1327507 九、發明說明： 【發明所屬之技術領域】 本發明是有關於一種數位定扭力扳手，且特別是有關 於一種可以顯示設定扭力，並於承受力量超過設定扭力 時，會產生跳脫而無法繼續施力之數位定扭力扳手。 【先前技術】 傳統之數位扭力扳手具有可以將設定之扭力加以顯 示之特點。當其所承受之力量到達設定扭力時，會警告使 用者，包括以聲響、燈光或是震動等方式知會使用者。但 是這些警示系統都各有其缺點，例如使用者有可能忽略警 示訊號而繼續施力，或者是因為電力不足而無法產生警示 訊號，使得鎖緊力道過大而造成機件故障或使機件無法發 揮預期效能。 【發明内容】 本發明係有關於一種數位定扭力扳手，除了可以顯示 設定扭力外，在鎖緊扭力達到設定值時，以獨特之機構設 計產生瞬間鬆放之手感，避免鎖緊扭力過大，讓使用者可 以快速而可靠的進行鎖固作業。 根據本發明，提出一種數位定扭力扳手，包括一套 管、一驅動本體、一跳脫機構、一扭力設定機構及一顯示 模組。驅動本體插入套管内並與套管樞接，使驅動本體可 於套管内轉動。跳脫機構與驅動本體以可相對活動之方式 1327507 . I « . 、連接，扭力設定機構用以施加一設定扭力於跳脫機構。·顯 示模組用以顯示設定扭力。當驅動本體所承受之力量大於 設定扭力時，驅動本體推動跳脫機構，使驅動本體瞬間無 法受力。 根據本發明，提出另一種數位定扭力板手，包括一套 管、一驅動本體、一跳脫機構、一扭力設定機構、一顯示 模組及一感測元件。驅動本體插入套管内並與套管樞接， 使驅動本體可於套管内轉動。跳脫機構與驅動本體以可相 ® 對活動之方式連接，扭力設定機構用以施加一設定扭力於 跳脫機構。顯示模組用以顯示設定扭力。感測元件設置於 驅動本體上，用以根據驅動本體之應變量輸出訊號至顯示 模組，以顯示驅動本體所承受之力量。當驅動本體所承受 之力量大於設定扭力時，驅動本體推動跳脫機構，使驅動 本體瞬間無法受力。 為讓本發明之上述内容能更明顯易懂，下文特舉一較 佳實施例，並配合所附圖式，作詳細說明如下： 【實施方式】 請參照第1A圖，其繪示本發明一較佳實施例的一種 數位定扭力扳手之外觀示意圖。數位定扭力扳手100之外 觀主要包括一套管110、一驅動本體120、一顯示模組150 以及一扭力調整元件160。本實施例中，驅動本體120較 佳地係採用一棘輪頭模組，可以讓使用者在進行鎖緊操作 時更為方便。請參照第1B圖，其繪示本發明一較佳實施 7 1327507 例的一種數位定扭力扳手之内部結構示意圖。數位定扭力 扳手100之結構主要包括驅動本體12〇、跳脫機構13〇、 扭力設定機構140。驅動本體12〇插入套管11〇内並與套 官110以固疋梢126樞接，使驅動本體120可於套管11〇 内轉動。跳脫機構130與驅動本體丨2〇之間，係以連桿17〇 連接，使跳脫機構130與驅動本體12〇可相對活動，且彼 此之間僅能在連桿170的連接方向上承受軸向力。扭力設 疋機構140用以设定並施加一設定杻力於跳脫機構 上，並將設定扭力於顯示模組15〇上。當驅動本體12〇所修 承受之力量大於設定扭力時，驅動本體12〇會推動跳脫機 構130，使驅動本體120瞬間無法受力。因此，使用者在 瞬間會感受到鬆脫之手《，知會使用者已達到預計之鎖緊 強度。因此，本實施例之數位定扭力扳手1〇〇，利用觸覺 (手感）傳達給使用者已經達到預計鎖緊強度之訊息，以 便於使用者專注於鎖緊操作，增加工作效率。 此外，其中驅動本體120更包括一可調整長度之螺桿 128，用以在當跳脫機構13〇被推動時抵住套管ιι〇之内隹 壁’以限制驅動本體12〇之轉動角度。因此，每當跳脫機 構130被推動時，其所承受來自驅動本體12〇之力量係維 持一固定角度，因此對連桿170方向之分力與總力的比值 為一疋值。而且螺桿128可以防止驅動本體12〇過度轉 動，避免連桿170無法回復為正常狀態。而套管11〇與螺 桿128接觸的部位可以加以強化，以增加使用壽命。〇 扭力設定機構140主要係由彈性元件142、推塊146、 8 1327507 . . ，桿體144及扭力調整元件160所組成。彈性元件142可以 是彈簧或彈片，用以提供設定扭力。本實施例中彈性元件 142係為一彈簀，分別抵住跳脫機構130及推塊146。桿 體144連結推塊146，扭力調整元件160用以施加力量於 桿體144，以調整設定扭力。第一感測元件148用以感測 設定扭力，並輸出感測訊號至顯示模組150以顯示設定扭 力。第一感測元件148可以使用包括壓電材料或可變電阻 元件的方式，對應所承受之壓力而產生不同電壓或改變電 ® 阻值；或者是使用位元產生器（encoder)，將所承受之壓 力轉換成數位訊號。將對應之電壓、電阻或數位訊號傳至 顯示模組150，以顯示對應之設定扭力值。而第一感測元 件148可設置之位置不僅於此，也可以設置於彈性元件142 對應於跳脫機構130之另一端，或是設置於彈性元件142 内部。 另外，扭力調整元件160更可包括驅動元件（未繪 示），用以帶動桿體144。其中，桿體144可以是螺桿，驅 ® 動元件可以是馬達，當馬達接受驅動訊號時即帶動螺桿旋 轉。而推塊146之内壁有對應之螺紋，因此桿體144可以 帶動推塊146往前推以產生設定扭力；或者是，驅動元件 可以是活塞，當活塞接受驅動訊號時即帶動桿體144進行 軸向運動，直接帶動推塊146前進或後退來設定扭力。因 此，本實施例中數位定扭力扳手100更可包括一與驅動元 件耦接之數位扭力設定模組（未繪示），例如以按鍵的方 式進行扭力設定，並根據設定扭力輸出驅動訊號至驅動元 9 1327507 件，調整推塊146的位置來設定扭力值。當然，使用者也 可以使用手動調整，對照顯示模組150所顯示之扭力值來 調整設定扭力。 然而，本發明之技術不僅限於此。驅動本體120的支 撐桿體124上更設置有第二感測元件125a、125b，用以根 據驅動本體120之支撐桿體124因受力所產生之應變量， 輸出訊號至顯示模組150，以顯示驅動本體120所承受之 力量。 請參照第2圖，其繪示本發明較佳實施例之數位定扭 力板手的感測元件之設置不意圖。驅動本體12 0之支撐桿 體124上更包括一結合部124c，第二感測元件125a係以 黏接或焊接之方式設置於結合部124c上。其中結合部124c 具有溝槽124a，第二感測元件125a係跨越溝槽124a之兩 端設置。由於驅動本體120在承受扭力時，支撐桿體124 會對應產生内部彎矩（bend i ng moment)並在承受彎矩的兩 側面上造成形變，而溝槽124a所在的位置可以讓形變量 集中，使第二感測元件125a的感應效果更為靈敏。同樣 的道理，在另一側面上也可以形成溝槽124b，並設置另一 第二感測元件125b。 惟本貫施例雖以分別設置第二感測元件12 5 a、12 5 b 於支撐桿體124相對的兩側面上，但本發明並不以此為 限，亦可僅形成單一感測元件於單一側面上。第二感測元 件125a、125b係可以用壓阻材料或是應變規（strain gage) 來製作；或者也可以使用特殊之微機電感測器（micro 1327507 .electro-mechanical sensor)，、經由才莫I且4匕之後再力口卫言史 置於結合部124c來感應形變量。所感應之形變量可以經 由第二感測元件125a、125b轉換成電子訊號，再將電子 訊號配合系統晶片（system on chip, S0C)内部的電子電 路進行處理。經適當的校正以及單位轉換後，換算成使用 者施加的力量值，並顯示於顯示模組15 0上。因此，本實 施例之顯示模組150可以同時顯示來自第一感測元件148 之設定扭力，以及來自第二感測元件125a、125b之承受 • 力量，兩者可以互相參照。當兩者有相當程度的誤差時， 即代表可能有故障或金屬疲乏等老化現象發生。因此本實 施例之數位定扭力扳手具有兩套感測系統，可以確保扭力 設定與承受應力之間保持一致。 本發明上述實施例所揭露之數位定扭力板手，係以數 位顯示模組加上機械式之跳脫機構設計，讓使用者可以得 知設定扭力，並在操作過程中可以藉由觸覺感知是否到達 鎖緊力量標準。並且由於具有兩套感測系統，可以比對設 ® 定扭力與承受應力是否一致，確保操作的可靠性。 綜上所述，雖然本發明已以一較佳實施例揭露如上， 然其並非用以限定本發明。本發明所屬技術領域中具有通 常知識者，在不脫離本發明之精神和範圍内，當可作各種 之更動與潤飾。因此，本發明之保護範圍當視後附之申請 專利範圍所界定者為準。 1327507 【圖式簡單說明】 第1A圖繪示本發明一較佳實施例的一種數位定扭力 扳手之外觀示意圖； 第1B圖繪示本發明一較佳實施例的一種數位定扭力 扳手之内部結構示意圖；以及 第2圖繪示本發明較佳實施例之數位定扭力扳手的 感測元件之設置不意圖。1327507 IX. Description of the Invention: [Technical Field] The present invention relates to a digital fixed torque wrench, and particularly relates to a display capable of displaying a set torque, and when the bearing force exceeds a set torque, a trip can occur Continue to apply the digital fixed torque wrench. [Prior Art] A conventional digital torque wrench has the feature of being able to display a set torque. When the force it receives reaches the set torque, it alerts the user, including the user, by sound, light or vibration. However, these warning systems have their own shortcomings. For example, the user may ignore the warning signal and continue to exert force, or the power supply may not be able to generate a warning signal, causing the locking force to be too large, causing the mechanical failure or the mechanism to be disabled. Expected performance. SUMMARY OF THE INVENTION The present invention relates to a digital fixed torque wrench. In addition to displaying a set torque, when the locking torque reaches a set value, the unique mechanism design produces a momentary loose feel, thereby avoiding excessive locking torque. The user can perform the locking work quickly and reliably. According to the present invention, a digital fixed torque wrench is provided, comprising a set of tubes, a driving body, a tripping mechanism, a torque setting mechanism and a display module. The drive body is inserted into the sleeve and pivotally coupled to the sleeve to allow the drive body to rotate within the sleeve. The tripping mechanism and the driving body are relatively movable. 1327507. I, the connecting, torque setting mechanism is used to apply a set torque to the tripping mechanism. • The display module is used to display the set torque. When the driving body is subjected to a force greater than the set torque, the driving body pushes the tripping mechanism, so that the driving body cannot be forced momentarily. According to the present invention, another digital fixed torque wrench is proposed, comprising a set of tubes, a driving body, a tripping mechanism, a torque setting mechanism, a display module and a sensing component. The driving body is inserted into the sleeve and pivoted to the sleeve so that the driving body can rotate within the sleeve. The trip mechanism and the drive body are connected in a movable manner, and the torque setting mechanism is configured to apply a set torque to the trip mechanism. The display module is used to display the set torque. The sensing component is disposed on the driving body for outputting a signal to the display module according to the strain variation of the driving body to display the force of the driving body. When the driving body is subjected to a force greater than the set torque, the driving body pushes the tripping mechanism, so that the driving body cannot be forced momentarily. In order to make the above description of the present invention more comprehensible, a preferred embodiment will be described below in detail with reference to the accompanying drawings. FIG. 1A, FIG. A schematic view of the appearance of a digital fixed torque wrench of a preferred embodiment. The digital fixed torque wrench 100 mainly includes a sleeve 110, a driving body 120, a display module 150 and a torque adjusting component 160. In the embodiment, the driving body 120 preferably adopts a ratchet head module, which is convenient for the user to perform the locking operation. Please refer to FIG. 1B, which is a schematic diagram showing the internal structure of a digital fixed torque wrench according to a preferred embodiment of the present invention. The structure of the digital fixed torque wrench 100 mainly includes a driving body 12A, a tripping mechanism 13A, and a torque setting mechanism 140. The driving body 12 is inserted into the sleeve 11b and pivoted with the sleeve 110 at the locking tip 126, so that the driving body 120 can rotate within the sleeve 11b. The trip mechanism 130 and the driving body 丨2〇 are connected by a connecting rod 17〇, so that the tripping mechanism 130 and the driving body 12〇 are relatively movable, and can only bear in the connecting direction of the connecting rod 170 with each other. Axial force. The torque setting mechanism 140 is configured to set and apply a setting force on the trip mechanism and to torque the setting on the display module 15A. When the driving body 12 〇 is subjected to a force greater than the set torque, the driving body 12 推动 pushes the jumping line 130 so that the driving body 120 cannot be forced momentarily. Therefore, the user will feel the loose hand in an instant, and the user is informed that the expected locking strength has been achieved. Therefore, the digital fixed torque wrench of the present embodiment transmits a message to the user that the predicted locking strength has been reached by using the tactile sense (feel), so that the user can concentrate on the locking operation and increase the work efficiency. In addition, the driving body 120 further includes an adjustable length screw 128 for resisting the inner wall 套管 of the sleeve ι when the trip mechanism 13 〇 is pushed to limit the rotation angle of the driving body 12 。. Therefore, each time the jumper structure 130 is pushed, the force it receives from the drive body 12〇 maintains a fixed angle, so the ratio of the component force to the total force in the direction of the link 170 is a 疋 value. Moreover, the screw 128 prevents the drive body 12 from excessively rotating, preventing the link 170 from returning to a normal state. The portion of the sleeve 11 that is in contact with the screw 128 can be reinforced to increase the service life.扭 The torque setting mechanism 140 is mainly composed of an elastic member 142, a push block 146, an 8 1327507 , a rod body 144 and a torque adjusting member 160. The resilient member 142 can be a spring or a spring to provide a set torque. In this embodiment, the elastic member 142 is a magazine that abuts the trip mechanism 130 and the push block 146, respectively. The rod body 144 is coupled to the push block 146, and the torque adjusting member 160 is configured to apply a force to the rod body 144 to adjust the set torque. The first sensing component 148 is configured to sense the set torque and output a sensing signal to the display module 150 to display the set torque. The first sensing element 148 can use a piezoelectric material or a variable resistance element to generate different voltages or change the electric resistance value corresponding to the pressure to be subjected; or use a bit generator to bear The pressure is converted into a digital signal. The corresponding voltage, resistance or digital signal is transmitted to the display module 150 to display the corresponding set torque value. The position where the first sensing element 148 can be disposed is not limited thereto, and the elastic member 142 may be disposed at the other end of the tripping mechanism 130 or may be disposed inside the elastic member 142. In addition, the torsion adjusting member 160 may further include a driving member (not shown) for driving the rod body 144. The rod body 144 may be a screw, and the driving element may be a motor, and when the motor receives the driving signal, the screw is rotated. The inner wall of the push block 146 has a corresponding thread, so that the rod body 144 can push the push block 146 forward to generate a set torque; or the drive element can be a piston, and when the piston receives the drive signal, the rod body 144 is driven to perform the shaft. To move, directly push the push block 146 forward or backward to set the torque. Therefore, the digital fixed torque wrench 100 in the embodiment may further include a digital torque setting module (not shown) coupled to the driving component, for example, performing torque setting by means of a button, and outputting a driving signal to the driving according to the set torque. Element 9 1327507, adjust the position of push block 146 to set the torque value. Of course, the user can also use manual adjustment to adjust the set torque against the torque value displayed by the display module 150. However, the technology of the present invention is not limited to this. The support body 124 of the driving body 120 is further provided with a second sensing component 125a, 125b for outputting a signal to the display module 150 according to the strain generated by the supporting body 124 of the driving body 120. The force that the drive body 120 is subjected to is displayed. Referring to Figure 2, there is shown a schematic arrangement of the sensing elements of the digital fixed torque hand of the preferred embodiment of the present invention. The support body 124 of the driving body 120 further includes a joint portion 124c. The second sensing element 125a is disposed on the joint portion 124c by bonding or welding. The bonding portion 124c has a trench 124a, and the second sensing element 125a is disposed across both ends of the trench 124a. Since the driving body 120 is subjected to the torsion force, the supporting rod body 124 correspondingly generates an internal bending moment and deforms on both sides of the bending moment, and the position of the groove 124a can concentrate the shape variables. The sensing effect of the second sensing element 125a is made more sensitive. By the same token, the groove 124b can also be formed on the other side, and another second sensing element 125b can be provided. However, in the present embodiment, the second sensing elements 12 5 a, 12 5 b are respectively disposed on opposite sides of the support rod body 124, but the invention is not limited thereto, and only a single sensing element may be formed. On a single side. The second sensing elements 125a, 125b can be made of a piezoresistive material or a strain gage; or a special micro-inductive sensor (micro 1327507 .electro-mechanical sensor) can be used. After I and 4匕, the defensive history is placed in the joint 124c to sense the shape variable. The induced shape variable can be converted into an electronic signal by the second sensing elements 125a, 125b, and the electronic signal is processed by an electronic circuit inside the system on chip (S0C). After appropriate correction and unit conversion, it is converted into the force value applied by the user and displayed on the display module 150. Therefore, the display module 150 of the present embodiment can simultaneously display the set torque from the first sensing element 148 and the receiving force from the second sensing elements 125a, 125b, which can be mutually referenced. When there is a considerable degree of error between the two, it means that aging phenomena such as possible failure or metal fatigue may occur. Therefore, the digital torque wrench of the present embodiment has two sensing systems to ensure that the torque setting is consistent with the stress. The digital fixed torque wrench disclosed in the above embodiments of the present invention is designed with a digital display module and a mechanical tripping mechanism, so that the user can know the set torque and can sense the sense by the touch during the operation. Reach the lock strength standard. And because it has two sets of sensing systems, it can be compared with the fixed torque and the withstand stress to ensure the reliability of operation. In view of the above, the present invention has been disclosed in a preferred embodiment, and is not intended to limit the present invention. It will be apparent to those skilled in the art that various changes and modifications can be made without departing from the spirit and scope of the invention. Therefore, the scope of the invention is defined by the scope of the appended claims. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1A is a schematic view showing the appearance of a digital fixed torque wrench according to a preferred embodiment of the present invention; FIG. 1B is a view showing the internal structure of a digital fixed torque wrench according to a preferred embodiment of the present invention; FIG. 2 is a schematic view showing the arrangement of the sensing elements of the digital fixed torque wrench according to the preferred embodiment of the present invention.
12 1327507 【主要元件符號說明】 100 :數位定扭力扳手 110 :套管 120 :驅動本體 124 :支撐桿體 124a、124b :溝槽 124c :結合部 125a、125b :第二感測元件 126 :固定梢 128 :螺桿 130 :跳脫機構 14 0 :扭力設定機構 142 :彈性元件 144 :桿體 146 :推塊 148 :第一感測元件 15 0 :顯示模組 160 :扭力調整元件 170 :連桿 1312 1327507 [Description of main component symbols] 100: Digital fixed torque wrench 110: Sleeve 120: Drive body 124: Support rod body 124a, 124b: Groove 124c: Bonding portion 125a, 125b: Second sensing element 126: Fixed tip 128: Screw 130: Tripping mechanism 14 0: Torque setting mechanism 142: Elastic element 144: Rod 146: Push block 148: First sensing element 15 0: Display module 160: Torque adjusting element 170: Connecting rod 13