JPH0711893Y2 - Torque wrench with marker - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention utilizes the toggle operation of a single-purpose torque wrench or a preset torque wrench that is used when tightening a screw, and when the tightening of the tightened screw is completed, , A torque wrench with a marker provided with a marker for marking the tightening screw.

[Conventional technology]

The present inventor has developed a torque wrench with a marker having a structure shown in FIGS. 4 and 5 as a marking means for indicating the completion of tightening on a tightened screw. This torque wrench with a marker
In addition, the support pin 21 is projected, and the support pin 21 is
The movable body 22 is pivotally attached at a substantially central portion, and one end of the movable body 22 is connected to a torque wrench head 23 via a stud 24, and the other end of the movable body 22 is provided with a flexible elastic arm. A torque wrench with a marker, characterized in that a marker 27 located substantially on the same plane as the contact surface 26 of the torque wrench head 23 with the object to be tightened is attached via 25.

[Problems to be solved by the device]

However, in the prior example of such a structure, since the marking is made only on one surface of the bolt that is the object to be tightened, there is a problem that the marking is shielded by other structures and the visual confirmation cannot be performed quickly and easily. Sometimes.

[Means for Solving the Problems]

The present invention has been made in order to eliminate the above-described problems caused by the prior art, and by providing two movable bodies at two opposing positions via two flexible elastic bodies, (EN) It is possible to provide a torque wrench with a marker, which enables marking to be performed on substantially the entire circumference and allows quick and easy visual confirmation of marking.

〔Example〕

The present invention will be described below in detail with reference to the embodiments shown in FIGS.

6 is a torque wrench head, and this head 6 is
A cylindrical operation lever 1 is connected via a head pin 15, and a thruster 17 is connected to a tail end of the head 6 via a toggle 16. Two
Reference numerals 3 and 3 denote support pins projectingly provided on the outer side surface of the operation lever 1. The support pin 2 is pivotally attached to the central portion of the movable body 4, and the support pin 3 is attached to the movable body 5. One end of the movable body 4 and the movable body 5 are rotatably connected by a pin 8 at a position approximately in the middle of the support pins 2 and 3, respectively. Has
It is pivotally attached to the tail end of the head 6 via a stud 7. Flexible elastic arms 9 and 10 in the form of leaf springs are attached to the movable bodies 4 and 5, and the tip ends of the flexible elastic arms 9 and 10 contact the tightened body of the head 6. Markers 13 and 14 which are located substantially on the same plane as the surfaces 11 and 12 are attached. The markers 13 and 14 are sponge bodies that are impregnated with ink or the like. Reference numeral 18 denotes a protective cover for the movable bodies 4 and 5.

The structure of this embodiment has been described above. Next, the operation thereof will be described. First, the head 6 of the torque wrench is fitted into the head portion of the bolt 19 to be fastened, and the operating lever 1 of the torque wrench is operated there. Then, the bolt 19 is tightened, and when the tightening force is set and the torque wrench operating point is reached, the toggle 16 operates, and as a result, the head 1 is displaced with the head pin 15 as a fulcrum as shown in FIG. By the operation of the head 1, the movable body 4 connected to the head 1 via the stud 7 is rotated counterclockwise in FIG. 3 with the support pin 2 as a fulcrum. The marker 12 attached via the flexible elastic arm 9 is elastically abutted against the side surface of the bolt 19 which is the tightened body, and the movement of the movable body 4 caused by the operation of the head 1 is
It is transmitted to the movable body 5 through the pin 8 provided on the movable body 4, and is rotated clockwise about the support pin 3 in FIG. 3, so that the flexible elastic arm 10 is attached to the movable body 5.
The marker 14 attached via the pin is also elastically abutted on the side surface of the bolt 19 which is the object to be fastened. As a result, markings are made on the both side surfaces of the bolt 19 by ink adhesion.

As described above, according to this embodiment, the toggle 16 is operated when screw tightening is completed by operating the operation lever 1 of the torque wrench.
Is operated, and two markers provided opposite to each other in relation to the operation of the toggle are elastically abutted on both side surfaces of the bolt 19 which is the object to be tightened, so that the tightening is completed. The markings on the bolts are made almost all around.

[Effect of device]

As described above, according to the present invention, the operation lever 1 of the torque wrench equipped with the toggle is provided with the first support pin 2 and the second support pin 3, and the first support pin 2 has the first support pin 2 and the second support pin 2. One movable body 4 is pivotally attached to a substantially central portion, one end of a second movable body 5 is pivotally attached to a second support pin 3, and these movable bodies are further attached to a substantially middle portion of each support pin. Is rotatably connected to the first movable body 4 and one end of the first movable body 4 is engaged with the torque wrench head 6 connecting the toggle 16 via the stud 7, and the first movable body 4 and The contact surface 11 of the torque wrench head 6 with the object to be fastened and the contact surface 11 with the flexible elastic arms 9 and 10 are provided on the second movable body 5 respectively.
Since the torque wrench with a marker is characterized in that the marker parts 13 and 14 located on substantially the same plane as the 12 are attached, according to this, the pair of markers 13 and 14 allows It is possible to carry out marking over substantially the entire circumference, which provides the effect that the visual confirmation of marking can be carried out easily and without error.

[Brief description of drawings]

FIG. 1 is a plan view of a torque wrench according to the present invention, FIG. 2 is a side view thereof, FIG. 3 is a motion explanatory view thereof, FIG. 4 is a plan view of a prior example, and FIG. 5 is a side view thereof. is there. DESCRIPTION OF SYMBOLS 1 ... Operation lever, 2 ... Support pin (A) 3 ... Support pin (B), 4 ... Movable body (A) 5 ... Movable body (B), 7 ... Stud 9 ... Arm (A), 10 ... Arm (B) ) 11,12… Contact surface of the object to be clamped 13… Marker (A), 14… Marker (B) 15… Head pin, 16… Toggle 17… Thruster, 18… Movable body protection cover

Claims (1)

[Scope of utility model registration request] 1. A first supporting pin (2) and a second supporting pin (3) projecting from an operating lever (1) of a torque wrench equipped with a toggle, and a first supporting pin (2). ) Is pivotally attached to the substantially central portion of the first movable body (4), and one end of the second movable body (5) is pivotally attached to the second support pin (3). Of the first movable body (4) is rotatably connected to the torque wrench head (6) connecting one end of the first movable body (4) to the toggle (16). The torque wrench head is engaged through the stud (7) and is provided to the first movable body (4) and the second movable body (5) through flexible elastic arms (9) and (10), respectively. Attach markers (13) and (14) to be located on substantially the same surface as the contact surfaces (11) and (12) with the object to be tightened (6). Marker with a torque wrench, characterized in that it consists.