CN217205887U

CN217205887U - Electromagnetic lock

Info

Publication number: CN217205887U
Application number: CN202220455395.4U
Authority: CN
Inventors: 李风波
Original assignee: Dongguan Sifan Electronic Technology Co ltd
Current assignee: Dongguan Sifan Electronic Technology Co ltd
Priority date: 2022-03-03
Filing date: 2022-03-03
Publication date: 2022-08-16
Anticipated expiration: 2032-03-03

Abstract

The utility model belongs to the technical field of the tool to lock, especially, relate to an electromagnetic lock, including main part, movable iron core, solenoid and axle sleeve. The main body comprises a hollow pipe and limiting plates arranged at two ends of the hollow pipe. The electromagnetic coil is wound on the outer side wall of the hollow pipe and is limited between the two limiting plates. One end of the hollow pipe is provided with a guide sleeve, and the shaft sleeve is arranged at the other end of the hollow pipe. The movable iron core passes through the guide sleeve and the shaft sleeve in a sliding mode. The movable iron core is provided with a limiting part which is limited between the guide sleeve and the shaft sleeve. When the electromagnetic lock is used, the electromagnetic coil is powered on, the movable iron core is driven to stretch out of the main body or retract into the main body, the locking or opening effect is achieved, the shaft sleeve is sleeved on one side of the main body, the movable iron core penetrates through the shaft sleeve and slides in the shaft sleeve, the shaft sleeve plays a role in guiding, collision between the movable iron core and the main body is avoided, abnormal sound is generated, noise can be effectively eliminated or reduced as far as possible, and the service life of the electromagnetic lock can be prolonged.

Description

Electromagnetic lock

Technical Field

The utility model belongs to the technical field of the tool to lock, especially, relate to an electromagnetic lock.

Background

The electromagnetic lock is a lock controlled by an electromagnet as the name implies, namely a combination of the electromagnet and a switch. When the electromagnetic coil is electrified, electromagnetic attraction force is generated, so that the movable iron core in the electromagnetic coil can stretch and retract, and the on-off state control of the controlled object is completed. At present, electromagnetic switches are widely applied, such as industrial control systems and door lock systems. Because the main body part of the electromagnetic switch and the movable iron core can collide with each other, the 'clicking' sound with different degrees is generated, and for occasions with strict requirements on silence or high-end application scenes (such as high-end automobiles), the noise belongs to the noise which is to be eliminated or reduced as much as possible. Therefore, it is necessary to control noise generated during the operation of the electromagnetic switch. And lead to electromagnetic switch main part or movable iron core to cause wearing and tearing easily after colliding many times, or make movable iron core position take place the skew, lead to electromagnetic lock life short.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a amortization electromagnetic lock aims at solving the noise technical problem that the electromagnetic switch action in-process among the prior art produced.

In order to achieve the above object, an embodiment of the present invention provides an electromagnetic lock, which includes a main body, a movable iron core, an electromagnetic coil and a shaft sleeve. The main body comprises a hollow pipe and limiting plates arranged at two ends of the hollow pipe. The electromagnetic coil is wound on the outer side wall of the hollow pipe and is limited between the two limiting plates. One end of the hollow pipe is provided with a guide sleeve, and the shaft sleeve is arranged at the other end of the hollow pipe. The movable iron core passes through the guide sleeve and the shaft sleeve in a sliding mode. The movable iron core is provided with a limiting part which is limited between the guide sleeve and the shaft sleeve.

Further, one end of the shaft sleeve is arranged in the main body, and the other end of the shaft sleeve extends to the outer side of the main body.

Further, the movable iron core comprises a guide shaft, a connecting shaft and a compression spring. The connecting shaft passes through the shaft sleeve, and the guide shaft passes through the guide sleeve and is in threaded connection with the connecting shaft. The one end that the uide bushing is close to the connecting axle is provided with the taper hole, and the one end that the connecting axle stretched into the hollow tube is the toper structure for with the taper hole cooperation, compression spring is spacing between uide bushing and connecting axle.

Further, still include the shell, the main part sets up in the shell, and the one end of shell is integrative to be formed with the adapter sleeve that extends outwards, and the axle sleeve is located in the adapter sleeve.

Furthermore, one end of the shaft sleeve, which is close to the main body, is provided with a fixing part limited inside the shell.

Furthermore, a limiting ring is further arranged on the movable iron core, and a buffer gasket limited on one side of the limiting ring is further sleeved on the movable iron core.

Further, the sleeve is integrally molded with resin.

The embodiment of the utility model provides an above-mentioned one or more technical scheme in the electromagnetic lock have one of following technological effect at least:

1. when the electromagnetic lock is used, the electromagnetic coil is powered on, the movable iron core is driven to stretch out of the main body or retract into the main body, the locking or opening effect is achieved, the shaft sleeve is sleeved on one side of the main body, the movable iron core penetrates through the shaft sleeve and slides in the shaft sleeve, the shaft sleeve plays a role in guiding, collision between the movable iron core and the main body is avoided, abnormal sound is generated, noise can be effectively eliminated or reduced as far as possible, and the service life of the electromagnetic lock can be prolonged.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the embodiments or the prior art descriptions will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without inventive labor.

Fig. 1 is a schematic structural diagram of an electromagnetic lock provided by an embodiment of the present invention.

Fig. 2 is a cross-sectional view of an electromagnetic lock provided by an embodiment of the present invention.

Reference numbers: 100. a main body; 110. a hollow tube; 111. a guide sleeve; 112. a taper hole; 120. a limiting plate; 200. a movable iron core; 210. a limiting part; 220. a guide shaft; 230. a connecting shaft; 240. a compression spring; 250. a limiting ring; 251. a cushion washer; 300. an electromagnetic coil; 400. a shaft sleeve; 410. a fixed part; 500. a housing; 510. a connecting sleeve.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below by referring to the drawings are exemplary and intended to explain the embodiments of the present invention and are not to be construed as limiting the present invention.

In the description of the embodiments of the present invention, it should be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientation or positional relationship indicated in the drawings, which is only for convenience in describing the embodiments of the present invention and simplifying the description, and do not indicate or imply that the device or element so indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the embodiments of the present invention, "a plurality" means two or more unless specifically limited otherwise.

In the embodiments of the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly, e.g., as fixed or detachable connections or as an integral part; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the embodiments of the present invention can be understood by those skilled in the art according to specific situations.

In an embodiment of the present invention, referring to fig. 1 to 2, there is provided an electromagnetic lock including a main body 100, a movable core 200, an electromagnetic coil 300, and a shaft sleeve 400. The body 100 includes a hollow tube 110 and a stopper plate 120 disposed at both ends of the hollow tube 110. The electromagnetic coil 300 is wound on the outer side wall of the hollow tube 110 and is limited between the two limit plates 120. One end of the hollow tube 110 is provided with a guide sleeve 111, and a bushing 400 is provided at the other end of the hollow tube 110. The movable core 200 slidably passes through the guide sleeve 111 and the shaft sleeve 400. The movable core 200 is provided with a stopper 210 for stopping the position between the guide sleeve 111 and the sleeve 400. In this embodiment, when using the utility model provides an electromagnetic lock, solenoid 300 circular telegram, drive movable iron core 200 stretches out in main part 100 or indentation main part 100, realize the effect of locking or opening, axle sleeve 400 cover is established in one side of main part 100, movable iron core 200 passes axle sleeve 400, slide in axle sleeve 400, axle sleeve 400 plays the guide effect, avoid movable iron core 200 and main part 100 to bump, produce the abnormal sound, can effectual elimination or the noise that reduces as far as possible, and can prolong electromagnetic lock's life.

Further, as shown in fig. 1 to 2, one end of the sleeve 400 is disposed inside the body 100, and the other end extends to the outside of the body 100. In this embodiment, the one end setting of axle sleeve 400 is in main part 100, and the other end extends to the main part 100 outside, has prolonged the length of axle sleeve 400, has optimized the guidance quality of axle sleeve 400, makes axle sleeve 400's guidance quality better, can effectual elimination or the noise that reduces as far as possible, and avoids movable iron core 200 and main part 100 to bump, can prolong the life of electromagnetic lock.

Further, as shown in fig. 1 to 2, the movable core 200 includes a guide shaft 220, a connection shaft 230, and a compression spring 240. The coupling shaft 230 passes through the bushing 400, and the guide shaft 220 passes through the guide bushing 111 and is threadedly coupled with the coupling shaft 230. One end of the guide sleeve 111 close to the connecting shaft 230 is provided with a tapered hole 112, one end of the connecting shaft 230 extending into the hollow tube 110 is in a tapered structure and is used for being matched with the tapered hole 112, and the compression spring 240 is limited between the guide sleeve 111 and the connecting shaft 230. In this embodiment, the guide shaft 220 is screwed with the connection shaft 230 to guide the guide sleeve 111 and the connection shaft 230 to be always aligned. One end of the guide sleeve 111 close to the connecting shaft 230 is provided with a taper hole 112, and one end of the connecting shaft 230 extending into the hollow tube 110 is in a tapered structure and is matched with the taper hole 112, so that the movement stability of the connecting shaft 230 is further improved. The compression spring 240 is limited between the guide sleeve 111 and the connecting shaft 230, the compression spring 240 plays a role in resetting, after the electromagnetic coil 300 drives the connecting shaft 230 to retract into the main body 100, the electromagnetic coil 300 is powered off, the connecting shaft 230 resets under the action of the compression spring 240, the electromagnetic coil 300 does not need to be electrically connected in the reverse direction again, mechanical resetting is achieved, the structure is simpler, and operation is simpler and more convenient.

Further, as shown in fig. 1 to 2, the portable terminal device further includes a housing 500, the main body 100 is disposed in the housing 500, a connection sleeve 510 extending outward is integrally formed at one end of the housing 500, and the shaft sleeve 400 is positioned in the connection sleeve 510. In this embodiment, still include shell 500, main part 100 sets up in shell 500, and shell 500 plays the guard action to main part 100, prolongs the utility model provides an electromagnetic lock's life.

Further, as shown in fig. 1 to 2, one end of the shaft sleeve 400 close to the main body 100 is provided with a fixing portion 410 limited inside the housing 500. In this embodiment, a fixing portion 410 limited inside the outer casing 500 is disposed at one end of the shaft sleeve 400 close to the main body 100, and the fixing portion 410 fixes the shaft sleeve 400 at the inner casing, so as to prevent the shaft sleeve 400 from deviating and affecting the guidance of the shaft sleeve 400.

Further, referring to fig. 1 to 2, a limiting ring 250 is further disposed on the movable iron core 200, and a buffer washer 251 limited on one side of the limiting ring 250 is further sleeved on the movable iron core 200. In this embodiment, still the cover is equipped with spacing buffering packing ring 251 in spacing ring 250 one side on the activity iron core 200, and buffering packing ring 251 plays the cushioning effect, avoids activity iron core 200 when the activity, with axle sleeve 400 direct impact, influences the utility model provides a life of electromagnetic lock.

Further, referring to fig. 1 to 2, the sleeve 400 is integrally molded with resin. In this embodiment, axle sleeve 400 is resin integrated into one piece, and axle sleeve 400 adopts non-metallic material, has avoided movable iron core 200's wearing and tearing, extension the utility model provides an electromagnetic lock's life.

The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims

1. An electromagnetic lock, characterized by: comprises a main body, a movable iron core, an electromagnetic coil and a shaft sleeve; the main body comprises a hollow pipe and limiting plates arranged at two ends of the hollow pipe; the electromagnetic coil is wound on the outer side wall of the hollow pipe and is limited between the two limiting plates; one end of the hollow pipe is provided with a guide sleeve, and the shaft sleeve is arranged at the other end of the hollow pipe; the movable iron core passes through the guide sleeve and the shaft sleeve in a sliding manner; the movable iron core is provided with a limiting part which is limited between the guide sleeve and the shaft sleeve.

2. An electromagnetic lock according to claim 1, wherein: one end of the shaft sleeve is arranged in the main body, and the other end of the shaft sleeve extends to the outer side of the main body.

3. An electromagnetic lock according to claim 1, wherein: the movable iron core comprises a guide shaft, a connecting shaft and a compression spring; the connecting shaft penetrates through the shaft sleeve, and the guide shaft penetrates through the guide sleeve and is in threaded connection with the connecting shaft; the one end that the uide bushing is close to the connecting axle is provided with the taper hole, the connecting axle stretches into the one end of hollow tube is the toper structure, be used for with the taper hole cooperation, compression spring is spacing the uide bushing with between the connecting axle.

4. An electromagnetic lock according to claim 1, wherein: the novel electric heating cooker also comprises a shell, wherein the main body is arranged in the shell, a connecting sleeve extending outwards is integrally formed at one end of the shell, and the shaft sleeve is positioned in the connecting sleeve.

5. An electromagnetic lock according to claim 4, wherein: one end of the shaft sleeve, which is close to the main body, is provided with a fixing part which is limited on the inner side of the shell.

6. An electromagnetic lock according to claim 1, wherein: the movable iron core is further provided with a limiting ring, and the movable iron core is further sleeved with a buffer gasket limited to one side of the limiting ring.

7. An electromagnetic lock according to any one of claims 1 to 6, wherein: the shaft sleeve is integrally formed by resin.