Electromagnetic lock and shielding door

Abstract

The utility model provides an electromagnetic lock and a shielding door. The electromagnetic lock comprises a sliding rod mechanism and a lock rod mechanism. The sliding rod mechanism comprises a sliding rod, an electromagnet and a sliding rod elastic piece, the sliding rod is configured to slide in a reciprocating mode in the first direction under the action of the electromagnet and the sliding rod elastic piece, and a sliding rod first abutting face is arranged on the sliding rod. The lock rod mechanism comprises a lock rod and a lock rod elastic piece, and the lock rod is configured to slide in a reciprocating mode in the second direction. A first included angle exists between the second direction and the first direction, and a lock rod abutting portion is arranged on the lock rod and can abut against the first abutting face of the sliding rod. A second included angle is formed between the second direction and the first abutting face of the sliding rod, and the second included angle is larger than 90 degrees, so that after the sliding rod slides in the first direction, the locking rod abutting portion is driven by the first abutting face of the sliding rod or can slide in the second direction under the action of the locking rod elastic piece.

Description

Technical Field

[0001] This application relates to the fields of electromagnetic locks and screen doors. Background Art

[0002] In existing telescopic electromagnetic locks, the electromagnet core is directly connected to the telescopic lock rod, or the electromagnet core directly serves as the lock rod. In this solution, the lock rod is prone to jamming during installation and operation, and has small locking force and resilience.

[0003] In addition, existing electromagnetic locks use microswitches to trigger and send in-place locking signals. Affected by factors such as vibration during operation, the microswitch may not be triggered, resulting in a fault indication for whether it is locked, and the overall operation is unstable. Utility Model Content

[0004] To solve or alleviate at least one technical problem mentioned in the background art, this application provides an electromagnetic lock and a screen door.

[0005] The electromagnetic lock provided by the embodiment of this application includes:

[0006] A sliding rod mechanism, including a sliding rod, an electromagnet, and a sliding rod elastic member. The sliding rod is configured to be able to reciprocate along a first direction under the action of the electromagnet and the sliding rod elastic member. A first contact surface of the sliding rod is provided on the sliding rod.

[0007] A lock rod mechanism, including a lock rod and a lock rod elastic member. The lock rod is configured to be able to reciprocate along a second direction. There is a first included angle between the second direction and the first direction. A lock rod contact portion is provided on the lock rod. The lock rod contact portion can contact the first contact surface of the sliding rod. There is a second included angle between the second direction and the first contact surface of the sliding rod. The second included angle is an angle other than 90°. After the sliding rod slides along the first direction, the lock rod contact portion is driven by the first contact surface of the sliding rod or can slide in the second direction under the action of the lock rod elastic member.

[0008] In at least one embodiment, the sliding rod further includes a second contact surface of the sliding rod provided at the end of the first contact surface of the sliding rod, and the second contact surface of the sliding rod is perpendicular to the second direction.

[0009] In at least one embodiment, the lock rod includes a locking end that can extend to lock or contract to unlock. The first contact surface of the sliding rod is located on the side where the locking end of the lock rod contact portion is located. The inclination direction of the first contact surface of the sliding rod is set such that when the sliding rod slides towards the electromagnet, the locking end contracts.

[0010] In at least one embodiment, the electromagnetic lock includes a bracket, the bracket includes at least one lock rod radial positioning hole, the axial direction of the lock rod radial positioning hole is parallel to the second direction, and the lock rod extends into the lock rod radial positioning hole.

[0011] In at least one embodiment, the electromagnetic lock includes a bracket, the bracket includes a lock rod circumferential positioning slot, the length direction of the lock rod circumferential positioning slot is parallel to the second direction, a lateral guide rod extends radially from the lock rod, and the lateral guide rod extends into the lock rod circumferential positioning slot.

[0012] In at least one embodiment, the lock rod contact portion is rotatably connected to the lock rod, and the rotation axis of the lock rod contact portion is perpendicular to the plane where the first direction and the second direction are located.

[0013] In at least one embodiment, the electromagnetic lock includes a bracket, a travel switch is arranged on the bracket, the travel switch includes a trigger, the lock rod is connected with a switch trigger plate, and after the lock rod slides in the second direction, the switch trigger plate can approach and contact the trigger or move away from the trigger.

[0014] In at least one embodiment, the trigger includes a rotatable trigger link, the rotation axis of the trigger link is perpendicular to the plane where the first direction and the second direction are located, and when the switch trigger plate slides in the second direction to the end of the trigger link, the end can be lifted to trigger the trigger.

[0015] The screen door provided by the embodiment of the present application includes:

[0016] The electromagnetic lock as described above;

[0017] A door body, the door body includes a lock tongue for abutting against the lock rod in the moving direction of the door body, the lock tongue includes a protruding portion and a base portion arranged in parallel, and the lock rod faces the base portion.

[0018] In at least one embodiment, the lock tongue includes an unlocking ejector rod arranged towards the lock rod, and operating the unlocking ejector rod can make the unlocking ejector rod press against the lock rod to unlock the electromagnetic lock.

[0019] Compared with the electromagnetic iron core directly connected to the telescopic lock rod or the electromagnetic iron core directly used as the lock rod mentioned in the background art, the present application changes the structural form of the electromagnetic lock and separately arranges the lock rod and the slide rod. For example, when the lock rod fails, the lock rod can be replaced separately without removing the electromagnetic components at the end of the slide rod, which is more convenient for maintenance. The coaxiality requirement between the electromagnetic coil in the electromagnetic iron and the slide rod can be reduced, making the installation simple and reducing jamming. Description of the Drawings

[0020] Figure 1 Shows an axonometric view of an electromagnetic lock according to an embodiment of the present application.

[0021] Figure 2 Shows a front view of a partial structure of an electromagnetic lock according to an embodiment of the present application.

[0022] Figure 3 Shows a side view of a partial structure of an electromagnetic lock according to an embodiment of the present application.

[0023] Figure 4 Shows Figure 3 A partial enlarged view of the lock rod contact portion and the position of the first contact surface of the sliding rod in

[0024] Figure 5 Shows a side view of the electromagnetic lock in the locked state according to an embodiment of the present application.

[0025] Figure 6 Shows a side view of the electromagnetic lock in the unlocked state according to an embodiment of the present application.

[0026] Figure 7 Shows a cross-sectional view of the electromagnetic lock showing the switch trigger board according to an embodiment of the present application.

[0027] Figure 8 Shows a top view of the shield door in the locked state according to an embodiment of the present application.

[0028] Figure 9 Shows a top view of the shield door in the unlocked state according to an embodiment of the present application.

[0029] Description of reference numerals

[0030] 100 Sliding rod mechanism; 110 Sliding rod; 111 First contact surface of the sliding rod; 112 Second contact surface of the sliding rod; 113 First body of the sliding rod; 114 Second body of the sliding rod; 115 Long guiding hole of the sliding rod; 116 Guiding hole of the sliding rod; 117 Third contact surface of the sliding rod; 120 Electromagnet; 121 Electromagnet bracket; 130 Elastic member of the sliding rod; 140 Stopper

[0031] 200 Lock rod mechanism; 210 Lock rod; 211 Lateral guiding rod; 212 Locking end; 213 Lock rod contact portion; 214 First lock rod; 215 Second lock rod; 216 Depressed portion; 220 Elastic member of the lock rod

[0032] 300 Bracket; 310 Radial positioning hole of the lock rod; 320 Circumferential positioning long hole of the lock rod; 330 Sliding rod positioning bracket; 340 Pin shaft; 341 Pin

[0033] 400 Travel switch; 410 Trigger; 411 Trigger link; 412 End portion; 413 Auxiliary wheel

[0034] 500 Switch trigger board;

[0035] 600 Door body; 610 Lock tongue; 611 Protrusion; 612 Base; 613 Unlock ejector rod;

[0036] 700 Wire group bracket Detailed implementation manners

[0037] The exemplary implementation manners of the present application will be described below with reference to the accompanying drawings. It should be understood that these specific descriptions are only used to teach those skilled in the art how to implement the present application, rather than to exhaust all feasible manners of the present application, nor to limit the scope of the present application.

[0038] The present application provides an electromagnetic lock and a screen door.

[0039] In one implementation manner of the present application, referring to Figure 1 , the electromagnetic lock may include a sliding rod mechanism 100, a locking rod mechanism 200, and a bracket 300.

[0040] The sliding rod mechanism 100 may include a sliding rod 110, an electromagnet 120, and a sliding rod elastic member 130. The sliding rod 110 is configured to be able to reciprocally slide along the first direction A under the action of the electromagnet 120 and the sliding rod elastic member 130.

[0041] Exemplarily, one end (for example, the lower end) of the sliding rod 110 may be connected to the iron core of the electromagnet 120 or formed as the iron core of the electromagnet 120. After the electromagnet 120 is turned on, the sliding rod 110 slides towards the electromagnet 120.

[0042] A stopper 140 may be provided on the circumferential surface of the sliding rod 110. The electromagnet 120 may include an electromagnet bracket 121. A sliding rod elastic member 130 may be provided between the stopper 140 and the electromagnet bracket 121 to move the sliding rod 110 away from the electromagnet 120 under the elastic force of the sliding rod elastic member 130 after the electromagnet 120 is powered off. The sliding rod elastic member 130 may be a metal spring, a gas spring, etc.

[0043] Referring to Figures 1 to 3 , the sliding rod 110 may include a connected sliding rod first body 113 and a sliding rod second body 114. The bracket 300 may include a sliding rod guiding hole 116 axially parallel to the first direction A. The sliding rod first body 113 may be formed as a cylinder, and the sliding rod first body 113 may extend into the sliding rod guiding hole 116 to achieve sliding in the first direction A.

[0044] Referring to Figure 3, the second body 114 of the slide bar can be formed into a plate shape. A slide bar guiding long hole 115 can be provided on the second body 114 of the slide bar. The bracket 300 can include slide bar positioning brackets 330 arranged on both sides of the second body 114 of the slide bar. A pin shaft 340 extending into the slide bar guiding long hole 115 can be provided on the slide bar positioning brackets 330 to achieve the positioning and guiding of the second body 114 of the slide bar. The pin shaft 340 can be installed on the slide bar positioning brackets 330 through a pin 341.

[0045] See Figure 1 , the lock bar mechanism 200 can include a lock bar 210 which is configured to be able to reciprocally slide along the second direction B. See Figure 3 , there is a first included angle C between the second direction B and the first direction A. For example, the first included angle C is 90°, and the first direction A can be perpendicular to the second direction B.

[0046] See Figure 4 , a first contact surface 111 of the slide bar can be provided on the slide bar 110. A lock bar contact portion 213 can be provided on the lock bar 210, and the lock bar contact portion 213 can be in contact with the first contact surface 111 of the slide bar. There can be a second included angle D between the second direction B and the first contact surface 111 of the slide bar, and the second included angle D is an angle other than 90°. After the slide bar 110 slides along the first direction A, the lock bar contact portion 213 is driven by the first contact surface 111 of the slide bar to slide in the second direction B. For example, see Figure 5 , when the slide bar 110 moves upward, the lock bar 210 can extend to the right. See Figure 6 , when the slide bar 110 moves downward, the lock bar 210 is pushed by the first contact surface 111 of the slide bar and extends to the left accordingly.

[0047] Compared with the electromagnet iron core directly connected to the lock bar or the electromagnet iron core directly serving as the lock bar mentioned in the background art, the present application changes the structural form of the electromagnetic lock and separately arranges the lock bar and the slide bar. On the one hand, for example, when the lock bar fails, the lock bar mechanism 200 can be replaced separately without removing the components related to the electromagnet 120 at the end of the slide bar mechanism 100, making the overhaul more convenient and the maintenance simpler.

[0048] On the other hand, in the prior art, the coaxiality requirement between the slide bar (lock bar) connected to the electromagnet iron core and the electromagnetic coil of the electromagnet is relatively high so that the slide bar can smoothly insert into positions such as the lock hole. If the coaxiality is slightly unqualified, it will cause jamming. In the present application, the slide bar 110 only needs to be able to drive the lock bar 210 to slide, and the coaxiality requirement between the electromagnetic coil of the electromagnet 120 and the slide bar 110 can be reduced, making the installation simple and reducing jamming.

[0049] In an embodiment of the present application, see Figure 4, the sliding rod 110 may further include a second sliding rod contact surface 112 and a third sliding rod contact surface 117 provided at both ends of the first contact surface 111 of the sliding rod. Both the second sliding rod contact surface 112 and the third sliding rod contact surface 117 are perpendicular to the second direction B and parallel to the first direction A, so that after the locking rod contact portion 213 contacts the second sliding rod contact surface 112 or the third sliding rod contact surface, it can be not driven by the sliding rod 110 to slide in the second direction B.

[0050] Of course, the second sliding rod contact surface 112 and the third sliding rod contact surface 117 may not be provided, or only one of them may be provided. By providing a contact surface perpendicular to the second direction B, a limit position can be provided for the forward and backward sliding of the locking rod 210, reducing the influence on the extending degree of the locking rod 210 caused by, for example, a relatively large electromagnetic force of the electromagnet 120.

[0051] In an embodiment of the present application, refer to Figure 3 , the locking rod elastic member 220 presses the locking rod 210 against the sliding rod 110 in the second direction B to enable the locking rod 210 to reciprocate with the sliding rod 110.

[0052] Exemplarily, the locking rod 210 may include a first locking rod 214 with a larger diameter and a second locking rod 215 with a smaller diameter. The first locking rod 214 may be threadedly connected to the second locking rod 215 or integrally formed.

[0053] The locking rod contact portion 213 may be provided on the first locking rod 214, and the locking rod elastic member 220 is provided on the radial outer side of the second locking rod 215, and the axial two ends of the locking rod elastic member 220 respectively contact the first locking rod 214 and the bracket 300 of the electromagnetic lock to press the locking rod 210 against the sliding rod 110.

[0054] A possible implementation is not to provide the locking rod elastic member 220. For example, the sliding rod 110 includes opposite sliding rod contact surfaces (not shown in the figure), and the locking rod contact portion 213 is clamped between the opposite sliding rod contact surfaces to enable the locking rod 210 to reciprocate with the sliding rod 110. However, this method will make the locking rod mechanism 200 and the sliding rod mechanism 100 still in a linkage state in fact, and it will be more difficult to install and adjust compared with the foregoing solution of the present application.

[0055] In an embodiment of the present application, refer to Figure 3 , the locking rod 210 may include a locking end 212 (right end) that can extend to lock or contract to unlock, and the first contact surface 111 of the sliding rod is located on the side where the locking end of the locking rod contact portion 213 is located. That is, as Figure 3As shown, the first contact surface 111 of the slide bar is generally located on the right side of the locking bar contact portion 213. The inclined direction of the first contact surface 111 of the slide bar is set so that when the slide bar 110 slides toward the electromagnet 120, the locking end 212 shrinks. That is, when the slide bar 110 is attracted by the electromagnet 120 and slides down, it can drive the locking end 212 to move leftward and shrink and unlock.

[0056] This embodiment allows, for example, when the electromagnet 120 fails and cannot change the position of the slide bar 110 and the lock bar 210, the lock bar 210 can be pressed (described later) to shrink and unlock, and the shrinking process is not interfered by the elastic restoring force of the slide bar elastic member 130 in the slide bar mechanism 100. In order to ensure that manual unlocking can still be achieved after the electromagnet fails, the electromagnetic force and the corresponding elastic restoring force in the prior art are not high, which makes the locking and unlocking efficiency have room for improvement. In the present application, the lock bar 210 can shrink alone without linking the slide bar 110, so that, for example, after the electromagnet 120 fails to work normally, the lock bar 210 can be directly operated to control the unlocking and locking of the electromagnetic lock. And the electromagnetic force during normal operation and the elastic restoring force of the lock bar elastic member 220 can be set to be larger, which is convenient for improving the locking and unlocking efficiency.

[0057] In one embodiment of the present application, see Figure 1 The bracket 300 may include at least one locking rod radial positioning hole 310 , and the axial direction of the locking rod radial positioning hole 310 is parallel to the second direction B. The locking rod 210 extends into the locking rod radial positioning hole 310 to achieve radial positioning of the locking rod 210 .

[0058] In one embodiment of the present application, see Figure 7 The bracket 300 may include a locking rod circumferential positioning slot 320, which is parallel to the second direction B. A lateral guide rod 211 extends radially from the locking rod 210, and the lateral guide rod 211 extends into the locking rod circumferential positioning slot 320 to achieve circumferential positioning and prevent the locking rod 210 from rotating.

[0059] In one embodiment of the present application, see Figure 7 , the locking rod abutting portion 213 can be rotatably connected to the locking rod 210, and the rotation axis of the locking rod abutting portion 213 can be perpendicular to the plane where the first direction A and the second direction B are located. The locking rod abutting portion 213 can be, for example, a rolling bearing, whose outer ring is used to abut the sliding rod 110, and whose inner ring is connected to the lateral guide rod 211. That is, the lateral guide rod 211 can extend into the locking rod 210 and be connected to the locking rod abutting portion 213. The form of the rolling bearing makes the relative movement between the locking rod 210 and the sliding rod 110 smoother. A recessed portion 216 (or groove, long notch, etc.) can be provided in the locking rod 210 to accommodate the locking rod abutting portion 213 and the sliding rod 110.

[0060] In an embodiment of the present application, refer to Figure 1 , a travel switch 400 may be provided on the bracket 300, and the travel switch 400 includes a trigger 410. Refer to Figure 1 and Figure 7 . A switch trigger plate 500 may be connected to the locking rod 210, such that after the locking rod 210 slides in the second direction B, the switch trigger plate 500 can contact or move away from the trigger 410.

[0061] In an embodiment of the present application, refer to Figure 1 . The trigger 410 includes a rotatable trigger link 411, and the rotation axis of the trigger link 411 is perpendicular to the plane where the first direction A and the second direction B are located. An auxiliary wheel 413 may be provided at the end 412 of the trigger link 411 for contacting the switch trigger plate 500. For example, after the switch trigger plate 500 slides to the position of the auxiliary wheel 413 in the second direction B, it can lift the end 412 of the trigger link 411 to trigger the trigger 410. The composition of this travel switch 400 is relatively stable, which can reduce malfunctions caused by factors such as vibration, and improve the overall stability of the electromagnetic lock. Of course, the travel switch 400 in the present application may also be a travel switch of other configurations. Compared with the micro switches for civil and commercial use, industrial-grade travel switches can be selected in the present application to increase stability.

[0062] The screen door provided by the present application may be, for example, a half-height safety door provided at a subway platform.

[0063] Refer to Figure 8 and Figure 9 . The screen door may include the electromagnetic lock and the door body 600 as described above. The door body 600 may include a locking tongue 610 for abutting against the locking rod in the door body moving direction E. The locking tongue 610 includes a protruding portion 611 and a base portion 612 arranged in parallel, and the locking rod 210 faces the base portion 612. It should be understood that the "locking tongue" here is used to provide a portion for the locking rod to abut against, and this locking tongue may also be referred to as a locking portion, a lock hole portion, etc. As Figure 8 shows, when the locking end 212 extends, the locking end 212 abuts against the protruding portion 611, and the door body 600 cannot move left to open. As Figure 9 shows, when the locking end 212 contracts, the abutting relationship between the locking end 212 and the protruding portion 611 is released, and the door body 600 can move left to open.

[0064] In an embodiment of the present application, refer to Figure 9 . The locking tongue 610 includes an unlocking ejector rod 613 facing the locking rod 210, and operating the unlocking ejector rod 613 to press against the locking rod 210 unlocks the electromagnetic lock.

[0065] In addition, refer to Figure 1, the bracket 300 may further include a wire group bracket 700 for fixing corresponding wires.

[0066] Exemplarily, the working process of the electromagnetic lock provided in this application includes a locking state, an unlocking state, and a manual unlocking state as shown below.

[0067] Locking state: Refer to Figure 5 , the electromagnet 120 is powered off, and the sliding rod 110 slides upward under the action of the sliding rod elastic member 130. The locking rod 210 slides to the right under the action of the locking rod elastic member 220, and the locking end 212 extends out. The travel switch 400 emits a signal of the locking state.

[0068] Unlocking state: Refer to Figure 6 , the electromagnet 120 is turned on, and the sliding rod 110 slides downward under the attraction of the electromagnet 120. The locking rod 210 slides to the left under the pressing of the first contact surface 111 of the sliding rod, the locking end 212 contracts, the switch trigger plate 500 abuts against the trigger 410, and the travel switch 400 correspondingly emits a signal of the unlocking state.

[0069] Manual unlocking state: Refer to Figure 9 , the unlocking ejector rod 613 presses the locking end 212 back, and the travel switch 400 correspondingly emits a signal of the unlocking state.

[0070] The above are the preferred embodiments of this application. It should be noted that for those skilled in the art, without departing from the principle of this application, several improvements and refinements can be made, and these improvements and refinements should also be regarded as the protection scope of this application.

Claims

1. An electromagnetic lock, characterized in that: include: A slide bar mechanism, comprising a slide bar, an electromagnet and a slide bar elastic member, wherein the slide bar is configured to be able to slide back and forth along a first direction under the action of the electromagnet and the slide bar elastic member, and a first slide bar contact surface is provided on the slide bar; A locking rod mechanism comprises a locking rod and a locking rod elastic member, wherein the locking rod is configured to be able to slide back and forth along a second direction, and there is a first angle between the second direction and the first direction. A locking rod resistance portion is provided on the locking rod, and the locking rod resistance portion can resist against a first resistance surface of the sliding bar, and there is a second angle between the second direction and the first resistance surface of the sliding bar, and the second angle is an angle other than 90°, so that after the sliding bar slides along the first direction, the locking rod resistance portion is driven by the first resistance surface of the sliding bar or can slide in the second direction under the action of the locking rod elastic member.

2. The electromagnetic lock according to claim 1, characterized in that: The slide bar further includes a slide bar second contact surface arranged at an end of the slide bar first contact surface, and the slide bar second contact surface is perpendicular to the second direction.

3. The electromagnetic lock according to claim 1, characterized in that: The locking rod includes a locking end that can be extended to lock or retracted to unlock, the first contact surface of the sliding rod is located on the side of the locking end of the locking rod contact portion, and the inclination direction of the first contact surface of the sliding rod is set so that the locking end retracts when the sliding rod slides toward the electromagnet.

4. The electromagnetic lock according to claim 1, characterized in that: The electromagnetic lock comprises a bracket, the bracket comprises at least one locking rod radial positioning hole, the axial direction of the locking rod radial positioning hole is parallel to the second direction, and the locking rod extends into the locking rod radial positioning hole.

5. The electromagnetic lock according to claim 1, characterized in that: The electromagnetic lock includes a bracket, which includes a long hole for circumferential positioning of the lock rod. The length direction of the long hole for circumferential positioning of the lock rod is parallel to the second direction. A lateral guide rod extends radially from the lock rod, and the lateral guide rod extends into the long hole for circumferential positioning of the lock rod.

6. The electromagnetic lock according to claim 1, characterized in that: The locking rod abutting portion is rotatably connected to the locking rod, and a rotation axis of the locking rod abutting portion is perpendicular to a plane where the first direction and the second direction are located.

7. The electromagnetic lock according to claim 1, characterized in that: The electromagnetic lock includes a bracket, a travel switch is arranged on the bracket, the travel switch includes a trigger, the lock rod is connected to a switch trigger plate, and after the lock rod slides in the second direction, the switch trigger plate can approach and abut the trigger or move away from the trigger.

8. The electromagnetic lock according to claim 7, characterized in that: The trigger includes a rotatable trigger link, the rotation axis of the trigger link is perpendicular to the plane where the first direction and the second direction are located, and the switch trigger plate can lift the end of the trigger link to trigger the trigger after sliding to the end of the trigger link in the second direction.

9. A shielding door, characterized in that: include: The electromagnetic lock according to any one of claims 1 to 8; The door body comprises a locking tongue for abutting against the locking rod in the moving direction of the door body, the locking tongue comprises a protruding portion and a base portion arranged in parallel, and the locking rod faces the base portion.

10. The screen door according to claim 9, characterized in that: The lock tongue comprises an unlocking push rod arranged toward the lock rod, and the unlocking push rod can be operated to press the unlocking push rod against the lock rod to unlock the electromagnetic lock.

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