Electromagnetic lock and charging gun

Abstract

The utility model discloses an electromagnetic lock and a charging gun, and the electromagnetic lock comprises an electromagnetic device and a moving device. The electromagnetic device is provided with a moving cavity in the axial direction of the electromagnetic device, a first fixing hole and a second fixing hole which are communicated with the moving cavity are formed in the two ends of the electromagnetic device in the axial direction of the electromagnetic device respectively, a bearing is fixedly arranged on the inner wall of the first fixing hole, and a penetrating hole is formed in the bearing. The two ends of the moving device penetrate out of the penetrating hole and the second fixing hole respectively, and the moving device moves in the axial direction under the action of electromagnetic force of the electromagnetic device. The utility model provides an electromagnetic lock and a charging gun. The technical problem that abrasion between penetrating holes in an existing electromagnetic lock moving device and an electromagnetic device is large is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of electromagnetic locks, in particular to an electromagnetic lock and a charging gun. Background Art

[0002] With the development of new energy electric vehicles, the popularity of electric vehicles is getting higher and higher, and the demand for charging equipment is increasing. As the most common charging interface of public charging piles, the importance of DC charging guns is self-evident. DC charging guns have the characteristics of high power and high current, and misoperation may cause extremely serious harm to the human body. The electromagnetic lock is a key component to protect the reliability of the physical connection during the charging process of the DC charging gun. Whether the electromagnetic lock can work normally is a crucial concern during the charging process. The axial back and forth movement of the mobile device in the existing electromagnetic lock in the fixed iron core will cause wear, rust, and jamming, which will make the locking function of the electromagnetic lock fail. Utility Model Content

[0003] The main purpose of the utility model is to provide an electromagnetic lock, aiming to solve the technical problem of large wear between the existing mobile device and the electromagnetic device.

[0004] To achieve the above object, the utility model provides an electromagnetic lock, comprising an electromagnetic device and a moving device.

[0005] The electromagnetic device is provided with a moving cavity along its axial direction, and the electromagnetic device is provided with a first fixing hole and a second fixing hole communicating with the moving cavity at two ends along its axial direction, a bearing is fixedly provided on the inner wall of the first fixing hole, and a through hole is provided in the bearing;

[0006] Two ends of the moving device pass through the through hole and the second fixing hole respectively, and the moving device moves axially under the action of the electromagnetic force of the electromagnetic device.

[0007] Optionally, in one embodiment of the present invention, the moving device includes a moving rod and a movable iron core, the moving rod is provided with a connecting portion, the movable iron core is fixedly connected to the connecting portion, the movable iron core is accommodated inside the moving cavity, and the movable iron core drives the moving rod to move axially under the action of the electromagnetic force of the electromagnetic device.

[0008] Optionally, in an embodiment of the present invention, the moving rod is further provided with a protruding portion, the protruding portion comprises a first protruding section and a second protruding section, the first protruding section protrudes from the through hole, and the second protruding section passes through the second fixing hole.

[0009] Optionally, in an embodiment of the present invention, the moving device further includes a pressing device, and the pressing device is provided on at least one of the first extending section and the second extending section.

[0010] Optionally, in one embodiment of the present invention, the pressing device is an electromagnetic bead;

[0011] And / or, the moving rod is a tin bar.

[0012] Optionally, in an embodiment of the present invention, a bearing is also provided in the second fixing hole, and the second extending section passes through a through hole of the bearing in the second fixing hole.

[0013] Optionally, in one embodiment of the present invention, the electromagnetic device includes a yoke and a coil arranged inside the yoke, the yoke is provided with mounting holes at both ends along the axial direction, a first fixing member and a second fixing member are respectively provided in the mounting holes, a first fixing member is provided with a first fixing hole along the axial direction, and a second fixing member is provided with a second fixing hole along the axial direction in the second fixing member.

[0014] Optionally, in an embodiment of the present invention, both the first fixing member and the second fixing member are fixed iron cores.

[0015] Optionally, in an embodiment of the present invention, the electromagnetic device further comprises a bobbin, the coil is wound around the outside of the bobbin, the movable cavity is formed inside the bobbin, and a magnetic block is circumferentially arranged on the outer surface of the middle portion of the bobbin.

[0016] The utility model also provides a charging gun, comprising a charging gun head and an electromagnetic lock as described in any one of the above items and arranged inside the charging gun head.

[0017] The electromagnetic lock of the utility model technical solution includes an electromagnetic device and a moving device. The electromagnetic device is provided with a moving cavity along its axial direction. The electromagnetic device is provided with a first fixing hole and a second fixing hole connected to the moving cavity at both ends along its axial direction. A bearing is fixed on the inner wall of the first fixing hole, and a through hole is provided in the bearing. The two ends of the moving device pass through the through hole and the second fixing hole respectively, and the moving device moves axially under the electromagnetic force of the electromagnetic device. By providing a bearing, the friction between the moving rod and the electromagnetic device is reduced, thereby reducing wear, thereby reducing rust, and further avoiding jamming and failure of the electromagnetic lock locking function. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the utility model 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 of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0019] Figure 1 This is a schematic diagram of the three-dimensional structure of an embodiment of the electromagnetic lock of the utility model;

[0020] Figure 2 A top view of an embodiment of an electromagnetic lock of the utility model;

[0021] Figure 3 for Figure 2 Schematic diagram of the cross section at AA in the middle;

[0022] Figure 4 The figure is a schematic diagram of the three-dimensional exploded structure of an embodiment of the electromagnetic lock of the utility model.

[0023] Description of Figure Numbers:

[0024] 100. Electromagnetic lock; 1. Electromagnetic device; 11. Yoke; 12. Coil; 13. Magnetic block; 14. Bearing; 141. Perforation; 15. Bobbin; 16. Moving cavity; 17. First fixing member; 171. First fixing hole; 18. Second fixing member; 181. Second fixing hole; 2. Moving device; 21. Moving rod; 211. Connecting part; 212. Extending part; 2121. First extending section; 2122. Second extending section; 22. Movable iron core; 23. Pressing device.

[0025] The realization of the purpose, functional features and advantages of the utility model will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0027] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back...) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0028] In addition, the descriptions of "first", "second", etc. in the present utility model are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, "and / or" in the full text includes three solutions. Taking A and / or B as an example, it includes technical solution A, technical solution B, and technical solution that satisfies both A and B; in addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present utility model.

[0029] Electromagnetic lock is a security device that uses electromagnetic principle to achieve locking and unlocking. The working principle of electromagnetic lock is to use the magnetism of electromagnet to achieve the locking and unlocking functions. Electromagnetic lock can be used in various devices, such as charging guns, which use electromagnetic locks to achieve the locking and unlocking of charging guns. The axial back and forth movement of the mobile device in the existing electromagnetic lock in the fixed iron core will cause wear, rust, and jamming, which will make the locking function of the electromagnetic lock ineffective, posing a safety hazard.

[0030] In view of this, the utility model proposes an electromagnetic lock 100, in which a bearing 14 is fixedly provided on the inner wall of the first fixing hole 171 of the electromagnetic device 1, and one end of the mobile device 2 passes through the through hole 141 in the bearing 14. By providing the bearing 14, the friction and wear between the mobile device 2 and the electromagnetic device 1 are reduced, thereby further avoiding the failure of the locking function of the electromagnetic lock 100 caused by jamming.

[0031] In order to better understand the above technical solution, the above technical solution is described in detail below with reference to the accompanying drawings.

[0032] like Figure 1 The electromagnetic lock 100 proposed in the embodiment of the utility model comprises an electromagnetic device 1 and a moving device 2; the electromagnetic device 1 is provided with a moving cavity 16 along its axial direction, and the electromagnetic device 1 is provided with a first fixing hole 171 and a second fixing hole 181 communicating with the moving cavity 16 at both ends of its axial direction, and a bearing 14 is fixedly provided on the inner wall of the first fixing hole 171, and a through hole 141 is provided in the bearing 14;

[0033] Two ends of the moving device 2 pass through the through hole 141 and the second fixing hole 181 respectively, and the moving device 2 moves along the axial direction under the electromagnetic force of the electromagnetic device 1 .

[0034] In the technical solution adopted in this embodiment, the electromagnetic lock 100 includes an electromagnetic device 1 and a moving device 2, wherein an electric current will pass through the electromagnetic device 1, and the electromagnetic force will be changed by the on and off of the electric current or the direction of the electric current, thereby controlling the movement of the moving device 2. The electromagnetic device 1 is provided with a moving cavity 16 along its axial direction, and the electromagnetic device 1 is provided with a first fixing hole 171 and a second fixing hole 181 connected to the moving cavity 16 at both ends of its axial direction. When the two ends of the moving device 2 directly pass through the first fixing hole 171 and the second fixing hole 181, at this time, the two ends of the moving device 2 and the first fixing hole 171 and the second fixing hole 181 are sliding friction, and the friction force is relatively large at this time, and the part will be worn out over time, thereby causing safety hazards. By fixing the bearing 14 on the inner wall of the first fixing hole 171, a through hole 141 is provided in the bearing 14, and the two ends of the moving device 2 respectively pass through the through hole 141 and the second fixing hole 181. At this time, when the moving device 2 moves axially again, due to the action of the bearing 14, there is sliding friction between the end of the moving device 2 adjacent to the bearing 14 and the bearing 14, which reduces the friction force, thereby reducing the wear between the moving device 2 and the wall of the through hole 141, and improving the safety performance.

[0035] Furthermore, in one embodiment of the utility model, the moving device 2 includes a moving rod 21 and a movable iron core 22. The moving rod 21 is provided with a connecting portion 211. The movable iron core 22 is fixedly connected to the connecting portion 211. The movable iron core 22 is accommodated inside the moving cavity 16. The movable iron core 22 drives the moving rod 21 to move axially under the action of the electromagnetic force of the electromagnetic device 1.

[0036] In the technical solution adopted in this embodiment, the moving device 2 includes a moving rod 21 and a movable iron core 22. The moving rod 21 is a slender rod-shaped body, and its two ends are respectively passed through the two ends of the electromagnetic device 1, so that the moving rod 21 can move along the axial direction without deviation. A connecting portion 211 is provided in the middle of the moving rod 21, and the movable iron core 22 is fixedly connected to the outer side of the connecting portion 211. The movable iron core 22 is accommodated in the moving cavity 16. Such a configuration enables the movable iron core 22 to move along the axial direction under the electromagnetic force of the electromagnetic device 1, thereby driving the moving rod 21 to move along the axial direction.

[0037] Furthermore, in an embodiment of the present invention, the moving rod 21 is further provided with an extension portion 212 , and the extension portion 212 includes a first extension section 2121 and a second extension section 2122 . The first extension section 2121 extends from the through hole 141 , and the second extension section 2122 passes through the second fixing hole 181 .

[0038] It can be understood that under the action of the electromagnetic force of the electromagnetic device 1, the movable iron core 22 will move axially in the movable cavity 16, thereby driving the protruding portion 212 to extend or retract into the first fixing hole 171 and the second fixing hole 181, thereby enabling the extension and retraction of the protruding portion 212 to trigger various switches.

[0039] Furthermore, in an embodiment of the present invention, the mobile device 2 further includes a pressing device 23 , and the pressing device 23 is disposed on at least one of the first extending section 2121 and the second extending section 2122 .

[0040] It is understandable that by arranging the pressing device 23 on at least one of the first extension section 2121 and the second extension section 2122, the movement of the moving rod 21 drives the movement of the pressing device 23, thereby realizing the pressing triggering of other switch components. Preferably, the pressing device 23 is an electromagnetic bead; and / or the moving rod 21 is a tin bar.

[0041] Furthermore, in an embodiment of the present invention, a bearing 14 is also disposed in the second fixing hole 181 , and the second extending section 2122 passes through the through hole 141 of the bearing 14 in the second fixing hole 181 .

[0042] It is understandable that the bearing 14 may be provided only in the first fixing hole 171 , or may be provided in both the first fixing hole 171 and the second fixing hole 181 , thereby reducing the wear of the first extending section 2121 and the second extending section 2122 at the same time.

[0043] Furthermore, in an embodiment of the utility model, the electromagnetic device 1 includes a yoke 11 and a coil 12 arranged inside the yoke 11, and the yoke 11 is provided with mounting holes at both ends along the axial direction, and a first fixing member 17 and a second fixing member 18 are respectively provided in the mounting holes, and a first fixing hole 171 is axially provided in the first fixing member 17, and a second fixing hole 181 is axially provided in the second fixing member 18.

[0044] It can be understood that the coil 12 is an element for converting electric energy and magnetic energy. It is composed of a metal winding, which is formed into a cylindrical shape in most cases, and can also be other shapes. When current passes through the coil 12, a magnetic field will be formed in the coil 12, and then the coil 12 can convert electric energy and magnetic energy. The yoke 11 is a component on the electromagnetic device 1 for enhancing the attraction of the coil 12, which encloses the magnetic lines of force generated by the coil 12 inside, thereby improving the efficiency of the electromagnet. The coil 12 is arranged inside the yoke 11, and the yoke 11 is provided with mounting holes at both ends along the axial direction, and the first fixing member 17 and the second fixing member 18 are respectively provided in the mounting holes, and the first fixing member 17 is provided with a first fixing hole 171 along the axial direction, and the second fixing member 18 is provided with a second fixing hole 181 along the axial direction. The bearing 14 is arranged in the first fixing hole 171, which strengthens the strength of the entire electromagnetic device 1. Preferably, the first fixing member 17 and the second fixing member 18 are both fixed iron cores.

[0045] Furthermore, the electromagnetic device 1 further comprises a bobbin 15 , the coil 12 is wound around the bobbin 15 , a moving cavity 16 is formed inside the bobbin 15 , and a magnetic block 13 is circumferentially arranged on the outer surface of the middle portion of the bobbin 15 .

[0046] It can be understood that by arranging the magnetic block 13 on the outer surface of the middle part of the bobbin 15, it is possible to generate a stronger magnetic force when the same current passes through the coil 12.

[0047] The embodiment of the present invention further provides a charging gun, which includes a charging gun head and the above electromagnetic lock 100, and the electromagnetic lock 100 is arranged inside the charging gun head. Since the electromagnetic lock 100 adopts all the technical solutions of the above embodiments, it has at least all the beneficial effects brought by the technical solutions of the above embodiments, which will not be described one by one here.

[0048] The above description is only an optional embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. An electromagnetic lock (100), comprising an electromagnetic device (1) and a moving device (2), characterized in that: The electromagnetic device (1) is provided with a movable cavity (16) along its axial direction, and a first fixing hole (171) and a second fixing hole (181) are respectively provided at two ends of the electromagnetic device (1) along its axial direction, and are communicated with the movable cavity (16). A bearing (14) is fixedly provided on the inner wall of the first fixing hole (171), and a through hole (141) is provided in the bearing (14); Two ends of the moving device (2) pass through the through hole (141) and the second fixing hole (181) respectively, and the moving device (2) moves axially under the action of the electromagnetic force of the electromagnetic device (1).

2. The electromagnetic lock (100) according to claim 1, characterized in that: The moving device (2) comprises a moving rod (21) and a movable iron core (22); the moving rod (21) is provided with a connecting portion (211); the movable iron core (22) is fixedly connected to the connecting portion (211); the movable iron core (22) is accommodated inside the moving cavity (16); and the movable iron core (22) drives the moving rod (21) to move axially under the action of the electromagnetic force of the electromagnetic device (1).

3. An electromagnetic lock (100) as claimed in claim 2, characterized in that: The moving rod (21) is also provided with an extension portion (212), and the extension portion (212) includes a first extension section (2121) and a second extension section (2122), wherein the first extension section (2121) extends from the through hole (141), and the second extension section (2122) passes through the second fixing hole (181).

4. An electromagnetic lock (100) as claimed in claim 3, characterized in that: The moving device (2) further comprises a pressing device (23), wherein the pressing device (23) is arranged on at least one of the first extending section (2121) and the second extending section (2122).

5. An electromagnetic lock (100) as claimed in claim 4, characterized in that: The pressing device (23) is an electromagnetic bead; And / or, the moving rod (21) is a tinplate bar.

6. An electromagnetic lock (100) as claimed in claim 3, characterized in that: A bearing (14) is also provided in the second fixing hole (181), and the second extending section (2122) passes through a through hole (141) of the bearing (14) in the second fixing hole (181).

7. An electromagnetic lock (100) according to any one of claims 2 to 6, characterized in that: The electromagnetic device (1) comprises a yoke (11) and a coil (12) arranged inside the yoke (11); the yoke (11) is provided with mounting holes at both ends along the axial direction; a first fixing member (17) and a second fixing member (18) are respectively arranged in the mounting holes; a first fixing hole (171) is axially arranged in the first fixing member (17); and a second fixing hole (181) is axially arranged in the second fixing member (18).

8. The electromagnetic lock (100) according to claim 7, characterized in that: The first fixing member (17) and the second fixing member (18) are both fixed iron cores.

9. An electromagnetic lock (100) as claimed in claim 8, characterized in that: The electromagnetic device (1) further comprises a bobbin (15), the coil (12) being wound around the outside of the bobbin (15), the moving cavity (16) being formed inside the bobbin (15), and a magnetic block (13) being provided on the outer surface of the middle portion of the bobbin (15) along the circumferential direction.

10. A charging gun, characterized in that: The charging gun comprises: A charging gun head and an electromagnetic lock (100) as claimed in any one of claims 1 to 9 arranged inside the charging gun head.

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