CN209765684U - Self-generating wireless doorbell - Google Patents
Self-generating wireless doorbell Download PDFInfo
- Publication number
- CN209765684U CN209765684U CN201920402983.XU CN201920402983U CN209765684U CN 209765684 U CN209765684 U CN 209765684U CN 201920402983 U CN201920402983 U CN 201920402983U CN 209765684 U CN209765684 U CN 209765684U
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- China
- Prior art keywords
- primary
- yoke
- permanent magnet
- spring
- teeth
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- 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.)
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Classifications
-
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B3/00—Audible signalling systems; Audible personal calling systems
- G08B3/10—Audible signalling systems; Audible personal calling systems using electric transmission; using electromagnetic transmission
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
- H04B1/40—Circuits
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- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Electromagnetism (AREA)
- General Physics & Mathematics (AREA)
- Permanent Magnet Type Synchronous Machine (AREA)
- Near-Field Transmission Systems (AREA)
Abstract
The utility model relates to a self-generating wireless doorbell, which comprises a transmitting module and a receiving module, wherein the transmitting module comprises a shell, a circuit board and a generating set, and the generating set comprises a primary unit, a secondary unit and a pressing unit; the primary part comprises a primary yoke, a coil and at least one permanent magnet array, the secondary part comprises a secondary yoke and secondary teeth, and the secondary teeth are of a flat plate type and inserted finger-shaped structure formed by uniformly toothed magnetic conductive materials; the pressing unit comprises a spring, a spring support and a pushing unit, the spring is arranged in the spring support, one end of the pushing unit is a pressing head, and the other end of the pushing unit is communicated with the secondary yoke; when the pressing head is pressed down, the spring is compressed to push the secondary stage to move forwards; when the pressing head is released, the pushing unit and the secondary move backwards, the secondary reciprocates on the plane, and current is generated in the coil through the change of the magnetic circuit and the magnetic flux. An object of the utility model is to provide a need not indoor power supply, need not to use wireless doorbell of electricity generation certainly of battery.
Description
Technical Field
The utility model belongs to doorbell power supply field, concretely relates to from wireless doorbell of electricity generation.
Background
With the development of electronic technology and wireless communication technology, doorbell design tends to be wireless. The wireless doorbell transmits signals to the indoor ringing receiving device through the outdoor wireless transmitting device, and the indoor receiving end of the doorbell produces sound. Conventional wireless doorbells all require a battery to power an outdoor transmitting device. If the battery can not be found and changed in time when the battery electric energy exhausts and can influence the use of doorbell function, the improper disposal of abandonment battery causes environmental pollution easily in addition.
SUMMERY OF THE UTILITY MODEL
The utility model aims to overcome current doorbell need indoor power supply or change the problem that the battery can influence the doorbell use untimely and provide one kind need not indoor power supply, need not to use the wireless doorbell of spontaneous electricity of battery.
In order to achieve the above object, the utility model adopts the following technical scheme: a self-generating wireless doorbell comprises a transmitting module and a receiving module, wherein the transmitting module comprises a shell, a circuit board and a generating set, and the generating set comprises a primary unit, a secondary unit and a pressing unit; the primary comprises a primary yoke, a coil and at least one permanent magnet array, wherein poles N, S of the permanent magnets in the permanent magnet array are alternately and uniformly arranged, the primary yoke is provided with a primary convex part, the coil is sleeved on the primary convex part or the primary yoke, and the permanent magnet array is arranged on the primary yoke; the secondary comprises a secondary yoke and secondary teeth, the secondary teeth are of a flat plate type and are of a finger-inserting structure formed by magnetic conductive materials with uniform teeth, the tooth pitch of the secondary teeth is equal to nonzero even times of the pole pitch of the permanent magnet, and a gap is formed between the secondary yoke and the primary convex part and is a first air gap; the permanent magnet array and the secondary teeth are arranged on the same plane or an entire column of permanent magnets are arranged below the secondary teeth, and a gap is formed between the permanent magnet array and the secondary teeth and is a second air gap; the pressing unit comprises a pressing head, a spring support and a pushing unit, the spring is arranged in the spring support, one end of the pushing unit is connected with the pressing head, and the other end of the pushing unit is communicated with the secondary yoke; when the pressing head is pressed down, the spring compresses the pushing unit to push the secondary to move towards one direction; when the pressing head is released, the spring rebounds to push the secondary to move in the opposite direction, the secondary reciprocates on the plane, and current is generated in the coil through the change of the magnetic circuit and the magnetic flux.
The pushing unit is a pressing rod, the pressing rod penetrates through the spring and the spring support, one end of the pressing rod is connected with the pressing head, and the other end of the pressing rod is connected with the secondary yoke.
The pushing unit comprises a screw, a screw sleeve, a gear and a rack, the screw sleeve is embedded into the spring support and can slide in the spring support, the screw and the screw sleeve are arranged in a matched mode, the end of the screw is provided with the gear, the rack is fixed on the secondary yoke, and the rack is meshed with the gear; according to the reciprocating type gear rack, a pressing head is pressed down, the pressing head pushes a screw sleeve to move linearly in one direction, a spring is compressed, the screw sleeve drives a screw to rotate by linear motion, the pressing head is loosened, the spring rebounds to push the screw sleeve to move linearly in the opposite direction, the screw sleeve drives the screw to rotate reversely, the screw sleeve reciprocates to drive the screw to rotate in the positive and negative directions and further drive a gear to rotate in the positive and negative directions, and therefore a rack is driven to move back and forth and drives a secondary yoke to reciprocate.
The primary yoke is of an L-shaped structure, the primary lug boss is arranged at the end part of the horizontal section of the L-shaped structure, the upper end surface of the vertical section of the L-shaped structure and the upper end surface of the primary lug boss are both provided with sliding grooves, and the primary yoke comprises a row of permanent magnet arrays; the secondary is arranged above the primary lug boss, the secondary yoke corresponds to the primary lug boss, the secondary teeth are arranged on one side of the secondary yoke, at least two groups of sliding blocks are arranged on the secondary, and the two groups of sliding blocks respectively slide in the two sliding grooves.
The coil is sleeved on the vertical section of the primary yoke or the bottom of the primary yoke or the primary convex part, the permanent magnet array is arranged on the inner side surface of the upper part of the vertical section, and the permanent magnet array and the secondary teeth are arranged in the same plane above the coil.
The coil is sleeved on the bottom of the primary yoke or the primary bulge, and the permanent magnet array is arranged on the bottom surface of the primary yoke below the secondary yoke and is in the same plane with the coil.
The primary yoke is of a U-shaped structure, sliding grooves are formed in the upper end faces of the two sides of the primary yoke, the primary protruding portion is arranged on the bottom face of the primary yoke and comprises two permanent magnet arrays, the secondary protruding portion is arranged above the primary protruding portion, the secondary teeth are arranged on the two sides of the secondary yoke, at least two groups of sliding blocks are arranged on the secondary yoke, and the sliding blocks slide in the sliding grooves in the two sides of the primary yoke respectively.
The primary comprises two coils which are respectively sleeved on two sides of the primary yoke, or the two coils are respectively sleeved on the bottoms of the primary yokes on two sides of the primary lug boss.
The two permanent magnet arrays are respectively arranged on two sides of the bottom of the primary yoke, and the coils are sleeved on the convex parts, or the two coils are respectively sleeved on the bottoms of the primary yokes on two sides of the convex parts.
And corresponding secondary teeth on two sides of the secondary yoke are staggered by half pitch in the length direction of the secondary yoke, or permanent magnets at corresponding positions of two permanent magnet arrays are staggered by half pole pitch in the length direction of the primary yoke.
Compared with the prior art, the utility model discloses the beneficial effect who produces as follows: the utility model provides a novel structure from electricity generation wireless doorbell, automatic electricity generation and power supply give wireless transmitting device when can realizing pressing the doorbell. And the secondary of the power generation device in the doorbell is only made of magnetic conductive materials with teeth, permanent magnets and windings are not needed, and the secondary is simple in structure, small in size and low in cost. The doorbell is pressed once and the secondary of the power generation device reciprocates once.
Drawings
Fig. 1 is the structural schematic diagram of the doorbell of the utility model.
Fig. 2 is the utility model discloses press the disassembly schematic diagram of module.
Fig. 3 is one of the schematic structural diagrams of the power generation device of the present invention.
Fig. 4 is a sectional view taken along line a-a of fig. 3.
Fig. 5 is a second schematic structural diagram of the power generation device of the present invention.
Fig. 6 is a third schematic structural diagram of the power generation device of the present invention.
Fig. 7 is one of the layout diagrams of the permanent magnet coil of the power generation module of the present invention.
Fig. 8 is a second schematic layout diagram of the power generation module permanent magnet coil according to the present invention.
Fig. 9 is a third schematic diagram of the layout of the permanent magnet coil of the power generation module of the present invention.
Fig. 10 is a fourth schematic diagram of the layout of the permanent magnet coil of the power generation module of the present invention.
Fig. 11 is a fifth schematic diagram of the layout of the permanent magnet coil of the power generation module of the present invention.
Fig. 12 is a sixth schematic diagram of the layout of the permanent magnet coil of the present invention.
Fig. 13 is a fourth schematic structural diagram of the power generation device of the present invention.
Fig. 14 is a fifth schematic structural view of the power generation device of the present invention.
Fig. 15 is a sixth schematic structural view of the power generation device of the present invention.
The magnetic field generating device comprises a housing 1, a housing 2, an end cover 3, a receiving module 4, a circuit board 5, a power generating module 6, a primary yoke 7, a sliding groove 8, a permanent magnet array 9, a connecting slider 10, a secondary tooth 11, a secondary yoke 12, a first baffle plate 13, a spring 14, a spring support 15, a pressing rod 16, a wire guide hole 17, a wire 18, a coil 19, a second baffle plate 20, a magnetic force line direction 21, a primary bulge 22, a first air gap 23, a second air gap 24, a screw rod 25, a screw rod sleeve 26, a support 27, a base 28, a gear 29, a rack 30, a pressing head 31, a pressing end cover 32, a bump 33 and a groove.
Detailed Description
The invention will be further illustrated and described with reference to the accompanying drawings and specific embodiments.
Example 1
As shown in fig. 1-9, a self-generating wireless doorbell comprises a transmitting module and a receiving module 3; the transmitting module comprises a shell 1, an end cover 2, a circuit board 4 and a power generation module 5; the receiving module 3 is an indoor signal receiving and ringing device; the power generation module comprises a primary part, a secondary part and a pressing unit, wherein the primary part is in a horizontal plane shape, the cross section of the primary part is in a U shape, a U-shaped primary yoke 6 is arranged on the primary part, a sliding groove 7 is arranged at the top of the primary part, a primary convex part 21 is arranged at the bottom of the primary part, a coil 18 is wound on the primary convex part 21, permanent magnet arrays 8 are arranged on two side faces of the inner side of the U shape, the permanent magnet arrays on each side are N, S poles which are alternately and uniformly arranged, namely, the pole distances among the; the secondary is a flat plate with uniformly-toothed end and the teeth of the inserted finger are secondary teeth 10, the middle part is a secondary yoke 11, and the tooth pitch tau of the secondary teeth istEqual to the pole pitch τ between permanent magnetspIs a first air gap 22, the gap between the secondary yoke 11 and the primary lobe 21 is a second air gap 23; secondary through connecting slide block connected therewith9 can move along the sliding chute 7; the pressing unit comprises a spring 13, a spring support 14, a pressing rod 15, a pressing head 30 and a pressing end cover 31, the spring 13 is arranged in the spring support 14, the pressing rod 15 penetrates through the spring 13 and the spring support 14, one end of the pressing rod 15 is fixedly connected with the secondary yoke 11, the other end of the pressing rod 15 is fixedly connected with the pressing head 30, a bump 32 is arranged at the lower end of the pressing head 30, a groove 33 is formed in the spring support, the bump 32 is matched with the groove 33, and when the pressing head 30 is pressed, the spring 13 is compressed and the pressing head 30 pushes the pressing rod 15 to drive the secondary to move forwards; when the pressing head 30 is released, the spring 13 rebounds to push the pressing rod 15 to retreat, the pressing rod 15 drives the pressing head 30 to retreat together with the secondary, and the secondary reciprocates on the plane; during the reciprocating motion of the secondary under the action of the pressing rod 15, when the secondary teeth 10 are aligned with the permanent magnet poles in the primary permanent magnet array 8 (see fig. 4 and 5), the magnetic circuit passes through the secondary teeth 10, the secondary yoke 11, the first air gap 22, the primary boss 21, the primary yoke 6, the permanent magnet poles in the permanent magnet array 8 and the second air gap 23 in the transverse direction, and then the magnetic circuit passes through the coil 18; when the secondary teeth 10 cross the magnetic poles of two permanent magnets in the primary upper permanent magnet array 8 (as shown in fig. 3), the magnetic circuit is in the longitudinal direction, the magnetic fields of the secondary teeth 10 and two adjacent permanent magnets in the permanent magnet array 8 form a closed loop, and the magnetic circuit does not penetrate through the large coil 18; the secondary continues to move, when the secondary teeth 10 are aligned with the permanent magnet poles in the primary upper permanent magnet array 8 again, the magnetic circuit is opposite to the last time due to the opposite permanent magnet polarities, the magnetic circuit transversely passes through the primary yoke 6, the primary boss 21, the first air gap 22, the secondary yoke 11, the secondary teeth 10, the second air gap 23 and the permanent magnet poles in the permanent magnet array 8, and the magnetic circuit passes through the coil 18; in the above process, the coil is formed to cut the magnetic line of force by the change of the magnetic circuit, thereby generating the current. The current is connected to the circuit board 4 through the wire 17 and the wire hole 16 on the primary side to supply power to the circuit board, the circuit board is provided with a capacitor or other electric energy storage devices to store residual electric energy, the transmitting device on the circuit board transmits signals, and the indoor receiving end receives the signals and rings.
Example 2
As shown in fig. 1-6 and 10, a self-generating wireless doorbell is different from embodiment 1 in that a permanent magnet array 8 is located in the middle of a U-shaped primary yoke 6, and a coil 18 is wound on the permanent magnet array 8 or at the bottom of the U-shaped primary yoke 6 and located on both sides of the permanent magnet array 8 or at both sides of the U-shaped primary yoke 6 and located on both sides of the permanent magnet array 8.
Example 3
As shown in fig. 1-6, 10 and 11, a self-generating wireless doorbell is different from embodiment 1 in that a primary yoke 6 is in an L-shaped structure, a primary convex portion 21 is arranged at an end of a horizontal section of the L-shaped structure, sliding grooves are formed in an upper end surface of a vertical section of the L-shaped structure and an upper end surface of the primary convex portion 21, and the primary comprises a row of permanent magnet arrays 8; the secondary is arranged above the primary boss, the secondary yoke 11 corresponds to the primary boss 21, the secondary teeth 10 are arranged on a single side of the secondary yoke 11, and the coil 18 is wound on the vertical section or bottom or primary boss of the L-shaped primary yoke.
Example 4
As shown in fig. 1-6, 10 and 12, a self-generating wireless doorbell is different from embodiment 1 in that corresponding secondary teeth 10 on both sides of a secondary yoke 11 are staggered by half a pitch in the length direction of the secondary yoke 11, or permanent magnets at corresponding positions of two permanent magnet arrays 8 are staggered by half a pole pitch in the length direction of a primary yoke 11.
Example 5
As shown in fig. 12, 13, 14 and 15, a self-generating wireless doorbell is different from the embodiments 1, 2, 3 and 4 in that: the pressing unit comprises a spring 13, a spring bracket 14, a screw 24, a screw sleeve 25, a pressing head 30 and a pressing end cover 31; the screw sleeve 25 is embedded into the spring support 14, the screw sleeve 25 is provided with a convex block 32, the spring support is provided with a groove 33, the convex block 32 is matched with the groove 33, so that the screw sleeve 25 can slide along the inner wall of the spring support 14 and cannot rotate in the spring support 14, the lower end of the pressing head 30 is provided with the convex block 32, the convex block 32 is matched with the groove 33, the pressing head 30 is pressed, and the pressing head 30 pushes the screw sleeve 25 to move linearly, so that the screw 24 is driven to rotate; the secondary yoke 11 is provided with a rack 29, the tail end of the screw 24 is provided with a gear 28, the gear 28 is meshed with the rack 29, and the pressing head 30 reciprocates to drive the gear 28 to rotate in the positive and negative directions, so that the rack is driven to move back and forth, and the secondary yoke 11 is driven to move back and forth.
Claims (10)
1. The utility model provides a from electricity generation wireless doorbell which characterized in that: the device comprises a transmitting module and a receiving module, wherein the transmitting module comprises a shell, a circuit board and a power generation device, and the power generation device comprises a primary unit, a secondary unit and a pressing unit; the primary comprises a primary yoke, a coil and at least one permanent magnet array, wherein poles N, S of the permanent magnets in the permanent magnet array are alternately and uniformly arranged, the primary yoke is provided with a primary convex part, the coil is sleeved on the primary convex part or the primary yoke, and the permanent magnet array is arranged on the primary yoke; the secondary comprises a secondary yoke and secondary teeth, the secondary teeth are of a flat plate type and are of a finger-inserting structure formed by magnetic conductive materials with uniform teeth, the tooth pitch of the secondary teeth is equal to nonzero even times of the pole pitch of the permanent magnet, and a gap is formed between the secondary yoke and the primary convex part and is a first air gap; the permanent magnet array and the secondary teeth are arranged on the same plane or an entire column of permanent magnets are arranged below the secondary teeth, and a gap is formed between the permanent magnet array and the secondary teeth and is a second air gap; the pressing unit comprises a pressing head, a spring support and a pushing unit, the spring is arranged in the spring support, one end of the pushing unit is connected with the pressing head, and the other end of the pushing unit is communicated with the secondary yoke; when the pressing head is pressed down, the spring compresses the pushing unit to push the secondary to move towards one direction; when the pressing head is released, the spring rebounds to push the secondary to move in the opposite direction, the secondary reciprocates on the plane, and current is generated in the coil through the change of the magnetic circuit and the magnetic flux.
2. The self-generating wireless doorbell of claim 1, characterized in that: the pushing unit is a pressing rod, the pressing rod penetrates through the spring and the spring support, one end of the pressing rod is connected with the pressing head, and the other end of the pressing rod is connected with the secondary yoke.
3. The self-generating wireless doorbell of claim 1, characterized in that: the pushing unit comprises a screw, a screw sleeve, a gear and a rack, the screw sleeve is embedded into the spring support and can slide in the spring support, the screw and the screw sleeve are arranged in a matched mode, the end of the screw is provided with the gear, the rack is fixed on the secondary yoke, and the rack is meshed with the gear; according to the reciprocating type gear rack, a pressing head is pressed down, the pressing head pushes a screw sleeve to move linearly in one direction, a spring is compressed, the screw sleeve drives a screw to rotate by linear motion, the pressing head is loosened, the spring rebounds to push the screw sleeve to move linearly in the opposite direction, the screw sleeve drives the screw to rotate reversely, the screw sleeve reciprocates to drive the screw to rotate in the positive and negative directions and further drive a gear to rotate in the positive and negative directions, and therefore a rack is driven to move back and forth and drives a secondary yoke to reciprocate.
4. The self-generating wireless doorbell of claim 1, characterized in that: the primary yoke is of an L-shaped structure, the primary lug boss is arranged at the end part of the horizontal section of the L-shaped structure, the upper end surface of the vertical section of the L-shaped structure and the upper end surface of the primary lug boss are both provided with sliding grooves, and the primary yoke comprises a row of permanent magnet arrays; the secondary is arranged above the primary lug boss, the secondary yoke corresponds to the primary lug boss, the secondary teeth are arranged on one side of the secondary yoke, at least two groups of sliding blocks are arranged on the secondary, and the two groups of sliding blocks respectively slide in the two sliding grooves.
5. The self-generating wireless doorbell of claim 4, characterized in that: the coil is sleeved on the vertical section of the primary yoke or the bottom of the primary yoke or the primary convex part, the permanent magnet array is arranged on the inner side surface of the upper part of the vertical section, and the permanent magnet array and the secondary teeth are arranged in the same plane above the coil.
6. The self-generating wireless doorbell of claim 4, characterized in that: the coil is sleeved on the bottom of the primary yoke or the primary bulge, and the permanent magnet array is arranged on the bottom surface of the primary yoke below the secondary yoke and is in the same plane with the coil.
7. The self-generating wireless doorbell of claim 1, characterized in that: the primary yoke is of a U-shaped structure, sliding grooves are formed in the upper end faces of the two sides of the primary yoke, the primary protruding portion is arranged on the bottom face of the primary yoke and comprises two permanent magnet arrays, the secondary protruding portion is arranged above the primary protruding portion, the secondary teeth are arranged on the two sides of the secondary yoke, at least two groups of sliding blocks are arranged on the secondary yoke, and the sliding blocks slide in the sliding grooves in the two sides of the primary yoke respectively.
8. The self-generating wireless doorbell of claim 7, characterized in that: the primary comprises two coils which are respectively sleeved on two sides of the primary yoke, or the two coils are respectively sleeved on the bottoms of the primary yokes on two sides of the primary lug boss.
9. The self-generating wireless doorbell of claim 7, characterized in that: the two permanent magnet arrays are respectively arranged on two sides of the bottom of the primary yoke, and the coils are sleeved on the convex parts, or the two coils are respectively sleeved on the bottoms of the primary yokes on two sides of the convex parts.
10. The self-generating wireless doorbell of claim 7, characterized in that: and corresponding secondary teeth on two sides of the secondary yoke are staggered by half pitch in the length direction of the secondary yoke, or permanent magnets at corresponding positions of two permanent magnet arrays are staggered by half pole pitch in the length direction of the primary yoke.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2019100716796 | 2019-01-25 | ||
| CN201910071679 | 2019-01-25 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209765684U true CN209765684U (en) | 2019-12-10 |
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ID=67236714
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910240658.2A Pending CN110033575A (en) | 2019-01-25 | 2019-03-28 | A kind of self-generating wireless doorbell |
| CN201920402983.XU Expired - Fee Related CN209765684U (en) | 2019-01-25 | 2019-03-28 | Self-generating wireless doorbell |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910240658.2A Pending CN110033575A (en) | 2019-01-25 | 2019-03-28 | A kind of self-generating wireless doorbell |
Country Status (1)
| Country | Link |
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| CN (2) | CN110033575A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110033575A (en) * | 2019-01-25 | 2019-07-19 | 河南理工大学 | A kind of self-generating wireless doorbell |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101882819A (en) * | 2010-07-08 | 2010-11-10 | 东南大学 | Rectilinear cylindrical switching magnetic flux permanent magnet generator |
| CN104767267A (en) * | 2015-03-10 | 2015-07-08 | 西安交通大学 | Portable power generation equipment based on linear motor |
| US10184534B2 (en) * | 2015-08-04 | 2019-01-22 | Mehdi Abolhassani | Frictionless electromagnetic braking system |
| CN105718654A (en) * | 2016-01-20 | 2016-06-29 | 天津大学 | Permanent magnet shape designing method of permanent magnet synchronous linear motor |
| CN206833630U (en) * | 2017-04-26 | 2018-01-02 | 徐良 | Wireless self generating door bell |
| CN106941307A (en) * | 2017-05-27 | 2017-07-11 | 南京信息工程大学 | A kind of self generating door bell electric supply installation |
| CN110033575A (en) * | 2019-01-25 | 2019-07-19 | 河南理工大学 | A kind of self-generating wireless doorbell |
-
2019
- 2019-03-28 CN CN201910240658.2A patent/CN110033575A/en active Pending
- 2019-03-28 CN CN201920402983.XU patent/CN209765684U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110033575A (en) * | 2019-01-25 | 2019-07-19 | 河南理工大学 | A kind of self-generating wireless doorbell |
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| CN110033575A (en) | 2019-07-19 |
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| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20191210 Termination date: 20200328 |
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| CF01 | Termination of patent right due to non-payment of annual fee |