Electromagnetic lock and shielding door

Abstract

The invention 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] The present application relates to the field of electromagnetic lock and shielding door. BACKGROUND

[0002] In the existing telescopic electromagnetic lock, the electromagnet core is directly connected with the telescopic lock rod, or the electromagnet core directly serves as the lock rod. In this scheme, the lock rod is prone to jamming during installation and operation, and the locking force and the rebound force are small.

[0003] In addition, the existing electromagnetic lock uses a micro switch to trigger and send a locking signal to the position. In the work, the micro switch may not be triggered due to factors such as vibration, which may cause the information indicating whether the lock is locked to report a fault, and the overall work is unstable. SUMMARY

[0004] In order to solve or alleviate at least one technical problem mentioned in the background, the present application provides an electromagnetic lock and a shielding door.

[0005] The electromagnetic lock provided by the embodiments of the present application comprises:

[0006] A sliding rod mechanism comprising a sliding rod, an electromagnet, and a sliding rod elastic member, the sliding rod being configured to reciprocate along a first direction under the action of the electromagnet and the sliding rod elastic member, the sliding rod being provided with a sliding rod first contact surface;

[0007] A lock rod mechanism comprising a lock rod and a lock rod elastic member, the lock rod being configured to reciprocate along a second direction, the first direction and the second direction forming a first included angle, the lock rod being provided with a lock rod contact portion, the lock rod contact portion being capable of being in contact with the sliding rod first contact surface, the second direction and the sliding rod first contact surface forming a second included angle, the second included angle being an angle other than 90°, so that after the sliding rod slides along the first direction, the lock rod contact portion is driven by the sliding rod first contact surface 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 comprises a sliding rod second contact surface provided at the end of the sliding rod first contact surface, the sliding rod second contact surface being perpendicular to the second direction.

[0009] In at least one embodiment, the lock rod comprises a locking end capable of being extended to lock or retracted to unlock, the sliding rod first contact surface being located on the side of the locking end of the lock rod contact portion, and the inclination direction of the sliding rod first contact surface being configured to retract the locking end when the sliding rod slides towards the electromagnet.

[0010] In at least one embodiment, the electromagnetic lock comprises a bracket, the bracket comprises at least one lock rod radial positioning hole, an 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 comprises a bracket, the bracket comprises a lock rod circumferential positioning long hole, a length direction of the lock rod circumferential positioning long hole is parallel to the second direction, a radial direction of the lock rod extends out a lateral guide rod, and the lateral guide rod extends into the lock rod circumferential positioning long hole.

[0012] In at least one embodiment, the lock rod abutting portion is rotationally connected to the lock rod, and a rotation axis of the lock rod abutting portion is perpendicular to a plane in which the first direction and the second direction are located.

[0013] In at least one embodiment, the electromagnetic lock comprises a bracket, the bracket is provided with a travel switch, the travel switch comprises 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 abut against the trigger or move away from the trigger.

[0014] In at least one embodiment, the trigger comprises a trigger connecting rod capable of rotating, a rotation axis of the trigger connecting rod is perpendicular to a plane in which the first direction and the second direction are located, and after the switch trigger plate slides in the second direction to an end of the trigger connecting rod, the switch trigger plate can lift up the end to trigger the trigger.

[0015] The shielding door provided by the embodiments of the present application comprises:

[0016] The electromagnetic lock as described above;

[0017] A door body, the door body comprises a lock tongue for abutting against the lock rod in a moving direction of the door body, the lock tongue comprises a protruding portion and a base portion arranged side by side, and the lock rod is towards the base portion.

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

[0019] Compared with the electromagnetic core directly connected with the telescopic lock rod or the electromagnetic core directly serving as the lock rod mentioned in the background art, the structure form of the electromagnetic lock is changed, the lock rod and the sliding rod are arranged separately. For example, when the lock rod fails, the lock rod can be replaced alone, without the need to disassemble the electromagnetic iron related components at the end of the sliding rod, and the maintenance is more convenient. The coaxiality requirement of the electromagnetic coil in the electromagnetic iron and the sliding rod can be reduced, so that the installation is simple and the jamming is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 A perspective view of an electromagnetic lock according to an embodiment of the present application is shown.

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

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

[0023] Figure 4 A side view of an electromagnetic lock according to an embodiment of the present application is shown. Figure 3

[0024] Figure 5 A side view of an electromagnetic lock according to an embodiment of the present application is shown.

[0025] Figure 6 A side view of an electromagnetic lock according to an embodiment of the present application is shown.

[0026] Figure 7 A sectional view of an electromagnetic lock according to an embodiment of the present application is shown.

[0027] Figure 8 A plan view of a shielding door according to an embodiment of the present application is shown.

[0028] Figure 9 A plan view of a shielding door according to an embodiment of the present application is shown.

[0029] BRIEF DESCRIPTION OF REFERENCE NUMERALS

[0030] 100 slide rod mechanism; 110 slide rod; 111 slide rod first contact surface; 112 slide rod second contact surface; 113 slide rod first body; 114 slide rod second body; 115 slide rod guide long hole; 116 slide rod guide hole; 117 slide rod third contact surface; 120 electromagnet; 121 electromagnet support; 130 slide rod elastic member; 140 stop block;

[0031] 200 lock rod mechanism; 210 lock rod; 211 lateral guide rod; 212 locking end; 213 lock rod contact portion; 214 first lock rod; 215 second lock rod; 216 recessed portion; 220 lock rod elastic member;

[0032] 300 support; 310 lock rod radial positioning hole; 320 lock rod circumferential positioning long hole; 330 slide rod positioning support; 340 pin shaft; 341 pin;

[0033] 400 travel switch; 410 trigger; 411 trigger connecting rod; 412 end portion; 413 auxiliary wheel;​

[0034] 500 switch trigger plate

[0035] 600 door body; 610 lock tongue; 611 protruding part; 612 base; 613 unlocking top rod

[0036] 700 wire group support DETAILED DESCRIPTION

[0037] Exemplary embodiments of the present application are described below with reference to the accompanying drawings. It should be understood that the specific description is merely for the purpose of teaching one skilled in the art how to practice the present application, and is not intended to limit the scope of the present application.

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

[0039] In one embodiment of the present application, referring to Figure 1 , the electromagnetic lock can include a slide rod mechanism 100, a lock rod mechanism 200 and a support 300.

[0040] The slide rod mechanism 100 can include a slide rod 110, an electromagnet 120 and a slide rod elastic member 130. The slide rod 110 is configured to reciprocate in a first direction A under the action of the electromagnet 120 and the slide rod elastic member 130.

[0041] Exemplarily, one end (e.g. the lower end) of the slide rod 110 can be connected to or formed as the core of the electromagnet 120. After the electromagnet 120 is turned on, the slide rod 110 slides towards the electromagnet 120.

[0042] A stopper 140 can be provided on the peripheral surface of the slide rod 110, and the electromagnet 120 can include an electromagnet support 121. The slide rod elastic member 130 can be provided between the stopper 140 and the electromagnet support 121, so that after the electromagnet 120 is powered off, the slide rod 110 moves away from the electromagnet 120 under the elastic force of the slide rod elastic member 130. The slide rod elastic member 130 can be a metal spring, a gas spring, etc.

[0043] Referring to Figures 1 to 3 , the slide rod 110 can include a slide rod first body 113 and a slide rod second body 114 connected together. The support 300 can include a slide rod guide hole 116 axially parallel to the first direction A, the slide rod first body 113 can be formed in a cylindrical shape, and the slide rod first body 113 can extend into the slide rod guide hole 116 to realize sliding in the first direction A.

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

[0045] Referring to Figure 1 The lock rod mechanism 200 can include a lock rod 210 configured to be able to reciprocate and slide in a second direction B. Referring to Figure 3 The first direction A can be perpendicular to the second direction B.

[0046] Referring to Figure 4 The slide rod 110 can be provided with a first slide rod contact surface 111, and the lock rod 210 can be provided with a lock rod contact portion 213 capable of being in contact with the first slide rod contact surface 111. The second direction B and the first slide rod contact surface 111 can form a second included angle D, which is an angle other than 90°, so that after the slide rod 110 slides in the first direction A, the lock rod contact portion 213 is driven by the first slide rod contact surface 111 to slide in the second direction B. For example, referring to Figure 5 The slide rod 110 moves upward, and the lock rod 210 can extend to the right. Referring to Figure 6 The slide rod 110 moves downward, and the lock rod 210 is pushed by the first slide rod contact surface 111 to correspondingly extend to the left.

[0047] Compared with the electromagnetic core directly connected with the lock rod or the electromagnetic core directly serving as the lock rod mentioned in the background art, the structure of the electromagnetic lock is changed in the present application, and the lock rod and the slide rod are arranged separately. On the one hand, for example, when the lock rod fails, the lock rod mechanism 200 can be replaced alone without the need to disassemble the electromagnetic iron 120 related components at the end of the slide rod mechanism 100, so that the maintenance is more convenient and the maintenance is simpler.

[0048] On the other hand, the coaxiality requirement of the slide rod (lock rod) connected to the electromagnetic core and the electromagnetic coil of the electromagnetic iron in the prior art is high, so that the slide rod can be smoothly inserted into the lock hole and other positions, and a slight deviation in the coaxiality will cause blockage. In the present application, the slide rod 110 can drive the lock rod 210 to slide, and the coaxiality requirement of the electromagnetic coil of the electromagnetic iron 120 and the slide rod 110 can be reduced, so that the installation is simple and the blockage is reduced.

[0049] In an embodiment of the present application, referring to Figure 4The slide bar 110 can further include a slide bar second contact surface 112 and a slide bar third contact surface 117 arranged at both ends of the slide bar first contact surface 111, both of which are perpendicular to the second direction B and parallel to the first direction A, so that the lock rod contact portion 213 can slide in the second direction B without being driven by the slide bar 110 after contacting the slide bar second contact surface 112 or the slide bar third contact surface.

[0050] Of course, the slide bar second contact surface 112 and the slide bar third contact surface 117 can not be arranged, or only one of them can be arranged. By arranging the contact surface perpendicular to the second direction B, the limit position of the forward and backward sliding of the lock rod 210 can be provided, and the influence of the electromagnetic force of the electromagnet 120 on the extension degree of the lock rod 210 can be reduced when the electromagnetic force is set to be large.

[0051] In an embodiment of the present application, referring to Figure 3 The lock rod spring 220 presses the lock rod 210 against the slide bar 110 in the second direction B to realize the reciprocating movement of the lock rod 210 with the slide bar 110.

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

[0053] The lock rod contact portion 213 can be arranged on the first lock rod 214, and the lock rod spring 220 is arranged on the radial outer side of the second lock rod 215, and the axial ends of the lock rod spring 220 contact the first lock rod 214 and the bracket 300 of the electromagnetic lock respectively, so as to press the lock rod 210 against the slide bar 110.

[0054] A possible embodiment is not to arrange the lock rod spring 220, for example, the slide bar 110 includes oppositely arranged slide bar contact surfaces (not shown in the figure), and the lock rod contact portion 213 is clamped between the oppositely arranged slide bar contact surfaces to realize the reciprocating movement of the lock rod 210 with the slide bar 110. However, this way will make the lock rod mechanism 200 and the slide bar mechanism 100 actually still in linkage state, and the installation and adjustment will be more difficult compared to the foregoing scheme of the present application.

[0055] In an embodiment of the present application, referring to Figure 3 The lock rod 210 can include a locking end 212 (right end) capable of extending to lock or retracting to unlock, and the slide bar first contact surface 111 is located on the side of the locking end of the lock rod contact portion 213. That is, as Figure 3As shown, the first abutting surface 111 of the slide rod 110 is located on the right side of the abutting portion 213 of the lock rod 210. The inclination direction of the first abutting surface 111 is arranged such that the locking end 212 is retracted when the slide rod 110 slides towards the electromagnet 120. That is, when the slide rod 110 is attracted by the electromagnet 120 and slides downwards, the locking end 212 can be moved leftwards to retract and unlock.

[0056] This embodiment allows the lock rod 210 to be pressed (to be described later) to retract and unlock when the electromagnet 120 fails to change the positions of the slide rod 110 and the lock rod 210, and the retraction process is not disturbed by the elastic restoring force of the slide rod elastic member 130 in the slide rod mechanism 100. In order to ensure that the electromagnet can still be manually unlocked after failure, 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 rod 210 can be retracted independently without linkage with the slide rod 110, so that the lock rod 210 can be directly operated to control the unlocking and locking of the electromagnetic lock when the electromagnet 120 fails to work normally. Moreover, the electromagnetic force and the elastic restoring force of the lock rod elastic member 220 during normal operation can be set to be relatively large, which facilitates the improvement of the locking and unlocking efficiency.

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

[0058] In an embodiment of the present application, referring to Figure 7 The bracket 300 can include a lock rod circumferential positioning long hole 320, and the lock rod circumferential positioning long hole 320 is parallel to the second direction B. The lock rod 210 extends radially to have a lateral guide rod 211, and the lateral guide rod 211 extends into the lock rod circumferential positioning long hole 320 to achieve circumferential positioning and avoid rotation of the lock rod 210.

[0059] In an embodiment of the present application, referring to Figure 7 The lock rod abutting portion 213 can be rotationally connected to the lock rod 210, and the rotation axis of the lock rod abutting portion 213 can be perpendicular to the plane on which the first direction A and the second direction B lie. The lock rod abutting portion 213 can be, for example, a rolling bearing, the outer ring of which is used to abut the slide rod 110, and the inner ring of which is connected to the lateral guide rod 211. That is, the lateral guide rod 211 can extend into the lock rod 210 and be connected to the lock rod abutting portion 213. The form of the rolling bearing makes the relative movement between the lock rod 210 and the slide rod 110 smoother. The lock rod 210 can be provided with a recess 216 (or a slot, a long notch, etc.) to accommodate the lock rod abutting portion 213 and the slide rod 110.

[0060] In an embodiment of the present application, referring to Figure 1 , the bracket 300 can be provided with a travel switch 400, which includes a trigger 410. Referring to Figure 1 and Figure 7 , the lock rod 210 can be connected with a switch trigger plate 500, so that after the lock rod 210 slides in the second direction B, the switch trigger plate 500 can abut against or move away from the trigger 410.

[0061] In an embodiment of the present application, referring to Figure 1 , the trigger 410 includes a trigger connecting rod 411 capable of rotating, and the rotation axis of the trigger connecting rod 411 is perpendicular to the plane in which the first direction A and the second direction B lie. An end portion 412 of the trigger connecting rod 411 can be provided with an auxiliary wheel 413, so as to be in contact with the switch trigger plate 500. For example, after the switch trigger plate 500 slides in the second direction B to the auxiliary wheel 413, the end portion 412 of the trigger connecting rod 411 can be lifted to trigger the trigger 410. The composition of the travel switch 400 is relatively stable, which can reduce malfunctions caused by factors such as vibration and improve the stability of the electromagnetic lock as a whole. Of course, the travel switch 400 in the present application can also be other configurations of travel switches. Compared with micro switches of civil and commercial levels, the present application can select industrial-grade travel switches to increase stability.

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

[0063] Referring to Figure 8 and Figure 9 , the shielding door can include an electromagnetic lock as described above and a door body 600. The door body 600 can include a lock tongue 610 for abutting against the lock rod in the moving direction E of the door body, and the lock tongue 610 includes a protruding portion 611 and a base portion 612 arranged side by side, and the lock rod 210 faces the base portion 612. It should be understood that the "lock tongue" here is used to provide the abutting position of the lock rod, and the lock tongue can also be referred to as a locking portion, a lock hole portion, etc. As shown in Figure 8 , when the locking end 212 is extended, the locking end 212 abuts against the protruding portion 611, and the door body 600 cannot move to the left to open. As shown in Figure 9 , when the locking end 212 is retracted, the abutting relationship between the locking end 212 and the protruding portion 611 is released, and the door body 600 can move to the left to open.

[0064] In an embodiment of the present application, referring to Figure 9 , the lock tongue 610 includes an unlocking top rod 613 arranged towards the lock rod 210, and the unlocking top rod 613 is operated to press against the lock rod 210 to unlock the electromagnetic lock.

[0065] In addition, referring to Figure 1The bracket 300 can further include a wire set bracket 700 for fixing the corresponding wire.

[0066] Exemplarily, the working process of the electromagnetic lock provided by the present application includes the locking state, the unlocking state and the manual unlocking state as shown below.

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

[0068] Unlocking state: refer to Figure 6 The electromagnet 120 is powered on, and the slide rod 110 slides under the attraction of the electromagnet 120. The lock rod 210 slides left under the pressure of the slide rod first contact surface 111, the locking end 212 retracts, the switch trigger plate 500 contacts the trigger 410, and the travel switch 400 correspondingly sends a signal of the unlocking state.

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

[0070] The above is the preferred embodiment of the present application. It should be pointed out that for those skilled in the art, without departing from the principle of the present application, a number of improvements and refinements can be made, which should also be considered as the protection scope of the present application.

Claims

1. An electromagnetic lock, characterized in that, include: A sliding rod mechanism (100) includes a sliding rod (110), an electromagnet (120), and a sliding rod elastic element (130). The sliding rod (110) is configured to reciprocate along a first direction (A) under the action of the electromagnet (120) and the sliding rod elastic element (130). A first sliding rod contact surface (111) is provided on the sliding rod (110). A locking rod mechanism (200) includes a locking rod (210) and a locking rod elastic element (220). The locking rod (210) is configured to slide back and forth along a second direction (B). There is a first included angle (C) between the second direction (B) and the first direction (A). The locking rod (210) is provided with a locking rod abutment (213). The locking rod abutment (213) can abut against the first abutment surface (111) of the slide rod. There is a second included angle (D) between the second direction (B) and the first abutment surface (111) of the slide rod. The second included angle (D) is an angle other than 90°. After the slide rod (110) slides along the first direction (A), the locking rod abutment (213) is driven by the first abutment surface (111) of the slide rod or can slide in the second direction (B) under the action of the locking rod elastic element (220).

2. The electromagnetic lock according to claim 1, characterized in that, The slide bar (110) also includes a second slide bar contact surface (112) disposed at the end of the first contact surface (111) of the slide bar, the second contact surface (112) of the slide bar being perpendicular to the second direction (B).

3. The electromagnetic lock according to claim 1, characterized in that, The locking rod (210) includes a locking end (212) that can extend to lock or retract to unlock. The first contact surface (111) of the slide rod is located on the side of the locking end (212) of the locking rod contact portion (213). The inclination direction of the first contact surface (111) of the slide rod is set such that when the slide rod (110) slides toward the electromagnet (120), the locking end (212) retracts.

4. The electromagnetic lock according to claim 1, characterized in that, The electromagnetic lock includes a bracket (300), the bracket (300) includes at least one locking rod radial positioning hole (310), the axial direction of the locking rod radial positioning hole (310) is parallel to the second direction (B), and the locking rod (210) extends into the locking rod radial positioning hole (310).

5. The electromagnetic lock according to claim 1, characterized in that, The electromagnetic lock includes a bracket (300), the bracket (300) includes a circumferential positioning elongated hole (320) for the lock rod, the length direction of the circumferential positioning elongated hole (320) for the lock rod is parallel to the second direction (B), and a lateral guide rod (211) extends radially from the lock rod (210), the lateral guide rod (211) extending into the circumferential positioning elongated hole (320) for the lock rod.

6. The electromagnetic lock according to claim 1, characterized in that, The locking rod abutment (213) is rotatably connected to the locking rod (210), and the rotation axis of the locking rod abutment (213) is perpendicular to the plane containing the first direction (A) and the second direction (B).

7. The electromagnetic lock according to claim 1, characterized in that, The electromagnetic lock includes a bracket (300), on which a limit switch (400) is provided. The limit switch (400) includes a trigger (410). The locking rod (210) is connected to a switch trigger plate (500). After the locking rod (210) slides in the second direction (B), the switch trigger plate (500) can approach and abut against the trigger (410) or move away from the trigger (410).

8. The electromagnetic lock according to claim 7, characterized in that, The trigger (410) includes a rotatable trigger link (411), the rotation axis of which is perpendicular to the plane containing the first direction (A) and the second direction (B). After the switch trigger plate (500) slides in the second direction (B) to the end (412) of the trigger link (411), it can push up the end (412) to trigger the trigger (410).

9. A shielding door, characterized in that, include: The electromagnetic lock according to any one of claims 1 to 8; The door body (600) includes a latch (610) for abutting against the locking bar (210) in the direction of movement of the door body (600). The latch (610) includes a protrusion (611) and a base (612) arranged side by side, and the locking bar (210) faces the base (612).

10. The shielding door according to claim 9, characterized in that, The latch (610) includes an unlocking push rod (613) facing the locking bar (210). Operating the unlocking push rod (613) can cause the unlocking push rod (613) to press against the locking bar (210) and unlock the electromagnetic lock.

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