Permanent magnet pendulum of magnetic latching relay

Abstract

The utility model discloses a permanent magnet pendulum of a magnetic latching relay, which is characterized in that the permanent magnet pendulum comprises two iron sheets, a permanent magnet and a shell, the shell is provided with two observation grooves which are symmetrically arranged and located at the corner of the shell, and the two observation grooves are internally provided with angle beads which shield the edges of the permanent magnet. And the observation groove is divided into two parts by the two angle beads, so that the problem that the permanent magnet is easy to damage in the prior art is solved.

Description

Technical Field

[0001] The utility model relates to the field of components of magnetic latching relays, and more specifically to a permanent magnet pendulum of a magnetic latching relay. Background Art

[0002] A magnetic latching relay is an automatic switch that plays the role of automatically connecting and disconnecting a circuit. The normally closed or normally open state of the magnetic latching relay completely depends on the action of a permanent magnet. The conversion of its switch state is completed by triggering with a pulse electrical signal of a certain width. The permanent magnet pendulum of the magnetic latching relay is a permanent magnet, generally in the shape of a "work" character, and is composed of two iron sheets, a permanent magnet, and a housing made of plastic. The two iron sheets penetrate through the housing in parallel, and both sides of the iron sheets are exposed outside the housing. The permanent magnet is arranged between the two iron sheets and is wrapped inside the housing. At present, when producing the permanent magnet pendulum, two iron sheets and a permanent magnet are manually placed into a mold, and then injection molding is carried out into the mold. There is a prior art application number "CN2020214935528" for a permanent magnet pendulum of a magnetic latching relay and its mold, which discloses that an observation groove is opened at the corner of the housing, and the observation groove is in an L shape, so that it is possible to observe whether the permanent magnet is installed in the housing, but there are still defects. Because the edges of the permanent magnet are exposed, it is easy to be bumped during handling, injection molding or use, resulting in magnetic fragmentation, greatly reducing the service life and functionality of the product. Summary of the Utility Model

[0003] Aiming at the deficiencies of the prior art, the purpose of the utility model is to provide a permanent magnet pendulum with stable structure and convenient use.

[0004] To achieve the above purpose, the utility model provides the following technical solution: A permanent magnet pendulum of a magnetic latching relay, comprising two iron sheets, a permanent magnet, and a housing. Two observation grooves are symmetrically arranged at the corners of the housing, and protective corners that block the edges of the permanent magnet are arranged in both of the two observation grooves. Both of the two protective corners divide the corresponding observation groove into two parts.

[0005] As a further improvement of the utility model, two auxiliary holes for partial penetration of the mold are opened on both side walls of the housing parallel to the iron sheets.

[0006] As a further improvement of the utility model, the two auxiliary holes on the same side wall of the housing are arranged diagonally.

[0007] Advantages of the present utility model: Angle protectors for shielding the edges of the permanent magnet are provided in the two observation slots. Such a design can avoid the phenomenon that the edges of the permanent magnet are knocked compared with the prior art where the two edges of the permanent magnet are exposed. The angle protectors are used to resist external impacts and knocks, effectively ensuring the structural stability of the permanent magnet, facilitating the normal use of the permanent magnet, and extending the service life of the permanent magnet. At the same time, the two angle protectors can improve the structural strength at the corners of the housing, thereby ensuring the structural stability of the housing. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Figure 1 is a perspective view of the present utility model;

[0009] Figure 2 is a perspective view of another angle of the present utility model.

[0010] Reference numerals: 1, iron sheet; 2, permanent magnet; 3, housing; 4, observation slot; 5, angle protector; 6, auxiliary hole. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0011] The present utility model will be further described in detail below in conjunction with the drawings and embodiments. The same components are denoted by the same reference numerals.

[0012] Referring to Figure 1 and Figure 2 as shown, a permanent magnet pendulum of a magnetic latching relay according to this embodiment includes two iron sheets 1, a permanent magnet 2, and a housing 3. Two observation slots 4 which are symmetrically arranged and located at the corners of the housing 3 are formed on the housing 3;

[0013] Based on the aforementioned prior art, angle protectors 5 extending along the width direction of the observation slot 4 are integrally formed in both of the two observation slots 4. The two angle protectors 5 divide the L-shaped observation slot 4 where they are located into two independent observation holes respectively. The two angle protectors 5 respectively shield the two edges of the permanent magnet 2;

[0014] Such a design can avoid the phenomenon that the edges of the permanent magnet 2 are knocked compared with the prior art where the two edges of the permanent magnet 2 are exposed. The angle protectors 5 are used to resist external impacts and knocks, effectively ensuring the structural stability of the permanent magnet 2, facilitating the normal use of the permanent magnet 2, and extending the service life of the permanent magnet 2. At the same time, the two angle protectors 5 can improve the structural strength at the corners of the housing 3, thereby ensuring the structural stability of the housing 3.

[0015] As a specific improvement embodiment, during the injection molding process, there is a phenomenon that the iron sheet 1 is bent and deformed due to heat or the pushing of the injection liquid, resulting in the shortening of the length of the end of the iron sheet 1 extending out of the housing 3 and affecting the use. To solve the aforementioned problem, referring to Figure 1 and Figure 2As shown, two auxiliary holes 6 for partial penetration of the mold are provided on the two side walls of the shell 3 parallel to the iron sheet 1. During the injection molding process, the push rod part of the corresponding mold is used to support the iron sheet 1 to prevent the iron sheet 1 from bending, thereby ensuring the structural stability of the iron sheet 1 and obtaining a compact and qualified product.

[0016] As a specific implementation method of the improvement, refer to Figure 1 and Figure 2 As shown, the two auxiliary holes 6 on the same side wall of the shell 3 are diagonally arranged, that is, the two auxiliary holes 6 on the same side wall are respectively located at the two end points on the same diagonal line of a rectangle. Compared with the design in which the two auxiliary holes 6 on the same side wall are arranged on the same side length of the rectangle, such a design can make the position of the force on the iron sheet 1 more reasonable and the force on the iron sheet 1 is uniform.

[0017] The above is only a preferred embodiment of the present invention. The protection scope of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention belong to the protection scope of the present invention. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.

Claims

1. A permanent magnetic pendulum of a magnetic latching relay, comprising two iron sheets (1), a permanent magnet (2) and a housing (3), wherein the housing (3) is provided with two symmetrically arranged observation slots (4) located at the corners of the housing (3), characterized in that: Corner guards (5) that shield the edges of the permanent magnet (2) are provided in the two observation slots (4), and the two corner guards (5) divide the observation slot (4) into two parts.

2. The permanent magnetic pendulum of a magnetic latching relay according to claim 1, characterized in that: Two auxiliary holes (6) for partial insertion of the mold are provided on two side walls of the housing (3) parallel to the iron sheet (1).

3. The permanent magnetic pendulum of a magnetic latching relay according to claim 2, characterized in that: The two auxiliary holes (6) located on the same side wall of the shell (3) are arranged diagonally.

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