TW202402476A - Fastener extractor and dislodging tool apparatus - Google Patents

Abstract

A fastener extractor and dislodging tool apparatus includes a torque-tool body, a threaded opening, a plurality of engagement features, and a release bolt. The plurality of engagement features that grips the lateral surface of the stripped fastener is radially positioned around a rotation axis of the torque-tool body. The plurality of engagement features being perimetrically connected around a base of the torque-tool body thus delineating a socket body that removes the stripped fastener. The threaded opening traverses through the base so that the release bolt can be threadedly engaged with the threaded opening, opposite of the plurality of engagement features. When the stripped fastener is jammed within the plurality of engagement features, the release bolt can be threadedly moved into the space between the plurality of engagement features thus dislodging the stripped fastener from the torque-tool body.

Description

Combination of fastener removal tool and fastener withdrawal device

The present invention relates to various tools designed to extract or remove fasteners, such as bolts and nuts. In particular, the present invention relates to a combination of a fastener extraction tool and a fastener extraction device, wherein the fastener extraction tool can extract a damaged fastener without slipping from the damaged fastener, and the fastener extraction device can remove the damaged fastener from the fastener. Remove the damaged fastener from the piece removal tool.

Hexagonal bolts, nuts, screws, and other similar threaded devices are used to securely join multiple workpieces together by combining complementary threads, such as male or female threads. The structure of these types of fasteners usually has: a cylindrical shaft, an external thread on the surface of the shaft, and a head on one end of the shaft. The external thread is combined with a complementary female thread tapped into a hole or nut to secure the fastener and hold the workpieces together. The head of the fastener receives an external torque. The head of the fastener is the means used to rotate or drive the fastener into the female threads. The head of the fastener is made into a special shape to allow an external tool, such as a wrench, to apply torque to the fastener, allowing the fastener to be combined with the female thread to some extent. These fasteners are simple, cheap, and effective, so they are commonly used in modern industry. One of the most common problems with these fasteners, whether they are male or female, is that these external tools, such as wrenches, can slip on their heads. This problem often occurs due to: worn fasteners or tools, rust, over-tightening, or damage to the fastener head. There are various conventional methods for removing fasteners, some of which are more Intrusive. Once the head of a fastener is damaged, more invasive methods must be used to remove the clip-locked fastener. In this case, digging out the fastener with an electric drill is a method that some users often use to remove the fastener. Although this method does work in some situations, it carries a high risk of damaging the internal threads of the screw hole.

The present invention provides a combination of a fastener extraction tool and a fastener withdrawal device, which can reliably eliminate the possibility of slippage between the fastener and the removal tool. The present invention uses a series of keyway structures that are joined together to bite the head of the fastener and effectively transmit torque between the fastener removal tool and the head of the fastener. The present invention also solves common problems with traditional bolt extraction tools, such as the problem that the fastener head or the fastener itself adheres to or adheres to the fastener extraction tool. Furthermore, the present invention allows users to use a fastener extraction device to easily extract residual material or removed fasteners from the fastener removal tool.

In one embodiment, the combination of the fastener extraction tool and the fastener extraction device of the present invention includes: a torque tool body, an opening with threads, a plurality of coupling features, and an extraction bolt, wherein the plurality of coupling features are distributed in the torque The tool body is about an axis of rotation; a plurality of bonding features are connected around a base of the torsion tool body; a threaded opening passes through the base; and the exit bolt can be threaded into the threaded opening and relative to the plurality of bonding features.

In one embodiment, the combination of the fastener extraction tool and the fastener extraction device of the present invention further includes: an attachment part and a combination hole, wherein the center of the attachment part is located on the rotation axis, and the attachment part is along the rotation axis Distribution; the attachment portion is connected to the base of the torque tool body, and the attachment portion is relative to the plurality of binding features; the binding hole passes through the attachment portion along the rotation axis.

In one embodiment, the withdrawal bolt of the present invention includes: a base part, a threaded rod part, and a driving part; wherein the base part and the driving part are opposite to each other across the threaded rod part; the base part is concentrically connected to the threaded rod part One end of the threaded rod; the driving part is concentrically connected to the other end of the threaded rod.

When using the present invention to remove a damaged/worn fastener, the user places the torque tool body around the damaged/worn fastener, allowing a plurality of bonding features to surround the damaged/worn fastener at a considerable length. , and then apply a counterclockwise torque to the torque tool body to rotate and remove the damaged/worn fastener.

When the damaged/worn fastener needs to be removed from the plurality of coupling features, the user combines the threaded rod portion with the threaded opening so that the base portion is located within the plurality of coupling features. The user then applies appropriate clockwise or counterclockwise torque to the exit bolt via the driving portion, and converts the rotational force into a linear force until the damaged/worn fastener is released from the plurality of binding features.

1: Torque tool body

10: Any combination of features

11: Adjacent combination features

12:Exit bolt

13: Basal part

14: Threaded rod

15:Drive Department

16: Attachment Department

17:Combining hole

2:Rotation axis

3:Base

31: Bottom of attachment part

32: Top surface of the torque tool body

4: Opening with thread

5: Combine features

6: First tilt zone

7:Bending part

8: Second tilt zone

81: Near area

82:Far area

Figure 1 is a perspective view showing a torque tool body, a plurality of coupling features, and an exit bolt according to one embodiment of the present invention.

Figure 2 is a top view showing the bottom surface of a torque tool body and an attachment element according to one embodiment of the present invention.

FIG. 3 is a top view showing a torque tool body and a plurality of coupling features according to one embodiment of the present invention, and details thereof are shown in FIG. 4 .

Figure 4 shows details of a plurality of bonding features according to one embodiment of the invention within area A of Figure 3.

FIG. 5 is a side view showing a torque tool body according to an embodiment of the present invention, and a cross-section taken along line AA is shown in FIG. 6 .

FIG. 6 is a sectional view showing a cross section of the torque tool body taken along line AA of FIG. 5 .

Figure 7 is a side view showing an exit bolt according to one embodiment of the present invention.

8 is a cross-sectional view showing a torque tool body, coupling features, and an exit bolt according to one embodiment of the present invention.

FIG. 9 is a top view showing a torque tool body and a plurality of coupling features according to a first other embodiment of the present invention, the details of which are shown in FIG. 10 .

FIG. 10 shows details of a plurality of bonding features according to a first further embodiment of the invention within area A of FIG. 9 , while details within area B are shown in FIG. 11 .

FIG. 11 shows details of a plurality of bonding features according to a first further embodiment of the invention within area B of FIG. 10 .

Figure 12 is a top view showing a torque tool body and a plurality of coupling features according to a second alternative embodiment of the present invention.

First of all, it should be noted that the diagrams used in this specification are only used to illustrate certain embodiments of the present invention, and the scope of the present invention is not limited by these diagrams.

The present invention relates to a fastener removal tool and a fastener removal tool accessory technology. The invention discloses a combination of a fastener extraction tool and a fastener withdrawal device. Remove tool from fastener Broken or worn fasteners are a difficult job. The present invention solves this problem by disclosing an extraction device that is selectively combined with an extraction tool. This extraction device is specifically designed to assist the user in removing any broken or worn fasteners that have become jammed in the fastener removal tool. Furthermore, the present invention is compatible with the male component of the fastener. Fasteners that use male elements, also called male fasteners, use the outer side of the fastener head as a combination location with locking or loosening tools, such as hexagonal bolts and nuts. An example of a male fastener is a bolt with a hexagonal head. Furthermore, the present invention is compatible with male fasteners having right-hand threads and male fasteners having left-hand threads.

Please refer to Figure 1 and Figure 8. The invention includes: a torque tool body 1, an opening 4 with threads, a plurality of coupling features 5, and an exit bolt 12. The torque tool body 1 exerts relevant force on the fastener head through a plurality of coupling features 5 . In the case of a male fastener, the torque tool body 1 is a tubular projection sized so as to enclose the male fastener in an interlocking manner, like a conventional wrench socket. The length, width, and diameter of the torque tool body 1 can be designed to match various sizes of male fasteners. A plurality of coupling features 5 can prevent the fastener from sliding when the fastener is taken out, and they are distributed around a rotation axis 2 of the torque tool body 1, as shown in Figure 3. Furthermore, a plurality of coupling features 5 are connected around a base 3 of the torque tool body 1 to engage the side surface of the fastener head. The plurality of coupling features 5 can transfer torque to the male fastener by preventing slippage between the torque tool body 1 and the fastener head. A threaded opening 4 extends through the base 3 as an attachment feature for the exit bolt 12 . Again, the exit bolt 12 is threaded into the threaded opening 4 and relative to the plurality of engagement features 5 . Therefore, when the damaged/worn fastener is taken out and plugged into the plurality of coupling features 5, the exit bolt 12 can push or withdraw the damaged/worn fastener from the plurality of coupling features 5.

Please refer to Figure 1 to Figure 3. The torque tool body 1 extends outwardly from a plurality of engagement features 5 . This results in a socket-like structure in which a plurality of binding features 5 are distributed around the axis of rotation 2 The inner surface of the torque tool body 1 is like a conventional wrench socket. Furthermore, a wrench handle can be connected to the external side of the torque tool body 1 through a wrench handle attachment portion. In relation to both the wrench socket and the wrench handle attachment, each of the plurality of engagement features 5 extends along the torque tool body 1 for a specific length, thereby defining an internal space within the torque tool body 1 . This internal space serves as a receiving cavity for the fastener head, and a plurality of coupling features 5 can engage the side surface of the fastener head.

Traditional socket wrenches transmit most of the torque to the male fastener via the corners on the side of the fastener head. Over time, the deterioration of the side edges reduces the efficiency of transferring torque from the socket wrench to the fastener head and causes slippage. The present invention solves the above problem by shifting the torque transmission point to the side of the fastener head. This is achieved by using a plurality of combined features 5. Each of the plurality of binding features 5 is positioned to engage or bite the side of the fastener head, rather than the side edges. In this way, the appropriate amount of torque can be transmitted to the fastener head to rotate the fastener, and finally remove the damaged/worn fastener.

Please refer to Figure 3 to Figure 4. In a preferred embodiment of the present invention, the cross section of each of the plurality of bonding features 5 includes: a first inclined area 6 , a bent portion 7 , and a second inclined area 8 . Specifically, the first inclined area 6 is connected to one end of the curved portion 7 ; the second inclined area 8 is connected to the other end of the curved portion 7 ; the first inclined area 6 and the second inclined area 8 are opposite to each other across the bent portion 7 . An engaging edge is then formed between a pair of joining features 5 or within one joining feature 5 . This way, the biting blade can cut into the head of the fastener when removing a damaged/worn fastener. A top surface 32 of the torque tool body 1 is located between the outer surface of the base 3 and the plurality of coupling features 5, wherein the top surface 32 is a plane. There is a transition edge between the top surface 32 of the base 3 and the plurality of binding features 5, wherein the transition edge is a chamfered edge or a curved edge, and the transition edge faces the opening 4 with threads. In one implementation of the invention For example, the first inclined area 6 and the second inclined area 8 are collinear with each other or are concave inwards, so the first inclined area 6 and the second inclined area 8 form an acute angle to the curved portion 7 .

In a preferred embodiment of the present invention, a plurality of binding features 5 are equidistantly distributed on the torsion tool body 1 to form a closed shape as shown in Figures 3 and 4. In the present invention, the lengths of the first inclined section 6, the bent section 7, and the second inclined section 8 can all be changed; the angles between the first inclined section 6, the bent section 7, and the second inclined section 8 can also be changed to Form a sharp tooth-like structure. In order to plan this closed shape, an arbitrary joining feature 10 and an adjacent joining feature 11 are defined within a plurality of joining features 5 . The arbitrary combination feature 10 is any one of the plurality of combination features 5 , and the adjacent combination feature 11 is directly adjacent to the arbitrary combination feature 10 . In more detail, the first sloped region 6 of any bonding feature 10 is connected to the second sloped region 8 of an adjacent bonding feature 11 at an obtuse angle. In other words, the angle between the adjacent first inclined area 6 and the second inclined area 8 is an obtuse angle, and thus defines the shape of the biting edge. As stated above, the present invention can be designed to accommodate a variety of fastener head shapes. This can be achieved by changing the number of binding features 5. The number of binding features 5 generally corresponds to the number of sides of the fastener head. For example, a pentagonal fastener head has 5 sides. The user must use the embodiment of the invention with 5 binding features 5 to remove a male fastener with 5 side fastener heads. In a preferred embodiment of the present invention, the number of the plurality of binding features 5 may be 18, 12, 6, or 4.

Please refer to Figure 9 to Figure 11. In a first other embodiment of the present invention, the cross-section of each of the plurality of bonding features 5 includes: a first inclined area 6, a bending portion 7, and a second inclined area 8; the second inclined area 8 It also includes a near area 81 and a far area 82 . More specifically, the first inclined area 6 is connected to one end of the curved portion 7; one end of the proximal area 81 of the second inclined area 8 is connected to the other end of the curved portion 7; the first inclined area 6 and the second inclined area 8 are The near areas 81 are opposite to each other across the bent portion 7 ; the far area 82 of the second inclined area 8 is connected to the other end of the near area 81 of the second inclined area 8 and is opposite to the bent portion 7 . So, An engaging edge is formed between the proximal area 81 of the second inclined area 8 and the distal area 82 of the second inclined area 8 . This way, the biting blade can cut into the head of the fastener when removing a damaged/worn fastener. Furthermore, the angle between the proximal area 81 of the second inclined area 8 and the distal area 82 of the second inclined area 8 is an obtuse angle, and thereby defines the shape of the biting edge.

In a first other embodiment of the present invention, a plurality of bonding features 5 are equidistantly distributed on the torsion tool body 1 to form a closed shape as shown in FIGS. 9 to 11 . In this embodiment, the lengths of the first inclined section 6, the bent section 7, and the second inclined section 8 can be changed; the angles between the first inclined section 6, the bent section 7, and the second inclined section 8 can also be changed to Form a sharp tooth-like structure. In order to plan this closed shape, an arbitrary joining feature 10 and an adjacent joining feature 11 are defined within a plurality of joining features 5 . The arbitrary combination feature 10 is any one of the plurality of combination features 5 , and the adjacent combination feature 11 is directly adjacent to the arbitrary combination feature 10 . More specifically, when the near region 81 and the far region 82 are adjacent to each other and at an obtuse angle relative to the adjacent bonding feature 11, the first inclined region 6 of any bonding feature 10 is connected to the far region of the adjacent bonding feature 11 at a right angle. 82.

In some of the first other embodiments of the invention, the angle of the first inclined zone 6 and the far zone 82 is equal to the angle of the far zone 82 and the near zone 81 , wherein the far zone 82 is along the direction of the fastener head. Side surface distribution. Furthermore, the first inclined area 6, the far area 82, and the near area 81 define a trapezoidal shape.

Please refer to Figure 12. In a second other embodiment of the present invention, the cross section of each of the plurality of bonding features 5 includes: a first inclined area 6 , a bent portion 7 , and a second inclined area 8 . The curved portion 7 further includes: a first area, a second area, a third area, and a fourth area. More specifically, the first area is adjacent to the second area; the third area is adjacent to the second area and relative to the first area; and the fourth area is adjacent to the third area and relative to the second area. Therefore, one end of the first inclined area 6 is connected to the first area; one end of the second inclined area 8 is connected to the fourth area, wherein the first inclined area 6 and the second inclined area 8 are separated by the curve. Parts 7 are opposite to each other. Furthermore, the first inclined area 6 and the second inclined area 8 are arranged in a straight line with each other, and the curved portion 7 protrudes toward the rotation axis 2 . Thus, an engaging edge is formed in the curved portion 7 . This way, the biting blade can cut into the head of the fastener when removing a damaged/worn fastener. Furthermore, the first area, the second area, the third area, and the fourth area may be designed as a plurality of straight lines, a plurality of curved areas, or a combination of straight lines and curved areas.

Moreover, in the second other embodiment of the present invention, a plurality of coupling features 5 are arranged at equal distances on the torque tool body 1 to form a closed shape as shown in FIG. 12 . The lengths of the first inclined section 6, the bent section 7, and the second inclined section 8 can all be changed; the angles between the first inclined section 6, the bent section 7, and the second inclined section 8 can also be changed to form sharp teeth. shape structure. In order to plan this closed shape, an arbitrary joining feature 10 and an adjacent joining feature 11 are defined within a plurality of joining features 5 . The arbitrary combination feature 10 is any one of the plurality of combination features 5 , and the adjacent combination feature 11 is directly adjacent to the arbitrary combination feature 10 . More specifically, the first sloped region 6 of any bonding feature 10 is connected to the second sloped region 8 of an adjacent bonding feature 11 at an obtuse angle. In other words, the angle between adjacent first slanted areas 6 and second slanted areas 8 is an obtuse angle and defines the connection point between a pair of joining features 5 as an engaging edge within the bend 7 .

In some embodiments of the present invention, the plurality of bonding features 5 may taper from the top surface 32 toward the threaded opening 4 , wherein the diameter of the plurality of bonding features 5 adjacent the threaded opening 4 is smaller than that adjacent the receiving cavity or The diameter of the plurality of bonding features 5 adjacent the top surface 32 .

The present invention also includes an attachment feature that allows an external torque tool to be attached to the torque tool body 1 to increase the torque applied to a broken/worn fastener. Please refer to Figure 5 and Figure 6. The present invention further includes: an attachment portion 16 and a combination hole 17, which allows an external tool to be attached to the torque tool body 1, such as an open-end wrench, a closed-end wrench, a combination wrench, an adjustable wrench, or a socket wrench. The center of the attachment portion 16 is located on the rotation axis 2, and the attachment portions 16 are distributed along the rotation axis 2 so that the rotation axis of the torque tool Align with axis of rotation 2. Furthermore, the attachment portion 16 is connected to the base 3 of the torque tool body 1 and relative to the plurality of coupling features 5 . In the preferred embodiment of the present invention, the attachment portion 16 has a hexagonal structure; the diameter of the attachment portion 16 is slightly larger than the diameter of the base portion 3 of the torque tool body 1 . However, depending on the size, manufacturing method and design of the base, the diameter of the attachment portion 16 may be smaller than the diameter of the base 3 . The coupling hole 17 passes through the attachment portion 16 along the rotation axis 2 . The coupling hole 17 is shaped to accept the male attachment element of a socket wrench. Since most socket wrenches use a square male attachment element, the shape of the coupling hole 17 is preferably square. In other embodiments of the present invention, the design and shape of the attachment portion 16 and the combination hole 17 can be changed to adapt to different torque tools and different attachment means. For example, the shape of the coupling hole 17 may be, but is not limited to, square or cylindrical. In other embodiments of the present invention, the outer surface of the attachment portion 16 may be surface-gripping treated, such as knurling or other treatments, to increase the friction between the torque tool body 1 and any driving embodiment.

Please refer to Figure 2 and Figure 6. A bottom surface 31 of the attachment portion 16 is gradually sloped away from the coupling hole 17 so that a plurality of coupling features 5 can be hammered into a damaged/worn fastener without damaging the coupling hole 17 . In other words, the height of the attachment portion 16 near the coupling hole 17 is slightly greater than the height of the attachment portion 16 near the outer surface, so that the bottom surface 31 gradually slopes away from the coupling hole 17 .

Please refer to Figure 7. The withdrawal bolt 12 for withdrawing from damaged/worn fasteners includes: a base portion 13, a threaded rod portion 14, and a driving portion 15. More specifically, the base portion 13 and the driving portion 15 face each other with the threaded rod portion 14 interposed therebetween. In a preferred embodiment of the present invention, the cross-section of the threaded rod 14 may be circular. The base part 13 , the threaded rod part 14 and the driving part 15 are coaxially arranged with each other, so that the base part 13 is concentrically connected to one end of the threaded rod part 14 , and the driving part 15 is concentrically connected to the other end of the threaded rod part 14 . Alternatively, a hole can be penetrated into the side of the drive portion 15 to allow a torque to be applied to the lever handle It can be combined with the hole, and when the exit bolt 12 is combined with the combination hole 17, torque is applied to the exit bolt 12. This hole can be of any shape, including round, square, or any other geometric shape.

In order to achieve a connection between the threaded opening 4 and the exit bolt 12 , the threaded shank 14 is designed to fit into the receiving thread (female thread) of the threaded opening 4 . When the broken/worn fastener needs to be withdrawn, the threaded shaft 14 is combined with the threaded opening 4. Thus, the base portion 13 is located within the plurality of coupling features 5 and the driving portion 15 is located away from the torque tool body 1 . The user can apply appropriate clockwise or counterclockwise torque to the exit bolt 12 via the driving part 15, and convert the rotational force into a linear force until the broken/worn fastener is released from the socket. Due to the position of the base 13 within the plurality of bonding features 5, applying linear force can cause the base 13 to contact and push out a broken/worn fastener. In a preferred embodiment of the present invention, the driving portion 15 has a hexagonal configuration. In other embodiments of the present invention, the driving part 15 may be, but is not limited to, a square configuration, a circular configuration, or other configurations that may be adapted to different socket wrenches or similar tools that apply rotational force. The base portion 13 can be made into a cylindrical structure, a square structure, a hexagonal structure, or other structures desired by the user/manufacturer. The threaded shank 14 may be any shaped shank configuration, which may be, but is not limited to, a semi-circular configuration, a semi-square configuration, or any other geometric shank configuration for which male threads may be used.

In order to use the present invention to remove a broken/worn fastener, the torque tool body 1 is placed around the broken/worn fastener so that the plurality of bonding features surround the broken/worn fastener at a considerable length. The user applies a counterclockwise torque to the torque tool body 1 to rotate and remove the damaged/worn fastener. When torque is applied to the torque tool body 1, the plurality of binding features 5 will "bite into" the sides of the fastener head and thereby rotate the fastener. The present invention is designed to partially or Fully bonded to worn fastener heads. Each of the plurality of joining features 5 of the present invention has an engaging edge. Through a plurality of coupling features 5, the present invention can overcome the problem of fastener head sliding.

The present invention has been described above with examples. However, it should be understood that modifications or changes to these embodiments are still included in the scope of the present invention without departing from the spirit or scope of the present invention.

1: Torque tool body

5: Combine features

12:Exit bolt

16: Attachment Department

32: Top surface of the torque tool body

Claims (7)

A combination of a fastener removal tool and a fastener withdrawal device, which includes: a torque tool body; an opening having a thread; A plurality of coupling features; and an exit bolt, wherein the plurality of coupling features are distributed around a rotation axis of the torsion tool body; The plurality of bonding features are connected around a base of the torque tool body; The torsion tool body extends outwardly from a cross-section of the plurality of bonding features; The threaded opening passes through the base; The exit bolt is threaded in the threaded opening and relative to the plurality of engagement features; The exit bolt includes: a base portion, a threaded rod portion and a driving portion; The base part and the driving part are opposite to each other across the threaded rod part; The base part is concentrically connected to the threaded rod part; The driving part is concentrically connected to the other end of the threaded rod part; The threaded rod is combined with the threaded opening; The base is located adjacent to the plurality of binding features; The driving part is located away from the torque tool body. The combination of a fastener extraction tool and a fastener withdrawal device as described in item 1 of the application scope, wherein the cross section of each of the plurality of combination features includes: a first inclined area, a bending portion and a third Two inclined areas; the first inclined area is connected to one end of the curved part; the second inclined area is connected to the other end of the curved part; the first inclined area and the second inclined area are opposite to each other across the bent part. The combination of a fastener extraction tool and a fastener withdrawal device as described in item 2 of the application scope, wherein the plurality of combination features include: an arbitrary combination feature and an adjacent combination feature; the first inclined area of the arbitrary combination feature The second sloped area is connected to the adjacent bonding feature at an obtuse angle. The combination of a fastener extraction tool and a fastener withdrawal device described in item 1 of the application scope further includes: an attachment part and a combination hole, wherein the center of the attachment part is located on the rotation axis, and the attachment part The attachment portion is distributed along the rotation axis; the attachment portion is connected to the base portion of the torque tool body, and the attachment portion is relative to the plurality of coupling features; the coupling hole passes through the attachment portion along the rotation axis. The combination of a fastener extraction tool and a fastener withdrawal device as described in item 1 of the application scope, wherein the driving part is hexagonal. The combination of a fastener extraction tool and a fastener withdrawal device as described in item 1 of the application scope, wherein the driving part is square. The combination of a fastener extraction tool and a fastener withdrawal device as described in item 1 of the application scope, wherein the driving part is circular.

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