CN111503261A - Speed-changing transmission mechanism of bidirectional automatic speed-changing device - Google Patents
Speed-changing transmission mechanism of bidirectional automatic speed-changing device Download PDFInfo
- Publication number
- CN111503261A CN111503261A CN202010500412.7A CN202010500412A CN111503261A CN 111503261 A CN111503261 A CN 111503261A CN 202010500412 A CN202010500412 A CN 202010500412A CN 111503261 A CN111503261 A CN 111503261A
- Authority
- CN
- China
- Prior art keywords
- piece
- friction
- transmission mechanism
- bidirectional automatic
- speed change
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 230000005540 biological transmission Effects 0.000 title claims abstract description 97
- 230000002457 bidirectional effect Effects 0.000 title claims abstract description 46
- 230000007246 mechanism Effects 0.000 title claims abstract description 45
- 230000008859 change Effects 0.000 claims abstract description 44
- 230000009471 action Effects 0.000 claims abstract description 31
- 238000005452 bending Methods 0.000 claims abstract description 9
- 239000002184 metal Substances 0.000 claims abstract description 8
- 230000008878 coupling Effects 0.000 claims description 16
- 238000010168 coupling process Methods 0.000 claims description 16
- 238000005859 coupling reaction Methods 0.000 claims description 16
- 230000002093 peripheral effect Effects 0.000 claims description 11
- 229910000639 Spring steel Inorganic materials 0.000 claims description 4
- 238000000465 moulding Methods 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 abstract description 12
- 210000000078 claw Anatomy 0.000 description 5
- 229910000831 Steel Inorganic materials 0.000 description 4
- 239000010959 steel Substances 0.000 description 4
- 239000000463 material Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000013459 approach Methods 0.000 description 2
- 230000013011 mating Effects 0.000 description 2
- 238000004080 punching Methods 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 239000004677 Nylon Substances 0.000 description 1
- 238000007792 addition Methods 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
- F16H61/26—Generation or transmission of movements for final actuating mechanisms
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/0018—Shaft assemblies for gearings
- F16H57/0025—Shaft assemblies for gearings with gearing elements rigidly connected to a shaft, e.g. securing gears or pulleys by specially adapted splines, keys or methods
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Mechanical Operated Clutches (AREA)
Abstract
The invention provides a speed change transmission mechanism of a bidirectional automatic speed change device, and belongs to the technical field of transmissions. It has solved the current problem that variable speed drive mechanism is with high costs. The speed change transmission mechanism of the bidirectional automatic speed change device comprises a main shaft, an input piece axially fixed outside the main shaft and a combining piece sleeved on the main shaft and in threaded connection with the input piece, wherein a friction piece capable of forming rotation resistance to the friction piece is arranged on the outer side of the combining piece, the friction piece is made of strip-shaped metal sheets, an elastic action part and a matching part formed after bending are arranged on the friction piece, the friction piece can form circumferential fixation with a shell of the bidirectional automatic speed change device through the matching part, the elastic action part is abutted against the outer wall of the combining piece, and the elastic force of the elastic action part acts on the combining piece inwards. The speed change transmission mechanism of the bidirectional automatic speed change device has the advantages of low manufacturing cost, strong wear resistance and the like.
Description
Technical Field
The invention belongs to the technical field of transmissions, relates to a bidirectional automatic speed change device, and particularly relates to a speed change transmission mechanism of the bidirectional automatic speed change device.
Background
The traditional bidirectional automatic speed-changing motor realizes the forward or backward movement of the electro-tricycle through the matching of the one-way chuck, the forward one-way device and the backward one-way device, but the structure has the problems of incompact structure, scattered distribution of parts, excessive occupied space and the like. To this end, the applicant has developed an improvement to the conventional structure and proposed a bidirectional automatic transmission motor transmission of patent application No. 201610662924.7, which is advantageous in that the space occupied by the entire transmission is reduced to make the entire structure simpler, but it has a relatively high requirement for the fit between the parts, especially when switching between forward and reverse, which is liable to cause a failure in the switching due to the lack of fit.
In order to solve the above problems, the applicant has changed the prior art and proposed a reverse transmission mechanism of a bidirectional automatic transmission device with patent application number 201911101268.3, which comprises a main shaft, a transmission member sleeved on the main shaft and capable of forming a linkage relation with the main shaft, and an input member axially fixed on the main shaft, wherein a clutch structure capable of circumferentially linking or disengaging the transmission member and the input member is arranged between the transmission member and the input member, a connector is sleeved on the main shaft, and the clutch structure can switch between circumferential linkage and disengagement of the transmission member and the input member when the connector moves up and down, the connector is in threaded connection with the input member, an arc-shaped groove is arranged on the inner circumferential surface of the input member, a raised head is arranged on the outer side of the connector, and the raised head. When the vehicle is switched from forward to reverse, the input part receives power and rotates reversely relative to the transmission part, the input part is in threaded connection with the connecting part, and the raised head on the outer side of the connecting part is positioned in the arc-shaped groove of the input part, so that the input part can rotate relative to the connecting part through the matching of the arc-shaped groove and the raised head, the connecting part is driven to move upwards along the thread, the clutch structure is switched to the transmission part to be linked with the input part along the circumferential direction, the transmission part also starts to rotate reversely, and the main shaft is driven to rotate reversely to realize the reverse.
The convex head and the arc-shaped groove move relatively in the process of switching from forward to reverse, and because the input piece is in threaded connection with the joint piece, the rotating resistance needs to be applied to the outer side of the joint piece to ensure that the joint piece can move upwards smoothly. Therefore, the reverse drive mechanism of the bidirectional automatic speed changing device is sleeved with a positioning ring at the outer side of the combining part, the positioning ring and the shell of the bidirectional automatic speed changing device form circumferential fixation, meanwhile, a friction structure consisting of a spring and a steel ball is arranged between the positioning ring and the combining part, and the steel ball is propped against the combining part to form rotational resistance so as to ensure that the combining part can smoothly move upwards. However, the combined structure of the retaining ring, the steel ball and the spring causes the production cost to become relatively high. One approach that is conventional to those skilled in the art for this is to use less expensive materials to fabricate the retaining ring.
Disclosure of Invention
The invention aims to solve the problems in the prior art, provides a speed change transmission mechanism of a bidirectional automatic speed change device, and solves the technical problem of high cost.
The purpose of the invention can be realized by the following technical scheme:
the variable speed transmission mechanism of the bidirectional automatic speed changing device comprises a main shaft, an input piece axially fixed outside the main shaft and a combining piece sleeved on the main shaft and in threaded connection with the input piece, wherein a friction piece capable of forming rotation resistance to the friction piece is arranged on the outer side of the combining piece.
When the input piece rotates reversely to reverse, the connecting piece is connected with the input piece through threads and the connecting piece is subjected to the rotating resistance exerted by the friction piece, and the friction piece and the shell of the bidirectional automatic speed changing device form circumferential fixation through the matching part, so that the connecting piece can move along the threads to control the main shaft to be linked with the input piece along the circumferential direction, and the reverse is further realized.
In the variable speed transmission mechanism, the friction piece is formed by bending a long metal sheet, the elastic action part and the matching part are both directly formed when the long metal sheet is bent to form the friction piece, and when the friction piece is placed on the outer side of the combining piece, the elastic action part directly abuts against the outer wall of the combining piece to form the rotating resistance of the combining piece. Compared with the positioning ring in the prior art which is a metal block with thicker thickness, the friction piece in the scheme greatly reduces the application of raw materials while forming effective rotation resistance on the combined piece, thereby greatly reducing the manufacturing cost. Furthermore, metal materials are more resistant to wear than conventional elastomeric materials such as plastics, nylon, and the like.
In the above-mentioned speed change transmission mechanism of the bidirectional automatic transmission, the friction member is in a ring shape having a mouth, and the elastic action portion is located near the mouth.
The elastic action part is arranged at the mouth part of the body, the friction piece is not easy to separate from the combining piece, and the stability of the friction piece and the combining piece in matching is ensured while the manufacturing cost is reduced.
In the above-described speed change transmission mechanism of the bidirectional automatic transmission, the friction member has a protruding piece at one end thereof, the protruding piece being folded outward, and the elastic operation portion is an inner side wall of the friction member at the end thereof.
One end of the friction piece is turned outwards to form a convex piece, so that the end part of the friction piece naturally generates inward elastic force, and when the friction piece is sleeved outside the joint piece, the inner side wall of the end part of the friction piece is used as an elastic action part to apply inward elastic force to form rotation resistance on the joint piece.
In the speed change transmission mechanism of the bidirectional automatic speed change device, the elastic action part is a first sheet body, the outer peripheral surface of the combining part is a cylindrical surface, and the first sheet body is tangent to the outer peripheral surface of the combining part.
The first sheet body is tangent to the outer peripheral surface of the combining piece, namely the first sheet body and the outer peripheral surface of the combining piece form line contact, so that the formation of rotation resistance is met, and the speed change switching sensitivity caused by overlarge rotation resistance can be avoided.
In the speed change transmission mechanism of the bidirectional automatic speed change device, the friction piece is also provided with a second sheet body tangent to the outer peripheral surface of the combining piece, and the lug and the second sheet body are respectively fixedly connected to two ends of the first sheet body.
The second sheet body is tangent to the peripheral surface of the combining part, line contact is formed between the second sheet body and the combining part, and the first sheet body is combined with the combining part to form line contact, so that the friction part can not shift, the manufacturing cost is reduced, and the reliability is ensured.
In the speed change transmission mechanism of the bidirectional automatic speed change device, two end parts of the friction piece are turned outwards to form protruding pieces, and an adjusting piece capable of adjusting the distance is arranged between the two protruding pieces.
The distance between the two convex pieces is adjusted through the adjusting piece, so that the elasticity of the elastic action part can be adjusted, the influence on the normal action of the combining piece due to the overlarge or undersize elasticity is avoided, and the reliability is ensured while the manufacturing cost is reduced. Conventionally, the elastic force of the spring is adjusted by tightening or loosening a screw.
In the above-mentioned speed change transmission mechanism of the bidirectional automatic transmission, the engaging portion has a bent U-shaped structure, and a notch of the engaging portion faces outward.
When the speed change transmission mechanism of the bidirectional automatic speed change device is fixed in the shell, the limiting part fixed in the shell can be directly clamped into the matching part, so that the friction piece and the shell are circumferentially fixed, and the friction piece can stably apply rotation resistance on the combining piece. The mating portion is also formed directly from the strip of sheet metal when bent into a friction member, thereby further reducing manufacturing costs.
In the above-mentioned speed change transmission mechanism of the bidirectional automatic transmission, as another technical solution, the friction member is of a quincunx shape, the elastic action portion is a portion of the friction member protruding inward, and the mating portion is one of the concave portions of the friction member.
In the speed change transmission mechanism of the bidirectional automatic speed change device, the friction piece is made of spring steel and is formed by punching.
The spring steel makes the friction piece have elasticity, adopts punching press mode shaping friction piece can improve production efficiency when reducing manufacturing cost.
In the speed change transmission mechanism of the bidirectional automatic speed change device, the combining piece is cylindrical, one end of the combining piece is positioned outside the input piece and is provided with an annular abutting surface, the combining piece is provided with a gasket and a limiting clamp spring capable of preventing the gasket from being separated, and the friction piece is fixed between the annular abutting surface and the gasket along the axial direction of the combining piece.
Compared with the prior art, the speed change transmission mechanism of the bidirectional automatic speed change device has the following advantages:
1. the friction piece is formed by bending a long metal sheet, and a matching part and an elastic action part are naturally formed after bending, so that effective rotation resistance is formed on the combined piece, and simultaneously, the application of raw materials is greatly reduced, and the manufacturing cost is greatly reduced;
2. the first sheet body and the second sheet body are in line contact with the combining part, so that the rotating resistance is formed, the insensitive speed change switching can be avoided, and the stable matching of the friction part and the combining part can be ensured to ensure the reliability;
3. through the arrangement of the adjusting piece, the rotation resistance can be adjusted to ensure the optimal state.
Drawings
Fig. 1 is a schematic diagram of a first embodiment of a speed change transmission mechanism of the present bidirectional automatic transmission.
Fig. 2 is a sectional view of a first embodiment of the speed change transmission mechanism of the present bidirectional automatic transmission.
FIG. 3 is a cross-sectional view of a friction member and a push sleeve of a first embodiment of a shift transmission mechanism of the automatic two-way transmission.
FIG. 4 is a schematic view of a friction member in the first embodiment of the speed change transmission mechanism of the present automatic two-way speed change device.
Fig. 5A is a schematic bottom view of the push sleeve and the input member.
Fig. 5B is an exploded view of the push sleeve and the input member.
FIG. 6 is a schematic view of the input member, transmission member and clutch mechanism.
Fig. 7 is a schematic view between the input member and the coupling plate.
In the figure, 1, main shaft; 2. a transmission member; 2a, a first combining section; 2b, a second combining section; 2c, a yield section; 2d, connecting holes; 3. an input member; 3a, an arc-shaped groove; 4. a binder; 4a, a combination sleeve; 4a1, pin; 4b, a pushing sleeve; 4b1, nose; 4b2, annular abutment surface; 5. a friction member; 5a, an elastic action part; 5b, a matching part; 5c, a first sheet body; 5d, a lug; 5d1, vias; 5e, a second sheet body; 6. an adjustment member; 7. a gasket; 8. a limiting clamp spring; 9. a coupling disc; 9a, a connecting hole; 10. a roller; 11. a magnet; 12. a buffer; 13. an output gear; 14. a driven gear; 15. a connecting frame; 16. a transmission support; 17. a coupling claw; 18. a coupling sleeve; 19. and (4) centering the blocks.
Detailed Description
The following are specific embodiments of the present invention and are further described with reference to the drawings, but the present invention is not limited to these embodiments.
Example one
As shown in fig. 1 and 2, the speed change transmission mechanism of the bidirectional automatic speed change device includes a main shaft 1, a transmission member 2 sleeved on the main shaft 1 and capable of forming a linkage relation with the main shaft 1, and an input member 3 axially fixed on the main shaft 1, a clutch structure capable of making the transmission member 2 and the input member 3 linkage or release along a circumferential direction is provided between the transmission member 2 and the input member 3, a connection member 4 is sleeved on the main shaft 1, the connection member 4 is in threaded connection with the input member 3, a friction member 5 capable of forming a rotation resistance to the connection member 4 is provided on an outer side of the connection member 4, and when the connection member 4 moves along the main shaft 1, the clutch structure can be switched between the transmission member 2 and the.
Fig. 2, 5A, 5B, 6 and 7 show that in this embodiment, the transmission member 2 and the input member 3 are both ring-shaped, the clutch structure includes a coupling disc 9 disposed inside the input member 3 and a plurality of rollers 10 positioned on the coupling disc 9, the coupling disc 9 is attracted to the top wall of the inner side of the input member 3 through a magnet 11, a plurality of abdicating grooves are circumferentially disposed on the outer side of the transmission member 2, each roller 10 is located in the corresponding abdicating groove, and the coupling disc 9 can drive each roller 10 to move along the corresponding abdicating groove, and the groove wall of each abdicating groove facing the input member 3 includes a first combination section 2a, a second combination section 2B and an abdicating section 2c connected between the first combination section 2a and the second combination section 2B. One end face of the transmission part 2 is provided with a plurality of arc-shaped connecting holes 2d, the combining part 4 comprises a combining sleeve 4a sleeved outside the spindle 1 and a pushing sleeve 4b sleeved outside the combining sleeve 4a, the pushing sleeve 4b can rotate relative to the combining sleeve 4a, the pushing sleeve 4b and the combining sleeve 4a are fixed along the axial direction, and the friction part 5 is arranged outside the pushing sleeve 4 b. The coupling plate 9 is provided with a plurality of coupling holes 9a, one end surface of the coupling sleeve 4a is provided with a plurality of pins 4a1, and each pin 4a1 passes through the corresponding coupling hole 9a and is inserted into the connecting hole 2 d. One end of the pushing sleeve 4b is screwed in the input member 3, the inner peripheral surface of the input member 3 is provided with an arc-shaped groove 3a, and the side of the pushing sleeve 4b is provided with a convex head 4b1 which is positioned in the arc-shaped groove 3a and can move along the same. The other end of the pushing sleeve 4b extends out of the input part 3, the combination sleeve 4a is provided with a limiting clamp spring 8 and a gasket 7, the part of the pushing sleeve 4b extending out of the input part 3 is provided with an annular abutting surface 4b2, and the friction part 5 is axially fixed between the gasket 7 and the annular abutting surface 4b2 through the limiting clamp spring 8.
When the roller 10 is positioned at the first combining section 2a, the inner walls of the first combining section 2a and the input member 3 are abutted against the outer wall of the roller 10, so that the input member 3 and the transmission member 2 are circumferentially connected through the roller 10; when the roller 10 is positioned at the position-giving section 2c, the vertical distance from the position-giving section 2c to the inner wall of the input member 3 is larger than the outer diameter of the roller 10, and the input member 3 is separated from the transmission member 2; when the roller 10 is located at the second combining section 2b, the second combining section 2b and the inner wall of the input member 3 are both abutted against the outer wall of the roller 10, and the input member 3 and the transmission member 2 are circumferentially connected through the roller 10. With regard to the specific structure and operation principle of the clutch structure and the matching relationship between the engaging member 44 and the clutch structure, reference may be made to a transmission mechanism of a bidirectional automatic transmission disclosed in application No. 201811552712.9.
As shown in fig. 1 and 4, the friction member 5 is formed by bending a strip-shaped metal sheet, specifically, a spring steel material. The bidirectional automatic speed changing device comprises a shell, a matching part 5b formed after bending is arranged on the friction piece 5, the matching part 5b is a U-shaped structure formed by bending, a notch of the matching part 5b faces outwards, a limiting piece is fixed in the shell of the bidirectional automatic speed changing device, and the limiting piece is clamped in the matching part 5 b. The limiting member may be a limiting pin or a limiting screw or a limiting block fixed in the housing of the bidirectional automatic transmission. The friction piece 5 is also provided with an elastic action part 5a formed after bending, the elastic action part 5a is abutted against the outer wall of the pushing sleeve 4b, and the elastic force of the elastic action part 5a inwards acts on the pushing sleeve 4 b.
Further, as shown in fig. 1, 4 and 5, the friction member 5 has a ring shape having a mouth portion where the elastic action portion 5a is located, and the mouth portion of the friction member 5 is caught on the outer wall of the push sleeve 4 b. The friction member 5 has a tab 5d formed by being turned outward at one end thereof, and the elastic operation portion 5a is an inner side wall at the end of the friction member 5. The elastic action part 5a is a sheet body I5 c, the peripheral surface of the pushing sleeve 4b is a cylindrical surface, and the sheet body I5 c is tangent to the peripheral surface of the pushing sleeve 4 b. The friction piece 5 is also provided with a second sheet body 5e tangent to the peripheral surface of the pushing sleeve 4b, the lug 5d and the second sheet body 5e are fixedly connected to two ends of the first sheet body 5c respectively, and the lug 5d and the first sheet body 5c as well as the first sheet body 5c and the second sheet body 5e can be directly fixedly connected or can be in arc transition. In this embodiment, the both ends of friction member 5 all have the lug 5d that the book of turning over outward formed, two lug 5d parallel arrangement, and be equipped with the regulating part 6 that can adjust distance between two lugs 5d, the quantity of two 5e of lamellar body is two and two 5e of lamellar body link firmly respectively in the both ends of cooperation portion 5 b. Specifically, the adjusting member 6 is an adjusting screw and a nut, the two protruding pieces 5d are respectively provided with a through hole 5d1, the end of the adjusting screw sequentially passes through the two through holes 5d1, and the nut is screwed on the end of the adjusting screw. Actually when production, the friction member 5 can directly utilize mould stamping forming, compares in prior art need make holding ring, steel ball and spring respectively, and this scheme can also make production efficiency higher.
As shown in fig. 2, an output gear 13 for outputting power is fixedly connected to the main shaft 1, the power input of the bidirectional automatic transmission is a variable speed motor, the bidirectional automatic transmission further comprises a forward speed change mechanism and a buffer 12 playing a role of buffering during forward speed change, and the specific structure and the working principle of the buffer 12 can refer to the transmission mechanism of the automatic variable speed motor disclosed in application No. 201711099388.5. Buffer 12 and main shaft 1 pass through the spline fit, and driving medium 2 supports to lean on buffer 12 and both cooperate through unsmooth mode, makes to form the linkage relation between driving medium 2 and the main shaft 1 through the cooperation of buffer 12 and main shaft 1 and the cooperation of driving medium 2 and buffer 12.
The forward speed change mechanism is mainly used for realizing speed switching between low-speed forward running and high-speed forward running. The advancing speed change mechanism mainly comprises a driven gear 14 axially fixed on a main shaft 1 and a connecting frame 15 circumferentially fixed on the driven gear 14, a transmission support 16 is axially fixed on the main shaft 1, the transmission support 16 is circumferentially fixed with a buffer 12, the transmission support 16 is positioned on the inner side of the connecting frame 15, a plurality of connecting claws 17 distributed around the main shaft 1 are hinged on the transmission support 16, each connecting claw 17 can swing relative to the transmission support 16, a connecting sleeve 18 is sleeved outside the transmission support 16, a plurality of pushing parts are arranged on the outer side of the connecting sleeve 18 along the circumferential direction, when the connecting sleeve 18 rotates, the pushing parts can drive the connecting claws 17 to swing, and the connecting frame 15 and the transmission support 16 can be circumferentially fixed by the swinging connecting claws 17. Two centripetal blocks 19 which are both arc-shaped and distributed on two sides of the connecting sleeve 18 are hinged in the connecting frame 15, magnetic blocks are fixed between the two centripetal blocks 19 in the connecting frame 15, the hinged point of the centripetal block 19 is close to the outer end of the centripetal block 19, and the inner end of the centripetal block 19 is adsorbed on the corresponding magnetic block.
When the vehicle advances at a low speed, the power of the input member 3 is directly transmitted through the transmission member 2 to be output at the main shaft 1. In the process, one side wall of the arc-shaped groove 3a abuts against the raised head 4b1, so that the pushing sleeve 4b rotates along with the input member 3 against the action of the elastic action part 5a on the friction member 5.
When the high-speed forward is switched, the main shaft 1 is driven by the transmission piece 2 to rotate along with the transmission piece at a high speed in a counterclockwise direction under the action of the forward speed change mechanism, the rotating speed of the transmission piece 2 is greater than that of the input piece 3, and the clutch structure enables the transmission piece 2 and the input piece 3 to be disengaged in the circumferential direction. In this state, the protruding head 4b1 still abuts against the same side wall of the arc-shaped slot 3a, so that the pushing sleeve 4b rotates along with the input member 3 against the action of the elastic action part 5a of the friction member 5.
When the vehicle is switched to reverse, the input member 3 receives power and rotates clockwise, so that the other side wall of the arc-shaped groove 3a approaches to the raised head 4b1, and if the input member 3 is taken as a stationary object, the raised head 4b1 moves along the arc-shaped groove 3 a. In the process, no action force exists between the pushing sleeve 4b and the input member 3 along the circumferential direction, and the pushing sleeve 4b is acted by the action force of the elastic action part 5a on the friction member 5, so that the pushing sleeve 4b does not rotate synchronously with the input member 3, and the pushing sleeve 4b pushes the combining sleeve 4a to move in the direction away from the transmission member 2 along the thread. Thus, the circumferential structure is switched to the circumferential linkage of the input member 3 and the transmission member 2, so that the main shaft 1 rotates reversely to realize the reverse of the vehicle. When the input member 3 rotates until the other side wall of the arc-shaped groove 3a abuts against the raised head 4b1, the input member 3 and the pushing sleeve 4b are circumferentially connected together again to form synchronous rotation.
Example two
The structure and principle of this embodiment are basically the same as those of the first embodiment, except that: in this embodiment, the friction member 5 is of a quincunx shape, the elastic acting portion 5a is a portion of the friction member 5 protruding inward, and the engaging portion 5b is one of the concave portions of the exterior of the friction member 5.
The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications or additions may be made to the described embodiments or alternatives may be employed by those skilled in the art without departing from the spirit or ambit of the invention as defined in the appended claims.
Claims (10)
1. The variable speed transmission mechanism of the bidirectional automatic speed changing device comprises a main shaft (1), an input part (3) axially fixed outside the main shaft (1) and a combining part (4) sleeved on the main shaft (1) and in threaded connection with the input part (3), wherein a friction part (5) capable of forming rotation resistance to the combining part (4) is arranged on the outer side of the combining part (4), the variable speed transmission mechanism is characterized in that the friction part (5) is made of strip-shaped metal sheets, an elastic action part (5a) and a matching part (5b) formed after bending are arranged on the friction part (5), the friction part (5) can form circumferential fixation with a shell of the bidirectional automatic speed changing device through the matching part (5b), the elastic action part (5a) abuts against the outer wall of the combining part (4), and the elastic force of the elastic action part (5a) inwards acts on the combining part (4).
2. The shift transmission mechanism of a bidirectional automatic transmission according to claim 1, wherein the friction member (5) has a ring shape having a mouth portion, and the elastic operation portion (5a) is located near the mouth portion.
3. The shift transmission mechanism of a bidirectional automatic transmission according to claim 2, wherein the friction member (5) has a tab (5d) folded outward at one end thereof, and the elastic operation portion (5a) is an inner side wall of the friction member (5) at the end thereof.
4. The gearshift transmission mechanism of a two-way automatic transmission according to claim 3, wherein the resilient action portion (5a) is a first sheet (5c), the outer circumferential surface of the engagement member (4) is a cylindrical surface, and the first sheet (5c) is tangential to the outer circumferential surface of the engagement member (4).
5. The variable speed drive of a bidirectional automatic transmission according to claim 4, wherein the friction member (5) further has a second plate (5e) tangential to the outer peripheral surface of the engaging member (4), and the protruding pieces (5d) and the second plate (5e) are respectively fixed to both ends of the first plate (5 c).
6. The gear shift transmission mechanism of a bidirectional automatic transmission as set forth in claim 5, wherein both ends of the friction member (5) are folded outwardly to form a protruding piece (5d), and an adjusting member (6) capable of adjusting the distance is provided between the two protruding pieces (5 d).
7. The speed change transmission mechanism of a bidirectional automatic transmission as recited in claim 1, 2, 3, 4, 5 or 6, wherein said engaging portion (5b) is bent into a U-shape, and the recess of the engaging portion (5b) faces outward.
8. The shift transmission mechanism of a bidirectional automatic transmission as recited in claim 1, wherein said friction member (5) has a quincunx shape, the elastic acting portion (5a) is an inwardly protruding portion of the friction member (5), and the engaging portion (5b) is an inwardly recessed portion of an outer portion of the friction member (5).
9. The shift transmission mechanism of a bidirectional automatic transmission as set forth in claim 1, wherein said friction member (5) is made of spring steel, and the friction member (5) is formed by press molding.
10. The variable speed drive mechanism of a bidirectional automatic transmission according to claim 1, wherein the coupling member (4) is cylindrical, one end of the coupling member (4) is located outside the input member (3) and is provided with an annular abutting surface (4b2), the coupling member (4) is provided with a gasket (7) and a limit snap spring (8) capable of preventing the gasket (7) from disengaging, and the friction member (5) is fixed between the annular abutting surface (4b2) and the gasket (7) along the axial direction of the coupling member (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010500412.7A CN111503261A (en) | 2020-06-04 | 2020-06-04 | Speed-changing transmission mechanism of bidirectional automatic speed-changing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010500412.7A CN111503261A (en) | 2020-06-04 | 2020-06-04 | Speed-changing transmission mechanism of bidirectional automatic speed-changing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111503261A true CN111503261A (en) | 2020-08-07 |
Family
ID=71870558
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010500412.7A Pending CN111503261A (en) | 2020-06-04 | 2020-06-04 | Speed-changing transmission mechanism of bidirectional automatic speed-changing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111503261A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113048197A (en) * | 2021-04-22 | 2021-06-29 | 玉环县东方汽车制动器厂 | Automatic transmission |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103062539A (en) * | 2011-10-22 | 2013-04-24 | 诺马德国有限责任公司 | Profile clamp with seal element |
| CN203421070U (en) * | 2013-08-06 | 2014-02-05 | 郑州职业技术学院 | Coupler |
| CN109386577A (en) * | 2018-12-18 | 2019-02-26 | 屠申富 | A kind of transmission mechanism of bidirectional automatic gear shifting device |
| CN109404636A (en) * | 2018-12-24 | 2019-03-01 | 天津市凯诺实业有限公司 | A kind of fast-assembling opening type groove clamping hoop resistant to high temperature |
| CN209875692U (en) * | 2019-01-26 | 2019-12-31 | 晟维新能源科技发展(天津)有限公司 | Snap ring for preventing bolt group of circumference installation from loosening |
| CN110701301A (en) * | 2019-11-12 | 2020-01-17 | 玉环县东方汽车制动器厂 | Reverse drive mechanism of bidirectional automatic speed variator |
| CN110701262A (en) * | 2019-11-12 | 2020-01-17 | 玉环县东方汽车制动器厂 | Speed change transmission mechanism of bidirectional automatic transmission |
| CN212251078U (en) * | 2020-06-04 | 2020-12-29 | 玉环县东方汽车制动器厂 | Speed-changing transmission mechanism of bidirectional automatic speed-changing device |
-
2020
- 2020-06-04 CN CN202010500412.7A patent/CN111503261A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103062539A (en) * | 2011-10-22 | 2013-04-24 | 诺马德国有限责任公司 | Profile clamp with seal element |
| CN203421070U (en) * | 2013-08-06 | 2014-02-05 | 郑州职业技术学院 | Coupler |
| CN109386577A (en) * | 2018-12-18 | 2019-02-26 | 屠申富 | A kind of transmission mechanism of bidirectional automatic gear shifting device |
| CN109404636A (en) * | 2018-12-24 | 2019-03-01 | 天津市凯诺实业有限公司 | A kind of fast-assembling opening type groove clamping hoop resistant to high temperature |
| CN209875692U (en) * | 2019-01-26 | 2019-12-31 | 晟维新能源科技发展(天津)有限公司 | Snap ring for preventing bolt group of circumference installation from loosening |
| CN110701301A (en) * | 2019-11-12 | 2020-01-17 | 玉环县东方汽车制动器厂 | Reverse drive mechanism of bidirectional automatic speed variator |
| CN110701262A (en) * | 2019-11-12 | 2020-01-17 | 玉环县东方汽车制动器厂 | Speed change transmission mechanism of bidirectional automatic transmission |
| CN212251078U (en) * | 2020-06-04 | 2020-12-29 | 玉环县东方汽车制动器厂 | Speed-changing transmission mechanism of bidirectional automatic speed-changing device |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113048197A (en) * | 2021-04-22 | 2021-06-29 | 玉环县东方汽车制动器厂 | Automatic transmission |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US7681705B2 (en) | Multi disc friction clutch and motorcycle therewith | |
| WO2018173488A1 (en) | Dog clutch and transmission | |
| CN212251078U (en) | Speed-changing transmission mechanism of bidirectional automatic speed-changing device | |
| CN110701301B (en) | Reversing transmission mechanism of bidirectional automatic speed changing device | |
| CN102597561A (en) | Synchronisation device for a gear box | |
| EP1143162A1 (en) | Clutch device | |
| WO2021110155A1 (en) | Fully-mechanical self-adaptive automatic transmission | |
| CN111503261A (en) | Speed-changing transmission mechanism of bidirectional automatic speed-changing device | |
| CN213776240U (en) | Speed change mechanism of speed change transmission | |
| CN105317875B (en) | Synchronization unit for transmission mechanism | |
| CN210770188U (en) | Reverse drive mechanism of bidirectional automatic speed variator | |
| CN108561454B (en) | Reversing mechanism of bidirectional variable speed motor | |
| CN214661794U (en) | Automatic transmission | |
| US2160091A (en) | Transmission synchronizer | |
| CN209959750U (en) | Synchronizer of automobile gear box | |
| CN113048197B (en) | Automatic transmission | |
| JP5431530B2 (en) | Twin clutch device | |
| CN100390434C (en) | Cambered surface friction overdrive clutch | |
| CN220151866U (en) | Bottom pushing type separating mechanism of gearbox | |
| JP3412655B2 (en) | Synchronous meshing device | |
| KR0138368Y1 (en) | Synchronizer structure of the transmission | |
| CN219413444U (en) | Marine driving gear sliding shaft sleeve limiting mechanism | |
| CN114941665B (en) | Synchronous mechanism of transmission gear shifting system | |
| KR100427875B1 (en) | Synchronizer of manual transmission for vehicle, for preventing noise in reverse shift | |
| CN216666457U (en) | Vehicle transmission gear shifting mechanism |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |