TWM632224U - Powered torque wrench with torque lock-on - Google Patents

Abstract

A power type torque wrench with locking torque includes a casing, a transmission mechanism and a torque mechanism. The transmission mechanism is inserted in the casing and is driven by the power source to rotate. The torsion mechanism includes a torsion spring and an adjustment member. The torsion spring is arranged in the casing and is penetrated by the transmission mechanism. The adjustment member is movably assembled on the casing and is penetrated by the transmission mechanism. The two ends of the torsion spring spring against the casing. With the adjustment member, the movement of the adjustment member will adjust the torsion force of the torsion spring on the housing, and the adjustment member includes a positioning member for selectively locking the adjustment member and restricting its movement. In this way, even if the user touches by mistake during the operation, the preset torque value will not be affected, ensuring that the parts are used under proper torque.

Description

Powered torque wrench with locking torque

This creation is about a power type torque wrench, especially about a power type torque wrench with locking torque.

For example, when parts such as screws, bolts or nuts leave the factory, the product or maintenance manual will indicate their torque requirements, but how to operate the parts according to the torque requirements, it is necessary to use the torque that can express the torque value of the load in an electronic or mechanical structure. wrench to meet the requirements. The torque wrench can provide users with the torque requirement, set the torque, and then use the torque wrench to operate the parts.

However, according to the structure disclosed in Taiwan Patent No. M540019, an adjustment member is arranged at the end of the main body to set the torque, and the set position is easy to be accidentally touched during operation, causing displacement, so that the parts are not operated according to the originally set torque, and the parts are generated. If the lock is too tight, it will cause damage, or if it is not locked tightly, it will cause loosening.

The purpose of the present invention is to provide a power torque wrench with locking torque to solve the above-mentioned difficulties in the prior art.

According to an embodiment of the present invention, a power type torque wrench with locking torque is provided, comprising: a casing including a first casing and a second casing, the first casing is inserted into the second casing, and the first casing is inserted into the second casing. A front end of a casing is exposed outside the second casing; a ratchet mechanism includes a rocking member and a rotating member, the rocking member can be swivelably assembled to the front end of the first casing, and the rotating member can be rotatably assembled to the rocking member The front end of the component; a transmission mechanism, which is inserted into the housing, the front end of the transmission mechanism is eccentrically rotatable and assembled on the rocking member, the rear end of the transmission mechanism is driven by a power source to rotate, and the rocking member follows the The transmission mechanism eccentrically rotates and swings, and the rotating member rotates with the swinging member; and a torsion mechanism includes a torsion spring and an adjustment member, the torsion spring is arranged in the second shell, and the torsion spring Passed through by the transmission mechanism, the adjustment member is movably assembled on the second shell, and the adjustment member is passed through by the transmission mechanism, and the two ends of the torsion spring spring against the rear end of the first shell and the adjustment member respectively At the front end, the movement of the adjusting member will adjust the torsion force of the torsion spring on the first shell, and the adjusting member includes a positioning piece for selectively locking the adjusting member and restricting its movement.

In this way, through the structures of the above embodiments, the above-mentioned power torque wrench will not affect the set torque value even if the user touches it by mistake during the operation process, so as to ensure that the parts are used under the proper torque, and thus will not affect the set torque value. It may happen that the parts are locked too tightly to cause damage or loose to loose.

The above is only used to describe the problem to be solved by this creation, the technical means to solve the problem, and the effect it produces. The specific details of this creation will be introduced in detail in the following embodiments and related drawings.

In order to make your review committee have a further understanding of this creation, the preferred embodiment is hereby given and matched with the drawings, and the details are as follows:

Referring to FIGS. 1 , 2 and 3 , the power torque wrench 10 includes a housing 20 , a ratchet mechanism 30 , a transmission mechanism 40 , a support mechanism 50 , a sound mechanism 60 and a torque mechanism 70 .

The casing 20 includes a first casing 21 and a second casing 22, and the first and second casings 21 and 22 are assembled coaxially. The first shell 21 has a hollow tubular shape, and is axially formed with a first accommodating portion 211 . The second shell 22 is also hollow tubular, and has a second accommodating 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, and the second shell 22 is inserted into the second shell 22. The front end of the first shell 21 is exposed to the outside of the second shell 22 , the first accommodating portion 211 of the first shell 21 overlaps with the front portion of the second accommodating portion 221 of the second shell 22 , and the second accommodating portion 221 of the second shell 22 The cooperation relationship between the rear section and the sound mechanism 60 and the torque mechanism 70 will be described later.

The first and second shells 21 and 22 are pivotally connected to each other, and the pivotal connection is to use two screws 20A to face each other and to be locked toward the front end of the second shell 22 and the unexposed part of the first shell 21 near the front end, but the second shell 21 is locked. A collar (not shown) is set between the side wall of 22 and the screw 20A. Therefore, the screw 20A can be regarded as the fulcrum of the first shell 21 on the second shell 22, that is to say, when the front end of the first shell 21 is forced to swing , the rear end of the first shell 21 also swings accordingly.

External threads 222 are formed on the outer side wall surface of the rear section of the second shell 22 . A first displacement hole 223 is axially formed on the rear wall surface of the second shell 22 . The number of the first displacement hole 223 is at least one, preferably two, and the first displacement holes 223 are arranged at intervals. The first displacement hole 223 is formed following the external thread 222 , and the first displacement hole 223 partially overlaps with the external thread 222 . A second displacement hole 224 is axially formed on the rear wall surface of the second shell 22 , and the number of the second displacement hole 224 is one. The second displacement holes 224 are located behind the first displacement holes 223 , and are arranged in a staggered manner, not on the same axis. The matching relationship between the external thread 222 and the first and second displacement holes 223 and 224 and the torque mechanism 70 will be described later. The rear end of the second shell 22 is locked with a stopper 225 , and the matching relationship between the stopper 225 and the transmission mechanism 40 will be described later.

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

The transmission mechanism 40 is inserted in the casing 20, the front end of the transmission mechanism 40 is eccentrically rotatable and assembled on the rocking member 31, the rear end of the transmission mechanism 40 is driven by the power source P (such as pneumatic) to rotate, and the rocking member 31 is driven by the transmission mechanism 31. 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 cylindrical, and the first and second transmission rods 41 and 42 are assembled coaxially. The first and second transmission rods 41 and 42 are inserted into the casing 20 , so that the first transmission rod 41 is set in the first accommodating portion 211 of the first casing 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 casing 22 , and the front end portion of the second transmission rod 42 is disposed in the first accommodating portion 211 of the first casing 21 .

The front end of the first transmission rod 41 is eccentrically assembled on the rocking member 31 , the rear end of the first transmission rod 41 and the front end of the second transmission rod 42 are assembled in a detachable manner, and the detachable assembly is after the first transmission rod 41 . A concave portion 411 extends axially at the end. The concave portion 411 is used for inserting the front end of the second transmission rod 42 , and then the shaft pin 43 is radially inserted into the opposite side walls of the concave portion 411 and the front end of the second transmission rod 42 .

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

The stopper 225 of the second shell 22 is penetrated by the rear end of the second transmission rod 42 , the penetrated part is driven by the power source P to rotate, and the part not penetrated is sleeved with a bearing 421 , so that the second transmission rod 42 can be The rotating assembly is mounted on the block 225 .

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

The front end of the sound mechanism 60 is assembled to 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 in the rear section of the second accommodating portion 221 of the second shell 22 . The audible mechanism 60 provides an audible reminder operation to prevent the torque from exceeding the setting.

The torsion mechanism 70 is movably assembled on the second shell 22 , and the movement of the torsion mechanism 70 will adjust the torsion force 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 accommodating portion 221 of the second housing 22 and is passed through by the second transmission rod 42 . The adjusting member 72 is movably assembled on the second casing 22 and is passed through by the second transmission rod 42 . The two ends of the torsion spring 71 spring against the rear end of the acoustic mechanism 60 and the front end of the adjusting member 72 respectively, and the movement of the adjusting member 72 will adjust the torsional force of the torsion spring 71 on the acoustic mechanism 60 . In another state, when the power torque wrench 10 does not cooperate with the sound mechanism 60, the two ends of the torsion spring 71 spring against the rear end of the first shell 21 and the front end of the adjustment member 72 respectively, and the movement of the adjustment member 72 will adjust the torsion spring 71 to the first. Torsion of a shell 21.

Please refer to FIGS. 3 , 4 and 5 . The adjusting member 72 includes an active element 73 , a first passive element 74 , a second passive element 75 , a positioning element 76 and an auxiliary spring 77 . The active member 73 is movably assembled on the outer side wall of the second shell 22, and is linked with the first and second passive members 74 and 75. When the active member 73 moves on the second shell 22, the first passive member 74 is linked to the second shell 22. The second shell 22 moves in the second shell 22 , and the second passive member 75 is linked to move on the second shell 22 . The movement of the first passive member 74 will adjust the torsion force of the torsion spring 71 on the sound mechanism 60 , that is, loosening or tightening the torsion spring 71 will determine the torsion force on the sound mechanism 60 . Another state is that when the power torque wrench 10 does not cooperate with the sound mechanism 60, the movement of the first passive member 74 will adjust the torsion force of the torsion spring 71 on the first shell 21, that is to say, loosening or tightening the torsion spring 71 will determine the correct torque. The torque of the first shell 21 is large. The positioning member 76 is movably assembled on the second passive member 75 , and the positioning member 76 is used to selectively lock the active member 73 of the adjusting member 72 to restrict its movement. The auxiliary spring 77 provides elastic force when the first passive member 74 moves.

The active member 73 is a hollow body, and the active member 73 is movably assembled on the outer side wall of the second shell 22 . An inner thread 731 is formed on the inner wall surface of the front end of the driving element 73 , and the driving element 73 is sleeved on the second shell 22 so that the inner and outer threads 731 and 222 are engaged with each other. When the driving member 73 is rotated and moved, the driving member 73 can move forward or backward in the second shell 22 .

An embossing 732 is formed on the outer wall surface of the front end of the active member 73 , and the embossing 732 is easy for the user to identify and facilitate the user to apply force.

The inner side wall between the front and rear ends of the driving member 73 faces inward and protrudes a limit pin 733, which is inserted into the first displacement hole 223 of the second shell 22, thereby restricting the displacement direction of the driving member 73 in the second shell 22 and the direction of displacement. Displacement stroke. The limiting pins 733 are cylindrical, and the number of the limiting pins 733 is at least one, preferably two, and are arranged at intervals from each other.

A slot 734 can be formed on the inner side wall between the front and rear ends of the active member 73. The slot 734 is for one end of the limit pin 733 to be inserted, so that the other end of the limit pin 733 protrudes inward and is inserted into the first end of the limit pin 733. in the first displacement hole 223 of the second shell 22 .

An insertion hole 735 may also be formed inwardly from the outer side wall between the front and rear ends of the active member 73 . The insertion hole 735 is for inserting the limit pin 733 from the outside to the inside, in order to limit the limit pin 733 to the insertion hole 735 . , a pin 736 is inserted into the two opposite side walls of the socket 735 to prevent the limit pin 733 from falling out of the socket 735, so that the limit pin 733 can only protrude inward and be inserted into the first displacement hole of the second shell 22 223. The matching relationship between the limiting pin 733 in the socket 735 and the first passive member 74 will be described later.

The selection of the number of limit pins 733 needs to match the number of first displacement holes 223 . When one limit pin 733 is used, one first displacement hole 223 is used. When two limiting pins 733 are used with the two first displacement holes 223, the active member 73 can use both the slot 734 and the insertion hole 735, and the slot 734 and the insertion hole 735 are spaced apart from each other.

A blocking portion 737 with an enlarged diameter is formed on the outer side wall between the front and rear ends of the active member 73 . The protruding thickness of the blocking portion 737 allows sufficient working space for the limiting pin 733 , the slot 734 and the insertion hole 735 . The matching relationship between 737 and the second passive member 75 and the positioning member 76 will be described later.

A ring-shaped slot 738 is formed on the outer side wall of the rear end of the active member 73 , and the matching relationship between the slot 738 and the second passive member 75 will be described later.

The first passive member 74 is a hollow body. The first passive member 74 is movably assembled on the inner side wall of the second casing 22 and is passed through by the second transmission rod 42 . The two ends of the torsion spring 71 spring against the rear end of the acoustic mechanism 60 and the front end of the first passive member 74 respectively. In another state, when the power torque wrench 10 is not matched with the sound mechanism 60, the two ends of the torsion spring 71 are respectively bounced against the rear end of the first shell 21 and the front end of the first passive member 74, and the movement of the first passive member 74 will adjust the torque. The torsional force of the spring 71 on the first shell 21 .

A slot 741 is radially formed on the outer side wall of the first passive member 74. The slot 741 is used for inserting the limit pin 733 of the active member 73 in the insertion hole 735, so that the first passive member 74 and the active member 73 can pass through the limit pin. 733 are interlocked with each other, as long as the driving member 73 located on the outside of the second shell 22 is rotated, the first passive member 74 on the inside of the second shell 22 will be driven at the same time.

The second passive member 75 is a hollow body, the front end of the second passive member 75 is sleeved on the active member 73 , and the front end of the second passive member 75 abuts against the blocking portion 737 of the active member 73 . In order to make the second passive member 75 and the active member 73 interlock with each other, a plug 751 is inserted from the outer side wall between the front and rear ends of the second passive member 75 , and the slot 738 of the active member 73 is inserted through. As long as the driving member 73 on the outside of the second shell 22 is rotated, the second passive member 75 on the outside of the second shell 22 will be driven at the same time. An external thread 752 is formed on the outer side wall of the front end of the second passive member 75 , and the matching relationship between the external thread 752 and the positioning member 76 will be described later.

The inner side wall of the rear end of the second passive member 75 faces inward and protrudes a limiting pin 753 , which is inserted into the second displacement hole 224 of the second casing 22 to limit the displacement direction and displacement of the second passive member 75 in the second casing 22 journey. An insertion hole 754 may be formed through the second passive member 75 facing inward from the outer side wall of the rear end, and the insertion hole 754 is for inserting the limiting pin 753 from the outside to the inside. In order to restrict the limit pin 753 in the insertion hole 754, the inner wall of the insertion hole 754 is formed with threads and the outer wall of the limit pin 753 is formed with threads to engage with each other, preventing the limit pin 753 from falling out of the insertion hole 754, and causing the limit pin The 753 can only protrude inward and be inserted into the second displacement hole 224 of the second shell 22 .

The rear end of the second passive member 75 is formed with a blocking portion 755 with an enlarged diameter. The blocking portion 755 of the second passive member 75 and the blocking portion 737 of the driving member 73 are opposite to each other. 754 reserves a sufficient working space, and the matching relationship between the blocking portion 755 and the positioning member 76 will be described later.

The positioning member 76 is a hollow body, and an embossing 761 is formed on the outer side wall surface thereof. The embossing 761 is easy for the user to identify and facilitate the user to apply force. An inner thread 762 is formed on the inner side wall of the positioning member 76 , and the positioning member 76 is sleeved on the second passive member 75 so that the inner and outer threads 762 and 752 are engaged with each other. When the positioning member 76 is rotated and moved, the active member 73 can move (forward or backward) on the second passive member 75 to selectively lock the active member 73 of the adjustment member 72 to restrict its movement.

Referring to FIG. 3 , when the positioning member 76 chooses to retreat and abut against the blocking portion 755 of the second passive member 75 , the active member 73 is not locked and positioned by the positioning member 76 , and the first passive member 74 linked with the active member 73 can still be positioned. The torsion force of the torsion spring 71 on the sound mechanism 60 is adjusted by the movement of the driving member 73 .

Referring to FIG. 4 , when the positioning member 76 is selected to move forward against the blocking portion 737 of the active member 73 , the active member 73 has been locked and positioned by the positioning member 76 , and the first passive member 74 linked with the active member 73 cannot be locked by the active member 73 73 moves to adjust the torsion force of the torsion spring 71 on the sound mechanism 60 . Therefore, even if the user touches by mistake during the operation, it will not affect the set torque value, ensuring that the parts are used under proper torque.

The auxiliary spring 77 is disposed in the rear section of the second accommodating portion 221 of the second shell 22 and is passed through by the second transmission rod 42 . Two ends of the auxiliary spring 77 are respectively rebounded against the rear end of the first passive member 74 and the front end of the blocking seat 225 . When the first passive member 74 moves with the active member 73 , in addition to the force exerted by the user on the first passive member 74 , the auxiliary spring 77 provides additional elastic force of the first passive member 74 , so that the user can operate more effortlessly.

To sum up, the power torque wrench 10 will not affect the preset torque value even if the user touches it by mistake during the operation, so as to ensure that the parts are used with proper torque. In this way, through the structures of the above-mentioned embodiments, the present invention will not cause damages caused by over-tightening of parts or loosening due to lack of locking.

Finally, the above disclosed embodiments are not intended to limit the present creation. Anyone who is familiar with this technique can make various changes and modifications without departing from the spirit and scope of the present creation, and they can be protected in this book. in creation. Therefore, the scope of protection of this creation should be determined by the scope of the appended patent application.

[this creation] 10: Power torque wrench 20: Shell 20A: Screw 21: First Shell 211: First accommodating part 22: Second Shell 221: Second accommodating part 222: External thread 223: The first displacement hole 224: Second displacement hole 225: Block 30: Ratchet mechanism 31: Rocking member 32: Rotating components 40: Transmission mechanism 41: The first transmission rod 411: Recess 42: Second transmission rod 421: Bearing 43: Axle pin P: power source 50: Supporting mechanism 60: Sound Mechanism 70: Torque mechanism 71: Torsion spring 72: Adjustment components 73: Active parts 731: Internal thread 732: Embossing 733: Limit pin 734: Slot 735: Jack 736: Latch 737: Stopper 738: Slot 74: First Passive 741: Slot 75: Second Passive 751: Latch 752: External thread 753: Limit pin 754: Jack 755: Stopper 76: Positioning pieces 761: Embossing 762: Internal thread 77: Auxiliary spring

Figure 1: The three-dimensional schematic diagram of the power torque wrench of this creation. Figure 2: The three-dimensional exploded view of the power torque wrench of this creation. Figure 3: The combined cross-section and the first action state diagram of the power torque wrench of this creation. Figure 4: The combined cross-section and second action state diagram of the power torque wrench of this creation. Figure 5: The combined cross-section and the third action state diagram of the power torque wrench of this creation.

10: Power torque wrench

20: Shell

21: First Shell

22: Second Shell

222: External thread

223: The first displacement hole

224: Second displacement hole

225: Block

30: Ratchet mechanism

31: Rocking member

32: Rotating components

40: Transmission mechanism

42: Second transmission rod

421: Bearing

50: Supporting mechanism

72: Adjustment components

73: Active parts

731: Internal thread

732: Embossing

733: Limit pin

735: Jack

736: Latch

737: Stopper

738: Slot

75: Second Passive

751: Latch

752: External thread

753: Limit pin

754: Jack

755: Stopper

76: Positioning pieces

761: Embossing

762: Internal thread

77: Auxiliary spring

Claims (14)

A powered torque wrench with locking torque, comprising: A casing (20) comprising a first casing (21) and a second casing (22), the first casing (21) being inserted into the second casing (22), the first casing (21) ) the front end is exposed outside the second shell (22); A ratchet mechanism (30), comprising a rocking member (31) and a rotating member (32), the rocking member (31) can be assembled to the front end of the first casing (21) in a sway, the rotating member (32) rotatably assembled to the front end of the rocking member (31); A transmission mechanism (40) is inserted into the housing (20), the front end of the transmission mechanism (40) is eccentrically rotatably assembled on the rocking member (31), and the rear end of the transmission mechanism (40) comes from a The power source (P) is driven to rotate, the rocking member (31) swings with the eccentric rotation of the transmission mechanism (40), and the rotating member (32) rotates as the rocking member (31) swings; and A torsion mechanism (70) comprising a torsion spring (71) and an adjustment member (72), the torsion spring (71) is arranged in the second shell (22), and the torsion spring (71) is driven by the transmission The mechanism (40) is passed through, the adjustment member (72) is movably assembled on the second shell (22), and the adjustment member (72) is passed through the transmission mechanism (40), and the torsion spring (71) The two ends respectively spring against the rear end of the first shell (21) 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 first shell (21), The adjusting member (72) includes a positioning member (76), and the positioning member (76) is used for selectively locking the adjusting member (72) to restrict its movement. The power torque wrench with locking torque according to claim 1, wherein the first and second shells (21, 22) are pivotally connected to each other, the shell (20) further comprises two screws (20A), the two The screws (20A) are opposite to each other and are locked towards the front end of the second shell (22) and the first shell (21) near the unexposed front end. The side wall of the second shell (22) and the two screws (20A) are locked. A ring is sleeved between, and the locking direction of the two screws (20A) of the housing (20) intersects with the swinging direction of the rocking member (31). The power torque wrench with locking torque according to claim 1, wherein the transmission mechanism (40) comprises a first transmission rod (41), a second transmission rod (42) and a shaft pin (43), the The first and second transmission rods (41, 42) are inserted into the casing (20), the front end of the first transmission rod (41) is eccentrically rotatably assembled on the rocking member (31), and the first transmission rod (41) is assembled on the rocking member (31). The rear end of the rod (41) extends axially with a recess (411), the recess (411) is for the front end of the second transmission rod (42) to be inserted into, and the shaft pin (43) is radially inserted into the recess (411) two opposite and the front end of the second transmission rod (42). The power torque wrench with locking torque according to claim 1, further comprising a support mechanism (50), which is detachably assembled on the housing (20), and when the transmission mechanism (40) rotates is supported by the supporting mechanism (50). The power torque wrench with locking torque according to claim 1, further comprising a sound mechanism (60), the front end of which is assembled at the rear end of the first shell (21), and the sound mechanism (60) is affected by the sound mechanism (60). The transmission mechanism (40) is worn through, the sound mechanism (60) is arranged in the second shell (22), the rear end of the sound mechanism (60) is resisted by the torsion spring (71), and the adjustment member (72) Movement will adjust the torsion force of the torsion spring (71) on the sound mechanism (60). The power torque wrench with locking torque according to claim 1, wherein an outer thread (222) is formed on the outer side wall of the rear section of the second shell (22), and a first A displacement hole (223), the first displacement hole (223) is formed following the external thread (222), the first displacement hole (223) partially overlaps with the external thread (222), and the rear section of the second shell (22) A second displacement hole (224) is axially formed on the wall surface, the second displacement hole (224) is located behind the first displacement hole (223), and a stopper (225) is locked at the rear end of the second shell (22), The stopper (225) is pierced by the rear end of the transmission mechanism (40), the pierced part is driven by the power source (P) to rotate, and the unpierced part is sleeved with a bearing (421). The transmission mechanism (40) The rear end is rotatably assembled on the blocking seat (225). The power torque wrench with locking torque according to claim 6, wherein the adjusting member (72) further comprises a driving element (73), the driving element (73) is a hollow body, and the driving element (73) can be The movable assembly is assembled on the outer side wall surface of the second shell (22), the inner side wall surface of the front end of the driving member (73) is formed with an inner thread (731), and the driving member (73) is sleeved on the second shell (22), The inner and outer threads (731, 222) are engaged with each other, an embossing (732) is formed on the outer side wall of the front end of the driving element (73), and the inner side wall between the front and rear ends of the driving element (73) protrudes inward for a limited amount of time. A position pin (733) is inserted into the first displacement hole (223) of the second shell (22), and the driving element (73) is formed with an enlarged diameter first stop on the outer side wall surface between the front and rear ends A slot (738) is formed on the outer side wall surface of the rear end of the driving element (73). The power torque wrench with locking torque according to claim 7, wherein a slot (734) is formed on the inner side wall between the front and rear ends of the driving element (73), and the slot (734) is used for the restriction One end of the positioning pin (733) is inserted, and the other end of the limiting pin (733) protrudes inward and is inserted into the first displacement hole (223) of the second shell (22). The power torque wrench with locking torque according to claim 7, wherein an insertion hole (735) is formed through the outer side wall between the front and rear ends of the driving element (73) facing inward, and the insertion hole (735) For the limiting pin (733) to be inserted from the outside to the inside, the limiting pin (733) protrudes inwardly and is inserted into the first displacement hole (223) of the second shell (22). The power torque wrench with locking torque according to claim 7, wherein the adjustment member (72) further comprises a first passive member (74), the first passive member (74) is a hollow body, and the first passive member (74) is a hollow body. The passive member (74) is movably assembled on the inner side wall surface of the second casing (22), and the first passive member (74) is penetrated by the transmission mechanism (40), and the front end of the first passive member (74) is subjected to The torsion spring (71) bounces, and a slot (741) is radially formed on the outer side wall of the first passive member (74), and the slot (741) is used for the limiting pin (733) of the active member (73). The insertion arrangement enables the first passive element (74) and the active element (73) to be linked with each other through the limiting pin (733). The power torque wrench with locking torque as claimed in claim 10, wherein the adjustment member (72) further comprises a second passive member (75), the second passive member (75) is a hollow body, and the second passive member (75) is a hollow body. The front end of the passive member (75) is sleeved on the active member (73), and the front end of the second passive member (75) abuts against the blocking portion (737) of the active member (73), and the second passive member (75) ) A plug (751) is inserted on the outer side wall surface between the front and rear ends, the plug (751) passes through the slot (738) of the driving element (73), and the front outer side wall surface of the second passive element (75) An external thread (752) is formed, and a limit pin (753) protrudes inward from the inner side wall of the rear end of the second passive member (75), which is inserted into the second displacement hole (224) of the second shell (22) ), the rear end of the second passive member (75) is formed with a blocking portion (755) with an enlarged diameter, the blocking portion (755) of the second passive member (75) and the blocking portion of the driving member (73) (737) opposite each other. The power torque wrench with locking torque as claimed in claim 11, wherein an insertion hole (754) is formed through the rear outer side wall of the second passive member (75) facing inward, and the insertion hole (754) is used for the restriction The positioning pin (753) is inserted from the outside to the inside, and the limiting pin (753) protrudes inwardly and is inserted into the second displacement hole (224) of the second shell (22). The power torque wrench with locking torque according to claim 11, wherein the positioning member (76) of the adjusting member (72) is a hollow body, and the positioning member (76) is movably assembled to the second passive On the part (75), an embossing (761) is formed on the outer side wall surface of the positioning part (76), an inner thread (762) is formed on the inner side wall surface of the positioning part (76), and the positioning part (76) is sleeved on the second On the passive member (75), the internal and external threads (762, 752) are engaged with each other, and the positioning member (76) moves on the second passive member (75) to selectively lock the active movement of the adjustment member (72). Piece (73) in turn restricts its movement. The power type torque wrench with locking torque according to claim 13, wherein the adjustment member (72) further comprises an auxiliary spring (77), which is arranged in the second shell (22), and the auxiliary spring ( 77) Being penetrated by the transmission mechanism (40), the two ends of the auxiliary spring (77) spring against the rear end of the first passive member (74) and the front end of the block (225) respectively.

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