CN215986862U - Projector dustproof device capable of being accurately opened and closed - Google Patents
Projector dustproof device capable of being accurately opened and closed Download PDFInfo
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- CN215986862U CN215986862U CN202122040953.9U CN202122040953U CN215986862U CN 215986862 U CN215986862 U CN 215986862U CN 202122040953 U CN202122040953 U CN 202122040953U CN 215986862 U CN215986862 U CN 215986862U
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- cover body
- projector
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- hall sensor
- turnover cover
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Abstract
A projector dustproof device capable of being accurately opened and closed is provided with a projection port and comprises a cover body, a turnover cover, a PCB (printed circuit board), a connecting mechanism and a driving mechanism; the cover body is connected with the projector and is provided with a yielding port opposite to the projection port; the turnover cover is rotatably arranged on the cover body so as to open or close the position-giving opening, and a containing groove for containing the turnover cover is arranged on the cover body; the PCB circuit board is arranged on the cover body, and a first Hall sensor, a second Hall sensor and a central processing unit are arranged on the PCB circuit board; the connecting mechanism is arranged on the cover body and connected with the turnover cover; the driving mechanism is arranged on the cover body and connected with and drives the connecting rod to rotate so as to drive the turnover cover to open or close the position-giving opening; set up first hall sensor and second hall sensor on the PCB circuit board, with actuating mechanism, central processing unit cooperation to guarantee that the flip lid can reach the best angle of opening, under the condition that does not influence projector normal use, play dustproof and protective effect to the lens.
Description
Technical Field
The utility model belongs to the technical field of electronic equipment, and particularly relates to a rotatable, openable and closable projector dustproof device.
Background
A projector is a device that can project images or videos onto a curtain. Most present projecting apparatus lenses all expose in the air under the condition of not using, under this condition, dust or other foreign matters in the environment can adhere to on the lens, and wash and need special cleaner and special wiping cloth again, otherwise easily cause the lens fish tail, influence the projection effect, to portable projecting apparatus in addition, carry the in-process and change and cause the fish tail and collide with the lens, can learn to be one of the problem that the user expects to solve to the protection of lens.
SUMMERY OF THE UTILITY MODEL
The utility model aims to overcome the defects of the prior art and provide a dustproof device of a projector, which can be accurately opened and closed.
The utility model adopts the following technical scheme:
a projector dustproof device capable of being accurately opened and closed is provided with a projection port and comprises a cover body, a turnover cover, a PCB (printed circuit board), a connecting mechanism and a driving mechanism;
the cover body is connected with the projector and is provided with a yielding port opposite to the projection port;
the turnover cover is rotatably arranged on the cover body so as to open or close the position-giving opening, and a containing groove for containing the turnover cover is arranged on the cover body;
the PCB circuit board is arranged on the cover body, and is provided with a first Hall sensor, a second Hall sensor and a central processing unit, wherein the first Hall sensor is connected with the central processing unit and is used for detecting whether the turnover cover rotates to the maximum opening angle or not; the second Hall sensor is connected with the central processing unit and is used for detecting whether the turnover cover rotates and is accommodated in the accommodating groove;
the connecting mechanism is arranged on the cover body and connected with the turnover cover, and comprises a first connecting arm and a first connecting arm which are rotatably and oppositely arranged on the cover body and connected with the turnover cover, and a connecting rod connected between the first connecting arm and the second connecting arm, wherein the first connecting arm is provided with a magnet;
the driving mechanism is arranged on the cover body, connected with and drives the connecting rod to rotate so as to drive the turnover cover to open or close the position-giving opening, and the central processing unit is connected with and controls the driving mechanism to work.
Furthermore, first linkage arm includes first L shape linkage segment, sets up at first L shape linkage segment one end and the first connecting head that the upset lid is connected and set up at the first perforation that the first L shape linkage segment other end can supply the connecting rod to pass, magnet sets up in first L shape linkage segment and is close to first fenestrate one end.
Furthermore, the first connecting arm further comprises a limiting block arranged at one end, close to the first through hole, of the first L-shaped connecting section, and the magnet is arranged on the limiting block.
Furthermore, a limiting hole for allowing one end of the first L-shaped connecting section to penetrate through and a limiting plate which is arranged on the cover body and vertically opposite to the limiting hole so as to limit the rotation angle of the first connecting arm are arranged on the cover body, and when the first connecting arm rotates to drive the turnover cover to turn over to the maximum opening angle, the limiting block is in contact with the upper edge of the limiting hole; when the first connecting arm rotates to drive the turnover cover to turn over and store in the storage groove, the limiting block is in contact with the limiting plate.
Further, the central processing unit is controlled by an STC single chip microcomputer.
Further, the driving mechanism comprises a driving motor arranged on the cover body and a gear set arranged between the driving motor and the connecting rod.
Furthermore, the gear set comprises a first transmission gear arranged at the output end of the driving motor, a second transmission gear arranged on the connecting rod and a transition gear meshed with the first transmission gear and the second transmission gear respectively.
Furthermore, a motor mounting frame for mounting a driving motor and a gear mounting frame for mounting a transition gear are arranged on the cover body.
Furthermore, the second connecting arm comprises a second L-shaped connecting section, a second connector arranged at one end of the second L-shaped connecting section and connected with the turnover cover, and a second through hole arranged at the other end of the second L-shaped connecting section and allowing the connecting rod to pass through.
Furthermore, be provided with the connecting seat relative with the second connector on the flip cover, be provided with the spread groove that supplies the embedding of second connector on the connecting seat.
As can be seen from the above description of the present invention, compared with the prior art, the beneficial effects of the present invention are: according to the projector, the first Hall sensor and the second Hall sensor are arranged on the PCB and matched with the driving mechanism and the central processing unit, so that the turnover cover can be ensured to reach the optimal opening angle or be completely closed and accommodated in the accommodating groove, and the dustproof and protective effects are achieved on the lens under the condition that the normal use of the projector is not influenced;
through setting for the cooperation between first hall sensor, second hall sensor and the driving motor, can effectively eliminate because of the gear train transmission produces clearance tolerance, guarantee that the flip lid overturns to the biggest opening angle, do not influence the normal use of projector, and can effectively prevent to lead to the flip lid to overturn downwards because of the mistake in the use and influence the condition production that the projector used because of touching.
Drawings
FIG. 1 is a first schematic view of a closing structure of an abdicating port according to the present invention;
FIG. 2 is a schematic diagram of a closing structure of the abdicating hole of the present invention;
FIG. 3 is a third schematic view of a closing structure of the abdicating hole of the utility model;
FIG. 4 is a fourth schematic view illustrating a closing structure of the abdicating hole of the utility model;
FIG. 5 is a fifth schematic view illustrating a closing structure of the abdicating hole of the present invention;
FIG. 6 is a first schematic view illustrating an open structure of the abdicating hole of the present invention;
FIG. 7 is a schematic diagram of a abdication port opening structure of the present invention;
FIG. 8 is a schematic structural view of the connection mechanism;
FIG. 9 is a schematic view of the flip cover;
FIG. 10 is a schematic view of a first linkage arm;
FIG. 11 is a schematic view of the second link arm;
in the figure, 1-cover body, 2-turnover cover, 3-PCB circuit board, 4-connecting mechanism and 5-driving mechanism
The device comprises an 11-yielding port, a 12-accommodating groove, a 13-limiting hole, a 14-limiting plate, a 15-motor mounting rack, a 16-gear mounting rack, a 21-connecting seat, a 22-connecting groove, a 31-first Hall sensor, a 32-second Hall sensor, a 33-central processor, a 41-first connecting arm, a 411-first L-shaped connecting section, a 412-first connecting head, a 413-first through hole, a 414-limiting block, a 42-second connecting arm, a 421-second L-shaped connecting section, a 422-second connecting head, a 423-second through hole, a 43-connecting rod, a 44-magnet, a 51-driving motor, a 52-first transmission gear, a 53-second transmission gear and a 54-transition gear.
Detailed Description
The utility model is further described below by means of specific embodiments.
Referring to fig. 1 to 11, a projector dust-proof device capable of being opened and closed accurately includes a cover body 1, a flip cover 2, a PCB 3, a connecting mechanism 4, and a driving mechanism 5.
The projector is a projection device commonly used in the prior art, and specific structures and working principles of the projector are not further described herein.
The cover body 1 is connected with the projector so as to play a role in dust prevention and protection on the lens when the projector is not in use or in the moving process; specifically, the cover body 1 is provided with a relief opening 11 facing the projection opening and a storage groove 12 for storing the flip cover 2.
The flip cover 2 is rotatably disposed on the cover body 1 to open or close the allowance opening 11.
The PCB circuit board 3 is arranged on the cover body 1, and is provided with a first Hall sensor 31, a second Hall sensor 32 and a central processing unit 33, wherein the first Hall sensor 31 is connected with the central processing unit 33 and is used for detecting whether the turnover cover 2 rotates to the maximum opening angle to open the allowance opening 11; the second hall sensor 32 is connected to the cpu 33, and is configured to detect whether the flip cover 2 is rotated into the storage groove 12 to close the escape opening 11; specifically, the central processing unit 33 is controlled by an STC single chip microcomputer.
The connecting mechanism 4 is disposed on the cover body 1 and connected to the flip cover 2, and includes a first connecting arm 41 and a second connecting arm 41 rotatably disposed on the cover body 1 and connected to the flip cover 2, and a connecting rod 43 connected between the first connecting arm 41 and the second connecting arm 42, wherein a magnet 44 is disposed on the first connecting arm 41 and is matched with the first hall sensor 31 and the second hall sensor 32.
The first connecting arm 41 comprises a first L-shaped connecting section 411, a first connecting head 412 arranged at one end of the first L-shaped connecting section 411 and connected with the turnover cover 2, a first through hole 413 arranged at the other end of the first L-shaped connecting section 411 and allowing the connecting rod 43 to pass through, and a limiting block 414 arranged at one end of the first L-shaped connecting section 411 close to the first through hole 413, wherein the magnet 44 is arranged on the limiting block 413; specifically, the cover body 1 is provided with a limiting hole 13 through which one end of the first L-shaped connecting section 411 passes and a limiting plate 14 which is arranged on the cover body 1 and vertically opposite to the limiting hole 13 to limit the rotation angle of the first connecting arm 41, and when the first connecting arm 41 rotates to drive the flip cover 2 to flip to the maximum opening angle, the lower end surface of the limiting block 413 contacts with the upper edge of the limiting hole 13; when the first connecting arm 41 rotates to drive the turnover cover 2 to be overturned and accommodated in the accommodating groove 12, the upper end surface of the limiting block 413 contacts with the surface of the limiting plate 14; the limit block 414 is matched with the limit hole 13 and the limit plate 14 to limit the turnover angle of the turnover cover 2, so that the projector lens can be prevented from dust and protected under the condition that the normal use of the projector is not hindered; further, the first hall sensor 31 is arranged on one side 13, close to the limiting hole, of the PCB circuit board 3; the second hall sensor 32 is arranged on one side of the PCB circuit board 3 close to one end of the limiting plate 14; when the first connecting arm 41 rotates to the maximum opening angle of the flip cover 2, the magnet 44 on the limiting block 414 is close to and opposite to the first hall sensor 31, at this time, the magnetic induction intensity between the magnet 44 and the first hall sensor 31 is strongest, the magnetic induction intensity threshold is set as the opening working point of the maximum opening angle of the flip cover, and when the magnetic induction intensity between the magnet 44 and the first hall sensor 31 reaches the opening working point, the first hall sensor 31 outputs an electric signal to the central processing unit 33; when the first connecting arm 41 rotates to the position where the flip cover 2 is accommodated in the accommodating groove 12, the magnet on the limiting block 414 is close to and opposite to the second hall sensor 32, at this time, the magnetic induction between the magnet 44 and the second hall sensor 32 is strongest, the threshold value of the magnetic induction is set as a closing operating point at which the flip cover is completely closed, and when the magnetic induction between the magnet 44 and the second hall sensor 32 reaches the closing operating point, the second hall sensor 32 outputs an electric signal to the cpu 33.
The second connecting arm 42 has substantially the same structure as the first connecting arm 41, and is different from the following point: the second connecting arm 42 is not provided with the limiting block 414, specifically, the second connecting arm 42 includes a second L-shaped connecting section 421, a second connecting head 423 arranged at one end of the second L-shaped connecting section 421 and connected with the flip cover 2, and a second through hole 423 arranged at the other end of the second L-shaped connecting section 421 and through which the connecting rod 43 can pass; correspondingly, the turning cover 2 is provided with a connecting seat 21 opposite to the second connecting head 423, and the connecting seat 21 is provided with a connecting groove 22 for the second connecting head 423 to be embedded; further, two connecting seats 21 are provided, and the two connecting seats 21 are respectively opposite to the first connecting joint 413 and the second connecting joint 423 of the first connecting arm 41 and the second connecting arm 42, so as to realize the rotational connection between the flip cover 2 and the cover body 1.
The driving mechanism 5 is arranged on the cover body 1, is connected with and drives the connecting rod 43 to rotate so as to drive the turnover cover 2 to open or close the position-giving opening 11, the central processing unit 33 is connected with and controls the driving mechanism 5 to work, and the central processing unit 33 receives an electric signal sent by the first hall sensor 31 or the second hall sensor 32 and controls the driving mechanism 5 to work according to a processing result; specifically, the driving mechanism 5 includes a driving motor 51 disposed on the cover 1 and connected to the central processor 33, and a gear set disposed between the driving motor 51 and the connecting rod 43, where the gear set includes a first transmission gear 52 disposed at an output end of the driving motor 51, a second transmission gear 53 disposed on the connecting rod 43, and a transition gear 54 engaged with the first transmission gear 52 and the second transmission gear 53, respectively; further, a motor mounting bracket 15 for mounting the driving motor 51 and a gear mounting bracket 16 for mounting the transition gear 54 are provided on the cover body 1.
When the projector works, the central processing unit 33 firstly controls the driving motor 51 to rotate for a preset number of turns according to a preset program; if the magnetic induction intensity between the first hall sensor 31 and the magnet 44 reaches the preset working opening point, the first hall sensor 31 feeds back an electric signal to the central processing unit 33, the central processing unit 33 controls the driving motor 51 to stop working according to the electric signal fed back by the first hall sensor 31, and at this time, the flip cover 2 reaches the maximum opening angle; if the magnetic induction intensity between the first hall sensor 31 and the magnet 44 does not reach the preset working opening point, the central processing unit 33 controls the driving motor 41 to continue rotating for a certain number of turns, and at this time, if the magnetic induction intensity between the first hall sensor 31 and the magnet 44 reaches the preset working opening point, the central processing unit 33 controls the driving motor 51 to stop working according to the electric signal fed back by the first hall sensor 31; if the magnetic induction intensity between the first hall sensor 31 and the magnet 44 does not reach the preset work opening point, the central processing unit 33 controls the driving motor 51 to stop working according to the electric signal fed back by the first hall sensor 31, and the device is restarted after the staff checks the shutdown of the device; meanwhile, in the using process, when the turnover cover 2 is turned downwards due to error touch, the threshold value of the working opening point is lower than the preset value, at this time, the central processing unit 33 controls the driving motor 51 to rotate to drive the turnover cover 2 to rotate upwards until the working opening point reaches the preset value, so that the turnover cover 2 keeps the maximum opening angle, and the projection effect of the projector is ensured.
When the projector stops working, the central processing unit 33 controls the driving motor 51 to rotate reversely to drive the flip cover 2 to rotate downwards, when the magnetic induction intensity between the second hall sensor 32 and the magnet 44 reaches a preset closing working point, the second hall sensor 32 feeds back an electric signal to the central processing unit 33, the central processing unit 33 controls the driving motor 51 to stop working according to the electric signal fed back by the second hall sensor 32, and the storage of the flip cover 2 is completed.
According to the utility model, the first Hall sensor 31 and the second Hall sensor 32 are arranged on the PCB 3 and matched with the driving mechanism 5 and the central processing unit 33, so that the turnover cover 2 can reach the optimal opening angle or be completely closed and accommodated in the accommodating groove 12, and the dustproof and protective effects on the lens are achieved under the condition that the normal use of the projector is not influenced; meanwhile, through setting the cooperation between the first hall sensor 31, the second hall sensor 32 and the driving motor 51, the clearance tolerance generated due to gear set transmission can be effectively eliminated, the turnover cover 2 is ensured to be turned over to the maximum opening angle, the normal use of the projector is not influenced, and the condition that the turnover cover 2 is turned over downwards to influence the use of the projector due to mistaken touch in the use process can be effectively prevented from being generated.
The above description is only a preferred embodiment of the present invention, and therefore should not be taken as limiting the scope of the utility model, which is defined by the appended claims and their equivalents and modifications within the scope of the description.
Claims (10)
1. The utility model provides a can accurate projector dust keeper who opens and shuts, be provided with the projection mouth on the projector, its characterized in that: the PCB circuit board is connected with the cover body through the connecting mechanism;
the cover body is connected with the projector and is provided with a yielding port opposite to the projection port;
the turnover cover is rotatably arranged on the cover body so as to open or close the position-giving opening, and a containing groove for containing the turnover cover is arranged on the cover body;
the PCB circuit board is arranged on the cover body, and is provided with a first Hall sensor, a second Hall sensor and a central processing unit, wherein the first Hall sensor is connected with the central processing unit and is used for detecting whether the turnover cover rotates to the maximum opening angle or not; the second Hall sensor is connected with the central processing unit and is used for detecting whether the turnover cover rotates and is accommodated in the accommodating groove;
the connecting mechanism is arranged on the cover body and connected with the turnover cover, and comprises a first connecting arm and a first connecting arm which are rotatably and oppositely arranged on the cover body and connected with the turnover cover, and a connecting rod connected between the first connecting arm and the second connecting arm, wherein the first connecting arm is provided with a magnet;
the driving mechanism is arranged on the cover body, connected with and drives the connecting rod to rotate so as to drive the turnover cover to open or close the position-giving opening, and the central processing unit is connected with and controls the driving mechanism to work.
2. The projector dustproof device capable of being accurately opened and closed according to claim 1, wherein: the first connecting arm comprises a first L-shaped connecting section, a first connecting head and a first through hole, wherein the first connecting head is arranged at one end of the first L-shaped connecting section and connected with the turnover cover, the first through hole is formed in the other end of the first L-shaped connecting section and can be used for the connecting rod to penetrate through, and the magnet is arranged at one end, close to the first through hole, of the first L-shaped connecting section.
3. The projector dustproof device capable of being accurately opened and closed according to claim 2, wherein: the first connecting arm further comprises a limiting block arranged at one end, close to the first through hole, of the first L-shaped connecting section, and the magnet is arranged on the limiting block.
4. The projector dustproof device capable of being accurately opened and closed according to claim 3, wherein: the cover body is provided with a limiting hole for one end of the first L-shaped connecting section to penetrate through and a limiting plate which is arranged on the cover body and vertically opposite to the limiting hole so as to limit the rotating angle of the first connecting arm, and when the first connecting arm rotates to drive the turnover cover to turn over to the maximum opening angle, the limiting block is contacted with the upper edge of the limiting hole; when the first connecting arm rotates to drive the turnover cover to turn over and store in the storage groove, the limiting block is in contact with the limiting plate.
5. The projector dustproof device capable of being accurately opened and closed according to claim 1, wherein: the central processing unit is controlled by an STC single chip microcomputer.
6. The projector dustproof device capable of being accurately opened and closed according to claim 1, wherein: the driving mechanism comprises a driving motor arranged on the cover body and a gear set arranged between the driving motor and the connecting rod.
7. The projector dustproof device capable of being accurately opened and closed according to claim 6, wherein: the gear set comprises a first transmission gear arranged at the output end of the driving motor, a second transmission gear arranged on the connecting rod and a transition gear respectively meshed with the first transmission gear and the second transmission gear.
8. The projector dustproof device capable of being accurately opened and closed according to claim 7, wherein: the cover body is provided with a motor mounting frame used for mounting a driving motor and a gear mounting frame used for mounting a transition gear.
9. The projector dustproof device capable of being accurately opened and closed according to claim 1, wherein: the second connecting arm comprises a second L-shaped connecting section, a second connector and a second through hole, wherein the second connector is arranged at one end of the second L-shaped connecting section and connected with the turnover cover, and the second through hole is formed in the other end of the second L-shaped connecting section and can be used for the connecting rod to pass through.
10. The dustproof device for projector according to claim 9, wherein: the turnover cover is provided with a connecting seat opposite to the second connector, and the connecting seat is provided with a connecting groove for embedding the second connector.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122040953.9U CN215986862U (en) | 2021-08-27 | 2021-08-27 | Projector dustproof device capable of being accurately opened and closed |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122040953.9U CN215986862U (en) | 2021-08-27 | 2021-08-27 | Projector dustproof device capable of being accurately opened and closed |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215986862U true CN215986862U (en) | 2022-03-08 |
Family
ID=80579631
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122040953.9U Active CN215986862U (en) | 2021-08-27 | 2021-08-27 | Projector dustproof device capable of being accurately opened and closed |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215986862U (en) |
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2021
- 2021-08-27 CN CN202122040953.9U patent/CN215986862U/en active Active
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20221111 Address after: 344799 Building B7, School Furniture Industrial Park, Nancheng County, Fuzhou City, Jiangxi Province Patentee after: Jiangxi Xingchi Electronic Technology Co.,Ltd. Address before: 362000 no.463 Chonghong street, Quanzhou Economic and Technological Development Zone, Fujian Province Patentee before: Quanzhou Ruichi Intelligent Technology Co.,Ltd. |