CN113012958A - Waterproof switch device capable of effectively adsorbing moisture in equipment and avoiding electric leakage - Google Patents
Waterproof switch device capable of effectively adsorbing moisture in equipment and avoiding electric leakage Download PDFInfo
- Publication number
- CN113012958A CN113012958A CN202110221643.9A CN202110221643A CN113012958A CN 113012958 A CN113012958 A CN 113012958A CN 202110221643 A CN202110221643 A CN 202110221643A CN 113012958 A CN113012958 A CN 113012958A
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- China
- Prior art keywords
- bevel gear
- electric leakage
- equipment
- baffle
- fixedly connected
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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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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
- H01H9/02—Bases, casings, or covers
- H01H9/04—Dustproof, splashproof, drip-proof, waterproof, or flameproof casings
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/02—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography
- B01D53/04—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography with stationary adsorbents
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/26—Drying gases or vapours
- B01D53/261—Drying gases or vapours by adsorption
Abstract
The invention relates to the technical field of waterproof switches and discloses a waterproof switch device capable of effectively adsorbing moisture in equipment and avoiding electric leakage. This waterproof switching device of electric leakage is avoided to moisture among the effective adsorption equipment, the weight of dehumidification ball can increase along with the increase of time, further makes crisscross baffle anticlockwise rotation ninety degrees, and the inside dehumidification ball of storage cavity can enter into the inside of chute once more this moment to the effect of equipment electric leakage is avoided to moisture in having reached in the continuous oneself adsorption equipment switch. After the dehumidifying pill in the material storage cavity is used up, the buzzer alarm can give out alarm sound, so that the effect of reminding people to add a new dehumidifying pill is achieved.
Description
Technical Field
The invention relates to the technical field of waterproof switches, in particular to a waterproof switch device which can effectively adsorb moisture in equipment and avoid electric leakage.
Background
The waterproof switch is a switch which can be operated by wet hands as the name suggests. In the wet places such as toilets and kitchens, a waterproof switch is usually installed, and a waterproof cover is usually added on the outside of the conventional switch to prevent water from entering the inside of the switch.
But the moisture in bathroom or kitchen inside is bigger, and the waterproof switch commonly used can't accomplish self-dehumidifying function, if humidity in the air is too big, can't guarantee this moment whether waterproof switch can leak electricity, therefore current waterproof switch has very big potential safety hazard. How to continuously and self-adsorb moisture in a switch to avoid electric leakage of equipment becomes an important problem, so a waterproof switch device for effectively adsorbing moisture in equipment to avoid electric leakage is provided.
Disclosure of Invention
Technical problem to be solved
Aiming at the defects of the prior art, the invention provides the waterproof switch device for effectively adsorbing the moisture in the equipment to avoid electric leakage, which has the advantage of continuously self-adsorbing the moisture in the switch to avoid the electric leakage of the equipment, and solves the problems that the common waterproof switch cannot complete the self-dehumidification function, and if the humidity in the air is too high, whether the electric leakage of the waterproof switch occurs or not cannot be ensured, so that the existing waterproof switch has great potential safety hazards.
(II) technical scheme
In order to achieve the purpose of avoiding the electric leakage of equipment by moisture in the continuous self-adsorption switch, the invention provides the following technical scheme: a waterproof switch device capable of effectively adsorbing moisture in equipment and avoiding electric leakage comprises a shell, wherein a first baffle is riveted at the top of the right side of the shell, a storage cavity is arranged in the top of the shell, a first spring is fixedly connected at the bottom of the interior of the storage cavity, an arc-shaped support plate is fixedly connected at one side of the first spring, which is far away from the storage cavity, a movable contact is fixedly connected at the top of the arc-shaped support plate, a fixed contact is fixedly connected at the top of the interior of the storage cavity, a water suction cavity is arranged at the bottom of the storage cavity, a cross-shaped baffle is slidably connected in the interior of the top of the water suction cavity, a first rotating rod is fixedly connected at the right side of the cross-shaped baffle, a first bevel gear is fixedly connected at the right side of the first rotating rod, a second bevel gear is, one side welding that second bevel gear was kept away from to the second dwang has third bevel gear, the back meshing of third bevel gear bottom is connected with fourth bevel gear, fourth bevel gear's right side transmission is connected with the belt, one side transmission that fourth bevel gear was kept away from to the belt is connected with the axis of rotation, the outer wall fixedly connected with rolling disc of axis of rotation, the chute has been seted up at the top of rolling disc, the outer wall welding at axis of rotation back has the ratchet, the inside fixedly connected with second spring of casing, the top fixedly connected with slider of second spring, the top fixedly connected with of slider supports the stopper, the bottom in chamber that absorbs water is provided with retrieves the chamber, the right side swing joint in chamber has the second baffle.
Preferably, the left side swing joint of first baffle is on the right side of storage cavity, and the right side welding of first baffle has the handle.
Preferably, the middle height of the arc-shaped supporting plate is lower than the heights of the two sides of the arc-shaped supporting plate, and the discharge hole in the middle of the arc-shaped supporting plate is positioned right above the water suction cavity.
Preferably, the fixed contact is right above the movable contact, and the fixed contact, the movable contact and the buzzer are in electrical connection, and the buzzer is not shown in the figure.
Preferably, four chutes are uniformly formed in the rotating disc, the left side of the chute is lower than the right side of the chute, and the chutes are arranged under the cross-shaped baffle.
Preferably, the outer wall of the ratchet wheel has four ratchet teeth, and the four ratchet teeth are uniformly distributed on the outer wall of the ratchet wheel.
Preferably, the top of the supporting limiting block is connected below the ratchet at the left side of the ratchet in a sliding mode.
Preferably, the second baffle is riveted inside the bottom of the shell, and a handle is welded on the right side of the second baffle.
(III) advantageous effects
Compared with the prior art, the invention provides the waterproof switch device which can effectively adsorb moisture in equipment and avoid electric leakage, and has the following beneficial effects:
1. this waterproof switch device of electric leakage is avoided to moisture among effective adsorption equipment, through rolling disc and cross baffle, the storage cavity, the cooperation of chute is used, the weight of dehumidification ball can increase along with the increase of time, the rolling disc can drive ninety degrees of chute anticlockwise rotation this moment, further make ninety degrees of cross baffle anticlockwise rotation, the inside of chute can be entered into again to the dehumidification ball of storage cavity inside this moment, thereby reached the effect that equipment electric leakage was avoided to moisture among the continuous oneself adsorption equipment switch.
2. This waterproof switch device of electric leakage is avoided to moisture among the effective adsorption equipment uses through the cooperation of arc backup pad and movable contact, fixed contact, first spring, uses totally the back when the dehumidification ball of storage intracavity portion, and the arc backup pad can the upward movement under the effect of first spring this moment, further makes fixed contact and movable contact, and buzzer siren can send the alarm sound this moment to reached and reminded people to add the effect of new dehumidification ball.
Drawings
FIG. 1 is a schematic front view of the overall structure of the present invention;
FIG. 2 is a schematic front view of a cross-shaped baffle structure according to the present invention;
FIG. 3 is a front view of the ratchet structure of the present invention;
FIG. 4 is an enlarged view of the structure A of FIG. 1 according to the present invention.
In the figure: 1. a housing; 2. a first baffle plate; 3. a material storage cavity; 4. a first spring; 5. an arc-shaped support plate; 6. a movable contact; 7. a fixed contact; 8. a water suction cavity; 9. a cross-shaped baffle plate; 10. a first rotating lever; 11. a first bevel gear; 12. a second bevel gear; 13. a second rotating lever; 14. a third bevel gear; 15. a fourth bevel gear; 16. a belt; 17. a rotating shaft; 18. rotating the disc; 19. a chute; 20. a ratchet wheel; 21. a second spring; 22. a slider; 23. a support limit block; 24. a recovery chamber; 25. a second baffle.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-4, a waterproof switch device for effectively adsorbing moisture in equipment to avoid electric leakage comprises a housing 1, a first baffle 2 is riveted on the top of the right side of the housing 1, the left side of the first baffle 2 is movably connected on the right side of a material storage chamber 3, a handle is welded on the right side of the first baffle 2, the material storage chamber 3 is arranged inside the top of the housing 1, a first spring 4 is fixedly connected on the bottom of the inside of the material storage chamber 3, an arc-shaped support plate 5 is fixedly connected on one side of the first spring 4 away from the material storage chamber 3, the middle height of the arc-shaped support plate 5 is lower than the height of the two sides of the arc-shaped support plate, a discharge port in the middle of the arc-shaped support plate 5 is right above a water suction chamber 8, a movable contact 6 is fixedly connected on the top of the arc-shaped support plate 5, a fixed contact 7 is fixedly connected on the top of the inside of the, the buzzer is not shown in the figure, the bottom of the material storage cavity 3 is provided with a water suction cavity 8, the inside of the top of the water suction cavity 8 is connected with a cross baffle 9 in a sliding manner, the right side of the cross baffle 9 is fixedly connected with a first rotating rod 10, the right side of the first rotating rod 10 is fixedly connected with a first bevel gear 11, the bottom of the first bevel gear 11 is connected with a second bevel gear 12 in a meshing manner, the bottom of the second bevel gear 12 is welded with a second rotating rod 13, one side of the second rotating rod 13 far away from the second bevel gear 12 is welded with a third bevel gear 14, the back of the bottom of the third bevel gear 14 is connected with a fourth bevel gear 15 in a meshing manner, the right side of the fourth bevel gear 15 is connected with a belt 16 in a driving manner, one side of the belt 16 far away from the fourth bevel gear 15 is connected with a rotating shaft 17 in a, and chute 19 is under cross baffle 9, chute 19 has been seted up at the top of rolling disc 18, the outer wall welding of axis of rotation 17 back has ratchet 20, four ratchets totally of ratchet 20's outer wall, and the even distribution of these four ratchets is at ratchet 20's outer wall, the inside fixedly connected with second spring 21 of casing 1, the top fixedly connected with slider 22 of second spring 21, slider 22's top fixedly connected with supports stopper 23, the top sliding connection who supports stopper 23 is in the below of ratchet 20 left side ratchet, the bottom in chamber 8 that absorbs water is provided with retrieves chamber 24, the right side swing joint who retrieves chamber 24 has second baffle 25, second baffle 25 is riveted in the inside of casing 1 bottom, and the right side welding of second baffle 25 has the handle.
Working principle before starting to work, the dehumidifying pill is firstly put into the storage chamber 3 and the chute 19 at the top of the rotating disc 18.
Referring to fig. 2 for details, when moisture in the inside of the device is large, the moisture in the inside of the device is adsorbed by the dehumidifying pills, the weight of the dehumidifying pills is increased, because the left side of the inside of the chute 19 is lower than the right side of the inside of the chute 19, when the moisture removing pills reach a certain weight, the chute 19 rotates counterclockwise, because the chute 19 is formed at the top of the rotating disc 18, the rotating disc 18 also rotates counterclockwise, and because the rotating disc 18 is fixedly connected to the outer wall of the rotating shaft 17, the rotating shaft 17 also rotates counterclockwise.
And because the ratchet wheel 20 is welded on the outer wall of the back of the rotating shaft 17, the ratchet wheel 20 can also rotate anticlockwise at the moment, and because the inside of the shell 1 is fixedly connected with the second spring 21, the top of the second spring 21 is fixedly connected with the sliding block 22, the top of the sliding block 22 is fixedly connected with the supporting and limiting block 23, the top of the supporting and limiting block 23 is slidably connected below the left-side ratchet of the ratchet wheel 20, at this time, the ratchet 20 moves counterclockwise against the elastic supporting force of the second spring 21, and because the outer wall of the ratchet 20 has four ratchet teeth, and the four ratchet teeth are uniformly distributed on the outer wall of the ratchet 20, so that when the ratchet 20 rotates ninety degrees counterclockwise, the support stopper 23 will again abut against the ratchet teeth on the outer wall of the ratchet 20 under the action of the second spring 21, so that the ratchet wheel 20 can only rotate ninety degrees counterclockwise at a time, and at this time, the rotating shaft 17 and the rotating disk 18 can only rotate ninety degrees counterclockwise at a time.
Because the right side of the fourth bevel gear 15 is in transmission connection with a belt 16, and the side of the belt 16 far from the fourth bevel gear 15 is in transmission connection with a rotating shaft 17, at this time, the fourth bevel gear 15 also rotates by ninety degrees in an anticlockwise direction, because the back of the bottom of the third bevel gear 14 is in meshing connection with the fourth bevel gear 15, at this time, the third bevel gear 14 also rotates by ninety degrees in an anticlockwise direction, because the bottom of the second bevel gear 12 is welded with a second rotating rod 13, and the side of the second rotating rod 13 far from the second bevel gear 12 is welded with a third bevel gear 14, at this time, the second bevel gear 12 also rotates by ninety degrees in an anticlockwise direction, because the right side of the first rotating rod 10 is fixedly connected with the first bevel gear 11, and the bottom of the first bevel gear 11 is in meshing connection with the second bevel gear 12, at this time, the first rotating rod 10 also rotates, the cross-shaped baffle 9 will also be rotated ninety degrees counterclockwise at this time.
Referring to fig. 1 in detail, because the inside of the top of the water suction cavity 8 is slidably connected with a cross-shaped baffle 9, therefore, the cross-shaped baffle 9 can rotate ninety degrees in the top of the water suction cavity 8 anticlockwise, and because the bottom of the storage cavity 3 is fixedly connected with the first spring 4, one side of the first spring 4 far away from the storage cavity 3 is fixedly connected with the arc-shaped support plate 5, the middle height of the arc-shaped support plate 5 is lower than the height of the two sides thereof, and the discharge hole in the middle of the arc-shaped support plate 5 is right above the water suction cavity 8, therefore, the dehumidifying pills in the storage cavity 3 can enter the water suction cavity 8 through the cross-shaped baffle 9, and because the rotating disc 18 is uniformly provided with four inclined grooves 19, the inclined grooves 19 are arranged right below the cross-shaped baffle 9, the chute 19 on the right side of the rotating disc 18 will now move directly under the cross-shaped baffle 9, and the clean dehumidifying pills will now enter the interior of the chute 19.
Because the bottom in chamber 8 that absorbs water is provided with again and retrieves chamber 24, so the dehumidification ball after the inside use of chute 19 this moment can drop the inside of retrieving chamber 24, again because the right side swing joint who retrieves chamber 24 has second baffle 25, second baffle 25 riveting is in the inside of casing 1 bottom, and the right side welding of second baffle 25 has the handle, so the pulling handle is opened second baffle 25 this moment and just can be collected the dehumidification ball after the use, thereby reached the moisture in the continuous self-absorption switch and avoided the effect of equipment electric leakage.
Please refer to fig. 4 for details, after the dehumidifying pill inside the storage chamber 3 is used completely, because the first spring 4 of the bottom fixedly connected with inside the storage chamber 3, one side fixedly connected with arc backup pad 5 of the storage chamber 3 is kept away from to the first spring 4, so the arc backup pad 5 can move up this moment, because the top fixedly connected with movable contact 6 of arc backup pad 5 again, so movable contact 6 also can move up this moment, because the top fixedly connected with fixed contact 7 inside the storage chamber 3, fixed contact 7 is directly over movable contact 6, so fixed contact 7 can contact movable contact 6 this moment, because fixed contact 7 has electric connection with movable contact 6 and buzzer again, so the buzzer siren can send out the alarm sound this moment, thereby reached and reminded people to add the effect of new dehumidifying pill.
Because the top on casing 1 right side is riveted with first baffle 2 again, the left side swing joint of first baffle 2 is on the right side of storage cavity 3, and the right side welding of first baffle 2 has the handle, so pulling the handle this moment makes the bottom of first baffle 2 move right, just can add the inside that new dehumidification ball enters into storage cavity 3 this moment, and the addition mode is convenient.
To sum up, this effective adsorption equipment in moisture avoid the waterproof switching device of electric leakage, the weight of dehumidification ball can increase along with the increase of time, and rolling disc 18 can drive chute 19 anticlockwise rotation ninety degrees this moment, further makes cross baffle 9 anticlockwise rotation ninety degrees, and the inside dehumidification ball of storage cavity 3 inside can enter into chute 19's inside again this moment to the effect of equipment electric leakage is avoided to the moisture in having reached continuous oneself's adsorption equipment switch.
When the inside dehumidification pill of storage chamber 3 uses totally the back, arc backup pad 5 can the upward movement under the effect of first spring 4 this moment, further makes fixed contact 7 and movable contact 6 contact, and buzzer siren can send the alarm sound this moment to reached and reminded people to add the effect of new dehumidification pill.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (8)
1. A waterproof switch device capable of effectively adsorbing moisture in equipment to avoid electric leakage comprises a housing (1), and is characterized in that: the top on the right side of the shell (1) is riveted with a first baffle (2), a storage cavity (3) is arranged inside the top of the shell (1), a first spring (4) is fixedly connected to the bottom inside the storage cavity (3), an arc-shaped support plate (5) is fixedly connected to one side, away from the storage cavity (3), of the first spring (4), a movable contact (6) is fixedly connected to the top of the arc-shaped support plate (5), a fixed contact (7) is fixedly connected to the top inside the storage cavity (3), a water absorption cavity (8) is arranged at the bottom of the storage cavity (3), a cross-shaped baffle (9) is slidably connected to the inside of the top of the water absorption cavity (8), a first rotating rod (10) is fixedly connected to the right side of the cross-shaped baffle (9), and a first bevel gear (11) is fixedly connected to the right side of the, the bottom of the first bevel gear (11) is connected with a second bevel gear (12) in a meshed manner, the bottom of the second bevel gear (12) is welded with a second rotating rod (13), one side, away from the second bevel gear (12), of the second rotating rod (13) is welded with a third bevel gear (14), the back of the bottom of the third bevel gear (14) is connected with a fourth bevel gear (15) in a meshed manner, the right side of the fourth bevel gear (15) is connected with a belt (16) in a transmission manner, one side, away from the fourth bevel gear (15), of the belt (16) is connected with a rotating shaft (17) in a transmission manner, the outer wall of the rotating shaft (17) is fixedly connected with a rotating disc (18), the top of the rotating disc (18) is provided with a chute (19), the outer wall of the back of the rotating shaft (17) is welded with a, the top fixedly connected with slider (22) of second spring (21), the top fixedly connected with of slider (22) supports stopper (23), the bottom in chamber (8) that absorbs water is provided with retrieves chamber (24), the right side swing joint in chamber (24) of retrieving has second baffle (25).
2. The waterproof switch device for preventing electric leakage by effectively adsorbing moisture in equipment as claimed in claim 1, wherein: the left side swing joint of first baffle (2) is on the right side of storage cavity (3), and the right side welding of first baffle (2) has the handle.
3. The waterproof switch device for preventing electric leakage by effectively adsorbing moisture in equipment as claimed in claim 1, wherein: the middle height of the arc-shaped supporting plate (5) is lower than the heights of the two sides of the arc-shaped supporting plate, and the discharge hole in the middle of the arc-shaped supporting plate (5) is right above the water suction cavity (8).
4. The waterproof switch device for preventing electric leakage by effectively adsorbing moisture in equipment as claimed in claim 1, wherein: the fixed contact (7) is arranged right above the movable contact (6), the fixed contact (7), the movable contact (6) and the buzzer are electrically connected, and the buzzer is not shown in the figure.
5. The waterproof switch device for preventing electric leakage by effectively adsorbing moisture in equipment as claimed in claim 1, wherein: four chutes (19) are uniformly formed in the rotating disc (18), the left side of the interior of each chute (19) is lower than the right side of the interior of the chute, and each chute (19) is located right below the cross-shaped baffle (9).
6. The waterproof switch device for preventing electric leakage by effectively adsorbing moisture in equipment as claimed in claim 1, wherein: the outer wall of the ratchet wheel (20) is provided with four ratchet teeth, and the four ratchet teeth are uniformly distributed on the outer wall of the ratchet wheel (20).
7. The waterproof switch device for preventing electric leakage by effectively adsorbing moisture in equipment as claimed in claim 1, wherein: the top of the supporting limiting block (23) is connected below the ratchet at the left side of the ratchet wheel (20) in a sliding manner.
8. The waterproof switch device for preventing electric leakage by effectively adsorbing moisture in equipment as claimed in claim 1, wherein: the second baffle (25) is riveted inside the bottom of the shell (1), and a handle is welded on the right side of the second baffle (25).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110221643.9A CN113012958A (en) | 2021-02-27 | 2021-02-27 | Waterproof switch device capable of effectively adsorbing moisture in equipment and avoiding electric leakage |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110221643.9A CN113012958A (en) | 2021-02-27 | 2021-02-27 | Waterproof switch device capable of effectively adsorbing moisture in equipment and avoiding electric leakage |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113012958A true CN113012958A (en) | 2021-06-22 |
Family
ID=76386852
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110221643.9A Withdrawn CN113012958A (en) | 2021-02-27 | 2021-02-27 | Waterproof switch device capable of effectively adsorbing moisture in equipment and avoiding electric leakage |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113012958A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114284996A (en) * | 2021-12-16 | 2022-04-05 | 广州亿沃新能源科技有限公司 | Abnormal heating protection device for lead |
-
2021
- 2021-02-27 CN CN202110221643.9A patent/CN113012958A/en not_active Withdrawn
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114284996A (en) * | 2021-12-16 | 2022-04-05 | 广州亿沃新能源科技有限公司 | Abnormal heating protection device for lead |
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Application publication date: 20210622 |
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| WW01 | Invention patent application withdrawn after publication |