JP2014163513A - Engagement type clutch apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an engagement type clutch apparatus capable of reducing impact applied to each of teeth for making a first member and a second member a synchronous state by engagement.SOLUTION: The engagement type clutch apparatus includes a first member 26 having a plurality of dog teeth 26a and a second member 23 having a plurality of clutch teeth 23b on which respective dog teeth 26a are abutted and a plurality of clutch engagement grooves 23c formed correspondingly to the clutch teeth 23b so as to be engaged with respective dog teeth 26a, wherein a plurality of guide grooves 23d for guiding respective dog teeth 26a to respective clutch teeth 23b when the first member 26 and the second member 23 are coaxially rotated and thrust is applied to either one of the first member 26 and the second member 23 are formed on the second member 23. Since all the dog teeth 26a are guided to the respective clutch teeth 23b through the respective guide grooves 23d and abutted on the respective clutch teeth 23b so that the first member 26 and the second member 23 are made a synchronous state, impact applied to each dog tooth 26a can be reduced.

Description

  The present invention relates to a meshing clutch device used in a transmission of a vehicle or the like.

  Such a meshing clutch device can be connected by, for example, a dog tooth of a sleeve, for example, a first member meshed with a clutch hub fixed to a rotating shaft in an axial direction, to a clutch hub during a shift operation. For example, the second member arranged to rotate relative to the clutch ring is engaged with a clutch groove formed between the clutch teeth of the dog clutch portion of the clutch ring and the clutch teeth, and the dog teeth of the sleeve are engaged with the clutch. The shift operation is completed by meshing with the clutch teeth of the ring. Therefore, the engagement of the meshing clutch device must be in a state where the rotational speed and phase of the first member and the second member are equal, that is, in a synchronized state, and the synchronization is performed by providing a friction ring such as a synchronizer. It was. However, maintenance is necessary because wear occurs when the friction ring or friction force synchronizes.

  On the other hand, in order to bring the sleeve and the clutch ring into a synchronized state without using the friction ring, for example, in the technique disclosed in Patent Literature 1, the dog teeth of the first member are inserted into the dog teeth every predetermined number. A first fitting guide tooth that protrudes in the axial direction to the side and is longer than the other dog teeth is provided, and on the other hand, the second member also protrudes in the axial direction to the insertion side surface every predetermined number and is longer than the other clutch teeth. When the second fitting guide teeth are provided and thrust is applied to one of the first member and the second member to move in the axial direction, the first fitting guide teeth and the second fitting guide teeth come into contact with each other and engage. Therefore, the first member and the second member can be synchronized. Therefore, in this synchronized state, the dog teeth of the first member can be fitted into the clutch grooves between the clutch teeth of the second member to fit the first member and the second member.

JP 2009-108878 A

  However, in the technique disclosed in Patent Document 1, since the first member and the second member are in a synchronized state, the first fitting guide teeth are provided only on a part of the dog teeth because of the configuration. The number thereof is smaller than that of the dog teeth, and the second fitting guide teeth are provided only on a part of the clutch teeth, and therefore the number thereof is smaller than that of the clutch teeth. Therefore, when the first fitting guide teeth and the second fitting guide teeth engage and synchronize with each other, the impact received by one tooth of both the fitting guide teeth increases, resulting in impact sound and vibration. Will occur.

  The present invention has been made in view of the above problems, and provides a meshing clutch device that can reduce the impact received per tooth of a tooth that brings the first member and the second member into a synchronized state by engagement. With the goal.

  In order to solve the above-mentioned problem, the meshing clutch device according to claim 1 corresponds to a first member having a plurality of dog teeth, a plurality of clutch teeth with which each dog tooth can abut, and each clutch tooth. A second member having a plurality of clutch fitting grooves into which the respective dog teeth are fitted, and the first member and the second member rotate on the same axis, and the first member and the first member The gist is that the second member is provided with a plurality of guide grooves for guiding the dog teeth to the clutch teeth in a state where thrust is applied to one of the two members.

  In order to solve the above-mentioned problem, the meshing clutch device according to claim 2 is characterized in that, in claim 1, a third member is arranged on the opposite side of the first member in the axial direction from the second member, The third member is provided with a plurality of second clutch teeth that can be brought into contact with the respective dog teeth, and a plurality of second clutch fittings that are provided corresponding to the respective second clutch teeth and that engage with the respective dog teeth. A plurality of guide teeth that guide the dog teeth to the second clutch teeth in a direction opposite to the guide grooves in a state where thrust is applied to one of the first member and the third member. The gist is that the second guide groove is formed.

  In order to solve the above-described problem, the meshing clutch device according to claim 3 is characterized in that, in claim 1, each of the dog teeth is inserted into the guide groove in a state in which thrust is applied to one of the first member and the second member. The gist is that a plurality of third guide grooves for guiding in the opposite direction are formed in the second member.

  In order to solve the above problem, the meshing clutch device according to claim 4 is the meshing clutch device according to any one of claims 1 to 3, wherein the dog tooth includes a base end portion protruding from the first member, and the base end portion. The gist of the present invention is that it has a distal end portion that is formed continuously with the portion and has an arcuate cross section facing each of the guide grooves and the clutch engagement grooves.

  In order to solve the above-described problem, the meshing clutch device according to claim 5 is the meshing clutch device according to claim 4, wherein the distal end portion projects in the circumferential direction so as to transmit torque from the proximal end portion, and the distal end portion is inserted into each clutch fitting groove. The gist is that a locking portion capable of locking the portion is formed.

  In order to solve the above problem, the meshing clutch device according to claim 6 is the mesh clutch device according to claim 4, wherein each of the guide grooves is formed deeper than the radius of the arcuate section of the tip. Is the gist.

  In order to solve the above-described problem, the meshing clutch device according to claim 7 is characterized in that, in any one of claims 4 to 6, each clutch engagement groove is formed deeper than each guide groove. To do.

  In order to solve the above-described problem, the meshing clutch device according to claim 8 is the meshing clutch device according to any one of claims 1 to 7, wherein the second member is provided on one of the input side shaft and the output side shaft of the automatic transmission. A clutch ring rotatably supported and rotationally coupled to the other one of the input side shaft and the output side shaft, wherein the first member is adjacent to the second member on one of the input side shaft and the output side shaft. The gist of the present invention is that the sleeve is engaged with the clutch hub fixed in such a manner as to be movable in the axial direction.

  According to the invention of the meshing clutch device according to claim 1, all the dog teeth are guided to the respective clutch teeth through the respective guide grooves, and the first member and the second member are brought into contact with the respective clutch teeth. Is made in a synchronized state, so that the impact per dog tooth can be reduced.

  According to the invention of the meshing clutch device according to claim 2, the third member is disposed on the opposite side of the first member in the axial direction with respect to the second member, and each dog tooth is applied to the third member. A plurality of second clutch teeth contacting each other, a plurality of second clutch engaging grooves in which each dog tooth is fitted, and all the dog teeth in a state where thrust is applied to one of the first member and the third member. Due to the configuration in which a plurality of second guide grooves that guide the two clutch teeth in the direction opposite to the guide grooves are formed, all the dog teeth are guided to the respective second clutch teeth via the respective second guide grooves. Since the first member and the third member are brought into a synchronized state by contact with each second clutch tooth, the impact received by each dog tooth can be reduced.

  According to the invention of the meshing clutch device according to claim 3, each dog tooth is connected to the guide groove in the state in which thrust is applied to one of the first member and the second member to the second member. Has a configuration in which a plurality of third guide grooves for guiding in the opposite direction are formed. Therefore, even when the relative rotational speed difference between the first member and the second member is reversed, all the dog teeth are connected to each third tooth. Since the first member and the second member are synchronized with each other by being guided to each clutch tooth via the guide groove, the impact received by each dog tooth can be reduced.

  According to the invention of the meshing clutch device according to claim 4, since the distal end portions of the dog teeth that are in contact with the guide grooves and the clutch fitting grooves are arc-shaped in cross section, the wear resistance of the dog teeth can be improved. .

  According to the invention of the meshing clutch device according to claim 5, the dog teeth are locked at the locking portions formed at the respective clutch fitting grooves, so that the dog teeth are inconvenient from the respective clutch fitting grooves. Can be prevented.

  According to the invention of the meshing clutch device according to claim 6, since each guide groove is formed deeper than the radius of the cross-section arc shape of the tip of the dog tooth, the dog tooth entering each guide groove is each guide. Jumping out of the groove is prevented, and it can be surely guided to each clutch tooth and each clutch fitting groove.

  According to the invention of the meshing clutch device according to claim 7, each clutch fitting groove is formed deeper than each guide groove, that is, deeper than the radius of the arcuate section of the tip of the dog tooth. In addition to the arcuate portion of the cross-section that is the distal end portion of the dog teeth, the base end portion can also contact each clutch meshing groove to transmit torque, thereby improving the strength of the dog teeth.

  According to the invention of the meshing clutch device according to claim 8, the second member is rotatably supported on one of the input side shaft and the output side shaft of the automatic transmission and the other of the input side shaft and the output side shaft. The first member is meshed with a clutch hub fixed to one of the input side shaft and the output side shaft adjacent to the second member so as to be movable in the axial direction. The sleeve can be applied to a clutch device of an automatic transmission.

It is the schematic which shows the structure of the vehicle which can apply this invention. It is explanatory drawing which shows the automatic transmission which can apply this invention. It is explanatory drawing which shows 1st Embodiment of this invention. It is the elements on larger scale of 1st Embodiment shown in FIG. It is a partial front view which shows the principal part of the 1st member shown in FIG. It is a partial front view which shows the principal part of the 2nd member shown in FIG. It is the elements on larger scale which show 2nd Embodiment of this invention. It is the elements on larger scale which show 3rd Embodiment of this invention.

  Hereinafter, a first embodiment in which an automatic transmission having a meshing clutch device according to the present invention is applied to a vehicle will be described with reference to the drawings. FIG. 1 is a schematic diagram showing the configuration of the vehicle. As shown in FIG. 1, the vehicle M is configured to include an engine 11, a clutch 12, an automatic transmission 13, a differential device 14, and driving wheels (left and right front wheels) Wfl and Wfr. The engine 11 generates driving force by burning fuel. The driving force of the engine 11 is configured to be transmitted to the drive wheels Wfl and Wfr via the clutch 12, the automatic transmission 13, and the differential device 14 (a so-called front wheel drive vehicle).

  The clutch 12 is configured to be automatically connected and disconnected in response to a command from a control device (not shown). The automatic transmission 13 incorporates a meshing clutch device 20 and automatically selects, for example, five forward speeds and one reverse speed. The differential device 14 includes both a final gear and a differential gear, and is formed integrally with the automatic transmission 13.

  As shown in FIG. 2, the automatic transmission 13 includes a casing 21, an input side shaft 22, an axial movement device 27, an output side shaft 28, and a first clutch ring 23 and a second clutch ring 24 that constitute a meshing clutch device 20. The clutch hub 25 and the sleeve 26 are included.

  The casing 21 includes a main body 21a formed in a substantially bottomed cylindrical shape, a first wall 21b that is a bottom wall of the main body 21a, and a second wall 21c that divides the main body 21a in the left-right direction.

  The input side shaft 22 is rotatably supported by the casing 21. That is, one end (left end) of the input side shaft 22 is supported by the first wall 21b via the bearing 21b1, and the other end (right end) side of the input side shaft 22 is supported by the second wall 21c via the bearing 21c1. . The other end of the input side shaft 22 is rotationally connected to the output shaft of the engine 11 via the clutch 12. Therefore, the output of the engine 11 is input to the input side shaft 22 when the clutch 12 is connected.

  A first clutch ring 23 and a second clutch ring 24 are rotatably supported on the input side shaft 22. Further, a clutch hub 25 is fixed to the input side shaft 22 between the first clutch ring 23 and the second clutch ring 24 by spline fitting or the like.

  As shown in FIGS. 2, 3, and 4, the sleeve 26 rotates integrally with the clutch hub 25 and is slidable in the axial direction with respect to the clutch hub 25, and is formed in a ring shape. On the inner peripheral surface of the sleeve 26, a plurality of dog teeth 26a (for example, 16 pieces) are formed at a predetermined pitch interval to be fitted to a spline formed on the outer peripheral surface of the clutch hub 25 so as to be movable in the axial direction. The sleeve 26 is the first member of the present invention.

  As shown in FIGS. 3, 4 and 5, each dog tooth 26a has a base end portion 26a1 projecting radially from the sleeve 26, and axially opposite sides formed continuously in plane symmetry with the base end portion 26a1. The distal end portions 26a2 and 26a3 project from the proximal end portion 26a1 in the circumferential direction so as to be able to transmit torque, and are formed in an arc shape in cross section.

  Further, as shown in FIG. 2, an outer peripheral groove 26d is formed on the outer peripheral surface of the sleeve 26 along the circumferential direction. The tip of the fork 27a of the axial movement device 27 is slidably engaged with the outer circumferential groove 26d along the circumferential direction.

  As shown in FIGS. 3 and 4, a first dog clutch portion 23 a that engages with dog teeth 26 a formed on the sleeve 26 is formed on the side surface of the first clutch ring 23 on the sleeve 26 side. A second dog clutch portion 24 a that engages with the dog teeth 26 a of the sleeve 26 is formed on the side surface of the second clutch ring 24 on the clutch hub 25 side.

  As shown in FIGS. 3, 4 and 6, the first dog clutch portion 23 a of the first clutch ring 23 has a plurality of (for example, 16) clutch teeth 23 b with which the dog teeth 26 a can abut, and each clutch tooth. A plurality of (for example, 16) clutch engaging grooves 23c provided corresponding to the respective dog teeth 26a, and a plurality of (for example, 16) guides for guiding each of the dog teeth 26a to the respective clutch teeth 23b. A groove 23d is formed. The distal end portion 26a2 of each dog tooth 26a is opposed to each guide groove 23d and each clutch fitting groove 23c. The first clutch ring 23 is the second member of the present invention.

  As shown in FIG. 4, the guide groove 23d is formed with a depth d1 deeper than the radius r of the arcuate section 26a2 of the dog tooth 26a so that the dog tooth 26a does not easily come out of the guide groove 23d. Yes. In FIG. 4, o indicates the center of the arcuate cross section with the radius r of the distal end portion 26a2 of the dog tooth 26a. The dog teeth 26a guided in the guide grooves 23d abut against the side surfaces 23b1 of the clutch teeth 23b located on the clutch fitting groove 23c side, and the sleeve 26 is decelerated to reduce the rotational speed difference from the first clutch ring 23. In this configuration, the dog teeth 26a of the sleeve 26 are made smaller to easily jump into the clutch engagement grooves 23c.

  Each of the clutch fitting grooves 23c is engaged with the dog teeth 26a. As shown in FIGS. 4 and 6, the engaging portions 23c1 that can lock the arcuate section of the tip 26a2 of the dog teeth 26a. Have The locking portion 23c1 is configured to have a circular arc shape so as to fit the circular arc shape of the distal end portion 26a2 of the dog tooth 26a, and the cross-sectional arc shape portion of the distal end portion 26a2 of the dog tooth 26a is the locking portion 23c1. The dog teeth 26a are prevented from undesirably coming out of the clutch engagement groove 23c.

  Each clutch fitting groove 23c is formed continuously with each guide groove 23d, and as shown in FIG. 4, the depth d2 is formed deeper than the depth d1 of the guide groove 23d. Therefore, the dog tooth 26a is configured such that not only the distal end portion 26a2 but also the proximal end portion 26a1 fits into the clutch fitting groove 23c, and the proximal end portion 26a1 of the dog tooth 26a is formed on the wall portion 23c2 of the clutch fitting groove 23c. Torque can be transmitted even when the direction of torque transmission changes in the opposite direction due to contact.

  As shown in FIGS. 2, 3, and 4, a second clutch ring 24 is disposed on the opposite side of the sleeve 26 in the axial direction from the first clutch ring 23. The second dog clutch portion 24a of the second clutch ring 24 is provided with a plurality of (for example, 16) second clutch teeth 24b with which the dog teeth 26a can contact and corresponding to each clutch tooth 24b. A plurality of (for example, 16) second clutch fitting grooves 24c into which 26a is fitted, and a plurality of (for example, 16) second guide grooves 24d for guiding each dog tooth 26a to each clutch tooth 24b are provided in the first clutch. The guide groove 23d provided in the ring 23 is formed so as to be guided in the opposite direction. The distal end portion 26a3 of each dog tooth 26a is opposed to each second guide groove 24d and each clutch fitting groove 24c. The second clutch ring 24 is the third member of the present invention.

  The second clutch teeth 24b, the second clutch fitting grooves 24c, and the second guide grooves 24d in the second dog clutch portion 24a of the second clutch ring 24 are respectively connected to the first dog clutch portion 23a of the first clutch ring 23. The clutch teeth 23b, each clutch fitting groove 23c, and the second guide groove 24d have the same configuration except that the second guide groove 24d is formed so as to guide in the opposite direction to the guide groove 23d. Therefore, detailed description thereof is omitted.

  As shown in FIGS. 2 and 3, a gear (helical gear) that meshes with a first output gear 28 a described later is formed on the outer peripheral surface of the first clutch ring 23. A gear (helical gear) that meshes with a second output gear 28b described later is formed on the outer peripheral surface of the second clutch ring 24.

  As shown in FIG. 2, the axial movement device 27 reciprocates the sleeve 26 along the axial direction. When the sleeve 26 is pressed against the first clutch ring 23 or the second clutch ring 24, When a reaction force is applied from the first clutch ring 23 or the second clutch ring 24, the sleeve 26 is configured to be allowed to move by the reaction force.

  The axial movement device 27 includes a fork 27a, a fork shaft 27b, and a drive device (actuator) 27c. The tip of the fork 27 a is formed in accordance with the outer peripheral shape of the outer peripheral groove 26 d of the sleeve 26. The base end portion of the fork 27a is fixed to the fork shaft 27b. The fork shaft 27b is slidably supported on the casing 21 along the axial direction. That is, one end (left end) of the fork shaft 27b is supported on the first wall 21b via the bearing 21b3, and the other end (right end) side of the fork shaft 27b is supported on the second wall 21c via the bearing 21c3. The other end of the fork shaft 27b is disposed through the drive device 27c.

  The drive device 27c is a linear drive device using a linear motor as a drive source, and the linear motor described in Japanese Patent Application Laid-Open No. 2008-259413 may be adopted. That is, in the linear drive device 27c, a plurality of coils are juxtaposed along the axial direction to form a cylindrical core, and a plurality of N-pole magnets and S-pole magnets are provided on the fork shaft 27b passing through the through-holes. Are arranged in parallel. By controlling energization to each coil, the fork shaft 27b can be reciprocated, or can be positioned and fixed at an arbitrary position.

  In this embodiment, a linear drive device is used as the drive device 27c. However, when the sleeve 26 is pressed against the first clutch ring 23 or the second clutch ring 24, the first clutch ring 23 or the second clutch is used. As long as it is configured to allow the sleeve 26 to move by the reaction force when a reaction force is applied from the ring 24, other drive devices such as a solenoid drive device and a hydraulic drive device are provided. But you can.

  The output shaft (counter shaft) 28 is rotatably supported by the casing 21 as shown in FIG. That is, one end (left end) of the output side shaft 28 is supported by the first wall 21b via the bearing 21b2, and the other end (right end) of the output side shaft 28 is supported by the second wall 21c via the bearing 21c2. . A first output gear 28a, a second output gear 28b, and a third output gear 28c are fixed to the output shaft 28 by spline fitting or the like.

  The first output gear 28a meshes with the first clutch ring 23, and a gear (helical gear) meshed with the first clutch ring 23 is formed on the outer peripheral surface. The second output gear 28b meshes with the second clutch ring 24, and a gear (helical gear) meshed with the second clutch ring 24 is formed on the outer peripheral surface. The third output gear 28c meshes with a clutch ring (not shown) of the differential device 14, and a gear (helical gear) meshed with the clutch ring is formed on the outer peripheral surface.

  Therefore, the driving force of the engine 11 is input from the input side shaft 22, transmitted to the output side shaft 28, and finally output to the differential device 14 via the third output gear 28 c. It is also possible to configure the shaft 28 as the input side and the shaft 22 as the output side.

  In the shift operation, the sleeve 26 moves in the axial direction via the fork shaft 27b by the output of the control device (not shown) to the drive device 27c.

  Next, the operation of the sleeve 26, the first clutch ring 23 and the second clutch ring 24 in the meshing clutch device 20 for automatic transmission will be described. Here, for example, when the sleeve 26 rotates at a high speed and a small moment of inertia and the first clutch ring 23 rotates at a low speed and a large moment of inertia, as in the case of a shift up, the sleeve 26 is moved to the first clutch ring 23. The sleeve 26 is decelerated by meshing. On the other hand, when the sleeve 26 is rotated at a low speed and a small moment of inertia and the second clutch ring 24 is rotated at a high speed and a large moment of inertia, as in the downshift, the sleeve 26 is engaged with the second clutch ring 24. The sleeve 26 is increased in speed.

  Control of the shift operation, that is, the operation of the sleeve 26 with respect to the first clutch ring 23 is executed by a computer program of a control device (not shown). If there is no shift command for either upshifting or downshifting, the automatic transmission 13 is not shifted, and the sleeve 26 is separated from the first clutch ring 23 and the second clutch ring 24 as shown in FIG. . When there is a shift-up command, a shift-up operation is started, and the sleeve 26 is moved to the first clutch ring 23 side along the axial direction by the axial movement device 27.

  As the sleeve 26 moves, the distal end portions 26a2 of the dog teeth 26a of the sleeve 26 directly enter the guide grooves 23d without contacting the distal end surface 23b2 of the clutch teeth 23b, and the clutch teeth 23b. In some cases, the guide groove 23d enters the guide groove 23d after contacting the distal end surface 23b2. When the distal end portion 26a2 of the dog tooth 26a of the sleeve 26 comes into contact with the distal end surface 23b2 of the clutch tooth 23b, the sleeve 26 is decelerated by this contact and the rotational speed difference from the first clutch ring 23 is reduced. The tip 26a2 of each dog tooth 26a of the sleeve 26 enters into each guide groove 23d.

  Each distal end portion 26a2 of each dog tooth 26a of the sleeve 26 that has entered into each guide groove 23d has a rotational speed of the sleeve 26 higher than that of the first clutch ring 23, so that each side face 23b1 of each clutch tooth 23b. The dog teeth 26a abut against the side surfaces 23b1 of the clutch teeth 23b. Due to this contact, the sleeve 26 is decelerated to reduce the rotational speed difference from the first clutch ring 23, so that each dog tooth 26a of the sleeve 26 easily jumps into each clutch fitting groove 23c.

  As a result, each dog tooth 26a of the sleeve 26 is engaged with each clutch engagement groove 23c of each clutch tooth 23b of the first clutch ring 23 so that each dog tooth 26a and each clutch tooth 23b are engaged with each other. And the first clutch ring 23 rotate synchronously, and the shift-up operation ends.

  Next, the shift-down operation of the automatic transmission meshing clutch device 20 will be described. When there is a downshift command, a downshift operation is started, and the sleeve 26 is moved to the second clutch ring 24 side along the axial direction by the axial movement device 27.

  As the sleeve 26 moves, the distal end portions 26a3 of the dog teeth 26a of the sleeve 26 directly enter the guide grooves 24d without coming into contact with the distal end surface 24b2 of the second clutch teeth 24b. The two clutch teeth 24b may enter the second guide grooves 24d after contacting the tip surface 24b2. When the distal end portion 26a3 of the dog tooth 26a of the sleeve 26 comes into contact with the distal end surface 24b2 of the second clutch tooth 24b, the sleeve 26 is increased in speed by this contact, and the second clutch ring 24 is in contact with the second clutch ring 24. The rotational speed difference is reduced, and each tip portion 26a3 of each dog tooth 26a of the sleeve 26 enters into each second guide groove 24d.

  Each distal end portion 26a3 of each dog tooth 26a of the sleeve 26 that has entered into each guide groove 24d has a rotational speed of the sleeve 26 lower than that of the second clutch ring 24, whereby each of the second clutch teeth 24b. Guided toward the side surface 24b1, and each dog tooth 26a abuts on each side surface 24b1 of the second clutch tooth 24b. Due to this contact, the sleeve 26 is increased in speed and the rotational speed difference from the second clutch ring 24 is reduced, so that each dog tooth 26a of the sleeve 26 can be easily put into each second clutch engagement groove 24c. Jump into.

  As a result, the dog teeth 26a of the sleeve 26 and the dog teeth 26a and the clutch teeth 24b of the second clutch ring 24 are jumped into the second clutch engagement grooves 24c of the second clutch teeth 24b of the second clutch ring 24. As a result, the sleeve 26 and the second clutch ring 24 rotate synchronously, and the shift-down operation ends.

  A second embodiment in which an automatic transmission having a meshing clutch device 20 according to the present invention is applied to a vehicle will be described with reference to FIG. 7 that are the same as those in FIGS. 1 to 6 are given the same reference numerals as those in FIG. Only the differences from the first embodiment will be described below.

  As shown in FIG. 7, the meshing clutch 20 of the second embodiment has dog teeth 26 a formed from both side surfaces 26 b 1 and 26 b 2 of the sleeve 26 toward the first clutch ring 23 and the second clutch ring 24, respectively. This is different from the meshing clutch device 20 of the first embodiment described above.

  As shown in FIG. 7, each dog tooth 26a has a plurality of (for example, 16) shafts at predetermined pitch intervals from both side surfaces 26b1, 26b2 of the sleeve 26 toward the first clutch ring 23 and the second clutch ring 24, respectively. Each base end portion 26a1 projecting in the direction, and tip portions 26a2, 26a3 on both sides in the axial direction formed in plane symmetry continuously with each base end portion 26a1. The distal end portion 26a2 of each dog tooth 26a is opposed to each guide groove 23d and each clutch fitting groove 23c, and the distal end portion 26a3 of each dog tooth 26a is each second guide groove 24d and each second clutch fitting groove. The configuration facing 24c is the same as that of the meshing clutch device 20 of the first embodiment. Therefore, the shift-up operation and the shift-down operation of the automatic transmission meshing clutch device 20 in the second embodiment are the same as those in the first embodiment, and detailed description thereof is omitted.

  A third embodiment in which an automatic transmission having a meshing clutch device 20 according to the present invention is applied to a vehicle will be described with reference to FIG. In FIG. 8, the same components as those in FIGS. 1 to 6 are denoted by the same reference numerals as those in FIG. Only the differences from the first embodiment will be described below.

  As shown in FIG. 8, the meshing clutch device 20 of the third embodiment is configured such that the first clutch ring 23 has dog teeth 26 a as guide grooves in addition to a plurality of guide grooves 23 d between the clutch teeth 23 b. The third clutch engagement is formed continuously with the plurality of third guide grooves 23e and the third guide grooves 23e for guiding the contact with the clutch teeth 23b in the opposite direction to 23d, and each dog tooth 26a is fitted. Similarly, the second clutch ring 24 has a plurality of second guide grooves 24d between the second clutch teeth 24b, and dog teeth 26a in a direction opposite to the guide grooves 24d. A plurality of fourth guide grooves 24e and a fourth guide groove 24e that are guided toward contact with the two clutch teeth 24b are formed continuously, and a fourth clutch engagement groove 24f into which each dog tooth 26a is fitted is formed. The point of the first embodiment described above The only fit clutch device 20 is different.

  Therefore, in the meshing clutch device 20 of the third embodiment, each dog tooth 26a is provided in the first clutch ring 23 in the direction opposite to the guide groove 23e, compared to the meshing clutch device 20 of the first embodiment. A plurality of third guide grooves for guiding the clutch teeth 23b are added, and the dog teeth 26a are guided to the second clutch teeth 24b in the second clutch ring 24 in the direction opposite to the second guide grooves 24e. In this configuration, a plurality of fourth guide grooves 24f are added.

  The shift-up operation of the meshing clutch device 20 of the third embodiment shown in FIG. 8 is in addition to the operation similar to the operation based on the guide groove 23e of the meshing clutch device 20 of the first embodiment and the second embodiment. For example, when the rotational speed of the first clutch ring 23 on the wheel side becomes higher than the rotational speed of the sleeve 26 on the engine side during downhill traveling in the neutral state in which the clutch 12 is released, Each tip portion 26a2 of the tooth 26a is guided by each third guide groove 23e, is fitted in each third clutch engagement groove 23f, and the sleeve 26 and the first clutch ring 23 rotate synchronously to perform a shift-up operation. To complete.

  The shift-down operation of the meshing clutch device 20 of the third embodiment shown in FIG. 8 is the same as the operation based on the second guide groove 24d of the meshing clutch device 20 of the first and second embodiments. In addition, when the rotational speed of the first clutch ring 23 on the wheel side becomes slower than the rotational speed of the sleeve 26 on the engine side, for example, when traveling uphill in the neutral state with the clutch 12 released, the sleeve 26 The respective leading end portions 26a3 of the dog teeth 26a are guided by the respective fourth guide grooves 24e and are fitted into the respective third clutch engagement grooves 24f, so that the sleeve 26 and the second clutch ring 24 are synchronously rotated and shifted. Complete down operation.

  As described above, according to the meshing clutch device 20 of the first embodiment, the second embodiment, and the third embodiment, the first member 26 having the plurality of dog teeth 26a and each dog tooth 26a can come into contact with each other. A second member 23 having a plurality of clutch teeth 23b and a plurality of clutch fitting grooves 23c provided corresponding to the respective clutch teeth 23b and into which the respective dog teeth 26a are fitted, and the first member 26 and the second member When the member 23 rotates on the same axis and thrust is applied to one of the first member 26 and the second member 23, a plurality of guide grooves 23d for guiding the dog teeth 26a to the clutch teeth 23b are provided in the second member 23. Therefore, all the dog teeth 26a are guided to the respective clutch teeth 23b through the respective guide grooves 23c, and contacted with the respective clutch teeth 23b, the first member 26 and the second member 23 are provided. To synchronize with the dog teeth Impact can be reduced to receive the 6a1 per.

  As described above, according to the meshing clutch device 20 of the first embodiment, the second embodiment, and the third embodiment, the second member 23 is opposite to the first member 26 in the axial direction opposite to the second member 23. The three members 24 are arranged, and the third member 24 is provided in correspondence with each of the second clutch teeth 24b with which each dog tooth 26a can contact, and each dog tooth 26a. A plurality of second clutch engagement grooves 24c to be combined, and each dog tooth 26a to each second clutch tooth 24a in a state in which thrust is applied to one of the first member 26 and the third member 24, and the guide groove 23d Since the plurality of second guide grooves 24d for guiding in the reverse direction are formed, all the dog teeth 26a are guided to the second clutch teeth 24b via the second guide grooves 24d. The first member 26 and the first member 26 are in contact with each second clutch tooth 24b. To the member 24 to the synchronization state, can be reduced impact received hits 26a1 or dog teeth.

  As described above, according to the meshing clutch device 20 of the third embodiment, each dog tooth 26a is placed in a direction opposite to the guide groove in a state in which thrust is applied to one of the first member 26 and the second member 23. Since the plurality of third guide grooves 23e to be directed toward the second member 23 are formed in the second member 23, even if the relative rotational speed difference between the first member 26 and the second member 23 is reversed, all the dogs Since the teeth 26a are guided to the clutch teeth 23b through the third guide grooves 23e and are brought into contact with the clutch teeth 23b, the first member 26 and the second member 23 are synchronized with each other. The impact received per 26a can be reduced.

  As described above, according to the meshing clutch device 20 of the first embodiment, the second embodiment, and the third embodiment, the dog tooth 26a includes the base end portion 26a1 protruding from the first member 26 and the base end portion. 26a1 and the guide grooves 23d, 23e, 24d, and 24e and the clutch fitting grooves 23c, 23f, 24c, and 24f, and the front end portions 26a2 and 26a3 having arcuate cross sections. Therefore, since the tip end portion of the dog tooth contacting each guide groove 23d, 23e, 24d, 24e and each clutch fitting groove 23c, 23f, 24c, 24f has an arc-shaped cross section, the wear resistance of the dog tooth 26a is improved. It can be improved.

  As described above, according to the meshing clutch device 20 of the first embodiment, the second embodiment, and the third embodiment, the distal end portions 26a2, 26a3 protrude from the proximal end portion 26a1 in the circumferential direction so as to transmit torque, Since the engaging portions 23c1, 23f1, 24c1, and 24f1 capable of engaging the distal end portions 26a2 and 26a3 are formed in the clutch fitting grooves 23c, 23f, 24c, and 24f, the dog tooth 26a has the distal end portion 26a2. , 26a3 are locked by the locking portions 3c1, 23f1, 24c1, 24f1 formed in the clutch fitting grooves 23c, 23f, 24c, 24f, so that the clutch fitting grooves 23c, 23f, 24c, 24f It is possible to prevent inadvertent exit.

  As described above, according to the meshing clutch device 20 of the first embodiment, the second embodiment, and the third embodiment, each guide groove 23d, 23e, 24d, 24e has an arc-shaped cross section of the tip end portions 26a2, 26a3. Since the structure is formed deeper than the radius r, the dog teeth 26a that have entered the guide grooves 23d, 23e, 24d, and 24e are prevented from jumping out from the guide grooves 23d, 23e, 24d, and 24e. It is possible to reliably guide to the teeth 23b, 24b and the clutch fitting grooves 23c, 23f, 24c, 24f.

  As described above, according to the meshing clutch device 20 of the first embodiment, the second embodiment, and the third embodiment, each clutch fitting groove 23c, 23f, 24c, 24f is each guide groove 23d, 23e, 24d. 24e, the clutch engagement grooves 23c, 23f, 24c, 24f are formed deeper than the arc-shaped radius r of the cross-section of the tip portions 26a2, 26a3 of the dog teeth 26a. Therefore, the clutch engagement grooves 23c, 23f, 24c, and 24f can contact the base end portion 26a1 in addition to the arc-shaped portions of the distal end portions 26a2 and 26a3 of the dog teeth 26a to transmit torque. The strength of the teeth 26a can be improved.

  As described above, according to the meshing clutch device 20 of the first embodiment, the second embodiment, and the third embodiment, the second member 23 includes the input side shaft 22 and the output side shaft 28 of the automatic transmission 13. A clutch ring 23 is rotatably supported on one side and is rotationally connected to the other of the input side shaft 22 and the output side shaft 28, and the first member 26 is a second member on one of the input side shaft 22 and the output side shaft 28. As the sleeve 26 meshed with the clutch hub 25 fixed adjacent to the shaft 23 so as to be movable in the axial direction, it can be applied to a clutch device of an automatic transmission.

  In addition, when there are a plurality of embodiments, it is obvious that the characteristic portions of each embodiment can be appropriately combined unless otherwise specified.

DESCRIPTION OF SYMBOLS 13 ... Automatic transmission, 22 ... Input side shaft, 23 ... 1st clutch ring (2nd member), 23b ... Clutch tooth, 23c ... Clutch engagement groove, 23c1 ... Locking part, 23d ... guide groove, 23e ... third guide groove, 23f ... third clutch fitting groove, 23f1 ... locking part, 24 ... second clutch ring (third Member), 24b ... second clutch teeth, 24c ... second clutch engagement groove, 24d ... second guide groove, 24e ... fourth guide groove, 24f ... fourth clutch engagement Groove, 24f1 ... locking portion, 25 ... clutch hub, 26 ... sleeve (first member), 26a ... spline, 26a ... dog teeth, 26a1 ... proximal end, 26a2 ... tip part, 26a3 ... tip part, 28 ... output side shaft.

Claims (8)

A first member having a plurality of dog teeth;
A second member having a plurality of clutch teeth with which the respective dog teeth can contact, and a plurality of clutch engagement grooves provided corresponding to the respective clutch teeth and into which the respective dog teeth are fitted;
A plurality of guides for guiding the dog teeth to the clutch teeth in a state where the first member and the second member rotate on the same axis and thrust is applied to one of the first member and the second member. A meshing clutch device in which a groove is provided in the second member. In Claim 1, the 3rd member is arranged on the axial direction opposite side to the 2nd member to the 1st member,
The third member is provided with a plurality of second clutch teeth that can be brought into contact with the respective dog teeth, and a plurality of second clutch fittings that are provided corresponding to the respective second clutch teeth and that engage with the respective dog teeth. A plurality of guide teeth that guide the dog teeth to the second clutch teeth in a direction opposite to the guide grooves in a state where thrust is applied to one of the first member and the third member. A meshing clutch device having a second guide groove.   The plurality of third guide grooves for guiding each of the dog teeth in a direction opposite to the guide groove in a state in which thrust is applied to one of the first member and the second member according to claim 1. A meshing clutch device formed on two members.   4. The dog tooth according to claim 1, wherein the dog teeth are formed to be continuous with the base end portion protruding from the first member, and the guide grooves and the clutch engagements. A meshing clutch device having a tip having an arcuate cross section facing the groove.   5. The meshing clutch device according to claim 4, wherein the distal end portion protrudes in the circumferential direction so as to transmit torque from the base end portion, and a locking portion capable of locking the distal end portion is formed in each clutch fitting groove.   6. The meshing clutch device according to claim 4, wherein each guide groove is formed deeper than a radius of a circular arc section of the tip portion.   The mesh clutch device according to any one of claims 4 to 6, wherein each clutch engagement groove is formed deeper than each guide groove.   8. The second member according to claim 1, wherein the second member is rotatably supported on one of an input side shaft and an output side shaft of an automatic transmission and rotates on the other of the input side shaft and the output side shaft. A clutch ring that is coupled, and the first member is fitted to one of the input side shaft and the output side shaft so as to be movable in the axial direction with respect to a clutch hub fixed adjacent to the second member. Meshing clutch device which is a sleeve.

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