CN111745580A - A kind of spanner - Google Patents

Abstract

The invention discloses a wrench, which comprises a handle part and a clamping part, wherein the handle part is integrally connected with a baffle which is clamped outside the clamping part, the clamping part is sequentially sleeved with a plurality of hollow clamping pieces from inside to outside, at least one side surface of each clamping piece is provided with a plurality of hook bodies, each hook body comprises an upper hook body and a lower hook body, at least one side surface of each clamping piece is provided with a plurality of groove bodies matched with the hook bodies, the hook bodies and the groove bodies are positioned on the same side surface or different side surfaces, the hook bodies positioned at different positions slide into or slide out of the groove bodies to realize the relative movement of adjacent clamping pieces, the clamping part is provided with a ratchet rotor around the outermost clamping piece, and one end of the handle part close to the clamping part is provided with a transmission piece. The wrench disclosed by the invention can realize the adjustment of the opening size, can be used for screwing or unscrewing parts to be screwed in different sizes, can also realize the continuous pulling of the parts to be screwed, does not need to leave the parts to be screwed in the process of pulling the parts to be screwed, and improves the working efficiency.

Description

A kind of spanner

Technical Field

The invention relates to a manual tool, in particular to a wrench.

Background

At present, the wrenches commonly used in production and life mainly comprise solid wrenches, adjustable wrenches, ratchet wrenches and the like. One end or two ends of the solid wrench are provided with openings with fixed sizes, one wrench cannot adapt to the working requirements of various specifications, and therefore the solid wrench can be manufactured into various specifications, and complex work needs to be carried with a plurality of handles. The opening width of the adjustable wrench can be adjusted within a certain size range, and bolts or nuts of different specifications can be screwed, but the handle of the existing adjustable wrench can only rotate by a small angle, so that a workpiece needs to be continuously rotated for multiple times to be screwed or unscrewed. In the process of two rotations, the wrench needs to be stopped to rotate in the opposite direction, the wrench is usually separated from the workpiece, and the wrench is sleeved again to rotate again after rotation, so that the operation method is very inconvenient and the rotation efficiency is low. The ratchet handle can simplify the operation, and the ratchet handle can rotate without separating the wrench from a workpiece by rotating, but the size of the opening of a common ratchet wrench is fixed, so that the ratchet handle cannot be adjusted, and is very inconvenient. The difficulty is large when the ratchet structure and the opening are combined together in an adjustable mode.

Disclosure of Invention

The invention aims to solve the problems that an existing adjustable wrench is adjustable in opening, can rotate only by being temporarily separated from a workpiece, is sleeved with the workpiece again for rotation, is troublesome to operate and low in efficiency.

In order to achieve the purpose, the invention adopts the following technical scheme: the utility model provides a wrench, includes handle portion and clamping part, handle portion body coupling has the baffle, the outside of clamping part is located to the baffle card, clamping part is equipped with a plurality of hollow fasteners from inside to outside cover in proper order, at least one side of fastener is provided with a plurality of coupler bodies, the coupler body includes coupler body and lower coupler body, at least one side of fastener is provided with a plurality of cell bodies with coupler body looks adaptation, the coupler body is in the same or different side with the cell body, and the coupler body that is in different positions slides in or the roll-off cell body, realizes the relative movement of adjacent fastener, clamping part encircles the outside fastener and is provided with ratchet rotor, the one end that handle portion is close to clamping part is provided with and uses the driving medium that is used for realizing ratchet rotor just, reversal with the ratchet rotor cooperation.

The transmission part comprises a cylinder body, a knob is arranged at the top end of the cylinder body, a first pawl and a second pawl are sleeved at the bottom end of the cylinder body in a crossed mode, a fixed rod is connected to one side of the cylinder body, a rotating rod is connected to the other side of the cylinder body, a fixed groove is formed in one side, close to the transmission part, of the handle portion, the fixed rod is located in the fixed groove and moves back and forth under the action of external force in the fixed groove, the rotating rod is located between the first pawl and the second pawl, and the ratchet rotor is.

The clamping part is circular in shape, and the cross section of the clamping piece is in a regular hexagon shape.

The connecting line of the upper hook body and the lower hook body is vertical to the horizontal plane, and the groove body corresponds to the upper hook body or the lower hook body.

Wherein, the hook body still includes the concave body, the concave body uses with the cell body adaptation.

The connecting line of the concave body, the upper hook body and the lower hook body is vertical to the horizontal plane, the concave body is positioned between the upper hook body and the lower hook body, and the groove body corresponds to the concave body.

The upper hook body and the lower hook body are respectively perpendicular to a connecting line of the concave body and a horizontal plane, the upper hook body and the lower hook body are located on different vertical lines, and the groove body corresponds to the concave body in position.

The clamping part is provided with a clamping part, a cavity is arranged on one side of the upper end of the clamping part, through holes communicated with all clamping parts are further formed in the clamping part, a plurality of fastening pieces are arranged in the cavity, each fastening piece comprises an extending end, one end of the extending end is connected with a second spring, a protrusion is arranged at the upper end of the extending end, and one end, far away from the extending end, of the second spring is fixed to the cavity.

Wherein, the fastener is 1, is located the left side or the right side of cavity.

The two fastening pieces are oppositely arranged left and right and are respectively a first fastening piece and a second fastening piece.

The clamping part is internally provided with a cavity penetrating through all the clamping parts, a screw rod is placed in the cavity, two ends of the screw rod are in threaded connection with nuts, and the nuts are located on the outer side of the largest clamping part of the clamping part.

The clamping part is internally provided with a slide and a slide rod, the slide passes through the clamping piece on one side of the clamping part, one end of the slide rod is connected with the slide in a sliding manner, and the other end of the slide rod is movably connected with the clamping part through a shaft body.

A slide rod is arranged in the clamping part, one end of the slide rod is positioned in the slide way, and the slide rod moves back and forth under the action of external force.

The clamping part is internally provided with a rod body which is positioned at the outer side of all the clamping parts, the upper end and the lower end of the rod body are respectively and movably connected with an upper sliding sheet and a lower sliding sheet, and the upper sliding sheet and the lower sliding sheet are clamped at the upper end and the lower end of the clamping part.

Compared with the prior art, the invention has the following beneficial effects: the wrench disclosed by the invention can realize the adjustment of the opening size, can be used for screwing or unscrewing parts to be screwed in different sizes, can also realize the continuous pulling of the parts to be screwed, does not need to leave the parts to be screwed in the process of pulling the parts to be screwed, and improves the working efficiency; the wrench provided by the invention can extend the clamping piece according to actual needs by matching the hook body of the adjacent clamping piece with the groove body, is suitable for both an outer hexagonal part and an inner hexagonal part, and is simple and convenient in control process.

Drawings

The invention is described in further detail below with reference to the following figures and detailed description:

FIG. 1 is a top view of a wrench disclosed in embodiment 1 of the present invention;

FIG. 2 is a connection diagram of adjacent sets of the wrench disclosed in embodiment 1 of the present invention;

FIG. 3 is a front view of the wrench disclosed in embodiment 1 of the present invention;

FIG. 4 is a cross-sectional view taken along the line b-b in FIG. 3;

FIG. 5 is a schematic view of a transmission member of the wrench disclosed in embodiment 1 of the present invention;

FIG. 6 is a view showing a state of use of the wrench disclosed in embodiment 1 of the present invention;

FIG. 7 is a top view of the disclosed wrench of example 2 of the present invention;

FIG. 8 is a partial enlarged view of FIG. 7A;

FIG. 9 is a cross-sectional view taken along the line c-c in FIG. 8;

FIG. 10 is a schematic view of a wrench according to embodiment 2 of the present invention in a first use state;

FIG. 11 is a schematic view of a second state of use of the wrench disclosed in embodiment 2 of the present invention;

FIG. 12 is a front view of the disclosed wrench of embodiment 3 of the present invention;

FIG. 13 is a top plan view of the disclosed wrench of example 3 of the present invention;

FIG. 14 is a cross-sectional view taken along the direction of d-d in FIG. 13

FIG. 15 is a schematic view of a wrench according to embodiment 3 of the present invention in a first use state;

FIG. 16 is a schematic view of a second state of use of the wrench disclosed in embodiment 3 of the present invention;

FIG. 17 is a top plan view of the disclosed wrench of example 4 of the present invention;

FIG. 18 is a cross-sectional view taken along the line e-e in FIG. 17;

FIG. 19 is a front view of the disclosed wrench of embodiment 5 of the present invention;

FIG. 20 is a top view of the disclosed wrench of example 5 of the present invention.

Wherein: the clamping part 1, the clamping piece 2, the hook body 3, the ratchet rotor 5, the handle part 6, the transmission piece 7, the column 8, the knob 9, the first pawl 10, the second pawl 11, the fixed rod 12, the rotating rod 13, the fixed groove 14, the cavity 17, the through hole 18, the fastening piece 19, the extending end 20, the second spring 21, the bulge 22, the first fastening piece 23, the second fastening piece 24, the cavity 25, the screw rod 26, the slide way 28, the slide rod 29, the upper sliding piece 31, the lower sliding piece 32, the upper hook body 33, the lower hook body 33-1, the concave body 34, the groove body 36 and the first spring 37.

Detailed Description

The following description of the embodiments of the present invention is provided for illustrative purposes, and other advantages and effects of the present invention will become apparent to those skilled in the art from the present disclosure.

Please refer to fig. 1 to 20. It should be understood that the structures, ratios, sizes, and the like shown in the drawings and described in the specification are only used for matching with the disclosure of the specification, so as to be understood and read by those skilled in the art, and are not used to limit the conditions under which the present invention can be implemented, so that the present invention has no technical significance, and any structural modification, ratio relationship change, or size adjustment should still fall within the scope of the present invention without affecting the efficacy and the achievable purpose of the present invention. In addition, the terms "upper", "lower", "left", "right", "middle" and "one" used in the present specification are for clarity of description, and are not intended to limit the scope of the present invention, and the relative relationship between the terms and the terms is not to be construed as a scope of the present invention.

Example 1

As shown in fig. 1 and 2, the wrench comprises a handle part 6 and a clamping part 1, wherein the clamping part 1 is circular in shape, the handle part 6 is integrally connected with a baffle, the baffle is clamped on the outer side of the clamping part 1, the clamping part 1 is sequentially sleeved with a plurality of hollow clamping pieces 2 from inside to outside, and the cross section of each clamping piece 2 is in a regular hexagon shape. The two non-adjacent side surfaces of the clamping piece 2 are respectively provided with a hook body, the hook body comprises an upper hook body 33, a lower hook body 33-1 and 2 concave bodies 34, the upper hook body 33 at the position extends inwards and downwards from the side surface of the clamping piece 2, the lower hook body 33-1 extends inwards and upwards from the side surface of the clamping piece 2, and the concave bodies 34 extend inwards from the side surface of the clamping piece 2 to form a groove. The upper hook body 33 and a concave body 34 are positioned on the same side, the connecting line of the upper hook body 33 and the concave body 34 is vertical to the horizontal plane, the lower hook body 33-1 and the other concave body 34 are positioned on the other side, the connecting line of the lower hook body 33-1 and the concave body 34 is vertical to the horizontal plane, the other two non-adjacent sides of the clamping piece 2 are respectively provided with a groove body 36, and the groove bodies 36 and the corresponding concave bodies 34 are positioned at the same height.

Before using, each fastener 2 tightly overlaps each other and is in same plane in clamping part 1, concave part 34 is located the cell body 36 respectively this moment, when the part is revolved in waiting of needs screw up or unscrewing hexagon socket head, like the nut, the bolt, the screw, during the nut, according to waiting to revolve the fastener 2 of part hexagon socket size selection suitable position, like fastener B, will be adjacent with fastener B fastener 2 denominate fastener A respectively, fastener C, fastener A is located the inboard of fastener B, fastener C is located the outside of fastener B, press downwards by B all inwards fastener (including fastener B), block concave part 34 in fastener B in the cell body 36 in fastener A, go up hook body 33 in fastener C and block in the cell body 36 in fastener B, fastener B stretches out clamping part 1, will wait to revolve the part and overlap in fastener B, it screws up or unscrews the operation to wait to revolve the part.

In actual operation, the clamping piece B can extend out of the clamping part 1 alone, or the clamping piece B and all the clamping pieces 2 on the inner side of the clamping piece B can extend out of the clamping part 1 together. The two modes have equivalent functions, and the screwing or unscrewing operation process of the inner hexagonal part to be screwed cannot be influenced. However, when the external hexagonal member to be screwed down needs to be screwed down or unscrewed, taking the clip B as an example, the inner diameter of the clip B is equal to the outer diameter of the member to be screwed down, and at this time, all the clips 2 on the inner side of the clip B need to be extended out of the clamping portion 1 in the opposite direction together. At the moment, an inner hexagonal concave pit is formed on one side of the clamping part 1, which is opposite to the outer hexagonal part to be screwed, so that the outer hexagonal part to be screwed can be just sleeved, and the part to be screwed is screwed or unscrewed.

The upper hook body 33, the lower hook body 33-1 and the concave body 34 can be arranged on different side surfaces or on the same side surface, when the upper hook body 33, the lower hook body 33-1 and the concave body 34 are arranged on the same vertical line, the concave body 34 is arranged between the upper hook body 33 and the lower hook body 33-1, and the arrangement position of the groove body 36 still corresponds to the concave body 34.

The upper hook 33, the lower hook 33-1 and the concave 34 may extend inward or outward from the side of the clip member 2.

In addition, the hook body may only have the upper hook body 33, the lower hook body 33-1, and no concave body 34, in which case the upper hook body 33 and the lower hook body 33-1 are on the same vertical line, and the groove 36 corresponds to the position of the upper hook body 33 or the lower hook body.

In addition, the slot 36 may be on the same side as the hook or on a different side from the hook.

As shown in fig. 3, 4, and 5, the clamping part 1 is provided with a ratchet rotor 5 around the clamping part 2, one end of the handle part 6 close to the clamping part 1 is provided with a transmission member 7, the transmission member 7 includes a cylinder 8, a knob 9 is provided on the top end of the cylinder 8, a first pawl 10 and a second pawl 11 are crossly sleeved on the bottom end of the cylinder 8, one side of the cylinder 8 is connected with a fixing rod 12, the other side of the cylinder 8 is connected with a rotating rod 13, one side of the handle part 6 close to the transmission member 7 is provided with a fixing groove 14, the fixing rod 12 is located in the fixing groove 14 and moves back and forth under the action of an external force in the fixing groove 14, the rotating rod 13 is located between the first pawl 10 and the second pawl 11, the first pawl 10 and the second pawl 11 are connected with the.

When the handle part 6 needs to be rotated anticlockwise, the knob 9 is rotated anticlockwise, the fixing rod 12 and the rotating rod 13 rotate along with the fixing rod 12, the fixing groove 14 is a splayed groove, the two ends of the fixing groove are wide, the middle of the fixing groove is narrow, the contact end of the fixing rod 12 and the fixing groove 14 has certain elasticity, the fixing rod 12 is fixed at one end of the fixing groove 14 under the action of external force, meanwhile, the rotating rod 13 abuts against the first pawl 10 (the second pawl 11), so that the first pawl 10 (the second pawl 11) cannot be contacted with the ratchet rotor 5, the second pawl 11 (the first pawl 10) is contacted with the ratchet rotor 5, the handle part 6 is pulled anticlockwise, the second pawl 11 (the first pawl 10) is meshed with the ratchet rotor 5, the part to be rotated is screwed or unscrewed continuously by pulling the handle part 6, the part to be rotated does not need to leave in the pulling process; on the contrary, when the handle portion 6 needs to be pulled clockwise, the knob 9 is rotated clockwise, the fixing rod 12 and the rotating rod 13 rotate along with the knob, the fixing rod 12 is fixed at the other end of the fixing groove 14, the rotating rod 13 abuts against the second pawl 11 (the first pawl 10), the second pawl 11 (the first pawl 10) cannot be in contact with the ratchet rotor 5, the first pawl 10 (the second pawl 11) is in contact with the ratchet rotor 5, the handle portion 6 is pulled clockwise, the first pawl 10 (the second pawl 11) is meshed with the ratchet rotor 5, and the handle portion 6 can be pulled continuously to be loosened or tightened.

As shown in fig. 6, a state diagram of screwing or unscrewing the hexagon socket to-be-screwed member, according to the size of the inner diameter of the to-be-screwed member, the clamping piece 2 at a proper position is selected, and the clamping piece 2 or all clamping pieces 2 located in the clamping piece 2 are pressed downwards, so that after the relative positions of the clamping piece 2 and the adjacent clamping pieces 2 are stabilized, at this time, the handle portion 6 is pulled to screw or unscrew the to-be-screwed member.

The spanner realizes the extending of part of the clamping pieces 2 and the fixing process of the adjacent clamping pieces 2 by arranging the upper hook body 33, the lower hook body 33-1, the concave body 34 and the groove body 36 of the adjacent clamping pieces 2, is simple and convenient to operate, and can realize the screwing or unscrewing operation of parts to be screwed in different sizes and different types (inner hexagonal or outer hexagonal); in the screwing or unscrewing operation, the component to be screwed does not need to be separated, the operation is continuous, and the working efficiency is improved.

Example 2

Referring to fig. 7, 8 and 9, the difference from embodiment 1 is that a cavity 17 is provided on one side of the upper end of the clamping portion 1, a through hole 18 communicating with all the clamping members 2 is provided in the clamping portion 1, two fastening members 19 are provided in the cavity 17, the two fastening members 19 are oppositely provided left and right and are respectively a first fastening member 23 and a second fastening member 24, the fastening member 19 includes an extending end 20, one end of the extending end 20 is connected with a second spring 21, a protrusion 22 is provided on the upper end of the extending end 20, and one end of the second spring 21 far from the extending end 20 is disposed in the cavity 17.

The upper end of the bulge 22 can be provided with external threads which are connected with a nut in a threaded manner, and the outer end of the nut is clamped on the adjacent clamping piece 2. As the protruding ends 20 of the first fastener 23 and the second fastener 24 are in snap connection, the nut at the upper end of the first fastener is fixed on the clamping piece 2, the nut at the upper end of the second fastener 24 is loosened, and the second fastener 24 is pushed downwards, so that the clamping piece 2 below the second fastener 24 protrudes downwards for screwing or unscrewing the hexagon socket to-be-screwed component; when the outer hexagonal part to be screwed needs to be screwed down or unscrewed, the nut above the second fastening piece 24 is screwed down, the nut above the first fastening piece 23 is unscrewed, and the clamping piece 2 below the first fastening piece 23 is pushed upwards.

As shown in fig. 10, in a state of screwing or unscrewing the hexagon socket to-be-screwed member, firstly, according to the size of the hexagon socket of the to-be-screwed member, the nuts on the first fastening member 23 and the second fastening member 24 are unscrewed, the first fastening member 23 and the second fastening member 24 are slid, so that the second fastening member 24 is located above the card member 2 corresponding to the inner diameter of the to-be-screwed member, and at the same time, the second fastening member 24 is pressed downward, the plurality of card members 2 located below the second fastening member 24 move downward, when the protruding end 20 of the second fastening member 24 is located at the left end position of the through hole 18, the second fastening member 24 is loosened, and the second fastening member 24 enters the through hole 18 under the elastic force of the second spring 21, so that the plurality of card members 2 below the second fastening member 24 are located.

As shown in fig. 11, in a state diagram of screwing or unscrewing the hexagon socket to-be-screwed member, first, according to the size of the hexagon socket of the to-be-screwed member, the second fastening member 24 is pressed, so that the second fastening member 24 is located above the card 2 corresponding to the outer diameter of the to-be-screwed member, and at the same time, the card 2 is pushed upwards to drive the second fastening member 24 and all the cards 2 located inside the card 2 to move upwards, until the extending end 20 of the first fastening member 23 is located at the right end position of the through hole 18, the card 2 and the second fastening member 24 stop moving upwards, so that the plurality of cards 2 below the second fastening member 24 and the adjacent cards 2 are located at fixed positions.

The adjacent fastener 2 of clamping part 1 passes through the cell body 36 and uses with last coupler 33, lower coupler 33-1, concave 34 cooperation, on realizing adjacent fastener 2 fixed action's basis, end 20 inserts through-hole 18 through stretching out of first fastener 23 or second fastener 24, realizes the secondary fixed action of adjacent fastener 2, dual fixed action for clamping part 1 with treat that the part is connected more firmly soon, in avoiding the use, the problem of droing appears in clamping part 1 part fastener 2.

Example 3

Referring to fig. 12, 13 and 14, different from embodiment 1, a cavity 25 penetrating through all the clamping pieces 2 is arranged in the clamping portion 1, the cavity 25 has a certain height, the outermost sides of the left side and the right side of the cavity 25 are fixed on the clamping portion 1, a screw rod 26 is placed through the cavity 25, two ends of the screw rod 26 are in threaded connection with nuts, and the nuts are located on the outer side of the largest clamping piece 2 of the clamping portion 1 and used for fixing the clamping pieces 2.

As shown in fig. 15, the state diagram of the part to be screwed up or unscrewed is that according to the size of the outer hexagon of the part to be screwed, the clamping piece 2 adapted to the inner diameter of the part to be screwed and all the clamping pieces 2 on the inner side of the clamping piece 2 are pressed to move upwards, when the nut is screwed up to a certain position, all the clamping pieces 2 in the clamping part 1 are fixed, and at the moment, the part to be screwed up can be sleeved, so that the part to be screwed up or unscrewed is operated.

As shown in fig. 16, which is a state diagram of screwing or unscrewing the hexagon socket to-be-screwed member, the clamping piece 2 corresponding to the outer diameter of the to-be-screwed member and all clamping pieces 2 on the inner side of the clamping piece 2 are pushed to move downwards according to the size of the hexagon socket of the to-be-screwed member, and when the nut is screwed to a certain position. The part to be screwed can be inserted at this time, and the screwing or unscrewing operation can be carried out.

Example 4

As shown in fig. 17 and 18, unlike embodiment 1, a slide rail 28 and a slide rod 29 are provided in a clamp part 1, the slide rail 28 penetrates through a hook 2 on one side of the clamp part 1, one end of the slide rod 29 is fixed in the slide rail 28 and swings back and forth in the slide rail 28 by an external force, and the other end of the slide rod 29 is movably connected to the clamp part 1 through a shaft body.

When the clamping piece 2 at a proper position in the clamping part 1 needs to be slid in use, one end of the sliding rod 29 is rotated until the sliding rod 29 is clamped above the clamping piece 2 at the proper position, the clamping piece 2 at the proper position and the clamping piece at the outer side of the clamping piece 2 are fixed, and all the clamping pieces 2 in the clamping piece 2 at the proper position can be extended upwards or downwards according to the first embodiment.

Example 5

Referring to fig. 19 and 20, the difference from embodiment 1 is that a rod is disposed in the clamping portion 1, an upper slide piece 31 and a lower slide piece 32 are respectively connected to the upper and lower ends of the rod, and the upper slide piece 31 and the lower slide piece 32 are clamped on the upper and lower sides of the clamping portion 1.

The foregoing embodiments are merely illustrative of the principles and utilities of the present invention and are not intended to limit the invention. Any person skilled in the art can modify or change the above-mentioned embodiments without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which can be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.

Claims (10)

1. The wrench comprises a handle part (6) and a clamping part (1), and is characterized in that the handle part (6) is integrally connected with a baffle, the baffle is clamped on the outer side of the clamping part (1), the clamping part (1) is sequentially sleeved with a plurality of hollow clamping pieces (2) from inside to outside, at least one side face of each clamping piece (2) is provided with a plurality of hook bodies, each hook body comprises an upper hook body (33) and a lower hook body (33-1), at least one side face of each clamping piece (2) is provided with a plurality of groove bodies (36) matched with the hook bodies, the hook bodies and the groove bodies (36) are located on the same or different sides, the hook bodies at different positions slide into or slide out of the groove bodies to realize relative movement of adjacent clamping pieces (2), the clamping part (1) is provided with a ratchet rotor (5) around the outermost clamping part (2), and one end, close to the clamping part (1), of the handle part (6) is provided with the ratchet rotor (5) A transmission member (7) for positive and negative rotation of the rotor (5).

2. The wrench as claimed in claim 1, wherein the transmission member (7) comprises a cylinder (8), a knob (9) is disposed at the top end of the cylinder (8), a first pawl (10) and a second pawl (11) are disposed at the bottom end of the cylinder (8) in a crossed manner, a fixing rod (12) is connected to one side of the cylinder (8), a rotating rod (13) is connected to the other side of the cylinder (8), a fixing groove (14) is disposed at one side of the handle portion (6) close to the transmission member (7), the fixing rod (12) is disposed in the fixing groove (14) and moves back and forth in the fixing groove (14) under the action of an external force, the rotating rod (13) is disposed between the first pawl (10) and the second pawl (11), and the ratchet rotor (5) is engaged with the first pawl (10) or the second pawl (.

3. A wrench as claimed in claim 1, wherein the clamping portion (1) is circular in shape and the jaw member (2) is regular hexagonal in cross-section.

4. The wrench as claimed in claim 1, wherein the line connecting the upper hook (33) and the lower hook (33-1) is perpendicular to the horizontal plane, and the groove (36) corresponds to the position of the upper hook (33) or the lower hook (33-1).

5. The wrench as claimed in claim 1, wherein the hook further comprises a recess (34), the recess (34) being adapted to fit into the slot (36).

6. The wrench as claimed in claim 5, wherein the line connecting the concave body (34) with the upper hook body (33) and the lower hook body (33-1) is perpendicular to the horizontal plane, the concave body (34) is located between the upper hook body (33) and the lower hook body (33-1), and the groove body (36) corresponds to the concave body (34).

7. The wrench according to any one of claims 1-6, wherein a cavity (17) is formed in one side of the upper end of the clamping portion (1), through holes (18) communicating with all the clamping members (2) are horizontally formed in the clamping portion (1), a plurality of fasteners (19) are arranged in the cavity (17), each fastener (19) comprises an extending end (20), one end of each extending end (20) is connected with a second spring (21), a protrusion (22) is formed in the upper end of each extending end (20), each protrusion (22) is matched with the corresponding through hole (18) for use, and one end, far away from each extending end (20), of each second spring (21) is fixed in the cavity (17).

8. A wrench as claimed in any one of claims 1-6, wherein a cavity (25) is provided in the clamping portion (1) through all the jaws (2), a threaded rod (26) is disposed through the cavity (25), and nuts are threadedly connected to both ends of the threaded rod (26), the nuts being located outside the largest jaw (2) of the clamping portion (1).

9. A wrench as claimed in any one of claims 1-6, wherein a slide way (28) and a slide rod (29) are provided in the clamping portion (1), the slide way (28) passes through the fastener (2) on one side of the clamping portion (1), one end of the slide rod (29) is slidably connected with the slide way (28), and the other end of the slide rod (29) is movably connected with the clamping portion (1) through a shaft body.

10. The wrench according to any one of claims 1-6, wherein a rod is disposed in the clamping portion (1) and located outside all the clamping members (2), an upper sliding piece (31) and a lower sliding piece (32) are movably connected to the upper and lower ends of the rod, respectively, and the upper sliding piece (31) and the lower sliding piece (32) are clamped to the upper and lower ends of the clamping portion (1).

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