TW200520906A - Torque measurement structure of bendable wrench - Google Patents

Abstract

A torque measurement structure of a bendable wrench mainly includes an integrally forging formed wrench body, which includes a handle. The two ends of the handle are formed with a fitting member for housing a to-be-tightened member. The intermediate portion of the handle is formed with a bendable part, which is formed by bending into a perpendicular shape after forming of the wrench body, so that the structural strength on the joint portion between the bendable part and the surrounding area thereof with the handle is weaker. Subsequently, a strain gauge is attached to a pre-determined portion where the structural strength is weakest on the joint portion between the bendable part and the handle. When wrenching the wrench body, the surrounding area of the joint portion, where the structural strength is weakest between the handle and the bendable part, is liable to generate a bent deformation. As a result, the resistance variation formed by a strain gauge becomes more sensitive. Finally, a display device installed on the two ends of the strain gauge digitally displays a torque value by using the measured resistance value. The invented torque measurement structure has a high industrial application.

Description

200520906 V. Description of the invention (1) [Technical Field] 乂 The present invention relates to a torque wrench of a bending wrench, which is directly to make the torque wrench more practical and convenient. The effect of measuring the torque value at the junction is more sharp. [Previous technology] According to the current development of domestic hand tools, whether it is product type or structural quality, = heart pays two things: :: 12 In the past few years, the hand tool industry has In this direction, adding ^ θ to greatly increase the structural strength of the hand tool is the primary goal. T,:; t Tool: has been converted from pounds and pounds ... 'into a sheet metal structure with better structural strength and integrated forging, so that the structural strength of the wrench reaches Optimization 2: No matter whether it is the normal-spinning screw solid #, or the rusted screw fastener that requires more force, it can easily achieve the screwing or loosening effect. Although the structural strength of the wrench tool increases, It can achieve the effect of easily screwing the screw fastener, but the torque wrench that measures the torque value of the wrench is ancient. According to Annex 1, Annex 1 is Taiwan Patent Bulletin No. 4 8 5 8 7 $ No. "^ Good Torque Tool") Structural Strength It strengthens, but makes the strain gauges accommodated in the plate space less torque sensing, and thus the disadvantage of the torque wrench is that it loses the measurement function of the torque value; furthermore, this type of conventional torque wrench The structure, ## strain gauge and display device, is fixed in the receiving space of the wrench by the embedded method. In this way, when each strain gauge or display device is damaged, it will be difficult to replace it. ^ 200520906 V. Description of the invention (2) [Content] The present invention relates to a torque measuring structure of a bending wrench, which mainly includes a wrench body integrally forged. The wrench body includes a grip 'a' and two ends of the grip and a sleeve is formed. The turning part of the screw fastener is formed with a bent part in the middle of the handle. The bent part is formed after the wrench body is formed, and then it is bent into a vertical shape, so that the bent part and the part around the handle are connected. The structural strength is relatively fragile. Continue to attach a strain gauge to the preset position where the bending part with the most fragile structural strength is connected to the handle, so that when the wrench body is pulled, the handle body with the weakest structural strength of the wrench body and the bending Around the junction of the two parts, it produces: Xu, bending change ', which makes the resistance change of the strain gauge more sensitive. Finally, the display device extended at both ends of the strain gauge is used to change the measured resistance to a numerical value. The mode will display the torque value. ^ The strain gauge of the invention fits around the joint where the weakest part of the wrench ’s overall structural strength is connected with the handle, so it can achieve the effect of the strain gauge; furthermore, the strain gauge and display device of the invention are The fitting method, such as accidentally dropping the W ^ hand and causing damage to the strain gauge or the display device, quickly replace the effect, while the conventional torque wrench structure is not used, and the insertion method is used, which makes the replacement of the strain gauge and the display device difficult. Disadvantages. [Embodiment] The Zhao Shi invention relates to a torque measurement structure of a bending wrench. Please refer to Figure 2f. The torque measurement structure of this bending wrench has a main body and a wrench body ( 10), the wrench body (10) package

200520906 V. Description of the invention (3) ----- Includes a grip (11) that can be held by the hand. The grip (η) is provided with a sleeve turning part (i) that can be screwed on each end (i) 2) (The present invention uses a spanner as an example to describe the structure, and is not intended to limit the appearance of the present invention in any way.) Another grip (ii) is formed with a bent portion (Work 3) in the middle of the bent portion (i 3) The strain gauge (14) is attached to the handle (χ " and the preset position is attached to the strain gauge (14). The strain gauge (14) is provided at both ends with a-display device S (1 5), the display device ( i 5) can display the torque value measured in the strain gauge (1 4) digitally (where the resistance measured by the strain gauge is converted into a digital signal is a well-known technology ♦ Beijing ^ will not repeat); However, the most significant feature of the present invention is that the bending part (1 3) is integrally forged with the wrench body (1 0), and then the handle (1 1) of the wrench body (1 0) is bent into a vertical shape. For the thumb of the hand to hold against, and after the vertical bending process, the area around the joint between the bending portion (i 3) and the grip (1 1) is a wrench body (1 〇 ) The strength of the overall structure dares to be fragile. Therefore, when the user pulls the wrench body (1 Q) (shown in the fourth figure), the fitting grip (1 1) is in phase with the bent portion (1 3). The strain gauge (1 4) at the junction will cause the sensitivity of the strain gauge (1 4) to be more sensitive due to the poor structural strength of the bent portion (1 3). Finally, the display device (1 5) will be used to measure The measured torque value is displayed; Moreover, the general wrench is mostly used in the machinery industry or the automobile industry, so the wrench is very easy to be full of oil when it is used, so a little careless handling will cause the wrench body (1 〇) The electronic device loses its effectiveness due to slipping and dropping. The original reason is that the strain gauge (1 4) and the display device (1 5) of the present invention use a sticker.

200520906 V. Explanation of the invention (4) Combination method, and (1 0) Careless 15 (5) Strain gauge and obvious invention when damaged. Another aspect of the grip (1 1 effect. The above-mentioned attempts to the spirit of the same invention should be included in the comprehensive development of the above-mentioned design, use and practical needs, and it is made, so it has a known structure More in line with China ’s patent filing, patent applicants are only used to invent inventions for any purpose of protection. The bendable and cost-effective structure of the present invention has "increase of novelty effect, law-related inventions, and please explain. The form of the present invention is limited to the scope of the present invention. In terms of the twist of the folding wrench, the invention is indeed a "required" application that should be considered and therefore also has a patent. Relationship, so when the wrench body is dropped ', the strain gauge (: L 4) or the display device (2, can be easily replaced, and the use of the embedded display device's shortcomings, which is not easy to replace without custom, is really a progressive As shown in the five figures, the strain gauge (1 4) can be fitted at the beginning of the car. In this way, the same preferred embodiment as the above embodiment can be achieved. It is not a system, but any modification is possible. Or change Are still in force measurement structure is entirely consistent with the structure set up have made unprecedented innovation on industry structure 'and the invention can be compared to learning "progressive" elements of its full provisions, is the investigation according to law, and affirmed.

200520906 Brief description of the drawings The preferred embodiment of the present invention can be described in more detail in conjunction with the attached drawings, so that the reviewers can gain a better understanding of the present invention, in which: A · Description of main component symbols: 10—one wrench body 11—one grip 12 —-- slewing part 13——bending part 14__ —strain gauge 15 — —a display device B · Illustration of drawing number ·

The first figure is an exploded view of the torque measuring structure of the bending wrench of the present invention; the second and third figures are the external appearance schematic diagrams of the torque measuring structure of the bending wrench of the present invention; the fourth picture is the torque measuring structure of the bending wrench of the present invention The schematic diagram of the operation; and the fifth diagram are the external appearance diagrams of the second embodiment of the torque measuring structure of the bending wrench of the present invention.

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Claims (1)

200520906 VI. Patent application scope 1 Torque measurement of a foldable spanner wrench body, the wrench A f # A t two, mainly includes: The handle is formed in a suitable place with a bend and fold, the f temple handle, W 1 can measure the strain I of the torsion torque. The strain gauge is the display of the measured torque value through the display device at the appropriate place of the grip; through bending processing, the bending part and the bending part and the grip The strength of the structure around the joint of the handle is weakened, so that the strain gauge attached to the joint of the bend and the handle can achieve a more sensitive sensing effect. 2. The torque measurement structure of the bending wrench according to item 1 of the scope of the patent application, wherein the strain gauge and display device are in a close relationship with the grip. Page ίο