JP6250381B2 - Torque Wrench - Google Patents

Description

  The present invention relates to a torque wrench having a configuration in which an extension lever portion is detachably connected to a torque wrench main body portion.

  Generally, the torque wrench is provided with a torque limiter composed of a toggle mechanism, etc., and when the tightening torque reaches the set torque value, the torque limiter is activated and the operator senses that the tightening force has suddenly decreased. Then stop any further tightening operation. Thereby, fastening bodies, such as a volt | bolt, are fastened with a set torque value.

  A torque wrench includes a configuration in which an operator can change a set torque value (hereinafter referred to as a preset torque wrench) (Patent Document 1). In this preset torque wrench, the setting torque value is changed by attaching an adjustment jig such as a hexagon wrench to the setting torque value adjusting member facing the rear end of the torque wrench lever, This is done by rotating this jig while checking.

  By the way, a preset torque wrench having a small torque value can be dealt with by using a generally available hexagon wrench without preparing a dedicated jig.

On the other hand, a torque wrench with a large torque value, for example, a torque wrench exceeding 500 N cannot be dealt with with a commercially available hex wrench, and a dedicated set torque value adjustment handle is prepared. The value adjustment handle needs to be rotated.

JP-A-8-90441

  However, preparing a dedicated set torque value adjusting handle separately from the torque wrench makes it difficult to store the dedicated set torque value adjusting handle and may cause loss.

  SUMMARY OF THE INVENTION An object of the present invention is to provide a torque wrench that eliminates the need for storing a set torque value adjusting handle and does not cause loss.

The configuration of the torque wrench that solves the problem of the present invention is that a head portion is disposed at a tip portion of a first lever, a torque limiter is disposed in the first lever, and a shaft is disposed at a rear end portion of the first lever. A torque wrench main body portion provided with a set torque value adjusting member for adjusting a set torque value of the torque limiter by rotating around, an extension lever detachably connected to a rear end portion of the first lever, and the set torque It is connected to the value adjusting member, and can be changed into a linear shape and a crank shape, and can be stored in the extension lever in the linear shape state, and the set torque value adjusting member in the crank shape shape And a handle portion that can rotate.

  According to the present invention, the handle portion for adjusting the set torque value by rotating the set torque value adjusting member is disposed integrally with the torque wrench main body portion, and the handle portion can be accommodated in the extension lever in a linear shape state. Therefore, it does not affect the screw tightening work with a torque wrench, and when changing the set torque value, remove the extension lever and change the shape of the handle to a crank shape. The set torque value can be adjusted by rotating the set torque value adjusting member. Therefore, the handle portion is not lost, and the set torque value can be adjusted immediately when the set torque value is changed.

  According to the invention which concerns on Claim 2, shape change operation of a handle | steering-wheel part is easy.

  According to the invention which concerns on Claim 3, the handle | steering-wheel part shape-changed to the crank shape can be rotated smoothly. Further, the bearing member can be easily attached to the inside of the rear end side of the first lever portion.

  According to the invention of claim 4, the handle portion has a three-joint structure, and the first intermediate handle member can be tilted to a position parallel to the outer periphery of the first lever. When temporarily storing the torque wrench without mounting, the handle portion can be folded compactly, and the torque wrench can be safely stored.

According to the invention of claim 5, it is possible to fold the handle portion more compact, when storing remove the extended lever from the relationship, such as the length of the storage location, the handle portion is an obstacle Fear can be eliminated.

  According to the invention of claim 6, the handle portion can be removed.

1 shows an embodiment of a torque wrench according to the present invention, in which (a) is a state in which an extension lever is removed from a torque wrench body, (b) is a disassembly of a torque wrench body, a handwheel handle for adjusting a set torque value, and an extension lever. The figure which shows a state. It is sectional drawing of the whole torque wrench, (a) is the state before inserting and fitting an extension lever to a torque wrench main-body part, (b) shows the state which inserted and fitted the extension lever to the torque wrench main-body part. 1A and 1B show a handwheel handle portion of FIG. 1, FIG. 2A is a diagram showing a disassembled state, FIG. 1B is a diagram showing a linearly extended state, and FIG. The lock device which connects a torque wrench main part and an extension lever so that removal is possible, and an exploded perspective view showing the state before attaching a handwheel handle part to a torque wrench main part side. FIG. 4 is a perspective view showing a state after the handwheel handle portion of FIG. 3 is attached to the torque wrench main body side. The perspective view of the state which connected and fixed the extension lever to the torque wrench main-body part in the state which accommodated the handwheel handle. (A)-(c) is a figure explaining the procedure of change operation of a setting torque value. (A) is a state before the extension lever is connected to the torque wrench main body, (b) is a state where the extension lever is connected and fixed, (c) is a front view of the lock spring part, and (d) is ( A) AA cross-sectional view of (a), (e) is a cross-sectional view of the BB arrow of (b) and shows a state where the lock button is pushed, (f) is a cross-sectional view of the BB arrow of (b) Shows a state in which locking is completed by engaging with the lock hole. The figure which shows the handwheel handle part of 2nd Embodiment. The figure which shows the structure of the spindle of the 2nd joint part of FIG.

  Hereinafter, the present invention will be described in detail based on embodiments shown in the drawings.

1 is a plan view showing a torque wrench according to a first embodiment of the present invention. FIG. 1 (a) shows a state in which an extension lever is removed from a torque wrench main body, and FIG. 1 (b) shows a torque wrench main body and set torque. The figure which shows the disassembled state of the handwheel handle part for value adjustment, and an extension lever. 2A and 2B are cross-sectional views of the entire torque wrench. FIG. 2A shows a state before the extension lever is inserted and fitted into the torque wrench main body, and FIG. 2B shows a state where the extension lever is inserted and fitted into the torque wrench main body. .

  1 and 2, a preset torque wrench (hereinafter simply referred to as a torque wrench) 1 of the present embodiment includes a torque wrench main body 10, an extension lever 30, a handwheel handle 50, and a lock device 80. The torque wrench 1 of the present embodiment has a torque adjustment range of, for example, 500N to 2100N, the overall length is, for example, 1950 mm, and the overall length of the torque wrench main body 10 is 1160 mm. Of course, the present invention is not limited to a torque wrench of this size, and it goes without saying that it can be applied to larger and smaller sizes. In FIG. 2, the configuration of the handwheel handle portion 50 is omitted.

  The torque wrench body portion 10 includes a first lever portion 11 formed in a hollow cylindrical shape, a head portion 12, and a support shaft 13 that rotatably supports the head portion 12 on the distal end side of the first lever portion 11. Have Further, the torque wrench main body 10 includes a torque limiter 16 including a toggle part 14 made of a toggle mechanism and a set torque value adjusting part 15, for example. Furthermore, the torque wrench body 10 is provided with an engaging portion 81 of the lock device 80. The rear end portion of the first lever portion 11 is formed in a first insertion portion 111 having an outer diameter D1.

  The head portion 12 includes a head main body portion 121 and a head lever portion 122 extending rearward from the head main body portion 121, and the head lever portion 122 is inserted into the first lever portion 11 from the tip end side.

  The toggle part 14 is configured by connecting a toggle link member (not shown) between the thruster 141 moving in the axial direction of the first lever part 11 and the rear end part of the head lever part 122 in the axial direction. It is said.

The set torque value adjusting unit 15 includes a first spring seat 151 that is movable in the axial direction, and a set torque value adjusting screw member that is formed in an axial shape and is threaded on the outer peripheral surface (hereinafter simply referred to as an adjusting screw rod). 152), a second spring seat 153 screwed into the adjustment screw rod 152, a torque value setting spring 154 disposed between the first spring seat 151 and the second spring seat 153, and the adjustment screw rod 152. A thrust bearing 155 that restricts movement in the axial direction and allows rotation around the axis. Further, a scale (not shown) indicating a torque value is displayed on a part of the second spring seat 153, and is visually observed through the main scale display window 112 and the sub scale display window 114 formed on the peripheral wall portion of the first lever portion 11. The scale can be confirmed by The rear end of the thruster 141 comes into contact with the first spring seat 151.

A socket (not shown) is attached to the square shaft portion 124 of the head main body 121, and a fastening member (not shown), for example, a bolt is engaged with the socket, and the extension lever 30 is gripped and pulled toward the near side to center the bolt. Then, the torque wrench 1 is rotated to perform screw tightening. When the set torque value is reached, the torque limiter 16 is activated. When the first lever portion 11 rotates with respect to the head portion 12, the torque limiter 16 moves so that the toggle link member has a gentle inclination angle with respect to the axis , so that the thruster 141 is connected to the torque value setting spring 154. Operates by moving against the spring force.

  The set torque value can be set to a higher value as the adjusting screw rod 152 is rotated to move the second spring seat 153 forward. The rear end portion of the adjustment screw rod 152 is formed in an engagement shaft portion 156 formed in, for example, a square axis, and an engagement hole portion 61 described later of the handwheel handle portion 50 engages with the engagement shaft portion 156.

The extension lever 30 includes a second lever portion 31 formed in a hollow cylindrical shape, and a second insertion portion 32 having an inner diameter D2 provided at a tip portion of the second lever portion 31. The inner diameter D2 of the second insertion portion 32 is formed to be slightly larger than the outer diameter of the first insertion portion 111, and the second insertion portion 32 is inserted into the first insertion portion 111 to a predetermined insertion position without looseness. Match.

  The second insertion portion 32 is formed with a sub-scale viewing window 33 and a lock button engagement hole 34 into which a lock button 82 described later of the engagement portion 81 is engaged. When the second insertion portion 32 of the extension lever 30 is inserted into the first insertion portion 111 of the torque wrench main body portion 10 and inserted to a predetermined position, the lock button 82 is engaged with the lock button engagement hole 34 and the extension lever 30 is The lug wrench main body 10 is inserted and fitted without being removed. The configuration of the engaging portion 81 will be described later.

  3 shows the handwheel handle portion 50, and FIG. 4 shows an exploded perspective view of the lock device 80 and the handwheel handle portion 50. FIG. In FIG. 3, (a) shows a disassembled state, (b) shows a linearly extended state, and (c) shows a state that can be bent and turned.

  The handwheel handle 50 includes an intermediate handle shaft 51, a distal handle shaft 52, a base handle shaft 53, a pipe-shaped grip portion 54, and a handle bearing portion 55 that rotatably supports the base handle shaft 53. The grip part 54 is rotatably mounted on the tip handle shaft 52. A C-type retaining ring 52 a is attached to the tip of the tip handle shaft 52, and the grip portion 54 prevents the tip handle shaft 52 from coming off.

  The intermediate handle shaft 51 is formed with first and second groove portions 56 and 57 having a U-shaped cross section at both ends symmetrically in FIG. A tenon portion 58 of the front end handle shaft 52 is inserted into the first groove portion 56 on the front end side of the intermediate handle shaft 51, and the front end handle shaft 52 is rotatably connected to the intermediate handle shaft 51 around the support shaft 59. The tenon portion 58 is rotatable about a support shaft 59 within a range of ± 90 degrees.

  The tenon portion 60 of the base handle shaft 53 is inserted into the groove 57 on the base end side of the intermediate handle shaft 51. The base handle shaft 53 has a first shaft portion 62 in which an engagement hole 61 is formed inside the shaft on the distal end side, and a second shaft portion 63 formed between the first shaft portion 62 and the tenon portion 60. . The first shaft portion 62 is formed to have a larger diameter than the second shaft portion 63, and a step portion 64 is formed at the boundary.

  The handle bearing portion 55 has an inner diameter portion 55 a on which the first shaft portion 62 is pivotally supported, and an inner flange portion 65 formed on the inner diameter portion 55 a, and the step portion 64 abuts on the inner flange portion 65, thereby The handle shaft 53 is prevented from coming out toward the rear in the axial direction (the extension lever 30 side).

  The tenon portion 60 of the base handle shaft 53 passes through the inner diameter portion 55a of the handle bearing portion 55 and comes out to the outside, and fits into the second groove portion 57 of the intermediate handle shaft 51. In this fitted state, the intermediate handle shaft 51 is inserted by inserting the support shaft 69 through the pin hole 67 formed in the support wall portion 66 disposed on both sides of the second groove portion 57 and the pin hole 68 of the tenon portion 60. Is coupled to the base handle shaft 53. The intermediate handle shaft 51 can be rotated ± 90 degrees around the support shaft 69 with respect to the base handle shaft 53. The support shaft 69 is prevented from coming off by inserting the retaining pin 71 into the pin hole 70 on the penetrating end side.

  In the present embodiment, the handwheel handle portion 50 is inserted into the first lever portion 11 from the rear end side with the handle bearing portion 55 assembled. At that time, the base handle shaft 53 is inserted so that the square hole-shaped engagement hole 61 engages with the engagement shaft 156 of the adjustment screw rod 152.

  The handle bearing portion 55 has a flange portion 72 formed on the outer peripheral portion on the rear end side, a stopper shaft portion 73 having a predetermined outer diameter D3 formed on the front end side (head body portion 121 side), and further, the stopper shaft portion. A threaded portion 74 having a thread groove formed on the outer peripheral surface is formed between the flange 73 and the flange portion 72. The threaded portion 74 is screwed into a handle bearing threaded portion formed on the inner peripheral surface of the rear end portion of the first lever portion 11. In addition, the flange portion 72 is formed by cutting out a part of the outer periphery of the disk shape and forming a flat end edge portion 72a symmetrical about the axis. Therefore, when the screw portion 74 of the handle bearing portion 55 is screwed into the handle bearing screw portion and screwed to a predetermined position, it can be tightened using the end edge portion 72a.

  FIG. 5 shows a state in which the handle bearing portion 55 is fixed at a predetermined position in the first lever portion 11. The handwheel handle portion 50 has a base handle shaft 53, an intermediate handle shaft 51, and a distal handle shaft 52 at the center. The connection state arranged in a line along the line is shown. When the extension lever 30 is inserted into and fitted into the torque wrench main body 10, the handwheel handle portion 50 in the one-line connection state is accommodated in the extension lever 30. At this time, by providing the ring-shaped protrusion 54a on the outer periphery of the grip part 54, the ring-shaped protrusion 54a comes into contact with the inner peripheral surface of the extension lever 30, and the grip part is used when using the torque wrench or carrying it. It is possible to prevent 54 from rattling.

  When changing the set torque value, the extension lever 30 is removed from the torque wrench main body 10 as shown in FIGS. 7 (a) and 7 (b), and the handwheel handle as shown in FIG. 7 (b). 50 is folded from a single row connection state into a crank shape shown in FIG. 7C so that it can function as a handle. In this state, the set torque value can be changed by grasping the grip portion 54 with a hand and rotating in the clockwise direction or the counterclockwise direction. When the operation for changing the set torque value is completed, the screwing operation can be performed again by returning the handwheel handle portion 50 to the one-line connection state and inserting the extension lever 30 into the torque wrench main body portion 10 and fitting. In addition, when the screw tightening operation is not performed or when carrying, the extension lever 30 is detached from the torque wrench main body 10. Thereby, even if it is a long torque wrench at the time of use, storage and transportation can be performed without taking up space.

  In the present embodiment, the extension lever 30 is detachably connected to the torque wrench main body 10 by an insertion fitting type locking device 80 instead of a screw fastening type.

  The lock device 80 according to the present embodiment includes an engagement portion 81 disposed on the torque wrench main body 10 side and a lock button engagement hole 34 that is an engaged portion disposed on the extension lever 30 side.

  The engaging portion 81 is disposed at the position of the stopper shaft portion 73 of the handle bearing portion 55 on the rear end side of the first lever portion 11. The engaging portion 81 includes an urging portion 83 that forms a loop shape opened by a leaf spring, and a cylindrical lock button 82 that is attached to the urging portion 83. As shown in FIGS. 4 and 8C, the urging portion 83 has a configuration in which, for example, a single leaf spring formed in a band shape is bent into a C shape, and the first spring portion 84 having an arc shape and The second spring portion 85 has an arc shape. The distal ends of the first spring portion 84 and the second spring portion 85 are free ends, and an overlapping portion 86 is provided in which the distal end portions slide and overlap each other.

  The urging portion 83 having such a configuration is such that the urging force acts in the direction in which the inner diameter of the annular portion formed by the first spring portion 84 and the second spring portion 85 increases, and the portion opposite to the overlapping portion 86. The lock button 82 is attached with the action point as the point of action. Further, when the lock button 82 is pushed toward the inside of the annular portion, the inner diameter of the annular portion is reduced against these urging forces. At that time, the first spring portion 84 and the second spring portion 85 of the overlapping portion 86 slide with each other. For this reason, the ring formed by the urging portion 83 is stably contracted.

  In the present embodiment, the stopper shaft portion 73 of the handle bearing portion 55 is located inside the annular portion of the urging portion 83. Therefore, the urging portion 83 contracts its inner diameter until the annular portion abuts against the stopper shaft portion 73 (hereinafter referred to as the minimum diameter position). Further, the inner diameter of the biasing portion 83 is increased by the biasing force until the annular portion comes into contact with the inner peripheral wall surface of the first lever portion 11 (hereinafter referred to as the maximum diameter position).

  A lock button hole 113 into which the lock button 82 is inserted is formed in the peripheral wall portion of the first lever portion 11. At the maximum diameter position of the urging portion 83, the lock button 82 passes through the lock button hole 113 and engages with the lock button engagement hole 34. Further, at the minimum diameter position of the urging portion 83, the lock button 82 is retracted from the lock button engagement hole 34 and immersed in the lock button hole 113. This immersion operation can be performed by the operator pressing the lock button 82 with his / her finger.

  Next, the locking operation of the locking device 80 will be described with reference to FIGS.

FIG. 5 showing a state in which the extension lever 30 is detached from the first lever portion 11 corresponds to FIG. 8A, and FIG. 6 showing a state in which the extension lever 30 is inserted and fitted into the first lever portion 11 is shown in FIG. Corresponds to (b). The urging portion 83 shown in FIG. 8C is guided by guide portions 73a and 73b formed on the front and rear sides of the stopper shaft portion 73 in the axial direction, thereby preventing displacement in the axial direction.

Before the handle bearing portion 55 is mounted in the first lever portion 11, the urging portion 83 is inserted into the first insertion portion 111 side of the first lever portion 11 by contracting the annular portion. When the lock button 82 reaches the lock button hole 113, the lock button 82 enters and penetrates the lock button hole 113 as shown in FIG. Since the base outer diameter of the lock button 82 is formed larger than the inner diameter of the lock button hole 113, the base of the lock button 82 engages with the lock button hole 113 and protrudes further outward in the radial direction. Is prevented.

Next, the handle bearing portion 55 is screwed into the first insertion portion 111 and is further screwed in until the flange portion 72 comes into contact with the rear end surface of the first lever portion 11. In this screwed state, the stopper shaft portion 73 of the handle bearing portion 55 is positioned within the annular portion of the urging portion 83.

  In the lock device 80 configured as described above, when the lock button 82 is pushed in with the finger of the operator's hand, the lock button 82 is immersed in the lock button hole 113. Therefore, the second insertion portion 32 of the extension lever 30 is inserted and pushed into the first insertion portion 111, and the lock button 82 is inserted into the lock button hole 113 while the tip edge of the extension lever 30 is in contact with the lock button 82. When the extension lever 30 is further pushed in, the lock button 82 enters the second insertion portion 32 as shown in FIG.

  When the extension lever 30 is further inserted and the lock button engagement hole 34 of the second insertion portion 32 reaches just above the lock button 82, the lock button 82 is urged 83 as shown in FIG. 8B, the extension lever 30 engages with the torque wrench main body 10 and the movement in the axial direction and the rotation around the axis are restricted. As shown in FIG. The extension lever 30 is integrally connected to the torque wrench body 10.

  Further, in order to release the extension lever 30 shown in FIG. 8B integrally connected to the torque wrench body 10 and to remove it as shown in FIG. When the lock button 82 is pushed with the finger of the operator's hand and the annular portion of the urging portion 83 comes into contact with the stopper shaft portion 73 of the handle bearing portion 55, the lock button 82 and the lock button engagement hole 34 are engaged. When the extension lever 30 is pulled in this state, the extension lever 30 can be detached from the torque wrench main body 10.

According to the present embodiment, when the extension lever 30 is attached to the torque wrench body 10, the handwheel handle 50 of the two- joint link structure is housed in the extension lever 30 in a state of extending linearly. Yes. Therefore, when changing the set torque value, if the extension lever 30 is removed, the handwheel handle portion 50 appears. Therefore, the handwheel handle is assembled by folding the handwheel handle portion 50 into a crank shape, and the handle is turned by hand. The set torque value can be changed easily. At this time, since the handwheel handle portion 50 is integrally assembled with the torque wrench main body portion 10, there is no risk of loss.

In the above-described embodiment, the head portion 12 is rotatable relative to the first lever portion 11 with the support shaft 13 as a fulcrum, but is not limited to such a form and around the square axis. When a cam portion is provided, a roller to which a spring force of a torque value setting spring is transmitted is brought into contact with the cam portion, and a fastening member such as a bolt is tightened to a set torque value, the cam portion sets the torque value to the roller. It may be configured to move against the spring force of the spring so that the cam top portion of the cam portion rides over the roller. In this case, the head portion is fixed to the lever portion.

  In the above-described embodiment, as a structure for connecting the extension lever 30 to the torque wrench main body 10, an insertion fitting method is taken as an example, and the lock device 80 of the engagement type between the lock button 82 and the lock button engagement hole 34 is taken as an example. However, the present invention is not limited to this, and the extension lever 30 may be connected to the torque wrench main body 10 by a screw coupling method.

Second Embodiment FIG. 9 shows a handle portion of a torque wrench according to a second embodiment. In addition, the same code | symbol is attached | subjected to the same member as the member shown in FIG.1, FIG2 and FIG.3, and the description is abbreviate | omitted.

This embodiment shows a modification of the first embodiment. In the first embodiment, the handle shaft of the handle portion 50 while being a second joint structure which can be bent by the support shaft 69 and the support shaft 59, the present embodiment is 3 glenoid added further supporting shaft to the handle shaft It is said.

In the handwheel handle portion 150 of the present embodiment, the intermediate handle shaft 151 includes a long first intermediate handle shaft 152 and a second intermediate handle shaft 153 that is shorter than the first intermediate handle shaft 152. The distal end side of the first intermediate handle shaft 152 is connected to the distal handle shaft 52 by a support shaft 59 so as to be rotatable at an angle of ± 90 degrees to constitute a first joint portion O. A rear end portion side of the second intermediate handle shaft 153 is connected to the base handle shaft 53 by a support shaft 169 so as to be rotatable at an angle of ± 90 degrees to constitute a second joint portion P.

Further, constituting a rear end portion of the first intermediate wheel shaft 152, the the distal end portion of the second intermediate handle shaft 153 is pivotally connected at an angle of more ± 90 degrees supporting shaft third joint portion Q . The third joint portion Q is formed by the same structure as the first joint portion O, for example. The mounting position of the supporting shaft constituting the third joint portion Q is in a folded state of the second intermediate wheel shaft 153 by 90 degrees, is located outside the outer peripheral surface of the first lever portion 11. Then, as shown in FIG. 9A, the first intermediate handle shaft 152 can be tilted 90 degrees (hereinafter referred to as 90 degrees in the minus direction) toward the first lever portion 11 side. At this time, the length of the second intermediate handle shaft 153 is set so that the grip portion 54 extending straight to the first intermediate handle shaft 152 can contact the outer peripheral surface of the first lever portion 11 with almost no gap. ing.

  In this way, by providing the third joint portion Q so as to bisect the intermediate handle shaft 151, as shown in FIG. 9A, the handwheel handle portion 150 is along the outer peripheral surface of the first lever portion 11. Since it can be tilted in the negative direction, the handwheel handle 150 does not get in the way when the torque wrench is temporarily stored, for example, without attaching the extension lever 30.

  In use, as shown in FIG. 9B, when the handwheel handle portion 150 that has fallen in the minus direction is raised 90 degrees, it can be used as a handwheel handle.

  As shown in FIG. 10, the support shaft 169 is attached so that it can be extracted and inserted. For this reason, the handwheel handle 150 can be removed. When temporarily storing the torque wrench, if the extension lever 30 is too long in the mounted state, the torque wrench can be temporarily stored safely if the handwheel handle portion 150 can be removed.

The structure in which the support shaft 169 can be removed is configured such that the support shaft 169 has a hollow shape and is provided with a slit 170 along the axial direction in the peripheral wall portion to form a C-shaped cross section. When plugged into the other shaft hole portion of the support shaft 169 through one of the axial hole portion base handle shaft 5 3 of the axial hole from the second intermediate wheel shaft 153 second intermediate handle shaft 153, the outer diameter of the support shaft 169 Shrinks and the spindle 169 is inserted. At that time, a force that expands the support shaft 169 in the radially outward direction acts, so that the support shaft 169 is prevented from coming off. On the other hand, if the other end side of the support shaft 169 is pushed toward one end side, the support shaft 169 can be removed.

Instead of the support shaft 169, a support pin having the same diameter as the inner diameter of the shaft hole portion is used. For example, the tip end portion of the support shaft pin is a screw portion, and the screw of the support pin is connected to the tip portion of the shaft hole portion. Forming a female threaded portion, or forming groove portions along the circumferential direction on the inner peripheral surfaces of both end portions of the shaft hole portion, and attaching a snap ring to these groove portions so as to be removable. You may make it arrange | position a spindle pin between the snap rings with which both ends were attached. Moreover, you may employ | adopt such a pin structure easy to insert / remove also about each spindle of the hand-operated handle part of 2 joints or 3 joint structure of each above-mentioned embodiment.

DESCRIPTION OF SYMBOLS 1 Torque wrench 10 Torque wrench main-body part 11 1st lever part 12 Head part 13 Support shaft 14 Toggle part 15 Setting torque value adjustment part 16 Torque limiter 111 1st insertion part 113 Lock button hole 152 Adjustment screw rod 156 Engagement shaft part 30 Extension lever 32 Second insertion portion 34 Lock button engagement hole 50 Hand-operated handle portion 51 Intermediate handle shaft 52 Tip handle shaft 53 Base handle shaft 54 Grip portion 55 Handle bearing portion 59, 69 Support shaft 61 Engagement hole portion 72 Flange portion 73 Stopper shaft portion 74 Screw portion 80 Lock device 81 Engagement portion 82 Lock button 83 Biasing portion 84 First spring portion 85 Second spring portion 86 Overlap portion 150 Handwheel handle portion 169 Support shaft

Claims (6)

A head portion is arranged at the tip of the first lever, a torque limiter is arranged in the first lever, and a set torque value of the torque limiter is adjusted by rotation around an axis at a rear end portion of the first lever. A torque wrench main body with a set torque value adjusting member to be
An extension lever detachably connected to the rear end of the first lever;
It is connected to the set torque value adjusting member and can be changed into a linear shape and a crank shape, and can be stored in the extension lever in the linear shape state, and the set torque in the crank shape state. A handle portion that allows the value adjustment member to rotate;
Having a torque wrench.   The handle portion includes a first joint portion for tiltably connecting a tip handle member to a tip portion of the intermediate handle member, and a second joint for tiltingly connecting a rear end portion of the intermediate handle member to the set torque value adjusting member. The torque wrench according to claim 1, further comprising a joint portion. The handle portion has a base handle member for connecting a rear end portion of the set torque value adjusting member and the intermediate handle member,
3. The torque wrench according to claim 2, wherein the base handle member is rotatably supported by a bearing member fixed inside the rear end side of the first lever by screw coupling. 4. The handle portion includes a first joint portion that rotatably connects a first intermediate handle member to a distal end handle member, and a second joint portion that rotatably connects a second intermediate handle member to the torque value adjusting member. A third joint portion pivotably connecting the second intermediate handle member to the first intermediate handle member, and the third joint portion is in a state where the second intermediate handle member is raised. The torque wrench according to claim 1, wherein the first intermediate handle member can be tilted to a position parallel to the outer periphery of the first lever.   5. The second intermediate handle member according to claim 4, wherein the second intermediate handle member is set to a length that allows the first intermediate handle member to tilt without a gap in a position parallel to the outer peripheral surface of the first lever. A wrench. The second joint portion is be configured to allow rotation of the coupling pin as a fulcrum, claim 4 or 5, characterized in that the connecting pin is withdrawn and plug engage held via engagement means Torque wrench as described in

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