Quick-release knife handle

Abstract

The quick-release knife handle is used for clamping a knife blade, the quick-release knife handle comprises a holding part, a clamping part and a rotating part, the clamping part comprises a first clamping head, a second clamping head and an elastic part, the elastic part is arranged between the first clamping head and the second clamping head, and when the rotating part is rotated in the first direction, the elastic part is clamped between the first clamping head and the second clamping head. The first clamping head and the second clamping head gather inwards and abut against the width direction of the blade to clamp the blade; when the rotating piece is rotated in the second direction, the elastic piece enables the first clamping head and the second clamping head to be opened outwards, and a preset interval is formed between the first clamping head and the second clamping head. When the two chucks gather inwards, the two chucks abut against the width direction of the blade to clamp the blade, the situation that the blade deviates due to insufficient static friction force can be avoided, and the blade clamping effect is improved. And the elastic piece is arranged, so that after the blade is taken out, a certain interval can be formed between the two chucks, the two chucks do not need to be separated manually, and the convenience of mounting and fixing the blade is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of maintenance equipment, concretely relates to a quick-release tool holder. BACKGROUND

[0002] At present, in the maintenance process of electronic equipment, different types of blades are used for separating, prying, cleaning and assisting in disassembling precision components. Generally, two collets are installed in the front end of the tool holder, and a rotatable ring or sleeve is provided. After the blade is inserted into the gap between the two collets, the sleeve is rotated in the locking direction to tighten the internal collets, and the blade is fixed by the friction force between the collets and the blade. When the blade needs to be removed, the sleeve is rotated in the unlocking direction to loosen the internal collets, thereby releasing the fixation of the blade. However, relying solely on the static friction force between the collets and the blade to fix the blade may cause deviation during use, which may cause damage to the maintenance equipment and maintenance personnel, affecting maintenance safety and success rate. Moreover, after loosening the internal collets to remove the blade, the internal collets will automatically close. When reinstalling the blade, the closed two collets need to be pried open, and then the blade is inserted into the gap between the two collets, which makes the operation of inserting the blade into the tool holder for fixation more complicated.

[0003] Therefore, how to improve the convenience of blade fixation while ensuring the clamping effect of the blade has become a technical problem to be solved. SUMMARY

[0004] Based on the above status, the main purpose of the utility model is to provide a quick-release tool holder to improve the convenience of blade fixation while ensuring the clamping effect of the blade.

[0005] To achieve the above purpose, the utility model adopts the following technical scheme:

[0006] In a first aspect, the utility model discloses a quick-release tool holder for clamping a blade, which comprises a holding part, a clamping part and a rotating part. The rotating part is at least partially covered outside the clamping part. The clamping part includes a first collet, a second collet and an elastic part arranged between the first collet and the second collet. When the rotating part is rotated in a first direction, the first collet and the second collet converge inward to press against the width direction of the blade to clamp the blade. When the rotating part is rotated in a second direction, the elastic part causes the first collet and the second collet to open outward with a preset interval.

[0007] When the rotating part is rotated in a first direction, the first collet and the second collet converge inward to press against the width direction of the blade to clamp the blade.

[0008] When the rotating part is rotated in a second direction, the elastic part causes the first collet and the second collet to open outward with a preset interval.

[0009] Optionally, the first collet and the second collet are independent of each other, and the clamping part further comprises:

[0010] A fixing member is sleeved on the tail end of the first chuck and the tail end of the second chuck to fix the first chuck and the second chuck.

[0011] Optionally, the first chuck is provided with a first groove for placing the blade and pressing the blade in the width direction of the blade.

[0012] Optionally, the first groove is provided with a slope for pressing the side edge of the blade in the width direction of the blade.

[0013] Optionally, the clamping part further comprises a connecting member, one end of the connecting member being connected with the first chuck and the second chuck.

[0014] The holding part is provided with a screw hole, and the other end of the connecting member is at least partially screwed into the screw hole, and the connecting member is movable relative to the holding part.

[0015] Optionally, the connecting member comprises a limiting part and a connecting part, the outer peripheral surface of the connecting part and the inner side wall of the screw hole are formed with matching threads, and the limiting part is used for connecting and pulling the first chuck and the second chuck.

[0016] Optionally, when the first chuck and the second chuck are connected and fixed, a limiting space is formed between the tail end of the first chuck and the tail end of the second chuck, and the limiting part is located in the limiting space.

[0017] Optionally, a first tapered wall is formed in the inner side of the rotating member, and a second tapered wall matching the first tapered wall is formed on the outer peripheral surface of the first chuck.

[0018] When the first chuck moves in the direction of shrinking towards the first tapered wall, the first chuck and the second chuck are drawn together.

[0019] Optionally, the first chuck and the second chuck have the same structure, and the first chuck and the second chuck are centrally symmetrically arranged or axially symmetrically arranged.

[0020] Optionally, the outer peripheral side of the rotating member has a friction part.

[0021] Advantages:

[0022] The utility model discloses a quick detachable tool shank for clamping blade, the quick detachable tool shank includes holding part, clamping part and rotating piece, and rotating piece is at least partially covered in the outside of clamping part, and clamping part includes first chuck, second chuck and elastic piece, wherein, elastic piece is arranged between first chuck and second chuck, when rotating piece is rotated along first direction, first chuck and second chuck gather inwards, and first chuck and second chuck are pressed to the width direction of blade and carry out the clamping of blade, when rotating piece is rotated along second direction, elastic piece makes first chuck and second chuck open outwards and have preset interval. By rotating rotating piece along different directions, realize that first chuck and second chuck gather inwards or open outwards, when first chuck and second chuck gather inwards, first chuck and second chuck are pressed to the width direction of blade and carry out the clamping of blade, can avoid the deviation of blade due to the insufficient static friction, and then improve the clamping effect of blade. Setting up elastic piece makes first chuck and second chuck also can have certain interval between first chuck and second chuck after taking out blade, and first chuck and second chuck do not need to be separated manually when installing blade, thereby improving the convenience of blade installation and fixation.

[0023] Other beneficial effects of the utility model will be described in the specific implementation mode through the introduction of specific technical features and technical solutions, and the skilled in the art should understand the beneficial technical effects brought by the technical features and technical solutions through the introduction of these technical features and technical solutions. BRIEF DESCRIPTION OF DRAWINGS

[0024] The preferred embodiment of the utility model's quick detachable tool shank will be described below with reference to the drawings.

[0025] In the drawings:

[0026] Figure 1 It is the structure schematic drawing of the quick detachable tool shank disclosed in the embodiment;

[0027] Figure 2 It is the structure schematic drawing of the clamping part in the quick detachable tool shank disclosed in the embodiment;

[0028] Figure 3 It is the structure schematic drawing of the first chuck in the quick detachable tool shank disclosed in the embodiment;

[0029] Figure 4 It is the structure schematic drawing of the connecting piece in the quick detachable tool shank disclosed in the embodiment;

[0030] Figure 5 It is the cross section structure schematic drawing of the rotating piece in the quick detachable tool shank disclosed in the embodiment. DETAILED DESCRIPTION

[0031] The present invention will now be described based on embodiments, but the present invention is not limited to these embodiments. In the following detailed description of the present invention, some specific details are described in detail, but well-known methods, processes, procedures, and elements are not described in detail in order to avoid obscuring the essence of the present invention.

[0032] Furthermore, those skilled in the art should understand that the accompanying drawings provided herein are for illustrative purposes only and are not necessarily drawn to scale.

[0033] Unless the context explicitly requires it, the words "comprising," "including," and similar terms throughout the specification and claims should be interpreted as encompassing rather than being exclusive or exhaustive; that is, meaning "including but not limited to."

[0034] In the description of this utility model, it should be understood that the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance. Furthermore, in the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0035] To improve the ease of blade installation and fixation while ensuring maintenance safety and success rate, this embodiment discloses a quick-release blade holder. Please refer to [reference needed]. Figure 1 , Figure 1 This is a schematic diagram of a quick-release tool holder disclosed in this embodiment. The quick-release tool holder 10 is used to hold the blade 20, such as... Figure 1 As shown, the quick-release knife handle 10 includes a gripping portion 11, a clamping portion 12, and a rotating member 13, wherein the rotating member 13 at least partially covers the outside of the clamping portion 12. In this embodiment, the rotating member 13 at least partially covers the outside of the clamping portion 12, and the relative position between the clamping portion 12 and the rotating member 13 can be adjusted by rotating the rotating member 13, thereby allowing the clamping portion 12 to converge inward or open outward. In specific implementation, the clamping portion 12 can be completely covered by the rotating member 13, or it can be partially covered by the rotating member 13. Preferably, the clamping portion 12 is partially covered by the rotating member 13.

[0036] It can be understood that, in the embodiment, the rotating member 13 and the holding portion 11 are not directly connected, and thus, when adjusting the relative position between the clamping portion 12 and the rotating member 13 to realize the inward convergence or outward expansion of the clamping portion 12, the relative position between the clamping portion 12 and the rotating member 13 can be adjusted by rotating the rotating member 13, or the rotating member 13 can be fixed, and the relative position between the clamping portion 12 and the rotating member 13 can be adjusted by rotating the clamping portion 12 or the holding portion 11, but preferably, the relative position between the clamping portion 12 and the rotating member 13 is adjusted by rotating the rotating member 13, and compared with other manners, the rotating member 13 is more convenient to operate when locking and unlocking the blade 20.

[0037] Please refer to Figure 2 , Figure 2 is a structure diagram of a clamping portion in a quick-release handle of a tool disclosed in the embodiment. As shown in Figure 2 , the clamping portion 12 comprises a first chuck 121, a second chuck 122 and an elastic member 123, wherein the elastic member 123 is arranged between the first chuck 121 and the second chuck 122, when the rotating member 13 is rotated in a first direction, the first chuck 121 and the second chuck 122 converge inwardly and press against the width direction of the blade 20 to clamp the blade 20, and when the rotating member 13 is rotated in a second direction, the elastic member 123 makes the first chuck 121 and the second chuck 122 expand and have a preset interval.

[0038] In the embodiment, the elastic member 123 can be arranged between the head ends of the first chuck 121 and the second chuck 122, specifically, the head end of the first chuck 121 can be provided with a first placement position, and the head end of the second chuck 122 can be provided with a second placement position, so that the two ends of the elastic member 123 are fixed in the first placement position and the second placement position respectively to realize the fixation of the elastic member 123. Preferably, the first placement position is arranged on the side surface opposite to the second chuck 122, and the second placement position is arranged on the side surface opposite to the first chuck 121, that is, when the blade 20 is fixedly installed between the first chuck 121 and the second chuck 122, the elastic member 123 is substantially parallel to the blade 20, so as to avoid the position interference between the elastic member 123 and the blade 20 and affect the clamping effect.

[0039] In the embodiment, when the rotating member 13 is rotated in the first direction, the first clamp head 121 and the second clamp head 122 are closed inwardly, and specifically, the first clamp head 121 and the second clamp head 122 are closed inwardly and close to each other, so as to clamp the blade 20 in the width direction of the blade 20. Compared with the way of clamping the blade 20 in the thickness direction of the blade 20 by the first clamp head 121 and the second clamp head 122, and then fixing the blade 20 by the friction force between the first clamp head 121, the second clamp head 122 and the blade 20, the way of clamping the blade 20 in the width direction of the blade 20 in the embodiment can avoid the situation that the blade 20 deviates due to insufficient static friction. It should be noted that the "width direction of the blade" in the present application does not refer to the direction parallel to the width of the blade, but refers to the direction having a component in the width direction of the blade after vector decomposition, that is, the direction not perpendicular to the width direction of the blade, which can be parallel to the width direction of the blade or can have an angle less than 90 degrees with the width direction of the blade.

[0040] In the embodiment, when the rotating member 13 is rotated in the second direction, the first clamp head 121 and the second clamp head 122 are opened under the elastic force of the elastic member 123, and the first clamp head 121 and the second clamp head 122 have a preset interval, so as to facilitate the insertion of the blade 20 in the interval between the first clamp head 121 and the second clamp head 122. In the specific implementation process, the elastic member 123 can be a spring. The arrangement of the elastic member 123 makes the first clamp head 121 and the second clamp head 122 not adhere to each other and have a certain interval therebetween when the quick-release handle 10 is not installed with the blade 20, so that when the blade 20 is installed, the blade 20 can be directly inserted into the installation position without manually separating the first clamp head 121 and the second clamp head 122, thereby facilitating the installation of the blade 20 and improving the convenience of the installation and fixation of the blade 20.

[0041] In the optional embodiment, the first clamp head 121 and the second clamp head 122 are independent of each other, and the clamping part 11 further comprises a fixing member 124, which covers the tail end of the first clamp head 121 and the tail end of the second clamp head 122 to fix the first clamp head 121 and the second clamp head 122. In the embodiment, the first clamp head 121 and the second clamp head 122 are independent of each other, that is, the first clamp head 121 and the second clamp head 122 are two separate components, and the fixing member 124 covers the tail end of the first clamp head 121 and the tail end of the second clamp head 122 to connect and fix the first clamp head 121 and the second clamp head 122. Preferably, the fixing member 124 can use a silicone ring with a certain elasticity.

[0042] In the specific implementation process, please refer to Figure 3 , Figure 3A structure diagram of a first chuck in a quick-release tool handle disclosed in the embodiment is shown in FIG. 1. Figure 3 As shown in FIG. 1, a first mounting groove 1211 can be arranged at the tail end of the first chuck 121, and a second mounting groove can also be arranged at the tail end of the second chuck 122. The fixing member 124 is arranged in the first mounting groove and the second mounting groove, thereby connecting and fixing the first chuck 121 and the second chuck 122.

[0043] In an optional embodiment, a first recess 1212 is arranged in the first chuck 121, and the first recess 1212 is used to place the blade 20 and press the blade 20 in the width direction of the blade 20. In the embodiment, the first recess 1212 is arranged in the first chuck 121, the blade 20 is placed in the first recess 1212, and when the first chuck 121 and the second chuck 122 are gathered inward, the inner wall of the first recess 1212 presses the blade 20 in the width direction of the blade 20, thereby clamping the blade 20 in the width direction of the blade 20. The arrangement of the first recess 1212 can better fix and limit the blade 20, and improve the clamping effect on the blade 20.

[0044] In the specific implementation process, a second recess can also be arranged in the second chuck 122, and the first recess 1212 and the second recess can be arranged oppositely, thereby forming a containing cavity for placing the blade 20 when the first chuck 121 and the second chuck 122 are gathered inward, and fixing the blade 20 in the containing cavity.

[0045] In an optional embodiment, a slope 1213 is further arranged in the first recess 1212, and the slope 1213 is used to press the side edge of the blade 20 in the width direction of the blade 20. In the embodiment, the force exerted by the slope 1213 can be divided into a component in the width direction of the blade and a component in the thickness direction of the blade, and the component in the width direction of the blade can prevent the blade 20 from being deviated in the width direction during clamping. The slope is used as the pressing surface, which can be adapted to blades 20 of different widths and thicknesses. The width and thickness of the blade 20 are different, and the specific position of the side edge of the blade 20 contacting the pressing surface is different, but the pressing force is not affected, which can enhance the universality of the tool handle. In the specific implementation process, the number of the slope 1213 can be at least one, and preferably, the number of the slope 1213 is two.

[0046] In an optional embodiment, please refer to Figure 4 , Figure 4 A structure diagram of a connecting member in a quick-release tool handle disclosed in the embodiment is shown in FIG. 2. Figure 2 and Figure 4As shown in the figure, the clamping part 12 further comprises a connecting piece 125, one end of the connecting piece 125 is connected with the first chuck 121 and the second chuck 122, the holding part 11 is provided with a threaded hole 111, the connecting piece 125 is at least partially screwed in the threaded hole, and the connecting piece 125 is movable relative to the holding part 11. In the embodiment, the connecting piece 125 is connected with the first chuck 121 and the second chuck 122, so as to realize the synchronous movement between the connecting piece 125 and the first chuck 121 and the second chuck 122, that is, when the connecting piece 125 moves relative to the holding part 11, the first chuck 121 and the second chuck 122 also move relative to the holding part 11 at the same time.

[0047] In an optional embodiment, the connecting piece 125 comprises a limiting part 1251 and a connecting part 1252, the outer peripheral surface of the connecting part 1252 and the inner side wall of the threaded hole are formed with matched threads, and the limiting part 1251 is used for connecting and pulling the first chuck 121 and the second chuck 122. In the embodiment, the limiting part 1251 is arranged at one end of the connecting piece 125 and is connected with the first chuck 121 and the second chuck 122. Through the threaded connection between the connecting part 1252 and the holding part 11, the axial movement of the connecting piece 125 relative to the holding part 11 is realized, in the process, the first chuck 121 and the second chuck 122 also move axially relative to the holding part 11, so as to realize the movement of the first chuck 121 and the second chuck 122 relative to the holding part 11, and further achieve the purpose of locking and unlocking the blade 20.

[0048] In an optional embodiment, when the first chuck 121 and the second chuck 122 are connected and fixed, a limiting space 126 is formed between the tail end of the first chuck 121 and the tail end of the second chuck 122, and the limiting part 1251 is located in the limiting space 126. In the embodiment, the tail end of the first chuck 121 is provided with a first connecting space 1214, and the tail end of the second chuck 122 is provided with a second connecting space, when the first chuck 121 and the second chuck 122 are connected and fixed, the first connecting space 1214 and the second connecting space cooperate to form the limiting space 126, and the limiting part 1251 of the connecting piece 125 is fixed in the limiting space 126, so as to realize the connection between the connecting piece 125 and the first chuck 121 and the second chuck 122, and further realize the synchronous movement between the connecting piece 125 and the first chuck 121 and the second chuck 122.

[0049] In the specific implementation process, the shape of the limiting part 1251 can be non-cylindrical, and the shape of the limiting space 126 is non-cylindrical matched with the limiting part 1251. The limiting part 1251 is set to be non-cylindrical, so that the connecting piece 125 does not idle in the limiting space 126 during the rotation and axial movement relative to the holding part 11, thereby enabling the axial movement of the first chuck 121 and the second chuck 122, and realizing the synchronous movement between the connecting piece 125 and the first chuck 121 and the second chuck 122.

[0050] In an optional embodiment, referring to Figure 5 , Figure 5 The cross-sectional structure of the rotating part of the quick-release handle of the knife is disclosed in the embodiment. As shown in Figure 4 and Figure 5 , the first tapered wall 131 is formed on the inner side of the rotating part 13, and the outer periphery of the first chuck 121 is formed with a second tapered wall 1215 matched with the first tapered wall 131. When the first chuck 121 moves in the direction of contraction of the first tapered wall 131, the first chuck 121 and the second chuck 122 are gathered inward. In this embodiment, the inner side of the rotating part 13 is provided with the first tapered wall 131, which is tapered from the end of the rotating part 13 away from the holding part 11 to the end of the rotating part 13 close to the holding part 11. When the first chuck 121 moves in the direction of contraction of the first tapered wall 131 in the rotating part 13, it indicates that the distance between the first chuck 121 and the second chuck 122 gradually decreases at this time, that is, the first chuck 121 and the second chuck 122 are gathered inward and press against the width direction of the blade 20 to achieve the effect of clamping the blade 20.

[0051] In an optional embodiment, the first chuck 121 and the second chuck 122 have the same structure, and the first chuck 121 and the second chuck 122 are centrally symmetrically arranged or axially symmetrically arranged. The first chuck 121 and the second chuck 122 are arranged in the same structure, for example, the second groove for placing the blade 20 and pressing the blade 20 in the width direction of the blade 20 is also arranged on the second chuck 122, and the inclined surface is also arranged in the second groove, so that the blade 20 can be clamped in the width direction while the blade 20 does not or is not easy to tilt, because the blade 20 is embedded in the grooves of the first chuck 121 and the second chuck 122 at both ends, and the limiting effect of the grooves acts on both ends of the blade. The first chuck 121 and the second chuck 122 are centrally symmetrically arranged or axially symmetrically arranged, so that the blade 20 can be clamped in the width and thickness directions, and the blade 20 can be stably clamped, thereby improving the clamping effect of the blade 20.

[0052] In an optional embodiment, as shown in Figure 5As shown in the figure, the outer circumferential side of the rotating member 13 is provided with a friction part 132, which is used to increase the friction between the hand of the maintenance personnel and the rotating member 13 when the rotating member 13 is rotated, thereby facilitating the operation of the maintenance personnel. In the embodiment, the friction part 132 can cover the outer circumferential side of the rotating member 13, or can be provided on part of the outer circumferential side of the rotating member 13. For example, the friction part 132 can be an axial protruding stripe covering the outer circumferential side.

[0053] The utility model discloses a quick detachable tool shank for clamping a blade, which comprises a holding part 11, a clamping part 12 and a rotating member 13. The rotating member 13 is at least partially sleeved on the outer side of the clamping part 12. The clamping part 12 comprises a first chuck 121, a second chuck 122 and an elastic member 123. When the rotating member 13 is rotated in a first direction, the first chuck 121 and the second chuck 122 are inwardly gathered to press against the width direction of the blade 20 to clamp the blade 20. When the rotating member 13 is rotated in a second direction, the elastic member 123 causes the first chuck 121 and the second chuck 122 to outwardly spread and have a preset interval. By rotating the rotating member in different directions, the first chuck 121 and the second chuck 122 are inwardly gathered or outwardly spread. When the first chuck 121 and the second chuck 122 are inwardly gathered, the first chuck 121 and the second chuck 122 press against the width direction of the blade 20 to clamp the blade 20, which can avoid the offset of the blade 20 due to insufficient static friction, thereby improving the clamping effect on the blade 20. The provision of the elastic member 123 enables the first chuck 121 and the second chuck 122 to have a certain interval after the blade 20 is removed, so that the first chuck 121 and the second chuck 122 do not need to be manually separated when the blade 20 is installed, thereby improving the convenience of installing and fixing the blade 20.

[0054] Those skilled in the art can understand that the above-mentioned preferred schemes can be freely combined and superimposed without conflict.

[0055] It should be understood that the above-mentioned embodiments are only exemplary and not limiting, and those skilled in the art can make various obvious or equivalent modifications or replacements to the above-mentioned details without departing from the basic principles of the utility model, which shall be included in the scope of claims of the utility model.

Claims

1. A quick-release knife holder for holding a knife blade, characterized in that, The quick-release handle includes a holding part (11), a clamping part (12) and a rotating part (13), wherein the rotating part (13) is at least partially covered outside the clamping part (12), the clamping part (12) includes a first chuck (121), a second chuck (122) and an elastic part (123) arranged between the first chuck (121) and the second chuck (122), wherein: When the rotating part (13) is rotated in a first direction, the first chuck (121) and the second chuck (122) are inwardly closed to press against the width direction of the blade to clamp the blade; When the rotating part (13) is rotated in a second direction, the elastic part (123) causes the first chuck (121) and the second chuck (122) to be outwardly opened and have a preset interval.

2. The quick release tool holder according to claim 1, wherein The first chuck (121) and the second chuck (122) are independent of each other, and the clamping part (12) further includes: A fixing part (124) is covered on the tail end of the first chuck (121) and the tail end of the second chuck (122) to fix the first chuck (121) and the second chuck (122).

3. The quick release tool holder of claim 1, wherein, A first groove (1212) is arranged in the first chuck (121) to place the blade and press against the blade in the width direction of the blade.

4. The quick release tool holder according to claim 3, wherein An inclined surface (1213) is arranged in the first groove (1212) to press against the side edge of the blade in the width direction of the blade.

5. The quick release tool holder of claim 1, wherein, The clamping part (12) further includes a connecting part (125), one end of the connecting part (125) is connected with the first chuck (121) and the second chuck (122); The holding part (11) is provided with a screw hole, and the other end of the connecting part (125) is at least partially screwed in the screw hole, and the connecting part (125) is movable relative to the holding part (11).

6. The quick release tool holder of claim 5, wherein, The connecting part (125) includes a limiting part (1251) and a connecting part (1252), the outer peripheral surface of the connecting part (1252) and the inner side wall of the screw hole are formed with matching threads, and the limiting part (1251) is used to connect and pull the first chuck (121) and the second chuck (122).

7. The quick release tool holder of claim 6, wherein, When the first chuck (121) and the second chuck (122) are connected and fixed, a limiting space (126) is formed between the tail end of the first chuck (121) and the tail end of the second chuck (122), and the limiting part (1251) is located in the limiting space (126).

8. The quick disconnect tool shank of claim 1, wherein, A first tapered wall (131) is formed inside the rotating part (13), and a second tapered wall (1214) is formed on the outer peripheral surface of the first chuck (121) and matches the first tapered wall (131); When the first chuck (121) moves in the direction of contraction of the first tapered wall (131), the first chuck (121) and the second chuck (122) are inwardly closed.

9. The quick disconnect tool shank of claim 1, wherein, The first chuck (121) and the second chuck (122) have the same structure, and the first chuck (121) and the second chuck (122) are arranged in central symmetry or axial symmetry.

10. The quick disconnect shank of claim 1 wherein, The rotating member (13) has a friction portion (132) on the outer periphery.

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