JP4024291B1 - wrench - Google Patents

Abstract

Provided is a wrench capable of rotating a fastening member in the same direction in both an outward path and a return path when a handle is reciprocated for rotational movement.
A wrench (1) includes a single sun gear (3) that rotates integrally with a rotating body (2) that transmits torque to a fastening member, a single pinion type first planetary gear (12) centered on the sun gear, and a first planetary gear (12). One ring gear 11, double pinion type second planetary gears 22, 23 and second ring gear 21 centering on the sun gear, and a first claw portion 16 for restricting the rotation direction of the first ring gear in one direction, The second claw portion 26 that restricts the rotation direction of the second ring gear in the opposite direction, the first claw portion and the second claw portion are fixed, and rotate around the axis of the first ring gear and the second ring gear. A movable first handle 10, a planetary carrier 5 to which a rotary shaft 12a of the first planetary gear and rotary shafts 22a and 23a of the second planetary gear are fixed, and a second handle that can rotate integrally with the planetary carrier. 20.
[Selection] Figure 1

Description

  The present invention relates to a wrench that converts a rotational movement of a handle into a rotational movement of a fastening member such as a bolt or a nut, and more particularly to a wrench having a ratchet mechanism that regulates the rotational direction of a fastening member in one direction. Is.

  Conventionally, a wrench equipped with a ratchet mechanism has been used as a tool for rotating and removing a fastening member such as a bolt or nut. Such a wrench generally includes a gear that is provided around a rotating body that transmits torque to a fastening member, and a claw portion that is fixed to an end of a handle, and is clockwise and counterclockwise. When the handle is rotated in one of the two rotation directions, the claw portion and the gear mesh with each other, and the rotating body is rotated via the gear, while the handle is rotated in the other direction. The claw part slides on the gear and the rotating body does not rotate. This allows the fastening member to be intermittently rotated in one direction to be fastened or loosened by continuously rotating the handle back and forth without removing the wrench from the fastening member during operation. can do.

  In addition to the ratchet mechanism, a handle type or driver type tool including a planetary gear mechanism has also been proposed (see, for example, Patent Document 1 and Patent Document 2). According to such a tool, the rotation of the fastening member can be increased or decreased by setting the gear ratio of each gear constituting the planetary gear mechanism.

Japanese Utility Model Publication No. 5-2870 Japanese Patent Laid-Open No. 9-295277

  However, since the conventional ratchet wrench prevents the returning rotation of the fastening member by sliding the claw portion on the gear in any of the reciprocating motions by the rotation, the conventional ratchet wrench is used in the reciprocating motion of the handle. If the fastening member is rotated, of course, the fastening member does not rotate in the return path. Therefore, the return movement of the steering wheel was wasted. The same applies to the above-described tool in which the rotation of the fastening member is accelerated or decelerated by providing the planetary gear mechanism. Even if the rotation is accelerated by the planetary gear mechanism, the fastening is performed. It was insufficient for improving the working efficiency of detaching the working member.

  Therefore, in view of the above situation, the present invention can accelerate the rotation of the fastening member, and rotate the fastening member in the same direction in both the forward path and the backward path when the handle is reciprocated and rotated. Providing a wrench that can be used is an issue.

  In order to solve the above-described problems, the wrench according to the present invention includes a “rotating body that transmits torque to the fastening member, a single sun gear that rotates integrally with the rotating body, and a mesh with the sun gear. A single-pinion type first planetary gear capable of revolving and rotating around the sun gear, a first ring gear having internal teeth that mesh with the first planetary gear, and the sun gear meshing with the sun gear An inner pinion capable of revolving and rotating around a gear, a double pinion type second planetary gear meshed with the inner pinion and configured as an outer pinion capable of revolving and rotating around the sun gear, and the outer pinion A second ring gear having internal teeth that mesh with each other; a first claw portion that restricts the rotational direction of the first ring gear to one direction; and the rotational direction of the second ring gear, the first ring gear. Contradicts the direction of rotation A first claw portion that regulates in the direction, the first claw portion and the second claw portion are fixed, and the first claw portion is rotatable about the axis of the first ring gear and the second ring gear. A handle, a planet carrier integrated with a rotation shaft of the first planetary gear and a rotation shaft of the second planetary gear, and an axis of the first ring gear and the second ring gear integrally with the planet carrier A second handle pivotable about ".

  The “fastening member” is not particularly limited as long as it is a member that is screwed and screwed by rotation. Hexagon bolt, hexagon nut, hexagonal hole or square hole bolt, slotted or cross hole screw, hex lobe screw, etc. Can be illustrated.

  The “rotating body” is a member that transmits the rotation of the sun gear to the fastening member, and the rotating body can be provided with a mounting portion for mounting a socket that can be fitted to the fastening member. For example, in order to mount various sockets such as a hexagon socket and dodecagon socket that fits into a hexagon bolt or hex nut, and a hexagon bit socket that fits into a hexagon socket head bolt, A square columnar mounting portion having a drive angle conforming to the standard can be formed at the end of the rotating body. Alternatively, a holder-like mounting portion that can be mounted with a slotted screw head or a minus or plus driver bit that engages with the cross hole can be formed at the end of the rotating body. Furthermore, the above-described socket and driver bit may be directly provided at the end of the rotating body.

  The “first claw part” and the “second claw part” are respectively arranged in one of the two rotation directions clockwise and counterclockwise with respect to the “first ring gear” and the “second ring gear”. On the other hand, the claw portion meshes with the external teeth, and the claw portion slides on the external teeth with respect to the other rotation direction, thereby restricting the rotation direction in one direction. Moreover, each of the first claw portion and the second claw portion may have a single configuration or two or more claw portions. In addition, in order to switch the rotation direction of the 1st ring gear and the 2nd ring gear which a 1st nail | claw part and a 2nd nail | claw part respectively control, it can also be provided with a switching mechanism. In this case, the rotation directions of the first ring gear and the second ring gear are switched together, so that the rotation directions of both ring gears are always regulated in opposite directions.

  As described above, the wrench of the present invention includes a planetary gear mechanism including a first planetary gear and a first ring gear centered on a sun gear, a second planetary gear and a second planetary gear centered on the same sun gear. It has two planetary gear mechanisms by a planetary gear mechanism composed of ring gears. And since the 1st nail | claw part and the 2nd nail | claw part which control the rotation direction of a 1st ring gear and a 2nd ring gear to the opposite direction are both fixed to the 1st handle, the 1st handle is rotated. As a result, only one of the two planetary gear mechanisms operates in one rotation direction, and only the other planetary gear mechanism operates in the other rotation direction. At that time, by fixing the second handle integrated with the planet carrier, the revolution of the first planet gear and the second planet gear is fixed, the first ring gear or the second ring gear becomes the input gear, The sun gear becomes the output gear.

  As a result, the speed increasing ratio c / a (a: number of teeth of the sun gear, c: ring) regardless of which of the two clockwise and counterclockwise rotation directions is used. The number of teeth of the gear) can increase the rotation of the rotating body integrated with the sun gear.

  In addition, in the present invention, since one of the two planetary gear mechanisms is a single pinion type and the other is a double pinion type, even if the first handle is rotated in any of the two rotation directions, That is, the sun gear as the output gear rotates in the same direction regardless of which of the first ring gear and the second ring gear whose rotation is restricted in the opposite direction is used as the input gear. Therefore, when the first handle is reciprocated and rotated, the fastening member is rotated in the same direction via the rotating body in both the forward path and the backward path, and the fastening member is efficiently fastened or loosened. Can do.

  Further, the wrench of the present invention has the above-mentioned configuration, in addition to “the first claw portion is constituted by a pair of claw portions that restrict the rotation directions of the first ring gear in opposite directions, and the second claw portion. The portions are each constituted by a pair of claw portions that regulate the directions of rotation of the second ring gears in opposite directions, and at least any one of the pair of the first claw portions and the pair of the second claw portions, A spring member that is biased toward the external teeth of the first ring gear and the external teeth of the second ring gear, and the pair of first claws or / and the pair of second claws biased by the spring member And is pivotally supported by the first handle so as to be rotatable, and one of the pair of first claw portions and / or one of the pair of second claw portions is moved by rotation about the axis. And a cam body that presses against the bias of the spring member ” It can be as.

  As the “spring member”, a coil spring or a leaf spring can be used. Note that the “cam body” may be provided between the pair of first claw parts, between the pair of second claw parts, or provided on both of them. Although it is good, it is provided between a pair of claw parts urged by the spring member.

  With the above configuration, according to the present invention, the first claw portion and the second claw portion are configured by a pair of claw portions that regulate the rotation directions of the first ring gear and the second ring gear in opposite directions, respectively. Therefore, by switching from one of the pair of claws to the other, it is possible to switch the forward and reverse rotation directions of the sun gear that is the output gear. Thereby, it is not necessary to turn the wrench upside down when the fastening member is fastened or loosened, and the wrench is more convenient to use.

  In addition, since the rotation direction of the sun gear can be switched, it is possible to change the direction of rotation of the sun gear. Different types of fastening members can be fastened and loosened with a book wrench. Alternatively, two types of socket portions having different diameters and shapes can be directly provided at both end portions of the rotating body.

  Further, since the cam body is interposed between at least one pair of claw portions, and the claw portions where the cam body is interposed are urged toward the outer teeth of the ring gear, the cam body By rotating one of the pair of claws against the urging force of the spring member to separate them from the external teeth, and at the same time, only the other claw portion is pushed out of the ring gear by the urging of the spring member. Can mesh with teeth. Thus, the forward / reverse direction of rotation of the rotating body can be switched by a simple operation of rotating the simple structure of the cam body.

  Further, the wrench of the present invention has the above-described structure, and “the cam body is interposed in either one of the pair of first claw portions and the pair of second claw portions, and the other pair is connected. In a state where one of the first claw portions and one of the pair of second claw portions, and the other of the pair of first claw portions and the other of the pair of second claw portions are overlapped with each other. The claw support shaft rotatably supported by the first handle and the superimposed first claw part and second claw part from one to the other against the biasing by the spring member to the cam body And a rocking body that transmits a pressed force by a seesaw motion.

  With the above configuration, according to the present invention, the first claw portion and the claw portions on the left side of the second claw portion, both of which are a pair of claw portions, rotate around the same claw support shaft in a state where they are superposed vertically. Move. The same applies to the right claw portions. For example, when a cam body is interposed between the first claw parts and the second claw parts are connected to each other by a connecting bar, the rotational movement around the claw support shaft of the first claw part due to the pressing of the cam body. Is transmitted by the seesaw motion of the oscillating body from the first claw portion superimposed vertically to the second claw portion. As a result, the second claw portion rotates around the claw support shaft in the direction opposite to the first claw portion and is pressed by the external teeth of the second ring gear.

  Further, the rotation of the pair of second claw portions around one claw support shaft is transmitted to the other of the pair of second claw portions by the connecting bar. Accordingly, the other second claw portion rotates in the same direction around the claw support shaft and is separated from the external teeth of the second ring gear. In addition, when the cam body is interposed between the pair of second claw portions and the pair of first claw portions are connected to each other by the connecting bar, the cam body causes the second claw portion to be reversed due to the reverse relationship to the above. The force by which one is pressed is transmitted to the first claw portion that overlaps with the second claw portion, and further to the other first claw portion.

  In this way, even if one of the switching operations is performed once without switching the rotation directions of the first ring gear and the second ring gear respectively regulated by the first claw portion and the second claw portion, The other can be switched in conjunction with this. For this reason, it is possible to reduce the labor of the switching operation, and the wrench becomes more convenient to use.

  As described above, as an effect of the present invention, the rotation of the fastening member can be accelerated, and the fastening member can be rotated in the same direction in both the forward path and the backward path when the handle is reciprocated and rotated. A wrench that can be used can be provided.

  Hereinafter, a wrench which is the best embodiment of the present invention will be described with reference to FIGS. Here, FIG. 1 is an exploded perspective view of the wrench of this embodiment, FIG. 2 is a plan view of the main part of the wrench of FIG. 1, and FIG. 3 is an end view taken along line AA in FIG. 4 and 5 are explanatory views for explaining a configuration for switching the direction for restricting the rotation of the first ring gear and the second ring gear in the wrench of FIG. 1, and FIG. 6 explains the operation of the swinging body of the wrench of FIG. FIGS. 7 to 9 are explanatory diagrams for explaining the usage and operation of the wrench of FIG. In addition, the diameter of each gear shown in each drawing, the number of teeth, the ratio of the number of teeth, the shape of the tooth, etc. are examples, and are not limited thereto.

  As shown in FIGS. 1 to 3, the wrench 1 of the present embodiment includes a rotating body 2 that transmits torque to a fastening member, a single sun gear 3 that rotates integrally with the rotating body 2, and a sun gear. 3, a single pinion type first planetary gear 12 that can revolve and rotate around the sun gear 3, a first ring gear 11 having internal teeth that mesh with the first planetary gear 12, and a sun gear 2 is a double pinion type second gear constituted by an inner pinion 23 that can rotate and rotate around the sun gear 3 and mesh with the inner pinion 23, and an outer pinion 22 that can rotate and rotate around the sun gear 3. Planetary gears 22, 23, a second ring gear 21 provided with inner teeth that mesh with the outer pinion 22, a first claw portion 16 that restricts the rotational direction of the first ring gear 11 in one direction, and a second The direction of rotation of the ring gear 21 The second claw portion 26, the first claw portion 16 and the second claw portion 26, which are restricted in a direction opposite to the rotation direction of the gear wheel 11, are fixed, and the first ring gear 11 and the second ring gear 21 are around the axis. The planetary carrier 5 integrated with the rotating shaft 12a of the first planetary gear 12 and the rotating shafts 22a and 23a of the second planetary gears 22 and 23, and the planetary carrier 5 integrally. And a second handle 20 that is rotatable about the axis of the first ring gear 11 and the second ring gear 21.

  If it demonstrates in detail, the square pillar-shaped mounting part 2b which can mount | wear with a socket (not shown) is formed in the edge part of the rotary body 2 integrated with the sun gear 3. FIG. Here, the socket for general-purpose socket wrench is formed with a hole (insertion angle) having a square cross section for inserting the socket wrench. / 8 inch, 1/2 inch, 3/4 inch, 1 inch, etc. The wrench 1 of the present embodiment is configured to be applicable to a general-purpose socket for socket wrench by forming the mounting portion 2b in the shape of a square column having a size (drive angle) conforming to the standards of these sockets. Yes.

  An annular casing 19 is formed at the tip of the first handle 10, and the other end of the rotating body 2 is rotatably fitted in a hole 9 provided in the lid 4 that covers the casing. It is inserted. Note that FIG. 2 is illustrated with the lid removed in order to clearly display each component.

  In the present embodiment, four first planetary gears 12 are provided, and four sets of second planetary gears 22 and 23 constituted by an inner pinion 23 and an outer pinion 22 are also provided. The number of each planetary gear is not limited to this, and can be arbitrarily set. However, in order to stably transmit the rotation of each planetary gear to the rotating body 2, each planetary gear has three ( It is desirable that three sets or more be provided.

  The planet carrier 5 includes a disk having a hole through which the sun gear 3 can be freely inserted, a rotating shaft 12a of the first planetary gear 12 fixed to one surface of the disk, and the other surface of the disk. The rotation shafts 22a and 23a of the second planetary gears 22 and 23 are fixed to the shaft. Thus, the first ring gear 11 and the first planetary gear 12, and the second ring gear 21 and the second planetary gears 22 and 23 are configured to overlap each other with the planet carrier 5 interposed therebetween. Further, the rotating shafts 22 a and 23 a of the second planetary gears 22 and 23 are also fixed to the second handle 20, whereby the planetary carrier 5 is rotated around the axis of the first ring gear 11 and the second ring gear 21. In addition, the second handle 20 can be integrally rotated. The first ring gear 11, the first planetary gear 12, the second ring gear 21, the second planetary gears 22 and 23, and the sun gear 3 are all housed in the annular casing 19 of the first handle 10. Yes.

  The first claw portion 16 is constituted by a pair of claw portions 16R and 16L, and the second claw portion 26 is constituted by a pair of claw portions 26R and 26L. Then, the first claw portion 16R and the second claw portion 26R on the right side in a plan view are overlapped with each other so that the first claw portion 16R is on the first handle 10 side. 10 and the first claw portion 16L and the second claw portion 26L on the left side in plan view are overlapped so that the first claw portion 16L is on the first handle 10 side. The first handle 10 is supported by the shaft 6L. In the present specification, when there is no need to distinguish between the left and right claw portions for the first claw portion and the second claw portion, the first claw portion 16, the second claw portion 26, and the claw support shaft 6 are simply used. It is described generically.

  The pair of first claw portions 16 are respectively urged toward the first ring gear 11 by the spring member 18, and the first handle is supported by the cam spindle 7 between the pair of first claw portions 16R and 16L. 10 is interposed, and a switching lever 8 that rotates about the cam support shaft 7 integrally with the cam body 17 is attached to the cam body 17 (FIG. 4 ( a)). When the switching lever 8 is operated to rotate the cam body 17 around the cam spindle 7, one of the first claw portions 16 is pressed by the cam body 17 against the bias of the spring member 18, The ring gear 11 is separated from the outer teeth. For example, as shown by a solid line in FIG. 4A, the switching lever 8 is rotated clockwise in plan view from the state where the first claw portion 16R is engaged with the external teeth and the first claw portion 16L is separated from the external teeth. When the first claw portion 16R is pressed by the cam body 17 to be separated from the external teeth and urged by the spring member 18, as indicated by a two-dot chain line, as shown in FIG. The first claw portion 16L meshes with the external teeth. Thus, the rotation direction of the first ring gear 11 regulated by the first claw portion 16 can be switched by operating the switching lever 8.

  As shown in FIGS. 4B and 4C, the pair of second claw portions 26 </ b> R and 26 </ b> L are connected by the connection bar 27 on the side closer to the second ring gear 21 than the claw support shafts 6 </ b> R and 6 </ b> L. . FIG. 4C is an end view taken along line BB in FIG.

  Further, as shown in FIG. 5 (a), the first claw portion 16L and the second claw portion 26L, which are vertically overlapped, swing outside the first claw portion 16R and the second claw portion 26R, respectively. Substantially plate-like oscillating bodies 32R and 32L that perform a seesaw motion are provided around the shafts 31R and 31L. Here, the “outer side” refers to a side opposite to the side facing the first ring gear 11 and the second ring gear 21 in the first claw portion 16 and the second claw portion 26, respectively. In the following, when there is no need to distinguish between the left and right oscillating bodies, the oscillating body 32 and the oscillating shaft 31 will be collectively referred to.

  As shown in FIG. 5 (b), the swing shaft 31 extends to a height substantially equal to the height of the boundary between the overlapping first claw portion 16 and second claw portion 26, and is supported by the support 39. The inner surface of the annular casing 19 of the first handle 10 is supported. In addition, hemispherical protrusions 36 are provided on the outer surfaces of the first claw part 16 and the second claw part 26, respectively, and the first claw part 16 and the second claw part 26 are interposed via the protrusions 36. Thus, the structure can be brought into contact with the rocking body 32.

  Here, from the position where the switching lever 8 is rotated counterclockwise in plan view (solid line in FIG. 4A), the position where the switch lever 8 is rotated clockwise in plan view (2 in FIG. 4A). The operation of the oscillating body 32 when displacing to the dotted line) will be described with reference to FIG. 6 which is an end view taken along the line CC in FIG. First, when the cam body 17 is rotated clockwise around the cam spindle 7 by the operation of the switching lever 8, the first claw portion 16R is pressed by the cam body 17 against urging by the spring member, As shown in FIG. 6 (a), it moves away from the first ring gear 1 (shown in the direction of arrow M) and presses the rocking body 32R. At this time, the first claw portion 16 </ b> R contacts the swinging body 32 </ b> R via the hemispherical protrusion 36, so that the swinging body 32 </ b> R is pressed at a position away from the swinging shaft 31. On the other hand, although not shown, the first claw portion 16L is not acted by the cam body 17 and is therefore pressed toward the first ring gear 11 by the biasing force of the spring member 18.

  Then, as shown in FIG. 6B, the rocking body 32R is pressed by the first claw portion 16R to perform a seesaw motion around the rocking shaft 31, and pushes the protrusion 36 of the second claw portion 26R. Thereby, the 2nd claw part 26R moves to the 2nd ring gear side (illustration, arrow N direction). At this time, the rotational movement in the counterclockwise direction in plan view around the claw support shaft 6R of the second claw portion 26R is transmitted to the second claw portion 26L by the connecting bar 27, and the second claw portion 26L is It rotates counterclockwise around the axis 6L (see FIG. 4B). Accordingly, the second claw portion 26L is separated from the second ring gear 21, and in this state, while the cam body 17 presses the first claw portion 16R, the force is applied to the rocking body 32R and the second claw portion 26R. And, it is held by being transmitted to the second claw portion 26L via the connecting bar 27.

  Although not shown, conversely, when the cam body 17 is rotated counterclockwise by the operation of the switching lever 8, the first claw portion 16L is pressed by the cam body 17 against the biasing by the spring member 18, The oscillating body 32L is pressed away from the first ring gear 11. On the other hand, the first claw portion 16R is not acted on by the cam body 17 and is pressed toward the first ring gear 11 by the urging force of the spring member 18. Then, the rocking body 32L pressed by the first claw portion 16L performs a seesaw motion around the rocking shaft 31L and pushes the second claw portion 26L, whereby the second claw portion 26L faces the second ring gear 21. This movement is transmitted to the second claw portion 26R via the connecting bar 27, and the second claw portion 26R is separated from the second ring gear 21. Then, the force that the cam body 17 presses the first claw portion 16L is transmitted to the second claw portion 26R via the swinging body 32L, the second claw portion 26L, and the connecting bar 27, and this state is maintained. .

  As described above, by operating the single switching lever 8 once, the rotation direction of the first ring gear 11 restricted by the first claw portion 16 and the opposite direction by the second claw portion 26 are restricted. The rotation direction of the second ring gear 21 can be switched simultaneously. In the present embodiment, the pair of first claw portions 16 is illustrated as being biased toward the first ring gear 11 by the spring members 18, but in addition to this, a pair of second claw portions 16 is urged. If the claw portion 26 is also urged toward the second ring gear 21 by the spring member, the second claw portion 26 becomes stronger toward the second ring gear 21 when pressed by the rocking body 32. Pressed.

  Next, the usage method and operation | movement of the wrench 1 of this embodiment are demonstrated using FIG. 7 thru | or FIG. Here, the case where the fastening member is rotated clockwise by the rotation of the rotating body 2 in which the sun gear 3 is integrated in a clockwise direction in plan view and fastened is illustrated.

  First, as shown in FIG. 2, the first claw portion 16R meshes with the external teeth of the first ring gear 11 and the second claw portion 26L meshes with the external teeth of the second ring gear 21 by the operation of the switching lever 8. Leave it in a state. In this state, the second handle 20 is fixed by one hand of the worker or appropriate fixing means. Thereby, the rotation shafts of the first planetary gear 12 and the second planetary gears 22 and 23 are fixed and the revolution is restricted, and each planetary gear can only rotate.

  In this state, when the first handle 10 is rotated counterclockwise in plan view, the first claw portions 16R and 16L and the second claw portions 26R and 26L are also rotated together with the first handle 10. At this time, since the first claw portion 16R meshes with the external teeth on the first ring gear 11 side, the first ring gear 11 rotates counterclockwise as the first handle 10 rotates (FIG. 7A). ) Arrow A1 direction). Accordingly, the first planetary gear 12 that meshes with the internal teeth of the first ring gear 11 also rotates counterclockwise (in the direction of the arrow A2 in the figure), and the sun gear 3 that meshes with the first planetary gear 12 further rotates the clock. Rotate around (in the direction of arrow A3 in the figure). As a result, the fastening member can be rotated clockwise via the rotating body 2.

  At this time, on the second ring gear 21 side, the second claw portion 26L that is pressed toward the external teeth is on the external teeth of the second ring gear 21 as the first handle 10 rotates counterclockwise. Therefore, the second ring gear 21 is not rotated by the rotation of the first handle 10. On the other hand, since the sun gear 3 rotates clockwise by the above-described operation, the inner pinion 23 meshed with the sun gear 3 rotates counterclockwise (arrow A4 direction in FIG. 7B) and meshes with this. The outer pinion 22 rotates clockwise (shown in the direction of arrow A5). Further, the second ring gear 21 meshing with the outer pinion 22 rotates clockwise while sliding the second claw portion 26L (in the direction of arrow A6 in the drawing).

  On the contrary, when the first handle 10 is rotated clockwise in plan view, the first claw portion 16R biased toward the external teeth on the first ring gear 11 side slides on the external teeth. The first ring gear 11 does not rotate by the rotation of one handle 10. On the other hand, on the second ring gear 21 side, since the second claw portion 26L meshes with the external teeth, the second ring gear 21 rotates clockwise as the first handle 10 rotates (in FIG. 7D). Arrow B1 direction). As a result, the outer pinion 22 meshed with the inner teeth of the second ring gear 21 rotates clockwise (shown in the direction of arrow B2), and the inner pinion 23 meshed with this rotates counterclockwise (shown, Arrow B3 direction). As a result, the sun gear 3 rotates clockwise (shown in the direction of arrow B4).

  At that time, on the first ring gear 11 side, the first planetary gear 12 rotates counterclockwise with the rotation of the sun gear 3 (in the direction of arrow B5 in FIG. 7C), and the first ring gear 11 is It rotates counterclockwise while sliding the one claw portion 16R (shown in the direction of arrow B6).

  As described above, when the first handle 10 is reciprocated and rotated while the second handle 20 is fixed, the sun gear 3 can be rotated clockwise both in the forward path and in the backward path. The member can be fastened by turning clockwise.

  Further, since the planet carrier 5 is fixed, the first ring gear 11 or the second ring gear 21 acts as an input gear, and the sun gear 3 acts as an output gear, the rotation of the fastening member is increased with a speed increasing ratio c / The speed can be increased by a (a: number of teeth of sun gear, c: number of teeth of ring gear). For example, in the case of a: c = 1: 2, the speed is doubled by clockwise rotation of the first handle 10 and doubled by counterclockwise rotation. With 10 reciprocating movements, the rotation of the fastening member can be increased fourfold.

  In addition, the switching lever 8 is operated to rotate the cam body 17 so that the first claw portion 16R is separated from the external teeth of the first ring gear 11, and the first claw portion 16L is pressed by the external teeth. The second claw portion 26R is displaced by the seesaw motion of the oscillating body 32 so as to be pressed against the external teeth of the second ring gear 21, and the second claw is transmitted via the transmission by the connecting bar 27. The portion 26L is separated from the external teeth. In this state, if the second handle 20 is fixed and the first handle 10 is reciprocated, the sun gear 3 is moved back and forth in the reciprocal movement of the first handle 10 in both the forward and backward directions. It can be rotated clockwise, and the fastening member can be rotated counterclockwise and loosened.

  The wrench 1 of this embodiment can also be used by rotating the second handle 20 with the first handle 10 fixed. Next, the operation in this case will be described with reference to FIG. First, when the second handle 20 is rotated counterclockwise, the planet carrier 5 rotates counterclockwise integrally therewith, so that the first planetary gear 12 and the second planetary gears 22 and 23 are counterclockwise. Revolve clockwise (in the direction of arrow C1 in FIGS. 8A and 8B).

  At this time, the first ring gear 11 can be rotated counterclockwise while sliding the first claw portion 16R (in the direction of the arrow C2 in FIG. 8A). Rotate clockwise (shown in the direction of arrow C3). Along with this, a force to rotate the sun gear 3 clockwise acts, but due to the resistance of the fastening member, the sun gear 3 hardly rotates, and only the first ring gear 11 is Rotates counterclockwise.

  On the other hand, since the second ring gear 21 is locked to rotate counterclockwise by the second claw portion 26L, the outer pinion 22 rotates clockwise with the revolution (in the direction of arrow C4 in FIG. 8B). The inner pinion 23 rotates counterclockwise (shown in the direction of arrow C5). Along with this, a force to rotate the sun gear 3 clockwise acts, but the sun gear 3 hardly rotates due to the resistance against the rotation of the fastening member, and the outer pinion 22 rotates. Then, the second ring gear 21 rotates clockwise while sliding the second claw portion 26L (in the direction of the arrow C6 in the drawing).

  Conversely, when the second handle 20 is rotated clockwise, the planetary carrier 5 is rotated clockwise, so that the first planetary gear 12 and the second planetary gears 22, 23 revolve clockwise (see FIG. 8 (c), (d) arrow D1 direction). At this time, since the first ring gear 11 is locked in the clockwise rotation by the first claw portion 16R, the first planetary gear 12 rotates counterclockwise with the revolution (the arrow in FIG. 8C). Accordingly, the sun gear 3 rotates clockwise (in the direction of arrow D3 in the drawing).

  At this time, since the first ring gear 11 is fixed, the planet carrier 5 acts as an input, and the sun gear 3 acts as an output gear, the sun gear 3 rotates and is fastened at a speed increasing ratio of (a + c) / c. The rotation of the member is increased. For example, in the case of the gear ratio illustrated above, the rotation of the sun gear 3 and the rotation of the fastening member can be increased three times by the clockwise rotation of the second handle 20.

  On the other hand, on the second ring gear 21 side, the inner pinion 23 rotates counterclockwise as the sun gear 3 rotates (in the direction of arrow D4 in FIG. 8 (d)), and the outer pinion 22 rotates clockwise accordingly. The second ring gear 21 rotates clockwise while sliding the second claw portion 26L (shown in the direction of arrow D6).

  As described above, when the second handle 20 is rotated with the first handle 10 fixed, the sun gear 3 cannot be rotated by the rotational movement in both directions, but the second handle 20 is fixed. The rotation of the fastening member can be increased with a larger speed increase ratio than the forward path or the backward path when the first handle 10 is rotated in the state.

  Furthermore, the wrench 1 of the present embodiment operates in the same manner as the normal wrench 1 by holding the first handle 10 and the second handle 20 together and rotating them together. Next, this operation will be described with reference to FIG. When both the handles 10 and 20 are rotated counterclockwise, the first ring gear 11 is rotated counterclockwise by the first handle 10 on the first ring gear 11 side (in FIG. 9A). The first planetary gear 12 is revolved counterclockwise by the second handle 20 (in the direction of arrow E1) (shown in the direction of arrow E2). As a result, the first planetary gear 12 revolves counterclockwise while revolving (in the direction of the arrow E3 in the figure), but the sun gear 3 hardly rotates because of resistance to the rotation of the fastening member.

  On the other hand, since the second ring gear 21 is locked in the counterclockwise rotation by the second claw portion 26L, the outer pinion 22 rotates in the counterclockwise direction (in the direction of arrow E2 in FIG. 9B). The inner pinion 23 rotates counterclockwise (shown in the direction of arrow E5). Along with this, a force to rotate the sun gear 3 clockwise acts, but the sun gear 3 hardly rotates and the outer pinion 22 rotates due to the resistance against the rotation of the fastening member. Accordingly, the second ring gear 21 rotates clockwise while sliding the second claw 26L (in the direction of arrow E6 in the drawing).

  Conversely, when both the handles 10 and 20 are rotated clockwise, the first ring gear 11 does not rotate because the clockwise rotation is locked by the first claw portion 16R, but the second claw portion 26L Since it meshes with the external teeth of the second ring gear 21, the second ring gear 21 rotates clockwise (in the direction of arrow F1 in FIG. 9D). At the same time, as the planet carrier 5 rotates integrally with the second handle 20, the first planetary gear 12 and the second planetary gears 22, 23 revolve clockwise (arrows in FIGS. 9C and 9D). F2 direction). Accordingly, the sun gear 3 meshed with the inner pinion 23 and the first planetary gear 12 rotates clockwise (in the direction of the arrow F3 in the drawing). At this time, the rotation angle of the first handle 10 and the second handle 20 and the rotation angle of the sun gear 3 are the same.

  As described above, according to the wrench 1 of the present embodiment, the fastening member is provided in both the forward path and the backward path by reciprocating the first handle 10 while the second handle 20 is fixed. Can be rotated in the same direction, and the rotation can be accelerated.

  When the second handle 20 is rotated while the first handle 10 is fixed, the rotation direction of the fastening member is limited to one direction, but the rotation direction of the second handle 20 is limited to one direction. The speed can be further increased.

  Further, when the first handle 10 and the second handle 20 are held together and rotated together, the first handle 10 and the second handle 20 are expanded to operate in the same manner as a normal wrench. Even when there is not enough space for use in this case, or when both hands cannot be used, it is possible to cope with only the wrench 1 of the present embodiment without requiring a separate tool.

  Moreover, in the wrench 1 of this embodiment, since the 1st nail | claw part 16 and the 2nd nail | claw part 26 are comprised by a pair of nail | claw part which each regulates the rotation to the opposite direction, the claw part which regulates rotation By switching from one of the pair to the other, the work of fastening the fastening member and the work of loosening can be performed without changing the wrench 1 and turning it over.

  In addition, since the rocking body 32 and the connecting bar 27 can be switched in the second claw portion 26 in conjunction with the switching in the first claw portion 16, the single switching lever 8 can be operated only once. The directions in which the rotations of the first ring gear 11 and the second ring gear 21 are restricted can be switched simultaneously.

  The present invention has been described with reference to the preferred embodiments. However, the present invention is not limited to the above-described embodiments, and various improvements can be made without departing from the scope of the present invention as described below. And design changes are possible.

  For example, the case where the rotating body 2 is provided with one type of mounting portion 2b on which a socket can be mounted is illustrated, but the present invention is not limited to this, and the mounting portions conforming to sockets of different standards are provided at both ends of the rotating body 2. Can be provided. Further, instead of providing the mounting portion, a socket portion that can be fitted to the head of a general fastening member can be directly provided on the rotating body 2.

  Moreover, although the case where the cam body 17 for switching the rotation directions of the first ring gear 11 and the second ring gear 21 is interposed between the pair of first claw portions 16 is illustrated, it is not limited thereto. A cam body can be provided only on the second claw portion 26 side. Even in this case, by providing the swinging body 32 outside the first claw portion 16 and the second claw portion 26 that are vertically superimposed, the first claw portion 16 is interlocked with the switching to the second claw portion 26. Can be switched.

  Furthermore, although the case where the direction in which rotation of the 1st ring gear 11 and the 2nd ring gear 21 is controlled is switched simultaneously by operation of the single switching lever 8 was illustrated, it is not limited to this. For example, a configuration in which a pair of first claw portions and a pair of second claw portions are provided at positions where they do not overlap vertically, a cam body is interposed in each, and a cam body is rotated by a separate switching lever. It can also be.

  In addition, the case where the first handle 10 is disposed on the first ring gear 11 side and the second handle 20 is disposed on the second ring gear 21 side is illustrated, but the present invention is not limited to this, and the reverse positional relationship exists. Also good. In addition, the configuration in which the second handle 20 and the planetary carrier 5 are integrated with the second ring gear 21 sandwiched is exemplified, but the present invention is not limited to this. If the gear and the sun gear are supported rotatably, the handle can be extended from the planet carrier itself to form the second handle.

It is a disassembled perspective view of the wrench of this embodiment. It is a top view of the principal part of the wrench of FIG. FIG. 2 is an end view taken along line AA in FIG. 1. It is explanatory drawing explaining the structure which switches the direction which controls rotation of a 1st ring gear and a 2nd ring gear in the wrench of FIG. It is explanatory drawing explaining the structure which switches the direction which controls rotation of a 1st ring gear and a 2nd ring gear in the wrench of FIG. It is explanatory drawing explaining operation | movement of the rocking | fluctuation body of the wrench of FIG. It is explanatory drawing explaining the usage method and operation | movement of the wrench of FIG. It is explanatory drawing explaining the usage method and operation | movement of the wrench of FIG. It is explanatory drawing explaining the usage method and operation | movement of the wrench of FIG.

Explanation of symbols

1 Wrench 2 Rotating body 2b Mounting part (Rotating body)
3 Sun gear 5 Planetary carrier 6, 6R, 6L Claw support shaft 7 Cam body support shaft 8 Switching lever 10 First handle 11 First ring gear 12 First planetary gear 12a Rotating shafts 16, 16R, 16L of the first planetary gear One claw portion 17 Cam body 18 Spring member 20 Second handle 21 Second ring gear 22 Outer pinion (second planetary gear)
23 Inner pinion (second planetary gear)
22a, 23a Rotating shaft 26, 26R, 26L of second planetary gear Second claw portion 27 Connecting bar 31, 31R, 31L Oscillating shaft 32, 32R, 32L Oscillating body

Claims (3)

A rotating body that transmits torque to the fastening member;
A single sun gear that rotates integrally with the rotating body;
A single pinion type first planetary gear meshing with the sun gear and capable of revolving and rotating around the sun gear;
A first ring gear having inner teeth that mesh with the first planetary gear;
A double pinion type second pinion comprising an inner pinion meshing with the sun gear and capable of revolution and rotation around the sun gear, and an outer pinion meshing with the inner pinion and capable of revolution and rotation around the sun gear. Planetary gears,
A second ring gear around which inner teeth meshing with the outer pinion are provided;
A first claw portion that regulates the rotation direction of the first ring gear in one direction;
A second claw portion that regulates the rotation direction of the second ring gear in a direction opposite to the rotation direction of the first ring gear;
The first claw portion and the second claw portion are fixed, and a first handle that is rotatable around the axis of the first ring gear and the second ring gear;
A planet carrier integrated with the rotation axis of the first planetary gear and the rotation axis of the second planetary gear;
A wrench comprising a planetary carrier and a second handle that can rotate integrally with the first ring gear and the second ring gear. The first claw portion is constituted by a pair of claw portions that regulate the rotation directions of the first ring gear in opposite directions, and the second claw portions oppose the rotation directions of the second ring gear, respectively. It is composed of a pair of claws that regulate in the direction,
A spring member that urges at least one of the pair of first claw portions and the pair of second claw portions toward the external teeth of the first ring gear and the external teeth of the second ring gear, respectively;
The pair of first claw portions and / or the pair of second claw portions biased by the spring member are interposed between the first handle and the first handle so as to be rotatable. And a cam body that presses one of the pair of first claw portions and / or one of the pair of second claw portions against the bias of the spring member. Wrench described in. The cam body is interposed in any one of the pair of first claw portions and the pair of second claw portions, and the other pair is connected by a connecting bar,
One of the first claw portions and one of the pair of second claw portions, and the other of the pair of first claw portions and the other of the pair of second claw portions are rotatable in a state of being overlapped with each other. A claw support shaft supported by the first handle;
And a rocking body for transmitting, by a seesaw motion, a force pressed against the cam body from one of the superimposed first claw and second claw to the other. The wrench according to claim 2.

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