WO2016106800A1

WO2016106800A1 - Quick-release rod and screwdriver

Info

Publication number: WO2016106800A1
Application number: PCT/CN2015/070276
Authority: WO
Inventors: 王伯勇
Original assignee: 绍兴环洲工具制造有限公司
Priority date: 2014-12-29
Filing date: 2015-01-07
Publication date: 2016-07-07
Also published as: CN104526630B; CN104526630A

Abstract

Disclosed is a quick-release rod, comprising a connecting sleeve rod (1); one end of the connecting sleeve rod (1) is provided with a sleeve rod connection portion (1-4) for installing a screwdriver handle, and the other end of the connecting sleeve rod (1) is provided with a sleeve rod shaft hole (1-1) for installing a tool bit; the sleeve rod shaft hole (1-1) is provided with a tool bit installation portion (1-1-1) and a magnet assembly installation portion (1-1-2) having a magnet assembly installed therein; a fixed end of the magnet assembly expands to fit tightly in the magnet assembly installation portion (1-1-2), and a free end of the magnet assembly can slide in the magnet assembly installation portion (1-1-2); and a magnet (5) installed on the free end of the magnet assembly attracts the tool bit inserted in the tool bit installation portion (1-1-1). Also disclosed is a screwdriver, comprising a screwdriver handle, a screwdriver rod and a tool bit; and the screwdriver rod employs the above quick-release rod. The quick-release rod attracts and holds the tool bit via the magnet on the free end, thus facilitating a quick replacement of the tool bit.

Description

Quick release lever and screwdriver

The present invention claims the priority of the applicant's following Chinese patent application: the filing date is "December 29, 2014", the name is "quick release lever and screwdriver", and the application number is "201410836769.7".

Technical field

The present invention relates to a manual or electric tool for tightening or loosening screw and nut parts, and more particularly to a quick release lever and a screwdriver that can be quickly disassembled.

Background technique

For screw and nut parts, a screwdriver is usually used for disassembly and assembly. The screwdriver mainly includes the shank, the shank and the cutter head. The shank and the shank of the common product are usually fixed together. When disassembling and disassembling different specifications, the screwdriver of the corresponding specification needs to be replaced, which is not only convenient to use but also increased. The tool adds a fee.

Screwdrivers with replaceable cutter heads have been developed in the prior art, and cutter heads of different specifications are configured with the same joint, and the cutter bar is provided with a corresponding interface to install the joint. Generally, the corresponding position of the connector and the interface is provided with a bayonet pin: when the connector and the interface are docked, the pin is locked by the pin, so that the connector can be prevented from coming out of the interface; when the cutter head is replaced, the connector and the interface are removed. The bayonet pulls the cutter head out of the cutter bar. Since it is necessary to operate the bayonet exclusively, such a screwdriver is still not convenient when replacing the cutter head, so it is necessary to improve it to effectively improve the replacement efficiency of the cutter head.

technical problem

In view of the deficiencies of the prior art, an object of the embodiments of the present invention is to provide a quick release lever and a screwdriver with a simple structure, which can be conveniently replaced.

Problem solution

In order to solve the above technical problem, an embodiment of the present invention provides a quick release lever, including a connecting sleeve rod, and one end of the connecting sleeve rod is provided with a sleeve connecting portion for mounting the tool holder, and the other end of the connecting sleeve rod is provided with a sleeve rod for mounting the cutter head a shaft hole, a sleeve shaft hole is provided with a cutter head mounting portion; the sleeve shaft hole is further provided with a cutter head mounting portion, and a magnet assembly is mounted in the magnet assembly mounting portion, and the fixed end of the magnet assembly is expanded in the magnet assembly mounting portion, and the magnet assembly The free end is slidable within the magnet assembly mounting portion, and the free end of the magnet assembly mounts a magnet to adsorb the bit inserted into the bit mounting portion.

The magnet assembly comprises a T-section magnet sleeve, a expansion spring and an expansion element, the magnet is mounted on the inner hole of the magnet sleeve at the large diameter end of the magnet sleeve, the small diameter end of the magnet sleeve is inserted into one end of the expansion spring, and the expansion element is embedded in the expansion spring. One end, in order to deform the expansion spring to expand the magnet assembly mounting portion.

The expansion element comprises an expansion pin having a tapered portion and an expansion ring having an expansion notch, the expansion pin being mounted in the expansion spring, and the small diameter end of the expansion pin facing the inner hole of the expansion ring of the expansion ring, and the expansion pin entering the inner hole of the expansion ring The expansion spring is deformed by the expansion ring.

The locking release assembly is included, and the locking release assembly is mounted on one end of the connecting sleeve shaft having the sleeve shaft hole to lock/release the cutter head to be disassembled.

The lock release assembly comprises a ball and a sliding sleeve, and the ball is mounted in the sleeve positioning hole of the connecting sleeve, the sliding sleeve is mounted on the connecting sleeve and can slide on the connecting sleeve, and the sliding sleeve slides to the locking position The ball is moved into the cutter slot, and the slider is moved to the release position to move the ball out of the cutter slot.

The sliding sleeve is provided with a sliding sleeve shaft hole, the sliding sleeve shaft hole is provided with a sliding sleeve shaft hole taper flare portion, a sliding sleeve shaft hole cylindrical small diameter portion and a shaft hole cylindrical large diameter portion, and the shaft hole cylindrical large diameter portion The sliding sleeve limiting component is installed in the stroke range, and the cylindrical small diameter portion of the sliding sleeve shaft hole is located in the sleeve positioning hole to cause the ball to enter the cutter head slot, and the tapered flare portion of the sliding sleeve shaft hole is located in the sleeve positioning hole to move the ball out The cutter head slot.

The sliding sleeve limiting component is a circlip spring installed in the connecting rod slot of the connecting sleeve, and the circlip is located in the sliding block The inner end surface of the large diameter portion of the sleeve hole of the sleeve hole and the outer end surface of the large diameter portion of the sleeve hole of the sleeve are arranged to limit the stroke range of the large diameter portion of the shaft hole.

The connecting sleeve rods a return spring between the circlip and the inner end surface of the large diameter portion of the sliding sleeve shaft hole.

One end of the large diameter portion of the sliding sleeve has a sliding sleeve fixing ring, and the sliding sleeve fixing ring expands the sliding sleeve so that the sliding sleeve is restricted by the circlip.

On this basis, the embodiment of the invention further provides a screwdriver, which comprises a shank, a shank and a cutter head, and the arbor adopts the above quick release lever.

Advantageous effects of the invention

Compared with the prior art, the embodiment of the present invention provides a cutter mounting portion in a shaft hole of the connecting sleeve, wherein a magnet assembly fixed at one end and freely sliding at one end is mounted, and the cutter head is fixed by the magnet at the free end, thereby improving the cutter Head replacement efficiency. In particular, the embodiment of the present invention uses a lock release assembly including a sliding sleeve and a ball to lock/release the cutter head that needs to be disassembled, and the cutter head can be fixed by inserting the cutter head into the sleeve shaft hole during installation, and the sliding sleeve is pushed when disassembled. The cutter head can be removed and it is very convenient to operate.

Brief description of the drawing

1 is an exploded view of a quick release lever according to an embodiment of the present invention;

2 is an axial sectional view of a sliding sleeve in a quick release lever according to an embodiment of the present invention;

3 is an axial sectional view showing a connecting sleeve in a quick release lever according to an embodiment of the present invention;

4 is a schematic view showing the assembly of a quick release lever according to an embodiment of the present invention.

In Figures 1 to 4, the relevant reference numerals are as follows:

1. Connecting sleeve rod, 1-1, sleeve shaft hole, 1-1-1, cutter head mounting part, 1-1-2, magnet assembly mounting part, 1-2, sleeve positioning hole, 1-3, Set of rod slots, 1-4, sleeve connection;

2, circlip;

3. Reset spring;

4, the magnet sleeve, 4-1, the inner hole of the magnet sleeve;

5, the magnet;

6, the expansion spring;

7. Expansion nails;

8, expansion ring, 8-1, expansion ring inner hole, 8-2, expansion gap;

9, the ball;

10, sliding sleeve, 10-1, sliding sleeve shaft hole, 10-1-1, sliding sleeve shaft hole taper flare, 10-1-2, sliding sleeve shaft hole cylindrical small diameter, 10-1-3 , the inner end surface of the large diameter portion of the sliding sleeve shaft hole, 10-1-4, the cylindrical large diameter portion of the sliding sleeve shaft hole, 10-1-5, the outer end surface of the large diameter portion of the sliding sleeve shaft hole;

11. Slip sleeve fixing ring;

12, the cutter head, 12-1, the cutter head slot.

Invention embodiment

The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

1 to FIG. 4, wherein: FIG. 1 is an exploded view of a quick release lever according to an embodiment of the present invention; FIG. 2 is an axial sectional view of a slide sleeve in a quick release lever according to an embodiment of the present invention; An axial sectional view of the connecting sleeve in the quick release rod; FIG. 4 is a schematic view showing the assembly of the quick release rod according to the embodiment of the present invention. 1 to 4, the quick release lever of the embodiment of the present invention comprises a connecting sleeve 1, a circlip 2, a return spring 3, a magnet sleeve 4, a magnet 5, a expansion spring 6, an expansion screw 7, an expansion ring 8, and a ball. 9. The sliding sleeve 10, the sliding sleeve fixing ring 11 and the like are formed, wherein the cutter head 11 is fixed by the magnet assembly and the locking release assembly, which will be further described in detail below with reference to Figs.

As shown in FIG. 1 to FIG. 4, the quick release lever includes a connecting sleeve 1, and one end of the connecting sleeve 1 is provided with a hexagonal edge. A post or other shaped sleeve connecting portion 1-4 may be used to mount a shank (not shown); the other end of the connecting sleeve 1 is provided with a sleeve shaft hole 1-1 for mounting the cutter head 12, the sleeve The shaft hole 1-1 is composed of a cutter head mounting portion 1-1-1 and a magnet assembly mounting portion 1-1-2, wherein: a joint portion of the cutter head 12 is inserted into the cutter head mounting portion 1-1-1; A magnet assembly is mounted in the mounting portion 1-1-2, and the fixed end of the magnet assembly is expanded in the magnet assembly mounting portion 1-1-2, and the free end of the magnet assembly is slidable in the magnet assembly mounting portion 1-1-2 The free end of the magnet assembly is mounted with a magnet 5 which is a magnet or a magnet and can be sucked into the bit 12 inserted into the bit mounting portion 1-1-1.

In the embodiment shown in FIG. 1 to FIG. 4, a cutter head mounting portion 1-1-2 is disposed in the sleeve shaft hole 1-1 of the connecting sleeve 1, and one end of the magnet assembly is fixed to the cutter head mounting portion 1-1- In the inner portion 2, the other end is slidable in the cutter head mounting portion 1-1-2, so that the free end magnet 5 can conveniently adsorb and fix the cutter head 12, which is advantageous for improving the replacement efficiency of the cutter head 12.

For the embodiment of the invention, the magnet assembly can be easily disassembled. As shown in FIGS. 1 to 4, the magnet assembly includes a magnet 5, a magnet sleeve 4 having a T-shaped cross section, an expansion spring 6 of a substantially mesa body, an expansion nail 7 and an expansion ring 8 and the like: the magnet 5 is mounted on the magnet. The inner sleeve 4-1 of the magnet sleeve made of brass or other wear-resistant material of 4 large diameter ends, the small diameter end of the magnet sleeve 4 is embedded at the end of the outer contour of the expansion spring 6, and is composed of the expansion nail 7 and the expansion ring 8. The expansion element is then inserted into the other end of the expansion spring 6 having a larger outer contour to deform the expansion spring 6 to expand the magnet assembly mounting portion 1-1-2. Thus, the fixed end of the magnet assembly is housed in the mounting portion 1-1-2, and the free end magnet 5 is free to slide within the magnet assembly mounting portion 1-1-2. The magnet assembly structure is not only easy to install and remove, but also facilitates pressing the magnet 5 against the cutter head 12 by the expansion spring 6, thereby enhancing the adsorption fixing effect.

In this embodiment, the expansion element adopts a combined structure of the expansion screw 7+the expansion ring 8: the expansion screw 7 has a tapered portion, the small diameter end thereof is smaller than the inner ring hole 8-1 of the expansion ring, and the large diameter end is larger than the inner hole 8 of the expansion ring. The expansion ring 8 has an expansion ring inner hole 8-1 and an expansion notch 8-2 so as to expand after being loaded into the expansion nail 7. The expansion nail 7 is mounted in the expansion spring 6, and the small diameter end of the expansion nail 7 is mounted in the direction of the expansion ring inner hole 8-1 of the expansion ring 8, when the expansion nail 7 is forced into the expansion ring inner hole 8-1. The expansion ring 8 is deformed, and the deformation of the expansion ring 8 can further cause the expansion The spring 6 is deformed, whereby the expansion spring 6 is inflated in the magnet assembly mounting portion 1-1-2 to achieve the purpose of positioning and fixing the magnet assembly.

It can be understood that the magnet assembly can also adopt other structural forms, for example, the magnet sleeve 4 and the magnet 5 are integral; the expansion nail 7 is not limited to have a tapered portion; the expansion ring 8 is an elastic body; These simple structural forms are replaced, and the working principle is the same as that of the embodiment of the present invention, and details are not described herein again.

In the embodiment of the present invention, in order to better fix the cutter head 12, a lock release assembly is further provided. The locking release assembly is mounted on one end of the connecting sleeve rod 1 having the sleeve shaft hole 1-1 to lock/release the cutter head 12 to be disassembled, and a preferred structural form of the locking release assembly is described below. .

As shown in FIG. 1 to FIG. 4, the lock release assembly comprises a ball 9 made of steel or other hard material, a sliding sleeve 10 made of aluminum or other materials, wherein the ball 9 is mounted on the connecting sleeve. In the sleeve positioning hole 1-2 of the sleeve 1, the sliding sleeve 10 is set on the connecting sleeve 1 and can slide on the connecting sleeve 1: when the sliding sleeve 10 is slid to the locking position, the ball 9 is inserted into the cutting head The card slot 12-1; when the sliding sleeve 10 is slipped to the release position, the ball 9 is moved out of the bit slot 12-1. Thus, by operating the sliding sleeve 10, the ball 9 can be moved into or removed from the bit slot 12-1, thereby achieving locking or release of the bit 12.

As shown in FIG. 1 to FIG. 4, the sliding sleeve 10 is provided with a sliding sleeve shaft hole 10-1, and the sliding sleeve shaft hole 10-1 is provided with a sliding sleeve shaft hole taper flare portion 10-1-1 and a sliding sleeve shaft. The cylindrical small-diameter portion 10-1-2 and the shaft-shaped cylindrical large-diameter portion 10-1-4, three portions are sequentially connected, wherein: the shaft hole cylindrical large-diameter portion 10-1-4 is installed in the stroke range The limiting element; the sliding sleeve shaft hole small diameter portion 10-1-2 is located in the sleeve positioning hole 1-1-1 to make the ball 9 enter the cutter head slot 12-1; the sliding sleeve shaft hole taper flare portion When the 10-1-1 is located in the sleeve positioning hole 1-1-1, the ball 9 is moved out of the cutter head slot 12-1, and the ball 9 of the cutter head slot 12-1 is removed from the sleeve shaft hole taper flare portion 10. The shoulder of the -1-1 opening is blocked, so that the ball 9 does not come off the sleeve flared flared portion 10-1-1.

In this embodiment, the sliding sleeve 10 needs to be restrained by the sliding sleeve limiting element when sliding on the connecting sleeve 1 to prevent the two from being disengaged. The sliding sleeve limiting component can adopt various structural forms, one of which is an example: the sliding sleeve limiting component is a snap spring 2 mounted in the connecting rod slot 1-3 of the connecting sleeve 1 , the retaining spring 2 is located between the inner end surface 10-1-3 of the large diameter portion of the sleeve shaft hole of the sliding sleeve shaft hole 10-1 and the outer end surface 10-1-5 of the large diameter portion of the sliding sleeve shaft hole, and the inner end surface of the large diameter portion of the sliding sleeve shaft hole 10-1-3 forms a first sliding limit portion of the sliding sleeve 10, and the sliding sleeve fixing sleeve 11 installed at the outer end surface 10-1-5 of the large diameter portion of the sliding sleeve shaft hole forms a second sliding limit of the sliding sleeve 10. unit. Therefore, when the sliding sleeve 10 is slipped, the circlip 2 can restrict the stroke range of the large-diameter cylindrical portion 10-1-4 of the shaft hole, and the sliding sleeve 10 is restricted by the circlip 2 to be released.

As shown in FIG. 1 to FIG. 4, the connecting sleeve 1 is sleeved with a return spring 3 between the circlip 2 and the inner end surface 10-1-3 of the large diameter portion of the sliding sleeve shaft hole, and the inner diameter of the return spring 3 is smaller than that of the circlip 2 The outer diameter of the return spring 3 is larger than the inner diameter of the inner end surface 10-1-3 of the large diameter portion of the sleeve shaft hole to ensure that the return spring 3 is reliably located in the inner end surface 10-1 of the large diameter portion of the circlip 2 and the sleeve shaft hole. Between -3. When the sliding sleeve 10-1 is moved, the return spring 3 is compressed, and the cutter head 12 can be taken out from the sleeve shaft hole 1-1 of the connecting sleeve 1; when the external force of the sliding sleeve 10-1 is removed, the return spring 3 The sliding sleeve 10 is reset to the original position, and after the reset, the cutter head 12 can be loaded again in the sleeve shaft hole 1-1 of the connecting sleeve 1.

In this embodiment, the inner diameter of the inner end surface 10-1-3 of the large diameter portion of the sliding sleeve shaft hole is smaller than the outer diameter of the retaining spring 2 and the return spring 3, thereby forming the first sliding limit portion of the sliding sleeve 10; The inner diameter of the outer end surface 10-1-5 of the large diameter portion is larger than the outer diameters of the circlip 2 and the return spring 3 to ensure that the sliding sleeve 10 is conveniently fitted to the connecting sleeve 1 on which the circlip 2 and the return spring 3 are mounted. Preferably, the sliding sleeve fixing ring 11 is tightly fitted with the sliding sleeve 10 to limit the position. The specific structure is: the sliding sleeve 10 has one end of the large-diameter portion 10-1-4 of the shaft hole, specifically, the sliding sleeve has a large axial hole. One end of the outer end surface 10-1-5 of the radial portion is provided with a sliding sleeve fixing ring 11, and the outer diameter of the sliding sleeve fixing ring 11 is slightly larger than the inner diameter of the outer end surface 10-1-5 of the large diameter portion of the sliding sleeve shaft hole, so that the sliding sleeve is fixed. The ring 11 is tightly fitted with the sliding sleeve 10; at the same time, the inner diameter of the sliding sleeve fixing ring 11 is smaller than the outer diameter of the retaining spring 2, so as to form the second sliding limiting portion of the sliding sleeve 10, so that the sliding sleeve 10 is restrained by the retaining spring 2. And the inner diameter of the sliding sleeve fixing ring 11 should also be slightly larger than the outer diameter of the connecting sleeve 1 to ensure that the sliding sleeve fixing ring 11 can be slid on the connecting sleeve 1 together with the sliding sleeve 10 after the sliding sleeve 10 is inflated. shift.

In the embodiment shown in FIG. 1 to FIG. 4, the cutter head 12 to be disassembled is locked/released by using a lock release assembly including a sleeve 10, a ball 9 and the like, and the cutter head 12 is inserted into the sleeve during installation. The shaft hole 1-1 can be fixed. When the sliding sleeve 10 is pushed out during the disassembly, the cutter head 12 can be taken out, which is very convenient to operate, so that the efficiency of replacing the cutter head 12 is greatly improved.

The quick release rod described above is relatively simple to assemble, and the specific assembly process is as follows:

(1) Insert one end of the magnet 5 into the hole of the magnet sleeve 4, and then insert the small end of the magnet sleeve 4 into the hole at one end of the expansion spring 6, and then insert the larger end of the expansion screw 7 into the expansion spring 6 Inside the hole, the expansion ring 8 is then plugged, and the expansion ring 8 is tightly inserted into the expansion spring 6, and finally the magnet 5, the magnet sleeve 4, the spring 6, the expansion nail 7, and the expansion ring 8 are screwed into an integral magnet assembly.

(2) The twisted magnet assembly is entirely placed in the shaft hole of the connecting sleeve 1, and then the magnet sleeve 4 is pressed down, so that the expansion screw 7 is pressed into the expansion ring 8, and the expansion ring 8 is expanded to further expand. The spring 6 is simultaneously expanded, so that the expansion spring 6 is firmly extended at the bottom of the shaft hole of the connecting sleeve 1, so that the effect can not be obtained.

(3) Put the return spring 3 on the outer circlip 2 of the outer sleeve of the connecting sleeve 1, and then put the ball 9 into the positioning hole 1-3 of the connecting sleeve 1, and then insert the sliding sleeve 10 from top to bottom. The sleeve 1 is then fitted into the sleeve 10 from bottom to top, and the assembly of the quick release rod is completed.

In the above-described quick release lever structure, without inserting the sliding sleeve 10, the inserted cutter head 12 can be firmly sucked without falling out naturally, and cannot be easily taken out by an external force. When the cutter head 12 is replaced, the cutter head 12 will naturally fall out by simply pushing the slide sleeve 10 downward. In this way, the use of a replacement cutter head is quick and labor-saving.

The quick release lever of the embodiment of the present invention has been described in detail above. On this basis, the embodiment of the invention further provides a screwdriver, which comprises a shank, a shank and a cutter head, and the arbor adopts the above quick release lever. The screwdriver with the quick release rod can quickly load and unload the cutter head, and has the advantages of simple structure, compact layout, low cost and good market prospect.

The present invention is disclosed in the above preferred embodiments, but it is not intended to limit the invention, and any person skilled in the art can make possible changes and modifications without departing from the spirit and scope of the invention. The scope of the invention should be determined by the scope defined by the claims of the invention.

Claims

A quick release lever comprising a connecting sleeve (1), one end of the connecting sleeve (1) is provided with a sleeve connecting portion (1-4) for mounting a handle, and the other end of the connecting sleeve (1) Providing a sleeve shaft hole (1-1) for mounting a cutter head, the sleeve shaft hole (1-1) is provided with a cutter head mounting portion (1-1-1), characterized in that the sleeve shaft hole (1-1) further provided with a magnet assembly mounting portion (1-1-2) in which a magnet assembly is mounted, the fixed end of the magnet assembly being inflated to the In the magnet assembly mounting portion (1-1-2), the free end of the magnet assembly is slidable within the magnet assembly mounting portion (1-1-2), and the free end of the magnet assembly is mounted with a magnet (5) The cutter head inserted into the cutter head mounting portion (1-1-1) is adsorbed.
A quick release lever according to claim 1, wherein said magnet assembly comprises a T-section magnet sleeve (4), a expansion spring (6) and an expansion member, said magnet (5) being mounted on said a magnet sleeve inner hole (4-1) at a large diameter end of the magnet sleeve (4), a small diameter end of the magnet sleeve (4) is embedded in one end of the expansion spring (6), and the expansion element is embedded in the expansion spring The other end of (6) is such that the expansion spring (6) is deformed to expand the magnet assembly mounting portion (1-1-2).
A quick release lever according to claim 2, wherein said expansion member comprises an expansion pin (7) having a tapered portion and an expansion ring (8) having an expansion notch (8-2), said expansion pin (7) mounted in the expansion spring (6), and the small diameter end of the expansion screw (7) faces the expansion ring inner hole (8-1) of the expansion ring (8), the expansion nail ( 7) When the inner ring (8-1) of the expansion ring is entered, the expansion spring (6) is deformed by the expansion ring (8).
A quick release lever according to claim 1, comprising a lock release assembly mounted to one end of the sleeve sleeve (1) having a sleeve shaft hole (1-1), To lock/release the cutter head that needs to be disassembled.
A quick release lever according to claim 4, wherein said lock release assembly comprises a ball (9) and a sliding sleeve (10), said ball (9) being mounted to said connecting sleeve (1) Inside the sleeve positioning hole (1-3), the sliding sleeve (10) is mounted on the connecting sleeve (1) and can be The connecting sleeve (1) slides, and when the sliding sleeve (10) slides to the locking position, the ball (9) enters the cutting slot, and the sliding sleeve (10) slides to the release position. The ball (9) is moved out of the bit slot.
The quick release lever according to claim 5, wherein the sliding sleeve (10) is provided with a sliding sleeve shaft hole (10-1), and the sliding sleeve shaft hole (10-1) is provided with a sliding sleeve shaft a hole taper flare portion (10-1-1) and a sleeve shaft hole small diameter portion (10-1-2) and a shaft hole cylindrical large diameter portion (10-1-4), the shaft hole column A sliding sleeve limiting member is disposed in a stroke range of the large-diameter portion (10-1-4), and the cylindrical small-diameter portion (10-1-2) of the sliding sleeve shaft hole is located in the sleeve positioning hole (1-3) When the ball (9) is brought into the bit slot, the ball sleeve hole taper flare portion (10-1-1) is located at the sleeve positioning hole (1-3) to make the ball (9) Remove the cutter head slot.
The quick release lever according to claim 5, wherein the sliding sleeve limiting member is a snap spring (2) mounted in the connecting rod slot (1-3) of the connecting sleeve (1) The circlip (2) is located at the inner end surface (10-1-3) of the large diameter portion of the sliding sleeve shaft hole of the sliding sleeve shaft hole (10-1) and the outer end surface of the large diameter portion of the sliding sleeve shaft hole (10-1) Between -5) to limit the stroke range of the large-diameter cylindrical portion (10-1-4) of the shaft hole.
The quick release lever according to claim 7, wherein the connecting sleeve (1) is in the inner end surface (10-1-3) of the large diameter portion of the circlip (2) and the sliding sleeve shaft hole Set the return spring (3).
The quick release lever according to claim 7, wherein the sliding sleeve (10) has one end of the shaft-shaped cylindrical large diameter portion (10-1-4), and a sliding sleeve fixing ring (11) is disposed. A sliding sleeve retaining ring (11) expands the sliding sleeve (10) to limit the sliding sleeve (10) from being released by the retaining spring (2).
A screwdriver comprising a shank, a shank and a cutter head, characterized in that the arbor is a quick release lever according to any one of claims 1-9.