Torque Warning Hand Tool

• US 20130249700A1
• Filed: 06/25/2012
• Published: 09/26/2013
• Est. Priority Date: 03/21/2012
• Status: Active Grant

• Current Assignee: Kabo Tool Company
• Original Assignee: Kabo Tool Company
• Inventors: HSIEH, Chih-Ching
• Granted Patent: US 9,000,936 B2
• Time in Patent Office: Days
• US Class Current: 340/665
• CPC Class Codes: B25B 23/1425 by electrical means

Abstract

A torque warning hand tool includes a main body with one drive head, and a torque detector, a control display device and a warning unit disposed on the main body and electrically connected to each other. The control display device is used to set a preset value and receive a torque value from the torque detector to compare the torque value with the preset value. The warning unit has a first, a second and a third warning modes respectively corresponding to three colored light sources. After compared, according to the warning mode in which the torque value falls, the control display device drives the different colored light sources to emit corresponding colors for an operator to identify the torque extent applied to the hand tool.

Claims

1. A torque warning hand tool comprising:

a main body, a drive head being disposed at at least one end of the main body for tightening a work piece;

a torque detector disposed on the main body;

a control display device disposed on the main body; and

a warning unit disposed on the main body;

the torque detector, the control display device and the warning unit being electrically connected to each other;

the torque detector serving to detect the bending strain of the main body and output a torque value;

the control display device being used to set a preset value and receive the torque value of the torque detector, the control display device including an operation unit for comparing the torque value with the preset value;

the warning unit having a first warning mode, a second warning mode, a third warning mode, and three colored light sources with different colors corresponding to the warning modes respectively;

the colored light sources serving to emit corresponding colors of light according to different warning modes, after the control display device compares the torque value with the preset value, the control display device driving the corresponding warning mode of the warning unit according to the warning mode range in which the torque value falls;

wherein the first, second and third warning modes are respectively defined as the ranges of 96%˜

99%, 99%˜

104% and 104%˜

110% of the preset value.

4. The torque warning hand tool as claimed in claim 1, wherein the colored light sources corresponding to the respective warning modes of the warning unit flicker to emit light.

5. The torque warning hand tool as claimed in claim 4, wherein the flickering frequencies of the colored light sources corresponding to the respective warning modes of the warning unit are progressively increased.

8. The torque warning hand tool as claimed in claim 1, wherein the colored light sources corresponding to the three warning modes of the warning unit continuously emit light.

10. The torque warning hand tool as claimed in claim 1, wherein the warning unit further has a sound-emitting element, the sound-emitting element having different sound intensities and/or intermittence frequencies corresponding to the warning modes of the warning unit respectively.

11. The torque warning hand tool as claimed in claim 10, wherein in the same warning mode and/or different warning modes, the sound intensity of the sound-emitting element is progressively increased and/or the intermittence frequency of the sound-emitting element is progressively increased.

12. The torque warning hand tool as claimed in claim 10, wherein in the third warning mode of the warning unit, the sound-emitting element continuously emits sound.

2. A torque warning hand tool comprising:

a main body, a drive head being disposed at at least one end of the main body for tightening a work piece;

a torque detector disposed on the main body;

a control display device disposed on the main body; and

a warning unit disposed on the main body;

the torque detector, the control display device and the warning unit being electrically connected to each other;

the torque detector serving to detect the bending strain of the main body and output a torque value;

the control display device being used to set a preset value and receive the torque value of the torque detector, the control display device including an operation unit for comparing the torque value with the preset value, the warning unit having a first warning mode, a second warning mode, a third warning mode, a critical mode, and three colored light sources with different colors corresponding to the warning modes respectively, the colored light sources serving to emit corresponding colors of light according to different warning modes, the critical mode being not corresponding to any colored light sources so that none of the colored light sources will emit light in the critical mode;

after the control display device compares the torque value with the preset value, the control display device driving the corresponding mode of the warning unit according to the mode range in which the torque value falls;

wherein the first, second and third warning modes are respectively defined as the ranges of 96%˜

99%, 99%˜

104% and 104%˜

110% of the preset value, while the critical mode falls in the second warning mode.

3. The torque warning hand tool as claimed in claim 2, wherein the critical mode is defined as a range of 99.5%˜

100.5% of the preset value.

6. The torque warning hand tool as claimed in claim 2, wherein the colored light sources corresponding to the respective warning modes of the warning unit flicker to emit light.

7. The torque warning hand tool as claimed in claim 6, wherein the flickering frequencies of the colored light sources corresponding to the respective warning modes of the warning unit are progressively increased.

9. The torque warning hand tool as claimed in claim 2, wherein the colored light sources corresponding to the three warning modes of the warning unit continuously emit light.

13. The torque warning hand tool as claimed in claim 2, wherein the warning unit further has a sound-emitting element, the sound-emitting element having different sound intensities and/or intermittence frequencies corresponding to the warning modes of the warning unit respectively.

14. The torque warning hand tool as claimed in claim 13, wherein in the same warning mode and/or different warning modes, the sound intensity of the sound-emitting element is progressively increased and/or the intermittence frequency of the sound-emitting element is progressively increased.

15. The torque warning hand tool as claimed in claim 14, wherein in the third warning mode of the warning unit, the sound-emitting element continuously emits sound.

16. The torque warning hand tool as claimed in claim 2, wherein the warning unit further has a sound-emitting element, the sound-emitting element having different sound intensities and/or intermittence frequencies corresponding to the warning modes of the warning unit respectively, the critical mode being not corresponding to the sound-emitting element so that the sound-emitting element will not emit sound in the critical mode.

17. The torque warning hand tool as claimed in claim 3, wherein the warning unit further has a sound-emitting element, the sound-emitting element having different sound intensities and/or intermittence frequencies corresponding to the warning modes of the warning unit respectively, the critical mode being not corresponding to the sound-emitting element so that the sound-emitting element will not emit sound in the critical mode.