TWI426002B - Digital torque wrench structure and the way to grip the force - Google Patents

Description

Digital torque wrench structure and method for balancing the same

The invention relates to a digital torque wrench, in particular to a digital torque wrench structure capable of reading the same torque value at any point on the grip and a method for equalizing the force.

Press, screwdrivers, sleeves, wrenches, etc. are widely used in mechanical assembly or maintenance, for each screw-on component of a machine or part, such as screws or bolts, to be locked or disassembled. Operation, however, in some high-precision machines, each screw-locking component has a certain procedure and proper torque operation requirements. If the operation is inadvertent, the screw-locking component or the screw hole may be damaged or damage the machine itself. The operation function and precision, but the conventional hand tool can not detect and display the torque function when the force is applied. Therefore, the user cannot understand the actual torque value, and the hand tool must be operated by experience. There may be problems with improper manipulation of human torque.

In addition, if you want to combine the torque detector with the requirements of each hand tool, to design and manufacture different torque detection hand tools, you must spend more design and manufacturing costs, and it is not applicable to all hand tools. Operational situations, which are not conducive to practical application operations, cannot be directly provided to the industry.

For a conventional torque wrench, even if a torque display device is provided to display the torque value during operation, the position of the grip of the hand grip wrench of the hand grip column may be different due to the use of this. Torque values vary and are subject to errors, especially when used on precision components or medical procedures.

Therefore, how to apply a force at any point on the grip can achieve the same torque value, which is an urgent task for the problem of torque wrenches used in precision components or medical operations.

In view of the above, it is an object of the present invention to provide a digital torque wrench structure that achieves the same torque value regardless of the force applied at any point of the grip and a method for equalizing the force.

Therefore, in order to achieve the above object, the present invention provides a digital torque wrench structure, comprising: a triggering portion; a sensor having one end connected to the triggering portion, and two strain gauges are respectively engaged on both sides of the sensor. An adjusting hole is respectively disposed at two ends of the sensor; a connecting rod having one end connected to the end of the sensor away from the pulling portion; a grip connecting the connecting rod away from the end of the sensor; and a digital display Is disposed on the connecting rod or the handle, and is electrically connected to the sensor to display the torque value of the sensor; wherein the thickness of the adjusting holes on both sides of the sensor has been implemented by a fixture The force method is adjusted to apply the same torque value to any point on the grip.

In order to achieve the above object, a method for equalizing the grip of a digital torque wrench is provided, the steps of which include: Step 1: connecting one end of the sensor to a jig having a test rod and a suspension plate, the test The linkage simulates the connecting rod structure, the suspension is simulated to apply the structure of the grip, and the suspension has at least two test positions and an intermediate position; Step 2: connecting the other end of the sensor to a torsion detection The torque detector is configured to detect a torque value generated by the deformation of the two strain gauges; step 3: setting at least one weight having a predetermined weight at the intermediate position; and step 4: recording the torque detection The torque value displayed by the instrument is defined as a reference torque value; Step 5: at least one weight having a predetermined weight is set on one of the test positions; Step 6: recording the display by the torque detector Torque value; Step 7: Compare the recorded torque value with the reference torque value; Step 8: If the error between the two is greater than one, adjust the thickness of the two sides of the adjustment hole of the sensor, and repeat the step 5, until the error between the recorded torque value and the reference torque value is equal to or less than one; and step 9: if the recorded torque value and the reference torque value are equal to or less than one, the predetermined weight of the 砝The code is swapped at the other test locations and step 6 is repeated.

The detailed features and advantages of the present invention are described in detail in the embodiments of the present invention, which are to be understood by those of ordinary skill in the art. The objects and advantages associated with the present invention can be readily understood by those skilled in the art.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The preferred embodiments of the present invention will be described in detail below with reference to the drawings.

Please refer to FIG. 1 to FIG. 3, wherein FIG. 1 is a top perspective view showing the digital torque wrench of the present invention, FIG. 2 is a side perspective view showing the digital torque wrench of the present invention, and FIG. 3 is a digital torque wrench of the present invention. The top view of the sensor.

The digital torsion wrench 1 of the present invention comprises a triggering portion 2, a sensor 3, two strain gauges 4, a connecting rod 5, a grip 6 and a digital display 7.

The triggering portion 2 is connected to one end of the sensor 3, and the other end of the sensor 3 is connected to one end of the connecting rod 5, the other end of the connecting rod 5 is connected to one end of the grip 6, and the digital display 7 is disposed on the connecting rod 5 Or the grip 6, the present invention is described in the structure of the digital display 7 on the grip 6, but not limited thereto; in addition, the grip 6 has an accommodation space S, and the battery can be installed. 8 to provide power to the digital display 7.

Two strain gauges 4 are respectively engaged on the two sides of the sensor 3, and an adjustment hole 31, 32 is respectively disposed at two ends of the adjacent sensor 3, and the two adjustment holes 31, 32 are mutually penetrated, wherein the adjustment hole 31 of the sensor 3, The thickness of both sides of the 32 has been adjusted by a fixture 10 (please refer to FIG. 4 and FIG. 5) to perform the equalization method, and any point on the grip 6 (as shown in FIG. B, C) The force can produce the same torque value, and the method of equalization will be detailed later.

Please refer to FIG. 4 to FIG. 6 , wherein FIG. 4 is a block diagram showing the method for balancing the grip of the digital torque wrench of the present invention, and FIG. 5 is a diagram showing the fixture used for the method for balancing the grip of the digital torque wrench of the present invention. In conjunction with a side view of the sensor, Figure 6 is a top plan view of the fixture in combination with the sensor for the grip force equalization method of the digital torque wrench of the present invention.

The method for equalizing the grip of the digital torque wrench of the present invention comprises the following steps: Step S1: connecting one end of the sensor 3 to the jig 10, the jig 10 has a test rod 11 and a suspension plate 12, and the test rod 11 is simulated. The structure of the connecting rod 5, the suspension plate 12 simulates the structure of the grip 6, and the suspension plate 12 has at least two test positions A1, C1 and an intermediate position B1; Step S2: connecting the other end of the sensor 3 to a torque The detector 13 is used to detect the torque value generated by the deformation of the deformation of the two strain gauges; step S3: setting at least one weight 14 having a predetermined weight on the intermediate position B1; step S4: recording the torque The torque value displayed by the detector 13 is defined as a reference torque value; step S5: at least one weight 14 having a predetermined weight is set on one of the test positions A1; step S6: the recording is displayed by the torque detector 13 Torque value; step S7: comparing the recorded torque value with the reference torque value; step S8: if the error between the two is greater than one, adjusting the thickness of each of the adjustment holes 31, 32 of the sensor 3, and repeating step S5 Until the recorded twist The error between the value and the reference torque value is equal to or less than one; and step S9: if the recorded torque value and the reference torque value are equal to or less than one, the predetermined weight of the weight 14 is replaced at the other test position C1, And repeat step S6.

The suspension plate 12 is rectangular, and at least two test positions are four test positions, which are respectively disposed at four corners of the suspension plate 12, and the test position adjacent to the test rod 11 is A1 to correspond to the digital torque wrench 1 The point of application A of the grip 6, the test position away from the test rod 11 is C1 to correspond to the point C of the grip 6 of the digital torque wrench 1, and the intermediate position B1 between the test positions A1 and C1 Corresponding to the point B of the grip 6 of the digital torque wrench 1 .

Furthermore, the method of adjusting the thickness of each of the adjustment holes 31 and 32 of the sensor 3 can be adjusted by using a trowel to adjust the thickness, but it is not limited thereto.

Therefore, by the gripping method of the above-mentioned digital torque wrench, when the sensor 3 is adjusted to the different application points A, B, and C of the grip 6, the same torque can be obtained by changing the digital value of the analog value. The value is such that the user can avoid errors when using the adjusted digital torque wrench.

In summary, the present invention is only described as a preferred embodiment or embodiment of the technical means for solving the problem, and is not intended to limit the scope of the invention. That is, the equivalent changes and modifications made in accordance with the scope of the patent application of the present invention or the scope of the invention are covered by the scope of the invention.

1. . . Digital torsion wrench

2. . . Trigger

3. . . sensor

31. . . Adjustment hole

32. . . Adjustment hole

4. . . Strain gauges

5. . . Connecting rod

6. . . Grip

7. . . Digital display

8. . . battery

10. . . Fixture

11. . . Test rod

12. . . Suspension

13. . . Torque tester

14. . . Weight

A. . . Force point

A1. . . Test location

B. . . Force point

B1. . . middle place

C. . . Force point

C1. . . Test location

Steps S1 to S9 implement various steps of the method for balancing the grip of the digital torque wrench of the present invention

BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is a top perspective view showing a digital torque wrench of the present invention.

Figure 2 is a side perspective view showing the digital torque wrench of the present invention.

Figure 3 is a top plan view showing the sensor of the digital torque wrench of the present invention.

Figure 4 is a block diagram showing the method of balancing the grip of the digital torque wrench of the present invention.

Fig. 5 is a side elevational view showing the jig combining sensor used in the method of gripping the grip of the digital torque wrench of the present invention.

Fig. 6 is a top plan view showing the jig combining sensor used in the grip equalizing method of the digital torque wrench of the present invention.

1. . . Digital torsion wrench

2. . . Trigger

3. . . sensor

31. . . Adjustment hole

32. . . Adjustment hole

4. . . Strain gauges

5. . . Connecting rod

6. . . Grip

7. . . Digital display

8. . . battery

Claims (5)

The utility model relates to a gripping method for a digital torque wrench, which is suitable for a digital torque wrench. The digital torque wrench has a triggering portion, a sensor, two strain gauges, a connecting rod, a grip and a digital display. The sensor The two ends of the sensor are respectively connected to the two strain gauges, and the two strain gauges are respectively disposed adjacent to the two ends of the sensor, and an adjustment hole is respectively disposed adjacent to the two ends of the sensor. The step includes: Step 1: connecting one end of the sensor to a jig, the jig has a test rod and a suspension plate, the test rod simulates the connecting rod structure, and the suspension plate simulates the force applied to the grip Structure, and the suspension plate has at least two test positions and an intermediate position; Step 2: connecting the other end of the sensor to a torsion detector for detecting deformation of the two strain gauges Torque value; step 3: setting at least one weight having a predetermined weight at the intermediate position; step 4: recording the torque value displayed by the torque detector and defining it as a reference torque value; Step 5: setting at least one weight having a predetermined weight on one of the test positions; step 6: recording the torque value displayed by the torque detector; and step 7: comparing the recorded torque value with the reference Torque value; Step 8: If the error between the two is greater than one, adjust the thickness of the adjustment holes on both sides of the sensor, and repeat step 5 until the recorded error between the torque value and the reference torque value And equal to or less than one; and step 9: if the recorded torque value and the reference torque value are equal to or less than one, the weight of the predetermined weight is replaced at the other of the test positions, and step 6 is repeated. The method of claim 1, wherein the suspension is rectangular, and the at least two test positions are four test positions, respectively disposed at four corners of the suspension. The method of claim 1, wherein the method of adjusting the thickness of the two sides of the adjusting holes of the sensor is performed by using a trowel to thin the thickness for adjustment. A digital torque wrench structure includes: a triggering portion; a sensor having one end connected to the pulling portion, and two strain gauges are respectively engaged on both sides of the sensor, and an adjustment is respectively disposed adjacent to the two ends of the sensor a connecting rod having one end connected to one end of the sensor away from the trigger portion; a grip connecting the connecting rod away from the end of the sensor; and a digital display disposed on the connecting rod or the grip And electrically connected to the sensor to display the torque value of the sensor; wherein the thickness of the two sides of the adjusting hole of the sensor has been adjusted by a fixture to adjust the force on the grip At any point, the force applied produces the same torque value. The digital torque wrench structure according to claim 4, wherein the jig has a test rod and a suspension plate, and the test rod simulates the connecting rod structure, and the suspension plate simulates the force applied to the grip The structure has the at least two test positions and an intermediate position.