阅读说明：本技术 一种电磁继电器的磁路机构 (Magnetic circuit mechanism of electromagnetic relay ) 是由 余正海 于 2020-07-27 设计创作，主要内容包括：本发明公开了一种电磁继电器的磁路机构,属于继电器技术领域,包括线架、穿设于线架的铁芯、卷绕设于线架外周侧的线圈以及设于线架一侧的衔铁,所述线架具有与线圈配合的绕线部,所述绕线部于其长度方向上的一端固接有限位部,另一端固接有用于容置衔铁的安装部,且绕线部沿其长度方向贯穿限位部与安装部开设有与铁芯配合的铁芯孔,所述铁芯的一端穿至安装部并与衔铁相配合,所述绕线部的至少一侧贯穿开设有凹槽,本发明具有增强铁芯电磁吸力,降低线圈温升的优点。(The invention discloses a magnetic circuit mechanism of an electromagnetic relay, which belongs to the technical field of relays and comprises a wire frame, an iron core penetrating through the wire frame, a coil wound on the outer peripheral side of the wire frame and an armature arranged on one side of the wire frame, wherein the wire frame is provided with a wire winding part matched with the coil, one end of the wire winding part in the length direction is fixedly connected with a limiting part, the other end of the wire winding part is fixedly connected with an installation part for accommodating the armature, the wire winding part penetrates through the limiting part and the installation part along the length direction and is provided with an iron core hole matched with the iron core, one end of the iron core penetrates through the installation part and is matched with the armature, and at least one side of the wire winding part penetrates through and is provided with.)

1. A magnetic circuit mechanism of an electromagnetic relay is characterized in that: including line frame (1), wear to locate iron core (2), the coiling of line frame (1) and locate coil of line frame (1) periphery side and locate armature (3) of line frame one side, line frame (1) have with coil complex wire winding portion (11), wire winding portion (11) have spacing portion (12) in its ascending one end rigid coupling of length direction, and the other end rigid coupling has installation department (13) that are used for holding armature (3), and wire winding portion (11) run through spacing portion (12) and installation department (13) along its length direction and offer with iron core (2) complex iron core hole (14), the one end of iron core (2) is worn to installation department (13) and cooperatees with armature (3), at least one side of wire winding portion (11) is run through and is seted up fluted (15).

2. A magnetic circuit mechanism of an electromagnetic relay according to claim 1, characterized in that: the profile of the longitudinal section of the groove (15) is a closed graph which is formed by a plurality of straight line sections or curve sections which are sequentially connected end to end in a surrounding manner.

3. A magnetic circuit mechanism of an electromagnetic relay according to claim 2, characterized in that: the groove (15) is formed along the length direction of the winding part (11), and the profile of the longitudinal section of the groove is provided with two parallel long sides and two parallel short sides.

4. A magnetic circuit mechanism of an electromagnetic relay according to claim 1, characterized in that: the mounting part (13) comprises a fixing plate (131), a coil pin mounting seat (132) arranged below the iron core hole (14) and vertical plates (133) arranged on two sides of the coil pin mounting seat (132), wherein coil pins (134) which are square wires or round wires are arranged at two ends of the bottom of the coil pin mounting seat (132).

5. A magnetic circuit mechanism of an electromagnetic relay according to claim 1, characterized in that: at least one positioning rib (16) for fixing the iron core (2) is fixedly connected to the inner surface of the iron core hole (14) along the length direction of the iron core hole.

6. A magnetic circuit mechanism of an electromagnetic relay according to claim 1, characterized in that: and two ends of the inner surface of the iron core hole (14) are fixedly connected with at least one positioning rib (16) for fixing the iron core (2) along the inner peripheral side.

Technical Field

The invention relates to the technical field of relays, in particular to a magnetic circuit mechanism of an electromagnetic relay.

Background

The relay is a widely used electronic component, which is widely applied to the fields of household appliances, automobiles, industrial control, power systems, communication devices and the like, and the development of miniaturization and high power of the electromagnetic relay requires one of the development directions thereof.

The relay comprises a base, a shell clamped with the base, and a functional assembly accommodated in the shell and arranged on the base, wherein the functional assembly comprises a magnetic circuit mechanism and a contact system matched with the magnetic circuit mechanism, the magnetic circuit mechanism comprises a wire frame, a coil wound on the periphery of the wire frame, an iron core and an armature which penetrate through the wire frame, and the contact system comprises a movable contact device and a static contact device.

The small relay on the market at present can cause the problems of reduced contact pressure between a movable contact and a fixed contact, larger coil temperature rise and the like under the action of long-time work and external environment due to small volume.

Based on this, the present invention designs a magnetic circuit mechanism of an electromagnetic relay to solve the above problems.

Disclosure of Invention

The present invention is directed to a magnetic circuit mechanism of an electromagnetic relay to solve the above-mentioned problems.

In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides an electromagnetic relay's magnetic circuit mechanism, including the line frame, wear to locate the iron core of line frame, coil that the coiling was located line frame periphery side and the armature of locating line frame one side, the line frame have with coil complex wire winding portion, wire winding portion has spacing portion in its ascending one end rigid coupling of length direction, other end rigid coupling has the installation department that is used for holding armature, and wire winding portion run through spacing portion and installation department along its length direction and seted up with iron core complex iron core hole, the one end of iron core is worn to the installation department and is cooperateed with armature, at least one side of wire winding portion is run through and is seted up.

Preferably, the profile of the longitudinal section of the groove is a closed graph, and the closed graph is formed by sequentially connecting a plurality of straight line segments or curved line segments end to end in a surrounding manner.

Preferably, the groove is formed along the length direction of the winding portion, and the longitudinal section profile of the groove has two parallel long sides and two parallel short sides.

Preferably, the installation department includes the fixed plate, locates the coil foot mount pad of iron core hole below, locates the riser of coil foot mount pad both sides, and coil foot mount pad bottom both ends are equipped with the coil foot for square filament or round filament.

Preferably, at least one positioning rib for fixing the iron core is fixedly connected to the inner surface of the iron core hole along the length direction of the iron core hole.

Preferably, at least one positioning rib for fixing the iron core is fixedly connected to two ends of the inner surface of the iron core hole along the inner peripheral side.

Compared with the prior art, the invention has the beneficial effects that:

the invention has a groove through at least one side of the winding part of the coil holder, the profile of the longitudinal section of the groove is a closed graph, the closed graph is formed by sequentially connecting a plurality of straight line segments or curve segments end to end, under the working condition of the relay, the coil is electrified to generate a magnetic field, the magnetic flux which is originally uniformly distributed in the space can be gathered towards the iron core, and compared with the coil holder without the groove, the coil holder with the groove increases the number of turns of the coil which is wound on the outer periphery side of the length of the winding part on one hand, can improve the electromagnetic attraction, further increases the contact pressure between the moving contact and the static contact to improve the reliability of the joint of the moving contact and the static contact on the other hand, the groove provides a space for the side surface of the coil, is favorable for the heat dissipation of the coil.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments 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 that other drawings can be obtained according to the drawings without creative efforts.

Fig. 1 is an exploded view of a conventional subminiature relay;

FIG. 2 is a schematic structural view of a conventional bobbin, in which no groove is formed in the winding portion;

FIG. 3 is a schematic structural view of a protruding groove and a positioning rib according to the present embodiment;

FIG. 4 is a schematic structural diagram illustrating another positioning rib arrangement manner according to the present embodiment;

FIG. 5 is a schematic view of a second embodiment of a raised groove;

FIG. 6 is a schematic view of a three-prominence groove structure of the present embodiment.

In the drawings, the components represented by the respective reference numerals are listed below:

1. a wire frame; 11. a winding part; 12. a limiting part; 13. an installation part; 131. a fixing plate; 132. a coil pin mounting base; 133. a vertical plate; 134. a coil leg; 14. an iron core hole; 15. a groove; 16. positioning ribs; 2. an iron core; 3. an armature.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 3-4, in a first embodiment of the present invention: a magnetic circuit mechanism of an electromagnetic relay comprises a wire frame 1, an iron core 2 penetrating the wire frame 1, a coil wound on the outer periphery of the wire frame 1 and an armature 3 arranged on one side of the wire frame, wherein the iron core 2 is U-shaped and rectangular in cross section, the wire frame 1 is provided with a winding part 11 matched with the coil, the winding part 11 is rectangular, one end of the winding part 11 in the length direction is fixedly connected with a limiting part 12, the other end of the winding part is fixedly connected with an installation part 13 used for accommodating the armature 3, the winding part 11 penetrates through the limiting part 12 and the installation part 13 along the length direction and is provided with an iron core hole 14 matched with the iron core 2, the iron core hole 14 is a square hole, one end of the iron core 2 penetrates through the installation part 13 and is matched with the armature 3, the other end of the iron core bypasses the limiting part 12 and extends to the upper part of the winding part 11, one side of the iron core 2, in addition, a step for matching with the limiting portion 12 is disposed at the bottom of the U-shaped iron core 2 along the thickness direction thereof, and a groove 15 is formed through at least one side of the winding portion 11, in the first embodiment, the winding portion 11 is formed through the groove 15 only at one side in the width direction thereof.

As shown in fig. 3, the profile of the longitudinal section (i.e. the section obtained along the length and height direction of the groove) of the groove 15 is a closed figure, and the closed figure is formed by sequentially connecting a plurality of straight line sections or curved line sections end to end.

Furthermore, the groove 15 is formed along the length direction of the winding portion 11, the longitudinal section profile of the groove 15 is provided with two parallel long sides and two parallel short sides, specifically, the longitudinal section profile of the groove 15 is rectangular and is provided with one groove along the length direction of the winding portion 11, the higher the occupation ratio of the groove 15 relative to the side face of the winding portion 11 is, the larger the space is provided, the coil can perform bidirectional heat dissipation on the groove 15 face and the groove 15 opposite face, and the heat dissipation efficiency is improved; meanwhile, the space of the groove 15 increases the number of turns of the coil wound on the outer periphery of the length of the winding part 11, and the electromagnetic attraction of the iron core 2 can be enhanced.

As shown in fig. 3, the mounting portion 13 includes a fixing plate 131, a coil pin mounting seat 132 disposed below the core hole 14, and vertical plates 133 disposed on two sides of the coil pin mounting seat 132, wherein coil pins 134 of a square wire or a round wire are disposed at two ends of the bottom of the coil pin mounting seat 132 (the cross section of the square wire, i.e., the coil pin 134, is square, and the cross section of the round wire, i.e., the coil pin, is circular), the coil pins 134 are inserted into the coil pin mounting seat 132 and connected to two ends of the coil, the mounting portion 13 can be fixedly connected to a base of the relay, and a space for accommodating the armature 3 and matching the core 2 is disposed on the other hand.

Specifically, the positioning ribs 16 are arranged in two ways:

as shown in fig. 3, a positioning rib 16 is provided: the internal surface of iron core hole 14 has a location muscle 16 that is used for fixed iron core 2 along its at least rigid coupling of length direction, and further, location muscle 16 can be for diagonal angle setting or homonymy setting, and 14 internal surface four corners in iron core hole in this implementation one all are fixed with location muscle 16 along its length direction, and location muscle 16 carries out the location of four positions of circumference to iron core 2 along the length direction of wire winding portion 11, and increase location muscle 16 and iron core 2's area of contact can play the effect of effectively fixing iron core 2.

As shown in fig. 4, another arrangement of the positioning rib 16 is as follows: two ends of the inner surface of the iron core hole 14 are fixedly connected with at least one positioning rib 16 for fixing the iron core 2 along the inner peripheral side, further, the positioning ribs 16 can be arranged diagonally or arranged at the same side, the positioning ribs 16 are fixed at four corners of the inner peripheral side of the inner surface of the iron core hole 14 in the first embodiment, and the iron core 2 can be positioned at four circumferential positions at two ends of the winding part 11, so that the iron core 2 can be effectively fixed under the condition of saving the production cost.

Referring to fig. 5, a second embodiment of the invention: the difference between the second embodiment and the first embodiment is that: the winding portion 11 has a groove 15 formed only on the other side in the width direction, and the specific effect is as in the first embodiment.

Referring to fig. 6, a third embodiment of the invention: the difference between the third embodiment and the first embodiment is that: winding portion 11 all runs through in its width direction's both sides and has seted up recess 15, and the setting of double flute 15 compares in single recess 15's design, provides more sufficient space for the coil in winding portion 11 both sides, under the prerequisite of having guaranteed 1 overall structure stability of line frame, has improved the effect that reduces the temperature rise on the one hand, and on the other hand has further strengthened the electromagnetic attraction of iron core 2 in order to increase the joint pressure between the sound contact.

One specific application of this embodiment is:

the invention has a groove 15 through at least one side of the winding part 11 of the coil holder 1, the longitudinal section outline of the groove 15 is a closed figure, the closed figure is formed by connecting a plurality of straight line segments or curve segments end to end in sequence, under the working condition of the relay, the coil is electrified to generate a magnetic field, because the magnetic resistance of the iron core 2 is relatively low to the air, the magnetic flux which is originally uniformly distributed in the space can be gathered to the iron core 2, compared with the coil holder 1 without the groove 15, the number of winding turns of the coil holder 1 with the groove 15 can be increased, on one hand, the electromagnetic attraction can be improved, the joint pressure of the moving contact and the static contact can be increased, so as to improve the joint reliability of the moving contact and the static contact, on the other hand, the space is arranged on the.

In conclusion, the groove 15 is formed in the coil holder, so that the electromagnetic attraction of the iron core 2 is enhanced, and the temperature rise of the coil is reduced.

In the description of the present invention, it is to be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "other end", "upper", "one side", "top", "inner", "front", "center", "both ends", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.

In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "disposed," "connected," "secured," "screwed" and the like are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; the terms may be directly connected or indirectly connected through an intermediate, and may be communication between two elements or interaction relationship between two elements, unless otherwise specifically limited, and the specific meaning of the terms in the present invention will be understood by those skilled in the art according to specific situations.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.