TWI335857B - - Google Patents

Description

1335857 IX. Description of the Invention: TECHNICAL FIELD OF THE INVENTION The present invention relates to a wrench, and more particularly to an electronic torque wrench having a tripping feel. [Prior Art]

Conventionally, the wrench that can preset the value of the locking torque can be generally classified into two types: mechanical type (for example, U.S. Patent No. 4,485,703, 5,129,293 '543,519) and electronic type (for example, U.S. Patent Nos. 4,495,541, 6,981,436 B2 and 6,968,759 B2), among which mechanical The wrench generally has a tubular member, a rod connected to the tubular member connected to the rod member and aligned with the rod member of the tubular member in a normal state, and a compression capable of applying a pre-pressure amount to the rod member. a spring, when the torque applied by the wrench to the bolt is greater than the pre-stress amount, the alignment of the rod is such that the user is destroyed in a state, and the handle is felt to strike a clear feel of the trip, but The wrench has the problem that the pre-pressure of the compression spring is not easy to accurately set, especially when the compression spring is tired, the problem is more obvious; and the electronic wrench is generally attached to a rod. The upper strain gauge generates a resistance change, and by measuring the applied torque, when the torque applied by the wrench exceeds a predetermined torque value, a processing unit of the wrench is used by A vibration motor, a buzzer or a light member is used to warn the user that the wrench can accurately set the preset torque value electronically, but 'there is no yaw impact on the pipe member due to its lever' 1 The user can't feel (4) the clear and clear feeling of jumping, which may cause the user to stop applying force too late or too early, resulting in overload or insufficient locking torque. Therefore, the user is locking the same set of thread inspection. At 1335857, it is often the case that some bolts are locked too tight, but some bolts are too loose. SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to provide an electronic torque wrench having a tripping feel that produces a clear and direct tripping operation feel like a mechanical torque wrench. The electronic torque wrench 'with a tripping feel of the present invention comprises a tube unit, a working unit, a strain sensing unit, a trip unit, and a central processing early. The tube unit has a surrounding wall extending in an axial direction and surrounding an accommodation space. The working unit is pivotally connected to the surrounding wall, and has a head extending from the accommodating space, a shank portion and a swinging center extending into the accommodating space. The strain sensing unit is disposed on the work order. The trip unit has a driven member disposed on the handle and switchable between a forced state and a tripped state, and the driven member is abutted when the driven member is in the tight state The surrounding wall is such that the handle cannot swing relative to the swing. When the driven member is in the tripped state, the money driving member releases the surrounding wall so that the handle can be swung relative to the swing. , the motion swings to deviate from the axial direction. The central processing unit is disposed on the tube and electrically connected to the strain sensing unit and the trip unit. When the central processing unit determines that the torque sensed by the strain sensing unit is not less than - When the reference value is preset, the central processing unit can control the trip to enable the driven member to switch to the trip state. [Embodiment] The foregoing and other technical contents, features and effects of the present invention are

S 6 1335857 The following detailed description of embodiments with reference to the accompanying drawings will be clearly understood. Before the detailed description is made, it is to be noted that in the following description, similar elements are denoted by the same reference numerals.

1 , 2, 3, which is a preferred embodiment of the electronic torque wrench with a tripping feel of the present invention, the electronic torque wrench having a tripping feel comprises: a official unit 1 〇, a working unit 2 〇, a strain sensing unit, a trip unit 40, a central processing unit 5〇, an input unit 6〇, a display unit 70', and a power supply unit 8〇β/笞 unit 1 〇 have an axis along the axis A surrounding wall u extending toward X and surrounding an accommodation space 12. The working unit 2 is pivotally connected to the surrounding wall u, and has a head 21 extending out of the accommodating space 12, a shank 22 extending in the accommodating space 12, and being connected along the axial direction X. a neck portion 23 between the head portion 21 and the shank portion η, a groove 24 formed in the neck portion 23 along the axial direction X, and

- Swing center, 25' In the present embodiment, the swing center 25 is pivoted to the surrounding alcove by a test piece. - % and ~ sub-master 'a guide groove 222 n disposed along the axial direction X and communicating with the chamber 221 is disposed perpendicular to the transverse direction Y of the axial direction X and is connected to the guide groove (four) through hole 223 ° The strain sensing unit 30 1 right jtfc ” has a body 31 mounted on the groove 24 and a strain gauge mounted on the bank / h / the yoke body 31. It is to be noted that the present invention The strain sensing unit 3ω 3G may also be composed of only the strain 1335857 gauge 32 of the chip, and the strain gauge 32 may be directly attached as in the prior art (for example, US Pat. Nos. 4,495,541, 6,981,436 B2, and 6,968,759 B2). On the side plane of the neck portion 23. The trip unit 40 has a driven member 41' disposed on the handle portion 22 and a control member 42 disposed on the handle portion 22. The driven member 41 There are two balls 411 respectively movably received at the two open ends of the through hole 223, and the balls 411 can be switched between a forced state (see FIG. 2) and a trip state (see FIGS. 4, 5). The control member 42 has an electromagnetic coil 43 disposed in the chamber 221 and electrically connected to the central processing chamber τ, 50. An induction shaft 44 movable in the guide groove 222 and movable between a first state (see FIG. 2) and a second state (see FIG. 5), and a shaft abutting the induction along the axis a compression spring 45 between the rear end of the shaft 44 and the end of the handle 22. The induction shaft 44 has a tapered front end portion 44 of the head portion 21 of the jade unit 2 () outside the front end portion 441 The diameter decreases along the axial direction toward the head η. When the sensing shaft 44 is in the first state, the balls 4 are in the pressing state, when the sensing shaft 44 is in the second state. The ball processing unit 5G is disposed in the accommodation portion 12 of the pipe unit iq, and is electrically connected to the strain gauge 32 and the electromagnetic coil 43. In an example, the central processing unit 5G can be a circuit board, and has a well-known Wyeth bridge, an amplifier, a recorder, a microprocessor, and the like, and is electrically connected to the strain gauge 32 by wires (not shown). The electromagnetic coil 43 is electrically 'however, this is not the focus of the present (4) request, so it will not be described again. 8 The input unit 60 and the display unit 7() are set. The tube unit=upper and is electrically connected to the central processing unit 5〇, through which the user can input a preset reference value of the maximum torque to be input into the central processing unit 50, and the display unit is (4) This part is a common design of the current electronic torque wrench, and will not be described again. The power supply unit 80 is installed in the accommodating space 12, and the power supply unit 80 is electrically connected to the electromagnetic coil 43 and the central processing unit 5. In this embodiment, the power supply unit 5 can be a battery. Thereby, as shown in FIG. 23, when the user uses the head 21 to sleeve-sleeve (not shown), a bolt or the like. The workpiece (not shown) applies a torque, and the central processing unit 5G measures the strain sensing unit % - the torque value is less than the preset reference material, and the central processing unit 5 does not drive the electromagnetic The coil 43 generates a magnetic attraction, and therefore, the induction shaft 44 can be held in the first state 'between the axial direction between the balls 4 ι'. In this case, the induction shaft 44 is the same as the balls 411. Splicing, forcing the cough and other balls 4η to remain in the tight state And pressing the surrounding wall outward/therefore, the work order S 20 cannot be pivoted with the swinging center 25, and is swung relative to the tubular unit 而) and remains parallel to the axial χ on the real f status. Conversely, as shown in FIGS. 3, 4, and 5, when the user applies a force, the central processing unit 50 determines that the measured force value of the strain sensing unit 3 is not less than the preset reference value. At this time, the central processing unit % generates magnetic attraction force to attract the induction shaft 44 compared to the electromagnetic coil 43 to move the arbor shaft 44 from the first state (see FIG. 2) to the second state. Sense 1335857 should move the shaft 44 to the second state of the chamber work, and reduce the (four) magazine 箸 二 # # 二 二 二 二 二 二 二 二 二 二 二 二 二 二 二 二 二 二 二 二 二 二 二 411 411 411 411 411 411 411 411 411 411 411 411 411 411 411 That is, the roller spider 411 abuts against the surrounding wall 11, so that the balls can be switched to the trip state, and the __u is released.

The working unit 2G can swing the "25" as an axis, and the tube member 1G is oscillated to deviate from the axial direction X' to collide with the tube unit 1G. Thereafter, when the user no longer applies force, and the central processing unit When the stop of driving the electromagnetic coil 43 to generate a magnetic attraction force, the elastic force of the compressed projectile 45 can drive the induction shaft 捍 44 to be reversely reset to the _th state to move the balls 41 to the forced state. Thus, the balls can again force the surrounding wall U to make the working unit 2 () substantially axial X (see Fig. 2). Through the above description, the advantages of the present invention can be further summarized as follows: In addition to accurately setting the preset reference value for applying the torsion force in an electronically controlled manner, the movement of the induction shaft 44 can be controlled by the electromagnetic wire 43 to cause the balls 411 to loosen the surrounding wall u in a timely manner. The coughing work unit 20 can be opposite to the tube unit 1 (), thereby allowing the user to feel a direct and unambiguous feeling of jumping off, so that the user of the present case can stop exerting force at an appropriate time according to a clear sense of jumping off the hand. So, this case is used When the same set of bolts are locked, all the bolts can be locked with the same force of force without the problem of overload or insufficient locking torque. Referring to Figure 6, the second preferred embodiment of the present invention The preferred embodiment is similar to the first preferred embodiment in that: 10 1335857 the sensing shaft 44 has a guiding portion 46' movably disposed in the guiding slot 222 and a rod segment 47 connected to the guide segment 46. The guide segment 46 is formed by a guide slider 461 and a striker 462 screwed onto the guide slider 461. The connecting hole 463 is disposed in the axial direction X. The connecting hole 463 has a large aperture portion 464 formed on the guiding slider 461, and a small aperture portion 465 extending through the blocking ring 462 and having a smaller aperture than the large aperture portion 464. .

The connector 47 has a connecting portion 471 housed in the large aperture portion 464, and the connecting portion 471 extends from the shaft portion 472 of the small aperture portion 465. Since the outer diameter of the connecting portion 471 is smaller than the diameter of the large aperture portion 464, and the outer diameter of the shaft portion 472 is also smaller than the aperture of the small aperture portion 465, the rod portion 47 can be opposite to the guiding portion. The slider 46 moves in the lateral direction γ. As shown in FIG. 6, when the sensing shaft 44 is in the first state, the shaft portion 472 of the rod portion 47 is interposed between the balls 々 n along the axial direction.

The ball 411 is switched to the pressing state; as shown in FIG. 7, when the sensing shaft is moved to the second state at 44, the guiding segment a is an axis extending into the receiving rod & 47 The portion 472 is to disengage the balls 4, and the balls 411 are switched to the trip state. In this way, the second preferred embodiment can block the force applied by the balls 411 t to the rod segment 47 in addition to the same purpose and effect as the above-described preferred embodiment. It is not transmitted to the guide segment 46 and the handle 22. In summary, the electronic torsion wrench with the tripping feel of the present invention, 11 c S ) ^ 堇 can be electronically controlled (10) to set the preset reference value for applying the torsion, which can be clearly and directly generated by the mechanical torque wrench. The feeling of tripping operation can indeed achieve the purpose of the invention. - The description of the present invention is only a preferred embodiment of the present invention, and when it is not limited to the embodiment of the present invention, that is, Dafan billion; ^ Ming Yutian scope and invention said (four) Rong 2 The patent is a patent of the present invention. Early 4 effect changes and materials, still

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BRIEF DESCRIPTION OF THE DRAWINGS FIG. 2 is a partial cross-sectional view of the first preferred embodiment of the electronic torque wrench with a tripping feel of the present invention; FIG. 2 is a partial cross-sectional view of the first preferred embodiment FIG. 3 is a schematic diagram of the electronic control of the first preferred embodiment; FIG.

Figure 4 is a view similar to Figure 2, illustrating the movement of the induction shaft to a second state; Figure 5 is a view circle similar to Figure 4, illustrating a work unit of the first preferred embodiment yaw to Figure 6 is a partial cross-sectional view of the electronic torque wrench with a tripping feel of the present invention - a second preferred embodiment; and '7 is a view similar to Figure 6, illustrating the second preferred A work of the embodiment is biased early to collide with a tube unit.

13 1335857 [Explanation of main component symbols] 10 .... ... pipe fitting unit 46 ... guide sliding section 11 ·.. _ ... surrounding wall 461 ... ... guide slider 12 ···· ... accommodating space 462 ··· ... Retaining ring 20 ·····Working unit 463...Connecting hole 21 ····· Head 464·.....large aperture portion 22...handle 465...small aperture portion 221 ··· 47····· ... rod section 222···...guide groove 471...connection portion 223...through hole 472...shaft portion 23··...neck 50.··.... central processing unit 24·· ··...the groove 60 ...the input unit 25 ···· ...the swing center 70 ...the display unit 30 ···the strain sensing unit 80·.·....the power supply unit 31····...the strain body X... ...axial 32 ·... strain gauge Y... ...& direction 4〇.... tripping unit 41 ·_·· ... driven member 411 ··· ...ball 42 ···· ... control Item 43 ··· _ _ ·Electromagnetic coil 44 ···· ...Induction shaft 441... Front end 45 ···· Compression spring 14

Claims (1)

1335857 Revision period: June 1st, 1999 -, - A replenishment of the application (6) 327! 8 application, the replacement of the no-line instructions to replace the page. Ten, the scope of patent application: -1. The hand-held electronic torque wrench comprises: a tube unit having a surrounding wall extending in an axial direction and a space; a working unit pivotally connected to the surrounding wall and having a head extending from the receiving space, a handle extending into the accommodating space, and a swinging center, the handle having a chamber disposed along the axial direction, a guide groove disposed along the axial direction and communicating with the chamber, and a guide a through hole disposed in a transverse direction perpendicular to the direction of the sinus and communicating with the guide groove; a strain sensing unit disposed on the working unit; a trip unit having a handle disposed on the handle a driven member, and a control member disposed on the handle, the driven member having two movable ends respectively movably received at the two open ends of the through hole and between a forced state and a tripped state Switching the ball, the control has a setting in this time An electromagnetic coil in the chamber, an inductive shaft movably extending in the guide and movable between a first state and a second state, and - abutting the sensing shaft along the axial direction a compression spring between the handles, wherein the induction shaft is in the first state, the induction shaft is along the axial direction - between the balls, forcing the balls to switch to the forced state, and Abutting the surrounding wall outwardly so that the handle cannot swing relative to the swing center, and when the sensing shaft moves to the second state, the sensing shaft Z extends into the chamber and disengages the balls Switching the balls to the tripping state, and releasing the surrounding wall, so that the shank can swing to and off from the axial direction with respect to the center of the light; and 15 1335857. Revision date: June 96, 918, 327. Application Replenishment & a central processing unit is disposed in the tube unit and electrically connected to the strain sensing unit and the electromagnetic coil. When the central processing unit determines that the torque sensing unit is not less than a pre-measured value When the reference value is set, the central processing unit can drive the electromagnetic coil to attract the sensing shaft; f dry, and move the sensing shaft from the first state to the second state. 2. Having a jump according to the i-th item of the patent application scope An electronic torque wrench for removing the hand, wherein the induction shaft has a guide segment movably disposed in the guide groove, and a rod segment connected to the guide segment, the guide segment having a section along the axis a connecting hole having a large aperture portion and a small aperture portion having a smaller aperture than the large aperture portion, the rod segment having a connecting portion received in the large aperture portion, and a connection from the connection a portion extending from the shaft portion of the small aperture portion, the outer diameter of the connecting portion being smaller than the aperture of the large aperture portion, the outer diameter of the shaft portion being smaller than the aperture of the small aperture portion, the rod segment being relative to the cold sliding portion The segment moves in the lateral direction, When the induction shaft is in the first state, the shaft portion of the rod segment is interposed between the balls along the axial direction, forcing the balls to switch to the pressing state, and when the induction shaft moves to the first In the second state, the guiding segment extends into the chamber, and the shaft portion of the rod segment is disengaged from the balls, so that the balls are switched to the jumping state. 具有 According to the second item of the patent application, there is a jump. The electronic torsion wrench of the hand-feeling is formed by a guide slider and a retaining ring screwed on the guide slider, and the large aperture portion is formed on the guide slider, the small The hole control portion is formed on the retaining ring. 16 1335857 帛96132718 application supplementary, revised no-line instructions to replace the stomach correction period: June 1999 γ 4 · according to the scope of the patent application of the first item of the electronic 杻 force pull hand, in which The sensing shaft has a month 'J end facing the head of the working unit, and the outer hollow of the front end is tapered toward the head along the axial direction. 5. The electronic force wrench having a tripping feel according to claim 1 of the patent application, wherein the work unit has a neck portion connected between the head and the handle along the axial direction, and a The 呤 呤 二 / σ σ 亥 亥 轴向 轴向 轴向 轴向 轴向 轴向 轴向 轴向 轴向 轴向 轴向 轴向 轴向 轴向 轴向 轴向 轴向 轴向 轴向 轴向 轴向 轴向 轴向 轴向 轴向 轴向 轴向 轴向 轴向 轴向 轴向 轴向 轴向 轴向 轴向 轴向 轴向 轴向The strain gauge on the strain body. 17