TW201545841A - Torque wrench - Google Patents

Abstract

The present invention relates to a torque wrench, which comprises a main bar, a grip bar, a working-head bar, and an internal bar, wherein the main body has a spring received therein. The grip bar is fit to an end of the main body in such a way as to push against an end of the spring and the grip bar has an inside surface that is screwed to the main bar in order to press against the spring. The internal bar is received in a receiving space with an end thereof normally biased by the spring. The working-head bar has an end inserted into an opposite end of the main bar. A detachment mechanism is coupled between the working-head bar and the internal bar. The working-head bar includes an inclined-cut engagement surface formed on a portion thereof inserted into the main bar. The inclined-cut engagement surface is provided with a torque detection unit mounted thereto. The main bar has a surface on which a digital processing unit that has a torque display device mounted. The digital processing unit is electrically connected to the torque detection unit. As such, when an operator is carrying out a screwing operation, the precise digital measurement and the mechanical detachment alarm are both achieved.

Description

Torque wrench

The invention relates to a torque wrench, which is a torque wrench integrated with digital sensing and mechanical tripping, so that the operator can have accurate digital measurement and mechanical jump when performing screw locking operation. Take off the warning.

According to the technical field of mechanical assembly, bolts and nuts are used to lock various components, which is a relatively well-known fixing method. However, because each person's feeling of strength is not the same, and some special combinations are not as tight as possible, so there is a torque wrench to ask the market, so that every screw lock operation, even in different people Under the operation, the same torque requirement can also be achieved; however, the torque wrench has a pure mechanical design. When the user applies a force close to the preset torque value, the torque wrench will generate a swinging feel. The user is reminded that there is also an electronic torque wrench with a display module for the user to obtain information about the torque value through the display module.

Please refer to the Republic of China Patent No. M400911 "torque wrench with vibration warning effect", which includes: a rod body, the rod system is a hollow structure body and a ratchet wheel for connecting the sleeve is provided at the front end thereof. The set body is different from the ratcheting actuating group, and a holding portion and a setting group are sequentially disposed. The setting group includes a display and a plurality of function keys, and the function of the function key can set the torque value or change the display. a display mode; a plug is set in the metal tube in the rod body; and a vibration set is set in the metal tube, the position of the vibration group corresponds to the grip portion of the rod body; when the torque reaches the set value during the operation The sensing display device issues a command to actuate the vibration motor. Since the vibration motor is mounted on the grip, the vibration can be directly transmitted to the operator's palm, indicating that the operation must be stopped immediately.

The above is a conventional digital torque wrench structure, which is configured to display and display the torque value through the setting group. When the rod body is subjected to the set torque value, it can pass through a The vibration effect indicates that the operator has reached the turning force to be applied; however, the design of the vibrating type relative to the mechanical jumping type does not have some micro-rotation segments generated after the trip, so the user is prompted to vibrate When it is produced, it is often impossible to stop the rotation and lead to excessive locking, and subsequent fine adjustment of the screw is required to affect the construction efficiency.

In view of this, the present inventors have intensively discussed the above-mentioned conventional creation problems, and actively pursued solutions through years of experience in research and development and manufacturing of related industries. After long-term efforts in research and development, the present invention has finally succeeded in developing the present invention. "Torque Wrench" is a kind of torque wrench that integrates digital sensing and mechanical tripping. It enables the operator to have precise digital measurement and mechanical jump warning when performing screw lock operation.

The invention relates to a torque wrench, which is a torque wrench integrated with digital sensing and mechanical jumping, so that the operator can have accurate digital measurement and mechanical jump warning when performing screw locking operation.

In order to achieve the above-mentioned creative purpose, the "torque wrench" of the present invention comprises a main body member, a handle bar member, a working head member and an inner member. The inner surface of the main body member is an accommodation space. The main body member is provided with a spring in the accommodating space, and the main body member is formed with a threaded portion on one end surface, and the shank member is sleeved against the end of the spring and is sleeved on the threaded portion of the main body member, and The inner surface of the grip bar member is screwed with the threaded portion to urge the spring, and the inner rod member is disposed in the accommodating space, and one end is elastically resisted by the spring; the end of the working head member is inserted into the main body The other end of the rod member, and the working head rod member and the inner rod member are coupled with a tripping mechanism, and the portion of the working head rod member inserted into the body rod member is formed with a chamfering abutting surface, the chamfering mating surface a torque sensing unit is disposed; the surface of the body member is provided with a digital processing unit having a torque display, and the digital processing unit is electrically connected to the torque sensing unit; thus, the handle member is opposite to the body member through the handle member. Spiral, control spring The inner rod is adjusted to adjust the torsion force of the tripping mechanism, thereby affecting the deformation of the torsion sensing unit, so that the torsion display will set the value of the trip as a display effect, and the user needs to perform the screw effect. During the lock operation, when the user exerts a force exceeding the torsion force that the trip mechanism can withstand, the work head member and the inner member member are idling, as a torque value reaches a critical prompt and prevents excessive Reverse the application.

The working head member has two chamfering bonding surfaces, and the two beveling bonding surfaces are horizontally corresponding to each other, and the two torsion sensing units are respectively disposed on a beveling bonding surface, and the working head member is in two A stress hole is formed between the beveled bonding surfaces, and two sides of the main body member are formed with a torsion force sensing unit to be electrically connected to the perforation of the digital processing unit.

It can be seen from the above-mentioned creations that when the torque setting of the "torque wrench" of the present invention is adjusted, the screw rotation of the handle bar member relative to the main body member can be directly achieved, so that the operator can synchronize the screw lock operation. Applying the idling effect of the tripping structure as an application of the torque value to the critical prompt and preventing excessive twisting; therefore, the invention can be said to be a quite practical and progressive creation, which is quite worthy of promotion by the industry. All in the public.

1‧‧‧ body rod

11‧‧‧ accommodating space

12‧‧‧ Spring

13‧‧‧Threaded section

14‧‧‧Digital Processing Unit

15‧‧‧Perforation

2‧‧‧handle bar

3‧‧‧Working heads

31‧‧‧Chamfered fit

32‧‧‧Torque sensing unit

33‧‧‧stress holes

4‧‧‧Internal rods

5‧‧‧Bounce mechanism

The first figure is a perspective exploded view of the digital torque wrench of the present invention.

The second figure is a perspective view of the appearance of the digital torque wrench of the present invention.

The third figure is a schematic cross-sectional view of the digital torque wrench of the present invention.

The fourth figure is a schematic cross-sectional view of the spring of the grip bar of the present invention after being screwed.

The invention relates to a torque wrench, which is a torque wrench integrated with digital sensing and mechanical jumping, so that the operator can have accurate digital measurement and mechanical jumping warning when performing screw locking operation. Referring to the first to fourth figures, the "torque wrench" of the present invention has a main body member 1, a grip member 2, a working head member 3 and an inner rod member 4; the inner surface of the main body member 1 The main body member 1 is provided with a spring 12 in the accommodating space 11 , and the main body member 1 is formed with a threaded portion 13 on one end surface thereof, and the handle member 2 is pushed against The end portion of the spring 12 is sleeved on the threaded portion 13 of the main body member 1, and the inner surface of the handle member 2 is screwed with the threaded portion 13 to urge the spring 12, and the inner rod member 4 is disposed in the accommodating portion. The space 11 and one end are elastically resisted by the spring 12; one end of the working head member 3 is inserted at the other end of the main body member 1, and the working head member 3 and the inner rod member 4 are coupled with a tripping mechanism 5 And the portion of the working head member 3 inserted into the main body member 1 is formed with a chamfered abutting surface 31, and the chamfered engaging surface 31 is There is a set torque The sensing unit 32 (the torque sensing unit 32 is selected from the strain gauge); the surface of the main body member 1 is provided with a digital processing unit 14 having a torque display, and the digital processing unit 14 is coupled to the torque sensing unit. 32 electrical connection; thus, through the grip bar 2 relative to the main body member 1 screw, the control spring 12 is forced against the inner bar member 4, in order to adjust the torsion force that the trip mechanism 5 can withstand, thereby affecting the torque sensing The deformation of the unit 32 causes the torque display to set the value of the trip as a display effect. When the user performs the screw lock operation, when the user applies the force beyond the torque that the trip mechanism 5 can withstand, The working head member 3 and the inner rod member 4 are idling as an application in which the torque value reaches a critical prompt and prevents excessive twisting.

Further, the working head member 3 has two chamfered bonding faces 31, and the two beveled bonding faces 31 are horizontally corresponding to each other, and the two torsion sensing units 32 are respectively disposed on a beveled bonding surface. 31, the working head member 3 is inserted through a stress hole 33 between the two beveled bonding surfaces 31. The two sides of the main body member 1 are formed with a torque sensing unit 32 for electrical connection to the digital position. The perforations 15 of the processing unit 14.

It can be seen from the above-mentioned creations that the "torque wrench" of the present invention can achieve the adjustment of the torque value setting directly through the screw rotation of the handle bar member 2 relative to the main body member 1, so that the operator can perform the screw lock operation. Simultaneously applying the idling effect of the tripping structure 5 as an application in which the torque value reaches the critical prompt and prevents excessive twisting; in addition, the torque sensing unit 32 presents the tilted profile to the work through the chamfered mating surface 31. The head rod member 3 is thus bent and deformed in a fixed direction each time it is deformed by the inner rod member 4, and can be arranged in a manner parallel to the fitting arrangement of the rod member, thereby being able to overcome the direction of bending deformation when each pressing force is different. Disadvantages to improve the accuracy of the torque sensing unit 32.

In summary, the "torque wrench" of the present invention is practical in terms of structural design and practical use, and the disclosed structural invention has an unprecedented innovative structure, so it has "novelty" Undoubtedly, the invention can be more effective than the conventional structure, and therefore has "progressiveness", which fully complies with the provisions of the invention patent application related to the Patent Law of the People's Republic of China. Therefore, the patent application is filed to the bureau in accordance with the law. The bureau can grant the patent right in this case as soon as possible.

1‧‧‧ body rod

11‧‧‧ accommodating space

12‧‧‧ Spring

13‧‧‧Threaded section

14‧‧‧Digital Processing Unit

15‧‧‧Perforation

2‧‧‧handle bar

3‧‧‧Working heads

31‧‧‧Chamfered fit

32‧‧‧Torque sensing unit

33‧‧‧stress holes

4‧‧‧Internal rods

5‧‧‧Bounce mechanism

Claims (2)

The utility model relates to a torque wrench, which comprises a main body rod member, a grip rod member, a working head rod member and an inner rod member, wherein the inner surface of the main body rod member is an accommodating space, and the main body rod member is accommodated The space is provided with a spring, and the main body member is formed with a threaded portion on one end surface, and the handle member is sleeved against the end of the spring and is sleeved on the threaded portion of the main body member, and the handle member is inside the handle member. The surface is screwed with the threaded portion to urge the spring, the inner rod is disposed in the accommodating space, and one end is elastically biased by the spring; the working head member is inserted at one end of the main body member at the other end, and The work head member is coupled to the inner rod member and has a tripping mechanism, and the portion of the working head member that is inserted into the main body member is formed with a chamfering abutting surface, and the chamfering engaging surface is provided with a torsion sensing unit The surface of the main body member is provided with a digital processing unit with a torque display, and the digital processing unit is electrically connected to the torque sensing unit. According to the torque wrench of the first aspect of the patent application, the working head member has two chamfering bonding surfaces, and the two beveling bonding surfaces are horizontally corresponding to each other, and the two torsion sensing units are respectively disposed at a chamfering a mating surface, the working head member is inserted through a stress hole between the two beveling bonding surfaces, and two sides of the main body member are formed with a torsion sensing unit to be electrically connected to the digital processing unit. .