CN213743180U - Net curtain folding and unfolding driving mechanism for invisible protective net - Google Patents
Net curtain folding and unfolding driving mechanism for invisible protective net Download PDFInfo
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- CN213743180U CN213743180U CN202022408602.4U CN202022408602U CN213743180U CN 213743180 U CN213743180 U CN 213743180U CN 202022408602 U CN202022408602 U CN 202022408602U CN 213743180 U CN213743180 U CN 213743180U
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- clutch
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- drum shaft
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Abstract
The utility model relates to a be used for stealthy for protection network net curtain take-up and exhibition actuating mechanism. The invisible protective net comprises a drum shaft and a power shaft, the net curtain folding and unfolding driving mechanism comprises a driven part of a clutch and a driving part of the clutch, the driven part of the clutch is connected with the power shaft, the driving part of the clutch is connected with the drum shaft, and torque on the power shaft is transmitted to the drum shaft when the driven part of the clutch is engaged with the driving part of the clutch; the driven portion of the clutch includes two outer friction discs; the active portion of the clutch includes an intermediate friction disc; the intermediate friction disk is clamped between the two outer friction disks; the outer friction disks are respectively contacted with the middle friction disk. The utility model discloses a friction disk in the middle of two outer friction disks come the centre gripping and utilize each outer friction disk to come transmission torque with the contact of middle friction disk respectively for the atress is balanced about the middle friction disk, reduces the vibration, and the torque transmission is more steady.
Description
Technical Field
The utility model relates to a be used for stealthy for protection network net curtain take-up and exhibition actuating mechanism.
Background
In the prior art, the invisible protection net installed on doorways, windows, ventilation openings, balconies and the like can reduce the influence of people on external lookout to the maximum extent on the basis of preventing theft and falling. And the invisible protective net is further improved by adopting the winding and unwinding technology. When needs use, expand the net curtain body, when not using, roll up the net curtain body to improve user's experience and feel. Like the invisible protection net disclosed in the chinese utility model patent specifications CN 210439937U and CN 210422414U, it can realize the expansion and furling of the net curtain body. In addition, the invisible protection net also discloses that the friction torque generated between the contact surfaces of the driving friction disc and the driven friction disc is used for transmitting the torque. However, the driven friction disc is stressed on one side, the stress is not balanced enough, vibration is easy to generate, and the smoothness of torque transmission is influenced.
Disclosure of Invention
An object of the utility model is to provide a be used for stealthy for protection network curtain to take up and expand actuating mechanism, this stealthy protection network includes reel axle and power shaft, this net curtain takes up and expands actuating mechanism includes the driven part of clutch and the initiative part of clutch, the driven part of this clutch is connected so that the driven part of clutch rotates with the power shaft, the initiative part of this clutch is connected so that the initiative part of clutch rotates with the reel axle together with the reel axle, the torque on this power shaft transmits to the reel axle when the driven part of clutch is engaged with the initiative part of clutch; the driven portion of the clutch includes two outer friction discs; the active portion of the clutch includes an intermediate friction disc; the intermediate friction disk is clamped between the two outer friction disks; the outer friction disks are respectively contacted with the middle friction disk.
The utility model discloses a friction disk in the middle of two outer friction disks come the centre gripping and utilize each outer friction disk to come transmission torque with the contact of middle friction disk respectively for the atress is balanced about the middle friction disk, reduces the vibration, and the torque transmission is more steady.
Drawings
Fig. 1 shows a front view of the present invention;
FIG. 2 shows a front view of the mandrel shaft and the driven portion of the clutch and the driving portion of the clutch thereon of the present invention;
FIG. 3 shows a cross-sectional view A-A of FIG. 2;
FIG. 4 shows an enlarged view of part B of FIG. 3;
figures 5 and 6 show perspective views from two different angles of the mandrel shaft and the driven part of the clutch and the driving part of the clutch according to the invention, respectively;
fig. 7 and 8 are perspective exploded views of the spool shaft and the driven part of the clutch and the driving part of the clutch at two different angles, respectively.
Reference numerals:
10 a spool shaft; 20 a power shaft; 30 outer friction disc, 301 bracket part, 302 contact part; 40 an intermediate friction disk; 50 hold down assembly, 501 bolt, 502 nut, 503 compression spring; 60 rolling bearings; 70 shaft sleeve; 80 a driven sprocket; 90 drive sprocket.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
A web curtain folding and unfolding drive mechanism for an invisible protection net as shown in fig. 1 to 8, the invisible protection net comprising a spool shaft 10 and a power shaft 20, the web curtain folding and unfolding drive mechanism comprising a driven part of a clutch and a driving part of the clutch, the driven part of the clutch being connected with the power shaft so that the driven part of the clutch rotates together with the power shaft, the driving part of the clutch being connected with the spool shaft so that the driving part of the clutch rotates together with the spool shaft, a torque on the power shaft 20 being transmitted to the spool shaft 10 when the driven part of the clutch is engaged with the driving part of the clutch;
the driven portion of the clutch comprises two outer friction discs 30;
the active part of the clutch comprises an intermediate friction disc 40;
the intermediate friction disk 40 is sandwiched between the two outer friction disks 30;
the outer friction plates 30 are in contact with the intermediate friction plate 40, and torque is transmitted by friction torque generated between contact surfaces of the outer friction plates 30 and the intermediate friction plate 40.
According to the technical scheme, the two outer-layer friction disks are used for clamping the middle friction disk, and the outer-layer friction disks are respectively contacted with the middle friction disk to transfer torque, so that the middle friction disk is stressed uniformly from top to bottom, vibration is reduced, and torque transmission is more stable.
The screen deployment drive mechanism further includes an adjustment mechanism for adjusting the pressure between each of the outer friction plates 30 and the intermediate friction plate 40.
In this embodiment, the pressure adjustment mechanism includes a compression assembly 50 for adjusting the axial distance between the two outer friction disks.
The hold-down assembly 50 has a plurality of sets;
the axes of the outer friction discs 30 and the intermediate friction discs 40 are coincident;
all the compression assemblies 50 are circumferentially spaced around the axis of the outer friction disc, and in particular, the multiple sets of compression assemblies 50 are circumferentially equally spaced around the axis of the outer friction disc 30; in the embodiment, 4 groups of pressing assemblies are shown in the figure, however, the number of the pressing assemblies is not limited to the number shown in the figure, and the number of the pressing assemblies can be more than 2 groups, 3 groups or 5 groups, for example;
each hold-down assembly 50 includes a bolt 501 and a nut 502;
the shaft of the bolt 501 penetrates through the two outer friction discs 30, the nut 502 is screwed with the shaft of the bolt 501, and the two outer friction discs 30 are clamped between the head of the bolt 501 and the nut 502.
A nut is threaded to adjust the pressure between the outer friction plates and the intermediate friction plate.
The adjusting mechanism disclosed by the technical scheme is simple in structure and convenient for adjusting pressure. And the multiple groups of pressing assemblies are distributed at intervals in the circumferential direction around the axis of the outer-layer friction disc, so that the design is reasonable.
In each of the pressing members 50, the nut 502 faces one of the outer friction disks 30, the head of the bolt 501 faces the other outer friction disk 30, the outer friction disk 30 facing the nut 502 is a first outer friction disk, and the outer friction disk 30 facing the head of the bolt 501 is a second outer friction disk;
each hold down assembly 50 further includes a compression spring 503 that is sleeved over the shaft of the bolt 501, the compression spring 503 being clamped between the nut 502 and the first outer friction disc, or the compression spring 503 being clamped between the head of the bolt 501 and the second outer friction disc.
According to the technical scheme, the springs are arranged to realize flexible connection between the outer friction disks and the middle friction disk, and slipping occurs during overload so as to protect parts (such as a driving motor and a net curtain body of an invisible protective net) from being damaged.
The first outer friction disk is located above the second outer friction disk. In this embodiment, as shown in fig. 4, there are a nut 502, a compression spring 503, a first outer friction disc (i.e., the outer friction disc 30 located above the middle friction disc in fig. 4), an intermediate friction disc 40, a second outer friction disc (i.e., the outer friction disc 30 located below the middle friction disc in fig. 4), and a head of a bolt 501 from top to bottom. One end of a compression spring 503 is propped against the nut 502, and the other end is propped against the first outer-layer friction disc; the head of the bolt 501 abuts the second outer friction disc.
The intermediate friction disk 40 is circumferentially fixed relative to the spool shaft 10 and sleeved outside the spool shaft 10;
the outer friction discs 30 are rotatably sleeved outside the spool shaft 10 relative to the spool shaft 10;
the axis of each outer friction disc 30, the axis of the intermediate friction disc 40 and the axis of the spool shaft 10 are coincident.
The intermediate friction disk 40 is movable in the axial direction of the spool shaft 10;
one of the outer friction disks 30 is axially fixed with respect to the spool shaft 10, and the other outer friction disk 30 is movable in the axial direction of the spool shaft 10. The technical scheme is that one outer friction disc can move along the axial direction of the spool shaft, so that the axial distance between the two outer friction discs is adjusted through the adjusting mechanism, and the pressure between each outer friction disc and the middle friction disc is adjusted.
The intermediate friction disk 40 is connected with the spool shaft 10 through a key;
a rolling bearing 60 is arranged between the outer-layer friction disc 30 which is axially fixed relative to the spool shaft and the spool shaft 10, the inner ring of the rolling bearing 60 is sleeved outside the spool shaft 10, and the outer-layer friction disc 30 which is axially fixed relative to the spool shaft is sleeved outside the outer ring of the rolling bearing 60;
a shaft sleeve 70 is arranged between the outer-layer friction disc 30 capable of moving along the axis direction of the spool shaft and the spool shaft 10, the shaft sleeve 70 is sleeved outside the spool shaft 10, the outer-layer friction disc 30 capable of moving along the axis direction of the spool shaft is sleeved outside the shaft sleeve 70, in the embodiment, the shaft sleeve forms a sliding bearing, and the outer-layer friction disc sleeved outside the shaft sleeve or the spool shaft can rotate relative to the shaft sleeve, so that the outer-layer friction disc sleeved outside the shaft sleeve can rotate relative to the spool shaft; in addition, the outer-layer friction disk sleeved outside the shaft sleeve or the spool shaft can move along the axial direction of the spool shaft relative to the shaft sleeve, so that the outer-layer friction disk sleeved outside the shaft sleeve can move along the axial direction of the spool shaft. In this embodiment, the material of the shaft sleeve may be nylon or other antifriction material.
A mechanical transmission mechanism is arranged between the power shaft 20 and one of the outer friction discs 30. In this embodiment, the mechanical transmission mechanism may be a chain transmission mechanism, a belt transmission mechanism, a gear transmission mechanism, or the like, and is preferably a chain transmission mechanism.
In this embodiment, as shown in fig. 2, the outer friction disk 30 (i.e., the second outer friction disk) below the middle friction disk 40 is provided with a driven sprocket 80, the power shaft 70 is provided with a driving sprocket 90, and a chain (not shown) is sleeved outside the driven sprocket 80 and the driving sprocket 90.
Each outer friction disc 30 includes a holder portion 301 and a contact portion 302 fixedly mounted on the holder portion 301 for contacting the intermediate friction disc 40.
In this embodiment, the driven part of the clutch and the driving part of the clutch are both disposed at the upper end of the spool shaft.
In this embodiment, an output shaft of a driving motor of the invisible protection net is connected with the drum shaft, so that the driving motor drives the drum shaft to rotate.
Other structures of the invisible protection net of the present embodiment can be referred to chinese utility model patent specifications CN 210439937U and CN 210422414U, which are not described herein again.
Claims (10)
1. A net curtain folding and unfolding driving mechanism for an invisible protective net, the invisible protective net comprises a drum shaft and a power shaft, the net curtain folding and unfolding driving mechanism comprises a driven part of a clutch and a driving part of the clutch, the driven part of the clutch is connected with the power shaft to enable the driven part of the clutch to rotate together with the power shaft, the driving part of the clutch is connected with the drum shaft to enable the driving part of the clutch to rotate together with the drum shaft, and torque on the power shaft is transmitted to the drum shaft when the driven part of the clutch is engaged with the driving part of the clutch, and the invisible protective net folding and unfolding driving mechanism is characterized in that:
the driven portion of the clutch includes two outer friction discs;
the active portion of the clutch includes an intermediate friction disc;
the intermediate friction disk is clamped between the two outer friction disks;
the outer friction disks are respectively contacted with the middle friction disk.
2. The net curtain folding and unfolding driving mechanism for the invisible protection net according to claim 1, characterized in that: the net curtain folding and unfolding driving mechanism further comprises an adjusting mechanism used for adjusting the pressure between each outer friction disc and each middle friction disc.
3. The net curtain folding and unfolding driving mechanism for the invisible protection net according to claim 2, characterized in that: the pressure adjusting mechanism comprises a pressing component for adjusting the axial distance between the two outer friction discs.
4. The net curtain folding and unfolding driving mechanism for the invisible protection net according to claim 3, characterized in that:
the compressing components are provided with a plurality of groups;
the axes of the outer friction discs and the axes of the middle friction discs are coincident;
all of the hold-down assemblies are circumferentially spaced about the axis of the outer friction disc.
5. The net curtain folding and unfolding driving mechanism for the invisible protection net according to claim 4, characterized in that:
the compression assembly comprises a bolt and a nut;
the rod part of the bolt penetrates through the two outer-layer friction disks, the nut is in threaded connection with the rod part of the bolt, and the two outer-layer friction disks are clamped between the head part of the bolt and the nut.
6. The net curtain folding and unfolding driving mechanism for the invisible protection net according to claim 5, characterized in that:
in each compression assembly, the nut faces one of the outer-layer friction disks, the head of the bolt faces the other outer-layer friction disk, the outer-layer friction disk facing the nut is a first outer-layer friction disk, and the outer-layer friction disk facing the head of the bolt is a second outer-layer friction disk;
each compression assembly further comprises a compression spring sleeved outside the rod portion of the bolt, and the compression spring is clamped between the nut and the first outer friction disc or between the head portion of the bolt and the second outer friction disc.
7. The net curtain retracting and expanding driving mechanism for the invisible protection net according to any one of claims 1 to 6, characterized in that:
the middle friction disc is fixedly sleeved outside the winding drum shaft relative to the circumference of the winding drum shaft;
each outer friction disc is rotationally sleeved outside the drum shaft relative to the drum shaft;
the axes of the outer friction discs, the intermediate friction discs and the spool shaft are coincident.
8. The net curtain folding and unfolding driving mechanism for the invisible protection net according to claim 7, characterized in that:
the intermediate friction disk can move along the axial direction of the spool shaft;
one of the outer friction disks is axially fixed relative to the spool shaft, and the other outer friction disk is capable of moving in the axial direction of the spool shaft.
9. The net curtain folding and unfolding driving mechanism for the invisible protection net according to claim 8, characterized in that:
the intermediate friction disk is connected with the drum shaft through a key;
a rolling bearing is arranged between the outer-layer friction disc axially fixed relative to the drum shaft and the drum shaft, an inner ring of the rolling bearing is sleeved outside the drum shaft, and the outer-layer friction disc axially fixed relative to the drum shaft is sleeved outside an outer ring of the rolling bearing;
a shaft sleeve is arranged between the outer-layer friction disc capable of moving along the axis direction of the winding drum shaft and the winding drum shaft, the shaft sleeve is sleeved outside the winding drum shaft, and the outer-layer friction disc capable of moving along the axis direction of the winding drum shaft is sleeved outside the shaft sleeve.
10. The net curtain retracting and expanding driving mechanism for the invisible protection net according to any one of claims 1 to 6, characterized in that:
the driven part of the clutch and the driving part of the clutch are both arranged at the upper end of the winding drum shaft;
a mechanical transmission mechanism is arranged between the power shaft and one of the outer friction discs;
each outer friction disc includes a bracket portion and a contact portion fixedly mounted on the bracket portion for contact with the intermediate friction disc.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022408602.4U CN213743180U (en) | 2020-10-26 | 2020-10-26 | Net curtain folding and unfolding driving mechanism for invisible protective net |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022408602.4U CN213743180U (en) | 2020-10-26 | 2020-10-26 | Net curtain folding and unfolding driving mechanism for invisible protective net |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213743180U true CN213743180U (en) | 2021-07-20 |
Family
ID=76854264
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022408602.4U Active CN213743180U (en) | 2020-10-26 | 2020-10-26 | Net curtain folding and unfolding driving mechanism for invisible protective net |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213743180U (en) |
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2020
- 2020-10-26 CN CN202022408602.4U patent/CN213743180U/en active Active
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