TWI815420B - Powered torque wrench with sound mechanism - Google Patents

Abstract

A powered torque wrench with a sound mechanism comprises a housing, a sound mechanism and a torsion mechanism, the housing comprises a first casing inserted into a second casing, the first and second casings are pivotally connected to each other; the sound mechanism comprises a first ring seat detachably assembled on the first casing, a second ring seat movably assembled in the second casing, two ends of a dislocation member are respectively inserted into the first and second ring seats; movement of the torsion mechanism is capable of adjusting a torsion on the sound mechanism, a force exerted on the first casing is greater than a torsion provided by the torsion mechanism, the first casing using the second casing as a fulcrum to generate deflection causes the first ring seat to offset with the first casing, and dislocation between the first and second ring seats causes the dislocation member to deflect and emit sound. Thereby, the powered torque wrench is capable of providing an audible reminder in operation to prevent a torsion from exceeding a setting in order to prolong a service life of the components.

Description

Power torque wrench with sound mechanism

The present invention relates to a power torque wrench, and in particular to a power torque wrench with a sound mechanism.

When screws, bolts, nuts and other parts leave the factory, the product or maintenance manual will indicate the torque requirements. However, during general wrench operation, there is no way to know whether the torque meets the requirements. The parts are either too tight and cause damage, or they are not locked and cause looseness. Take off.

The object of the present invention is to provide a power torque wrench with a sound mechanism to solve the above difficulties mentioned in the prior art.

According to an embodiment of the present invention, a power torque wrench with a sound mechanism is provided, which includes: a housing including a first housing and a second housing, the first housing is inserted into the second housing, and the third housing is inserted into the second housing. The front end of a shell is exposed outside the second shell, and the first and second shells are pivotally connected to each other; a ratchet mechanism includes a swing member and a rotating member, and the swing member is swingably assembled at the front end of the first shell. , the rotating member is rotatably assembled on the front end of the swing member; a transmission mechanism is inserted into the housing, the front end of the transmission mechanism is eccentrically rotatable and assembled on the swing member, and the rear end of the transmission mechanism comes from a power source The swing member rotates with the eccentric rotation of the transmission mechanism, and the rotating member rotates with the swing of the swing member; a sound mechanism includes a first ring seat, a second ring seat and At least one dislocation member, the first ring seat and the second ring seat are respectively penetrated by the transmission mechanism, the first ring seat is detachably assembled at the rear end of the first shell, the end surface of the first ring seat is formed with at least A first dislocation groove, the second ring seat is movably assembled in the second shell, the end surface of the second ring seat is formed with at least a second dislocation groove, and the two ends of the at least one dislocation member are respectively inserted into the at least one The first and second misalignment grooves; and a torque mechanism that is movably assembled on the second shell. The movement of the torque mechanism will adjust the torque on the sound mechanism. The force on the first shell is greater than that provided by the torque mechanism. The torsion force causes the first shell to deflect with the second shell as a fulcrum. The first ring seat deflects as the first shell deflects, and the at least one first and second dislocation grooves are misaligned with each other, which will cause the at least one first ring seat to be deflected. The dislocation member is deflected, and the second ring seat is displaced along with the deflection of the at least one dislocation member.

In this way, through the structure of the above embodiments, the above-mentioned power torque wrench provides an audible reminder operation to prevent the torque from exceeding the set value, thereby extending the life of the parts.

The above description is only used to describe the problems to be solved by the present invention, the technical means to solve the problems, and the effects thereof. The specific details of the present invention will be introduced in detail in the following embodiments and related drawings.

[Invention]

10: Power torque wrench

20: Shell

20A, 20B: Screws

20A1: Collar

21:First shell

211:First Accommodation Department

22:Second shell

221:Second Accommodation Department

30: Ratchet mechanism

31:Swing member

32: Rotating component

40: Transmission mechanism

P: power source

41:First transmission rod

411: concave part

42:Second transmission rod

43:Shaft pin

50:Support mechanism

60: Sound mechanism

60A:Screw

61:The first ring seat

611:First front end

612:First backend

613: First dislocation groove

62:Second ring seat

621: Second front end

622: Second backend

623: Second dislocation groove

624: Second displacement hole

63:The third ring seat

631: The third front end

632:Third backend

633:Third displacement hole

64: Dislocation parts

70:Torque mechanism

71: Torsion spring

72:Adjust components

721: Passive parts

722:Active parts

Figure 1: A schematic three-dimensional view of the power torque wrench of the present invention.

Figure 2: A three-dimensional exploded view of the power torque wrench of the present invention.

Figure 3: Combined cross-sectional view of the power torque wrench of the present invention.

Figure 4: An enlarged partial cross-sectional view of the power torque wrench in Figure 3 of the present invention.

Figure 5: Partially assembled cross-sectional view of Figure 4 of the power torque wrench of the present invention.

Figure 6: A combined cross-sectional view of the housing and ratchet mechanism of the power torque wrench of the present invention in Figure 3.

In order to enable you, the review committee, to have a further understanding of the present invention, here are preferred embodiments and accompanying drawings, which are described in detail below: Please refer to Figures 1 to 6. The power torque wrench 10 includes a housing 20 and a ratchet mechanism 30. , transmission mechanism 40, support mechanism 50, sound mechanism 60 and torque mechanism 70.

The housing 20 includes a first shell 21 and a second shell 22. The first and second shells 21 and 22 are coaxially assembled. The first shell 21 is hollow tubular, and has a first accommodating portion 211 formed in the axial direction. The second shell 22 is also hollow tubular, and has a second receiving portion 221 formed in the axial direction. The diameter of the second shell 22 is larger than the diameter of the first shell 21, so that the first shell 21 is inserted into the second shell 22. The front end of the first shell 21 is exposed outside the second shell 22 , and the first receiving portion 211 of the first shell 21 overlaps with the front portion of the second receiving portion 221 of the second shell 22 .

The first and second shells 21 and 22 are pivotally connected to each other. The pivotal connection is made by using two screws 20A to face each other and lock toward the front end of the second shell 22 and the first shell 21 near the front end where the front end is not exposed. However, in the second shell There is a collar 20A1 between the side wall of 22 and the screw 20A (please refer to Figure 6). Therefore, the screw 20A can be regarded as the fulcrum of the first shell 21 on the second shell 22, that is to say, the front end of the first shell 21 is stressed. When swinging, the rear end of the first shell 21 also swings.

The ratchet mechanism 30 is disposed at the front end of the first housing 21 and is exposed outside the front end of the second housing 22 . The ratchet mechanism 30 includes a swing member 31 and a rotating member 32. The swing member 31 is swingably assembled at the front end of the first shell 21, and the rotating member 32 is rotatably assembled at the front end of the swing member 31.

The transmission mechanism 40 is inserted into the housing 20. The front end of the transmission mechanism 40 can be eccentrically rotated and assembled on the swing member 31. The rear end of the transmission mechanism 40 is driven by the power source P (such as pneumatic) to rotate. The swing member 31 follows the transmission. The mechanism 40 rotates eccentrically and swings, and the rotating member 32 rotates clockwise or counterclockwise as the rocking member 31 swings.

The transmission mechanism 40 includes a first transmission rod 41, a second transmission rod 42 and a shaft pin 43. The first and second transmission rods 41 and 42 are cylinders, and the first and second transmission rods 41 and 42 are coaxially assembled.

The first and second transmission rods 41 and 42 are inserted into the housing 20 so that the first transmission rod 41 is disposed in the first receiving portion 211 of the first housing 21 and the second transmission rod 42 is located in the first transmission rod 41 Afterwards, the second transmission rod 42 is disposed in the rear section of the second accommodating portion 221 of the second housing 22 , and the front end portion of the second transmission rod 42 is disposed in the first accommodating portion 211 of the first housing 21 .

The front end of the first transmission rod 41 is assembled on the swing member 31 in an eccentrically rotatable manner. The rear end of the first transmission rod 41 and the front end of the second transmission rod 42 are detachably assembled. The detachable assembly is the rear end of the first transmission rod 41 . A recess 411 extends axially from the end. This recess 411 is for the front end of the second transmission rod 42 to be inserted. Then, the shaft pin 43 is used to radially insert the two opposite side walls of the recess 411 and the front end of the second transmission rod 42.

The rear end of the second transmission rod 42 rotates driven by the power source P, the first transmission rod 41 rotates with the second transmission rod 42, the swing member 31 swings with the eccentric rotation of the first transmission rod 41, and the rotating member 32 follows the rotation of the second transmission rod 42. The rocking member 31 swings to rotate clockwise or counterclockwise. In particular, the swing direction of the swing member 31 intersects with the locking direction of the two screws 20A of the housing 20 .

The support mechanism 50 is detachably assembled on the housing 20 so that the transmission mechanism 40 is supported by the support mechanism 50 when rotating. The support mechanism 50 is used to support rotational motion and reduce friction loss.

Please refer to Figures 2, 3, 4 and 5. The front end of the sound mechanism 60 is assembled on the rear end of the first shell 21, and is penetrated by the second transmission rod 42 of the transmission mechanism 40, so that the sound mechanism 60 is disposed on the second end of the second shell 22. The second receiving part 221 is in the rear section. The sound mechanism 60 includes a first ring seat 61, a second ring seat 62, a third ring seat 63 and a dislocation member 64. The first, second and third ring seats 61, 62 and 63 are hollow bodies and are respectively driven by the second transmission. Rod 42 is inserted.

The first ring seat 61 is detachably assembled at the rear end of the first shell 21 . Two axial ends of the first ring seat 61 are respectively formed with a first front end 611 with a reduced diameter and a first rear end 612 with an enlarged diameter.

The first front end 611 of the first ring seat 61 is detachably assembled to the rear end of the first shell 21. The detachable assembly is to insert the first front end 611 of the first ring seat 61 into the rear end of the first shell 21. Then, two screws 60A are used to lower each other and lock toward the two opposite side walls of the rear end of the first shell 21 and the two opposite side walls of the first front end 611 . In particular, the locking direction of the two screws 60A intersects with the swinging direction of the swinging member 31 .

A first misalignment groove 613 is axially formed on the end face of the first rear end 612 of the first ring seat 61. The two opposite groove walls of the first misalignment groove 613 are inclined toward the end face. The first misalignment groove 613 is approximately trapezoidal in cross-section. . The number of the first dislocation grooves 613 is at least one, preferably two, and are spaced apart from each other on the end surface of the first rear end 612 .

The second ring seat 62 is movably assembled in the second shell 22 . Two axial ends of the second ring seat 62 are respectively formed with a second front end 621 with an enlarged diameter and a second rear end 622 with a reduced diameter.

A second misalignment groove 623 is axially formed on the end surface of the second front end 621 of the second ring seat 62. The two opposite groove walls of the second misalignment groove 623 are outwardly inclined toward the end surface. The second misalignment groove 623 is approximately trapezoidal in cross-section. The number of the second dislocation grooves 623 is at least one, preferably two, and are spaced apart from each other on the end surface of the second front end 621 .

Two opposite side walls of the second rear end 622 of the second ring seat 62 are axially formed with second displacement holes 624. The number of the second displacement holes 624 is at least one, and preferably two are arranged opposite to each other. The second displacement holes 624 is used to limit the displacement direction and displacement stroke of the second ring seat 62 on the second shell 22 .

The third ring seat 63 is movably assembled in the second shell 22 . Two axial ends of the third ring seat 63 are respectively formed with a third front end 631 with an enlarged diameter and a third rear end 632 with a reduced diameter.

The third displacement hole 633 is axially formed on two opposite side walls of the third front end 631 of the third ring seat 63. The number of the third displacement hole 633 is at least one, preferably two are arranged opposite to each other. The third displacement hole 633 It is used to limit the displacement direction and displacement stroke of the third ring seat 63 on the second shell 22 .

The third front end 631 of the third ring seat 63 and the second rear end 622 of the second ring seat 62 are inserted oppositely, so that the third displacement hole 633 of the third ring seat 63 and the second displacement hole 624 of the second ring seat 62 Opposite to each other, screws 20B are locked from the two opposite side walls on the outside of the second housing 22 and inserted inward into the second and third displacement holes 624 and 633 for limiting the second and third ring seats 62 and 633 . 63 in the displacement direction and displacement stroke of the second shell 22, so that the second and third ring seats 62 and 63 can be axially displaced within the second shell 22.

The dislocation member 64 is a cylinder, and the number of the dislocation member 64 is at least one, preferably two. The two ends of the dislocation member 64 are inserted into the first and second dislocation grooves 613 and 623 respectively, so that the first ring seat 61 and The end faces of the second ring seats 62 are separated from each other by a working distance.

The torque mechanism 70 is movably assembled on the second shell 22 , and the movement of the torque mechanism 70 will adjust the torque on the sound mechanism 60 .

The torsion mechanism 70 includes a torsion spring 71 and an adjustment member 72 . The torsion spring 71 is disposed in the rear section of the second receiving portion 221 of the second housing 22 and is penetrated by the second transmission rod 42 . The adjusting member 72 is movably assembled on the second shell 22. The two ends of the torsion spring 71 respectively spring against the rear end of the sound mechanism 60 and the front end of the adjusting member 72. The movement of the adjusting member 72 will adjust the torsion force of the torsion spring 71 on the sound mechanism 60.

The adjustment member 72 includes a passive part 721 and an active part 722 . The passive member 721 is a hollow body. The passive member 721 is movably assembled on the inner wall surface of the second shell 22 and is penetrated by the second transmission rod 42 . The two ends of the torsion spring 71 respectively spring against the third rear end 632 of the third ring seat 63 and the front end of the passive member 721 .

The active part 722 is a hollow body. The active part 722 is movably assembled on the outer wall of the second shell 22 and is linked with the passive part 721. When the active part 722 moves on the second shell 22, it will link the passive part 721 on the second shell 22. When the housing 22 moves, the movement of the driven member 721 will adjust the torque exerted by the torsion spring 71 on the sound mechanism 60 , that is to say, loosening or tightening the torsion spring 71 will determine the torque exerted on the sound mechanism 60 .

Under normal conditions: when the force on the first shell 21 is less than the torque provided by the torque mechanism 70, the first shell 21 does not move, the first and second dislocation grooves 613 and 623 are opposite to each other, and the two end surfaces of the dislocation member 64 are against the first and second dislocation grooves 613 and 623, respectively. The bottom of the second dislocation grooves 613 and 623.

In the dislocation state: when the force on the first shell 21 is greater than the torsion provided by the torsion mechanism 70, the first shell 21 actuates, and the first shell 21 deflects with the second shell 22 as the fulcrum, and the first ring seat 61 follows the first shell 22. When the shell 21 deflects, the first and second dislocation grooves 613 and 623 are dislocated with each other, causing the dislocation member 64 to deflect. The second and third ring seats 62 and 63 are displaced along with the deflection of the dislocation member 64, causing each dislocation member 64 to deflect. The side surfaces of the two ends respectively abut against the walls of the first and second dislocation grooves 613 and 623 to make a sound. This sound is used to indicate that the torque requirement has been reached. In particular, the deflection direction of the two dislocation members 64 is the same as the swing direction of the swing member 31.

To sum up, the power torque wrench 10 sets the torque according to the torque requirement. Once the torque requirement is reached, the first and second dislocation grooves 613 and 623 will be misaligned with each other, which will deflect the dislocation member 64, causing the two ends and sides of each dislocation member 64 to The groove walls of the first and second dislocation grooves 613 and 623 respectively make a sound, and this sound is used to indicate that the torque requirement has been reached. In this way, through the structure described in the above embodiments, the present invention provides an audible reminder operation to prevent the torque from exceeding the set value, thereby extending the life of the parts.

Finally, the above disclosed embodiments are not intended to limit the present invention. Anyone skilled in the art can make various modifications and modifications without departing from the spirit and scope of the present invention, and all of them are protected by the present invention. Inventing. Therefore, the protection scope of the present invention shall be determined by the appended patent application scope.

10: Power torque wrench

20: Shell

20B:Screw

21:First shell

22:Second shell

30: Ratchet mechanism

31:Swing member

32: Rotating component

42:Second transmission rod

43:Shaft pin

50:Support mechanism

60: Sound mechanism

60A:Screw

61:The first ring seat

611:First front end

612:First backend

62:Second ring seat

621: Second front end

622: Second backend

623: Second dislocation groove

624: Second displacement hole

63:The third ring seat

631: The third front end

632:Third backend

633:Third displacement hole

64: Dislocation parts

70:Torque mechanism

71: Torsion spring

72:Adjust components

Claims (10)

A power torque wrench with a sound mechanism, including: a shell (20), which includes a first shell (21) and a second shell (22), the first shell (21) is inserted into the second shell (22). Inside the shell (22), the front end of the first shell (21) is exposed outside the second shell (22), and the first and second shells (21, 22) are pivotally connected to each other; a ratchet mechanism (30), which includes A rocking member (31) and a rotating member (32). The rocking member (31) is swingably assembled at the front end of the first shell (21). The rotating member (32) is rotatably assembled at the rocking member (31). 31) Front end; a transmission mechanism (40), which is inserted into the housing (20). The front end of the transmission mechanism (40) can be eccentrically rotated and assembled on the swing member (31). The transmission mechanism (40) The rear end is driven by a power source (P) to rotate. The swing member (31) swings as the transmission mechanism (40) eccentrically rotates, and the rotating member (32) swings as the swing member (31) swings. Rotation; a sound mechanism (60), which includes a first ring seat (61), a second ring seat (62) and at least one dislocation member (64), the first ring seat (61) and the second The ring seats (62) are respectively penetrated by the transmission mechanism (40). The first ring seat (61) is detachably assembled at the rear end of the first shell (21). The end surface of the first ring seat (61) is formed At least one first misalignment groove (613), the second ring seat (62) is movably assembled in the second shell (22), and at least one second misalignment groove (623) is formed on the end surface of the second ring seat (62) ), the two ends of the at least one dislocation member (64) are respectively inserted into the at least one first and second dislocation grooves (613, 623); and a torsion mechanism (70) is movably assembled on the second shell (22), the movement of the torque mechanism (70) will adjust the torque on the sound mechanism (60), and the force on the first shell (21) is greater than The torsion force provided by the torsion mechanism (70) causes the first shell (21) to deflect with the second shell (22) as the fulcrum, and the first ring seat (61) deflects along with the first shell (21). Pendulum, the at least one first and second dislocation grooves (613, 623) are dislocated with each other to deflect the at least one dislocation member (64), and the second ring seat (62) follows the movement of the at least one dislocation member (64). deflection and displacement. The power torque wrench with a sound mechanism as claimed in claim 1, wherein the housing (20) further includes two screws (20A), the two screws (20A) facing each other and facing the second housing (22) ) front end and the first shell (21) are locked near the unexposed part of the front end, and a set of rings (20A1) is set between the side wall of the second shell (22) and the two screws (20A). The shell (20) The locking direction of the two screws (20A) intersects with the swinging direction of the swing member (31). The power torque wrench with a sound mechanism as claimed in claim 1, wherein the transmission mechanism (40) includes a first transmission rod (41), a second transmission rod (42) and a shaft pin (43). The first and second transmission rods (41, 42) are inserted into the housing (20). The front end of the first transmission rod (41) is assembled on the swing member (31) so as to be eccentrically rotatable. The rear end of the rod (41) and the front end of the second transmission rod (42) are detachably assembled. A recess (411) extends axially from the rear end of the first transmission rod (41), and the recess (411) is used for the third transmission rod (41). The front end of the two transmission rods (42) is inserted, and the shaft pin (43) is radially inserted between the two opposite side walls of the recess (411) and the front end of the second transmission rod (42). The power torque wrench with a sound mechanism as claimed in claim 1, further comprising a support mechanism (50) which is detachably assembled on the housing (20). When the transmission mechanism (40) rotates It is supported by the support mechanism (50). The power torque wrench with a sound mechanism as claimed in claim 3, wherein the first ring seat (61) of the sound mechanism (60) is penetrated by the second transmission rod (42), and the first ring seat (61) Both axial ends are respectively formed with a first front end (611) with a reduced diameter and a first rear end (612) with an enlarged diameter. The first front end (611) is detachably assembled on the first shell. (21) Rear end, the first front end (611) is inserted into the rear end of the first shell (21), the sound mechanism (60) further includes two screws (60A), the two screws (60A) are opposite to each other , locked toward the two opposite side walls of the rear end of the first shell (21) and the two opposite side walls of the first front end (611), the locking direction of the two screws (60A) intersects with the swing direction of the swing member (31), The at least one first dislocation groove (613) is axially formed on the end surface of the first rear end (612), and the two opposite groove walls of the at least one first dislocation groove (613) are inclined toward the end surface. The power torque wrench with a sound mechanism as claimed in claim 5, wherein the second ring seat (62) of the sound mechanism (60) is penetrated by the second transmission rod (42), and the second ring seat (62) Two axial ends are respectively formed with a second front end (621) with an enlarged diameter and a second rear end (622) with a reduced diameter. The at least one second front end (621) is axially formed on the end surface of the second front end (621). Dislocation groove (623), the two opposite groove walls of the at least one second misalignment groove (623) are inclined toward the end surface, and the side wall of the second rear end (622) is axially formed with at least a second displacement hole (624). At least one second displacement hole (624) limits the displacement direction and displacement stroke of the second ring seat (62) on the second shell (22). The power torque wrench with a sound mechanism as described in claim 6, wherein the sound mechanism (60) further includes a third ring seat (63), which is movably assembled in the second shell (22), The third ring seat (63) is penetrated by the second transmission rod (42), and the two axial ends of the third ring seat (63) are respectively formed with a third front end (631) with an enlarged diameter and a reduced diameter. third At the rear end (632), the side wall of the third front end (631) is axially formed with at least a third displacement hole (633), and the at least one third displacement hole (633) limits the third ring seat (63) to the second The displacement direction and displacement stroke of the shell (22), the third ring seat (63) displaces with the deflection of the at least one dislocation member (64), the third front end (631) and the second ring seat (62) The second rear end (622) is inserted relatively, the at least one third displacement hole (633) and the at least one second displacement hole (624) are opposite to each other, and the housing (20) further includes at least one screw ( 20B), lock the at least one screw (20B) from the outer side wall of the second shell (22), and insert it into the at least one second and third displacement hole (624, 633) to limit the second and third displacement holes (624, 633). The displacement direction and stroke of the three-ring seats (62, 63) in the second shell (22), the second and third ring seats (62, 63) are displaced with the deflection of the at least one dislocation member (64) . The power torque wrench with a sound mechanism as claimed in claim 7, wherein the torque mechanism (70) includes a torsion spring (71) and an adjustment member (72), and the torsion spring (71) is disposed on the second In the shell (22), and penetrated by the second transmission rod (42), the adjustment member (72) is movably assembled on the second shell (22), and the two ends of the torsion spring (71) respectively spring against The sound mechanism (60) and the adjustment member (72), the movement of the adjustment member (72) will adjust the torsion force of the torsion spring (71) to the sound mechanism (60). The power torque wrench with a sound mechanism as claimed in claim 8, wherein the adjusting member (72) includes a passive part (721) and an active part (722), and the passive part (721) is movably assembled on On the inner wall of the second shell (22) and penetrated by the second transmission rod (42), the two ends of the torsion spring (71) respectively spring against the third rear end (63) of the third ring seat (63). 632) and the front end of the passive part (721), the active part (722) is movably assembled on the outer wall of the second shell (22), and is linked with the passive part (721), the active part (722) in the second shell(22) Moving upward will link the passive component (721) to move in the second shell (22), and the movement of the passive component (721) will adjust the torsion force of the torsion spring (71) on the sound mechanism (60). The power torque wrench with a sound mechanism as claimed in claim 1, wherein the deflection direction of the at least one dislocation member (64) is the same as the swing direction of the swing member (31).

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