An electric door lock, a swing electric door and rail transportation equipment

Abstract

The present invention relates to the field of rail transit technology, and in particular to an electric door lock, including an electromagnetic power element with a linear power output end, and also includes an external latch lock; the external latch lock includes a latch, an elastic sheet, a partial sphere and a ball seat structure; the latch is coaxially connected to the partial sphere, and the ball seat structure partially fits and covers the partial sphere through a first limiting space; the elastic sheet is annularly sleeved on the periphery of the partial sphere, and is arranged between the ball seat structure and the latch, and fits with the first plane on the ball seat structure and the second plane on the latch respectively; when the first plane and the second plane are not parallel, the elastic sheet undergoes local deformation to obtain a reset force that causes the first plane and the second plane to return to a parallel position, and a locking groove is provided at the end of the latch. The present invention can effectively ensure the stability of the use of the electromagnetic power element and ensure its service life. At the same time, the present invention also requests protection for a swing electric door and rail transit equipment.

Description

Technical Field

[0001] The present invention relates to the technical field of rail transportation, and in particular to an electric-controlled door lock, a swing electric door and rail transportation equipment. Background Art

[0002] As a relatively safe and practical lock body structure, electromagnetic locks are widely used in rail transit equipment; for example, for the swing door structure of some rail trains, electromagnetic locks can be set on the top and / or bottom body frames, and the electromagnetic locks are driven in a linear manner; and correspondingly, a pin hole structure for inserting the electromagnetic lock is set on the door body; through the above structure, after the door body is closed, the door body can be locked by inserting the lock tongue structure of the electromagnetic lock into the pin hole structure.

[0003] However, the electromagnetic lock used in the above scenario is very easy to be damaged because when the electromagnet is working, the iron core cannot withstand lateral impact force. When it withstands lateral impact force, the uniformity of the internal air gap will change due to the eccentricity of the iron core, thereby significantly reducing the attraction force of the electromagnet. Based on the above problem, if the lock tongue structure is directly connected to the electromagnet core, then due to the lever effect, the slight lateral displacement of the lock tongue will cause a large lateral deviation of the electromagnet, thereby shortening the service life and posing a certain risk. Summary of the invention

[0004] The present invention provides an electric door lock, which effectively solves the problems pointed out in the background technology. At the same time, the present invention also seeks to protect a swing electric door and rail transportation equipment.

[0005] In order to achieve the above object, the technical solution adopted by the present invention is:

[0006] An electric controlled door lock includes an electromagnetic power element having a linear power output end and an external latch lock;

[0007] The external latch lock comprises a latch, an elastic sheet, a partial sphere and a ball seat structure;

[0008] The latch is coaxially connected to the partial sphere, and the ball seat structure partially fits and covers the partial sphere through the first limiting space, allowing the partial sphere to rotate and restricting the partial sphere from moving out of the first limiting space;

[0009] The elastic sheet is annularly sleeved around the periphery of the partial sphere, and is disposed between the ball seat structure and the latch, and is respectively in contact with a first plane on the ball seat structure and a second plane on the latch;

[0010] When the first plane and the second plane are parallel, the elastic sheet does not deform; otherwise, the elastic sheet undergoes partial deformation to obtain a restoring force that causes the first plane and the second plane to return to a parallel position;

[0011] The linear power output end is fixedly connected to the ball seat structure;

[0012] The end of the latch pin is provided with a locking groove for allowing an external structure to enter and limit axial movement.

[0013] Furthermore, the elastic sheet body includes an annular portion, and a plurality of supporting feet evenly distributed around the periphery of the annular portion;

[0014] The annular portion is a planar structure, and the supporting foot smoothly extends along a curve on one side of the annular portion and is tangentially connected to the annular portion.

[0015] Furthermore, the annular portion is arranged to fit the latch.

[0016] Furthermore, the elastic sheet body further comprises auxiliary feet, which are evenly distributed around the periphery of the annular portion and are disposed between at least a portion of the supporting feet;

[0017] The auxiliary foot and the supporting foot are arranged on the same side relative to the annular portion and extend along a curve;

[0018] Wherein, the end of the auxiliary foot is lower than the end of the supporting foot.

[0019] Furthermore, the number of the auxiliary feet and the number of the supporting feet are arranged in one-to-one correspondence.

[0020] Furthermore, the auxiliary leg is equal to the supporting leg in length and width.

[0021] A swing electric door, comprising: a door body, a guide rail assembly and a locking device, wherein the locking device is used correspondingly to the electric controlled door lock as described above;

[0022] The door body is connected to the guide rail assembly and, under the guidance of the guide rail assembly, performs a combined motion of relatively approaching or moving away from the vehicle body, and moving in a straight line outside the vehicle body;

[0023] The locking device is arranged at the top and / or bottom of the door body, and includes a radial locking component and an axial locking component;

[0024] The radial locking assembly is used for inserting the latch pin and limiting the radial position of the latch pin, and includes:

[0025] The sliding ball seat has an outer wall which is a partially spherical surface, and is provided with a through hole for the bolt to pass through inside, and the through hole is provided with a chamfered structure at one edge of the through hole for the bolt to enter;

[0026] The sliding mounting seat partially covers the sliding ball seat through the second limiting space, allowing the sliding ball seat to rotate and limiting the sliding ball seat from moving out of the second limiting space. The position where the sliding mounting seat is installed on the door body is provided with a guide structure to linearly guide the sliding mounting seat along the length direction of the vehicle body;

[0027] Two springs are respectively arranged on both sides of the sliding mounting seat, with two ends respectively fixedly connected to the door body and the sliding mounting seat, and the axis is arranged along the guide direction of the guide structure, and the springs limit the movement of the sliding mounting seat relative to the guide structure when pressed;

[0028] The axial locking assembly is used to partially enter the locking groove to limit axial movement after the latch is inserted into place.

[0029] Further, the axial locking assembly includes two metal strips and a linear power source;

[0030] The two metal strips are symmetrically arranged on both sides of the latch, one end of the two metal strips is rotatably arranged around a first rotating shaft fixed relative to the door body, and the other end is rotatably arranged around a rotating shaft arranged on the power output end of the linear power source. The linear power source outputs linear power, so that the two metal strips enter or move away from the locking groove on the latch through synchronous deformation.

[0031] Furthermore, the locking device also includes an L-shaped bracket, the linear power source is an electric cylinder, which is installed in the angle between the two sides of the L-shaped bracket, and the linear power output end fits through the first side of the L-shaped bracket, wherein a spring is fixedly connected to the first side.

[0032] A rail transit equipment adopts the above-mentioned swing electric door.

[0033] The technical solution of the present invention can achieve the following technical effects:

[0034] The present invention can effectively ensure the use stability of the electromagnetic power element and ensure its service life. At the same time, the present invention also seeks protection for a swing electric door and rail transportation equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0036] Figure 1 It is a schematic diagram of the disassembly of a part of the sphere, the elastic sheet and the latch;

[0037] Figure 2 This is a schematic diagram of an electric door lock with part of the ball seat structure omitted;

[0038] Figure 3 It is a structural diagram of an electric door lock;

[0039] Figure 4 It is a partial schematic diagram of the ball seat structure;

[0040] Figure 5 for Figure 3 A cross-sectional view of

[0041] Figure 6 A schematic diagram of the structure of an elastic sheet;

[0042] Figure 7 is another structural schematic diagram of the elastic sheet;

[0043] Figure 8 It is a front view of the elastic sheet (including partial enlargement);

[0044] Fig. 9 This is a schematic diagram of the door body, guide rail assembly and vehicle body:

[0045] Fig.10 It is a schematic diagram of the locking device and the door body when the electric door lock is locked in place;

[0046] Fig.11 for Fig.10 A cross-sectional view of

[0047] Fig.12 This is a schematic diagram of the locking device omitting the sliding mounting seat and spring when the electric door lock is locked in place;

[0048] Fig.13 It is a schematic diagram of the locking device when the electric door lock is locked in place;

[0049] Fig.14 It is a schematic diagram of the arrangement of the metal strip relative to the linear power source;

[0050] Figure numerals: 1. linear power output end; 2. latch; 21. locking groove; 3. elastic sheet; 31. annular portion; 32. supporting foot; 33. auxiliary foot; 4. partial sphere; 5. ball seat structure; 51. first limit space; 6. door body; 7. guide rail assembly; 8. vehicle body; 91. sliding ball seat; 92. sliding mounting seat; 93. spring; 94. metal strip; 95. linear power source. DETAILED DESCRIPTION

[0051] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0052] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0053] like Figures 1 to 5 As shown, an electric door lock comprises: an electromagnetic power element with a linear power output end 1, and also comprises an external latch lock; the external latch lock comprises a latch 2, an elastic sheet 3, a partial sphere 4 and a ball seat structure 5; the latch 2 is coaxially connected to the partial sphere 4, and the ball seat structure 5 partially fits and covers the partial sphere 4 through a first limiting space 51, allowing the partial sphere 4 to rotate and restricting the partial sphere 4 from moving out of the first limiting space; the elastic sheet 3 is annularly sleeved on the periphery of the partial sphere 4, and is arranged between the ball seat structure 5 and the latch 2, and fits with the first plane on the ball seat structure 5 and the second plane on the latch 2 respectively; when the first plane and the second plane are parallel, the elastic sheet 3 is not deformed; otherwise, the elastic sheet 3 is partially deformed to obtain a reset force that causes the first plane and the second plane to return to a parallel position; the linear power output end 1 is fixedly connected to the ball seat structure 5; a locking groove 21 is provided at the end of the latch 2 for the external structure to enter and restrict axial movement.

[0054] The present invention provides an electric-controlled door lock with an external structure, which can effectively ensure the use stability of the electromagnetic power element and ensure its service life.

[0055] During operation, the elastic sheet 3 is arranged so that the first plane and the second plane can stably maintain a parallel state under normal conditions, so that the ball seat structure 5 where the first plane is located and the pin 2 where the second plane is located can obtain a relatively stable positional relationship.

[0056] When the door body 6 to be locked is closed in place, linear force can be output by controlling the electromagnetic power element, and the entire external latch lock is inserted into the corresponding pin hole structure on the door body 6 under the drive of the linear force, thereby realizing the locking of the door body 6; and when the door body 6 to be locked cannot be closed in place due to various reasons and there is a slight deviation, assuming that the latch 2 can still be inserted, but it will inevitably be subjected to lateral impact force, then in this case, the pin shaft will drive part of the ball 4 to rotate relative to the ball seat structure 5, thereby reducing the impact on the electromagnetic power element. Under this optimization measure, the service life of the electromagnetic power element will be effectively extended; wherein, the part where the electromagnetic power element is connected to the ball seat structure 5 can be the lock tongue structure in the prior art.

[0057] As a preferred embodiment of the above, Figure 6 As shown, the elastic sheet 3 includes an annular portion 31 and a plurality of support legs 32 evenly distributed around the outer periphery of the annular portion 31; the annular portion 31 is a planar structure, and the support legs 32 smoothly extend along a curve on one side of the annular portion 31 and are tangentially connected to the annular portion 31. Through the arrangement of the support legs 32, when any side of the elastic sheet 3 is squeezed by the first plane and the second plane, the support legs 32 at the corresponding position can be deformed to generate a restoring force, and in this way, after the external force for squeezing is removed, the first plane and the second plane can be quickly restored to a parallel state.

[0058] Among them, the setting method of tangently connecting the supporting foot 32 to the annular portion 31 is more critical. In this way, after the supporting foot 32 is subjected to the extrusion force, the deformation will not occur at the position connected with the annular portion 31, but only the supporting foot 32 will produce its own deformation, thereby forming protection for the connection on the one hand, and generating a relatively stable reset force through its own deformation on the other hand.

[0059] As a preferred embodiment of the above, the annular portion 31 is fitted with the latch 2, that is, the supporting foot 32 is fitted with the first plane on the ball seat structure 5, so as to adapt to the curvature of part of the sphere 4. This method is more suitable for the setting form of a small space.

[0060] During operation, when the latch 2 is subjected to a lateral impact and produces appropriate rotation, in the initial process of the rotation of the partial sphere 4 relative to the ball seat structure 5, the contact surface between the two is large. In order to avoid jamming, the reset force is preferably smaller, thereby ensuring smooth relative rotation between the partial sphere 4 and the ball seat structure 5 through a lower degree of restriction; and when the relative rotation between the two reaches a certain extent, a larger reset force is better.

[0061] In order to achieve this purpose, as a preferred embodiment of the above, Figure 7 and 8As shown, the elastic sheet 3 also includes auxiliary feet 33, which are evenly distributed around the periphery of the annular portion 31 and are arranged between at least part of the supporting feet 32; the auxiliary feet 33 and the supporting feet 32 ​​are arranged on the same side relative to the annular portion 31 and extend along a curve; wherein the end of the auxiliary feet 33 is lower than the end of the supporting feet 32.

[0062] Through this arrangement, when the parallel relationship between the first plane and the second plane is broken, the support foot 32 is deformed first, and the reset force generated by this deformation is limited, so the obstruction to the relative rotation between the part of the ball and the ball seat structure 5 is limited; and when the deformation reaches a certain degree, the auxiliary foot 33 at the corresponding position will begin to deform, and at this time, the deformation of the auxiliary foot 33 and the support foot 32 can generate a greater reset force, thereby achieving a better buffering effect on the one hand, and on the other hand, when the pin 2 is pulled out, a faster and more accurate reset can be achieved. As a preferred embodiment, the number of auxiliary feet 33 and support feet 32 ​​is set one by one.

[0063] In order to reduce the difficulty of processing, as a preferred embodiment of the above, the length and width of the auxiliary foot 33 and the supporting foot 32 are equal. In this way, the auxiliary foot 33 and the supporting foot 32 can be obtained by bending a sheet structure with the same size around the annular portion 31, and in this way, the annular portion 31 and the sheet structure before bending can be obtained by stamping the complete sheet, and the material can be removed in one stamping, and the forming of different bending degrees can be achieved in the second stamping; of course, if the processing conditions permit, the material removal and forming can also be achieved simultaneously in one stamping.

[0064] In the existing rail transit equipment, a swing door body 6 is mostly used. During the use of the swing door body 6, there may be a problem that the swing door body 6 cannot move into place in the length direction of the vehicle body 8, so that the stable position of the latch 2 may be subject to lateral impact force when inserted; in order to solve this problem, the following embodiment provides a swing electric door that can use the electric door lock in the above embodiment to solve the damage caused to related structures such as the electromagnetic lock when the swing door body produces a slight movement deviation.

[0065] The specific implementation is as follows: Figures 9 to 13 As shown, a swing electric door comprises: a door body 6, a guide rail assembly 7 and a locking device, the locking device being used in correspondence with the electric door lock as described above; the door body 6 is connected to the guide rail assembly 7, and under the guidance of the guide rail assembly 7, performs a combined motion form of relatively approaching or moving away from a vehicle body 8, and moving in a straight line outside the vehicle body 8; the locking device is arranged at the top and / or bottom of the door body 6, and comprises a radial locking assembly and an axial locking assembly; the radial locking assembly is inserted into the bolt 2, and limits the radial position of the bolt 2, and comprises:

[0066] The sliding ball seat 91 has an outer wall that is a partially spherical surface, and is provided with a through hole for the bolt 2 to pass through. The through hole is provided with a chamfered structure on one edge of the side for the bolt 2 to enter; the sliding mounting seat 92 partially fits and covers the sliding ball seat 91 through the second limiting space, allowing the sliding ball seat 91 to rotate and limiting the sliding ball seat 91 from moving out of the second limiting space, and the position where the door body 6 installs the sliding mounting seat 92 is provided with a guide structure to guide the sliding mounting seat 92 in a straight line along the length direction of the vehicle body 8; two springs 93 are respectively provided on both sides of the sliding mounting seat 92, and the two ends are respectively fixedly connected relative to the door body and the sliding mounting seat 92, and the axis is provided along the guide direction of the guide structure. The spring 93 limits the movement of the sliding mounting seat 92 relative to the guide structure when pressed; the axial locking assembly is used to partially enter the locking groove 21 to limit the axial movement after the bolt 2 is inserted into place.

[0067] In this preferred embodiment, the electric door lock is arranged at a setting position on the vehicle body 8, and the guide rail assembly 7 is installed on the vehicle body 8 to realize stable guidance of the door body 6; in the process of inserting the pin 2 into the through hole on the sliding ball seat 91, when the door body 6 has a slight position deviation in the length direction of the vehicle, the slight rotation of the sliding ball seat 91, and the movement of the sliding mounting seat 92 driven by the sliding ball seat 91 along the straight line will adapt to the above-mentioned position deviation, and specifically adapt to the pin 2 with a slight tilt angle; specifically, when the pin 2 contacts the sliding ball seat 91 in the straight line direction, it will be guided into the through hole due to the chamfered structure of the edge. At this time, if there is a slight position deviation between the pin 2 and the through hole, part of the ball 4 will rotate at an appropriate angle relative to the ball seat structure 5, the sliding ball seat 91 will rotate at an appropriate angle relative to the sliding mounting seat 92, and the sliding mounting seat 92 will produce a slight movement relative to the guide structure; wherein, the movement direction of the sliding mounting seat 92 relative to the guide structure is determined, and the movement distance can be controlled by selecting the amount by which the spring 93 can be compressed.

[0068] When the above position is determined, the latch 2 is positioned in the radial direction; then, the latch 2 can be positioned in the axial direction by the operation of the axial locking assembly. In the above embodiment, it should be noted that the position deviation of the door body 6 needs to be within the set range. When the deviation is too large, the technical solution of the present invention cannot be solved. Specifically, when the latch 2 cannot enter the through hole on the sliding ball seat 91 through the guide, it can be considered that the door body 6 may have a fault.

[0069] When installing the locking device, Fig.10As shown, a groove is provided on the door body 6 to provide an installation position, and the embedded installation structure can ensure the beauty of the door body 6 and the stability of each structure during use; there are many possibilities for the selection of the guide structure, and it is more convenient to install a guide strip on the side wall of the corresponding installation position of the door body 6 and to provide a corresponding guide groove on the sliding mounting seat 92. Of course, switching the setting position of the guide strip and the guide groove, or adopting other guiding forms are also within the protection scope of the present invention.

[0070] As a preferred embodiment of the above, Fig.12 and 14 As shown, the axial locking assembly includes two metal strips 94 and a linear power source 95; the two metal strips 94 are symmetrically arranged on both sides of the bolt 2, one end of the two metal strips 94 is rotatably arranged around a first rotating shaft fixed relative to the door body, and the other end is rotatably arranged around a rotating shaft arranged on the power output end of the linear power source 95. The linear power source 95 outputs linear power, so that the two metal strips 94 enter or move away from the locking groove 21 on the bolt 2 through synchronous deformation.

[0071] After the latch 2 is inserted into place, the linear power source 95 can pull the two metal strips 94 to be relatively close to each other, so that they enter the locking groove 21 from both sides respectively. At this time, the locking groove 21 is preferably in the form of a ring, or two symmetrically arranged grooves; wherein, the metal strip 94 can be arranged to naturally move away from the latch 2 in a non-deformed state, and the linear power source 95 provides a pulling force on the metal strip 94 to cause it to deform; wherein, the linear power source 95 can select an electric cylinder, a motor-driven screw assembly or any other structural form that can achieve linear power output.

[0072] During installation, one end of one of the springs 93 and the metal strip 94 can be fixed by the same fixing structure, and the structure can be fixed relative to the door body 6; and in order to ensure the stable installation of the other spring 93 and the linear power source 95, as a preferred embodiment of the above, Fig.13 As shown, the locking device also includes an L-shaped bracket, and the linear power source 95 is an electric cylinder, which is installed in the angle between the two sides of the L-shaped bracket, and the output end of the linear power fits the first side of the L-shaped bracket, wherein a spring 93 is fixedly connected to the first side.

[0073] By setting the L-shaped bracket, the position stability of the piston rod relative to the cylinder body can be ensured during the use of the electric cylinder. The cylinder body is fixed relative to the bracket, and the movement of the piston rod is limited by the through hole mentioned above on the first side, thereby ensuring its service life. The L-shaped bracket also provides an installation position for the spring 93 to ensure the compactness of the structure.

[0074] A rail transit equipment adopts the above-mentioned swing electric door.

[0075] The above shows and describes the basic principles, main features and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. An electric door lock, comprising an electromagnetic power element having a linear power output end, characterized in that: Also includes an external deadbolt lock; The external latch lock comprises a latch, an elastic sheet, a partial sphere and a ball seat structure; The latch is coaxially connected to the partial sphere, and the ball seat structure partially fits and covers the partial sphere through the first limiting space, allowing the partial sphere to rotate and restricting the partial sphere from moving out of the first limiting space; The elastic sheet is annularly sleeved around the periphery of the partial sphere, and is disposed between the ball seat structure and the latch, and is respectively in contact with a first plane on the ball seat structure and a second plane on the latch; When the first plane and the second plane are parallel, the elastic sheet does not deform; otherwise, the elastic sheet undergoes partial deformation to obtain a restoring force that causes the first plane and the second plane to return to a parallel position; The linear power output end is fixedly connected to the ball seat structure; The end of the latch is provided with a locking groove for the external structure to enter and limit the axial movement; The elastic sheet body includes an annular portion and a plurality of supporting feet evenly distributed around the periphery of the annular portion; The annular portion is a planar structure, and the supporting foot smoothly extends along a curve on one side of the annular portion and is tangentially connected to the annular portion.

2. The electric door lock according to claim 1, characterized in that: The annular portion is arranged in close contact with the latch.

3. The electric door lock according to claim 1, characterized in that: The elastic sheet body further includes auxiliary feet, which are evenly distributed around the periphery of the annular portion and are disposed between at least a portion of the supporting feet; The auxiliary foot and the supporting foot are arranged on the same side relative to the annular portion and extend along a curve; Wherein, the end of the auxiliary foot is lower than the end of the supporting foot.

4. The electric door lock according to claim 3, characterized in that: The number of the auxiliary feet and the supporting feet is set in one-to-one correspondence.

5. The electric door lock according to claim 3 or 4, characterized in that: The auxiliary foot and the supporting foot are equal in length and width.

6. A swing electric door, characterized in that: include: A door body, a guide rail assembly and a locking device, wherein the locking device is used corresponding to the electric door lock as claimed in claim 1; The door body is connected to the guide rail assembly and, under the guidance of the guide rail assembly, performs a combined motion of relatively approaching or moving away from the vehicle body, and moving in a straight line outside the vehicle body; The locking device is arranged at the top and / or bottom of the door body, and includes a radial locking component and an axial locking component; The radial locking assembly is used for inserting the latch pin and limiting the radial position of the latch pin, and includes: The sliding ball seat has an outer wall which is a partially spherical surface, and is provided with a through hole for the bolt to pass through inside, and the through hole is provided with a chamfered structure at one edge of the through hole for the bolt to enter; The sliding mounting seat partially covers the sliding ball seat through the second limiting space, allowing the sliding ball seat to rotate and limiting the sliding ball seat from moving out of the second limiting space. The position where the sliding mounting seat is installed on the door body is provided with a guide structure to linearly guide the sliding mounting seat along the length direction of the vehicle body; Two springs are respectively arranged on both sides of the sliding mounting seat, with two ends respectively fixedly connected to the door body and the sliding mounting seat, and the axis is arranged along the guide direction of the guide structure, and the springs limit the movement of the sliding mounting seat relative to the guide structure when pressed; The axial locking assembly is used to partially enter the locking groove to limit axial movement after the latch is inserted into place.

7. The swing electric door according to claim 6, characterized in that: The axial locking assembly includes two metal strips and a linear power source; The two metal strips are symmetrically arranged on both sides of the latch, one end of the two metal strips is rotatably arranged around a first rotating shaft fixed relative to the door body, and the other end is rotatably arranged around a rotating shaft arranged on the power output end of the linear power source. The linear power source outputs linear power, so that the two metal strips enter or move away from the locking groove on the latch through synchronous deformation.

8. The swing electric door according to claim 7, characterized in that: The locking device also includes an L-shaped bracket, and the linear power source is an electric cylinder installed in the angle between the two sides of the L-shaped bracket, and the linear power output end fits the first side of the L-shaped bracket, wherein a spring is fixedly connected to the first side.

9. A rail transit equipment, characterized in that: The swing electric door as claimed in claim 6 is adopted.

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