Anti-burning electromagnetic lock

Abstract

The utility model discloses an anti-burning electromagnetic lock which comprises a plug, a thermistor, an electromagnetic coil, a pull rod, a lock hook and a lock catch connected with the lock hook in a buckled mode. The plug, the thermistor and the electromagnetic coil are electrically connected in sequence; the electromagnetic coil is electrified to generate magnetic attraction force to attract the pull rod, and the pull rod drives the lock hook to move to open the lock catch; the thermistor is used for changing the conductor into the insulator after being electrified and heated to a first temperature threshold value to realize outage, the thermistor is also used for changing the insulator into the conductor after being cooled to a second temperature threshold value, and the first temperature threshold value is greater than the second temperature threshold value. When the anti-burning electromagnetic lock is applied to an exhaust valve in the energy storage industry, the electromagnetic coil and the thermistor are continuously electrified to work, so that the thermistor is electrified and heated to a first temperature threshold value and then is changed into an insulator from a conductor, power failure is realized, and the situation that the electromagnetic coil is continuously heated due to accumulated heat and finally exceeds the temperature-resistant bearing capacity of the electromagnetic coil is avoided; and burning of the electromagnetic coil is avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to lock structure technical field, especially a kind of anti-burn electromagnetic lock. BACKGROUND

[0002] The electromagnetic lock is the principle of using electricity to generate magnetism, when current passes through electromagnetic coil, electromagnetic coil will produce magnetic attraction force and attract lock hook to achieve the effect of unlocking. The application range of electromagnetic lock is very wide, for example, automatic vending cabinet, display cabinet, storage cabinet, storage cabinet, express cabinet and other storage cabinets are applied with electromagnetic lock.

[0003] When the traditional electromagnetic lock needs to be unlocked, the electromagnetic coil generates magnetic attraction force after instantaneous power supply, attracts pull rod movement, and pull rod drives lock hook rotation, so that lock catch is opened.

[0004] When electromagnetic lock is applied to exhaust valve in energy storage industry, since system power supply is continuous, and power supply is not turned off after instantaneous power supply, electromagnetic coil works continuously. With the continuous work of electromagnetic coil, the heat generated by electromagnetic coil gradually accumulates, so that electromagnetic coil continuously heats up, eventually exceeds the temperature resistance of electromagnetic coil, so that electromagnetic coil is burned out. INVENTION CONTENTS

[0005] Therefore, it is necessary to provide an anti-burn electromagnetic lock to solve the above problems.

[0006] An anti-burn electromagnetic lock, comprising a plug, a thermistor, an electromagnetic coil, a pull rod, a lock hook and a lock catch connected with the lock hook buckle;

[0007] The plug, the thermistor and the electromagnetic coil are electrically connected in sequence; the electromagnetic coil is used to generate magnetic attraction force to attract the pull rod movement, the pull rod drives the lock hook movement, so that the lock catch is opened; the thermistor is used to change from conductor to insulator after heating to first temperature threshold, realize power-off, the thermistor is also used to change from insulator to conductor after cooling to second temperature threshold, the first temperature threshold is greater than the second temperature threshold.

[0008] In one embodiment, the anti-burn electromagnetic lock further comprises a shell, the lock hook comprises a connecting portion, a first rotating portion and a first locking portion connected in sequence, the pull rod is connected with the connecting portion, the first rotating portion is rotatably connected with the shell, and the first locking portion is used for buckle connection with the lock catch.

[0009] In one embodiment, the pull rod is provided with a through hole, and the connecting portion is partially exposed outside after penetrating through the through hole.

[0010] In one embodiment, the lock catch comprises a second rotating part and a second locking part, the second rotating part is rotatably connected with the shell, and the second locking part is used for snap connection with the first locking part.

[0011] In one embodiment, the anti-burning electromagnetic lock further comprises a reset member, and the reset member is connected with the second rotating part and the shell respectively.

[0012] In one embodiment, the reset member is a torsion spring, and the torsion spring is elastically connected with the second rotating part and the shell respectively.

[0013] In one embodiment, the first temperature threshold is 60-200℃, and the second temperature threshold is 20-80℃.

[0014] In one embodiment, the anti-burning electromagnetic lock further comprises a signal feedback switch arranged in the shell and electrically connected with the plug.

[0015] In one embodiment, the pull rod is arranged at one end of the electromagnetic coil, and the thermistor and the electromagnetic coil are arranged in the shell.

[0016] In one embodiment, the anti-burning electromagnetic lock further comprises a glass sleeve, and the plug, the glass sleeve and the shell are sequentially connected.

[0017] When the anti-burning electromagnetic lock is applied to the exhaust valve in the energy storage industry, the electromagnetic coil and the thermistor are continuously powered to make the thermistor change from a conductor to an insulator when the temperature of the thermistor reaches the first temperature threshold, so as to realize power-off, thereby avoiding the burning of the electromagnetic coil due to the accumulation of heat and the continuous rise in temperature of the electromagnetic coil, and avoiding the burning of the electromagnetic coil when the temperature of the electromagnetic coil exceeds the temperature resistance of the electromagnetic coil. After power-off, the thermistor changes from an insulator to a conductor when the temperature of the thermistor drops to the second temperature threshold, so as to ensure that the anti-burning electromagnetic lock can be used next time. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of the anti-burning electromagnetic lock in one direction.

[0019] Figure 2 It is Figure 1 It is a structural schematic diagram of the anti-burning electromagnetic lock in one direction. DETAILED DESCRIPTION

[0020] With reference to the drawings of the embodiments of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all the other embodiments obtained by those skilled in the art without creative labor fall within the scope of the present application.

[0021] In combination Figure 1 And Figure 2 The present application discloses a burn-proof electromagnetic lock in an embodiment, which comprises a plug 10, a thermistor 20, an electromagnetic coil 30, a pull rod 40, a lock hook 50, and a lock buckle 60 buckled with the lock hook 50.

[0022] The plug 10, the thermistor 20, and the electromagnetic coil 30 are electrically connected in sequence. The electromagnetic coil 30 is used to generate magnetic attraction force to move the pull rod 40, and the pull rod 40 drives the lock hook 50 to move, so that the lock buckle 60 is opened. The thermistor 20 is used to change from a conductor to an insulator after being powered to a first temperature threshold, so as to realize power-off. The thermistor 20 is also used to change from an insulator to a conductor after being cooled to a second temperature threshold, and the first temperature threshold is greater than the second temperature threshold.

[0023] When the burn-proof electromagnetic lock is applied to an exhaust valve in the energy storage industry, the electromagnetic coil 30 and the thermistor 20 are continuously powered to make the thermistor 20 change from a conductor to an insulator after being powered to a first temperature threshold, so as to realize power-off, thereby avoiding the burnout of the electromagnetic coil 30 due to the accumulation of heat and continuous temperature rise, which finally exceeds the temperature resistance of the electromagnetic coil 30. After power-off, the thermistor 20 changes from an insulator to a conductor after being cooled to a second temperature threshold, thereby ensuring that the burn-proof electromagnetic lock can be used next time.

[0024] The first temperature threshold and the second temperature threshold can be set according to actual conditions.

[0025] Preferably, in the embodiment, the first temperature threshold can be 60-200℃, and the second temperature threshold can be 20-80℃.

[0026] Preferably, in the embodiment, the burn-proof electromagnetic lock further comprises a shell 70, the lock hook 50 comprises a connecting part 52, a first rotating part 54, and a first locking part 56 connected in sequence, the pull rod 40 is connected with the connecting part 52, the first rotating part 54 is rotatably connected with the shell 70, and the first locking part 56 is used to buckle with the lock buckle 60.

[0027] Specifically, in the embodiment, the pull rod 40 is provided with a through hole 401, and the connecting part 52 is partially exposed outside after penetrating through the through hole 401, thereby realizing the connection between the pull rod 40 and the connecting part 52.

[0028] In other embodiments, the pull rod 40 can be connected to the connecting portion 52 in other ways.

[0029] Preferably, in the embodiment, the lock catch 60 comprises a second rotating portion 62 and a second locking portion 64, the second rotating portion 62 is rotatably connected to the shell 70, and the second locking portion 64 is used for snap connection with the first locking portion 56.

[0030] Preferably, in the embodiment, the anti-burning electromagnetic lock further comprises a reset member 80, and the reset member 80 is connected to the second rotating portion 62 and the shell 70 respectively.

[0031] More preferably, in the embodiment, the reset member 80 is a torsion spring, and the torsion spring is elastically connected to the second rotating portion 62 and the shell 70 respectively.

[0032] In other embodiments, the reset member 80 can also be a magnetic component or other types of elastic members.

[0033] Preferably, in the embodiment, the anti-burning electromagnetic lock further comprises a signal feedback switch 90 arranged in the shell 70 and electrically connected to the plug 10.

[0034] Preferably, in the embodiment, the pull rod 40 is arranged at one end of the electromagnetic coil 30, and the thermistor 20 and the electromagnetic coil 30 are arranged in the shell 70.

[0035] Preferably, in the embodiment, the anti-burning electromagnetic lock further comprises a glass sleeve 100, and the plug 10, the glass sleeve 100 and the shell 70 are sequentially connected.

[0036] Specifically, in the embodiment, the signal feedback switch 90 is electrically connected to the plug 10 through a power line 101 arranged in the glass sleeve 100.

[0037] In the description of the embodiments of the utility model, it needs to be explained that the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the embodiments of the utility model and simplifying the description, and cannot be understood as indicating or implying that the devices or elements indicated must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the embodiments of the utility model. In addition, the terms "first", "second", "third" are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0038] In the description of the embodiments of the utility model, it needs to be explained that, unless there is definite stipulation and limitation, the term "connection" should be understood in a broad sense, for example, it can be fixed connection, or detachable connection, or integral connection, it can be mechanical connection, or electrical connection, it can be direct connection, or indirect connection through intermediate medium.

[0039] In the embodiments of the utility model, unless there is definite stipulation and limitation, the first feature is "on" or "under" the second feature, which can be direct contact of the first and second features, or indirect contact of the first and second features through intermediate medium. Moreover, the first feature "above", "over" and "on" the second feature can be directly above or obliquely above the second feature, or just indicate that the horizontal height of the first feature is higher than that of the second feature. The first feature "under", "below" and "on" the second feature can be directly under or obliquely under the second feature, or just indicate that the horizontal height of the first feature is lower than that of the second feature.

[0040] In the description of the specification, the description of the terms "one embodiment", "some embodiments", "example", "specific example" or "some examples" means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are contained in at least one embodiment or example of the utility model. In the specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, the skilled in the art can combine and combine the different embodiments or examples described in the specification and the features of the different embodiments or examples without contradiction.

[0041] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the utility model, and not to limit them; although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement to part of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the utility model.

Claims

1. A burn-proof electromagnetic lock, characterized in that, The plug, the thermistor, the electromagnetic coil, the pull rod, the hook and the lock buckle are connected in sequence. The plug, the thermistor and the electromagnetic coil are connected in sequence; the electromagnetic coil is used to generate magnetic attraction force to drive the pull rod to move, and the pull rod drives the hook to move, so that the lock buckle is opened; the thermistor is used to change from conductor to insulator when the temperature rises to a first temperature threshold, so as to realize power-off; the thermistor is also used to change from insulator to conductor when the temperature drops to a second temperature threshold, and the first temperature threshold is greater than the second temperature threshold.

2. The burn-resistant electromagnetic lock of claim 1, wherein, The anti-burning electromagnetic lock further comprises a shell, the hook comprises a connecting portion, a first rotating portion and a first locking portion connected in sequence, the pull rod is connected with the connecting portion, the first rotating portion is rotatably connected with the shell, and the first locking portion is used to buckle connect with the lock buckle.

3. The burn-resistant electromagnetic lock of claim 2, wherein, The pull rod is provided with a through hole, and the connecting portion is partially exposed outside after penetrating through the through hole.

4. The burn-resistant electromagnetic lock of claim 2, wherein, The lock buckle comprises a second rotating portion and a second locking portion, the second rotating portion is rotatably connected with the shell, and the second locking portion is used to buckle connect with the first locking portion.

5. The burn-resistant electromagnetic lock of claim 4, wherein, The anti-burning electromagnetic lock further comprises a reset member, and the reset member is connected with the second rotating portion and the shell respectively.

6. The burn-resistant electromagnetic lock of claim 5, wherein, The reset member is a torsion spring, and the torsion spring is elastically connected with the second rotating portion and the shell respectively.

7. The anti-burn electromagnetic lock according to any one of claims 2 to 6, characterized in that, The first temperature threshold is 60-200 DEG C, and the second temperature threshold is 20-80 DEG C.

8. The burn-resistant electromagnetic lock of claim 7, wherein, The anti-burning electromagnetic lock further comprises a signal feedback switch arranged in the shell and electrically connected with the plug.

9. The burn-resistant electromagnetic lock of claim 8, wherein, The pull rod is arranged at one end of the electromagnetic coil, and the thermistor and the electromagnetic coil are arranged in the shell.

10. The burn-resistant electromagnetic lock of claim 9, wherein, The anti-burning electromagnetic lock further comprises a glass fiber sleeve, and the plug, the glass fiber sleeve and the shell are connected in sequence.

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