CN216494813U - Rotary telescopic device - Google Patents
Rotary telescopic device Download PDFInfo
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- CN216494813U CN216494813U CN202220090059.4U CN202220090059U CN216494813U CN 216494813 U CN216494813 U CN 216494813U CN 202220090059 U CN202220090059 U CN 202220090059U CN 216494813 U CN216494813 U CN 216494813U
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Abstract
The utility model provides a rotary telescopic device which comprises a power source, a rotary transmission part and an output end, wherein the power source is matched with the rotary transmission part, the rotary transmission part drives the output end to rotate under the driving of the power source, the rotary telescopic device comprises a telescopic transmission part, the power source is matched with the telescopic transmission part, the telescopic transmission part comprises a main one-way transmission device, when the power source outputs forward rotation, the main one-way transmission device prevents the telescopic transmission part from transmitting, and when the power source outputs reverse rotation, the telescopic transmission part drives the output end to extend or retract under the driving of the power source. The power source of the rotary telescopic device drives the rotary transmission part and the telescopic transmission part to respectively realize rotation and stretching of the output end, the power source is switched between a positive rotation output state and a reverse rotation output state, and the main one-way transmission device in the telescopic transmission part is used for controlling whether the output end stretches under the action of the telescopic transmission part or not so as to realize that a single motor meets the requirements of stretching and rotating.
Description
Technical Field
The utility model relates to a rotary telescopic device.
Background
When the existing automatic cooker is used for cooking, a heating part of the automatic cooker can only heat a part of a cooker body of the automatic cooker due to the limitation of a heating structure, so that the local temperature of the cooker body is too high, and the food material is easily burnt. In order to avoid burning of food materials, the pot body needs to be continuously rotated in the process of cooling down to heat the food materials with slightly low temperature, so that burning caused by overhigh temperature of local food materials is avoided. The automatic machine of cooking that has now adopts drive shaft fixed connection in the pot body for realizing that the pot body can rotate, so, can't dismantle between the pot body and the drive shaft, brings inconvenience for the washing of the pot body.
At present, for the scenes needing rotation and expansion, a plurality of power sources are generally directly used for controlling rotation and expansion respectively. When a plurality of power sources are adopted to realize control, the cost is also improved along with the increase of the number of parts, the disassembly, the assembly and the maintenance of the device are more complicated, and the large-scale use is not facilitated.
In addition, a plurality of power sources are used for control, so that a conflict necessarily exists in the control logic, and at the moment, an additional control unit needs to be arranged to enable the control logic to be closer to the actual use requirement, so that a more complex system structure is brought.
Therefore, a rotary telescopic device with a small number of parts, a small overall size, convenient control and stable transmission is urgently needed.
SUMMERY OF THE UTILITY MODEL
The utility model aims to overcome the defects of more parts, larger overall size and unstable transmission of a rotary telescopic device in the prior art, and provides the rotary telescopic device.
The utility model solves the technical problems through the following technical scheme:
the utility model provides a rotatory telescoping device, includes power supply, rotatory transmission portion and output, the power supply with the cooperation of rotatory transmission portion, rotatory transmission portion is in drive under the drive of power supply the output is rotatory, rotatory telescoping device still includes flexible transmission portion, the power supply with the cooperation of flexible transmission portion, flexible transmission portion still includes main one way transmission, works as when power supply output forward rotates, main one way transmission prevents flexible transmission portion transmits, works as when power supply output antiport, flexible transmission portion is in drive under the drive of power supply the output stretches out or retracts.
In the utility model, the power source drives the rotary transmission part and the telescopic transmission part to respectively realize the rotation and the extension of the output end, when in use, the power source is switched between a positive rotation output state and a negative rotation output state, and the main one-way transmission device in the telescopic transmission part is used for controlling whether the output end extends and contracts under the transmission action of the telescopic transmission part, so that the single motor can simultaneously meet the requirements of extension and rotation, and the rotary extension device controlled by the single motor is provided.
Preferably, the main one-way transmission device comprises a main ratchet structure, the main ratchet structure comprises a main ratchet wheel positioned at an inner ring and a main pawl positioned at an outer ring, the outer side surface of the main ratchet wheel is provided with a convex main transmission block, the main pawl and the main transmission block are opposite in direction, and the main ratchet structure only realizes transmission along a single clockwise direction.
According to the utility model, through the structural form, the main ratchet wheel structure is adopted as the main one-way transmission device, and when the main ratchet wheel rotates forwards relative to the main pawl, the main pawl is meshed with the main transmission block and the transmission effect is realized together; when the main ratchet wheel rotates reversely relative to the main pawl, the main pawl rotates relative to the transmission block, so that the transmission effect cannot be realized.
Preferably, a main elastic sheet is further arranged between the main transmission block and the main ratchet wheel, and the main transmission block always abuts against the main pawl under the thrust action of the main elastic sheet.
In the utility model, through the structural form, the main transmission block can be immediately pushed to the next main pawl when the main pawls are disengaged, and the one-way transmission of the whole ratchet structure is not influenced.
Preferably, the rotation transmission part includes a sub one-way transmission device, when the power source outputs a forward rotation, the rotation transmission part drives the output end to rotate under the driving of the power source, and when the power source outputs a reverse rotation, the sub one-way rotation stopping device prevents the rotation transmission part from performing transmission.
In the utility model, the power source drives the rotary transmission part and the telescopic transmission part to respectively realize the rotation and the extension of the output end, when in use, the power source is switched between a positive rotation output state and a negative rotation output state, and the auxiliary one-way transmission device in the rotary transmission part is used for controlling the output end to stop rotating when the output end extends and contracts under the transmission action of the telescopic transmission part, so that on the basis of realizing that a single motor simultaneously meets the requirements of extension and rotation, the transmission mode of non-extension during rotation and non-rotation during extension is realized, the abrasion of parts is reduced, and the service life is prolonged.
Preferably, the secondary unidirectional transmission device comprises a secondary ratchet structure, the secondary ratchet structure comprises a secondary ratchet wheel positioned at an inner ring and a secondary pawl positioned at an outer ring, the outer side surface of the secondary ratchet wheel is provided with a convex secondary transmission block, the orientation of the secondary pawl is opposite to that of the secondary transmission block, and the secondary ratchet structure only realizes transmission in a single clockwise direction.
Preferably, an auxiliary spring plate is further arranged between the auxiliary transmission block and the auxiliary ratchet wheel, and the auxiliary transmission block always abuts against the auxiliary pawl under the thrust action of the auxiliary spring plate.
Preferably, the telescopic transmission part is provided with a protruding part, the outer surface of the output end is provided with an inclined surface, the protruding part always abuts against the inclined surface, and the protruding part is fixed in a plane perpendicular to the telescopic direction of the output end.
In the utility model, through the structural form, the inclined surface is arranged on the outer surface of the output end, the protruding part always abuts against the inclined surface, and the protruding part is limited in a plane perpendicular to the telescopic direction of the output end, so that the protruding part does not displace in the telescopic direction during rotation, and the output end moves relative to the protruding part in the telescopic direction, so that the telescopic action of the output end is realized.
Preferably, the telescopic transmission part is connected with the output end through a worm gear structure or a crank rocker mechanism.
In the utility model, through the structural form, the input of the rotation form is converted into the output of the telescopic form by utilizing a worm gear structure or a crank rocker mechanism in the telescopic transmission part.
Preferably, the rotary telescopic device further comprises an elastic component, the elastic component abuts against the output end, the elastic direction of the elastic component is consistent with the telescopic direction of the output end, and after the output end extends out or retracts, the output end returns to the initial position under the elastic force provided by the elastic component.
In the utility model, through the structure, the output end can be timely restored to the initial position after being extended or retracted by utilizing the elasticity provided by the elastic component.
Preferably, the rotary transmission part further comprises a rotating shaft, the rotating shaft is connected with the output end in a matching manner, and the rotating shaft and the output end are coaxially arranged.
In the utility model, through the structural form, the rotary transmission part realizes transmission through the rotating shaft coaxial with the output end, the transmission structure is simplified as much as possible, and the whole volume of the rotary telescopic device is reduced.
Preferably, the telescopic transmission part and the rotary transmission part are located in the same shell, and the telescopic transmission part and the rotary transmission part are arranged in the shell in a staggered mode at different heights and/or horizontal positions.
According to the utility model, through the structural form, the telescopic transmission parts and the rotary transmission parts can be arranged in a staggered mode to form a compact layout on the premise that the telescopic transmission parts and the rotary transmission parts do not interfere with each other, so that the space utilization rate in the shell is as high as possible, and the overall size of the rotary telescopic device is indirectly reduced.
The positive progress effects of the utility model are as follows: this rotatory telescoping device realizes the rotation and the flexible of output respectively through power supply drive rotation transmission portion and flexible transmission portion, switches the power supply between corotation output state and reversal output state during the use to whether control the output through the main unidirectional transmission device in the flexible transmission portion and stretch out and draw back under the transmission effect of flexible transmission portion, with the needs that realize single motor and satisfy simultaneously flexible and rotatory, provide a rotatory telescoping device by single motor control.
Drawings
Fig. 1 is a schematic overall structure diagram of a rotary telescopic device according to a preferred embodiment of the present invention.
Fig. 2 is an exploded view of the overall structure of the rotary telescopic device according to the preferred embodiment of the present invention.
Fig. 3 is a sectional view of a rotary telescopic device according to a preferred embodiment of the present invention.
FIG. 4 is a schematic view of the transmission direction of the rotary telescopic device of the preferred embodiment of the present invention when the power source outputs a forward rotation.
FIG. 5 is a schematic view of the transmission direction of the rotary telescopic device of the preferred embodiment of the present invention when the power source outputs reverse rotation.
Fig. 6 is a schematic structural view of the rotation telescopic device according to the preferred embodiment of the present invention, wherein the telescopic transmission portion is engaged with the rotation shaft.
Fig. 7 is a schematic structural view of the telescopic driving wheel of the rotary telescopic device according to the preferred embodiment of the present invention.
Fig. 8 is a schematic structural view of a guide sleeve of a rotary telescopic device according to a preferred embodiment of the present invention.
Description of reference numerals:
rotary telescopic device 100
Motor 1
Rotating wheel 11
Shaft sleeve 2
Rotation transmission part 4
Telescopic driving wheel 5
Detailed Description
The present invention will be more clearly and completely described below with reference to the accompanying drawings.
As shown in fig. 1-3, the present embodiment provides a rotary telescoping device 100 including a power source and an output. In this embodiment, the power source is a motor 1, the motor 1 outputs through a rotating wheel 11, and the output end is a shaft sleeve 2. The sleeve 2 cooperates with a part of the device driven by the rotary telescopic device 100 and drives it in rotation and/or in extension and retraction.
In this embodiment, the rotary telescopic device 100 further includes a rotary transmission part 3 and a telescopic transmission part 4. The rotary transmission part 3 and the telescopic transmission part 4 are respectively matched with a rotating wheel 11 of the motor 1, the rotary transmission part 3 drives the shaft sleeve 2 to rotate under the driving of the motor 1, and the telescopic transmission part 4 drives the shaft sleeve 2 to stretch under the driving of the motor 1. The telescopic transmission part 4 also comprises a main one-way transmission device. When the motor 1 outputs positive rotation, the main unidirectional transmission device prevents the telescopic transmission part 4 from transmitting; when the motor 1 outputs reverse rotation, the telescopic transmission part 4 drives the shaft sleeve 2 to extend or retract under the driving of the motor 1.
In the present embodiment, the motor 1 drives the rotation transmission part 3 and the telescopic transmission part 4 to respectively realize rotation and telescopic of the sleeve 2. When the telescopic device is used, the motor 1 is switched between a forward rotation output state and a reverse rotation output state, and whether the shaft sleeve 2 is telescopic under the transmission action of the telescopic transmission part 4 is controlled through the main one-way transmission device in the telescopic transmission part 4, so that the single motor 1 can meet the requirements of telescopic and rotary at the same time, and the rotary telescopic device 100 controlled by the single motor 1 is provided.
Specifically, as shown in fig. 1 to 5, the main unidirectional transmission device includes a main ratchet wheel 311 structure 31, the main ratchet wheel 311 structure 31 includes a main ratchet wheel 311 located at an inner circle and a main pawl 312 located at an outer circle, an outer side surface of the main ratchet wheel 311 has a convex main transmission block 313, the main pawl 312 is opposite to the orientation of the main transmission block 313, and the main ratchet wheel 311 structure 31 only realizes transmission in a single clockwise direction.
In the embodiment, the main ratchet wheel 311 structure 31 is adopted as a main one-way transmission device, when the main ratchet wheel 311 rotates in a forward direction relative to the main pawl 312, the main pawl 312 is meshed with the main transmission block 313 and jointly realizes a transmission effect; when the main ratchet 311 rotates reversely relative to the main pawl 312, the main pawl 312 rotates relative to the transmission block so that the transmission effect cannot be achieved.
As shown in fig. 1-5, the main ratchet 311 structure 31 in this embodiment is a ratchet structure comprising pawls extending in a single direction, while in other embodiments, the main ratchet 311 structure 31 may be in the form of friction blocks or friction bars contacting with pulleys, etc. to realize single-hour transmission.
As shown in fig. 4-5, a main striking plate 314 is further disposed between the main transmission block 313 and the main ratchet wheel 311, and the main transmission block 313 always abuts against the main pawl 312 under the pushing force of the main striking plate 314. The main spring 314 in this embodiment keeps applying an outward pushing force to the main driving block 313, so that the main driving block 313 can be immediately pushed onto the next main pawl 312 when the main pawl 312 is disengaged, without affecting the one-way transmission of the overall main ratchet 311 structure 31.
It should be understood by those skilled in the art that the main resilient piece 314 is used as a component for providing the outward pushing force in the present embodiment, and in other embodiments, the same effect can be achieved by changing the connection manner of the main transmission block 313 and the ratchet, or adding an elastic structure such as a torsion spring. In the actual design and manufacturing process, those skilled in the art should select the most appropriate structure as the component providing the thrust force by combining various factors such as cost, volume, life, etc.
As shown in fig. 1 to 5, the rotation transmission part 3 includes a sub one-way transmission device. When the motor 1 outputs forward rotation, the rotary transmission part 3 drives the shaft sleeve 2 to rotate under the drive of the motor 1, and when the motor 1 outputs reverse rotation, the auxiliary unidirectional rotation stopping device prevents the rotary transmission part 3 from transmitting.
In this embodiment, the motor 1 drives the rotary transmission part 3 and the telescopic transmission part 4 to respectively realize rotation and extension of the shaft sleeve 2, the motor 1 is switched between a forward rotation output state and a reverse rotation output state during use, the auxiliary one-way transmission device in the rotary transmission part 3 controls the shaft sleeve 2 to stop rotating when extending and retracting under the transmission action of the telescopic transmission part 4, on the basis that the single motor 1 meets the requirements of extension and rotation at the same time, the transmission modes of non-extension during rotation and non-rotation during extension and retraction are realized, the abrasion of components is reduced, and the service life is prolonged.
Specifically, as shown in fig. 1-5, the secondary unidirectional transmission device comprises a secondary ratchet wheel 411 structure 41, the secondary ratchet wheel 411 structure 41 comprises a secondary ratchet wheel 411 positioned at the inner ring and a secondary pawl 412 positioned at the outer ring, the outer side surface of the secondary ratchet wheel 411 is provided with a convex secondary transmission block 413, the orientation of the secondary pawl 412 is opposite to that of the secondary transmission block 413, and the secondary ratchet wheel 411 structure 41 only realizes transmission in a single clockwise direction. An auxiliary spring piece 414 is arranged between the auxiliary transmission block 413 and the auxiliary ratchet wheel 411, and the auxiliary transmission block 413 is always abutted against the auxiliary pawl 412 under the thrust action of the auxiliary spring piece 414. The secondary spring 414 in this embodiment enables the secondary transmission block 413 to be pushed onto the next secondary pawl 412 immediately when the secondary pawl 412 is disengaged, without affecting the unidirectional transmission of the overall secondary ratchet 411 structure 41.
In the present embodiment, since the primary pawl 312 and the secondary pawl 412 are both directly or indirectly engaged with the rotating wheel 11 of the motor 1, the secondary ratchet wheel 411 structure 41 is entirely mirror symmetrical to the primary ratchet wheel 311 structure 31, i.e. the primary ratchet wheel 311 structure 31 and the secondary ratchet wheel 411 structure 41 have opposite transmission directions. Therefore, as shown in fig. 1 to 5, in the present embodiment, the secondary ratchet 411 structure 41 includes a secondary ratchet 411, a secondary pawl 412, a secondary transmission block 413 and a secondary spring 414.
However, in other embodiments of the present invention, the rotating wheel 11 of the motor 1 may be directly driven to the main ratchet wheel 311 and the sub ratchet wheel 411 inside the ratchet structure, thereby eliminating the negative effects caused by the difference between the two structures. For example, the transmission direction of the main ratchet 311 structure 31 is motor 1 rotating wheel 11-main pawl 312-main ratchet 311 in sequence, and the transmission direction of the auxiliary ratchet 411 structure 41 is motor 1 rotating wheel 11-auxiliary ratchet 411-auxiliary pawl 412 in sequence, at this time, the main ratchet 311 structure 31 and the auxiliary ratchet 411 structure 41 have the same transmission direction, and the structures can also adopt the same specification, so that the design and the assembly are convenient.
Although the main unidirectional transmission and the auxiliary unidirectional transmission are used in the present embodiment to realize the transmission switching of the two directional outputs, in other embodiments, the auxiliary unidirectional transmission may be omitted as appropriate. At this time, the rotary transmission part 3 is always matched with the motor 1 and realizes the real-time transmission function. That is, the sleeve 2 is kept rotated by the rotation transmission section 3 regardless of whether the motor 1 is rotating in the normal direction or in the reverse direction.
Specifically, in the usage scenario of the present embodiment, the sleeve 2 has an inner hexagonal groove 21 inside for abutting against the external abutting portion of the rotary telescopic device 100, and at this time, if the sleeve 2 needs to be telescopic, the rotation needs to be stopped to reduce the resistance and reduce the wear. In the use scenario of other embodiments, the shaft sleeve 2 may be smoothly extended without stopping rotation. Therefore, a person skilled in the art can choose whether to add the secondary unidirectional transmission device according to the movement mode of the shaft sleeve 2 and the specific structure of the rotary transmission part 3, but both related schemes should fall within the protection scope of the present invention.
As shown in fig. 1 to 8, in the present embodiment, the telescopic transmission part 4 has a telescopic driving wheel 5, and a projecting part 51 is provided inside the telescopic driving wheel 5. In addition, the guide sleeve 6 is arranged on the outer side of the shaft sleeve 2, the inclined surface 61 is arranged on the outer side surface of the guide sleeve 6, the protruding part 51 is always abutted against the inclined surface 61, and the protruding part 51 is fixed in the plane vertical to the stretching direction of the output end.
In the present embodiment, the inclined surface 61 is provided on the outer surface of the sleeve 2, and since the protrusion 51 is always abutted against the inclined surface 61 and the protrusion 51 is defined in the plane perpendicular to the extending and contracting direction of the sleeve 2, the protrusion 51 is not displaced in the extending and contracting direction when rotating, and relatively, the sleeve 2 moves relative to the protrusion 51 in the extending and contracting direction, thereby achieving the extending and contracting of the sleeve 2.
In other embodiments, the outer surface of the sleeve 2 may be provided with two parallel inclined surfaces 61, and the protrusion 51 is accommodated between the two inclined surfaces 61, so that the inclined surfaces 61 can achieve better guiding effect.
In the present embodiment, a gear set is used to form the telescopic transmission part 4, but in other embodiments, the telescopic transmission part 4 may also include a worm and gear structure or a crank and rocker mechanism connected to the shaft sleeve 2 to achieve the function of telescopic transmission. Through the structure form, the input of the rotation form can be converted into the output of the telescopic form by utilizing a worm gear structure or a crank rocker mechanism in the telescopic transmission part 4, so as to realize the same or similar effect.
As shown in fig. 1-8, the rotary telescoping device 100 also includes a resilient member. In this embodiment, the elastic component is a spring 7, the spring 7 abuts against the shaft sleeve 2, the elastic direction of the spring 7 is consistent with the telescopic direction of the shaft sleeve 2, and after the shaft sleeve 2 extends or retracts, the shaft sleeve 2 returns to the initial position under the elastic force provided by the spring 7.
In the embodiment, the elastic force provided by the spring 7 is utilized to enable the shaft sleeve 2 to return to the initial position in time after extending or retracting, so that the shaft sleeve can extend or retract conveniently in the next rotation transmission process.
Specifically, in the present embodiment, the initial position of the sleeve 2 is in an extended state, and the spring 7 is in a compressed state, so as to push the sleeve 2 outward. When the motor 1 outputs a reverse rotation, the sleeve 2 retracts under the force of the telescopic transmission 4 and further compresses the spring 7. Further, when the motor 1 is changed from the output reverse rotation to the output forward rotation, the boss 2 is no longer subjected to the retracting force provided by the telescopic transmission 4. At this time, the sleeve 2 is extended again by the elastic force of the spring 7 in the compressed state, and is restored to the original state.
It should be noted that in the initial state of the present embodiment, the spring 7 is compressed and the sleeve 2 is in the extended position, while in other embodiments, different telescoping functions may be achieved by modifying the tension or compression state of the spring 7, the extended or retracted state of the sleeve 2. For example, the shaft sleeve 2 is initially in a retracted state, and after being extended under the action of the telescopic transmission part 4, the automatic resetting process is completed under the action of the elastic force of the elastic component.
As shown in fig. 1-3, the rotation transmission part 3 further includes a rotation shaft 8, the rotation shaft 8 is connected with the shaft sleeve 2 in a matching manner, and the rotation shaft 8 is coaxial with the shaft sleeve 2.
Specifically, in the present embodiment, the rotation transmission portion 3 is configured to transmit the rotation through the rotating shaft 8 coaxial with the sleeve 2, so that the transmission structure can be simplified as much as possible. In particular, the reduction of the transmission structure in the horizontal direction can directly reduce the overall volume of the rotary telescopic device 100.
In the present embodiment, the rotation transmission portion 3 is transmitted to the shaft sleeve 2 through the rotating shaft 8, but in other embodiments of the present invention, the output shaft of the motor 1 may be directly used as the rotating shaft 8 in the rotation transmission portion 3.
Specifically, in other embodiments, in order to reduce the volume of the rotation transmission part 3, the rotation transmission part 3 is simplified into a coaxial transmission structure, that is, the output shaft of the motor 1 is directly connected with the shaft sleeve 2 in a matching manner, so as to realize rotation transmission. In the above embodiment, in consideration of the spatial structure, the auxiliary unidirectional transmission device is not additionally arranged in the rotary transmission part 3, so that the number of parts is reduced on the premise of ensuring the transmission effect, and the disassembly, assembly and maintenance are facilitated.
As shown in fig. 1 to 3, the telescopic transmission part 4 and the rotary transmission part 3 are located inside the same housing 110, and the telescopic transmission part 4 and the rotary transmission part 3 are arranged at different heights and/or horizontal positions inside the housing 110 in a staggered manner.
Specifically, the gears and/or the shafts 8 of the telescopic transmission part 4 in this embodiment are disposed to avoid the gears and/or the shafts 8 of the rotary transmission part 3, on one hand, to avoid mutual interference between the gears and/or the shafts and to avoid interference between the gears and/or the shafts, on the other hand, to arrange the horizontally arranged gears and the vertically arranged shafts 8 inside the housing 110 in a staggered manner on the premise that the telescopic transmission part 4 and the rotary transmission part 3 do not interfere with each other, so as to fully utilize the space inside the housing 110 and to enable the space utilization rate to be as high as possible. The overall volume of the rotary telescopic device 100 is also indirectly reduced without otherwise being changed.
While specific embodiments of the utility model have been described above, it will be appreciated by those skilled in the art that this is by way of example only, and that the scope of the utility model is defined by the appended claims. Various changes and modifications to these embodiments may be made by those skilled in the art without departing from the spirit and scope of the utility model, and these changes and modifications are within the scope of the utility model.
Claims (11)
1. The utility model provides a rotary telescopic device, includes power supply, rotary transmission portion and output, the power supply with the cooperation of rotary transmission portion, rotary transmission portion is in drive under the drive of power supply the output is rotatory, a serial communication port, rotary telescopic device still includes telescopic transmission portion, the power supply with the cooperation of telescopic transmission portion, telescopic transmission portion still includes main one way transmission, works as when power supply output forward rotates, main one way transmission prevents telescopic transmission portion transmits, works as when power supply output antiport, telescopic transmission portion is in drive under the drive of power supply the output stretches out or retracts.
2. The rotary retraction device according to claim 1, wherein the primary unidirectional drive comprises a primary ratchet arrangement comprising a primary ratchet at an inner circumference and a primary pawl at an outer circumference, the outer side surface of the primary ratchet having a protruding primary drive block, the primary pawl facing opposite the primary drive block, the primary ratchet arrangement effecting drive in only a single clockwise direction.
3. The rotary telescopic device as claimed in claim 2, wherein a main spring plate is further arranged between the main transmission block and the main ratchet wheel, and the main transmission block always abuts against the main pawl under the thrust action of the main spring plate.
4. The rotary telescopic device as claimed in claim 1, wherein the rotary transmission part includes a sub one-way transmission device, the rotary transmission part rotates the output end under the driving of the power source when the power source outputs a forward rotation, and the sub one-way rotation stopping device prevents the rotary transmission part from transmitting when the power source outputs a reverse rotation.
5. The rotary extension and retraction device according to claim 4, wherein the secondary unidirectional transmission comprises a secondary ratchet structure comprising a secondary ratchet at an inner periphery and a secondary pawl at an outer periphery, an outer side surface of the secondary ratchet having a protruding secondary transmission block, the secondary pawl facing opposite the secondary transmission block, the secondary ratchet structure effecting transmission in only a single clockwise direction.
6. The rotary telescopic device as claimed in claim 5, wherein an auxiliary spring is further provided between the auxiliary transmission block and the auxiliary ratchet wheel, and the auxiliary transmission block is always abutted against the auxiliary pawl under the thrust action of the auxiliary spring.
7. The rotary telescopic device according to claim 1, wherein the telescopic transmission part has a projection, and an outer surface of the output end has a slope, the projection always abuts against the slope, and the projection is fixed in a plane perpendicular to a telescopic direction of the output end.
8. A rotary telescopic device according to claim 1, wherein the telescopic transmission is connected to the output by means of a worm gear or crank and rocker mechanism.
9. The rotary telescopic device according to claim 1, further comprising an elastic member abutting against the output end, wherein an elastic direction of the elastic member is the same as an expansion direction of the output end, and when the output end is extended or retracted, the output end is restored to an initial position under an elastic force provided by the elastic member.
10. The rotary telescopic device as claimed in claim 1, wherein the rotary transmission part further comprises a rotating shaft, the rotating shaft is connected with the output end in a matching manner, and the rotating shaft is arranged coaxially with the output end.
11. The rotary telescopic device according to claim 1, wherein the telescopic transmission part and the rotary transmission part are located in the same housing, and the telescopic transmission part and the rotary transmission part are staggered at different heights and/or horizontal positions in the housing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220090059.4U CN216494813U (en) | 2022-01-13 | 2022-01-13 | Rotary telescopic device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220090059.4U CN216494813U (en) | 2022-01-13 | 2022-01-13 | Rotary telescopic device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216494813U true CN216494813U (en) | 2022-05-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220090059.4U Active CN216494813U (en) | 2022-01-13 | 2022-01-13 | Rotary telescopic device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216494813U (en) |
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- 2022-01-13 CN CN202220090059.4U patent/CN216494813U/en active Active
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