CN206874780U - A kind of ratchet - Google Patents
A kind of ratchet Download PDFInfo
- Publication number
- CN206874780U CN206874780U CN201720330445.5U CN201720330445U CN206874780U CN 206874780 U CN206874780 U CN 206874780U CN 201720330445 U CN201720330445 U CN 201720330445U CN 206874780 U CN206874780 U CN 206874780U
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- China
- Prior art keywords
- needle
- ratchet
- central
- hole
- needle roller
- Prior art date
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- 230000005540 biological transmission Effects 0.000 claims description 6
- 238000010276 construction Methods 0.000 abstract description 3
- 238000009434 installation Methods 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 3
- 238000005096 rolling process Methods 0.000 description 2
- 230000002596 correlated effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
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- Gears, Cams (AREA)
Abstract
The utility model discloses a kind of ratchet, it is characterized in that the ratchet includes the cages for needle of gear and Matching installation with a central through hole in the central through hole, some handle ratchet wheels are distributed with the internal face of the central through hole, some axial needle rollers are evenly equipped with the cages for needle, each needle roller is correspondingly fitted in the teeth groove between the adjacent handle ratchet wheel.The utility model has the advantages that ratchet is simple in construction, have a wide range of application, can in one direction lock, be dallied on another direction.
Description
Technical field
It the utility model is related to gear, and in particular to a kind of ratchet.
Background technology
Gear is a kind of conventional mechanical element for being used to transmit rotating torque, and ratchet is then on the basis of gear
On, a kind of special gear structure for being limited its rotation direction.
Lockable mechanism is provided with current ratchet mostly, gear can only rotate towards single direction, and can not be towards phase
Anti- direction rotates, and this significantly limit the application environment of ratchet.
Those skilled in the art are badly in need of a kind of to lock transmission in one direction, can dallying on another direction
One-way transmission gear, so as to adapt to more transmission mechanism application scenario.
The content of the invention
The purpose of this utility model is according in place of above-mentioned the deficiencies in the prior art, there is provided a kind of ratchet, this is unidirectional
Gear makes each needle roller on cages for needle be located at adjacent interior spine by setting handle ratchet wheel in the central through hole of gear
Between the teeth groove of wheel, so that needle roller under the transmission of rotating shaft, can only in one direction be dallied, locked on another direction.
The utility model purpose is realized and completed by following technical scheme：
A kind of ratchet, it is characterised in that the ratchet include with a central through hole gear and
With the cages for needle in the central through hole, handle ratchet wheel, the rolling are distributed with the internal face of the central through hole
Some axial needle rollers are evenly equipped with pin retainer, each needle roller is correspondingly fitted in the teeth groove between the adjacent handle ratchet wheel,
The teeth groove makes the needle roller one-directional rotation.
The tooth form of the handle ratchet wheel is in asymmetric circular arc.
The cylindrical frame that the cages for needle is adapted for a size with the central through hole inwall, including upper circle
Ring, lower annulus and some both columns of connection.
With position-limited rack, institute on conduit, another side with the accommodating needle roller on one side of the column
It is spacing to state the needle roller progress that position-limited rack is used to be pointed in the adjacent column conduit.
Some projections are distributed with the outer rim of the upper annulus and the lower annulus, the projection clamping is arranged at each institute
State in the teeth groove between handle ratchet wheel.
The central through hole bottom of the gear has inward flange, to cages for needle described in support.
A rotating shaft is inserted with the cages for needle, the rotating shaft outside wall surface forms transmission with each needle roller and coordinated.
The utility model has the advantages that ratchet is simple in construction, have a wide range of application, can lock in one direction, separately
Dallied on one direction.
Brief description of the drawings
Fig. 1 is the schematic diagram of the utility model middle gear body；
Fig. 2 is the A-A sectional views of the utility model Fig. 1 middle gear bodies；
Fig. 3 is the side view of ratchet in the utility model；
Fig. 4 is the B direction views of ratchet in the utility model Fig. 3；
Fig. 5 is the C-C sectional views of ratchet in the utility model Fig. 3；
Fig. 6 is the floor map of upper annulus or lower annulus in cages for needle in the utility model；
Fig. 7 is the part elevation schematic diagram of cages for needle in the utility model；
Fig. 8 is the schematic diagram for being fitted with rotating shaft in the utility model in ratchet.
Embodiment
Feature of the present utility model and other correlated characteristics are made further specifically by embodiment below in conjunction with accompanying drawing
It is bright, in order to the understanding of technical staff of the same trade：
Such as Fig. 1-8, mark 1-12 is respectively in figure：Gear 1, handle ratchet wheel 2, teeth groove 3, inward flange 4, projection 5, upper circle
Ring 6, column 7, needle roller 8, position-limited rack 9, lower annulus 10, cages for needle 11, rotating shaft 12.
Embodiment：As shown in figures 1-8, the present embodiment is specifically related to a kind of ratchet, and the ratchet is used for same rotating shaft
12 are used cooperatively, and can in one direction lock, not locked on another direction（Dally）, its mainly by gear 1,
Cages for needle 11 and some needle rollers 8 being arranged on cages for needle 11 are formed.
As shown in figs. 1-7, some gear teeth are evenly equipped with the wheel rim of gear 1, and in the centre of gear 1
Place offers a central through hole, and the inner chamber of the central through hole, which is used to coordinate, installs foregoing cages for needle 11, in order that needle roller
Retainer 11 can obtain in the axial direction it is spacing, as shown in Fig. 2 being set on the internal face of the central through hole bottom of gear 1
A circle inward flange 4 is equipped with, it is spacing to carry out support to cages for needle 11.As shown in figure 1, lead at the center of gear 1
The structure of handle ratchet wheel 2 is offered on the internal face of hole, the tooth form of handle ratchet wheel 2 is in asymmetric circular arc, is between adjacent handle ratchet wheel 2
Teeth groove 3.
As shown in figs. 4-7, cages for needle 11 is arranged among the central through hole of gear 1, and is in and central through hole
The plastic cylinder construction that inwall is adapted, including upper annulus 6, lower annulus 10 and some both columns 7 of connection；Such as Fig. 4
It is shown, some projections 5 are evenly equipped with the outer edge of upper annulus 6 and lower annulus 10, the set location of each projection 5 just corresponds to
Teeth groove 3 between each adjacent handle ratchet wheel 2, so that the rear position among plugging to central through hole of cages for needle 11 keeps solid
It is fixed, prevent swing offset；As shown in Fig. 5,7, the circumferentially spaced distribution between upper annulus 6 and lower annulus 10 of each column 7,
On one side of column 7 with conduit that is accommodating and being rotated for needle roller 8, another side with position-limited rack 9, the position-limited rack
9 needle rollers 8 being directed towards on column 7 are spacing to carry out lateral rest to it, and position-limited rack 9 generally constructs in oblique bridging；
Needle roller 8 is provided with the side with conduit on column 7, and needle roller 8 is held in position via the lateral rest of position-limited rack 9, each rolling
Pin 8 fits among teeth groove 3 as shown in Figure 5, the structure of special teeth groove 3 between adjacent handle ratchet wheel 2, can make needle roller 8 in up time
Pin direction rotates, can not counterclockwise rotated；It should be noted that the quantity of needle roller 8 is not fixed uniquely, can be according to reality
Depending on the situation of border.
As shown in figure 8, the ratchet collocation rotating shaft 12 in the present embodiment, is plugged into foregoing needle roller guarantor when by rotating shaft 12
After holding among frame 11, the outside wall surface of rotating shaft 12 is formed with each needle roller 8 on cages for needle 11 to be interference fitted, in the pressure of rotating shaft 12
Under power effect, each needle roller 8 is brought into close contact with the teeth groove 3 on central through hole internal face.
As shown in figures 1-8, the method for work of ratchet is as follows in the present embodiment：
When rotating shaft 12 is turned clockwise, in the presence of frictional drive, each needle roller 8 is in rotate counterclockwise, also
It is to say, slope direction of the needle roller 8 into teeth groove 3 rolls, and needle roller 8 is multiple by the larger frictional resistance for coming from ramp structure
Frictional resistance accumulated value suffered by needle roller 8 will produce the counter-force for hindering rotating shaft 12 to be rotated further, and make rotating shaft 12 by unidirectional gear lock
An overall structure is tightly formed, therefore the gear teeth in ratchet outer rim can transmit the rotating torque of rotating shaft 12；
When rotating shaft 12 carries out rotate counterclockwise, in the presence of frictional drive, each needle roller 8 is in turning clockwise, also
It is to say, circular arc direction of the needle roller 8 on the handle ratchet wheel 2 to outside teeth groove 3 rolls, because needle roller 8 is the same as the arc surface friction on handle ratchet wheel 2
Power is smaller, ratchet can not countershaft 12 form locking, rotating shaft 12 between the gear 1 of ratchet by produce idle running
Phenomenon, the gear teeth in the outer rim of gear 1 can not outwards transmit the rotating torque of rotating shaft 12.
Claims (7)
1. a kind of ratchet, it is characterised in that the ratchet includes gear and matching with a central through hole
Cages for needle in the central through hole, handle ratchet wheel, the needle roller is distributed with the internal face of the central through hole
Some axial needle rollers are evenly equipped with retainer, each needle roller is correspondingly fitted in the teeth groove between the adjacent handle ratchet wheel, institute
Stating teeth groove makes the needle roller one-directional rotation.
2. a kind of ratchet according to claim 1, it is characterised in that the tooth form of the handle ratchet wheel is in asymmetric circular arc
Shape.
A kind of 3. ratchet according to claim 1, it is characterised in that the cages for needle be a size with it is described
The cylindrical frame that central through hole inwall is adapted, including upper annulus, lower annulus and some both columns of connection.
4. a kind of ratchet according to claim 3, it is characterised in that have on a side of the column accommodating
There is position-limited rack, the position-limited rack is used to be pointed to the adjacent column conduit on the conduit of the needle roller, another side
In the needle roller carry out it is spacing.
A kind of 5. ratchet according to claim 3, it is characterised in that the upper annulus and the lower annulus it is outer
Some projections are distributed with edge, the projection clamping is arranged in the teeth groove between each handle ratchet wheel.
A kind of 6. ratchet according to claim 1, it is characterised in that the central through hole bottom tool of the gear
There is inward flange, to cages for needle described in support.
A kind of 7. ratchet according to claim 1, it is characterised in that a rotating shaft is inserted with the cages for needle,
The rotating shaft outside wall surface forms transmission with each needle roller and coordinated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720330445.5U CN206874780U (en) | 2017-03-31 | 2017-03-31 | A kind of ratchet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720330445.5U CN206874780U (en) | 2017-03-31 | 2017-03-31 | A kind of ratchet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206874780U true CN206874780U (en) | 2018-01-12 |
Family
ID=61325844
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720330445.5U Active CN206874780U (en) | 2017-03-31 | 2017-03-31 | A kind of ratchet |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206874780U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111920227A (en) * | 2020-07-14 | 2020-11-13 | 武汉博熙包装材料有限公司 | Wood pulp receiver |
-
2017
- 2017-03-31 CN CN201720330445.5U patent/CN206874780U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111920227A (en) * | 2020-07-14 | 2020-11-13 | 武汉博熙包装材料有限公司 | Wood pulp receiver |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20200805 Address after: Hangzhou City, Zhejiang province 311231 Xiaoshan economic and Technological Development Zone District Bridge High ten Road No. 122 Patentee after: SONGGANG TECHNOLOGY (ZHEJIANG) Co.,Ltd. Address before: 201505 Shanghai Jinshan District City Lin Zhen Lin Shing Road 251 building 18 Patentee before: Liu Yixin |