1330575 九、發明說明： 【發明所屬之技術領域】 本發明係種扭力扳手，制是指—種具有電磁力 構件之數位式扭力扳手。 【先前技術】 傳統之扭力扳手係包含—扳手頭部、—扳手套管、—跳脫機 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；該扳手套管呈巾^長管狀；該賊機構及娜性元件容置於 該扳手套管内，且該調整螺馳設於該扳手套接該彈性 元件；該扳手套管一端與該扳手頭部相接。 使用者欲使用該扭力扳手時’可先藉旋轉該調整機構改變該 彈性元件之長度使該跳脫機構具有預設扭力。當該扭力扳手的操 作扭力未達該預設扭力時，該跳脫機構與該扳手頭不會產生跳脫 動作，所以該扭力扳手可以正常操作；當該扭力扳手的操作扭力 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’所以該扭力板手無法正常操作。 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，會造成使用者 所作用的操作扭力與預設扭力不符合。 2·由於跳賴構艇財域域械対進雜力設定所以 結構較為複雜且操作方式不方便。 【發明内容】 ,由於先祕崎賊之扭力扳手會造錢雜力與預設扭力 不符，以及職機顧賴作不讀等缺點 種創新的触紐力好，《職先紐躺触# &供- 本發明之-目_在於提供-種數位式扭力扳手（四），其县 有使預設扭力值絲作扭力更能補’且當預設扭力值與操作扭 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（四），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（四）係包含一本體； -扳手頭配設於該本至少-應賊絲配設於該扳手頭； 一電磁力機構具有一控制裝置連接該扳手頭端部，以及一電磁鐵 組设於該本體内且相對該控制裝置；當該電磁力機構之該控制裝 置與該電磁鐵相吸著，則限制該扳手頭擺動；當該電磁力裝置之 該控制裝置與該電磁鐵未吸著，則無限制該扳手頭擺動。 此外’數位式扭力扳手(四），更包含一杻力設定裝置配設於該 本體’該扭力設定裝置用以提供扭力值設定且與該應變感應器電 連接。 6 1330575 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扳手的缺點。 以下即再依本發明之目的、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】 請參閱第1圖，圖中揭露一數位式扭力扳手10係包含一本體 * 20，一扳手頭30組設於該本體20 —端，一扭力設定裝置4〇及一 顯示裝置50組設於該本體20。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。 請參閱第2圖，係為本發明之第一實施例。該數位扭力扳手 10又包含至少一應變感應器60配設於該扳手頭3〇之應變段34， 以提供應變量的感測。而本實施例揭霧二個應變感應器6〇分別配 • 設於該應變段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。 一電磁力機構70包含一控制裝置72及一電磁鐵74且組設在 該本體20内。該控制裝置72連接該應變段34端部，該電磁鐵 74相對該控制裝置72 ^又該控制裝置72包含一第一控制元件 721及一第二控制元件722’其中該第一控制元件721為錐形塊 7 1330575 且延伸自該應變段34端部，該第二控制元件您可活動地配設 於該第-控制元件721周圍且相對該電磁鐵74。 . 倾紐版力板手Μ通錢，魏動觸7()即產生電 磁性，該電磁鐵74會吸引該控制裝置72之該第二控制元件肥， 使得該第二控制元件722朝向該電磁鐵74活動，且該第二控制元 件722位移而壓靠著該第一控制元件721。如此，因為該第:控制 元件722與該電磁鐵74吸著，且該第一控制元件721被該第二控 參制元件722麗制著，所以該控制裝置72可以限制該板手頭3〇擺 動。 請參閱第3圖，當該數位式扭力扳手1〇的操作扭力與預設扭 :歷經由-比較器66比較，且該操作扭力已達到預設扭力值後電 力不進入該電磁力機構70，該控概置72之該第二控制元件恐 與該電磁鐵74不吸著，則無限制該扳手頭3〇擺動。 請參閱第4圖所示，係為本發明之第二實施例。該數位式扭 鲁力扳手10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及電磁機構8〇，其中該本體2〇、該板手頭3〇、 該扭力設定裝置40、該顯示裝置50及該比較器66的構造及空間 組態皆與第一實施例相當。 本實施例與前實施例的不同在於：該電磁力機構8〇包含一控 制裝置82及-電磁鐵74且組設在該本體2〇内其中該控制裝置 82連接該應變段34端部，該電磁鐵74相對該控制裝置犯。該控 8 1330575 制裝置82具有-桿體821及一塊體微，其中該桿趙82i與該塊 體822結合’且該桿體821組設於該應變段34端部，該塊體微 相對該電磁鐵74。 當該數位式扭力扳手1Q通電後，該電磁力機構8q即產生電 磁性’使該電磁鐵74吸住該控制褒置82之塊體呦，如此一來， 該桿體821便不能擺動，且該扳手頭3〇與該桿體821结合，所以 該扳手頭30受限制而無法相對該本體2〇產生擺動。 請參閲第5圖，當該數位式扭力扳手1〇的操作扭力與預設扭 力經由該比較H 66比較’且該操雜力已達到職扭力值後電 力不進入該電磁力機構80，使其形力電磁性消失的狀態，該控制 裝置82之塊體822與該電磁鐵74未吸著，如此則無限制該板手 頭30擺動。 請參閱第6圖，本發明又一實施例係適用於具有單一定扭力 功能的扭力扳手90。該扭力扳手90係包含一扳手頭92組設在一 本體94 一端，且該扭力扳手9〇出薇時已被設定僅具有提供單— 預設扭力值的功能。又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，即電磁力機構卯 產生磁力作用，則該扳手頭92的擺動受限制；當該扭力扳手9〇 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。 9 1330575 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裝置作為自動跳脫機構，相較 於習用以金屬元件加工製得連桿式跳脫機構，本發_結構較為 精簡。此外’電磁力裝置可以免去元件的老化及變形問題，所以 跳脱的精準度更高。 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_以及設制式，惟触實施例以 及設計圖式僅是舉例說明，並_於限制本發明技藝之權利範 圍’凡以均等之技藝手段、或為下述「申請專利範圍」内容所涵 蓋之權利範_實施者’均桃離本發明之範如為巾請人之權 利範圍。 【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―實_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〜 第5圖係為本發明之第二實酬之示意圖之二。 第6圖係為本發明之第三實施例之示意圖。 1330575 【主要元件符號說明】 、 數位式扭力扳手10、90 本體20、94 扳手頭30、92 頭部32 應變段34 扭力設定裝置40 ® 顯示裝置50 應變感應器60 比較器66 電磁力機構70、80 控制裝置72、82 電磁鐵74 第一控制元件721 • 第二控制元件722 桿體821 塊體8221330575 IX. Description of the Invention: [Technical Field] The present invention relates to a torque wrench, which is a digital torque wrench having an electromagnetic force member. [Prior Art] A conventional torque wrench includes a wrench head, a wrench sleeve, a jump offline mechanism, and an adjustment mechanism. Wherein the adjusting mechanism comprises an adjusting screw and an elastic component; the wrench sleeve is a long tubular shape; the thief mechanism and the nano component are received in the wrench sleeve, and the adjusting screw is disposed on the wrench sleeve An elastic member; one end of the wrench sleeve is in contact with the wrench head. When the user wants to use the torque wrench, the length of the elastic member can be changed by rotating the adjustment mechanism to make the trip mechanism have a predetermined torque. When the operating torque of the torque wrench does not reach the preset torque, the tripping mechanism and the wrench head do not cause a tripping action, so the torque wrench can operate normally; when the operating torque of the torque wrench reaches the preset torque At this time, the tripping mechanism generates a tripping action, so that the wrench head has the ability to swing 'so the torsion wrench cannot operate normally. Although the above prior art can make the torque wrench have the function of torque setting and tripping, but the tripping mechanism is a link type mechanism and the adjustment mode is mechanical, 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 caused by the user will not match the preset torque. 2. The structure is complicated and the operation mode is inconvenient because of the setting of the hybrid power of the squadron. [Summary of the Invention], because the first secret thief's torque wrench will make the money miscellaneous and the preset torque does not match, and the job machine depends on the unfamiliar and other shortcomings, such as the innovation of the touch force, "the first position of the new touch # & For the purpose of the present invention - the provision of a digital torque wrench (four), the county has the ability to make the preset torque value of the torque more able to make up and when the preset torque value is more consistent with the operating torque Produces automatic tripping. Another object of the present invention is to provide a digital torque wrench (4) which is capable of providing a more compact structure and a more convenient operation. According to the purpose of the present invention, the digital torque wrench (4) includes a body; the wrench head is disposed on the at least the thief wire disposed on the wrench head; and the electromagnetic force mechanism has a control device connected to the wrench a head end portion, and an electromagnet group disposed in the body and opposite to the control device; when the control device of the electromagnetic force mechanism is attracted to the electromagnet, limiting the swing of the wrench head; when the electromagnetic force device is If the control device and the electromagnet are not sucked, the wrench head is not restricted from swinging. Further, the 'digital torque wrench (4) further includes a force setting device disposed on the body'. The torque setting device is configured to provide a torque value setting and is electrically connected to the strain sensor. 6 1330575 According to the implementation of the present invention, an electromagnetic jumping mechanism can be provided, so that the structure is simplified, and the preset torque is set in a digital manner, so the setting method is simple and rapid, and the utility model can effectively solve the torque wrench disclosed in the prior art. Disadvantages. In the following, the preferred embodiment of the invention will be described in detail with reference to the accompanying drawings. [Embodiment] Please refer to FIG. 1 , which discloses a digital torque wrench 10 comprising a body * 20 , a wrench head 30 is disposed at the end of the body 20 , a torque setting device 4 , and a display device 50 . The group is disposed on the body 20. The body 2 is a hollow tubular body, and the wrench head 30 has a head 32 and a strain section 34 extending from the head 32 and housed in the body 20. Please refer to Fig. 2, which is a first embodiment of the present invention. The digital torque wrench 10 further includes at least one strain sensor 60 disposed on the strain section 34 of the wrench head 3 to provide sensing of the strain amount. In this embodiment, the two strain sensors 6 揭 are respectively disposed on both sides of the strain section 34. In addition, the number of strain sensors can be one or four. However, the number of configurations of the above strain sensors is exemplified and is not limited thereto. An electromagnetic force mechanism 70 includes a control device 72 and an electromagnet 74 and is disposed within the body 20. The control device 72 is connected to the end of the strain section 34. The electromagnet 74 is opposite to the control device 72. The control device 72 further includes a first control element 721 and a second control element 722'. The first control element 721 is The tapered block 7 1330575 extends from the end of the strain section 34, and the second control element is movably disposed around the first control element 721 and opposite to the electromagnet 74. The plucking plate is hand-cranked, and the electromagnetic contact 74 () generates electromagnetic force, and the electromagnet 74 attracts the second control element of the control device 72 such that the second control element 722 faces the electromagnetic The iron 74 is active and the second control element 722 is displaced against the first control element 721. In this way, because the first control element 722 and the electromagnet 74 are attracted, and the first control element 721 is made by the second control unit 722, the control device 72 can limit the swing of the board. . Referring to FIG. 3, when the operating torque of the digital torque wrench 1〇 is compared with the preset torque: the comparison is performed via the comparator 66, and the electric power does not enter the electromagnetic force mechanism 70 after the operating torque has reached the preset torque value, If the second control element of the control unit 72 is not attracted to the electromagnet 74, the wrench head 3 is not restricted from swinging. Please refer to FIG. 4, which is a second embodiment of the present invention. The digital torque wrench 10 includes a body 20, a wrench head 3〇, a torque setting device 4〇, a display device 50, a comparator 66, and an electromagnetic mechanism 8〇, wherein the body 2〇, the plate is 3手, The configuration and spatial configuration of the torque setting device 40, the display device 50, and the comparator 66 are all comparable to those of the first embodiment. The difference between the present embodiment and the previous embodiment is that the electromagnetic force mechanism 8 includes a control device 82 and an electromagnet 74 and is disposed in the body 2 , wherein the control device 82 is connected to the end of the strain segment 34 . The electromagnet 74 is committed against the control device. The control 8 1330575 device 82 has a rod body 821 and a body micro, wherein the rod 82i is combined with the block 822' and the rod body 821 is assembled at the end of the strain section 34, the block body is opposite to the Electromagnet 74. When the digital torque wrench 1Q is energized, the electromagnetic force mechanism 8q generates electromagnetic force so that the electromagnet 74 sucks the block 呦 of the control device 82, so that the rod body 821 cannot swing, and The wrench head 3〇 is coupled to the rod body 821, so the wrench head 30 is restricted from swinging relative to the body 2〇. Referring to FIG. 5, when the operating torque of the digital torque wrench 1〇 is compared with the preset torque through the comparison H 66 and the electric power has reached the value of the working torque, the electric power does not enter the electromagnetic force mechanism 80, so that the electric power does not enter the electromagnetic force mechanism 80. In a state where the electromagnetic force disappears, the block 822 of the control device 82 and the electromagnet 74 are not sucked, so that the plate hand 30 is not swung. Referring to Figure 6, yet another embodiment of the present invention is applicable to a torque wrench 90 having a single torque function. The torque wrench 90 includes a wrench head 92 assembled at one end of the body 94, and the torque wrench 9 has been set to have only a function of providing a single preset torque value. Further, the electromagnetic force mechanism disclosed in the embodiment may include the electromagnetic force mechanism in the foregoing embodiments, and only the electromagnetic force mechanism 7 is used as an example for illustration. The use of the torque wrench 90 is the same as that of the foregoing embodiments, that is, the electromagnetic force mechanism generates a magnetic force, and the swing of the wrench head 92 is restricted; when the torque and the preset torque of the torque wrench 9 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. 9 1330575 According to the description of the above embodiments, the present invention has the following advantages: First, the present invention utilizes an electromagnetic force device as an automatic tripping mechanism, and a link type tripping mechanism is manufactured compared to the conventional metal component processing. This hair _ structure is more streamlined. In addition, the electromagnetic force device can eliminate the aging and deformation of components, so the accuracy of tripping 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 of the present invention, and is not intended to limit the scope of the invention, and the scope of the invention is limited to the technical scope of the invention. The scope of the rights covered by the contents of the "Scope of Application for Patent Application" is the scope of the rights of the applicant. BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is an external view of the present invention. Figure 2 is one of the schematic diagrams of the first embodiment of the present invention. Figure 3 is a second schematic view of the first embodiment of the present invention. 4 is a schematic view of a second embodiment of the present invention. FIG. 5 is a second schematic diagram of the second embodiment of the present invention. Figure 6 is a schematic view of a third embodiment of the present invention. 1330575 [Key component symbol description], digital torque wrench 10, 90 body 20, 94 wrench head 30, 92 head 32 strain section 34 torque setting device 40 ® display device 50 strain sensor 60 comparator 66 electromagnetic force mechanism 70, 80 control device 72, 82 electromagnet 74 first control element 721 • second control element 722 rod body 821 block 822