Wrench

Abstract

The utility model discloses a wrench which comprises a main rod, a driving mechanism and a plurality of abutting pieces used for abutting against the inner corners of screws, and the abutting pieces are respectively arranged at one end of the main rod in a matched mode and distributed in the circumferential direction of the main rod. Each abutting piece can move in the radial direction of the main rod, and the driving mechanism is connected to the main rod and matched with the abutting pieces in a linkage mode so as to drive the abutting pieces to move outwards or inwards in the radial direction of the main rod. The contact area of the abutting piece and the inner angle of the screw is increased, so that the friction force between the abutting piece and the inner angle of the screw is increased, and the wrench is not prone to falling off from the screw when rotating.

Description

TECHNICAL FIELD

[0001] The utility model relates to a spanner. BACKGROUND

[0002] Traditional spanners are all single models, and one model corresponds to one type of internal hexagonal screw or key-shaped screw. During the installation and disassembly of internal hexagonal screws or key-shaped screws, too many screw types need to be repeatedly switched to different spanners to rotate different screws, which makes the work efficiency low, and after repeated disassembly of the existing single model spanner for many times, the internal angle of the screw is expanded and deformed until the tooth is damaged. Therefore, a multi-model integrated spanner is invented, but the original scheme has the following problems: 1. The corresponding internal angle of the screw is supported by the swing arm rotating and supporting, that is, the contact mode of the swing arm and the internal angle of the screw is linear contact, which causes the spanner and the screw to separate due to the small contact area of the swing arm and the internal angle of the screw when rotating the spanner. 2. When loosening different types of screws, different numbers of swing arms are needed, and when the swing arms are needed, the remaining swing arms will interfere with the work of the spanner, and if more complex work scenes are to be applied, multiple spanners need to be prepared to deal with multiple situations, and different spanners need to be switched during work, which reduces work efficiency. SUMMARY

[0003] The utility model provides a spanner in view of the technical problems existing in prior art, through the improvement of structure, the contact area of the top resisting piece and the internal angle of the screw is increased, thereby increasing the friction between the two, so that the spanner is not easy to fall off with the screw when rotating.

[0004] The utility model solves the technical problems and adopts the technical scheme that a spanner, which comprises a main rod, a driving mechanism and a plurality of top resisting pieces for supporting the internal angle of a screw, the plurality of top resisting pieces are matched at one end of the main rod respectively and are distributed along the circumference of the main rod, each top resisting piece is arranged to be movable along the radial direction of the main rod, the driving mechanism is connected to the main rod and is linked with each top resisting piece to drive the plurality of top resisting pieces to move outward or inward along the radial direction of the main rod respectively.

[0005] Further, the driving mechanism comprises a driving piece which is a rod piece or a rod assembly, the main rod is a hollow structure, the driving piece is movably arranged in the main rod along the axial direction of the main rod, and the driving piece provides the driving force for the movement of the plurality of top resisting pieces by moving along the axial direction of the main rod.

[0006] Further, the driving mechanism further comprises a plurality of swing arms corresponding to the plurality of top abutting pieces, one to one, one end of each swing arm is rotatably connected with the corresponding top abutting piece, and the other end of each swing arm is movably connected with the driving piece; as the driving piece moves along the axial direction of the main rod, the driving piece drives each swing arm to swing, so that each swing arm drives the corresponding top abutting piece to move.

[0007] Further, the driving piece and each top abutting piece are respectively matched with a pushing structure, so that when the driving piece moves axially towards one end of the main rod, each top abutting piece is pushed by the pushing structure to move outward along the radial direction of the main rod.

[0008] Further, the pushing structure comprises a conical body provided on the driving piece and an arc inclined surface provided on each top abutting piece, the diameter of the conical body gradually increases from one end of the main rod to the other end, and the arc inclined surface of each top abutting piece is adapted to fit the outer surface of the conical body.

[0009] Further, the top abutting piece is located outside the main rod, and the side wall of the main rod is provided with a limiting hole corresponding to each swing arm, the limiting hole is in a strip shape and extends along the axial direction of the main rod, and the other end of the swing arm passes through the limiting hole and movably connects with the driving piece.

[0010] Further, the driving piece comprises a rotating rod, a pushing rod and a pressing rod arranged in sequence from the other end of the main rod to one end, the rotating rod is threadedly connected with the main rod and abuttingly connected with one end of the pushing rod, the other end of the swing arm is tightly pressed between the other end of the pushing rod and one end of the pressing rod, the other ends of adjacent swing arms abut against each other, and the other end of the pressing rod is used for pushing each top abutting piece to move outward along the radial direction of the main rod; a reset piece is matched between the pressing rod and the main rod, so as to reset the pressing rod away from one end of the main rod when the rotating rod reversely rotates relative to the main rod.

[0011] Further, each top abutting piece is located outside one end of the main rod, and a guide structure is matched between each top abutting piece and the main rod, so as to guide the movement of the top abutting piece; the guide structure comprises a guide groove provided on the side of the main rod corresponding to the top abutting piece, and the top abutting piece is partially accommodated in the guide groove, and / or the guide structure comprises a guide protrusion provided on the top abutting piece and a guide hole provided on the side wall of the main rod, the guide protrusion extends along the radial direction of the main rod and is provided in the guide hole.

[0012] Further, the top abutting part is provided with at least one top abutting portion, the top abutting portion has an obtuse angle structure which can enter the inner angle of the internal hexagonal screw, and the obtuse angle structure is matched with the inner angle of the internal hexagonal screw; or the top abutting portion has an acute angle structure which can enter the inner angle of the torx screw, and the acute angle structure is matched with the inner angle of the torx screw.

[0013] Further, the number of the top abutting portions is multiple, the multiple top abutting portions are arranged in a stepped manner along the axial direction of the main rod, and the sizes of the multiple top abutting portions gradually increase from one end of the main rod to the other end.

[0014] Compared with the prior art, the utility model has the following beneficial effects:

[0015] 1、 the utility model discloses a plurality of top abutting parts are arranged on the main rod, and the top abutting part is provided with at least one top abutting portion, the top abutting portion has an obtuse angle structure which can enter the inner angle of the internal hexagonal screw, and the obtuse angle structure is matched with the inner angle of the internal hexagonal screw.

[0016] 2、 the utility model discloses a plurality of top abutting parts are arranged on the main rod, and the top abutting part is provided with at least one top abutting portion, the top abutting portion has an obtuse angle structure which can enter the inner angle of the internal hexagonal screw, and the obtuse angle structure is matched with the inner angle of the internal hexagonal screw.

[0017] 3、 the utility model discloses a plurality of top abutting parts are arranged on the main rod, and the top abutting part is provided with at least one top abutting portion, the top abutting portion has an obtuse angle structure which can enter the inner angle of the internal hexagonal screw, and the obtuse angle structure is matched with the inner angle of the internal hexagonal screw.

[0018] 4、 the utility model discloses a plurality of top abutting parts are arranged on the main rod, and the top abutting part is provided with at least one top abutting portion, the top abutting portion has an obtuse angle structure which can enter the inner angle of the internal hexagonal screw, and the obtuse angle structure is matched with the inner angle of the internal hexagonal screw.

[0019] 5、 the utility model discloses a plurality of top abutting parts are arranged on the main rod, and the top abutting part is provided with at least one top abutting portion, the top abutting portion has an obtuse angle structure which can enter the inner angle of the internal hexagonal screw, and the obtuse angle structure is matched with the inner angle of the internal hexagonal screw.

[0020] 6、The number of the top resistance parts is multiple, the multiple top resistance parts are arranged in a stepped manner along the axial direction of the main rod, and the size of the multiple top resistance parts gradually increases from one end of the main rod to the other end, so that the utility model can meet the use requirement of different size screws, improve the work efficiency, and when loosening or tightening different types of screws, the number of the top resistance parts is consistent, the problem that the remaining swing arms interfere with the work of the required swing arm in the prior art can be avoided, and only one wrench can be used in a complex scene.

[0021] The utility model will be further explained in detail in combination with the drawings and examples; but the wrench of the utility model is not limited to the examples. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 is the exploded schematic view of the utility model;

[0023] Figure 2 is the three-dimensional structure schematic view of the utility model Figure One (top resistance part is closed);

[0024] Figure 3 is the cross-sectional schematic view of the utility model Figure One (top resistance part is closed);

[0025] Figure 4 is the three-dimensional structure schematic view of the utility model Figure Two (top resistance part is opened in the process);

[0026] Figure 5 is the cross-sectional schematic view of the utility model Figure Two (top resistance part is opened in the process);

[0027] Figure 6 is the three-dimensional structure schematic view of the utility model Figure Three (top resistance part is opened to the maximum);

[0028] Figure 7 is the cross-sectional schematic view of the utility model Figure Three (top resistance part is opened to the maximum);

[0029] Figure 8 is the cooperation schematic view of the top resistance part and the internal hexagonal screw of the utility model Figure One (top resistance part is closed);

[0030] Figure 9 is the cooperation schematic view of the top resistance part and the internal hexagonal screw of the utility model Figure Two (top resistance part is opened in the process);

[0031] Figure 10 is the cooperation schematic view of the top resistance part and the internal hexagonal screw of the utility model Figure Three(top resistance piece is opened to maximum);

[0032] Figure 11 is the bottom view of the utility model;

[0033] Figure 12 is the schematic view of the transverse section of the utility model (spherical structure is at);

[0034] Figure 13 is the schematic view of the three-dimensional structure of the main rod of the utility model;

[0035] Figure 14 is the schematic view of the three-dimensional structure of the top resistance piece of the utility model;

[0036] Figure 15 is the schematic view of the three-dimensional structure of the swing arm piece of the utility model;

[0037] Figure 16 is the schematic view of the cooperation of the top resistance piece and swing arm of the utility model;

[0038] Figure 17 is the schematic view of the three-dimensional structure of the utility model Figure Four (connecting handle);

[0039] Figure 18 is the schematic view of the three-dimensional structure of the utility model Figure Four (connecting screw);

[0040] In the drawing: 1, main rod;11, guide groove;12, limit hole;13, guide hole;14, second limit part;15, screw hole;2, rotating rod;3, push rod;4, pressing rod;41, cone;42, first limit part;5, swing arm;51, spherical structure;52, rotating shaft hole;6, top resistance piece;61, circular arc inclined surface;62, guide convex part;63, top resistance part;631, first top resistance part;632, second top resistance part;633, third top resistance part;64, rotating shaft;7, spring;8, handle;9, screw. DETAILED DESCRIPTION

[0041] In the utility model, the terms "first", "second", "third" and the like are only used to distinguish similar objects, and are not used to describe a specific order or sequence, and cannot be understood as indicating or implying relative importance. In the description, the directions or position relationships indicated by "upper", "lower", "left", "right", "front", "rear", "inner", "outer", "top / bottom end" and the like are based on the directions or position relationships shown in the drawings, and are only for the convenience of describing the utility model, and are not used to indicate or imply that the device must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as limiting the protection scope of the utility model. For ordinary skilled persons in the art, the specific meanings of the above terms in the present application can be understood according to the specific circumstances.

[0042] In addition, in the description of the utility model, unless otherwise specified, "a plurality of" refers to two or more than two. "And / or", the association relationship of the associated object is described, which means that there can be three kinds of relationships, for example, A and / or B, which can represent the three cases of A existing alone, A and B existing simultaneously, and B existing alone. The character " / " generally represents that the associated objects before and after are in an "or" relationship. In the description of the utility model, unless otherwise specified and limited, the terms "mounting", "provided with", "sleeved / connected", "connected" and the like should be understood broadly, for example, "connected", which can be fixedly connected, can also be detachably connected, or integrally connected, which can be mechanically connected, can also be electrically connected, can be directly connected, can also be indirectly connected through an intermediate medium, can be the communication between two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0043] Please see Figures 1-18 The utility model discloses a wrench, comprising a main rod 1, a driving mechanism and a plurality of abutting pieces 6 for abutting the inner angle of screw, the plurality of abutting pieces 6 are matched at one end of the main rod 1 respectively and are distributed along the circumference of the main rod 1. Each abutting piece 6 is arranged to be movable along the radial direction of the main rod 1, the driving mechanism is connected to the main rod 1 and is linked with each abutting piece 6 to drive the plurality of abutting pieces 6 to move outward or inward along the radial direction of the main rod 1 respectively.

[0044] The driving mechanism comprises a driving piece, which is a rod piece or a rod assembly. The main rod is a hollow structure. The driving piece is movably arranged in the main rod 1 along the axial direction of the main rod 1, and the driving piece provides driving force for the movement of the plurality of abutting pieces 6 by moving along the axial direction of the main rod 1. The driving mechanism further comprises a plurality of swing arms 5 corresponding to the plurality of abutting pieces 6. One end of each swing arm 5 is rotatably connected to the corresponding abutting piece 6, and the other end of each swing arm 5 is movably connected to the driving piece. With the movement of the driving piece along the axial direction of the main rod, the driving piece drives each swing arm 5 to swing, so that each swing arm 5 drives the corresponding abutting piece 6 to move. The driving piece can be provided with a reset piece to reset the driving piece and drive the plurality of abutting pieces to move inward. The reset piece can be an elastic piece or the like. In other embodiments, the driving piece can also be reset by reverse rotation or the like.

[0045] The driving member is matched with each top abutting piece 6 with a pushing structure, so that when the driving member moves axially to one end of the main rod 1, each top abutting piece 6 is pushed by the pushing structure to move outward along the radial direction of the main rod 1. The pushing structure comprises a conical body provided on the driving member and an arc slope 61 provided on each top abutting piece 6, and the diameter of the conical body gradually increases from one end of the main rod to the other end, and the arc slope 61 of each top abutting piece 6 is adapted to fit the outer peripheral surface of the conical body.

[0046] The top abutting piece 6 is located outside the main rod 1, and the side wall of the main rod 1 is provided with a limiting hole 12 corresponding to each swing arm 5, the limiting hole 12 is in a strip shape and extends along the axial direction of the main rod 1, and the other end of the swing arm 5 passes through the limiting hole 12 and is movably matched with the driving member.

[0047] Specifically, the driving member is a rod assembly, which comprises a rotating rod 2, a pushing rod 3 and a pressing rod 4 arranged in sequence from the other end of the main rod 1 to one end, and the rotating rod 2 is threadedly connected with the main rod 1 and abuttingly matched with one end of the pushing rod 3, the other end of the swing arm 5 is tightly pressed between the other end of the pushing rod 3 and one end of the pressing rod 4, and the other ends of the adjacent swing arms 5 abut against each other, and the other end of the pressing rod 4 is provided with the above-mentioned conical body 41 for pushing each top abutting piece 6 to move outward along the radial direction of the main rod 1. In other embodiments, the driving member is a pushing rod, and the side wall surface of the pushing rod is provided with a groove corresponding to the swing arm, and the other end of the swing arm is rotatably connected in the groove.

[0048] The pressing rod 4 is matched with the main rod 1 with a reset member, and the reset member is provided on the driving member to reset the pressing rod 4 to move away from one end of the main rod 1 when the rotating rod 2 reversely rotates relative to the main rod 1 (i.e. counterclockwise rotation of the rotating rod 2). Specifically, the reset member is a spring 7, which is sleeved on the pressing rod 4, and the two ends of the spring 7 are abuttingly matched with a first limiting portion 42 provided on the outer side of the pressing rod 4 and a second limiting portion 14 provided on the inner side of the main rod 1, respectively. The rotating rod 2 is a screw, and the head thereof is exposed outside the other end of the main rod 1.

[0049] The top abutting piece 6 is provided with a rotating shaft 64, one end of the swing arm 5 is provided with a rotating shaft hole 52, and the rotating shaft 64 is inserted and assembled in the rotating shaft hole 52 to realize the rotating connection between the swing arm 5 and the top abutting piece 6, and the other end of the swing arm 5 is provided with a spherical structure 51, which is tightly pressed between the other end of the pushing rod 3 and one end of the pressing rod 4, and the spherical structures 51 of the adjacent swing arms 5 abut against each other, as shown in Figure 12 , so as to limit the swing arm 5, avoiding the swing arm 5 moving inward of the main rod 1, thereby avoiding the top abutting piece 6 tilting during the movement.

[0050] Each top abutting piece 6 is matched with the main rod 1 with a guide structure to provide guidance for the movement of the top abutting piece 6. The guide structure includes a guide groove 11 arranged on the outer side of the main rod 1 corresponding to the top abutting piece 6, and the top abutting piece 6 is partially accommodated in the guide groove 11 to avoid the movement of the top abutting piece 6 along the circumferential direction of the main rod 1. The guide structure further includes a guide protrusion 62 arranged on the top abutting piece 6 and a guide hole 13 arranged on the side wall of the main rod 1, and the guide protrusion 62 extends along the radial direction of the main rod 1 and is arranged in the guide hole 13 to avoid the movement of the top abutting piece 6 along the circumferential direction of the main rod 1.

[0051] The top abutting piece 6 is provided with at least one top abutting part 63, and the top abutting part 63 has an obtuse angle structure that can enter the inner angle of an internal hexagonal screw, which is matched with the inner angle of the internal hexagonal screw. In other embodiments, the top abutting part has an acute angle structure that can enter the inner angle of a torx screw, which is matched with the inner angle of the torx screw.

[0052] The number of top abutting parts 63 is multiple, and the multiple top abutting parts 63 are arranged in a stepped manner along the axial direction of the main rod 1, and the size of the multiple top abutting parts gradually increases from one end of the main rod 1 to the other end. Specifically, the number of top abutting pieces 6 is six, and the number of top abutting parts 63 is three, so as to distinguish, the smallest top abutting part is named as the first top abutting part 631, the medium top abutting part is named as the second top abutting part 632, and the largest top abutting part is named as the third top abutting part 633, as shown in Figure 14 .

[0053] The side wall of the main rod 1 is provided with multiple threaded holes 15, and the multiple threaded holes 15 are distributed along the circumferential direction of the main rod 1. Specifically, as shown in Figure 17 , the number of threaded holes 15 is two, and in use, the two handles 8 can be respectively screwed into the two threaded holes 15, so that the operator can rotate the utility model by means of the handle, or, as shown in Figure 18 , the two screws 9 can be respectively screwed into the two threaded holes 15, and the sleeve is sleeved on the main rod 1, and the sleeve is clamped by the screw 9 to avoid the sleeve from falling down, and the utility model is rotated by means of a torque wrench.

[0054] In work, the head of the rotating rod 2 is rotated by hand to drive the pressing rod 44 downward, so that the pressing rod 44 drives the swing arm 5 to swing, so that the swing arm 5 drives the top abutting piece 6 to move, at the same time, the cone 41 at the other end of the pressing rod 4 pushes each top abutting piece 6, so that the top abutting part 63 of the top abutting piece 6 abuts on the inner angle of the screw, because the swing arm 5 and the other end of the pressing rod 4 firmly clamp the top abutting piece 6, so that the top abutting piece 6 cannot move again, at this time, the top abutting part 63 of the top abutting piece 6 is closely combined with the inner angle of the screw, and the top abutting part 63 and the inner angle of the screw are in surface contact, and there is no gap between them, so that the utility model can be firmly clamped with the screw, and the main rod 1 can be safely and forcibly rotated by means of the handle or the torque wrench to loosen or tighten the screw. As shown in Figure 2 , Figure 3 ,Figure 8 As shown in the figure, when the top abutting pieces 6 are close together, the utility model can be the smallest screw. Figure 4 、 Figure 5 、 Figure 9 As shown in the figure, the rotation of the rotating rod 2 drives the push rod 3 and the pressing rod 4 to move downward, so that the swing arm 5 and the conical body 41 at the other end of the pressing rod 4 gradually separate the top abutting pieces 6, so as to change the size of the utility model screw. Figure 6 、 Figure 7 、 Figure 10 As shown in the figure, when the top end of the conical body 41 at the other end of the pressing rod 4 is in contact with the top abutting pieces 6, the utility model screw is the largest in size.

[0055] In this embodiment, the utility model can be loosened and tightened to any size of 2-10mm internal hexagonal screw. In actual operation, since the internal hexagonal screw with a size of 2-3mm has a small inner diameter, when the screw is loosened and tightened, the first top abutting part 631 of the top abutting piece 6 is located at the inner angle of the internal hexagonal screw. When the internal hexagonal screw with a size of 4-6mm is loosened and tightened, the second top abutting part 632 of the top abutting piece 6 is located at the inner angle of the internal hexagonal screw. When the internal hexagonal screw with a size of 8-10mm is loosened and tightened, the third top abutting part 633 of the top abutting piece 6 is located at the inner angle of the internal hexagonal screw.

[0056] The utility model wrench makes the contact between the top abutting piece 6 and the inner angle of the screw be surface contact, increases the contact area between the top abutting piece 6 and the inner angle of the screw, thereby increasing the friction between the two, so that the wrench is not easy to fall off the screw when rotating. At the same time, the utility model uses the same number of top abutting pieces when loosening and tightening different types of screws, and only one wrench can be used in complex scenes.

[0057] The utility model wrench does not involve the same or can be realized by the prior art.

[0058] The above embodiments are only used to further illustrate the utility model wrench, but the utility model is not limited to the embodiments, and any simple modification, equivalent change and modification according to the technical essence of the utility model of the above embodiments all fall within the protection scope of the utility model technical scheme.

Claims

1. A wrench comprising a main rod, a driving mechanism, and a plurality of abutting pieces for abutting against an inner corner of a screw, the plurality of abutting pieces being respectively fitted at one end of the main rod and distributed in a circumferential direction of the main rod; characterized in that: Each of the plurality of abutting members is arranged to be movable along a radial direction of the main rod, and the driving mechanism is connected to the main rod and cooperates with each of the plurality of abutting members to drive the plurality of abutting members to move outwardly or inwardly along the radial direction of the main rod.

2. The wrench of claim 1, wherein: The driving mechanism comprises a driving member which is a rod or a rod assembly, and the main rod is a hollow structure, the driving member is movably arranged in the main rod along an axial direction of the main rod, and the driving member provides driving force for the movement of the plurality of abutting members by moving along the axial direction of the main rod.

3. The wrench of claim 2, wherein: The driving mechanism further comprises a plurality of swing arms corresponding to the plurality of abutting members, one end of each swing arm is rotatably connected to a corresponding abutting member, and the other end of each swing arm is movably connected to the driving member; as the driving member moves along the axial direction of the main rod, the driving member drives each swing arm to swing, and each swing arm drives a corresponding abutting member to move.

4. The wrench of claim 3, wherein: The driving member and each abutting member are respectively provided with a pushing structure, so that when the driving member moves axially towards one end of the main rod, each abutting member is pushed by the pushing structure to move outwardly along the radial direction of the main rod.

5. The wrench of claim 4, wherein: The pushing structure comprises a conical body provided on the driving member and an arcuate inclined surface provided on each abutting member, the diameter of the conical body gradually increases from one end of the main rod to the other end, and the arcuate inclined surface of each abutting member is adapted to fit the outer surface of the conical body.

6. The wrench of claim 3, wherein: The abutting members are located outside the main rod, and the side wall of the main rod is provided with a limiting hole corresponding to each swing arm, the limiting hole is in a strip shape and extends along the axial direction of the main rod, and the other end of the swing arm passes through the limiting hole and movably cooperates with the driving member.

7. A spanner according to any one of claims 3-6, characterised in that: The driving member comprises a rotating rod, a pushing rod and a pressing rod arranged in sequence from the other end of the main rod to one end, the rotating rod is threadedly connected to the main rod and abuttingly cooperates with one end of the pushing rod, the other end of the swing arm is tightly pressed between the other end of the pushing rod and one end of the pressing rod, the other ends of adjacent swing arms abut against each other, and the other end of the pressing rod is used to push each abutting member to move outwardly along the radial direction of the main rod; a reset member is arranged between the pressing rod and the main rod to reset the pressing rod away from one end of the main rod when the rotating rod reversely rotates relative to the main rod.

8. The wrench of claim 1, wherein: Each of the abutting members is located outside one end of the main rod, and a guide structure is arranged between each abutting member and the main rod to guide the movement of the abutting member; the guide structure comprises a guide groove arranged on the outer side of the main rod corresponding to the abutting member, and the abutting member is partially accommodated in the guide groove, and / or the guide structure comprises a guide protrusion arranged on the abutting member and a guide hole arranged on the side wall of the main rod, the guide protrusion extends along the radial direction of the main rod and is arranged in the guide hole.

9. The wrench of claim 1, wherein: The top abutting part is provided with at least one top abutting part, which has an obtuse angle structure that can enter the inner angle of an internal hexagonal screw and is matched with the inner angle of the internal hexagonal screw; or the top abutting part has an acute angle structure that can enter the inner angle of a torx screw and is matched with the inner angle of the torx screw.

10. The wrench of claim 9, wherein: The number of the top abutting parts is multiple, the multiple top abutting parts are arranged in a stepped manner along the axial direction of the main rod, and the sizes of the multiple top abutting parts gradually increase from one end of the main rod to the other end.

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