Torque wrench

Abstract

The utility model discloses a torque wrench which comprises a wrench body and a marking assembly, a containing groove used for containing the head of a fastener is formed in the wrench portion of the wrench body, the marking assembly comprises a coloring marking piece arranged on the wrench portion, and the coloring marking piece is provided with a plurality of marking faces which are sequentially connected in the first direction. Every two adjacent marking surfaces are arranged at an included angle, the multiple marking surfaces comprise a first marking surface and a second marking surface which are adjacent, the first marking surface is located on the inner circumferential side of the wrench part, the wrench part is provided with a first side and a second side which are oppositely arranged in the rotating axis direction of the wrench part, and the second side of the wrench part is close to one side of a workpiece matched with the fastener; the second marking face is located on the second side of the wrench part. According to the torque wrench disclosed by the utility model, the phenomena of marking omission or marking mistake and the like can be avoided, and the torque wrench is also beneficial to saving manpower and reducing non-value-added working hours, so that whether a fastener is fastened and confirmed or not can be conveniently distinguished, and the production efficiency can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of wrenches, in particular to a torque wrench. Background Art

[0002] In the related art, during the final assembly process of an automobile, high quality requirements are imposed on some fastening connection parts on the automobile that involve personal safety. Usually, operators need to use a torque wrench to confirm the tightness of these parts, and then use a marking pen to mark the corresponding fasteners to confirm that the fasteners have been tightened properly, thereby ensuring product quality.

[0003] However, relying on operators to manually mark fasteners one by one can result in omissions or mislabeling, and this can lead to significant labor consumption during the assembly process, resulting in significant non-value-added work hours and low production efficiency. Therefore, improvements are needed. Utility Model Content

[0004] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, one purpose of the present invention is to provide a torque wrench that can avoid the phenomenon of missing or incorrect marking, and is also conducive to saving manpower and reducing non-value-added working hours, thereby facilitating the identification of whether the fastener is tightened and confirming it, and is conducive to improving production efficiency. The colored mark made by the second marking surface and the surface of the workpiece on the surface of the workpiece can also be used to further distinguish whether the fastener is tightened in place, and the first marking surface and the second marking surface can form a continuous colored mark along the first direction on the fastener. In this way, the relative positional relationship between the first marking surface and the second marking surface along the circumferential direction can also be used to monitor whether the fastener has become loose after tightening confirmation.

[0005] According to the torque wrench of the embodiment of the present utility model, it includes: a wrench body, including a wrench part, and the wrench part is formed with a receiving groove for accommodating the head of a fastener; a marking assembly, which is arranged on the wrench body and includes a colored marking part, and the colored marking part is arranged on the wrench part and has a plurality of marking surfaces connected in sequence along a first direction, and two adjacent marking surfaces are arranged at an angle, and the plurality of marking surfaces include adjacent first marking surfaces and second marking surfaces, and the first marking surface is located on the inner circumference side of the wrench part, and the wrench part has a first side and a second side arranged opposite to each other along the first direction, and the second side of the wrench part is a side close to the workpiece cooperating with the fastener, and the second marking surface is located on the second side of the wrench part, and the first direction is the direction of the rotation axis of the wrench part.

[0006] According to the torque wrench of the embodiment of the present invention, a colored marking part having multiple marking surfaces connected in sequence along a first direction is provided. In this way, when the torque wrench is used to apply torque to the fastener, the marking operation of the fastener is automatically completed through the colored marking part. This can avoid the phenomenon of missing marking or incorrect marking, and is also beneficial to saving manpower and reducing non-value-added working hours, thereby making it easier to distinguish whether the fastener is tightened and helping to improve production efficiency.

[0007] In addition, by setting the two adjacent marking surfaces at an angle, and making the first marking surface located on the inner circumference side of the wrench part, and the second marking surface located on the second side of the workpiece that cooperates with the fastener, when the head of the fastener is accommodated in the accommodating groove of the wrench part, the first marking surface is opposite to the outer circumference surface of the head and can be colored on the outer circumference surface of the head, and the second marking surface is opposite to the surface of the workpiece and can be colored on the surface of the workpiece. The colored mark on the surface of the workpiece can be used to further distinguish whether the fastener is fastened in place, and the first marking surface and the second marking surface can form a continuous colored mark along the first direction on the fastener. In this way, referring to the relative position relationship of the first marking surface and the second marking surface along the circumferential direction can also be used to monitor whether the fastener is loose after the fastening is confirmed.

[0008] According to some embodiments of the present invention, the colored marking part has elastic deformation capability, and in the direction toward the rotation axis close to the wrench part, the first marking surface protrudes from the inner circumferential surface of the wrench part, the end face of the wrench part located on the second side is the wrench end face, and in the direction toward the second side close to the wrench part, the second marking surface protrudes from the wrench end face.

[0009] According to some embodiments of the present invention, the plurality of marking surfaces further include a third marking surface, and the third marking surface is connected to a side of the first marking surface away from the second marking surface along the first direction.

[0010] According to some embodiments of the present invention, a mounting groove is formed on the inner wall of the wrench part, the end face of the wrench part located on the second side is the wrench end face, the mounting groove passes through the wrench end face, and the colored marking piece is accommodated in the mounting groove.

[0011] According to some embodiments of the present invention, the marking assembly includes a liquid supply component for supplying marking coloring liquid to the colored marking component. The liquid supply component is arranged on the first side of the wrench part and has a storage cavity for storing the marking coloring liquid.

[0012] According to some embodiments of the present invention, the inner peripheral wall of the wrench part is formed with a mounting groove, the end face of the wrench part located on the second side is the wrench end face, the mounting groove passes through the wrench end face, the colored marking part is movably accommodated in the mounting groove, the marking assembly also includes a limiting assembly, the limiting assembly is located on the first side of the wrench part and includes a support rod and a limiting spring, the end face of the wrench part located on the first side is formed with a through hole, the support rod extends along the first direction, one end of the support rod is passed through the through hole and is connected to the colored marking part, the other end of the support rod is provided with a limiting block, the limiting spring is sleeved on the outer peripheral side of the support rod and the two ends of the limiting spring respectively abut the limiting block and the wrench part.

[0013] According to some optional embodiments of the present invention, the marking assembly also includes a liquid supply part for supplying marking coloring liquid to the colored marking part, the liquid supply part is arranged on the first side of the wrench part and has a storage cavity, the storage cavity is used to store the marking coloring liquid, the liquid supply part is formed into a tubular shape extending along the first direction, and the limiting assembly is installed in the storage cavity.

[0014] According to some optional embodiments of the present invention, an opening is formed at one end of the liquid supply component away from the wrench portion, the limiting block blocks the opening, and a filling port connected to the storage chamber is formed on the limiting block.

[0015] According to some optional embodiments of the present invention, the mounting groove includes a first groove section and a second groove section arranged at an angle, the first groove section is formed on the inner circumferential wall of the wrench part and extends along the first direction, the first groove section passes through the wrench end face, and the cross-section of the first groove section is formed as a trapezoid that increases in the radial inward direction of the wrench part.

[0016] According to some optional embodiments of the present invention, the wrench body is a socket wrench, and the wrench part is the socket part of the socket wrench.

[0017] Additional aspects and advantages of the present invention will be given in part in the following description and will become apparent from the following description or learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0019] Figure 1 1 is a schematic diagram of the assembly of a torque wrench and a fastener according to some embodiments of the present invention;

[0020] Figure 2 yes Figure 1 Front view of the torque wrench and fastener in Figure 1;

[0021] Figure 3 yes Figure 1 A side view of a torque wrench and fastener in FIG;

[0022] Figure 4 yes Figure 1 Bottom view of the torque wrench and fastener in FIG;

[0023] Figure 5 yes Figure 4 Cross-sectional view at AA in the middle;

[0024] Figure 6 yes Figure 1 Schematic diagram of the structure of the torque wrench;

[0025] Figure 7 yes Figure 1 The front view of the torque wrench in FIG;

[0026] Figure 8 yes Figure 1 A side view of a torque wrench in FIG.

[0027] Figure 9 yes Figure 1 Bottom view of the torque wrench in FIG;

[0028] Figure 10 yes Figure 9 Cross-sectional view at the middle BB;

[0029] Figure 11 yes Figure 10 The enlarged view of point C in FIG.

[0030] Figure 12 yes Figure 10 The enlarged view of point D in FIG.

[0031] Figure 13 yes Figure 1 A top view of the torque wrench in FIG.

[0032] Figure 14 yes Figure 1 Exploded diagram of a torque wrench in Figure 1.

[0033] Reference numerals:

[0034] 100. Torque wrench;

[0035] 1. Wrench body; 11. Wrench portion; 111. Accommodation groove; 112. Wrench end face; 113. Mounting groove; 1131. First groove section; 1132. Second groove section; 114. Through hole; 12. Wrench rod;

[0036] 2. Mark components;

[0037] 3. Colored marking element; 31. First marking surface; 32. Second marking surface; 33. Third marking surface; 34. Storage hole;

[0038] 4. Liquid supply part; 41. Storage chamber;

[0039] 5. Limiting assembly; 51. Support rod; 511. Limiting block; 52. Limiting spring; 53. Guide piece;

[0040] 6. Open your mouth;

[0041] 7. Filling port;

[0042] 200. Fasteners. DETAILED DESCRIPTION

[0043] The following describes embodiments of the present invention in detail. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended only to explain the present invention and are not to be construed as limiting the present invention.

[0044] Reference below Figures 1-14 A torque wrench 100 according to an embodiment of the present invention is described.

[0045] refer to Figures 1-14 According to the torque wrench 100 of the embodiment of the present invention, the torque wrench 100 includes: a wrench body 1 and a marking component 2, the marking component 2 is arranged on the wrench body 1, the wrench body 1 includes a wrench portion 11, and the wrench portion 11 is formed with a receiving groove 111 for accommodating the head of the fastener 200.

[0046] Optionally, the wrench body 1 further includes a wrench rod 12 , and the wrench rod 12 is connected to one end of the wrench portion 11 .

[0047] The marking assembly 2 includes a colored marking member 3, which is provided on the wrench part 11 and has multiple marking surfaces connected in sequence along a first direction. When the head of the fastener 200 is accommodated in the accommodating groove 111 of the wrench part 11, the multiple marking surfaces can automatically form a mark on the head of the fastener 200 while the torque wrench 100 applies torque to the fastener 200. The mark can easily distinguish and confirm whether the fastener 200 has been tightened and qualified, and there is no need to manually mark the fastener 200 with a marking pen or the like. This can avoid the phenomenon of missing marks or making wrong marks, and is also beneficial to saving manpower and reducing non-value-added working hours, thereby helping to improve installation production efficiency.

[0048] The two adjacent marking surfaces are arranged at an angle. The multiple marking surfaces include a first marking surface 31 and a second marking surface 32. The first marking surface 31 is located on the inner circumference of the wrench portion 11. The wrench portion 11 has a first side and a second side arranged opposite each other along a first direction. The second side of the wrench portion 11 is the side closer to the workpiece that mates with the fastener 200. The second marking surface 32 is located on the second side of the wrench portion 11. The first direction is the direction of the rotation axis of the wrench portion 11. The first marking surface 31 is opposite to the outer circumference of the head and is used to color and mark the outer circumference of the head. The second marking surface 32 is opposite to the surface of the workpiece that mates with the fastener 200 and is used to color and mark the surface of the workpiece. The color mark on the workpiece surface can be used to further distinguish whether the fastener 200 is tightened in place.

[0049] The adjacent first marking surfaces 31 and second marking surfaces 32 are connected along the first direction, so that the colored marks formed by the first marking surfaces 31 and the second marking surfaces 32 on the fastener 200 are also in a continuous state. If the fastener 200 is tightened and confirmed by the torque wrench 100, the relative position between the fastener 200 and the mating workpiece changes, for example, after the fastener 200 becomes loose or becomes loose, the continuity between the colored mark on the outer peripheral surface of the head and the colored mark on the workpiece will change, which is conducive to timely detection of changes in the fastener 200.

[0050] In addition, the marking formed on the fastener 200 by the colored marking member 3 is also helpful in improving the consistency of the marking.

[0051] For example, the torque wrench 100 is a socket wrench, and the torque wrench 100 is used to apply torque to the fastener 200 to tighten the fastener 200 and a workpiece matched with the fastener 200 .

[0052] Optionally, the colored marking element 3 is a colored ink pad.

[0053] Optionally, a storage hole 34 is formed inside the coloring marker 3, and the storage hole 34 can be used to store the marking coloring liquid. The setting of the storage hole 34 can store more marking coloring liquid in the coloring marker 3, and the marking coloring liquid can better infiltrate the coloring marker 3 to facilitate its coloring marking.

[0054] According to the torque wrench 100 of the embodiment of the present invention, a colored marking member 3 having multiple marking surfaces connected in sequence along a first direction is provided. In this way, when the torque wrench 100 is used to apply torque to the fastener 200, the marking operation of the fastener 200 is automatically completed through the colored marking member 3. This can avoid the phenomenon of missing marking or incorrect marking, and is also beneficial to saving manpower and reducing non-value-added working hours, thereby making it easier to distinguish whether the fastener 200 is tightened and helping to improve production efficiency.

[0055] In addition, by setting the two adjacent marking surfaces at an angle, and making the first marking surface 31 located on the inner circumference of the wrench part 11, and the second marking surface 32 located on the second side of the workpiece that cooperates with the fastener 200, when the head of the fastener 200 is accommodated in the accommodating groove 111 of the wrench part 11, the first marking surface 31 is opposite to the outer circumference of the head and can be marked with a color on the outer circumference of the head, and the second marking surface 32 is opposite to the surface of the workpiece and can be marked with a color on the surface of the workpiece. The color mark on the surface of the workpiece can be used to further distinguish whether the fastener 200 is fastened in place, and the first marking surface 31 and the second marking surface 32 can form a continuous color mark along the first direction on the fastener 200. In this way, referring to the relative position relationship of the first marking surface 31 and the second marking surface 32 along the circumferential direction can also be used to monitor whether the fastener 200 is loose after the fastening is confirmed.

[0056] refer to Figure 10-12 According to some embodiments of the present invention, the colored marker 3 is elastically deformable. In a direction approaching the rotational axis of the wrench portion 11, the first marking surface 31 protrudes from the inner circumference of the wrench portion 11. The end surface of the wrench portion 11 located on the second side is the wrench end surface 112. In a direction approaching the second side of the wrench portion 11, the second marking surface 32 protrudes from the wrench end surface 112. By making the colored marker 3 elastically deformable, when the head of the fastener 200 contacts the first marking surface 31 and the mating workpiece of the fastener 200 contacts the second marking surface 32, the first marking surface 31 and the second marking surface 32 elastically deform, causing the colored marking to be imprinted on the outer circumference of the head of the fastener 200 and the surface of the workpiece. This prevents the colored marker 3 from interfering with the mating of the fastener 200 with the torque wrench 100.

[0057] refer to Figure 10-12 According to some embodiments of the present invention, the multiple marking surfaces further include a third marking surface 33, which is connected to the side of the first marking surface 31 that is away from the second marking surface 32 along the first direction. When the head of the fastener 200 is accommodated in the receiving groove 111 of the wrench portion 11, the third marking surface 33 is opposite the end face of the head and is used to color the end face of the head. The third marking surface 33 can be used to determine whether the fastener 200 has been tightened and confirmed to be qualified. By including the third marking surface 33 in the multiple marking surfaces, the third marking surface 33 is used to form a colored mark on the end face of the head of the fastener 200, and the colored mark at this position is convenient for observation and confirmation.

[0058] refer to Figures 1-13According to some embodiments of the present invention, a mounting groove 113 is formed on the inner wall of the wrench portion 11. The end face of the wrench portion 11 located on the second side is the wrench end face 112. The mounting groove 113 passes through the wrench end face 112, and the colored marking member 3 is accommodated in the mounting groove 113. By forming the mounting groove 113 on the inner wall of the wrench portion 11 and accommodating the colored marking member 3 in the mounting groove 113, the structural layout of the colored marking member 3 and the wrench portion 11 is reasonable and compact, and the colored marking member 3 is prevented from interfering with the fastener 200 and the wrench portion 11. By having the mounting groove 113 pass through the wrench end face 112, the second marking surface 32 is facilitated to contact the workpiece surface, so that the second marking surface 32 can mark the workpiece surface with color.

[0059] refer to Figure 6-Figure 9 According to some embodiments of the present invention, the marking assembly 2 includes a liquid supply member 4 for supplying marking liquid to the colored marking member 3. The liquid supply member 4 is disposed on a first side of the wrench portion 11 and has a storage chamber 41 for storing the marking liquid. The provision of the liquid supply member 4 allows for timely supply or replenishment of the marking liquid to the colored marking member 3, thereby facilitating the formation of an effective colored mark on the marking surface of the fastener 200. This also eliminates the need for manual replenishment of the marking liquid to the colored marking member 3, further improving production efficiency.

[0060] Optionally, the marking coloring liquid in the liquid supplying member 4 can supply the marking coloring liquid to the colored marking member 3 under the action of gravity. Optionally, a valve can be provided on the liquid supplying member 4 to supply the marking coloring liquid to the colored marking member 3 by opening and closing the valve.

[0061] Optionally, the liquid supply member 4 is detachably connected to the wrench body 1, for example, the liquid supply member 4 is plug-connected to the wrench body 1, so that the liquid supply member 4 and the wrench body 1 can be easily inspected, maintained and replaced. Optionally, the liquid supply member 4 and the wrench body 1 are integrally formed.

[0062] refer to Figure 6-Figure 9 According to some optional embodiments of the present invention, the liquid supply member 4 is integrally formed with the wrench portion 11. By integrally forming the liquid supply member 4 and the wrench portion 11, the connection operation between the liquid supply member 4 and the wrench portion 11 can be omitted, thereby improving the production efficiency of the torque wrench 100.

[0063] refer to Figures 9-12According to some embodiments of the present invention, the inner peripheral wall of the wrench part 11 is formed with a mounting groove 113, the end face of the wrench part 11 located on the second side is the wrench end face 112, the mounting groove 113 passes through the wrench end face 112, and the colored marking part 3 is movably accommodated in the mounting groove 113, and the marking assembly 2 also includes a limiting assembly 5, the limiting assembly 5 is located on the first side of the wrench part 11 and includes a support rod 51 and a limiting spring 52, and the end face of the wrench part 11 located on the first side is formed with a through hole 114, the support rod 51 extends along the first direction, one end of the support rod 51 is penetrated by the through hole 114 and is connected to the colored marking part 3, and the other end of the support rod 51 is provided with a limiting block 511, and the limiting spring 52 is sleeved on the outer peripheral side of the support rod 51 and the two ends of the limiting spring 52 respectively abut the limiting block 511 and the wrench part 11. By making the colored marking member 3 movable relative to the installation groove 113, the colored marking member 3 can be moved relative to the accommodating groove to a position suitable for contacting the workpiece surface so that the second marking surface 32 can color and mark the workpiece surface; by providing a limit assembly 5, the colored marking member 3 can be restored to its original installation position after being moved relative to the accommodating groove under the restoring action of the limit spring 52; in this way, during the process of the torque wrench 100 confirming the tightening of the fastener 200, the colored marking member 3 can automatically color and mark the workpiece surface and can automatically return from the marking position to the installation position, and no manual auxiliary operation is required.

[0064] For example, in the process of confirming the tightening of the fastener 200 by rotating the wrench part 11, after the tightening confirmation is completed and the wrench part 11 stops rotating, the colored marker 3 will move downward relative to the wrench part 11 in the installation groove 113 under the combined action of its own gravity and rotational inertia, so that the second marking surface 32 of the colored marker 3 contacts the surface of the workpiece that cooperates with the fastener 200 to perform color marking on the surface of the workpiece. During the movement of the colored marker 3, the limit spring 52 will be driven to undergo compression deformation; then, under the recovery action of the limit spring 52 of the limit assembly 5, the colored marker 3 returns to its original installation position.

[0065] refer to Figures 9-12 According to some optional embodiments of the present invention, the marking assembly 2 further includes a liquid supply member 4 for supplying marking liquid to the colored marking member 3. The liquid supply member 4 is disposed on a first side of the wrench portion 11 and has a storage cavity 41 for storing the marking liquid. The liquid supply member 4 is formed into a tubular shape extending along a first direction, and the limiting assembly 5 is installed in the storage cavity 41. By installing the limiting assembly 5 in the storage cavity 41, the limiting assembly 5 fully utilizes the space within the storage cavity 41, which helps optimize the spatial layout of the torque wrench 100.

[0066] refer to Figures 9-13According to some optional embodiments of the present invention, an opening 6 is formed on the end of the liquid supply component 4 away from the wrench portion 11. A stopper 511 blocks the opening 6. The stopper 511 is also formed with a filling port 7 that communicates with the storage chamber 41. The provision of the stopper 511 and its blocking of the opening 6 improve the sealing performance of the liquid supply component 4, preventing leakage of the marking liquid within the colored marker 3. The filling port 7 formed on the stopper 511, which communicates with the storage chamber 41, allows the marking liquid to be refilled into the liquid supply component 4 through the filling port 7, making the marking assembly 2 reusable.

[0067] Optionally, a guide member 53 is further provided at one end of the support rod 51 connected to the colored marking member 3. The guide member 53 is located in the through hole 114. The guide member 53 has a guide port. The marking coloring liquid in the storage cavity 41 can flow from the guide port to the colored marking member 3 through the guide member 53.

[0068] For example, in the process of confirming the tightening of the fastener 200 by rotating the wrench part 11, after the tightening confirmation is completed and the wrench part 11 stops rotating, the colored marking part 3 will move downward relative to the wrench part 11 in the installation groove 113 under the combined action of its own gravity and rotational inertia, so that the second marking surface 32 of the colored marking part 3 contacts the surface of the workpiece that cooperates with the fastener 200 to perform color marking on the workpiece surface. During the movement of the colored marking part 3, the limit assembly 5 will be driven to move in the storage chamber 41 of the liquid supply part 4, the limit spring 52 will be compressed and deformed, and the limit block 511 will move relative to the opening 6. Since the air pressure in the storage chamber 41 space remains unchanged, the air moving from the storage chamber 41 to the wrench part 11 will push the air in the wrench part 11 to move through the guide port to the liquid supply part 4, and the circulating air drives the marking coloring liquid in the storage chamber 41 to flow through the guide port toward the colored marking part 3.

[0069] refer to Figures 9-12 According to some optional embodiments of the present invention, the mounting groove 113 includes a first groove section 1131 and a second groove section 1132 arranged at an angle. The first groove section 1131 is formed on the inner circumferential wall of the wrench portion 11 and extends along a first direction. The first groove section 1131 penetrates the wrench end face 112. The cross-section of the first groove section 1131 is formed into a trapezoidal shape that increases in size from the radially inward direction of the wrench portion 11. By forming the first groove section 1131 into a trapezoidal shape that increases in size from the radially inward direction of the wrench portion 11, the colored marker 3 is more easily moved relative to the mounting groove 113 due to the inertia of the torque wrench 100 during rotation, thereby facilitating the second marking surface 32 to color and mark the workpiece surface.

[0070] Optionally, the first groove section 1131 and the second groove section 1132 are connected, and the second groove section 1132 is formed on the groove bottom of the receiving groove 111 of the wrench part 11;

[0071] Optionally, the colored marking part 3 is "L"-shaped and includes a first marking portion and a second marking portion, the first marking portion is accommodated in the first groove section 1131 and has a first marking surface 31 and a second marking surface 32, and the second marking portion is accommodated in the second groove section 1132 and has a third marking surface 33.

[0072] refer to Figures 1-14 According to some optional embodiments of the present invention, the wrench body 1 is a socket wrench, and the wrench portion 11 is the sleeve portion of the socket wrench. By making the wrench body 1 a socket wrench and the wrench portion 11 a sleeve portion of the socket wrench, the accuracy and efficiency of the torque wrench 100 are improved.

[0073] Optionally, the sleeve portion of the torque wrench 100 is polygonal, for example, hexagonal.

[0074] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation to the present invention.

[0075] In the description of the present invention, "first feature" and "second feature" may include one or more such features.

[0076] In the description of the present invention, “plurality” means two or more.

[0077] In the description of the present invention, a first feature being “above” or “below” a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact via another feature therebetween.

[0078] In the description of the present invention, a first feature “above”, “above” and “above” a second feature includes the first feature being directly above and obliquely above the second feature, or simply means that the first feature is horizontally higher than the second feature.

[0079] Throughout this specification, reference to terms such as "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with that embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the illustrative use of the above terms does not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0080] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and purpose of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A torque wrench, characterized in that: include: The wrench body includes a wrench portion, wherein the wrench portion is formed with a receiving groove for receiving the head of the fastener; A marking assembly is provided on the wrench body and includes a colored marking piece. The colored marking piece is provided on the wrench part and has a plurality of marking surfaces connected in sequence along a first direction. Two adjacent marking surfaces are arranged at an angle. The plurality of marking surfaces include adjacent first marking surfaces and second marking surfaces. The first marking surface is located on the inner circumference side of the wrench part. The wrench part has a first side and a second side arranged opposite to each other along the first direction. The second side of the wrench part is a side close to the workpiece mating with the fastener. The second marking surface is located on the second side of the wrench part. The first direction is the direction of the rotation axis of the wrench part.

2. The torque wrench according to claim 1, characterized in that The colored marking part has elastic deformation ability. In the direction toward the rotation axis close to the wrench part, the first marking surface protrudes from the inner circumferential surface of the wrench part. The end face of the wrench part located on the second side is the wrench end face. In the direction toward the second side close to the wrench part, the second marking surface protrudes from the wrench end face.

3. The torque wrench according to claim 1, wherein: The plurality of marking surfaces further includes a third marking surface connected to a side of the first marking surface away from the second marking surface along the first direction.

4. The torque wrench according to claim 1, wherein: An installation groove is formed on the inner wall of the wrench part, the end face of the wrench part located on the second side is a wrench end face, the installation groove passes through the wrench end face, and the colored marking piece is accommodated in the installation groove.

5. The torque wrench according to claim 1, characterized in that: The marking assembly includes a liquid supply component for supplying marking coloring liquid to the colored marking component. The liquid supply component is arranged on the first side of the wrench part and has a storage cavity. The storage cavity is used to store the marking coloring liquid.

6. The torque wrench according to claim 1, wherein: The inner peripheral wall of the wrench part is formed with a mounting groove, the end face of the wrench part located on the second side is the wrench end face, the mounting groove passes through the wrench end face, and the colored marking part is movably accommodated in the mounting groove, and the marking assembly also includes a limit assembly, which is located on the first side of the wrench part and includes a support rod and a limit spring, and the end face of the wrench part located on the first side is formed with a through hole, the support rod extends along the first direction, one end of the support rod is passed through the through hole and connected to the colored marking part, and the other end of the support rod is provided with a limit block, the limit spring is sleeved on the outer peripheral side of the support rod and the two ends of the limit spring respectively abut the limit block and the wrench part.

7. The torque wrench according to claim 6, characterized in that The marking assembly also includes a liquid supply part for supplying marking coloring liquid to the colored marking part. The liquid supply part is arranged on the first side of the wrench part and has a storage cavity. The storage cavity is used to store the marking coloring liquid. The liquid supply part is formed into a tubular shape extending along the first direction, and the limiting assembly is installed in the storage cavity.

8. The torque wrench according to claim 7, characterized in that An opening is formed at one end of the liquid supply component away from the wrench portion, the limiting block blocks the opening, and a filling port communicated with the storage cavity is formed on the limiting block.

9. The torque wrench according to claim 6, characterized in that: The mounting groove includes a first groove section and a second groove section arranged at an angle, the first groove section is formed on the inner peripheral wall of the wrench part and extends along the first direction, the first groove section passes through the wrench end face, and the cross-section of the first groove section is formed as a trapezoid that increases in the radial direction inward from the wrench part.

10. The torque wrench according to any one of claims 1 to 9, characterized in that: The wrench body is a socket wrench, and the wrench part is the socket part of the socket wrench.

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