Fastening tool and fastening tool set

Abstract

The utility model provides a fastening tool and a fastening tool set. The fastening tool comprises a handle and a working rod. The handle comprises a handle part and a limiting cover which covers the third end of the handle part, and a mounting groove is formed in the handle part in the length direction; the first end of the working rod is rotatably connected in the mounting groove, the second end of the working rod is provided with a connecting structure for mounting the bit, and the first end and the second end of the working rod are two opposite ends of the working rod; the working rod at least can rotate between a first position and a second position, and when the working rod is located at the first position, the working rod is roughly perpendicular to the length direction of the handle; when the working rod is in the second position, the working rod sinks into the mounting groove, the second end of the working rod is close to the third end of the handle part, and the limiting cover shields the second end of the working rod. The fastening tool is T-shaped or L-shaped during use, is convenient to operate, is of a linear structure during storage, and is convenient to store and carry.

Description

Technical Field

[0001] The embodiments of the present application relate to the technical field of fastening tools, and in particular, to a fastening tool and a fastening tool set. Background Art

[0002] Fastening tools are commonly used tools in the assembly industry. In the related art, the structures of fastening tools are diverse. However, most fastening tools are not small enough in structure, which is not convenient for storage, placement, and carrying. Utility Model Content

[0003] The embodiments of the present application provide a fastening tool and a fastening tool set to solve the technical problem that most fastening tools are not small enough in structure and are not convenient for storage, placement, and carrying.

[0004] The embodiments of the present application provide the following technical solutions to solve the above technical problems:

[0005] The embodiments of the present application provide a fastening tool, which includes a handle and a working rod;

[0006] The handle includes a handle portion and a limiting cover buckled on the third end of the handle portion. The handle portion is provided with an installation groove along the length direction;

[0007] The first end of the working rod is rotatably connected to the installation groove;

[0008] The working rod can at least rotate between a first position and a second position. When the working rod is in the first position, the working rod is substantially perpendicular to the length direction of the handle; when the working rod is in the second position, the working rod sinks into the installation groove, and the second end of the working rod is close to the third end of the handle portion. The limiting cover blocks the second end of the working rod. The first end and the second end of the working rod are opposite ends of the working rod.

[0009] Advantages of the embodiments of the present application: The fastening tool provided by the embodiments of the present application includes a handle and a working rod. When the fastening tool is in use, the working rod is in the first position, that is, the working rod is substantially perpendicular to the handle. At this time, the user can hold the handle to use the fastening tool to fasten fasteners (such as screws, bolts, etc.). When the fastening tool is in the storage state, the working rod is in the second position, that is, the working rod sinks into the installation groove, and the limiting cover is buckled on the third end of the handle portion. The limiting cover restricts the position of the working rod, so that the position of the working rod is limited in the installation groove. At this time, the fastening tool is in a straight bar shape structure, which is convenient for storage and carrying.

[0010] In a possible implementation manner, a connection structure for installing a bit is provided at the second end of the working rod.

[0011] In a possible implementation, a storage rack is provided at the third end of the handle. The storage rack is provided with a relief opening and at least one storage position configured to store and place the bit; the relief opening communicates with the installation groove. When the working rod is in the second position, the second end of the working rod is placed in the relief opening;

[0012] When the limit cover is buckled on the third end of the handle, the limit cover blocks at least part of the storage rack.

[0013] In a possible implementation, a first clamping structure is provided on the storage rack, and a second clamping structure is provided on the inner side surface of the limit cover. At least part of the second clamping structure cooperates with the first clamping structure to clamp the limit cover and the storage rack.

[0014] In a possible implementation, the storage rack is provided with a plurality of sliding grooves along the length direction of the handle. At least part of the sliding grooves are provided with first clamping protrusions on the side close to the handle, and the first clamping protrusions form the first clamping structure; the side wall at the end of the sliding groove away from the handle is a limit retaining wall;

[0015] The inner side surface of the limit cover is provided with second clamping protrusions corresponding to the sliding grooves, and the second clamping protrusions form the second clamping structure;

[0016] The second clamping protrusion can slide in the corresponding sliding groove. When the second clamping protrusion slides in the direction close to the handle and slides past the first clamping protrusion in the sliding groove with the first clamping protrusion, the limit cover is buckled on the third end of the handle; when the second clamping protrusion slides to the limit retaining wall, the limit retaining wall blocks the second clamping protrusion from continuing to slide.

[0017] In a possible implementation, the limit cover has a structure with openings at both ends, and the limit cover is slidably sleeved on the storage rack;

[0018] A hanging rope loop is provided at the end of the storage rack away from the handle. When the limit cover is buckled on the third end of the handle, the hanging rope loop exposes the limit cover.

[0019] In a possible implementation, there are a plurality of storage positions, and the plurality of storage positions are spaced apart in the circumferential direction around the length direction of the handle, and the length direction of the bits stored in each storage position is the same as the length direction of the handle;

[0020] When the limit cover slides to the limit retaining wall to block the second clamping protrusion, the limit cover does not cover the bit installed in the storage position.

[0021] In a possible implementation, the handle has a receiving cavity;

[0022] The fastening tool further comprises a torque detection structure, which is disposed in the accommodating cavity and is linked to the working rod;

[0023] The handle is provided with a display window, and the display window displays the torque value detected by the torque detection structure.

[0024] In a possible implementation, a limited position seat and a dial are provided in the accommodating cavity, and a scale and a value for marking the torque value are provided on the dial, and the dial is correspondingly provided at the display window and displayed through the display window;

[0025] The torque detection structure includes a torsion seat, a torque detection spring and a pointer. Part of the torsion seat extends out of the accommodating cavity and extends into the mounting groove. The torsion seat portion extending into the mounting groove is rotatably connected to the first end of the working rod. When the working rod is located at the first position, the working rod and the torsion seat can rotate around the length direction of the working rod; one end of the torque detection spring is installed on the torsion seat, and the other end is installed on the limit seat. The torque detection spring limits the rotation of the torsion seat around the length direction of the working rod, and the torque detection spring detects the torque of the working rod; one end of the pointer is connected to the torsion seat, and the other end extends to the dial to indicate the torque value detected by the torque detection spring.

[0026] In a possible implementation manner, the handle is provided with at least one through-hole, and the through-hole passes through the accommodating cavity and the outer side surface of the handle;

[0027] The torque detection structure further includes a zero adjustment knob, which is sleeved on the torsion seat and connected to the torsion seat in a damping manner; a portion of the zero adjustment knob at least extends into the through-hole, and the zero adjustment knob exposed to the through-hole is configured for a user to operate and rotate the zero adjustment knob to adjust the pointer to zero;

[0028] The end of the pointer facing away from the scale plate is connected to the zero adjustment knob.

[0029] In a possible implementation manner, a mounting seat is provided in the accommodating cavity;

[0030] The end of the torsion seat which is away from the end connected with the working rod is placed in the mounting seat, and the mounting seat limits the radial position of the torsion seat.

[0031] An embodiment of the present application further provides a fastening tool kit, which includes the fastening tool described in any of the above schemes and at least one bit, and each bit is installed in a storage position of the fastening tool.

[0032] The beneficial effects of the fastening tool set provided by the embodiments of the present application are the same as those of the above-mentioned fastening tool, and will not be elaborated here.

[0033] In addition to the technical problems solved by the present application, the technical features constituting the technical solutions, and the beneficial effects brought by these technical features of the technical solutions described above, other technical problems that can be solved by the fastening tool and the fastening tool set provided by the present application, other technical features included in the technical solutions, and the beneficial effects brought by these technical features will be further described in detail in the specific embodiments. Description of the Drawings

[0034] The drawings here are incorporated into the specification and form a part of the specification, showing embodiments consistent with the present application, and are used together with the specification to explain the principles of the present application.

[0035] Figure 1 Schematic diagram when the working rod of the fastening tool in the embodiment of the present application is in the first position;

[0036] Figure 2 Schematic diagram when the working rod of the fastening tool in the embodiment of the present application is in the second position;

[0037] Figure 3 Schematic diagram when the working rod of the fastening tool in the embodiment of the present application is in the second position and the limit cover is in the buckled state;

[0038] Figure 4 Schematic diagram of the fastening tool in the embodiment of the present application with the limit cover removed;

[0039] Figure 5 Schematic diagram of the limit cover;

[0040] Figure 6 Schematic diagram of the limit cover being opened;

[0041] Figure 7 Internal schematic diagram of the handle in the embodiment of the present application.

[0042] Explanation of the reference numerals in the drawings:

[0043] 100. Handle;

[0044] 110. Handle part; 120. Limit cover;

[0045] 111. Installation groove; 112. Third end; 113. Accommodation cavity; 114. Display window; 115. Through hole;

[0046] 1131. Limit seat; 1132. Dial;

[0047] 121. First clamping structure;

[0048] 200, Working rod;

[0049] 210, Connection structure;

[0050] 300, Bit;

[0051] 400, Storage rack;

[0052] 410, Storage position; 420, Relief opening; 430, Slide groove; 440, Second clamping structure; 450, Limit retaining wall; 460, Hanging rope loop;

[0053] 500, Torque detection structure;

[0054] 510, Torsion seat; 520, Torque detection spring piece; 530, Pointer; 540, Zero adjustment knob.

[0055] Through the above-mentioned drawings, specific embodiments of the present application have been shown, and there will be more detailed descriptions hereinafter. These drawings and textual descriptions are not intended to limit the scope of the concept of the present application in any way, but to illustrate the concept of the present application to those skilled in the art by referring to specific embodiments. Detailed implementation manners

[0056] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the scope of protection of the present application.

[0057] As Figure 1 、 Figure 2 and Figure 3 shown, the fastening tool provided in this embodiment includes a handle 100 and a working rod 200. Among them, the handle 100 includes a handle portion 110 and a limit cover 120 that buckles on the third end 112 of the handle portion 110. The handle portion 110 is provided with an installation groove 111 along the length direction.

[0058] It should be noted that in the embodiments of the present application, the limit cover 120 buckles on the third end 112 of the handle portion 110. The third end 112 refers to one end of the handle portion 110 in the length direction. The third end 112 includes a section near the end, including the areas on both sides of the end. For example, the limit cover 120 can buckle on the handle portion 110, or can buckle on the storage rack 400 located on one side of the third end 112 described below. As long as it buckles on the area near the end of the third end 112 and forms a handle 100 for the user to hold with the handle portion 110.

[0059] In this embodiment, the first end of the working rod 200 is rotatably connected to the installation groove 111. The second end of the working rod 200 is provided with a connection structure 210 for installing the bit 300. The first end and the second end of the working rod 200 are opposite ends of the working rod 200. The working rod 200 can at least rotate between a first position and a second position. When the working rod 200 is in the first position, the working rod 200 is substantially perpendicular to the length direction of the handle 100. At this time, the user can hold the handle 100 to use the fastening tool to fasten fasteners such as screws and bolts. When the working rod 200 is in the second position, the working rod 200 sinks into the installation groove 111, and the second end of the working rod 200 is close to the third end 112 of the handle portion 110, and the limiting cover 120 shields the second end of the working rod 200. That is to say, when the working rod 200 is in the second position and the limiting cover 120 is buckled on the third end 112 of the handle portion 110, the limiting cover 120 restricts the position of the working rod 200, so that the position of the working rod 200 is limited within the installation groove 111. At this time, the fastening tool is in a straight shape structure, which is convenient for storage and carrying. When using the fastening tool, open the limiting cover 120, and the limiting cover 120 no longer shields the second end of the working rod 200, that is, no longer restricts the position of the working rod 200. The limiting rod can rotate from the second position to the first position, that is, from the storage state to the use state. That is to say, when using the fastening tool, open the limiting cover 120 so that the working rod 200 rotates from the second position to the first position. When the working rod 200 rotates to the first position, the user can buckle the limiting cover 120 back onto the handle portion 110 to form the handle 100, which is convenient for the user to operate. After use, the working rod 200 rotates from the first position to the second position, and the limiting cover 120 is buckled to restrict the position of the working rod 200. If the limiting cover 120 is buckled on the handle portion 110, first open the limiting cover 120, then rotate the working rod 200 to the second position, and then buckle the limiting cover 120.

[0060] The fastening tool provided by the embodiment of the present application is in a T-shaped structure or an L-shaped structure when in use, which is convenient for the user to hold and apply force, and is in a straight shape structure when in storage, which is convenient for the user to store and carry.

[0061] It should be noted that substantially perpendicular means that the length direction of the working rod 200 and the handle 100 is in a perpendicular state under ideal conditions, but it is sufficient that the length directions of the working rod 200 and the handle 100 are close to perpendicular. Exemplarily, the angle between the length directions of the working rod 200 and the handle 100 is 89° or 91°, etc.

[0062] In addition, the working rod 200 can at least rotate between the first position and the second position, which means that the working rod 200 can rotate to other positions in addition to the first position and the second position, and is not specifically limited here. Exemplarily, the mounting groove 111 extends to both ends of the handle 110 in the length direction, and the first end of the working rod 200 is rotatably connected to the middle of the mounting groove 111. At this time, the working rod 200 can rotate from the first position to the second position, and can also rotate from the first position to the end of the handle 110 away from the third end. At this time, a limit cover can also be provided at the end of the handle 110 away from the third end 112 to limit the position of the working rod 200 when it rotates to the end of the handle 110 away from the third end 112. Of course, the mounting groove 111 can only extend to the third end 112 of the handle 110, that is, the working rod 200 can only rotate between the first position and the second position.

[0063] In some embodiments of the present application, Figure 2 and Figure 4 As shown, the third end 112 of the handle 110 is provided with a storage rack 400, and the storage rack 400 is provided with a clearance opening 420 and at least one storage position 410, and the storage position 410 is configured to store and place the bit 300. The clearance opening 420 is connected with the installation groove 111, and when the working rod 200 is in the second position, the second end of the working rod 200 is placed in the clearance opening 420. When the limit cover 120 is buckled on the third end 112 of the handle 110, the limit cover 120 blocks at least part of the storage rack 400. The setting of the storage rack 400 enables the fastening tool to store part of the bit 300, which is convenient for the user to use. When the user is in use, the bit 300 can be removed from the storage rack 400 and installed on the connecting structure 210 of the working rod 200. This setting makes it unnecessary for the user to find an additional place to store the bit 300, which increases the convenience of the user in using the tool.

[0064] For example, Figure 3 and Figure 4 As shown, the limit cover 120 is a structure with two ends open, and the limit cover 120 can be slidably mounted on the storage rack 400. The end of the storage rack 400 away from the handle 110 is provided with a hanging rope ring 460. When the limit cover 120 is buckled on the third end 112 of the handle 110, the hanging rope ring 460 is exposed from the limit cover 120. This arrangement allows the user to hang the fastening tool or hang it on the waist.

[0065] In some embodiments of the present application, Figure 4 , Figure 5 and Figure 6 As shown, a first clamping structure 121 is provided on the storage rack 400 , and a second clamping structure 440 is provided on the inner side of the limiting cover 120 , and at least part of the second clamping structure 440 cooperates with the first clamping structure 121 to clamp the limiting cover 120 and the storage rack 400 .

[0066] For example, Figure 2 , Figure 4 , Figure 5 and Figure 6 As shown, the storage rack 400 is provided with a plurality of slide grooves 430 along the length direction of the handle 100, at least part of the slide grooves 430 is provided with a first clamping protrusion on the side close to the handle 110, each first clamping protrusion forms a first clamping structure 121, and the side wall of the slide groove 430 at one end away from the handle 110 is a limit stop wall 450. The inner side surface of the limit cover 120 is provided with a second clamping protrusion corresponding to each slide groove 430, and each second clamping protrusion forms a second clamping structure 440. The second clamping protrusion can slide in the corresponding slide groove 430, and the second clamping protrusion slides in the direction close to the handle 110, and in the slide groove 430 with the first clamping protrusion, when the second clamping protrusion slides over the first clamping protrusion, the limit cover 120 buckles and covers the third end 112 of the handle 110. When the second clamping protrusion slides to the limit stop wall 450, the limit stop wall 450 prevents the second clamping protrusion from continuing to slide. That is to say, the slide groove 430 guides the limit cover 120 on the one hand so that the limit cover 120 can slide back and forth in the length direction of the slide groove 430, and on the other hand limits the position of the limit cover 120 so that the limit cover 120 can only slide along the length direction of the slide groove 430, and the limit stop wall 450 limits the limit cover 120 from sliding out of the storage rack 400. This setting can prevent the limit cover 120 from being lost or spending a lot of time to find due to misplacement after being removed.

[0067] In this embodiment, there are multiple storage positions 410, and the multiple storage positions 410 are arranged at intervals in the length direction of the handle 100, and the length direction of the screw bits 300 stored in each storage position 410 is the same as the length direction of the handle 100. When the limit cover 120 slides to the limit stop wall 450 to block the second clamping protrusion, the limit cover 120 does not cover the screw bits 300 installed in the storage position 410. The provision of multiple storage positions 410 enables the fastening tool to store more screw bits 300, so that the fastening tool can fasten more types of bolts and screws, has a wider range of applications, and is convenient for users to use. When the limit cover 120 slides to the limit stop wall 450 to block the second clamping protrusion, the limit cover 120 does not cover the screw bits 300 installed in the storage position 410, which is convenient for users to take and put the screw bits 300.

[0068] Exemplarily, a magnetic attraction component is provided in the storage rack 400 corresponding to each storage position 410 , and the magnetic attraction component is used to attract the bit 300 .

[0069] like Figure 6 and Figure 7As shown, the fastening tool provided by the embodiment of the present application may also be a torque wrench, that is, it can detect torque, which is convenient for the user to operate fasteners with torque requirements. Exemplarily, the handle 110 has a receiving cavity 113. The fastening tool further includes a torque detection structure 500, which is disposed in the receiving cavity 113. The torque detection structure 500 is linked with the working rod 200. A display window 114 is provided on the handle 110, and the display window 114 displays the torque value detected by the torque detection structure 500.

[0070] Please continue to refer to Figure 6 and Figure 7 , exemplarily, a limiting seat 1131 and a scale disk 1132 are disposed in the receiving cavity 113. The scale disk 1132 is provided with scales and numerical values for marking torque values. The scale disk 1132 is correspondingly disposed at the display window 114 and is displayed through the display window 114. The torque detection structure 500 includes a torsion seat 510, a torque detection elastic piece 520, and a pointer 530. A part of the torsion seat 510 extends out of the receiving cavity 113 and extends into the mounting groove 111. The part of the torsion seat 510 extending into the mounting groove 111 is rotatably connected to the first end of the working rod 200. When the working rod 200 is in the first position, the working rod 200 and the torsion seat 510 can rotate around the length direction of the working rod 200; one end of the torque detection elastic piece 520 is mounted on the torsion seat 510, and the other end is mounted on the limiting seat 1131. The torque detection elastic piece 520 restricts the torsion seat 510 from rotating around the length direction of the working rod 200. The torque detection elastic piece 520 detects the torque of the working rod 200. One end of the pointer 530 is connected to the torsion seat 510, and the other end extends to the scale disk 1132 to indicate the torque value detected by the torque detection elastic piece 520. That is to say, when fastening a bolt or a nut, the working rod 200 is subjected to a reaction force and has a tendency to rotate around the length direction of the working rod 200. The working rod 200 transmits this reaction force to the torsion seat 510, and then to the torque detection elastic piece 520. The torque detection elastic piece 520 blocks the rotation of the torsion seat 510 and will generate deformation at the same time. The deformation generated by the torque detection elastic piece 520 will cause the pointer 530 to rotate slightly on the scale disk 1132, so as to indicate the torque when the fastening tool fastens the fastener.

[0071] In some embodiments of the present application, such as Figure 6 and 7As shown, in order to improve the accuracy of torque detection of the fastening tool, the handle 110 is provided with at least one through hole 115 that penetrates the accommodation cavity 113 and the outer side surface of the handle 110. The torque detection structure 500 further includes a zero adjustment knob 540. The zero adjustment knob 540 is sleeved on the torsion seat 510, and the zero adjustment knob 540 is damping-connected to the torsion seat 510. At least a part of the zero adjustment knob 540 extends into the through hole 115 at least. The zero adjustment knob 540 exposed at the through hole 115 is configured for the user to operate and rotate the zero adjustment knob 540 to zero the pointer 530. One end of the pointer 530 facing away from the scale 1132 is connected to the zero adjustment knob 540. That is to say, when the pointer 530 is not pointing at the zero position, the pointer 530 can be zeroed by rotating the zero adjustment knob 540.

[0072] It should be noted that the damping connection between the zero adjustment knob 540 and the torsion seat 510 means that the zero adjustment knob 540 can rotate around the torsion seat 510, but it is not a rotation without resistance. When no force is applied to the zero adjustment knob 540, the zero adjustment knob 540 can rotate with the torsion seat 510. When a circumferential rotation force around the torsion seat 510 is applied to the zero adjustment knob 540, the zero adjustment knob 540 can rotate around the torsion seat 510. That is to say, when the fastening tool is in use, the torsion seat 510 can drive the zero adjustment knob 540 to rotate, and then drive the pointer 530 to move. When the user rotates the zero adjustment knob 540 to zero, the zero adjustment knob 540 can rotate around the torsion seat 510 to achieve zero adjustment.

[0073] In some embodiments of the present application, a mounting seat is provided in the accommodation cavity 113. One end of the torsion seat 510 facing away from its connection with the working rod 200 is placed in the mounting seat, and the mounting seat restricts the position of the torsion seat 510 in the radial direction. That is to say, the setting of the mounting seat enables the torsion seat 510 to only rotate around the axis of the torsion seat 510, and this setting makes the rotation of the torsion seat 510 smoother.

[0074] The embodiment of the present application also provides a fastening tool set, which includes the fastening tool of any of the above solutions and at least one bit 300, and each bit 300 is installed in the storage position 410 of the fastening tool.

[0075] Those skilled in the art will readily conceive of other embodiments of the present application after considering the specification and practicing the invention disclosed herein. The present application is intended to cover any variations, uses, or adaptations of the present application, which follow the general principles of the present application and include known common knowledge or conventional technical means in the technical field not disclosed in the present application. The specification and embodiments are only regarded as exemplary, and the true scope and spirit of the present application are pointed out by the following claims.

[0076] It should be understood that the present application is not limited to the exact structures described above and shown in the drawings, and various modifications and changes can be made without departing from its scope. The scope of the present application is only limited by the appended claims.

Claims

1. A fastening tool, characterized in that: Including handle and working rod; The handle comprises a handle portion and a limit cover buckled on the third end of the handle portion, and the handle portion is provided with a mounting groove along the length direction; The first end of the working rod is rotatably connected to the mounting groove; The working rod is capable of rotating between at least a first position and a second position. When the working rod is in the first position, the working rod is approximately perpendicular to the length direction of the handle. When the working rod is in the second position, the working rod is sunk into the mounting groove, and the second end of the working rod is close to the third end of the handle. The limit cover covers the second end of the working rod. The second end and the first end of the working rod are opposite ends of the working rod.

2. The fastening tool according to claim 1, characterized in that: The second end of the working rod is provided with a connecting structure for mounting a bit.

3. The fastening tool according to claim 2, characterized in that: The third end of the handle is provided with a storage rack, the storage rack is provided with a clearance opening and at least one storage position, the storage position is configured to store and place a batch head; the clearance opening is connected with the installation groove, and when the working rod is in the second position, the second end of the working rod is placed in the clearance opening; When the limiting cover is buckled onto the third end of the handle, the limiting cover covers at least a portion of the storage rack.

4. The fastening tool according to claim 3, characterized in that: The storage rack is provided with a first clamping structure, and the inner side surface of the limiting cover is provided with a second clamping structure, and at least a part of the second clamping structure cooperates with the first clamping structure to clamp the limiting cover and the storage rack.

5. The fastening tool according to claim 4, characterized in that: The storage rack is provided with a plurality of slide grooves along the length direction of the handle, at least some of the slide grooves are provided with a first clamping protrusion on a side close to the handle, and each of the first clamping protrusions forms a first clamping structure; the side wall of the slide groove at one end away from the handle is a limit stop wall; The inner side surface of the limiting cover is provided with a second clamping protrusion corresponding to each of the sliding grooves, and each of the second clamping protrusions forms the second clamping structure; The second clamping protrusion can slide in the corresponding sliding groove. When the second clamping protrusion slides in a direction close to the handle and in the sliding groove having the first clamping protrusion, the second clamping protrusion slides over the first clamping protrusion, the limiting cover buckles and covers the third end of the handle; When the second clamping protrusion slides to the limiting stop wall, the limiting stop wall blocks the second clamping protrusion from continuing to slide.

6. The fastening tool according to claim 5, characterized in that: The limit cover is a structure with openings at both ends, and the limit cover can be slidably sleeved on the storage rack; The end of the storage rack away from the handle is provided with a lanyard ring, and when the limiting cover is buckled on the third end of the handle, the lanyard ring is exposed from the limiting cover.

7. The fastening tool according to claim 5, characterized in that: There are a plurality of storage positions, and the plurality of storage positions are arranged at intervals in the length direction surrounding the handle, and the length direction of the screw bits stored in each storage position is the same as the length direction of the handle; When the limiting cover slides to the limiting stop wall to block the second locking protrusion, the limiting cover does not cover the screwdriver bit installed in the storage position.

8. The fastening tool according to any one of claims 1 to 7, characterized in that: The handle has a receiving cavity; The fastening tool further comprises a torque detection structure, which is disposed in the accommodating cavity and is linked to the working rod; The handle is provided with a display window, and the display window displays the torque value detected by the torque detection structure.

9. The fastening tool according to claim 8, characterized in that: A limited position seat and a dial are arranged in the accommodating cavity, and a scale and a value for marking the torque value are arranged on the dial. The dial is arranged correspondingly at the display window and displayed through the display window; The torque detection structure includes a torsion seat, a torque detection spring and a pointer. Part of the torsion seat extends out of the accommodating cavity and extends into the mounting groove. The torsion seat portion extending into the mounting groove is rotatably connected to the first end of the working rod. When the working rod is located at the first position, the working rod and the torsion seat can rotate around the length direction of the working rod; one end of the torque detection spring is installed on the torsion seat, and the other end is installed on the limit seat. The torque detection spring limits the rotation of the torsion seat around the length direction of the working rod, and the torque detection spring detects the torque of the working rod; one end of the pointer is connected to the torsion seat, and the other end extends to the dial to indicate the torque value detected by the torque detection spring.

10. The fastening tool according to claim 9, characterized in that The handle is provided with at least one through hole, and the through hole passes through the accommodating cavity and the outer side surface of the handle; The torque detection structure further includes a zero adjustment knob, which is sleeved on the torsion seat and connected to the torsion seat in a damping manner; a portion of the zero adjustment knob at least extends into the through-hole, and the zero adjustment knob exposed to the through-hole is configured for a user to operate and rotate the zero adjustment knob to adjust the pointer to zero; The end of the pointer facing away from the scale plate is connected to the zero adjustment knob.

11. A fastening tool kit, characterized in that: It comprises the fastening tool according to any one of claims 3 to 10 and at least one screwdriver bit, each screwdriver bit being installed in a storage position of the fastening tool.

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