TW201429637A - Adjustable ratchet wrench - Google Patents

Abstract

An adjustable ratchet wrench comprises a body having a head portion, a handle portion and a reversing unit, a ratchet wheel pivoted to the head portion and includes a ratchet portion, a pivot groove and a guiding hole, an adjusting element pivoted to the pivot groove and includes a rotating portion and an adjusting groove, two clamping blocks relatively disposed at the ratchet wheel and the adjusting element and includes a clamping portion, a neck portion and an expansive portion, respectively, and a spring disposed between the clamping blocks for engaging the expansive portions with a groove surface of the adjusting groove. Thereby, the distance between the clamping portions can be changed by rotating the rotating portion to adjust the relative position of the clamping blocks in the adjusting groove and make the neck portions move in the guiding hole, thus improving the applicability of the wrench.

Description

Variable grip size ratchet wrench

The invention relates to a ratchet wrench, and in particular to a ratchet wrench of variable grip size.

Please refer to the first and second figures. This is a conventional ratchet wrench structure, mainly comprising a ratchet 12 and a reversing unit 13 disposed in the head 11 of the tool, and the reversing unit 13 is disposed therein. Two latching blocks 131, 132, two springs 133, a reversing block 134, and a dial 135 disposed outside the head 11 and interlocking with the reversing block 134 are disposed in the tool head 11. The user can insert a screw 14 into the slot 121 at one end of the ratchet wheel 12 to perform the locking operation of the screw 14.

When the one-way torque operation of the ratchet wrench is performed, the reversing block 134 can be rotated to one side by the dial button 135 to be as shown in FIG. 2, and the reversing block 134 pushes the card tooth on one side. The block 131 is disengaged from the ratchet 12 so that the ratchet 12 meshes only with the latching block 132 on the other side. At this time, the ratchet 12 can only rotate freely in the direction of the arrow as shown in FIG. 2, and the ratchet 12 cannot Rotate in the direction of the other side to provide one-way working torque.

However, the above-mentioned ratchet wrench can only perform the operation of the reversing drive, and the locking and unloading operation of the plurality of size screws 14 cannot be used, that is, the slot 121 of the ratchet wheel 12 of the ratchet wrench is fixed in size and can only be adapted to the corresponding Size screw 14 when there are different sizes of screws When the firmware 14 is to be screwed, a ratchet wrench of a ratchet 12 slot 121 of different sizes is required to highlight the defect that the ratchet wrench has insufficient applicability; in addition, the one-way ratchet wrench also has the aforementioned defect of insufficient applicability.

Accordingly, how to develop a ratchet wrench that solves the above-mentioned drawbacks is the motivation of the present invention.

It is an object of the present invention to provide a ratchet wrench of variable grip size that primarily enhances the applicability of the ratchet wrench.

In order to achieve the foregoing object, a variable-clamp ratchet wrench according to the present invention includes: a body having a head, a handle connecting the head, and a head disposed on the head a reversing unit; a ratchet wheel pivotally disposed on the head; and having a ratchet portion engaged with the reversing unit, a pivot groove having a groove bottom surface, and a guide disposed on a bottom surface of the pivot groove An adjusting member pivotally disposed on the pivoting groove and having a rotating portion and an adjusting groove facing the guiding strip hole, the adjusting groove having a non-circular groove wall surface; and two clamping blocks The ratchet wheel and the adjusting member are oppositely disposed, and each has a clamping portion located outside the head portion, a neck portion connecting the clamping portion and located in the guiding strip hole, and connecting the neck portion And a portion of the expansion groove that is located in the adjustment groove, and the expansion portion is engaged with the wall surface of the adjustment groove; a spring is disposed between the expansion portions of the two clamping blocks, so that the expansion portion and the adjustment groove The wall surface is retained; thereby rotating the rotating portion of the adjusting member to adjust the expansion portion of the two clamping blocks in the adjusting groove Position, while allowing the two clamping block along the neck hole of the guide bar is displaced to vary the distance between the two clamping portions.

Preferably, the adjusting member further comprises at least two first card recesses which are oppositely disposed on the wall surface of the adjusting slot, and two second card recesses which are oppositely disposed on the wall surface of the adjusting slot, and The distance between the recesses of the first card is different from the distance between the recesses of the two second cards, and the two clamping blocks further have a protrusion protruding outside the expansion portion and simultaneously with the two first card recesses or the second card A card protrusion that is recessed by the recesses.

Preferably, the two clamping blocks further have a recess recessed inside the expanding portion, and the spring is a compression spring and has two ends respectively embedded in the groove.

Preferably, the guide strip hole of the ratchet has a large diameter section and a small diameter section extending from both sides of the large diameter section, and the large diameter section is provided for the expansion of each clamping block, the small diameter The diameter segments are permeable to the neck of each of the clamping blocks.

The present invention has been described in connection with the preferred embodiments of the present invention in accordance with the accompanying drawings.

11‧‧‧ head

12‧‧‧ ratchet

121‧‧‧ slots

13‧‧‧Commutation unit

131, 132‧‧‧ card tooth block

133‧‧ ‧ spring

134‧‧‧ commutation block

135‧‧ ‧ buttons

14‧‧‧Spiral firmware

20‧‧‧ body

21‧‧‧ head

22‧‧‧ handle

23‧‧‧Commutation unit

30‧‧‧ratchet

31‧‧‧ ratchet

32‧‧‧ pivot slot

321‧‧‧Slot bottom

33‧‧‧ Guide hole

331‧‧‧ Large diameter section

332‧‧‧Small path section

34‧‧‧ Ring Department

35‧‧‧C buckle

40‧‧‧Adjustment

41‧‧‧Rotating Department

42‧‧‧Adjustment slot

421‧‧‧ slot wall

422‧‧‧ first card recess

423‧‧‧ Second card recess

43‧‧‧C buckle

44‧‧‧flat washer

45‧‧‧ Wave elastic washer

46‧‧‧ Limit buckle

50‧‧‧Clamping block

51‧‧‧Clamping Department

52‧‧‧ neck

53‧‧‧Expanding

54‧‧‧ card convex

55‧‧‧ Groove

60‧‧‧ Spring

61‧‧‧End

71, 72‧‧‧ Screw firmware

Figure 1 is a perspective view of a conventional ratchet wrench.

Figure 2 is a partial cross-sectional view of a conventional ratchet wrench.

Figure 3 is a perspective exploded view of the present invention.

Figure 4 is a perspective assembled view of the present invention.

Fig. 5 is a perspective exploded view of the present invention showing the state of decomposition of the ratchet, the adjusting member, the two holding blocks, and the spring.

Figure 6 is a partial cross-sectional view of the present invention showing the state of the first grip size.

Figure 7 is a partial bottom plan view of the present invention showing the state of the first grip size.

Figure 8 is a partial bottom view of the present invention showing the state of the first grip size.

Figure 9 is a partial cross-sectional view of the present invention showing the state of the second grip size.

Figure 10 is a partial bottom plan view of the present invention showing the state of the second grip size.

Figure 11 is a partial bottom plan view of the present invention showing the state of the second grip size.

As shown in FIG. 3 to FIG. 8 , a ratchet wrench of a variable clamping size according to an embodiment of the present invention needs to be described first. In this embodiment, the ratchet wrench is a bidirectional ratchet wrench, but To be limited, the ratchet wrench can also be a one-way ratchet wrench. The ratchet wrench is mainly composed of a body 20, a ratchet 30, an adjusting member 40, two clamping blocks 50, and a spring 60. The body 20 has a head 21 and a head 21 connected thereto. The handle portion 22 and a reversing unit 23 disposed on the head portion 21; since the reversing unit 23 is a conventional member, and the manner of actuation thereof is the same as the prior art, and is not the focus of the present invention, The detailed structure and operation of the component will not be described in detail.

The ratchet 30 is pivotally disposed on the head portion 21 and has a ratchet portion 31 that engages with the reversing unit 23, a pivot slot 32 having a slot bottom surface 321 , and a bottom surface 321 disposed on the slot 32 of the pivot slot 32. In the present embodiment, the guide strip hole 33 of the ratchet 30 has a large diameter section 331 and a small diameter section 332 extending from both sides of the large diameter section 331. In addition, the ratchet wheel 30 has one end. There is a ring portion 34 for abutting against the head portion 21, and the other end is pivotally mounted on the head portion 21 by a C-shaped buckle 35.

The adjusting member 40 is pivotally disposed on the pivoting groove 32, and has a rotating portion 41, and an adjusting groove 42 facing the guiding strip hole 33, the adjusting groove 42 has a non-circular groove wall surface 421; In this embodiment, the adjusting member 40 further includes two first recessed portions 422 which are oppositely disposed on the slot wall surface 421 of the adjusting slot 42 and two second recessed portions which are oppositely disposed on the slot wall surface 421 of the adjusting slot 42 423, and a distance between the two first card recesses 422 is greater than between the two second card recesses 423 The adjusting member 40 is pivotally disposed on the pivot slot 32 of the ratchet 30 by a C-shaped buckle 43, a flat washer 44, a wave-shaped elastic washer 45, and a limit buckle 46.

The two clamping blocks 50 are oppositely disposed on the ratchet wheel 30 and the adjusting member 40, and each has a clamping portion 51 located outside the head portion 21, and is connected to the clamping portion 51 and located at the ratchet wheel 30. a neck portion 52 in the guiding strip hole 33, a expanding portion 53 connecting the neck portion 52 and located in the adjusting groove 40 of the adjusting member 40, and the expanding portion 53 is engaged with the groove wall surface 421 of the adjusting groove 42; In the example, the two clamping blocks 50 further have a card protrusion 54 protruding from the outside of the expansion portion 53 and simultaneously engaging with the two first card recess 422 or the second card recess 423, and a recessed portion a groove 55 on the inner side of the expansion portion 53 , and the clamping block 50 is firstly passed through the large diameter portion 331 of the guide strip hole 33 by the expansion portion 53 and the neck portion 52 is correspondingly assembled. The small diameter section 332 is then displaced toward the small diameter section 332, so that the neck portion 52 of the clamping block 50 is placed in the small diameter section 332, and the guiding strip hole 33 is located in the expansion. The assembly of the clamping block 50 is completed between the portion 53 and the clamping portion 51.

The spring 60 is disposed between the enlarged portions 53 of the two clamping blocks 50, and the card convex portions 54 provided in the respective expanding portions 53 and the two first card concave portions 422 provided on the groove wall surface 421 of the adjusting groove 42 Or the second card recess 423 is kept in the clamping; in the embodiment, the spring 60 is a compression spring and has two end portions 61 respectively embedded in the groove 55.

The above description is the structure and configuration description of each main component of the embodiment of the present invention. Please refer to the following description for the mode of operation and efficacy of the present invention.

Accordingly, the present invention has at least two adjustments to the grip size.

The first clamping size is such that the two clamping blocks 50 are pushed by the spring 60, and the card convex portions 54 provided on the clamping blocks 50 are locked in the second portion of the adjusting member 40. One card The recessed portion 422, at this time, the clamping portion 51 of the two clamping blocks 50 is separated from the first clamping distance, so that the screw 71 of the first size can be locked and unloaded.

The second clamping size: as shown in FIGS. 8 to 11, the rotating portion 41 of the adjusting member 40 is rotated to rotate the adjusting groove 42 of the adjusting member 40. At this time, due to the two clamping blocks 50 The neck portion 52 is limited to the guide strip hole 33 of the ratchet 30. Therefore, the two clamping blocks 50 are linearly adjacent to or away from each other along the curve of the groove wall surface 421 of the adjusting member 40. When the card protrusions 54 of the two clamping blocks 50 are separated from the two card recesses 422 and the two card recesses 423 are engaged with each other, the clamping portions 51 of the two clamping blocks 50 are spaced apart from each other. The clamping distance, and because the distance between the two first card recesses 422 is greater than the distance between the two second card recesses 423, the second clamping generated by the clamping portion 51 of the two clamping blocks 50 The first clamping distance is different (i.e., less than), and the second size screw 72 can be locked and unloaded.

Accordingly, the present invention rotates the rotating portion 41 of the adjusting member 40 to adjust the relative position of the expanding portion 53 of the two clamping blocks 50 in the adjusting slot 40 of the adjusting member 40, while allowing the two clamping blocks 50 to be The neck portion 52 is displaced along the guiding strip hole 33 to change the distance between the two clamping portions 51, and can be used as a locking operation for a plurality of different sizes of screws 71, 72, thereby improving the application of the ratchet wrench. Sexual purpose.

In the above, the above embodiments and the illustrations are only the preferred embodiments of the present invention, and the scope of the present invention is not limited thereto, that is, the equal variations and modifications made by the scope of the patent application of the present invention are It should be within the scope of the patent of the present invention.

30‧‧‧ratchet

31‧‧‧ ratchet

33‧‧‧ Guide hole

331‧‧‧ Large diameter section

332‧‧‧Small path section

34‧‧‧ Ring Department

40‧‧‧Adjustment

41‧‧‧Rotating Department

42‧‧‧Adjustment slot

421‧‧‧ slot wall

422‧‧‧ first card recess

423‧‧‧ Second card recess

50‧‧‧Clamping block

51‧‧‧Clamping Department

52‧‧‧ neck

53‧‧‧Expanding

54‧‧‧ card convex

55‧‧‧ Groove

60‧‧‧ Spring

61‧‧‧End

Claims (9)

A ratchet wrench of variable clamping size, comprising: a body having a head, a handle connecting the head, and a reversing unit disposed on the head; a ratchet pivoting on the head And having a ratchet portion engaged with the reversing unit, a pivot slot having a bottom surface of the slot, and a guiding strip hole disposed on a bottom surface of the pivot slot; an adjusting member pivotally disposed on the pivot slot And a rotating portion and an adjusting groove facing the guiding strip hole, the adjusting groove has a non-circular groove wall surface; the two clamping blocks are oppositely disposed on the ratchet wheel and the adjusting member, And each has a clamping portion located outside the head, a neck portion connecting the clamping portion and located in the guiding strip hole, and a protruding portion connecting the neck portion and located in the adjusting groove, the expanding portion And engaging with the wall surface of the adjusting slot; a spring is disposed between the expanding portions of the two clamping blocks, so that each of the expanding portions and the adjusting slot wall surface are locked; thereby, the adjusting member is rotated a rotating portion for adjusting a relative position of the two clamping block expansion portions in the adjusting groove, and let the two clamping block necks along the guiding strip hole Move to vary the distance between the two clamping portions. The ratchet wrench of the variable clamping size according to claim 1, wherein the adjusting member further comprises at least two first card recesses oppositely disposed on the wall surface of the adjusting slot, and two oppositely disposed at The second card recess of the wall surface of the slot is adjusted, and the distance between the recesses of the two first cards is different from the distance between the recesses of the second card. The two clamping blocks are further protruded from the outside of the expansion. And at the same time, the card protrusions are mutually engaged with the two first card recesses or the second card recesses. A ratchet wrench of variable clamping size as described in claim 1, wherein the two clamping blocks Further, there is a groove recessed inside the expansion portion, and the spring is a compression spring and has two ends respectively embedded in the groove. The ratchet wrench of the variable clamping size according to claim 1, wherein the guiding strip hole of the ratchet has a large diameter section and a small diameter section extending from both sides of the large diameter section, the large diameter The segments are provided for the expansion of each of the clamping blocks, the small diameter segments being permeable to the neck of each of the clamping blocks. A ratchet set of variable grip size, suitable for being provided in a ratchet wrench body, the ratchet set comprising: a ratchet wheel disposed on the ratchet wrench body and comprising a pivot groove having a groove bottom surface, and a a guiding strip hole on the bottom surface of the pivoting groove; an adjusting member pivotally disposed on the pivoting groove, and having a rotating portion and an adjusting groove facing the guiding strip hole, the adjusting groove having a non-circular shape a slot wall surface; the two clamping blocks are oppositely disposed on the ratchet wheel and the adjusting member, and each has a clamping portion located outside the head portion, and is connected to the clamping portion and located in the guiding strip hole a neck portion, a expansion portion connecting the neck portion and located in the adjustment groove, the expansion portion is engaged with the wall surface of the adjustment groove; a spring is disposed between the expansion portions of the two clamping blocks, so that each The expansion portion is locked with the adjusting groove wall surface; thereby rotating the rotating portion of the adjusting member to adjust the relative position of the two clamping block expanding portions in the adjusting groove, and allowing the two clamping blocks The neck is displaced along the guide strip aperture to change the distance between the two clamping portions. The ratchet set of the variable clamping size according to claim 5, wherein the adjusting member further comprises at least two first card recesses oppositely disposed on the wall surface of the adjusting slot, and two oppositely disposed at The second card recess of the wall surface of the slot is adjusted, and the distance between the recesses of the two first cards is different from the distance between the recesses of the second card. The two clamping blocks are further protruded from the outside of the expansion. And At the same time, the card protrusions are mutually engaged with the two first card recesses or the second card recesses. The ratchet set of variable clamping size according to claim 5, wherein the two clamping blocks further have a recess recessed inside the expanding portion, the spring being a compression spring and having two separate inserts Located at the end of the groove. The ratchet set of variable clamping size according to claim 5, wherein the guide strip hole of the ratchet has a large diameter section and a small diameter section extending from both sides of the large diameter section, the large diameter The segments are provided for the expansion of each of the clamping blocks, the small diameter segments being permeable to the neck of each of the clamping blocks. The variable grip size ratchet set of claim 5, wherein the ratchet wrench body has a head, a handle connecting the head, and a reversing unit disposed on the head. The ratchet further includes a ratchet portion that engages the commutation unit.