JP2521590Y2 - Wrench with sensor for each color - Google Patents

Description

[Detailed description of the device]

[0001]

[Field of Industrial Application] The present invention attaches a color sensor to a wrench such as a torque wrench or ratchet wrench,
The present invention relates to a wrench capable of confirming whether or not a screw such as a specified colored bolt or nut is tightened.

[0002]

2. Description of the Related Art When tightening a specified number of bolts and nuts (hereinafter referred to as screws) to a screw tightening body such as a predetermined work piece, the specified screw is given a specific coloring In some cases, it is required to set or confirm the tightening torque value for each color.

As described above, in the conventional example in which a large number of screws for each colored section are tightened by using, for example, a torque wrench, the screw tightening operator visually confirms the colors of the screws, The screws whose colors were visually confirmed were tightened with a torque wrench or the like set to a specified torque value. For screws for which tightening torque management is important, for example, a screw tightened with a torque value such as a torque wrench is used to make a marking by coloring, and finally the operator visually confirms the marked screw. The screw tightening work such as re-tightening was performed.

[0004]

[Problems to be Solved by the Invention] However, as described above, the operator visually confirms the color-coded screws to determine whether the prescribed number of the prescribed screws is used at the prescribed tightening location. For tightening with a torque wrench set to a torque value of, or for screws that require torque management, to indicate that it has been tightened with a torque wrench set to a specified torque value,
Marking the screw and visually checking the last marked screw by the operator to re-tighten, it is uncertain that the worker can confirm the number of screws of the specific color screw and the workability is poor. There was a problem.

[0005]

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned conventional problems. A wrench head such as a torque wrench or a ratchet wrench is provided with a color sensor and the wrench is used. When tightening the screws,
To provide a wrench with a color-coded sensor that can mechanically and electrically check how many screws of a specific color are tightened to save labor for the operator and prevent misidentification. Especially.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in detail with reference to the embodiments shown in the drawings. In this embodiment, a torque wrench is used as a screw tightening wrench.

In FIGS. 1 and 2, reference numeral 1 denotes a handle of a torque wrench, and a head portion 3 is pivotally supported by a spindle 2 at the tip of the handle 1. A well-known toggle mechanism that operates with the tightening torque of a screw that is engaged and tightened by the head portion 3 is installed inside the handle 1.

Reference numeral 4 denotes a ratchet that is rotatably supported in the head portion 3. The ratchet 4 has a square drive 6 for inserting and holding a socket 5 shown in FIG.
Are integrally formed. A through hole 7 is formed along the central axis of the angular drive 6 and the ratchet 4, and a color sensor 8 protruding from the tip of the angular drive 6 presses against the elastic force of a spring 9 in the through hole 7. It is provided so as to project from the tip end surface of the corner drive 6. That is, the color-dependent sensor 8 can be pushed into the through hole 7 against the elastic force of the spring 9.

The signal line 10 expended from the color sensor 8
Is connected to an amplifier 11 attached to the outside of the handle 1. Signal line 12 drawn from this amplifier 11
Is connected to a management device such as a computer (not shown). Reference numeral 13 is a protective cover for the amplifier 11, and reference numeral 14 is a tightening screw number confirmation device for mechanically detecting the number of screws tightened with a specified tightening torque value. Since this tightening screw number confirmation device is known from, for example, Japanese Patent Publication No. 50-32194, its structural description will be omitted.

The structure of this embodiment has been described above. Next, its operation will be described. Using the torque wrench and the socket 5 having the structure described above, the bolt 16 having the colored marking 15 on its head is tightened. When the socket 5 is fitted to the head of the bolt 16 when performing, the tip of the color-coding sensor 8 approaches the marking 15, and as a result, the color-coding of the bolt 16 to be tightened or tightened is detected. The color-specific detection signal is input to a computer or the like via the amplifier 11. Further, by rotating the handle 1 and tightening the bolt 16 until the toggle moves, it is possible to know how many screws are tightened with a specified torque by the screw number confirmation device 14. Therefore, it is possible to detect mechanically and electrically how many bolts of a specific color are tightened at a predetermined torque value.

In the above embodiment, the color wrench sensor 8 is provided in the torque wrench, but the invention is not limited to this. For example, if the ratchet wrench is provided with the color sensor 8, the tightening torque can be increased. Although it cannot be detected, it is possible to check the number of tightened screws of a specific color.

Further, in the above embodiment, the screw is the bolt 16
However, in the case of a nut, the tip of the bolt may protrude from the nut surface by tightening the nut. In this case, even if the tip of the sensor 8 is pushed by the protruding tip of the bolt, the pushing Since the pressure can be absorbed by the spring 9, color-based judgment can be surely made even when the nut is tightened.

[0013]

As described above, the present invention is a torque wrench,
Since the wrench head part such as ratchet wrench is equipped with a color sensor that detects the color marking applied to the screw to be tightened by the wrench, the number of screws of a specific color that can be tightened with this wrench In addition, there is an effect that it can be confirmed mechanically and electrically accurately and the data can be easily managed.

[Brief description of drawings]

FIG. 1 is a plan view showing a torque wrench according to an embodiment of the present invention.

FIG. 2 is a side view showing a torque wrench according to an embodiment of the present invention.

FIG. 3 is an enlarged view of a main part of the embodiment of the present invention.

[Explanation of symbols]

1 ... Handle 2 ... Spindle 3 ... Head part 4 ... Ratchet 5 ... Socket 6 ... Square drive 7 ... Through hole 8 ... Color sensor 9 ... Spring 10 ... Signal line 11 ... Amplifier 12 ... Signal line 13 ... Protective cover 14 ... Tightening screw number confirmation device 15 ... Marking 16 ... Bolt

Claims (1)

(57) [Scope of utility model registration request] 1. A torque wrench, the wrench head portion such as a ratchet wrench, color, characterized in that allowed comprising a Color sensor for detecting the color tone of the Color mark being facilities to the screw to tighten by the wrench Wrench with another sensor.