JP4585932B2 - Tightening tool with marker - Google Patents

Description

  The present invention relates to a torque wrench with a marker, and more particularly to a torque wrench that can be marked with a bolt that can be tightened to prevent forgetting to tighten and check looseness, or a marker-tightening tool such as a torque driver.

  Generally, when tightening multiple bolts, a marker-equipped torque wrench clarifies whether all bolts have been tightened by automatically marking the bolts that have been tightened until the set torque value is reached. It is provided to prevent forgetting (Patent Document 1).

  The configuration of this torque wrench with marker is shown in FIGS.

  The torque wrench body 31 includes a tube 33 with a toggle mechanism 32 built therein, a head 35 supported by a support shaft 34 attached to the tip of the tube 33, and a handle 36 attached to the tail end of the tube 33. have.

  The torque wrench main body 31 is provided with a marker driving mechanism 37 that interlocks and drives the marker by the operation of the toggle mechanism 32. As shown in FIG. 16, 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.

  The structure of the marker mechanism 43 will be described below. Reference numeral 46 denotes a ratchet cylinder having a ratchet provided in the head 35, and the upper end of the cylindrical adapter 49 is coupled and held by a coupling screw 50 to a hexagonal shaft portion formed at the lower end of the ratchet cylinder 46. 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 that is inserted into the cylindrical adapter 49 of the latitudinal tube 46, and the lower end of the marker rod holds, for example, a marker impregnated with colored ink in a sponge. The case is held.

  Reference numeral 61 denotes a spring that is interposed between the upper end of the socket 51 and a retaining ring 62 provided on the cylindrical adapter 49 and constantly pushes down the socket 51. 63 is a nut and 64 is its bolt.

  Therefore, when the nut 63 is screwed by the torque wrench main body 31 provided with the marker mechanism 43, the socket 51 is fitted to the nut 63 as shown in FIG. Are 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 mechanism 32 in the torque wrench body 1 operates. To do.

When the toggle mechanism 32 operates, the head 35 moves counterclockwise in FIG. 14 with the support shaft 34 as a fulcrum, so that the link 39 moves clockwise with the support pin 38 as a fulcrum in FIG. To turn. By the operation of the link 39, the lever 41 whose one end is supported by the lever fulcrum shaft 65 is pushed down as shown by the chain line in FIG. The head 44 is pushed down. When the marker head 44 is pushed down, the marker rod is pushed down against the spring pressure of the spring, and the marker attached to the lower end of the marker rod is pushed against the tip of the bolt 64 and screwed. Marking is given to indicate that tightening has been completed.
Japanese Patent Laid-Open No. 08-090442

  Such a marker-equipped torque wrench is configured to be fitted and fastened to the head of a nut or bolt that is a body to be fastened using a socket formed in a cylindrical shape. The head surface can be marked.For example, it is suitable for hexagon socket bolts, screws with plus or minus grooves formed in the head, bolts with specially shaped holes in the bolt head, etc. Cannot be marked.

  Moreover, in the conventional torque wrench with a marker, since the marking is applied to the tip of the bolt or the head surface of the bolt from the viewpoint of simply preventing forgetting to tighten, as a marking for confirming the looseness of the bolt. The function was not fulfilled.

  The present invention has been made in view of such a conventional viewpoint, and an object of the present invention is to provide a marker-equipped tightening tool capable of providing a marking capable of preventing forgetting to tighten and confirming looseness of a member to be fastened such as a bolt. .

According to a first configuration of the marker-equipped tightening tool that achieves the object of the present invention, a support shaft is provided at an angle from the fixed tube portion, and the fixed tube portion A marking device that applies a marking to a portion in which the marker body on the front end side of the fixed cylinder portion protrudes forward from the fixed cylinder portion and is in contact with the marker body by pressing a push button disposed on the rear end side in the axial direction; The marking device is mounted via a fixed block member having a shaft holding portion for holding the supporting shaft of the marking device, and the rear end side of the marking device is pushed in by the operation of toggle means that operates when a set torque value is reached. A tightening tool main body provided with a marker driving means and a screw or a bolt for fastening a body to be fastened are engaged with a head of a screwing member, and an axis around the axis applied from the tightening tool main body. Rolling by a torque transmitting member fastening for transmitting the tightening torque to該螺case member, the shaft holding portion, rotating the support shaft of the marking device in parallel with the axial direction of the tightening torque transmitting member capable to hold, the fixed tubular portion mounted inclined relative to the axial direction of the torque transmitting member said clamping, the intersection of the pre-Symbol marker body said threaded member head side and the clamp object member attached via the locking means in a direction in contact with portions of said locking means, said support shaft against the shaft holding section, releasing the rotation around the axis of movement and the support shaft in the axial direction of the support shaft It is possible to lock.

According to a second configuration of the marker fastening tool that achieves the object of the present invention, a support shaft is provided at an angle from the fixed tube portion, as defined in claim 2, A marking device that applies a marking to a portion in which the marker body on the front end side of the fixed cylinder portion protrudes forward from the fixed cylinder portion and is in contact with the marker body by pressing a push button disposed on the rear end side in the axial direction; The marking device is mounted via a ring-shaped fixing portion having a shaft holding portion for holding the supporting shaft of the marking device, and the rear end side of the marking device is operated by a toggle means that operates when a set torque value is reached. A tightening tool main body provided with a marker driving means for pushing in through a ring-shaped pressing plate and a head of a screwing member such as a screw or a bolt for tightening a body to be tightened, and the tightening tool Book A tightening torque transmitting member that transmits a tightening torque to the screwing member by rotation about an axis applied from the outer periphery, and an outer cylinder portion that is disposed on an outer periphery of the tightening torque transmitting member and is fixed to the tightening tool body If has the shaft holding portion, a support shaft rotatably held in said marking device in parallel with the axial direction of the tightening torque transmitting member, the fixed cylinder portion of the tightening torque transmitting member in a direction attached inclined with respect to the axial direction, before Symbol marker member is in contact at the intersection between the head side and the clamp object member of the screw member, said support shaft relative to said shaft holding portion The support plate is attached via locking means for releasably locking the movement of the support shaft in the axial direction and the rotation of the support shaft about the axis, and the pressing plate and the fixing portion are externally mounted on the outer cylinder portion, and the pressing The plate is integrally tightened with the fixing portion. While rotatable about the axis of the reach member, characterized in that it can be moved in the axial direction of the tightening torque transmitting member.

According to a third configuration of the marker-equipped tightening tool that achieves the object of the present invention, as described in claim 3, in the second configuration described above, the lower end of the fixed portion is the fastening member . The fixing member which contacts the upper surface and supports the said clamping tool main body is attached.

According to a fourth configuration of the marker-tightening tool that realizes the object of the present invention, in any one of the above-described configurations, the lock unit is configured to have a predetermined angle around the support shaft. And a first lock pin and a second lock pin that are inserted in the support shaft along the radial direction and spaced apart in the axial direction, and projecting by a spring biased outward in the radial direction. A recess formed in the inner peripheral surface of the shaft holding portion along the circumferential direction, and a pin hole facing the recess of the shaft holding portion, and the second lock above the first lock pin. A lock pin is disposed, the first lock pin and the distal end of the second lock pin are engaged with the recess, and the pin hole is disposed in alignment with the distal end of the first lock pin; Push the first lock pin into the support shaft with the unlocking pin passed through Characterized in that the capacity.

According to a fifth configuration of the marker-tightening tool that realizes the object of the present invention, in the fourth configuration described above, the first lock pin is supported by the lock release pin. In a state where the support shaft is shifted in the axial direction while being pushed into the holding shaft, the first lock pin is retracted out of the recess, and the second lock pin contacts the side wall surface of the recess. The rotation of the support shaft around the axis is allowed.

According to a sixth aspect of the marker tightening tool for realizing the object of the present invention, in any one of the above-described structures, the tightening torque transmitting member is connected to the tightening tool main body. The tip position can be adjusted along the axial direction .

According to a seventh configuration of the marker tightening tool that realizes the object of the present invention, in any one of the above- described configurations, the tightening tool main body is a torque wrench main body. To do .

According to the inventions according to claims 1 and 2 of the present application, marking is performed on the side surface of the head portion of the screwing member such as a bolt or a screw and the tightened body by the marker body of the marking device. Since it functions, it is possible not only to simply prevent forgetting tightening as in the prior art, but also to check the looseness of screwed members such as screws or bolts, thereby improving reliability.

In addition, when not in use, the marking device is released from the constant contact with the marker driving means by unlocking the locking means and rotating the marking device, and an unreasonable force is applied from the marker driving means to the marking device. In addition to reducing the failure of the marking device, the marker body can be easily covered with a cap.

Further, as in the case of the invention according to claim 5, like the first lock pin, the marking device is moved by moving the support shaft in the axial direction while pushing the second lock pin into the support shaft by the lock release pin. becomes detachable from the tool body tightening, it can be easily performed refilling operation of ink markings device.

Furthermore, as in the invention according to claim 6, the tip position of the tightening torque transmitting member such as a hexagon wrench can be adjusted along the axial direction with respect to the tightening tool body such as a torque wrench. there there screw has become possible to adjust so as to be in contact at the intersection of the sides of the head of the screw member such as a bolt and the fastened member.

Further, according to the invention of claim 2, even if the location that can not be marking around the head of the screw member of the screw or bolt or the like, changing the position of the marking device marking possible position Can do.

Furthermore, according to the invention according to claim 3 , even if there is a place where the marking cannot be performed around the head of the screwing member such as a screw or a bolt, the position of the marking device is changed to a markable position. can be, moreover when for example as used in this position only, since support in contact with the tool body tightening down end on the upper surface of the fastener of the fixing member,該締with the tool body during tightening operation Can be prevented from tilting.

(First embodiment)
1 to 11 show a first embodiment of the present invention.

  1 is a front view showing a partially broken cross section of a torque wrench with a marker, FIG. 2 is a diagram showing a marking state by the torque wrench with a marker of FIG. 1, FIG. 3 is a cross sectional view of the marking device of FIG. FIG. 5 is a diagram showing an operation for putting a cap on the marking device of FIG. 3, FIG. 5 is a diagram showing a state where the marking device of FIG. 3 is removed from the torque wrench body without a tool, and FIG. FIG. 7 is a cross-sectional view taken along the line AA of FIG. 6, showing the positional relationship between the push lock and the fitting portion when the marking device is supported by the torque wrench body in a locked state. FIG. 8 is a cross-sectional view taken along the line AA in FIG. 6, and is a diagram showing a positional relationship between a push lock that performs unlocking and a fitting portion so that the marking device is primarily lowered with respect to the torque wrench body, 9 is shown in FIG. FIG. 10 is a cross-sectional view taken along the line AA, showing the positional relationship between the push lock and the fitting portion when the marking device is rotated 90 degrees counterclockwise in the state shown in FIG. FIG. 10 is a cross-sectional view taken along arrow A and shows a state where the marking device is pulled out from the state shown in FIG. 9;

  In FIG. 1, the same members as those shown in FIGS. 14 to 16 are denoted by the same reference numerals, and description thereof is omitted.

  In the present embodiment, the bolt to be tightened is a hexagon socket head bolt B, and when this bolt B is fastened to the tightened body C as shown in FIG. A mark (hereinafter referred to as an alignment mark) m is marked on the upper surface of the clamped body C by a marking device M.

  In FIG. 1, the torque wrench body 1 has a toggle mechanism (not shown) disposed in a tube 33 as in the conventional example, and the head 2 connected to the toggle mechanism swings on the tube 33 via a support shaft 34. It is attached as possible. When this toggle mechanism is actuated, the lever portion 2a of the head 2 is swung, the marker driving mechanism 37 operates in the same manner as the conventional example shown in FIGS. Tilt to move downward. The tube 33 will be described below with the side on which the lever 41 is disposed as the upper surface and the opposite surface as the lower surface.

  In the present embodiment, a long hole 2b is formed in the lever portion 2a of the head 2 along the swinging direction of the head 2, and the marker operating lever 3 passes through the long hole 2b with a gap, One end of the marker operating lever 3 is connected to the tip of the lever 41 at a position above the upper surface of the tube 33. The other end of the marker operating lever 3 penetrates the lower surface of the tube 33 and is connected to the marker pressing lever 4. One end of the marker pressing lever 4 is slidably connected to the lower surface side of the tube 33 via a support shaft 4a, and a pressing roller 4b is attached to the other end. Therefore, when the lever 41 is tilted downward by the operation of the toggle mechanism, the marker operating lever 3 is lowered, the marker pressing lever 4 is rotated clockwise in FIG. 1 with the supporting shaft 4a as a fulcrum, and the pressing roller 4b. Moves from the position of the solid line to the marker operating position indicated by the broken line. At that time, by moving the position where the marker operating lever 3 is connected to the marker pressing lever 4 closer to the support shaft 4a, the movable stroke of the pressing roller 4b can be longer than the moving stroke of the marker operating lever 3, and the movement of the pressing roller 4b. Stroke can be increased.

  The tip of the head 2 is formed in a ring shape having a flange portion 2c on the upper surface side, and a hexagon stick wrench guide tube 5 formed in a cylindrical shape inside the flange portion 2c is mounted so as not to rotate around the axis. Has been. For example, the inner periphery of the flange portion 2c is formed in a hexagonal shape, and the external shape of the hexagon stick wrench guide tube 5 fitted to the flange portion 2c is a hexagonal shape, thereby preventing rotation around the axis in the fitted state. Is done.

  The hexagonal bar wrench guide cylinder 5 has an inner peripheral shape formed into a hexagonal shape, and a hexagonal bar wrench as a tightening torque transmitting member inserted into the hexagonal bar wrench guide cylinder 5 (the outer shape is formed in a hexagonal shape). On the other hand, the rotation around the axis is impossible and the movement is possible in the axial direction.

In the present embodiment, the hexagon stick wrench 6 inserted into the hexagon stick wrench guide cylinder 5 can be adjusted in the protruding length from the tip of the hexagon stick wrench guide cylinder 5 by turning the allowance adjusting screw 7. The head allowance adjusting screw 7 passes through the shaft hole 8a of the screw support base 8 screwed to the upper end inner diameter portion of the hexagon wrench guide cylinder 5, and the head portion 7a is supported. Further, a retaining cap 9 is screwed onto the upper portion of the screw support 8 to prevent the head 7a of the allowance adjusting screw 7 from moving upward. A jig hole 9 a is formed in the retaining cap 9, and the jig R shown in FIG. 11 is inserted into the head 7 a of the allowance adjusting screw 7 through the jig hole 9 a, so that the allowance adjusting screw is inserted. 7 can be rotated clockwise and counterclockwise.

Incidentally, the jig holes 10a provided in the marker-driving mechanism cover 10, insert the jig R Here, as shown in FIG. 11, the jig R through the jig hole 9a of the stopper cap 9 Projection The head 7a of the adjustment screw 7 can be reached. The jig hole 10a is usually closed by a rubber lid member 10b.

The allowance adjusting screw 7 has a threaded portion formed on the outer periphery of the lower end portion, and is screwed into a screw hole 6 a formed from the upper end portion side of the hexagon stick wrench 6. Accordingly, as shown in FIG. 11, when the allowance adjustment screw 7 is rotated by the jig R, the movement of the allowance adjustment screw 7 is restricted in the axial direction. 5, and advances and retreats with respect to the hexagon wrench guide tube 5. 11A shows a state in which the jig R is rotated clockwise to extend the hexagonal bar wrench 6, and FIG. 11B shows a state in which the jig R is rotated counterclockwise to rotate the hexagonal bar wrench 6. The state which shrunk is shown, respectively.

  Since the above hexagonal bar wrench guide tube 5 is configured to be fitted in the flange portion 2c of the head 2 along the axial direction, the hexagon stick wrench guide tube 5 will fall off as it is. It fixes to the surface opposite to the part 2c via the fixing bolt 12, prevents the hexagon stick wrench guide tube 5 from moving downward in the axial direction, prevents the hexagon stick wrench guide tube 5 from falling off, and will be described later. It also serves as a support for M.

  The fixed block member 11 has an upper plate portion 11a that fits into a hole formed in a lower portion of the flange portion 2c of the head 2, and an outer side through which a hexagonal bar wrench guide tube 5 that extends downward from the upper plate portion 11a is inserted. The cylindrical portion 11b is composed of a shaft holding portion 11c that is provided integrally with the lower end portion of the outer cylindrical portion 11b and holds the support shaft 102 of the marking device M. A hexagon is formed around the upper end surface of the outer cylindrical portion 11b. The hexagon stick wrench guide tube 5 is fixed without coming off from the head 2 when the upper end large diameter portion 5a of the rod wrench guide tube 5 abuts.

  Both the outer cylinder part 11 b and the shaft holding part 11 c are formed with holes extending in the vertical direction, and the axial direction of these holes is perpendicular to the tube 33.

  The shaft holding portion 11 c is disposed toward the marker pressing lever 4 side, and the marking device M is disposed obliquely between the marker pressing lever 4 and the tip of the hexagon stick wrench 6.

  When the marking device M is disposed obliquely between the marker pressing lever 4 and the tip of the hexagon stick wrench 6, the hexagon socket head bolt B is tightened as a torque wrench and the counter mark m shown in FIG. This is a case of use attached to the side surface of the part and the surface of the body C to be fastened. As will be described later, it can be rotated 90 degrees around the axis after being slightly lowered downward as shown in FIG. Further, as shown in FIG. 5, the marking device M can be detached from the torque wrench body 1.

  The marking device M has an external appearance structure in which a support shaft 102 is provided upward with an angle α (0 degree <α <90 degrees) from a fixed cylindrical portion 101 formed in a cylindrical shape. Is attached to the shaft holding portion 11 c of the fixed block member 11.

  As shown in FIG. 3, when the marking device M pushes the push button 103 protruding rearward from the rear end of the fixed cylinder portion 101 toward the front, the push rod 104 pushes the marker member 105 forward, and the marker The marker body 105a of the member 105 is pressed toward a portion where the side surface of the head of the hexagon socket head bolt B and the fastened body C intersect, and the ink that has permeated into the marker body 105a is the head of the hexagon socket head bolt B. It is applied to the side surface of the part and the surface of the fastened body C, and the alignment mark m is marked.

  Since the marking device M is disposed to be inclined with respect to the hexagon stick wrench 6, the marker body 105a of the marking device M is not necessarily the side of the head of the hexagon socket head bolt B depending on the length to the tip of the hexagon stick wrench 6. There is a case where the material is not extruded at a portion where the member and the fastened body C intersect. For this reason, as shown in FIG. 11, the marker body 105 a can be pushed out to the intersecting portion of the head side surface of the hexagon socket head bolt B and the body C to be fastened by adjusting the allowance of the hexagon stick wrench 6. become.

  The marker member 105 is formed in a different diameter shape having a small diameter at the front end side and a large diameter at the rear end side, and the rear end flange portion 105c of the large diameter rear end portion 105b and the peripheral edge of the front end opening of the fixed cylinder portion 101 It is biased forward by the spring force of the spring 106 disposed between the two. At that time, since the inner diameter of the distal end opening of the fixed cylinder portion 101 through which the smaller diameter distal end portion 105d passes is formed, the distal end portion 105d can change its posture while being biased by the spring 106, and the marker body 105a Even if a component force acts in a different direction in which the hexagon socket head bolt B is pushed by the frictional force when contacting the side surface of the head of the hexagon socket head cap screw B, the direction of the marker body 105a can be freely changed correspondingly. The ink for a marker can be reliably apply | coated to the side surface of the head of the hexagon socket head bolt B, and the surface of the to-be-fastened body C.

  The marker member 105 is configured as an ink tank, and ink can be replenished by removing the rubber stopper 105d at the rear end. Further, a valve body 105e is attached to the marker body 105a at the tip in the rearward direction. When the marker body 105a and the valve body 105e are retracted integrally against the spring force of the spring 105f, the valve seat 105g is opened, and the ink Passes between the valve seat 105g and the valve body 105e and soaks into the marker body 105a.

  Further, the push button 103 has a push plate 107 urged forward by a spring 106 inside so as to be movable in the front-rear direction, and is screwed to the rear end portion of the sleeve member 108. As for the sleeve member 108, the front part is formed in the circumferential direction, and the projection part 109 has a fixed space | interval.

  An intermediate support member 110 is disposed between the sleeve member 108 and the marker member 105, and the intermediate support member 110 has a distal end abutting against the rear end of the marker member 105 and moves the marker member 105 backward. To regulate. In addition, a pressing sleeve 111 that is screw-coupled to the distal end portion of the push rod 104 is fitted at the center portion of the intermediate support member 110 with a backlash, so that even if the orientation of the marker member 105 changes, It can be followed. Further, between the sleeve member 108 and the fixed cylinder portion 101, a nut member 112 having a screw portion that engages with an inner peripheral screw portion of the fixed cylinder portion 101 on the outer periphery is screwed. By coming into contact with the stepped portion 108a of the sleeve member 108, the sleeve member 108 is prevented from coming out backward.

  Furthermore, the rearward movement of the intermediate member 110 is restricted when the outer peripheral rear end of the intermediate support member 110 abuts against the tip of the nut member 112. The intermediate member 110 is restricted from moving forward by contacting the stepped portion 101 a of the fixed cylindrical portion 101.

  The intermediate member 110 is formed with a hole 110a through which the protruding portion 109 of the sleeve member 108 is inserted, so that the sleeve member 108 is guaranteed to move forward.

  In the state shown in FIG. 1 where the marking device M is attached to the torque wrench body 1 in the normal use state, when the handle 36 is grasped and pulled toward the front side, the hexagon wrench 6 causes the hexagon socket head bolt B to be tightened. When the torque reaches the set torque value, the toggle mechanism is actuated, the marker driving mechanism 37 starts operating, and the marker pressing lever 4 rotates clockwise around the support shaft 4a. By the clockwise rotation of the marker pressing lever 4, the pressing roller 4b rotates from the position indicated by the solid line in FIG. 1 toward the position indicated by the broken line, so that the push button 103 of the marking device M is integrated with the sleeve member 108. It is pushed forward. The push plate 107 in the push button 103 is in contact with the push rod 104 and pushes the push rod 104 forward by the spring force of the spring 106 that urges the push plate 107. Here, for example, when the marker member 105 cannot be pushed forward due to some trouble, if the push button 103 and the push rod 104 are in a direct connection state, the push rod 104 cannot be moved forward, and the marker driving mechanism 37. It may be the cause of malfunctions.

  However, even when the forward movement of the push rod 104 becomes impossible in this way, only the push button 103 and the sleeve member 108 move forward against the spring force of the spring 106, so that the marker pressing lever 4 is It is guaranteed that the pivot shaft 4a rotates clockwise with the fulcrum 4a as a fulcrum, and failure of the marker drive mechanism 37 and the like is avoided.

  The pressing sleeve 111 directly connected to the push rod 104 moves forward with a predetermined margin, contacts the rear end of the marker member 105, and pushes the marker member 105 forward. And the alignment mark m is given by the mark body 105a to the head side surface of the hexagon socket head cap screw B and the surface of the body C to be fastened. To release the marker member 105 from being pushed out, the head mechanism 2 is rotated by holding the head 2 by hand, and the marker member 105 is moved backward by the spring force of the spring 113. The push button 103 is pushed back to the original position via the push rod 104 to prepare for the next marking.

  As described above, in the present embodiment, it can be shown that the screw has been tightened by the marking applied to the head side surface of the hexagon socket head bolt B. Since the upper surface of the fastened body C is marked with one alignment mark m, it is possible to simultaneously perform marking for confirming looseness of the bolt.

  When this torque wrench with marker is not used, as shown in FIG. 4, it is necessary to cover the marker body 105a with a cap 13 to prevent ink evaporation and protect the marker body 105a. As shown, the tip of the marker body 15 is close to the tip of the hexagon stick wrench 6, and the hexagon stick wrench 6 obstructs the mounting of the cap 13.

  Therefore, in the present embodiment, the marking device M is rotated by an angle of 90 degrees with the support shaft 102 of the marking device M supported on the shaft holding portion 11c as a fulcrum, thereby being interfered with the hexagon wrench 6. The cap 13 can be put on the marker body 105a without any problem.

  Further, the marking device M can be further detached from the torque wrench body 1 after the marking device M is rotated by 90 degrees from the use position.

  4 to 10 show a marking device locking mechanism.

  In FIG. 10, as shown in FIG. 10C, the longitudinal direction of the tube 33 is the Y axis, the axial direction perpendicular to the Y axis is the X axis direction, and the vertical direction is perpendicular to the X and Y axes. Assume that the axial direction is the Z axis, and the intersection of the X axis and the Y axis exists at the center of the shaft holding portion 11c formed in the cylindrical shape of the fixed block member 11, and the entire circumference of the shaft holding portion 11c is As a position, a position at 9 o'clock that intersects the X axis is P1, and a position at 12 o'clock that intersects the Y axis is P2.

  A concave portion 11d is formed on the inner periphery of the shaft holding portion 11c from the vicinity of the 9 o'clock position P1 (slightly close to 8 o'clock) to the vicinity of the 12 o'clock position P2 (slightly close to 1 o'clock), as shown in FIG. As shown in c), a pin hole 11e into which the unlocking pin 14 is inserted is formed in the peripheral wall of the shaft holding portion 11c at the 9 o'clock position so as to face the recess 11d along the X-axis direction. The pin hole 11e has a large-diameter hole on the inner peripheral side, and a step part 11f is formed on the way to the outer peripheral side. The lock release pin 14 is formed in a cylindrical shape, and is inserted into the pin hole 11e from the insertion hole 11g opposite to the pin hole 11e, and the flange portion 14b at the rear end portion of the lock release pin 14 is inserted into the pin hole 11e. It can be inserted until it engages with the step portion 11f, and the rear end of the lock release pin insertion is securely inserted into the pin hole 11e at this engagement position.

  A knob 14a is attached to the protruding end from which the unlocking pin 14 protrudes from the outer periphery of the shaft holding part 11c. When the knob 14a is pushed and the unlocking pin 14 is pushed to the deepest position, FIG. 10 (a). As shown, the pushing end of the lock release pin 14 reaches the position of the inner peripheral surface of the shaft holding portion 11c. The lock release pin 14 is present at the lowest position of the recess 11d.

  On the other hand, on the support shaft 102, the first lock pin 15 and the second lock pin 16 are disposed apart from each other in the Z-axis direction in the shaft portion of the fitting portion with the shaft holding portion 11c. The lock pin 15 and the second lock pin 16 are arranged to be movable along the X-axis direction and the Y-axis direction when the marking device M is in use. Both the first lock pin 15 and the second lock pin 16 are formed in a taper shape, and are urged by a biasing spring (not shown) with the distal end on the small-diameter end side radially outward. Enters the recess 11d.

  In the present embodiment, the first lock pin 15 is at the same level as the lock release pin 14 in the Z-axis direction when the support shaft 102 shown in FIG. 7 is inserted deepest into the shaft holding portion 11c. Thus, the second lock pin 16 enters the upper portion of the recess 11d.

  Therefore, the first lock pin 15 and the second lock pin 16 are in contact with the inner peripheral wall of the recess 11d in the recess 11d unless they are pushed back into the shaft holding portion 11c by the lock release pin 14. Movement in the Z-axis direction and rotation around the Z-axis are restricted.

  FIG. 7 is a diagram showing the positional relationship between the first lock pin 15 and the second lock pin 16 and the recess 11d in the use state. The support shaft 102 is inserted deepest into the shaft holding portion 11c, and the first lock pin The tip of the pin 15 protrudes into the recess 11d at the 9 o'clock position P1 and the second lock pin 16 at the 12 o'clock position P2.

  In this state, since the first lock pin 15 is in contact with the lower inner peripheral wall of the recess 11d, the first lock pin 15 is moved downward along the Z axis even if the support shaft 102 is pulled out. The movement of the support shaft 102 along the Z-axis direction is restricted. Further, even if the support shaft 102 is rotated clockwise as viewed from above, the second lock pin 16 comes into contact with the inner peripheral wall of the recess 11d at the 12 o'clock position, and the support shaft 102 is rotated in the clockwise direction. The rotation is restricted. Further, even if the support shaft 102 is rotated counterclockwise when viewed from above, the first lock pin 15 contacts the inner peripheral wall of the recess 11d at the 9 o'clock position, and the support shaft 102 rotates counterclockwise. Rotation to is restricted. Therefore, in the state of use shown in FIG. 7, the marking device M attached integrally to the support shaft 102 does not move in the Z-axis direction and around the Z-axis, and does not move with respect to the fixed block member 11. It is in a state.

  Next, for example, when the cap 13 is put on the marker body 105a to prevent ink evaporation, when the lock release pin 14 is pushed in the state shown in FIG. 7, the lock release pin 14 supports the first lock pin 15 as a support shaft. The first lock pin 15 and the inner peripheral wall of the concave portion 11d are released from the engagement by being pushed into 102. As a result, as shown in FIGS. 8A and 8B, the support shaft 102 can be moved downward along the Z-axis and turned counterclockwise. However, the second lock pin 16 is allowed to move in a range where the second lock pin 16 contacts the inner peripheral wall below the recess 11d and the inner peripheral wall at the 9 o'clock position.

  Therefore, from the state of use shown in FIG. 4 (a), when the knob 14a is pushed and the lock pin 14 is pushed in and the marking device M is held by hand and pulled down in the direction of the arrow as shown in FIG. When the shaft 102 is slightly removed from the shaft holding portion 11c and the marking device M is rotated counterclockwise at this position, as shown in FIG. 4C, the second lock pin 16 moves from the position P2 at 12:00. The rotation is allowed to a position rotated 90 degrees toward the 9 o'clock position P1. In the state shown in FIG. 4C, since the hexagon stick wrench 6 is not present in front of the marker body 105a of the marking device M, the cap 13 is placed on the marker as shown in FIGS. It can be covered from the front of the body 105a.

  Subsequently, when removing the marking device M from the fixed block member 11 such as when refilling the marking device M with ink, the support shaft 102 shown in FIG. 8B is attached to the shaft holding member 11c. In the primary lowering state in which the second lock pin 16 is lowered to the position where the second lock pin 16 is engaged with the inner peripheral wall below the Z-axis direction of the recess 11d, the support shaft 102 is rotated counterclockwise, and 12 shown in FIG. When the second lock pin 16 located at the hour position P2 is rotated to the 9 o'clock position P1 shown in FIG. 9B, the knob 14a is pushed and the lock release pin 14 is pushed in. 16 enters the support shaft 102, the engagement with the inner peripheral wall of the recess 11d is released, and the support shaft 102 can be further moved downward along the Z axis as shown in FIG. It becomes. In this state, since the first lock pin 15 and the second lock pin 16 have come out of the recess 11d, the support shaft 102 can be removed from the shaft holding portion 11c as shown in FIG. As shown in FIG. 5, the marking device M can be detached from the fixed block member 11, that is, the torque wrench body 1.

  Further, in order to attach the marking device M to the torque wrench body 1, the support shaft 102 is inserted into the shaft holding portion 11c from the position where the marking device M is shifted by 90 degrees from the position in use, and is inserted to the deepest position as it is. When not in use, this state is maintained, and when in use, only a 90 degree rotation in the clockwise direction results in the use state shown in FIG.

Second Embodiment FIG. 12 shows a second embodiment of the present invention.

  In this embodiment, the marking device M inclined to an arbitrary position around the axis of the hexagon stick wrench 6 can be moved. The fixed block member 11 is an outer cylinder through which the hexagon stick wrench guide cylinder 5 is inserted. Only the portion 11b is provided, and the shaft holding portion 11c is integrally provided via a ring-shaped tightening and fixing portion 21 that is rotatably attached to the outer periphery of the outer cylinder portion 11b. The marker pressing lever 4 extends toward the tip side of the head 2 contrary to the first embodiment, and a pressing roller 4b is provided at the tip of the marker pressing lever 4 as in the first embodiment. It has been.

  A plurality of connecting rods 22 are arranged on the fastening portion 21 so as to be movable in the vertical direction along the circumferential direction, and a pressing plate 23 is attached to the upper ends of the plurality of connecting rods 22. The pressing plate 23 has a main body portion 23a formed in a ring shape and is arranged on the outer cylinder portion 11b so as to be movable in the vertical direction, and is provided between the fastening portion 21 and the main body portion 23a. The spring 24 is biased toward the head 2 by the spring force. A pressing roller 4b of the marker pressing lever 4 is slidable in the circumferential direction on the upper surface of the main body portion 23a of the pressing plate 23, and extends outward from the outer periphery of the main body portion 23a and is inclined downward. The pressing roller 23c provided at the tip of the inclined pressing lever portion 23b to press the push button 103 of the marking device M.

  When the marker pressing lever 4 tilts downward by the operation of the toggle mechanism, the pressing roller 4b of the marker pressing lever 4 presses the main body portion 23a of the pressing plate 23 downward, so that the pressing plate 23 receives the spring force of the spring 24. Accordingly, the pressing roller 23c of the inclined pressing lever portion 23b of the pressing plate 23 pushes the push button 103 of the marking device M, the marker body 105a pops out and is fastened to the side surface of the head of the hexagon socket head bolt B. An alignment mark m is applied to the upper surface of the body C.

  The fastening and fixing portion 21 integrated with the marking device M is rotated around the Z axis to an arbitrary angular position and is fixed to the outer cylinder portion 11b by tightening the fixing bolt 21a. The plate 23 is also rotated integrally, and the pressing roller 23 c is in contact with the push button 103 of the marking device M.

Third Embodiment FIG. 13 shows a third embodiment of the present invention.

  In the second embodiment described above, the alignment mark m can be applied to an arbitrary position on the entire circumference of the side surface of the head of the hexagon socket head cap screw B. However, in this embodiment, the fastening fixing portion 21 is provided. When the position of the marking device is determined, the fastening portion 21 is fastened and fixed by the L-shaped fixing member 31 so that the position of the marking device M cannot be changed. The lower end of the fixing member 31 is brought into contact with the upper surface of the fastened body C, so that the torque wrench is prevented from being tilted when the bolt B is tightened by the torque wrench.

  In each of the embodiments described above, a hexagon socket head cap screw is used as an example of a screw or a screw member such as a screw, and the hexagon socket head cap screw is tightened by a torque wrench with a handle as a tool. The screw member such as a bolt or a screw is not limited to this, and the head may have a special hole shape such as a triangular pyramid or a star instead of a hexagonal hole. It may be something like

The front view which shows the partially broken cross section of the torque wrench with a marker which shows the 1st Embodiment of this invention. The figure which shows the marking state by the torque wrench with a marker of FIG. Sectional drawing of the marking apparatus of FIG. The figure which shows the operation | movement for putting a cap on the marking apparatus of FIG. The figure which shows the state which removed the marking apparatus of FIG. 3 from the torque wrench main body without a tool. FIG. 4 is an external view showing a coupling state between the marking device of FIG. 3 and a torque wrench body. FIG. 7 is a cross-sectional view taken along the line AA in FIG. 6, showing a positional relationship between a push lock and a fitting portion in use when the marking device is supported by the torque wrench body in a locked state. FIG. 7 is a cross-sectional view taken along the line AA in FIG. 6, showing a positional relationship between a push lock that performs unlocking and a fitting portion in order for the marking device to descend primarily with respect to the torque wrench body. FIG. 9 is a cross-sectional view taken along the line AA in FIG. 6 and shows a positional relationship between the push lock and the fitting portion when the marking device is rotated 90 degrees counterclockwise in the state of FIG. FIG. 10 is a cross-sectional view taken along line AA in FIG. 6 and shows a state in which the marking device is pulled out from the state of FIG. 9. The figure explaining the allowance adjustment of the hexagon stick wrench of the torque wrench with a marker of FIG. The front view of the torque wrench with a marker which shows the 2nd Embodiment of this invention. The front view of the torque wrench with a marker which shows the 3rd Embodiment of this invention. The top view which shows the external appearance of the conventional torque wrench with a marker. The front view of the torque wrench with a marker of FIG. AA arrow sectional drawing of FIG.

Explanation of symbols

B Hexagon socket head cap screw C Fastened body M Marking device 101 Fixed cylinder part 101a Step part 102 Support shaft 103 Button 104 Push rod 105 Marker member 105a Marker body 105b Rear end part 105c Rear end flange part 105d Front end part 105d Rubber stopper 105e Valve body 105f Spring 105g Valve seat 106 Spring 107 Push plate 108 Sleeve member 108a Step portion 109 Projection portion 110 Intermediate support member 110a Hole portion 111 Press sleeve 112 Nut member 113 Spring R jig m Mark (match mark)
P1 9 o'clock position P2 12 o'clock position 1 Torque wrench body 2 Head 2a Lever part 2b Long hole 2c Flange part 3 Marker operating lever 4 Marker pressing lever 4a Support shaft 4b Pressing roller 5 Hexagon stick wrench guide cylinder 6 Hexagon stick wrench 6a Screw hole 7 Protrusion adjustment screw 7a Head 8 Screw support base 8a Shaft hole 9 Retaining cap 9a Jig hole 10 Marker drive mechanism cover 10a Jig hole 10b Lid member 11 Fixed block member 11a Upper plate part 11b Outer cylinder Part 11c Shaft holding part 11d Recess 11e Pin hole 11f Step part 12 Fixing bolt 13 Cap 14 Unlocking pin 14a Knob part 15 First lock pin 16 Second lock pin 21 Tightening fixing part 21a Fixing bolt 22 Connecting rod 23 Press Plate 23a Body portion 23b Inclined pressure lever portion 23c Pressure roller 24 Spring 31 Fixing member

Claims (7)

A support shaft is provided at an angle from the fixed tube portion, and a push button disposed on the rear end side in the axial direction of the fixed tube portion is pushed in, whereby the marker body on the front end side of the fixed tube portion is A marking device that projects forward from the fixed cylinder portion and performs marking on the portion that contacts the marker body;
Marker that pushes the rear end side of the marking device by the operation of toggle means that is mounted when the marking device is mounted via a fixed block member having a shaft holding portion that holds the supporting shaft of the marking device and reaches a set torque value A tightening tool body provided with a driving means;
Tightening that engages with the head of a screwing member such as a screw or bolt for tightening the body to be fastened, and transmits a tightening torque to the screwing member by rotation around an axis applied from the tightening tool body. A torque transmission member;
Have
The shaft holding section, a support shaft rotatably held in said marking device in parallel with the axial direction of the tightening torque transmitting member, tilting the fixed tubular portion with respect to the axial direction of the torque transmission member the tightening to the mounting, is pre-Symbol marker body attached through locking means in a direction to contact the intersecting portion between the head side and the clamp object member of the screw member,
Said locking means, said support shaft against the shaft holding portion, the support shaft tightening tool with the marker, characterized in that releasably locking the movement and rotation around the axis of the support shaft in the axial direction of the. A support shaft is provided at an angle from the fixed tube portion, and a push button disposed on the rear end side in the axial direction of the fixed tube portion is pushed in, whereby the marker body on the front end side of the fixed tube portion is A marking device that projects forward from the fixed cylinder portion and performs marking on the portion that contacts the marker body;
The marking device is mounted via a ring-shaped fixing portion having a shaft holding portion for holding the supporting shaft of the marking device, and the rear end side of the marking device is moved by the operation of the toggle means that operates when the set torque value is reached. A tightening tool body provided with a marker driving means for pushing through a ring-shaped pressing plate;
Tightening that engages with the head of a screwing member such as a screw or bolt for tightening the body to be fastened, and transmits a tightening torque to the screwing member by rotation around an axis applied from the tightening tool body. A torque transmission member;
An outer cylinder portion arranged on the outer periphery of the tightening torque transmitting member and fixed to the tightening tool body;
Have
The shaft holding section, a support shaft rotatably held in said marking device in parallel with the axial direction of the tightening torque transmitting member, tilting the fixed tubular portion with respect to the axial direction of the torque transmission member the tightening and mounted, the front Symbol marker body and sides of the head of the screw member in a direction in contact with the intersection of the body be fastened, with respect to the shaft holding portion of the support shaft, the axis of the support shaft It is attached via locking means for releasably locking the movement of the direction and the rotation of the support shaft around the axis,
The pressing plate and the fixing portion are externally mounted on the outer cylinder portion, and the pressing plate can rotate about the axis of the tightening torque transmitting member integrally with the fixing portion, and the tightening torque transmitting member A marker-tightening tool characterized by being movable in the axial direction. The marker-fastening tool according to claim 2, wherein a fixing member is attached to the fixing portion so that a lower end thereof is in contact with an upper surface of the clamped body and supports the tightening tool main body. The locking means has a predetermined angle around the axis of the support shaft, is inserted in the support shaft along the radial direction, is spaced apart in the axial direction, and the tip is spring-biased radially outward And the first lock pin and the second lock pin projecting, a recess formed in the inner peripheral surface of the shaft holding portion along the circumferential direction, and a pin hole facing the recess of the shaft holding portion. The second lock pin is disposed above the first lock pin, the first lock pin and the tip of the second lock pin are engaged with the recess, and the pin hole is inserted into the first lock pin. 4. The device according to claim 1, wherein the first lock pin can be pushed into the support shaft by a lock release pin that is arranged in accordance with a tip portion of the lock pin and passes through the pin hole. Clamping tool with marker as described in Crab. In a state that pushed the first locking pin by said lock release pin to the supporting lifting the shaft, by shifting the support shaft in the axial direction, retracts the first locking pin out of the recess, the second The marker-clamping tool according to claim 4, wherein the lock pin is allowed to rotate about the axis of the support shaft within a range in which the lock pin comes into contact with the side wall surface of the recess.   The marker tightening tool according to any one of claims 1 to 5, wherein the tightening torque transmitting member is capable of adjusting a tip position along the axial direction with respect to the tightening tool main body.   The marker tightening tool according to any one of claims 1 to 6, wherein the tightening tool body is a torque wrench body.