TW200539992A - Electric wrench structure - Google Patents

Abstract

This invention aims to disclose an electric wrench structure, including: a wrench body, the wrench body having a grip portion and at least one wrench portion. In this invention, a strain gauge is embedded in the grip portion and distant from a wrenching center of the wrench portion by a distance X. The distance X is the length extending from an end of the grip portion to a wrenching center of the wrench portion at another end. The strain gauge is provided at the location between 1/8 to 3/16 X, that does not affect the wrench portion, and is closer to the grip portion. While applying a force to the wrench to rotate a fastener, an electronic device connected to the strain gauge detects the precise torque value, to provide the user with useable data.

Description

200539992 V. Description of the invention (1) [Technical field to which the invention belongs] θ The present invention relates to an "structure of an electronic wrench", and in particular, to a method that can make the torsional force measurement induction more sensitive and does not damage the vibrator Improperly buried position of the structural strength of the abutment portion. [Previous technology] According to the current, the DIY atmosphere of the people who arrange the home by themselves, coupled with the development of domestic hand tools has been quite mature and stable. Among them, regardless of the variety or structural quality, they have won unanimous recognition at home and abroad. The hand tool industry In recent years, in order to make the general consumer more prone to death when in use, a variety of hand tools that are easy to operate or with humanized functions have also been introduced. Attachment to the concept (Annex No. 3, 9 70, 1 5 5), which is mainly used to embed a strain gauge between the wrench holding part and the trigger part. When the user pulls the screw-fixed workpiece, the wrench as a whole will deform slightly, and the strain gauge embedded in the wrench will also deform accordingly. After the strain gauge is deformed, the resistance value will change. The electronic device on the strain gauge can only calculate the torque value based on this resistance value and display it for user's reference. Of course, although this type of electronic wrench with torque measurement function has the effect of torque measurement, the buried position of the conventional electronic wrench strain gauge is not ideal. If it is buried too close to the grip, then The deformation of the strain gauge is small, so the resistance value change of the strain gauge is also small. This is not conducive to the detection and calculation of the correct torque value by the electronic device. If the strain gauge is set on the trigger part, it is easy to damage the trigger part. Structure, reduce the strength of the wrench, and move

200539992 V. Description of the invention (2) The direction of the part will be different. The correct calculation method is quite inadequate [the invention is sensitive enough to improve the practice of the invention, or the aforementioned system has strain gauges, the X The center point is closer to the electric user here [this to the third body (1 grip part to pull the solid workpiece invented purpose has a grip buried in the length system 'for L will not be right' reference implementation in the wrench device The original creation is shown in the diagram), (1 0 parts (1 'and at different times, the torque value should be practical)] The main purpose of the electronic wrench is easy to damage the' the hair holding part, The calculated data is detected by applying force to the hand of the 1 part of the holding part which is the length of the holding part. Formula] Regarding an electric wrench body of this kind), and 1), the two fixed jaws of the wrench part of the wrench body The force to which it is subjected has not been adjusted to the electronic wrench on the jaw. This will cause inconvenience in use, and its feasibility really needs to be improved. The purpose is to provide an electronic wrench with a poorly buried strain gauge, and the lack of structural strength of the entire hand includes a wrench body and at least one trigger portion, and the distance from one end of the trigger portion to the holding portion / 8 to 3/1 The structure causes the exact torque to turn the other 6 of the center when turning the screw to fix the workpiece, and here, it can be compared with the value. With the structure, the induction is not lost. In order to achieve this, the wrench of the present invention is to move the trigger portion at the point X length to set the strain gauge to the distance from the trigger strain gauge connection period to provide the structure of the ::: wrench, please refer to the structure of Figure-. It mainly includes a The wrench 4) is formed on the upper part. At least one end of the holding part (= 1, the user holding $ the pulling part (i) υ) is provided with 3 (IX 丄), which is a set of housing parts that can be combined with the pulling test ( 1 〇) appropriate order

200539992 V. Description of the invention (3) An electronic device (12) is provided. The electronic device (12) is provided with a display (1 3), and the holding portion (1 0) is separated from the trigger portion (1 1). A strain gauge (1 4) is embedded at the length X of the moving center point, and the X length is the pulling part (1 1) from the holding part (1 0) to the other end of the holding part (1 0). The center point, which is 1/8 to 3/16 of the L length, and the strain gauge (1 4) is connected to the electronic device (1 2). When the strain gauge (1 4) is deformed by force, the electronic device (1 2) The resistance value change of the strain gauge (1 4) can be detected, and the torque value is calculated, and the torque value is displayed on the display (1 3) for the user's reference. (1 4) It is arranged on the holding part (1 0) at a length X from the triggering part (1 1). It is not on the triggering part (1 1) here, so it is not necessary as the triggering part (1 1). It bears large stress, so there is no fear of fracture and damage; but here it is close to the intersection of the trigger portion (1 1) and the grip portion (1 0), and the cross-sectional area is small and the deformation is large, so Electronic equipment (12) may be provided by a strain gauge (14) where the measured torque value of the quasi-disc. Continuing to refer to the fourth figure, when the present invention is in use, the screwed workpiece to be turned is first sleeved in the trigger portion (1 1), and then the force is applied to the holding portion (1 0). Use the lever principle to screw the screwed workpiece, and when the screwed workpiece is gradually tightened, the user needs to apply more force to turn the screwed workpiece, and the greater the force applied, the larger the wrench body. (1) The larger the deformation, the electronic device (1 2) can calculate the torque value according to the resistance value change caused by the deformation of the strain gauge (1 4), and the user can read it on the display (1 3) This value is used as a parameter to determine whether the screwed workpiece is fastened.

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200539992 V. Description of the invention (4) ★ The most sensitive test basis for A motorcycle; and the strain gauge 4) of the present invention is set at $ ~ more, so the electronic device (12) can be changed by the strain gauge (I4), The most accurate data provides users with the correct torque value. Mo Shi split back mouth j The present invention must pay special attention to the point that the electronic wrench of the present invention makes the overall structure more perfect, especially in the case of the wrench tool body ^ 1- inflammation, because the development space is quite limited In the field, it is quite difficult to make this invention absolutely consistent with the principle of progressiveness, and this is as described in the "Patent Examination Standards" on pages 1-2 of 21: In areas where development space is limited, minor improvements in technology can be regarded as "obvious progress." f From the above, it is only used to explain the preferred embodiment of the present invention. Jie # attempts to restrict the present invention in any form, so that any person who makes the invention in the same spirit Modifications or changes should still be included in the scope of the present invention. As stated on the wire, the structure of the electronic wrench according to the present invention in terms of structural design, practicality and cost-effectiveness is indeed in full compliance with the disclosed structural invention. It also has a new structure. "Sex" should be undoubtedly considered, and because of the effectiveness of this invention, it is also "progressive". The above-mentioned requirements of the two requirements of the Patent Law concerning the application of invention patents by the Koji Reform Patent Law are in line with our application. And I would like to ask Jun Bureau to review it early and give her affirmation. / Puppet patent

200539992 Brief description of the diagram The first diagram is a perspective view of the appearance of the structure of the electronic wrench. The second figure is a top view of the structure of the electronic wrench of this creation. The third figure is a partial cross-sectional view of the structure of the original electronic wrench. The fourth picture is a schematic reference diagram of the structure of the electronic wrench used in this creation. [Illustration of Symbols] 1 --- a wrench body 10-a holding part 11-a pulling part 1 2--an electronic device 1 3-a display 1 4-a strain gauge < 1

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Claims (1)

200539992 6. Scope of patent application 1. The structure of an electronic wrench is mainly a wrench body. The wrench system includes a holding part and at least one triggering part, and an electronic device is arranged on the holding part. A strain gauge is provided at the X length from the triggering center of the triggering part, and the strain gauge is connected to the electronic device, so that the electronic device can detect and calculate the torque value of the wrench body by the strain gauge; wherein the X length is determined by the grip The pulling point from the one end of the holding part to the other end of the holding part is the center point, which is 1/8 to 3/16 of the L length. 2. The structure of the electronic wrench according to item 1 of the scope of the patent application, wherein the electronic device is provided with a display, and the display is used to display the torque value measured by the electronic device. Page 10