TWM500658U - Tool bits and tool bit holders with floating magnet sleeves - Google Patents

Abstract

A tool bit assembly includes a tool bit having a shaft with a first working region disposed at a first end of the shaft and a first reduced diameter portion proximate the working region and disposed between a first shoulder and a second shoulder. A floating sleeve has a rear portion with a pair of opposed window openings, a front portion supporting a magnet, and a pair of balls, with each ball disposed in one of the window openings. The floating sleeve is receivable over the tool bit with the magnet proximate the first working regions and the balls received in the first reduced diameter portion to allow the floating sleeve to move between a first position in which the balls abut the first shoulder and a second position in which the balls abut the second shoulder.

Description

Tool head assembly and tool bit clamp assembly with magnetic float sleeve

The present invention relates to a cutter head assembly and a cutter head assembly having a magnetic float sleeve.

This section provides background information about this creation that is not necessarily prior art.

Auxiliary collets for power tools and hand tools have become more and more common, especially with the increasing versatility and desire for the use of power tools and hand tools. Such an auxiliary collet allows a hand or power tool to be used with any number of interchangeable cutter heads. This in turn leads to a need for better speed, convenience and ease of use of the cutter head to insert and remove the cutter head from such chucks.

In an exemplary type of such quick disassembly collet, one or more stop balls are positioned in the hollow cylindrical bit holder body and are resiliently biased into a circumferentially extending recess on the bit shank The groove or recess is engaged. An example of such a ball-type mechanism is disclosed in the commonly-assigned U.S. Patent No. 5,988,957, the disclosure of which is incorporated herein by reference. In other conventional quick-disconnecting collets, a spring biasing clip is used to engage the bit in the bit holder body. U.S. Patent Nos. 7,086,813 and 6,929,266, commonly assigned. An example of a spring biased clip design is disclosed in the above-referenced U.S. Patent.

This section provides the overall content of this creation, and does not fully disclose its full scope or all of its features.

While it has been found that the above-described type of tool holder can work in an acceptable manner, the present application provides a simple, relatively inexpensive, fast-acting collet assembly or tip holder that includes a front end portion of the floating sleeve. A ring magnet at the location to magnetize the fastener and assist in retaining the fastener to the tip and stabilizing the fastener during installation. The ring magnet can be supported to allow the magnet to float in the forward direction to engage the fastener or to float in the rearward direction to release the cutter head for quick one-handed tool change. The length of the float and the geometry of the magnet are such that the above features are allowed to work with fasteners having different head configurations and all cutter lengths are within normal accepted industrial tolerances.

The present invention provides a body having a coaxially extending hexagonal aperture for receiving a hexagonal cutter head. A spring biased telescoping collar is mounted to the body and engages a means for releasably retaining the hexagonal tool in the receptacle. The telescoping collar supports the magnet at its front end and allows the magnet to float in the forward direction to engage and magnetize the fastener that engages the bit. The magnet may be in the form of a ring magnet and may be fixedly mounted on the telescoping collar, wherein the magnet moves the telescopic collar in the forward direction. Alternatively, the telescoping collar may include a floating sleeve that supports the magnet and allows the magnet to float forward relative to the remainder of the telescoping collar.

According to another aspect of the creation, the cutter head clip is provided to be supported on the cutter head clamp Floating ring magnet on. The bit holder can be a pivot bit holder or a multi-clip holder such as a six-in-one rotary tool.

According to another aspect of the present invention, the cutter head is provided with a floating sleeve that supports the ring magnet at the front end portion of the cutter head. The floating sleeve can be supported on the cutter head using various techniques that will be disclosed herein. The cutter head may be a torsion cutter head including a handle and a working area, and a reduced diameter torsion region is disposed between the handle and the work area. The reduced diameter torsion region has a shoulder on the forward and rear end portions of the torsional region to help retain the floating sleeve on the cutter head.

According to another aspect, a magnet assembly for retaining a fastener on a tool bit is provided, the magnet assembly including a floating sleeve and a first ring magnet disposed at a front end of the floating sleeve. Providing a second ring magnet at a rear end portion of the floating sleeve, wherein the first ring magnet and the second ring magnet are disposed such that the magnetic poles are opposed to each other such that the floating sleeve is freely movable along the length of the cutter head, and A ring magnet is constructed to engage the head of the fastener. The first ring magnet and the second ring magnet are disposed at a distance of about 10 mm from each other, and may include an O-ring disposed between the first ring magnet and the second ring magnet in the interior of the sleeve to block the floating sleeve Movement along the cutter head.

Further areas of application will become apparent upon reading the description provided herein. The illustrations and specific examples in the present disclosure are for illustrative purposes only and are not intended to limit the scope of the present invention.

160, 160'‧‧‧ cutter head clip

162, 476, 558‧‧ ‧ handle

164, 472, 820‧‧‧ subjects

166, 478, 823‧‧‧ jacks

168, 168', 502, 512, 562, 574, 812 ‧ ‧ annular recess

170, 170', 474, 474', 510, 530, 556, 810 ‧ ‧ floating sleeve

174, 506, 578, 816‧ ‧ inner annular groove

174, 818‧‧‧ holders

174A‧‧‧elastic collar

174B, 818b‧‧‧O-shaped elastic ring

174C, 818c‧‧‧C-shaped elastic ring

175‧‧‧Round parking groove

176, 822‧‧‧ back end opening

177, 877 ‧ ‧ inner shoulder

178, 178', 308, 498, 503, 582, 592, 824, 916, 916", 918, 918" ‧ ‧ front shoulder

179, 879‧‧‧ front end

180, 180', 310, 501, 584, 826, 920, 920", 922, 922" ‧ ‧ rear shoulder

190, 516‧‧‧ sphere

192‧‧‧ openings

194‧‧‧Flexible hoop

304, 560, 904, 904', 904" ‧ ‧ first work area

306, 561, 572, 912'‧‧ ‧ reduced diameter

912, 912" ‧ ‧ first reduced diameter

40, 300, 552, 552'‧‧‧ cutter head

470, 470', 550, 800‧‧‧ cutter head assembly

480‧‧‧Additional holes

482‧‧‧ Magnet

484‧‧‧Threaded Department

486‧‧‧Threaded cover

488‧‧‧ internal thread

490, 500‧‧‧ shoulder

492‧‧‧O-ring

494‧‧‧ end face

496, 928, 928', 928", 930, 930', 930" ‧ ‧ ring groove

50, 450, 814‧‧‧ ring magnets

504, 504'‧‧‧C-shaped collar

508‧‧‧ spacer sleeve

514‧‧‧ window

554, 554’ ‧ ‧ pedestal collar

564‧‧‧ Groove

568‧‧‧ Inside groove

570, 580‧‧ ‧ card ring

576‧‧‧stop shoulder

586‧‧‧ back end

818a‧‧‧ steel collar

819‧‧‧Threaded fasteners

830‧‧‧Actuator sleeve

832‧‧‧Slim axial inner groove

840‧‧‧ handle

850‧‧‧First positioning ring

860‧‧‧Return spring

870‧‧‧Slim elastic finger

871‧‧‧ Main body

872‧‧‧ pushed by the end

873‧‧‧Card end

880‧‧‧Second positioning ring

890‧‧‧Ejection mechanism

891‧‧‧Plunger

892‧‧‧Magnetic components

893‧‧‧Flexible components

900, 900’, 900” ‧ ‧ double end cutter head

902, 902’, 902”‧‧‧ axes

906, 906’, 906” ‧ ‧ first end

910, 910’, 910” ‧ ‧ second end

908, 908’, 908” ‧ ‧ second work area

914, 914" ‧ ‧ second reduced diameter

916’‧‧‧First shoulder

920’‧‧‧second shoulder

924, 924’, 924” ‧ ‧ first handle

926, 926’, 926” ‧ ‧ second handle

932, 932" ‧ ‧ middle section

934"‧‧‧ Third reduction section

The drawings described herein are merely illustrative of the selected embodiments and not all possible embodiments, and are not intended to limit the scope of the present invention.

1A-1C are partial cross-sectional views of a bit holder assembly in accordance with an embodiment; FIG. 1D is a partial cross-sectional view of a bit holder assembly in accordance with an alternative embodiment; FIG. 1E is a portion of a bit holder assembly in accordance with an alternative embodiment 2 is a plan view of the collar-type holder used in the embodiment of FIGS. 1A to 1E; and FIGS. 3A and 3B are O-shaped elastic rings and C which can be used in the embodiment of FIGS. 1A to 1E. Figure 4 is a partial cross-sectional view of a bit holder according to another embodiment of the present principles; Figure 5 is a perspective view of a ball and an elastic band used in accordance with the alternative embodiment shown in Figure 4; 6 is a side plan view of an alternative bit holder assembly in accordance with the principles of the present teaching; FIG. 7A is a longitudinal or axial cross-sectional view of the bit holder assembly of FIG. 6; FIG. 7B is an alternate embodiment of the bit holder assembly of FIG. Longitudinal or axial cross-sectional view of the example; FIG. 8 is a side plan view of the main body of the bit holder assembly shown in FIG. 6; FIG. 9 is a longitudinal or axial cross-sectional view of the floating sleeve of the bit holder assembly of FIG. 6; It is a perspective view of the design of the cutter head and the optional floating sleeve according to the present invention; FIG. 11 is the diagram of FIG. A cross-sectional view of the illustrated cutter head and the floating sleeve, the floating sleeve is in a front position; FIG. 12 is a cross-sectional view of the cutter head and the floating sleeve shown in FIG. 10, the floating sleeve is in a rear position; Figure 13 is a perspective view of the floating sleeve shown in Figure 10; Figure 14 is a side plan view of the floating sleeve shown in Figure 10; Figure 15 is a longitudinal cross-sectional view of the floating sleeve shown in Figure 10; Figure 16 is Figure 10. A side plan view of the illustrated cutter head; FIG. 17A is a cross-sectional view of the cutter head and the floating sleeve according to another embodiment of the present invention, the illustrated floating sleeve is in a forward position; FIG. 17B is a view shown in FIG. 17A. A cross-sectional view of the cutter head and the floating sleeve, the floating sleeve is in a rearward position; FIG. 18 is a perspective view of the floating sleeve shown in FIG. 17A; FIG. 19 is a longitudinal cross-sectional view of the floating sleeve assembly shown in FIG. 17A; 17A is a longitudinal cross-sectional view of the floating sleeve shown in FIG. 17A; FIG. 21 is a side plan view of the floating sleeve shown in FIG. 17A; FIG. 22 is a cross-sectional view of the cutter head and the floating sleeve according to another embodiment of the present invention; Figure 22 is a cross-sectional view of the floating sleeve with the optional cutter head shown in Figure 22; Figure 24 is a perspective view of the floating sleeve assembly shown in Figure 22; Figure 25 is an exploded cross-sectional view of the floating sleeve shown in Figure 22; 26 is a cross-sectional view of the floating sleeve shown in FIG. 22, the floating sleeve is in the rear position; FIG. 27 is FIG. A cross-sectional view of the illustrated floating sleeve with the floating sleeve in a forward position; FIG. 28 is a cross-sectional view of the cutter head and floating sleeve in accordance with another embodiment of the present teaching Figure 29 is a side plan view of the cutter head shown in Figure 28; Figure 30 is a cross-sectional view of the cutter head and the floating sleeve according to another embodiment of the present invention; Figure 31 is the side of the cutter head shown in Figure 30 Figure 32 is a partial cross-sectional perspective view of another embodiment of the bit holder assembly; Figures 33A and 33B are partial cross-sectional plan views of the bit holder assembly of Figure 32; Figure 33C is a bit holder assembly of Figure 32 A partial cross-sectional plan view of an alternative embodiment; FIGS. 34A-34C are plan views of various retaining members for use with the bit holder assembly of FIGS. 33A-33C; FIG. 35 is a double end knife for use with the maglev sleeve of FIG. Side view of the head; Fig. 36 is a side view of the tool bit of Fig. 35 received in the magnetic levitation sleeve of Fig. 10; Figs. 37A and 37B are cross-sectional views of the tool bit of Fig. 35, the magnetic levitation sleeve of Fig. 10 is received On the first working area and the second working area of the cutter head; FIG. 38 is a side view of another embodiment of the double-end cutter head used with the magnetic levitation sleeve of FIG. 10; FIG. 39 is the magnetic levitation sleeve of FIG. Side view of another embodiment of a double ended cutter head for use with a cartridge. Corresponding reference characters indicate corresponding parts throughout the claims.

Corresponding reference characters indicate corresponding parts throughout the claims.

A number of exemplary embodiments will be described more fully with reference to the accompanying drawings.

The exemplary embodiments are provided to enable the disclosure of the present invention to be fully and fully conveyed to those skilled in the art. Numerous specific details are set forth, such as examples of specific components, devices, and methods, to provide a thorough understanding of the embodiments of the present invention. It is apparent that the specific details are not necessarily required to those skilled in the art, and the exemplary embodiments may be embodied in many different forms and should not be construed as limiting the scope of the present invention. In some example embodiments, conventional methods, conventional device structures, and well-known techniques are not described in detail herein.

The terminology used herein is for the purpose of describing the particular embodiments embodiments The singular forms "a", "the", and "the" The terms "including", "comprising", "comprising" and "having" are meant to be inclusive, and are in the meaning A variety of other features, integers, steps, operations, components, components, and/or combinations thereof. The method steps, processes, and operations described herein are not to be construed as necessarily requiring a particular order to be discussed or illustrated. It should also be understood that additional or optional steps may be employed.

When an element or layer is referred to as "above", "coupled", "connected" or "coupled" to another element or layer, it can be On the floor, straight It is also possible to engage with the other element or layer, directly with the other element or layer, or directly with the other element or layer, or an intermediate element or intermediate layer. In contrast, when an element is referred to as "directly on another element or layer", "directly to another element or layer", "directly connected to another element or layer" or "directly coupled to another element. Or layer", there are no intermediate elements or intermediate layers. Other terms used to describe the relationship between elements should be interpreted in a similar manner (eg, "between" and "directly between", "adjacent" and "directly adjacent", etc. ). The term "and/or" as used herein includes any and all combinations of one or more of the associated listed.

Although the terms first, second, third, etc. may be used herein to describe various elements, components, regions, layers and/or portions, these elements, components, regions, layers and/or portions are not to be limit. These terms may be only used to distinguish one element, component, region, layer or portion from another region, layer or portion. Terms such as "first," "second," and other numerical terms when used herein do not imply the order or order. Thus, a first element, component, region, layer or section that is discussed below may be referred to as a second element, component, region, layer, or section, without departing from the teachings of the exemplary embodiments.

Spatially related terms such as "inside", "outside", "below", "below", "lower", "above", "upper", etc. are used herein to facilitate the description of one A relationship of an element or feature with respect to another element or features. Spatially related terms may be intended to encompass different orientations of the device in use or operation, in addition to the orientations described in the Figures. For example, elements that are described as "under" or "beneath" other elements or features are to be "Upper." As such, the exemplary term "lower" can encompass both an orientation of above and below. The device may be otherwise oriented (rotated 90 degrees or at other orientations) and the spatial correlation descriptors used herein are also interpreted accordingly.

Referring to Figures 1A-1C, a bit holder 160 is shown to include a hexagonal or polygonal handle 162 and a body 164 that includes a hexagon or polygon at its end for receiving a bit 40. Jack 166. An outer annular surface of the body 164 is provided with an elongated annular recess 168. A floating sleeve 170 is disposed on the end of the body 164, and the floating sleeve 170 supports an annular magnet 50 at its end. The floating sleeve 170 includes an inner annular groove 172 that receives a retaining member 174 therein. The floating sleeve 170 can be removably attached to the body 164 by forcing the body 164 into the rear end opening 176 of the floating sleeve 170 until the holder 174 is received in the annular recess 168 of the body 164.

The annular recess 168 is provided with a front shoulder 178 and a rear shoulder 180 that allow the floating sleeve 170 to travel in the fore-and-aft direction as indicated by arrow A, while the front and rear shoulders 178, 180 are supported by the retaining member 174. The movement of the floating sleeve 170 is restricted. Therefore, the floating sleeve can be between a front position where the holder 174 is engaged with the front shoulder portion 178 as shown in FIG. 1B and a rear position where the holder 174 and the rear shoulder portion 180 are engaged as shown in FIG. 1C. Floating freely. As shown in FIGS. 2, 3A and 3B, the holder 174 may take the form of a non-elastic member such as steel or an elastic collar 174A as shown in FIG. 2, or an O-ring such as that shown in FIG. 3A. 174B or an elastic member such as a C-shaped elastic ring 174C as shown in FIG. 3B. The floating sleeve 170 allows the ring magnet 50 to float forward under its magnetic force to engage with the head of a fastener and magnetize the fastener to improve the retention of the fastener and the cutter head 40.

Referring to FIG. 1D, in an alternative embodiment, the floating sleeve 170 can also The rearward movement is to position the retaining member 174 in a parked position rearward of the rear shoulder 180. In the present embodiment, the retaining member 174 includes an elastic member (such as an O-shaped elastic ring 174B or a C-shaped elastic ring 174C), and when the floating sleeve 170 is axially pulled back to the park position, the elastic member is Stretch and stretch. The extended resilient retaining member 174 frictionally engages the outer wall of the body 164 in a sealed manner to retain the floating sleeve 170 in the park position until the user pulls the outer floating sleeve forward to return to Figures 1A-1C. One of several floating positions shown. The inner shoulder 177 on the front end of the floating sleeve 170 abuts the front end 179 of the body 164 to prevent the floating sleeve 170 from moving further rearward beyond the park position. In the parked position, the user is more likely to grasp the cutter head 40 and remove the cutter head 40 from the receptacle 166. Referring to FIG. 1E, in another embodiment, the body 164 can be formed with an annular parking recess 175 located behind the annular recess 168 to more reliably retain the retaining member 174 and the floating sleeve 170 in the parked position.

As an alternative embodiment, as shown in FIG. 4, the bit holder 160' can use an optional retaining member in the form of a ball 190 that can be received in the opening 192 of the floating sleeve 170' and that can be utilized by steel An annular elastic band 194 of plastic or other suitable material is retained in the opening 192. The ball is received in an annular recess 168' such that the floating sleeve 170' can be in a forward position where the ball 190 engages the front shoulder 178' of the annular recess 168' and the rear shoulder 180 of the ball and annular recess 168' 'The position of the rear of the snap floats. In operation, the bit holders 160, 160' can be used to engage a fastener via the bit 40, and the floating sleeves 170, 170' allow the ring magnet 50 to float forward under its magnetic force to tightly The firmware snaps and magnetizes the fasteners to improve the retention of the fasteners and the cutter head 40. In an alternative embodiment, the floating sleeve 170' can be moved to a rear position such that the ball 190 is positioned behind the rear shoulder 180' and snaps into a recess in the body 164 or body 164 to It is easier to remove the cutter head 40.

Referring to Figures 6, 7A, 8 and 9, the disclosed cartridge assembly 470 includes a body 472 and a floating sleeve 474. The body 472 includes a first end defining a handle 476 and a second end defining a polygonal receptacle 478 which may be hexagonal or may have other polygonal shapes. At the inner end of the polygonal jack 478, an additional aperture 480 for receiving a magnet 482 therein may be provided. The outer surface at the second end of the body 472 includes a threaded portion 484 adapted to receive a threaded cover 486. The threaded cap 486 includes an internal thread 488 that engages the threaded portion 484. The threaded cap 486 also includes a radially inwardly extending shoulder 490 that axially locks an O-ring 492 between the shoulder 490 and the end face 494 of the body 472. An annular groove 496 having a front shoulder 498 is formed at the rear end of the threaded portion 484. A shoulder 500 for engaging the front shoulder 498 at the front end portion of the annular groove 496 is formed at the rear end portion of the screw cap 486. The front shoulder 498 and the shoulder 500 limit axial forward axial movement of the threaded cover 486.

When the cutter head 40 (not shown) is inserted into the polygonal jack 478, the screw cap 486 can be fastened to the O-ring 492 such that the O-ring 492 extends radially inwardly to snap to the cutter head 40 and the cutter head 40 is secured in the receptacle 478. To remove the cutter head 40, the threaded cover 486 can be rotated to release the clamping force on the O-ring 492, thereby allowing the O-ring 492 to disengage from the cutter head 40 and permit removal of the cutter head 40.

The body 472 also includes an annular recess 502 at an intermediate location on the body 472. The annular recess 502 is disposed in the outer surface of the body and is elongated in the axial direction to accommodate a C-shaped collar 504 that is received in an inner annular recess 506 on the interior of the floating sleeve 474. The C-shaped collar 504 can follow the length of the annular recess 502 along the axis The travel is made to allow the floating sleeve 474 to float in the front-rear direction. The annular recess 502 has a front shoulder and a rear shoulder that limit the axial movement of the floating sleeve. The C-shaped collar 504 is flexible to allow the floating sleeve 474 to be removed from the body 472 such that the threaded cover 486 can be accessed to tighten and loosen the threaded cover 486 to allow insertion of the cutter head 40 into the polygonal receptacle 478. The neutralization removes the cutter head from the polygonal jack 478. The front end of the floating sleeve 474 supports an annular magnet 50 that is allowed to move in the fore and aft direction to engage and magnetize a fastener to retain the fastener to the cutter head 40. A spacer sleeve 508 can be disposed behind the ring magnet 50 and can limit rearward movement of the floating sleeve 474 by engagement with the front end of the screw cap 486.

In operation, the handle 476 can be inserted directly into a drill or indirectly into a drill via a quick disassembly collet assembly. The floating sleeve 474 can be removed from the body 472 and the tool bit 40 can be inserted into the polygonal jack 478. Magnet 482 draws cutter head 40 to the rearmost position within polygonal receptacle 478. The threaded cap 486 can then be tightened in the rearward direction R such that the O-ring 492 extends radially inwardly while being compressed, thereby snapping into the cutter head 40 and securing the cutter head 40 in the polygonal receptacle 478 . The floating sleeve 474 can then slide over the end of the body 472 such that the C-shaped collar 504 is received in the annular recess 502 to limit axial movement of the floating sleeve 474. When a fastener 54 (not shown) is engaged with the cutter head 40, the floating sleeve 474, under the influence of the ring magnet 50, can slide axially forwardly to engage the fastener 54, thereby magnetizing the fastener 54 and The fastener 54 is held to the cutter head 40.

Referring to Figure 7B, in an alternative embodiment, a bit holder assembly 470' can include the body 472, the handle 476 and the threaded cover 486, and a modified floating sleeve 474'. The floating sleeve 474' can include a retaining member 504', such as an O-shaped or C-shaped resilient ring, received in an annular recess 502 on the exterior of the body 472 to allow the floating sleeve 474' to be A front shoulder 503 of the annular recess 502 and a rear position and a rear position of the rear shoulder 501 are floated. As noted above, the floating sleeve 474' supports an annular magnet 450 that is allowed to move in the fore and aft direction to engage and magnetize fasteners with a fastener to retain the fastener to the cutter head 40. The floating sleeve 474' differs from the floating sleeve 474 of Figure 7A in that there is no spacer sleeve 508 and the floating sleeve 474' can be moved further rearward to a parked position as shown at 7B. In the park position, the retaining member 504' engages with the outer wall of the body 472 (or a parking recess formed in the outer wall of the body 472). This exposes the threaded cover 486 so that the threaded cover 486 can be removed from the body 472 without removing the floating sleeve 474' from the body 472.

Referring to Figures 10 through 16, an alternative configuration of the floating sleeve 510 in accordance with the principles of the present teachings will now be described. The floating sleeve 510 includes an elongated annular recess 512 on its outer surface and a pair of tapered windows 514 that extend through the sleeve 510 opposite each other within the elongated annular recess 512. The two windows 514 each receive a ball 516 therein, and an elastic band 518 is received in the elongated annular recess 512 and is located on top of the two balls 516 to secure the two balls 516 in the pair of tapered windows 514. in. The two spheres 516 are designed to be received in a reduced diameter portion 306 between the front shoulder 308 and the rear shoulder 310 of the cutter head 300 to limit axial movement of the floating sleeve 510 in the fore and aft direction.

During insertion of the cutter head 300 into the floating sleeve 510, the elastic band 518 allows the two spheres 516 while a working region 304 of the cutter head 300 is inserted into or removed from the floating sleeve 510. The spring force of the elastic band 518 is pushed radially outward. When the two spheres 516 reach the reduced diameter portion 306 of the cutter head 300, the two spheres 516 move radially inwardly such that the force of the elastic band 518 acting on the ball 516 is reduced. Its meaning When the two spheres 516 are engaged with the front shoulder 308 and the rear shoulder 310 of the reduced diameter portion 306, the two spheres 516 provide interference but do not provide significant relief to the floating motion of the floating sleeve 510 along the cutter head 300. resistance. A ring magnet 50 is disposed at the front end of the floating sleeve 510 and is designed to magnetize a fastener 54 (not shown) that engages the bit 300. Figure 11 shows the floating sleeve 510 in the forward position and Figure 12 shows the floating sleeve 510 in the rear position.

Additionally, referring to Figures 35 and 36, the floating sleeve 510 can be received on the end of a double ended bit 900. The double ended bit 900 includes a shaft 902 having a first working region (eg, a screwdriver bit) 904 at a first end 906 and a second working region at a second end 910 (eg, Screwdriver head) 908. The shaft also includes a first reduced diameter portion 912 adjacent the first working region 904 and a second reduced diameter portion 914 adjacent the second working region 908. Each of the first and second reduced diameter portions 912, 914 is adjacent to the front shoulder portions 916, 918 of the respective first and second working regions 904, 908 and away from the respective first and second working regions 904, The rear shoulders 920, 922 of the 908 are defined. The first and second reduced diameter portions 912, 914 can serve as a torsion region that reduces torsional stress and damage in the shaft 902.

A first handle 924 and a second handle 926 are adjacent to the first working area 904 and the second working area 908, and each of the first handle 924 and the second handle 926 are respectively disposed at a corresponding first, The second working areas 904, 908 are between the first and second reduced diameter portions 912, 914. The first and second handles 924, 926 each have a hexagonal cross section and are interrupted by annular grooves 928, 930. When the second working area 908 is used to drive a fastener, the first handle 924 is configured to be retained in a bit holder of the fastening tool. When the first working area 904 is used to drive a fastener, the second handle 926 is configured to be retained in a bit holder of a fastening tool. Having a hexagonal cross section between the first and second reduced diameter portions 912, 914 An intermediate portion 932 of the face.

Additionally, referring to Figures 37A and 37B, the floating sleeve 510 is optionally received on the first end 906 of the tip 900 (Figure 37A) or on the second end 910 of the tip 900 (Figure 37B). During insertion of the cutter head 900 into the floating sleeve 510, the elastic ferrule 518 is inserted into or removed from the floating sleeve 510 while the first and second working regions 904, 908 of the cutter head 900 are inserted into or removed from the floating sleeve 510. The two spheres 516 are allowed to be pushed radially outward by the spring force of the elastic band 518. When the two spheres 516 reach the respective first and second reduced diameter portions 912, 914 of the cutter head 900, the two spheres 516 move radially inward, such that the force of the elastic band 518 acting on the ball 516 is reduced. . When the two spheres 516 are engaged with the front shoulders 916, 918 and the rear shoulders 920, 922 of the first reduced diameter portion 912 and the second reduced diameter portion 914, the two spheres 516 provide interference but not a floating sleeve The floating motion of the barrel 510 along the cutter head 900 provides significant resistance. A ring magnet 50 disposed at a front end portion of the floating sleeve 510 floats forward to attract and magnetize a head of a fastener that engages with the respective first and second working regions 904, 908 of the cutter head 900 (not show).

Referring to Figure 38, another embodiment of a double ended bit 900' for use with a floating sleeve 510 includes a shaft 902' having a first working region (e.g., a screw) at a first end 906' The driver head 904' and a second working area (eg, a screwdriver bit) 908' at a second end 910'. The shaft includes a single reduced diameter portion 912' that is equidistantly disposed between the first working region 904' and the second working region 908'. The reduced diameter portion 912' is defined by a first shoulder 916' adjacent the first working region 904' and a second shoulder 920' adjacent the second working region 908'. The reduced diameter portion 912' can be used as a torsion region that reduces torsional stress and damage in the shaft 902'.

A first handle portion 924' and a second handle portion 926' are adjacent to the first working area 904' and the second working area 908', each of the first handle portion 924' and the second handle portion 926' respectively It is disposed between the corresponding first and second working areas 904', 908' and the reduced diameter portion 912'. The first and second handle portions 924', 926' each have a hexagonal cross section and are interrupted by annular grooves 928', 930'. When the second working area 908' is used to drive a fastener, the first handle 924' is configured to be retained in a bit holder of a fastening tool. When the first working area 904' is used to drive a fastener, the second handle 926' is configured to be retained in a bit holder of a fastening tool. Floating sleeve 510 is optionally received on first end 906' or second end 910' of cutter head 900'. In either case, the two spheres 516 are received in the reduced diameter portion 912' and moved between the first shoulder 916' and the second shoulder 920', thereby allowing the floating sleeve 510 relative to the cutter head 900 The respective first and second working areas 904', 908' of 'float.

Referring to Figure 39, another embodiment of a double ended bit 900" for use with a floating sleeve 510 includes a shaft 902" having a first working region (e.g., a screw) at a first end 906" a driver head) 904" and a second working area (eg, a screwdriver bit) 908" at a second end 910". The shaft further includes a first reduced diameter portion 912" adjacent the first working region 904" and a second reduced diameter portion 914" adjacent to the second working region 908". Each of the first and second reduced diameter portions 912", 914" is adjacent to the respective first and second working regions 904", 908, respectively. "The front shoulders 916", 918" and the rear shoulders 920", 922" away from the respective first and second working areas 904", 908" are defined. The first and second reduced diameter portions 912", 914 "Can be used as a torsion zone for reducing the torsional stress and damage in the shaft 902".

A first handle 924" and a second handle 926" are adjacent to the first working region 904" and the second working region 908", each of the first handle 924" and the second handle 926" One is disposed between the respective first and second working areas 904", 908" and the first and second reduced diameter portions 912", 914", respectively. The first and second handle portions 924", 926" each have a hexagonal cross section and are interrupted by annular grooves 928", 930". When the second working area 908" is used to drive a fastener, the first handle 924" is configured to be retained in a bit holder of a fastening tool. When the first working area 904" is used to drive a fastener, the second handle 926" is configured to be retained in a bit holder of a fastening tool. An intermediate portion 932" having a hexagonal cross section and a third reduced diameter portion 934" are disposed between the first and second reduced diameter portions 912", 914". The third reduced diameter portion 934" can be used as another torsional region that reduces torsional stress and damage in the shaft 902". The floating sleeve 510 is optionally received on the first end 906" or the second end 910" of the cutter head 900". In either case, the two spheres 516 are received in the first reduced diameter portion 912", And moving between the first shoulder 916" and the second shoulder 920", thereby allowing the floating sleeve 510 to float relative to the respective first and second working regions 904", 908" of the cutter head 900".

17 through 21 illustrate an alternative configuration of the floating sleeve 530 that is provided with the same configuration as the floating sleeve 510, but differs in external dimensions and appearance. Therefore, the same reference numerals will be used to describe the components of the floating sleeve 510 for the components of the floating sleeve 530, and a detailed description of the floating sleeve 530 is not considered necessary, but only to be noted that its size and floating sleeve The cartridges 510 are sized differently for use with different types of cutter heads having smaller working head regions and/or longer reduced diameter portions.

Referring to Figures 22 through 27, an alternative tool bit assembly 550 will be described below. The bit assembly 550 includes a bit 552, a base collar 554 that is received on the bit 552, and a floating sleeve 556 that is slidably received on the base collar 554. The front end of the floating sleeve 556 tapers inward. This intuitively prevents the user from connecting the floating sleeve back On the cutter head.

As shown in FIG. 22, the cutter head 552 can be of the type including a shank 558 and a first working region 560, and a reduced diameter portion 561 and an annular recess 562 are disposed intermediate the cutter head 552. As an alternative embodiment, as shown in FIG. 23, the cutter head 552' can include a recess at the corner edge of the hexuate handle 558 instead of the annular recess 562.

The base collar 554 includes an inner recess 568 that receives a snap ring 570 therein. The snap ring 570 is designed to be received in the annular recess 562 of the cutter head 552 or in the recess 564 of the optional cutter head 552'. A snap ring 570 secures the base collar to the cutter heads 552, 552'. The pedestal collar 554 includes a reduced diameter portion 572 having an annular recess 574 in its outer surface. A stopper shoulder 576 is provided at the rear end portion of the reduced diameter portion 572. The floating sleeve 556 is movably received on the reduced diameter portion 572. The floating sleeve 556 includes an inner annular groove 578 that receives a snap ring 580 that is received in the annular recess 574. The snap ring 580 limits axial movement of the floating sleeve 556 by a front shoulder 582 and a rear shoulder 584 of the annular groove 578. The rear end portion 586 of the floating sleeve 556 engages with the stop shoulder 576 of the base collar 554. A ring magnet 50 is received at the forward end of the floating sleeve 556 and is designed to magnetize a fastener to retain the fastener to the first working region 560 of the bit 552.

Referring to FIGS. 28-31, the base collar 554' of the bit assembly 550 of FIGS. 22-27 is modified to include an inner shoulder 590 that engages the front shoulder 592 of the reduced diameter portion 561 of the cutter head 552. . The inner shoulder 590 and the snap ring 570 secure the base collar 554' relative to the bit 552, enabling better control of the movement of the floating sleeve 556. Figures 28 and 30 show a modified base collar 554' that engages the optional cutter heads 552, 552'.

Referring to Figures 32 to 34C, a bit holder assembly 800 includes a handle and a handle The body 820 of the 840 is coupled to a floating sleeve 810 that is received on the body 820. The body 820 and the shank 840 are similar to the cutter heads described in U.S. Patent Application Publication No. 2012/0126497 (the '497 application), which is entitled "Small Outer Diameter Quick Release Extension Rod" The sleeve 20 and the link 40 of the clip are incorporated herein by reference. Body 820 includes a receptacle 823 that is configured to receive cutter head 40, as described in more detail in the '497 application. A pair of elongated axial inner grooves 832 are defined around the receptacle 823. A pair of elongate resilient fingers 870 are received in the elongate axial inner grooves 832, respectively. Each of the elongated resilient fingers 870 is sheet-shaped and includes a body portion 871 coupled between a pushed end 872 and an engaging end 873, the engaging end 873 being approximately 45 ± 15 degrees from the body portion 871 The angle extends.

The actuator sleeve 830 is received on the rear end of the handle 840 and the body 820 and is axially movable relative to the body 820 and the handle 840. A return spring 860 is axially retained by a first retaining ring 850 that is fixedly coupled to the handle 840. The return spring 860 biases the actuator sleeve 830 toward a forward position or a locked position. The actuator sleeve 830 is fixedly coupled to a second locating ring 880. The second positioning ring 880 is fixedly coupled to the pushed end 872 of the elongated resilient finger 870. When the actuator sleeve 830 is in its forward position (as shown in Figure 4 of the '497 application), the engagement end 873 of the elongated resilient finger 870 extends into the receptacle 823 for engagement with the cutter head 40 and retaining the cutter head 40 in the receptacle 823. When the actuator sleeve 830 is withdrawn against the force of the return spring 860 (as shown in Figure 6 of the '497 application), the second positioning ring 880 pulls the pushed end 872 of the elongated resilient finger 870 to engage End 873 is withdrawn from receptacle 823, thereby enabling removal of cutter head 40 from receptacle 823.

The inside of the jack 823 is an eject mechanism 890, and the eject mechanism 890 includes a A plunger 891, a magnetic element 892 and a resilient element 893. The magnetic member 892 is disposed on one end of the plunger 891, and the other end of the plunger 891 abuts on one end of the elastic member 893. The other end of the resilient member 893 abuts against the end of the handle 840. The magnetic member 892 faces the front end of the insertion hole 823. When a cutter head is inserted into the insertion hole 823, the elastic member 893 is compressed. When the cutter head is released from the insertion hole 823, the elastic member 893 pushes the plunger 891 toward the open end of the insertion hole, so that the cutter head is at least partially ejected from the insertion hole 823. This helps to remove the cutter head from the jack 823. When the actuator sleeve 830 is withdrawn to release the cutter head, the magnetic element 892 prevents the cutter head from being fully ejected from the receptacle 823.

The outer surface of the body 820 is provided with an elongated annular recess 812. The floating sleeve 810 substantially surrounds the body 820 and supports an annular magnet 814 at the end of the floating sleeve 810. The floating sleeve 810 includes an inner annular groove 816 that receives a retaining member 818 therein. The floating sleeve 810 can be detachably attached to the body 820 by forcing the body 820 into the rear end opening 822 of the floating sleeve 810 until the holder 818 is received in the annular recess 812 of the body 820.

The recess 812 is provided with a front shoulder portion 824 and a rear shoulder portion 826 that allow the floating sleeve 810 to travel in the fore-and-aft direction as indicated by arrow A, while the front and rear shoulder portions 824, 826 are engaged with the retaining member 818. The travel of the floating sleeve 810 is limited. Therefore, the floating sleeve can be between a rear position where the holder 818 is engaged with the rear shoulder portion 826 as shown in FIG. 33A and a front position where the holder 818 and the front shoulder portion 824 are engaged as shown in FIG. 33B. Freely floating, and the ring magnet 814 is engageable with the head of a threaded fastener 819. As shown in FIGS. 34A to 34C, the holder 818 may take the form of a non-elastic member such as a steel collar 818a as shown in FIG. 34A, or an O-shaped elastic ring 818b such as shown in FIG. 34B or as shown in FIG. 34C. C shown The elastic ring 818c is in the form of an elastic member.

Referring to Figure 33C, in an alternative embodiment, the floating sleeve 810 can also be moved rearwardly to a position that positions the retainer 818 behind the rear shoulder 826. In the present embodiment, the retaining member 818 includes an elastic member (such as an O-shaped elastic ring 818b or a C-shaped elastic ring 818c), and the elastic member is pulled when the floating sleeve 810 is pulled axially rearward to the park position. Stretch and stretch. The extended resilient retaining member 818 frictionally engages the outer wall of the body 820 in a sealed manner to retain the floating sleeve 810 in the park position until the user pulls the floating sleeve 810 forward to return to Figures 33A and 33B. One of several floating positions shown. The inner shoulder 877 on the front end of the floating sleeve 810 abuts against the front end 879 of the body 820 to prevent the floating sleeve 810 from moving further rearward beyond the parked position. In the park position, when the actuator sleeve 830 is withdrawn such that the cutter head 40 is ejected from the receptacle 823, the user is more likely to grasp the cutter head 40 and remove the cutter head 40 from the receptacle 823. In another embodiment similar to the embodiment of FIG. 1E, the body 820 can be formed with an annular parking recess located behind the annular recess 812 to more reliably retain the retainer 818 and the floating sleeve 810 in the parked position.

The foregoing description of the embodiments has been provided for purposes of illustration and description. It is not intended to be exhaustive or to limit the creation. The various elements or features of a particular embodiment are generally not limited to that particular embodiment, but can be interchanged and applied to selected embodiments, where not specifically shown or described. It is also possible to make changes in many ways. These changes are not considered to be divorced from the creation, and all such modifications are intended to be included within the scope of this creation.

160‧‧‧knife clip

162‧‧‧ handle

164‧‧‧ Subject

166‧‧‧ jack

168‧‧‧ annular recess

170‧‧‧ Floating sleeve

172‧‧‧ inner annular groove

174‧‧‧ Holder

176‧‧‧Back end opening

177‧‧‧ inner shoulder

178‧‧‧ front shoulder

179‧‧‧ front end

180‧‧‧ rear shoulder

40‧‧‧ cutter head

50‧‧‧ ring magnet

Claims (12)

A cutter head assembly includes: a cutter head having a shaft, the shaft having a first end, a second end, a first working area disposed at the first end, and a first reduced diameter portion The first reduced diameter portion is adjacent to the first working area and disposed between a first shoulder and a second shoulder; and a floating sleeve having a rear portion with a pair of opposing windows, a support a front portion of the magnet, and a pair of spheres, each sphere being disposed in a window of the two windows, wherein the floating sleeve is receivable on the cutter head such that the magnet is adjacent to the first work a region, and the two spheres are received in the first reduced diameter portion to allow the floating sleeve to abut the two spheres at a first position of the two spheres against the first shoulder Moving between a second position of the second shoulder, and wherein the first reduced diameter portion is configured to move the floating sleeve toward the first position to be in a fastener Allowing the magnet to attract the fastening while a working area is engaged Head. The tool bit assembly of claim 1, wherein the floating sleeve further comprises an elastic band surrounding the two balls and retaining the pair of balls in the pair of windows. The tool bit assembly of claim 1 or 2, wherein the second end includes a handle configured to be retained in a bit holder of a fastening tool. The tool bit assembly of claim 1 or 2, wherein the second end comprises a second working area. The tool bit assembly of claim 4, wherein the floating sleeve is optionally receivable on the cutter head such that the magnet is adjacent to the second working area and the two spheres are Accommodating in the first reduced diameter portion to allow the floating sleeve to abut the second shoulder with the two balls at a third position of the two balls against the first shoulder Moving between a fourth position, and the first reduced diameter portion is configured such that the floating sleeve will move toward the fourth position to allow while a fastener is engaged by the second working area The magnet attracts the head of the fastener. The tool bit assembly of claim 4, wherein the shaft further includes a second reduced diameter portion disposed adjacent the second working region and disposed between the third shoulder and the fourth shoulder, and The floating sleeve can optionally be received on the cutter head such that the magnet is adjacent to the second working region and the two spheres are received in the second reduced diameter portion to allow the a floating sleeve moves between a third position of the ball against the third shoulder and a fourth position of the ball against the fourth shoulder, and the second reduced diameter portion is constructed as The floating sleeve will move toward the third position to allow the magnet to attract the head of the fastener while a fastener is engaged by the second working region. The tool bit assembly of claim 6, wherein the shaft includes a third reduced diameter portion disposed between the first reduced diameter portion and the second reduced diameter portion. A tool bit clamp assembly includes: a handle detachably received in a cutter head of a rotary tool; a body coupled to the handle and defining a receptacle having a longitudinal axis The jack is opened at a front end of the main body to detachably receive a cutter head therein; an annular recess defined in an outer surface of the main body and having a rear shoulder a front shoulder and an axial length; a floating sleeve slidably received on the body; an elastic retaining member coupled to the interior of the floating sleeve and having a ratio a short axial length of the annular recess, the retaining member being movably received in the annular recess such that the floating sleeve is capable of abutting the retaining member against the rear shoulder a rearward position axially floating between the retaining member and a front position of the front shoulder; and an annular magnet disposed at a front end of the floating sleeve to magnetize a bit a fastener that is engaged, wherein the floating sleeve is further movable axially rearward from the rear position to a parking position in which the elastic retaining member engages with the main body behind the rear shoulder, such that A cutter head can be removed from the jack. The tool bit clamp assembly of claim 8, wherein the elastic retaining member comprises a C-shaped elastic deformation and frictionally engaged with the main body when the floating sleeve is moved to the parking position. Ring or an O-shaped elastic ring. The tool holder assembly of claim 8 or 9, wherein in order to retain a cutter head in the cutter head assembly, the body includes a snap ring located in the socket, a seat a ball in the jack, a magnet in the jack that holds the bit in the jack and a screw cap with a snap ring, or an elongated axial inner groove and a At least one of the elongated resilient fingers of the axially inner groove, the fingers having a structure that is configured to extend radially inwardly into the receptacle to retain the cutter head therein A front end of the receptacle and a rear end coupled to the actuator sleeve to move the resilient front end of the finger between a locked position and a released position. A cutter head assembly comprising: a handle detachably received in a cutter head of a rotary tool; a body coupled to the handle and defining a receptacle having a longitudinal axis, the receptacle being open a front end of the body to removably receive the cutter head therein; an elongated resilient finger extending axially along the body and having a structure that is configured to extend radially inwardly into the insert a front end of the bore to retain the cutter head in the receptacle; an actuator sleeve attached to the elongated resilient finger such that the elongated resilient finger is in a locked position and loose Moving between open positions in which the front end projects radially inwardly into the receptacle to engage a cutting head, in the released position, the front end is radially outward Moving to allow loosening of the bit from the socket; an annular recess defined in the outer surface of the body and having a rear shoulder, a front shoulder and an axial length; a floating sleeve Slidably received on the body; a retaining member with the floating sleeve Internally connected and having an axial length shorter than the axial length of the annular recess, the retaining member being movably received in the annular recess such that the floating sleeve is capable of retaining a rearward position of the piece against the rear shoulder axially floating between a forward position of the retaining member against the front shoulder; and an annular magnet disposed on the floating sleeve At the front end portion, a fastener that is engaged by a cutter head is magnetized. A tool bit holder assembly for a rotary tool, comprising: a body having a handle at a rear end thereof and a second end formed In order to allow a cutter head to be inserted into the coaxial jack, the outer surface of the body includes a threaded portion at the second end; a threaded cover having an internal thread that engages the threaded portion of the body and An O-ring is secured to the open end of the coaxial jack; and a floating sleeve slidably disposed on the body and including a ring magnet disposed at a front end of the floating sleeve Magnetizing a fastener to retain the fastener to the cutter head.