CN1246957A

CN1246957A - Filling hole and filling projection

Info

Publication number: CN1246957A
Application number: CN98802339A
Authority: CN
Inventors: J·M·哈尔特
Original assignee: Siemens Electromechanical Components Inc
Current assignee: Siemens Electromechanical Components GmbH and Co KG; Siemens Electromechanical Components Inc
Priority date: 1997-02-06
Filing date: 1998-01-26
Publication date: 2000-03-08
Anticipated expiration: 2018-01-26
Also published as: DE69802955D1; KR20000070845A; DE69802955T2; EP1021814B1; WO1998035371A2; CN1129940C; WO1998035371A3; JP2001510628A; TW405137B; EP1021814A2

Abstract

An electromagnetic relay includes a base, a bobbin with a core and at least one winding about the core, a pair of pole pieces extending perpendicularly from the ends of the core, an elongate armature movable with respect to a movable contact, a permanent magnet coupled magnetically between the core and armature and at least one stationary contact. The bobbin further comprises a set of end flanges adjacent the pole pieces, with a means for engaging the end flanges with the pole pieces. The base is provided with a hole therein for inserting an epoxy to bond the bobbin to the base. The cross-sectional area of the core is non-uniform to engage a pair of pole pieces. A bore within the bobbin has a non-uniform cross-sectional area. A bobbin is also provided with depressions at various locations of the flanges and with terminal wires molded within the flanges.

Description

The hole of filling and the protuberance of filling

Background of invention

1. TECHNICAL FIELD OF THE INVENTION

It has and installs and be connected the structure of all kinds of parts of relay and the advantage of method during operation with relating to electromagnetic relay in the present invention.

2. description of related art

Electromagnetic relay is well-known, and it is widely used in whole electronics industry.Electromagnetic relay generally comprises winding, iron core, permanent magnet, armature, movable contact and at least one fixed contact on drum stand, the drum stand.These parts are installed the back and are formed electromagnet component.Electromagnet component is with keeping assembly to be contained on the pedestal.Pedestal also provides a socket, so that the terminal of contact and electromagnet component is electrically connected on load circuit and the control circuit.Outer cover generally is positioned at above the relay, can be connected with pedestal, to form airtight shell.For suitably working, accurate tolerance must be installed and keep to electromagnetic relay assembly.Unfortunately, the operational environment of many electromagnetic relays is not suitable for keeping close tolerance (for example, automobile, manufactory, machinery and dynamics factory, or the like).The environmental condition such as the temperature difference, vibration, humidity and dust usually cause moving between the several assemblies of relay, change the running of desired tolerance and infringement relay thus.For example, the distance between movable contact and the fixed contact, i.e. contact gap; Be positioned at load on the fixed contact by movable contact, promptly mobile greatly; Move to the whole distance that contacts electromagnet with armature, i.e. armature clearance, they all must be set and maintain in the limit of a precision.Because moving of many assemblies, each all is mutually related in these design parameters.Therefore, the desired fault usually cause relay and the electronic circuit relevant at last that moves with relay.

Therefore, for solving at relay and cooperating with relay, there are a kind of needs in long-standing adverse effect problem to electromagnetic relay on the electronic circuit, and promptly the structure that is provided will be stood abominable operational environment with the mode of being installed and still keep accurate tolerance.The various modular constructions of electromagnetic relay provided herein are enhanced, and it will be eliminated moving between the assembly and also form more reliable relay thus.

Brief summary of the invention

Main purpose of the present invention is that a kind of abominable operational environment is kept close tolerance simultaneously between several assemblies electromagnetic relay that stands will be provided.As announcement and the statement of this paper, this main purpose realizes by the structure that strengthens electromagnetic relay.

Electromagnetic relay provided by the invention comprises that pedestal and the electromagnet component on pedestal comprise the drum stand with iron core, at least one around the winding of iron core and a pair of board-like pole piece from the core ends vertical extent.Drum stand also has a pair of end plate, one of them of the contiguous pole piece of each end plate.The device that end plate is connected with pole piece.In a preferred embodiment, protuberance or analog be from each end plate vertical extent, from can insert cooperate with recess or analog each pole piece.This device that end plate is connected with pole piece has prevented that assembly is reversed the possibility of installation.

Electromagnetic relay of the present invention also provides the advantageous feature of pedestal and bobbin bracket structure aspect.This characteristic comprises that pedestal has a hole, drum stand have one from the drum stand vertically extending protuberance, it cooperates with hole in the pedestal insertedly.When drum stand was installed on the pedestal, epoxy resin can be filled in the hole.Present embodiment is a taper protuberance from the drum stand extension.The meniscus of epoxy resin in the open-work will be stung in the tail tip of taper protuberance, and epoxy resin is flow down around the protuberance that extends from drum stand.In addition, between drum stand part and pedestal, form cavity.Epoxy resin will continue to flow down and be full of cavity along the length direction of protuberance.After epoxy resin solidifies, drum stand with vertical fixing on pedestal, and relatively not motion of pedestal thus.

Another favourable architectural characteristic is the shape that drum stand endoporus and magnetic core are integrated.The present invention discloses and the hole of statement has inconsistent longitudinal cross-section.A plurality of planes also form along the length direction in hole.A plurality of planes are tapered, vertically on the contrary corresponding to inconsistent cross section, limit the vertical step of consistent cylindrical cross section with formation along the hole, so that admit the iron core with corresponding even cylindrical cross-section insertedly.In a preferred embodiment, the inconsistent cross section in this hole is taper.The present invention also discloses and a kind of cylinder-shaped iron core of stating has core and two ends.In a preferred embodiment, axially to ending, its diameter that has is less than the diameter of core for this end and core.Change in the step on the diameter and to make the shoulder part of on change point, having determined magnetic core.Shoulder has partly guaranteed the correct joint between magnetic core and a pair of pole piece.Particularly, the preferred embodiment has guaranteed the pole piece of the relay electromagnet component end that is positioned and reclining, and non-working-gap is minimized.

The present invention also provides the another kind of architectural characteristic of electromagnetic relay drum stand as described before.The drum stand of this specific character comprises a pair of end plate, and end plate has a plurality of recesses.In a preferred embodiment, the formation of two recesses has guaranteed to keep distance between load and the control circuit.

The present invention also provides the another kind of architectural characteristic of electromagnetic relay drum stand as described before.Have an a pair of end plate and a central plate in drum stand, each above-mentioned plate has mold pressing winding terminal line within it separately.In a preferred embodiment, cross the recess of central plate around the link tester of the coil of drum stand iron core, when it during round coiling iron core, coil also is connected with each winding terminal line.After realizing permanent the connection between winding wire and the winding terminal line, terminal line onwards forms.An advantage that forms connection forward is the loose electric wire of tension.

Brief description of the drawings

For understanding the present invention better, with the following description of typical embodiment and accompanying drawing as a reference, wherein:

Fig. 1 is the exploded perspective view of the electromagnetic relay made according to the preferred embodiment of the invention;

Fig. 2 A is the partial view that the end plate of band protuberance amplifies.

Fig. 2 B is the end view that the end plate of band protuberance amplifies.

Fig. 3 A is the partial view that typical pole piece amplifies, and has a recess on it;

Fig. 3 B is the end view that typical pole piece amplifies, and has a recess on it;

Fig. 4 is the partial perspective view that drum stand amplifies, and it has a protuberance and has the pedestal in hole;

Fig. 4 A is the amplification stereogram of porose base part;

Fig. 4 B is the amplification stereogram of the protuberance on the drum stand;

Fig. 5 is the zoomed-in view of drum stand, and the protuberance that it has injects to have in the pedestal in a hole, and epoxy resin is arranged in the hole;

Fig. 5 A is the partial view that drum stand amplifies, and the protuberance that it has injects to have in the pedestal in a hole, and epoxy resin is arranged in the hole;

Fig. 6 is the zoomed-in view that epoxy resin is filled cavity between drum stand and the pedestal;

Fig. 6 A epoxy resin is filled the enlarged partial view of cavity between drum stand and the pedestal;

Fig. 7 is a drum stand and around thereon winding partial top view;

Fig. 8 is a drum stand and around thereon winding partial side view;

Fig. 9 is drum stand and the winding partial sectional view along the intercepting of Fig. 8 line 9-9 place;

Figure 10 is the drum stand partial sectional view, and it has a bellmouth; With

Figure 11 is the partial perspective view of a pair of fixed terminal, and they have the interference protuberance.

Detailed description of preferred embodiment

Referring now to Fig. 1, the electromagnetic relay of the present invention that it shows is generally referenced as 8.Relay comprises pedestal 10, and it determines the main or base plane of relay.Pair of

fixed contacts terminal

12 and 14 is fastened on the pedestal 10; These

fixed terminals

12 and 14 planes perpendicular to pedestal 10 are provided with, and fixed contact 16 and 18 are set.

Fixed terminal

12 and 14 injects in the groove 20 of pedestal 10, and is fixed by riveted joint, epoxy resin or other suitable fluid sealant or methods.In addition,

winding terminal

22 and 24 and total winding terminal 26 be fixed in the pedestal 10 with similar method.A pair of inhibition suppresses resistance or other assemblies can be arranged on the pedestal 10, and is connected with 26 with

winding terminal

22,24.

The electromagnet component 30 that is arranged on the pedestal 10 comprises drum stand 32, and it is furnished with end plate 38 and 40, around thereon a pair of winding 34 and 36 and central plate 42.End plate 38 and 40 is provided with recess 37.Cylinder-shaped iron core 44 axially inserts in drum stand 32 and winding 34 and 36, and be connected with 48 with a pair of board-like pole piece 46 in its end, the recess 50 that pole piece forms and 52 cooperates with protuberance 54 and 56 on end plate 38 and 40, also form through

hole

58 and 60 on the end plate, they correspond respectively to the diameter of iron core 44.In a preferred embodiment, iron core 44 comprises a core 45 and two ends 47 and 49.

End

47 and 49 and core 45 axial alignment.The diameter that

end

47 and 49 has is less than the diameter of core 45.This vary in diameter forms step, has constituted the shoulder on the change point thus.In a preferred embodiment, the hole that the

hole

58 and 60 in

pole piece

46 and 48 has is corresponding to the diameter of end 47 and 49.Fig. 2 A and 2B have shown the details of protuberance 54 on the preferred embodiment end plates 38 and 40 and 56.Fig. 3 A and 3B have described in the preferred embodiment details of recess 50 on the

pole piece

46 and 48 and 52.

Board-like elongated permanent magnet 62 is provided with along side of drum stand 32, and its plane, place is perpendicular to the plane of pedestal 10, and overlap joint end plate 38 and 40 and pole piece 46 and 48.Permanent magnet 62 magnetizes in the mode of three utmost points.Make and have identical magnetic pole (south magnetic pole S) at two ends and have opposite magnetic pole (north magnetic pole N) at its center.One is elongated, board-like armature 64 slight jack-knifes, the central magnetic pole N symmetry of it and permanent magnet 62, so as it the end and

pole piece

46 and 48 in one between form air gap.Each end of armature 64 is separated into a pair of supporting

leg

66 and 68 by

groove

72 and 74 respectively.

Banded removable contact spring 76 by rivet 78 or suchlike mode be fixed on the core of armature 64.The first removable banded bar 80 can be connected with contact spring 76.A pair of

movable contact

82 and 84 is fixed on first tape 80 by welding or any other suitable mode.First end of second tape 86 is fixed on first tape 80 and in the middle of movable contact 82 and 84.Second end of second tape 86 is fixed on the removable terminal 88, to transmit load current between

movable contact

82,84 and removable terminal 88.As

terminal

12 and 14, removable terminal 88 is fixed in the pedestal 10 in an identical manner.

When the relay part was pressed dotted line among Fig. 1 and installed, the

coil terminals

92,94 that is anchored on the

coiling frame plate

38,40 and 42 was connected with 26 by welding or other modes that suits and

winding terminal

22,24 with 96.In a preferred embodiment, recess 37 forms the gap that increases between a pair of board-

like pole piece

46,48 and coil terminals 92,94.Outer cover 98 can be placed on above the mounted relay, so that form airtight shell with pedestal 10.

Fig. 4,4A and 4B have described the detailed view of the pedestal 100 of definite hole 102 and drum stand 104, drum stand comprises protuberance 106, it is from a last vertical extent of drum stand 104, thus, when the dotted line that shows in it when pedestal 100 and drum stand 104 was installed, protuberance 106 can insert in the hole 102.Shown protuberance 106 is preferred conical in shape.

Fig. 5 and 5A represent that drum stand 104 comprises a protuberance 106, and it matches with the pedestal 100 with hole 102.Wherein protuberance 106 inserts in the hole 102.Not solidified epoxy resin 108 in Fig. 5 A display aperture 102.As shown in the figure, the tail tip of protuberance 106 enters the meniscus of not solidified epoxy resin 108, makes not solidified epoxy resin produce flowing along protuberance 106 edges thus.Shown in Fig. 6 and 6A, cavity 110 is determined between drum stand 104 and pedestal 100.When epoxy resin flowed along protuberance 106 edges, not solidified epoxy resin 108 102 flow to cavity 110 from the hole.Epoxy resin in cavity 110 will be fixed on drum stand 104 on the pedestal 100 when it solidifies.

Referring now to Fig. 7,8 and 9, show the drum stand of electromagnetic relay of the present invention.Drum stand 112 is included in a pair of

winding

114 and 116 that twines between end plate 118,120 and the central plate 122 on the drum stand.End plate 118,120 and central plate 122 have the winding terminal line 124,126 and 128 that is embossed in wherein respectively.The lead-in wire initiating terminal 130 of winding 114 is by welding or other suitable modes are connected with terminal line 124 and it is wrapped on the drum stand 112.Terminal lead 132 paths of winding 114 are connected to winding terminal line 128 by the recess of central plate 122 and in the identical mode of cardinal principle.The lead-in wire initiating terminal 134 of winding 116 also is connected with winding terminal 128 in an identical manner substantially and is wrapped on the drum stand 112.The terminal lead 136 of coiling 116 is connected with winding terminal line 126 with the identical above-mentioned connected mode of cardinal principle.In a preferred embodiment, winding terminal line 128, terminal lead 132 and lead-in wire origin or beginning 134 onwards form, so that strain loose electric wire.

Figure 10 represents the cutaway view of the preferred embodiment of drum stand 138, and it has hole 140, and hole 140 has conical in shape.

Figure 11 represents the preferred embodiment and the stereogram of a pair of

fixed terminal

142 and 144, it have an interference protuberance 146.When terminal 142 when 144 are connected with pedestal insertedly, interfere protuberance 146 to guarantee interference fits.

Should be appreciated that in this article the disclosed embodiments only are for example, those of ordinary skill in the art can make a change and improve and do not break away from the spirit and scope of the present invention at the embodiment that is disclosed.All such changes and improvements will be included among the definite scope of the present invention of accessory claim book.

Claims

1. electromagnetic relay comprises:

Limit the pedestal of base plane;

Electromagnet component on the pedestal has iron core, the device of excitation winding comprises drum stand and at least one coil around iron core, a pair of pole piece is from above-mentioned core ends vertical extent, above-mentioned drum stand has a pair of end plate, one of them of the contiguous above-mentioned pole piece of each end plate, and the device that above-mentioned end plate is connected with above-mentioned pole piece;

Elongated armature pivotally is bearing in its central part so that it can do angular movement around the centrally-pivoted axle axis between service position, two contacts, and arbitrary end of armature limits an air gap at the either side of pivotal axis and above-mentioned one of them pole piece,

Permanent magnet is magnetic couplings between above-mentioned iron core and above-mentioned armature, so that produce identical magnetic pole on above-mentioned two pole pieces, and provides opposite magnetic pole at the above-mentioned central part that is in close proximity to armature;

At least one movable contact spring is fixedly attached to the mid portion at armature two ends, and near each end of armature, form contact point arm, above-mentioned contact point arm has movable contact so that according to the moving of armature, be installed in said base on corresponding fixed contact contact and disengage; With the conductor that above-mentioned contact point arm is connected with removable contact terminal on being contained in said base.

2. by the relay of claim 1, wherein, above-mentioned end plate has vertically extending from it protuberance and above-mentioned pole piece has recess, and above-mentioned protuberance cooperates with above-mentioned recess insertedly.

3. by the relay of claim 1, wherein, above-mentioned iron core is cylindrical, and above-mentioned iron core comprises a core and two ends, and above-mentioned end diameter wherein is less than the diameter of above-mentioned core.

4. by the relay of claim 3, wherein each above-mentioned pole piece has the hole corresponding to above-mentioned two end diameter of above-mentioned iron core, so that hold above-mentioned two ends insertedly in the above-mentioned hole of above-mentioned pole piece.

5. electromagnetic relay comprises:

Limit the pedestal of base plane, have a hole in it;

Electromagnet component on the pedestal has iron core, and the device of excitation winding comprises drum stand and at least one around the coil of iron core with from the vertically extending a pair of pole piece of above-mentioned core ends;

From the vertically extending protuberance of above-mentioned drum stand, it cooperates with above-mentioned hole in the said base insertedly;

Elongated armature can pivotally be supported in its middle part, so that between service position, two contacts, can do angular movement, limit an air gap in arbitrary end of the armature on the either side of pivotal axis and the above-mentioned pole piece of one of them around the centrally-pivoted axle axis;

Permanent magnet is magnetic couplings between above-mentioned iron core and above-mentioned armature, so that produce identical magnetic pole on above-mentioned two pole pieces, and forms opposite magnetic pole in the above-mentioned centre that is in close proximity to armature;

At least one movable contact spring is fixedly attached to the pars intermedia at armature two ends, and near each end of armature, form contact point arm, above-mentioned contact point arm band movable contact so that according to the moving of armature, be installed in said base on corresponding fixed contact contact and disengage; With

The conductor that above-mentioned contact point arm is connected with mobile contact terminal on being contained in said base.

6. by the relay of claim 5, wherein, above-mentioned protuberance is taper, the tail tip of above-mentioned protuberance insertedly with said base in above-mentioned hole align.

7. press the relay of claim 6, wherein, by epoxy resin being filled in the above-mentioned hole, above-mentioned hole and above-mentioned protuberance limit above-mentioned drum stand are fixed on device on the said base, above-mentioned taper protuberance enters the meniscus of above-mentioned epoxy resin, make above-mentioned epoxy resin be created in flowing around the above-mentioned protuberance,, form periphery around above-mentioned hole to be filled in the space that forms between above-mentioned taper protuberance and the base part.

8. by the relay of claim 7, wherein a cavity is formed between above-mentioned coiled frame and the said base, and wherein above-mentioned cavity is filled by above-mentioned epoxy resin.

9. electromagnetic relay comprises:

At least one is contained in a fixed contact and a movable contact that is contained on the pedestal on the pedestal, and this movable contact can move with respect at least one fixed contact;

The electromagnet component that is contained on the pedestal has iron core, has a hole and at least one drum stand that centers on the coil in above-mentioned hole, and above-mentioned iron core can insert in the into above-mentioned hole, and above-mentioned hole has the cross section of variation along the length direction in above-mentioned hole.

10. by the electromagnetic relay of claim 9, wherein the cross section of the above-mentioned variation in above-mentioned hole is taper.

11. by the electromagnetic relay of claim 9, wherein, a plurality of flat parts form a plurality of vertical steps along the axis direction in above-mentioned hole.

12. electromagnetic relay by claim 11, wherein, above-mentioned a plurality of flat part have variation cross section its along above-mentioned hole longitudinal length oppositely corresponding to the cross section of the variation in above-mentioned hole, so that form vertical step, thereby hold the iron core of cylindrical cross-section area insertedly with corresponding unanimity with consistent cylindrical cross-section.

13. electromagnetic relay comprises:

Limit the pedestal of base plane;

Electromagnet component on pedestal has iron core, the device of excitation winding comprises drum stand and at least one coil around iron core, a pair of pole piece is from above-mentioned core ends vertical extent, above-mentioned drum stand has a pair of end plate, and above-mentioned end plate has the device that increases the space between above-mentioned a pair of pole piece and above-mentioned at least one coil terminals;

Elongated armature can pivotally be supported in its core, so that between service position, two contacts, can do angular movement, limit an air gap in each end of armature of above-mentioned pivotal axis either side and above-mentioned one of them pole piece around the centrally-pivoted axle axis;

Permanent magnet is magnetic couplings between above-mentioned iron core and above-mentioned armature, so that produce identical magnetic pole on above-mentioned two pole pieces, and forms opposite magnetic pole at the core that is in close proximity to above-mentioned armature;

At least one movable contact spring, it is fixedly attached to the pars intermedia at armature two ends, and near each end of armature, form contact point arm, above-mentioned contact point arm band movable contact is so that according to the moving of armature, be installed in said base on corresponding fixed contact contact and disengage; With

The conductor that above-mentioned contact point arm is connected with removable contact terminal on being contained in said base.

14. by the electromagnetic relay of claim 13, wherein, the device that increases the space between load circuit and control circuit comprises a pair of end plate with a plurality of recesses.

15. electromagnetic relay comprises:

Limit the pedestal of base plane;

Electromagnet component on the pedestal has iron core, the device of excitation winding comprises drum stand and at least one coil around iron core, a pair of pole piece is from above-mentioned core ends vertical extent, above-mentioned drum stand has a pair of end plate and presses close to their contiguous above-mentioned a pair of pole piece and central plates, it is in the centre of above-mentioned a pair of end plate, and above-mentioned a pair of end plate and above-mentioned central plate have mold pressing winding terminal line within it respectively;

Elongated armature can pivotally be supported in its central part, so that can do angular movement around the centrally-pivoted axle axis between service position, two contacts, limits an air gap in each end of armature of pivotal axis either side and above-mentioned one of them pole piece;

Permanent magnet is magnetic couplings between above-mentioned iron core and above-mentioned armature, so that produce identical magnetic pole on above-mentioned two pole pieces, for forming opposite magnetic pole at the above-mentioned core that is in close proximity to armature;

At least one movable contact spring is fixedly attached to the pars intermedia at armature two ends, and near each end of armature, form contact point arm, above-mentioned contact point arm band movable contact, they move according to armature, be installed in said base on corresponding fixed contact contact and disengage; With

16. by the relay of claim 15, wherein above-mentioned at least one coil around iron core, it is connected to the above-mentioned winding terminal line that is embossed on above-mentioned a pair of end plate and the above-mentioned central plate.

17. by the relay of claim 16, wherein above-mentioned central plate has recess.

18. by the relay of claim 17, wherein at least one passes through the above-mentioned recess of above-mentioned central plate around the path of the coil of iron core.

19. by the relay of claim 18, wherein above-mentioned terminal line is with after above-mentioned at least one coil is connected, it onwards forms.

20. the method that electromagnetic component is fixed on the relay pedestal comprises:

The protuberance of drum stand is injected in the hole of pedestal;

Epoxy resin is injected the above-mentioned hole of said base;

Make epoxy resin produce flowing around above-mentioned protuberance;

Filling is formed on the space between above-mentioned protuberance and the base part, forms the periphery around above-mentioned hole; With

Above-mentioned electromagnet component of heating and pedestal solidify above-mentioned epoxy resin simultaneously in baking oven.

21. by the method for claim 20, wherein the tail tip of above-mentioned protuberance enters above-mentioned epoxy resin meniscus, so that above-mentioned epoxy resin produces flowing around above-mentioned protuberance.

22. electromagnetic relay has electromagnet component, it is fixed on the pedestal according to the method for claim 20.