TWI892876B - Torque wrench apparatus - Google Patents

Abstract

A torque wrench apparatus includes a torque wrench body, a torque wrench head, a microcontroller, and a torque reminder selection circuit. The torque reminder selection circuit is configured to transmit a torque reminder selection signal to the microcontroller. The microcontroller is configured to receive the torque reminder selection signal to provide a torque reminder lower limit value and a torque reminder upper limit value. The torque reminder upper limit value is greater than the torque reminder lower limit value.

Description

Torque wrench device

The present disclosure relates to a wrench device, and in particular to a torque wrench device.

A torque wrench device of related art is used to lock a torqued object. The torque wrench device of related art can be set with a lower torque warning limit value and an upper torque warning limit value. When the torque applied to the torqued object by the torque wrench device of related art is greater than the lower torque warning limit value and less than the upper torque warning limit value, the torque wrench device of related art can emit a warning light or a warning sound to remind the user, which is very convenient.

Although the torque wrench device of the related art is very convenient, it is not easy to set the lower limit value and the upper limit value of the torque prompt, which is a pity.

To solve the above problems, the present disclosure aims to provide a torque wrench device.

To achieve the above-mentioned objectives of the present disclosure, the torque wrench device of the present disclosure includes: a torque wrench body; a torque wrench head, the torque wrench head being detachably assembled to the torque wrench body; a microcontroller, the microcontroller being disposed within the torque wrench body; and a torque prompt selection circuit, the torque prompt selection circuit being electrically connected to the microcontroller, wherein the torque prompt selection circuit is configured to transmit a torque prompt selection signal to the microcontroller; the microcontroller is configured to receive the torque prompt selection signal and provide a torque prompt lower limit value and a torque prompt upper limit value; the torque prompt upper limit value is greater than the torque prompt lower limit value.

Furthermore, in one embodiment of the torque wrench device disclosed above, the torque prompt selection circuit includes: a first torque prompt selection button, the first torque prompt selection button being electrically connected to the microcontroller; and a second torque prompt selection button, the second torque prompt selection button being electrically connected to the microcontroller, wherein, in response to the first torque prompt selection button being pressed, the first torque prompt selection button is configured to transmit a first torque prompt selection signal to the microcontroller, and the microcontroller is configured to receive the first torque prompt selection signal to provide a first torque prompt lower limit value and a first torque prompt upper limit value, and The first torque prompt upper limit value is greater than the first torque prompt lower limit value; wherein, in response to the second torque prompt selection button being pressed, the second torque prompt selection button is configured to transmit a second torque prompt selection signal to the microcontroller, and the microcontroller is configured to receive the second torque prompt selection signal to provide a second torque prompt lower limit value and a second torque prompt upper limit value, and the second torque prompt upper limit value is greater than the second torque prompt lower limit value; wherein the first torque prompt lower limit value and the second torque prompt lower limit value are different from each other; the first torque prompt upper limit value and the second torque prompt upper limit value are different from each other.

Furthermore, in one embodiment of the torque wrench device disclosed above, the torque wrench device is applied to a torqued object, and the torque wrench device further comprises: a torque sensor, the torque sensor being electrically connected to the microcontroller and disposed in the torque wrench body; a torque prompt circuit, the torque prompt circuit being electrically connected to the microcontroller and disposed in the torque wrench body; and a clear button, the clear button being electrically connected to the microcontroller, wherein, in response to the first torque prompt selection button being pressed and the clear button not being pressed: the first torque prompt selection button is configured to transmit the first torque prompt selection signal to the microcontroller; the torque sensor is configured to sense the torque wrench device. A torque is applied to the torqued object to generate a torque sensing signal; the torque sensing signal includes a torque sensing value; after the torque sensor generates the torque sensing signal, the torque sensor is configured to transmit the torque sensing signal to the microcontroller; after the microcontroller receives the first torque prompt selection signal and the torque sensing signal, the microcontroller is configured to compare the torque sensing value with the first torque prompt lower limit value, and the microcontroller is configured to compare the torque sensing value with the first torque prompt upper limit value; in response to the torque sensing value being greater than the first torque prompt lower limit value and less than the first torque prompt upper limit value, the microcontroller is configured to drive the torque prompt circuit to emit a green light.

Furthermore, in one embodiment of the torque wrench device disclosed above, the torque wrench device includes a plurality of torque wrench heads, wherein each of the torque wrench heads has an identification color; the identification colors of the plurality of torque wrench heads are different from each other; the first torque prompt selection button has a first button color; the second torque prompt selection button has a second button color; the first button color of the first torque prompt selection button and the second button color of the second torque prompt selection button are different from each other; the identification color of the torque wrench head assembled to the torque wrench body is the same as the first button color of the first torque prompt selection button, and then the first torque prompt selection button is pressed.

Furthermore, in one embodiment of the torque wrench device disclosed herein, in response to the first torque prompt selection button being pressed and the clear button being pressed for a duration less than a preset time, the first torque prompt selection button is configured to transmit the first torque prompt selection signal to the microcontroller; the clear button is configured to transmit a clear signal to the microcontroller; and after the microcontroller receives the first torque prompt selection signal and the clear signal, the microcontroller is configured to adjust the first torque prompt lower limit value and the first torque prompt upper limit value.

Furthermore, in one embodiment of the torque wrench device disclosed above, the torque indication circuit includes a green LED electrically connected to the microcontroller and disposed within the torque wrench body. In response to the torque sense value being greater than the first torque indication lower limit value and less than the first torque indication upper limit value, the microcontroller is configured to drive the green LED to emit the green light.

Furthermore, in one specific embodiment of the torque wrench device disclosed above, the torque indication circuit further includes: a yellow LED, which is electrically connected to the microcontroller and disposed within the torque wrench body; and a red LED, which is electrically connected to the microcontroller and disposed within the torque wrench body. In response to the torque sensing value being less than or equal to the first torque indication lower limit value, the microcontroller is configured to drive the yellow LED to emit a yellow light; and in response to the torque sensing value being greater than or equal to the first torque indication upper limit value, the microcontroller is configured to drive the red LED to emit a red light.

Furthermore, in one embodiment of the torque wrench device disclosed above, the torque wrench device further includes a buzzer electrically connected to the microcontroller and disposed within the torque wrench body. In response to the torque sense value being greater than the first torque lower limit value and less than the first torque upper limit value, the microcontroller is configured to drive the buzzer to emit a sound.

Furthermore, in one embodiment of the torque wrench device disclosed above, each of the torque wrench heads is engraved with a wrench opening size; the wrench opening sizes of the plurality of torque wrench heads are different from each other; and the wrench opening size is associated with the identification color.

Furthermore, in one specific embodiment of the torque wrench device disclosed above, the torque wrench head is an adjustable wrench head; the torque wrench head has a plurality of identification colors; the identification colors are different from each other; the first torque prompt selection button has a first button color; the second torque prompt selection button has a second button color; the first button color of the first torque prompt selection button and the second button color of the second torque prompt selection button are different from each other; an opening in the torque wrench head is adjusted so that the identification color indicated correspondingly is the same as the first button color of the first torque prompt selection button, and then the first torque prompt selection button is pressed.

The utility of the present disclosure is to simply set the lower and upper torque limit values of a torque wrench.

To further understand the technology, methods, and effects of the present disclosure and to achieve the intended purpose of the present disclosure, please refer to the following detailed description and drawings; in addition, the purpose, characteristics, and features of the present disclosure can be understood more deeply and specifically; however, the drawings are provided for reference and description only and are not intended to limit the scope of the present disclosure.

Numerous specific details are provided in this disclosure to provide a thorough understanding of the embodiments of the present disclosure. However, those skilled in the art will appreciate that the present disclosure may be practiced without one or more of these specific details. In other cases, well-known details are not shown or described to avoid obscuring the characteristics of the present disclosure. The technical content and details of the present disclosure are described below, with accompanying figures for illustration.

Please refer to FIG1 , which is a block diagram of a first embodiment of a torque wrench device 10 of the present disclosure. The torque wrench device 10 of the present disclosure includes a torque wrench body 102, a torque wrench head 104, a microcontroller 106, and a torque prompt selection circuit 108. The torque wrench head 104 is detachably assembled to the torque wrench body 102. The microcontroller 106 is disposed within the torque wrench body 102. The torque prompt selection circuit 108 is electrically connected to the microcontroller 106. The torque prompt selection circuit 108 is configured to transmit a torque prompt selection signal S0 to the microcontroller 106. The microcontroller 106 is configured to receive the torque prompt selection signal S0 to provide a torque prompt lower limit value L0 and a torque prompt upper limit value U0. The torque prompt upper limit value U0 is greater than the torque prompt lower limit value L0.

Please refer to FIG2 , which is a block diagram of a second embodiment of a torque wrench device 10 of the present disclosure. Elements shown in FIG2 are identical to those shown in FIG1 , and for the sake of brevity, their descriptions are not repeated here. Please also refer to FIG3 , which is a schematic diagram of an embodiment of the torque wrench head 104 of FIG2 . The torque wrench device 10 is used to (i.e., to secure) a torqued object 20 (e.g., a nut or a bolt).

The torque wrench device 10 further includes a torque indication circuit 112, a torque sensor 110, a buzzer 130, a clear button 120, and a power switch 114. The torque indication selection circuit 108 includes a first torque indication selection button 136, a second torque indication selection button 138, a third torque indication selection button 140, and a fourth torque indication selection button 142. The torque indication circuit 112 includes a green LED 124, a yellow LED 126, and a red LED 128.

The first torque prompt selection button 136, the second torque prompt selection button 138, the third torque prompt selection button 140, the fourth torque prompt selection button 142, the clear button 120, and the power switch 114 are electrically connected to the microcontroller 106. The torque prompt circuit 112 (i.e., the green LED 124, the yellow LED 126, and the red LED 128), the torque sensor 110, and the buzzer 130 are electrically connected to the microcontroller 106 and disposed within the torque wrench body 102. The torque sensor 110 may be, for example, but the present disclosure is not limited to, a strain gauge.

The torque wrench device 10 includes a plurality of torque wrench heads 104. For example, as shown in FIG2 , the torque wrench device 10 includes four torque wrench heads 104. However, the torque wrench body 102 is only assembled with one torque wrench head 104 at a time, while the remaining three torque wrench heads 104 are placed in a tool box (not shown in FIG2 or FIG3 ). Depending on the user's needs, the user (not shown in FIG2 or FIG3 ) can assemble any of the four torque wrench heads 104 to the torque wrench body 102.

Each of the torque wrench heads 104 has an identification color 1041 (e.g., a color dot is engraved on the torque wrench head 104). The identification colors 1041 of the torque wrench heads 104 are different from each other. For example, in FIG. 2 , the identification colors 1041 of the torque wrench heads 104 are yellow, black, red, and white, from top to bottom. Each of the torque wrench heads 104 is also engraved with a wrench opening size 1042; the multiple wrench opening sizes 1042 of the torque wrench heads 104 are different from each other; the wrench opening size 1042 is associated with the identification color 1041; for example, in FIG. 2 , the wrench opening sizes 1042 engraved on the torque wrench heads 104 from top to bottom are 17, 22, 26, and 29 (representing 17 mm, 22 mm, 26 mm, and 29 mm, respectively).

The first torque prompt selection button 136 has a first button color 1361; the second torque prompt selection button 138 has a second button color 1381; the third torque prompt selection button 140 has a third button color 1401; and the fourth torque prompt selection button 142 has a fourth button color 1421. The first button color 1361, the second button color 1381, the third button color 1401, and the fourth button color 1421 are different from each other. For example, in FIG. 2 , the first button color 1361, the second button color 1381, the third button color 1401, and the fourth button color 1421 are yellow, black, red, and white, respectively.

An embodiment of the method of using the torque wrench device 10 disclosed herein is as follows:

First, the torque wrench heads 104 are placed in the tool box without being connected to the torque wrench body 102. The user visually inspects the object 20 to determine the appropriate torque wrench head 104. For example, if the object 20 has a side-to-side length of approximately 17 mm, the user sees the first torque wrench head 104 from the top in FIG. 2 engraved with the wrench opening size 1042 as 17 (representing 17 mm) and connects the first torque wrench head 104 from the top in FIG. 2 to the torque wrench body 102. As mentioned above, the identification color 1041 of the first torque wrench head 104 from the top in FIG. 2 is yellow.

Next, the user presses the first torque prompt selection button 136, which also has a yellow first button color 1361. That is, the identification color 1041 (yellow) of the torque wrench head 104 attached to the torque wrench body 102 and the first button color 1361 (yellow) of the first torque prompt selection button 136 are identical, and the first torque prompt selection button 136 is then pressed. In response to the first torque prompt selection button 136 being pressed, the first torque prompt selection button 136 is configured to transmit a first torque prompt selection signal S1 to the microcontroller 106.

The microcontroller 106 is then configured to receive the first torque prompt selection signal S1. If the clear button 120 is not pressed, the microcontroller 106 is configured to provide a first torque prompt lower limit value L1 and a first torque prompt upper limit value U1 corresponding to the first torque prompt selection signal S1. The first torque prompt upper limit value U1 is greater than the first torque prompt lower limit value L1. The user then uses the torque wrench device 10 to secure the object 20 being torqued.

During the locking process, the torque sensor 110 is configured to sense a torque 116 applied by the torque wrench device 10 to the torqued object 20 to generate a torque sensing signal 118; the torque sensing signal 118 includes a torque sensing value 1180; after the torque sensor 110 generates the torque sensing signal 118, the torque sensor 110 is configured to transmit the torque sensing signal 118 to the microcontroller 106; after the microcontroller 106 receives the first torque prompt selection signal S1 and the torque sensing signal 118, the microcontroller 106 is configured to compare the torque sensing value 1180 with the first torque prompt lower limit value L1, and the microcontroller 106 is configured to compare the torque sensing value 1180 with the first torque prompt upper limit value U1.

In response to the torque sensing value 1180 being greater than the first torque indication lower limit value L1 and less than the first torque indication upper limit value U1, the microcontroller 106 is configured to drive the green LED 124 to emit a green light 1121, and the microcontroller 106 is configured to drive the buzzer 130 to emit a sound 132. In this way, the user can know that the torque sensing value 1180 is greater than the first torque indication lower limit value L1 and less than the first torque indication upper limit value U1 (indicating that the strength of the torque 116 locking the torqued object 20 is appropriate). At this time, the user can stop applying force.

In response to the torque sensing value 1180 being less than or equal to the first torque prompt lower limit value L1, the microcontroller 106 is configured to drive the yellow LED 126 to emit a yellow light 1122; thereby, the user can know that the torque sensing value 1180 is less than or equal to the first torque prompt lower limit value L1 (indicating that the strength of the torque 116 for locking the torqued object 20 is not strong enough). In response to the torque sensing value 1180 being greater than or equal to the first torque prompt upper limit value U1, the microcontroller 106 is configured to drive the red LED 128 to emit a red light 1123; thereby, the user can know that the torque sensing value 1180 is greater than or equal to the first torque prompt upper limit value U1 (indicating that the strength of the torque 116 locking the torqued object 20 is too strong).

Similarly, if the length of the opposite side of the torqued object 20 is approximately 22 mm, the user assembles the second torque wrench head 104 (with 22 engraved thereon) from the top in FIG. 2 to the torque wrench body 102. As described above, the identification color 1041 of the second torque wrench head 104 from the top in FIG. 2 is black. Then, the user presses the second torque wrench head 104 having the second button color 1381 also in black. The microcontroller 106 further includes a microcontroller 106 configured to receive the second torque prompt selection signal S2 to provide a second torque prompt lower limit value L2 and a second torque prompt upper limit value U2, and the second torque prompt upper limit value U2 is greater than the second torque prompt lower limit value L2.

If the length of the opposite side of the torqued object 20 is approximately 26 mm, the user assembles the third torque wrench head 104 (with 26 engraved thereon) from the top in FIG. 2 to the torque wrench body 102. As described above, the identification color 1041 of the third torque wrench head 104 from the top in FIG. 2 is red. Then, the user presses the third torque prompt option button 1401, which is also red. The third torque prompt selection button 140 is configured to transmit a third torque prompt selection signal S3 to the microcontroller 106, and the microcontroller 106 is configured to receive the third torque prompt selection signal S3 to provide a third torque prompt lower limit value L3 and a third torque prompt upper limit value U3, and the third torque prompt upper limit value U3 is greater than the third torque prompt lower limit value L3.

If the length of the opposite side of the torqued object 20 is approximately 29 mm, the user assembles the fourth torque wrench head 104 (with 29 engraved thereon) from the top in FIG. 2 to the torque wrench body 102. As described above, the identification color 1041 of the fourth torque wrench head 104 from the top in FIG. 2 is white. Then, the user presses the fourth torque prompt option button 1421, which is also white. The fourth torque prompt selection button 142 is configured to transmit a fourth torque prompt selection signal S4 to the microcontroller 106, and the microcontroller 106 is configured to receive the fourth torque prompt selection signal S4 to provide a fourth torque prompt lower limit value L4 and a fourth torque prompt upper limit value U4, and the fourth torque prompt upper limit value U4 is greater than the fourth torque prompt lower limit value L4.

The first torque lower limit value L1, the second torque lower limit value L2, the third torque lower limit value L3, and the fourth torque lower limit value L4 are different from each other, for example, 13 Nm, 37 Nm, 50 Nm, and 60 Nm, respectively. The first torque upper limit value U1, the second torque upper limit value U2, the third torque upper limit value U3, and the fourth torque upper limit value U4 are different from each other, for example, 23 Nm, 47 Nm, 60 Nm, and 70 Nm, respectively.

Furthermore, in response to the first torque prompt selection button 136 being pressed and the clear button 120 not being pressed, the microcontroller 106 is configured to maintain the first torque prompt lower limit value L1 and the first torque prompt upper limit value U1 fixed each time the first torque prompt selection signal S1 is received. In other words, if the first torque prompt selection button 136 is pressed and the clear button 120 is not pressed, the first torque prompt lower limit value L1 and the first torque prompt upper limit value U1 remain fixed regardless of how many times the first torque prompt selection button 136 is pressed.

In the above description, the microcontroller 106 has built-in recommended (optimal) lower and upper torque limit values corresponding to the wrench opening size 1042. For example, for the torque wrench head 104 engraved with the wrench opening size 1042 as 17, the microcontroller 106 provides the first lower torque limit value L1 and the first upper torque limit value U1 as 13 Nm and 23 Nm, respectively. However, the user can also modify these values. The first lower torque limit value L1 and the first upper torque limit value U1 are used as an example and are described as follows:

First, the user presses the first torque prompt selection button 136, causing the first torque prompt selection button 136 to be configured to transmit the first torque prompt selection signal S1 to the microcontroller 106. Next, the user presses the clear button 120, and the clear button 120 is pressed for a duration less than a preset time (a short press; for example, less than 0.5 seconds), causing the clear button 120 to be configured to transmit a clear signal 122 to the microcontroller 106. After the microcontroller 106 receives the first torque prompt selection signal S1 and the clear signal 122, the microcontroller 106 is configured to adjust the first torque prompt lower limit value L1 and the first torque prompt upper limit value U1.

Furthermore, the microcontroller 106 is configured to adjust the first torque prompt lower limit value L1 and the first torque prompt upper limit value U1, including: the microcontroller 106 is configured to first clear the first torque prompt lower limit value L1 and the first torque prompt upper limit value U1, and then the microcontroller 106 is configured to set (for example) according to the number of times the first torque prompt selection signal S1 is received by the microcontroller 106 (that is, the number of times the first torque prompt selection button 136 is pressed). , increase) the first torque lower limit value L1 and the first torque upper limit value U1. Finally, in response to the microcontroller 106 sensing that the duration of pressing the clear button 120 is greater than or equal to the preset time (i.e., the clear button 120 is long pressed), the microcontroller 106 is configured to terminate the adjustment of the first torque lower limit value L1 and the first torque upper limit value U1 and store the first torque lower limit value L1 and the first torque upper limit value U1. During the adjustment process, the user can press (short press) the clear button 120 again to start over.

After the first torque lower limit value L1 and the first torque upper limit value U1 are adjusted, the user can directly use the torque wrench device 10 with the adjusted first torque lower limit value L1 and the first torque upper limit value U1 to lock the torqued object 20 .

Furthermore, the torque wrench device 10 further includes a display 134, which is electrically connected to the microcontroller 106. The microcontroller 106 is configured to drive the display 134 to display the torque sensing value 1180, the first torque prompt lower limit value L1 and the first torque prompt upper limit value U1 (or the second torque prompt lower limit value L2 and the second torque prompt upper limit value U2, or the third torque prompt lower limit value L3 and the third torque prompt upper limit value U3, or the fourth torque prompt lower limit value L4 and the fourth torque prompt upper limit value U4); thereby, the user can know the torque sensing value 1180, the first torque prompt lower limit value L1 and the first torque prompt upper limit value U1 (or the second torque prompt lower limit value L2 and the second torque prompt upper limit value U2, or the third torque prompt lower limit value L3 and the third torque prompt upper limit value U3, or the fourth torque prompt lower limit value L4 and the fourth torque prompt upper limit value U4).

Please refer to FIG4 , which is a block diagram of a third embodiment of the torque wrench device 10 of the present disclosure. The components shown in FIG4 are identical to those shown in FIG2 , and for the sake of brevity, their description will not be repeated here. Please also refer to FIG5 , which is a schematic diagram of an embodiment of the torque wrench head 104 of FIG4 . Unlike FIG2 , FIG4 only includes one torque wrench head 104 , and the torque wrench head 104 of FIG4 is an adjustable wrench head. The torque wrench head 104 has multiple identification colors 1041 , and these identification colors 1041 are different from each other.

An opening 1043 of the torque wrench head 104 is adjusted so that the corresponding identification color 1041 is the same as the first button color 1361 of the first torque prompt selection button 136, and then the first torque prompt selection button 136 is pressed. In other words, the user first adjusts the opening 1043 of the torque wrench head 104 so that the lower jaw 1044 of the torque wrench head 104 corresponds to the identification color 1041, for example, yellow; then, the user presses the first torque prompt selection button 136, which also has the first button color 1361 in yellow.

The utility of the present disclosure is to simply set the lower and upper torque limit values of a torque wrench.

Although the present disclosure has been described with reference to the embodiments thereof, it should be understood that the disclosure is not limited to its details; various substitutions and modifications have been suggested in the foregoing description, and those skilled in the art will think of other substitutions and modifications; therefore, all such substitutions and modifications are intended to be included within the scope of the present disclosure.

10: Torque wrench assembly 20: Torqued object 102: Torque wrench body 104: Torque wrench head 106: Microcontroller 108: Torque indicator selection circuit 110: Torque sensor 112: Torque indicator circuit 114: Power switch 116: Torque 118: Torque sensor signal 120: Clear button 122: Clear signal 124: Green LED 126: Yellow LED 128: Red LED 130: Buzzer 132: Sound 134: Display 136: First torque indicator selection button 138: Second torque indicator selection button 140: Third torque indicator selection button 142: Fourth torque indicator selection button 1041: Identification color 1042: Wrench opening size 1043: Opening 1044: Lower jaw 1121: Green light 1122: Yellow light 1123: Red light 1180: Torque sensor value 1361: First button color 1381: Second button color 1401: Third button color 1421: Fourth button color L0: Torque indicator lower limit value L1: First torque indicator lower limit value L2: Second torque indicator lower limit value L3: Third torque indicator lower limit value L4: Fourth torque indicator lower limit value S0: Torque indicator selection signal S1: First torque indicator selection signal S2: Second torque indicator selection signal S3: Third torque indicator selection signal S4: Fourth torque indicator selection signal U0: Torque indicator upper limit value U1: First torque indicator upper limit value U2: Second torque indicator upper limit value U3: Third torque indicator upper limit value U4: Fourth torque indicator upper limit value

FIG1 is a block diagram of a first embodiment of a torque wrench device according to the present disclosure.

FIG2 is a block diagram of a second embodiment of the torque wrench device disclosed herein.

FIG3 is a schematic diagram of an embodiment of the torque wrench head of FIG2 .

FIG4 is a block diagram of a third embodiment of the torque wrench device disclosed herein.

FIG5 is a schematic diagram of an embodiment of the torque wrench head of FIG4.

10: Torque wrench device

102: Torque wrench body

104: Torque wrench head

106: Microcontroller

108: Torque prompt selection circuit

L0: Torque lower limit value

S0: Torque prompt selection signal

U0: Torque upper limit value

Claims (9)

A torque wrench device is applied to a torqued object, and comprises: a torque wrench body; a torque wrench head, the torque wrench head being detachably assembled to the torque wrench body; a microcontroller, the microcontroller being disposed in the torque wrench body; a torque prompt selection circuit, the torque prompt selection circuit being electrically connected to the microcontroller; a torque sensor, the torque sensor being electrically connected to the microcontroller and disposed in the torque wrench body; a torque prompt circuit, the torque prompt circuit being electrically connected to the microcontroller and disposed in the torque wrench body; and a clear button, the clear button The button is electrically connected to the microcontroller, wherein the torque prompt selection circuit includes a first torque prompt selection button, and the first torque prompt selection button is electrically connected to the microcontroller; wherein the torque prompt selection circuit is configured to transmit a torque prompt selection signal to the microcontroller; the microcontroller is configured to receive the torque prompt selection signal to provide a torque prompt lower limit value and a torque prompt upper limit value; the torque prompt upper limit value is greater than the torque prompt lower limit value; wherein, in response to the first torque prompt selection button being pressed, the first torque prompt selection button is configured to transmit a first torque prompt selection signal. The microcontroller is configured to receive the first torque prompt selection signal to provide a first torque prompt lower limit value and a first torque prompt upper limit value, and the first torque prompt upper limit value is greater than the first torque prompt lower limit value; wherein, in response to the first torque prompt selection button being pressed and the clear button not being pressed: the first torque prompt selection button is configured to transmit the first torque prompt selection signal to the microcontroller; the torque sensor is configured to sense a torque applied by the torque wrench device to the torqued object to generate a torque sensing signal; the torque sensing signal includes a torque sensing value; after the torque sensor generates the torque sensing signal, the torque sensor is configured to transmit the torque sensing signal to the microcontroller; after the microcontroller receives the first torque prompt selection signal and the torque sensing signal, the microcontroller is configured to compare the torque sensing value with the first torque prompt lower limit value, and the microcontroller is configured to compare the torque sensing value with the first torque prompt upper limit value; in response to the torque sensing value being greater than the first torque prompt lower limit value and less than the first torque prompt upper limit value, the microcontroller is configured to drive the torque prompt circuit to emit a green light. A torque wrench device as described in claim 1, wherein the torque prompt selection circuit further includes: a second torque prompt selection button, the second torque prompt selection button is electrically connected to the microcontroller, wherein, in response to the second torque prompt selection button being pressed, the second torque prompt selection button is configured to transmit a second torque prompt selection signal to the microcontroller, and the microcontroller is configured to receive the second torque prompt selection signal to provide a second torque prompt lower limit value and a second torque prompt upper limit value, and the second torque prompt upper limit value is greater than the second torque prompt lower limit value; wherein the first torque prompt lower limit value and the second torque prompt lower limit value are different from each other; the first torque prompt upper limit value and the second torque prompt upper limit value are different from each other. The torque wrench device as described in claim 2 comprises a plurality of torque wrench heads, wherein each of the torque wrench heads has an identification color; the plurality of identification colors of the torque wrench heads are different from each other; the first torque prompt selection button has a first button color; the second torque prompt selection button has a second button color; the first button color of the first torque prompt selection button and the second button color of the second torque prompt selection button are different from each other; the identification color of the torque wrench head assembled to the torque wrench body is the same as the first button color of the first torque prompt selection button, and then the first torque prompt selection button is pressed. A torque wrench device as described in claim 3, wherein, in response to the first torque prompt selection button being pressed and the clear button being pressed for a duration less than a preset time: the first torque prompt selection button is configured to transmit the first torque prompt selection signal to the microcontroller; the clear button is configured to transmit a clear signal to the microcontroller; after the microcontroller receives the first torque prompt selection signal and the clear signal, the microcontroller is configured to adjust the first torque prompt lower limit value and the first torque prompt upper limit value. A torque wrench device as described in claim 4, wherein the torque prompt circuit includes: a green LED, which is electrically connected to the microcontroller and disposed in the torque wrench body, wherein, in response to the torque sensing value being greater than the first torque prompt lower limit value and less than the first torque prompt upper limit value, the microcontroller is configured to drive the green LED to emit the green light. A torque wrench device as described in claim 5, wherein the torque prompt circuit further includes: a yellow LED, which is electrically connected to the microcontroller and disposed in the torque wrench body; and a red LED, which is electrically connected to the microcontroller and disposed in the torque wrench body, wherein, in response to the torque sensing value being less than or equal to the first torque prompt lower limit value, the microcontroller is configured to drive the yellow LED to emit a yellow light; and in response to the torque sensing value being greater than or equal to the first torque prompt upper limit value, the microcontroller is configured to drive the red LED to emit a red light. The torque wrench device as described in claim 6 further includes: a buzzer, which is electrically connected to the microcontroller and disposed in the torque wrench body, wherein, in response to the torque sensing value being greater than the first torque prompt lower limit value and less than the first torque prompt upper limit value, the microcontroller is configured to drive the buzzer to emit a sound. A torque wrench device as described in claim 7, wherein each of the torque wrench heads is engraved with a wrench opening size; the wrench opening sizes of the multiple torque wrench heads are different from each other; and the wrench opening size is associated with the identification color. A torque wrench device as described in claim 2, wherein the torque wrench head is an adjustable wrench head; the torque wrench head has a plurality of identification colors; the identification colors are different from each other; the first torque prompt selection button has a first button color; the second torque prompt selection button has a second button color; the first button color of the first torque prompt selection button and the second button color of the second torque prompt selection button are different from each other; an opening in the torque wrench head is adjusted to correspondingly indicate that the identification color is the same as the first button color of the first torque prompt selection button, and then the first torque prompt selection button is pressed.