CN210325648U

CN210325648U - Inverted miniature relay

Info

Publication number: CN210325648U
Application number: CN201921307305.1U
Authority: CN
Inventors: 吕江; 徐勇
Original assignee: Sichuan Hongfa Electroacoustic Co ltd
Current assignee: Sichuan Hongfa Electroacoustic Co ltd
Priority date: 2019-08-13
Filing date: 2019-08-13
Publication date: 2020-04-14
Anticipated expiration: 2029-08-13

Abstract

The utility model discloses a small-size relay of flip-chip formula, including coil former, iron core, yoke, movable spring subassembly and quiet spring subassembly, be equipped with the coil on the coil former, movable spring subassembly and quiet spring subassembly assemble respectively the bottom of coil former and make movable spring contact and quiet spring contact correspond the cooperation, the iron core can extend with both ends the mode axial assembly that the coil former corresponds the tip is in the coil former, the bottom of iron core is connected with the movable reed that moves the spring subassembly, the bottom assembly of yoke is in coil former bottom, top extend to the top of coil former top, just the top of yoke is in the top of iron core, in order to constitute iron core is at the ascending activity space of axial. The utility model has the characteristics of simple structure, low in manufacturing cost, stable performance, long service life, etc.

Description

Inverted miniature relay

Technical Field

The utility model relates to a relay specifically is a miniature relay of flip-chip, "cubic sugar" type.

Background

The 'cube sugar' type relay has the characteristics of simple structure, compact structure, small volume, low power and the like, and is generally applied to the power supply control of household electrical equipment.

A typical "brown sugar" type relay is shown in fig. 1, and is mainly composed of a bobbin a and a coil b fitted on the bobbin a, an iron core fitted in the bobbin a, a yoke d fitted on the bobbin a, a stationary spring assembly c fitted on the bobbin a, a movable spring assembly e fitted on the bobbin a, an armature f fitted on the yoke d via the movable spring assembly e, and the like. In the relay structure, a movable spring assembly (mainly, a movable spring) extends to the top of a coil frame through a yoke and an armature, and the movable spring assembly plays a basic function of matching with a static spring assembly and also plays a function of assembling and connecting the armature and the yoke; the stationary spring assembly extends from the bottom of the bobbin through the coil window to the top of the bobbin to mate with the moving spring assembly.

The above-mentioned typical "cube sugar" type relay mainly has the following technical problems, which make it poor in economy, stability and reliability:

1. the movable spring assembly and the static spring assembly respectively span a half magnetic circuit to enable the path to be longer, on one hand, the material consumption is increased during manufacturing to increase the manufacturing cost, and on the other hand, the conductive distance is long, the internal resistance is large, and the technical requirement of large load is difficult to meet;

2. the static spring assembly passes through the coil window from the bottom of the coil rack and extends to the top of the coil rack, and the creepage distance between the static spring assembly and the coil is low, so that the electric shock phenomenon is easy to occur in use, and the safety performance is low;

3. the armature is assembled on the knife edge of the yoke through the elastic pressure of the movable spring assembly, once the movable spring of the movable spring assembly is fatigued and the elastic force is slightly damaged, the elastic pressure assembled between the armature and the yoke is insufficient, the matching structure of the armature on the yoke cannot be stably maintained, the armature is easy to shift, and further the abnormal work or the early failure of the relay can be caused.

The technical problems of the typical "cube sugar" type relay mentioned above have been the direction of active research in the industry to solve them. However, research in the industry is mainly focused on how to shorten the path of the movable spring assembly and the static spring assembly on the coil frame, for example, "a low-cost and high-load small relay" (publication No. CN206388653, published 2017, 8.8.7) disclosed in chinese patent literature, which is a technology that the iron core in the coil frame is flipped over, and the pole face of the iron core faces the bottom of the coil frame, so that the armature, the movable spring assembly, the static spring assembly, and the like are assembled at the bottom of the coil frame, so that the contact of the movable spring assembly and the contact of the static spring assembly are matched at the bottom of the coil frame, and the path of the movable spring assembly and the static spring assembly is shortened, so that the material consumption is reduced, so that the manufacturing cost is reduced, and the conductive distance is shortened, so that the internal resistance is reduced, thereby meeting the technical requirements of large load. Although the technology reduces the manufacturing cost and meets the technical requirement of heavy load by a specific inverted structure, the armature is still assembled on the knife edge of the yoke by the elastic pressure of the movable spring component, so that the technical problem of point 3 of the typical square sugar-shaped relay still exists, namely once the movable spring of the movable spring component is fatigued and the elastic force is slightly damaged, the elastic pressure assembled between the armature and the yoke is insufficient, the matching structure of the armature on the yoke cannot be stably maintained, the armature is easy to shift, the abnormal operation or early failure of the relay is further caused, and the service life is short.

SUMMERY OF THE UTILITY MODEL

The technical purpose of the utility model is that: aiming at the particularity of the 'cube sugar' type relay and the defects of the prior art, the inverted small relay with simple structure, low manufacturing cost, stable performance and long service life is provided.

The technical purpose of the utility model is realized through the following technical scheme: the utility model provides a flip-chip type miniature relay, includes coil former, iron core, yoke, movable spring subassembly and quiet spring subassembly, be equipped with the coil on the coil former, movable spring subassembly and quiet spring subassembly assemble respectively in the bottom of coil former and make movable spring contact and quiet spring contact correspond the cooperation, the iron core with both ends can extend the mode axial assembly that the coil former corresponds the tip in the coil former, the bottom of iron core is connected with movable spring of movable spring subassembly, the bottom assembly of yoke is in coil former bottom, top extend to the top of coil former, and the top of yoke is in the top of iron core top, in order to constitute the iron core is at the ascending activity space of axial.

As one preferable scheme, the top inner side surface of the yoke iron is of a plane structure; correspondingly, the top end of the iron core is also of a plane structure.

Preferably, the yoke has a C-shaped structure.

Preferably, the top end of the iron core is provided with a head part with an outer diameter larger than the diameter of the iron core assembling hole on the coil rack, the whole iron core is in a T-shaped structure, the head part on the iron core is positioned at the top end of the coil rack, and the top surface of the head part of the iron core is in a plane structure.

Preferably, the bottom of the coil frame is provided with an insertion groove for assembling the yoke, the insertion groove extends from the side surface of the bottom of the coil frame to the iron core assembly hole and is of a straight groove structure, the bottom of the yoke is of a straight bar structure matched with the insertion groove, and the bottom of the yoke is assembled at the bottom of the coil frame through the insertion groove. Furthermore, the front end of the bottom of the yoke iron is provided with an insertion opening corresponding to the peripheral outline of the iron core. Still further, the insertion opening at the front end of the bottom of the yoke is of a U-shaped structure or a circular structure. Furthermore, the insertion opening at the front end of the bottom of the yoke is of a U-shaped structure.

Preferably, three reinforcing ribs protruding upwards are arranged on the periphery of the iron core assembling hole at the top of the coil frame, the three reinforcing ribs surround a space with a contour larger than the radial contour of the iron core at the top of the coil frame, a top inserting type groove of the yoke is formed at the top of the space surrounded by the top of the coil frame by the three reinforcing ribs, and the top of the yoke is assembled at the top of the coil frame through the inserting type groove surrounded by the three reinforcing ribs at the top of the coil frame.

As one of the preferable schemes, the movable reed of the movable spring assembly is sequentially provided with fixing holes, iron core assembling holes and contact holes at intervals, the movable reed is assembled at the bottom of the coil frame through the fixing holes, the movable reed is assembled and connected with the bottom end of the iron core through the iron core assembling holes, the contact holes are used for assembling movable spring contacts, the movable reed in the area where the fixing holes are located and the bottom surface of the coil frame form surface contact fit, and the movable reed in the area where the iron core assembling holes and the contact holes are located and the bottom surface of the coil frame keep movable clearance fit. Furthermore, the area between the fixing hole of the movable spring plate and the iron core assembling hole is provided with a turning step, and the turning step divides the movable spring plate into a matching area in surface contact with the bottom surface of the coil frame and a matching area for keeping a movable clearance. Still further, the turning step on the movable spring is of an inclined plane structure, and an included angle between the turning step and the movable spring extension surface of the area where the fixing hole is located is 30-60 degrees, preferably 40-50 degrees.

Preferably, an elastic deformation hole with a C-shaped structure is formed in the movable spring plate on the periphery of the iron core assembly hole, and the elastic deformation hole is formed in the movable spring plate between the iron core assembly hole and the contact hole. Furthermore, the elastic deformation hole on the movable spring plate is close to the iron core assembling hole on the movable spring plate, and the profile line of the elastic deformation hole corresponds to the profile line of the iron core assembling hole.

The utility model has the beneficial technical effects that:

1. the utility model discloses to the particularity of "cubic sugar" type relay, with the coil former of bottom flip-chip movable spring subassembly and quiet spring subassembly as the basis, with the iron core with the mobilizable mode assembly of axial in the coil former, and with movable spring subassembly assembled connection, the yoke constitutes the iron core at the top of coil former in the ascending activity space of axial, and forms working air gap with the iron core, the axial displacement of iron core in the activity space can drive the movable spring subassembly and the quiet spring subassembly realization cooperation of coil former bottom, the utility model discloses both have flip-chip relay possess technical advantage-reduced the movable spring subassembly and the route of quiet spring subassembly promptly, in order to reduce the material consumption, with this reduction manufacturing cost, and reduced the thermal resistance, let the heat change and shed, thereby satisfied the technical requirement of heavy load; the armature is removed due to the matching structure of the yoke and the iron core, the design structure of the relay is effectively simplified by the removal of the armature, the manufacturing cost is reduced, meanwhile, the iron core with axial movement is limited in the designed working position range by the iron core hole on the coil frame and the yoke, the technical problem caused by poor stability of the assembly structure between the yoke and the armature in the prior art is avoided, and the anti-falling performance of the relay is obviously improved, so that the utility model has stable performance, long service life, economy and reliability in use, and the space around the coil window is emptied;

2. the structure at the top of the yoke of the utility model can be stably matched with the top end of the iron core, thereby ensuring the stability and reliability of the axial displacement of the iron core, preventing the technical problems of local abrasion, blocking and the like caused by radial deviation in the axial displacement process of the iron core, particularly being more obvious under the matching that the iron core adopts a T-shaped structure and the top surface of the head is a plane structure, and the stable matching of the yoke and the iron core ensures that the utility model has stable performance, high reliability and long service life in use;

3. the utility model discloses cartridge groove structure, and yoke bottom structure of coil former bottom can effectively ensure that the yoke is stable on the coil former, efficient installation shaping, the shaping is firm, especially suitable automated production process, this especially is more obvious in the cooperation of the cartridge mouth that adopts U type structure at yoke bottom front end, in addition, the U type structure cartridge mouth of yoke bottom front end has both ensured that yoke and coil former inner core form stable assembly, can ensure again that the iron core reduces the non-working air gap effectively when axial displacement reliably, performance is stable, the reliability is high;

4. the reinforcing rib structure at the top of the coil frame and the matching structure at the top of the yoke effectively enhance the structural strength of the coil frame and can ensure the stable assembly of the yoke on the coil frame, thereby ensuring the stable performance in use and high reliability from another angle;

5. the utility model discloses movable spring's turn stair structure had both ensured the stability of movable spring in the assembly of coil former bottom, had good elasticity again, and this is more obvious under the elastic deformation hole cooperation of C type structure especially, and the existence in elastic deformation hole and the position of arranging have effectively increased movable spring's the length of meeting an emergency to obtain better reaction curve.

Drawings

Fig. 1 is a schematic structural view of a conventional typical "sugar cube" type relay, in which a spanning path of a movable spring assembly and a stationary spring assembly is elongated, and an assembly structure between the movable spring assembly and a yoke and an armature is seen.

Fig. 2 is a state structure diagram of the utility model, the flip-chip structure of movable spring subassembly and quiet spring subassembly on the coil former can be seen in the picture, the assembly structure of iron core on the coil former and with the assembly structure of movable spring subassembly, the assembly structure of yoke on the coil former and the cooperation structure of yoke and iron core, the iron core is in initial condition, the movable spring contact of movable spring subassembly and the quiet spring contact actuation of the quiet spring subassembly of normal close that is in lower level.

Fig. 3 is another state structure diagram of the utility model, the flip-chip structure of movable spring subassembly and quiet spring subassembly on the coil former can be seen in the picture, the assembly structure of iron core on the coil former and with the assembly structure of movable spring subassembly, the assembly structure of yoke on the coil former and the cooperation structure of yoke and iron core, the iron core is in the state of going upward, the movable spring contact of movable spring subassembly and the quiet spring contact actuation of the normally open quiet spring subassembly that is in the higher order.

Fig. 4 is a schematic structural view showing an assembled state of the yoke of the present invention on the bobbin, in which a yoke assembling structure on the bobbin and a specific structure of the yoke can be seen.

Fig. 5 is a schematic view of the movable spring plate of fig. 2 and 3, in which the specific structure of the movable spring plate, in particular the elastic deformation structure, can be seen.

Fig. 6 is a schematic view of the assembled structure of the core and the movable spring plate in fig. 2 and 3, wherein the specific structure, especially the elastic deformation structure, of the movable spring plate can be seen, and the movable spring plate is connected to the lower end of the core through the core assembling hole.

Fig. 7 is a schematic view of the working principle of the present invention at the moment of coil excitation, and it can be seen in the figure that when the coil is not excited, the movable spring is assembled on the bottom surface of the coil frame in a surface contact manner through the fixing hole, the movable spring is connected with the bottom end of the iron core through the iron core assembling hole, and the movable contact connected to the movable spring is closed with the stationary contact of the lower stationary spring assembly and is disconnected with the stationary contact of the upper stationary spring assembly; after the coil is excited, the coil current generates magnetic flux in the magnetic circuit, the iron core generates an acting force moving upwards under the action of the magnetic flux and further moves upwards, the iron core moving upwards pulls the movable spring piece to enable the movable contact to move from the position of the lower static spring assembly to the position of the upper static spring assembly, and meanwhile the movable spring piece deforms to generate stress.

Fig. 8 is a schematic view of the working principle of the present invention at the moment when the excitation of the coil is cancelled, and it can be seen in the figure that before the excitation of the coil is cancelled, the iron core stops on the yoke under the action of the electromagnetic force, and the movable contact connected to the movable spring piece is attracted to the stationary contact of the upper stationary spring component and is disconnected from the stationary contact of the lower stationary spring component; after the coil is deenergized, the electromagnetic force disappears, and the iron core moves downwards under the stress action of the movable reed, so that the iron core is restored to the original position.

Fig. 9 is a partial enlarged view of fig. 8 (i.e., the fitting regions between the movable spring and the bobbin, the core, the upper stationary spring assembly and the lower stationary spring assembly), in which it can be seen that the elastic strain force F is exerted on the movable spring₁Mainly embodied at the first deformation part F_1A(i.e., the turning step) and the second deformation F_1B(i.e., the region outside the elastically deformable hole), and a third deformation F_1C(i.e., at the mouth of the elastically deformable hole and/or at the root of the region where the core fitting hole is located).

The reference numbers in the figures mean: 1. a-a coil former; 2. b-a coil; 3, iron core; 4. d-yoke iron; 5, a movable reed; 6-coil pin; 7-moving spring contact; 8-static spring contact; 9-plug-in mounting port; 10-an insertion groove; 11-reinforcing ribs; 12-a head; 13-connecting feet; 14-an elastically deformable hole; 15-movable spring pin; 16-a fixing hole; 17-contact holes; 18-core assembly holes; 19-turning step; c-a static spring assembly; e-a movable spring assembly; f-an armature; f, magnetic flux attraction; f₁-elastic strain force;F_1A-a first deformation; f_1B-a second deformation; f_1C-a third deformation.

Detailed Description

The present invention relates to a relay, and more particularly to a flip-chip type, "cube sugar" type miniature relay, which is described in detail below with reference to a plurality of embodiments. In embodiment 1, the technical solution content of the present invention is clearly and specifically explained with reference to the drawings attached to the specification, that is, fig. 2, fig. 3, fig. 4, fig. 5, fig. 6, fig. 7, fig. 8, and fig. 9, and although the drawings are not separately depicted in other embodiments, the main structure of the embodiments can still refer to the drawings attached to embodiment 1.

It is expressly stated here that the drawings of the present invention are schematic, and unnecessary details have been simplified for the purpose of clarity in order to avoid obscuring the technical solutions that contribute to the prior art.

Example 1

Referring to fig. 2, 3, 4, 5 and 6, the present invention includes a coil bobbin 1, an iron core 3, a yoke 4, a movable spring assembly and a stationary spring assembly.

The coil rack 1 is a cylindrical structure with the top end and the bottom end respectively extending outwards in a turning manner, the coil rack 1 is hollow in the axial direction to form an iron core assembling hole, and the structure with the bottom end extending outwards in a turning manner and the thickness larger than the top end is arranged at the bottom end of the coil rack 1. A coil 2 (typically an enameled coil) is fitted in the space between the top and bottom ends of the coil form 1. The bottom of the coil former 1 is provided with outwardly extending coil pins 6 connected to the coil 2. One side of the bottom of the coil rack 1 is provided with a radially extending insertion groove 10, the insertion groove 10 is through from one side of the bottom of the coil rack 1 to the iron core assembly hole, and the insertion groove 10 is of a straight groove structure (see fig. 2, 3 and 4 in particular); three reinforcing ribs 11 protruding upwards are arranged on the periphery of an iron core assembling hole on the top of the coil frame 1, the three reinforcing ribs 11 define a space with an opening on one side at the top of the coil frame 1, the outline of the space needs to be larger than the radial outline of the top end of the iron core 3, the opening direction of the space needs to be correspondingly consistent with the forming direction of a plug-in groove 10 at the bottom of the coil frame 1, and the three reinforcing ribs 11 form a plug-in type groove at the top of a space defined by the top of the coil frame 1, wherein the plug-in type groove is formed at the top of the yoke 4 (the step structure of the type groove is mainly formed at the top inner edges of the two reinforcing ribs 11 arranged oppositely), so that the yoke 4 can. In addition, the bottom surface of the bottom of the bobbin 1 is provided with a movable spring assembly mounting structure and a stationary spring assembly mounting structure.

The movable spring component mainly comprises a movable spring 5, a movable spring contact 7 and a movable spring pin 15, wherein the movable spring 5 and the movable spring pin 15 are integrally formed in an L-shaped structure. The movable spring 5 is sequentially provided with fixing holes 16, iron core assembling holes 18 and contact holes 17 at intervals, and the arrangement positions of the fixing holes 16 and the iron core assembling holes 18 on the movable spring 5 correspond to the arrangement positions of the connecting pins 13 of the movable spring 5 on the coil rack 1 and the iron core assembling holes of the assembled iron core 3 (see fig. 5 and 6 for details). The middle area between the fixing hole 16 of the movable spring 5 and the iron core assembling hole 18 is bent to form a turning step 19, the turning step 19 is of an inclined surface structure, the included angle range between the turning step 19 and the movable spring extension surface of the area where the fixing hole 16 is located is 30-60 degrees (30 degrees, 40 degrees, 45 degrees, 50 degrees or 60 degrees and the like, and the preferable range is 40-50 degrees), the turning step 19 divides the movable spring 5 into two surfaces with different heights, the fixing hole 16 is independently arranged on one surface, the iron core assembling hole 18 and the contact hole 17 are arranged on the other surface, and the existence of the turning step 19 can enhance the elastic counter force of the spring 5; in order to further optimize the elastic reaction force of the spring plate 5, an elastic deformation hole 14 with a C-shaped structure is formed on the movable spring 5 at the periphery of the iron core assembly hole 18, the elastic deformation hole 14 is positioned on the movable spring 5 between the iron core assembly hole 18 and the contact point hole 17, the position of the elastic deformation hole 14 on the movable spring 5 is close to the iron core assembly hole 18 on the movable spring 5, the contour line of the elastic deformation hole 14 corresponds to the contour line of the iron core assembly hole 18, and the opening part of the elastic deformation hole 14 faces the side of the fixed hole 16 (see fig. 5 and 6 in particular). The movable spring 5 of the foregoing structure is fitted to the connecting leg 13 at the bottom of the coil form 1 through the fixing hole 16, and the movable spring 5 in the area of the fixing hole 16 is in close surface contact fit with the bottom surface of the coil form 1, so as to enhance the stability of fitting of the spring 5 on the bottom surface of the coil form 1 (see fig. 2 and 3 in particular). The movable spring 5 with the structure is assembled and connected with the bottom end of the iron core 3 assembled in the coil rack 1 (see fig. 6 in particular) through the iron core assembling hole 18, the specific connection structure can be a common riveting mode, the contact hole 17 of the movable spring 5 is used for assembling the movable spring contact 7, and the movable spring 5 in the area where the iron core assembling hole 18 and the contact hole 17 are located needs to be in movable clearance fit with the bottom surface of the coil rack 1. It can be seen that the movable spring 5 is divided into a surface contact fit region and a movable clearance fit region with the bottom surface of the coil frame 1 by the bending step 19 of the bending structure.

The static spring component mainly comprises a static spring sheet, a static spring contact 8 and a static spring pin. The static spring is fixed on the bottom surface of the coil rack 1 through a corresponding assembly structure at the bottom of the coil rack 1, and a static spring contact 8 on the static spring is correspondingly matched with a movable spring contact 7 of a movable spring assembly fixed at the bottom of the coil rack 1. In this embodiment, the static spring assemblies are two sets, one set is a normally open static spring assembly, the other set is a normally closed static spring assembly, the dynamic spring contact 7 of the dynamic spring assembly is located between the static spring contacts of the two sets of static spring assemblies, and is attracted with the static spring contact of the normally closed static spring assembly and is disconnected with the static spring contact of the normally open static spring assembly.

The axial length of the core 3 is greater than the axial height of the bobbin 1. The diameter of the body part of the iron core 3 corresponds to the diameter of the iron core assembling hole on the coil rack 1, the top end of the iron core 3 is provided with a head part 12 with the outer diameter larger than that of the iron core assembling hole on the coil rack 1, and the whole iron core 3 is in a T-shaped structure (particularly, see the figures 2, 3 and 6); the diameter of the head 12 at the top end of the iron core 3 is required to be smaller than the space surrounded by the three reinforcing ribs 11 at the top of the coil rack 1; the top surface of the head portion 12 of the core 3 has a planar structure in order to correspond to and smoothly operate with the yoke 4 described below. The bottom end of the iron core 3 has a joint which is axially convex and has a diameter corresponding to the diameter of the iron core assembling hole 18 on the movable spring 5. The iron core 3 is axially assembled in the iron core assembling hole of the coil frame 1, the head 12 of the iron core 3 is located at the top end of the coil frame 1, the joint at the bottom end of the iron core 3 extends out of the iron core assembling hole of the coil frame 1 to correspond to the iron core assembling hole of the movable spring piece 5, and the iron core 3 is assembled and connected with the iron core assembling hole 18 of the movable spring piece 5 fixed at the bottom of the coil frame 1 through the joint at the bottom end (see fig. 2 and 3 in particular). It can be seen that the top and bottom ends of the core 3 can extend out of the corresponding top and bottom ends of the coil frame 1.

The yoke 4 has a flat-bottomed and folded structure similar to a C-shape (i.e., a portion between two sides has a straight-sided structure), and the height from the bottom to the top of the yoke 4 corresponds to the distance from the bottom to the top of the bobbin 1. The bottom of the yoke iron 4 is a straight strip-shaped structure which is matched with the inserting groove 10 at the bottom of the coil rack 1, the front end of the bottom of the yoke iron 4 is provided with an inserting opening 9 which can correspond to the peripheral outline of the iron core 3, and the inserting opening 9 is formed in a U-shaped structure, so that the movable matching relation with the iron core 3 on the coil rack 1 can be formed, and the contact area between the yoke iron 4 and the iron core 3 on the coil rack 1 can be increased to reduce the non-working air gap; the top of the yoke 4 is a straight strip-shaped structure which is matched with a top-shaped groove of a space surrounded by three reinforcing ribs 11 on the top of the coil rack 1, namely, the inner side surface of the top of the yoke 4 is a plane structure, so that the yoke can form a reliable corresponding matching relation with the head 12 of the iron core 3 assembled on the coil rack 1. The yoke iron 4 with the structure is inserted into an insertion groove 10 at the bottom of the coil rack 1 at the bottom, and is matched with the iron core 3 on the coil rack 1 by a U-shaped structure insertion opening 9 at the front end of the bottom; meanwhile, the top of the yoke iron 4 with the structure is inserted into a groove at the top of the space surrounded by the three reinforcing ribs 11 at the top of the coil rack 1, so that the top of the yoke iron 4 extends to the upper part of the top of the coil rack 1, and the top of the yoke 4 is located above the head 12 of the iron core 3 in the coil frame 1, the inner surface of the top of the yoke 4 and the head 12 of the iron core 3 are matched with each other in a planar structure, so as to prevent the iron core 3 from generating radial displacement during the axial displacement, in this way, it is preferable to form a fitting space of equal height or nearly equal height between the top inside surface of the yoke 4 and the head 12 of the core 3, the top of the yoke 4 constitutes a moving space of the core 3 in the axial direction, the head 12 of the core 3 serves as a pole face, and the yoke 4 constitutes a working air gap therewith, as shown in fig. 2, 3 and 4.

The working process of the present invention is shown in fig. 7, fig. 8 and fig. 9, and is roughly as follows:

applying a current to the coil 2 through the coil pins 6, the coil 2 being electrically energized, generating a magnetic flux in the magnetic circuit as shown in fig. 7, generating a magnetic flux attraction force F in the working air gap; when the exciting current rises to a certain set value, the moment of the magnetic flux attraction force F overcomes the elastic counter moment of the movable reed 5, the iron core 3 moves upwards axially, the top surface of the head 12 of the iron core 3 is contacted with the inner side surface of the top of the yoke iron 4 and finally stops on the yoke iron 4, the upward moving iron core 3 drives the movable reed 5 to warp upwards, the movable reed 5 deforms to generate stress, the deformation of the movable reed 5 provides overtravel, the C-shaped elastic deformation hole 14 on the movable reed 5 increases the flexibility of the movable spring and reduces the hardness of the movable spring, and the movable spring contact 7 at the end part of the movable reed 5 is attracted with the static spring contact 8 of the normally open static spring assembly and is disconnected with the static spring contact 8 of the normally closed static spring assembly;

elastic stress F of the movable spring 5 to restore its deformation when the excitation current of the coil 2 is reduced to a set value or is eliminated after the coil 2 is de-excited₁When the magnetic core is released as shown in fig. 8 and fig. 9, the iron core 3 moves downwards under the action of the elastic force of the movable spring 5, the top surface of the head part 12 of the iron core 3 moving downwards in the axial direction is disconnected with the inner side surface of the top of the yoke 4, the movable spring 5 is reset to the original position, and the movable spring contact 7 at the end part of the movable spring 5 is attracted with the static spring contact 8 of the normally closed static spring component and is disconnected with the static spring contact 8 of the normally open static spring component; in this process, since the flexible deformation hole 14 structure is arranged around the connection part of the movable spring 5 and the iron core 3, the elastic strain force F on the movable spring 5₁Mainly embodied at the first deformation part F_1A(i.e. at the turning step 19) and the second deformation F_1B(i.e., the region outside the elastically deformable hole 14), and a third deformation F_1C(be the oral area department of elastic deformation hole 14 or the root department in iron core pilot hole 18 place region promptly), the utility model discloses a form three at least deformations on movable contact spring 5, will the utility model discloses a movable contact spring structure compares with the movable contact spring that does not have elastic deformation hole (hereinafter for short "do not open elastic deformation hole movable contact spring"), and the elastic strain power main body that does not open elastic deformation hole movable contact spring appears at first deformation department, second deformation department and movable contact spring whole shapeChange, namely the counterforce is mainly generated by the first deformation part and the second deformation part, and the utility model discloses the third deformation part F that increases on the movable reed 5_1CBecause the cross section is less, the counter-force of production is also less, makes the utility model discloses first deformation department F on movable contact spring 5_1AAnd a second deformation F_1BThe deformation that all will be less than not opening the deformation of first deformation department and second deformation department on the elastic deformation hole movable contact spring, when relative iron core removed the same distance, the utility model discloses the whole counter-force that produces on the movable contact spring 5 will be less than not opening elastic deformation hole movable contact spring, the utility model discloses movable contact spring 5's whole performance becomes the compliance and is higher than not opening elastic deformation hole movable contact spring, promptly the utility model discloses movable contact spring 5's whole performance becomes the compliance higher.

Example 2

The utility model discloses a coil former, iron core, yoke, movable spring subassembly and quiet spring subassembly.

The coil rack is a cylindrical structure with the top end and the bottom end respectively extending outwards in a turning mode, the coil rack is axially hollow to form an iron core assembling hole, and the structure with the bottom end extending outwards in a turning mode and the thickness larger than the structure on the top end are arranged on the coil rack. A coil (typically an enameled coil) is fitted in the space between the top and bottom ends of the former. The bottom of the coil former is provided with outwardly extending coil pins connected to the coil. One side of the bottom of the coil rack is provided with a radially extending insertion groove which is directly communicated to the iron core assembly hole from one side of the bottom of the coil rack, and the insertion groove is of a straight groove structure; the three reinforcing ribs surround a space with an opening at one side at the top of the coil frame, the outline of the space is larger than the radial outline of the top end of the iron core, moreover, the opening direction of the space is required to be consistent with the forming direction of an inserting groove at the bottom of the coil frame, and the three reinforcing ribs form a top inserting type groove of the yoke (the step structure of the type groove is mainly formed at the top inner edges of the two reinforcing ribs which are oppositely arranged) at the top of the space surrounded by the top of the coil frame, so that the automatic assembly of the yoke is facilitated. In addition, the bottom surface of the coil rack bottom is provided with a movable spring assembly assembling structure and a static spring assembly assembling structure.

The movable spring component mainly comprises a movable spring sheet, a movable spring contact and a movable spring pin, wherein the movable spring sheet and the movable spring pin are integrally formed in an L-shaped structure. The movable reed is sequentially provided with fixing holes, iron core assembly holes and contact holes in an interval arrangement mode, and the arrangement positions of the fixing holes and the iron core assembly holes on the movable reed correspond to the arrangement positions of the iron core assembly holes of the movable reed and the connection pins of the movable reed on the coil rack. The middle area between the fixing hole of the movable spring and the iron core assembling hole is bent with a turning step, the turning step is of an inclined plane structure, the included angle between the turning step and the movable spring extension surface of the area where the fixing hole is located is 30-60 degrees (30 degrees, 40 degrees, 45 degrees, 50 degrees or 60 degrees, and the like, and the preferable range is 40-50 degrees), the movable spring is divided into two surfaces with different heights by the turning step, the fixing hole is separately arranged on one surface, the iron core assembling hole and the contact hole are arranged on the other surface, and the elastic counter force of the spring piece can be enhanced due to the existence of the turning step; in order to further optimize the elastic counter force of the spring piece, an elastic deformation hole with a C-shaped structure is formed in the movable spring piece on the periphery of the iron core assembly hole, the elastic deformation hole is formed in the movable spring piece between the iron core assembly hole and the contact hole, the position of the elastic deformation hole on the movable spring piece is close to the iron core assembly hole in the movable spring piece, the contour line of the elastic deformation hole corresponds to the contour line of the iron core assembly hole, and the opening part of the elastic deformation hole is opposite to the side of the fixing hole. The movable spring leaf of the structure is assembled on the connecting pin at the bottom of the coil rack through the fixing hole, and the movable spring leaf in the area where the fixing hole is located and the bottom surface of the coil rack form close surface contact fit, so that the assembling stability of the spring leaf on the bottom surface of the coil rack is enhanced. The movable spring piece with the structure is in assembly connection with the bottom end of the iron core assembled in the coil frame through the iron core assembly hole, the contact hole of the movable spring piece is used for assembling a movable spring contact, and the movable spring piece in the area where the iron core assembly hole and the contact hole are located needs to be in movable clearance fit with the bottom surface of the coil frame. Therefore, the movable spring is divided into a surface contact matching area and a movable clearance keeping matching area by the turning step of the bending structure.

The static spring component mainly comprises a static spring sheet, a static spring contact and a static spring pin. The static spring plate is fixed on the bottom surface of the coil rack through a corresponding assembly structure at the bottom of the coil rack, and a static spring contact on the static spring plate is correspondingly matched with a movable spring contact of a movable spring component fixed at the bottom of the coil rack. In this embodiment, the static spring assembly is a set.

The axial length of the core is greater than the axial height of the bobbin. The diameter of the iron core body part corresponds to the diameter of the iron core assembling hole on the coil rack, the top end of the iron core is provided with a head part with the outer diameter larger than the diameter of the iron core assembling hole on the coil rack, and the whole iron core is in a T-shaped structure; the diameter of the head at the top end of the iron core is required to be smaller than the space surrounded by the three reinforcing ribs at the top of the coil rack; in order to correspond to the yoke described below and to work smoothly, the top surface of the head portion of the iron core is of a planar structure. The bottom end of the iron core is provided with a joint which is axially convex and has a diameter corresponding to the diameter of the iron core assembling hole on the movable spring. The iron core is axially assembled in the iron core assembly hole of the coil frame, the head part of the iron core is positioned at the top end of the coil frame, the joint at the bottom end of the iron core extends out of the iron core assembly hole on the coil frame and corresponds to the iron core assembly hole on the movable spring piece, and the iron core is assembled and connected with the iron core assembly hole fixed on the movable spring piece at the bottom of the coil frame through the joint at the bottom end. It can be seen that the top and bottom ends of the core can extend out of the corresponding top and bottom ends of the coil frame.

The yoke has a flat-bottom folded edge structure similar to a C-shape (i.e., the portion between two edges is a straight edge structure), and the height from the bottom to the top of the yoke corresponds to the distance from the bottom to the top of the bobbin. The bottom of the yoke is a straight strip-shaped structure which is matched with the insertion groove at the bottom of the coil rack, the front end of the bottom of the yoke is provided with an insertion opening which can correspond to the peripheral outline of the iron core, and the insertion opening is formed in a U-shaped structure, so that the movable fit relation can be formed between the yoke and the iron core on the coil rack, and the contact area between the yoke and the iron core on the coil rack can be increased to reduce the non-working air gap; the top of the yoke is a straight strip-shaped structure matched with a top section groove of a space surrounded by three reinforcing ribs on the top of the coil rack, namely, the inner side surface of the top of the yoke is a plane structure, so that the yoke can form a reliable corresponding matching relation with the head of the iron core assembled on the coil rack. The yoke iron with the structure is inserted into the insertion groove at the bottom of the coil rack by the bottom, and is matched with the iron core on the coil rack by the insertion opening with the U-shaped structure at the front end of the bottom; meanwhile, the top of the yoke of the structure is inserted into a groove at the top of a space surrounded by three reinforcing ribs at the top of the coil frame, so that the top of the yoke extends to the top of the coil frame, the top of the yoke is positioned above the head of the iron core in the coil frame, the inner side surface of the top of the yoke is matched with the head of the iron core in a planar structure, and the technical problem that the iron core is radially abutted in axial displacement is solved.

The working process of the utility model is roughly as follows:

-applying a current to the coil through the coil pins, the coil being electrically energized to generate a magnetic flux in the magnetic circuit and a magnetic flux attraction force in the working air gap; when the exciting current rises to a certain set value, the moment of the magnetic flux attraction force overcomes the elastic counter moment of the movable spring piece, so that the iron core moves upwards axially, the top surface of the head of the iron core is contacted with the inner side surface of the top of the yoke and finally stops on the yoke, the moving iron core drives the movable spring piece to warp upwards, the movable spring piece deforms to generate stress, and the movable spring contact at the end part of the movable spring piece is attracted with the static spring contact of the static spring component;

when the exciting current on the coil is reduced to a certain set value or eliminated after the coil is de-excited, the elastic stress of the movable spring leaf for restoring the deformation is released, the iron core moves downwards under the action of the elastic force of the movable spring leaf, the top surface of the head of the iron core which moves downwards in the axial direction is disconnected with the inner side surface of the top of the yoke, the movable spring leaf is reset to the original position, and the movable spring contact at the end part of the movable spring leaf is disconnected with the static spring contact of the static spring assembly.

Example 3

The coil rack is a cylindrical structure with the top end and the bottom end respectively extending outwards in a turning mode, the coil rack is axially hollow to form an iron core assembling hole, and the structure with the bottom end extending outwards in a turning mode and the thickness larger than the structure on the top end are arranged on the coil rack. A coil (typically an enameled coil) is fitted in the space between the top and bottom ends of the former. The bottom of the coil former is provided with outwardly extending coil pins connected to the coil. One side of the bottom of the coil rack is provided with a radially extending insertion groove which is directly communicated to the iron core assembly hole from one side of the bottom of the coil rack, and the insertion groove is of a straight groove structure. In addition, the bottom surface of the coil rack bottom is provided with a movable spring assembly assembling structure and a static spring assembly assembling structure.

The static spring component mainly comprises a static spring sheet, a static spring contact and a static spring pin. The static spring plate is fixed on the bottom surface of the coil rack through a corresponding assembly structure at the bottom of the coil rack, and a static spring contact on the static spring plate is correspondingly matched with a movable spring contact of a movable spring component fixed at the bottom of the coil rack. In this embodiment, the static spring assemblies are two sets, one set is a normally open static spring assembly, the other set is a normally closed static spring assembly, and the dynamic spring contact of the dynamic spring assembly is located between the static spring contacts of the two sets of static spring assemblies, and is attracted with the static spring contact of the normally closed static spring assembly and is disconnected with the static spring contact of the normally open static spring assembly.

The axial length of the core is greater than the axial height of the bobbin. The diameter of the iron core body part corresponds to the diameter of the iron core assembling hole on the coil rack, the top end of the iron core is provided with a head part with the outer diameter larger than the diameter of the iron core assembling hole on the coil rack, and the whole iron core is in a T-shaped structure; in order to correspond to the yoke described below and to work smoothly, the top surface of the head portion of the iron core is of a planar structure. The bottom end of the iron core is provided with a joint which is axially convex and has a diameter corresponding to the diameter of the iron core assembling hole on the movable spring. The iron core is axially assembled in the iron core assembly hole of the coil frame, the head part of the iron core is positioned at the top end of the coil frame, the joint at the bottom end of the iron core extends out of the iron core assembly hole on the coil frame and corresponds to the iron core assembly hole on the movable spring piece, and the iron core is assembled and connected with the iron core assembly hole fixed on the movable spring piece at the bottom of the coil frame through the joint at the bottom end. It can be seen that the top and bottom ends of the core can extend out of the corresponding top and bottom ends of the coil frame.

The yoke has a flat-bottom folded edge structure similar to a C-shape (i.e., the portion between two edges is a straight edge structure), and the height from the bottom to the top of the yoke corresponds to the distance from the bottom to the top of the bobbin. The bottom of the yoke is a straight strip-shaped structure which is matched with the insertion groove at the bottom of the coil rack, the front end of the bottom of the yoke is provided with an insertion opening which can correspond to the peripheral outline of the iron core, and the insertion opening is formed in a U-shaped structure, so that the movable fit relation can be formed between the yoke and the iron core on the coil rack, and the contact area between the yoke and the iron core on the coil rack can be increased to reduce the non-working air gap; the top of the yoke is in a straight strip structure, that is, the inner surface of the top of the yoke is in a plane structure, so that the yoke can form a reliable corresponding fit with the head of the iron core assembled on the coil frame. The yoke iron with the structure is inserted into the insertion groove at the bottom of the coil rack by the bottom, and is matched with the iron core on the coil rack by the insertion opening with the U-shaped structure at the front end of the bottom; the top of the yoke of the above structure extends to above the top of the coil rack, and the top of the yoke is located above the head of the iron core in the coil rack, the top inside surface of the yoke and the head of the iron core are matched with each other in a planar structure, so as to prevent the iron core from radial displacement in the axial displacement motion.

The working process of the utility model is roughly as follows:

-applying a current to the coil through the coil pins, the coil being electrically energized to generate a magnetic flux in the magnetic circuit and a magnetic flux attraction force in the working air gap; when the exciting current rises to a certain set value, the moment of the magnetic flux attraction overcomes the elastic counter moment of the movable spring leaf, so that the iron core moves upwards axially, the top surface of the head of the iron core is contacted with the inner side surface of the top of the yoke and finally stops on the yoke, the moving iron core drives the movable spring leaf to warp upwards and deform, the movable spring leaf deforms to generate stress, and the movable spring contact at the end part of the movable spring leaf is attracted with the static spring contact of the normally open static spring component and is disconnected with the static spring contact of the normally closed static spring component;

when the exciting current on the coil is reduced to a certain set value or eliminated after the excitation of the coil is removed, the elastic stress of the movable spring leaf for restoring the deformation is released, the iron core moves downwards under the action of the elastic force of the movable spring leaf, the top surface of the head of the iron core which moves downwards in the axial direction is disconnected with the inner side surface of the top of the yoke, the movable spring leaf is reset to the original position, and the movable spring contact at the end part of the movable spring leaf is attracted with the static spring contact of the normally closed static spring component and is disconnected with the static spring contact of the normally open static spring component.

Example 4

The movable spring component mainly comprises a movable spring sheet, a movable spring contact and a movable spring pin, wherein the movable spring sheet and the movable spring pin are integrally formed in an L-shaped structure. The movable reed is smooth sheet structure, has seted up fixed orifices, iron core pilot hole and contact hole in proper order with the interval mode of arranging on the movable reed, and the position of arranging of the fixed orifices on the movable reed and iron core pilot hole is corresponding with the position of arranging of the iron core pilot hole of the connection foot of the assembly movable reed on the coil former and assembly iron core. In order to enhance the elastic counter force of the spring piece, an elastic deformation hole with a C-shaped structure is formed in the movable spring piece on the periphery of the iron core assembly hole, the elastic deformation hole is formed in the movable spring piece between the iron core assembly hole and the contact hole, the position of the elastic deformation hole on the movable spring piece is close to the iron core assembly hole in the movable spring piece, the outline profile of the elastic deformation hole corresponds to the outline profile of the iron core assembly hole, and the opening part of the elastic deformation hole is opposite to one side of the fixing hole. The movable spring leaf with the structure is assembled on the connecting pin at the bottom of the coil frame through the fixing hole, and the movable spring leaf in the area of the fixing hole is in close surface contact fit with the bottom surface of the coil frame, so that the assembling stability of the spring leaf on the bottom surface of the coil frame is enhanced; the coil former bottom surface of the above-mentioned structure that the middle part region between the fixed orifices of movable contact spring and the iron core pilot hole corresponds has the stair structure of indent, and this stair structure makes the coil former bottom surface of above-mentioned structure have two faces of co-altitude not, based on the existence of this stair structure for the movable contact spring of iron core pilot hole and contact hole place region keeps clearance fit with the bottom surface of coil former. The movable spring piece with the structure is assembled and connected with the bottom end of the iron core assembled in the coil frame through the iron core assembling hole, and the contact hole of the movable spring piece is used for assembling a movable spring contact. Therefore, the movable spring plate with the flat sheet structure is divided into a surface contact matching area and a movable clearance matching area with the bottom surface of the coil frame due to the step structure on the bottom surface of the coil frame.

The working process of the utility model is roughly as follows:

Example 5

The yoke has a flat-bottom folded edge structure similar to a C-shape (i.e., the portion between two edges is a straight edge structure), and the height from the bottom to the top of the yoke corresponds to the distance from the bottom to the top of the bobbin. The bottom of the yoke iron is a straight strip-shaped structure which is matched with the insertion groove at the bottom of the coil rack; the top of the yoke is a straight strip-shaped structure matched with a top section groove of a space surrounded by three reinforcing ribs on the top of the coil rack, namely, the inner side surface of the top of the yoke is a plane structure, so that the yoke can form a reliable corresponding matching relation with the head of the iron core assembled on the coil rack. The bottom of the yoke iron with the structure is inserted in the insertion groove at the bottom of the coil rack, and the front end of the bottom of the yoke iron is in butt joint fit with the iron core on the coil rack; meanwhile, the top of the yoke of the structure is inserted into a groove at the top of a space surrounded by three reinforcing ribs at the top of the coil frame, so that the top of the yoke extends to the top of the coil frame, the top of the yoke is positioned above the head of the iron core in the coil frame, the inner side surface of the top of the yoke is matched with the head of the iron core in a planar structure, and the technical problem that the iron core is radially abutted in axial displacement is solved.

The working process of the utility model is roughly as follows:

Example 6

The yoke has a flat-bottom folded edge structure similar to a C-shape (i.e., the portion between two edges is a straight edge structure), and the height from the bottom to the top of the yoke corresponds to the distance from the bottom to the top of the bobbin. The bottom of the yoke is of a straight plate strip-shaped structure which is matched with the insertion groove at the bottom of the coil rack, the front end of the bottom of the yoke is provided with an insertion opening which can correspond to the peripheral outline of the iron core, and the insertion opening is formed in a circular structure, so that the movable fit relation between the yoke and the iron core on the coil rack can be formed, the contact area between the yoke and the iron core on the coil rack can be increased, and the non-working air gap can be reduced (the contact area between the circular structure insertion opening and the iron core is larger than that of the U-shaped structure insertion opening, and the non-working air gap can be; the top of the yoke is a straight strip-shaped structure matched with a top section groove of a space surrounded by three reinforcing ribs on the top of the coil rack, namely, the inner side surface of the top of the yoke is a plane structure, so that the yoke can form a reliable corresponding matching relation with the head of the iron core assembled on the coil rack. The yoke iron of the structure is inserted into the insertion groove at the bottom of the coil rack at the bottom, and is matched with the iron core on the coil rack by the circular structure insertion opening at the front end of the bottom (based on the sealing performance of the circular structure insertion opening, the yoke iron can not be simply inserted into the insertion groove and is directly matched with the iron core assembled on the coil rack, corresponding adjustment needs to be made from an assembly process, for example, after the yoke iron is assembled on the coil rack, the iron core is penetrated into the iron core assembly hole of the coil rack, the head of the iron core can be considered to be arranged in a detachable structure, and the specific assembly process can be additionally designed according to technical problems, and only the matching structure of the yoke iron and the iron core is explained here, and the specific assembly process is additionally considered); meanwhile, the top of the yoke of the structure is inserted into a groove at the top of a space surrounded by three reinforcing ribs at the top of the coil frame, so that the top of the yoke extends to the top of the coil frame, the top of the yoke is positioned above the head of the iron core in the coil frame, the inner side surface of the top of the yoke is matched with the head of the iron core in a planar structure, and the technical problem that the iron core is radially abutted in axial displacement is solved.

The working process of the utility model is roughly as follows:

The above examples are only for illustrating the present invention and are not to be construed as limiting the same. Although the present invention has been described in detail with reference to the above embodiments, it should be understood by those skilled in the art that: the specific technical solutions in the above embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the present invention in its essence.

Claims

1. The utility model provides a flip-chip miniature relay, includes coil former (1), iron core (3), yoke (4), movable spring subassembly and quiet spring subassembly, be equipped with coil (2) on the coil former (1), movable spring subassembly and quiet spring subassembly assemble respectively in the bottom of coil former (1) and make movable spring contact (7) and quiet spring contact (8) correspond the cooperation, its characterized in that: the coil frame is characterized in that the iron core (3) is axially assembled in the coil frame (1) in a mode that two ends of the iron core can extend out of the corresponding end part of the coil frame (1), the bottom end of the iron core (3) is connected with a movable reed (5) of the movable reed assembly, the bottom of the yoke (4) is assembled at the bottom and the top of the coil frame (1) and extends to the upper part of the top of the coil frame (1), and the top of the yoke (4) is positioned above the top end of the iron core (3) to form an axial movable space of the iron core (3).

2. The flip-chip miniaturised relay according to claim 1, characterised in that: the inner side surface of the top of the yoke (4) is of a plane structure; correspondingly, the top end of the iron core (3) is also of a plane structure.

3. The flip-chip miniaturised relay according to claim 1 or 2, characterised in that: the yoke iron (4) is of a C-shaped structure.

4. The flip-chip miniaturised relay according to claim 1 or 2, characterised in that: the top of iron core (3) has head (12) that the external diameter is greater than iron core pilot hole diameter on coil former (1), and whole iron core (3) are T type structure, head (12) on iron core (3) are in the top department of coil former (1), head (12) top surface of iron core (3) is planar structure.

5. The flip-chip miniaturised relay according to claim 1, characterised in that: the bottom of the coil rack (1) is provided with an insertion groove (10) for assembling the yoke (4), the insertion groove (10) is communicated to an iron core assembling hole from the side face of the bottom of the coil rack (1) and is of a straight groove structure, the bottom of the yoke (4) is of a straight strip structure matched with the insertion groove (10), and the bottom of the yoke (4) is assembled at the bottom of the coil rack (1) through the insertion groove (10).

6. The flip-chip miniaturised relay according to claim 5, characterised in that: the front end of the bottom of the yoke (4) is provided with an insertion opening (9) corresponding to the peripheral outline of the iron core (3).

7. The flip-chip miniaturised relay according to claim 6, characterised in that: the insertion opening (9) at the front end of the bottom of the yoke (4) is of a U-shaped structure or a circular structure.

8. The flip-chip miniaturised relay according to claim 1 or 5, characterised in that: the iron core assembling hole periphery at the top of the coil rack (1) is provided with three reinforcing ribs (11) protruding upwards, the three reinforcing ribs (11) enclose a space with a contour larger than the radial contour of the iron core (3) at the top of the coil rack (1), the three reinforcing ribs (11) form a top plug-in type groove of the yoke (4) at the top of the space enclosed at the top of the coil rack (1), and the top of the yoke (4) is assembled at the top of the coil rack (1) through the plug-in type groove enclosed by the three reinforcing ribs (11) at the top of the coil rack (1).

9. The flip-chip miniaturised relay according to claim 1, characterised in that: fixing holes (16), iron core assembly holes (18) and contact holes (17) have been seted up in proper order with the interval mode of arranging on movable reed (5) of movable spring subassembly, movable reed (5) are in through fixing holes (16) the bottom of coil former (1), movable reed (5) are through the bottom erection joint of iron core assembly holes (18) with iron core (3), contact hole (17) are used as assembly movable spring contact (7), the region in fixed holes (16) movable reed (5) with the bottom surface formation face contact cooperation of coil former (1), iron core assembly holes (18) and contact hole (17) are in the region movable reed (5) with the bottom surface of coil former (1) keeps the clearance fit.

10. The flip-chip miniaturised relay according to claim 9, characterised in that: the area between the fixing hole (16) of the movable spring plate (5) and the iron core assembling hole (18) is provided with a turning step (19), and the turning step (19) divides the movable spring plate (5) into a matching area in surface contact with the bottom surface of the coil rack (1) and a matching area for keeping a movable clearance.

11. The flip-chip miniaturised relay according to claim 9 or 10, characterised in that: and the movable spring (5) at the periphery of the iron core assembling hole (18) is provided with an elastic deformation hole (14) with a C-shaped structure, and the elastic deformation hole (14) is positioned on the movable spring (5) between the iron core assembling hole (18) and the contact hole (17).