Knife handle of screwdriver capable of being assembled and disassembled quickly

Abstract

The utility model belongs to the field of screwdriver tools, and discloses a handle of a screwdriver capable of being assembled and disassembled quickly, which comprises a handle, a mounting cylinder used for inserting a screwdriver rod is arranged on the handle, a sliding sleeve capable of sliding is sleeved on the mounting cylinder, and a first concave part, a transition part and a second concave part are sequentially arranged on the inner circumferential surface of the sliding sleeve. A limiting part located in the first concave part is arranged on the peripheral surface of the mounting cylinder, an elastic part is connected between the transition part and one side of the limiting part in an abutting mode, the other opposite side of the limiting part is connected to the inner side face of the first concave part in an abutting mode, a clamping part used for being arranged on the neck of the cutter bar in a clamped mode penetrates through the mounting cylinder, and the clamping part is in sliding fit with the mounting cylinder; when the sliding sleeve presses the elastic piece to deform to a set distance, the clamping piece is right opposite to the second concave part, rapid mounting and dismounting of the cutter bar and the handle are achieved, meanwhile, it is guaranteed that the cutter bar and the handle can synchronously rotate in the forward direction and the backward direction after being mounted, and high connecting strength is kept.

Description

Technical Field

[0001] This utility model relates to the field of screwdriver tools, and in particular to a screwdriver handle for quick mounting and dismounting. Background Technology

[0002] Bolted connections not only offer high connection strength but also convenient and quick installation and disassembly, making them a widely used physical connection method. Screwdrivers, as tools for twisting bolts, insert their tips into the bolt holes and rotate to install and remove bolts. To adapt to different application scenarios and needs, various types and specifications of bolts have been designed, and correspondingly, screwdriver tips have also developed in various styles to match different types and specifications of bolts. This has resulted in a wide variety of screwdriver tips. If a product has multiple different types of bolts installed, multiple matching screwdrivers are needed for installation or disassembly, requiring the storage and carrying of multiple screwdrivers. Since the diameter of a screwdriver handle is much larger than the diameter of the shaft, the handle occupies a significant amount of storage space and is not conducive to the neat arrangement of screwdrivers. Therefore, for ease of storage and carrying, screwdrivers typically adopt a detachable, modular structure rather than a one-piece structure. By combining individual handles with different shafts, screwdrivers can be adapted to different bolts, thus saving the handle space required for storing multiple screwdrivers and reducing the overall space occupied by the handles in the storage space. However, most modular screwdrivers on the market currently use a threaded connection, where the neck of the screwdriver shank is threaded to the handle, and the head of the shank is used to insert bolts. Although this connection method has good strength, the lack of a reverse locking function in conventional threaded connections means the handle can only rotate in the forward direction to move the shank. If the handle rotates in the reverse direction, the shank may separate from the handle, resulting in poor practicality. Furthermore, to enhance the connection strength between the shank and handle, a longer threaded connection is usually required, making installation and disassembly very inconvenient. Utility Model Content

[0003] The purpose of this invention is to provide a screwdriver handle for quick installation and removal, enabling rapid installation and removal of both the handle and the screwdriver barrel, while ensuring that both can rotate synchronously in both directions after installation and maintain a high connection strength.

[0004] The technical solution provided by this utility model is as follows: a screwdriver handle for quick installation and removal, including a handle, a mounting sleeve for inserting a screwdriver shank, a sliding sleeve on the mounting sleeve, a first recess, a transition portion and a second recess sequentially provided on the inner circumferential surface of the sliding sleeve, a limiting portion located in the first recess on the outer circumferential surface of the mounting sleeve, an elastic element abutting between the transition portion and one side of the limiting portion, and the opposite side of the limiting portion abutting against the inner side of the first recess, a locking member for locking onto the neck of the screwdriver shank through the mounting sleeve, the locking member slidingly engaging with the mounting sleeve, the transition portion abutting against the locking member to allow the locking member to be inserted into the mounting sleeve, and when the sliding sleeve compresses the elastic element to deform to a set distance, the locking member is aligned with the second recess.

[0005] In the aforementioned quick-release screwdriver handle, the locking element is a first ball bearing, and the outer diameter of the first ball bearing is greater than the thickness of the mounting cylinder.

[0006] In the aforementioned quick-release screwdriver handle, the mounting cylinder has a mounting hole, and the first ball is disposed in the mounting hole. The diameter of the end of the mounting hole facing away from the sliding sleeve is smaller than the outer diameter of the first ball.

[0007] In the aforementioned quick-release screwdriver handle, the first recess, the transition portion, and the second recess are arranged around the axis of the sliding sleeve, and at least two snap-fit ​​members are provided, which are arranged at intervals.

[0008] The limiting part is arranged around the axis of the mounting cylinder, and the elastic element is a first compression spring sleeved on the mounting cylinder. One end of the first compression spring abuts against the limiting part, and the other end abuts against the transition part.

[0009] In the aforementioned quick-release screwdriver handle, the sliding sleeve includes a first sleeve and a second sleeve that are slidable and sleeved on the mounting cylinder. The first recess is provided on the inner circumferential surface of the first sleeve, and the second recess is provided on the second sleeve. The first sleeve and the second sleeve are connected to form the transition portion.

[0010] In the aforementioned quick-release screwdriver handle, the mounting sleeve has a notch at the edge of the end furthest from the handle for inserting the screwdriver shank; the mounting sleeve is vertically positioned in the middle of the handle.

[0011] In the aforementioned quick-release screwdriver handle, the handle is a hollow structure, the mounting cylinder extends into the handle and rotates with the handle, the mounting cylinder is provided with a ratchet portion located inside the handle, the handle is fixed with a movable pawl and a second compression spring for pressing the pawl, the pawl abuts against the second compression spring and the ratchet portion respectively.

[0012] In the aforementioned quick-release screwdriver handle, the pawl includes a top member and a second ball bearing disposed on one side of the top member. The second ball bearing abuts against the ratchet portion. The top member slides into the inner side of the mounting cylinder and abuts against the second compression spring.

[0013] In the aforementioned quick-release screwdriver handle, the ratchet portion includes a plurality of recesses formed on the outer circumferential surface of the mounting cylinder. The plurality of recesses are spaced apart and are all located inside the mounting cylinder. The pawl abuts against any of the recesses.

[0014] In the aforementioned quick-release screwdriver handle, a port is provided at one end of the handle, and a second compression spring extends to the port. An end cap that can be inserted to different depths is provided inside the port. The end cap is connected to the port and abuts against the second compression spring.

[0015] The beneficial effects of this utility model after adopting the above technical solution are as follows:

[0016] This technical solution involves installing a mounting sleeve on the handle, which is then fitted onto the neck of the tool holder. This allows the tool holder to be radially fixed to the mounting sleeve via its neck. Simultaneously, an elastic element pushes a transition section on a sliding sleeve, aligning the transition section with and abutting against a locking element. The locking element, under the contact of the transition section, extends into the inner cavity of the mounting sleeve. A recess is provided on the neck of the tool holder; after the locking element extends into the inner cavity of the mounting sleeve, it is inserted into the recess. This ensures that the tool holder is fixed both axially and circumferentially to the mounting sleeve. When removing the tool holder from the mounting sleeve, pushing the sliding sleeve separates the transition section from the locking element. Pull the tool bar out along its axis until the second recess is aligned with the locking piece. Then, forcefully pull the tool bar out. Under pressure, the locking piece retracts into the second recess, and the tool bar smoothly disengages from the mounting sleeve, completing the quick disassembly of the tool bar. During this process, the elastic element is in a compressed state. After releasing the sliding sleeve, the elastic element pushes the transition through its own elasticity to drive the sliding sleeve back to its original position. When the tool bar needs to be reinstalled, push the sliding sleeve again and insert the tool bar. Push the locking piece open through the neck of the tool bar, then release the sliding sleeve to complete the quick installation. This achieves quick installation and disassembly of both the tool bar and the handle, while ensuring that both can rotate synchronously in both directions after installation and maintain a high connection strength. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the use of the handle of the quick-release screwdriver according to Embodiment 1 of this utility model;

[0018] Figure 2 This is a schematic diagram of the handle of the quick-release screwdriver according to Embodiment 1 of this utility model;

[0019] Figure 3 This is an assembly cross-sectional view of the handle of the quick-release screwdriver according to Embodiment 1 of this utility model;

[0020] Figure 4 This is a schematic diagram of the mounting cylinder of Embodiment 1 of this utility model.

[0021] Reference numerals: 1. Handle; 2. Sliding sleeve; 3. Tool holder; 4. Elastic element; 5. First ball bearing;

[0022] 11. End cap; 12. Mounting cylinder; 121. Limiting part; 122. Bayonet; 123. Mounting hole; 13. Ratchet part; 131. Recess; 14. Second ball bearing; 15. Top piece; 16. Guide post; 17. Second compression spring;

[0023] 21. First bushing; 22. Second bushing; 23. First recess; 24. Transition portion; 25. Second recess;

[0024] 31. Neck; 311. Concave position. Detailed Implementation

[0025] The technical solution of this utility model will be further described in detail below with reference to specific embodiments, but this does not constitute any limitation on this utility model.

[0026] Example 1:

[0027] like Figure 1-4 As shown, the handle of the quick-release screwdriver includes a handle 1. The handle 1 is provided with a mounting sleeve 12 for inserting the shank 33. A sliding sleeve 2 is fitted on the mounting sleeve 12. A first recess 23, a transition portion 24, and a second recess 25 are sequentially provided on the inner circumferential surface of the sliding sleeve 2. A limiting portion 121 located in the first recess 23 is provided on the outer circumferential surface of the mounting sleeve 12. An elastic member 4 abuts between the transition portion 24 and one side of the limiting portion 121. The opposite side of the limiting portion 121 abuts against the inner side of the first recess 23. A locking member for locking onto the neck 31 of the shank 33 passes through the mounting sleeve 12. The locking member slides with the mounting sleeve 12. The transition portion 24 abuts against the locking member so that the locking member is inserted into the mounting sleeve 12. When the sliding sleeve 2 compresses the elastic member 4 to deform to a set distance, the locking member is aligned with the second recess 25.

[0028] The specific working principle is as follows: An mounting sleeve 12 is installed on the handle 1, and this sleeve is fitted onto the neck 31 of the tool shank 33. This allows the tool shank 33 to be radially fixed to the mounting sleeve 12 via its neck 31. Simultaneously, the elastic element 4 pushes the transition portion 24 on the sliding sleeve 2, causing the transition portion 24 to face and abut against the locking element. Under the abutment of the transition portion 24, the locking element extends into the inner cavity of the mounting sleeve 12. A recess 311 is provided on the neck 31 of the tool shank 33. After the locking element extends into the inner cavity of the mounting sleeve 12, it is inserted into the recess 311, ensuring that the tool shank 33 is fixed both axially and circumferentially to the mounting sleeve 12. When the tool shank 33 needs to be removed from the mounting sleeve 12, the sliding sleeve 2 is pushed... The transition part 24 separates from the locking member until the second recess 25 is directly opposite the locking member. Then, the tool bar 33 is pulled out along the axial direction of the tool bar 33. Under pressure, the locking member retracts into the second recess 25, and the tool bar 33 is also successfully disengaged from the mounting sleeve 12, completing the quick disassembly of the tool bar 33. During this process, the elastic member 4 is in a compressed state. After the sliding sleeve 2 is released, the elastic member 4 pushes the transition part to drive the sliding sleeve 2 to reset through its own elasticity. When the tool bar 33 needs to be installed again, the sliding sleeve 2 is pushed again and inserted into the tool bar 33. After the locking member is pushed open by the neck 31 of the tool bar 33, the sliding sleeve 2 is released, completing the quick installation. This realizes the quick installation and disassembly of both the tool bar 33 and the handle 1, while ensuring that both can achieve synchronous rotation in both directions after installation and maintain a high connection strength.

[0029] like Figure 4 As shown, the specific structure of the snap-fit ​​component is as follows: the snap-fit ​​component is a first ball bearing 5, and the outer diameter of the first ball bearing 5 is greater than the thickness of the mounting cylinder 12.

[0030] By selecting the first ball bearing 5, the snap-fit ​​component can not only slide with the mounting cylinder 12, but also rub and roll on the transition part 24 and the recess 311 of the neck 31 of the tool holder 33, so as to avoid rigid friction with the transition part 24 and the recess 311 of the neck 31 of the tool holder 33 and extend the service life of the snap-fit ​​component.

[0031] The specific assembly structure of the mounting cylinder 12 and the first ball 5 is as follows: the mounting cylinder 12 is provided with a mounting hole 123, the first ball 5 is disposed in the mounting hole 123, and the diameter of the end of the mounting hole 123 away from the sliding sleeve 2 is smaller than the outer diameter of the first ball 5.

[0032] The diameter of the mounting hole 123 at the end opposite to the sliding sleeve 2 is designed so that the first ball 5 can extend into the inner cavity of the mounting cylinder 12 through the mounting hole 123, while also preventing the transition part 24 from completely pushing the first ball 5 out of the mounting hole 123, thus preventing the first ball 5 from falling out of the mounting hole 123 and thus preventing the first ball 5 from falling out of the inner cavity of the mounting cylinder 12. The diameter of the end of the mounting hole 123 adjacent to the sliding sleeve 2 is not less than the outer diameter of the first ball 5. Preferably, the diameter of this end is equal to the outer diameter of the first ball 5. This allows the first ball 5 to be quickly installed into the mounting hole 123 and also guides the first ball 5 to move telescopically through the inner surface of the mounting hole 123.

[0033] In some embodiments, the snap-fit ​​component can also be a rod instead of the first ball bearing 5. This embodiment does not impose too many restrictions on this. When the snap-fit ​​component is a rod, correspondingly, in order to prevent the transition portion 24 from completely pushing the snap-fit ​​component in the mounting hole 123 into the inner cavity of the mounting cylinder 12, an end cap is provided on one end of the snap-fit ​​component adjacent to the sliding sleeve 2. The outer diameter of the end cap is larger than the diameter of the mounting hole 123 and is located between the transition portion 24 and the outer peripheral surface of the mounting cylinder 12. When the transition portion 24 abuts against the end cap, the transition portion 24 presses the end cap to fit against the outer peripheral surface of the mounting cylinder 12. At this time, the snap-fit ​​component extends into the inner cavity of the mounting cylinder 12. Conversely, when the tool bar 33 is disassembled, the neck 31 of the tool bar 33 pushes the snap-fit ​​component backward, and the snap-fit ​​component drives the end cap to move to the second recess 25. The end cap is preferably a spherical structure to reduce the contact area with the transition portion 24, thereby reducing frictional resistance.

[0034] like Figure 3 As shown, preferably, the first recess 23, the transition portion 24 and the second recess 25 are arranged around the axis of the sliding sleeve 2, and at least two snap-fit ​​members are provided, which are arranged at intervals.

[0035] The first recess 23 and the second recess 25 are arranged around each other, forming two annular grooves. The transition portion 24 is arranged around each other, forming an annular protrusion located between the two annular grooves. The annular protrusion is a relative protrusion structure based on the first recess 23 and the second recess 25. That is, the first recess 23, the transition portion 24 and the second recess 25 are all annular structures. This means that when the mounting cylinder 12 is assembled with the sliding sleeve 2, the sliding sleeve 2 does not need to be positioned with the mounting cylinder 12 in the circumferential direction. Compared with the snap-fit ​​parts, this improves the accuracy of the snap-fit ​​parts in aligning with the transition portion 24 or the second recess 25 in the circumferential direction of the sliding sleeve 2, and eliminates the assembly problems caused by the low assembly tolerance of the sliding sleeve 2 in the circumferential direction. The number of snap-fit ​​parts allows the mounting cylinder 12 to connect and position the neck 31 of the tool bar 33 at more than two points in the circumferential direction, so that the neck 31 of the tool bar 33 is balanced in the circumferential direction, and ensures that the tool bar 33 is still coaxially arranged with the mounting cylinder 12 under force.

[0036] In some embodiments, the first recess 23 and the second recess 25 may also be recesses, platforms and cavities that are spaced apart around the axis of the sliding sleeve 2. Correspondingly, the transition portion 24 is a number of protrusions that are spaced apart around the axis of the sliding sleeve 2. The number of protrusions corresponds one-to-one with the number of recesses. The protrusions are located in the corresponding recesses. The number of protrusions and recesses may be the same or different. This embodiment does not impose too much restriction on this. At this time, the elastic element 4 may be one or more. One elastic element 4 corresponds to one recess and one protrusion. The elastic element 4 abuts against the corresponding recess and protrusion.

[0037] Preferably, the limiting part 121 is arranged around the axis of the mounting cylinder 12, and the elastic element 4 is a first compression spring sleeved on the mounting cylinder 12, with one end of the first compression spring abutting against the limiting part 121 and the other end abutting against the transition part 24.

[0038] The limiting part 121 is arranged around the periphery, forming an annular protrusion on the outer circumferential surface of the mounting cylinder 12. This increases the contact area between the limiting part 121 and the inner side of the first recess 23 and the end of the elastic member 4, thereby enhancing the contact strength and stability between the sliding sleeve 2 and the limiting part. The elastic member 4 is a first compression spring, which is sleeved on the mounting cylinder 12. Under the guidance and limitation of the mounting cylinder 12, the first compression spring can apply force evenly in all circumferential directions of both the sliding sleeve 2 and the mounting cylinder 12, so that the sliding sleeve 2 slides smoothly on the mounting cylinder 12, while improving the movement accuracy of the sliding sleeve 2.

[0039] Combination Figure 1 and Figure 2 As shown, the specific structure of the sliding sleeve 2 is as follows: the sliding sleeve 2 includes a first bushing 21 and a second bushing 22 that are slidable and sleeved on the mounting cylinder 12. A first recess 23 is provided on the inner circumferential surface of the first bushing 21, and a second recess 25 is provided on the second bushing 22. The first bushing 21 and the second bushing 22 are connected to form a transition portion 24.

[0040] The first bushing 21 and the second bushing 22 are the two main parts of the sliding sleeve 2. By assembling the first bushing 21 and the second bushing 22, the sliding sleeve 2 is formed, which reduces the assembly difficulty and precision requirements of the elastic element 4 and the limiting part with the first recess 23.

[0041] like Figure 4 As shown, in a further improvement, a slot 122 for inserting the tool bar 33 is provided at the edge of the end of the mounting cylinder 12 away from the handle 1; the mounting cylinder 12 is vertically disposed in the middle of the handle 1.

[0042] In practical applications, the recess 311 on the neck 31 of the tool holder 33 can be a pit, a groove, or a cavity. This embodiment does not impose too many restrictions on this. When the recess 311 is a pit, the snap-fit ​​is inserted into the pit, and the tool holder 33 can be fixed relative to the mounting cylinder 12 in its axial direction and also in its circumferential direction. When the recess 311 is a groove, especially an annular groove structure, after the snap-fit ​​is inserted into the groove, the tool holder 33 can only be fixed relative to the mounting cylinder 12 in its axial direction. Therefore, by providing a slot 122 on the edge of the mounting cylinder 12, the neck 31 of the tool holder 33 is inserted into the slot 122, thereby positioning the tool holder 33 in its circumferential direction and preventing the mounting cylinder 12 and the sliding sleeve 2 from rotating relative to each other and slipping.

[0043] The mounting cylinder 12 and the handle 1 are in a T-shape, which increases the grip area and rotational torque, reduces the torsional force and improves the comfort of the torsional feel.

[0044] like Figure 3 As shown, in another improvement of this embodiment, the handle 1 is a hollow structure, the mounting cylinder 12 extends into the handle 1 and rotates with the handle 1, the mounting cylinder 12 is provided with a ratchet part 13 located inside the handle 1, the handle 1 is fixed with a movable pawl and a second compression spring 17 for pressing the pawl, the pawl abuts against the second compression spring 17 and the ratchet part 13 respectively.

[0045] The ratchet part 13 and the pawl are designed to form a ratchet structure between the mounting cylinder 12 and the handle 1. The mounting cylinder 12 is intermittently twisted on the handle 1 through the ratchet mechanism. The mounting cylinder 12 and the handle 1 together form a torque wrench. The user can accurately control the rotation angle and force of the tool holder 33 through the working mechanism of the ratchet structure to avoid the bolt being installed too tight or too loose.

[0046] The working length of the second compression spring 17 is a preset value, so the maximum reaction force it can provide is also a fixed value, thus ensuring that the torque of the handle 1 driving the mounting cylinder 12 to rotate one revolution is constant. In specific operation, the torque transmitted to the bolt by the synchronous rotation of the tool bar 3 under the drive of the mounting cylinder 12 is also constant.

[0047] The specific structure of the pawl is as follows: the pawl includes a top member 15 and a second ball 14 disposed on one side of the top member 15. The second ball 14 abuts against the ratchet portion 13. The top member 15 slides in cooperation with the inner side of the mounting cylinder 12 and abuts against the second compression spring 17.

[0048] The top member 15 is specifically a rod. A blind hole is provided on the end face of the first end of the top member 15, and the second ball 14 is disposed in the blind hole. A guide post 16 is provided on the end face of the second end of the top member 15. The guide post 16 is inserted into the inner ring of the second compression spring 17. The first end and the second end of the top member 15 are respectively set as the opposite ends of the top rod.

[0049] In actual use, the guide post 16 and the end of the second compression spring 17 away from the top member 15 are spaced apart.

[0050] Preferably, the second ball 14 is in rotational engagement with the blind hole.

[0051] In practical applications, one end of the second compression spring 17 abuts against the end of one end of the handle 1, and the other end of the second compression spring 17 abuts against the second end of the top member 15.

[0052] In another preferred embodiment, a port is provided on one end of the handle 1, and a second compression spring 17 extends to the port. An end cap 11 that can be inserted to different depths is inserted into the port. The end cap 11 is connected to the port and abuts against the second compression spring 17. The compression amount of the second compression spring 17 changes with the insertion depth of the end cap 11. By changing the compression amount of the second compression spring 17, the elastic force applied by the second compression spring 17 to the top member 15 in this state is indirectly adjusted, thereby adjusting the torque generated by the ratchet mechanism so that the engagement between the handle 1 and the mounting cylinder 12 has the practical effect of adjustable torque. The torque adjustment range is 3Nm-25Nm.

[0053] In actual installation, when the end cap 11 is inserted into the port to the required depth, a connector such as a pin or self-tapping screw is driven into the handle to connect the connector to the end cap 11, thereby fixing the end cap 11 in the port.

[0054] The specific structure of the ratchet part 13 is as follows: the ratchet part 13 includes a plurality of recesses 131 formed on the outer peripheral surface of the mounting cylinder 12. The plurality of recesses 131 are arranged at intervals and are all located inside the mounting cylinder 12. The pawl abuts against any of the recesses 131.

[0055] In addition, the ratchet part 13 can also be a number of teeth arranged sequentially around the axis of the mounting cylinder 12. This embodiment does not impose too many restrictions on the ratchet part 13.

[0056] The above embodiments are preferred embodiments of the present utility model, but the embodiments of the present utility model are not limited to the above embodiments. Any changes, modifications, substitutions, combinations, or simplifications made without departing from the spirit and principle of the present utility model shall be considered equivalent substitutions and shall be included within the protection scope of the present utility model.

Claims

1. A screwdriver handle for quick attachment and removal, comprising a handle, wherein the handle is provided with a mounting sleeve for inserting a screwdriver shank, characterized in that, The mounting cylinder is fitted with a sliding sleeve. The inner circumferential surface of the sliding sleeve is provided with a first recess, a transition portion, and a second recess in sequence. The outer circumferential surface of the mounting cylinder is provided with a limiting portion located in the first recess. An elastic member abuts between the transition portion and one side of the limiting portion. The opposite side of the limiting portion abuts against the inner side of the first recess. A snap-fit ​​member for locking onto the neck of the tool holder passes through the mounting cylinder. The snap-fit ​​member slides with the mounting cylinder. The transition portion abuts against the snap-fit ​​member so that the snap-fit ​​member is inserted into the mounting cylinder. When the sliding sleeve compresses the elastic member to deform to a set distance, the snap-fit ​​member is directly opposite the second recess.

2. The handle of the quick-release screwdriver according to claim 1, characterized in that, The snap-fit ​​component is a first ball bearing, and the outer diameter of the first ball bearing is greater than the thickness of the mounting cylinder.

3. The handle of the quick-release screwdriver according to claim 2, characterized in that, The mounting cylinder has a mounting hole, and the first ball is disposed in the mounting hole. The diameter of the end of the mounting hole opposite to the sliding sleeve is smaller than the outer diameter of the first ball.

4. The handle of the quick-release screwdriver according to claim 1, characterized in that, The first recess, the transition portion, and the second recess are arranged around the axis of the sliding sleeve, and at least two snap-fit ​​members are provided, which are arranged at intervals to each other; The limiting part is arranged around the axis of the mounting cylinder, and the elastic element is a first compression spring sleeved on the mounting cylinder. One end of the first compression spring abuts against the limiting part, and the other end abuts against the transition part.

5. The handle of the quick-release screwdriver according to claim 1, characterized in that, The sliding sleeve includes a first bushing and a second bushing that are slidable and sleeved on the mounting cylinder. The first recess is provided on the inner circumferential surface of the first bushing, and the second recess is provided on the second bushing. The first bushing and the second bushing are connected to form the transition portion.

6. The handle of the quick-release screwdriver according to any one of claims 1-5, characterized in that, The mounting cylinder has a slot for inserting the tool bar at the edge of the end away from the handle; the mounting cylinder is vertically disposed in the middle of the handle.

7. The handle of the quick-release screwdriver according to any one of claims 1-5, characterized in that, The handle is a hollow structure. The mounting cylinder extends into the handle and rotates with the handle. The mounting cylinder is provided with a ratchet portion located inside the handle. The handle is fixed with a movable pawl and a second compression spring for pressing the pawl. The pawl abuts against the second compression spring and the ratchet portion respectively.

8. The handle of the quick-release screwdriver according to claim 7, characterized in that, The pawl includes a top member and a second ball bearing disposed on one side of the top member. The second ball bearing abuts against the ratchet portion. The top member slides in engagement with the inner side of the mounting cylinder and abuts against the second compression spring.

9. The handle of the quick-release screwdriver according to claim 7, characterized in that, The ratchet portion includes a plurality of recesses formed on the outer peripheral surface of the mounting cylinder. The plurality of recesses are arranged at intervals and are all located inside the mounting cylinder. The pawl abuts against any of the recesses.

10. The handle of the quick-release screwdriver according to claim 7, characterized in that, The handle has a port at one end, and the second compression spring extends to the port. An end cap that can be inserted into the port to different depths is inserted into the port. The end cap is connected to the port and abuts against the second compression spring.

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