotate the screw. Therefore, it is necessary to improve the occlusion effect of both the tooth and the gear to the ratchet, and it is possible to provide a reversing ratchet wrench having a better structural strength.

In view of the above problems of the prior art, which cannot be effectively solved and overcome, the present applicant has filed this patent application to solve the aforementioned problems.

The technical problem to be solved by the present invention is that the structural strength of the conventional ratchet wrench is not good.

To this end, the present invention provides a ratchet wrench comprising a body, a drive head, a ratchet, at least one ratchet block and a reversing device. The body has an accommodating chamber, the accommodating chamber includes a first section and a second section; the driving head is rotatably disposed in the first section of the accommodating chamber, and the driving head is different The first tooth portion has a first tooth portion and a driving portion. The first tooth portion is disposed on the outer periphery of the driving head. The driving portion can drive a to-be-driven member. The ratchet wheel is rotatably disposed in the receiving chamber. a second section, the ratchet has a second tooth portion and a third tooth portion, and the second tooth portion and the third tooth portion are respectively disposed at opposite ends of the outer circumference of the ratchet wheel, the second tooth portion a first tooth portion of the driving head; the ratchet block is slidably disposed in the second portion of the accommodating chamber, the ratchet block has a fourth tooth portion, and the fourth tooth portion is disposed on the ratchet The block is adjacent to an end surface of the ratchet, the fourth tooth portion is selectively engaged with the third tooth portion of the ratchet; the reversing device is pivoted to the body and tops the ratchet block.

The body has a positioning hole that communicates with the second section of the accommodating chamber.

The opposite end faces of the body comprise a first surface and a second surface, the receiving chamber penetrates the second surface, the body is provided with two connecting holes on the first surface, and the two connecting members are disposed through The two connecting holes are fixedly connected to the two fixing holes of one cover plate, so that the cover plate is embedded in the body.

The first surface of the body is adjacent to the two connecting holes, and the cover plate is provided with a second through hole and a third through hole, and the two ends of the driving head are respectively accommodated in the The first through hole and the second through hole are exposed, and the driving portion of the driving head is exposed to the second through hole of the cover, and one end of the ratchet is received in the third through hole of the cover.

In one embodiment, the at least one ratchet block has a groove away from an end surface of the fourth tooth portion, and the reversing device is pivotally disposed on the positioning hole of the body and tops the at least one ratchet block Groove.

The reversing device comprises a reversing member and at least one first elastic member, the reversing member comprises a dialing portion, a driving portion and at least one first receiving hole, wherein the dialing portion and the driving portion are respectively located And the first elastic hole is recessed on the outer peripheral edge of the driving portion adjacent to one end of the ratchet block, the first elasticity The piece is received in the first hole of the reversing member and the groove of the at least one ratchet block is topped.

The reversing device includes two first elastic members and a first top member, the reversing member includes two first receiving holes, and the two first elastic members respectively receive the two first receiving portions of the reversing member a hole, the first top member is slid between the one of the two first elastic members and the groove of the at least one ratchet block, and the other first elastic member directly tops the at least one ratchet block Groove.

The inner circumference of the positioning hole is recessed from the one end of the at least one ratchet block. The reversing device further includes a second elastic member and a second top member, and the reversing member further includes a second The second hole is recessed in an end of the outer peripheral edge of the driving portion away from the first hole, and the second elastic member is received in the second hole of the reversing member, the second top piece The top is disposed between the second elastic member and one of the two positioning grooves of the positioning hole.

In another embodiment, the ratchet wrench includes two ratchet blocks and a resilient biasing member biased between the two ratchet blocks.

Each of the ratchet blocks has a positioning portion, and the positioning portion is protruded from one end surface of each of the ratchet blocks and is received in the positioning hole of the body, and the positioning portion of each of the ratchet blocks is topped by the change To the device.

The reversing device includes a reversing member, the reversing member is exposed to the positioning hole of the body, and the reversing member comprises a dialing portion, a driving portion and a latching slot, wherein the dialing portion and the driving portion respectively The card slot is formed at the opposite ends of the reversing member, and the latching groove is formed at an end of the driving portion adjacent to the two ratchet blocks and is mutually topped with the positioning portions of the two ratchet blocks.

The reversing member has two positioning recesses recessed from an inner wall surface of the latching groove away from the end of the ratchet, and the two positioning recesses are selectively topped with the positioning portions of the two ratchet blocks.

The body is provided with a pivoting hole and a positioning flange adjacent to the positioning hole, and the reversing member is provided with a pivoting portion and two positioning recesses in the driving portion, and the pivoting portion of the reversing member is pivoted The positioning flange of the body is selectively latched to one of the two positioning pockets of the reversing member.

The main technical effect of the present invention is that the third tooth portion of the ratchet is engaged with the first tooth portion of the driving head by the second tooth portion of the ratchet, and the third tooth portion of the ratchet block is in mesh with the fourth tooth portion of the ratchet block. The wrench can drive the to-be-driven member and can provide a better meshing structural force when the ratchet is engaged with the ratchet block by the fourth tooth portion of the ratchet block, and provide a small angle to rotate the ratchet wrench to provide a comparison The effect of high torque.

The secondary technical effect of the present invention is that the driving head, the ratchet and the ratchet block are separately manufactured and intermeshed, the manufacturing method is simple, and the assembly chamber assembled to the body has a fast flow, which not only saves assembly cost, but also causes damage or repair of the ratchet wrench. Simply replace the damaged components and significantly extend the life.

Another technical effect of the present invention is that the first top member is placed between the one of the two first elastic members and the groove of the ratchet block, and the other first elastic member directly tops the spine. The groove of the tooth block is such that the ratchet block is simultaneously biased by the first top piece and the first elastic piece to greatly enhance the meshing effect between the ratchet block and the ratchet.

Another technical effect of the present invention is that the second elastic member is received in the second hole of the reversing member, and the second top member is mounted on the two positioning slots of the second elastic member and the positioning hole. Between one of them, the positioning function between the reversing member of the reversing device and the positioning hole of the body is provided and the engagement effect between the ratchet block and the ratchet is enhanced.

Other objects, advantages and novel features of the invention will be apparent from the description and appended claims.

The technology, the means and the functions of the present invention are described in detail with reference to the accompanying drawings.

1 to 4 are a perspective view, an exploded perspective view and a cross-sectional view of a first embodiment of a ratchet wrench of the present invention. A ratchet wrench provided by the present invention includes a body 10, a driving head 20, a ratchet 30, at least one ratchet block 40 and a reversing device 50, the driving head 20, the ratchet 30 and the at least one The ratchet block 40 is received within the body 10. In the present embodiment, the ratchet wrench includes a ratchet block 40.

The opposite end faces of the body 10 include a first surface 101 and a second surface 102, and the body 10 includes a receiving chamber 11, a positioning hole 12, a connecting hole 13 and a first through hole 14. The accommodating chamber 11 penetrates the second surface 102 and divides a first section 111 and a second section 112 along a length direction. The positioning hole 12 extends along a height direction and is adjacent to the accommodating chamber 11 The second sections 112 are in communication, and the height direction is perpendicular to the length direction. The two connecting holes 13 are formed in the first surface 101. The two connecting members 70 are respectively disposed in the two connecting holes 13 and are fixedly connected to the two fixing holes 81 of a cover plate 80. The driving body 20 , the ratchet wheel 30 and the ratchet block 40 are firmly received in the accommodating chamber 11 of the body 10 and cannot be separated from the accommodating chamber 11 . A first through hole 14 is defined in the first surface 101 adjacent to the two connecting holes 13 . The cover plate 80 is provided with a second through hole 82 and a third through hole 83 . The first part of the body 10 . The through hole 14 and the second through hole 82 of the cover plate 80 are corresponding to the height direction. The two opposite ends of the driving head 20 are respectively received in the first through hole 14 and the second through hole 82. One end of the 20 is received in the third through hole 83 of the cover plate 80.

The driving head 20 is rotatably disposed in the first section 111 of the accommodating chamber 11 . The driving head 20 has a first tooth portion 21 and a driving portion 22 at different ends along the height direction. The tooth portion 21 is disposed on the outer periphery of the driving head 20. The driving portion 22 is exposed to the second through hole 82 of the cover plate 80 and can drive a member to be driven (not shown).

The ratchet wheel 30 is rotatably disposed in the second section 112 of the accommodating chamber 11 . The ratchet wheel 30 has a second tooth portion 31 and a third tooth portion 32 along the height direction. The second tooth portion 31 and the The third tooth portions 32 are respectively disposed at opposite ends of the outer circumference of the ratchet wheel 20 and adjacent to each other such that the second tooth portion 31 closely abuts the end surface of the third tooth portion 32, and the second tooth portion 31 The number of teeth is smaller than the number of teeth of the third tooth portion 32, and the second tooth portion 31 is engaged with the first tooth portion 21 of the drive head 20.

The ratchet block 40 has a substantially meniscus shape and is slidably disposed in the second section 112 of the accommodating chamber 11. The ratchet block 40 has a fourth tooth portion 41 and a groove 42. The fourth tooth portion 41 has a fourth tooth portion 41. The ratchet block 40 is disposed adjacent to an arcuate end surface of the ratchet 30. The recess 42 is disposed on an end surface of the ratchet block 40 away from the fourth tooth portion 41. The fourth portion of the ratchet block 40 is disposed. The tooth portion 41 divides a first engaging portion 411 and a second engaging portion 412 in a width direction and selectively engages the third tooth portion 32 of the ratchet wheel 30, so that the ratchet wrench has a reversing function, and the width direction It is perpendicular to the height direction.

Referring to FIG. 5 and FIG. 6 simultaneously, the reversing device 50 includes a reversing member 51, at least one first elastic member 52 and a first top member 53. The reversing member 51 includes a dial portion 511, a driving portion 512 and at least one first hole 513. In the embodiment, the reversing device 50 includes two first elastic members 52, and the reversing member 51 includes The two first accommodating holes 513 are respectively located at different ends of the reversing member 51 along the height direction, and the urging portion 511 is exposed to the positioning hole 12 of the body 10 . And extending along the length direction for the user to move the reversing member 51. The two first holes 513 are recessed along the length of the outer peripheral edge of the driving portion 512 adjacent to one end of the ratchet block 40 and along the length direction. The height direction of the first elastic member 52 is received in the two first holes 513 of the reversing member 51. The first top member 53 is mounted on the two first elastic members 52. Between one of the recesses 42 and the recess 42 of the ratchet block 40, and the other first elastic member 52 directly abuts the recess 42 of the ratchet block 40, so that the ratchet block 40 is simultaneously received by the first top member The biasing force of the first elastic member 52 is such that the ratchet block 40 is engaged with the ratchet 30.

Referring to FIG. 7 at the same time, the inner circumference of the positioning hole 12 of the body 10 is away from the end of the ratchet block 40, and two positioning slots 121 are recessed along the length direction. The reversing device 50 further includes a second elastic member 54 and a The second top member 55 further includes a second hole 514 recessed in an end of the outer periphery of the driving portion 512 away from the first hole 513 and along the length The second elastic member 54 is received in the second hole 514 of the reversing member 51. The second top member 55 is disposed on the two positioning slots 121 of the second elastic member 54 and the positioning hole 12. Between one of them, the positioning function between the reversing member 51 of the reversing device 50 and the positioning hole 12 of the body 10 is provided and the engagement effect between the ratchet block 40 and the ratchet 30 is enhanced.

8 to 11 are schematic views showing the operation of the first embodiment of the ratchet wrench of the present invention. The reversing member 51 of the reversing device 50 is switchable between the first position and the second position. When the reversing member 51 is in the first position, the ratchet wrench is rotated in the first direction to drive the to-be-driven member. When the reversing member 51 is in the second position, the ratchet wrench is rotated in the second direction to drive the member to be driven, and the second direction is opposite to the first direction.

As shown in FIG. 6 and FIG. 8 , the first top member 53 is disposed between one of the two first elastic members 52 and the groove 42 of the ratchet block 40 , and the other first elastic member 52 . The groove 42 of the ratchet block 40 is directly slid so that the ratchet block 40 is simultaneously biased by the first ram member 53 and the first elastic member 52. When the reversing member 51 is in the first position and the ratchet wrench is rotated in the first direction, the second tooth portion 31 of the ratchet wheel 30 is engaged with the first tooth portion 21 of the driving head 20, and the third tooth portion of the ratchet wheel 30 32 is intermeshing and fixed with the first engaging portion 411 of the fourth tooth portion 41, the ratchet wrench capable of driving the member to be driven to rotate in the first direction, and being capable of being driven by the first engaging portion 411 of the fourth tooth portion 41 Providing the ratchet 30 with a better meshing force when engaged with the ratchet block 40 provides the ability to rotate the ratchet wrench a small angle to provide greater torque.

As shown in FIG. 9 and FIG. 10, when the reversing member 51 is in the first position and the ratchet wrench is rotated in the second direction, the second tooth portion 31 of the ratchet 30 is engaged with the first tooth portion 21 of the driving head 20. And the ratchet 30 is rotated relative to the driving head 20, so that the third tooth portion 32 of the ratchet 30 is engaged with the first engaging portion 411 of the fourth tooth portion 41 and simultaneously drives the ratchet block 40 relative to the receiving portion The second section 112 of the chamber 11 slides to achieve the effect of the ratcheting, at which point the ratchet wrench idles without driving the member to be driven.

As shown in FIG. 11 , the reversing member 51 is located at the second position, and the second tooth portion 31 of the ratchet 30 is engaged with the first tooth portion 21 of the driving head 20 , and the third tooth portion 32 of the ratchet wheel 30 and the first portion The second engaging sections 412 of the four-toothed portion 41 are in mesh with each other.

12 to FIG. 15 are a perspective view, an exploded perspective view and a cross-sectional view of a second embodiment of the ratchet wrench of the present invention. The structure of the drive head 20 and the ratchet 30 in the second embodiment of the ratchet wrench of the present invention is the same as that of the first embodiment, with the difference that the second embodiment of the ratchet wrench of the present invention includes a body 10a, two ratchet blocks 40a, A reversing device 50a is coupled to a resilient biasing member 60 that is biased between the two ratchet blocks 40a.

The body 10a includes a receiving chamber 11a and a positioning hole 12a. The receiving chamber 11a defines a first section 111a and a second section 112a. The positioning hole 12a extends along the height direction and is received therein. The second section 112a of the chamber 11a is in communication.

The two ratchet blocks 40a are slidably disposed in the second section 112a of the accommodating chamber 11a, and an end surface of each of the ratchet blocks 40a extends along the height direction to form a positioning portion 42a, and each of the positioning portions 42a extends. And is received in the positioning hole 12a of the body 10a.

The reversing device 50a is pivotally disposed on the body 10a and includes a reversing member 51a. The reversing member 51a is exposed to the positioning hole 12a of the body 10a. The reversing member 51a includes a dialing portion 511a, a driving portion 512a and a latching slot 513a. The dialing portion 511a and the driving portion 512a are respectively located at opposite ends of the reversing member 51a along the height direction. The latching groove 513a is formed at an end of the driving portion 512a adjacent to the two ratchet blocks 40a. The reversing member 51a is recessed in the longitudinal direction of the inner wall surface of the latching groove 513a away from the end of the ratchet wheel 30. The positioning groove 514a is selectively slidable with the positioning portion 42a of the two ratchet blocks 40a, respectively, so that the reversing member 51a can drive the two ratchet blocks 40a relative to the receiving portion 42a. The second section 112a of the chamber 11a slides. The body 10a is provided with a pivoting hole 121a and a positioning flange 122a adjacent to the positioning hole 12a. The rotating member 51a is provided with a pivoting portion 515a and two positioning recesses 516a. The pivoting portion 515a of the member 51a extends in the height direction and is pivotally disposed on the pivot hole 121a of the body 10a by a C-shaped buckle. The positioning flange 122a of the body 10a is selectively latched in the reversing direction. One of the two positioning pockets 516a of the piece 51a. When the reversing member 51a is in the first position, the positioning portion 42a of one of the two ratchet blocks 40a is mounted on one of the two positioning grooves 514a of the reversing member 51a, and the two ratchet blocks 40a One of the fourth tooth portions 41a is engaged with the third tooth portion 32 of the ratchet wheel 30.

16 and FIG. 17, which are perspective exploded views and cross-sectional views of a third embodiment of a ratchet wrench of the present invention. The third embodiment of the ratchet wrench of the present invention is substantially the same as the first embodiment, and the structure of the body 10, the driving head 20, the ratchet 30, and the at least one ratchet block 40 is the same as that of the first embodiment, with the difference that the present invention A reversing device 50b of the third embodiment of the ratchet wrench.

The reversing device 50b includes a reversing member 51b, a first elastic member 52b and a first top member 53b. The reversing member 51b includes a dialing portion 511b, a driving portion 512b and a first receiving hole 513b. The dialing portion 511b and the driving portion 512b are respectively located at different ends of the reversing member 51b along the height direction. And the dialing portion 511b is exposed in the positioning hole 12 of the body 10 and extends along the length direction for the user to move the reversing member 51b. The first hole 513b is recessed in the driving portion along the length direction. The outer peripheral edge of the 512b is adjacent to one end of the ratchet block 40. The first elastic member 52b is received in the first through hole 513b. The first top member 53b is mounted on the first elastic member 52b and the ratchet. Between the recesses 42 of the block 40, the ratchet block 40 is engaged with the ratchet 30.

The reversing device 50b further includes a second elastic member 54b and a second top member 55b. In the embodiment, the second top member 55b is a ball. The reversing member 51b further includes a second hole 514b recessed from an end of the outer peripheral edge of the driving portion 512b away from the first hole 513b and extending along the length direction, the second elasticity The piece 54b is received in the second hole 514b, and the second top piece 55b is disposed between the second elastic piece 54b and one of the two positioning grooves 121 of the positioning hole 12 to provide the reversing part. The positioning function between the 51b and the positioning hole 12 of the body 10 and at the same time enhances the meshing effect between the ratchet block 40 and the ratchet 30.

In summary, the ratchet wrench of the present invention has the following advantages:

The ratchet wrench of the present invention is engaged with the first tooth portion 21 of the drive head 20 by the second tooth portion 31 of the ratchet wheel 30, the third tooth portion 32 of the ratchet wheel 30 and the ratchet block 40, 40a The fourth tooth portions 41, 41a are engaged with each other, and the ratchet wrench can drive the to-be-driven member and the fourth tooth portion 41, 41a of the ratchet block 40, 40a can provide the ratchet wheel 30 to engage the ratchet block 40, 40a has a better meshing force to provide a small angle of rotation of the ratchet wrench to provide greater torque.

2. The driving head 20 of the ratchet wrench of the present invention, the ratchet wheel 30 and the ratchet block 40, 40a are separately manufactured and intermeshing, the manufacturing method is simple, and the assembly chambers 11 and 11a assembled to the bodies 10 and 10a are fast, not only saving assembly. Cost, only need to replace the damaged components when the ratchet wrench is damaged or repaired, greatly extending the service life.

3. The first top member 53 of the ratchet wrench of the present invention is placed between one of the two first elastic members 52 and the recess 42 of the ratchet block 40, and the other first elastic member 52 is directly topped. The groove 42 of the ratchet block 40 is such that the ratchet block 40 is simultaneously biased by the first top member 53 and the first elastic member 52 to substantially increase the space between the ratchet block 40 and the ratchet 30. Engagement effect.

The second elastic member 54 of the ratchet wrench of the present invention is received in the second hole 514 of the reversing member 51. The second top member 55 is mounted on the second elastic member 54 and the positioning hole 12. Between one of the positioning slots 121 to provide a positioning function between the reversing member 51 of the reversing device 50 and the positioning hole 12 of the body 10 and at the same time to strengthen the engagement between the ratchet block 40 and the ratchet 30 effect.

In summary, the ratchet wrench of the present invention is not seen in the prior art, so it has the novelty and advancement of the patent, and the use value of the industry; the applicant filed an invention patent application with the bureau according to the provisions of the patent law. .

10‧‧‧ Ontology
101‧‧‧ first surface
102‧‧‧ second surface
11‧‧‧ housing room
111‧‧‧First section
112‧‧‧second section
12‧‧‧Positioning holes
121‧‧‧ positioning slot
13‧‧‧connection hole
14‧‧‧First through hole
20‧‧‧Drive head
21‧‧‧First tooth
22‧‧‧ Drive Department
30‧‧‧ratchet
31‧‧‧Second tooth
32‧‧‧ Third tooth
40‧‧‧ ratchet block
41‧‧‧fourth tooth
411‧‧‧First meshing section
412‧‧‧Second meshing section
42‧‧‧ Groove
50‧‧‧Reversing device
51‧‧‧Reversing parts
511‧‧‧The Ministry of Movement
512‧‧‧Drive Department
513‧‧‧First hole
514‧‧‧Second hole
52‧‧‧First elastic parts
53‧‧‧First top condition
54‧‧‧Second elastic parts
55‧‧‧Second top piece
10a‧‧‧ Ontology
11a‧‧‧ housing room
111a‧‧‧First section
112a‧‧‧second section
12a‧‧‧Positioning holes
121a‧‧‧Pivot hole
122a‧‧‧Positioning flange
40a‧‧‧ ratchet block
41a‧‧‧4th tooth
42a‧‧‧ Positioning Department
50a‧‧‧Reversing device
51a‧‧‧Reversing parts
511a‧‧‧Driving Department
512a‧‧‧Drive Department
513a‧‧‧ card slot
514a‧‧‧ positioning groove
515a‧‧‧ pivotal department
516a‧‧‧Positioning pit
50b‧‧‧Reversing device
51b‧‧‧Reversing parts
511b‧‧‧Driving Department
512b‧‧‧Drive Department
513b‧‧‧first hole
514b‧‧‧Second hole
52b‧‧‧First elastic parts
53b‧‧‧First top condition
54b‧‧‧Second elastic parts
55b‧‧‧Second top condition
60‧‧‧Elastic biasing parts
70‧‧‧Connecting parts
80‧‧‧ cover
81‧‧‧Fixed holes
82‧‧‧Second through hole
83‧‧‧ third through hole

Figure 1 is a perspective view of the first embodiment of the ratchet wrench of the present invention. Figure 2 is an exploded perspective view of Figure 1. Fig. 3 is an exploded perspective view taken at another angle of Fig. 1. Figure 4 is a cross-sectional view of Figure 1 showing a drive head intermeshing with a ratchet and the ratchet engaging a ratchet block. Figure 5 is another cross-sectional view of Figure 1 showing a first top member being placed between one of the two first resilient members and the ratchet block. Figure 6 is a further cross-sectional view of Figure 1 showing the other first resilient member licking the ratchet block. Figure 7 is another cross-sectional view of Figure 1 showing a second top member being placed between a second resilient member and one of the two positioning slots of a locating aperture. Figure 8 is a schematic view showing the operation of the first embodiment of the ratchet wrench of the present invention, showing a dial member in a first position and the ratchet wrench rotating in a first direction. Figure 9 is a continuation of Figure 8 showing the dial member in a first position and the ratchet wrench is rotated in a second direction, the drive head being rotated relative to the ratchet. Figure 10 is a continuation of Figure 9 showing the dial member in a first position and the ratchet wrench is further rotated in a second direction. Figure 11 is a schematic view showing the operation of the first embodiment of the ratchet wrench of the present invention, showing that the dial member is in the second position. Figure 12 is a perspective view showing the second embodiment of the ratchet wrench of the present invention. Figure 13 is an exploded perspective view of Figure 12. Figure 14 is an exploded perspective view of another angle of Figure 12. Figure 15 is a cross-sectional view of Figure 12. Figure 16 is an exploded perspective view of a third embodiment of the ratchet wrench of the present invention. Figure 17 is a cross-sectional view showing a third embodiment of the ratchet wrench of the present invention.

10‧‧‧ Ontology

101‧‧‧ first surface

12‧‧‧Positioning holes

121‧‧‧ positioning slot

13‧‧‧connection hole

14‧‧‧First through hole

20‧‧‧Drive head

21‧‧‧First tooth

22‧‧‧ Drive Department

30‧‧‧ratchet

31‧‧‧Second tooth

32‧‧‧ Third tooth

40‧‧‧ ratchet block

41‧‧‧fourth tooth

411‧‧‧First meshing section

412‧‧‧Second meshing section

42‧‧‧ Groove

50‧‧‧Reversing device

51‧‧‧Reversing parts

511‧‧‧The Ministry of Movement

512‧‧‧Drive Department

513‧‧‧First hole

514‧‧‧Second hole

52‧‧‧First elastic parts

53‧‧‧First top condition

54‧‧‧Second elastic parts

55‧‧‧Second top piece

70‧‧‧Connecting parts

80‧‧‧ cover

81‧‧‧Fixed holes

82‧‧‧Second through hole

83‧‧‧ third through hole

Claims (14)

A ratchet wrench includes: a body having an accommodating chamber, the accommodating chamber including a first section and a second section; and a driving head rotatably disposed in the accommodating chamber a first segment, the different ends of the driving head have a first tooth portion and a driving portion, the first tooth portion is disposed on an outer circumference of the driving head, and the driving portion can drive a to-be-driven member; a ratchet wheel rotatably disposed in the second section of the accommodating chamber, the ratchet wheel having a second tooth portion and a third tooth portion, wherein the second tooth portion and the third tooth portion are respectively disposed on the ratchet wheel The second tooth portion of the outer peripheral edge is engaged with the first tooth portion of the driving head; the at least one ratchet block is slidably disposed in the second portion of the accommodating chamber, the ratchet block has a fourth tooth portion, the fourth tooth portion is disposed on an end surface of the ratchet block adjacent to the ratchet wheel, the fourth tooth portion is selectively engaged with the third tooth portion of the ratchet wheel; and a reversing device The body is pivoted to the body and the at least one ratchet block is topped. The ratchet wrench of claim 1, wherein the body has a positioning hole that communicates with the second section of the accommodation chamber. The ratchet wrench according to claim 2, wherein the at least one ratchet block has a groove away from an end surface of the fourth tooth portion, and the reversing device is pivotally disposed on the positioning hole of the body and tops the at least one The groove of the ratchet block. The ratchet wrench of claim 3, wherein the reversing device comprises a reversing member and at least one first elastic member, the reversing member comprising a dial portion, a driving portion and at least one first hole, The dialing portion and the driving portion are respectively located at different ends of the rotating member, and the dialing portion is exposed to the positioning hole of the body, and the at least one first receiving hole is recessed on the outer periphery of the driving portion adjacent to One end of the ratchet block, the first elastic member is received in the first hole of the reversing member and tops the groove of the at least one ratchet block. The ratchet wrench of claim 4, wherein the reversing device comprises two first elastic members and a first top member, the reversing member comprising two first holes, the two first elastic members respectively receiving And disposed in the two first holes of the reversing member, the first top member is mounted between the one of the two first elastic members and the groove of the at least one ratchet block, and the other first elastic The piece directly tops the groove of the at least one ratchet block. The ratchet wrench of claim 4, wherein the reversing device comprises a first elastic member and a first top member, the reversing member comprising a first bore, the first elastic member being accommodated in the exchange a first bore of the member, the first top member being supported between the first elastic member and the recess of the at least one ratchet block. The ratchet wrench of claim 5 or 6, wherein the inner circumference of the positioning hole is recessed from the one end of the at least one ratchet block by two positioning grooves, and the reversing device further comprises a second elastic member and a second The top member further includes a second hole, the second hole is recessed at an end of the outer periphery of the driving portion away from the first hole, and the second elastic member is accommodated in the direction The second receiving hole of the piece is disposed between the second elastic member and one of the two positioning grooves of the positioning hole. A ratchet wrench according to claim 2, comprising two ratchet blocks and a resilient biasing member biased between the two ratchet blocks. The ratchet wrench of claim 8, wherein each of the ratchet blocks has a positioning portion protruding from an end surface of each of the ratchet blocks and receiving a positioning hole of the body, each of the The positioning portion of the ratchet block is topped by the reversing device. The ratchet wrench of claim 9, wherein the reversing device comprises a reversing member, the reversing member is exposed to the positioning hole of the body, the reversing member comprises a dialing portion, a driving portion and a latching a slot, the dialing portion and the driving portion are respectively located at different ends of the reversing member, and the latching groove is formed at an end of the driving portion adjacent to the two ratchet blocks and the positioning portion of the two ratchet blocks Topping each other. The ratchet wrench of claim 10, wherein the reversing member has two positioning grooves recessed from an inner wall surface of the latching groove away from the end of the ratchet, and the two positioning grooves respectively correspond to the two ratchet blocks The positioning portions are selectively topped each other. The ratchet wrench of claim 11, wherein the body is provided with a pivot hole and a positioning flange adjacent to the positioning hole, and the reversing member is provided with a pivoting portion and two positioning pits in the driving portion. The pivoting portion of the reversing member is pivotally disposed on the pivoting hole of the body, and the positioning flange of the body is selectively latched to one of the two positioning recesses of the reversing member. The ratchet wrench of any one of claims 1 to 6, 8 to 12, wherein the opposite end faces of the body comprise a first surface and a second surface, the receiving chamber penetrating the second surface, The main body is provided with two connecting holes on the first surface, and the two connecting members are disposed in the two connecting holes and are fixedly connected to the two fixing holes of a cover plate, so that the cover plate is embedded in the body. The ratchet wrench of claim 13, wherein the body is provided with a first through hole adjacent to the two connecting holes on the first surface, and the cover plate is provided with a second through hole and a third through hole, the driving The two ends of the rat are respectively disposed on the first through hole and the second through hole, and the driving portion of the driving head is exposed to the second through hole of the cover, and one end of the ratchet is received in the cover The third through hole.