200936320 九、發明說明： 【發明所屬之技術領域】 本發__—種扭力扳手，特別是指—種具有電磁力跳 脫構件之數位式扭力扳手。 【先前技術】 佩之扭力板手魏含—鮮聊、—扳手套管、一跳脫 〇 機構及—調整機構。其中該調整機構包含-調整螺絲及一彈性 元件，該扳手套g呈中空長管狀；該跳脫機構及該彈性元件容 置於該扳手套管内，且該調整螺絲組設於該扳手套管一端相接 該彈性元件；該扳手套管一端與該扳手頭部相接。 使用者欲使賴扭力扳手時’可先顧轉該調整機構改變 該彈性元狀長度舰職機構具有預触力。#雜力板手 賴他力未達該親㈣時，該跳職構與該好頭不會產 ❹生跳脫動作’所以該扭力扳手可以正常操作；當該扭力板手的 操作扭力達該預設扭力時，該跳脫機構產生跳脫動作，使得該 扳手頭具有擺動的能力，所以該扭力扳手無法正常操作。 以上之先前技術雖然能夠使該扭力扳手具有扭力設定及 跳脫的功能，但該跳脫機構為連桿式機構，且調整方式為機械 式，所以容易產生以下缺點： 1.該扭力扳手使用一段時間後，該彈性元件會產生老化、 變形或彈性疲勞，所以扭力的設定會不準；使用中，會造成使 200936320 用者所作用的操作扭力與預設扭力不符合。 2.由於跳脫機構為連桿式且藉由機械方式進行扭力設 定，所以結構較為複雜且操作方式不方便。 【發明内容】 由於先前技術所揭露之扭力扳手會造成操作扭力與預設 扭力不符，以及跳脫機構複雜操作不方便等缺點，所以本發明 ❹ 提供-種麵的數位式扭力扳手，轉決先祕術的缺點。 本發明之一目的係在於提供一種數位式扭力扳手（三）， 其具有使預設扭力值與操作扭力更能相符，且當預設扭方值與 操作扭力更相符時能夠立即產生自動跳脫的功效。 本發明另一目的係在於提供一種數位式扭力扳手（三）， 其具有能夠提供更精簡的結構及更方便的操作方式。 根據本發明的目的，該數位式扭力扳手（三）係包含一本 〇 Ή 反手頭配設於該本體内；至少一應變感應器配設於該扳 手頭，-電磁力機構具-第—餘部及—第二餘部且配設於 該本體内，其中該第一齒狀部形成在該扳手頭，該第二齒狀部 可活動地接近或遠離該第一齒狀部。當該電磁力裝置之該第一 =狀部無第二錄部喷合’酿繼扳手麵動；當該電磁 _裴置之該第-齒狀部與該第二齒狀部分開，則無限制該扳手 頭擺動。 此外，數位式扭力扳手㈢，更包含一扭力設定裝置配設於 200936320 該本體’該扭力叙裝置肋提供扭力值設定且與該應變感應 器電連接。 根據本發明的實施，可以提供電磁式的跳脫機構’所以結 構精簡，又以數位方式設定預設扭力，所以設定方法簡便快速， 據此有效解決先前技術所揭示之扭力板手的缺點。 以下即再本發明之目的、功效及結構組態，舉一較佳實 施例並配合圖示詳細說明。 【實施方式】 请參閱第1圖，圖中揭露一數位式扭力扳手係包含一 本體20，一扳手頭30組設於該本體20 —端，—扭力設定裝 置40及一顯示裝置50組設於該本體2〇。其中該本體2〇為一 中空管狀，該扳手頭30具有一頭部32及一應變段34延伸自 該頭部32且容置於該本體20内。 5月參閱第2圖’係為本發明之第一實施例。該數位扭力板 手10又包含至少一應變感應器60配設於該扳手頭之應變 段34，以提供應變量的感測。而本實施例揭露二個應變感應 器60分別配設於該應變端34兩側。此外，應變感應器的 配置數量可以是一或四個。然而，上述應變感應器的配置數量 係為舉例說明，並非依此為限。此外，該扭力設定装置具 有一比較器66用以比較操作扭力與預設扭力是否相符。 一電磁力機構70係一電磁閥配設有一活動桿24。又該電 200936320 磁力機構70包含-第-齒狀部36及―第二齒_8且組設 於該本體2G内。其中該第-齒狀部％形成在該應變段抑叹 該第二齒狀部38係形成在該轉桿24端部。當該數位式扭力 扳手Η)通電後，該電磁力裝置7〇即產生電磁性，使得該活 桿24朝該應變段34伸出。當該第一齒狀部36與該第二餘 部38嚙合’則限制該扳手頭3〇擺動。 Ο 〇 請參閱第3圖，當該數位式扭力扳手10的操作扭力鱼預 設扭力經由-比較器66比較，且該操作扭力已翻預設扭力 值後，電力科人該電磁力機構7Q，鱗24會縮退並遠 離該應變段34，如此該_力機構7G之該第-餘部36與 該第二齒狀部38分開，則無限制該扳手頭洲擺動。 請參閱第4圖，係為本發明之第二實施例。該數位式扭力 扳手H)係包含本體20、扳手頭3〇、扭力設定裝置4〇、顯示 裝置50、比較器66及電磁力機構8〇，其中該本體2〇、該板 手頭30該扭力5又疋裝置4〇、該顯示裝置及該比較器邸 的構造及匈組態皆與第—實蘭相當。 本實施例與前實施例的不同在於··該電磁力機構8〇組設於 i本體2G内，其包含—座體22、__第—齒狀部36、一第二齒 狀^ 38及二電磁鐵26、28。其中該第一齒狀部36形成在該應 u第一齒狀部38係為桿狀且可活動地組設該座體μ 相對該第一齒狀部36。該電磁鐵26配設於該扳手頭30的應變 200936320 36的周邊位置，而另一該電磁 ^i_設在該扳手 段34，或配設在該第一齒狀部 鐵28配設於該第二齒狀部％ 頭30的電磁鐵26。 當該數位式扭力扳手1〇通 喝冤後’該電磁力機構8〇即產生 電磁性’二該電磁鐵26和28合l 8會互相吸引，使得該第二齒狀部 38朝向該應變段34伸出，且卷姑 田磙第一齒狀部36與該第二齒狀 Ο Ο 部38嚙合，則限制該扳手頭3〇擺動。 請參閱第5圖’當該數位式扭力板手1〇的操作扭力與預設 扭力經由該比㈣66啸，且_雜力已達_設扭力值 後電力不進入該電磁力機構8〇，使該電磁鐵％和28形成的 電磁力相斥的狀態，如此該第二齒狀部38會縮退且雜該應變 段34 ’該電磁力機構80之該第—齒狀部％與該第二齒狀部38 分開，則無限制該扳手頭3〇擺動。 請參閱第6圖，本發明又一實施例係適用於具有單一的且 固定扭力之扭力扳手90。該扭力扳手9G係包含—扳手頭犯組 設在一本體94 一端，且該扭力扳手90出廠時已被設定僅具有 提供單一預設扭力值的功能。至於該扳手9〇於操作使用過程中 所產生之操作扭力與預設扭力仍可藉由該比較器66進行比較。 此外本實施例所揭露的電磁力機構可以包含前述各實施例中的 電磁力機構’而圖中僅以前述之電磁力機構7〇為例說明。 該扭力扳手90的使用與前述各實施例相同，即電磁力機構 200936320 70產生磁力作用，則該扳手頭92的擺動受限制；當該扭力扳手 90的操作扭力與預設扭力經由該比較器66比較，且該操作扭力 已達到預設扭力值後，則電磁性消失使得該扳手頭92可擺動。 根據以上實施例的說明，本發明具有下述之優點： 第本發明是以利用電磁力機構作為自動跳脫機構，相 較於制以金屬元件加工製得連桿式跳脫機構，本發明的結構 〇 較為精簡。此外’電磁力機構可以免去元件的老化及變形問題， 所以跳脫的精準度更高。 第二、本發明設有扭力設定裝置以供使用者快速簡易地設 定預設扭力值，所以操作更加簡便。 以上乃本發明之較佳實施例以及設計圖式，惟較佳實施例 及設計圖式僅是舉例制，並非麟關本發職藝之權利範 圍’凡以均等之技藝手段、或為下述「申請專利範圍」内容所 ❹涵蓋之權利範圍而實施者，均不脫離本發明之_而為申請人 之權利範圍。 200936320 【圖式簡單說明】 第1圖係本發明之外觀圖。 第2圖係為本發明之第一實施例之示意圖之一。 ' 第3圖係為本發明之第一實施例之示意圖之二。 第4圖係為本發明之第二實施例之示意圖之一。 第5圖係為本發明之第二實施例之示意圖之二。 第6圖係為本發明之第三實施例之示意圖。 ❹ 【主要元件符號說明】 數位式扭力扳手10、90 座體22 扳手頭30、92 應變段34 第二齒狀部38 顯示裝置50 比較器66 電磁力機構70、80 本體20、94 活動桿24 頭部32 第一齒狀部36 扭力設定裝置40 應變感應器60 11200936320 IX. Description of the invention: [Technical field to which the invention pertains] The present invention relates to a torque wrench, in particular to a digital torque wrench having an electromagnetic force tripping member. [Prior Art] Peizhi's torsion wrench Wei Han - fresh chat, wrench sleeve, one trip 脱 mechanism and - adjustment mechanism. The adjusting mechanism comprises an adjusting screw and an elastic component, wherein the wrench sleeve g has a hollow long tubular shape; the jumping mechanism and the elastic component are received in the wrench sleeve, and the adjusting screw is disposed at one end of the wrench sleeve The elastic element is connected; the wrench sleeve is connected to the wrench head at one end. When the user wants to use the torque wrench, the steering mechanism can be changed first. The elastic element length has a pre-touch force. #杂力板手赖力力不达的亲(四), the jump structure and the good head will not produce a tripping action' so the torque wrench can operate normally; when the torsion wrench's operating torque reaches When the torque is preset, the tripping mechanism generates a tripping action, so that the wrench head has the ability to swing, so the torque wrench cannot operate normally. Although the above prior art can make the torque wrench have the functions of torque setting and tripping, the tripping mechanism is a link type mechanism, and the adjustment mode is mechanical, so the following disadvantages are easily generated: 1. The torque wrench uses a section After the time, the elastic component will be aging, deformed or elastic fatigue, so the setting of the torque will be inaccurate; in use, the operating torque of the 200936320 user will not match the preset torque. 2. Since the tripping mechanism is a link type and the torque is set by mechanical means, the structure is complicated and the operation mode is inconvenient. SUMMARY OF THE INVENTION The torque wrench disclosed in the prior art causes the operation torque to be inconsistent with the preset torque, and the complicated operation of the trip mechanism is inconvenient, so the present invention provides a face-to-face digital torque wrench. The shortcomings of mystery. An object of the present invention is to provide a digital torque wrench (3) which has a preset torque value which is more consistent with an operating torque, and which can automatically generate an automatic trip when the preset torque value is more consistent with the operating torque. The effect. Another object of the present invention is to provide a digital torque wrench (3) which is capable of providing a more compact structure and a more convenient operation. According to the object of the present invention, the digital torque wrench (3) includes a 〇Ή reverse hand is disposed in the body; at least one strain sensor is disposed on the wrench head, and the electromagnetic force mechanism has the first part And a second portion disposed in the body, wherein the first tooth portion is formed on the wrench head, and the second tooth portion is movable to approach or away from the first tooth portion. When the first portion of the electromagnetic force device is not sprayed by the second recording portion, the first step of the electromagnetic force device is opened; when the first tooth portion and the second tooth portion of the electromagnetic device are opened, Limit the swing of the wrench head. In addition, the digital torque wrench (3) further includes a torque setting device disposed at 200936320. The body θ provides a torque value setting and is electrically connected to the strain sensor. According to the implementation of the present invention, the electromagnetic tripping mechanism can be provided. Therefore, the structure is simplified, and the preset torque is set in a digital manner. Therefore, the setting method is simple and rapid, thereby effectively solving the disadvantages of the torsion wrench disclosed in the prior art. The purpose, function, and configuration of the present invention will now be described in detail with reference to the preferred embodiments. [Embodiment] Please refer to FIG. 1 , which illustrates a digital torque wrench including a body 20 , a wrench head 30 is disposed at the end of the body 20 , and the torque setting device 40 and a display device 50 are assembled. The body is 2〇. The body 2 is a hollow tubular body. The wrench head 30 has a head 32 and a strain section 34 extending from the head 32 and received in the body 20. Referring to Figure 2 in May is a first embodiment of the present invention. The digital torsion wrench 10 further includes at least one strain sensor 60 disposed on the strain section 34 of the wrench head to provide sensing of the strain amount. The two strain sensors 60 are respectively disposed on both sides of the strain end 34. In addition, the number of strain sensors can be one or four. However, the number of configurations of the strain sensors described above is for illustrative purposes and is not limited thereto. Further, the torque setting device has a comparator 66 for comparing whether the operating torque matches the preset torque. An electromagnetic force mechanism 70 is a solenoid valve equipped with a movable rod 24. Further, the electric power mechanism 200936320 includes a - tooth-tooth portion 36 and a second tooth portion 8 and is disposed in the body 2G. Wherein the first tooth portion % is formed in the strain portion to suppress the second tooth portion 38 formed at the end of the rotating rod 24. When the digital torque wrench is energized, the electromagnetic force device 7 generates electromagnetic force so that the live rod 24 projects toward the strain portion 34. When the first tooth portion 36 is engaged with the second remaining portion 38, the wrench head 3 is restricted from swinging. Ο 〇Please refer to FIG. 3, when the torque of the digital torque wrench 10 is compared with the preset torque of the fish, and the torque has been turned over by the preset torque value, the electric power mechanism 7Q, The scale 24 will retract and move away from the strain section 34. Thus, the first remaining portion 36 of the force mechanism 7G is separated from the second tooth portion 38, and the wrench head is not limited to swing. Please refer to Fig. 4, which is a second embodiment of the present invention. The digital torque wrench H) comprises a body 20, a wrench head 3〇, a torque setting device 4〇, a display device 50, a comparator 66 and an electromagnetic force mechanism 8〇, wherein the body 2〇, the plate hand 30 has the torque 5 The structure of the display device, the display device, and the structure of the comparator 及 and the Hungarian configuration are all equivalent to the first real. The difference between the present embodiment and the previous embodiment is that the electromagnetic force mechanism 8 is disposed in the i body 2G, and includes a body 22, a __ tooth-shaped portion 36, a second tooth shape 38, and Two electromagnets 26, 28. The first tooth portion 36 is formed in the rod shape of the first tooth portion 38, and the seat body μ is movably assembled with respect to the first tooth portion 36. The electromagnet 26 is disposed at a peripheral position of the strainer 200936320 36 of the wrench head 30, and the other electromagnetic component is disposed on the wrench segment 34 or disposed on the first toothed portion iron 28 Second tooth portion % Electromagnet 26 of head 30. When the digital torque wrench is turned on, the electromagnetic force mechanism 8 is electromagnetically generated. The electromagnets 26 and 28 are attracted to each other, so that the second tooth portion 38 faces the strain portion. 34 is extended, and the first tooth portion 36 of the roll is engaged with the second toothed portion 38, thereby restricting the swing of the wrench head 3〇. Please refer to Fig. 5 'When the digital torsion wrench 1 〇's operating torque and the preset torque pass the ratio (four) 66 screams, and _ the power has reached _ set the torque value, the power does not enter the electromagnetic force mechanism 8 〇, so that The electromagnetic force formed by the electromagnets % and 28 is repelled, such that the second tooth portion 38 is retracted and mismatched by the strain portion 34'. the first tooth portion of the electromagnetic force mechanism 80 and the second tooth When the portions 38 are separated, the wrench head 3 swings without restriction. Referring to Figure 6, yet another embodiment of the present invention is applicable to a torque wrench 90 having a single and fixed torque. The torque wrench 9G includes a wrench head set at one end of the body 94, and the torque wrench 90 has been set to have a function of providing a single preset torque value. The operating torque generated by the wrench 9 during operation and the preset torque can still be compared by the comparator 66. Further, the electromagnetic force mechanism disclosed in the present embodiment may include the electromagnetic force mechanism ' in the foregoing embodiments, and only the electromagnetic force mechanism 7' described above is taken as an example. The use of the torque wrench 90 is the same as the foregoing embodiments, that is, the electromagnetic force mechanism 200936320 70 generates a magnetic force, and the swing of the wrench head 92 is restricted; when the operating torque of the torque wrench 90 and the preset torque are via the comparator 66 After comparison, and the operating torque has reached the preset torque value, the electromagnetic force disappears so that the wrench head 92 can swing. According to the description of the above embodiments, the present invention has the following advantages: The first invention is an automatic tripping mechanism using an electromagnetic force mechanism, and the link type tripping mechanism is manufactured by processing a metal component, and the present invention The structure is more streamlined. In addition, the electromagnetic force mechanism can eliminate the aging and deformation of the components, so the accuracy of the jump is higher. Second, the present invention is provided with a torque setting device for the user to quickly and easily set the preset torque value, so that the operation is simpler. The above is a preferred embodiment and a design of the present invention, but the preferred embodiment and the design drawings are merely exemplary, and are not the scope of the rights of the company. The scope of the rights covered by the scope of the patent is not limited to the scope of the applicant's rights. 200936320 [Simplified description of the drawings] Fig. 1 is an external view of the present invention. Figure 2 is one of the schematic views of the first embodiment of the present invention. Fig. 3 is a second schematic view of the first embodiment of the present invention. Figure 4 is a schematic view of a second embodiment of the present invention. Figure 5 is a second schematic view of a second embodiment of the present invention. Figure 6 is a schematic view of a third embodiment of the present invention. ❹ [Main component symbol description] Digital torque wrench 10, 90 Seat 22 Wrench head 30, 92 Strain section 34 Second tooth 38 Display device 50 Comparator 66 Electromagnetic force mechanism 70, 80 Body 20, 94 Moving rod 24 Head 32 first tooth 36 torque setting device 40 strain sensor 60 11