WO2009081665A1

WO2009081665A1 - Spanner torque wrench with marking function

Info

Publication number: WO2009081665A1
Application number: PCT/JP2008/070414
Authority: WO
Inventors: Katsuya Yamauchi; Kazuhito Akai; Hiroyuki Imai
Original assignee: Isuzu Motors Limited
Priority date: 2007-12-26
Filing date: 2008-11-10
Publication date: 2009-07-02
Also published as: JP2009154237A; JP5126500B2; CN101835565A; CN101835565B

Abstract

A spanner torque wrench capable of making a mark on a bolt or a nut while avoiding interference with members around the bolt and the nut. The spanner torque wrench has a spanner section (30) for tightening a nut etc., a torque wrench body (2) connected to the spanner section (30) via a toggle mechanism (4), a stamp body disposed outside the torque wrench body (2) so as to be able to advance and recede in the longitudinal direction of the torque wrench body and having a stamp section (6a) at the head of the stamp body, a start-up section displaced in association with displacement of the toggle mechanism (4) caused by movement of the mechanism, and a transmission section for moving the stamp body forward by converting the displacement of the start-up section into longitudinal forward movement of the start-up section. The direction of at least the head of the stamp section (6a) is changed from the longitudinal direction to the direction toward the mouth of the spanner section, and the head can move forward from the rear side of the spanner section (30) into the mouth (3) while being guided by a guide groove (32) or a guide hole, formed in the spanner section (30), so as to communicate with the mouth.

Description

Spanner type torque wrench with marking function

This invention relates to a spanner type torque wrench with a marking function in which a toggle mechanism operates when a tightening force on a bolt or nut reaches a predetermined value, and marking is automatically performed by a stamp.

In the spanner type torque wrench used for tightening bolts or nuts, when the tightening force reaches a predetermined value, the toggle mechanism operates to keep the tightening force constant so that the tightening force does not become excessive or insufficient. The preset type is known. By properly using the spanner type torque wrench, a nut tightening operation with a constant tightening force can be performed.

On the other hand, there are many cases where tightening completion marking is implemented as a measure for preventing bolts and nuts from being forgotten to be tightened in an assembly process in a production line or the like. Recently, a spanner type torque wrench with a marking function capable of automatically performing marking upon completion of tightening has been proposed (for example, see Patent Document 1).
In the spanner type torque wrench proposed in Patent Document 1, the movable body arranged in the spanner body is rotated by transmitting the displacement of the swinging motion linked to the operation of the toggle mechanism, and is provided at the tip of the movable body. The stamp is made by contacting the stamp from the side of the nut with a nut or a bolt tightened with the nut.

In addition to this, a guide hole is formed in the spanner part, and a marking lever is fixed to the arm part that swings by a toggle operation, and the movable side of the marking lever is inserted into the guide hole to perform marking. There has been proposed a spanner type torque wrench filled with a sponge-like material in which ink is soaked at the tip of the lever (see Patent Document 2). In this torque wrench, the marking lever is moved while being guided by the guide hole by the displacement of the arm rotated by the operation of the toggle mechanism, and marking is performed at the tip.
Japanese Utility Model Publication No. 64-9071 Japanese Utility Model Publication No. 5-41674

In the spanner type torque wrench shown in Patent Document 1, it is premised that marking is performed from the side with respect to a fastened body having a portion protruding from a place where a flare nut or spanner contacts. However, in the case of general bolts and nuts, there are many cases where there is no protruding portion, and thus there is a problem that marking may not be performed on the fastened body. Furthermore, in tightening work using a spanner head, there are many obstacles around the fastening body, and therefore it is difficult to perform marking by moving the stamp from the side of the nut as shown in Patent Document 1. In addition, if the stamp is always positioned around the fastening body, there is a problem that it is difficult to see the fastening portion during fastening work, and it is difficult to confirm the work.

Further, the spanner type torque wrench disclosed in Patent Document 2 has a problem that it is difficult to reliably perform marking because the marking lever moves only slightly in accordance with the movement amount of the arm portion.

The present invention has been made against the background of the above circumstances, and it is possible to perform the stamping operation by reliably moving the stamp body using the displacement associated with the operation of the toggle mechanism. An object of the present invention is to provide a spanner type torque wrench with a marking function capable of performing marking without being limited by space.

That is, among the spanner type torque wrenches with marking function according to the present invention, the first aspect of the present invention is that the toggle mechanism operates when the tightening force on the bolt or nut reaches a predetermined value, and the stamp mechanism automatically In the spanner type torque wrench with marking function for marking, a spanner part for tightening a bolt or a nut, a torque wrench body connected to the spanner part via the toggle mechanism, and the torque wrench body outside the torque wrench body. A stamp body that is arranged to be movable back and forth along the longitudinal direction of the wrench body, has a stamp part at the tip, an activation part that is displaced in conjunction with the displacement associated with the operation of the toggle mechanism, and the displacement of the activation part is A transmission part that converts the movement forward in the longitudinal direction to advance the stamp body, and at least the tip of the stamp part The side changes direction from the longitudinal direction to the mouth side of the spanner part, and is guided by a guide groove or a guide hole provided in the spanner part so as to communicate with the mouth, and from the rear side of the spanner part into the mouth It is possible to move forward.

The spanner type torque wrench with marking function according to the second aspect of the present invention is the first aspect of the present invention, wherein the stamp body is disposed on the outer surface side of the torque wrench body, And is housed in the guide groove so as to be able to move forward and backward.

A spanner type torque wrench with a marking function according to a third aspect of the present invention is the first aspect of the present invention, wherein the stamp body is disposed on an outer surface side of the torque wrench body, and the stamp portion is the spanner portion. Is housed in a guide hole or a guide groove provided so as to be inclined from the outside to the inside so as to be able to move forward and backward.

A spanner type torque wrench with a marking function according to a fourth aspect of the present invention is the third aspect of the present invention, wherein the stamp portion has a deformable deflecting portion, and the deflecting portion causes the mouth side of the spanner portion. The direction is changed and the guide hole or the guide groove is accommodated.

A spanner type torque wrench with a marking function according to a fifth aspect of the present invention is the above-described third aspect of the present invention, wherein the stamp portion changes its direction to the mouth side of the spanner portion by elastic deformation to the guide hole or the guide groove. It is stored.

The spanner type torque wrench with a marking function according to a sixth aspect of the present invention is the spanner type torque wrench according to any one of the first to fifth aspects of the present invention, wherein the stamp main body prevents the rotation of the stamp body during forward and backward movement. It is characterized by having.
It is characterized by.

According to the present invention, the displacement (sliding movement, rotational movement, etc.) of the starting part interlocked with the displacement accompanying the operation of the toggle mechanism is converted into the forward direction along the longitudinal direction of the torque wrench body by the transmission part. Due to the driving force, the stamp body moves smoothly along the longitudinal direction of the torque wrench body regardless of the size of the space around the bolt or nut. Along with the movement, the stamp portion whose direction is changed to the mouth side of the spanner portion is pressed against a nut or a bolt head portion for marking. The stamp main body may be returned to the initial position before the stamp by the movement of the activation part accompanying the opening of the toggle operation, and means for returning the stamp main body to the initial position (push-back means using urging force, etc.) May be provided.

Further, if the transmission part has a non-connected structure, the driving force can be smoothly transmitted between the displacement of the starting part and the movement of the stamp body.
For example, in the transmission unit, the activation magnet provided on the activation unit side and the stamp body are provided on the stamp body side, and the activation magnet moves by the activation unit so that mutual magnetic forces act on each other and the stamp body. If it has a stamp pressing magnet that moves forward, it is possible to reduce the mechanical contact portion and avoid failure due to wear or the like. In addition, since a large stamp displacement can be obtained by the magnet repulsion regardless of the displacement of the moving parts, the components can be simplified and miniaturized, and a strong stamp pressing force can be achieved by the magnet repulsion regardless of the movement of the moving parts. Therefore, the components can be simplified and downsized.

In addition, if the transmission section includes a cam provided on one side of the starting part and the stamp body and a cam follower provided on the other side, a driving force can be obtained without requiring a complicated mechanism. Can be transmitted, and a smooth stamping operation is always performed. In addition, the components can be simplified and downsized.

Further, the transmission unit is composed of a rotating body that rotates in conjunction with the displacement accompanying the operation of the toggle mechanism and a roller follower that is provided on the rotating body and contacts the stamp body, thereby transmitting the driving force with a simple structure. Thus, a smooth stamp operation can be performed.

That is, according to the spanner type torque wrench with a marking function of the present invention, the toggle mechanism operates when the tightening force on the bolt or nut reaches a predetermined value, and the marking function automatically performs marking with a stamp. In the spanner type torque wrench, a spanner portion for tightening a bolt or a nut, a torque wrench main body connected to the spanner portion via the toggle mechanism, and outside the torque wrench main body, in the longitudinal direction of the torque wrench main body A stamp main body having a stamp portion at the tip, an activation portion that is displaced in conjunction with a displacement associated with the operation of the toggle mechanism, and moving the displacement of the activation portion forward in the longitudinal direction. And a transmission portion for moving the stamp body forward, and at least the tip side of the stamp portion has the length The direction is changed from the direction to the mouth side of the spanner part, and it is guided by a guide groove or guide hole provided in the spanner part so as to communicate with the mouth, so that advancement from the rear side of the spanner part into the mouth is possible. Therefore, it is possible to move the stamp body along the longitudinal direction of the torque wrench body using the displacement accompanying the operation of the toggle mechanism, ensuring the amount of movement of the stamp part and enabling reliable stamp operation To do. In addition, since the stamp body is moved along the longitudinal direction of the torque wrench body, which is considered to have the least space restrictions, the space restrictions can be minimized, and whether or not there are protrusions on the fastening body There is an effect that the fastening body can be surely stamped. In addition, the stamp portion is not located in the space around the fastening body, and the fastening body has good visibility, so that it is possible to easily confirm the fastening work.

It is the top view which carried out the cross section which shows one Embodiment of this invention, the partially expanded plan view, and the partially expanded front view. Similarly, it is the side view which cut a part. It is sectional drawing which shows the example of a change of the rotation prevention structure of a stamp main body. It is the top view which carried out the cross section of some which shows other embodiment of this invention. Similarly, it is the side view which cut a part. It is a top view which shows a part of further another embodiment of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Spanner type torque wrench with marking function 2 Torque wrench main body 3 Head member 3a Spanner part 4 Toggle mechanism 5 Stamp pressing rod 5a Roller cam follower 6 Ink cartridge 6a Stamp part 7 Stamp holder 10 Horizontal link 11 Vertical link 12 Link fulcrum 13 Horizontal link 17a cam 30 spanner 31 port 32 guide groove 33 guide hole 62 joint 100 nut

(Embodiment 1)
Below, one Embodiment of this invention is described based on FIG.
FIG. 1 is a partial cross-sectional view showing the entire spanner type torque wrench 1 with a marking function, and a head member 3 is rotatably attached to a distal end side of a cylindrical torque wrench main body 2. The head member 3 has a spanner portion 30 at the tip, and the other end extends into the torque wrench body 2 and is connected to one side of a toggle mechanism 4 provided on the torque wrench body 2. The other side of the toggle mechanism 4 is connected to the torque wrench body 2 side.
When the specified torque is tightened, the toggle mechanism 4 releases the fixed state between the torque wrench main body 2 and the head member 3 by the toggle operation, and the head member 3 does not follow the tightening force applied to the torque wrench main body 2, and the head The member 3 side swings at a predetermined angle. At this time, a part of the head member 3 hits the torque wrench main body 2 and makes a sound so that the operator can know that the specified torque has been tightened. In addition, the structure of the toggle mechanism 4 is not limited to a specific thing as this invention, A well-known thing can be used.

As shown in FIG. 2, a lateral link 10 extending outward from one side and projecting from the torque wrench body 2 is connected and fixed to the end of the head member 3 on the toggle mechanism 4 side. One end of the link 11 is rotatably supported. The vertical link 11 is pivotally fixed to the link main body 2 at a link fulcrum 12 on the side close to the horizontal link 10, and is linked to the other end side of the vertical link 11 so as to cross the longitudinal direction of the link main body 2. A lateral link 13 positioned on the main body 2 is rotatably supported. The lateral link 13 is slidably held by a bush 14 provided on the link main body 2, and the end side is located at a distance from the support plate 16 provided at one end on the link main body 2. ing. A link return spring 15 is disposed between the end of the lateral link 13 and the support plate 16 so as to be contractible.

In the above structure, when the head member 3 swings, the toggle mechanism 4 side end of the head member 3 moves relatively outward with respect to the torque wrench body 2 as shown in FIG. The vertical link 11 is rotated by the horizontal link 10 connected thereto so that the horizontal link 10 side moves outward with the link fulcrum 12 as the center, and the other end side of the vertical link 11 moves inward. While the horizontal link 13 is held by the bush 14 by the rotation of the vertical link 11, it slides inward against the elastic force of the link return spring 15. At this time, when the horizontal link 10 moves the distance L1, the displacement is amplified according to the ratio of the rotation radii L2 and L3 to the link fulcrum 12 at both ends of the vertical link 11 (lever ratio L2: L3), and the horizontal link 13 is L4 (L4>). L1) is moved.

When the toggle mechanism 4 is opened, the end of the head member 3 on the toggle mechanism 4 side moves inward relative to the torque body 2 so as to return to the initial position, and the lateral link 10 is moved accordingly. Move inward. Along with this movement, the vertical link 11 rotates and the horizontal link 13 is slid outward. At this time, the elastic force of the link return spring 15 acts, and the horizontal link 13 is slid smoothly. That is, the said horizontal link 10, the vertical link 11, and the horizontal link 13 are corresponded to the starting part of this invention displaced in conjunction with the displacement accompanying the operation | movement of a toggle mechanism.
Further, a cam 13 a having a slope protruding forward in the longitudinal direction of the link body 2 toward the inner side of the end portion is formed on the front side of the end portion of the horizontal link 13. The cam 13a constitutes a part of the transmission portion of the present invention.

An ink cartridge 6 is disposed on the outer surface side of the torque wrench main body 2 along the longitudinal direction of the torque wrench main body 2 on the front side of the starting portion, and is held by the stamp holder 7 so as to be movable in the front-rear direction. ing. The stamp holder 7 is fixed to the outer surface of the torque wrench body 2. A marking pressing rod 5 is attached to the rear side of the ink cartridge 6, and a roller cam follower 5 a in contact with the cam 13 a is provided at the rear end of the marking pressing rod 5. The cam 13a and the roller cam follower 5a constitute a transmission portion of the present invention, and the transmission portion has a non-connected structure.

Further, a stamp portion 6 a to which ink is supplied from the ink cartridge 6 is provided in front of the ink cartridge 6, and protrudes from the tip of the stamp holder 7 and extends to the vicinity of the spanner portion 30.

The stamp portion 6a is covered with a stamp cover 6b that protects the stamp portion 6a and prevents ink from drying. The stamp cover 6b is preferably made of a hard film or metal that is different from the material of the stamp portion 6a. . The stamp portion 6a is bent at the front end at approximately 90 degrees, and the stamp portion 6a is exposed on the front side of the bent portion without providing the stamp cover 6b. Further, in the spanner portion 30, a guide groove 32 communicating with the opening 31 of the spanner portion 30 is formed in the front-rear direction so that the bent portion of the stamp portion 6a is accommodated, and the stamp portion 6a is formed in the guide groove. You can move forward and backward according to 32. In this stamp body, since the stamp body and the marking place are separated from each other, it is necessary to offset the stamp portion, and a rotation stopping mechanism is necessary so that the stamp body does not turn. Although the stamp portion 6a can be moved forward and backward, the rotation of the stamp portion 6a is restricted by the stamp cover 6b coming into contact with the guide groove 32 when the stamp portion 6a tries to rotate, thereby preventing the stamp portion 6a from rotating. That is, the stamp cover 6b serves as a detent structure.

In the state where the ink cartridge 6 is in the initial position where marking is not performed, the rear shoulder portion of the ink cartridge 6 abuts against the inner surface on the rear side of the stamp holder 7, and further rearward movement is restricted. Further, a retractable stamp push-back spring 8 is disposed between the front shoulder portion of the ink cartridge 6 and the front inner surface of the stamp holder 7 so that the ink cartridge 6 is in the initial position. It is fast. The marking pressing rod 5, the ink cartridge 6, the stamp portion 6a, the stamp cover 6b, and the stamp holder 7 constitute a stamp body of the present invention.

Next, the operation of the spanner type torque wrench 1 with the marking function will be described.
A torque for tightening is preset in the spanner type torque wrench 1 with a marking function, and a nut 100 for tightening is fitted into the mouth 31 of the spanner part 30.
Since the toggle mechanism 4 is opened at the initial stage, the end of the head member 3 on the side of the toggle mechanism 4 is positioned relatively inside the torque wrench body 2 as shown in FIG. is doing. As a result, the lateral link 13 is displaced outward from the torque wrench body 2 as an initial position, and the cam 13a provided on the lateral link 13 is in a position where it does not press the roller cam follower 5a.
Further, the ink cartridge 6 is biased rearward by the stamp push-back spring 8 and is in the initial position, and the tip of the stamp portion 6a is positioned behind the port 31 in the guide groove 32 as shown in FIG. ing.

When the nut 100 is tightened via the torque wrench main body 2 in the above state, the nut 100 is rotated by the spanner unit 30 until the preset torque is reached. When the tightening force reaches a preset torque, the toggle mechanism 4 operates and the head member 3 swings with respect to the torque wrench body 2. As the head swings, the end of the head member 3 on the side of the toggle mechanism 4 moves outward relative to the torque wrench body 2, and the horizontal link 10, the vertical link 11, and the horizontal link 13 slide as described above. Alternatively, it is rotated and the displacement amount is amplified as described above, and the cam 13a formed on the lateral link 13 slides to the roller cam follower 5a side. By this movement, the roller cam follower 5 a is pushed forward by the inclined shape of the cam 13 a, and the stamp pressing rod 5 and the ink cartridge 6 move forward against the elastic force of the stamp pushing back spring 8. As the ink cartridge 6 advances, the leading end side of the stamp portion 6a at the leading end slides while being guided in the guide groove 32 and stopped rotating, and finally the nut 100 is marked from behind in the mouth 31.

When the tightening via the torque wrench body 2 is stopped, the toggle mechanism 4 is opened and the head member 3 swings back. As a result, the end of the head member 3 on the toggle mechanism 4 side returns to the initial position with respect to the torque wrench body 2, and the cam using the elastic force of the link return spring 15 via the horizontal link 10, the vertical link 11, and the horizontal link 13. 13a moves to the side. As a result, the forward drive force for the roller cam follower 5a is lost. The ink cartridge 6 is pushed back by the elastic force of the stamp push-back spring 8 to return to the initial position, and the leading end of the stamp portion 6 a is in a standby state in the guide groove 32.
By the above operation, a large stroke can be given to the marking mechanism by using a small displacement of the swinging operation without requiring a special mechanism without almost any space limitation. In addition, the visibility around the nut is good and the work can be easily confirmed.

(Embodiment 2)
In the above embodiment, the stamp main body is prevented from being rotated by the stamp cover. However, a rotation preventing structure in which rotation is prevented by the cooperation of the shape of the ink cartridge and the shape of the stamp holder may be employed.
In FIG. 3A, the cross-sectional shape of the ink cartridge 60 is non-circular, and the storage hole 70a of the stamp holder 70 for storing the ink cartridge 60 is also non-circular so that the stamp body including the ink cartridge is prevented from rotating. Yes.
In FIG. 3B, the ink cartridge 61 and the stamp holder 71 are each provided with an uneven shape along the longitudinal direction of the torque wrench body, and the ink cartridge 61 can be moved in the longitudinal direction by engaging with each other. At the same time, the stamp body including the ink cartridge is prevented from rotating. In this figure, the convex portion 61a is formed on the outer peripheral surface of the ink cartridge 61 and the concave groove 71a is formed in the storage hole of the stamp holder 71. However, in the present invention, the position and number of the concave and convex portions are arbitrary, and the concave and convex portions are reversed. You may do.

(Embodiment 3)
In each of the above embodiments, the stamp main body is described as being provided on the outer surface of the torque wrench main body 2. However, as the present invention, the stamp main body may be provided on the outer surface of the torque wrench main body 2. The embodiment will be described with reference to FIGS. In addition, about the structure similar to the said Embodiment 1, the same code | symbol is attached | subjected and the description is abbreviate | omitted or simplified.

Also in this embodiment, as in the above-described embodiment, as shown in FIGS. 4 and 5, the horizontal link 10 is attached to the end of the head member 3 on the toggle mechanism 4 side. One end of the vertical link 11 that is pivoted at is pivoted. One end of the horizontal link 13 is fixed to the other end of the vertical link 11. The lateral link 13 is axially fixed by a bush 14 so as to be slidable. The horizontal link 10, the vertical link 11, and the horizontal link 13 correspond to an activation unit of the present invention that is displaced in conjunction with the displacement accompanying the operation of the toggle mechanism 4.

In this embodiment, a cam member 17 that protrudes to the side of the torque wrench main body 2 and is bent downward is provided on the distal end side of the lateral link 13, and the torque wrench main body 2 is provided on the front side of the cam member 17. The cam 17a which has the inclined shape which protrudes ahead in the longitudinal direction of the link main body 2 is formed so that it may be located in the side. A link return spring 18 is interposed between the bush 14 and the cam member 17, and an end portion is fixed to each. The link return spring 18 is interposed in a tensioned state so as to return the lateral link 13 to the initial position, and urges the cam member 17 toward the lateral link 13.

An ink cartridge 6 is disposed along the longitudinal direction of the torque wrench body 2 on the outer surface side of the torque wrench body 2 on the front side of the cam member 17 so as to be movable in the front-rear direction with respect to the stamp holder 7. Is retained. The stamp holder 7 is fixed to the outer surface of the torque wrench body 2. A marking pressing rod 5 is attached to the rear side of the ink cartridge 6, and a roller cam follower 5 a that is in contact with the cam 17 a is provided at the rear end of the marking pressing rod 5. The cam 17a and the roller follower 5a constitute a transmission portion of the present invention, and the transmission portion has a non-connected structure.

In addition, a stamp portion 6 a to which ink is supplied from the ink cartridge 6 is provided in front of the ink cartridge 6, protrudes from the tip of the stamp holder 7, and changes its direction from the longitudinal direction of the torque wrench body 2. It extends toward the mouth 31 of the spanner 30. The stamp portion 6a is covered with a stamp cover (not shown) having bending resistance and wear resistance, and is elastically deformable.

Further, in the spanner part 30, a guide hole 33 communicating with the port 31 from the side of the spanner part 30 is formed so that the stamp part 6a is inserted, and the stamp part 6a is formed in the guide hole 33. Can move forward and backward.
The marking pressing rod 5, the ink cartridge 6, the stamp portion 6a, and the stamp holder 7 constitute a stamp body of the present invention.

In the embodiment having the above-described configuration, when the toggle mechanism 4 is opened in the initial stage, the end of the head member 3 on the toggle mechanism 4 side is positioned relatively inside the torque wrench body 2. As a result, the lateral link 13 is offset from the torque wrench main body 2 as an initial position, and the roller cam follower 5a is not pushed forward by the cam 17a. It is biased rearward by the push-back spring 8 and is in the initial position. At this time, the tip of the stamp portion 6a is in a standby state positioned in the guide hole 33.

When the nut 100 is tightened via the torque wrench body 2 and the tightening force reaches a preset torque, the toggle mechanism 4 operates and the head member 3 swings relative to the torque wrench body 2. Along with this swinging operation, the horizontal link 10 and the vertical link 11 slide or rotate as described above, and the horizontal link 13 slides while amplifying the amount of displacement. Along with this movement, the cam member 17 connected to the lateral link 13 moves sideways, the cam 17a formed on the cam member 17 slides toward the roller cam follower 5a, and the roller cam follower 5a is moved by the inclined shape. Push forward. Along with this, the stamp pressing rod 5 and the ink cartridge 6 move forward against the elastic force of the stamp pressing back spring 8. With the advance of the ink cartridge 6, the stamp portion 6 a at the tip of the ink cartridge 6 advances in the guide hole 33, reaches the opening 31, and performs marking on the rear side of the nut 100.

When the tightening via the torque wrench body 2 is stopped, the toggle mechanism 4 is released and the head member 3 swings back, and the elasticity of the link return spring 18 via the horizontal link 10, the vertical link 11, and the horizontal link 13 is restored. The cam 17a moves inward using force. As a result, the forward drive force for the roller cam follower 5a is lost. The ink cartridge 6 is pushed back by the elastic force of the stamp push-back spring 8 and moves backward in the guide hole 33 to return to the initial position.
In this embodiment, since the stamp main body is arranged on the side surface side of the torque wrench main body, it is effective when interference with other parts and visibility during tightening are particularly bad, and the operability is further improved.
In order to make the stamp portion smoothly move back and forth within the guide hole 33, a guard ring can be added to the stamp cover, whereby wear of the stamp cover can be suppressed and the stamp diameter can be increased.

(Embodiment 5)
In the above embodiment, the stamp portion 6a is elastically deformed so that the guide hole 33 can be moved forward and backward. In the fifth embodiment, as shown in FIG. 6, a deformable joint 62 is provided as a deflecting part in the middle of the stamp part 6a. The joint 62 preferably has a cover shape in order to prevent ink drying of the stamp portion 6a. For example, a bellows-shaped cover can be used as the joint. In this embodiment, since the joint 62 can be deformed, when the ink cartridge 6 moves back and forth, the joint 62 is deformed and the stamp portion 6a changes its direction so that the guide hole 33 smoothly moves back and forth. can do. When the amount of deformation of the joint is small, the diameter of the guide hole 33 can be increased to absorb the change in angle during the stroke. In addition, on the front and rear sides of the joint 62, the stamp portion 6a can be formed in a straight shape, and metal can be used for the stamp cover that covers the straight portion. Abrasion can be improved.

The present invention has been described above based on the above embodiment, but the present invention is not limited to the content of the above embodiment, and can be appropriately changed without departing from the present invention. It is.

Claims

In the spanner type torque wrench with a marking function that performs the toggle mechanism automatically when the tightening force on the bolt or nut reaches a predetermined value and automatically performs marking with a stamp,
A spanner for tightening bolts or nuts, a torque wrench main body connected to the spanner via the toggle mechanism, and to be able to move forward and backward along the longitudinal direction of the torque wrench main body. A stamp body having a stamp portion disposed at a tip thereof, an activation portion that is displaced in conjunction with a displacement associated with the operation of the toggle mechanism, and converting the displacement of the activation portion into a movement forward in the longitudinal direction; A guide that is provided in the spanner so that at least the front end side of the stamp portion changes direction from the longitudinal direction to the mouth side of the spanner portion and communicates with the mouth. A spanner-type torque wrench with a marking function, wherein the spanner-type torque wrench is guided by a groove or a guide hole and can be advanced from the rear side of the spanner into the mouth.
The stamp main body is disposed on the outer surface side of the torque wrench main body, and a tip end of the stamp portion is bent inward and is housed in the guide groove so as to be able to move forward and backward. The spanner type torque wrench with a marking function according to claim 1.
The stamp body is disposed on the outer surface side of the torque wrench body, and the stamp portion can move back and forth in a guide hole or a guide groove provided in the spanner portion so as to be inclined from the outside to the inside. The spanner type torque wrench with a marking function according to claim 1, wherein the spanner type torque wrench has a marking function.
The stamp part has a deformable deflecting part, and the deflecting part changes the direction to the mouth side of the spanner part and is accommodated in the guide hole or the guide groove. 3. A spanner type torque wrench with marking function according to 3.
4. The spanner type torque wrench with marking function according to claim 3, wherein the stamp portion is stored in the guide hole or the guide groove with its direction changed to the mouth side of the spanner portion by elastic deformation.
The spanner type torque wrench with a marking function according to any one of claims 1 to 5, wherein the stamp body has a detent structure for preventing the stamp body from rotating when moving forward and backward.