TWM483149U - Ratchet wrench for single-hand operation and direction switching - Google Patents

Description

Ratchet wrench with one-handed operation and switching direction

This creation is related to ratchet wrenches, especially for a ratchet wrench that can be operated with one hand and switched direction.

Conventional ratchet wrenches mostly have the function of switchable direction, that is, the ratchet wrench can be switched to drive the screw or nut to rotate clockwise, or can be switched to drive the screw or nut against the reverse The direction of the clockwise rotation. The manner in which the conventional ratchet wrench switches direction is mostly for the user to switch a switching member disposed outside the head of the ratchet wrench to switch the direction of the ratchet disposed on the inner side of the head (ie, the screw or the screw can be driven The rotation direction of the nut) is simple in construction. However, when the user holds and operates the ratchet wrench with one hand, the switch must be toggled with the other hand to switch the direction of the ratchet. This way of use is more inconvenient.

There are also ratchet wrenches that allow users to operate and switch directions with one hand. For example, the patent number is M381488. Although it is convenient to use, the structure is more complicated.

The main purpose of this creation is to provide a ratchet wrench that can be operated with one hand and switched direction, which is simple in structure and convenient to use.

In order to achieve the above objectives, this creation provides one-handed operation and switching directions. The ratchet wrench includes a head and a grip. The head includes a casing having a receiving space and a passage communicating with each other, the channel defining an imaginary axis, the head further comprising a ratchet disposed on the receiving space, a first card And a second latching block and a second latching elastic member for pushing the first latching block and the second latching block toward the ratchet, respectively, and a positioning block located in the channel. The grip has a grip portion connected in sequence, a through portion passing through the passage of the head, and a pushing portion located in the receiving space, the through portion having an outer surface, and One of the outer surface recesses and one of the first positioning groove and the second positioning groove. Wherein the grip bar is capable of being moved by an external force from any one of the first acting position and the second acting position to the outer casing and along the imaginary axis to a switching position; the grip is located at the first function In the position, the positioning block is located in the first positioning slot, and the first latching block is pushed against the ratchet by the pushing portion; when the grip is in the second acting position, the positioning block is located The second positioning groove is separated from the ratchet by the pushing portion; the grip is located at the switching position and is rotatable relative to the outer casing and centered on the imaginary axis, The positioning block slides in the sliding slot when the grip is rotated.

Thereby, when the user holds and operates the ratchet wrench with one hand, the same hand can also be used to move and rotate the grip bar relative to the outer casing, so that the grip is in the first acting position and the first Switching between the two action positions, thereby achieving the effect of switching the direction of action of the ratchet. In other words, the ratchet wrench can be operated by the user with one hand and the direction of the switch, so that it is quite convenient to use, and the ratchet wrench has a relatively simple structure.

The detailed construction, features, assembly or use of the ratchet wrench provided by this creation for one-handed operation and switching direction will be described in the detailed description of the subsequent embodiments. However, those with ordinary knowledge in this field of creation should be able to understand that such details are The specific embodiments set forth in the present disclosure are merely illustrative of the present invention and are not intended to limit the scope of the patent application.

10‧‧‧ Ratchet Wrench

20‧‧‧ head

21‧‧‧ Shell

211‧‧‧Shell

212‧‧‧ Cover

213‧‧‧ accommodating space

214‧‧‧ inside top

215‧‧‧ inside bottom

216‧‧‧ channel

217, 218‧‧‧ perforation

22‧‧‧ ratchet

23‧‧‧First card block

24‧‧‧Second card block

25, 26‧‧‧ cassette elastic parts

27‧‧‧ Positioning parts

271‧‧‧ Positioning block

28‧‧‧Flexible positioning components

281‧‧‧Fixed parts

282‧‧‧ Positioning elastic parts

283‧‧‧ sphere

30‧‧‧ Grip

31‧‧‧ grip

32‧‧‧ Department of Wear

321‧‧‧ outer surface

322‧‧‧Chute

323‧‧‧First positioning slot

324‧‧‧Second positioning slot

325‧‧‧third positioning slot

326‧‧‧4th positioning slot

End of 327‧‧‧

33‧‧‧Pushing Department

331‧‧‧ rod body

332‧‧‧ cam

333‧‧‧Circular edges

34‧‧‧

40‧‧‧Reset elastic parts

50‧‧‧ sleeve

L‧‧‧ imaginary axis

P1‧‧‧first action position

P2‧‧‧second action position

P3‧‧‧Switch position

Θ‧‧‧ center angle

D1, D2‧‧‧ vertical distance

R‧‧‧ radius of curvature

1 is a perspective assembled view of a ratchet wrench that can be operated with one hand and switched in direction according to a preferred embodiment of the present invention; FIG. 2 is a one-handed operation and switching direction provided by the preferred embodiment of the present invention. 3 is an exploded perspective view of the ratchet wrench; FIG. 3 is a cross-sectional view taken along line 3-3 of the first drawing, showing a state in which the grip of one of the ratchet wrench is at a first acting position; and FIG. 4 is a third view; A cross-sectional view taken along line 4-4; Figures 5 and 6 are similar to Figures 3 and 4, respectively, except that the grip of the ratchet wrench is in a second position; and The figure is similar to that of Figure 3, but shows that the grip of the ratchet wrench is in a switching position.

Please refer to FIG. 1 and FIG. 2 . The ratchet wrench 10 capable of single-handed operation and switching direction according to a preferred embodiment of the present invention includes a head 20 , a grip 30 , a return elastic member 40 , and A sleeve 50.

The head 20 includes a housing 21, a ratchet 22, a first latching block 23, a second latching block 24, two latching elastic members 25, 26, a positioning member 27, and an elastic positioning assembly 28.

The housing 21 includes a housing 211 and a screw (not shown) The cover 212 is fixed to the housing 211. Referring to FIG. 3 and FIG. 4 , the housing 21 has an accommodating space 213 , an inner surface 214 of the cover body 212 facing the accommodating space 213 , and a housing 211 . The top surface 214 is opposite the inner bottom surface 215. One end of the outer casing 21 is further provided with a passage 216 communicating with the accommodating space 213, and the passage 216 can define an imaginary axis L. One side of the outer casing 21 is further provided with two through holes 217, 218 communicating with the passage 216 and having internal threads.

The first and second latching blocks 23 and 24 are pivotally disposed on the housing 211 and located in the accommodating space 213. The two latching elastic members 25 are respectively rotatably disposed in the accommodating space 213. 26 is a compression spring, which is disposed in the accommodating space 213 and has one end abutting against the housing 211. The two latching elastic members 25 and 26 respectively abut the first and second latching blocks 23 at the other end thereof. And 24, and respectively pushing the first and second latching blocks 23, 24 toward the ratchet wheel 22.

One end of the positioning member 27 has a square positioning block 271. The other portion of the positioning member 27 is provided with an external thread and is screwed into the through hole 217 such that the positioning block 271 is located in the passage 216.

The elastic positioning component 28 includes a fixing member 281 as a bolt, a positioning elastic member 282 as a compression spring, and a ball 283. The fixing member 281 is screwed and fixed in the through hole 218, and the positioning elastic member 282 is disposed. And the ball 283 is confined within the perforation 218.

The grip 30 has a grip portion 31, a penetrating portion 32 and a pushing portion 33. The outer diameter of the penetrating portion 32 is smaller than the outer diameter of the grip portion 31, thereby forming a The step portion 34 of the interface between the wearing portion 32 and the grip portion 31. The through portion 32 has an outer surface 321 and a groove 322 and a first to fourth positioning grooves 323, 324, 325, 326 recessed from the outer surface 321 , wherein the first and second positioning grooves 323 , 324 Connected to the chute 322 and The sliding groove 322 extends in the direction of the pushing portion 33, and the third and fourth positioning grooves 325 and 326 extend from the through portion 32 toward the end 327 of the pushing portion 33 toward the grip portion 31. And corresponding to the positions of the first and second positioning slots 323, 324, respectively. The pushing portion 33 has a rod body 331 extending from the end 327 of the wearing portion 32, and a cam 332 disposed at the end of the rod body 331. The cam portion 332 has a circular arc-shaped edge 333.

The through portion 32 of the gripping member 30 is disposed in the passage 216 of the head portion 20, and the positioning block 271 is located in the first positioning slot 323, the second positioning slot 324 or the sliding slot 322, and the grip is The rod 30 is coupled to the outer casing 21 to prevent the two from being separated from each other. The ball 283 is pushed by the positioning elastic member 282 to be located at the third positioning groove 325, the fourth positioning groove 326 or the outer surface 321. The grip portion 31 is located outside the head portion 20 for the user to hold. The pushing portion 33 is located in the accommodating space 213 for pushing against the first latching block 23 or the second latching block 24 .

The return elastic member 40 is a compression spring that is sleeved on the through portion 32 of the grip 30. One end of the return elastic member 40 abuts against the outer casing 21 of the head portion 20, and the other end of the return elastic member 40 It abuts against the step 34 of the grip 30.

The sleeve 50 is sleeved on the grip 30 and shields the return elastic member 40. The sleeve 50 can be fixed to the outer casing 21 by welding or other fixing means, or can be integrally formed with the outer casing 21.

When the ratchet wrench 10 is in a normal use state, the grip 30 is located at one of the first action positions P1 as shown in FIGS. 3 and 4, or as a second action as shown in FIGS. 5 and 6. Position P2.

As shown in FIG. 3 and FIG. 4, when the grip 30 is located at the first active position P1, the positioning block 271 is located in the first positioning slot 323, and the spherical body 283 is located in the third positioning. The slot 325 has a circular arc edge 333 of the cam 332 facing the first latching block 23. At this time, the grip 30 cannot be rotated relative to the outer casing 21, and the first latching block 23 is received by the pushing portion 33. The cam 332 is pushed against and separated from the ratchet 22, and the second latching block 24 is engaged with the ratchet 22. As a result, when the user operates the ratchet wrench 10, the ratchet 22 can only rotate in the clockwise direction (as seen from the direction of FIG. 3), and cannot rotate in the counterclockwise direction.

As shown in FIG. 5 and FIG. 6 , when the grip 30 is located at the second active position P2 , the positioning block 271 is located in the second positioning slot 324 , and the ball 283 is located in the fourth positioning slot 326 . The arcuate edge 333 of the cam 332 faces the second latching block 24. At this time, the gripping bar 30 cannot be rotated relative to the outer casing 21, and the second latching block 24 is pushed by the cam 332 of the pushing abutting portion 33. In contrast to the ratchet 22, the first latching block 23 is engaged with the ratchet 22. As a result, when the user operates the ratchet wrench 10, the ratchet 22 can only rotate in the counterclockwise direction (as seen from the direction of FIG. 5), and cannot rotate in the clockwise direction.

When the user wants to switch the grip 30 from the first acting position P1 to the second acting position P2, or from the second acting position P2 to the first acting position P1, the user first provides a resistance to the reset elastic member 40. The external force of the elastic restoring force pushes the grip 30 toward the head 20 to move the grip 30 from the first or second acting position P1, P2 relative to the outer casing 21 and along the imaginary axis L Up to the switching position P3 (as shown in FIG. 7), the positioning block 271 is located at the sliding slot 322 away from the first or second positioning slots 323, 324, and the grip 30 can be opposite to the housing 21 at this time. The rotation is centered on the imaginary axis L. Then, the user rotates the grip 30 to an angle corresponding to the first or second acting positions P1 and P2. When the grip 30 rotates, the positioning block 271 slides in the sliding slot 322, and the spherical body 283 is attached. Sliding on the outer surface 321 . Then, the user receives the external force, and the grip 30 receives the return elastic member 40. The elastic restoring force acts to move from the switching position P3 to the first or second acting positions P1, P2. The ratchet wrench 10 may also have the reset elastic member 40 and the sleeve 50, and the user may move the grip 30 from the switching position P3 to the first or second acting position P1, P2.

By the positional design of the positioning grooves 323, 324, 325, 326, and the arcuate edge 333 of the cam 332 corresponding to the central angle θ is greater than or equal to 90 degrees and less than 180 degrees (in the present embodiment, θ is 130 degrees), the user can rotate the grip 30 from the first acting position P1 to the second acting position P2 by rotating the grip 30 in a specific direction by about 90 degrees (from the fourth drawing) Rotate clockwise by about 90 degrees) or switch from the second acting position P2 to the first acting position P1 (from the sixth drawing, the counterclockwise direction is rotated by about 90 degrees).

Since the return elastic member 40 continues to push the grip 30 toward the head 20, the return elastic member 40 when the grip 30 is turned to the angle corresponding to the first or second acting positions P1, P2. The grip 30 is automatically moved to the first or second acting position P1, P2. Therefore, although the sliding groove 322 of the grip 30 is a ring that is easier to process, the user does not easily turn the grip 30 over the head. The angle corresponding to the first or second action positions P1, P2 is missed. Moreover, when the grip 30 is turned to the angle corresponding to the first or second acting positions P1, P2, the ball 283 enters the third or fourth positioning grooves 325, 326 from the outer surface 321 to generate a slight pause and sound. Therefore, the user can easily judge whether the grip 30 is rotated to an angle corresponding to the first or second acting positions P1, P2. In other words, the elastic positioning component 28 provides the function of assisting positioning and recognizing the position, and thus the ratchet wrench 10 may not be provided with the elastic positioning component 28.

In addition, the arcuate edge 333 of the cam 332 is centered on the imaginary axis L, and the vertical distance D1 between the imaginary axis L and the inner top surface 214 is greater than or equal to the radius of curvature R of the arcuate edge 333. The vertical distance D2 between the imaginary axis L and the inner bottom surface 215 It is smaller than the radius of curvature R of the arcuate edge 333. Therefore, when the user wants to switch the grip 30 from the first acting position P1 to the second acting position P2, the grip 30 can only be rotated clockwise (as viewed in the direction of FIG. 4), and cannot Rotating in a counterclockwise direction; when the user wants to switch the grip 30 from the second acting position P2 to the first acting position P1, the grip 30 can only be turned counterclockwise (from the direction of FIG. 6) Rotate and cannot turn clockwise.

In summary, when the user holds and operates the ratchet wrench 10 with one hand, the same hand can also be used to move and rotate the grip 30 relative to the outer casing 21 to apply the grip 30 to the first The two action positions P1 and P2 are switched to achieve the function of switching the direction of action of the ratchet wheel 22. Therefore, the ratchet wrench 10 is quite convenient to use, and the structure of the ratchet wrench 10 is relatively simple.

Finally, it must be explained again that the constituent elements disclosed in the foregoing embodiments are merely illustrative and are not intended to limit the scope of the present invention. Alternatives or variations of other equivalent elements should also be the scope of patent application of the present application. Covered.

10‧‧‧ Ratchet Wrench

20‧‧‧ head

21‧‧‧ Shell

211‧‧‧Shell

212‧‧‧ Cover

213‧‧‧ accommodating space

216‧‧‧ channel

217, 218‧‧‧ perforation

22‧‧‧ ratchet

23‧‧‧First card block

24‧‧‧Second card block

25, 26‧‧‧ cassette elastic parts

27‧‧‧ Positioning parts

271‧‧‧ Positioning block

28‧‧‧Flexible positioning components

281‧‧‧Fixed parts

282‧‧‧ Positioning elastic parts

283‧‧‧ sphere

30‧‧‧ Grip

31‧‧‧ grip

32‧‧‧ Department of Wear

321‧‧‧ outer surface

322‧‧‧Chute

323‧‧‧First positioning slot

324‧‧‧Second positioning slot

325‧‧‧third positioning slot

326‧‧‧4th positioning slot

End of 327‧‧‧

33‧‧‧Pushing Department

331‧‧‧ rod body

332‧‧‧ cam

34‧‧‧

40‧‧‧Reset elastic parts

50‧‧‧ sleeve

L‧‧‧ imaginary axis

Claims (11)

A ratchet wrench capable of one-handed operation and switching direction comprises: a head comprising a casing, the casing having a receiving space and a passage communicating with each other, the channel defining an imaginary axis, the head further The utility model comprises a ratchet wheel disposed in the accommodating space, a first card block, a second card block, and a second card that respectively pushes the first card block and the second card block toward the ratchet An elastic member, and a positioning block located in the passage; and a grip bar having a grip portion sequentially connected, a through portion passing through the passage of the head portion, and a receiving portion located in the receiving space The urging portion has an outer surface, and a sliding groove recessed from the outer surface and a first positioning groove and a second positioning groove communicating with the sliding groove; wherein the grip can be subjected to an external force And moving from the first active position and the second active position to the outer casing and along the imaginary axis to a switching position; when the holding rod is in the first acting position, the positioning block is located The first positioning slot, the first card block is subjected to the pushing The portion is pushed apart and separated from the ratchet; when the grip is in the second active position, the positioning block is located in the second positioning slot, and the second latching block is pushed by the pushing portion to be separated from the ratchet When the gripping rod is in the switching position, the gripping rod is rotatable relative to the outer casing and centered on the imaginary axis, and the positioning block slides in the sliding groove when the gripping rod rotates. The one-handed operation and the direction-switching ratchet wrench of claim 1, wherein the pushing portion of the grip has a cam having a circular arc-shaped edge centered on the imaginary axis; The outer casing has a pair of inner top surfaces and an inner bottom surface, and the vertical distance between the imaginary axis and the inner top surface is large And at or equal to the radius of curvature of the arcuate edge, the vertical distance of the imaginary axis from the inner bottom surface is smaller than the radius of curvature of the arcuate edge. The ratchet wrench capable of one-hand operation and switching direction according to the second aspect of the patent application, wherein the arc-shaped edge corresponding to the circular arc edge of the cam is greater than or equal to 90 degrees and less than 180 degrees. The ratchet wrench capable of single-handed operation and switching direction according to the first aspect of the patent application, further comprising a set of reset elastic members disposed on the grip rod, wherein the two ends of the return elastic member respectively abut the head The outer casing and the grip are configured to provide an elastic restoring force for moving the grip from the switching position to the first acting position and the second acting position. The ratchet wrench capable of single-handed operation and switching direction according to the fourth aspect of the invention, wherein the outer diameter of the wearing portion of the grip is smaller than the outer diameter of the grip portion to form a portion located in the wearing portion The step of the joint of the grip portion, the return elastic member abuts against the step. The ratchet wrench capable of single-handed operation and switching direction as described in claim 4, further comprising a sleeve sleeved on the grip and shielding the return elastic member. The ratchet wrench capable of single-handed operation and switching direction according to the first aspect of the patent application, wherein the sliding groove of the grip is annular. The one-handed operation and the direction-switching ratchet wrench of claim 1, wherein the outer casing of the head has a through hole communicating with the passage, and the head further comprises a positioning member fixed to the through hole. The positioning block is located at one end of the positioning member. The one-handed operation and the switching direction of the ratchet wrench according to the first aspect of the invention, wherein the wearing portion of the grip has a third positioning groove and a fourth positioning groove recessed from the outer surface, The head is further provided with a positioning elastic member and a ball pushed by the positioning elastic member. The ball is located in the third positioning groove when the holding rod is in the first acting position, and the ball is located at the first positioning slot. The second acting position is located in the fourth positioning slot. The one-handed operation and the direction-switching ratchet wrench according to claim 9, wherein the first positioning slot and the second positioning slot of the wearing portion of the gripping rod are from the sliding slot toward the pushing portion. The extending portion has a distal end facing the pushing portion, and the third positioning groove and the fourth positioning groove extend from the end toward the grip portion. The ratchet wrench capable of single-handed operation and switching direction according to claim 9, wherein the outer casing of the head has a through hole communicating with the passage, and the head further comprises a fixing member fixed to the through hole. The positioning elastic member and the ball system are disposed in the through hole.