Wireless data transmitting and receiving system

• US 8,264,374 B2
• Filed: 04/14/2010
• Issued: 09/11/2012
• Est. Priority Date: 04/16/2009
• Status: Active Grant

• Current Assignee: Maeda Metal Industries, Ltd.
• Original Assignee: Maeda Metal Industries, Ltd.
• Inventors: Obatake, Takayoshi, Kaneyama, Yasunobu, Kushida, Toshihiko, Hirai, Tatsuo
• Primary Examiner(s): Lauture, Joseph
• Application Number:
  US12/759,819
• Publication Number:
  US 20100265097A1
• Time in Patent Office: 881 Days
• Field of Search: 340/870.4, 701/41, 701/42, 701/43, 701/99, 738/623.6, 738/622.1, 738/622.2, 738/622.3, 81/55, 81/571.3, 81/571.4
• US Class Current: 340/870.4
• CPC Class Codes: B25B 13/488 for connections where two parts must be turned in opposite directions by one tool
• CPC Class Codes: B25B 21/00 Portable power-driven screw or nut setting or loosening tools; details or components, e.g. casings, bodies, of portable power-driven tools not particularly related to the operation performed B25F5/00; for mounting or dismounting wheels B60B29/006; Attachments for drilling apparatus serving the same purpose machines B23P19/06
• CPC Class Codes: B25B 23/0078 Reaction arms
• CPC Class Codes: B25B 23/14 Arrangement of torque limiters or torque indicators in wrenches or screwdrivers couplings for transmitting rotation or clutches F16D; devices for measuring torque per se G01L
• CPC Class Codes: B25B 23/147 specially adapted for electrically operated wrenches or screwdrivers
• CPC Class Codes: B25F 5/00 Details or components of portable power-driven tools not particularly related to the operations performed and not otherwise provided for

Abstract

There is provided a wireless data transmitting and receiving system that wirelessly transmits a signal regarding a torque acting on a rotary shaft and/or a rotation angle of the rotary shaft from a data transmitting unit disposed in the rotary shaft to a data receiving unit. The wireless data transmitting and receiving system includes: a data transmitting unit (20) provided on the rotary shaft (52) of a tightening machine (50) to detect the torque and the rotation angle, the data transmitting unit (20) including a torque sensor (21) disposed so as to be capable of sensing a toque acting on the rotary shaft (52), a rotation angle sensor (29) disposed so as to be capable of a rotation angle of the rotary shaft (52), and transmitting means (22) that is electrically connected to the foregoing sensors (21,29), and wirelessly transmits signals regarding the torque detected in the torque sensor (21) and the rotation angle detected in the rotation angle sensor (29); and a data receiving unit (30) including receiving means (32) that receives the transmitted signals regarding the torque and the rotation angle, and display means (40) that displays the signals regarding the torque and the rotation angle received by the receiving means (32).

Claims

1. A wireless data transmitting and receiving system comprising:

a data transmitting unit provided on a rotary shaft of a tightening machine and having a function of detecting a torque, the data transmitting unit including a torque sensor disposed so as to be capable of sensing a torque acting on the rotary shaft, and transmitting means that is electrically connected to the torque sensor and wirelessly transmits a signal regarding the torque detected in the torque sensor; and

a data receiving unit including receiving means that receives the signal regarding the torque transmitted from the transmitting means of the data transmitting unit, and display means that displays the signal regarding the torque received by the receiving means.

2. The wireless data transmitting and receiving system according to claim 1, wherein:

the data transmitting unit includes a rotation angle sensor disposed so as to be capable of sensing a rotation angle of the rotary shaft and electrically connected to transmitting means;

the transmitting means wirelessly transmits a signal regarding the rotation angle detected in the rotation angle sensor and;

the data receiving unit includes receiving means that receives the signal regarding the rotation angle transmitted from the transmitting means of the data transmitting unit and display means that displays the signal regarding the rotation angle received by the receiving means.

3. The wireless data transmitting and receiving system according to claim 2, wherein the data receiving unit is disposed on a body side of the tightening machine or inside a housing on a power wire that supplies power to the body, and includes, inside the tightening machine or the housing, a control circuit that controls a power machine rotating the rotary shaft, the control circuit being electrically connected to the receiving means to control the power machine based on the signal regarding the rotation angle received by the receiving means.

4. The wireless data transmitting and receiving system according to claim 2, wherein the data receiving unit determines whether or not the rotation angle is acceptable based on the signal regarding the rotation angle received by the receiving means, and has notifying means that notifies the determination of the acceptance or nonacceptance.

5. The wireless data transmitting and receiving system according to claim 2, wherein storage means that accumulates the signal regarding the rotation angle detected in the rotation angle sensor is included in any one of the data transmitting unit and the data receiving unit.

6. The wireless data transmitting and receiving system according to claim 2, wherein the rotation angle sensor is an encoder, a gyro sensor, a photo interrupter, or a magnetic sensor.

7. The wireless data transmitting and receiving system according to claim 1, wherein the data receiving unit is fixed to a body of the tightening machine.

8. The wireless data transmitting and receiving system according to claim 1, wherein the data receiving unit is disposed on a body side of the tightening machine or inside a housing on a power wire that supplies power to the body, and includes, inside the tightening a machine or the housing, a control circuit that controls a power machine rotating the rotary shaft, the control circuit being electrically connected to the receiving means to control the power machine based on the signal regarding the torque received by the receiving means.

9. The wireless data transmitting and receiving system according to claim 1, wherein the data receiving unit determines whether or not the torque is acceptable based on the signal regarding the torque received by the receiving means, and has notifying means that notifies the determination of the acceptance or nonacceptance.

10. The wireless data transmitting and receiving system according to claim 1, wherein the data transmitting unit has a plurality of antennas.

11. The wireless data transmitting and receiving system according to claim 1, wherein storage means that accumulates the signal regarding the torque detected in the torque sensor is included in any one of the data transmitting unit and the data receiving unit.

12. The wireless data transmitting and receiving system according to claim 1, wherein the rotary shaft includes an inner shaft and an outer shaft rotatable in a reverse direction to each other, and the data transmitting unit is disposed in any one of the shafts.

13. The wireless data transmitting and receiving system according to claims 1, wherein the data transmitting unit is detachable.

14. The wireless data transmitting and receiving system according to claim 1, wherein the data transmitting unit has identification means for identifying its own machine with data receiving unit.

15. The wireless data transmitting and receiving system according to claim 1, wherein a deceleration mechanism is disposed between the rotary shaft and the power machine, and the rotation is transmitted from the power machine to the rotary shaft through the deceleration mechanism.

16. The wireless data transmitting and receiving system according to claim 1, wherein the torque sensor is a strain gauge.