CN111745580A - a wrench - Google Patents

Abstract

The invention discloses a wrench, which comprises a handle part and a clamping part. The handle part is integrally connected with a baffle plate, the baffle plate is clamped on the outer side of the clamping part, and the clamping part is sequentially sleeved with a plurality of hollow clamps from the inside to the outside. At least one side of the clip is provided with a plurality of hook bodies, the hook body includes an upper hook body and a lower hook body, and at least one side of the clip is provided with a plurality of groove bodies that are adapted to the hook bodies, and the hook bodies and the groove body are in the same position. Or on different sides, the hooks at different positions slide into or out of the groove to realize the relative movement of the adjacent clips. The clamping part is provided with a ratchet rotor around the outermost clip, and the end of the handle part close to the clamping part is provided with a ratchet rotor. It is used in conjunction with the ratchet rotor to realize the forward and reverse rotation of the ratchet rotor. The wrench of the present invention can realize adjustable opening size, tighten or loosen the parts to be rotated with different sizes, and can continuously pull the parts to be rotated without leaving the parts to be rotated in the process of pulling the parts to be rotated ,Improve work efficiency.

Description

a wrench

technical field

The present invention relates to hand tools, in particular to a wrench.

Background technique

At present, there are several types of wrenches commonly used in production and life, such as fixed wrenches, adjustable wrenches, and ratchet wrenches. One or both ends of the wrench have a fixed size opening. One wrench cannot meet the needs of various specifications of work, so it will be made into various specifications, and complex work needs to carry more than one. The opening width of the adjustable wrench can be adjusted within a certain size range, and it can rotate bolts or nuts of different specifications, but the handle of the existing adjustable wrench can only be rotated by a small angle, so the workpiece needs to be rotated continuously for many times. , can be tightened or loosened. Between two rotations, it is necessary to stop and rotate the wrench in the opposite direction. The usual method is to separate the wrench from the workpiece, and then put it on again and rotate it again. This operation method is very inconvenient and the rotation efficiency is low. The ratchet handle can simplify this operation. During rotation, the wrench can be rotated without disengaging the wrench from the workpiece. However, the opening size of the common ratchet wrench is fixed and cannot be adjusted, which is very inconvenient. It is more difficult to combine the ratchet structure with the adjustable opening.

SUMMARY OF THE INVENTION

In order to solve the problem that the opening of the existing adjustable wrench is adjustable, but it needs to be temporarily detached from the workpiece before it can be rotated and then re-sleeved to rotate, which is troublesome to operate and has low efficiency, the purpose of the present invention is to provide a wrench whose opening size can be adjusted It can be adjusted continuously and quickly without leaving the workpiece. It is not only suitable for outer hexagonal parts, but also for inner hexagonal parts. The operation is simple and the work efficiency is improved.

In order to achieve the above purpose, the present invention adopts the following technical solutions: a wrench includes a handle part and a clamping part, the handle part is integrally connected with a baffle plate, the baffle plate is clamped on the outer side of the clamping part, and the clip The tightening part is sequentially sleeved with a plurality of hollow clips from the inside to the outside, at least one side of the clip is provided with a plurality of hooks, the hook includes an upper hook and a lower hook, and at least one side of the clip is provided with There are a plurality of groove bodies matched with the hook body, the hook body and the groove body are on the same or different sides, and the hook bodies at different positions slide into or out of the groove body to realize the relative movement of the adjacent clips, so The clamping part is provided with a ratchet rotor around the outermost clamping part, and one end of the handle part close to the clamping part is provided with a transmission part used in cooperation with the ratchet rotor to realize the forward and reverse rotation of the ratchet rotor.

Wherein, the transmission member includes a cylinder, a knob is arranged at the top of the cylinder, a first pawl and a second pawl are cross-sleeved at the bottom of the cylinder, a fixing rod is connected on one side of the cylinder, and the other side of the cylinder is A rotating rod is connected, a fixed groove is set on the side of the handle part close to the transmission part, the fixed rod is located in the fixed groove, and is moved back and forth in the fixed groove by external force, and the rotating rod is located between the first pawl and the second pawl , the ratchet rotor is engaged with the first pawl or the second pawl.

Wherein, the outer shape of the clamping part is circular, and the cross section of the clamping part is a regular hexagon.

Wherein, the connecting line of the upper hook body and the lower hook body is perpendicular to the horizontal plane, and the groove body corresponds to the position of the upper hook body or the lower hook body.

Wherein, the hook body further includes a concave body, and the concave body is adapted to be used with the groove body.

Wherein, the connecting line between the concave body, the upper hook body and the lower hook body is perpendicular to the horizontal plane, the concave body is located between the upper hook body and the lower hook body, and the groove body corresponds to the position of the concave body.

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

Wherein, a cavity is provided on the upper end side of the clamping part, a through hole connecting all the clamping parts is also arranged in the clamping part, and a plurality of fasteners are arranged in the cavity, and the fasteners include The protruding end, one end of the protruding end is connected to the second spring, the upper end of the protruding end is provided with a protrusion, and the end of the second spring away from the protruding end is fixed to the cavity.

Wherein, there is one fastener, which is located on the left or right side of the cavity.

Wherein, there are two fasteners, which are arranged opposite to left and right, and are respectively a first fastener and a second fastener.

Wherein, the clamping part is provided with a cavity penetrating all the clamping parts, a screw rod is placed through the cavity, and both ends of the screw rod are threadedly connected with a nut, and the nut is located outside the largest clamping part of the clamping part.

Wherein, the clamping part is provided with a slideway and a slide rod, the slideway runs through the clamping part on one side of the clamping part, one end of the slide rod is slidably connected with the slideway, and the other end of the slide rod is connected to the clamp through the shaft body Tightly active connection.

A sliding rod is also arranged in the clamping part, and one end of the sliding rod is located in the slideway and moves back and forth in the slideway under the action of external force.

Wherein, the clamping part is provided with a rod body, the rod body is located on the outer side of all the clamping parts, the upper and lower ends of the rod body are respectively movably connected with an upper sliding piece and a sliding piece, and the upper sliding piece and the lower piece are clamped on the upper and lower sides of the clamping part. end.

Compared with the prior art, the present invention has the beneficial effects: the wrench of the present invention can realize adjustable opening size, tighten or loosen the parts to be rotated with different sizes, and can continuously pull the parts to be rotated, There is no need to leave the to-be-rotated part in the process of pulling the to-be-rotated part, which improves work efficiency; the wrench of the present invention can be used in conjunction with the hook body of the adjacent clip and the groove body, and the clip can be extended according to actual needs, which is not only suitable for external Hexagonal parts are also suitable for inner hexagonal parts, and the control process is simple and convenient.

Description of drawings

The present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments:

1 is a top view of the wrench disclosed in Embodiment 1 of the present invention;

Fig. 2 is the connection relationship diagram of adjacent sets in the wrench disclosed in Embodiment 1 of the present invention;

3 is a front view of the wrench disclosed in Embodiment 1 of the present invention;

Fig. 4 is the sectional view of b-b direction in Fig. 3;

5 is a schematic structural diagram of a transmission member in the wrench disclosed in Embodiment 1 of the present invention;

Fig. 6 is the use state diagram of the wrench disclosed in Embodiment 1 of the present invention;

7 is a top view of the wrench disclosed in Embodiment 2 of the present invention;

Fig. 8 is a partial enlarged view at Fig. 7A;

Fig. 9 is a sectional view in the direction of Fig. 8 c-c;

10 is a schematic diagram of the first use state of the wrench disclosed in Embodiment 2 of the present invention;

11 is a schematic diagram of the second use state of the wrench disclosed in Embodiment 2 of the present invention;

Figure 12 is a front view of the wrench disclosed in Embodiment 3 of the present invention;

Figure 13 is a top view of the wrench disclosed in Embodiment 3 of the present invention;

Fig. 14 is a sectional view in the direction of Fig. 13d-d

15 is a schematic diagram of the first use state of the wrench disclosed in Embodiment 3 of the present invention;

16 is a schematic diagram of the second use state of the wrench disclosed in Embodiment 3 of the present invention;

Figure 17 is a top view of the wrench disclosed in Embodiment 4 of the present invention;

Figure 18 is a sectional view in the direction of Figure 17e-e;

Figure 19 is a front view of the wrench disclosed in Embodiment 5 of the present invention;

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

Among them: clamping part 1, clamping part 2, hook body 3, ratchet rotor 5, handle part 6, transmission part 7, cylinder 8, knob 9, first pawl 10, second pawl 11, fixed rod 12, Rotating rod 13, fixing groove 14, cavity 17, through hole 18, fastener 19, projecting end 20, second spring 21, protrusion 22, first fastener 23, second fastener 24, empty Cavity 25 , screw 26 , slideway 28 , slide rod 29 , upper slide piece 31 , lower slide piece 32 , upper hook body 33 , lower hook body 33 - 1 , concave body 34 , groove body 36 , and first spring 37 .

Detailed ways

The embodiments of the present invention are described below by specific embodiments, and those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification.

See Figures 1 through 20. It should be noted that the structures, proportions, sizes, etc. shown in the drawings in this specification are only used to cooperate with the contents disclosed in the specification, so as to be understood and read by those who are familiar with the technology, and are not used to limit the implementation of the present invention. Restricted conditions, it does not have technical substantive significance, any structural modification, proportional relationship change or size adjustment, without affecting the effect that the present invention can produce and the purpose that can be achieved, should still fall within the present invention. The disclosed technical content must be within the scope of coverage. At the same time, the terms such as "up", "down", "left", "right", "middle" and "one" quoted in this specification are only for the convenience of description and clarity, and are not used to limit this specification. The implementable scope of the invention, and the change or adjustment of the relative relationship thereof, shall also be regarded as the implementable scope of the present invention without substantially changing the technical content.

Example 1

As shown in Figures 1 and 2, a wrench includes a handle portion 6 and a clamping portion 1. The outer shape of the clamping portion 1 is circular. , the clamping part 1 is sequentially sleeved with a plurality of hollow clips 2 from the inside to the outside, and the cross-section of the clips 2 is a regular hexagon. The two non-adjacent sides of the clip 2 are respectively provided with hook bodies, the hook bodies include an upper hook body 33, a lower hook body 33-1 and two concave bodies 34, where the upper hook body 33 is from the side of the clip 2 inwards , extending downward, the lower hook body 33-1 extends inward and upward from the side of the clip 2, and the concave body 34 extends inward from the side of the clip 2 to form a groove. The upper hook body 33 and a concave body 34 are on the same side, and the connecting line between the upper hook body 33 and the concave body 34 is perpendicular to the horizontal plane, the lower hook body 33-1 and another concave body 34 are on the other side, and the lower hook body 33- The connecting line between 1 and the concave body 34 is perpendicular to the horizontal plane. The other two non-adjacent sides of the clip 2 are respectively provided with groove bodies 36 , and the groove bodies 36 and the corresponding concave bodies 34 are at the same height.

Before use, the clamping parts 2 in the clamping part 1 are tightly fitted with each other and are on the same plane, and the concave bodies 34 are located in the groove bodies 36 respectively. , bolts, screws, nuts, according to the size of the hexagon of the component to be rotated, select the appropriate position of the clip 2, such as clip B, the clip 2 adjacent to the clip B is named clip A, clip C respectively , the card A is located on the inner side of the card B, the card C is located on the outside of the card B, press down all the cards (including the card B) from B inwards, and the concave body 34 in the card B is locked in the The groove body 36 in the clamping part A, the upper hook body 33 in the clamping part C are clamped in the groove body 36 in the clamping part B, the clamping part B extends out of the clamping part 1, the part to be rotated is put on the clamping part B, and the part to be rotated is Tighten or loosen.

In actual operation, the clip B can extend out of the clamping part 1 alone, or the clip B and all the clips 2 inside the clip B can be extended out of the clamping part 1 together. The two methods have the same effect, and will not affect the tightening or loosening process of the hexagon socket to be screwed. However, when it is necessary to tighten or loosen the part to be rotated with the outer hexagon, take clamp B as an example, the inner diameter of clamp B is equal to the outer diameter of the part to be rotated, at this time, all clamps 2 inside clamp B need to be Together, the clamping parts 1 protrude in opposite directions. At this time, the side of the clamping part 1 opposite to the outer hexagonal part to be rotated forms an inner hexagonal recess, which can just cover the outer hexagonal part to be rotated, and the to-be-rotated part can be tightened or loosened.

The upper hook body 33, the lower hook body 33-1 and the concave body 34 can be on different sides or on the same side. When they are on the same side, the upper hook body 33, the lower hook body 33-1 and the concave body 34 are on the same vertical line. and the concave body 34 is located between the upper hook body 33 and the lower hook body 33 - 1 . At this time, the setting position of the groove body 36 still corresponds to the concave body 34 .

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

In addition, the hook body may only have the upper hook body 33 and the lower hook body 33-1 without the concave body 34. At this time, the upper hook body 33 and the lower hook body 33-1 are on the same vertical line, and the groove body 36 and the upper hook body 33 or 33-1 are on the same vertical line. The position of the lower hook body corresponds.

In addition, the groove body 36 may be on the same side as the hook body, or may be on a different side with the hook body.

3, 4 and 5, the clamping part 1 is provided with a ratchet rotor 5 around the clamping part 2, and a transmission part 7 is provided at one end of the handle part 6 close to the clamping part 1. A knob 9 is provided at the top, a first pawl 10 and a second pawl 11 are cross-sleeved at the bottom end of the cylinder 8, a fixed rod 12 is connected on one side of the cylinder 8, and a rotating rod 13 is connected on the other side of the cylinder 8, A fixing groove 14 is provided on the side of the handle portion 6 close to the transmission member 7, the fixing rod 12 is located in the fixing groove 14, and is moved back and forth in the fixing groove 14 by external force, and the rotating rod 13 is located in the first pawl 10 and the second ratchet. Between the pawls 11 , the first pawl 10 and the second pawl 11 are connected to the handle portion 6 by the first spring 37 , and the ratchet rotor 5 is engaged with the first pawl 10 or the second pawl 11 .

When the handle part 6 needs to be rotated counterclockwise, the knob 9 is rotated counterclockwise, and the fixing rod 12 and the rotating rod 13 are rotated accordingly. The contact end has a certain elasticity, and the fixing rod 12 is fixed to one end of the fixing groove 14 under the action of an external force. (The second pawl 11 ) cannot contact the ratchet rotor 5 , the second pawl 11 (the first pawl 10 ) contacts the ratchet rotor 5 , and the handle portion 6 is turned counterclockwise, the second pawl 11 (the first pawl 10 ) is in contact with the ratchet rotor 5 . 10) Engage with the ratchet rotor 5, and continuously pull the handle part 6 to tighten or loosen the part to be rotated, without leaving the part to be rotated during the pulling process, the operation efficiency is higher; on the contrary, when the handle part needs to be pulled clockwise At 6:00, turn the knob 9 clockwise, and the fixed rod 12 and the rotating rod 13 rotate accordingly, so that the fixed rod 12 is fixed on the other end of the fixed groove 14, and the rotating rod 13 bears the second pawl 11 (the first pawl 10). ), so that the second pawl 11 (the first pawl 10 ) cannot contact the ratchet rotor 5 , the first pawl 10 (the second pawl 11 ) is in contact with the ratchet rotor 5 , and the handle part 6 is pulled clockwise, the first The pawl 10 (the second pawl 11 ) is engaged with the ratchet rotor 5 , and the handle part 6 can be continuously pulled to perform a loosening or tightening operation.

Figure 6 is the state diagram of tightening or loosening the hexagon socket to be rotated. According to the size of the inner diameter of the to-be-rotated part, select the clip 2 in the appropriate position, and press down the clip 2 or all the clips located in the clip 2. After the clip 2 is placed so that the relative position of the clip 2 and the adjacent clip 2 is stable, at this time, the handle portion 6 is pulled to tighten or loosen the to-be-rotated component.

The wrench of the present invention realizes the extension of part of the clips 2 and the fixing process of the adjacent clips 2 through the arrangement of the upper hook body 33, the lower hook body 33-1, the concave body 34 and the groove body 36 of the adjacent clips 2. Operation It is simple and convenient, and at the same time, it can realize the tightening or loosening operation of the parts to be spun of different sizes and types (inner hexagon or outer hexagon); and during the tightening or loosening operation, there is no need to leave the parts to be spun, continuous operation, which improves the work. efficiency.

Example 2

As shown in Figures 7, 8, and 9, the difference from Embodiment 1 is that a cavity 17 is provided on the upper end side of the clamping portion 1, and a through hole 18 is provided in the clamping portion 1 to communicate with all the clips 2. The cavity 17 The fasteners 19 are arranged inside, and there are two fasteners 19, which are arranged opposite to the left and right, respectively a first fastener 23 and a second fastener 24. The fastener 19 includes a protruding end 20, and the protruding end 20 One end is connected to the second spring 21 , the upper end of the extension end 20 is provided with a protrusion 22 , and the end of the second spring 21 away from the extension end 20 is placed in the cavity 17 .

The upper end of the protrusion 22 may be provided with an external thread, which is threadedly connected to the nut, and the outer end of the nut is clamped on the adjacent clamping piece 2 . Since the first fastener 23 and the protruding end 20 of the second fastener 24 are snap-connected, the nut on the upper end of the first fastener is fixed on the clip 2, and the nut on the upper end of the second fastener 24 is loosened , push the second fastener 24 downward, so that the clip 2 below the second fastener 24 protrudes downward for tightening or loosening the inner hexagon to be screwed; when it is necessary to tighten or loosen the outer hexagon to be screwed When the parts are assembled, tighten the nut above the second fastener 24 , loosen the nut above the first fastener 23 , and push up the clip 2 below the first fastener 23 .

Figure 10 is a state diagram of tightening or loosening the hexagon socket to be rotated. First, according to the size of the hexagon socket of the to-be-rotated component, loosen the nuts on the first fastener 23 and the second fastener 24, slide the first fastener The fastener 23 and the second fastener 24 make the second fastener 24 located above the clip 2 which is compatible with the inner diameter of the component to be rotated. The plurality of clips 2 below the fasteners 24 move down accordingly. When the protruding end 20 of the second fasteners 24 is located at the left end of the through hole 18, the second fasteners 24 are released, and the second fastener is tightened. The pieces 24 enter the through hole 18 under the elastic force of the second spring 21 , so that the plurality of clips 2 under the second fastener 24 are in a fixed position with the adjacent clips 2 .

Figure 11 is a state diagram of tightening or loosening the outer hexagonal part to be rotated. First, according to the size of the outer hexagon of the to-be-rotated part, press the second fastener 24 so that the second fastener 24 is located in the same direction as the outer diameter of the part to be rotated. Above the adapted clip 2, at the same time, push the clip 2 upward to drive the second fastener 24 and all clips 2 located inside the clip 2 to move up to the first fastener 23 When the protruding end 20 is located at the right end position of the through hole 18, the clip 2 and the second fastener 24 stop moving upward, so that the plurality of clips 2 below the second fastener 24 and the adjacent clips 2 are in the position of Fixed position.

The clips 2 adjacent to the clamping part 1 are used in conjunction with the upper hook body 33, the lower hook body 33-1, and the concave body 34 through the groove body 36, so as to realize the fixing effect of the adjacent clips 2, through the first fastener 23 or the protruding end 20 of the second fastener 24 is inserted into the through hole 18 to realize the secondary fixing effect of the adjacent clips 2, and the double fixing effect makes the connection between the clamping part 1 and the part to be rotated more stable, avoiding the use process , some of the clips 2 in the clamping part 1 have a problem of falling off.

Example 3

As shown in Figures 12, 13, and 14, the difference from Embodiment 1 is that the clamping part 1 is provided with a cavity 25 penetrating all the clips 2, the cavity 25 has a certain height, and the left and right outermost parts of the cavity 25 are fixed to the clamping part 2. On the clamping part 1, a screw rod 26 is placed through the cavity 25, and both ends of the screw rod 26 are threadedly connected with nuts.

Figure 15 is the state diagram of tightening or loosening the outer hexagonal part to be rotated. According to the size of the outer hexagon of the to-be-rotated part, press the clip 2 that is compatible with the inner diameter of the to-be-rotated part and all the clips 2 inside the clip 2 upward. When moving to a certain position, tighten the nut, all the clamps 2 located in the clamping part 1 are fixed, and at this time, the parts to be spun can be sheathed for tightening or loosening operations.

Figure 16 is the state diagram of tightening or loosening the hexagonal inner hexagon to be rotated. According to the size of the inner hexagon of the to-be-screwed part, push the clamp 2 that is compatible with the outer diameter of the to-be-screwed part and all the clamps 2 inside the clamp 2 Move down, and when it reaches a certain position, tighten the nut. The part to be spun can now be inserted for tightening or loosening.

Example 4

As shown in Figures 17 and 18, the difference from Embodiment 1 is that a slideway 28 and a slide rod 29 are provided in the clamping part 1, the slideway 28 penetrates the clip 2 on one side of the clamping part 1, and one end of the slide rod 29 is fixed to the slideway 28, and is subjected to external force to swing back and forth in the slideway 28, and the other end of the slide rod 29 is movably connected to the clamping part 1 through the shaft body.

When in use, when it is necessary to slide the clip 2 at a proper position in the clamping part 1, one end of the sliding rod 29 is rotated until the sliding rod 29 is clamped above the clip 2 in the appropriate position, and the clip 2 in the appropriate position and its position are fixed. With regard to the outside clips, all clips 2 in the clips 2 in the proper position can be extended upwards or downwards according to the first embodiment.

Example 5

As shown in Figures 19 and 20, the difference from Embodiment 1 is that the clamping part 1 is provided with a rod body, and the upper and lower ends of the rod body are respectively connected with an upper sliding piece 31 and a lower sliding piece 32, and the upper sliding piece 31 and the lower sliding piece 32 are clamped on the upper and lower sides of the clamping part 1 .

The above-mentioned embodiments merely illustrate the principles and effects of the present invention, but are not intended to limit the present invention. Anyone skilled in the art can modify or change the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or changes made by those with ordinary knowledge in the technical field without departing from the spirit and technical idea disclosed in the present invention should still 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).

Images