WO2023053856A1

WO2023053856A1 - Ratchet rotary tool

Info

Publication number: WO2023053856A1
Application number: PCT/JP2022/033338
Authority: WO
Inventors: 二郎田口; 章裕中島; 秀二吉岡
Original assignee: 株式会社ベッセル工業
Priority date: 2021-09-29
Filing date: 2022-09-06
Publication date: 2023-04-06
Also published as: JP2023049686A

Abstract

Provided is a ratchet rotary tool comprising: a head section having an output part that can impart a rotational force onto a rotating fastener that can carry out a fastening action by being rotated; and a handle section that is provided continuous with the head section and is held by a user when carrying out an operation of rotating the rotating fastener. The head section has a ratchet mechanism that limits the direction of the rotational force exerted by the rotating fastener of the output part. The handle section has a switching operation unit for carrying out a switching operation on the ratchet mechanism by changing the position. The ratchet rotary tool further comprises a switching transmission mechanism. The switching operation unit and the head section are coupled in a manner enabling transmission of a displacement for the switching by the switching transmission mechanism.

Description

ratchet rotary tool

Cross-reference to related applications

This application claims priority based on Japanese Patent Application No. 2021-159579, and is incorporated herein by reference.

The present invention relates to a ratchet rotating tool.

For example, Japanese Patent Application Laid-Open No. 2017-13181 describes a ratchet wrench as a ratchet rotary tool having a ratchet mechanism. According to this ratchet wrench, the engaging part, which is the part that engages with the rotary fastener (bolt, nut, etc.), can be made to apply a rotational force to the rotary fastener in one of the tightening direction and the loosening direction. , in the reverse direction, the engaging portion is switched so as not to rotate due to idle rotation.

In the ratchet wrench described in the above document, the direction in which the engaging portion applies the rotational force to the rotating fastener is limited to one direction by the ratchet mechanism, and a switching lever is provided for idle rotation in the other direction. By changing the direction of the switching lever, it is possible to limit the direction in which the engaging portion imparts the rotational force to the rotary fastener to the tightening direction or the loosening direction.

Conventionally, this switching lever was provided near the engagement part. For this reason, in order to switch the direction of rotation, the user has to switch the hand that grips the steering wheel or operate the steering wheel with the opposite hand, which takes time and effort. Work efficiency for direction switching was not good.

Japanese Patent Application Laid-Open No. 2017-13181 (Fig. 1)

Therefore, an object of the present invention is to provide a ratchet rotary tool with improved work efficiency for switching to limit the direction of rotation.

The present invention includes a head portion having an output portion capable of applying a rotational force to a rotating fastener that performs a fastening action when rotated; A ratchet rotary tool comprising: a handle portion for a user to hold when performing a task to rotate the output portion, wherein the head portion defines 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 by changing the position thereof, the ratchet rotary tool further has a switching transmission mechanism, and the switching operation portion and The head portion is a ratchet rotating tool, which is connected to the switching transmission mechanism so as to be able to transmit the displacement for the switching.

Further, 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 operation portion is transmitted through the long portion. , as a longitudinal displacement or a circumferential displacement to the output.

Further, the handle portion has a rotation operation portion for inputting a rotational force for rotating the output portion, and is provided from the handle portion to the head portion so as to apply the rotation force applied to the rotation operation portion to the head portion. A rotational force transmission mechanism for transmitting to an output portion may be provided, and the long portion of the switching transmission mechanism and the rotational force transmission mechanism may be arranged in parallel.

Further, a combination of a tubular portion extending from the handle portion to the head portion and a rod-shaped portion passing through an inner space of the tubular portion is provided, and one of the tubular portion and the rod-shaped portion belongs to the switching transmission mechanism. , and the other belong to the rotational force transmission mechanism.

Here, the ratchet wrench described in Japanese Patent Application Laid-Open No. 2017-13181 is a manual type, and the rotation speed of the rotary fastener is adjusted during the period when tightening torque is not applied (early in the case of tightening, late in the case of loosening). A quick-turn mechanism is provided for raising and shortening the working time. This quick turn mechanism has a dial-like rotary input that allows the engagement portion to be turned directly without turning the handle. The rotation input portion is provided adjacent to the engaging portion. For this reason, in order to rotate the handle quickly, the user must change the hand that grips the steering wheel or operate the handle with the opposite hand. Work efficiency was not good.

In view of the above situation, the present invention provides the ratchet rotary tool, wherein the handle portion has a rotation operation portion for inputting a rotational force for rotating the output portion, and the handle portion is provided from the handle portion to the head portion. 1. A ratchet rotary tool comprising a rotational force transmission mechanism for transmitting a rotational force applied to said rotational operation portion to said output portion.

Also, a plurality of the rotation operation portions may be provided on the handle portion.

Further, the rotary operation portion is detachable from the handle portion, and the rotary force transmission mechanism operates as a rotary drive member of another power source in a state in which the rotary operation portion is detached from the handle portion. can be connected.

Further, 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.

FIG. 1 is a perspective view of a ratchet handle according to one embodiment of the present invention, viewed from the side of the output section (the back side seen by the user during use). FIG. 2 is a perspective view of the ratchet handle seen from the side opposite to the output portion (the front side seen from the user during use). FIG. 3 is a perspective view showing a state in which the exterior is removed in the state of FIG. FIG. 4 is a longitudinal sectional view showing a state cut along the axis of the handle portion. FIG. 5 is a perspective view showing components around the ratchet claw.

Next, the present invention will be described by taking up the ratchet handle 1, which is a manual ratchet rotating tool, as an embodiment. This ratchet handle 1 is used for tightening or loosening a rotary fastener (bolt, nut, etc.) (not shown) that performs a fastening action by being rotated, as is the case with conventional ratchet handles.

FIG. 1 shows a perspective view of the ratchet handle 1 of this embodiment as seen from the side of the output portion 21 (back side when in use), and FIG. FIG. 3 shows a perspective view showing the internal structure with the exterior removed in the state shown in FIG. 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, the handle portion 3, and the connecting portion 4 are arranged in a straight line. Regarding the front-to-rear direction of the ratchet handle 1, the head portion 2 side is defined as the front side, and the handle portion 3 side is defined as the rear side.

The head portion 2 has an output portion 21 capable of imparting 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 portion of the head portion 2 (the portion of the output portion 21 in which the base portion 21a is embedded). The output section 21 is switched between a rotatable state and a non-rotatable state about the axis of the head section 2 by a ratchet mechanism 22, which will be described later, and the direction of rotation is limited. A socket (not shown) is detachable from the output section 21 . This socket corresponds to the shape of the engaged portion (bolt head, etc.) of the rotary fastener. With the socket engaged with the rotary fastener, the user holds the handle portion 3 and rotates the output portion 21 about the axis of the output portion 21 so that the rotation generated by the user is transmitted from the output portion 21 through the socket. A force can be applied to the rotating fastener. At this time, the output portion 21 of the head portion 2 is in a non-rotatable state.

The head section 2 has a ratchet mechanism 22 that limits the direction of the rotational force exerted on the rotary fastener of the output section 21 . The operation and function of the ratchet mechanism 22 are conventional. In this embodiment, as shown in FIG. 3 , the ratchet teeth 211 are positioned so as to sandwich an imaginary line connecting the rotation centers of the handle portion 3 and the output portion 21 with respect to the ratchet tooth portion 211 integrally provided on the outer periphery of the output portion 21 . It has a pair of ratchet claws 221 . As shown in FIG. 5, the ratchet claw 221 is a claw-like member that rotates within the head portion 2 around a rotation support portion 2213 within a predetermined range (indicated by an arrow). The ratchet claw 221 has claw-side teeth 2212 at its tip. The ratchet claw 221 has an engaged projection 2211 protruding toward the imaginary line at its base side, and the engaged projection 2211 is a step (a step) of a cam portion 52 provided at the front end of the switching transmission mechanism 5, which will be described later. (or mountain) 521 can cause the movement related to the rotation. A return spring 222 is attached to the ratchet claw 221 , and when it is not pushed by the cam portion 52 , it returns to its original position by the spring force of the return spring 222 . The cam portion 52 presses only one or the other engaged protrusion 2211 of the pair of ratchet claws 221 . The claw-side teeth 2212 of one of the pair of ratchet claws 221 mesh with the ratchet teeth 211 of the output section 21 to prevent the output section 21 from rotating in one direction, and the claw-side teeth 2212 are engaged with the output section. 21 allows rotation in the other direction. For example, the ratchet claw 221 illustrated at the lower left in FIG. 3 prevents counterclockwise rotation of the output portion 21 and allows clockwise rotation. The ratchet claw 221 shown in the upper right in FIG. 3 prevents clockwise rotation of the output portion 21 and permits counterclockwise rotation. As a result, the output portion 21 is fixed to the head portion 2 so as not to rotate in the one direction, and the user holds the handle portion 3 in that state and rotates the output portion 21 around the axis to generate a rotational force. can be transmitted from the output 21 to the rotating fastener. On the other hand, when the handle portion 3 is turned in the opposite direction, the claw-side tooth portion 2212 climbs over the ratchet tooth portion 211 of the output portion 21 as described above, thereby causing the output portion 21 to rotate (idle) in the head portion 2. Therefore, no rotational force is transmitted from the output portion 21 to the rotary fastener.

The handle part 3 is provided indirectly or directly in continuation with the head part 2, and is an elongated part that the user holds when performing the work of 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 is a portion whose diameter is narrowed with respect to the head portion 2 and the handle portion 3, and as shown in FIG. there is The handle portion 3 has a switching operation portion 31 for performing a switching operation to limit the rotation direction of the ratchet mechanism 22 by changing the position of the handle portion 31 by the user. In the conventional ratchet handle, the switching operation part 31 is provided in the head part 2, but in this embodiment, it is provided in the handle part 3. As shown in FIG. The operation direction of the switching operation portion 31 is the circumferential direction with respect to the axial center of the handle portion 3, and switching is performed by sliding movement in the circumferential direction. A cam portion 52 provided at the front end portion of the switching transmission mechanism 5 can be rotated in the same direction as the operation direction of the switching operation portion 31 . Since the switching operation section 31 is provided on the handle section 3, the user can hold the handle section 3 (specifically, while holding the handle section 3 with four fingers other than the thumb) and press the thumb. can be used to operate the switching operation unit 31 . Therefore, it is not necessary for the user to change the grip of the handle portion 3 for the switching operation of the ratchet mechanism 22, which is advantageous. The handle portion 3 is a tubular body, and the mechanism shown in FIG. 3 is accommodated therein. The handle portion 3 has an axial direction orthogonal to the rotation center axis of the output portion 21 and extends in a radial direction (linear direction) with the rotation center axis as a reference.

Since the switching operation part 31 is provided on the handle part 3 away from the head part 2 , the switching operation part 31 and the head part 2 are connected by the switching transmission mechanism 5 . The switching transmission mechanism 5 can transmit displacement for switching the ratchet mechanism 22 . The switching transmission mechanism 5 has an elongated portion 51 which is a tubular rotary shaft extending from the handle portion 3 through the connecting portion 4 and over the head portion 2 . A displacement for switching caused by the operation of the switching operation portion 31 is transmitted to the output portion 21 as displacement in the circumferential direction via the long portion 51 . Since displacement can be transmitted by the long portion 51 in this manner, the structure of the ratchet handle 1 can be simplified.

A switching operation portion 31 is fixed to the rear end portion of the long portion 51 . On the other hand, a cam portion 52 is fixed to the front end portion. Therefore, the cam portion 52 can be moved in the circumferential direction by an angle corresponding to the operation of the switching operation portion 31 in the circumferential direction. You can move the other side.

The handle portion 3 of this embodiment has a rotation operation portion 32 for inputting a rotational force for rotating the output portion 21 . The rotation operation portion 32 is a portion that can input a rotation force without rotating the handle portion 3 . Compared to turning the handle part 3 around the output part 21 by the user, the rotary operation part 32 rotates the rotary fastener quickly because the diameter of the rotary operation part 32 is smaller than the rotation diameter of the handle. Is possible. Therefore, in the period when tightening torque is not applied to the rotary fastener (in the early stage in the case of tightening and in the latter period in the case of loosening), the rotational speed of the rotary fastener is increased and the work time can be shortened. When tightening torque is applied, the rotary fastener is rotated by turning the handle portion 3 without performing rapid turning.

Here, there has conventionally existed a ratchet wrench that is provided with a rotating operation part 32 and can be turned quickly (see Japanese Patent Application Laid-Open No. 2017-13181). However, this conventional rotary input portion is provided adjacent to the engagement portion, which is the portion that engages the rotary fastener. For this reason, in order to rotate the handle quickly, the user must change the hand that grips the steering wheel or operate the handle with the opposite hand. Work efficiency was not good. On the other hand, in this embodiment, since the handle portion 3 has the rotary operation portion 32, the user does not need to move his or her hand greatly to operate the rotary operation portion 32 for fast turning, which is advantageous. be.

A plurality of rotation operation portions 32 are provided on the handle portion 3 . With this configuration, a user-friendly handle can be selected and used from a plurality of handle portions 3 according to the situation. Two rotation operation portions 32 of the present embodiment are provided on the handle portion 3, and the side operation portion 32a, which is one of the rotation operation portions 32, is provided near the front of the side portion of the handle portion 3, A rear operating portion 32 b , which is the other rotating operating portion 32 , is provided at the rear end portion of the handle portion 3 . A configuration may be adopted in which the number of the rotary operation portion 32 is one, and by replacing it with the handle portion 3, it serves as both the side operation portion 32a and the rear operation portion 32b. Each rotary operation portion 32 is disk-shaped, and the outer peripheral surface thereof can be grooved or knurled to prevent slipping. Also, the rotary operation portion 32 is detachable from the handle portion 3 . Specifically, the side operation portion 32a is detachable from a portion of the side rotation member 65 having the bevel gear 63, which protrudes to the side of the handle portion 3, and the rear operation portion 32b is It is formed in the rear portion of a rear rotating member 66 connected to the rear end of the transmission shaft 61 and is detachable from a recess located inside the handle portion 3 . The attachment of the rotary operation portion 32 to the handle portion 3 is performed by fitting. With this configuration, the rotary operation portion 32 is removed from the handle portion 3, and the drive shaft, which is a rotary drive member of another power source such as an electric tool, is connected to the rotary force transmission mechanism 6 to rotate the rotary drive shaft. By doing so, fast forwarding can also be performed.

Here, the positional relationship between the rotation operation section 32 and the switching operation section 31 will be described. The switching operation portion 31 and the rotation operation portion 32 are provided at the same position in the longitudinal direction of the handle portion 3 and at different positions in the circumferential direction. Due to such a positional relationship, it is easy to operate both. It should be noted that the switching operation portion 31 and the rotation operation portion 32 are located at the same position in the longitudinal direction of the handle portion 3, so that there is an advantage that the appearance can be improved. may be in different positions. In addition, the rotation operation part 32 is arranged in the same direction as the direction of the position where the rotational force of the output part 21 is transmitted to the rotary fastener with respect to the head part 2 (projection direction of the output part 21 in the head part 2). position, and the switching operation part 31 is positioned in the opposite direction. Due to such a positional relationship, the operability is good in relation to the rotating operation of the rotary fastener.

As the rotary operation part 32 is provided in the handle part 3, in the present embodiment, it is provided from the handle part 3 to the head part 2 through the connection part 4, and outputs the rotational force applied to the rotary operation part 32. A rotational force transmission mechanism 6 for transmission to the portion 21 is provided. The rotational force transmission mechanism 6 of this embodiment has a transmission shaft 61 that extends linearly from the rear portion of the handle portion 3 to the output portion 21 of the head portion 2 . Since the transmission shaft 61 located on the rear side of the handle portion 3 is provided for the rear operation portion 32b, if the rear operation portion 32b is not provided, the transmission shaft 61 for this portion is provided. You don't have to. The transmission shaft 61 is supported by the exterior part so as to rotate around a fixed axis. The rear operation portion 32b is connected to the transmission shaft 61 without a gear. However, the rear operating portion 32b is detachable from the transmission shaft 61 (specifically, the rear rotating member 66).

The side operation portion 32a is connected to the transmission shaft 61 via a pair of

bevel gears

62, 63 that mesh in a perpendicular relationship. Therefore, one bevel gear 62 is provided on the transmission shaft 61 . The bevel gear 62 is provided behind the switching operation portion 31 and adjacent thereto. Therefore, the switching operation portion 31 and the rotation operation portion 32 can be arranged at the same position in the longitudinal direction of the handle portion 3 . Another bevel gear 63 is interlocked with the side operation portion 32a. The side operating portion 32a is detachable from the side rotating member 65 having the bevel gear 63. As shown in FIG.

A bevel gear 64 is also provided at the front end of the transmission shaft 61 (not shown in FIG. 5). The bevel gear 64 is provided integrally with the output portion 21 and meshes with a quick-rotation tooth portion 212 that faces the projecting direction of the output portion 21 from the head portion 2 . The gear ratio between the bevel gear 64 and the quick-rotation tooth portion 212 (that is, the speed reduction ratio of the quick-rotation mechanism) can be set arbitrarily. The rotational force transmission mechanism 6 configured as described above can transmit the rotational force applied to the side operation portion 32 a or the rear operation portion 32 b to the output portion 21 via the transmission shaft 61 .

In this embodiment, the long portion 51 of the switching transmission mechanism 5 and the rotational force transmission mechanism 6 are arranged in parallel. Due to the parallel arrangement, the switching transmission mechanism 5 can be arranged compactly.

With respect to the parallel arrangement, the switching transmission mechanism 5 (long portion 51) and the rotational force transmission mechanism 6 of the present embodiment are arranged such that the tubular portion 7o extending from the handle portion 3 to the head portion 2 and the inner space of the tubular portion 7o are integrated. It is configured as a composite transmission body 7 which is a combination with a rod-shaped portion 7i through which a portion is passed. That is, in the present embodiment, the outer portion (tubular portion 7o) and the inner portion (rod portion 7i) in the radial direction are arranged in parallel. The tubular portion 7o and the rod-shaped portion 7i are not in close contact with each other, and are spaced apart in the radial direction 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 in the circumferential direction while being guided by the rod-shaped portion 7i inside. As shown in FIG. 3, the combination of the switching transmission mechanism 5 (long portion 51) and the rotational force transmission mechanism 6 is integrated into one. Since the rod-shaped portion 7i is built in the tubular portion 7o, the combination can be made more compact.

One of the tubular portion 7 o and the rod-shaped portion 7 i 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 (corresponds to the long portion 51), and the radially inner rod portion 7i belongs to the rotational force transmission mechanism 6 (corresponds to the transmission shaft 61). .

Further, in the present embodiment, the axial direction of the central axis of rotation of the side operating portion 32a in the rotary operating portion 32 is orthogonal to the axial direction of the combination of the tubular body and the rod-shaped body (composite transmission body 7). . This configuration is advantageous in terms of good operability when rotating the side operation portion 32a.

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 without departing from the gist of the present invention.

For example, the ratchet rotary tool (ratchet handle 1) of the above embodiment was manual, but it may be electric with a built-in motor and transmission mechanism. In the case of an electric type, the handle portion 3 is turned by the user when tightening torque is applied to the rotating fastener, but in other situations, the driving force of the motor is transmitted to the output portion 21, so the handle portion 3 need only be touched by the user.

Further, although the output portion 21 is configured to protrude from the head portion 2, it may be recessed from the head portion 2 or may be formed as a through hole. Moreover, instead of the socket detachable type, the output portion 21 may be configured to be directly engaged with a rotary fastener.

Also, the displacement transmitted to the output portion 21 via the long portion 51 was displacement in the circumferential direction. However, it may also be a displacement in the longitudinal direction. Therefore, the elongated portion 51 may be a wire that transmits displacement by pulling.

The configuration and action of the above embodiment will be collectively described below. Said embodiment comprises a head part 2 having an output part 21 capable of imparting a rotational force to a rotary fastener that performs a fastening action by being rotated; A ratchet rotary tool 1 comprising a handle portion 3 held by a user when performing a task of rotating a fastener, wherein said head portion 2 exerts said rotation on said rotating fastener of said output portion 21. It has a ratchet mechanism 22 that limits the direction of force, the handle part 3 has a switching operation part 31 for performing a switching operation of the ratchet mechanism 22 by changing the position, and the ratchet rotary tool 1 is The ratchet rotary tool 1 further includes a switching transmission mechanism 5 , and the switching operation part 31 and the head part 2 are connected by the switching transmission mechanism 5 so as to be able to transmit the displacement for switching.

According to this configuration, since the switching operation portion 31 is provided on the handle portion 3, the user does not need to switch the handle portion 3 for switching operation of the ratchet mechanism 22.

Further, the switching transmission mechanism 5 has a long portion 51 extending from the handle portion 3 to the head portion 2, and the displacement for the switching caused by the operation of the switching operation portion 31 is Through the elongated portion 51, the displacement in the longitudinal direction or the displacement in the circumferential direction may be transmitted to the output portion 21. FIG.

According to this configuration, displacement can be transmitted by the long portion 51, so the configuration of the switching transmission mechanism 5 can be simplified.

Further, the handle portion 3 has a rotation operation portion 32 for inputting a rotational force for rotating the output portion 21 . A rotational force transmission mechanism 6 for transmitting the rotational force thus obtained to the output portion 21 may be provided, and the long portion 51 of the switching transmission mechanism 5 and the rotational force transmission mechanism 6 may be arranged in parallel.

According to this configuration, the long portion 51 of the switching transmission mechanism 5 and the rotational force transmission mechanism 6 are arranged in parallel, so that they can be arranged compactly.

Further, a combination of a tubular portion 7o extending from the handle portion 3 to the head portion 2 and a rod-shaped portion 7i passing through the inner space of the tubular portion 7o is provided, and one of the tubular portion 7o and the rod-shaped portion 7i is provided. belongs to the switching transmission mechanism 5 and the other belongs to the rotational force transmission mechanism 6 .

According to this configuration, since the rod-shaped portion 7i is built in the tubular portion 7o, it can be made more compact.

In view of the above circumstances, in the ratchet rotary tool 1, the handle portion 3 has a rotation operation portion 32 for inputting a rotational force for rotating the output portion 21, and the handle portion 3 The ratchet rotary tool is provided over the head portion 2 and includes a rotational force transmission mechanism 6 for transmitting the rotational force applied to the rotational operation portion 32 to the output portion 21 .

According to this configuration, the rotary fastener can be quickly turned by the rotary operation part 32, and the user does not have to move his/her hand significantly in order to operate the rotary operation part 32 when quickly turning.

Also, a plurality of the rotation operation portions 32 may be provided on the handle portion 3 .

According to this configuration, a user-friendly handle can be selected and used from a plurality of handle portions 3 according to the situation.

Further, the rotation operation portion 32 is detachable from the handle portion 3, and the rotation force transmission mechanism 6 can be operated by another power source when the rotation operation portion 32 is detached from the handle portion 3. can be connected to the rotary drive member of

According to this configuration, it is possible to select the input of the driving force.

Also, the handle portion 3 may be elongated, and the rotation operation portion 32 and the switching operation portion 31 may be provided at different positions in the circumferential direction of the handle portion 3 .

With this configuration, it is easy to operate both the rotation operation section 32 and the switching operation section 31 .

According to the above-described embodiment, since the switching operation portion 31 is provided on the handle portion 3, the user does not need to switch the handle portion 3 for switching operation of the ratchet mechanism 22. For this reason, it is possible to improve the work efficiency for performing switching that limits the rotation direction.

1 Ratchet rotating tool (ratchet handle)
2 Head Part 21 Output Part 22 Ratchet Mechanism 3 Handle Part 31 Switching Operation Part 32 Rotation Operation Part 32a Side Operation Part 32b Rear Operation Part 4 Connecting Part 5 Switching Transmission Mechanism 51 Long Part 6 Rotational Force Transmission Mechanism 7 Compound Transmission Body 7o Tubular portion 7i Rod-shaped portion

Claims

a head portion having an output portion capable of imparting a rotational force to a rotary fastener that is rotated to effect fastening;
A ratchet rotary tool comprising: a handle portion continuously provided to the head portion and held by a user when performing an operation of rotating the rotary fastener,
the head portion has a ratchet mechanism that limits the direction of the rotational force exerted on the rotational fastener of the output portion;
The handle portion has a switching operation portion for performing a switching operation of the ratchet mechanism by changing the position thereof,
The ratchet rotary tool further has a switching transmission mechanism, and the switching operation part and the head part are connected by the switching transmission mechanism so as to be able to transmit the displacement for the switching.
The switching transmission mechanism has an elongated portion extending from the handle portion to the head portion,
2. The displacement for switching caused by operating the switching operation portion is transmitted to the output portion as a displacement in a longitudinal direction or a displacement in a circumferential direction via the long portion. The ratchet rotating tool described in .
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 for transmitting the rotational force applied to the rotational operation portion to the output portion;
The ratchet rotary tool according to claim 2, wherein the elongated portion of the switching transmission mechanism and the torque transmission mechanism are arranged in parallel.
a combination of a tubular portion and a bar extending through the interior space of the tubular portion, extending from the handle portion to the head portion;
4. The ratchet rotary tool according to claim 3, wherein one of said tubular portion and said rod-shaped portion belongs to said switching transmission mechanism, and the other belongs to said rotational force transmission mechanism.
The handle portion has a rotation operation portion for inputting a rotational force for rotating the output portion,
2. The ratchet rotary tool according to claim 1, further comprising a rotational force transmission mechanism provided from said handle portion to said head portion for transmitting rotational force applied to said rotational operation portion to said output portion.
The ratchet rotary tool according to claim 5, wherein a plurality of said rotary operation parts are provided on said handle part.
The rotation operation section is detachable from the handle section,
7. The ratchet rotary tool according to claim 5, wherein said rotational force transmission mechanism is connectable to a rotational drive member of another power source in a state in which said rotational operation portion is detached from said handle portion.
The ratchet according to any one of claims 5 to 7, wherein the handle portion is elongated, and the rotation operation portion and the switching operation portion are provided at different positions in the circumferential direction of the handle portion. rotary tool.