Electromagnetic lock for safety door

Abstract

The invention discloses an electromagnetic lock for a safety door, comprising: a main connecting part, the upper surface of which has a first axis; an electromagnet connected to the upper surface of the main connecting part; a triggering part, which is connected to the upper surface of the main connecting part through a first step axis and one end of which is connected to the electromagnet. Under the action of the electromagnet, the triggering part rotates around the first step axis as the rotation center; a torsion spring, which is sleeved on the first step axis and limited between the first axis and the triggering part; a first travel switch, which is connected to the upper surface of the main connecting part and contacts or separates from the other end of the triggering part; and a toggle part, which is connected to the main connecting part and can pass through the main connecting part, a part of which is arranged between the electromagnet and the upper surface of the main connecting part and cooperates with the triggering part, and the other part of which passes through the main connecting part from the lower surface of the main connecting part and cooperates with the sliding door lock pin at the lower surface, so as to facilitate the linkage of the sliding door lock pin with the toggle part. The technical problems of large size, difficult installation, high failure rate and unstable performance are overcome.

Description

Technical Field

[0001] The invention relates to the technical field of safety doors, in particular to an electromagnetic lock for a safety door. Background Art

[0002] With the development of urban subways, the demand for subway safety doors is increasing. In the entire safety door system module, sliding doors are the most frequently used door bodies. In the sliding door opening system, electromagnetic locks are the most critical core components. Whether the function of the electromagnetic lock is reliable is related to whether the door body can be opened normally. The current electromagnetic locks are large in size, difficult to install, have a high failure rate, and unstable performance. Summary of the invention

[0003] In view of the above-mentioned deficiencies existing in the related art, the object of the present invention is to provide a safety door electromagnetic lock to solve the technical problems of large size, difficult installation, high failure rate and unstable performance in the related art.

[0004] The technical solution to achieve the purpose of the present invention is: a safety door electromagnetic lock, comprising:

[0005] A main connecting member, having a first axis on its upper surface;

[0006] an electromagnet connected to the upper surface of the main connecting member;

[0007] A triggering member is connected to the upper surface of the main connecting member through a first stepped shaft, and one end of the triggering member is connected to the electromagnet. Under the action of the electromagnet, the triggering member rotates by an angle with the first stepped shaft as the rotation center;

[0008] a torsion spring, sleeved on the first stepped shaft and limited between the first shaft and the trigger member;

[0009] A first travel switch, connected to the upper surface of the main connecting member, capable of contacting or separating with the other end of the trigger member;

[0010] And a toggle member, which is connected to the main connecting member and can pass through the main connecting member, with one part arranged between the electromagnet and the upper surface of the main connecting member to cooperate with the trigger member, and the other part passes through the main connecting member from the lower surface of the main connecting member and cooperates with the sliding door lock pin at the lower surface, so that the sliding door lock pin can link the toggle member.

[0011] Further: the trigger member includes: a first member, the middle part of which is connected to the first stepped shaft, and the two ends extend outward from the middle part to form an angle, one end extends to the first travel switch, and the other end extends to the toggle member, and has a protrusion that can be engaged with the toggle member;

[0012] and a second piece, vertically connected to the upper surface of the first piece, for connecting with the electromagnet.

[0013] Further: the first stepped shaft comprises: a stepped shaft section having a circular annular groove, one end of which is connected to the main connecting member, and the other end of which passes through the trigger member and is used to connect to the torsion spring;

[0014] And a first plate is connected to the top of the stepped shaft segment, and the outer diameter of the first plate is larger than the outer diameter of the stepped shaft segment at its largest point.

[0015] Further: the toggle member includes: an outer lock plate, connected to the main connecting member through a bearing assembly, and cooperates with the sliding door lock pin through a first notch;

[0016] And an inner lock plate, which has a second notch on its outer edge, is connected to the top of the outer lock plate, is arranged between the electromagnet and the upper surface of the main connecting member, and can be engaged with the protrusion through the second notch.

[0017] Further: also includes: a manual unlocking member connected to the main connecting member;

[0018] The manual unlocking member includes: a second travel switch connected to the upper surface of the main connecting member;

[0019] The second stepped shaft is passed through the main connecting member, has a clearance fit with the main connecting member, can move on the main connecting member, has a tapered surface at one end, contacts the trigger member through the tapered surface, and the other end protrudes outside the lower surface of the main connecting member;

[0020] A spring, which is sleeved on the second stepped shaft and has one end in contact with the lower surface of the main connecting member;

[0021] And a handle connected to the other end of the second stepped shaft to press the other end of the spring.

[0022] By adopting the above technical scheme, the present invention has the following beneficial effects: a safety door electromagnetic lock, compared with the related technology, is provided with a main connecting part, which is convenient for the safety door electromagnetic lock to be installed at the required position; the main connecting part is connected with an electromagnet, a trigger part, a first step shaft, a torsion spring, a first travel switch and a toggle part. When the door body needs to be opened, the electromagnet is energized, the trigger part is linked, and the first step shaft is used as the rotation center. The trigger part is disengaged from the toggle part, and the first travel switch is in a released state, which transmits a door opening signal to the door controller DCU, so that the sliding door lock pin can push the toggle part open and the door body is opened; thereby overcoming the technical problems of large size, difficult installation, high failure rate and unstable performance, and achieving the technical effect of relatively small size, easy installation, good reliability and relatively low failure rate, which is conducive to wide promotion. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is one of the three-dimensional structural schematic diagrams of an embodiment of the present invention;

[0024] Figure 2 This is the second schematic diagram of the three-dimensional structure of an embodiment of the present invention;

[0025] Figure 3 A schematic diagram of the three-dimensional structure of a trigger member according to an embodiment of the present invention;

[0026] Figure 4 It is a schematic diagram of the three-dimensional structure of the main connecting member and the first shaft of an embodiment of the present invention;

[0027] Figure 5 Schematic diagram of the three-dimensional structure of the first step shaft of an embodiment of the present invention;

[0028] Figure 6 A schematic diagram of the three-dimensional structure of a toggle member according to an embodiment of the present invention;

[0029] Figure 7 It is a schematic diagram of the three-dimensional structure of the outer locking disk according to an embodiment of the present invention;

[0030] Figure 8 It is a schematic diagram of the three-dimensional structure of the inner locking disk according to an embodiment of the present invention;

[0031] Fig. 9 is a cross-sectional view of a toggle member according to an embodiment of the present invention;

[0032] Fig.10 is a schematic diagram of the installation of a manual unlocking member in an embodiment of the present invention;

[0033] Fig.11 is a partial cross-sectional view of a manual unlocking member in an embodiment of the present invention;

[0034] In the figure: 10. main connecting member, 11. first shaft, 20. electromagnet, 30. trigger member, 31. first member, 311. bump, 32. second member, 40. first stepped shaft, 41. stepped shaft section, 411. annular groove, 42. first plate, 50. torsion spring, 60. first travel switch, 70. toggle member, 71. outer lock plate, 711. first notch, 72. bearing assembly, 73. inner lock plate, 731. second notch, 80. manual unlocking member, 81. second travel switch, 82. second stepped shaft, 821. tapered surface, 83. spring, 84. handle, 1000. sliding door lock pin. DETAILED DESCRIPTION

[0035] In order to make the content of the present invention more clearly understood, the present invention is further described in detail below according to specific embodiments and in conjunction with the accompanying drawings;

[0036] The electromagnetic lock for a safety door of the present invention solves the technical problems of large volume, difficult installation, high failure rate and unstable performance in the related art, and achieves the positive effects of relatively small volume, convenient installation, good reliability and relatively low failure rate. The overall idea is as follows:

[0037] Embodiment 1:

[0038] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Fig. 9 As shown; a safety door electromagnetic lock, comprising:

[0039] The main connecting member 10 has a first axis 11 on its upper surface;

[0040] an electromagnet 20 connected to the upper surface of the main connecting member 10;

[0041] The trigger member 30 is connected to the upper surface of the main connecting member 10 through the first stepped shaft 40, and one end is connected to the electromagnet 20. Under the action of the electromagnet 20, the trigger member 30 rotates with the first stepped shaft 40 as the rotation center at an angle;

[0042] a torsion spring 50, which is sleeved on the first stepped shaft 40 and is limited between the first shaft 11 and the trigger member 30;

[0043] A first travel switch 60, connected to the upper surface of the main connecting member 10, capable of contacting or separating with the other end of the trigger member 30;

[0044] and a toggle member 70, connected to the main connecting member 10, capable of passing through the main connecting member 10, a part of which is disposed between the electromagnet 20 and the upper surface of the main connecting member 10, and cooperates with the trigger member 30, and another part of which passes through the main connecting member 10 from the lower surface of the main connecting member 10, and cooperates with the sliding door lock pin 1000 at the lower surface, so that the sliding door lock pin 1000 can link the toggle member 70;

[0045] Specifically, during implementation, a main connecting member 10 is provided to facilitate the installation of the electromagnetic lock of the safety door to the required position; the main connecting member 10 is connected with an electromagnet 20, a trigger member 30, a first step shaft 40, a torsion spring 50, a first travel switch 60 and a toggle member 70. When the door body needs to be opened, the electromagnet 20 is energized, and the trigger member 30 is linked to rotate the first step shaft 40 as the rotation center. The trigger member 30 is disengaged from the toggle member 70, and the first travel switch 60 is in a released state, and a door opening signal is transmitted to the door controller DCU. The driver in the door controller DCU drives the motor to work, and the motor drives the sliding door to move. The sliding door drives the sliding door lock pin 1000 to push the toggle member 70 open, and the door body is opened; thereby overcoming the technical problems of large volume, difficult installation, high failure rate, and unstable performance, and achieving the technical effect of relatively small volume, convenient installation, good reliability, and relatively low failure rate;

[0046] The following is a detailed description of each component and its connection relationship:

[0047] Specifically, if Figure 1 , Figure 2 , Figure 4 As shown, the main connecting member 10 is square in shape and generally made of metal, and is used to install the electromagnetic lock of the safety door to the required position; the first shaft 11 is a round shaft, which is welded on the main connecting member 10 and can limit the torsion spring 50;

[0048] Specifically, if Figure 1 , Figure 2 As shown, the electromagnet 20 is a common structure in the prior art, which is connected to the main connecting member 10 by inserting a screw through a bent profile, and one end is connected to the trigger member 30 by a screw, and the trigger member 30 is inserted with a screw and is threadedly connected to the threaded blind hole reserved at the end of the telescopic shaft of the electromagnet 20;

[0049] The torsion spring 50 is a common structure in the prior art, with the middle part sleeved on the first stepped shaft 40, and the two ends limited between the first shaft 11 and the trigger member 30. When the trigger member 30 is pushed to rotate by the electromagnet 20, the torsion spring 50 can form a torsion force, so that when the sliding door lock pin 1000 pushes the toggle member 70 open, the protrusion 311 on the trigger member 30 is always in contact with the outer edge of the inner lock plate 73, which is conducive to the protrusion 311 smoothly entering the second notch 731 when closing the door body, and the door body is opened or closed more smoothly;

[0050] The first travel switch 60 is a commonly used micro switch in the prior art, and is connected to the main connecting member 10 by inserting screws into the profile;

[0051] After reading the contents disclosed in the present invention, a person skilled in the art can directly and undoubtedly know how to set the electromagnet 20, the torsion spring 50 and the first travel switch 60 without paying creative labor or conducting excessive experiments.

[0052] Specifically, if Figure 1 , Figure 2 , Figure 3 As shown, the trigger member 30 includes: a first member 31, the middle part of which is connected to the first stepped shaft 40, and the two ends extend outward from the middle part to form an angle, one end extends to the first travel switch 60, and the other end extends to the toggle member 70, and has a protrusion 311 that can be engaged with the toggle member 70;

[0053] and a second member 32, vertically connected to the upper surface of the first member 31, for connecting with the electromagnet 20;

[0054] During implementation, the first member 31 is formed by stamping a plate, and then partially bent, the bent portion is used to contact or separate with the first travel switch 60, and is provided with a first through hole, which is clearance-matched with the first stepped shaft 40, so that the trigger member 30 can be positioned on the first stepped shaft 40, and can rotate with the first stepped shaft 40 as the rotation center, and the angle;

[0055] The second member 32 is formed by stamping a plate, and then welded to the first member 31, and a screw is inserted through the second member 32 to be threadedly connected to a threaded blind hole reserved at the end of the telescopic shaft of the electromagnet 20, so that the trigger member 30 is connected to the electromagnet 20;

[0056] A trigger member 30 is provided. Under the action of the electromagnet 20, the trigger member 30 is respectively in contact with or separated from the first travel switch 60 and the toggle member 70, thereby realizing the opening or closing of the door body.

[0057] Specifically, if Figure 1 , Figure 2 , Figure 5 As shown, the first stepped shaft 40 comprises: a stepped shaft section 41 having a circular annular groove 411, one end of which is connected to the main connecting member 10, and the other end of which passes through the trigger member 30 and is used to connect the torsion spring 50;

[0058] and a first plate 42 connected to the top of the stepped shaft segment 41, wherein the outer diameter of the first plate 42 is greater than the outer diameter of the stepped shaft segment 41 at the largest point;

[0059] During implementation, the stepped shaft segment 41 is machined from a section of round steel, and one end thereof is tightly matched with the second through hole reserved on the main connecting member 10, so that the stepped shaft segment 41 is reliably connected to the main connecting member 10;

[0060] The first plate 42 is circular in shape and is connected to the top of the stepped shaft section 41 by countersunk screws or welded to the top of the stepped shaft section 41 to form a barrier to prevent the torsion spring 50 from falling off;

[0061] A circular groove 411 is provided for connecting the first retaining spring and limiting the trigger member 30, so as to prevent the trigger member 30 from moving on the stepped shaft section 41, thereby improving the reliability of the structure;

[0062] Specifically, if Figure 1 , Figure 2 , Figure 6 , Figure 7 , Figure 8 , Fig. 9 As shown, the toggle member 70 includes: an outer lock plate 71, which is connected to the main connecting member 10 through a bearing assembly 72, and cooperates with the sliding door lock pin 1000 through a first notch 711;

[0063] and an inner lock plate 73 having a second notch 731 on its outer edge, connected to the top of the outer lock plate 71, disposed between the electromagnet 20 and the upper surface of the main connecting member 10, and capable of engaging with the protrusion 311 through the second notch 731;

[0064] During implementation, the outer lock plate 71 is machined by forging a blank, and comprises: a shaft section, which is inserted into a first stepped through hole reserved on the main connecting member 10 and connected to the bearing assembly 72; and a stopper plate, which has a first notch 711 and has an approximately airplane-shaped appearance, and can cooperate with the sliding door lock pin 1000;

[0065] The bearing assembly 72 includes: two deep groove ball bearings, and two second retaining springs; one second retaining spring is connected to the first stepped through hole and is arranged between the two deep groove ball bearings; the other second retaining spring is connected to the shaft section to form a block for limiting the positions of the two deep groove ball bearings, so that the outer lock plate 71 can be reliably connected to the main connecting member 10 through the bearing assembly 72;

[0066] The inner lock plate 73 is circular in shape and is connected to the outer lock plate 71 by means of hexagon socket bolts;

[0067] A toggle member 70 is provided, and the second notch 731 on the inner lock plate 73 is engaged with the protrusion 311, so that the door body can be reliably closed; when the second notch 731 is disengaged from the protrusion 311, the sliding door lock pin 1000 can be linked with the toggle member 70 to rotate, so that the door body is opened;

[0068] Embodiment 2:

[0069] like Fig.10 , Fig.11 As shown; on the basis of the first embodiment, it also includes: a manual unlocking member 80 connected to the main connecting member 10;

[0070] The manual unlocking member 80 includes: a second travel switch 81 connected to the upper surface of the main connecting member 10;

[0071] The second stepped shaft 82 is passed through the main connecting member 10, has a clearance fit with the main connecting member 10, can move on the main connecting member 10, has a tapered surface 821 at one end, contacts the trigger member 30 through the tapered surface 821, and the other end protrudes outside the lower surface of the main connecting member 10;

[0072] A spring 83 is sleeved on the second stepped shaft 82, with one end of the spring 83 being in contact with the lower surface of the main connecting member 10;

[0073] and a handle 84 connected to the other end of the second stepped shaft 82 to press the other end of the spring 83 so that the spring 83 is always in a slightly compressed state;

[0074] In practice, the second travel switch 81 adopts a common micro switch in the prior art, is connected to the main connecting member 10 by screws inserted into the profile, and can be triggered by the second stepped shaft 82; after reading the contents disclosed in the present invention, a person skilled in the art can directly and unambiguously know how to set the second travel switch 81 without creative labor or excessive experiments;

[0075] The second stepped shaft 82 is machined from a section of round steel;

[0076] The spring 83 is a cylindrical spring in the prior art;

[0077] The handle 84 is machined from a section of round steel and is threadedly connected to the external thread section on the outer circumference of the second stepped shaft 82, making installation and disassembly very convenient;

[0078] A manual unlocking member 80 is provided. When the electromagnet 20 fails or an emergency occurs, the manual unlocking device on the sliding door is operated, the manual unlocking device presses the handle 84, the spring 83 continues to be compressed, and the second stepped shaft 82 pushes the trigger member 30 to rotate, so that the second notch 731 is disengaged from the protrusion 311, and at the same time, the second stepped shaft 82 triggers the second travel switch 81, which transmits a manual unlocking signal to the DCU, so that the sliding door lock pin 1000 can push the toggle member 70 open, and the door body is opened;

[0079] The working principle of the present invention is as follows:

[0080] How unlocking works:

[0081] When the door needs to be opened, the central control panel PSC outputs a door opening command. After the door controller DCU receives the door opening command, the electromagnet 20 is energized, and the trigger member 30 is linked to rotate around the first step shaft 40. The trigger member 30 is disengaged from the toggle member 70, and the first travel switch 60 is in a released state, which transmits a door opening signal to the DCU. The driver in the door controller DCU sends a command to drive the motor to move, and the motor drives the sliding door body to move, so that the sliding door lock pin 1000 can push the toggle member 70 open, and the door body is opened.

[0082] How latching works:

[0083] When the door needs to be closed, the central control panel PSC outputs a door closing command. After receiving the door closing command, the driver in the door controller DCU drives the motor to move the door, and the sliding door lock pin 1000 drives the toggle member 70 under the drive of the door, so that the second notch 731 is engaged with the protrusion 311, and the toggle member 70 cannot continue to rotate. At the same time, the trigger member 30 contacts the first travel switch 60, and the first travel switch 60 transmits a locking signal to the DCU, and the door is closed.

[0084] How manual unlock works:

[0085] When the door body is in a closed state and the electromagnet 20 fails or an emergency occurs, it needs to be opened manually by operating the manual unlocking device on the sliding door body. The manual unlocking device touches the handle 84, and the spring 83 continues to be compressed. The second step shaft 82 pushes the trigger member 30 to rotate, so that the second notch 731 is disengaged from the protrusion 311, and the first stroke switch 60 is in a released state, which transmits a door opening signal to the door controller DCU, and the safety circuit is disconnected. At the same time, the second step shaft 82 triggers the second stroke switch 81, which transmits a manual unlocking signal to the door controller DCU. Manually pushing the door causes the door body to start moving, and the sliding door drives the sliding door lock pin 1000 to move. The sliding door lock pin 1000 pushes the toggle member 70 open, and the door body is opened. The second stroke switch 81 transmits a signal to the driver in the door controller DCU. After 30 seconds, the driver will issue a command to drive the motor to close the door.

[0086] In the description of the present invention, it is necessary to understand that the terms "up", "down", "left", "right", "front", "back" and the like indicating directions or positional relationships are based on the positional relationships described in the accompanying drawings and are only for the convenience of describing the present invention or simplifying the description, rather than indicating a specific direction that must be possessed; the operating process described in the embodiments is not an absolute usage procedure and corresponding adjustments may be made during actual use.

[0087] Unless otherwise defined, the technical or scientific terms used herein shall have the usual meanings understood by persons having ordinary skills in the field to which the invention belongs; the words "first", "second" and similar terms used in the specification and claims of the present invention do not indicate any order, quantity or importance, but are only used to distinguish different components. Similarly, words such as "one" or "an" do not necessarily indicate a quantity limitation, but rather indicate the existence of at least one, which needs to be determined based on the content of the embodiment.

[0088] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A safety door electromagnetic lock, characterized in that: include: A main connecting member (10) having a first axis (11) on its upper surface; an electromagnet (20) connected to the upper surface of the main connecting member (10); A trigger member (30) is connected to the upper surface of the main connecting member (10) via a first stepped shaft (40), and one end of the trigger member is connected to the electromagnet (20). Under the action of the electromagnet (20), the trigger member (30) rotates at an angle with the first stepped shaft (40) as the rotation center; a torsion spring (50), which is sleeved on the first stepped shaft (40) and is limited between the first shaft (11) and the trigger member (30); A first travel switch (60) connected to the upper surface of the main connecting member (10) and capable of contacting or separating from the other end of the trigger member (30); and a toggle member (70) connected to the main connecting member (10) and capable of passing through the main connecting member (10), a portion of which is disposed between the electromagnet (20) and the upper surface of the main connecting member (10) and cooperates with the trigger member (30), and another portion of which passes through the main connecting member (10) from the lower surface of the main connecting member (10) and cooperates with the sliding door lock pin (1000) at the lower surface, so that the sliding door lock pin (1000) can be linked to the toggle member (70); The trigger member (30) comprises: a first member (31), the middle portion of which is connected to the first stepped shaft (40), the two ends of which extend outward from the middle portion to form an angle, one end of which extends to the first travel switch (60), and the other end of which extends to the toggle member (70), and has a protrusion (311) capable of engaging with the toggle member (70); and a second member (32) vertically connected to the upper surface of the first member (31) and used to be connected to the electromagnet (20); The first stepped shaft (40) comprises: a stepped shaft section (41) having a circular groove (411), one end of which is connected to the main connecting member (10), and the other end of which passes through the trigger member (30) and is used to connect to the torsion spring (50); and a first plate (42) connected to the top of the stepped shaft section (41), wherein the outer diameter of the first plate (42) is greater than the outer diameter of the stepped shaft section (41) at its largest point.

2. The electromagnetic lock for a safety door according to claim 1, characterized in that: The toggle member (70) comprises: an outer lock plate (71), which is connected to the main connecting member (10) via a bearing assembly (72) and cooperates with the sliding door lock pin (1000) via a first notch (711); and an inner lock disk (73) having a second notch (731) on its outer edge, connected to the top of the outer lock disk (71), arranged between the electromagnet (20) and the upper surface of the main connecting member (10), and capable of engaging with the protrusion (311) through the second notch (731).

3. The electromagnetic lock for a safety door according to claim 1, characterized in that: Also includes: A manual unlocking member (80) connected to the main connecting member (10); The manual unlocking member (80) comprises: a second travel switch (81) connected to the upper surface of the main connecting member (10); A second stepped shaft (82) is passed through the main connecting member (10), is loosely fitted with the main connecting member (10), and is capable of moving on the main connecting member (10), one end of the second stepped shaft having a conical surface (821) and contacts the trigger member (30) through the conical surface (821), and the other end of the second stepped shaft protrudes outside the lower surface of the main connecting member (10); A spring (83) is sleeved on the second stepped shaft (82), with one end of the spring being in contact with the lower surface of the main connecting member (10); And a handle (84) is connected to the other end of the second stepped shaft (82) and presses the other end of the spring (83).

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