JP5620766B2 - marker - Google Patents

Description

  The present invention relates to a marker provided on a torque tool such as a fastening member such as a bolt fastened with a predetermined torque or a torque wrench for marking a predetermined portion.

  In order to clarify the distinction between a screw that has been fastened and a non-fastened screw in a fastening operation for fastening a large number of screws in a device that requires a large number of screws that are fastening members, for example, At the time of screw tightening with a torque wrench, etc., at the same time as the screw tightening is completed, a mark is applied to the screw head of the completion of the tightening and the mark is attached to recognize that the screw has been fastened. A torque wrench with a marker that can be used has been proposed (Patent Document 1).

  4 to 7 show a conventional example of a torque wrench with a marker. The torque wrench main body 31 is attached to a tube 33 having a toggle mechanism 32 that constitutes a torque limiter, a head 35 that is pivotally supported by a support shaft 34 attached to the tip of the tube 33, and a rear end of the tube 33. The grip 36 is provided.

  The torque wrench main body 31 is provided with a marker driving mechanism 37 that interlocks the marker by the operation of the toggle mechanism 32. As shown in FIG. 7, the marker driving mechanism 37 has an L-shaped link 39 that is pivotally supported by a spindle pin 38 that is fixed to the outside of the tube 33, and one end of the link 39 is screwed. The other end of the link 39 is in contact with the lever 41 through a spherical body 42 through the adjustment screw 40 that is attached.

  One end of the lever 41 is pivotally supported by the tube 33, and the other end is engaged with the marker head 44 of the marker mechanism 43. Reference numeral 45 denotes a cover of the marker driving mechanism 37.

  As shown in FIG. 6, the marker mechanism 43 is configured such that the upper end of the cylindrical adapter 49 is coupled to a hexagonal shaft portion 48 formed at the lower end of a latitudinal tube 46 having a latitudette 47 provided in the head 35. They are held together by screws 50. The socket 51 is fitted to the lower end portion of the cylindrical adapter 49 so as to be slidable in the axial direction. The sliding range includes a through hole 52 which is long in the generatrix direction of the cylindrical adapter 49 and the through hole. It is regulated by a guide pin 53 that is loosely fitted in 52 and is implanted in the socket 51.

  The marker head 44 holds the upper end of a marker rod 54 inserted into the inside of the cylindrical adapter 49 in the latitudinal tube 46, and holds the marker 55 in which colored ink is impregnated in a sponge, for example, at the lower end of the marker rod 54 A marker case 56 is held via a connecting pin 57 and an O-ring 58.

  In addition, 59 is a spring that allows the marker rod 54 to move up and down, 60 is a restoring spring for the lever 41, 61 is interposed between the upper end of the socket 51 and a retaining ring 62 provided on the cylindrical adapter 49, so that the socket 51 is a spring that always pushes down 51. 63 is a nut which is a screw to be tightened, and 64 is its bolt.

  Therefore, when the nut 63 is screwed by the torque wrench body 31 provided with the marker mechanism 43, the socket 51 is fitted to the nut 63 as shown in FIG. Is reciprocated to rotate the socket 51 through the latitudinal tube 46 and the cylindrical adapter 49, and the nut 63 is tightened. When the tightening torque reaches a predetermined value, the toggle 32 in the torque wrench body 1 operates. .

  When the toggle 32 is operated, the head 35 moves counterclockwise in FIG. 4 with the support shaft 34 as a fulcrum. Therefore, the link 39 moves clockwise with the support pin 38 as a fulcrum in FIG. Rotate. The lever 41 whose one end is supported by the lever fulcrum 65 by the operation of the link 39 is pushed down as shown by a chain line in FIG. 5, so that the marker head engaged with the tip of the lever 41 is engaged. 44 is depressed. When the marker head 44 is pushed down, the marker rod 54 is pushed down against the elastic force of the spring 60, and the marker 55 attached to the lower end of the marker rod 54 is pushed against the tip of the bolt 64 and screwed. A marking is made to signify that the fastening has been completed.

Japanese Patent Laid-Open No. 08-090442

  Since the conventional torque wrench marker having the above-described configuration is not easy to use, various markers having a structure similar to a writing instrument using oil-based ink have been proposed. This improved marker is equipped with an elongated rod-shaped marker body that can be moved in the longitudinal direction at the tip of the ink case filled with ink, and the ink valve disposed in the ink case can be moved along the longitudinal direction. The required amount of ink is supplied to the marker body.

  An ink supply port for refilling ink is formed at the rear end of the ink case. As a means for closing the ink supply port, the ink supply port is a screw hole, and a screw portion that is screwed into the screw hole is provided. In addition, there has been proposed a screw cap or a rubber plug cap having a rubber plug formed to have a diameter larger than the inner diameter of the ink supply port and inserting the rubber plug into the ink supply port.

  However, with such a cap, it is not clear how much the screw can be tightened or pushed in when ink is replenished, and unskilled workers may cause tightening failure. Further, since the cap is configured to be removed from the ink supply port, it may be possible to lose the cap or forget to attach it.

  Furthermore, tightening the screw cap and pushing the rubber plug cap increases the internal pressure in the ink case, and ink bubbles from the gap between the ink supply port and the screw and the gap between the ink supply port and the rubber plug. In some cases, it may flow backward.

  In addition, when refilling ink, it was sometimes impossible to determine the remaining amount of ink or the replenishment state from the appearance, and it was confirmed that the refilling ink overflowed from the ink supply port and became full for the first time.

  An object of the present invention is made in view of such a conventional problem, and is a marker provided on a torque tool such as a torque wrench that does not lose the cap of the ink supply port and can be reliably capped even if not familiar with ink replenishment work. Is to provide.

  In addition to the above-described object of the present invention, another object of the present invention is to provide a marker provided on a torque tool such as a torque wrench that can easily confirm the filling state of ink filled in the ink case from the outside. There is to do.

  A configuration for realizing the object of the present invention is provided in a torque tool such as a tightening fastening member or a torque wrench for marking a predetermined portion with a predetermined torque, and a marker main body is attached to the tip of a cylindrical ink case, A marker for closing an ink supply port formed at a rear end portion of the ink case with an ink cap, the hinge portion connecting the ink cap and the rear end portion of the ink case, and a hinge as the fulcrum And a plug portion formed inside the ink cap that is inserted into the ink supply port by rotating the ink cap in the closing direction.

  In the above-described configuration, the insertion plug portion is formed with an engagement protrusion on the outer peripheral portion in the circumferential direction, and an inner diameter on the inner end side of the ink supply port is smaller than an outer diameter of the engagement protrusion. It is characterized by that.

  In any one of the configurations described above, a notch portion that faces the edge of the ink cap in a closed state is formed in the outer peripheral edge portion of the rear end portion of the ink case.

  According to another aspect of the present invention, in any one of the above structures, the ink case is formed of a synthetic resin material that is transparent or light transmissive so that the ink filled therein can be visually recognized from the outside. An ink scale indicating the ink filling amount is formed on the outer periphery of the ink case.

In the above configuration, the ink scale and the notch are formed on the same axis along the axial direction.

  According to the present invention, the ink cap is not lost, the operator's hand is soiled with ink when ink is replenished, and ink leakage due to excessive ink can be eliminated, and the ink cap can be easily and securely tightened. it can.

  In addition, the remaining amount of ink can be visually confirmed based on the ink scale formed on the side surface of the ink case, and the remaining number of prints and the next ink replenishment time can be easily managed.

The longitudinal cross-sectional view of the marker which shows embodiment of this invention. The external appearance perspective view which shows the state which removed the cap of the marker of FIG. FIG. 3 is an external top view of the ink case of the marker in FIG. 2. The top view of the conventional torque wrench with a marker. The front view of FIG. The expanded sectional view of the marker attaching part of FIG. The AA arrow directional view of FIG.

  1 to 3 show an embodiment of the present invention. 1 is a longitudinal sectional view of a marker showing an embodiment of the present invention, FIG. 2 is an external perspective view showing a state in which the cap of the marker of FIG. 1 is removed, and FIG. 3 is an external top view of the ink case of the marker of FIG. It is. In addition, it cannot be overemphasized that the marker of this embodiment can be mounted | worn with the conventional torque wrench with a marker shown in FIGS. 4-7, and is mounted | worn with the torque wrench with a marker of various structures.

  The marker 1 according to the present embodiment includes an ink case 2 formed in a cylindrical shape, an elongated columnar marker body 3 that is attached to the tip portion of the ink case 2 so as to be movable in the longitudinal direction, and the tip portion of the ink case 2. And an elongated marker cap 4 detachably attached to the ink case 2 and an ink valve 5 disposed in the ink case 2.

  The ink case 2 includes an ink case main body 2a, a front end cylindrical portion 2b that is bonded and fixed to the front portion of the ink case main body 2a with an adhesive or the like, and has an outer diameter smaller than that of the ink case main body 2a, and a front end cylindrical portion 2b. A partition wall 6 is disposed between the rear end and the front end of the ink case main body 2a and has an ink hole 6a at the center.

  The ink hole 6a of the partition wall 6 constitutes a valve seat of the ink valve 5, and the valve body 5a of the ink valve 5 is inserted into the ink hole 6a.

  In the ink valve 5, a spring member 5c mounted in a spring seat 5b formed in a truncated cone shape urges the valve body 5a toward the marker body 3 side. The spring seat 5b is formed with a hole through which ink can flow, and an outer end extending radially outward is engaged with an engagement step 2c formed at the inner end of the ink case body 2a. The rearward movement of the spring seat 5b is restricted.

  That is, when the marker main body 3 comes into contact with the portion to be printed and moves backward against the spring force of the spring member 5c, the valve body 5a is moved backward, the ink hole 6a is opened, and the ink in the ink case 2 is discharged. The ink is soaked into the marker body 3 by being supplied to the distal end cylinder portion 2b.

  On the other hand, an ink supply port 7 is formed at the rear end of the ink case main body 2a, and an ink cap 8 is formed integrally with the ink case 2a via a hinge portion 9 so as to close the ink supply port 7. Yes.

  The ink supply port 7 has a truncated cone surface in which the inner diameter of the inner end 7a is smaller than the inner diameter of the outer end 7b. The ink cap 8 has a cap body 8a having the same outer diameter as that of the ink case body 2a, a cylindrical plug portion 8b formed on the inner surface of the cap body 8a, and an outer surface of the plug portion 8b. It is comprised by the engagement protrusion part 8c formed in the circumferential direction. A part of the outer peripheral end of the cap body 8a and a part of the outer peripheral end of the rear end part of the ink case main body 2a are connected by a hinge part 9 formed by integral molding with a thin wall.

  The outer diameter of the engaging protrusion 8c is larger than the inner diameter of the inner end 7a of the ink supply port 7, and smaller than the inner diameter of the outer end 7b. Therefore, when the cap body 8a is rotated in the closing direction with the hinge portion 9 as a fulcrum, the plug portion 8b enters the ink supply port 7 along the inner surface of the ink supply port 7, and is formed on the outer peripheral surface of the plug portion 8b. When the engaging projection 8c engages with the inner end 7a of the ink supply port 7 and the engagement projection 8c is pushed in strongly when passing through the inner end 7a of the ink supply port 7, the engagement projection 8c becomes the inner diameter. Shrink to the side and get over the inner end 7a. At this time, since a click feeling is obtained, it is felt that the ink cap 8 has closed the ink supply port 7 reliably. Further, since the engaging protrusion 8c is formed in a tapered shape in cross section, when it gets over the inner end 7a, a force for urging the ink cap 8 toward the front end side is generated due to the wedge effect, and the cap body 8a is moved to the ink. The rear end of the case body 2a is covered without play.

  Further, since the hinge portion 9 is located behind the inner end 7a of the ink supply port 7, the engaging projection 8b is mounted obliquely until reaching the inner end 7a of the ink supply port 7. Unlike the conventional screw cap and rubber plug cap that are inserted straight from the rear on the same axis as the ink supply port 7, the tip of the engaging projection 8 and the inner end 7 a of the ink supply port 7 are different from each other. A gap is formed between the two. For this reason, an increase in pressure in the ink case body 2a due to the mounting of the ink cap 8 is avoided, and ink in the ink case body 2a is prevented from being blown out.

  A notch 10 is formed on the outer peripheral edge of the rear end of the ink case body 2a on the side opposite to the hinge 9, and a fingertip is applied to the notch 10 and the cap body 8a of the ink cap 8 is pushed up with a nail. Thus, the ink cap 8 can be opened.

  The ink case 2 of the present embodiment is formed of a transparent or light-transmitting synthetic resin, and a plurality of ink scales 11 and 12 are integrally formed on the same axis on the outer periphery of the ink case main body 2a. A notch 10 is formed on this axis.

  The ink scale 11 displays a capacity of 100%, and the ink scale 12 displays a capacity of 50%. Since the ink filled in the ink case main body 2 can be observed through the ink case 2a from the outside of the ink case 2a, the current ink remaining amount can be easily confirmed by comparison with the ink scales 11 and 12. For this reason, the remaining number of times of printing and the next ink replenishment time can be easily managed. Further, the opening direction of the ink cap 8 can be easily recognized from the positions of the ink scales 11 and 12 and the notch 10.

  An ink occlusion body (not shown) can be housed in the ink case 2a, and the ink does not jump out of the ink supply port 7 when the ink cap 8 is opened when the ink is replenished.

  Even if the ink cap 8 is opened from the ink supply port 7, the ink cap 8 is connected to the rear end portion of the ink case main body 2 a via the hinge portion 9. By replenishing ink while looking at the ink scales 11 and 12, the ink case main body 2a is not inadvertently overflowed, and the operator's hand is not soiled.

  Further, by making the opening diameter of the ink supply port 7 as large as possible, the ink replenishment operation is facilitated.

  As shown in the conventional example, the marker 1 of the present embodiment is arranged in a cylindrical adapter, and when the tightening torque of a tightening member such as a bolt reaches a set torque value, the marker 1 is engaged with the socket. In addition to the configuration in which marking is performed by moving toward the head and the marker body 3 abuts against the head of the bolt, the present invention can also be applied to the configuration exemplified below.

  For example, when the set torque value is reached, the moving force for moving the marker is taken out of the torque wrench with a cable for remote operation, and for example, a magnet or the like is used in advance at a place to be marked such as a member near the bolt to be tightened. The leading end of the cable is connected to a fixed printing device, the marker 1 is used as a printing body of the printing device, and the marker 1 is moved by the cable to perform printing. In addition, in order to perform marking simultaneously on both the head side surface of the bolt to be tightened and the surface to be fastened, a printing device that accommodates the marker 1 obliquely with respect to the axial direction of the socket is attached to the torque wrench, and the set torque When the value is reached, the marker 1 of the printing device is moved toward the marking location.

DESCRIPTION OF SYMBOLS 1 Marker 2 Ink case 2a Ink case main body 2b End cylinder part 2c Engagement step part 3 Marker main body 4 Marker cap 5 Ink valve 5a Valve body 5b Spring seat 5c Spring member 6 Partition wall 6a Ink hole (valve seat)
7 Ink supply port 7a Inner end 7b Outer end 8 Ink cap 8a Cap body 8b Plug portion 8c Engagement projection portion 9 Hinge portion 10 Notch portions 11 and 12 Ink scale

Claims (5)

  Ink formed on the rear end portion of the ink case, which is provided on a torque tool such as a tightening fastening member with a predetermined torque or a torque tool such as a torque wrench for marking a predetermined position, and a marker main body is attached to the front end portion of the cylindrical ink case A marker for closing the supply port with an ink cap so that the ink cap can be opened and closed, and a hinge portion connecting the ink cap and the rear end portion of the ink case together, and the ink cap is rotated in the closing direction with the hinge portion as a fulcrum And a plug part formed on the inner side of the ink cap inserted into the ink supply port.   The insertion plug portion is formed with an engagement projection portion in a circumferential direction on an outer peripheral portion, and an inner diameter on the inner end side of the ink supply port is smaller than an outer diameter of the engagement projection portion. The marker according to claim 1.   3. The marker according to claim 1, wherein a notch portion that faces an edge of the ink cap in a closed state is formed in an outer peripheral edge portion of a rear end portion of the ink case.   The ink case is formed of a transparent or light-transmitting synthetic resin material in which the ink filled inside is visible from the outside, and an ink scale indicating the ink filling amount is formed on the outer periphery of the ink case. The marker according to any one of claims 1 to 3, wherein: The marker according to claim 4, wherein the ink scale and the notch are formed on the same axis along the axial direction.

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