TW201311400A - Ratchet-action wrench - Google Patents

Abstract

The ratchet-action wrench of the present invention includes a handle, a pivotable head portion, a movable jaw, and an adjustment mechanism. The head portion is disposed upon the handle. The movable jaw is slidably disposed on the head portion. The adjustment mechanism includes an axle and a worm. The axle is slidably disposed on the head portion. The worm is disposed on the axle, being able to rotate for moving the movable jaw, so that the opening of the wrench is adjustable. When the wrench moves back and forth, the worm and the movable jaw can move together so as to achieve said ratchet-action. The axis is formed with a groove on one end thereof. A recovery mechanism is disposed in the groove to push axle. Thus, the recovery mechanism of the wrench is received and hidden by the axle and the head portion. Motion of the movable jaw or operation the wrench is smoothened by dust-proof function of the axle and the head portion.

Description

Reciprocating adjustable wrench

The present invention relates to a spanner wrench, and more particularly to a reciprocating adjustable spanner.

The reciprocating adjustable spanner of the prior art can be referred to the adjustable wrench described in U.S. Patent No. 6,418,819, which has a worm and allows the user to adjust the opening size of the wrench for holding nuts of various sizes. The movable mechanism is further disposed in the wrench. When the user turns the wrench in the same direction, the wrench can be engaged to rotate the nut. When the user turns the wrench in the other direction, the activity of the wrench can be outward. Sliding without turning the nut, the user can screw or loosen the nut by reciprocating the wrench, which has a convenient use effect.

However, the wrench provided by the aforementioned patent has the problems of less smooth use and higher production cost.

The volute in the hand of the plate is directly pressed against the spring, and the spring is directly exposed on one side of the volute, so that dirt or dust can easily get stuck against the spring, and the smoothness of the spring and the volute can be reduced. In addition, the handle in the wrench has a bump for engaging the volute, and the bump needs to swing with the shank, so that the bump is separated from the head and the volute or the yoke is engaged with the shank. It is easy to get stuck with the head when swinging, which further reduces the smoothness of the wrench.

In addition, the head of the wrench is provided with a curved hole for the spring, but the opening of the curved hole needs to be formed by other processing after the head is formed, so that the production steps of the wrench head are complicated and difficult. High, while increasing the overall production cost of the wrench.

The main object of the present invention is to provide a reciprocating adjustable wrench having a smooth use effect.

To achieve the above object, the present invention provides a reciprocating adjustable wrench comprising a handle, a head, a movable jaw, an adjustment mechanism, a head return mechanism and a shaft reset mechanism.

The handle has a connecting end and a tail end, and the connecting end is further provided with a protruding stud.

The head is formed with a fixed cymbal, a sliding slot, a receiving slot, a first insertion hole, a second insertion hole and a positioning hole, and the accommodating groove communicates with the sliding slot, the first insertion hole and the first insertion hole The second jacks are respectively connected to the accommodating slots, and the first jacks and the second jacks are respectively located at two sides of the accommodating slot, and the first jack is coaxial with the second jack, and the positioning is The hole is connected to the first insertion hole, and the head is swingably disposed at the connection end, so that the head can swing between the first position and the second position relative to the handle.

The activity is slidably disposed in the chute, so that the movable jaw forms a jaw with the fixed jaw, and the movable jaw has a row of teeth.

The adjusting mechanism includes a worm and a shaft, the worm has an engaging portion and a shaft hole, and the volute is received in the accommodating groove to engage the engaging portion with the tooth row, the shaft has a large diameter a segment, a small diameter segment and an abutting top portion, the abutting top portion being located between the large diameter segment and the small diameter segment, the large diameter segment being inserted into the first insertion hole, the small diameter segment being disposed in the shaft hole And being inserted into the second insertion hole, the abutting top abuts against an end of the volley away from the second insertion hole, the large diameter section forming a slot, the slot being located at the large diameter section away from the small diameter section An end of the shaft defines an axis along which the shaft and the volley are reciprocally slidable relative to the head, and the movable cymbal is slid along the chute as the volley slides along the axis.

When the volley slides away from the second insertion hole, the volley abuts against the abutting top, so that the shaft slides with the volute, and the yoke abuts against the second insertion hole The worm causes the volley to slide with the shaft. The worm can be rotated about the axis of the shaft to urge the engaging portion against the row of teeth to slide the movable jaw along the sliding slot to open or close the opening.

The head return mechanism abuts the handle and the head, the head return mechanism providing an elastic force to cause the head to have a tendency to reset toward the first position.

The shaft reset mechanism is received in the first insertion hole and the slot, and the shaft reset mechanism provides another elastic force, so that the shaft has a tendency to slide toward the second insertion hole.

When the head is in the first position, the protrusion is inserted into the first insertion hole through the positioning hole, so that the protruding column can block the sliding path of the shaft. When the head is in the second position, the protrusion and the first insertion hole are separated from each other, and the shaft can slide away from the second insertion hole.

Further, when the head swings between the first position and the second position, the protruding post is inserted into the positioning hole and cannot be separated from the positioning hole.

Therefore, the shaft returning mechanism of the present invention is accommodated in the first insertion hole and the slot, and is not directly exposed, so as to avoid being contaminated by dirt or dust, and maintaining a smooth and smooth use effect. Furthermore, the stud can be inserted into the positioning hole to avoid accidentally snapping the stud to the head, and further improve the smoothness of use of the present invention.

The following is a description of the possible embodiments of the present invention, and is not intended to limit the scope of the invention as claimed.

1 to 3, the present invention provides a reciprocating adjustable wrench comprising a handle 1, a head 2, a movable jaw 3, an adjustment mechanism 4, a head return mechanism and a shaft reset mechanism, and A locking mechanism 7 can be further included.

The handle portion 1 has a connecting end and a tail end. The handle portion 1 can form a hanging hole 11 for hanging at the tail end, and can form a groove 12 extending in the longitudinal direction of the handle portion 1 so as to be appropriate. The weight of the handle 1 is reduced. The shank 1 has a stud 13 protruding from the connecting end, wherein the stud 13 may be integrally formed from the shank 1 or may be as shown in FIG. 2, but assembled and fixed by the pin 14 The handle member, more specifically, the handle portion 1 can form an end slot 15 at the joint end, and the handle portion 1 has a stop pin 14 having a top portion 141 and a bottom portion 142. A fixing pin 16 is inserted into the end slot 15 , and the bottom 142 and the blocking pin 14 are swingable in the end slot 15 , wherein the bottom 142 can be tapered toward an end away from the top 141 The bottom portion 142 or the stop pin 14 is relatively easy to oscillate, and the top portion 141 protrudes from the end groove 15 to form the stud 13 . The protrusion 13 can form an inclined surface 131. The connecting end may further have two arm portions 17, and the other side of the two arm portions 17 is formed with a through hole 171 for the insertion of the plug 51.

The head 2 is formed with a fixed cymbal 21, a sliding slot 22, a receiving slot 23, a first insertion hole 24, a second insertion hole 25 and a positioning hole 26. Preferably, the head portion can have One shoulder 27 . The first insertion hole 24 and the second insertion hole 25 are respectively communicated with the accommodating groove 23, and the first insertion hole 24 and the second insertion hole are communicated with the second insertion hole 25 is located on the two sides of the accommodating slot 23, and the first insertion hole 24 is coaxial with the second insertion hole 25. In the embodiment, the first insertion hole 24 extends in a direction opposite to the second insertion hole 25. Through the head 2, the shaft 42 and other parts can be assembled from the first insertion hole 24. However, in other possible embodiments of the present invention, the second insertion hole 25 can also be changed toward the first insertion hole. The opposite direction of 24 extends through the head 2 for assembly of other parts. The head 2 can further have a stopper 28 that can be fixed by a screw lock and located at an end of the first insertion hole 24 away from the second insertion hole 25 for assembly of other parts into the first insertion hole 24 The first jack 24 is then covered. In this embodiment, the inner diameter of the second insertion hole 25 is slightly smaller than the inner diameter of the first insertion hole 24. However, in other possible embodiments of the present invention, the first insertion hole 24 and the second insertion hole are also possible. The receptacles 25 have the same inner diameter, and it is also possible to place an annular spacer, snap ring or other similar barrier in the second receptacle 25. The positioning hole 26 is in communication with the first insertion hole 24 . The head 2 is swingably disposed at the connecting end such that the head 2 is swingable relative to the handle 1 between a first position and a second position. More specifically, the head 2 has a shoulder. The shoulder portion 27 is provided with a pivot 271. The pivot shaft 271 is disposed on the two arm portions 17, so that the shoulder portion 27 is swingably disposed between the two arm portions 17, and the head portion 2 is provided. The handle portion 1 can be swung relative to the handle portion 1, and the shoulder portion 27 can be additionally formed with a notch 272. Preferably, the notch 272 is located at one side edge of the shoulder portion 27. In this embodiment, the handle portion 1 is provided with two arm portions 17 and has a shoulder portion 27 below the head portion 2 for pivotally clamping the shoulder portion 27 between the two arm portions 17, however, it is changed to the head. The portion 2 is provided with two arm portions, and the handle portion 1 has a shoulder portion, and the coupling mechanism of the head portion 2 and the handle portion 1 is mutually interchangeable.

The movable raft 3 is slidably disposed on the sliding slot 22, and the movable cymbal 3 forms a jaw with the fixed cymbal 21 for clamping a bolt head, a nut or the like, and the movable cymbal 3 has a Tooth row 31.

The adjustment mechanism 4 includes a volute 41 and a shaft 42. The worm 41 has an engaging portion 411 and a shaft hole 412. The worm 41 is received in the accommodating groove 23, and the engaging portion 411 corresponds to the tooth row 31 and meshes with the tooth row 31. The shaft 42 has a large diameter section 421 , a small diameter section 422 and an abutting top 423 . The small diameter section 422 extends axially from the large diameter section 421 to make the large diameter section 421 and the small diameter section 422 . A stepped surface is formed between the large diameter portion 421 and the small diameter portion 422. The large diameter portion 421 further defines a slot 424. The 424 is located at the large diameter section 421 and away from the end of the small diameter section 422. Preferably, the slot 424 is a cylindrical hole. An inclined surface 425 may be additionally formed on the end of the shaft 42 away from the second insertion hole 25, as shown in FIG. 3B. Preferably, the inclined surface 425 of the shaft 42 may be a tapered surface. The large diameter section 421 is inserted into the first insertion hole 24, and the small diameter section 422 is inserted into the shaft hole 412 of the volute, and is inserted into the second insertion hole 25, so that the abutting top 423 is abutted. The end of the worm 41 is away from the end of the second insertion hole 25.

In the above, the shaft 42 defines an axis along which the shaft 42 and the worm 41 can reciprocate relative to the head 2, and more particularly, when the worm 41 faces away from the second socket. When the slider 25 slides, the worm 41 abuts against the abutting top 423, so that the shaft 42 slides with the volley 41. When the shaft 42 slides toward the second insertion hole 25, the apex 423 abuts. In the worm 41, the worm 41 is slid with the shaft 42. Further, since the engaging portion 411 of the volute 41 is engaged with the tooth row 31 of the movable cymbal 3, the movable cymbal 3 will also slide along the sliding groove 22 as the volute 41 slides along the axis. In addition, the worm 41 is rotatable about the axis of the shaft 42 and can be pushed against the tooth row 31 by the engaging portion 411 to slide the movable jaw 3 along the sliding slot 22 to open or close the opening.

The head return mechanism abuts the handle 1 and the head 2, the head return mechanism provides an elastic force to cause the head 2 to have a tendency to swing toward the first position, more specifically, the head The reset mechanism includes a latch 51 and a first elastic member 52. The latch 51 is disposed through the two through holes 171 on the side of the arm portion 17 of the handle portion 1 and the notch 272 of the shoulder portion 27 of the head portion 2, The first elastic member 52 is received in the notch 272 such that the first elastic member 52 abuts against the latch 51 and the shoulder portion 27.

The shaft reset mechanism is disposed in the first insertion hole 24 and the slot 424 of the shaft 42. The shaft return mechanism provides another elastic force, so that the shaft 42 has a sliding direction toward the second insertion hole 25. The trend, more specifically, the shaft return mechanism includes a second resilient member 61 that is received in the first receptacle 24 and the slot 424 such that the shaft return mechanism abuts the stop 28 of the head 2. With the shaft 42 , the shaft 42 is pushed against the second insertion hole 25 . Preferably, the second elastic member 61 has a cylindrical shape, such as a coil spring, so that the shape of the second elastic member 61 can be Cooperating with the shape of the slot 424.

The locking mechanism 7 is for the user to switch to restrict the swing between the handle 1 and the head 2 for switching, so that the handle 1 and the head 2 are released to be relatively swingable or locked to be incapable of relative swinging. . More specifically, the locking mechanism 7 includes a switching member 71, a third elastic member 72 and a positioning member 73. The handle portion 1 is formed with a switching hole 18 and a side hole 19. The side hole 19 communicates with the switching hole 18. The head portion 2 is formed with a card slot 273. The position of the card slot 273 corresponds to the switching hole 18. As shown in FIG. 3, preferably, the card slot 273 is located below the notch 272 of the shoulder 27 of the head 2. The switching member 71 is formed with a plurality of slots 711 and two positioning slots 712. The switching member 71 is rotatably disposed in the switching hole 18, and the switching member 71 is engaged with the card slot 273, so that the switching member 71 is locked. The head 2 is between the handle 1 and the handle 1. The switching member 71 can further have an outwardly extending lever 713, which can be used to drive the switching member 71 to rotate, so that the slot 711 of the switching member 71 corresponds to the slot 273, and the switching member 71 and the head When the portion 2 is separated, the head 2 can be released to be rotatable relative to the handle 1. The third elastic member 72 and the positioning member 73 are received in the side hole 19, and the handle portion 1 may further have an end cover 191 which is screwed and fixed to cover the side hole 19. The three elastic members 72 are abutted between the positioning member 73 and the end cover 191, so that the positioning member 73 abuts against the switching member 71. When the switching member 71 rotates, the positioning member 73 can be switched and sequentially clicked on the locking member 71. The two positioning grooves 712 are such that the switching member 71 needs to be slightly applied to be rotated for switching.

With the above device, the head 2 and the handle 1 are relatively rotatable. Referring to FIG. 3 , when the head 2 is in the first position, the protrusion 13 is inserted into the first insertion hole 24 via the positioning hole 26 , and the protrusion 13 can be directly engaged with the large diameter section of the shaft. 421, the protrusion 13 can block the sliding path of the shaft, wherein, referring to FIG. 3A to FIG. 3C, the protrusion 13 and the shaft 42 can abut each other with their respective inclined faces to make the protrusion The post 13 is further pushed against the shaft 42 so that the inclined faces 131, 425 and the axis have an angle of between 45 and 87 degrees. Preferably, the angle of the included angle is 65. Between 75 degrees. Referring to FIG. 1 to FIG. 3 , after the protrusion 13 is inserted into the first insertion hole 24 , the shaft 42 will not be freely slidable, and the shaft 42 is further clamped to the volute 41, and the worm 41 is coupled. Not free to slide, the jaws formed by the movable jaws 3 and the fixed jaws 21 can be used to clamp the fasteners 8 for the user to rotate the fastener 8 in a clockwise direction. At this time, the locking mechanism 7 is also switchable to lock the head 2 and the handle 1.

Referring to FIG. 4, the locking mechanism is switchable to release the head 2 and the handle 1, and thereafter, when the user turns the handle 1 in the counterclockwise direction to swing the handle 1 and the head 2 relative to each other, The latch 51 will slide along the notch 272 relative to the head 2 to slide the head 2 to the second position. At this time, the stud 13 is pulled outward to separate the stud 13 from the first insertion hole 24, and the sliding path of the shaft 42 is not restricted by the stud 13 so that the shaft 42 can face away from the second The insertion hole 25 slides, and the worm 41 and the movable cymbal 3 can slide together, and the jaw formed by the fixed cymbal 21 and the movable cymbal 3 is not enlarged due to the large diagonal distance of the fastener 8 The fasteners 8 are clamped or snapped.

Wherein, the length of the protruding post 13 protruding from the connecting end of the handle portion 1 can be set to be larger than the maximum sliding stroke of the latch 51 sliding along the notch 272, and the maximum sliding stroke refers to the longest path length through which the sliding can be performed. When the head 2 is swung relative to the shank 1 between the first position and the second position, the stud 13 is inserted into the positioning hole 26 and cannot be separated from the positioning hole 26, thereby preventing the positioning of the stud 13 The holes 26 are arbitrarily inserted and inconvenienced, resulting in accidental carding or unsmooth use.

When the user no longer pulls the handle 1 or rotates the handle 1 in the clockwise direction, the second elastic member 61 of the shaft return mechanism randomly pushes the shaft 42 toward the second insertion hole 25 The sliding direction causes the worm 41 to slide together with the movable cymbal 3, and the latch 51 and the first elastic member 52 in the head returning mechanism push against the head 2 and the shank 1 to swing the head 2 to the first position. The head 2, the handle 1, the movable jaw 3, the worm 41 and the shaft 42 are returned to the position shown in FIG.

Referring to FIG. 3, the size of the accommodating groove 23, the shaft 42 and the worm 41 in the reciprocating adjustable wrench of the present invention may have the following relationship in a natural state that is not subjected to an external force:

m>L _max *15.5%;

n>L _max *15.5%;

Where l _max is the width of the jaw when the worm 41 rotates to slide the movable cymbal 3 along the sliding slot to the farthest away from the fixed cymbal 21, where m is the accommodating groove 23 and the worm 41 along the The length difference of the axis, wherein n is the length of the small diameter section 422 inserted in the second insertion hole 25, preferably, n is further greater than m, so that the jaw is due to the shaft 42 and the worm 41 When the movable cymbal 3 is slid and opened, the shaft 42 is not arbitrarily separated from the second insertion hole 25, and the accommodating groove 23 does not excessively restrict the sliding stroke of the volute 41.

Summarizing the above embodiments, the present invention can be used by a user to turn a nut, a bolt head, or other fasteners. In a state where the locking mechanism is switched to release, the user only needs to reciprocate the handle, and does not have to repeat the sleeve. The action of entering and taking out is a waste of time and effort, and the fastener can be quickly rotated in a single direction, and the nut can be easily locked or relaxed, which has a convenient use effect.

The present invention is to accommodate the shaft return mechanism or the second elastic member 61 therein in the slot and the first insertion hole, and can accommodate the head return mechanism or the first elastic member 52 therein in the slot. It can avoid the exposure of each elastic member, and can reduce the situation that dust and dirt get stuck against the elastic member, reduce unnecessary wear or get stuck by dirt, and have smooth operation effect.

In the present invention, there is a notch 272 for receiving the first elastic member 52 and for the insertion of the pin 51. The notch 272 is located at the edge of the shoulder 27 below the head, and only needs to be forged and directly cut during production. It can be processed and formed without additional stamping process, and has the characteristics of being easy to produce, and can reduce the production cost of the reciprocating adjustable wrench.

In the present invention, the shaft 42 and the stud 13 can each have an inclined surface, and when the protrusion 13 enters the first insertion hole 24, the protrusion 13 can be slightly pushed against the stop shaft 42 to further improve the reciprocating motion. The smoothness of the wrench.

In summary, the reciprocating adjustable wrench provided by the invention has the advantages of smooth operation and use and low processing and production cost, and has the effect of improving the patent requirements according to the national patent law, and filing a patent application according to law. In view of the fact that the bureau has approved the patent as soon as possible, it is really sensible.

1. . . Handle

11. . . Hanging hole

12. . . Groove

273. . . Card slot

28. . . Stoppers

3. . . Activity颚

13. . . Tab

131. . . Inclined surface

14. . . Stop pin

141. . . top

142. . . bottom

15. . . End slot

16. . . Fixed pin

17. . . Arm

171. . . perforation

18. . . Switch hole

19. . . Side hole

191. . . End cap

2. . . head

twenty one. . . Fixed 颚

twenty two. . . Chute

twenty three. . . Locating slot

twenty four. . . First jack

25. . . Second jack

26. . . Positioning hole

27. . . Shoulder

271. . . Pivot

272. . . Missing slot

31. . . Tooth row

4. . . Adjustment mechanism

41. . . Corm

411. . . Meshing part

412. . . Shaft hole

42. . . Shaft

421. . . Large diameter section

422. . . Small diameter section

423. . . To the top

424. . . Slot

425. . . Inclined surface

51. . . plug

52. . . First elastic member

61. . . Second elastic member

7. . . Locking mechanism

71. . . Switching piece

711. . . Grooving

712. . . Positioning slot

713. . . Pole

72. . . Third elastic member

73. . . Positioning member

8. . . fastener

Figure 1 is a perspective view of the present invention.

Figure 2 is a perspective exploded view of the present invention.

Figure 3 is a cross-sectional view of the present invention.

FIG. 3A is a partial enlarged view of FIG. 3. FIG.

Figure 3B is a side view of the shaft of the present invention.

Figure 3C is a side view of the stop pin and the stud of the present invention.

Figure 4 is a schematic view of the operation of the present invention.

1. . . Handle

2. . . head

3. . . Activity颚

4. . . Adjustment mechanism

7. . . Locking mechanism

Claims (10)

A reciprocating adjustable wrench comprising: a handle having a connecting end and a tail end, the handle having a stud projecting from the connecting end; a head having a fixed jaw and a slip a slot, a receiving slot, a first jack, a second jack, and a positioning hole, the receiving slot is in communication with the slot, and the first jack and the second jack are respectively received The first insertion hole and the second insertion hole are respectively located at two sides of the accommodating groove, and the first insertion hole is coaxial with the second insertion hole, and the positioning hole is connected to the first insertion hole. The head is swingably disposed at the connecting end such that the head is swingable relative to the handle between a first position and a second position; and a movable jaw is slidably disposed in the sliding slot to The fixed jaw forms a jaw, the movable jaw has a row of teeth; an adjustment mechanism includes a volute and a shaft, the worm has an engaging portion and a shaft hole, and the volute is received in the receiving groove. Engaging the engaging portion with the tooth row, the shaft has a large diameter section, a small diameter section and an abutting top, and the abutting top is located in the large diameter section Between the small diameter segments, the large diameter section is inserted into the first insertion hole, and the small diameter section is inserted into the shaft hole and inserted into the second insertion hole, and the abutting top is abutted against the worm. One end of the second insertion hole defines a slot, and the slot is located at an end of the large diameter section away from the small diameter section, and the shaft defines an axis, and the shaft is opposite to the volute The head reciprocates along the axis, and the movable cymbal slides along the sliding slot when the volley slides along the axis; wherein the volute abuts against the apex when the volley slides away from the second insertion hole, Rotating the shaft with the ram, the ram abutting against the ram when sliding toward the second socket, causing the volute to slide with the shaft; wherein the worm can be wound around the shaft Rotating the axis of the rod to urge the engaging portion against the row of teeth to slide the movable jaw along the sliding slot; a head restoring mechanism abutting the handle and the head, the head resetting mechanism provides an elasticity a force that causes the head to have a tendency to reset to the first position; a shaft reset mechanism is received in the first socket and the slot, The shaft returning mechanism provides another elastic force, so that the shaft has a tendency to slide toward the second insertion hole; wherein when the head is in the first position, the protruding post is inserted into the first insertion hole through the positioning hole, The protruding post can block the sliding path of the shaft; wherein when the head is in the second position, the protruding post and the first insertion hole are separated from each other, and the shaft can slide away from the second insertion hole. The reciprocating adjustable wrench according to claim 1, wherein the connecting end has two arms, the head has a shoulder, the shoulder is swingably disposed between the two arms, so that the head can be opposite The handle swings, the two arm portions each form a through hole, the shoulder portion forms a notch, the missing slot is located at an edge of the shoulder, and the head reset mechanism comprises a latch and a first elastic member, the latch is worn Provided in the two through holes and the notch, the latch slides relative to the head along the notch when the handle is swung relative to the head, the first elastic member is received in the notch, and the first elastic member is abutted Topped to the latch and the shoulder. The reciprocating adjustable wrench according to claim 1, wherein the protruding post is inserted into the positioning hole and cannot be separated from the positioning hole when the head is swung between the first position and the second position. The reciprocating adjustable wrench according to claim 1, wherein the handle portion forms an end slot, the handle portion has a stopper pin, and the stopper pin has a top portion and a bottom portion, and the bottom portion is swingably disposed at the end groove, The bottom portion tapers to an end remote from the top portion, and the top portion protrudes from the end groove to form the stud. The reciprocating adjustable wrench according to claim 1, wherein the head has a stopper located at an end of the first insertion hole away from the second insertion hole, and the shaft reset mechanism abuts the stopper With the shaft. The reciprocating adjustable wrench according to claim 1, wherein the slot is cylindrical, the shaft return mechanism includes a second elastic member, and the second elastic member has a cylindrical shape. The reciprocating adjustable wrench of any one of claims 1 to 6, wherein the inner diameter of the second insertion hole is smaller than the inner diameter of the first insertion hole. The reciprocating adjustable wrench according to any one of claims 1 to 6, wherein an end of the shaft away from the second insertion hole forms an inclined surface, the convex column forms another inclined surface, and the two inclined surfaces and the The angle between the axes is between 45 and 87 degrees. When the studs and the shaft abut each other, the two inclined surfaces abut each other. The reciprocating adjustable wrench of claim 8, wherein the angle between the two inclined faces and the axis is between 65 and 75 degrees. The reciprocating adjustable wrench according to any one of claims 1 to 6, wherein the accommodating groove, the shaft and the worm have a size that satisfies the following relationship in a natural state that is not subjected to an external force: m>L _Max *15.5%; n>L _max *15.5%; the L _max is the width of the jaw when the worm rotates to slide the movable raft along the chute to the farthest away from the fixed raft, the m is The accommodating groove is different from the length of the volley along the axis, and the n is a length in which the small diameter segment is inserted in the second insertion hole.