CN102654195A - Shift drum stop plate - Google Patents

Shift drum stop plate Download PDF

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Publication number
CN102654195A
CN102654195A CN2012100262096A CN201210026209A CN102654195A CN 102654195 A CN102654195 A CN 102654195A CN 2012100262096 A CN2012100262096 A CN 2012100262096A CN 201210026209 A CN201210026209 A CN 201210026209A CN 102654195 A CN102654195 A CN 102654195A
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CN
China
Prior art keywords
speed
changing drum
check plate
plate
pin stop
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Granted
Application number
CN2012100262096A
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Chinese (zh)
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CN102654195B (en
Inventor
崔煌植
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Honda Motor Co Ltd
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Honda Motor Co Ltd
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Publication of CN102654195A publication Critical patent/CN102654195A/en
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Publication of CN102654195B publication Critical patent/CN102654195B/en
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Abstract

The invention provides a shift drum stop plate realizing cost reduction and simultaneously ensuring sufficient strength. The shift drum stop plate (60) is provided with a plate portion (61) and a plurality of stop pin portions (62) protruding from one side surface of the plate portion (61) and clamping with claws (55c, 55d) of a shift arm (55), the stop pin portions (62) are respectively in the shape of a column, and provided with a cylindrical portion and an extension reinforcing portion (62b) formed in one integration, the cross section shape of a stop pin portion (62) is a horseshoe formed by a circular arc portion (62c), extending line portions (62f, 62g), and an inner contour portion (62h), the plate portion (61) and the plurality of stop pin portions (62) are manufactured by sintering of compression powder after integral pre-forming.

Description

The speed-changing drum check plate
Technical field
The present invention relates to a kind of speed-changing drum check plate (shift drum stop plate) of gear of two-wheeled grade.
Background technique
The gear of two-wheeled grade intermittently rotates through making speed-changing drum, and the reverse shift fork that engages with speed-changing drum is moved, thereby changes the engagement of the gear train that gear possessed and carry out speed change.
Possesses the intermittent feeding mechanism that the speed-changing drum of making is intermittently rotated in the speed changer; And be provided with the rotation of following speed change axle (shift spindle) and the speed-changing drum check plate that intermittently rotates with predetermined angular; This speed-changing drum check plate is fixed in speed-changing drum; Follow the rotation of speed-changing drum check plate, speed-changing drum is rotated.
This speed-changing drum check plate is the outstanding member that is provided with a plurality of pin stop portion in a side of plate-like portion, wherein, forms camming surface around this plate-like portion, and the speed-changing drum check plate is accepted rotating force in pin stop portion from intermittent feeding mechanism.Therefore, pin stop portion requires stronger intensity owing to receiving big load.
Therefore, the speed-changing drum check plate is through with the split formation respectively of plate-like portion and pin stop portion, afterwards stop pin is pressed into plate-like portion and makes integratedly.But the parts number of packages of such speed-changing drum check plate increases, and; For stop pin is pressed into plate-like portion; And complex-shaped and require dimensional accuracy, and, plate-like portion and these both sides of stop pin are required high-precision processing in order to ensure the intensity of the pin stop portion that receives load; And need stop pin be pressed into the operation of plate-like portion, thereby cause the increase of manufacture cost.
In order to eliminate such unfavorable condition, known have through punch process or sinter forging method, plate-like portion and pin stop portion is the integrally formed and speed-changing drum check plate (for example, with reference to patent documentation 1, patent documentation 2) that produces.
Technical paper formerly
Patent documentation
[patent documentation 1] japanese kokai publication hei 9-210201 communique
[patent documentation 2] japanese kokai publication hei 9-19738 communique
The speed-changing drum check plate of record is the member that molds through with plate-like portion and pin stop portion impact briquetting integratedly in the above-mentioned patent documentation 1, and the operation that pin stop portion is pressed into plate-like portion through reduction realizes the reduction of manufacture cost.But; Based on so stamping forming manufacturing process since be shaped through stamping die outstanding pin stop portion is set after; Also form camming surface and circular hole, so process number is many through stamping die, and because the demanding product precision of check plate; Therefore less can reduce the manufacture cost of drawing, further require cost cutting.
In addition, the speed-changing drum check plate of record is the purpose that is reduced to the realization cost in the above-mentioned patent documentation 2, and will be formed with the plate-like portion and the integrally formed member of columned pin stop portion of camming surface through sinter forging.That is, the metal powder of agglomerated material is filled in the mould of powders compression device and compresses, form the preform before the sintering of speed-changing drum check plate, and this preform is moved into sintering furnace carry out sintering and obtain sintering body.Through mould sintering body is forged afterwards and make.
But, because such pin stop portion forms from outstanding cylindric of plate-like portion, therefore through the powders compression device during with the preforming of metal powder compression; The section area with respect to the cross section of compression direction of pin portion is compared with the section area of plate-like portion sharp and is reduced, and therefore when impact briquetting, pulverous agglomerated material can not be filled into the tiny part of the mould that forms pin portion fully; The density of agglomerated material reduces easily, and is difficult to guarantee the full intensity of pin portion, thereby in order to manage the density of agglomerated material; Guarantee the intensity of the member behind the sintering; And the special management man-hours such as mold management when producing impact briquetting, and, for density or the intensity that satisfies the speed-changing drum check plate; And need after sintering generates, append forging process, thereby manufacture cost increases.
Summary of the invention
The present invention proposes in view of such situation, and its purpose is to provide a kind of speed-changing drum check plate of realizing cost cutting and having guaranteed full intensity simultaneously.
The present invention is used to solve above-mentioned problem; First aspect of the present invention is the speed-changing drum check plate, and it constitutes gear, it is characterized in that; Have plate-like portion and a plurality of pin stop portion; Plate-like portion has the camming surface that joins with the speed-changing drum retainer around, and a plurality of pin stop portion upwards whenever were provided with from a side of this plate-like portion is outstanding at a distance from predetermined distance in whole week of this plate-like portion, and engages with the fixing pawl of the shifting arm of the principal arm of speed change axle; This pin stop portion is a column; And the prolongation reinforcing part that is formed with cylindrical portion and prolongs towards the rotating center side of this speed-changing drum check plate from this cylindrical portion, the horse shoe shaped of the shape of cross section of this pin stop portion for constituting, wherein the pawl butt of circular arc part and this shifting arm by circular arc part, elongation line portion, interior contour portion; Elongation line portion prolongs from each end of this circular arc part towards the rotating center side of the speed-changing drum check plate mode with the inboard of the scope of the track of this pawl motion of not getting into said shifting arm; Interior contour portion links up the end of this elongation line portion, and said plate-like portion and said pin stop portion be through compressing powder and behind the one preforming, carries out sintering and makes.
Second aspect of the present invention is characterised in that, possesses the binding annulus that the prolongation reinforcing part with pin stop portion links up.
The third aspect of the invention is characterized in that on the basis of the described speed-changing drum check plate of first aspect, and the said elongation line portion in the sectional shape of said pin stop portion tangentially extends from said circular arc part smoothly.
Fourth aspect of the present invention is characterized in that on the basis of the described speed-changing drum check plate of second aspect the elongation line portion in the sectional shape of said pin stop portion tangentially extends from circular arc part smoothly.
The 5th aspect of the present invention is on the basis of second aspect or the described speed-changing drum check plate of fourth aspect; It is characterized in that; Be provided with the bolt hole that the bolt that supplies to be used to install said speed-changing drum check plate connects in the inboard of the inner peripheral surface of said binding annulus, the guide of said binding annulus double as bolt.
The 6th aspect of the present invention is characterized in that on the basis of described speed-changing drum check plate aspect the 5th height of the height of said binding annulus and the head of said bolt about equally.
The 7th aspect of the present invention is on the basis of described speed-changing drum check plate aspect the 5th; It is characterized in that; Said speed-changing drum check plate is used for to set the gear of shifting arm inwardly with the overlapping mode of principal arm, and the height of the head of the said bolt of aspect ratio of said binding annulus is high.
Eight aspect of the present invention is characterized in that on the basis of the described speed-changing drum check plate in aspect the 6th or the 7th aspect said bolt is made up of the concave head bolt that is provided with well at bolt head.
The invention effect
Described according to a first aspect of the invention speed-changing drum check plate; Pin stop portion forms through cylindrical portion with from the prolongation reinforcing part of cylindrical portion to the rotating center direction prolongation of speed-changing drum check plate; Therefore compare with pin stop portion in the past; Cross sectional area enlarges, and can realize the raising of intensity.
And; The shape of cross section of pin stop portion is a horse shoe shaped; It is by with the circular arc part of the pawl butt of shifting arm, constitute from each end of this circular arc part towards the elongation line portion that the rotating center side of speed-changing drum check plate prolongs with the mode of the inboard of the scope of the track of the pawl motion that do not get into said shifting arm, interior contour portion that elongation line portion is linked; Therefore can not hinder the motion of the pawl of shifting arm, and can realize the raising of intensity.
In addition, because pin stop portion is integrally formed with the prolongation reinforcing part through cylindrical portion, therefore compare with the pin stop portion that only constitutes by cylindrical portion; Section area enlarges, and when carrying out preforming at compressing powder, can pulverous agglomerated material be filled in the mould of pin stop portion fully; And, can reduce the variation of the section area of plate-like portion and pin stop portion, consequently; When compressing powder, can suppress the generation of reduction of the density of the powder in the pin stop portion, therefore can improve the intensity of pin stop portion; And because the density of management powder, guarantee the intensity of the member behind the sintering, the special management operations such as mold management in the time of therefore impact briquetting can being cut down; And; Owing to satisfy density, the intensity of speed-changing drum check plate, so need not append forging process after the sintering generation, can realize the reduction of cost.
In addition, because plate-like portion and pin stop portion are made through the one sintering, therefore can cut down the parts number of packages, realize the reduction of processing number of packages, and saving is pressed into the flow chart of plate-like portion etc. with pin stop portion, thus can cutting down cost.
According to the described speed-changing drum check plate of second aspect; On the basis of the effect of first aspect of the present invention; Can also strengthen plate-like portion through linking annulus, and further strengthen the prolongation reinforcing part of pin stop portion, the intensity of pin stop portion is further improved.
And; Through linking annulus the section area of pin stop portion is further enlarged, when carrying out preforming, can pulverous agglomerated material be filled in the mould of pin stop portion and binding annulus more fully at compressing powder; And can reduce the variation of the section area of plate-like portion and pin stop portion and binding annulus; Thereby can further improve the intensity of pin stop portion, and can cut down the special management operation of the intensity that is used to guarantee the member behind the sintering, can realize cost cutting.
According to a third aspect of the invention we; On the basis of the effect of first aspect of the present invention; Because elongation line portion extends from circular-arc smoothly; Near the formation of joining with pawl shifting arm therefore from cylindrical portion prolongs reinforcing part, thereby can access the pin stop portion that possesses higher intensity.
According to a forth aspect of the invention; On the basis of the effect of second aspect of the present invention; Because elongation line portion extends from circular-arc smoothly; Near the formation of joining with pawl shifting arm therefore from cylindrical portion prolongs reinforcing part, thereby can access the pin stop portion that possesses higher intensity.
According to a fifth aspect of the invention; On the basis of the effect of fourth aspect of the present invention; With bolt when the hole of speed-changing drum check plate is inserted and is fastening, the inner peripheral surface of the binding annulus of speed-changing drum check plate becomes the guide of bolt, thus assembling operation property is improved.
According to a sixth aspect of the invention, on the basis of the effect aspect the of the present invention the 5th, can prevent that the head of bolt from exposing from the speed-changing drum check plate, when other parts of assembling, can prevent to interfere the variation of the fastening force that causes because of bolt head.
According to a seventh aspect of the invention; On the basis of the effect aspect the of the present invention the 5th; Can the speed-changing drum check plate be applicable to the small-sized intermittent feeding mechanism inwardly of that kind that principal arm and shifting arm are overlapping; Also can prevent simultaneously the interference of binding annulus with the principal arm of speed change axle of speed-changing drum check plate, and can prevent relaxing of bolt.
According to an eighth aspect of the invention; Aspect the of the present invention the 6th or on the basis of the effect of the 7th aspect; Because the space that the periphery of bolt need not inserted instrument can form the binding annulus near the bolt outer circumferential face, therefore can when guaranteeing full intensity, realize linking the pathization of annulus; And can make speed-changing drum check plate integral miniaturization, thereby can realize the miniaturization of gear.
Description of drawings
Fig. 1 is the internal-combustion engine of the two-wheeled usefulness that relates to of this mode of execution and the sectional view of gear.
Fig. 2 is its concise and to the point right side view.
Fig. 3 is the enlarged view of the gear of Fig. 1.
Fig. 4 is the enlarged view of reverse shift fork, speed-changing drum and the intermittent feeding mechanism of Fig. 1.
Fig. 5 is the exploded perspective view of intermittent feeding mechanism.
Fig. 6 is the plan view of speed-changing drum check plate.
Fig. 7 is the VII-VII sectional view of Fig. 6.
Fig. 8 is the major component enlarged view of speed-changing drum check plate.
The side view of the feeding process of the intermittent feeding mechanism when Fig. 9 is expression gear gear up.
The side view of the feeding process of the intermittent feeding mechanism when Figure 10 is expression gear gear up.
The side view of the feeding process of the intermittent feeding mechanism when Figure 11 is expression gear gear up.
The side view of the feeding process of the intermittent feeding mechanism when Figure 12 is expression gear gear up.
The side view of the feeding process of the intermittent feeding mechanism when Figure 13 is expression gear gear up.
The side view of the feeding process of the intermittent feeding mechanism when Figure 14 is expression gear gear up.
The side view of the feeding process of the intermittent feeding mechanism when Figure 15 is expression gear gear up.
Figure 16 is the major component enlarged view of the position relation of speed-changing drum check plate and shifting arm when illustrating the gear gear up.
Figure 17 is the major component enlarged view of the position relation of speed-changing drum check plate and shifting arm when illustrating the gear gear down.
Figure 18 is the major component enlarged view of speed-changing drum check plate of scope of movement locus of pawl 55c, the 55d of expression shifting arm 55.
Figure 19 is that expression is to the major component longitudinal sectional view that the speed-changing drum check plate is carried out fill in the preformed powders compression device state of metallic dust.
Figure 20 is the major component longitudinal sectional view of representing the state after the powders compression device compression of Figure 19.
Figure 21 representes to take out from the powders compression device major component longitudinal sectional view of the state of preform.
Figure 22 is the plan view of another embodiment's speed-changing drum check plate.
Figure 23 is the XXIII-XXIII sectional view of Figure 22.
Figure 24 is the major component enlarged view of the position relation of speed-changing drum check plate and shifting arm when illustrating the gear gear up.
Figure 25 is the major component enlarged view of the position relation of speed-changing drum check plate and shifting arm when illustrating the gear gear down.
Figure 26 is the major component enlarged view of speed-changing drum check plate of scope of movement locus of pawl 55c, the 55d of expression shifting arm 55.
Figure 27 is the side view that the speed-changing drum check plate of one embodiment of the invention is applicable to the intermittent feeding mechanism of crab clamp type (nipper-type).
Figure 28 is the side view that the speed-changing drum check plate of another embodiment of the present invention is applicable to the intermittent feeding mechanism of crab clamp type.
Figure 29 is the side view that the speed-changing drum check plate of one embodiment of the invention is applicable to the intermittent feeding mechanism of saw formula (saw-type).
Figure 30 is the side view that the speed-changing drum check plate of another embodiment of the present invention is applicable to the intermittent feeding mechanism of saw formula.
Symbol description:
The E internal-combustion engine
The M gear
The G gear train
50 intermittent feeding mechanisms
51 speed change axles
52 principal arms
55 shifting arms
The 55c pawl
The 55d pawl
60 speed-changing drum check plates
The 60a fillet part
61 plate-like portions
62 pin stop portion
The 62a cylindrical portion
62b prolongs reinforcing part
The 62c circular arc part
The 62d end
The 62e end
62f elongation line portion
62g elongation line portion
Contour portion in the 62h
70 powders compression devices
77 metal powders
78 preforms
80 speed-changing drum check plates
81 plate-like portions
82 pin stop portion
The 82a columnar portion
82b prolongs reinforcing part
83 annulus
The 83a inner peripheral surface
The 83b outer circumferential face
84 bolts hole
85 bolts
The 85a head
The 85b well
90 intermittent feeding mechanisms
91 speed change axles
92 principal arms
95 shifting arms
The 95c pawl
The 95d pawl
100 speed-changing drum check plates
101 plate-like portions
102 pin stop portion
105 speed-changing drum check plates
106 plate-like portions
107 pin stop portion
108 link annulus
110 intermittent feeding mechanisms
111 speed change axles
112 principal arms
115 shifting arms
The 115c pawl
The 115d pawl
120 speed-changing drum check plates
121 plate-like portions
122 pin stop portion
125 speed-changing drum check plates
126 plate-like portions
127 pin stop portion
128 link annulus.
Embodiment
Below, referring to figs. 1 through Figure 21, one embodiment of the invention are described.
Fig. 1 illustrates to possess the gear M that has been suitable for speed-changing drum check plate 60 of the present invention and the major component longitudinal sectional view of internal-combustion engine E.Internal-combustion engine E so that bent axle 9 carry on two-wheeled towards the mode of left and right horizontal direction.
Need to prove, in this manual, as the place ahead, and be that benchmark is confirmed all around with the attitude towards the place ahead with two-wheeled direction of advance.
Internal-combustion engine E is a quartastroke engine; It comprises be formed with along the vertical direction the cylinder barrel 5 that connects and this chimeric in 5 the cylinder block 1 of piston 6 is arranged, on cylinder block 1 overlapping in order and the cylinder head 2 that fastens as one and valve mechanism cover 3, bent axle 9 supportings are separated into the two-part crankcase 4R in the left and right sides, 4L for what can rotate, the crank pin 8 of bent axle 9 links through connecting rod 7 and piston 6.On cylinder head 2, be provided with firing chamber 10, the burning energy in the firing chamber 10 of internal-combustion engine E is converted into the kinetic energy of piston 6 and piston 6 is moved up and down.Through moving up and down of this piston 6, drive bent axle 9 rotations through connecting rod 7.
Bent axle 9, main shaft 13 and jack shaft 14 set with the parallel mode of their axial direction, and through about the last bearing that is provided with 15,16,17 of crankcase 4R, 4L be supported to rotation respectively freely.The rotary driving force of bent axle 9 transmits to main shaft 13 through clutch C that can engaged/disengaged, further transmits to jack shaft 14 through the gear M that possesses gear shift G.
This gear M carries out speed change through the rotation displacement of the speed change axle 51 of under the effect of motor, rotating, and wherein, this motor is by not shown gear shift pedal or not shown ECU control.
As shown in Figure 3; This gear M possesses gear shift G; This gear shift G possesses a plurality of gears by 14 supportings of main shaft 13 and jack shaft, on main shaft 13, begins to be arranged with one grade of actuation gear 21, five grades of actuation gears 25, fourth gear actuation gear 24, third gear actuation gear 23, six grades of actuation gears 26, second gear actuation gear 22 from the right side.One grade of actuation gear 21 forms as one with main shaft 13; Five grades of actuation gears 25 by 13 supportings of main shaft for rotating; Third gear actuation gear 23 and fourth gear actuation gear 24 form as one; And chimeric and through spline by main shaft 13 supporting, for rotating, second gear actuation gear 22 and main shaft 13 are chimeric by 13 supportings of main shaft for six grades of actuation gears 26.
And, on jack shaft 14, begin to be arranged with from the right side one grade by actuation gear 31, five grades by actuation gear 35, fourth gear by actuation gear 34, third gear by actuation gear 33, six grades by actuation gear 36, second gear by actuation gear 32.One grade chimeric by actuation gear 31 and jack shaft 14; Five grades chimeric and by 14 supportings of jack shaft through spline by actuation gear 35; Fourth gear by actuation gear 34 and third gear by actuation gear 33 by 14 supportings of jack shaft for rotating; Six grades are chimeric and by 14 supportings of jack shaft through spline by actuation gear 36, second gear by actuation gear 32 by 14 supportings of jack shaft for rotating.
This gear shift G is normal engagement type change gear mechanism, corresponding actuation gear, is meshed all the time by actuation gear.
And; Like Fig. 1 and shown in Figure 2; Below main shaft 13 and jack shaft 14; Set up supporting reverse shift fork supporting axle 40 and speed-changing drum 44 through left and right sides crankcase 4R, 4L, first reverse shift fork 41, second reverse shift fork 42,43 supportings of the 3rd reverse shift fork that on reverse shift fork supporting axle 40, will be used to change the gear meshing of said gear shift G for slip vertically freely.
First reverse shift fork 41 engages with the groove 35a that is provided with on by actuation gear 35 at five grades; Second reverse shift fork 42 engage with the groove 23a that on integrally formed third gear actuation gear 23 and fourth gear actuation gear 24, is provided with, the 3rd reverse shift fork 43 with six grades by actuation gear 36 on the groove 36a of setting engage.
As shown in Figure 4; The axial direction end of speed-changing drum 44 by about crankcase 4R, 4L supporting be rotation freely; Be formed with three cam paths 45,46,47 on the bulging surface of speed-changing drum 44, the teat 41a of said reverse shift fork 41,42,43,42a, 43a mesh with cam path 45,46,47 respectively.When speed-changing drum 44 rotation predetermined angulars; The teat 41a of reverse shift fork, 42a, 43a are moved axially along speed-changing drum respectively by cam path 45,46,47 guiding respectively; Therefore confirm the position of axial direction of the speed-changing drum 44 of reverse shift fork 41,42,43 through the angle of swing of speed-changing drum 44, thereby it is moved to assigned position.
Through above-mentioned reverse shift fork 41,42,43 axial directions along reverse shift fork supporting axle 40 are moved to assigned position respectively; Thereby make with the chimeric third gear actuation gear 23 of main shaft 13 splines and fourth gear actuation gear 24, or with jack shaft 14 splines chimeric five grades by actuation gear 35 or six grades by actuation gear 36 to the left and right the assigned position of direction move; And, carry out the switching of gear through making the dog-clutch that is provided with in their side and adjacent gear chimeric.
The axis that is provided with speed-changing drum 44 in the end of said speed-changing drum 44 is the intermittent feeding mechanism 50 that the center intermittently rotates speed-changing drum 44; This intermittent feeding mechanism 50 links with said speed change axle 51; When speed change axle 51 rotation predetermined angulars, speed-changing drum 44 intermittently rotates to be predetermined angular.
Based on Fig. 4 to Figure 18, the structure of this intermittent feeding mechanism 5 is described.
Intermittent feeding mechanism 50 possesses: with said speed change axle 51 chimeric and with speed change axle 51 be the principal arm 52 that swing at the center with the axial direction of speed change axle 51 integratedly; Be fixed on the crankcase 4 and limit the banking pin 53 of the pendulum angle of said principal arm 52; To the principal arm 52 of swing to the backspring 54 of the Return-ing direction application of force; Through guide finge 56,57 with principal arm 52 connect to can slide and with the shifting arm 55 of principal arm 52 swing; To the spring 58 of principal arm 52 to the speed change axle 51 side application of forces; Possesses outer circumferential face and is the plate-like portion 61 of camming surface 61a and from the speed-changing drum check plate 60 of these plate-like portion 61 outstanding pin stop portion 62 that form; With this speed-changing drum check plate 60 and said speed-changing drum 44 fastening all-in-one-piece bolts 63; And the speed-changing drum retainer 65 that the camming surface 61a of said speed-changing drum check plate 60 is pushed to the central axis direction of speed-changing drum check plate 60.
As shown in Figure 5; In said principal arm 52; The hole 52a of chimeric speed change axle 51 and the hole 52b, 52c that are respectively applied for chimeric said guide finge 56,57 wear with the mode that the central point in separately hole is configured on the straight line, and are provided with pawl 52f, the 52g to shifting arm 55 side bendings symmetrically across said straight line.In addition, adjacent with the hole 52a of chimeric speed change axle 51 and be formed with slotted hole 52d, in that 52a is formed with to two side-prominent teat 52e of shifting arm 55 across the position of slotted hole 52d from the hole.
The banking pin 53 that is fixed on the crankcase 4 runs through said slotted hole 52d; Owing to be wound on two sides' of the backspring 54 on the speed change axle 51 end 54a and the outside butt of giving prominence to the teat 52e that are provided with from principal arm 52; Therefore when principal arm 52 is swung through speed change axle 51; One side's teat 52e pushes the end 54a of backspring 54 open to the direction of opening backspring 54; And the opposing party's end 54a is by banking pin 53 constrained motions, thereby principal arm 52 is by the direction application of force of the position of backspring 54 before returning swing.And when the angle of oscillation of principal arm 52 increased, the inner peripheral surface of slotted hole 52d and banking pin 53 butts and limit the swing of principal arm 52 avoided principal arm 52 to swing to more than the predetermined angular.
Adjacent with said principal arm 52 and dispose shifting arm 55; Central shaft and be provided with slotted hole 55a, 55b along its length on this shifting arm 55; This slotted hole 55a, 55b and the hole 52b, the pin among the 52c 56,57 that are embedded in said principal arm 52 engage, thereby this slotted hole 55a, 55b can slide on the direction of center line alongst with respect to principal arm 52.In addition, under the effect that is wound on the spring 58 on the pin 56, shifting arm 55 is pushed to speed change axle direction all the time.
On shifting arm 55, be provided with respect to length direction central shaft left and right symmetrically and turn back and to speed-changing drum direction outstanding pawl 55c, 55d, this pawl 55c, 55d follow the swing of principal arm 52 and are that swing at the center with the axis of speed change axle 51.In addition, the side of pawl 55c, 55d forms camming surface 55e, 55f.
As shown in Figure 5, adjacent with said shifting arm 55 and be equipped with speed-changing drum check plate 60, this speed-changing drum check plate 60 fastens as one through bolt 63 and speed-changing drum 44, thereby with by speed-changing drum 44 rotations of crankcase 4 supportings for rotating.
Like Fig. 6 and shown in Figure 7, this speed-changing drum check plate 60 is made up of plate-like portion 61, pin stop portion 62.
The outer circumferential face of plate-like portion 61 forms camming surface 61a, and this camming surface 61a forms and equally spaced is provided with the petal of protuberance 61b and recess 61c.In the present embodiment, protuberance 61b and recess 61c respectively have 6 respectively, and to be adapted to central point 60a with speed-changing drum check plate 60 be that the central angle at center becomes 60 degree respectively.And, be formed with the hole 61d that supplies bolt 63 to connect in the central authorities of plate-like portion 61.
As shown in Figure 6, pin stop portion 62 is a plurality of columnar part, and they are positioned at the substantial middle on the line that the most outstanding part with the central point 60a of speed-changing drum check plate 60 and protuberance 61b links up, and to form from plate-like portion 61 outstanding modes.
Pin stop portion 62 engages with pawl 55c, the 55d of said shifting arm 55, when the gear gear up, follows the rotation of speed change axle 51; Principal arm 52 swings; The shifting arm 55 that engages with principal arm 52 is also swung, and the pawl 55d of shifting arm 55 pushes pin stop portion 62, makes 60 rotations of speed-changing drum check plate; Follow in this speed-changing drum 44 and be rotated; Make reverse shift fork 41,42,43 move to the assigned position of the angle of the rotation of setting speed-changing drum 44 for respectively, thereby gear is moved and mesh the gear of regulation, make gear M gear up.
When gear down, pin stop portion 62 is pushed by the pawl 55c of shifting arm 55, speed-changing drum check plate 60 opposite direction when gear up is rotated, thereby make gear M gear down.
As shown in Figure 8; The shape of this pin stop portion 62 is Cylindrical objects; And the interior all side reinforcing part 62b that are formed with columnar portion 62a and prolong to the rotating shaft center direction of speed-changing drum check plate 60 from columnar portion 62a; The shape of cross section of pin stop portion 62 is so-called horse shoe shaped; It is made up of circular arc part 62c, the 62f of elongation line portion, 62g and the interior 62h of contour portion, and wherein, pawl 55c, the 55d of circular arc part 62c and said shifting arm 55 join; The 62f of elongation line portion, 62g prolong towards the rotating center side of speed-changing drum check plate 60 mode with the inboard of the scope of the track of the pawl 55c that do not get into shifting arm 55,55d motion from each end 62d of this circular arc part 62c, 62e, and the interior contour 62h of portion links up the 62f of elongation line portion, 62g.And the 62f of elongation line portion, 62g tangentially extend from circular arc part 62c smoothly.
In addition; As shown in Figure 7; In the longitudinal section of speed-changing drum check plate 60; The boundary portion of rotating center side in the boundary portion of pin stop portion 62 and plate-like portion 61, speed-changing drum check plate 60 is the interior contour 62h of the portion boundary portion in addition of pin stop portion 62, and vertical sectional shape forms the fillet part 60r of level and smooth round.
The track median claw 55c of the motion of the pawl 55c of the shifting arm 55 of the track median claw 55d of the motion of the pawl 55d of the shifting arm 55 when in Fig. 8, being illustrated in gear M gear up respectively during near the position of the rotating center direction of speed-changing drum check plate 60 and gear M gear down is near the position of the rotating center direction of speed-changing drum check plate 60.
And,, adjacent with said speed-changing drum check plate 60 and dispose speed-changing drum retainer 65 like Fig. 4 and shown in Figure 9.Speed-changing drum retainer 65 possess by the supporting axle 68 that is arranged on the teat 4a supporting on the crankcase 4, by 68 supportings of supporting axle be freely arm 67 of swing, by the front end axle supporting of arm 67 be rotation freely and be pressed in the roller 66 of the cam part 61a of speed-changing drum check plate 60, the teat 4a that is wound on crankcase 4 goes up and pair roller 66 to the backspring 69 of the direction application of force that is pressed in cam part 61a; Follow the rotation of speed-changing drum check plate 60; Roller 66 is pressed in the cam part 61a of speed-changing drum check plate 60, makes speed-changing drum check plate 60 whenever spend intermittently feeding at a distance from 60.
Based on Fig. 9 to Figure 15, below the action of intermittent feeding mechanism 50 when gear M gear up at length is described.
As shown in Figure 9; Speed change axle 51 under the effect of the motor through not shown gear shift pedal or not shown ECU control when the gear up direction is rotated; Follow in this; Principal arm 52 is center and swinging to the top with speed change axle 51; The shifting arm 55 that engages with this principal arm 52 through guide finge 56,57 also begins to the top swing, and the pawl 55d of shifting arm 55 pushes the feeding pin 62 of speed-changing drum check plate 60, makes the counter clockwise direction of speed-changing drum check plate 60 in Fig. 9 with speed-changing drum 44 rotations.
Afterwards; Shown in figure 10, the arm 67 of speed-changing drum retainer 65 pair roller 66 under the effect of backspring 69 but is followed the rotation of speed-changing drum check plate 60 to the direction application of force of the cam part 61a that pushes speed-changing drum check plate 60; Protuberance 61b pushes roller 66 to foreign side, arm 67 is swung laterally.
And shown in figure 11, when 60 rotations of speed-changing drum check plate, roller 66 is crossed protuberance 61b, and arm 67 returns under the effect of backspring 69, and roller 66 is chimeric with recess 61c, thus speed-changing drum check plate 60 rotation predetermined angulars.At this moment, when principal arm 52 swing predetermined angulars, the inwall of the slotted hole 52d of principal arm 52 and banking pin 53 butts, thus restriction principal arm 52 is further swung.
Afterwards; Shown in figure 12, principal arm 52 rotates as the center speed change axle 51 under the effect of backspring 54 with the mode of returning to clockwise direction; Shifting arm 55 is rotation thereupon also, thus feeding pin 62 butts of the camming surface 55f of the pawl 55d of shifting arm 55 and speed-changing drum check plate 60.
And then; Like Figure 13 and shown in Figure 14, the roller 66 of speed-changing drum retainer 65 is chimeric with the recess 61c of speed-changing drum check plate 60, and speed-changing drum check plate 60 is pressed; Therefore; Speed-changing drum check plate 60 can not rotate, shifting arm 55 cross with the pawl 55d of shifting arm 55 pin stop portion 62 mode antagonistic spring 58 active force and to moving, and rotate to clockwise direction with principal arm 52 simultaneously towards the outstanding direction of the opposition side of speed change axle; Thereby shown in figure 15, principal arm 52 turns back to original state with shifting arm 55.Through carrying out this action repeatedly, speed-changing drum check plate 60 intermittently rotates, thus gear M gear up step by step.
The motion of the intermittent feeding mechanism 50 during gear M gear down is not shown; But speed change axle 51 is rotated to clockwise direction; The opposition side swing when gear up of principal arm 52 and shifting arm 55; Through the pawl 55c of shifting arm 55, speed-changing drum check plate 60 is intermittently rotated to clockwise direction, thereby make gear M gear down.
Pin stop portion 62 when the M of gear shown in Figure 16 gear up concerns with the position of the pawl 55d of shifting arm 55.At first, shown in figure 10, when pawl 55d begins with pin stop portion 62 butts; Pawl 55d is positioned at 55d (1); And then when becoming state shown in Figure 11 when speed-changing drum check plate 60 rotation, pawl 55d is positioned at 55d (2), and returns and under the state of the camming surface 55f of pawl 55d and pin stop portion 62 butts at shifting arm 55; Pawl 55d is positioned at 55d (3); And then outwards slide from the central direction of principal arm with respect to speed-changing drum check plate 60 at shifting arm, and pawl 55d crosses under the state of pin stop portion 62, and pawl 55d is positioned at 55d (4).
In addition, the pin stop portion 62 of the speed-changing drum check plate 60 when Figure 17 illustrates gear M gear down concerns with the position of the pawl 55c of shifting arm 55.The pawl 55c of shifting arm 55 moves to 55c (1), 55c (2), 55c (3), 55c (4) in order.
Through above explanation, shown in figure 18, the pawl 55c of shifting arm 55,55d become by the scope shown in the hachure with respect to the scope of the track of speed-changing drum check plate 60 motions.The 62f of elongation line portion, the 62g that extends from the circular arc part 62c of the sectional shape of said pin stop portion 62a forms in the scope that does not get into by the track of pawl 55c shown in the hachure of Figure 18 and 55d motion.
Like this; Pin stop portion 62 forms from the extended prolongation reinforcing part of cylindrical portion 62a 62b; And the sectional shape of this pin stop portion 62 forms horse shoe shaped, that is, its circular arc part 62c by pin stop portion 62, the elongation line 62f of portion, 62g and the interior 62h of contour portion constitute; Wherein, The pawl 55c of circular arc part 62c and shifting arm 55,55d join, and the 62f of elongation line portion, 62g prolong towards the rotating center side of speed-changing drum check plate 60 mode with the inboard of the scope of the track of the pawl 55c that do not get into shifting arm 55,55d motion from each end 62d of circular arc part 62c, 62e, and the interior contour 62h of portion links up the 62f of elongation line portion, 62g; Therefore; Can not hinder the pawl 55c of shifting arm 55, the motion of 55d, and can increase the section area of pin stop portion 62, thereby can form the pin stop portion 62 that the shearing intensity of force that produces with respect to pawl 55c, 55d has increased.
Below, based on Figure 19 to Figure 21, the production method of said speed-changing drum check plate 60 is at length described.
Said speed-changing drum check plate 60 is will be as 77 compressions of the metal powder of powder and behind the preforming through powders compression device 70, and this preform 78 is moved into heating in the oven, sintering and the member made.
Powders compression device 70 possesses punch die 71, is configured in the axle 72 of the central authorities of punch die 71, the chimeric upper punch that is installed in the punch die 71 and can moves along the vertical direction 73, first low punch 74 and second low punch 75.Form the end face of the pin stop portion 62b of speed-changing drum check plate 60 through first low punch 74; Form the plane of pin stop portion side of the plate-like portion 62b of speed-changing drum check plate 60 through second low punch; In addition, form the plane of speed-changing drum 44 sides of plate-like portion 62b through upper punch.First low punch and second low punch are moved to its above-below direction by independent control respectively, and may be moved into the compression ratio that obtains the best for forming plate-like portion 61 and pin stop portion 62.
Shown in figure 19, on the punch die 71 of powders compression device 70, settle axle 72, first low punch 74, second low punch 75, in this punch die 71, fill metallic dust 77.In the present embodiment; The distance of upper surface of upper surface and second low punch 75 of length and first low punch of roughly twice that with the distance of the upper surface of the upper surface of first low punch 74 and punch die 71 is the thickness of plate-like portion 61 is the mode of length of roughly twice of the height of pin portion 62; First low punch 74 and second low punch 75 are placed on the punch die 71, so that the volume of the metallic dust 77 of filling becomes the volume of roughly twice of the volume of the speed-changing drum check plate 60 behind the sintering.
As the metal powder 77, for example, with full of strength, hardness, toughness of iron or iron-based alloy metal powder as a main component and mixed with nickel, manganese, powder to obtain a powder.
Afterwards; Shown in figure 20, upper punch 73, punch die 71 and first low punch are moved downwards, make first low punch drop to slide block 76 butts till; Metal powder 77 is by the compression ratio compression with regulation; In the present embodiment, boil down to 1/2nd, thus obtain the preform 78 that forms by metal powder 77 of speed-changing drum check plate 60.
And; Shown in figure 21, upper punch 73 is moved to the top, and first low punch 74 and punch die 71 are moved downwards integratedly; Axle 72 is moved to downwards with till the upper surface of punch die 71 becomes identical height, preform 78 is taken out from powders compression device 70.
The preform 78 of the speed-changing drum check plate 60 of this compression forming is moved in the warmed-up sintering furnace; And carry out sintering, thereby obtain the speed-changing drum check plate 60 of the desired shape that plate-like portion 61 and pin stop portion 62 form as one through carrying out stipulated time heating.
In the speed-changing drum check plate 60 of present embodiment; Because the prolongation reinforcing part 62b that pin stop portion 62 is formed with cylindrical portion 62a and extends from this cylindrical portion 62a; Therefore compare with forming columned existing pin stop portion, section area enlarges, and the intensity of pin stop portion 62 improves.
In addition; Because the shape of cross section of pin stop portion 62 forms horse shoe shaped, that is, its circular arc part 62c by pin stop portion 62, the elongation line 62f of portion, 62g and the interior 62h of contour portion constitute; Wherein, The pawl 55c of circular arc part 62c and shifting arm 55,55d join, and the 62f of elongation line portion, 62g prolong towards the rotating center side of speed-changing drum check plate 60 mode with the inboard of the scope of the track of the pawl 55c that do not get into shifting arm 55,55d motion from each end 62d of circular arc part 62c, 62e, and the interior contour 62h of portion links up the 62f of elongation line portion, 62g; Therefore; Can not hinder the pawl 55c of shifting arm 55, the motion of 55d, and can increase the section area of pin stop portion 62, thereby can form the pin stop portion 62 that the shearing intensity of force that produces with respect to pawl 55c, 55d has increased.
In addition; The speed-changing drum check plate 60 of present embodiment through with plate-like portion 61 and pin stop portion 62 integratedly sintering make; Therefore need the feeding pin be pressed into plate-like portion, can realize parts number of packages and the reduction of processing number of packages and the mitigation of machining accuracy, thereby can realize the reduction of cost.
In addition, in the speed-changing drum check plate 60 of present embodiment, pin stop portion 62 forms the prolongation reinforcing part 62b that extends from cylindrical portion 62a; Therefore compare with forming columned existing pin stop portion, section area broadens, and the 62f of elongation line portion, 62g tangentially extend from circular arc part 62c smoothly; Therefore the inside that spreads all over to metal powder 77 easy and uniform the mould that forms pin stop portion 62, metal powder 77 when being compressed, being evenly distributed of the density of press-powder body; Can suppress the generation of the reduction of the powder density in the pin stop portion 62, therefore can improve the intensity of pin stop portion 62, and; Because the density of management metal powder 77, guarantee the intensity of the member behind the sintering, the special management operations such as mold management in the time of therefore impact briquetting can being cut down; And; Owing to satisfy density, the intensity of speed-changing drum check plate 60, so need not append forging process after the sintering generation, thereby can realize the reduction of cost.
And; In the longitudinal section of the speed-changing drum check plate 60 of present embodiment; The boundary portion of rotating center side in the boundary portion of pin stop portion 62 and plate-like portion 61, that be positioned at speed-changing drum check plate 60 is the scope boundary portion in addition of the 62h of contour portion of pin stop portion 62; Vertical sectional shape forms the fillet part 60r of level and smooth round, so the intensity of the root of pin stop portion 62 improves, and metal powder 77 is carried out compression forming and the variation of the area of the cross section of plate-like portion 61 during preforming and pin stop portion 62 reduces; Thereby the reduction of the density of metal powder reduces, and can realize the raising of the intensity of pin stop portion 62.
In addition; Through independently controlling first low punch 74 and second low punch 75 respectively; Thereby plate-like portion 61 and pin stop portion 62 are compressed with the compression ratio of the best respectively, therefore can make the density of the press-powder body of pin stop portion 62 become the best, can realize the raising of the intensity of pin stop portion 62.
Because the mould of the pin stop portion 62 during compression forming is made up of first low punch 74 and second low punch 75; Therefore can metal powder 77 be spreaded all over fully and is filled in the mould of pin stop portion 62; Thereby can improve the density of metal powder of the pin stop portion 62 of preform 78, can make the speed-changing drum check plate 60 that possesses the high pin stop portion of intensity 62.
In the above embodiments, be suitable for said speed-changing drum check plate 60, but also can as Figure 22 and shown in Figure 23, be suitable for and possess the speed-changing drum check plate 80 that links the binding annulus 83 that prolongs reinforcing part 82b.
This speed-changing drum check plate 80 is identical with pin stop portion 62 with the plate-like portion 61 of the speed-changing drum check plate 60 of the foregoing description, has: the plate-like portion 81 that has the camming surface 81a that joins with speed-changing drum retainer 65 around; Whole week of plate-like portion 81 upwards every at a distance from predetermined distance from a side of plate-like portion 81 the outstanding a plurality of pin stop portion 82 that are provided with and engage with fixedly pawl 55c, the 55d of the shifting arm 55 of the principal arm 52 of speed change axle 51; Wherein, This pin stop portion 82 is a column; And the prolongation reinforcing part 82b that is formed with cylindrical portion 82a and prolongs towards the rotating center side of speed-changing drum check plate 80 from this cylindrical portion 62a; The shape of cross section of this pin stop portion 82 is a horse shoe shaped; That is, it is made up of circular arc part 82c, the 82f of elongation line portion, 82g and the interior 82h of contour portion, wherein; The pawl 55c of circular arc part 82c and said shifting arm 55,55d butt; The 82f of elongation line portion, 82g prolong towards the rotating center side of speed-changing drum check plate 80 mode with the inboard of the scope of the track of the pawl 55c that do not get into said shifting arm 55,55d motion from each end 82d of this circular arc part 82c, 82e, and the interior contour 82h of portion links up the 82f of elongation line portion, 82g, and; The running shaft that forms with speed-changing drum check plate 80 with the mode of the prolongation reinforcing part 82b that links pin stop portion 82 is the binding annulus 83 of the ring-type at center, and this bindings annulus 83 forms the identical height of giving prominence to from plate-like portion 81 with pin stop portion 82 of height from plate-like portion 81 outstanding height.
Shown in figure 23, this binding annulus 83 links the prolongation reinforcing part in the position of the motion that does not hinder the pawl 55c of shifting arm 55,55d.The speed-changing drum check plate 80 of the present embodiment when the gear up of gear shown in Figure 24 concerns that with the position of shifting arm 55 the speed-changing drum check plate 80 of the present embodiment when the gear down of gear shown in Figure 25 concerns with the position of shifting arm 55.Therefore shown in figure 26, the pawl 55c of shifting arm 55,55d are by the scope shown in the hachure with respect to the scope of the movement locus of speed-changing drum check plate 80.
And the speed-changing drum check plate 80 of present embodiment is formed with the rotating center that is positioned at speed-changing drum check plate 80 and supplies the bolt hole 84 of bolt perforation.Bolt runs through said bolt hole 84 and is fastened onto speed-changing drum 44, can use the bolt 63 that in embodiment 1, uses, but also can use the concave head bolt 85 that is provided with well 85b at head 85a.
Said binding annulus 83 forms the height roughly the same with the height of head of said bolt 85 from plate-like portion 81 outstanding height.
In the speed-changing drum check plate 80 of present embodiment; Because the mode that links with the prolongation reinforcing part 82b with pin stop portion 82 is provided with binding annulus 83; Therefore can strengthen plate-like portion 81 through linking annulus 83; And further strengthen the prolongation reinforcing part 82b of pin stop portion 82, thereby the intensity of pin stop portion 82 is further improved.
And; Through linking annulus 83 section area of pin stop portion 82 is further enlarged; When powders compression is carried out preforming; Can pulverous agglomerated material be filled in the mould of pin stop portion 82 and binding annulus 83 more fully, and can reduce the variation of the section area of plate-like portion 81 and pin stop portion 82 and binding annulus 83, therefore can further improve the intensity of pin stop portion 82.
In addition; Because the 82f of elongation line portion, 82g extend from circular-arc 82c of pin stop portion 82 smoothly; Near the formation of joining with pawl 55c, 55d shifting arm 55 therefore from cylindrical portion 82a prolongs reinforcing part 82b, thereby can access the pin stop portion 82 that possesses higher intensity.
And; Because the inboard at the inner peripheral surface 83a that links annulus 83 is provided with the bolt hole 84 that is used for construction bolt 85; Therefore with bolt 85 when the bolt hole 84 of speed-changing drum check plate 80 inserts and is fastening; The inner peripheral surface 83a that links annulus 83 becomes the guide of bolt, thereby assembling operation property is improved.
In addition; Because the height of the height of binding annulus 83 and the head 85a of bolt 85 about equally; Therefore can prevent that the head 85a of bolt 85 from exposing from speed-changing drum check plate 80, when other parts of assembling, can prevent to interfere the variation of the fastening force that causes because of bolt head 85a.
And; As the bolt that speed-changing drum check plate 80 is anchored on speed-changing drum 44, use the concave head bolt 85 that is provided with well 85b at head 85a, therefore in space that the periphery of bolt 85 need not inserted instrument; Can near the outer circumferential face of bolt 85, formation link annulus 83; Therefore can when guaranteeing enough intensity, realize linking the pathization of annulus 83, make speed-changing drum check plate 80 integral miniaturization, thereby can realize the miniaturization of gear M.
In addition, also can make this binding annulus 83 high from the height of the head 85a of the outstanding said bolt 85 of aspect ratio of plate-like portion 81.Like this, can speed-changing drum check plate 80 be applicable to small-sized intermittent feeding mechanism 50 inwardly, also can prevent the interference of binding annulus 83 with the principal arm 52 of speed change axle 51 of speed-changing drum check plate 80 simultaneously, and can prevent the lax of bolt 85.
In the above embodiments; Speed-changing drum check plate 60,80 is applicable to set the pawl 55c of shifting arm 55, the small-sized intermittent feeding mechanism 50 of 55d inwardly with principal arm 52 overlapping modes; Promptly be applicable to the intermittent feeding mechanism 50 of so-called small-sized crab clamp type, but also can be applicable to the intermittent feeding mechanism 90 of the so-called crab clamp type of that kind shown in Figure 27.The intermittent feeding mechanism 90 of this crab clamp type possesses speed change axle 91, principal arm 92, banking pin 93, backspring 94, shifting arm 95, guide finge 96,97, and the pawl 95c of shifting arm 95,95d be not to set with principal arm 92 overlapping modes outwardly.
The intermittent feeding mechanism 90 of this crab clamp type uses speed-changing drum check plate 100, and this speed-changing drum check plate 100 possesses plate-like portion 101 and pin stop portion 102, and pin stop portion 102 is suitable for the pin stop portion 62 of the speed-changing drum check plate 60 of the foregoing description.
And; Shown in figure 28; The intermittent feeding mechanism 90 of this small-sized crab clamp type can use speed-changing drum check plate 105, this speed-changing drum check plate 105 possesses plate-like portion 106, be suitable for the foregoing description speed-changing drum check plate 80 pin stop portion 82 pin stop portion 107, link the binding annulus 108 of binding annulus 83 of the speed-changing drum check plate 80 of annulus 108 or suitable the foregoing description.
And, in the intermittent feeding mechanism 110 of the so-called saw formula of that kind shown in Figure 29, also can be suitable for the speed-changing drum check plate 60,80 of the foregoing description.The intermittent feeding mechanism 110 of this saw formula possesses speed change axle 111, principal arm 112, banking pin 113, backspring 114, shifting arm 115, guide finge 116, spring 117; Principal arm 112 links through pin 116 with shifting arm 115, and the end of shifting arm 115 through spring 117 and principal arm 112 links and by the application of force.
Intermittent feeding mechanism 110 of this saw formula uses speed-changing drum check plates 120, and this speed-changing drum check plate 120 possesses plate-like portion 121 and has been suitable for the pin stop portion 122 of pin stop portion 62 of the speed-changing drum check plate 60 of the foregoing description.
And; Shown in figure 30; The intermittent feeding mechanism 110 of this saw formula can also use speed-changing drum check plate 125, this speed-changing drum check plate 125 possesses plate-like portion 126, be suitable for the foregoing description speed-changing drum check plate 80 pin stop portion 82 pin stop portion 127, link annulus 128 or be suitable for the binding annulus 128 of binding annulus 83 of the speed-changing drum check plate 80 of the foregoing description.

Claims (8)

1. a speed-changing drum check plate (60), it constitutes gear (M), it is characterized in that, has plate-like portion (61) and a plurality of pin stop portion (62),
Said plate-like portion (61) has the camming surface (61a) that joins with speed-changing drum retainer (65) around,
Said a plurality of pin stop portion (62) upwards whenever was provided with from a side of this plate-like portion (61) is outstanding at a distance from predetermined distance in whole week of this plate-like portion (61), and engaged with the fixing pawl (55c, 55d) of the shifting arm (55) of the principal arm (52) of speed change axle (51),
This pin stop portion (62) is a column, and the prolongation reinforcing part (62b) that is formed with cylindrical portion (62a) and prolongs towards the rotating center side of speed-changing drum check plate (60) from this cylindrical portion (62a),
The shape of cross section of this pin stop portion (62) is by circular arc part (62c); (the 62f of elongation line portion; The horse shoe shaped that 62g) constitutes with interior contour portion (62h); Pawl (the 55c of circular arc part (62c) and said shifting arm (55) wherein; 55d) butt; (the 62f of elongation line portion; 62g) from each end (62d of this circular arc part (62c); 62e) towards the rotating center side of speed-changing drum check plate (60) not get into the pawl (55c of said shifting arm (55); 55d) mode of the inboard of the scope of the track of motion prolongs; Interior contour portion (62h) is with (the 62f of this elongation line portion; End 62g) links up
Said plate-like portion (61) and said pin stop portion (62) be through compressing powder and behind the one preforming, carries out sintering and make.
2. speed-changing drum check plate according to claim 1 (80) is characterized in that,
Said speed-changing drum check plate possesses the binding annulus (83) that the prolongation reinforcing part (82b) with pin stop portion (82) links up.
3. speed-changing drum check plate according to claim 1 (60) is characterized in that,
Elongation line portion in the sectional shape of said pin stop portion (62) (62f, 62g) tangentially extends from circular arc part (62c) smoothly.
4. speed-changing drum check plate according to claim 2 (80) is characterized in that,
Elongation line portion in the sectional shape of said pin stop portion (82) (82f, 82g) tangentially extends from circular arc part (82c) smoothly.
5. according to claim 2 or 4 described speed-changing drum check plates (80), it is characterized in that,
Be provided with the bolt hole (84) that the bolt (85) that supplies to be used to install said speed-changing drum check plate connects in the inboard of the inner peripheral surface (83a) of said binding annulus (83), the guide of the said bolt of said binding annulus (83) double as (85).
6. speed-changing drum check plate according to claim 5 (80) is characterized in that,
The height of the head (85a) of the height of said binding annulus (83) and said bolt (85) about equally.
7. speed-changing drum check plate according to claim 5 (80) is characterized in that,
Said speed-changing drum check plate (80) is used for to set the gear (M) of shifting arm (55) inwardly with the overlapping mode of said principal arm (52), and the height of the head (85a) of the said bolt of aspect ratio (85) of said binding annulus (83) is high.
8. according to claim 6 or 7 described speed-changing drum check plates (80), it is characterized in that,
Said bolt (85) is made up of the concave head bolt (85) that is provided with well (85b) at bolt head (85a).
CN201210026209.6A 2011-03-02 2012-02-07 Shift drum stop plate Expired - Fee Related CN102654195B (en)

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