CN109339594B - Electromagnetic lock for refrigerator - Google Patents
Electromagnetic lock for refrigerator Download PDFInfo
- Publication number
- CN109339594B CN109339594B CN201811210220.1A CN201811210220A CN109339594B CN 109339594 B CN109339594 B CN 109339594B CN 201811210220 A CN201811210220 A CN 201811210220A CN 109339594 B CN109339594 B CN 109339594B
- Authority
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- China
- Prior art keywords
- silica gel
- iron core
- lock
- elastic silica
- locking
- Prior art date
- 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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Links
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 61
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 58
- 239000000741 silica gel Substances 0.000 claims abstract description 58
- 229910002027 silica gel Inorganic materials 0.000 claims abstract description 58
- 229920003023 plastic Polymers 0.000 claims abstract description 19
- 239000004033 plastic Substances 0.000 claims abstract description 19
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 15
- 239000002131 composite material Substances 0.000 claims abstract description 5
- 230000001939 inductive effect Effects 0.000 claims description 14
- 230000006698 induction Effects 0.000 claims description 7
- 238000000034 method Methods 0.000 claims description 7
- 238000007906 compression Methods 0.000 claims description 3
- 239000002274 desiccant Substances 0.000 claims description 3
- 239000004585 electronic sealant Substances 0.000 claims description 3
- 239000000565 sealant Substances 0.000 claims description 3
- 238000007789 sealing Methods 0.000 claims description 3
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 10
- 230000007797 corrosion Effects 0.000 description 6
- 238000005260 corrosion Methods 0.000 description 6
- 230000005494 condensation Effects 0.000 description 5
- 238000009833 condensation Methods 0.000 description 5
- 238000009434 installation Methods 0.000 description 3
- 229920006351 engineering plastic Polymers 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 206010063385 Intellectualisation Diseases 0.000 description 1
- 239000002775 capsule Substances 0.000 description 1
- 239000000084 colloidal system Substances 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
- E05B65/00—Locks or fastenings for special use
- E05B65/0042—For refrigerators or cold rooms
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
- E05B15/00—Other details of locks; Parts for engagement by bolts of fastening devices
- E05B15/16—Use of special materials for parts of locks
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
- E05B17/00—Accessories in connection with locks
- E05B17/0016—Defrosting, e.g. heating devices
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
- E05B47/00—Operating or controlling locks or other fastening devices by electric or magnetic means
- E05B47/0001—Operating or controlling locks or other fastening devices by electric or magnetic means with electric actuators; Constructional features thereof
- E05B47/0002—Operating or controlling locks or other fastening devices by electric or magnetic means with electric actuators; Constructional features thereof with electromagnets
- E05B47/0003—Operating or controlling locks or other fastening devices by electric or magnetic means with electric actuators; Constructional features thereof with electromagnets having a movable core
- E05B47/0004—Operating or controlling locks or other fastening devices by electric or magnetic means with electric actuators; Constructional features thereof with electromagnets having a movable core said core being linearly movable
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
- E05B47/00—Operating or controlling locks or other fastening devices by electric or magnetic means
- E05B47/02—Movement of the bolt by electromagnetic means; Adaptation of locks, latches, or parts thereof, for movement of the bolt by electromagnetic means
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Thermal Sciences (AREA)
- Electromagnets (AREA)
- Soft Magnetic Materials (AREA)
Abstract
The invention relates to an electromagnetic lock of a refrigerated cabinet, which comprises a lock shell, a coil control assembly and a locking and unlocking mechanism, and is characterized in that the coil control assembly comprises a coil assembly, an elastic silica gel body and a movable iron core, wherein the movable iron core adopts a iron-plastic composite structure and comprises an iron core part which is arranged in the elastic silica gel body and interacts with the coil assembly, and a plastic rod part which extends and is exposed out of the elastic silica gel body; the elastic silica gel is configured between the coil assembly and the movable iron core, and the iron core part is coated in the coil assembly, so that the iron core part is ensured not to be corroded due to external water vapor or frosting. The movable iron core adopts an iron-plastic composite structure, the iron core part of the movable iron core is arranged in the elastic silica gel body, the elastic silica gel body is arranged between the movable iron core and the coil assembly generating magnetic force in an isolated mode, the elastic silica gel body can play a role of ejecting the iron core, and can prevent external moist air from entering, so that the rust problem of the internal iron core caused by condensed water vapor or frosting is avoided.
Description
Technical Field
The invention relates to the field of locks, in particular to an electromagnetic lock for a refrigerated cabinet.
Background
Most of existing refrigerated cabinets use mechanical locks, but with the rapid development of the internet of things and intellectualization, demands for intelligent (remote) control of the locks on the refrigerated cabinets are becoming more and more urgent, but the electronic locks appearing on the market at present cannot meet the use requirements in low-temperature environments at all, and the main problem is that condensation water drops or frost on the surfaces of the locks in the low-temperature environments cause rapid corrosion, short circuits or false alarm signals to the locks which are frequently powered on and off.
Therefore, it is urgent to develop a new lock capable of solving the above problems.
Disclosure of Invention
The invention provides an electromagnetic lock of a refrigerated cabinet, which mainly solves the technical problems that an electromagnetic lock is easy to cause dew or frost to be condensed on a lock mechanism in a low-temperature environment, so that parts are rusted in advance and electronic devices are short-circuited or signals are wrongly reported.
The technical scheme adopted by the invention is as follows:
the electromagnetic lock of the refrigerated cabinet comprises a lock shell, and a coil control assembly and a locking and unlocking mechanism which are arranged in the lock shell, and is characterized in that the coil control assembly comprises a coil assembly 09 arranged in a coil groove 01-08, an elastic silica gel body 10 and a movable iron core 11, wherein the movable iron core adopts an iron-plastic composite structure and comprises an iron core part 11-02 which is arranged in the elastic silica gel body 10 and interacts with the coil assembly 09 in a magnetic force manner, and a plastic rod part 11-01 which extends out of the elastic silica gel body 10 and is exposed; the iron core part 11-02 adopts electric pure iron, and the plastic rod part 11-01 adopts engineering plastic, so that the iron core is prevented from contacting water vapor to be oxidized and corroded rapidly. The elastic silica gel body 10 is arranged between the coil assembly 09 and the movable iron core 11, and the iron core part 11-02 is coated inside the elastic silica gel body 10, and the elastic silica gel body 10 stretches and contracts simultaneously when the movable iron core 11 acts, so that the iron core part 11-02 is ensured not to be corroded due to external water vapor or frosting.
The elastic silica gel body 10 is a hollow capsule body with a through hole 10-01 at the upper part and an air hole 10-05 at the lower part, a flange plate 10-04 is arranged at the periphery of the lower part, and the elastic silica gel body is fixed with the outside through the flange plate 10-04.
The plastic rod 11-01 of the movable iron core 11 is provided with a concave ring 11-03, the concave ring 11-03 is matched with the through hole 10-01 of the elastic silica gel body 10, and the through hole 10-01 allows the plastic rod 11-01 of the movable iron core 11 to pass through and be clamped at the concave ring 11-03.
The coil assembly 09 and the electric contact thereof are filled in the coil grooves 01-08 preset in the lock shell by adopting electronic sealant, so that the coil assembly 09 is isolated from air and water, and the phenomenon of rapid damage caused by the coil working under the condition of condensation or frosting is effectively solved.
One side of the coil groove 01-08 is provided with an air chamber 01-10 communicated with the coil groove, the elastic silica gel body 10 is fixed on the side wall of the coil groove 01-08 through a flange plate 10-04, and the lower air hole 10-05 is communicated with the air chamber 01-10.
In the compression process of the elastic silica gel body 10, air in the elastic silica gel body 10 enters the air chamber 01-10 through the air holes 10-05 at the lower part of the elastic silica gel body, and in the rebound process of the elastic silica gel body 10, dry air in the air chamber 01-10 is sucked into the elastic silica gel body 10 reversely through the air holes 10-05 at the lower part of the air chamber. Another function of the air chambers 01-10 is to store a quantity of desiccant, thereby maintaining the air inside the air chambers 01-10 in a dry state for a long period of time.
The locking and unlocking mechanism comprises a lock hook 02 rotatably installed in a lock shell through a lock hook torsion spring 03 and a locking hook 13 rotatably installed in the lock shell through a rotating shaft 12, wherein the lock hook 02 is provided with a lock nose groove 02-01 for limiting the release of a lock nose after locking and a locking groove 02-06 meshed with the locking hook 13, and the locking hook 13 is provided with a hook body 13-01 meshed and matched with the locking groove 02-06 of the lock hook 02 and a shifting lever linked with a movable magnet 11 of the coil control assembly.
An inductive switch 06 and a swinging rod 04 matched with the inductive switch 06 are arranged in the lock shell; the swing rod 04 is rotatably arranged in the lock shell through a swing rod torsion spring 05 and is provided with a touch rod 04-01, one end of which is controlled by a rotating lug 02-04 at the lower part of the lock hook 02, and a sensing end 04-02, the other end of which is matched with the sensing switch 06; the inside of the induction end 04-02 is sealed with a permanent magnet which is arranged in the blind hole of the induction end and is isolated and sealed with the outside air through sealant; the inductive switch 06 is composed of an inductive element, a sealing shell 06-01 and a lead 06-02, and is a completely sealed structure. When the lock hook 02 and the lock hook 13 are meshed with each other, namely in a locking state, the sensing end 04-02 of the swing rod 04 moves to the position of the sensing switch 06, so that the sensing switch 06 generates a locking signal; when the lock hook 02 and the locking hook 13 are disengaged, namely in an unlocking state, the swing rod 04 rotates under the action of the swing rod torsion spring 05, so that the sensing end 04-02 is far away from the sensing switch 06, and the sensing switch generates an unlocking signal.
The electromagnetic lock of the refrigerated cabinet mainly solves the problems of rapid corrosion, short circuit or false alarm caused by condensation water drops or frost on the surface of the lock in a low-temperature environment, all exposed parts of the lock body are made of plastic or high-quality stainless steel materials, and the corrosion resistance is improved. Through set up the air chamber in the lock shell to be linked together with the elastic silica gel that the built-in iron core is equipped with the air chamber, make the elastic silica gel body with inside air impress the air chamber when the compression, the elastic silica gel body is in the air chamber dry gas inhalation body again when the resilience, so guarantee to move the iron core and be in dry air environment all the time, promoted the corrosion resistance of lock body by a wide margin.
Drawings
Fig. 1: the electromagnetic lock of the refrigerated cabinet has an overall structure schematic diagram;
fig. 2a: a bottom shell structure schematic diagram;
fig. 2b: FIG. 2a is a top view;
fig. 3: a latch hook structure schematic diagram;
fig. 4: a swing rod structure schematic diagram;
fig. 5: a structural schematic diagram of the inductive switch;
fig. 6a: an inner cover plate structure schematic diagram;
fig. 6b: FIG. 6a is a side cross-sectional view;
fig. 7: a coil assembly structure schematic;
fig. 8: schematic structural diagram of elastic silica gel;
fig. 9: a moving magnet structure schematic diagram;
fig. 10: the locking hook structure is schematically shown;
fig. 11: a schematic diagram of the outer cover plate structure;
fig. 12: the invention discloses a lock unlocking state structure schematic diagram.
Detailed Description
The structural components and design principles of the electromagnetic lock for a refrigerator and the operation process of the electromagnetic lock according to the present invention will be further described in detail below with reference to the accompanying drawings, so that those skilled in the art will understand the present invention more deeply.
Examples
An electromagnetic lock of a refrigerated cabinet comprises a lock shell formed by a bottom shell 1 and an outer cover plate 14, wherein a lock notch groove for accommodating a lock nose is formed in the lock shell, and a coil control assembly and a locking and unlocking mechanism are respectively arranged in the lock shell; the coil control assembly consists of a coil assembly 09, an elastic silica gel body 10 and a movable iron core 11, the locking and unlocking mechanism comprises a lock hook 02 and a locking hook 13 which are rotatably arranged in a lock shell body through a torsion spring and are matched with each other, the lock hook 02 is provided with a lock nose groove 02-01 for limiting the release of a lock nose after locking and a locking groove 02-06 engaged with the locking hook 13 during locking, and the locking hook 13 is provided with a hook body 13-01 engaged with the locking groove 02-06 of the lock hook 02 during locking and a deflector rod 13-03 linked with the movable iron core 11 of the coil control assembly.
The following describes the specific structure of each part constituting the electromagnetic lock of the refrigerator:
the lock bottom shell 01, the lock hook 02, the lock hook torsion spring 03, the swing rod 04, the swing rod torsion spring 05, the inductive switch 06, the inner cover plate 07, the inner cover screw 08, the coil assembly 09, the elastic silica gel body 10, the movable iron core 11, the rotating shaft 12, the locking hook 13, the outer cover plate 14 and the outer cover plate screw 15. (FIG. 1)
The lock bottom shell 01 is structurally characterized by comprising a first screw hole 01-01 for being installed and fixed with a cabinet body, a second screw hole 01-02 for installing and fixing an outer cover plate, a notch 01-03 for accommodating a lock nose, a boss 01-04 with holes for installing a lock hook rotating shaft, a stepped shaft 01-05 for installing a swing rod assembly, a boss 01-06 for installing an inductive switch, a fixed and limited wiring groove 01-07, a coil groove 01-08 for installing and accommodating a coil, a third screw hole 01-09 for fixing an inner cover, an air chamber 01-10 for storing dry air, an emergency opening 01-11, a boss 01-12 with holes for installing a locking hook rotating shaft, and a round hole 01-13 for installing elastic silica gel and allowing a movable iron core to pass through, wherein the round hole 01-13 is communicated with the air chamber 01-10. (FIG. 2)
The structure of the lock hook 02 comprises a lock nose groove 02-01 for accommodating a lock nose, a round hole 02-02 assembled on a lock hook rotating shaft and rotating around the lock nose, a hanging hole 02-03 for accommodating a lock hook torsion spring, a rotating lug 02-04 for poking a swing rod assembly, a 0 shaft sleeve 2-05 and a locking groove 02-06 for locking the lock hook. (FIG. 3)
The torsion spring 03 of the lock hook has the function of generating a force for rotating the lock hook anticlockwise, when unlocking, the locking hook 13 is separated from the lock hook 02, the lock hook 02 rotates anticlockwise, and the lock nose is ejected out of the lock nose groove 02-01.
The structure of the swing rod 04 comprises a touch rod 04-01, a sensing end 04-02 and a mounting hole 04-03. The permanent magnet is arranged in the blind hole of the induction end 04-02 and is isolated from air by sealant. (FIG. 4)
The swing rod torsion spring 05 is used for generating a force for enabling the swing rod 04 to rotate clockwise, so that the left end of the swing rod 04 is forced to be always in contact with the lock hook 02.
The inductive switch 06 is composed of an inductive element, a sealing shell 06-01 and a lead 06-02, is a completely sealed structure, is completely isolated from air or water, and avoids the phenomenon of short circuit or false signal caused by condensed water vapor or frost. (FIG. 5)
The structure of the inner cover 07 comprises a cover plate 07-01, a mounting hole 07-02 and a pressing opening 07-03, and after the inner cover is mounted, the air in the air chamber is separated from the outside, so that the air in the air chamber is always dried. (FIG. 6)
The coil assembly 09 structure comprises a coil framework 09-01, a coil 09-02, a fixed core 09-03 and a lead 09-04, wherein the coil main body is placed in a coil groove 01-08 on a bottom shell during installation, the lead is led out along the wiring groove 01-07, and the coil is filled with colloid and sealed in the coil groove 01-08 so as to be isolated from air and water, thus the phenomenon of rapid damage caused by the coil working under the condition of condensation or frost can be effectively solved. (FIG. 7)
The elastic silica gel 10 comprises a through hole 10-01, an elastic body 10-02, an inner hole 10-03, a flange plate 10-04 and an air hole 10-05. The through hole 10-01 allows the plastic rod 11-01 of the movable iron core 11 to pass through and be clamped in the concave ring 11-03 of the iron core, so that water vapor or condensation outside the iron core is prevented from flowing into the wire framework along the iron core; the elastic body 10-02 can automatically return to the original shape after being compressed, and can be ejected out after the iron core is adsorbed; the inner hole 10-03 is an iron core movement channel; the flange plate 10-04 plays a role in installation and positioning; the air holes 10-05 function as gas passages when the elastic body is compressed or sprung. (FIG. 8)
The movable iron core 11 comprises a plastic rod part 11-01, an iron core part 11-02 and a concave ring 11-03. After installation, the core part 11-02 is covered with the elastic silica gel body 10 in an air environment where the inside is dry, and the plastic rod part 11-01 is leaked outside the silica gel body, so that the rust resistance can be further improved. (FIG. 9)
The latch hook 13 comprises a hook body 13-01, a mounting hole 13-02 rotating around the hook body, a deflector rod 13-03 and a shaft sleeve 13-04. (FIG. 10)
The outer cover plate 14 structure comprises a screw hole 14-01 for being installed and fixed with a cabinet body, a screw hole 14-02 for installing and fixing the outer cover plate, a wiring groove 14-03, a boss 14-04 for limiting an inductive switch, a boss 14-05 for limiting a swinging rod assembly, a boss 14-06 with holes for limiting a lock hook and a rotating shaft, a notch 14-07 for accommodating a lock nose and an emergency opening 14-08. (FIG. 11)
The invention relates to an electromagnetic lock of a refrigerated cabinet, which has the following working principle and working process:
when the lock is locked, the lock nose enters into the lock nose groove 02-01 of the lock hook 02 through the lock mouth groove of the lock shell, the lock hook 02 is pushed to rotate clockwise, the locking hook 13 on one side of the lock hook 02 is pushed by the lock hook 02 to also swing clockwise in the rotating process of the lock hook 02, when the lock hook 02 rotates to a certain angle, the deflector 13-03 at the end part of the locking hook 13 is jacked up under the elastic action of the elastic silica gel body 10, the locking hook 13 rotates until the locking groove 02-06 on the lock hook 02 is meshed with the hook body 13-01 on the locking hook 13, and the lock hook 02 is hooked by the locking hook 13 to finish locking at the moment. In the locking process, a rotating lug 02-04 at the lower end of the lock hook 02 presses the swing rod 04 to rotate anticlockwise, a touch rod 04-01 of the swing rod 04 is pressed downwards, a sensing end 04-02 at the other side of the swing rod 04 is lifted upwards, after locking, the sensing end 04-02 of the swing rod 04 moves to a position close to the sensing switch 06, and the sensing switch 06 immediately generates a locking signal.
When unlocking, the coil assembly 09 generates magnetic force to adsorb the movable iron core 11 in the elastic silica gel body 10, and the movable iron core 11 moves downwards and drives the deflector rod 13-03 of the locking hook 13 downwards, so that the locking hook 13 swings clockwise until the locking hook is disengaged from the locking hook 02, the locking hook 02 rotates anticlockwise under the action of the locking hook torsion spring 03, and the locking nose is ejected into the locking nose groove 02-01, so that unlocking is completed. The movable iron core 11 moves downwards and compresses the elastic silica gel body 10, the elastic silica gel body 10 discharges the internal air into the air chamber 01-10 through the air hole 10-05 at the lower part, when the coil is electrified and disconnected, the movable iron core 11 pops up again under the action of the elastic silica gel body 10, and in the process of recovering the elastic silica gel body 10, the dry air in the air chamber 01-10 enters the inner cavity of the elastic silica gel body 10. This allows the core portion 11-01 of the movable core 11 to be always in a dry air environment, enhancing the rust resistance. When the lock is unlocked, along with the anticlockwise rotation of the lock hook 02, the swing rod 04 swings clockwise under the action of the swing rod torsion spring 05, and finally the sensing end 04-02 is completely separated from the action range of the sensing switch 06, and the sensing switch 06 generates an unlocking signal. (refer to FIG. 12)
Compared with the traditional electromagnetic lock, the electromagnetic lock of the refrigerated cabinet has the following outstanding advantages:
1. all exposed parts are made of plastic or high-quality stainless steel materials, so that the corrosion resistance is improved.
2. The movable iron core of the electromagnet adopts an iron-plastic composite structure, namely, the exposed part adopts engineering plastics, and the inside adopts electrician pure iron, so that the iron core is prevented from being in contact with water vapor to be oxidized and corroded rapidly.
3. The coil and the electric contact of the electromagnet are completely sealed by adopting electronic sealant, so that the contact with air is stopped, and the phenomenon of rapid oxidation is avoided.
4. The movable iron core of the electromagnet and the magnetic force are sealed with the air chamber wall of the bottom shell by adopting an elastic silica gel structural member, so that the effect of ejecting the iron core is achieved, the external moist air is prevented from entering, and the problem of rapid corrosion of the internal iron core caused by condensed water vapor or frosting is avoided.
5. The air chamber is communicated with the elastic silica gel body coated by the movable iron core outside the coil framework, and the air chamber is used for storing a certain amount of dry air, the elastic silica gel body presses the air in the silica gel body into the air chamber when being compressed, and the dry air in the air chamber enters the silica gel body when being ejected out, so that the inside of the movable iron core is always kept in the dry air environment. Another function of the air chamber is to allow a quantity of desiccant to be stored, keeping the air in the air chamber in a dry state for a long period of time.
6. The switch for sensing the locking state is completely sealed and isolated from air, so that short circuit or false signal caused by condensed water vapor or frost is avoided.
Claims (7)
1. The electromagnetic lock of the refrigerated cabinet comprises a lock shell, and a coil control assembly and a locking and unlocking mechanism which are arranged in the lock shell, and is characterized in that the coil control assembly comprises a coil assembly, an elastic silica gel body and a movable iron core, wherein the movable iron core adopts an iron-plastic composite structure and comprises an iron core part which is arranged in the elastic silica gel body and interacts with the coil assembly, and a plastic rod part which extends and is exposed out of the elastic silica gel body; the elastic silica gel is arranged between the coil assembly and the movable iron core, and the iron core part is coated in the coil assembly, so that the iron core part is prevented from being corroded due to external water vapor or frosting;
the coil component and the electric contact thereof are infused into a coil groove preset in the lock shell by adopting electronic sealant; the coil groove is provided with an air chamber communicated with the coil groove, the elastic silica gel body is fixed on the side wall of the coil groove through a flange plate, and an air hole at the lower part of the elastic silica gel body is communicated with the air chamber; in the compression process of the elastic silica gel, air in the elastic silica gel enters the air chamber through the air holes at the lower part of the elastic silica gel, and in the rebound process of the elastic silica gel, dry air in the air chamber is sucked into the elastic silica gel through the air holes at the lower part of the air chamber.
2. An electromagnetic lock for a refrigerated cabinet as set forth in claim 1 wherein
The elastic silica gel body is a hollow bag body with a through hole at the upper part and air holes at the lower part, and a flange plate is arranged at the periphery of the elastic silica gel body and is fixed by the flange plate.
3. An electromagnetic lock for a refrigerated cabinet as set forth in claim 2 wherein
The plastic rod part of the movable iron core is provided with a concave ring, the concave ring is matched with the through hole of the elastic silica gel body, and the through hole allows the plastic rod part of the movable iron core to pass through and be clamped at the concave ring of the plastic rod part of the movable iron core.
4. An electromagnetic lock for a refrigerated cabinet as set forth in claim 1 wherein
The air chamber is internally provided with a drying agent.
5. An electromagnetic lock for a refrigerated cabinet as set forth in claim 1 wherein
The locking unlocking mechanism comprises a lock hook and a locking hook which are rotatably arranged in the lock shell and are matched with each other, the lock hook is provided with a lock nose groove for limiting the lock nose from falling off after locking and a locking groove meshed with the locking hook, and the locking hook is provided with a hook body meshed and matched with the locking groove of the lock hook and a deflector rod linked with a moving magnet of the coil control assembly.
6. An electromagnetic lock for a refrigerated cabinet as set forth in claim 5 wherein
An inductive switch and a swing rod matched with the inductive switch are arranged in the lock shell; the swing rod is rotatably arranged in the lock shell and is provided with a touch rod one end of which is controlled by the lock hook and an induction end the other end of which is matched with the induction switch;
the inside of the induction end is sealed with a permanent magnet which is arranged in the blind hole of the induction end and is isolated and sealed with the outside air through sealant;
the inductive switch consists of an inductive element, a sealing shell and a wire, and is a completely sealed structure.
7. An electromagnetic lock for a refrigerated cabinet as set forth in claim 6 wherein
When the lock hook and the locking hook are meshed with each other, namely in a locking state, the sensing end of the swing rod moves to the position of the sensing switch, so that the sensing switch generates a locking signal; when the lock hook and the locking hook are disengaged, namely in an unlocking state, the swing rod rotates under the action of the swing rod torsion spring, so that the sensing end of the swing rod is far away from the sensing switch, and the sensing switch generates an unlocking signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811210220.1A CN109339594B (en) | 2018-10-17 | 2018-10-17 | Electromagnetic lock for refrigerator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811210220.1A CN109339594B (en) | 2018-10-17 | 2018-10-17 | Electromagnetic lock for refrigerator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109339594A CN109339594A (en) | 2019-02-15 |
| CN109339594B true CN109339594B (en) | 2024-02-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811210220.1A Active CN109339594B (en) | 2018-10-17 | 2018-10-17 | Electromagnetic lock for refrigerator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109339594B (en) |
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|---|---|---|---|---|
| JP2004332493A (en) * | 2003-05-12 | 2004-11-25 | Techno Excel Co Ltd | Simple and waterproof door latching device for electric appliance box door |
| CN201857822U (en) * | 2010-06-18 | 2011-06-08 | 佛山市顺德区顺佳利电器有限公司 | Novel electromagnetic lock |
| CN104576243A (en) * | 2013-10-22 | 2015-04-29 | 西门子公司 | Electromagnetic release |
| CN203910399U (en) * | 2014-05-15 | 2014-10-29 | 宁波兴茂电子科技有限公司 | Waterproof and dustproof electromagnet for automatic door-locks of subway trains |
| CN206035118U (en) * | 2016-04-22 | 2017-03-22 | 深圳市沃尔核材股份有限公司 | Dampproofing and waterproofing type electromagnetic lock |
| CN106522677A (en) * | 2016-11-17 | 2017-03-22 | 宁波智盈电子科技有限公司 | Waterproof dustproof electromagnetic lock capable of meeting requirement on long life and used for metro platform screen door |
| CN206581726U (en) * | 2017-03-09 | 2017-10-24 | 杭州东城电子有限公司 | A kind of improved electric control lock |
| CN209413528U (en) * | 2018-10-17 | 2019-09-20 | 烟台三环科技有限公司 | Refrigerator electromagnetic lock |
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| CN109339594A (en) | 2019-02-15 |
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