CN208381146U - spring clutch - Google Patents
spring clutch Download PDFInfo
- Publication number
- CN208381146U CN208381146U CN201820569364.5U CN201820569364U CN208381146U CN 208381146 U CN208381146 U CN 208381146U CN 201820569364 U CN201820569364 U CN 201820569364U CN 208381146 U CN208381146 U CN 208381146U
- Authority
- CN
- China
- Prior art keywords
- sidepiece part
- input
- spring
- output
- helical spring
- 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.)
- Expired - Fee Related
Links
Landscapes
- Mechanical Operated Clutches (AREA)
Abstract
A kind of spring clutch prevents helical spring from falling between the input sidepiece part of spring clutch and the respective opposed faces of output sidepiece part.To input sidepiece part and the connecting hole that is arranged in the opposed opposed faces of output sidepiece part with can mode free to slide be inserted in output sidepiece part the opposed faces opposed with input sidepiece part on the engagement shaft that is arranged, make to engage in the axial direction from the periphery of engagement shaft engaging protuberances outstanding with the step surface of connecting hole, limitation input sidepiece part and output sidepiece part are relatively moved to the direction being separated from each other in the axial direction, even if thus in input sidepiece part, in the lower situation of axial dimension precision for exporting sidepiece part, it is wound with a part of the input sidepiece part of helical spring that is, the interval between sleeve and a part that is, the respective opposed faces of output shaft for exporting sidepiece part will not be bigger than the width dimensions of the section of helical spring, it can prevent helical spring from falling between the opposed faces of two components.
Description
Technical field
The spring clutch transmitted the utility model relates to which the unidirectional rotation of sidepiece part will be inputted to output sidepiece part.
Background technique
As the one-way clutch of the paper advance mechanism for being assembled in printer, manifolder, facsimile machine etc., in the past it has been known that there is by
The fastening of helical spring and the releasing of the tightening state switches over the transmitting of unidirectional torque (driving force) with cutting
Spring clutch.
As recorded in non-patent literature 1, as basic structure, spring clutch is mostly by cylindric input side
The output sidepiece part (follower lever) of component (drive rod) and outer diameter cylindrical shape identical with the input sidepiece part is existed each other with end
In axial direction it is opposed and around same axle center rotation state configuration, and with across the input sidepiece part and output sidepiece part it is respective
The mode of periphery of opposite end be wound with helical spring.
In the spring clutch of above structure, if making to input sidepiece part to prescribed direction (with the spiral from input side
The opposite direction of take-up direction in the case where spring) rotation, then helical spring undergauge, to input sidepiece part and output sidepiece part
It being fastened, the rotation for thus inputting sidepiece part is transmitted to output sidepiece part, if rotating input sidepiece part round about,
Helical spring is expanding, do not implement for input sidepiece part and export sidepiece part fastening, therefore, do not implement from input sidepiece part to
The rotation transmitting for exporting sidepiece part, only inputs sidepiece part rotation (idle running).
Non-patent literature 1: " machine components service manual --- spring ", editor: NHK Spring Co. Ltd, nineteen ninety-five 2
The moon 15 was issued, P.136
However, in spring clutch as described above, in general, inputting sidepiece part and exporting the respective opposed of sidepiece part
Interval between face is set smaller than the width dimensions of the section of helical spring.However, in input sidepiece part and output side
In the axial dimension precision of part, the lower situation of position accuracy when assembled, input sidepiece part and output sidepiece part are worried
Respective opposed faces between interval be greater than the size of setting, a part of the axial central portion of helical spring falls into two components
Respective opposed faces between gap and cause torsion stiffness become smaller or responsiveness reduce.
Utility model content
Therefore, the project of the utility model is, prevents helical spring from falling into the input sidepiece part of spring clutch and defeated
Out between the respective opposed faces of sidepiece part.
In order to solve the above problems, the utility model uses such as flowering structure, has: input sidepiece part and output side
Part, they are arranged with the state rotated around same axis, and the respective end for being formed on the outer periphery barrel surface is each other in axial direction
It is upper opposed；And helical spring, across the periphery of the input sidepiece part and the respective opposite end for exporting sidepiece part
Winding, the interval between the input sidepiece part and the respective opposed faces for exporting sidepiece part are set than the helical spring
Section width dimensions it is small, in the center of the input sidepiece part and one of the respective opposed faces for exporting sidepiece part,
The circular connecting hole axially extended is set, it is another in the input sidepiece part and the respective opposed faces for exporting sidepiece part
The center of one, setting with can mode free to slide be inserted in the engagement shaft of the connecting hole, the engagement shaft have from
The inner surface of its outer circumferential radial outside engaging protuberances outstanding, the engaging protuberances of the engagement shaft and the connecting hole is in axial direction
Thus upper engaging limits the input sidepiece part and exports sidepiece part in the axial direction to the direction relative movement being separated from each other.
According to above structure, even if in the case where inputting sidepiece part, exporting the lower situation of axial dimension precision of sidepiece part,
In the state that Combined clutch is got up, the engaging protuberances of engagement shaft can also engage in the axial direction with the inner surface of connecting hole, from
And limit input sidepiece part and export sidepiece part and relatively moved in the axial direction to the direction that is separated from each other, therefore input sidepiece part and
The interval exported between the respective opposed faces of sidepiece part will not be bigger than the width dimensions of the section of helical spring, helical spring
A part of gap that can not be fallen between the opposed faces of axial central portion.
Here, can in the following way, the connecting hole is to be formed with path hole portion in open side and formed in inboard
Two layers of hole of the major diameter hole portion for having diameter bigger than the path hole portion, the engaging protuberances of the engagement shaft engage with this in the axial direction
Step surface between the path hole portion and major diameter hole portion in hole is opposed.
In addition, the structure formed by using the engagement shaft by synthetic resin, being provided with before it in the engagement shaft
End face and outer peripheral surface form the axial groove of opening and form the structure of at least one of centre bore of opening in its front end face, by
It, can be as long as this is set as making engagement shaft easily flexible deformation and engagement shaft can be inserted in the fastener of connecting hole
When assembling clutch, efficiently implements input sidepiece part and export the combination operation of sidepiece part.
In addition, be section shape according to the helical spring being polygon and one of them face and the input side
Interval between the component of component and outlet side component contact, the input sidepiece part and the respective opposed faces for exporting sidepiece part
Be set to the helical spring with input sidepiece part and outlet side component contact contact surface width dimensions 95% with
Under structure, then can be prevented more reliably helical spring fall into input sidepiece part and export sidepiece part respective opposed faces
Between.
The spring clutch of the utility model is as described above, by input sidepiece part and exporting the respective of sidepiece part
The connecting hole of one of opposed faces setting with can mode free to slide be inserted in the engagement shaft of another one setting, and will be from
The outer circumferential radial outside engaging protuberances outstanding of the engagement shaft engage with the inner surface of connecting hole in the axial direction, thus limit defeated
Enter sidepiece part and export sidepiece part and relatively moved in the axial direction to the direction that is separated from each other, therefore even if in input sidepiece part, defeated
Out in the lower situation of axial dimension precision of sidepiece part, can also prevent helical spring fall between the opposed faces of two components and
Therefore the reduction of torsion stiffness, responsiveness caused by.
Detailed description of the invention
Figure 1A is the vertical profile main view of the spring clutch of embodiment, and Figure 1B is to be exaggerated the major part of Figure 1A to cut open
View.
Fig. 2 is the exploded perspective view of the major part of the spring clutch of Fig. 1.
Fig. 3 is the cross-sectional view of the III-III line along Fig. 1.
Fig. 4 is the cross-sectional view for being exaggerated the major part of helical spring of Fig. 1.
Description of symbols
1 ... input sidepiece part；1a ... connecting hole；1b ... step surface；2 ... output sidepiece parts；3 ... helical springs；3a ... hook
Portion；4 ... control gears；5 ... input shafts；6 ... sleeves；7 ... screws；8 ... output shafts；9 ... engagement shaft；9a ... centre bore；9b…
Slit (axial groove)；9c ... engaging protuberances；10 ... output gears；11 ... bearings；12 ... shells.
Specific embodiment
Hereinafter, being illustrated based on attached drawing to the embodiments of the present invention.As shown in Figure 1A and Fig. 2, the spring from
Clutch is substantially made of input sidepiece part 1 and output sidepiece part 2, helical spring 3 and control gear 4.Input 1 He of sidepiece part
Output sidepiece part 2 is opposed in the axial direction, is arranged with the state rotated around same axle center, helical spring 3 is across the input sidepiece part 1
With output sidepiece part 2 respective opposite end periphery wind, control gear 4 with can be free to slide mode and input
The periphery of sidepiece part 1 is chimeric, as described later, to the transmitting for exporting sidepiece part 2 and cuts off the transmitting to the rotation of input sidepiece part 1
It is controlled.
The input sidepiece part 1 is will be by from province by the screw 7 for the periphery for being screwed into input shaft 5 from the periphery of sleeve 6
The input shaft 5 of the driving sources such as motor that sketch map shows input torque (driving force) and the outlet side of input shaft 5 is sheathed on (with outlet side
The opposed side of component 2) end periphery 6 integration of sleeve made of component.
State and input shaft 5 of the sleeve 6 of the input sidepiece part 1 to be axially protruded from the outlet side end face of input shaft 5
Integration, the centre become as a result, in the opposed faces opposed with output sidepiece part 2 of input sidepiece part 1 are provided with along axial direction
The shape of the circular connecting hole 1a extended.Moreover, being inputted from the inner peripheral surface of the outlet side end face part outstanding of input shaft 5
Near the outlet side end face of axis 5 have step, than the step by outlet side part formed diameter ratio by input side section
It is small.The connecting hole 1a for inputting sidepiece part 1 as a result, which becomes, to be formed with path hole portion in open side and is formed with diameter than small in inboard
Two layers of hole of the big major diameter hole portion of diameter hole portion.In addition, the outer peripheral surface of sleeve 6, which becomes input side, forms to obtain two layers big of circle of diameter
Cylinder face, is screwed into screw 7 in its large-diameter portion, control gear 4 is fitted into the periphery of the part adjacent with large-diameter portion of small diameter portion, small
The periphery of the output side section in diameter portion is wound with the half portion by input side of helical spring 3.
The output sidepiece part 2 by output shaft 8, in output shaft 8 by input side (side opposed with input sidepiece part 2)
The output gear 10 that the engagement shaft 9 of centre setting of end face and the periphery of the axial central portion in output shaft 8 are fitted and fixed with
It constitutes, the output shaft 8 and engagement shaft 9 are integrally formed by synthetic resin.
The output shaft 8 of the output sidepiece part 2 the periphery of the end by input side be wound with helical spring 3 by outlet side
Half portion, the end of opposite side is supported on shell 12 by bearing 11 in a manner of it can rotate freely.Engagement shaft 9 is to can oneself
Connecting hole 1a (the inside sky of the protruding portion outstanding of slave input shaft 5 of sleeve 6 of input sidepiece part 1 is inserted in by the mode slided
Between), as described later, engage with sleeve 6.Moreover, output gear 10 is engaged in the rotation transmission gear with the outside of illustration omitted
In the state of, it rotates integrally with output shaft 8, thus transmits driving force to driven member via the rotation transmission gear.
Here, as shown in Figure 1B, Fig. 2 and Fig. 3, engagement shaft 9 have its front end face formed opening centre bore 9a, from
Its front end face is axially extended and is penetrated through from outer peripheral surface to multiple slits (axial groove) 9b of centre bore 9a and from its front end
To radial outside multiple engaging protuberances 9c outstanding at the position without slit 9b on periphery.Moreover, each card of the engagement shaft 9
Close 1b pairs of step surface of protrusion 9c in the axial direction between the path hole portion and major diameter hole portion of the connecting hole 1a of input sidepiece part 1
It sets, by engaging in the axial direction with step surface 1b, thus limitation input sidepiece part 1 and output sidepiece part 2 are in the axial direction to phase
The direction relative movement mutually separated.
The helical spring 3 is the component with the section shape for implementing chamfering to each corner of quadrangle (referring to figure
4), as shown in Figure 1A, Fig. 2 and Fig. 3, the helical spring 3 is in the state of more expanding than nature, across input side
A part that is, sleeve 6 of part 1 are with a part for exporting sidepiece part 2 that is, the periphery of the respective opposite end of output shaft 8
Winding.Interval between the sleeve 6 and the respective opposed faces of output shaft 8 is set to the broad-ruler of the section of helical spring 3
95% or less very little A (referring to fig. 4).Moreover, forming oriented radial outside in the end by input side of helical spring 3 and extending
And the hook portion 3a engaged as described later with control gear 4.
As shown in Figure 1A, Fig. 2 and Fig. 3, the control gear 4 with can mode free to slide be sheathed on sleeve 6
The periphery of small diameter portion is operated by gear to the outside engaged with the control gear 4 (diagram is omitted), thus can
The state of rotation and restrained without being switched between revolvable state.In the end face by outlet side of the control gear 4,
It is provided with the countersink region 4a of the end by input side of receiving helical spring 3.Moreover, being provided in countersink region 4a in outlet side
End face forms the axial groove 4b of opening, inserted with the hook portion 3a of helical spring 3 in axial groove 4b.
The spring clutch is above structure, is provided if inputting in the state of controlling gear 4 and can rotate to input shaft 5
The torque (driving force) in direction (direction opposite with the take-up direction in the case where the helical spring 3 from input side), makes defeated
Enter axis 5 to rotate integrally with sleeve 6, then 3 undergauge of helical spring, fastens sleeve 6 and output shaft 8, thus input shaft 5 and set
The rotation of cylinder 6 is transmitted to output shaft 8.That is, implementing the rotation transmitting from input sidepiece part 1 to output sidepiece part 2.In turn, from defeated
The output gear 10 of sidepiece part 2 transmits driving force to driven member out.In addition, at this point, helical spring 3 also with sleeve 6 and defeated
Shaft 8 rotates integrally, therefore the side of the axial groove 4b of the hook portion 3a pressing control gear 4 of helical spring 3, makes to control gear 4
Rotation.
Moreover, when just being rotated as described above from input sidepiece part 1 to the output transmitting of sidepiece part 2, if about by control gear 4
Beam and cannot rotate, then become relatively controlling gear 4 using its axial groove 4b side by the hook portion 3a of helical spring 3 to
The state of the opposite direction pressing in the direction of rotation of input sidepiece part 1, therefore helical spring 3 is expanding, no longer to sleeve 6 and output
Axis 8 fastens, and the rotation for inputting sidepiece part 1 is not transmitted to output sidepiece part 2.Later, if making to control what the return of gear 4 can rotate
The power of state, then the hook portion 3a that relatively control gear 4 presses helical spring 3 disappears, therefore the undergauge again of helical spring 3, from
Sidepiece part 1 is inputted to the output transmitting rotation of sidepiece part 2.
On the other hand, it even if control gear 4 is in the state that can be rotated, is inputted and above-mentioned regulation side to input shaft 5
When torque round about rotates integrally input shaft 5 and sleeve 6, helical spring 3 also can be expanding, does not implement to 6 He of sleeve
Output shaft 8 fastens, therefore does not implement the rotation transmitting from input sidepiece part 1 to output sidepiece part 2, only inputs sidepiece part 1 and rotates
(idle running).
Here, in the spring clutch, the interval between sleeve 6 and the respective opposed faces of output shaft 8 is set to
95% or less the width dimensions A of the section of helical spring 3.Even if in the axial dimension for inputting sidepiece part 1, exporting sidepiece part 2
In the lower situation of precision, in the state of assembling clutch, in the opposed with input sidepiece part 1 of output sidepiece part 2
Opposed faces on the engagement shaft 9 that is arranged also be inserted in mode free to slide in the right with output sidepiece part 2 of input sidepiece part 1
The connecting hole 1a being arranged in the opposed faces set, the engaging protuberances 9c of engagement shaft 9 in the axial direction with the step surface 1b card of connecting hole 1a
It closes, limitation input sidepiece part 1 and exports sidepiece part 2 and relatively moved in the axial direction to the direction that is separated from each other, therefore sleeve 6 and defeated
Interval between the respective opposed faces of shaft 8 will not be bigger than the width dimensions A of the section of helical spring 3, the axis of helical spring 3
To a part of gap that can not be fallen between the opposed faces of central portion.Therefore, in use, it is impossible to generate because of spiral shell
The reduction for falling into caused torsion stiffness, responsiveness of rotation spring 3, can steadily use.
In addition, the engagement shaft 9 for exporting sidepiece part 2 is integrally formed by synthetic resin with output shaft 8, in engagement shaft 9
Front end side is arranged centre bore 9a and penetrates through from outer peripheral surface to the slit 9b of centre bore 9a, is thus set as that engagement shaft 9 can be made to hold
Flexible deformation of changing places simultaneously is inserted into the fastener of the connecting hole 1a of input sidepiece part 1, therefore can be in assembling clutch
When, efficiently implement input sidepiece part 1 and exports the combination operation of sidepiece part 2.
In addition, in the above-described embodiment, being provided with connecting hole 1a in input sidepiece part 1, being provided in output sidepiece part 2
Engagement shaft 9, but engagement shaft can also be set in the opposed faces opposed with output sidepiece part of input sidepiece part in contrast,
Connecting hole is set in the opposed faces opposed with input sidepiece part of output sidepiece part, the engaging protuberances and connecting hole of the engagement shaft
Inner surface engage in the axial direction.
In addition, connecting hole can be not necessarily two layers of hole as embodiment, as long as being formed as the engaging for engagement shaft
Protrusion engages in the axial direction.
Additionally, it is preferred that being, as shown in embodiment, engagement shaft is set as synthetic resin system, and centre bore and slit is arranged, if
It is set to fastener, but can also centre bore be only set or is provided only on the axial groove of front end face and outer peripheral surface formation opening.
On the other hand, engagement shaft can not be also set as to fastener, and be set as such as flowering structure, engagement shaft is another relative to output shaft
Outer formation after inserting engagement shaft and input shaft from the input side of sleeve, will be blocked when assembling clutch using screw etc.
Sympodium is in conjunction with output shaft.In this case, engagement shaft and output shaft can be set as made of metal.
In addition, helical spring is not limited to as embodiment the helical spring for having the tetragonal section of chamfering,
Also it is able to use the helical spring etc. of circular section, falls into input sidepiece part and output side to be reliably prevented helical spring
Gap between the respective opposed faces of part preferably using a face in polygonal cross-section and inputs sidepiece part and output
The helical spring of sidepiece part contact, and the chamfering of the helical spring is taken into account, it, will be defeated preferably as embodiment
Enter that the interval between sidepiece part and the respective opposed faces for exporting sidepiece part is set as helical spring with input sidepiece part and defeated
95% or less the width dimensions of the contact surface of sidepiece part contact out.
In addition, in embodiments, the outlet side of helical spring 3 is wound in output shaft 8 up to end, however, it is also possible to
It is set on output shaft and inputs the axial groove that side end face forms opening, is formed in the end of helical spring outlet side to radial direction
The hook portion of the outlet side of the helical spring, is inserted in the axial groove of output shaft, thus in helical spring by the hook portion that inside extends
When undergauge and expanding, the hook portion of outlet side engages with output shaft, so as to more reliably implement the tight of helical spring
Gu and the releasing to the tightening state.
Claims (9)
1. a kind of spring clutch, has: input sidepiece part and output sidepiece part, they are matched with the state rotated around same axle center
And if the respective end for being formed on the outer periphery barrel surface is opposed in the axial direction each other；And helical spring, across described defeated
Enter sidepiece part and winds with exporting the periphery of the respective opposite end of sidepiece part, the input sidepiece part and output sidepiece part
Interval between respective opposed faces is set smaller than the width dimensions of the section of the helical spring,
The spring clutch is characterized in that,
In the center of the input sidepiece part and one of the respective opposed faces for exporting sidepiece part, it is arranged and axially extends
Circular connecting hole, in the center of the other of the respective opposed faces of the input sidepiece part and output sidepiece part, setting
With can mode free to slide be inserted in the engagement shaft of the connecting hole, the engagement shaft has from its outer circumferential radial outside
Engaging protuberances outstanding, the engaging protuberances of the engagement shaft engage in the axial direction with the inner surface of the connecting hole, thus limit
The input sidepiece part and the output sidepiece part relative movement to the direction being separated from each other in the axial direction.
2. spring clutch according to claim 1, which is characterized in that
The connecting hole is to be formed with path hole portion in open side and be formed with big bigger than the path hole portion of diameter in inboard
Two layers of hole of diameter hole portion, the engaging protuberances of the engagement shaft are in the axial direction between the path hole portion of the connecting hole and major diameter hole portion
Step surface it is opposed.
3. spring clutch according to claim 1 or 2, which is characterized in that
The engagement shaft is formed by synthetic resin.
4. spring clutch according to claim 1 or 2, which is characterized in that
It is provided in the engagement shaft and forms opening in its front end face in the axial groove that its front end face and outer peripheral surface form opening
At least one of centre bore.
5. spring clutch according to claim 1 or 2, which is characterized in that
The helical spring is that section shape is polygon and one of them face and the input sidepiece part and output side
The component of part contact, the interval between the input sidepiece part and the respective opposed faces for exporting sidepiece part are set to the spiral shell
Revolve 95% or less with the width dimensions for the contact surface for inputting sidepiece part and outlet side component contact of spring.
6. spring clutch according to claim 3, which is characterized in that
It is provided in the engagement shaft and forms opening in its front end face in the axial groove that its front end face and outer peripheral surface form opening
At least one of centre bore.
7. spring clutch according to claim 3, which is characterized in that
The helical spring is that section shape is polygon and one of them face and the input sidepiece part and output side
The component of part contact, the interval between the input sidepiece part and the respective opposed faces for exporting sidepiece part are set to the spiral shell
Revolve 95% or less with the width dimensions for the contact surface for inputting sidepiece part and outlet side component contact of spring.
8. spring clutch according to claim 4, which is characterized in that
The helical spring is that section shape is polygon and one of them face and the input sidepiece part and output side
The component of part contact, the interval between the input sidepiece part and the respective opposed faces for exporting sidepiece part are set to the spiral shell
Revolve 95% or less with the width dimensions for the contact surface for inputting sidepiece part and outlet side component contact of spring.
9. spring clutch according to claim 6, which is characterized in that
The helical spring is that section shape is polygon and one of them face and the input sidepiece part and output side
The component of part contact, the interval between the input sidepiece part and the respective opposed faces for exporting sidepiece part are set to the spiral shell
Revolve 95% or less with the width dimensions for the contact surface for inputting sidepiece part and outlet side component contact of spring.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2017-083269 | 2017-04-20 | ||
| JP2017083269A JP2018179246A (en) | 2017-04-20 | 2017-04-20 | Spring clutch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208381146U true CN208381146U (en) | 2019-01-15 |
Family
ID=64281729
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820569364.5U Expired - Fee Related CN208381146U (en) | 2017-04-20 | 2018-04-20 | spring clutch |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP2018179246A (en) |
| CN (1) | CN208381146U (en) |
-
2017
- 2017-04-20 JP JP2017083269A patent/JP2018179246A/en active Pending
-
2018
- 2018-04-20 CN CN201820569364.5U patent/CN208381146U/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JP2018179246A (en) | 2018-11-15 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP4732207B2 (en) | Actuator | |
| US6222293B1 (en) | Starter | |
| CN104976249B (en) | Ratcheting one-way clutch | |
| JP2009264469A (en) | Automatic speed reducing ratio change-over device | |
| EP3033941A1 (en) | Dual-bearing reel | |
| CN208381146U (en) | spring clutch | |
| US20180201487A1 (en) | Self-Engaging Clutch | |
| CN108684621A (en) | It is a kind of can quickly take-up fishing line reel | |
| JP6791508B2 (en) | Solenoid valve | |
| JP2005155858A (en) | Gear unit for miniature motor | |
| CN208523577U (en) | It is a kind of can quickly take-up fishing line reel | |
| JP2008290593A (en) | Steering angle ratio variable steering device | |
| CN210686842U (en) | One-way damping structure and adjusting assembly comprising same | |
| US4715239A (en) | Engine starter gearing | |
| JP2008018195A (en) | Spiral spring mechanism and spiral spring drive unit | |
| JP7003537B2 (en) | Motor with reducer | |
| JPH09112568A (en) | Torque limiter and clutch | |
| CN208951147U (en) | Spring clutch | |
| US3421588A (en) | Variable pitch propellers for motor driven devices | |
| WO2011040334A1 (en) | Reverse-input shutoff clutch | |
| JP4857215B2 (en) | Driving force forward / reverse switching device | |
| US2523134A (en) | Fishing reel | |
| JP2007303672A (en) | Driving force transmission control device | |
| CN201016383Y (en) | Power tool and speed-shifting mechanism thereof | |
| CN212690992U (en) | Valve element driving device |
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: 20190115 Termination date: 20210420 |