CN208595205U - A kind of variable ratio drive system - Google Patents
A kind of variable ratio drive system Download PDFInfo
- Publication number
- CN208595205U CN208595205U CN201820737513.4U CN201820737513U CN208595205U CN 208595205 U CN208595205 U CN 208595205U CN 201820737513 U CN201820737513 U CN 201820737513U CN 208595205 U CN208595205 U CN 208595205U
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- CN
- China
- Prior art keywords
- gear
- cylindricality
- drive system
- variable
- tooth
- Prior art date
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Abstract
The utility model relates to a kind of variable ratio drive systems, variable diameter gear and intermediate engaging element including engagement connection, the variable diameter gear includes tooth rest and cylindricality gear, multiple slide grooves being disposed radially are offered on tooth rest, a cylindricality gear is equipped in each slide groove, and cylindricality gear is connected with the regulating mechanism for driving it to slide in slide groove, the both ends of cylindricality gear and tooth rest are rotatablely connected, and column tooth rotary locking mechanism is equipped between cylindricality gear and regulating mechanism.Cylindricality gears slip is arranged in slide groove and forms the variable column tooth of diameter by the utility model, cylindricality gear rotates freely during changing gear diameter, after the completion of engagement, makes power be transferred to intermediate engaging element by column tooth rotary locking mechanism, complete the change of transmission ratio.
Description
Technical field
The utility model relates to technical field of mechanical transmission, and in particular to a kind of variable ratio drive system.
Background technique
If necessary to speed change during engaged transmission, generally require to change different meshed gears groups to realize, in this way
The bulky of transmission system is resulted in, and will appear pause and transition in rhythm or melody during changing transmission ratio, although there is CVT speed change at present
Structure realize variable speed, but variable speed is driven by belt, but the service life of belt is short, can not be driven big
Torque, use scope are limited.
Utility model content
The purpose of this utility model is to provide a kind of variable ratio drive system, multi-change speed can be realized, and small in size,
Variable speed may be implemented.
To achieve the above object, specifically, which includes variable diameter gear and the centre engagement of engagement connection
Unit, the variable diameter gear include tooth rest and cylindricality gear, and multiple slide grooves being disposed radially are offered on tooth rest,
A cylindricality gear is equipped in each slide groove, and cylindricality gear is connected with the regulating mechanism for driving it to slide in slide groove,
The both ends of cylindricality gear and tooth rest are rotatablely connected, and make its nothing equipped with locking cylindricality gear between cylindricality gear and regulating mechanism
The column tooth rotary locking mechanism of method rotation.Two dimension or the three-dimensional mobile diameter for realizing variable diameter gear change cylindricality gear in space
Become.
There are two the variable diameter gears, and intermediate engaging element is connected between two variable diameter gears.
The intermediate engaging element is silent chain, and silent chain includes the carrier bar of rotation connection and is arranged on the inside of carrier bar
Sprocket.
The connection that the sprocket and carrier bar relatively rotate, and be equipped between sprocket and carrier bar and make chain teeth directional columnar tooth wheel side
Mobile engagement auxiliary body.
The engagement auxiliary body includes for spring or magnet.
The V-arrangement that the sprocket is made of multiple sprocket units.
The intermediate engaging element is intermediate gear, and intermediate gear is slidably arranged between two variable diameter gears.
The intermediate engaging element includes two gear rings, and gear ring has internal tooth and external tooth, and the external tooth of two gear rings is meshed,
The internal tooth of each gear ring is engaged with the cylindricality gear of a variable diameter gear, and two gear rings, which are connected separately with, drives it in two variable diameters
The gear ring sliding equipment slided between gear.
The regulating mechanism is lead screw, and each cylindricality gear is connect by bearing block with a threads of lead screw.
Column tooth rotary locking mechanism is the electromagnetic brake being connected on bearing block.Regulating mechanism is not limited to silk in the present embodiment
Thick stick, same column tooth rotary locking mechanism are also not necessarily limited to electromagnetic brake.
The utility model has the advantages that the setting of cylindricality gears slip is formed diameter by the utility model in slide groove
Variable column tooth, the diameter by changing column tooth can change transmission ratio, cylindricality gear during changing gear diameter
It rotates freely, after the completion of engagement, makes power be transferred to intermediate engaging element by column tooth rotary locking mechanism, complete transmission
The change of ratio.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model embodiment 1.
Fig. 2 is the structural schematic diagram of variable diameter gear.
Fig. 3 is the structural schematic diagram of silent chain.
Fig. 4 is the top view of silent chain.
Fig. 5 is the partial enlarged view in Fig. 4 at A.
Fig. 6 is the structural schematic diagram of the utility model embodiment 2.
Fig. 7 is the structural schematic diagram of the utility model embodiment 3.
Fig. 8 is the top view of Fig. 7.
Fig. 9 is the structural schematic diagram of the utility model embodiment 4.
Figure 10 is the structural schematic diagram of the utility model embodiment 5.
Figure 11 is the structural schematic diagram of the utility model embodiment 6.
In figure: 1- variable diameter gear 2- silent chain 3- tooth rest 4- cylindricality gear 5- slide groove 6- main gear shaft 7-
Thick stick 8- bearing block 9- electromagnetic brake 10- carrier bar 11- sprocket 12- sprocket unit 13- intermediate gear 14- gear ring 15- is protected
Hold frame 16- expansion tightening wheel.
Specific embodiment
The following examples illustrate the utility model, but is not intended to limit the scope of the present invention.
Embodiment 1
Referring to Fig. 1, which includes that two variable diameter gears 1 and a silent chain 2, silent chain 2 are connected to two
Between a variable diameter gear 1, the diameter change of two variable diameter gears 1 will obtain different transmission ratios, 1 diameter of variable diameter gear
While becoming larger, another 1 diameter of variable diameter gear reduces, and two 1 synchronous diameters of variable diameter gear, and silent chain 2 is always with two
A variable diameter gear 1 engages.
Referring to Fig. 1~2, variable diameter gear 1 includes tooth rest 3 and cylindricality gear 4, offered on tooth rest 3 it is multiple radially
The slide groove 5 of setting, each slide groove 5 is interior to be equipped with a cylindricality gear 4, and cylindricality gear 4 is connected with and drives it in slide groove 5
The regulating mechanism of interior sliding, the both ends of cylindricality gear 4 and tooth rest 3 are rotatablely connected, and between cylindricality gear 4 and regulating mechanism
The column tooth rotary locking mechanism that rotate it can not equipped with locking cylindricality gear 4.Regulating mechanism in the present embodiment is lead screw 7,
Each cylindricality gear 4 is threadedly coupled by bearing block 8 with a lead screw 7, is adjusted each cylindricality gear 4 by rotational lead screw 7 and is existed
Position on tooth rest 3, all synchronous workings of lead screw 7 are to change the diameter of variable diameter gear 1.Column tooth rotary locking mechanism can be with
It is the electromagnetic brake 9 being connected on bearing block 8.
Tooth rest 3 has symmetrically arranged two, and tooth rest 3 is equipped with the cylindricality gear 4 of eight groups or other quantity, cylindricality
Gear 4 is arranged between two tooth rests 3, and the inside of tooth rest 3 is equipped with tapered slope, and tapered slope can support silent chain 2
Can be at circle, and certain frictional force is provided, reason for this is that 5 quantity of slide groove opened up on tooth rest 3 is that have
Limit, that is to say, that the quantity of cylindricality gear 4 is limited, if silent chain 2 is engaged with cylindricality gear 4 merely, tooth
The site of engagement of shape chain 2 is polygon, will result in this way power output be it is discontinuous, the present embodiment by setting tapered surface
Enable to silent chain 2 connection be it is circular, guarantee the continuity of power output.
Referring to Fig. 3~5, silent chain 2 includes the carrier bar 10 of rotation connection and the sprocket 11 that 10 inside of carrier bar is arranged in.
The connection that sprocket 11 and carrier bar 10 relatively rotate in the present embodiment, and being equipped between sprocket 11 and carrier bar 10 makes sprocket 11 to column
The mobile spring in 4 side of shape gear or magnet (not shown).The V-arrangement that sprocket 11 is made of multiple sprocket units 12,
Complete can thus make part sprocket unit 12 and cylindricality gear 4 is tooth engagement, some is then part engagement, regardless of columnar tooth
How 4 position on tooth rest 3 of wheel changes, and can guarantee that engaging for silent chain 2 and cylindricality gear 4 can with guarantee to be driven
By property.
Tooth rest 3 moves axially, and the tapered slope of 3 inside of tooth rest will squeeze silent chain 2, to change silent chain 2
Diameter, while the cylindricality gear 4 in slide groove 5 is moved up and down under the drive of lead screw 7 and is kept in place, variable diameter
During, cylindricality gear 4 is rotated freely with silent chain 2, at this time without power output, when electromagnetic brake 9 locks cylindricality gear
After 4, the power that main gear shaft 6 inputs drives silent chain 2 to rotate by cylindricality gear 4, forms the transmission of power.
Embodiment 2
Referring to Fig. 6, there are two cylindricality gear 4 in each variable diameter gear 1 in the present embodiment, cylindricality gear 4 changes with tooth rest 3
While becoming 2 diameter of silent chain, cylindricality gear 4 is slided up and down and is rotated in slide groove 5.Two two changes in the utility model
The silent chain 2 of diameter gear 1 uses common chain, can also use two variable diameter gears 1 of roller chain link.
Embodiment 3
Referring to Fig. 7~8, the variable ratio drive system of the present embodiment includes two variable diameter gears 1 and an intermediate gear 13, in
Between gear 13 engaged respectively with the cylindricality gear 4 on two variable diameter gears 1, when change cylindricality gear 4 position realize variable diameter when,
In order to guarantee engaging for intermediate gear 13 and cylindricality gear 4, intermediate gear 13 is slidably arranged between two variable diameter gears 1.
In order to stablize power transmission, multiple groups variable diameter gear 1 and intermediate gear 13, multiple groups variable diameter are equipped in the present embodiment
Gear 1 is axially disposed in a main gear shaft 6, and same intermediate gear 13 is also disposed on an axis, the column on variable diameter gear 1
Shape gear 4 is staggered, and reason for this is that 4 quantity of cylindricality gear on every group of tooth rest 3 to be limited, in order to guarantee to begin
Dynamic input, output eventually, it is necessary to there is cylindricality gear 4 to engage with intermediate gear 13 always, in this way when one group of variable diameter gear 1 and
After the completion of intermediate gear 13 engages, the continuation of cylindricality gear 4 of next group of variable diameter gear 1 is engaged with intermediate gear 13, dynamic to guarantee
The stability of power transmission.
Embodiment 4
Referring to Fig. 9, the variable ratio drive system in the present embodiment includes two variable diameter gears 1 and two gear rings 14, gear ring 14
With internal tooth and external tooth, the external tooth of two gear rings 14 is meshed, the internal tooth of each gear ring 14 and the cylindricality of a variable diameter gear 1
Gear 4 engages, and two gear rings 14 are connected separately with the lead screw or oil cylinder for driving it to slide between two variable diameter gears 1.Cylindricality
Itself is rotated when gear 4 is moved up and down along slide groove 5, and always with the interior tooth engagement of gear ring 14, while gear ring 14 is moved,
Electromagnetic brake 9 locks the output of formation power after cylindricality gear 4.
Embodiment 5
Referring to Figure 10, the variable ratio drive system in the present embodiment includes a variable diameter gear 1 and a gear ring 14, gear ring 14
With internal tooth and external tooth, the internal tooth of gear ring 14 is engaged with cylindricality gear 4, and cylindricality gear 4 is connected with a retainer 15, retainer
15 are arranged in the inside of gear ring 14, and the sliding slot of annular is formed between retainer 15 and gear ring 14, and cylindricality gear 4 is arranged in sliding slot,
Retainer 15 guarantees that cylindricality gear 4 is meshed with the internal tooth of gear ring 14 always.
Cylindricality gear 4 slides up and down realization variable diameter in slide groove 5, without power if cylindricality gear 4 rotates freely
Output, after any one cylindricality gear 4 is locked, main gear shaft 6 is rotated as power input belt movable tooth wheel carrier 3, tooth rest 3
Then cylindricality gear 4 is driven to rotate by slide groove 5, and cylindricality gear 4 not only slides in slide groove 5, but also by retainer 15
Constraint, after any one cylindricality gear 4 is locked, cylindricality gear 4 from far from main gear shaft 6 to mobile close to main gear shaft 6
When gear ring 14 speed be it is gradually slack-off, it is on the contrary then gradually become faster, realize fast-slow-fast regularity variation of speed.
Slide groove 5 in the present embodiment is arc, can achieve certain compensating action in this way, so that the speed of gear ring 14
Degree variation is more linear, and power transmission is more stable.
Embodiment 6
Referring to Figure 11, the present embodiment is the difference from embodiment 1 is that two variable diameter gears 1 pass through conventional chain or full depth tooth
Shape chain 2 connects, and cylindricality gear 4 slides in slide groove 5 when variable diameter, before cylindricality gear 4 reaches suitable position, each columnar tooth
4 rotation angle of wheel is different, and by taking left side variable diameter gear 1 counterclockwise rotation as an example, the cylindricality gear 4 of upside first rotates 10 units
Angle, then anticlockwise cylindricality gear 4 rotates the angle for successively rotating 1 unit of successively decreasing counterclockwise, in order to guarantee tooth form
Chain 2 is engaged with cylindricality gear 4, and silent chain 2 is connected with a tensioning wheel 16.
Although above having made detailed description to the utility model with generality explanation and specific embodiment,
On the basis of the utility model, it can be made some modifications or improvements, this is apparent to those skilled in the art
's.Therefore, these modifications or improvements on the basis of without departing from the spirit of the present invention, belong to the utility model and want
Seek the range of protection.
Claims (10)
1. a kind of variable ratio drive system, it is characterised in that: the variable ratio drive system include engagement connection variable diameter gear (1) and
Intermediate engaging element, the variable diameter gear (1) include tooth rest (3) and cylindricality gear (4), are offered on tooth rest (3) more
A slide groove (5) being disposed radially, each slide groove (5) is interior to be equipped with a cylindricality gear (4), and cylindricality gear (4) connects
There is the regulating mechanism for driving it to slide in slide groove (5), the both ends and tooth rest (3) of cylindricality gear (4) are rotatablely connected, and column
The column tooth rotary locking mechanism of locking cylindricality gear (4) is equipped between shape gear (4) and regulating mechanism.
2. variable ratio drive system according to claim 1, it is characterised in that: there are two the variable diameter gears (1), and centre is nibbled
Unit is closed to be connected between two variable diameter gears (1).
3. variable ratio drive system according to claim 2, it is characterised in that: the intermediate engaging element is silent chain (2),
Silent chain (2) includes the sprocket (11) of the carrier bar (10) and setting of rotation connection on the inside of carrier bar (10).
4. variable ratio drive system according to claim 3, it is characterised in that: the sprocket (11) and carrier bar (10) turn relatively
Dynamic connection, and being equipped between sprocket (11) and carrier bar (10) keeps sprocket (11) auxiliary to engaging for cylindricality gear (4) side movement
Help mechanism.
5. variable ratio drive system according to claim 4, it is characterised in that: the engagement auxiliary body include for spring or
Person's magnet.
6. variable ratio drive system according to claim 4, it is characterised in that: the sprocket (11) is by multiple sprocket units
(12) V-arrangement formed.
7. variable ratio drive system according to claim 1, it is characterised in that: the intermediate engaging element is intermediate gear
(13), intermediate gear (13) is slidably arranged between two variable diameter gears (1).
8. variable ratio drive system according to claim 1, it is characterised in that: the intermediate engaging element includes two gear rings
(14), gear ring (14) has internal tooth and external tooth, and the external tooth of two gear rings (14) is meshed, the internal tooth of each gear ring (14) and one
The cylindricality gear (4) of variable diameter gear (1) engages, two gear rings (14) be connected separately with drive its two variable diameter gears (1) it
Between the gear ring sliding equipment that slides.
9. variable ratio drive system according to claim 1, it is characterised in that: the regulating mechanism is lead screw (7), Mei Gezhu
Shape gear (4) is threadedly coupled by bearing block (8) with a lead screw (7).
10. variable ratio drive system according to claim 9, it is characterised in that: column tooth rotary locking mechanism is to be connected to axis
Hold the electromagnetic brake (9) on seat (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820737513.4U CN208595205U (en) | 2018-05-17 | 2018-05-17 | A kind of variable ratio drive system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820737513.4U CN208595205U (en) | 2018-05-17 | 2018-05-17 | A kind of variable ratio drive system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208595205U true CN208595205U (en) | 2019-03-12 |
Family
ID=65600623
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820737513.4U Expired - Fee Related CN208595205U (en) | 2018-05-17 | 2018-05-17 | A kind of variable ratio drive system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208595205U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108506439A (en) * | 2018-05-17 | 2018-09-07 | 张锐 | A kind of variable ratio drive system |
-
2018
- 2018-05-17 CN CN201820737513.4U patent/CN208595205U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108506439A (en) * | 2018-05-17 | 2018-09-07 | 张锐 | A kind of variable ratio drive system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190312 |