JP2022106433A - Torque wrench, program for torque wrench, and notification method of torque wrench - Google Patents

Abstract

To suppress a power consumption while making possible to view light from a light source in any use mode of a torque wrench in fastening work.SOLUTION: There is provided a torque wrench 100 that comprises a head 10, a handle part 20 provided with the head at the tip thereof, a plurality of light sources 41 which are provided at a plurality of places of the handle part, and emit light in different directions when viewed from an axial direction of the handle part, and a light emission control part C which makes the light sources emit the light when fastening torque of a fastened object satisfies a predetermined standard, wherein the light emission control part makes the light sources emit the light according to a use mode of the torque wrench in fastening work.SELECTED DRAWING: Figure 2

Description

The present invention relates to a torque wrench.

As a conventional torque wrench, as shown in Patent Document 1, there is a torque wrench that notifies by light emission of an LED that the tightening torque to be tightened has reached a predetermined range. Specifically, this torque wrench has a configuration in which an LED is provided at one location on the handle.

With such a configuration, the torque wrench may be used, for example, with the surface of the head facing the tightening target side (hereinafter, also referred to as the head surface) facing downward, or with the head surface facing sideways. Therefore, the light from the LED cannot be seen depending on the usage mode.

JP 2011-56643

Therefore, the applicant has developed an LED that can visually recognize the light emitted from at least one LED regardless of the usage mode by providing LEDs at a plurality of locations in the circumferential direction of the handle.

However, in such a configuration, since a plurality of LEDs are used, there is a problem that the power consumption is larger than that in the configuration using one LED.

Therefore, the main object of the present invention is to suppress power consumption while making it possible to visually recognize the light from at least one light source regardless of how the torque wrench is used during the tightening operation.

The torque wrench according to the present invention is provided at a head, a handle portion provided with the head at the tip portion, and a plurality of positions of the handle portion, and emits light in different directions when viewed from the axial direction of the handle portion. A torque wrench including a plurality of light sources to be tightened and a light emission control unit that emits light when the tightening torque of the tightening target satisfies a predetermined standard, and the light emission control unit is used during tightening work. The torque wrench is configured to emit light according to the usage mode of the torque wrench.

With such a configuration, the torque wrench can be used by setting the light source according to the usage mode of the torque wrench among the plurality of light sources to, for example, one that emits light that can be seen in the usage mode. Regardless, you will be able to see the light from at least one light source. Moreover, power consumption can be suppressed by, for example, not emitting light from a light source other than the light source according to the usage mode of the torque wrench, or by reducing the amount of light.

In order to reduce power consumption as much as possible, it is preferable that the light emission control unit does not emit light sources other than the light source according to the usage mode of the torque wrench.

Based on the usage mode information receiving unit that receives the usage mode information that is information on the usage mode of the torque wrench during the tightening operation, and the usage mode information received by the usage mode information receiving unit. A light source determining unit that determines a light source to emit light from the plurality of light sources, and a light source determined by the light source determining unit when the tightening torque of the tightening target satisfies a predetermined standard during the tightening operation. It is preferable to have a light source light emitting unit for emitting light.
With such a configuration, it is possible to emit a light source according to the usage mode of the torque wrench without significantly changing the circuit configuration of the light emission control unit from the conventional one.

The usage mode of the torque wrench can be classified into a plurality of types mainly according to the posture and altitude of the torque wrench.
Therefore, it is preferable that the usage mode information includes either one or both of the posture of the torque wrench and the altitude of the torque wrench at the time of tightening work.

As a specific configuration for determining the light source to emit light, the light source determination unit stores the light source determination data corresponding to the usage mode of the torque wrench indicated by the usage mode information and the light source to emit light. A configuration may be mentioned in which a light source determination unit is further provided, and the light source determination unit determines a light source to emit light based on the usage mode information and the light source determination data.

As a more specific configuration, one or both of the gyro sensor and the altitude sensor are further provided, and the usage mode information is the attitude data indicating the posture of the torque wrench detected by the gyro sensor or the attitude data detected by the altitude sensor. A configuration including one or both of the altitude data indicating the altitude of the torque wrench can be mentioned.

In an actual field, the head surface is often used with the head surface facing up and down or front and left and right. Then, when the case where the head surface is used with the head surface facing up and down and the case where the head surface is used with the head surface facing the front left and right are compared, the portion of the handle portion visible to the operator changes by about 90 degrees.

Therefore, in order to make the light from at least one light source visible regardless of the usage mode of the torque wrench,
It is preferable that the plurality of light sources are arranged so as to be visible from directions orthogonal to each other when viewed from the axial direction of the handle portion.

It is preferable that the plurality of light sources are provided along the circumferential direction of the handle portion, are provided on the peripheral surface of the handle portion, and further include a ring-shaped light guide body that covers the light sources.

With such a configuration, the light from the light source is guided in the circumferential direction of the handle by the light guide, so that the light from the light source can be seen from a wider angle around the handle as compared with the case without the light guide. Will be visible. As a result, even if the number of light sources is reduced, the light from the light sources can be visually recognized. Therefore, the manufacturing cost can be suppressed.

The program for a torque wrench according to the present invention is provided at a head, a handle portion in which the head is provided at a tip portion, and a plurality of positions of the handle portion, and lights in different directions when viewed from the axial direction of the handle portion. This is a program used for a torque wrench equipped with a plurality of light sources that emit light and a light emission control unit that emits light when the tightening torque of the tightening target meets a predetermined standard. Based on the usage mode information receiving unit that receives the usage mode information which is the information regarding the orientation of the head in the above and the usage mode information received by the usage mode information receiving unit, the light source to emit light is determined among the plurality of light sources. It is characterized in that the computer functions as a light source light emitting unit that emits a light source determined by the light source determining unit when the tightening torque of the light source determining unit and the tightening target satisfy a predetermined standard. It is a thing.

The torque wrench notification method according to the present invention includes a head, a handle portion in which the head is provided at the tip portion, and a plurality of positions of the handle portion, and the heads are provided in a plurality of positions in different directions when viewed from the axial direction of the handle portion. It is a notification method of a torque wrench equipped with multiple light sources that emit light, and the step of determining whether or not the tightening torque of the tightening target meets a predetermined standard and the tightening torque of the tightening target are It is characterized by including a step of emitting a light source according to the usage mode of the torque wrench at the time of tightening work when a predetermined standard is satisfied.

According to the torque wrench configured as described above, power consumption can be suppressed while making it possible to visually recognize the light from at least one light source regardless of how the torque wrench is used during the tightening operation.

It is a perspective view which shows typically the structure of the torque wrench in this embodiment. It is sectional drawing which shows typically the structure of the torque wrench of the same embodiment. It is sectional drawing which shows typically the structure of the light emitting part of the same embodiment. It is a schematic diagram which shows the usage mode of the torque wrench of the same embodiment. It is a functional block diagram which shows the function of the light emission control part of the same embodiment. It is a flowchart which shows the operation of the light emission control part of the same embodiment.

An embodiment of the torque wrench 100 according to the present invention will be described below.

As shown in FIGS. 1 and 2, the torque wrench 100 according to the present embodiment tightens, for example, bolts, nuts, screws, and the like by rotating them in a predetermined tightening direction. Specifically, the torque wrench 100 includes a head 10, a handle portion 20, a torque sensor TS, and a notification mechanism 30.

The head 10 is engaged with the tightening target. In the present embodiment, the square drive 11 is provided on the surface of the head 10 facing the tightening target side (hereinafter referred to as the head surface 10s) during the tightening operation. That is, in the present embodiment, the surface on which the square drive 11 is provided is the head surface 10s. However, the torque wrench 100 may not include the square drive 11 and the head 10 may be directly engaged with the tightening target.

The handle portion 20 has a long shape, and a head 10 is provided at the tip thereof. Specifically, the handle portion 20 includes a grip portion 21 provided on the hand side, a shaft portion 22 interposed between the grip portion 21 and the head 10, and a casing 23 covering the shaft portion 22. There is. A display D is provided on the outer surface of the casing 23 along the outer surface, and electronic devices and their wirings are housed inside the display D.

The torque sensor TS detects the tightening torque of the tightening target. Specifically, the torque sensor TS includes a strain gauge provided on the shaft portion 22, and is configured to detect the tightening torque based on the strain amount of the strain gauge. The tightening torque detected by the torque sensor TS is displayed on the display D.

The notification mechanism 30 notifies when the tightening torque detected by the torque sensor TS satisfies a predetermined standard, and specifically controls the light emitting unit 40 and the light emitting unit 40. It is provided with a light emission control unit C.

As shown in FIGS. 2 and 3, the light emitting unit 40 is provided at, for example, the tip end portion of the casing 23, and includes a plurality of light sources 41 provided along the circumferential direction of the handle portion 20.

The plurality of light sources 41 are regularly arranged, for example, along the circumferential direction of the handle portion 20, and are arranged at equal intervals here. However, these light sources 41 may be arranged irregularly or may not be arranged at equal intervals.

As shown in FIG. 3, the light emitting unit 40 of the present embodiment further includes a light guide body 42 that covers a plurality of light sources 41. The light guide body 42 has a ring shape, and guides the light emitted from the light source 41 in the circumferential direction of the handle portion 20 while diffusing the light.

Here, the usage mode of the torque wrench 100 changes depending on, for example, the arrangement of the tightening target and the direction of the rotating shaft. Specifically, as shown in FIG. 4, it can be classified into the following six usage modes (usage mode A to usage mode F) (see Table 1). Hereinafter, these usage modes will be described in detail.

[Usage A]
The usage mode A is a usage mode in which the tightening target is below the eye level of the operator and the rotation axis thereof faces in the vertical direction. The torque wrench 100 in the usage mode A is used in a posture in which the head surface 10s faces downward (vertical direction) and is lower than the eye level of the operator.

[Usage B]
The usage mode B is a usage mode in which the tightening target is below the eye level of the operator and the rotation axis thereof faces the front-rear direction. The torque wrench 100 in the usage mode B is used in a posture in which the head surface 10s faces forward (horizontally) and is below the eye level of the operator.

[Usage mode C]
The usage mode C is a usage mode in which the tightening target is below the eye level of the operator and the rotation axis thereof faces the left-right direction. The torque wrench 100 in the usage mode C is used in a posture in which the head surface 10s faces left and right (horizontal direction) and is below the eye level of the operator.

[Usage D]
The usage mode D is a usage mode in which the tightening target is above the eye level of the operator and the rotation axis thereof faces in the vertical direction. The torque wrench 100 in the usage mode D is used in a posture in which the head surface 10s faces upward (vertically) and is above the eye level of the operator.

[Usage mode E]
The usage mode E is a usage mode in which the tightening target is above the eye level of the operator and the rotation axis thereof faces the front-rear direction. The torque wrench 100 in the usage mode E is used in a posture in which the head surface 10s faces forward (horizontally) and is above the eye level of the operator.

[Usage mode F]
The usage mode F is a usage mode in which the tightening target is above the eye level of the operator and the rotation axis thereof faces the left-right direction. The torque wrench 100 in the usage mode F is used in a posture in which the head surface 10s faces left and right (horizontal direction) and is above the eye level of the operator.

In these usage modes A to F, the portion in front of the handle portion 20 changes. Therefore, the torque wrench 100 is configured so that the operator can visually recognize the light from any of the light sources regardless of the usage mode. Specifically, in the usage modes A and E and the usage modes B, C, D and F, the portion in front of the handle portion 20 changes by about 90 degrees. Therefore, it is preferable that the plurality of light sources 41 are arranged so that they can be visually recognized from the directions orthogonal to each other when viewed from the axial direction of the handle portion 20 (the direction orthogonal to the paper surface in FIG. 3). Further, if the angle formed by the light emission directions of the light sources 41 adjacent to each other greatly deviates from 90 degrees, the light source 41 may not be visible in any of the usage modes. Therefore, the angle formed by the light emission direction of these light sources 41 is preferably around 90 degrees, and more specifically, 80 degrees or more and 100 degrees or less.

The light emitting unit 40 of the present embodiment includes four light sources 41. The four light sources 41 are arranged so that the angles formed by the light emission directions of the light sources 41 adjacent to each other are 90 degrees.

More specifically, the light from these four light sources 41 is directed in the direction α (specifically, the engaging direction) in which the head surface 10s faces, and the opposite direction β (specifically, the anti-engaging direction). , One direction X (specifically, the tightening direction) orthogonal to these directions, and the other direction Y (specifically, the anti-tightening direction) are arranged so as to be visible. That is, these four light sources 41 are arranged at positions facing the direction α, the direction β, the direction X, and the direction Y on the outer surface of the handle portion 20, respectively.

The light emitting control unit C causes the light emitting unit 40 to emit light when the tightening torque detected by the torque sensor TS satisfies a predetermined standard. Physically, the CPU, memory, AD converter, etc. are used. It is prepared.

As shown in FIG. 5, the light emission control unit C cooperates with the CPU and its peripheral devices according to the program stored in the memory described above, so that the usage mode information receiving unit C1 and the usage mode determining unit C2 , The data storage unit C3 for determining the light source, the light source determination unit C4, the threshold storage unit C5, and the light emitting unit C6 are configured to exert their functions.

Hereinafter, the operation of the light emission control unit C will be described with reference to the flowchart of FIG. 6 while also explaining the functions of each unit.

First, the usage mode information receiving unit C1 receives usage mode information which is information on the usage mode of the torque wrench 100 at the time of tightening work (S1).

Here, the usage mode information may be information indicating the usage mode of the torque wrench 100 itself, or may be information necessary for determining the usage mode of the torque wrench 100.

The usage mode information receiving unit C1 of the present embodiment receives information used for determining whether the usage mode is any of the above-mentioned usage modes A to F. Specifically, the torque wrench 100 The attitude data indicating the attitude (specifically, the orientation of the head surface 10s) and the altitude data indicating the altitude of the torque wrench 100 detected by the altitude sensor AS are received as usage mode information.

More specifically, as shown in FIG. 2, the torque wrench 100 of the present embodiment further includes a gyro sensor GS and an altitude sensor AS, and the usage mode information receiving unit C1 is detected by the gyro sensor GS. The attitude data indicating the attitude of the torque wrench 100 and the altitude data indicating the altitude of the torque wrench 100 detected by the altitude sensor AS are received as usage mode information.

As an example of the gyro sensor GS, for example, one that detects the subsequent posture of the torque wrench 100 activated in a predetermined posture based on the change in the angular velocity can be mentioned. The torque wrench 100 of the present embodiment functions as a rotation angle calculation unit (not shown) that calculates the tightening rotation angle of the torque wrench 100 during tightening work based on the angular velocity detected by the gyro sensor GS. It is provided and contributes to the so-called rotation angle method in which screw fastening is controlled by the tightening rotation angle. That is, the gyro sensor GS of the present embodiment is used for both detecting the posture of the torque wrench 100 and detecting the tightening rotation angle of the torque wrench 100 as described above.
Further, as an example of the altitude sensor AS, for example, one that detects the altitude of the torque wrench 100 based on atmospheric pressure can be mentioned.

Next, the usage mode determination unit C2 determines the usage mode of the torque wrench 100 based on the usage mode information received by the usage mode information receiving unit C1.
The usage mode determination unit C2 of the present embodiment determines the height and / or posture of the torque wrench 100 at the time of tightening work based on the usage mode information.

As a specific aspect of determining the height, the above-mentioned altitude data is compared with a predetermined reference altitude data, and for example, the torque wrench 100 is used at a position higher than or lower than the height of the operator's eyes. It can be mentioned to determine whether it is used in position. The reference height data in this case may be set, for example, at the height of the operator's eyes during the tightening operation, and may be stored in a predetermined area of the memory.

Further, as a specific mode for determining the posture, it can be mentioned that the torque wrench 100 determines in which direction the head surface 10s is directed from the above-mentioned posture data.

Then, the usage mode determination unit C2 of the present embodiment determines which of the usage modes A to F the torque wrench 100 is used in, based on the determination of the height and the posture.

The light source determination data storage unit C3 is set in a predetermined area of the memory, and has a usage mode indicated by a plurality of usage mode information classified in advance as described above, and a light source 41 (which emits light according to each usage mode). Hereinafter, data for determining a light source indicating a relationship with the light source to be emitted (also referred to as a light source 41) is stored. The light source determination data storage unit C3 can input light source determination data via an input means to add / modify data.

The light source determination data may be data in which the usage mode and one light source light source 41 are linked, or may be data in which the usage mode and a plurality of light source light sources 41 are linked. When the torque wrench 100 is used in the usage mode, the light source 41 can be visually recognized by the operator from the periphery of the handle 20. Specifically, the light emitting target light source 41 in the usage modes A and E and the light emitting target light source 41 in the usage modes B, C, D, and F are orthogonal to each other when viewed from the axial direction of the handle portion 20. Something that can be seen from the direction of the light source is set. In the present embodiment, as the light source for light emission 41 corresponding to the usage modes A and E, as shown in FIG. 4A, the light source (first light source) 41 that can be visually recognized from the anti-engagement direction β of the handle portion 20 and One or both of the light sources (second light sources) 41 that can be visually recognized from the tightening direction X are set, and the light sources 41 that emit light in the cases of usage B, C, D, and F include FIGS. 4 (a) and 4 (b). ), One or both of the light source (first light source) 41 visible from the anti-engagement direction β and the light source (third light source) 41 visible from the anti-tightening direction Y are set.

Next, the light source determining unit C4 determines the light source to be emitted 41 among the plurality of light sources 41 provided in the light emitting unit 40 based on the usage mode of the torque wrench 100 determined by the usage mode determining unit C2 (S2). ..
The light source determination unit C4 of the present embodiment is based on the usage mode of the torque wrench determined by the usage mode determination unit C2 and the light source determination data stored in the light source determination data storage unit C3. Is configured to determine.

The threshold value storage unit C5 is set in a predetermined area of the memory and stores the threshold value of the tightening torque. The threshold value storage unit C5 can be added / corrected by inputting a threshold value via an input means.
The threshold value storage unit C5 stores at least an acceptable lower limit value of the tightening torque as a threshold value. Here, the target value of the tightening torque is also stored as a threshold value.

The light source light source unit C6 causes the light source light source 41 determined by the light source determination unit C4 to emit light when the tightening torque of the tightening target satisfies a predetermined standard. The light source light emitting unit C6 here does not emit light from a light source 41 other than the light source to be emitted 41, but may emit light by reducing the amount of light from the light source 41 other than the light source to be emitted 41.
The light source light emitting unit C6 of the present embodiment is configured to emit light of the light source target light source 41 when the tightening torque exceeds the threshold value stored in the threshold value storage unit C5. Specifically, it is configured to change the light emitting mode of the light emitting target light source 41 depending on whether the tightening torque exceeds the lower limit value or the target value.
More specifically, the light source light emitting unit C6 acquires the tightening torque detected by the torque sensor TS (S3). Subsequently, it is determined whether or not the tightening torque exceeds the target value (S4). Then, when it is determined that the tightening torque exceeds the target value, the light source for light emission 41 is made to emit light, for example, red (S5). On the other hand, if it is determined that the tightening torque does not exceed the target value, it is subsequently determined whether or not the tightening torque exceeds the lower limit value (S6). Then, when it is determined that the tightening torque exceeds the lower limit value, the light source for light emission 41 is made to emit light, for example, green. On the other hand, if it is determined that the tightening torque does not exceed the lower limit value, the tightening torque is acquired from the torque sensor TS again. As the light emitting mode of the light emitting target light source 41, for example, it may be switched between lighting and blinking, the blinking speed may be changed, or these light emitting modes may be combined and changed.

According to the torque wrench 100 configured in this way, the light source 41 that is visible to the operator among the light sources 41 provided at the plurality of locations of the handle portion 20 is made to emit light according to the usage mode of the torque wrench 100. Regardless of how the torque wrench 100 is used, the light emitted from the light source 41 can be visually recognized. Moreover, since the light sources 41 other than the light source to be emitted 41 according to the usage mode of the torque wrench 100 are not emitted, the power consumption can be suppressed.

Further, since the light emitting directions of the four light sources 41 are shifted by 90 degrees from each other when viewed from the axial direction of the handle portion 20, no matter what direction the head 10 is oriented, any of the light sources 41 can be used. You can see the light emission.

Further, since the plurality of light sources 41 are covered with the ring-shaped light guide plate 42, the light of the light source can be visually recognized from a wider angle around the handle portion 20 as compared with the case where the light guide body 42 is not provided. As a result, even if the number of light sources 41 is reduced, the light from the light sources 41 can be visually recognized, and the manufacturing cost can be further suppressed.

The present invention is not limited to the above embodiment.

For example, in the above-described embodiment, the usage mode information receiving unit receives usage mode information from each sensor provided on the torque wrench, but usage mode information is received from each sensor or the like provided outside the torque wrench. May be accepted. In this case, for example, an information processing device that is wirelessly or wiredly connected to the torque wrench and a camera that captures the torque wrench during tightening work are further provided, and the torque wrench is obtained from the image data captured by the camera by the information processing device. The attitude data indicating the attitude and the altitude data indicating the altitude of the torque wrench may be specified, and these data may be configured to be transmitted to the usage mode information receiving unit. Further, the information processing device may be provided with a function as a usage mode determination unit, and the usage mode data acquired by the usage mode determination unit may be transmitted from the information processing device to the usage mode information receiving unit as usage mode information. good. In this case, the torque wrench does not need to have a function as a usage mode determination unit.

Further, the light emission control unit may be configured by using a circuit in which the circuit configuration is switched when the direction of the head surface is changed, for example, in order to switch the light source to emit light according to the usage mode of the torque wrench. Examples of such a circuit include a switch that can be switched by an operator according to the usage mode, and a switch that switches by operating a weight or the like according to the orientation of the head surface. ..

The data for determining the light source may be, for example, data that can be corrected for each tightening operation. As a result, the operator can freely set and change the light source that can be visually recognized in the tightening work as a light source that emits light for each tightening work.

In the above embodiment, the light emitting unit includes a light guide body, but the light guide body does not necessarily have to be provided.

Further, if the torque wrench is a monkey wrench type or a head replacement type that can be used upside down, the light source (fourth light source) that can be visually recognized from the engagement direction α in the above embodiment emits light. It may be set as a target light source.

In addition, the present invention is not limited to each of the above-described embodiments, and it goes without saying that various modifications can be made without departing from the spirit of the present invention.

100 Torque wrench 10 Head 20 Handle 30 Notification mechanism 40 Light source 41 Light source TS Torque sensor C Light emission control unit C1 Usage information reception unit C2 Usage determination unit C3 Light source determination data storage unit C4 Light source determination unit C5 Threshold storage unit C6 Light source light emitting part

Claims (10)

Tightening with a head, a handle portion having the head provided at the tip portion, and a plurality of light sources provided at a plurality of positions of the handle portion and emitting light in different directions when viewed from the axial direction of the handle portion. A torque wrench provided with a light emission control unit that emits light when the target tightening torque meets a predetermined standard.
A torque wrench characterized in that the light emission control unit is configured to emit light from a light source according to the usage mode of the torque wrench during tightening work. The torque wrench according to claim 1, wherein the light emission control unit does not emit a light source other than a light source according to the usage mode of the torque wrench. The light emission control unit is configured to emit light according to either one or both of the posture of the torque wrench and the altitude of the torque wrench at the time of tightening work, according to any one of claims 1 or 2. Described torque wrench. The light emission control unit
A usage mode information receiving unit that receives usage mode information that is information on the usage mode of the torque wrench during the tightening operation, and a usage mode information receiving unit.
A light source determining unit that determines a light source to emit light from the plurality of light sources based on the usage mode information received by the usage mode information receiving unit.
Any one of claims 1 to 3 including a light source light emitting unit that emits a light source determined by the light source determining unit when the tightening torque of the tightening target satisfies a predetermined standard during the tightening operation. Torque wrench described in. The light emission control unit further includes a light source determination data storage unit that stores light source determination data indicating the relationship between the usage mode of the torque wrench and a light source that emits light according to the usage mode of the torque wrench.
The torque wrench according to claim 4, wherein the light source determining unit determines a light source to emit light by comparing the usage mode information with the light source determining data. Further provided with either or both of the gyro sensor and the altitude sensor provided on the handle portion,
Claim 4 or 5 in which the usage mode information includes either or both of attitude data indicating the attitude of the torque wrench detected by the gyro sensor and altitude data indicating the altitude of the torque wrench detected by the altitude sensor. The torque wrench described in any of. The torque wrench according to any one of claims 1 to 6, wherein the plurality of light sources are arranged so as to be visible from directions orthogonal to each other when viewed from the axial direction of the handle portion. The plurality of light sources are provided along the circumferential direction of the handle portion.
The torque wrench according to any one of claims 1 to 7, further comprising a ring-shaped light guide body provided on the peripheral surface of the handle portion and provided so as to cover the light sources. Tightening with a head, a handle portion on which the head is provided at the tip portion, and a plurality of light sources provided at a plurality of positions of the handle portion and emitting light in different directions when viewed from the axial direction of the handle portion. A program used for a torque wrench equipped with a light emission control unit that emits light when the target tightening torque meets a predetermined standard.
A usage mode information receiving unit that receives usage mode information that is information on the usage mode of the torque wrench during tightening work, and a usage mode information receiving unit.
A light source determining unit that determines a light source to emit light from the plurality of light sources based on the usage mode information received by the usage mode information receiving unit.
A program for a torque wrench, characterized in that a computer functions as a light source light emitting unit that emits a light source determined by the light source determining unit when the tightening torque of the tightening target satisfies a predetermined standard. A head, a handle portion on which the head is provided at a tip portion, and a plurality of light sources provided at a plurality of positions of the handle portion and emitting light in different directions when viewed from the axial direction of the handle portion are provided. This is a torque wrench notification method.
Steps to determine whether the tightening torque to be tightened meets the specified criteria, and
A method for notifying a torque wrench, which comprises a step of emitting a light source according to a usage mode of the torque wrench at the time of tightening work when the tightening torque of the tightening target satisfies a predetermined standard.

Images