Ratchet rotary tool

Abstract

To provide a ratchet rotary tool improved in work efficiency for performing switching to limit the rotation direction.SOLUTION: A ratchet rotary tool 1 comprises: a head portion having an output portion 21 capable of applying a rotational force to a rotary fastener that performs a fastening action by being rotated; and a handle portion provided continuously from the head portion and held by a user when the user performs work of rotating the rotary fastener. The head portion comprises a ratchet mechanism 22 that limits a direction of the rotational force exerted on the rotary fastener of the output portion 21. The handle portion comprises a switching operation portion 31 for performing switching operation of the ratchet mechanism 22. The switching operation portion 31 and the head portion are connected by a switching transmission mechanism 5 so that a displacement for the switching can be transmitted.SELECTED DRAWING: Figure 3

Description

[Technical Field]

[0001] The present invention relates to a ratchet rotary tool. [Background technology]

[0002] For example, Patent Document 1 describes a ratchet wrench as a ratchet rotary tool equipped with a ratchet mechanism. With this ratchet wrench, an engagement portion that engages with a rotary fastener (bolt, nut, etc.) can be switched to apply a rotational force to the rotary fastener when rotated in either the tightening or loosening direction, and can be switched so that the engagement portion does not rotate due to idling in the opposite direction.

[0003] The ratchet wrench described in Patent Document 1 is provided with a switch lever that uses a ratchet mechanism to limit the direction in which the engaging portion applies a rotational force to the rotary fastener to one direction, and allows the engaging portion to rotate freely in the other direction. By changing the orientation of the switch lever, the direction in which the engaging portion applies a rotational force to the rotary fastener can be limited to either the tightening direction or the loosening direction.

[0004] Conventionally, this switching lever has been located near the engagement part, which means that in order to change the rotation direction, the user has to change the hand holding the handle or operate the lever with the other hand, which is time-consuming and makes changing the rotation direction less efficient. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] JP 2017-13181 A (Fig. 1) Summary of the Invention [Problem to be solved by the invention]

[0006] SUMMARY OF THE INVENTION It is therefore an object of the present invention to provide a ratchet rotary tool that improves the efficiency of switching to limit the rotation direction. [Means for solving the problem]

[0007] The present invention is a ratchet rotary tool comprising a head portion having an output portion capable of applying a rotational force to a rotary fastener that performs a fastening action when rotated, and a handle portion that is provided continuously with the head portion and that is held by a user when rotating the rotary fastener, wherein the head portion has a ratchet mechanism that limits the direction of the rotational force that is applied to the rotary fastener of the output portion, the handle portion has a switching operation portion for performing a switching operation of the ratchet mechanism, and the switching operation portion and the head portion are connected by a switching transmission mechanism so as to be able to transmit the displacement for the switching.

[0008] According to this configuration, since the switching operation part is provided on the handle part, the user does not need to change the way he or she holds the handle part in order to perform the switching operation of the ratchet mechanism.

[0009] In addition, the switching transmission mechanism has a long portion extending from the handle portion to the head portion, and the displacement for switching caused by operating the switching operating portion can be transmitted to the output portion via the long portion as a longitudinal displacement or a circumferential displacement.

[0010] According to this configuration, the displacement can be transmitted by the long portion, so that the configuration of the switching transmission mechanism can be simplified.

[0011] In addition, the handle portion has a rotational operating portion that inputs a rotational force to rotate the output portion, and is provided with a rotational force transmission mechanism that is arranged from the handle portion to the head portion and transmits the rotational force applied to the rotational operating portion to the output portion, and the long portion of the switching transmission mechanism and the rotational force transmission mechanism are arranged in parallel.

[0012] According to this configuration, the parallel arrangement allows for a compact arrangement.

[0013] It may also comprise a combination of a tubular portion extending from the handle portion to the head portion and a rod-shaped portion passing through the internal space of the tubular portion, one of the tubular portion and the rod-shaped portion belonging to the switching transmission mechanism and the other belonging to the rotational force transmission mechanism.

[0014] According to this configuration, the rod-shaped portion is built into the tubular portion, making it possible to make the device more compact.

[0015] The ratchet wrench described in Patent Document 1 is a manual type and is equipped with a quick-turn mechanism that increases the rotation speed of a rotary fastener when no tightening torque is applied (the initial stage of tightening, and the later stage of loosening) to shorten the operation time. This quick-turn mechanism has a dial-shaped rotation input unit that allows the user to directly turn the engaging part without turning the handle. This rotation input unit is located adjacent to the engaging part. Therefore, in order to perform quick turning, the user must change the hand holding the handle or operate the wrench with the hand opposite to that holding the handle. This time-consuming process results in poor work efficiency for quick turning.

[0016] In view of the above circumstances, the present invention provides a ratchet rotary tool in which the handle portion has a rotation operation portion that inputs a rotational force to rotate the output portion, and the ratchet rotary tool is equipped with a rotational force transmission mechanism that is provided from the handle portion to the head portion and transmits the rotational force applied to the rotation operation portion to the output portion.

[0017] According to this configuration, the rotary fastener can be rotated quickly using the rotary operation part, and the user does not need to move his / her hand significantly to operate the rotary operation part when rotating quickly.

[0018] Furthermore, a plurality of the rotation operation parts may be provided on the handle part.

[0019] With this configuration, the user can select the most convenient handle from a plurality of handles depending on the situation.

[0020] In addition, the rotation operating unit can be detachable from the handle unit, and the rotational force transmission mechanism can be connected to a rotation drive member of another power source when the rotation operating unit is detached from the handle unit.

[0021] With this configuration, the input of driving force can be selected.

[0022] The handle portion may be elongated, and the rotation operation portion and the switching operation portion may be provided at different positions in the circumferential direction of the handle portion.

[0023] This configuration makes it easy to perform both operations. [Effects of the Invention]

[0024] According to the present invention, since the switching operation part is provided on the handle part, the user does not need to change the grip of the handle part in order to switch the ratchet mechanism, which improves the efficiency of the operation for limiting the rotation direction. [Brief explanation of the drawings]

[0025] [Figure 1] 1 is a perspective view of a ratchet handle according to an embodiment of the present invention, seen from the output part side (the back side as seen by a user during use). FIG. [Figure 2] FIG. 2 is a perspective view of the ratchet handle as seen from the opposite side to the output portion (the front side as seen by the user during use). [Figure 3] FIG. 3 is a perspective view showing the state in which the exterior is removed from the state shown in FIG. 2. [Figure 4] FIG. 2 is a longitudinal cross-sectional view showing a state in which the handle portion is cut along its axis. [Figure 5] FIG. 2 is a perspective view showing components around the ratchet claw. DETAILED DESCRIPTION OF THE INVENTION

[0026] Next, one embodiment of the present invention will be described, taking as its example a ratchet handle 1, which is a manual ratchet rotary tool. Like conventional ratchet handles, this ratchet handle 1 is used for tightening or loosening rotary fasteners (bolts, nuts, etc.) (not shown) that perform a fastening action when rotated.

[0027] FIG. 1 shows a perspective view of the ratchet handle 1 of this embodiment as seen from the output portion 21 side (the back side when in use), and FIG. 2 shows a perspective view as seen from the opposite side (the front side when in use). FIG. 3 shows a perspective view of the internal configuration with the exterior removed from the state shown in FIG. 2. This ratchet handle 1 mainly has a head portion 2, a handle portion 3, and a connecting portion 4. In this embodiment, the head portion 2, handle portion 3, and connecting portion 4 are aligned in a straight line. In the description of the front-to-rear direction of the ratchet handle 1, the head portion 2 side is the front side, and the handle portion 3 side is the rear side.

[0028] The head portion 2 has an output portion 21 that can apply a rotational force around the axis to the rotary fastener. The output portion 21 protrudes, for example, in one direction (upward in FIG. 1 ) from the base of the head portion 2 (the portion where the base portion 21a of the output portion 21 is embedded). The output portion 21 is switched between a state in which it can rotate around the axis in the head portion 2 and a state in which it cannot rotate by a ratchet mechanism 22 (described later), thereby limiting the direction of rotation. A socket (not shown) is detachably attached to the output portion 21. This socket corresponds to the shape of the engaged portion (such as a bolt head) of the rotary fastener. When the socket is engaged with the rotary fastener, the user can apply the rotational force generated by the user to the rotary fastener from the output portion 21 via the socket by holding the handle portion 3 and rotating the output portion 21 around the axis. At this time, the output portion 21 in the head portion 2 is in an unrotatable state.

[0029] The head unit 2 has a ratchet mechanism 22 that limits the direction of the rotational force exerted on the rotary fastener of the output unit 21. The operation and function of the ratchet mechanism 22 are the same as those of conventional mechanisms. In this embodiment, as shown in FIG. 3, a pair of ratchet claws 221 are provided on either side of an imaginary line connecting the rotation centers of the handle unit 3 and the output unit 21, relative to a ratchet tooth portion 211 integrally provided on the outer periphery of the output unit 21. The ratchet claw 221 is a pawl-shaped member that rotates within a predetermined range (indicated by an arrow) around a rotation support portion 2213 inside the head unit 2, as shown in FIG. 5. The ratchet claw 221 has a claw-side tooth portion 2212 at its tip. The ratchet claw 221 has an engaged protrusion 2211 at its base that protrudes toward the imaginary line. The engaged protrusion 2211 is pressed by a step (or ridge) 521 of a cam portion 52 provided at the front end of the switching transmission mechanism 5 (described later), thereby causing the rotational movement. A return spring 222 is attached to the ratchet claw 221, and when not pressed by the cam portion 52, the ratchet claw 221 returns to its original position due to the spring force of the return spring 222. The cam portion 52 presses only one or the other of the pair of ratchet claws 221 against the engaged projections 2211. The claw side teeth 2212 of one of the pair of ratchet claws 221 engage with the ratchet teeth 211 of the output portion 21, thereby preventing rotation of the output portion 21 in one direction, and the claw side teeth 2212 overcome the ratchet teeth 211 of the output portion 21, thereby allowing rotation in the other direction. For example, the ratchet claw 221 illustrated in the lower left of FIG. 3 prevents counterclockwise rotation of the output portion 21 and allows clockwise rotation. The ratchet claw 221 illustrated in the upper right of FIG. 3 prevents clockwise rotation of the output portion 21 and allows counterclockwise rotation. As a result, the output part 21 is fixed in the head part 2 so that it does not rotate in the one direction, and the user can hold the handle part 3 in this state and turn it around the axis of the output part 21, thereby transmitting rotational force from the output part 21 to the rotary fastener. On the other hand, when the handle part 3 is turned in the opposite direction, the claw side teeth 2212 overcome the ratchet teeth 211 of the output part 21 as described above, causing the output part 21 to rotate (spin freely) in the head part 2, and therefore the rotational force is not transmitted from the output part 21 to the rotary fastener.

[0030] The handle portion 3 is indirectly or directly connected to the head portion 2 and is a long portion that the user holds when rotating the rotary fastener. In this embodiment, a cylindrical connecting portion 4 is interposed between the head portion 2 and the handle portion 3. The connecting portion 4 has a narrower diameter than the head portion 2 and the handle portion 3, and as shown in FIG. 4 , a long switching transmission mechanism 5 and a rotational force transmission mechanism 6 are built in. The handle portion 3 has a switching operation portion 31 that the user can use to switch the rotation direction of the ratchet mechanism 22. While the switching operation portion 31 is provided on the head portion 2 in conventional ratchet handles, in this embodiment it is provided on the handle portion 3. The operation direction of the switching operation portion 31 is the circumferential direction based on the axis of the handle portion 3, and switching is achieved by sliding it in the circumferential direction. A cam portion 52 provided at the front end of the switching transmission mechanism 5 can be rotated in the same direction as the operation direction of the switching operation portion 31. By providing the switching operation unit 31 on the handle unit 3, the user can operate the switching operation unit 31 with their thumb while holding the handle unit 3 (specifically, while gripping the handle unit 3 with the four fingers other than the thumb). This is advantageous because the user does not need to change the way they hold the handle unit 3 in order to switch the ratchet mechanism 22. The handle unit 3 is cylindrical and houses the mechanism shown in Figure 3 inside. The axial direction of the handle unit 3 is perpendicular to the central axis of rotation of the output unit 21 and extends in a radial direction (linear direction) based on the central axis of rotation.

[0031] Since the switching operation unit 31 is provided in the handle unit 3 away from the head unit 2, the switching operation unit 31 and the head unit 2 are connected by a switching transmission mechanism 5. This switching transmission mechanism 5 is capable of transmitting a displacement for switching the ratchet mechanism 22. This switching transmission mechanism 5 has a long portion 51 which is a tubular rotating shaft that extends from the handle unit 3, through the connecting portion 4, and across to the head unit 2. The switching displacement caused by operating the switching operation unit 31 is transmitted to the output unit 21 as a circumferential displacement via this long portion 51. Because the displacement can be transmitted by the long portion 51 in this way, the configuration of the ratchet handle 1 can be simplified.

[0032] The switching operation unit 31 is fixed to the rear end of the long portion 51. On the other hand, the cam portion 52 is fixed to the front end. Therefore, the cam portion 52 can be moved in the circumferential direction by an angle through which the switching operation unit 31 is operated in the circumferential direction, and accordingly, one of the pair of ratchet claws 221 can be moved in accordance with the operation of the switching operation unit 31.

[0033] The handle unit 3 of this embodiment has a rotation operation unit 32 that inputs a rotational force to rotate the output unit 21. This rotation operation unit 32 is a part that allows the user to input a rotational force without rotating the handle unit 3. This rotation operation unit 32 allows the user to rotate the rotary fastener more quickly than when the user rotates the handle unit 3 around the output unit 21, since the diameter of the rotation operation unit 32 is smaller than the rotation diameter of the handle. Therefore, the rotary fastener can be rotated at an increased rotation speed during periods when no tightening torque is applied to the rotary fastener (early in the case of tightening, and later in the case of loosening), thereby shortening the work time. Note that when tightening torque is applied, the rotary fastener is rotated by turning the handle unit 3 without rapid rotation.

[0034] Conventionally, ratchet wrenches have been available that are equipped with a rotation operation part 32 for rapid rotation (see Patent Document 1). However, this conventional rotation input part was located adjacent to the engagement part that engages with the rotary fastener. As a result, in order to perform rapid rotation, the user had to change the hand holding the handle or operate the wrench with the hand opposite to that holding the handle. This time-consuming process resulted in poor work efficiency for rapid rotation. In contrast, in this embodiment, the handle part 3 has the rotation operation part 32, which is advantageous because the user does not have to move their hand significantly to operate the rotation operation part 32 when performing rapid rotation.

[0035] A plurality of rotation operation units 32 are provided on the handle unit 3. This configuration allows the user to select the most convenient one from the plurality of handle units 3 depending on the situation. In this embodiment, two rotation operation units 32 are provided on the handle unit 3. One of the rotation operation units 32, the side operation unit 32a, is provided near the front side of the handle unit 3, and the other rotation operation unit 32, the rear operation unit 32b, is provided at the rear end of the handle unit 3. A single rotation operation unit 32 may be configured to serve as both the side operation unit 32a and the rear operation unit 32b by attaching it to the handle unit 3. Each rotation operation unit 32 is disc-shaped, and the outer periphery may be grooved or knurled as shown in the figure to prevent slipping. The rotation operation unit 32 is also detachable from the handle unit 3. Specifically, the side operating unit 32a is detachably attached to a portion of a side rotating member 65 having a bevel gear 63, which protrudes to the side of the handle unit 3, and the rear operating unit 32b is formed at the rear of a rear rotating member 66 connected to the rear end of the transmission shaft 61, and is detachably attached to a recess located inside the handle unit 3. The rotation operating unit 32 is attached to the handle unit 3 by fitting. With this configuration, after removing the rotation operating unit 32 from the handle unit 3, it is possible to connect a drive shaft, which is a rotation drive member of another power source such as an electric tool, to the rotational force transmission mechanism 6 and rotate the rotation drive shaft, thereby performing rapid rotation.

[0036] Here, the positional relationship between the rotation operation unit 32 and the switching operation unit 31 will be described. The switching operation unit 31 and the rotation operation unit 32 are provided at the same position in the longitudinal direction of the handle unit 3 but at different positions in the circumferential direction. This positional relationship makes it easy to operate both. Note that having the switching operation unit 31 and the rotation operation unit 32 at the same position in the longitudinal direction of the handle unit 3 has the advantage of providing a neat appearance, but this positional relationship is not essential, and they may be at different positions in the longitudinal direction. Furthermore, with respect to the direction of the position where the output unit 21 transmits rotational force to the rotary fastener relative to the head unit 2 (the protruding direction of the output unit 21 on the head unit 2), the rotation operation unit 32 is located in the same direction, and the switching operation unit 31 is located in the opposite direction. This positional relationship provides good operability in relation to the rotation operation of the rotary fastener.

[0037] Since the rotation operation unit 32 is provided on the handle unit 3, this embodiment includes a rotational force transmission mechanism 6 that is provided from the handle unit 3 through the connecting unit 4 and across the head unit 2 and transmits the rotational force applied to the rotation operation unit 32 to the output unit 21. The rotational force transmission mechanism 6 of this embodiment has a transmission shaft 61 that extends linearly from the rear of the handle unit 3 to the output unit 21 of the head unit 2. Note that the transmission shaft 61 located on the rear side of the handle unit 3 is provided for the rear operation unit 32b, so if the rear operation unit 32b is not provided, the transmission shaft 61 in this portion does not need to be provided. The transmission shaft 61 is supported on the exterior portion so as to rotate around a fixed axis. The rear operation unit 32b is connected to the transmission shaft 61 without a gear. However, the rear operation unit 32b is detachable from the transmission shaft 61 (more specifically, the rear rotation member 66).

[0038] The side operation unit 32a is connected to the transmission shaft 61 via a pair of bevel gears 62, 63 that mesh at right angles. For this reason, one bevel gear 62 is provided on the transmission shaft 61. This bevel gear 62 is provided adjacent to and rearward of the switching operation unit 31. For this reason, the switching operation unit 31 and the rotation operation unit 32 can be disposed at the same position in the longitudinal direction of the handle unit 3. The other bevel gear 63 interlocks with the side operation unit 32a. Note that the side operation unit 32a is detachable from the side rotation member 65 that has the bevel gear 63.

[0039] A bevel gear 64 is also provided at the front end of the transmission shaft 61 (not shown in FIG. 5). This bevel gear 64 is integrally provided with the output unit 21 and meshes with a quick-turning toothed portion 212 that faces the direction in which the output unit 21 projects from the head unit 2. The gear ratio between the bevel gear 64 and the quick-turning toothed portion 212 (i.e., the reduction ratio of the quick-turning mechanism) can be set as desired. With the rotational force transmission mechanism 6 configured as described above, the rotational force applied to the side operation unit 32a or the rear operation unit 32b can be transmitted to the output unit 21 via the transmission shaft 61.

[0040] In this embodiment, the long portion 51 of the switching transmission mechanism 5 and the rotational force transmission mechanism 6 are arranged in parallel. The parallel arrangement allows the switching transmission mechanism 5 to be arranged compactly.

[0041] In this embodiment, the switching transmission mechanism 5 (long portion 51) and the rotational force transmission mechanism 6 are configured as a composite transmission body 7, which is a combination of a tubular portion 7o extending from the handle portion 3 to the head portion 2 and a rod-shaped portion 7i partially passing through the internal space of the tubular portion 7o. In other words, in this embodiment, the outer (tubular portion 7o) and inner (rod-shaped portion 7i) radially arranged in parallel. The tubular portion 7o and the rod-shaped portion 7i are not in close contact with each other, but are spaced apart radially so that they can operate (rotate) independently. The axial centers of the tubular portion 7o and the rod-shaped portion 7i are aligned, and the tubular portion 7o moves circumferentially while being guided by the rod-shaped portion 7i within the tubular portion 7o. As shown in FIG. 3, the switching transmission mechanism 5 (long portion 51) and the rotational force transmission mechanism 6 are combined into a single unit. Since the rod-shaped portion 7i is built into the tubular portion 7o, the combination can be made more compact.

[0042] One of the tubular portion 7o and the rod-shaped portion 7i belongs to the switching transmission mechanism 5, and the other belongs to the rotational force transmission mechanism 6. In this embodiment, the radially outer tubular portion 7o belongs to the switching transmission mechanism 5 (corresponding to the long portion 51), and the radially inner rod-shaped portion 7i belongs to the rotational force transmission mechanism 6 (corresponding to the transmission shaft 61).

[0043] In this embodiment, the axial direction of the rotation center axis of the rotation operation unit 32 is perpendicular to the axial direction of the combination of the tubular body and the rod-shaped body (composite transmission body 7). This configuration is advantageous because it improves operability when rotating the rotation operation unit 32.

[0044] Although one embodiment of the present invention has been described above, the present invention is not limited to the above embodiment, and various modifications can be made within the scope of the gist of the present invention.

[0045] For example, the ratchet rotary tool (ratchet handle 1) in the above embodiment was a manual type, but it can also be an electric type with a built-in motor and transmission mechanism. In the electric type, the handle portion 3 is turned by the user when applying tightening torque to a rotary fastener, but in other situations, the driving force of the motor is transmitted to the output portion 21, so the user only needs to place their hand on the handle portion 3.

[0046] Furthermore, although the output portion 21 is configured to protrude from the head portion 2, it may be recessed or formed as a through-hole in the head portion 2. Furthermore, instead of being a detachable socket, the output portion 21 may be configured to directly engage with a rotary fastener.

[0047] Furthermore, the displacement transmitted to the output section 21 via the long section 51 is displacement in the circumferential direction. However, it may be displacement in the longitudinal direction. Therefore, the long section 51 may be a wire that transmits displacement by tension. [Explanation of symbols]

[0048] 1 Ratchet rotary tool (ratchet handle) 2 Head 21 Output section 22 Ratchet mechanism 3 Handle 31 Switching operation section 32 Rotation control unit 32a Side control section 32b Rear control section 4 Connecting part 5. Switching transmission mechanism 51 Long section 6 Rotational force transmission mechanism 7. Composite transmitter 7o tubular part 7i Rod-shaped part

Claims

1. a head portion having an output portion capable of applying a rotational force to a rotary fastener that performs a fastening action when rotated; a handle portion that is connected to the head portion via a connecting portion and that is held by a user when rotating the rotary fastener, the connecting portion is a portion whose diameter is reduced relative to the head portion and the handle portion, the head portion has a ratchet mechanism that limits the direction of the rotational force exerted on the rotary fastener of the output portion, The handle portion has a switching operation portion for performing a switching operation of the ratchet mechanism, the switching operation unit and the head unit are connected by a switching transmission mechanism so as to be able to transmit a displacement for the switching; the switching transmission mechanism has a long portion extending from the handle portion to the head portion, a displacement for switching caused by operating the switching operation unit is transmitted to the ratchet mechanism via the elongated portion as a displacement in a longitudinal direction or a displacement in a circumferential direction, the handle portion has a rotation operation portion for inputting a rotational force for rotating the output portion, a rotational force transmission mechanism provided from the handle portion to the head portion and configured to transmit the rotational force applied to the rotation operation unit to the output unit; A ratchet rotary tool in which the long portion of the switching transmission mechanism and the rotational force transmission mechanism are arranged in parallel over the entire length of the connecting portion.

2. a combination of a tubular portion extending from the handle portion to the head portion and a rod portion passing through an internal space of the tubular portion; The ratchet rotary tool according to claim 1 , wherein one of the tubular portion and the rod-shaped portion belongs to the switching transmission mechanism, and the other belongs to the rotational force transmission mechanism.

3. a head portion having an output portion capable of applying a rotational force to a rotary fastener that performs a fastening action when rotated; a handle portion provided continuously with the head portion and held by a user when rotating the rotary fastener, the head portion has a ratchet mechanism that limits the direction of the rotational force exerted on the rotary fastener of the output portion, The handle portion has a switching operation portion for performing a switching operation of the ratchet mechanism, the switching operation unit and the head unit are connected by a switching transmission mechanism so as to be able to transmit a displacement for the switching; the switching transmission mechanism has a long portion extending from the handle portion to the head portion, a displacement for switching caused by operating the switching operation unit is transmitted to the ratchet mechanism via the elongated portion as a displacement in a longitudinal direction or a displacement in a circumferential direction, the handle portion has a rotation operation portion for inputting a rotational force for rotating the output portion, a rotational force transmission mechanism provided from the handle portion to the head portion and configured to transmit the rotational force applied to the rotation operation unit to the output unit; the elongated portion of the switching transmission mechanism and the rotational force transmission mechanism are arranged in parallel, a combination of a tubular portion extending from the handle portion to the head portion and a rod portion passing through an internal space of the tubular portion; A ratchet rotary tool in which one of the tubular portion and the rod-shaped portion belongs to the switching transmission mechanism, and the other belongs to the rotational force transmission mechanism.

4. a head portion having an output portion capable of applying a rotational force to a rotary fastener that performs a fastening action when rotated; a handle portion provided continuously with the head portion and held by a user when rotating the rotary fastener, the head portion has a ratchet mechanism that limits the direction of the rotational force exerted on the rotary fastener of the output portion, The handle portion has a switching operation portion for performing a switching operation of the ratchet mechanism, the switching operation unit and the head unit are connected by a switching transmission mechanism so as to be able to transmit a displacement for the switching; the handle portion has a rotation operation portion for inputting a rotational force for rotating the output portion, a rotational force transmission mechanism provided from the handle portion to the head portion and configured to transmit the rotational force applied to the rotation operation unit to the output unit; The rotary operation unit is provided in plurality on the handle unit, A ratchet rotary tool, wherein a rotational force input to each of the plurality of rotation operation units is input to the rotational force transmission mechanism.

5. The rotation operation unit is detachable from the handle unit, The ratchet rotary tool according to claim 4 , wherein the rotational force transmission mechanism is connectable to a rotational drive member of another power source when the rotation operation unit is detached from the handle unit.

6. 6. The ratchet rotary tool according to claim 4, wherein the handle portion is elongated, and the rotation operation portion and the switching operation portion are provided at different positions in a circumferential direction of the handle portion.

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