WO2022140922A1 - 数码显示预设扭力的扭矩扳手 - Google Patents

数码显示预设扭力的扭矩扳手 Download PDF

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Publication number
WO2022140922A1
WO2022140922A1 PCT/CN2020/140189 CN2020140189W WO2022140922A1 WO 2022140922 A1 WO2022140922 A1 WO 2022140922A1 CN 2020140189 W CN2020140189 W CN 2020140189W WO 2022140922 A1 WO2022140922 A1 WO 2022140922A1
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WO
WIPO (PCT)
Prior art keywords
torque
torsion bar
axis
torsion
torque wrench
Prior art date
Application number
PCT/CN2020/140189
Other languages
English (en)
French (fr)
Inventor
胡厚飞
Original Assignee
胡厚飞
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 胡厚飞 filed Critical 胡厚飞
Priority to PCT/CN2020/140189 priority Critical patent/WO2022140922A1/zh
Publication of WO2022140922A1 publication Critical patent/WO2022140922A1/zh

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B23/00—Details of, or accessories for, spanners, wrenches, screwdrivers
    • B25B23/14—Arrangement of torque limiters or torque indicators in wrenches or screwdrivers
    • B25B23/142—Arrangement of torque limiters or torque indicators in wrenches or screwdrivers specially adapted for hand operated wrenches or screwdrivers

Definitions

  • the present invention relates to a torque wrench, in particular to a torque wrench capable of digitally displaying preset torque.
  • “Torque release wrench of the The preset type torque wrench of "preset type” has a joint at one end of the handle. The joint is rotated to set a ratchet head. One ends of the main beam and the secondary beam are respectively connected to the joint and located in the handle. The beam is long, and there is a release mechanism between the two. The end of the main beam that is different from the joint is connected with the handle by screws, and the dial and the screw are connected to rotate with it, and the screws are driven by rotating the dial, and then the main beam is laterally fine-tuned relative to each other. The position of the handle is used to change the pressing degree of the release mechanism acting on the secondary beam, so as to achieve the purpose of adjusting the preset torque. Wherein, when the torque wrench is driven to the preset torque, the free end of the secondary beam is disconnected from the release mechanism. And make a sound to remind the user.
  • the screw for adjusting the torque of the aforementioned preset torque wrench is located on the side of the handle, so it is inconvenient to adjust and use.
  • Taiwan Utility Model Patent No. M568759 discloses a torque wrench. Similar to the aforementioned wrench, the knob at one end of the torque wrench's shaft is also exposed laterally outside the hollow tube, so it is inconvenient to operate when adjusting the torque.
  • the present invention provides a torque wrench with a digital display of preset torque, which displays the torque value of the torque wrench on a display, which is convenient for users to observe and judge the current torque value, and the torque adjustment device can provide users with quick adjustment. torque value.
  • a torque wrench digitally displaying a preset torque which includes a body, a driving device, a releasing device, a torque adjusting device and a torque sensing device.
  • the body is provided with a first end and a second end away from the first end along a first axis, an operation hole is arranged between the first end and the second end, and the operation hole is along a second end perpendicular to the first axis.
  • the axis is open to the main body;
  • the driving device has a driving part and a first torsion bar and a second torsion bar respectively extending into the first end of the main body, the driving part can drive the fastener, and the first torsion bar has a partial Circumferential tooth slot;
  • the release device is arranged between the first torsion bar and the body and selectively buckled with the second torsion bar.
  • the torque wrench drives the fastener to reach a preset torque value
  • the release device can be connected with the first torsion bar.
  • the two torsion bars are in a disconnected state; the torsion adjustment device is rotatably arranged on the body and connected to the first torsion bar, and the torsion adjustment device includes an adjustment piece, and the adjustment piece is along a third axis perpendicular to the first axis and the second axis.
  • the axis is rotatably arranged on the body and partially exposed to the operation hole, the adjusting member is engaged with the non-circumferential tooth slot, and is used to adjust the offset of the first torsion bar relative to the body; and the torsion force sensing device is arranged on the body, and the torsion force sensing device
  • the torque value of the torque wrench can be sensed, and the torque value can be displayed on a display.
  • the present invention displays the current torque value of the torque wrench on the display, which is convenient for the user to observe and judge.
  • the adjusting element of the present invention engages with the end of the first torsion bar through non-circumferential tooth grooves, so as to provide the user with fast and labor-saving driving to rotate the adjusting element to adjust the torsion value.
  • the adjusting member of the present invention is partially exposed at the operation hole, so that the user can operate with fingers when the user holds the body by hand, which is quite convenient to use.
  • the adjusting member has a helical tooth distributed in its circumferential direction, the non-circumferential tooth groove is a helical tooth groove, the helical tooth meshes with the non-circumferential tooth groove, and the circumferential direction of the adjusting member is It includes an engaging area inside the main body and a toggle area outside the main body.
  • non-circumferential tooth groove is semi-circular, and a spacer is respectively provided between two ends of the helical tooth and the main body.
  • the main body is provided with an accommodating space
  • the holding device is arranged between the first torsion bar and the main body along the second axis direction to hold the adjusting member and the incomplete Meshing of the circumferential teeth.
  • the first torsion bar has an end, the end has the non-circumferential tooth slot, and a side different from the non-circumferential tooth slot is provided with an accommodating hole, and the holding device includes a top ball and a A spring, the top ball and the spring are arranged in the accommodating hole, and the spring makes the top ball abut against an inner wall of the accommodating space.
  • a protective cover which can move relative to the main body in a closed position and an open position. In the closed position, the protective cover covers the operating hole and the adjustment member, and in the open position, The adjustment member is operable by the user.
  • a limiting device which can limit the rotation of the adjusting member when the cover is in the closed position.
  • the limiting device includes a pressing member, the pressing member has a fixed end and a pressing end, the fixed end is fixed to the protective cover, and the pressing end can elastically press against the adjusting member;
  • the protective cover has a pivot portion pivotally disposed on one side of the display.
  • the main body includes a holding piece sleeved on the second end, the positioning device is arranged between the holding piece and the protective cover, so that the protective cover is kept in the closed position ;
  • the protective cover has a pivoting portion pivotally disposed on one side of the display, the protective cover is provided with a resting portion away from the pivoting portion, and the positioning device includes a limiting member and at least one elastic body, the elastic The body is held against the limiting piece, so that the limiting piece abuts toward the abutting portion.
  • the operation hole and the display are located on the same side of the body.
  • the torsion force sensing device has a sensing element and a sensed element
  • the display is electrically connected to the sensing element
  • the sensed element can be displaced with the first torsion bar
  • a torque signal can be generated by non-contact sensing of the displacement change of the sensed element
  • the display can display the torque value according to the torque signal.
  • the torque sensing device includes a circuit board, a processing unit and a power supply, the circuit board, the processing unit and the power supply are arranged in the display, the processing unit and the display are electrically connected to the circuit board,
  • the second end of the body is provided with a sensing hole, the sensing hole communicates with the body, the sensed element is set in the first torsion bar, and the sensing element senses the sensed through the sensing hole element.
  • the torque sensing device includes a circuit board, a processing unit, a power supply and an amplification mechanism, the circuit board, the processing unit and the power supply are arranged in the display, the processing unit and the display and the circuit board electrically connected, the amplifying mechanism is arranged on the main body and connected with the first torsion bar, the sensed element is arranged on the amplifying mechanism, and the displacement change is sensed by the sensing element.
  • the amplifying mechanism includes a swing piece and a turntable, one end of the swing piece is oscillated on the body through a first pivot, and the swing piece is connected to the first torsion bar along a direction parallel to the second axis , and can swing relative to the body with the displacement of the first torsion bar, the turntable is arranged on the body along the direction parallel to the second axis, the sensed element is arranged on the turntable, and the turntable can follow the The oscillating motion of the oscillating member produces a rotational motion.
  • the magnifying mechanism is arranged on the main body and is located in the display, the axis of the first pivot is parallel to the second axis and perpendicular to the first axis, the other end of the swing member is provided with a tooth, and the swing
  • the connecting piece is connected with one end of a linking piece, the other end of the linking piece is connected to the first torsion bar through an opening slot of the body, and the linking piece is arranged in parallel with the first pivot;
  • the The turntable is rotatably mounted on the body through a second pivot, the axis of the first pivot is parallel to the second axis and perpendicular to the first axis, the turntable has a gear part engaged with the tooth part, and the turntable has a disk portion for the sensing element to be provided.
  • the first torsion bar and the second torsion bar are respectively capable of elastic bending when the torque wrench is pulled, the length of the second torsion bar is less than the length of the first torsion bar, and the driving device is different from the driving device.
  • the connecting portion has a first set of holes and a second set of holes arranged in parallel, the first torsion bar is provided with a first fixed end away from its end to engage with the first set of holes,
  • the second torsion bar has a second fixed end and a first catch portion, the second fixed end is engaged with the second set hole, the first catch portion is snap-connected with the release device;
  • the release device Including a lever, a holding piece and a release piece, the lever is pivoted on the first torsion bar, and can move between a first position and a second position, in the first position, the lever and the The first latching portion is buckled, and the release device is in a holding state.
  • the lever When in the second position, the lever is disconnected from the first latching portion, and the release device is in the disconnected state; the lever has a first Two latching portions and an abutting portion, the pushing member is elastically disposed between the abutting portion and the first torsion bar, so as to keep the second latching portion in a fastened connection with the first latching portion
  • the release piece At the first position, the release piece is disposed on the body, and when the torque wrench is pulled to reach the preset torque value, the release piece can abut against the lever, so as to urge the first latching portion and the The two latching parts generate the disconnected state.
  • FIG. 1 is a schematic diagram of the appearance of a first embodiment of a torque wrench for digitally displaying a preset torque according to the present invention
  • FIG. 2 is a schematic structural exploded view of the first embodiment of the torque wrench for digitally displaying the preset torque according to the present invention
  • Fig. 3 is a partial cross-sectional schematic diagram taken along section line 3-3 of Fig. 1;
  • Fig. 4 is a partial cross-sectional schematic diagram taken along section line 4-4 of Fig. 1;
  • Fig. 5 is the partial cross-sectional schematic diagram taken along the 5-5 section line of Fig. 1;
  • FIG. 6 is a schematic diagram of the first embodiment of the torque wrench digitally displaying the preset torque according to the present invention, showing that the protective cover is in the open position, and the adjusting member is exposed to facilitate torque adjustment;
  • FIG. 7 is a schematic perspective view of the first embodiment of the torque wrench for digitally displaying the preset torque according to the present invention, showing that the first torsion bar is driven by the adjusting member to shift relative to the main body, thereby adjusting the torque value;
  • FIG. 8 is a schematic exploded view of the structure of the second embodiment of the torque wrench for digitally displaying the preset torque according to the present invention.
  • 9A is a schematic perspective view of the partial structure of the second embodiment of the torque wrench for digitally displaying the preset torque according to the present invention, showing that the oscillating member swings to one side relative to the turntable;
  • 9B is a schematic perspective view of the partial structure of the second embodiment of the torque wrench for digitally displaying the preset torque according to the present invention, showing that the swinging member swings at the other side relative to the turntable;
  • FIG. 10 is a partial cross-sectional schematic diagram of the second embodiment of the torque wrench for digitally displaying the preset torque according to the present invention.
  • FIG. 11 is a partially enlarged schematic view of the structure of the second embodiment of the torque wrench for digitally displaying the preset torque according to the present invention, showing the main structure of the magnifying mechanism.
  • 100 torque wrench; 10, body; 10a, first outer side; 10b, second outer side; 11, accommodating space; 111, inner wall; 12, first end; 13, second end; 14, operating hole; 15, the first pivot hole; 16, the sensing hole; 17, the holding piece; 171, the fixing hole; 18, the positioning device; 20, driving device; 21, driving part; 22, connecting part; 221, the first set of holes; 222, the second set of holes; 23, the first torsion bar; 231, the end; 232, the first fixed end; 233 234, the second pivot hole; 235, the groove; 236, the accommodating hole; 24, the second torsion bar; 241, the second fixed end; 242, the first latching part; 30, Release device; 31, lever; 311, second latching part; 312, abutting part; 32, jacking part; 33, releasing part; 34, pin; 40, torque adjusting device; 41, adjusting part; 411, Spiral tooth; 412, meshing area; 413, toggle area; 42, spacer; 43, shaft; 50, torque sensing device 51
  • the present invention is a first embodiment of a torque wrench 100 for digitally displaying a preset torque, which includes a main body 10 , a driving device 20 , a releasing device 30 , and a torque adjusting device 40 and a torque sensing device 50 .
  • the body 10 is hollow and has an accommodating space 11 .
  • the body 10 is provided with a first end 12 and a second end 13 away from the first end 12 along a first axis L1.
  • An operation hole 14 is formed between the first end 12 and the second end 13.
  • the operation hole 14 is along the A second axis L2 perpendicular to the first axis L1 is open to the top side of the body 10 .
  • the main body 10 is provided with a first outer side surface 10a and a second outer side surface 10b along a direction of a third axis L3 perpendicular to the first axis L1 and the second axis L2, and the main body 10 is provided with a first pivot
  • the hole 15 penetrates through the first outer side surface 10 a and the second outer side surface 10 b , and the first pivot hole 15 communicates with the accommodating space 11 .
  • the driving device 20 has a driving part 21 and a connecting part 22 , the driving part 21 can drive the fastener, and the connecting part 22 is provided with a first torsion bar 23 and a second torsion bar 24 respectively extending into the main body 10 . accommodating space 11.
  • the driving part 21 is a reversing ratchet type
  • the connecting part 22 has a first set of holes 221 and a second set of holes 222 arranged in parallel and spaced apart.
  • the first torsion bar 23 has an end 231 and a first fixed end 232 away from the end 231 .
  • the first fixed end 232 is combined with the first set of holes 221 to connect the first torsion bar 23 with the connecting portion 22.
  • the end 231 extends into the main body 10 and has a non-circumferential tooth slot 233.
  • the non-circumferential tooth grooves 233 are semicircular helical tooth grooves.
  • a second pivot hole 234 is provided between the first torsion bar 23 , the end 231 and the first fixed end 232 , and the second pivot hole 234 is disposed along a direction parallel to the second axis L2 .
  • the length of the second torsion bar 24 is smaller than that of the first torsion bar 23 .
  • the second torsion bar 24 has a second fixed end 241 and a first latching portion 242 .
  • the second fixed end 241 is coupled to the second set hole 222 , so that the second torsion bar 24 is connected with the connecting part 22 , and the first locking part 242 is connected with the releasing device 30 by snapping.
  • the first torsion bar 23 and the second torsion bar 24 are respectively capable of elastically bending when the torque wrench 100 is pulled, and because the length of the second torsion bar 24 is smaller than the length of the first torsion bar 23, the length of the second torsion bar 24 is The amount of elastic deformation is smaller than that of the first torsion bar 23 .
  • the release device 30 is disposed between the first torsion bar 23 and the main body 10 and selectively engages with the second torsion bar 24.
  • the release device 30 can be connected with the second torsion bar 24.
  • the second torsion bar 24 is in a disconnected state.
  • the release device 30 includes a lever 31 , a holding piece 32 and a release piece 33 .
  • the lever 31 is pivoted to the second pivot hole 234 of the first torsion bar 23 through a pin 34 , and It can move between a first position and a second position. In the first position, the lever 31 is buckled with the first latching portion 242, and the release device 30 is in the holding state.
  • the lever 31 has a second latching portion 311 and an abutting portion 312 , and the pressing member 32 is elastically disposed between the abutting portion 312 and a groove 235 of the first torsion bar 23 for the second latching
  • the portion 311 remains buckled with the first latching portion 242 at the first position, and the release member 33 is disposed in the main body 10 .
  • the holding member 32 is a spring
  • the releasing member 33 is a screw, which is screwed to the main body 10 and faces the accommodating space 11 .
  • the release member 33 can abut against the lever 31 to promote the first locking of the second torsion bar 24
  • the detent portion 242 is disconnected from the second detent portion 311 of the lever 31, indicating that the torque value has reached the set state.
  • the torsion adjusting device 40 is rotatably disposed on the main body 10 and connected to the first torsion bar 23 .
  • the torsion adjusting device 40 includes an adjusting member 41 and two spacers 42 .
  • the adjusting member 41 has a helical tooth 411 distributed in the circumferential direction of the adjusting member 41.
  • the adjusting member 41 is pivoted to the first pivot hole 15 of the main body 10 through a rotating shaft 43 along the third axis L3, so that the adjusting member 41 is rotated and installed On the main body 10 and partially exposed to the operating hole 14 , the adjusting member 41 includes an engaging area 412 inside the main body 10 and a toggle area 413 outside the main body 10 in the circumferential direction.
  • the helical teeth 411 of the adjusting member 41 are engaged with the non-circumferential tooth grooves 233 .
  • the end 231 of the first torsion bar 23 is adjusted to be offset relative to the main body 10 , thereby adjusting the relationship between the lever 31 and the release member 33 .
  • the spacer 42 is sleeved on the rotating shaft 43 between the two ends of the helical tooth 411 and the main body 10 .
  • the engaging area 412 of the adjusting member 41 can drive the end 231 of the first torsion bar 23 to offset relative to the body 10, so as to adjust the lever 31 of the release device 30 and the release member 33 distances.
  • the torque wrench 100 applies a larger torque value Only when the lever 31 and the release member 33 are touched and disconnected can they be disconnected; on the contrary, when the end 231 of the first torsion bar 23 is driven by the adjustment member 41 to move in the direction of the second outer side 10b, so that the distance between the lever 31 and the release member 33 When it is closer, when the torque wrench 100 applies a relatively small torque value, the lever 31 and the release member 33 can be contacted and disconnected. Accordingly, the torque value of the torque wrench 100 can be set by rotating the adjusting member 41 .
  • the torque sensing device 50 is disposed on the main body 10 .
  • the torque sensing device 50 can sense the torque value of the torque wrench 100 and display the torque value through a display 51 .
  • the torque sensing device 50 senses the displacement change of the first torsion bar 23, and displays the torque value on the display 51, so that the user can directly understand the setting state of the current torque value, which is convenient for operation.
  • the torque sensing device 50 includes the display 51 , a circuit board 52 , a processing unit 53 , a power supply 54 , a sensing element 55 , and a sensed element 56 .
  • the operation hole 14 and the display 51 are located on the same side of the body 10 .
  • the circuit board 52 , the processing unit 53 and the power supply 54 are arranged in the display 51 , the display 51 and the processing unit 53 are electrically connected to the circuit board 52 , and the display 51 is electrically connected to the sensing element 55 , and the sensing element 56 is arranged in the first A torsion bar 23 is displaced therewith.
  • the second end 13 of the main body 10 is provided with a sensing hole 16 , the sensing hole 16 communicates with the accommodating space 11 of the main body 10 along the direction parallel to the second axis L2 , and the sensing hole 16 is approximately The upper part is also parallel to the operation hole 14 . Accordingly, the sensing element 55 non-contactly senses the displacement change of the sensing element 56 through the sensing hole 16 to generate a torque signal, and the display 51 displays the torque value according to the torque signal.
  • the mutual induction between the sensing element 55 and the sensed element 56 may also be light sensing or magnetic field sensing.
  • the sensing element 55 includes light emitting and light receiving functions
  • the sensed element 56 includes a grating structure.
  • the corresponding optical feature is generated and received by the sensing element 55 to generate a corresponding optical signal.
  • the optical signal is processed by the processing unit 53, converted into a torque signal, and then displayed by the display 51.
  • the corresponding torque value is completed to complete the optical sensing first. Changes in the displacement of the torsion bar 23 .
  • the sensing element 55 is a magnetic sensor
  • the sensed element 56 is a magnet.
  • the magnetic sensor senses two The change of the magnetic field between them generates a corresponding voltage signal
  • the processing unit 53 can process and convert the voltage signal into a torque signal, and then the display 51 displays the corresponding torque value, so as to complete the magnetic induction of the displacement of the first torsion bar 23 Variety.
  • the present invention adopts the non-contact sensing of the displacement change of the first torsion bar 23 to detect the corresponding torsion value, so it can avoid environmental factors from affecting the sensing effect, accurately present the torsion value, and at the same time, due to the non-contact wear and tear problem, but also increase the service life.
  • the main body 10 further includes a holding member 17 sleeved on the second end 13 of the main body 10 for the user to hold and operate conveniently.
  • the present invention further includes a holding device 60 .
  • the holding device 60 is disposed in the accommodating space 11 along a direction parallel to the second axis L2 and located in the accommodating space 11 . between the first torsion bar 23 and the body 10 .
  • the holding device 60 includes a top ball 61 and a spring 62, and a receiving hole 236 is provided on the side of the end 231 of the first torsion bar 23 that is different from the non-circumferential tooth slot 233.
  • the top ball 61 and the spring 62 are provided in the receiving hole 236.
  • the hole 236 is formed, and the spring 62 makes the top ball 61 abut against an inner wall 111 of the accommodating space 11 , so as to maintain the engaging state of the adjusting member 41 and the non-circumferential tooth slot 233 .
  • the present invention further includes a protective cover 70 that can move relative to the main body 10 in a closed position and an open position.
  • a protective cover 70 that can move relative to the main body 10 in a closed position and an open position.
  • the protective cover 70 covers the operation hole 14 and the adjusting member 41 to avoid accidental touches and also has the effect of dustproofing; with reference to FIG. 6 , when in the open position, The protective cover 70 is in an upright shape, so that the adjusting member 41 is exposed to the main body 10 for the user to operate.
  • the protective cover 70 has a pivot portion 71 pivotally disposed on one side of the display 51 , and a concave abutting portion 72 is provided away from the pivot portion 71 .
  • the protective cover 70 further includes a limiting device 73 , and the limiting device 73 can limit the rotation of the adjusting member 41 when the cover is in the closed position.
  • the limiting device 73 includes a J-shaped pressing member 731 .
  • the pressing member 731 has a fixed end 732 and a pressing end 733 .
  • the fixed end 732 is fixed to the protective cover 70 , and the pressing end 733 can be elastically pressed against the protective cover 70 .
  • the adjusting member 41 is used to prevent the adjusting member 41 from rotating, so as to ensure the accuracy of the torque value.
  • the present invention further includes a positioning device 18 , which is disposed between the holding member 17 and the protective cover 70 to keep the protective cover 70 in the closed position.
  • the positioning device 18 includes a limiting member 181 and at least one elastic body 182 , the limiting member 181 is U-shaped, there are two elastic bodies 182 , and the two end feet 181 a of the limiting member 181 are in the same direction.
  • the elastic body 182 is disposed in the two fixing holes 171 of the holding member 17, and the elastic body 182 is respectively held against the end feet 181a of the limiting member 181, so that the limiting member 181 is different from an abutting edge 181b of the end legs 181a. Abutting toward the abutting portion 72 , so that the protective cover 70 is fixed and kept in the closed position.
  • the torsion force sensing device 50 further includes an amplifying mechanism 57 , the amplifying mechanism 57 is arranged on the main body 10 and is connected to the first torsion bar 23 , the sensed element 56 a is arranged in the amplifying mechanism 57 , and the sensed element 56 a The displacement of the first torsion bar 23 is amplified by the amplifying mechanism 57, so that the sensing element 55a senses the displacement change.
  • the magnifying mechanism 57 is disposed on the main body 10 and located in the display 51 .
  • the magnifying mechanism 57 includes a swinging member 571 and a turntable 572 .
  • the swinging member 571 is generally fan-shaped, and one end of the swinging member 571 is swingably disposed in a first through hole 575 of the main body 10 through a first pivot shaft 574, and the axis of the first pivot shaft 574 is parallel to the second axis L and perpendicular to the first axis L1,
  • the other end of the swing member 571 is provided with a tooth portion 571a.
  • the swinging member 571 is connected to the first torsion bar 23 along the direction parallel to the second axis L2, and can swing relative to the body 10 with the displacement of the first torsion bar 23.
  • the turntable 572 is disposed along the direction parallel to the second axis L2 on the body 10. body 10 .
  • the sensed element 56 a is disposed on the turntable 572 , and the turntable 572 can generate a rotating motion with the swing of the swinging member 571 .
  • the amplifying mechanism 57 further includes a linking member 573 .
  • a connecting hole 571b is formed between the two ends of the swinging member 571 for connecting to one end of the linking member 573 .
  • the other end of the linking member 573 penetrates an opening slot 576 of the main body 10 and the hole slot of the first torsion bar 23 577 is connected, so that the swinging member 571 and the first torsion bar 23 are in a linked relationship through the linking member 573, that is, the swinging member 571 can swing with the displacement of the first torsion bar 23 and with the first pivot 574 as the center, wherein,
  • the linking member 573 is arranged in parallel with the first pivot shaft 574 .
  • the turntable 572 rotates through a second pivot shaft 578 through a second through hole 579 formed in the main body 10.
  • the axis of the second pivot shaft 578 is parallel to the second axis L2 and perpendicular to the first axis L1, that is, the second pivot shaft 578 is connected to the first axis L1.
  • a pivot shaft 574 and a linking member 573 are in a parallel relationship with each other.
  • the turntable 572 has a gear portion 572a that meshes with the toothed portion 571a.
  • the diameter is larger than that of the gear portion 572a, and the sensing element 56a is substantially disposed on the periphery of the disc portion 572b for the sensing element 55a to sense in a non-contact manner.
  • the oscillating member 571 swings according to the displacement of the first torsion bar 23 through the linkage 573 , so that the tooth portion 571a drives the gear
  • the gear portion 572a rotates, and in this embodiment, the number of teeth of the tooth portion 571a is just enough to make the gear portion 572a rotate once. Therefore, when the gear portion 572a is driven one revolution, the disc portion 572b also rotates one revolution. Therefore, the displacement amount of the first torsion bar 23 can be amplified by the amplifying mechanism 57, thereby obtaining the effect of displaying the torque value more precisely.
  • the present invention has the following advantages:
  • the helical teeth 411 of the adjusting member 41 of the present invention mesh with the non-circumferential tooth slots 233 of the first torsion bar 23, so that the adjusting member 41 meshes with the first torsion bar 23 with the non-circumferential tooth slots 233, and accordingly
  • the adjusting member 41 and the first torsion bar 23 have a small meshing area, which can provide the user to rotate the adjusting member 41 quickly and lightly, so that the user can easily adjust the torque value.
  • the adjusting member 41 of the present invention is exposed to the operation hole 14 of the main body 10. In this way, the user can hold the main body 10 and directly rotate the adjusting member 41 with fingers (thumbs), which is quite easy to use. with convenience.
  • the torque sensing device 50 of the present invention adopts non-contact sensing, which can avoid external environment affecting the sensing effect, and has a long service life, so as to realize high-precision torque value setting and judgment.
  • the torsion force sensing device 50 of the present invention utilizes the amplifying mechanism 57 to amplify the displacement of the first torsion bar 23, so as to realize the precise display of the torque value.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Details Of Spanners, Wrenches, And Screw Drivers And Accessories (AREA)

Abstract

本发明提供一种数码显示预设扭力的扭矩扳手，其包括一本体、一驱动装置、一释放装置、一扭力调整装置及一扭力感测装置。扭力调整装置包括一调节件，调节件转动设置于本体，且调节件与驱动装置的第一扭力杆啮合，用以调节第一扭力杆相对本体产生偏移，进而调整预设的扭力值，并由扭力感测装置的显示器所显示，借此达到易于调整扭力值的目的，同时通过显示器便于了解目前扭矩扳手所预设的扭力值。

Description

数码显示预设扭力的扭矩扳手 技术领域
本发明是关于一种扭矩扳手，特别是关于一种数码显示预设扭力的扭矩扳手。
 背景技术
如美国发明专利公告第4,290,329号的“Torque release wrench of the preset type”的预设型扭力扳手，其手柄一端具有接合件，接合件转动设置棘轮头，主梁及次梁的一端相应地分别与接合件连接，且位于手柄内，主梁的长度较次梁长，且两者之间具有释放机构。主梁异于接合件的端部通过螺丝与手柄连接，刻度盘与螺丝连接随其转动，通过旋转刻度盘带动螺丝，进而侧向微调主梁相对手柄的位置，以便改变释放机构作用于次梁的抵压程度，达到调整预设扭力的目的。其中，当扭力扳手驱转至预设扭力时，次梁的自由端与释放机构产生脱离连接关系并发出声响提示使用者。
 技术问题
然而，前述预设型扭力扳手调整扭力的螺丝是位于手柄的侧面位置，故于调整使用时，不甚便利，刻度盘作为扭力值的显示不够直接与精准，不方便使用者判读。
并且，中国台湾实用新型专利第M568759号，公开了一种扭力扳手。其与前述扳手相似，扭力扳手转轴一端的旋钮也是侧向外露于中空管体外，故于扭力调整时也是不方便操作。
 技术解决方案
为解决上述问题，本发明提供一种数码显示预设扭力的扭矩扳手，其以显示器显示扭矩扳手的扭力值，方便使用者观察与判断当前扭力值，且扭力调整装置能够提供使用者快速地调整扭力值。
为达上述目的，本发明于一项实施例中提供一种数码显示预设扭力的扭矩扳手，其包括一本体、一驱动装置、一释放装置、一扭力调整装置及一扭力感测装置。本体沿着一第一轴线设有一第一端及一远离第一端的第二端，第一端与第二端之间设有一操作孔，操作孔沿着一垂直于第一轴线的第二轴线开放于本体；驱动装置具有一驱动部及分别伸入本体的第一端的一第一扭力杆与一第二扭力杆，驱动部能够驱转紧固件，第一扭力杆具有一非全周圆齿槽；释放装置设置于第一扭力杆与该本体之间并选择性与第二扭力杆扣接，当扭矩扳手驱转紧固件达到预设一扭力值时，释放装置能够与第二扭力杆产生断开状态；扭力调整装置能够转动的设于本体且与第一扭力杆连接，扭力调整装置包括一调节件，调节件沿着一垂直于第一轴线与第二轴线的第三轴线转动设置于本体且局部外露于操作孔，调节件与非全周圆齿槽啮合，用以调节该第一扭力杆相对本体产生偏移；以及扭力感测装置设置于本体，扭力感测装置能够感测扭矩扳手的扭力值，于一显示器显示出扭力值。
借此，本发明以显示器显示扭矩扳手的当前扭力值，方便使用者观察与判断。
本发明调节件以非全周圆齿槽与第一扭力杆的末端啮合，据以提供使用者快速且省力地驱转调节件，进调整扭力值。
并且，本发明调节件局部外露于操作孔，提供使用者手握持于本体即能够以手指进行操作，使用上相当便利。
进一步的，该调节件具有分布于其圆周方向上的一螺旋齿，该非全周圆齿槽为螺旋齿槽，该螺旋齿与该非全周圆齿槽啮合，且该调节件的圆周方向包括一位于该本体内啮合区及一位于该本体外的拨动区。
进一步的，该非全周圆齿槽为半圆形，该螺旋齿的两端分别与该本体之间设有一间隔件。
进一步的，还包括一保持装置，该本体设有一容置空间，该保持装置沿着该第二轴线方向设于该第一扭力杆与该本体之间，用以保持该调节件与该非全周圆齿槽的啮合。
进一步的，该第一扭力杆具有一末端，该末端具有该非全周圆齿槽，且异于该非全周圆齿槽的一侧设有一容置孔，该保持装置包括一顶珠与一弹簧，该顶珠与该弹簧设于该容置孔，且该弹簧使该顶珠抵接于该容置空间的一内壁。
进一步的，还包括一防护盖，其能够相对该本体于一盖合位置及一开启位置移动，于该盖合位置时，该防护盖覆盖该操作孔与该调节件，于该开启位置时，该调节件能供使用者操作。
进一步的，还包括一限位装置，于该盖合位置时，该限位装置能够限制该调节件的转动。
进一步的，该限位装置包括一抵压件，该抵压件具有一固定端及一抵压端，该固定端固定于该防护盖，该抵压端能够弹性地抵压于该调节件；该防护盖具有一枢设部枢转地设于该显示器的一侧。
进一步的，还包括一定位装置，该本体包括一握持件套设于该第二端，该定位装置设于该握持件与该防护盖之间，使该防护盖保持于该盖合位置；该防护盖具有一枢设部枢转地设于该显示器的一侧，该防护盖远离该枢设部设有一顶靠部，该定位装置包括一限位件以及至少一弹性体，该弹性体顶持于该限位件，使该限位件朝该顶靠部抵接。
进一步的，该操作孔与该显示器位于该本体的同一侧。
进一步的，该扭力感测装置具有一感测元件、一被感测元件，该显示器与于该感测元件电性连接，该被感测元件能够随该第一扭力杆位移，该感测元件能够以非接触式感测该被感测元件的位移变化产生一扭力讯号，该显示器依据该扭力讯号显示该扭力值。
进一步的，该扭力感测装置包括一电路板、一处理单元及一电源，该电路板、该处理单元与该电源设于该显示器内，该处理单元与该显示器与该电路板电性连接，该本体的第二端设有一感测孔，该感测孔连通于该本体内，该被感测元件设于该第一扭力杆，该感测元件通过该感测孔感测该被感测元件。
进一步的，该扭力感测装置包括一电路板、一处理单元、一电源及一放大机构，该电路板、该处理单元与该电源设于该显示器内，该处理单元与该显示器与该电路板电性连接，该放大机构设于该本体且与该第一扭力杆连接，该被感测元件设于该放大机构，通过该感测元件感测位移变化。
进一步的，该放大机构包括一摆动件及一转盘，该摆动件一端通过一第一枢轴摆动设置于该本体，该摆动件沿着平行于该第二轴线的方向与该第一扭力杆连接，且能够随该第一扭力杆位移相对该本体产生摆动，该转盘沿着平行于该第二轴线的方向设置于该本体，该被感测元件设于该转盘上，该转盘能够随着该摆动件的摆动产生旋转动作。
进一步的，该放大机构设于本体且位于该显示器内，该第一枢轴的轴线平行于该第二轴线且垂直于该第一轴线，该摆动件的另一端设有一齿部，且该摆动件与一连动件的一端连接，该连动件的另一端穿伸于该本体的一开口槽与该第一扭力杆连接，且该连动件与该第一枢轴呈平行设置；该转盘通过一第二枢轴转动设于该本体，该第一枢轴的轴线平行于该第二轴线且垂直于该第一轴线，该转盘具有一齿轮部与该齿部啮合，以及该转盘具有一供该被感测元件设置的圆盘部。
进一步的，该第一扭力杆与该第二扭力杆分别能够于该扭矩扳手扳动时产生弹性弯曲，该第二扭力杆的长度小于该第一扭力杆的长度，该驱动装置异于该驱动部设有一连接部，该连接部具有一第一组设孔及一并列设置的第二组设孔，该第一扭力杆远离其末端设有一第一固定端与该第一组设孔接合，该第二扭力杆具有一第二固定端及一第一卡掣部，该第二固定端与该第二组设孔接合，该第一卡掣部与该释放装置卡扣连接；该释放装置包括一杠杆、一顶持件及一释放件，该杠杆枢设于该第一扭力杆，且能够于一第一位置及一第二位置之间动作，于该第一位置时，该杠杆与该第一卡掣部扣接，该释放装置处于保持状态，于该第二位置时，该杠杆与该第一卡掣部断开，该释放装置处于所述断开状态；该杠杆具有一第二卡掣部及一抵靠部，该顶持件弹性地设于该抵靠部与该第一扭力杆之间，用以使该第二卡掣部保持与该第一卡掣部扣接位于该第一位置，该释放件设置于该本体，当该扭矩扳手扳动达到预设的该扭力值时，该释放件能够抵接于该杠杆，以促使该第一卡掣部与该第二卡掣部产生所述断开状态。
 附图说明
图1为本发明数码显示预设扭力的扭矩扳手第一实施例外观示意图；
图2为本发明数码显示预设扭力的扭矩扳手第一实施例结构分解示意图；
图3为沿图1的3-3剖面线所取的局部剖面示意图；
图4为沿图1的4-4剖面线所取的局部剖面示意图；
图5为沿图1的5-5剖面线所取的局部剖面示意图；
图6为本发明数码显示预设扭力的扭矩扳手第一实施例使用状态示意图，显示防护盖于开启位置，并使调节件露出方便进行扭力调整；
图7为本发明数码显示预设扭力的扭矩扳手第一实施例的透视示意图，显示第一扭力杆受调节件带动相对本体偏移，进而调整扭力值；
图8为本发明数码显示预设扭力的扭矩扳手第二实施例结构分解示意图；
图9A为本发明数码显示预设扭力的扭矩扳手第二实施例局部结构透视示意图，显示摆动件相对转盘摆动于一侧位置；
图9B为本发明数码显示预设扭力的扭矩扳手第二实施例局部结构透视示意图，显示摆动件相对转盘摆动于另一侧位置；
图10为本发明数码显示预设扭力的扭矩扳手第二实施例局部剖面示意图；
图11为本发明数码显示预设扭力的扭矩扳手第二实施例结构的局部放大示意图，显示放大机构主要结构。
附图标记说明
100、扭矩扳手；10、本体；10a、第一外侧面；10b、第二外侧面；11、容置空间；111、内壁；12、第一端；13、第二端；14、操作孔；15、第一枢孔；16、感测孔；17、握持件；171、固定孔；18、定位装置；181、限位件；181a、端脚；181b、抵缘；182、弹性体；20、驱动装置；21、驱动部；22、连接部；221、第一组设孔；222、第二组设孔；23、第一扭力杆；231、末端；232、第一固定端；233、非全周圆齿槽；234、第二枢孔；235、凹槽；236、容置孔；24、第二扭力杆；241、第二固定端；242、第一卡掣部；30、释放装置；31、杠杆；311、第二卡掣部；312、抵靠部；32、顶持件；33、释放件；34、销；40、扭力调整装置；41、调节件；；411、螺旋齿；412、啮合区；413、拨动区；42、间隔件；43、转轴；50、扭力感测装置51、显示器；52、电路板；53、处理单元；54、电源；55、感测元件；56、被感测元件；56、被感测元件；57、放大机构；571、摆动件；571a、齿部；571b、连设孔；572、转盘；572a、齿轮部；572b、圆盘部；573、连动件；574、第一枢轴；575、第一穿孔；576、开口槽；577、孔槽；578、第二枢轴；579、第二穿孔；60、保持装置；61、顶珠；62、弹簧；70、防护盖；71、枢设部；72、顶靠部；73、限位装置；731、抵压件；732、固定端733、抵压端；L1、第一轴线；L2、第二轴线；L3、第三轴线。
 本发明的最佳实施方式
以下参照各附图详细描述本发明的示例性实施例，且不意图将本发明的技术原理限制于特定公开的实施例，本发明的范围仅由权利要求范围限制，涵盖了替代、修改和等同物。
请参阅图1至图7所示，本发明为一种数码显示预设扭力的扭矩扳手100的第一实施例，其包括一本体10、一驱动装置20、一释放装置30、一扭力调整装置40及一扭力感测装置50。
本体10，为中空状并具有一容置空间11。本体10沿着一第一轴线L1设有一第一端12及一远离第一端12的第二端13，第一端12与第二端13之间设有一操作孔14，操作孔14沿着一垂直于第一轴线L1的第二轴线L2开放于本体10的顶侧。另外，本体10沿着一垂直于第一轴线L1与第二轴线L2的第三轴线L3的方向上分隔设置一第一外侧面10a与一第二外侧面10b，且本体10设有一第一枢孔15贯穿于第一外侧面10a与第二外侧面10b，第一枢孔15连通于容置空间11。
驱动装置20，具有一驱动部21及一连接部22，驱动部21能够驱转紧固件，且连接部22设有一第一扭力杆23、一第二扭力杆24且分别伸入本体10的容置空间11。于本发明实施例中，驱动部21为换向棘轮式，连接部22具有一第一组设孔221及一并列分隔设置的第二组设孔222。
第一扭力杆23，具有一末端231及一远离末端231的第一固定端232。第一固定端232结合于第一组设孔221，使第一扭力杆23与连接部22连接，末端231伸入本体10并具有一非全周圆齿槽233，于本发明实施例中，非全周圆齿槽233为半圆形的螺旋齿槽。另外，第一扭力杆23与末端231与第一固定端232之间设有一第二枢孔234，第二枢孔234沿着平行于第二轴线L2的方向设置。
第二扭力杆24，长度小于第一扭力杆23的长度，第二扭力杆24具有一第二固定端241及一第一卡掣部242，第二固定端241结合于第二组设孔222，使第二扭力杆24与连接部22连接，第一卡掣部242与释放装置30卡扣连接。其中，第一扭力杆23与第二扭力杆24分别能够于扭矩扳手100扳动时产生弹性弯曲，且因第二扭力杆24长度小于第一扭力杆23的长度，故第二扭力杆24的弹性变形量较第一扭力杆23的弹性变形量小。
释放装置30，设置于第一扭力杆23与本体10之间并选择性与第二扭力杆24扣接，当扭矩扳手100驱转紧固件达到预设一扭力值时，释放装置30能够与该第二扭力杆24产生断开状态。配合图2及图3所示，释放装置30包括一杠杆31、一顶持件32及一释放件33，杠杆31通过一销34枢设于第一扭力杆23的第二枢孔234，且能够于一第一位置及一第二位置之间动作，于第一位置时，杠杆31与第一卡掣部242扣接，释放装置30处于保持状态，于第二位置时，杠杆31与第一卡掣部242断开，释放装置30处于断开状态。杠杆31具有一第二卡掣部311及一抵靠部312，顶持件32弹性地设于抵靠部312与第一扭力杆23的一凹槽235之间，用以使第二卡掣部311保持扣接于第一卡掣部242位于第一位置，释放件33设置于本体10内。于本发明实施例中，顶持件32为弹簧，释放件33为螺丝，螺固于本体10并朝向容置空间11。当扭矩扳手100扳动使第一扭力杆23与第二扭力杆24弯曲状并达到预设的扭力值时，释放件33能够抵接于杠杆31，以促使第二扭力杆24的第一卡掣部242与杠杆31的第二卡掣部311产生断开，表示扭力值已达到设定的状态。
扭力调整装置40，能够转动的设于本体10且与第一扭力杆23连接，扭力调整装置40包括一调节件41及两个间隔件42。调节件41具有一分布于调节件41圆周方向上的螺旋齿411，调节件41沿着第三轴线L3并通过一转轴43枢设于本体10的第一枢孔15，使调节件41转动设置于本体10并局部外露于操作孔14，此时的调节件41的圆周方向包括有一位于本体10内的啮合区412及一位于本体10外的拨动区413。调节件41的螺旋齿411与非全周圆齿槽233啮合，通过旋转调节件41，用以调节第一扭力杆23的末端231相对本体10产生偏移，进而调整杠杆31与释放件33之间的距离。间隔件42套设于转轴43设于螺旋齿411的两端与本体10之间，间隔件42能够防止调节件41沿第三轴线L3方向位移，如图5所示。
其中，当使用者转动调节件41的拨动区413时，调节件41的啮合区412能够带动第一扭力杆23的末端231相对本体10偏移，以便调整释放装置30的杠杆31与释放件33的距离。举例来说，当第一扭力杆23的末端231被调节件41带动往第一外侧面10a方向位移，使得杠杆31与释放件33的距离较远时，扭矩扳手100施加至较大的扭力值时才能够让杠杆31与释放件33碰触产生断开；反之，当第一扭力杆23的末端231被调节件41带动往第二外侧面10b方向位移，使得杠杆31与释放件33的距离较近时，扭矩扳手100只要施加较小的扭力值时，即可让杠杆31与释放件33碰触而产生断开。据此通过转动调节件41，能实现扭矩扳手100的扭力值的设定。
扭力感测装置50，设置于本体10，扭力感测装置50能够感测扭矩扳手100的扭力值，并由一显示器51显示出扭力值。于本实施例中，扭力感测装置50感测第一扭力杆23的位移变化，并于显示器51显示出扭力值，据以供使用者直接了解当前扭力值的设定状态，方便作业使用。如图2及图3所示，扭力感测装置50包括所述显示器51、一电路板52、一处理单元53及一电源54、一感测元件55、一被感测元件56。操作孔14与显示器51位于本体10的同一侧。电路板52、处理单元53与电源54设于显示器51内，显示器51与处理单元53与电路板52电性连接，且显示器51与感测元件55电性连接，被感测元件56设于第一扭力杆23而随其位移。于本发明实施例中，本体10的第二端13设有一感测孔16，感测孔16沿平行于第二轴线L2方向连通于本体10的容置空间11内，且感测孔16大致上也与操作孔14平行。据此，感测元件55通过感测孔16非接触式感测被感测元件56的位移变化而产生一扭力讯号，显示器51依据扭力讯号显示扭力值。
需说明的是，感测元件55与被感测元件56相互感应的方式也可以是光感测或是磁场感应。如为光感测，感测元件55包括光发射与光接收功能，被感测元件56包括光栅结构，当被感测元件56位移时，光线发射至光栅结构，通过光栅结构的反射、遮光所产生对应的光学特征并通过感测元件55接收而相对应产生光讯号，此光讯号通过处理单元53处理、转换成扭力讯号再由显示器51显示出对应的扭力值，以完成光感测第一扭力杆23的位移量的变化。若为磁场感应，感测元件55磁感应器，被感测元件56则为磁铁，磁感应器与磁铁之间具有非接触的固定间隙，当磁铁随着第一扭力杆23位移时，磁感应器感应两者间的磁场变化而产生对应的电压讯号，处理单元53依据电压讯号而能处理、转换成扭力讯号，再由显示器51显示出对应的扭力值，以完成磁感应第一扭力杆23的位移量的变化。
因此，本发明采用非接触式感测第一扭力杆23的位移变化，以侦测出对应的扭力值，故能够避免环境因素影响感测效果，精准的呈现扭力值，同时因无接触磨耗的问题，也增加使用的寿命。
本发明于一项实施例中，本体10还包括一握持件17，其套设于本体10的第二端13，以供使用者方便握持操作。
请参阅配合图2及图3所示，本发明于一项实施例中，还包括一保持装置60，保持装置60沿着平行于第二轴线L2的方向设于容置空间11内，且位于第一扭力杆23与本体10之间。其中，保持装置60包括一顶珠61与一弹簧62，第一扭力杆23的末端231异于非全周圆齿槽233的一侧设有一容置孔236，顶珠61与弹簧62设于容置孔236，且弹簧62使顶珠61抵接于容置空间11的一内壁111，用以保持调节件41与非全周圆齿槽233的啮合状态。
本发明于一项实施例中，还包括一防护盖70，其能够相对本体10于一盖合位置及一开启位置移动。配合参照图1，防护盖70于盖合位置时，防护盖70覆盖操作孔14与调节件41，避免误触情形发生，同时也具有防尘的功效；配合参照图6，于开启位置时，防护盖70呈直立状，使调节件41外露于本体10供使用者操作。于本发明实施例中，防护盖70具有一枢设部71枢转地设于显示器51的一侧，远离枢设部71设有一内凹状的顶靠部72。并且，防护盖70还包括一限位装置73，于盖合位置时，限位装置73能够限制调节件41的转动。限位装置73包括一呈J字形的抵压件731，抵压件731具有一固定端732及一抵压端733，固定端732固定于防护盖70，抵压端733能够弹性地抵压于调节件41，用以使调节件41不会转动，确保扭力值的精准。
本发明于一项实施例中，还包括一定位装置18，其设于握持件17与防护盖70之间，使防护盖70保持于盖合位置。于本发明实施例中，定位装置18包括一限位件181以及至少一弹性体182，限位件181为U字形，弹性体182为两个，限位件181同方向的两个端脚181a与弹性体182设置于握持件17的两个固定孔171内，弹性体182分别顶持于限位件181的端脚181a，使限位件181异于端脚181a的一抵缘181b于朝顶靠部72抵接，以使防护盖70固定保持于盖合位置。
如图8至图11所示，为本发明第二实施例，其与第一实施例中相同的元件标号代表相同的元件、结构与功能，于本实施例中不再赘述。于本实施例中，扭力感测装置50还包括一放大机构57，放大机构57设于本体10且与第一扭力杆23连接，被感测元件56a设于放大机构57，被感测元件56a通过放大机构57放大第一扭力杆23的位移，使感测元件55a感测到位移变化。
其中，放大机构57设于本体10且位于显示器51内，放大机构57包括一摆动件571及一转盘572。摆动件571概呈扇形，其一端通过一第一枢轴574摆动设置于本体10的一第一穿孔575，且第一枢轴574的轴线平行于第二轴线L且垂直于第一轴线L1，摆动件571的另一端设有一齿部571a。摆动件571沿着平行于第二轴线L2的方向与第一扭力杆23连接，且能够随第一扭力杆23位移相对本体10产生摆动，转盘572沿着平行于第二轴线L2的方向设置于本体10。被感测元件56a是设置于转盘572上，且转盘572能够随着摆动件571的摆动产生旋转动作。
于本实施例中，放大机构57更包括一连动件573。摆动件571于两端间设一连设孔571b，以供连接于连动件573的一端，连动件573的另一端穿伸于本体10的一开口槽576与第一扭力杆23的孔槽577连接，使摆动件571与第一扭力杆23通过连动件573产生连动关系，即摆动件571能够随第一扭力杆23的位移并以第一枢轴574为中心而摆动，其中，连动件573与第一枢轴574呈平行设置。转盘572通过一第二枢轴578转动设于本体10的一第二穿孔579，第二枢轴578的轴线平行于第二轴线L2且垂直于第一轴线L1，即第二枢轴578与第一枢轴574、连动件573互呈平行关系，转盘572具有一齿轮部572a与齿部571a啮合，以及转盘572具有一供被感测元件56a设置的圆盘部571b，圆盘部572b外径大于齿轮部572a，被感测元件56a大致上设于圆盘部572b的周缘上供感测元件55a无接触式地感应。
借此，参照配合图9A、图9B及图11所示，当第一扭力杆23位移，通过连动件573使摆动件571依据第一扭力杆23的位移而摆动，使齿部571a驱使齿轮部572a产生旋转，且于本实施例中，齿部571a的齿数恰能够使齿轮部572a转动一圈，因此，当齿轮部572a被带动一圈时，圆盘部572b也就跟着转动一圈，因此通过放大机构57能够放大第一扭力杆23的位移量，据以得到更精密显示扭力值的效果。
综合上述，本发明具有下列优点：
1.本发明调节件41的螺旋齿411与第一扭力杆23的非全周圆齿槽233啮合，以使调节件41以非全周圆齿槽233与第一扭力杆23啮合，据此调节件41与第一扭力杆23啮合面积小，能够提供使用者快速且轻力地驱转调节件41，让使用者便于调整扭力值。
2.本发明调节件41是外露于本体10的操作孔14，如此一来，使用者能够手握持于本体10，直接以手指（大拇指）进行驱转调节件41，使用上相当就手与方便。
3.本发明扭力感测装置50是采无接触式感应，能够避免外在环境影响感测效果，使用寿命长，据以实现高精密的扭力值设定与判断。
本发明扭力感测装置50利用放大机构57，能放大第一扭力杆23的位移量，以便实现精密显示扭力值的表现。
以上所举实施例仅用以说明本发明而已，非用以限制本发明的范围。举凡不违本发明精神所从事的种种修改或改变都属本发明申请专利范围。

Claims (16)

  1. 一种数码显示预设扭力的扭矩扳手，其特征在于，包括：
    一本体，其沿着一第一轴线设有一第一端及一远离该第一端的第二端，该第一端与该第二端之间设有一操作孔，该操作孔沿着一垂直于该第一轴线的第二轴线开放于该本体；
    一驱动装置，其具有一驱动部及分别伸入该本体的第一端的一第一扭力杆与一第二扭力杆，该驱动部能够驱转紧固件，该第一扭力杆具有一非全周圆齿槽；
    一释放装置，是设置于该第一扭力杆与该本体之间并选择性与该第二扭力杆扣接，当该扭矩扳手驱转紧固件达到预设一扭力值时，该释放装置能够与该第二扭力杆产生断开状态；
    一扭力调整装置，能够转动的设于该本体且与该第一扭力杆连接，该扭力调整装置包括一调节件，该调节件沿着一垂直于该第一轴线与该第二轴线的第三轴线转动设置于该本体且局部外露于该操作孔，该调节件与该非全周圆齿槽啮合，用以调节该第一扭力杆相对该本体产生偏移；以及
    一扭力感测装置，设置于该本体，该扭力感测装置能够感测该扭矩扳手的该扭力值，于一显示器显示出该扭力值。
  2. 如权利要求1所述的数码显示预设扭力的扭矩扳手，其特征在于，该调节件具有分布于其圆周方向上的一螺旋齿，该非全周圆齿槽为螺旋齿槽，该螺旋齿与该非全周圆齿槽啮合，且该调节件的圆周方向包括一位于该本体内啮合区及一位于该本体外的拨动区。
  3. 如权利要求2所述的数码显示预设扭力的扭矩扳手，其特征在于，该非全周圆齿槽为半圆形，该螺旋齿的两端分别与该本体之间设有一间隔件。
  4. 如权利要求1所述的数码显示预设扭力的扭矩扳手，其特征在于，还包括一保持装置，该本体设有一容置空间，该保持装置沿着该第二轴线方向设于该第一扭力杆与该本体之间，用以保持该调节件与该非全周圆齿槽的啮合。
  5. 如权利要求4所述的数码显示预设扭力的扭矩扳手，其特征在于，该第一扭力杆具有一末端，该末端具有该非全周圆齿槽，且异于该非全周圆齿槽的一侧设有一容置孔，该保持装置包括一顶珠与一弹簧，该顶珠与该弹簧设于该容置孔，且该弹簧使该顶珠抵接于该容置空间的一内壁。
  6. 如权利要求4所述的数码显示预设扭力的扭矩扳手，其特征在于，还包括一防护盖，其能够相对该本体于一盖合位置及一开启位置移动，于该盖合位置时，该防护盖覆盖该操作孔与该调节件，于该开启位置时，该调节件能供使用者操作。
  7. 如权利要求6所述的数码显示预设扭力的扭矩扳手，其特征在于，还包括一限位装置，于该盖合位置时，该限位装置能够限制该调节件的转动。
  8. 如权利要求7所述的数码显示预设扭力的扭矩扳手，其特征在于，该限位装置包括一抵压件，该抵压件具有一固定端及一抵压端，该固定端固定于该防护盖，该抵压端能够弹性地抵压于该调节件；该防护盖具有一枢设部枢转地设于该显示器的一侧。
  9. 如权利要求8所述的数码显示预设扭力的扭矩扳手，其特征在于，还包括一定位装置，该本体包括一握持件套设于该第二端，该定位装置设于该握持件与该防护盖之间，使该防护盖保持于该盖合位置；该防护盖具有一枢设部枢转地设于该显示器的一侧，该防护盖远离该枢设部设有一顶靠部，该定位装置包括一限位件以及至少一弹性体，该弹性体顶持于该限位件，使该限位件朝该顶靠部抵接。
  10. 如权利要求1至9中任一项所述的数码显示预设扭力的扭矩扳手，其特征在于，该操作孔与该显示器位于该本体的同一侧。
  11. 如权利要求10所述的数码显示预设扭力的扭矩扳手，其特征在于，该扭力感测装置具有一感测元件、一被感测元件，该显示器与于该感测元件电性连接，该被感测元件能够随该第一扭力杆位移，该感测元件能够以非接触式感测该被感测元件的位移变化产生一扭力讯号，该显示器依据该扭力讯号显示该扭力值。
  12. 如权利要求11所述的数码显示预设扭力的扭矩扳手，其特征在于，该扭力感测装置包括一电路板、一处理单元及一电源，该电路板、该处理单元与该电源设于该显示器内，该处理单元与该显示器与该电路板电性连接，该本体的第二端设有一感测孔，该感测孔连通于该本体内，该被感测元件设于该第一扭力杆，该感测元件通过该感测孔感测该被感测元件。
  13. 如权利要求11所述的数码显示预设扭力的扭矩扳手，其特征在于，该扭力感测装置包括一电路板、一处理单元、一电源及一放大机构，该电路板、该处理单元与该电源设于该显示器内，该处理单元与该显示器与该电路板电性连接，该放大机构设于该本体且与该第一扭力杆连接，该被感测元件设于该放大机构，通过该感测元件感测位移变化。
  14. 如权利要求13所述的数码显示预设扭力的扭矩扳手，其特征在于，该放大机构包括一摆动件及一转盘，该摆动件一端通过一第一枢轴摆动设置于该本体，该摆动件沿着平行于该第二轴线的方向与该第一扭力杆连接，且能够随该第一扭力杆位移相对该本体产生摆动，该转盘沿着平行于该第二轴线的方向设置于该本体，该被感测元件设于该转盘上，该转盘能够随着该摆动件的摆动产生旋转动作。
  15. 如权利要求14所述的数码显示预设扭力的扭矩扳手，其特征在于，该放大机构设于本体且位于该显示器内，该第一枢轴的轴线平行于该第二轴线且垂直于该第一轴线，该摆动件的另一端设有一齿部，且该摆动件与一连动件的一端连接，该连动件的另一端穿伸于该本体的一开口槽与该第一扭力杆连接，且该连动件与该第一枢轴呈平行设置；该转盘通过一第二枢轴转动设于该本体，该第一枢轴的轴线平行于该第二轴线且垂直于该第一轴线，该转盘具有一齿轮部与该齿部啮合，以及该转盘具有一供该被感测元件设置的圆盘部。
  16. 如权利要求12或14所述的数码显示预设扭力的扭矩扳手，其特征在于，该第一扭力杆与该第二扭力杆分别能够于该扭矩扳手扳动时产生弹性弯曲，该第二扭力杆的长度小于该第一扭力杆的长度，该驱动装置异于该驱动部设有一连接部，该连接部具有一第一组设孔及一并列设置的第二组设孔，该第一扭力杆远离其末端设有一第一固定端与该第一组设孔接合，该第二扭力杆具有一第二固定端及一第一卡掣部，该第二固定端与该第二组设孔接合，该第一卡掣部与该释放装置卡扣连接；该释放装置包括一杠杆、一顶持件及一释放件，该杠杆枢设于该第一扭力杆，且能够于一第一位置及一第二位置之间动作，于该第一位置时，该杠杆与该第一卡掣部扣接，该释放装置处于保持状态，于该第二位置时，该杠杆与该第一卡掣部断开，该释放装置处于所述断开状态；该杠杆具有一第二卡掣部及一抵靠部，该顶持件弹性地设于该抵靠部与该第一扭力杆之间，用以使该第二卡掣部保持与该第一卡掣部扣接位于该第一位置，该释放件设置于该本体，当该扭矩扳手扳动达到预设的该扭力值时，该释放件能够抵接于该杠杆，以促使该第一卡掣部与该第二卡掣部产生所述断开状态。
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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4290329A (en) * 1979-10-09 1981-09-22 Snap-On Tools Corporation Torque release wrench of the preset type
CN2920553Y (zh) * 2006-05-15 2007-07-11 谢智庆 具影像显示功能的工具
CN103522232A (zh) * 2013-10-25 2014-01-22 蔡卫进 一种设有扭力显示装置的扳手
CN205630453U (zh) * 2016-03-28 2016-10-12 优钢机械股份有限公司 可校正扭力的扭力扳手
CN107914234A (zh) * 2016-10-07 2018-04-17 米沃奇电动工具公司 转矩扳手
US20200398410A1 (en) * 2019-06-21 2020-12-24 William Tools Co., Ltd. Torque wrench

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4290329A (en) * 1979-10-09 1981-09-22 Snap-On Tools Corporation Torque release wrench of the preset type
CN2920553Y (zh) * 2006-05-15 2007-07-11 谢智庆 具影像显示功能的工具
CN103522232A (zh) * 2013-10-25 2014-01-22 蔡卫进 一种设有扭力显示装置的扳手
CN205630453U (zh) * 2016-03-28 2016-10-12 优钢机械股份有限公司 可校正扭力的扭力扳手
CN107914234A (zh) * 2016-10-07 2018-04-17 米沃奇电动工具公司 转矩扳手
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