Gear shift lever operating mechanism

TECHNICAL FIELD

[0001] The present invention relates to a handling mechanism of a gearshift used by being attached in a shift fork of the handling mechanism of manual transmission.

BACKGROUND OF THE INVENTION

[0002] The handling mechanism of the manual transmission attaches a conventional gearshift in a shift fork, and it is operated by a gearshift in the H-shape substantially and is changing gear.

[0003] There is a fault that the operation is bad and the shifting the gear is not operated certainly if it gets used to shifting in order to operate the conventional gearshift in the H-shape. Also there is a fault that it makes the shifting to mistake.

[0004] Accordingly, the gears can be certainly changed in a shift up, a shift down, a neutral, or the reverse due to only sufficient operation by an operation lever to the forward-backward direction. Moreover, the gear can be changed certainly when it becomes familiar with.

[0005] The novel features which are believed to be characteristic of the invention, both as to its organization and method of operation, together with further objects and advantages thereof, are described below with reference to the accompanying drawings in which a presently preferred embodiment of the invention is illustrated as an example.

[0006] It is to be expressly understood, however, that the drawings are for the purpose of illustration and description only, and are not intended as a definition of the limits of the invention.

DISCLOSURE OF THE INVENTION

[0007] A handling mechanism of a gearshift comprises a gearshift provided at a shift fork of an handling mechanism of a manual transmission, projecting from a box of the handling mechanism slightly; a moving mechanism for the gearshift allowing it to move in a H-shaped line substantially, having a mechanism for right-left removing cam allowing to move to right and left directions and a forward-backward removing link allowing to move forward and backward directions; an handling mechanism allowing the gearshift to shift into reverse, neutral, first-speed, second-speed, third-speed and fourth-speed in order due to allow to operate the link and moving cam mechanism by operating a shift lever to the forward and backward directions. Therefore, the user can shift the gear up and down by operating the shift lever in the rightward and leftward direction, so that anybody can operate easily can prevent certainly to operate miss-control.

[0008] In addition, the gearshift is allowed the change lever to move along with a H-shaped line substantially by using four cams, so that the user can shift gears certainly, it has a simple structure and it is manufactured at low cost.

[0009] Moreover, since the gearshift is allowed the change lever to move in a H-shaped line substantially by using four cams, it is shifted up and down mechanically, the user, especially who loves the mechanical products, can use happily.

[0010] In addition, A handling mechanism of a gearshift comprises a gearshift provided at a shift fork of an handling mechanism of a manual transmission, projecting from a box of the handling mechanism slightly, providing an elongated hole at the projected portion thereof and a stopper at a tip portion thereof; a moving mechanism for the gearshift further including a right-left moving cam having a pair of support boards fixed to a case body in the handling mechanism of the manual transmission so as to cover both sides of the gearshift; a moving link forward and backward formed in the shape of a crank, attaching to a portion adjacent a rear end of the support and inserting into the elongated hole of the gearshift, allowing the gearshift to move forward and backward; and a cam part being attached to a portion adjacent a tip end of the support boards, allowing the gearshift to move to right and left directions; and a mechanism for the right-left moving cam including a moving abject to right and left directions engaging with the cam part and moving to right and left directions, and engaging with an engaging piece of the gearshift; and a handling mechanism further including a shift lever supported pivotably at one of the support boards so as to move forward and backward; an auto-reverse mechanism reversing the shift lever automatically to the central part as a predetermined portion due to move the shift lever one of forward and backward directions from the center portion; and a rotation mechanism allowing the shift lever to move reverse, neutral, first-speed, second-speed, third-speed, fourth-speed in order and opposite direction through the moving link and moving cam mechanism due to move the shift lever one of forward and backward. Therefore, the gearshift is allowed to move due to the operation of the four cams by the rollers or projections.

BRIEF DESCRIPTION OF THE DRAWINGS

[0011]
FIG. 1 is a side view showing the way in which an handling mechanism of the gearshift is attached in a first embodiment of the present invention;

[0012]
FIG. 2 is a plan view showing the way in which a handling mechanism of the gearshift is attached in a first embodiment of the present invention;

[0013]
FIG. 3 is a side view of a first embodiment of the present invention;

[0014]
FIG. 4 is a plan view of a first embodiment of the present invention;

[0015]
FIG. 5 is a front view of a first embodiment of the present invention;

[0016]
FIG. 6 is a reverse view of a first embodiment of the present invention;

[0017]
FIG. 7 is an explanation view of a gearshift in a first embodiment of the present invention;

[0018]
FIG. 8 is an explanation view of a first cum in a first embodiment of the present invention;

[0019]
FIG. 9 is an explanation view of a second cum in a first embodiment of the present invention;

[0020]
FIG. 10 is an explanation view of a third cum in a first embodiment of the present invention;

[0021]
FIG. 11 is an explanation view of a fourth cum in a first embodiment of the present invention;

[0022]
FIG. 12 is an explanation view of a shift pattern of a gear of a first embodiment of the present invention;

[0023]
FIG. 13 is an explanation view showing the way in which shift lever rotates pivotably rearward;

[0024]
FIG. 14 is an explanation view showing the way in which shift lever rotates pivotably forward;

[0025]
FIG. 15 is a side view showing a neutral state in a first embodiment of the present invention;

[0026]
FIG. 16 is a plan view showing a neutral state in a first embodiment of the present invention;

[0027]
FIG. 17 is a side view showing a reverse state in a first embodiment of the present invention;

[0028]
FIG. 18 is a plan view showing a reverse state in a first embodiment of the present invention;

[0029]
FIG. 19 is a side view showing a first-gear state in a first embodiment of the present invention;

[0030]
FIG. 20 is a plan view showing a first-gear state in a first embodiment of the present invention;

[0031]
FIG. 21 is a side view showing a second-gear state in a first embodiment of the present invention;

[0032]
FIG. 22 is a plan view showing a second-gear state in a first embodiment of the present invention;

[0033]
FIG. 23 is a side view showing a third-gear state in a first embodiment of the present invention;

[0034]
FIG. 24 is a plan view showing a third-gear state in a first embodiment of the present invention;

[0035]
FIG. 25 is a side view showing a fourth-gear state in a first embodiment of the present invention;

[0036]
FIG. 26 is a plan view showing a fourth-gear state in a first embodiment of the present invention;

[0037]
FIG. 27 is a side view showing a fifth-gear state in a first embodiment of the present invention;

[0038]
FIG. 28 is a plan view showing a fifth-gear state in a first embodiment of the present invention;

[0039]
FIG. 29 is a side view showing the way in which a handling mechanism of the gearshift is attached in a second embodiment of the present invention;

[0040]
FIG. 30 is a plan view showing the second embodiment of the present invention;

[0041]
FIG. 31 is a front view showing the second embodiment of the present invention;

[0042]
FIG. 32 is a side view showing the way in which a handling mechanism of the gearshift is attached in a third embodiment of the present invention;

[0043]
FIG. 33 is a plan view showing the third embodiment of the present invention;

[0044]
FIG. 34 is an explanation view of a gearshift in the third embodiment of the present invention;

[0045]
FIG. 35 is a side view showing the way in which a handling mechanism of the gearshift is attached in a fourth embodiment of the present invention;

[0046]
FIG. 36 is a side view showing the fourth embodiment of the present invention;

[0047]
FIG. 37 is a plan view showing the fourth embodiment of the present invention;

[0048]
FIG. 38 is an explanation view of an auto-reverse mechanism for an operation lever showing the fourth embodiment of the present invention;

[0049]
FIG. 39 is an explanation view of a rotation mechanism when shifting the gear up;

[0050]
FIG. 40 is an explanation view of a rotation mechanism when shifting the gear down;

[0051]
FIG. 41 is a side view showing the way in which a handling mechanism of the gearshift is attached in the fifth embodiment of the present invention;

[0052]
FIG. 42 is a plan view showing the way in which a handling mechanism of the gearshift is attached in the fifth embodiment of the present invention;

[0053]
FIG. 43 is a front view showing the fifth embodiment of the present invention;

[0054]
FIG. 44 is a back view showing the fifth embodiment of the present invention;

[0055]
FIG. 45 is a right side view showing the fifth embodiment of the present invention;

[0056]
FIG. 46 is a left side view showing the fifth embodiment of the present invention;

[0057]
FIG. 47 is an explanation view of a gearshift in the fifth embodiment of the present invention;

[0058]
FIG. 48 is an explanation view of a forward-backward moving link;

[0059]
FIG. 49 is an explanation view of a right-left sides moving cam;

[0060]
FIG. 50 is an explanation view of a shift pattern of a gear of the fifth embodiment of the present invention;

[0061]
FIG. 51 is a plan view of a mechanism for the right-left sides moving cam;

[0062]
FIG. 52 is a back view of a mechanism for the right-left sides moving cam;

[0063]
FIG. 53 an explanation view showing the way in which a locatable cam is attached showing a fifth embodiment of the present invention;

[0064]
FIG. 54 is an explanation view of a gear showing the fifth embodiment of the present invention;

[0065]
FIG. 55 is an explanation view of a pinion showing the fifth embodiment of the present invention;

[0066]
FIG. 56 is a an explanation view showing the way in which a locatable cam is attached showing a fifth embodiment of the present invention;

[0067]
FIG. 57 is an explanation view showing the way in which a handling mechanism is shifted into neutral;

[0068]
FIG. 58 is an explanation view showing the way in which a handling mechanism is shifted into a reverse position from the neutral position by operating a shift lever;

[0069]
FIG. 59 is an explanation view showing the way in which a handling mechanism is shifted into a reverse position;

[0070]
FIG. 60 is an explanation view showing the way in which a handling mechanism is shifted into a first-speed from the neutral position by operating the shift lever;

[0071]
FIG. 61 is an explanation view showing the way in which a handling mechanism is shifted into the first-speed;

[0072]
FIG. 62 is an explanation view showing the way in which a handling mechanism is shifted into a second-speed from the first-speed by operating the shift lever;

[0073]
FIG. 63 is an explanation view showing the way in which a handling mechanism is shifted into the second-speed;

[0074]
FIG. 64 is an explanation view showing the way in which a handling mechanism is shifted into a third-speed from the second-speed by operating the shift lever;

[0075]
FIG. 65 is an explanation view showing the way in which a handling mechanism is shifted into the third-speed;

[0076]
FIG. 66 is an explanation view showing the way in which a handling mechanism is shifted into a fourth-speed from the third-speed by operating the shift lever;

[0077]
FIG. 67 is an explanation view showing the way in which a handling mechanism is shifted into the fourth-speed;

[0078]
FIG. 68 is an explanation view showing the way in which a handling mechanism is shifted into a fifth-speed from the fourth-speed by operating the shift lever

[0079]
FIG. 69 is an explanation view showing the way in which a handling mechanism is shifted into the fifth-speed;

[0080]
FIG. 70 is a side view showing the way in which a handling mechanism of the gearshift is attached in a sixth embodiment of the present invention;

[0081]
FIG. 71 is a front view showing the sixth embodiment of the present invention;

[0082]
FIG. 72 is an explanation view of a right-left sides moving cam;

[0083]
FIG. 73 is an explanation view of a shift pattern of a gear of the sixth embodiment of the present invention;

[0084]
FIG. 74 is a side view showing the way in which a handling mechanism of the gearshift is attached in a seventh embodiment of the present invention;

[0085]
FIG. 75 is a front view showing the seventh embodiment of the present invention;

[0086]
FIG. 76 is an explanation view of a moving cam to right and left sides; and

[0087]
FIG. 77 is an explanation view of a mechanism for a moving cam to right and left sides.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0088] Preferred embodiments of the present invention are described in more detail below referring to the accompanying drawings.

[0089] FIGS. 1 to 28 illustrate a winding device of a first embodiment of the present invention. The numeral 1 shows a handling mechanism of the gearshift of this invention attached in the shift fork 4 of the handling mechanism 3 of the transmission of the manual transmission 2. The handling mechanism 1 of the gearshift comprises a gearshift 6, a gearshift move mechanism 11 and an operation mechanism 13. A gearshift 6 is attached in the shift fork 4 and projects more slightly than the box 5 of the handling mechanism 3 of the above-mentioned transmission. The gearshift move mechanism 11 includes four cams, that is, a first cam 7, second cam 8, third cam 9 and fourth cam 10, these cams allowing the gearshift 6 to move along a H-shaped line substantially. The operation mechanism 13 operates the gearshift move mechanism 11 by operating the operation lever 12 to the forward and backward directions.

[0090] As illustrated in FIG. 7, the gearshift 6 consists of a gearshift body 14 of a gearshift body 14 formed in the shape of a U letter, guides 15, 15 in the shape of a hemisphere and a roller 16. The gearshift body 14 is attached so as to unit with the shift fork 4. The guide 15 is formed in a tip portion of the side part of the gearshift body 14. The roller 16 is attached rotatably between the guides 15, 15.

[0091] As illustrated in FIGS. 1 to 6, The above-mentioned gearshift move mechanism 11 consists of a pair of support boards 17 and 17, the first and second axles 18 and 19, the first cam 7, the second cam 8, the third cam 9, the fourth cam 10, and a transmission mechanism 35. The support boards 17, 17 are fixed to the box 5 of the handling mechanism 3 so as to cover the both sides of the gearshift 6. The axles 18, 19 are attached rotatably at forward and backward portions in the support boards 17, 17 respectively. The first cam 7 is fixed to a substantial center portion of the first axle 18 and includes a thrust 20 to neutral, thrust 21 to reverse, thrust 22 to second-speed and thrust 23 to fourth-speed as illustrated in FIG. 8. Also the first cam 7 thrusts the roller 16 of the gearshift 6 so that it moves to the center portion when the gearshift shifts into neutral and it moves to the backward portion when the gearshift shifts in second- and fourth-speed. The second cam 8 is fixed to the part adjacent the right side of the first axle 18 and includes thrusts 25, 25 for the guide at the both sides thereof. Also the second cam 8 thrusts the guide 15 positioned at right side of the gearshift 6 so that it moves to the left side when the gearshift shifts into the first and second-speed. The third cam 9 is fixed to the central part of the second axle 19 and includes thrust 26 to neutral, thrust 27 to the first-speed, thrust 28 to the third-speed and thrust 29 to the fifth-speed as illustrated in FIG. 10. Also the third cam 9 thrusts the roller 16 of the gearshift 6 so that it moves to the forward portion when the gearshift shifts in the first-, third- and fifth-speed. The fourth cam 10 is fixed to the part adjacent left side of the second axle 19 and includes thrust 30, 30 for the guide at the both sides thereof as illustrated in FIG. 11. Also the fourth cam 10 thrusts the guide 15 positioned at the left side of the gearshift 6 so that it moves to the right side when the gearshift shifts into the reverse, fourth-speed and five-speed. The transmission mechanism 35 consists of a gear 31 fixed to a part adjacent the end portion of the right side of the first axle 18 and a gear 34 fixed to the second axle 19 gearing with the gear 31 through even-numbered pinions, two pinions 32, 33 in this embodiment.

[0092] The operating mechanism 13, as illustrated in FIGS. 1 to 6, consists of a shift lever 12, an auto-reverse mechanism 37 for the shift lever and a rotation mechanism 38. The shift lever 12 is supported pivotably at the one of the support board 17 of he moving mechanism 11 by a pivot pin 36, rotating forward and backward. The auto-reverse mechanism 37 puts the shift lever back to the center portion automatically due to release it from forward and backward portions after rotating. The rotation mechanism 38 allows the shift lever 12 to rotate at fixed degree, 45 degrees in this embodiment by controlling the shift lever 12 forward or backward.

[0093] The auto-reverse mechanism 37 consists of a rod 41, a support body 42, coiled spring 45, 46. The rod 41 is supported pivotably at a lower end of a rod support part 39 projected downward from the pivot pin 36 of the shift lever 12 by a pivot pin 40. The support body 42 is fixed to the box 5 which supports slidely at a center part of the rod 41. The coiled springs 45,46 are interposed between spring support parts 43, 44 provided at the rod 41 and the support body 42.

[0094] As illustrated in FIGS. 12 to 14, the rotation mechanism 38 consists of a rotation board 48, a pair of rotation arms 49, 49, an operation arm 52, a through hole 54 and spring 55. The rotation board 48 includes a plurality of concave portions, eight concave portions in this embodiment provided at outer circumferential portion thereof fixed to the first axle 18, located at outside the left support board. The rotation arms 49 is attached and supported rotatably to the first axle 18 and located at outside of the rotation board 48 and inside the left support board 17, being allowed to move upward and downward, having a free end portion thereof projecting upwardly. One end portion of the operation arms 52 is supported to the free end portion of the rotation arms 49 by a pivot pin 50, and another end portion thereof is supported to a center portion of the shift lever 12 by a pivot pin 51. The through hole 54 is provided at the support board 17 located upward at the first axle 18 so as to engage an engage pin 53 provided at the rotation arms 49 into the concave part 47 of the rotation board 48 and project outwardly. The spring 55 allows the engage pin 53 to engage into the concave part 47 by biasing the rotation arms 49 by a resilient force thereof.

[0095] When shifting into neutral, in the handling mechanism of the gearshift, as illustrated in FIGS. 15 and 16, the thrust part 20 of the first cam 7 and thrust part 26 of the third cam 9 push so as to locate the roller 16 of the gearshift 6 at the neutral stage.

[0096] When shifting into the reverse stage from the neutral stage, the operation arm 52 of the rotation mechanism 38 is pressed forward by rotating the shaft lever 12 by pressing forwardly, and the rotation arms 49 rotates and projects upward.

[0097] Then, after the rotation 48 rotates at 45 degrees by the engage pin 53 engages the concave part 47. If an operator releases the shift lever 12 in this situation, the shift lever 12 returns automatically to the neutral stage by a resilient force of the coiled springs 45, 46.

[0098] As illustrated in FIGS. 17 and 18, after the rotation board 48 rotates at 45 degrees by operation of the rotation mechanism 38, the first axle 18 and second axle 19 rotate likewise. Then the guide 15 is pressed by the thrust part 30 of the fourth cam 10 so as to move in rightward direction, and the thrust part 21 of the first cam 7 allows the roller 16 to move backward and a series of movement shifts the gear.

[0099] When shifting into neutral from the reverse stage, the first and second axles 18 and 19 rotate at 45 degrees by the rotation mechanism due to press the shift lever 12 backward and rotate, and the reverse stage is shifted into the neutral stage.

[0100] When shifting into the first-speed from the neutral stage, as illustrated in FIGS. 19 and 20, due to press the shift lever 12 backward and rotates, the first and second axles 18,19 rotate at 45 degrees by the rotation mechanism 38, and the thrust part 25 of the second cam 8 presses the guide 15 so as to move to the leftward direction. After that, the roller 16 of the gearshift 6 is allowed to move to the forward direction by the thrust 27 of the third cam 9 and the gear is shifted.

[0101] When shifting into the second-speed from the first-speed, as illustrated in FIGS. 21 and 22, due to press the shift lever 12 backward and rotates, the first and second axles 18, 19 rotate at 45 degrees by the rotation mechanism 38, and the roller 16 of the shift lever 6 is allowed to move backwardly by the thrust part 22 of the first cam 7. After that, the gear is shifted as the shift lever 6 moves to the leftward direction by the second cam 8.

[0102] When shifting into the third-speed from the second-speed, as illustrated in FIGS. 23 and 24, due to press the shift lever 12 backwards and rotate, the roller 16 of the shift lever 6 is allowed to move to the forward direction by the thrust part 28 of the third cam 9. After that, the gear is shifted as the shift lever 6 of the second cam 8 is cancelled its pressing force.

[0103] When shifting into the fourth-speed from the third-speed, as illustrated in FIGS. 25 and 26, due to press the shift lever 12 backwardly and rotate, the roller 16 of the shift lever 6 is allowed to move to the backward direction by the thrust part 23 of the first cam 7. After that, the gear is shifted as the guide 15 located at left side of the shift lever 6 is pressed by the thrust part 30 of the fourth cam 10 so as to move to the rightward direction.

[0104] When shifting into the fifth-speed from the fourth-speed, as illustrated in FIGS. 27 and 28, due to press the shift lever 12 backwardly and rotate, the moving state in the shift lever 6 is maintained by pressing the thrust part 30 of the fourth cam 10, and the gear shifted as the roller 16 of the shift lever 6 is allowed to move to the forward direction by the thrust part 29 of the third cam 9.

[0105] In addition, in the shifting the gear down, that is fifth-speed to the neutral stage in order, by pressing the shift lever 12 to the forward direction and rotating, the gear is shifted down 12 by rotating the first and second axles to the opposite direction,

[0106] Other Embodiment

[0107] Other embodiments of the present invention will now be described referring to FIGS. 29 to 77. Through the drawings of the embodiments, like components are denoted by like numerals as of the first embodiment and will not be further explained in great detail.

[0108] A second embodiment of the present invention is illustrated in FIGS. 29 to 31. It is distinguished from the first embodiment by the fact that the first axle 18 and second axle 19 are connected rotatably by a gear 31A and a gear 34A. A handling mechanism 1A of the gearshift according to the second embodiment has similar advantages to that according to the first embodiment.

[0109] A third embodiment of the present invention is illustrated in FIGS. 32 to 34. It is distinguished from the first embodiment by the fact that A thrust rod 56 is attached fixedly between the guides 15, forming in the shape of a stick. A handling mechanism 1B of the gearshift according to the third embodiment has similar advantages to that according to the first embodiment.

[0110] A fourth embodiment of the present invention is illustrated in FIGS. 35 to 40. It is distinguished from the first embodiment by the fact that the handling mechanism 13 is replaced from another handling mechanism 13A. The handling mechanism 13A consists of a shift lever 12A, an auto-reverse mechanism 37A and rotation mechanism 38A. The shift lever 12A formed in the shape of a L letter is supported rotatably at one of the support boards 17 to the forward and backward directions, being supported at the corner thereof by the pivot pin 36. The auto-reverse mechanism 37A further includes a spring 57, spring engage pin 58 and spring engage pin 59 of the lever-side.

[0111] The spring 57 is fixed by the pivot pin 36, both ends thereof projecting in the shape of an arm and downward, having the force to return automatically the shift lever 12 to the center position due to move it to the forward and backward directions from the center position and release it. The spring-engage pin 58 is fixed to the one of the support boards so as to locate between portions adjacent the tip end of the spring 57. The spring-engage pin 59 of the lever-side is provided between the spring 57 and a portion adjacent the corner of the shift lever 12A.

[0112] Rotation mechanism 38A further includes a rotation board 48A, 48A, a pair of rods 63, 63 and spring 64. The rotation boards 48A, 48A are provided to the first and second axles 18,19, having a plurality of pins 60, eight pins 60 in this embodiment, fixed at the predetermined space to the outer portion thereof, the rotation board 48A rotating at the predetermined degree, 45 degrees in this embodiment, due to operate the shift lever 12A to the forward and backward directions. The rods 63, 63 is supported at the rear end of the shift lever 12A by the pivot pin 61, having concave parts 62, 62 which engage with two pins 60, 60 on the rotation boards 48A in case that the shift lever 12 is positioned at the center position. The spring 64 is provided between the rotation boards 48A, biasing the rods 63 to the direction of the rotation boards 48A.

[0113] A handling mechanism 1C of the gearshift with the operating mechanism 13A according to the third embodiment has similar advantages to that according to the first embodiment.

[0114] A fifth embodiment of the present invention is illustrated in FIGS. 41 to 69. It is distinguished from the first embodiment by the fact that the handling mechanism of a gearshift 1D further includes a moving mechanism 11A and operating mechanism 13B.

[0115] The moving mechanism 11A includes a moving link 65 which allows to move the gearshift 6A with a H-shape to the forward and backward directions and a moving cam mechanism 66 which allows the cams to move to the rightward and leftward directions. The handling mechanism 13B allows operating the moving cam mechanism 66 and moving link 65 by controlling the shift lever 12B to the forward and backward direction and allows operating the gearshift 6A to shift each gear, that is reverse position, neutral position, first-speed, second-speed, third-speed or fourth-speed,

[0116] As illustrated in FIG. 44, the gearshift 6A further includes a shift lever body 67, elongated hole 68 and engage piece 69. The elongated hole 68 is formed at a projection 67a projected from the box 5. The engage piece 69 is formed at a projected end portion of the shift lever body 67.

[0117] In detail, the moving link 65 of the moving mechanism 11A is attached rotatably to the portion adjacent the rear part of the pair of the support board so as to move the gear shift 6A to the forward and backward directions, forming in the shape of a link, being inserted into the elongated hole 68.

[0118] Moreover, the moving cam mechanism 66 of the moving mechanism 11A further includes a moving cam 71 and moving body 76. As illustrated in FIG. 45, the moving cam 71 having a cam part 70 formed in the shape of a groove is attached rotatably to a part adjacent the tip portion of the support board 17, 17, allowing the gearshift 6A to move to the rightward and leftward directions. The moving body 76 moves slidely on the support axles 75, 75 fixed to the support board 17, 17, having an engage concave part which engages with the engage piece 69 of the gearshift 64, and engaging the cam part 70 and an engage projection 72 so that it moves to the rightward and leftward directions.

[0119] The operating mechanism 13B consists of a shift lever 12B, auto-reverse mechanism 37B and rotation mechanism 38B. The shift lever 12B formed in the shape of a L letter is attached rotatably to the portion adjacent the lower part of the tip end of one of the support board 17. The auto-reverse mechanism 37B consists of an elongated hole 79 formed at the part adjacent the support portion of the shift lever 12B, returning automatically to the center position due to allow the shift lever 12B to rotate from the center position to the rear position and from the center position to the front position and release; a support axle 80 playing part in a stopper fixed to the one of the support board 17 so as to pass through the elongated hole 79; a support axle 81 fixed to the shift lever 12B and a part adjacent the center portion of the elongated hole 79; and a spring attached the support axle 78 to the center part thereof, having bar members at the both ends thereof abutting the support axles 80, 81 and allowing the shift lever 12B to locate at the center position all the time. The rotation mechanism 38B allows the gearshift 6A to shift the reverse stage, neutral stage, first-speed, second-speed, third-speed, fourth-speed in order at least, fourth-speed to fifth-speed in this embodiment due to operate the moving link 65 and moving link 65 and moving cam mechanism 66 by operating the shift lever 12B to the forward and backward directions.

[0120] The rotation mechanism 38B consists of a first rotating body 84, a second rotating body 93, a first lever 95, a spring 96, a second lever 98, a spring 100, a locatable cam 102, a stopper 104, a gear 108, a pinion 110, a locatable cam 112 and a stopper 114. The first rotating body 84 includes a first engage pin 86, second engage pin 87, third engage pin 88 and fourth engage pin 89 arranged at 45 degrees intervals at an outer circumferential portion between rotation boards 85 which fixed to the support axle 71a projected; and fifth engage pin 90 arranged at outer circumferential part between the first engage pin 86 and the fourth engage pin 89. The second rotating body 93 includes a sixth engage pin 91 provided at a portion away from the fourth engage pin 89 at 45 degrees on the outer circumferential portion thereof and a seventh engage pin 92 provided at a portion away from the fifth engage pin 90 at 45 degrees on the outer circumferential portion thereof. The first lever 95 is supported pivotably a back end portion thereof at a center part of the shift lever 12B and engages with the first and second engage pins 86, 87 when in reverse stage; the second and third engage pins 87, 88 when in neutral position; the third and fourth engage pins 88, 89 when in first-speed; the fourth engage pin 89 when in second-speed; the fifth engage pin 90 when in third-speed position; the fifth engage pin 90 when in fourth-speed; and the first engage pin 86 when in fifth-speed. The spring 96b biases engage parts 94, 94 of the first lever 95 to an engage direction and engages with the engage pins 86, 87, 88, 89, 90 all the time. The second lever 98 is supported the rear end thereof at the center part of the shift lever 12B, including engage parts 97, 97 which engages with a sixth engage pin 91 when shifting in second and third-speed and engages with a seventh engage pin 92 when shifting in the fourth and fifth-speed. The spring 100 biases the engage parts 97, 97 to the engage direction and the engage parts 97 engage with the sixth and seventh engage pins 91, 92 and biases the engage part 97, 97 to the ubutting direction that the engage parts 97 abuts against a stopper board 99. The locatable cam 102 is supported rotatably at the support board 17 of the moving cam, having engage concave portions 101, 101, 101, 101, 101, 101 and 101 provided at an outer circumferential part thereof engage (stop) at the reverse, neutral, first-speed, second-speed, third-speed, fourth-speed or fifth-speed stages in the moving cam 71 fixed inside the outer support board 17. The stopper 104 is provided at the other support board 17 so as to engage with the engage with the engage concave portions 101 of the moving cam 102. The gear 108 is fixed to the other support axle 71b positioned outside of the other support board 17, having a non-gear part 105 corresponding to shifting into neutral stage, a first non-gear part 106 corresponding to shifting into the third-speed stage from the second-speed stage and a second non-gear part 107 corresponding to shifting into the fifth-speed stage from the fourth-speed stage. The pinion 110 engages with the gear 108, having a cut portion 109 which is entered the non-gear parts 105, 106 and 107 of he gear 108 thereinto. The locatable cam 112 is fixed to inside of the other support board 17, having engaged concave portions 111, 111, 111 and 111 provided at an outer circumferential portion thereof. The stopper 114 is provided at the other support board 17 so as to bias by a spring 113 due to engage with the engage concave portions 111.

[0121] As illustrated in FIG. 57, in the handling mechanism 1D of the gearshift, when leaving the car in neutral, the engage part 94 of the first lever 95 is located at the engaging state with the second and third engage pins 87 and 88 of the first moving object 84, and the engage projection 72 of the moving body 76 is located at a neutral position 115 of the cam part 70 of he moving cam 71. In addition, the cut portion 109 of the pinion 110 is located at a central portion of the non-gear portion 105 of the gear so that the moving link 65 is located upwardly.

[0122] As illustrated in FIGS. 58 and 59, when shifting into reverse from the neutral position, due to rotate the shift lever 12B backward and return it, the first moving object 84 is giving a backward rotation at the state that the engage part 94 of the first lever 95 engages with the second engage pin 87, after that, the engage part 94 engages with the first and second engage pins 86, 87, and the moving cam 71 rotates integrally with the rotation of the first moving object 84. Therefore, the engage projection 72 is located at a reverse position of the cam part 70, a third cog 117 located at back portion of the non-gear portion 105 of the gear 108 engages with the pinion 110 and the moving link 65 is located forwardly.

[0123] As illustrated in FIGS. 60 and 61, when shifting into the first-speed from the neutral stage, due to rotate the shift lever 12B forward and return it, the first moving object 84 is giving a forward rotation at the state that the engage part 94 of the first lever 95 engages with the third engage pin 88, after that, the engage part 94 engages with the third and fourth engage pins 88, 89, and the moving cam 71 rotates integrally with the rotation of the first moving object 84. Therefore, the engage projection 72 is located at a first-speed position 118 of the cam part 70, a first cog 119 located at tip portion of the non-gear portion 105 of the gear 108 engages with the pinion 110 and the moving link 65 is located backwardly.

[0124] As illustrated in FIGS. 62 and 63, when shifting into the second-speed from the first-speed, due to rotate the shift lever 12B forward and return it, the first moving object 84 is giving a forward rotation at the state that the engage part 94 of the first lever 95 engages with the fourth engage pin 89, after that, the engage part 94 engages with the fourth engage pin 89, and the engage part 97 of the second lever 98 engages the sixth engage pin 91 of the second moving object 93, and the moving cam 71 rotates integrally with the rotation of the first moving object 84. Therefore, the engage projection 72 is located at a second-speed position 120 of the cam part 70, a rear end portion of the first cog 119 engages with the pinion 110 and the moving link 65 is located forwardly.

[0125] As illustrated in FIGS. 64 and 65, when shifting into the third-speed from the second-speed, due to rotate the shift lever 12B forward and return it, the second moving object 93 is giving a forward rotation at the state that the engage part 97 of the second lever 98 engages with the sixth engage pin 91, after that, the engage part 97 engages with the sixth engage pin 91 and the engage part 94 of the first lever 95 engages the fifth engage pin 90 of the first moving object 84, and the moving cam 71 rotates integrally with the rotation of the second moving object 93. Therefore, the engage projection 72 is located at a third-speed position 121 of the cam part 70, a tip portion of a second cog 122 engages with the pinion 110 passing through the first non-gear portion of the gear 108 and the moving link 65 is located backwardly.

[0126] As illustrated in FIGS. 66 and 67, when shifting into the fourth-speed from the third-speed, due to rotate the shift lever 12B forward and return it, the first moving object 84 is giving a forward rotation at the state that the engage part 94 of the first lever 95 engages with the fifth engage pin 90, after that, the engage part 94 engages with the fifth engage pin 90, and the engage part 97 of the second lever 98 engages the seventh engage pin 92 of the second moving object 93, and the moving cam 71 rotates integrally with the rotation of the first moving object 84. Therefore, the engage projection 72 is located at a fourth-speed position 123 of the cam part 70, a rear end portion of the second cog 122 engages with the pinion 110 and the moving link 65 is located forwardly.

[0127] As illustrated in FIGS. 68 and 69, when shifting into the fifth-speed from the fourth-speed, due to rotate the shift lever 12B forward and return it, the second moving object 93 is giving a forward rotation at the state that the engage part 97 of the second lever 95 engages with the fifth engage pin 90, after that, the engage part 97 engages with the seventh engage pin 92 and the engage part 94 of the first lever 95 engages the first engage pin 86 of the first moving object 84, and the moving cam 71 rotates integrally with the rotation of the second moving object 93. Therefore, the engage projection 72 is located at a fifth-speed position 124 of the cam part 70, a tip portion of the third cog 177 passes through the second non-gear portion 107 and engages with the pinion 110 and the moving link 65 is located backwardly.

[0128] Additionally, when the operator shifts each gear in order at the shift down, due to rotate the shift lever 12B forward and return it, the first and second levers 95, 98 and first and second moving objects 84, 93 are operated at the opposite order comparing with the above-mentioned operation.

[0129] A sixth embodiment of the present invention is illustrated in FIGS. 70 to 73. It is distinguished from the fifth embodiment by the fact that a cam part 70A further includes a sixth-speed position 125, and the sixth-speed can be shifted. A handling mechanism 1E according to the sixth embodiment has similar advantages to that according to the fifth embodiment.

[0130] A seventh embodiment of the present invention is illustrated in FIGS. 74 to 77. It is distinguished from the fifth embodiment by the fact that the moving cam mechanism 66 is replaced from another moving cam mechanism 66A which further includes a moving cam 71A having a cam part 70B formed in the shape of a projection and a moving body 76A having an engage part 126 which engages with the cam part 70B. A handling mechanism 1F with the moving cam mechanism 66A according to the sixth embodiment has similar advantages to that according to the fifth embodiment.

INDUSTRIAL APPLICABILITY

[0131] As set forth above, the handling mechanism of the gearshift is suitable for being attached in a passenger car, commercial vehicle including bus and truck, urgent vehicles, and public service vehicle, a racing car using racing, etc. and is suitable for being used.

[0132] Note:

[0133] 1. A handling mechanism of a gearshift includes a gearshift attached to a shift fork of an handling mechanism of a manual transmission, projecting from a box of the handling mechanism slightly; a moving mechanism for the gearshift having four cams allowing the change lever to move in a H-shaped line substantially; and an handling mechanism allowing to operate by operating a shift lever to the forward and backward directions.

[0134] 2. A handling mechanism of the gearshift includes a gearshift attached in the shift fork of the handling mechanism of the transmission of the manual transmission, formed in U-shape, having projects at the both side of the tip portions thereof and rollers attached between the guides; a gearshift move mechanism further including a pair of support boards fixed to a box of the handling mechanism so as to cover the both sides of the gearshift, first and second axles attached rotatably at forward and backward portions in the support boards respectively, a first cam fixed to a substantial center portion of the first axle, the first cam thrusting the roller of the gearshift so that it moves to the center portion when the gearshift shifts into neutral and it moves to the backward portion when the gearshift shifts in second- and fourth-speed, a second cam fixed to the part adjacent the right side of the first axle, the second cam thrusting the guide positioned at right side of the gearshift so that it moves to the left side when the gearshift shifts into the first and second-speed, a third cam fixed to the central part of the second axle, the third cam thrusting the roller of the gearshift so that it moves to the forward portion when the gearshift shifts in the first-, third- and fifth-speed, a fourth cam fixed to the part adjacent left side of the second axle, the fourth cam thrusting the guide positioned at the left side of the gearshift so that it moves to the right side when the gearshift shifts into the reverse, fourth-speed and five-speed and a transmission mechanism including a drive gear fixed to the first axle and a driven gear fixed to the second axle gearing with one of the drive gear directly and through even-numbered of pinions; and an operation mechanism further including a shift lever supported pivotably at the one of the support boards of the moving mechanism with rotating forwardly and backwardly, an auto-reverse mechanism putting the shift lever back to the center portion automatically due to release it from forward and backward portions after rotating, and the rotation mechanism allowing the shift lever to rotate at fixed degree by controlling the shift lever forwardly or backwardly.

[0135] 3. A handling mechanism of the gearshift includes a gearshift attached in the shift fork of the handling mechanism of the transmission of the manual transmission, formed in U-shape, having projects at the both side of the tip portions thereof and a thrust rod, forming in the shape of a stick attached fixedly between the guides; a gearshift move mechanism further including a pair of support boards fixed to a box of the handling mechanism so as to cover the both sides of the gearshift, first and second axles attached rotatably at forward and backward portions in the support boards respectively, a first cam fixed to a substantial center portion of the first axle, the first cam thrusting the thrust rod of the gearshift so that it moves to the center portion when the gearshift shifts into neutral and it moves to the backward portion when the gearshift shifts in second- and fourth-speed, a second cam fixed to the part adjacent the right side of the first axle, the second cam thrusting the guide positioned at right side of the gearshift so that it moves to the left side when the gearshift shifts into the first and second-speed, a third cam fixed to the central part of the second axle, the third cam thrusting the thrust rod of the gearshift so that it moves to the forward portion when the gearshift shifts in the first-, third- and fifth-speed, a fourth cam fixed to the part adjacent left side of the second axle, the fourth cam thrusting the guide positioned at the left side of the gearshift so that it moves to the right side when the gearshift shifts into the reverse, fourth-speed and five-speed and a transmission mechanism including a drive gear fixed to the first axle and a driven gear fixed to the second axle gearing with one of the drive gear directly and through even-numbered of pinions; and an operation mechanism further including a shift lever supported pivotably at the one of the support board of the moving mechanism with rotating forward and backward., an auto-reverse mechanism putting the shift lever back to the center portion automatically due to release it from forward and backward portions after rotating, and the rotation mechanism allowing the shift lever to rotate at fixed degree by controlling the shift lever forwardly or backwardy.

Number	Date	Country	Kind
2000-31725	Feb 2000	JP
2001-5520	Jan 2001	JP

Gear shift lever operating mechanism

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