JP6478148B2 - Marking stamp - Google Patents

Description

  The present invention relates to a marking stamp removably attached to a marking torque wrench.

  Patent Document 1 describes a torque wrench with a marker. An angular axis is disposed at the tip of the head of the torque wrench with a marker, and the socket with a built-in marker is removably attached to the angular axis. A marker is disposed in the bore of the socket via a marker spring.

Utility model registration number 3174182 gazette

  In the marker-equipped torque wrench (marking torque wrench) of Patent Document 1, when the marker (marking stamp) is refilled with ink, the marker is removed from the bore of the socket. At this time, since the marker moves inside the marker spring (coil spring) held on the socket side, the marker ink easily adheres to the marker spring, which contributes to the contamination. In addition, when a large amount of ink adheres to the marker spring and is hardened, the elastic force of the marker spring may be reduced, which may cause the marking function to be deteriorated. For this reason, the marker spring must be cleaned frequently, which is cumbersome.

  Then, an object of this invention is to provide the marking stamp which can suppress the adhesion of the ink to a coil spring.

  In order to achieve the above object, a first aspect of the present invention is a marking stamp removably mounted on a marking torque wrench, comprising a cartridge body, a stamp core, and a coil spring.

Cartridge body, Ri cylindrical body shape der extending linearly, that having a a main body and a cover. Inside the main body, Ru is accommodated ink impregnated material ink impregnated. One end of the cover is detachably secured to the main body, the outer peripheral surface of one end of the cover scan pulling locking portion is formed, the other end of the cover you opening. Stamp core is a rod-like body extending held in the cartridge body while inserting the cover to the cartridge body coaxially linearly and stamp proximal end is inserted into the main body in contact with the ink-absorbing member, the cover And a stamp tip projecting from the other end of the The stamp core transfers the ink impregnated in the ink impregnating material from the proximal end to the distal end of the stamp by capillary action. Coil spring is disposed on the outer periphery of the cover, one end of the stamp base end is held on the cover by engaging the spring locking portion. In the spring mounted state in which one end of the coil spring is locked to the spring locking portion, the distance from the spring locking portion to the other end of the cover is longer than the distance from the spring locking portion to the other end of the coil spring.
A second aspect of the present invention is the marking stamp according to the first aspect, wherein the body is in the form of a cylinder extending linearly from the open end of the body. The cover is in the form of a cylinder extending linearly and having one end and the other end open. One end of the cover is detachably fixed to the body and extends continuously and linearly from the body opening end. The stamp core is held by the cover, and the base end of the stamp protrudes into the interior of the body to contact the ink impregnating material.

In the configuration of the first and second aspects, since the coil spring is held by the cartridge body by locking one end thereof to the spring locking portion, the marking received in the stamp receiving space on the marking torque wrench side When the stamp is removed from the stamp receiving space, it is removed from the stamp receiving space together with the cartridge body and the stamp core, and the stamp core does not move relative to the coil spring. Similarly, when the marking stamp is mounted in the stamp accommodation space, the stamp core does not move relative to the coil spring. Therefore, the adhesion of the ink from the stamp core to the coil spring can be suppressed.

Further , the coil spring is mounted on the outer periphery of the cover, and the stamp core is held by the cover in a state of inserting the cover, so the cover is interposed between the stamp core and the coil spring. Therefore, the adhesion of the ink from the stamp core to the coil spring can be further reliably suppressed.

In the second aspect, the cover is detachably fixed to the body and the stamp core and the coil spring are held by the cover, so the stamp core held by the cover is prepared as a stamp core part for replacement. It is possible to For example, when replacing the stamp core due to damage to the tip of the stamp, etc., remove the stamp core part (cover and stamp core) in use from the body with the coil spring and attach the cover of the new stamp core part to the body In addition, since the coil spring may be replaced, the stamp core can be easily replaced. In addition, a cover may be used repeatedly and a coil spring may be included in the stamp core part for replacement | exchange.

A third aspect of the present invention is the marking stamp of the second aspect, wherein an internal thread is formed on the inner peripheral surface of the body open end side of the body main body. The cover has a cylindrical shape extending linearly from the cover first open end at one end to the cover second open end at the other end , and an external thread is formed on the outer peripheral surface of the cover at the cover first open end side. The spring locking portion is formed on the outer peripheral surface of the cover between the male screw and the cover second open end, and the male screw is screwed to the female screw of the body main body to detachably fix the cover to the body main body Be done. The stamp proximal end of the stamp core protrudes from the cover first open end into the inside of the body body to contact the ink impregnation material, and the stamp tip end of the stamp core projects from the cover second open end.

  In the above configuration, since the cover is detachably fixed to the body main body by screwing the male screw and the female screw, the cover can be easily and reliably attached to and detached from the body main body.

  According to the marking stamp of the present invention, it is possible to suppress the adhesion of the ink to the coil spring.

It is a disassembled side view which shows the marking stamp which concerns on one Embodiment of this invention in a partial cross section. It is a side view which shows the assembled state of the marking stamp of FIG. It is a side view which shows an example of the marking torque wrench in which a marking stamp is used in a partial cross section. It is a figure which shows operation | movement of the marking mechanism of the marking torque wrench of FIG. 3, (a) shows at the time of toggle open | release, (b) each shows the time of stamp operation.

  Hereinafter, a marking stamp 1 according to an embodiment of the present invention will be described based on the drawings. The marking stamp 1 is detachably attached to the marking torque wrench 20 (see FIG. 3).

  As shown in FIGS. 1 and 2, the marking stamp 1 includes a cartridge body 2, a stamp core 3 and a coil spring 4.

  The cartridge body 2 has a body body 5, a cover 6 and a cartridge cap 7.

  The body main body 5 has a cylindrical shape which linearly extends and is open at both ends. A female screw 8 is formed on the inner peripheral surface on one end (body open end 5a) side of the body main body 5, and the inside of the body main body 5 on the other end 5b side than the female screw 8 Impregnation material) 9 is accommodated. The batting 9 is made of a material having a function of absorbing and holding the ink. The cartridge cap 7 closes the other end 5 b of the body 5. The closing of the other end 5b of the main body 5 by the cartridge cap 7 is not closing in a closed state, but closing with a gap that allows air to flow. When closed in a closed state, a negative pressure is generated to cause no ink to be discharged from the stamp core 3 or a positive pressure to be generated at the time of refilling the batting 9 with ink, resulting in a situation where the refill is not satisfactorily performed.

  The cover 6 has a cylindrical shape that linearly extends and is open at both ends (cover first open end 6 a and cover second open end 6 b). The male screw 10 is formed on the outer peripheral surface of the cover 6 on the cover first open end 6 a side, and the male screw 10 is screwed to the female screw 8 of the body main body 5, whereby the cover 6 is detachably attached to the body main body 5. It fixes and the cover 1st open end 6a is inserted in the inside of the main body 5 of a body. The region on the second open end 6 b side of the male screw 10 of the cover 6 fixed to the body main body 5 continuously and linearly extends from the body open end 5 a. An annular spring locking groove (spring locking portion) 11 is formed on the outer peripheral surface of the cover 6 between the male screw 10 and the second open end 6 b. The spring locking groove 11 is adjacent to the male screw 10 and exposed to the outer peripheral surface of the cartridge body 2 in a state in which the cover 6 is fixed to the body 5. On the cover second opening end 6 b side of the spring locking groove 11, a tapered surface 12 is formed which decreases in diameter toward the cover second opening end 6 b.

  The coil spring 4 is mounted on the outer periphery of the cover 6, and one end 4 a thereof is held in the spring locking groove 11 so as to be held by the cover 6. The coil spring 4 is mounted by inserting the cover second open end 6b of the cover 6 into the inner diameter portion of one end 4a of the coil spring 4, moving the coil spring 4 with respect to the cover 6, and one end 4a of the coil spring 4 It is performed by locking in the locking groove 11. Since the tapered surface 12 is provided on the outer peripheral surface of the cover 6 adjacent to the spring locking groove 11, one end 4 a of the coil spring 4 can be easily locked to the spring locking groove 11.

  The coil spring 4 has a function of returning the cartridge body 2 and the stamp core 3 to the initial position when the toggle mechanism 23 (see FIG. 3) is opened, with the marking stamp 1 attached to the marking torque wrench 20 as described later. Have.

  The stamp core 3 is a rod-like body extending coaxially with the cartridge body 2 and held by the cover 6 in a state where the cover 6 is inserted. That is, the cover 6 passes through the inner diameter portion of the coil spring 4, the stamp core 3 passes through the inner diameter hole of the cover 6, and the coil spring 4 is disposed on the outer periphery of the stamp core 3. One end of the stamp core 3 is a stamp base 13 that tapers from the middle. The other end of the stamp core 3 is a stamp tip portion 14 whose diameter is enlarged by a step from the middle part through which the cover 6 is inserted, and which has an outer diameter larger than the inner diameter hole of the cover 6. By inserting the stamp proximal end portion 13 from the second cover opening end 6b, the intermediate portion of the stamp core 3 is inserted through the cover 6 and held. The stamp base 13 protrudes from the cover first open end 6a to the inside of the body 5 and is inserted into and in contact with the batting 9, and the stamp tip 14 protrudes from the cover second open end 6b and is exposed. The stamp core 3 moves the ink impregnated in the batt 9 from the stamp base 13 to the stamp tip 14 by capillary action. As a material of the stamp core 3, for example, a felt, a sponge-like porous rubber, and an elongated synthetic resin bundled in a brush shape are suitable.

  Next, an example of the marking torque wrench 20 on which the marking stamp 1 is mounted will be described. In the following description, the cartridge body 2 and the stamp core 3 excluding the coil spring 4 may be referred to as a marking stamp 1.

  As shown in FIG. 3, the marking torque wrench 20 has a cylindrical torque wrench main body 21, and the head member 22 is rotatably attached to the tip end side of the torque wrench main body 21. A portion of the head member 22 extends into the torque wrench main body 21 and is connected to one side of a toggle mechanism 23 provided on the torque wrench main body 21. The other side of the toggle mechanism 23 is connected to the torque wrench main body 21 side.

  By the toggle operation of the toggle mechanism 23, the fixed state of the torque wrench main body 21 side and the head member 22 side is released at the time of tightening the prescribed torque, and the head member 22 does not follow the tightening force applied to the torque wrench main body The side swings at a predetermined angle.

  The drive member 24 is fixed to the head member 22, and the extension cylinder 25 is attached to the drive member 24 so as to intersect the torque wrench main body 21. A socket for bolt tightening is provided at the tip of the extension cylinder 25. 26 is attached.

  The extension cylinder 25 has an inner diameter hole (stamp accommodation space on the side of the marking torque wrench 20) along the axial direction, and the marking stamp 1 is attached to the inner diameter hole 27. The marking stamp 1 is disposed movably in the axial direction of the extension cylinder 25. The tip end side (stamp tip 14) of the marking stamp 1 is inserted into the through hole 26a provided in the socket 26 and protrudes into the socket 26. It is possible.

  At the socket 26 side end of the inner diameter hole 27 of the extension cylindrical body 25, a step 28 is formed to reduce the inner diameter 27. The step 28 abuts on the other end 4 b of the coil spring 4 of the marking stamp 1 and prevents movement of the coil spring 4 to the socket 26 side. When the marking stamp 1 (the cartridge body 2 and the stamp core 3) is in the normal position (initial position), the coil spring 4 applies only its own weight such as the marking stamp 1 and supports it by elastic force. When the stamp 1 advances (downwardly in the drawing), the coil spring 4 is compressed to generate an elastic force that pushes the marking stamp 1 (the cartridge body 2 and the stamp core 3) back to the initial position.

  The proximal end side of the marking stamp 1 is positioned on the tip end side of the stamp pressing rod 29 disposed in the extension cylinder 25 along the axial direction, and the proximal end side of the stamp pressing rod 29 is provided on the head member 22 It projects to the upper side of the head member 22 through the through hole 22a. At the protruding end of the stamp pressing rod 29, a stamp pressing magnet 30 having a magnetic pole on the surface is attached. A marking mechanism is configured by the marking stamp 1 and the stamp pressing rod 29.

  An extension plate 31 extending in the longitudinal direction of the torque wrench main body 21 is fixed to the head member 22 on the upper side of the torque wrench main body 21. On the upper side of the extension plate 31, the actuating arm 32 disposed along the longitudinal direction of the torque wrench main body 21 is located. The rear side of the actuating arm 32 is rotatably fixed to the rear end of the extension plate 31 by a pin 35. The activation arm 32 extends rearward from the detent and is rotatably supported by a pin 33 provided on the torque wrench main body 21.

  The tip end side of the actuating arm 32 extends so as to reach the position of the stamp pressing rod 29, and the tip side thereof mounts a starting magnet 34 provided with a magnetic pole on the surface toward the stamp pressing magnet 30 side. It is done.

  The stamp pressing magnet 30 and the activation magnet 34 are magnetized so as to have the magnetic poles on the opposite sides as described above, and the respective magnetic poles are the same. In the state where the operation of the toggle mechanism 23 is released, the actuating arm 32 is, as shown in FIG. 4A, the pin 35 so that the actuating magnet 34 is at an initial position apart from the facing position of the stamp pressing magnet 30. Is provided at a position offset in the width direction, so that the actuating arm 32 is positioned with an inclination relative to the longitudinal direction of the torque wrench main body 21.

  On the other hand, when the specified torque is tightened and the toggle mechanism 23 operates to swing the head member 22, the pin 33 acts as a point of action and the start arm 32 rotates about the pin 35 by a predetermined angle. As a result, the front end side provided with the activation magnet 34 is positioned so that the activation magnet 34 is opposed to the stamp pressing magnet 30 (see FIG. 4B). When the toggle is released, the activation arm 32 returns to the initial position, the activation magnet 34 and the stamp pressing magnet 30 are in a positional relationship away from the facing position, and no magnetic force acts on each other.

  Next, the operation of the marking torque wrench 20 will be described.

  The torque for tightening is pre-set to the marking torque wrench 20, and within the socket 26 the bolt head 40 to be tightened is accommodated. At this time, since the toggle mechanism 23 is open, the activation arm 32 is in the initial position, and the activation magnet 34 is positioned away from the facing position of the stamp pressing magnet 30. For this reason, between both magnets 30 and 34, there is almost no influence of the magnetic force of each other, and no force acting on each other is generated. Further, the marking stamp 1 (the cartridge body 2 and the stamp core 3) is supported by the coil spring 4 and is in the initial position, and the stamp pressing magnet 30 is in a state of projecting upward from the head member 22. The tip is also in a state of not substantially projecting into the socket 26.

  When tightening is performed via the torque wrench main body 21 in the above state, the bolt head 40 is rotated by the socket 26 until the preset torque is reached. When the tightening force reaches the preset torque, the toggle mechanism 23 operates to cause the head member 22 to swing. Along with this swinging operation, the activation arm 32 rotates about the pin 35, and the activation magnet 34 faces the stamp pressing magnet 30. Note that the extension plate 31 is provided with a stopper 36 that abuts on the rotating actuating arm 32 to prevent further rotation so that the actuating arm 32 can be accommodated in the directly-facing position.

  The two magnets 30 and 34 have magnetic poles of the same polarity, and when they face each other, their magnetic forces act on each other to generate a repulsive force. Since the activation magnet 34 is supported by the activation arm 32, the vertical position is maintained, and the stamp pressing magnet 30 moves away from the activation magnet 34.

  As the stamp pressing magnet 30 moves, the stamp pressing rod 29 moves, and advances the marking stamp 1 (the cartridge body 2 and the stamp core 3) against the elastic force of the coil spring 4. By advancing the marking stamp 1, the stamp tip 14 at its tip is pushed out of the through hole 26 a of the socket 26 to reach the bolt head 40, and the bolt head 40 is stamped. When the tightening via the torque wrench main body 21 is stopped, the toggle mechanism 23 is opened and the swing of the head member 22 returns to its original state. As a result, the activation arm 32 is also rotated to return to the initial position, and the activation magnet 34 is also moved to a position away from the position facing the stamp pressing magnet 30. As a result, the magnetic force acting between the magnets 30 and 34 disappears, and the repulsive force for moving the stamp pressing magnet 30 is lost. Then, the pressing force applied to the marking stamp 1 via the stamp pressing rod 29 disappears, and the marking stamp 1 (the cartridge body 2 and the stamp core 3) is pushed back by the elastic force of the coil spring 4 and returns to the initial position. Do.

  Next, the removal and attachment operation of the marking stamp 1 will be described.

  The marking stamp 1 is removed from the marking torque wrench 20 when it is necessary to replace parts due to replenishment of consumed ink or damage to the stamp tip 14 or the like. When the marking stamp 1 is removed, the extension cylinder 25 is removed from the torque wrench main body 21 and the marking stamp 1 in the inner diameter hole 27 is extracted from the opening on the connection end (upper end in FIG. 3) with the torque wrench main body 21. At this time, since the coil spring 4 is held by the cover 6 (the cartridge body 2) by the one end 4a of the coil spring 4 being locked in the spring locking groove 11, the coil spring 4 is taken out together with the cartridge body 2 and the stamp core 3.

  The marking stamp 1 removed from the marking torque wrench 20 is attached to the marking torque wrench 20 by an operation reverse to that at the time of removal after ink replenishment, replacement of parts and the like are performed.

  According to the present embodiment, since the coil spring 4 is held by the cartridge body 2 by the one end 4a of the coil spring 4 being locked in the spring locking groove 11, the marking stamp 1 is inserted from the inner diameter hole 27 on the marking torque wrench 20 side. When taking it out, it is taken out together with the cartridge body 2 and the stamp core 3, and the stamp core 3 does not move relative to the coil spring 4. Similarly, when the marking stamp 1 is attached to the inner diameter hole 27, the stamp core 3 does not move relative to the coil spring 4. Therefore, the adhesion of the ink from the stamp core 3 to the coil spring 4 can be suppressed.

  Further, since the coil spring 4 is mounted on the outer periphery of the cover 6 and the stamp core 3 is held by the cover 6 with the cover 6 inserted, the cover 6 intervenes between the stamp core 3 and the coil spring 4. Therefore, the adhesion of the ink from the stamp core 3 to the coil spring 4 can be further reliably suppressed.

  Further, since the cover 6 is detachably fixed to the body 5 and the stamp core 3 and the coil spring 4 are held by the cover 6, the stamp core 3 held by the cover 6 is prepared as a stamp core part for replacement. It is possible to For example, when replacing the stamp core 3 due to damage to the stamp tip 14, etc., the stamp core parts (cover 6 and stamp core 3) in use are removed from the main body 5 together with the coil spring 4 Since the cover 6 may be attached to the main body 5 and the coil spring 4 may be replaced, the stamp core 3 can be easily replaced. The cover 6 may be used repeatedly, and the coil spring 4 may be included in the stamp core part for replacement.

  Furthermore, since the cover 6 is detachably fixed to the body 5 by screwing the male screw 10 and the female screw 8, the cover 6 can be easily and reliably attached to and detached from the body 5.

  Although the embodiment to which the invention made by the inventor is applied has been described above, the present invention is not limited by the description and the drawings that form a part of the disclosure of the present invention according to this embodiment. That is, it is needless to say that other embodiments, examples, operation techniques and the like made by those skilled in the art based on this embodiment are all included in the scope of the present invention.

  For example, the spring locking groove 11 may be formed in the body 5 instead of the cover 6. Further, the cover 6 may be omitted, or the body 5 and the cover 6 may be integrally formed.

  The marking stamp of the present invention can be used in various marking torque wrenches.

DESCRIPTION OF SYMBOLS 1 Marking stamp 2 Cartridge body 3 Stamp core 4 Coil spring 4a One end 5 of coil spring Body body 5a Body open end 6 Cover 6a Cover 1st open end 6b Cover 2nd open end 8 Female screw 9 Cotton (ink-impregnated material)
10 Male thread 11 Spring locking groove (spring locking portion)
13 Stamp base end 14 Stamp tip 20 Marking torque wrench 25 Extension cylindrical body 27 Inner diameter hole of extension cylindrical body (stamp accommodation space)

Claims (3)

A marking stamp that is removably attached to the marking torque wrench,
A cylindrical body shape that extends linearly, the spring engaging portion on the outer peripheral surface of the one end with the main body of the ink-absorbing material which ink is impregnated with Ru housed inside, one end is detachably secured to the main body a cartridge body but is formed, that the other end having a cover which opens,
A stamped rod end held by the cartridge body in a state in which the cover is inserted and extending coaxially with the cartridge body, the stamp base end portion being inserted into the inside of the body body and contacting the ink impregnating material; A stamp core having a stamp tip projecting from the other end of the cover and moving ink impregnated in the ink impregnating material from the base end of the stamp to the stamp tip by capillary action;
Disposed on an outer periphery of the cover, and a coil spring which is held in the cover by the end of the stamp base end is engaged with the spring engaging portion,
In a spring mounted state in which the one end of the coil spring is locked to the spring locking portion, the distance from the spring locking portion to the other end of the cover is the other end of the coil spring from the spring locking portion A marking stamp characterized by being longer than the distance . The marking stamp according to claim 1 , wherein
Before SL main body is a cylindrical body shape extending linearly from the body open end,
Before SL cover, the one end and the other end extends linearly is cylindrical body shape opening, continuously extends straight from said body open end wherein the first end is detachably fixed to the main body ,
Before Symbol stamp core is held before Symbol cover,
A marking stamp, wherein the proximal end portion of the stamp protrudes into the inside of the body main body and contacts the ink impregnating material. A marking stamp according to claim 2, wherein
A female screw is formed on the inner peripheral surface of the body open end side of the body main body,
The cover has a cylindrical shape extending linearly from the cover first open end of the one end to the cover second open end of the other end ,
An external thread is formed on the outer peripheral surface of the cover on the first open end side of the cover,
The spring locking portion is formed on the outer peripheral surface of the cover between the male screw and the cover second open end.
By screwing the male screw into the female screw, the cover is detachably fixed to the body main body,
The stamp proximal end portion of the stamp core protrudes from the cover first open end into the inside of the body main body and contacts the ink impregnating material;
A marking stamp according to claim 1, wherein the stamp tip of the stamp core protrudes from the cover second opening end.

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