CN213573442U

CN213573442U - Electromagnetic lock

Info

Publication number: CN213573442U
Application number: CN202021463009.3U
Authority: CN
Inventors: 费晓明
Original assignee: Hangzhou Youdian Technology Co ltd
Current assignee: Hangzhou Youdian Technology Co ltd
Priority date: 2020-07-22
Filing date: 2020-07-22
Publication date: 2021-06-29
Anticipated expiration: 2030-07-22

Abstract

The utility model discloses an electromagnetic lock, which comprises a main body piece, an iron core, a coil, a cover plate and a spring; the main body piece comprises a rear wall, a first side wall and a second side wall, wherein the first side wall and the second side wall are bent and extended from two sides of the rear wall; the rear wall is provided with a first through hole; the iron core penetrates through the coil and comprises a fixed core body, a movable core body and a limiting piece which can be integrally connected with the movable core body; the cover plate is provided with a third through hole, the movable core body penetrates through the third through hole, and the electromagnetic lock is further provided with a movable baffle; the first side wall extends from the upper end edge and the lower end edge to form an installation part, and the installation part is provided with an installation hole. Therefore, when a plurality of electromagnetic locks are mounted in a stacked manner, the mounting portion facilitates layout and mounting of the plurality of electromagnetic locks.

Description

Electromagnetic lock

Technical Field

The utility model relates to an electromagnetic lock field especially relates to an electromagnetic lock of simple design.

Background

An electromagnetic lock is an electrically controlled lock. The prior art electromagnetic lock generally includes a main body, an iron core, a coil, a cover plate and a spring. The main body piece comprises a rear wall, and a first side wall and a second side wall which are bent and extended from two sides of the rear wall. The main body piece is approximately shaped like Contraband in a top view. The iron core penetrates through the coil and comprises a fixed core body, a movable core body and a limiting part which can be integrally connected with the movable core body. The front half part of the movable core body is provided with a buckle groove used for being in buckle fit with a buckle piece and further matching with a cover plate to realize a limiting spring. When the electromagnetic lock is electrified, the movable core retracts; when the electromagnetic lock is powered off, the movable core body is driven by the spring to extend. However, in practical use, the electromagnetic lock is often subjected to retraction under the condition of power failure due to external force, so that the locking is disabled.

Therefore, there is a need for a new electromagnetic lock.

SUMMERY OF THE UTILITY MODEL

The main object of the utility model is to provide an electromagnetic lock of simple design.

In order to achieve the above object, the present invention provides:

an electromagnetic lock comprises a main body piece, an iron core, a coil, a cover plate and a spring; the main body piece comprises a rear wall, a first side wall and a second side wall, wherein the first side wall and the second side wall are bent and extended from two sides of the rear wall; the rear wall is provided with a first through hole; the iron core penetrates through the coil and comprises a fixed core body, a movable core body and a limiting piece which can be integrally connected with the movable core body; the cover plate is provided with a third through hole, the movable core body penetrates through the third through hole, and the electromagnetic lock is further provided with a movable baffle; the first side wall extends from the upper end edge and the lower end edge to form an installation part, and the installation part is provided with an installation hole.

In another preferred embodiment, the movable baffle includes a main body, a first side arm and a second side arm bent forward from two side edges of the main body, and a weight leg bent from a lower end edge of the main body; the first side arm is located on the right side of the first side wall, and the second side arm is located on the left side of the second side wall.

In another preferred embodiment, the distance between the first side arm and the second side arm is greater than the distance between the first side wall and the second side wall.

In another preferred embodiment, the spacing between the first side arm and the second side arm is greater than the width of the rear wall.

In another preferred embodiment, the first side wall and the second side wall are provided with a limit bump opposite to the first side arm and the second side arm, and the limit bump is formed by stamping.

In another preferred embodiment, a first fastening portion is disposed in a middle of a front end edge of the first side wall and a front end edge of the second side wall, a second fastening portion is disposed on the cover plate opposite to the first fastening portion, and the first fastening portion and the second fastening portion are fastened and matched.

In another preferred embodiment, the movable core further comprises a magnet, the front end of the movable core is provided with a mounting groove, and the magnet is mounted in the mounting groove.

In another preferred embodiment, the fixed core is disposed through the first through hole and has a second through hole; the rear end of the movable core body is provided with an internal thread; the limiting piece is provided with an external thread; the limiting piece penetrates through the first through hole and the second through hole to be connected with the movable core body in a rotating mode.

In another preferred embodiment, the front half of the movable core is provided with a snap groove for snap-fitting with a snap member.

In another preferred embodiment, the rear end edges of the first side wall and the second side wall are provided with pivot holes extending backward, the two side arms are provided with pivot shafts corresponding to the pivot holes, the two side arms are bent in opposite directions to form the pivot shafts, and the pivot holes are in pivot fit with the pivot shafts.

The utility model has the advantages that: because first lateral wall forms the installation department from the upper and lower edge extension, the installation department is equipped with the mounting hole. Therefore, when a plurality of electromagnetic locks are mounted in a stacked manner, the mounting portion facilitates layout and mounting of the plurality of electromagnetic locks.

Drawings

In order to illustrate the embodiments of the present invention or the technical solutions in the prior art more clearly, the drawings used in the description of the embodiments or the prior art will be briefly described below, and obviously, the drawings in the following description are some embodiments of the present invention.

Fig. 1 is a perspective view of an electromagnetic lock according to an embodiment of the present invention;

fig. 2 is a perspective view of a main body portion of an electromagnetic lock according to an embodiment of the present invention;

fig. 3 is an enlarged combined perspective view of the diaphragm pump and the conduction member of the electromagnetic lock according to the embodiment of the present invention.

Detailed Description

It should be noted that, in the present invention, the embodiments and features of the embodiments may be combined with each other without conflict. The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the description of the present invention, it is to be understood that the terms "comprises" and "comprising," and any variations thereof, as used herein, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

As shown in fig. 1 to 3, an electromagnetic lock 100 according to an embodiment of the present invention may include a main body 1, an iron core 2, a coil 3, a cover plate 4, and a spring 5.

The main body member 1 may include a rear wall 11 and a first side wall 12 and a second side wall 13 bent and extended from both sides of the rear wall 11. The main body member 1 is substantially shaped like "Contraband" in a plan view. The middle part of the back wall 11 is provided with a first through hole. The first sidewall 12 extends from the upper and lower edges to form a mounting portion 121, and the mounting portion 121 is provided with a mounting hole 120 for mounting and fixing the electromagnetic lock 100. The middle parts of the front end edges of the first side wall 12 and the second side wall 13 are provided with first clamping parts.

The iron core 2 penetrates the coil 3 and may include a fixed core 21, a movable core 22, and a stopper 23 that may be integrally connected to the movable core 22. The fixed core 21 may be disposed through the first through hole and may have a second through hole. The movable core 22 has a magnet at its front end. In this embodiment, the front end of the movable core 22 is provided with a mounting groove, and the magnet is mounted in the mounting groove. The movable core 22 has an internal thread at its rear end. The limiting member 23 is provided with an external thread. The limiting member 23 can pass through the first through hole and the second through hole to be rotatably connected with the movable core 22, so that the limiting member 23 and the movable core 22 are fixedly matched. The front half part of the movable core 22 is provided with a snap groove for snap fitting with the snap member 6, further fitting with the cover plate 4 to realize the limit spring 5.

The cover plate 4 is substantially square and is provided with a third through hole in the middle. The movable core 22 penetrates the third through hole to perform a locking action. The cover plate 4 is provided with a second engaging portion opposite to the first engaging portion. The first clamping part and the second clamping part are clamped and matched to fix the main body piece 1 and the cover plate 4.

The electromagnetic lock 100 is also provided with a flapper 7. The flapper 7 includes a main body 71, a first side arm 721 and a second side arm 722 bent forward from two side edges of the main body 71, and a weight leg 73 bent from a lower end edge of the main body 71. The middle of the rear end edge of the first side wall 12 and the second side wall 13 is provided with a pivot hole extending backwards, and the two

side arms

721 and 722 are provided with pivot shafts corresponding to the pivot hole. In this embodiment, the two

side arms

721, 722 are bent toward each other to form a pivot shaft. The pivot hole is in pivot fit with the pivot shaft to realize the rotation of the movable baffle 7 relative to the main body 1. When the movable baffle 7 rotates to different positions, the body portion 71 can selectively block or not block the limiting member 23. The first side arm 721, the second side arm 722 and the weight foot 73 are designed by adjusting to meet the following objectives: when the main body 71 is parallel to the horizontal plane and the cover plate 4 is perpendicular to the horizontal plane, the main body 71 does not block the stopper 23; when the body portion 71 is parallel to the horizontal plane and the cover plate 4 is not perpendicular to the horizontal plane, the body portion 71 does not block the limiting member 23; in other embodiments, when the main body 71 is parallel to the horizontal plane and the cover plate 4 forms an included angle with the horizontal plane, the included angle is smaller than a predetermined angle (the predetermined angle is smaller than 90 °), the main body 71 does not block the position-limiting member 23. The first side arm 721 is located on the right side of the first side wall 12; the second side arm 722 is located to the left of the second side wall 13; that is, the interval between the first side arm 721 and the second side arm 722 is larger than the interval between the first side wall 12 and the second side wall 13; i.e. the spacing between the first 721 and second 722 side arms is greater than the width of the rear wall 11. The first and

second side walls

12 and 13 are provided with a limit projection with respect to the first and

second side arms

721 and 722 for limiting the maximum angle of rotation of the flapper 7 with respect to the main body member 1. The limit projection may be formed by stamping. Since the first side arm 721 is located at the right side of the first side wall 12; the second side arm 722 is located to the left of the second side wall 13; the shape and length of the first side arm 721 and the second side arm 722 have a large design space, so that the counterweight foot 73 can meet the above requirements through adjustment design.

Since the first side wall 12 extends from the upper and lower end edges to form the mounting portion 121, the mounting portion 121 is provided with the mounting hole 120. Therefore, when a plurality of electromagnetic locks 100 are mounted in a stack, the mounting portion 121 facilitates layout and mounting of the plurality of electromagnetic locks 100.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.

Claims

1. An electromagnetic lock is characterized by comprising a main body piece, an iron core, a coil, a cover plate and a spring; the main body piece comprises a rear wall, a first side wall and a second side wall, wherein the first side wall and the second side wall are bent and extended from two sides of the rear wall; the rear wall is provided with a first through hole; the iron core penetrates through the coil and comprises a fixed core body, a movable core body and a limiting piece which can be integrally connected with the movable core body; the cover plate is provided with a third through hole, the movable core body penetrates through the third through hole, and the electromagnetic lock is further provided with a movable baffle; the first side wall extends from the upper end edge and the lower end edge to form a mounting part, and the mounting part is provided with a mounting hole;

the movable baffle comprises a body part, a first side arm and a second side arm which are formed by bending the two side edges of the body part forwards, and a counterweight pin formed by bending the lower end edge of the body part; the first side arm is positioned on the right side of the first side wall, and the second side arm is positioned on the left side of the second side wall;

the first side wall is provided with a limiting lug corresponding to the first side wall, the second side wall is provided with a limiting lug corresponding to the second side wall, and the limiting lug is formed through stamping.

2. An electromagnetic lock according to claim 1, wherein: the spacing between the first side arm and the second side arm is greater than the spacing between the first side wall and the second side wall.

3. An electromagnetic lock according to claim 1, wherein: the spacing between the first side arm and the second side arm is greater than the width of the rear wall.

4. An electromagnetic lock according to claim 1, wherein: the cover plate is provided with a first clamping portion relative to the first clamping portion, and the first clamping portion is in clamping fit with the second clamping portion.

5. An electromagnetic lock according to claim 1, wherein: the movable core body further comprises a magnet, wherein an installation groove is formed in the front end of the movable core body, and the magnet is installed in the installation groove.

6. An electromagnetic lock according to claim 1, wherein: the fixed core body penetrates through the first through hole and is provided with a second through hole; the rear end of the movable core body is provided with an internal thread; the limiting piece is provided with an external thread; the limiting piece penetrates through the first through hole and the second through hole to be connected with the movable core body in a rotating mode.

7. An electromagnetic lock according to claim 1, wherein: the front half part of the movable core body is provided with a buckle groove used for being in buckle fit with the buckle piece.

8. An electromagnetic lock according to claim 1, wherein: the rear end edges of the first side wall and the second side wall are provided with pin joint holes extending backwards, pin joint shafts are arranged on the first side arm and the second side arm corresponding to the pin joint holes, the first side arm and the second side arm are bent oppositely to form the pin joint shafts, and the pin joint holes are in pin joint fit with the pin joint shafts.