A knob tool for disassembling and assembling medium-pitch screw sets in screw holes

Abstract

The present invention discloses a knob for the installation and removal of middle-thread sets in screw holes, which includes a first tool bar, a second tool bar and a torsion arm. Both the first tool bar and the second tool bar have a fixed end and a starting end of the tool. The first tool bar and the second tool bar are respectively vertically fixed at both ends of the torsion arm through their respective fixed ends. The starting ends of the first tool bar and the second tool bar face in opposite directions. The starting ends of the first tool bar and the second tool bar are respectively provided with a first tool and a second tool for inserting into the starting groove of the tooth sleeve. There is a width difference between the first tool and the second tool. The width of the first tool and the width of the second tool are respectively greater than or equal to the outer diameter of the first tool bar and the outer diameter of the second tool bar. Both the first tool bar and the second tool bar are cylindrical. During application, the first tool bar and the second tool bar are used as the cranks for each other's rotation. Its advantages are as follows: it can simultaneously meet the installation and removal of two specifications of tooth sleeves; the operation is stable and the installation and removal of the tooth sleeve can be successfully completed; it does not abrade the hand and will not cause harm to the hand even after long-term repeated operations; it is small in size and convenient to carry.

Description

Technical Field

[0001] The present invention relates to a knob used for the disassembly and assembly of middle-thread screw sets in screw holes, belonging to the technical field of screw tightening and loosening tools. Background Art

[0002] In the field of detection technology, there is a type of mounting surface (plate) of a detection object that needs to be temporarily fixed by screw connection. To improve the universality of the mounting surface (plate), the screw holes provided thereon are generally relatively large. When installing, a dental sleeve with an inner diameter adapted to the size of the screw of the installation object needs to be selected, and then the dental sleeve is screwed into the screw hole of the mounting surface (plate). One end of the dental sleeve is provided with a starting slot for inserting a screwdriver for rotation. The traditional method is to use an ordinary screwdriver or a self-made blade to insert into the starting slot to tighten or loosen the dental sleeve to complete the disassembly and assembly of the dental sleeve.

[0003] One of the defects of the ordinary screwdriver used in the traditional method for disassembling and assembling dental sleeves is that it is very difficult to find a screwdriver with a suitable specification during use. Especially when the diameter of the dental sleeve is more than 10 mm, the width of the general screwdriver cannot reach this specification.

[0004] Another defect of the ordinary screwdriver used in the traditional method for disassembling and assembling dental sleeves is that it is inconvenient and uncomfortable to use. On the one hand, the shank and the handle of the screwdriver are relatively long. When screwing the dental sleeve into the screw hole, the hand-held part is too far from the dental sleeve. When operating quickly, it is easy to cause the dental sleeve to be unstable, and it is easy to skew when entering the hole, resulting in misaligned threads, which not only cannot continue to be screwed in, affecting the work progress, but also damaging the threads of the dental sleeve and the screw hole; on the other hand, repeatedly screwing the handle of the screwdriver for a long time is likely to cause hand injuries.

[0005] The third defect of the ordinary screwdriver used in the traditional method for disassembling and assembling dental sleeves is that the pre-tightening force of the dental sleeve installation cannot be controlled. If it is too tight, it is difficult to disassemble; if it is too loose, the connection fails, affecting the detection result.

[0006] Our company is engaged in motor vehicle detection. There are a large number of screw holes that need to be installed with dental sleeves on the large vibration table of the vibration detection tooling. The above defects make the work of disassembling and assembling dental sleeves on the large vibration table very time-consuming and laborious. There is an urgent need to develop a professional instrument specifically for the disassembly and assembly of dental sleeves to overcome the above defects.

[0007] Since the screw holes that need to be installed with dental sleeves on the vibration table used for motor vehicle detection are generally of two specifications, large and small, therefore, the present invention conducts research on the instruments for the disassembly and assembly of dental sleeves for these two specifications of screw holes.

[0008] During the research process, we closely followed the relevant research in this field. After retrieval, no patent documents highly similar to the present invention were found. Summary of the Invention

[0009] The technical problem to be solved by the present invention is to provide an instrument for easily and efficiently disassembling and assembling dental sleeves.

[0010] In view of the above problems, the technical solution proposed by the present invention is as follows:

[0011] A knob for disassembling and assembling the middle thread set of a screw hole, comprising a first cutter bar, a second cutter bar and a torsion arm. Both the first cutter bar and the second cutter bar have a fixed end and a starting end. The first cutter bar and the second cutter bar are respectively vertically fixed at both ends of the torsion arm through their respective fixed ends. The starting ends of the first cutter bar and the second cutter bar face in opposite directions. The starting ends of the first cutter bar and the second cutter bar are respectively provided with a first starting tool and a second starting tool for inserting into the starting tool groove of the tooth sleeve. There is a width difference between the first starting tool and the second starting tool. The widths of the first starting tool and the second starting tool are respectively greater than the outer diameters of the first cutter bar and the second cutter bar.

[0012] Further, the widths of the first starting tool and the second starting tool are respectively equal to the outer diameters of the first cutter bar and the second cutter bar.

[0013] Further, both the first cutter bar and the second cutter bar are cylindrical. During application, the first cutter bar and the second cutter bar are used as the cranks for each other's rotation.

[0014] Further, a first rotating sleeve and a second rotating sleeve are respectively sleeved on the outer peripheries of the first cutter bar and the second cutter bar. The first rotating sleeve and the second rotating sleeve can respectively rotate relative to the first cutter bar and the second cutter bar; the outer diameters of the first rotating sleeve and the second rotating sleeve are respectively less than or equal to the widths of the first starting tool and the second starting tool.

[0015] Further, the outer peripheries of the first cutter bar and the second cutter bar near the starting ends respectively have a first limiting flange and a second limiting flange. The first rotating sleeve is restricted on the outer periphery of the first cutter bar between the first limiting flange and the torsion arm, and the second rotating sleeve is restricted on the outer periphery of the second cutter bar between the second limiting flange and the torsion arm.

[0016] Further, both ends of the torsion arm respectively have a first rod hole and a second rod hole. The fixed ends of the first cutter bar and the second cutter bar respectively pass through the first rod hole and the second rod hole and are fixed by welding.

[0017] Further, the fixed ends of the first cutter bar and the second cutter bar are respectively provided with internal hexagonal holes for inserting the hexagonal head of a torque wrench to twist.

[0018] Further, the fixed ends of the first cutter bar and the second cutter bar are both provided with a rotator, and the rotator includes a rotatable rotating body.

[0019] Further, the rotator further includes a hexagonal rubber head that can be inserted into and pulled out of the hexagonal socket, a metal sleeve installed at the center of the hexagonal rubber head, and a pin that can rotate within the socket of the metal sleeve. The bottom center of the rotating body has a threaded blind hole. The bottom end of the pin has a limiting handle larger than the diameter of the pin, and the upper end of the pin has an external thread. The central part of the hexagonal rubber head has a through hole that can insert and fix the metal sleeve. The upper end of the pin with the external thread passes through the bottom of the through hole and the bottom of the socket of the metal sleeve in sequence, passes through the metal sleeve, and then is screwed into the threaded blind hole at the bottom of the rotating body to be fixedly connected to the rotating body.

[0020] Further, one side of the torsion arm has a screwdriver three for use in the initial stage of screwing the dental brace from outside the screw hole into the screw hole. The width of the screwdriver three is greater than the outer diameter of the dental brace, and the cutting edge of the screwdriver three is an arc-shaped cutting edge. Beneficial effects

[0021] 1. It can simultaneously meet the installation and disassembly of two specifications of dental braces;

[0022] 2. The operation is stable, and the installation and disassembly of the dental brace can be quickly completed;

[0023] 3. It does not abrade the hand, and repeated operation for a long time will not cause harm to the hand;

[0024] 4. The structure is simple, the cost is low, and it is convenient for production and promotion;

[0025] 5. It is small in size and convenient to carry. Description of the drawings

[0026] Figure 1 Is a three-dimensional schematic diagram of the knob device described in the first embodiment;

[0027] Figure 2 Is a three-dimensional schematic diagram of the knob device described in the second embodiment;

[0028] Figure 3 Is an exploded schematic diagram of the knob device described in the second embodiment;

[0029] Figure 4 Is a three-dimensional schematic diagram of the knob device described in the third embodiment;

[0030] Figure 5 Is a three-dimensional schematic diagram of the knob device described in the third embodiment ready to be finally tightened with a torque wrench;

[0031] Figure 6 Is a three-dimensional schematic diagram of the knob device described in the fourth embodiment;

[0032] Figure 7 Is an exploded schematic diagram of the knob device described in the fourth embodiment;

[0033] Figure 8 Is an exploded schematic diagram of the rotator described in the fourth embodiment;

[0034] Figure 9 It is a three-dimensional schematic diagram of the knob device described in the fifth embodiment.

[0035] In the figure: 1. The first cutter bar; 101. The first cutter; 102. The first rotating sleeve; 103. The first limiting flange; 2. The second cutter bar; 201. The second cutter; 202. The second rotating sleeve; 203. The second limiting flange; 3. The third cutter; 301. The arc-shaped cutting edge; 4. The torsion arm; 401. The first rod hole; 402. The second rod hole; 5. The hexagon socket; 6. The rotator; 601. The rotating body; 602. The blind threaded hole; 603. The hexagon rubber head; 6031. The through hole; 604. The metal sleeve; 605. The pin; 6051. The limiting handle; 7. The torque wrench; 701. The hexagon head; 8. The tooth sleeve; 801. The cutter groove; 9. The screw hole. Specific embodiments

[0036] The present invention will be further described below in conjunction with the embodiments and the drawings: Embodiment 1

[0037] As shown in Figure 1 (refer to Figure 5 ), a knob device for installing and removing the middle tooth sleeve in a screw hole includes a first cutter bar 1, a second cutter bar 2 and a torsion arm 4. Both the first cutter bar 1 and the second cutter bar 2 have a fixed end and a cutter end. The first cutter bar 1 and the second cutter bar 2 are respectively vertically fixed at both ends of the torsion arm 4 through their respective fixed ends. The cutter ends of the first cutter bar 1 and the second cutter bar 2 face in opposite directions. The cutter ends of the first cutter bar 1 and the second cutter bar 2 are respectively provided with a first cutter 101 and a second cutter 201 for inserting into the cutter groove 801 of the tooth sleeve 8. There is a width difference between the first cutter 101 and the second cutter 201. The widths of the first cutter 101 and the second cutter 201 are respectively greater than the outer diameters of the first cutter bar 1 and the second cutter bar 2. In this way, the knob device has two cutters of different sizes and can be used for installing and removing two different specifications of tooth sleeves 8. Generally, there are only 2 specifications of screw holes 9 on the installation panel of the tooling, and there are also only two specifications of outer diameters of the tooth sleeves 8. Due to the design that the cutter ends of the first cutter bar 1 and the second cutter bar 2 face in opposite directions, when the first cutter bar 1 operates downward, the upward second cutter bar 2 will not form an operation obstacle. Since the first cutter bar 1 and the second cutter bar 2 are to enter the screw hole 9 with their respective cutters, the outer diameters of the first cutter bar 1 and the second cutter bar 2 are designed to be equal to or less than the widths of their respective cutters. In this way, integrating two different specifications of cutters on a relatively short torsion arm 4 can not only meet the installation and removal requirements of two specifications of tooth sleeves 8, but also be convenient for grasping and operating, improve work efficiency, and be convenient for carrying. In addition, the knob device has a simple structure and low manufacturing cost, which is convenient for popularization and application. Embodiment 2

[0038] As shown in Figure 2 , 3 (refer toFigure 5 ), both the tool bar 1 and the tool bar 2 are cylindrical. In application, the tool bar 1 and the tool bar 2 are used as the cranks for each other's rotation. In this way, the torsion arm 4 can be used as the force arm. When the tool bar 1 is docked with the dental sleeve 8 to rotate the dental sleeve 8, the tool bar 2 can be used as the crank to push it to rotate around the tool bar 1 through the torsion arm 4. Conversely, when the tool bar 2 is docked with the dental sleeve 8 to rotate the dental sleeve 8, the tool bar 1 can be used as the crank to push it to rotate around the tool bar 1 through the torsion arm 4, thus making the operation of loosening or tightening the dental sleeve 8 easier.

[0039] Furthermore: A rotating sleeve 102 and a rotating sleeve 202 are respectively sleeved on the outer circumferences of the tool bar 1 and the tool bar 2. The rotating sleeve 102 and the rotating sleeve 202 can respectively rotate relative to the tool bar 1 and the tool bar 2; the outer diameter of the rotating sleeve 102 and the outer diameter of the rotating sleeve 202 are respectively less than or equal to the width of the starting tool 101 and the width of the starting tool 201. In this way, when in use, the rotating sleeve 102 or the rotating sleeve 202 can be pinched by hand to push the tool bar 1 or the tool bar 2 to rotate without hurting the hand, and even if the operation is repeated for a long time, the hand will not be injured.

[0040] To solve the problems of the limit and installation of the tool bar 1 and the tool bar 2, the outer circumferences of the tool bar 1 and the tool bar 2 near the starting tool end respectively have a limit flange 103 and a limit flange 203. The rotating sleeve 102 is restricted to the outer circumference of the tool bar 1 between the limit flange 103 and the torsion arm 4, and the rotating sleeve 202 is restricted to the outer circumference of the tool bar 2 between the limit flange 203 and the torsion arm 4. Rod holes 401 and 402 are respectively provided at both ends of the torsion arm 4. The fixed ends of the tool bar 1 and the tool bar 2 respectively pass through the rod holes 401 and 402 and are fixed by welding. Embodiment Three

[0041] As Figure 4 、 5 shown, the difference from Embodiment One is that: The fixed ends of the tool bar 1 and the tool bar 2 are respectively provided with internal hexagonal holes 5 for the hexagonal head 701 of the torque wrench 7 to be inserted and twisted. During the installation process of the dental sleeve 8, when the dental sleeve 8 is tightened to a certain extent, the hexagonal head 701 of the torque wrench 7 can be inserted into the internal hexagonal hole 5 at the fixed end of the tool bar 1 or the fixed end of the tool bar 2, and the torque wrench 7 is used to rotate the lower tool bar 1 or the tool bar 2. When the torque reaches the set value, it is okay. In this way, the pre-tightening force between the installed dental sleeve 8 and the screw hole has a suitable standard value. The pre-tightening force at this standard value not only meets the installation connection requirements but also ensures that the dental sleeve 8 can be disassembled smoothly. Embodiment Four

[0042] As Figure 6 、 7 、8 shown (refer to Figure 5), which is different from the above embodiments in that: Rotators 6 are provided at the fixed ends of the first tool shank 1 and the second tool shank 2. The rotator 6 includes a rotatable body 601. It also includes a hexagonal rubber head 603 that can be inserted into and pulled out of the hexagonal hole 5, a metal sleeve 604 installed at the center of the hexagonal rubber head 603, and a pin 605 that can rotate within the sleeve hole of the metal sleeve 604. A threaded blind hole 602 is provided at the center of the bottom of the rotatable body 601. The bottom end of the pin 605 has a limiting handle 6051 larger than the diameter of the pin 605, and the upper end of the pin 605 has an external thread. A through hole 6031 for inserting and fixing the metal sleeve 604 is provided at the center of the hexagonal rubber head 603. The upper end of the pin 605 with an external thread passes through the bottom of the through hole 6031, the bottom of the sleeve hole of the metal sleeve 604, and then passes through the metal sleeve 604 and is screwed into the threaded blind hole 602 at the bottom of the rotatable body 601 to be fixedly connected to the rotatable body 601. In this way, the rotatable body 601 rotates in cooperation with the metal sleeve 604 through the pin 605, and the rotatable body 601 and the hexagonal rubber head 603 are restricted together by the limiting handle 6051 of the pin 605. During application, pinch the rotatable body 601 with fingers so that the lower first tool shank 1 or the second tool shank 2 can rotate while the rotatable body 601 does not rotate. In this way, on the one hand, the lower first tool shank 1 or the second tool shank 2 can be stabilized, so that the first tool shank 1 or the second tool shank 2 rotates coaxially with the mating dental sleeve 8. On the other hand, it does not hurt the hand. When cooperating with the first rotating sleeve 102 and the second rotating sleeve 202 in the first embodiment for two-handed operation, even if working for a long time, it will not hurt the hand. When a torque wrench 7 needs to be used, pull out the hexagonal rubber head 603 of the rotator 6 from the hexagonal hole 5. When a large number of dental sleeves 8 need to be installed, all the dental sleeves 8 to be installed can be first screwed to the extent that a torque wrench 7 is needed, and then the hexagonal rubber head 603 of the rotator 6 is pulled out from the hexagonal hole 5, and the torque wrench 7 is used to uniformly perform the final tightening procedure on all the dental sleeves 8. In this way, it is only necessary to pull out the hexagonal rubber head 603 of the rotator 6 from the hexagonal hole 5 once. Embodiment Five

[0043] As Figure 9 shown (refer to Figure 5), which is different from the fourth embodiment in that: on one side of the torsion arm 4, there is a third knife 3 for use in the initial stage of screwing the dental appliance 8 from outside the screw hole 9 into the screw hole 9. The width of the third knife 3 is greater than the outer diameter of the dental appliance 8, and the cutting edge of the third knife 3 is an arc-shaped cutting edge 301. Since the widths of the above-mentioned first knife 101 and second knife 201 are exactly the same as the width of the butt-jointed dental appliance 8, and are restricted by the wall of the screw hole 9 inside the screw hole 9, the first knife 101 and the second knife 201 will not slip out of the knife slot 801 of the dental appliance 8. However, when one end of the knife slot 801 of the dental appliance 8 is still outside the screw hole 9, if the first knife 101 and the second knife 201 are inserted, they are likely to slip out from one side of the dental appliance 8. Therefore, in this embodiment, the third knife 3 is specifically provided, and the width of the third knife 3 is designed to be much larger than the outer diameter of the dental appliance 8, so that it is not easy to slip out of the knife slot 801. At the same time, the cutting edge of the third knife 3 is set as the arc-shaped cutting edge 301. During application, a part of the arc-shaped cutting edge 301 is sunk into the inner hole of the dental appliance 8, making it not easy to slide. In this way, the problem that the knife is likely to slip out during the initial stage of screwing the dental appliance 8 from outside the screw hole 9 into the screw hole 9, resulting in the failure to smoothly complete the installation of the dental appliance 8 into the hole, is conveniently and well solved.

[0044] The above embodiments are only used to describe the present invention more clearly and should not be regarded as limiting the protection scope covered by the present invention. Any modification in an equivalent form should be regarded as falling within the protection scope covered by the present invention.

Claims

1. A knob for assembling and disassembling the middle thread set in a screw hole, characterized in that: It includes a first tool shank (1), a second tool shank (2) and a torsion arm (4). Both the first tool shank (1) and the second tool shank (2) have a fixed end and a cutting end. The first tool shank (1) and the second tool shank (2) are respectively vertically fixed to both ends of the torsion arm (4) through their respective fixed ends. The cutting ends of the first tool shank (1) and the second tool shank (2) face in opposite directions. The cutting ends of the first tool shank (1) and the second tool shank (2) are respectively provided with a first cutter (101) and a second cutter (201) for inserting into the cutting groove (801) of the dental sleeve (8). There is a width difference between the first cutter (101) and the second cutter (201). The width of the first cutter (101) and the width of the second cutter (201) are respectively greater than the outer diameter of the first tool shank (1) and the outer diameter of the second tool shank (2); Inner hexagonal holes (5) are respectively provided at the fixed ends of the first tool shank (1) and the second tool shank (2) for the hexagonal head (701) of the torque wrench (7) to be inserted and turned; Rotators (6) are arranged at the fixed ends of both the first tool shank (1) and the second tool shank (2). The rotator (6) includes a rotatable body; The rotator (6) also includes a hexagonal rubber head (603) that can be inserted into and pulled out of the inner hexagonal hole (5), a metal sleeve (604) installed at the center of the hexagonal rubber head (603), and a pin (605) that can rotate within the sleeve hole of the metal sleeve (604). The bottom center of the rotatable body (601) has a threaded blind hole (602). The bottom end of the pin (605) has a limiting handle (6051) larger than the diameter of the pin (605). The upper end of the pin (605) has an external thread. The center of the hexagonal rubber head (603) has a through hole (6031) that can insert and fix the metal sleeve (604). The upper end of the pin (605) with an external thread passes through the bottom of the through hole (6031), the bottom of the sleeve hole of the metal sleeve (604), through the metal sleeve (604), and then is screwed into the threaded blind hole (602) at the bottom of the rotatable body (601) to be fixedly connected to the rotatable body (601).

2. The knob used for disassembling and assembling the middle thread set of the screw hole according to claim 1, characterized in that: Both the first tool shank (1) and the second tool shank (2) are cylindrical. During application, the first tool shank (1) and the second tool shank (2) are used as the cranks for each other's rotation.

3. The knob used for disassembling and assembling the middle thread set of the screw hole according to claim 2, wherein: A first rotating sleeve (102) and a second rotating sleeve (202) are respectively sleeved on the outer peripheries of the first tool shank (1) and the second tool shank (2). The first rotating sleeve (102) and the second rotating sleeve (202) can respectively rotate relative to the first tool shank (1) and the second tool shank (2); The outer diameter of the first rotating sleeve (102) and the outer diameter of the second rotating sleeve (202) are respectively less than or equal to the width of the first cutter (101) and the width of the second cutter (201).

4. The knob for assembling and disassembling the middle thread set in the screw hole according to claim 3, characterized in that: The outer peripheries of the first tool shank (1) and the second tool shank (2) near the cutting end respectively have a first limiting flange (103) and a second limiting flange (203). The first rotating sleeve (102) is restricted to the outer periphery of the first tool shank (1) between the first limiting flange (103) and the torsion arm (4). The second rotating sleeve (202) is restricted to the outer periphery of the second tool shank (2) between the second limiting flange (203) and the torsion arm (4).

5. The knob for disassembling and assembling the middle thread set of a screw hole according to claim 4, characterized in that: Both ends of the torsion arm (4) are respectively provided with a first rod hole (401) and a second rod hole (402). The fixed ends of the first tool rod (1) and the second tool rod (2) respectively pass through the first rod hole (401) and the second rod hole (402) and are fixed by welding.

6. The knob used for disassembling and assembling the middle thread set of the screw hole according to any one of claims 1-5, characterized in that: One side of the torsion arm (4) is provided with a third tool lifter (3) used for screwing the tooth sleeve (8) from outside the screw hole (9) into the screw hole (9) at the initial stage. The width of the third tool lifter (3) is greater than the outer diameter of the tooth sleeve (8), and the cutting edge of the third tool lifter (3) is an arc-shaped cutting edge (301).

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