TWI500486B - Torque warning value of non-continuous interval of electronic torque tool - Google Patents

Description

Torque warning value for non-continuous interval electronic torque tools

The invention relates to an electronic torque tool, in particular, to an electronic torque tool in which the set value of the torque warning value is a discontinuity value.

The electronic torque tool, such as an electronic torque wrench, includes an electronic display screen and a plurality of buttons. The display screen can display the amount of force (torque) of the wrench during operation, so that the user can understand the degree of force applied. The electronic torque wrench has a torque warning value. When the force applied by the wrench reaches the torque warning value, a warning function is generated to remind the user to stop applying the force.

The user can adjust the torque warning value. In the torque setting mode, the button of the torque tool is used to increase or decrease the set warning value to meet the locking degree required for different screwing structures.

The numerical value of the increase or decrease of the torque warning value of the existing electronic hand tool is a change of continuity. For example, the current torque warning value of the torque wrench is 26 Newtons (N/m), and the next screw to be locked When the locking requirement is 34 Newtons, when the user presses the button of the wrench to change the warning value, the value of the warning value will be 26, 27, 28. . . 33, 34 consecutive beating, until the value shows 34. When the torque warning value is reset, the wrench will generate a warning when the force applied by the wrench reaches 34 Newtons.

In the setting range of the warning value, the warning value can be set to any value. For example, if the warning value that the wrench can set is in the range of 11~50 Newton, the warning value can be set to any value of the continuous value of 11~50. . Usually, the torque warning value is set to the torque value required to lock the screw. In the above example, the warning value is set to 34 Newtons, and the force applied by the wrench reaches 34 Newtons, and the user can feel the warning function. .

However, depending on the operational inertia, when the user hears or feels the warning effect At this time, the force of the wrench can not be stopped immediately, and the wrench will continue to be pulled for a short time to stop. At this time, the true locking force of the screw may reach 36 Newtons, exceeding the required 34 Newtons, causing excessive lock. Tight error.

Furthermore, due to the fear of excessive locking, the user always pays attention to the warning signal during the application of the force, delaying the operation time and affecting the smoothness of the operation.

The present invention is directed to solving the above-mentioned problems. The main purpose of the present invention is to provide an electronic torque tool capable of setting a torque warning value, and the set step of the value of the torque warning value is a set interval of the discontinuity value.

The electronic torque tool provided by the present invention comprises: a main body; at least one display unit is disposed on the main body to display various parameters or values of the wrench; and a plurality of buttons are disposed on the main body for setting the torque Torque warning value of the tool; The value setting interval of the torque warning value is a setting interval of the discontinuous value.

Therefore, the warning value setting interval of the discontinuity value is used, so that when the user sets the warning torque warning value, the torque warning value is lower than the locking force required by the screw to avoid excessive locking. .

In order to provide a further understanding of the objects, features and advantages of the present invention, the present invention will be described in detail below with reference to the accompanying drawings. among them:

The first figure is a perspective view of a first preferred embodiment of the present invention.

The second figure shows a schematic diagram of the numerical setting interval of the torque warning value according to a preferred embodiment of the present invention.

The third figure is an example of use of a preferred embodiment of the present invention.

The fourth figure is another use case of a preferred embodiment of the present invention.

Figure 5 is a partial top plan view of a second preferred embodiment of the present invention.

The electronic torque tool provided by the present invention can be a torque wrench, a torsion post or a torsion transmission tool. The preferred embodiment of the present invention is described by an electronic torque wrench.

Referring to the first figure, an electronic torque wrench (10) according to a first embodiment of the present invention includes: a main body (12), an elongated shaft, at least one display unit (14), A plurality of buttons (represented by component symbols 15, 16), a plurality of warning lights (17), and a sounding alert (not shown, such as a buzzer) are disposed on the body (12). One end of the main body (12) is a driving end, and a driving head (18) is provided. The driving head (18) can be a polygonal sleeve hole for socketing a screw (bolt or nut), or has a plug. The column is inserted into a sleeve. Various electronic information and numerical values of the torque tool are displayed on the display unit.

An operating unit and a sensing unit (not shown) are disposed in the body (12). The operating unit (eg, a microprocessor) is disposed in the circuit structure of the wrench to perform various electronic signals; the sensing unit can be a strain gauge or a Wyeth bridge. When the wrench (10) drives the screw (bolt or nut), the sensing unit detects the degree of application of the wrench and transmits a sensing signal (sensing value) to the operating unit, the operating unit The sensing signal is converted into a torque value and displayed on the display unit (14) for the operator to read the actual force application value during the operation. The wrench can be set to a torque warning value. If the driving force of the wrench exceeds the set torque warning value, the warning light (17) will illuminate and/or the sounding sounder will sound to provide an alarm value exceeding the warning value. One warning signal.

The buttons (15) and (16) include a power button and a number of function buttons, which can perform various functions such as, but not limited to, ON/OFF, inputting values, selecting, setting, and storing, and switching the display screen into Different user interfaces include: display torque, set torque, etc., and switch between male and female units. When the alarm value mode is set, the button (15) is the up button to increase the value, and the button (16) is the down button to decrease the value.

In the torque tool provided by the present invention, the setting interval of the torque warning value is a discontinuous step, that is, the torque warning value set by the user is a non-continuous value.

This embodiment is exemplified in the metric unit, and the torque range applicable to the wrench (10) is 11 Newtons to 60 Newtons (N/m). Please refer to the second figure. Assume that the torque warning value of the wrench is currently 30 Newtons. As shown in Figure A, in the setting mode of the warning value, when the up button (15) is pressed, the torque warning value will jump to the next one. The value is converted to 35 Newtons (A1), and the increasing key (15) is continuously pressed. The value of the warning value will be 40 Newtons (A2) and 45 Newtons (A3). . . Wait, and so on. Conversely, when the current torque warning value is 30 Newtons, when the down key (16) is pressed, the value of the warning value will be changed to 25 Newtons (A4), and when the down key is pressed, the warning value will become 20 Newtons (A5). . . Wait. It can be seen from the set values shown by the component symbols A to A5 in the second figure that the numerical interval (increase, decrease) of the torque warning value is the interval of the difference of 5 metric units, and is not a continuous value. The value of the torque warning value that can be set is an integer value, and does not include a decimal value below the decimal point. For example, it can only be set to an integer value such as 30.0, 35.0, etc., and cannot be set to a value including a small value such as 30.1 or 30.6.

The purpose of this design is that the present invention is intended to establish a mode of operation for the user: a mode in which the torque warning value is lower than the actual required torque value. Taking the third figure as an example, when the locking force (R) required for the part to be locked is 38 Newtons, the user can only set the torque warning value (S) of the wrench to 35 Newtons, which is close but not The warning value of the required locking force (R) is exceeded; the user cannot set the warning value (S) to 38 Newtons. Therefore, the user pulls the wrench to lock the screw to reach the warning value (S): 35 Newton, the operating unit of the wrench will drive the warning light or the buzzer to generate a warning function (alarm signal) to remind the user The force will reach the required locking force (R): 38 Newtons and prompt the user to stop applying force. At this time, the operator's inertia (the brain receives the warning signal to the brain to stop the force) will lock the screw (T) Arriving, for example, 37 Newtons, and the warning signal will also prompt the operator to view the display unit (14), to understand the current actual locking force (37 Newtons), and then lock the screw to the required locking force (R) : 38 Newtons.

Another use case is as shown in the fourth figure, if the locking force (R) required for the next screw to be locked is 24 Newtons, the user will use the minus button (16) in the torque setting mode. The torque warning value (S) is set to 20 Newtons, which is the value that does not exceed the required locking force (R). When the force applied by the wrench reaches the torque warning value (S) for 20 Newtons, a warning signal is generated to stop the operator from applying force. At this time, the inertia of the force will reach the actual locking force (T) of the screw to reach 22 or 23, for example. Newton, the user can carefully tighten the screw a little to the required locking force (R): 24 Newtons.

The actual locking force (T) generated by the force inertia has a torque value increase (Δt) exceeding the warning value (S). For example, the torque warning value (S) is 35 Newtons, and the force inertia is generated. The actual locking force (T) is 37 Newtons, and the torque increase (Δt) caused by the applied inertia is 2 Newtons.

In the operation mode designed by the present invention, after a plurality of operations, the operator's proficiency will become a skill, so that the torque value increase (Δt) formed by the inertial force is a fixed value. For example 2 or 3 Newtons (depending on the user).

Even the muscle memory accumulated by the proficiency can accurately control the increase of the torque value (Δt), for example, 2 to 4 Newtons. Therefore, if the difference between the torque warning value (S) (for example, 35 Newtons) and the required locking force (R) (for example, 38 Newtons) is 3 Newtons, the user can accurately control how long and how long after the user feels the warning signal. The force is applied to increase the torque value (Δt) of the applied inertia to 3 Newtons in order to accurately lock to the required locking force (R) without even having to look at the display unit (14) for confirmation.

The invention makes the torque warning value (S) a non-continuous numerical interval, thereby establishing an operation mode in which the torque warning value (S) is lower than the required locking force (R), as long as The torque warning value (S) that generates the warning function is lower than the required locking force (R), and the user can arbitrarily select the value of the warning value (S), for example, in the use example of the third figure, the required locking The force (R) is 38 Newtons and the torque warning value (S) can be set to 30 Newtons.

Moreover, also taking the use example of the third figure as an example, if the required locking force (R) is 40 Newtons, although the torque warning value (S) can be set to 40 Newtons, once the user establishes the operation of the present invention, In the mode, the warning value (S) will not be set at 40 Newtons, but will only be set below the value of the locking force (R), for example 35 Newtons.

The value setting interval of the torque warning value of the present invention is not limited to the embodiment shown in the present specification, and any numerical interval greater than 2 can be applied to the present invention, for example, the value of the torque warning value (S) is 3, 6 or 10. If the value of the warning value (S) is 10, the warning value (S) can only be a multiple of 10; for the same reason, if the value interval is 3, the warning value (S) can only be 3 The value of the multiple.

Referring to the fifth embodiment, in the second preferred embodiment of the present invention, when the torque tool is switched to the operation interface, the embodiment further enables the display unit (14) to have two numerical display positions, except during the display operation. The torque value, that is, the actual locking force (T), also displays the torque warning value (S) for the user to watch. The torque value displayed by the actual locking force (T) is a value below the decimal point.

The invention sets the value of the torque warning value of the warning function of the torsion tool to a non-continuous value, and establishes an operation mode in which the torque warning value is lower than the required locking force, so that the inertia of the force can be avoided to cause actual The locking force is beyond the required locking force.

Furthermore, the user does not have to worry about excessive locking before feeling the warning signal, which makes the operation smoother and reduces the operation time.

The above embodiments are merely illustrative of the technical means of the present invention and are not limiting.

In summary, the present invention is the first structure in the same kind of articles, and has the improvement of practical effects, and is applied according to law.

(10)‧‧‧Electronic torque wrench

(12) ‧‧‧ Subject

(14)‧‧‧Display unit

(15) (16) ‧‧‧ button

(17) ‧ ‧ warning lights

(18)‧‧‧ drive head

(A to A5) ‧‧‧Setting values for torque warning values

(R)‧‧‧Required locking force

(S) ‧ ‧ Torque warning value

(T)‧‧‧Locking force

(△t) ‧ ‧ increase in torque value

The first figure is a perspective view of a first preferred embodiment of the present invention.

The second figure shows a schematic diagram of the numerical setting interval of the torque warning value according to a preferred embodiment of the present invention.

The third figure is an example of use of a preferred embodiment of the present invention.

The fourth figure is another use case of a preferred embodiment of the present invention.

Figure 5 is a partial top plan view of a second preferred embodiment of the present invention.

(12) ‧‧‧ Subject

(14)‧‧‧Display unit

(15) (16) ‧‧‧ button

(17) ‧ ‧ warning lights

(A~A5) ‧‧‧Setting value of torque warning value

Claims (8)

An electronic torque tool with a non-continuous interval of torque warning value includes: a main body; a sensing unit disposed in the main body to sense a torque value of the torque tool; at least one display unit disposed on the main body To display the value; a plurality of buttons are disposed on the body for setting the torque warning value of the torque tool; wherein: the value setting interval of the torque warning value of the torque tool is a set interval of the discontinuous value. The electronic torque tool of claim 1, wherein: the value of the torque warning value is set to be greater than two. The electronic torque tool of claim 1, wherein: the value of the torque warning value is set to 5. The electronic torque tool of claim 1, wherein: the value of the torque warning value is set to 10. The electronic torque tool of claim 1, wherein: the value of the torque warning value is set to 3. The electronic torque tool of claim 1, wherein: the value of the torque warning value is set to 6. The electronic torque tool of claim 1, wherein: the display unit can simultaneously display the torque warning value and the actual locking force in the operation of the torque tool. The electronic torque tool of any one of claims 1 to 7, wherein: the set value of the torque warning value is an integer value.