CN104599904A - Electrical device - Google Patents

Abstract

The invention relates to an electrical device (1), in particular to a relay switch for a motor vehicle. The electrical device has an at least substantially cylindrical housing (2), in which an axially movable armature (4) and an energized magnetic coil (3) for moving the armature (4) are disposed, wherein the magnetic coil (3) has a winding wire (7) wound into a plurality of radial layers coaxially with respect to the armature (3) and provided with two free wire ends (9, 10) disposed together at an axial side of the magnetic coil (3). According to the invention, a sleeve (11) accommodating the magnetic coil (3) is disposed in the housing (2), wherein the sleeve (11) has a longitudinal slit (12), through which one wire end (10) is guided.

Description

Electric device

Technical field

The present invention relates to a kind of electric device, especially for the relay switch of motor vehicle, it is columniform shell at least substantially that this electric device has, the armature that can move axially and the magnetic coil be energized for mobile armature are set in this shell, wherein said magnetic coil has winding wire and two line end freely, this winding wire is to the layer being wound into multiple radial direction relative to armature coaxially, and described line end is arranged on the axial side of magnetic coil together.

Background technology

The electric device of the type mentioned during beginning is such as known from DE 296 11 004 U1.Here armature is axially movably bearing in cylindrical or cup-shaped shell, in this shell, be also provided with the magnetic coil that can be energized coaxially relative to this armature.When assembling, this magnetic coil is pushed in shell simply vertically.Magnetic coil has at least one winding wire usually, and described winding wire reels and this had to the number of turn of regulation in the layer of multiple radial direction.This device be it is desirable for that the line end freely of winding wire is drawn from shell in the side of shell.Therefore advantageously, these line ends are arranged on an axial end portion of magnetic coil together, can draw from shell together thus.For realizing this point, be usually restricted to the magnetic coil of even level.For utilizing winding space available in shell completely, also limited when selecting line thickness or linear diameter.

It is desirable for and realize magnetomotive force high as far as possible in existing structure space.So-called magnetomotive force is construed as the product of the number of turn of electric current and magnetic coil in the sense of the present invention.This is an important amount, and it illustrates the effective power of device.For realizing high magnetomotive force, must electric current large as far as possible can be made to be guided through winding wire on the one hand, the number of turn should be large as far as possible on the other hand.Usually, when when for even level and wire diameter is constant improve magnetomotive force by two additional layers time, the external diameter of magnetic coil adds the twice of the diameter of winding wire.In order to middle step (Zwischenschritte) can also be realized, it is desirable for the number of plies that can also realize odd number.

Summary of the invention

The advantage that the electric device with the feature of claim 1 has is: it can realize the winding layers of odd number with the simple and methods of low cost.For this reason according to the present invention's regulation, arrange the sleeve pipe holding magnetic coil in the enclosure, wherein this sleeve pipe has longitudinal seam, guides a line end by this longitudinal seam.That is by this longitudinal seam in sleeve pipe for the line end led back to provides one by the path of shell, that can be cancelled the winding with wire turn by this path returns guiding.Longitudinal seam provides guidance part for the line end led back to, and it preferably forces the line end led back to be positioned at the position of regulation, and this position is favourable for the magnetic flux of magnetic coil.Compared with the solution arranging the equivalence of the groove that is guided through by the line end led back to the inner side at shell, solution of the present invention provides such advantage: manufacture and the assembling of sleeve pipe can realize with significantly low cost.

According to a kind of favourable improvement project regulation of the present invention, magnetic coil has the layer of odd number.By providing the layer of odd number, line end is positioned at the relative side of magnetic coil.By this favourable sleeve pipe, line end guides to the side at another line end place through the longitudinal seam of sleeve pipe.Longitudinal seam advantageously extends axially through sleeve pipe.Here particularly preferably described line end extends axially through the guiding of described longitudinal seam.

Particularly preferably described cover is effective can with the material manufacture of electromagnetic mode excitation.This sleeve pipe forms the magnetic loop of electric device simultaneously and performs other function on this point thus.

Sleeve pipe preferably radially leans against on shell at least substantially in outside.Specify especially, sleeve pipe leans against the inner side of shell and supporting outer thus at medial plane.The monolithic case of electric device is consisted of together with sleeve pipe shell thus.This shell self preferably more narrowly constructs with the width of sleeve pipe or the traditional shell of Thickness Ratio, makes it possible to not loss structure space and holds sleeve pipe in the enclosure.Replaced the material removed of shell by sleeve pipe self, make monolithic case obtain the mechanical property almost identical with conventional electrical device and magnetic characteristic.In addition by abutting contact, ensure the good locking of sleeve pipe on shell and optimize the characteristic also comprising the magnetic circuit of shell self especially.

Shell preferably has closed enclosure wall.Shell is stable especially thus.In addition, sleeve pipe forms a kind of groove by longitudinal seam in the inner side of monolithic case together with shell at that time, is had that the free line end led back to of the magnetic coil of odd-level is directed to be returned by this groove.Shell self preferably constructs, therefore, it is possible to realize at low cost as deep-draw part.

Accompanying drawing explanation

The present invention is described in detail below according to an embodiment.For this reason:

Fig. 1 longitudinal section shows an electric device,

Fig. 2 cross-sectional view has illustrated this electric device.

Embodiment

Fig. 1 and 2 shows electric device 1, and it is configured to the cranking-motor relay of the drive unit of motor vehicle.For this reason, the longitudinal section that Fig. 1 simplifies shows electric device 1, and the cross-sectional view of Fig. 2 simplification has illustrated electric device 1, wherein not shown armature 4 and guiding sleeve 5 in fig. 2.Illustrate only outermost layer and the line end 10 of magnetic coil 3, or rather magnetic coil 3 winding in fig. 2.

It is columnar shell 2 that electric device 1 has basic, and this shell is for holding magnetic coil 3 and armature 4.Armature 4 is arranged in the mode that can move axially in shell 2, and is such as connected with operating element at its free powder end not shown here.Here armature 4 is bearing in guiding sleeve 5 in the present embodiment, and this guiding sleeve 5 is axially directed through shell 2.Shell 2 is closed by cap member 6 on one face, and this cap member is also for locking and accommodation guiding sleeve 5.

Guiding sleeve 5 leans against the inner side of the tapered section of shell 2 with the end of away from cover element 6 radial direction.In region between this tapered section and cap member 6, magnetic coil 3 is arranged between shell 2 and guiding sleeve 5.Magnetic coil 3 has winding wire 7, and this winding wire is wound into multiple layer around carrier element with multiple circle coaxially relative to armature 4.Here specify, the number of plies of magnetic coil 3 is odd numbers.This causes, first line end 9 to be introduced from shell 2 by cap member 6 as lead-in (Zuleitung) and change wire turn into immediately in shell 2, and the second line end 10 is drawn as the side relative with cap member 6 of lead-out wire (Ableitung) at magnetic coil 3 and is guided through shell 2 vertically and do not continue to reel from last wire turn, it is drawn equally from shell 2 by lid 6.Two line ends 9 and 10 are arranged on the same axial side of magnetic coil 3 or electric device 1 thus, make it possible to electrical contact electric device 1 in a straightforward manner.

For make line end 10 as described in can be directed through shell 2, be provided with sleeve pipe 11, this sleeve pipe 11 has longitudinal seam 12, and this longitudinal seam extends axially through sleeve pipe 11.Fig. 2 shows the cross section of sleeve pipe 11 in cross for this reason.By this longitudinal seam 12, this sleeve pipe has the enclosure wall do not closed.The external diameter of sleeve pipe 11 is chosen to it substantially corresponding to the internal diameter of shell 2 in this case, and sleeve pipe 11 radial direction is leaned against on shell 2.Thus, have between the inner side of the shell 2 of line end 10 by this longitudinal seam 12 form a kind of groove at longitudinal seam 12 and Qi Nei guiding.The thickness of sleeve pipe 11 is preferably corresponding to the diameter of winding wire 7 in this case.Especially longitudinal seam 12 constructs very narrow to guide the mode of line end 10 vertically well.Such as can expect, stitch wide 12 corresponding to the diameter configuration of winding wire 7.

When assembling, magnetic coil 3 can be pushed into vertically in shell 2 as pre-arrangement together with sleeve pipe 11.Alternatively can expect, first sleeve pipe 11 be pushed in shell 2, then axially import magnetic coil 3, wherein line end 10 is just positioned at longitudinal seam 12 when importing.

The advantage that the electric device 1 of such formation has is: can the existing structure space of optimal.Particularly can obtain a large as far as possible magnetomotive force thus: the product (unit: ampere circle) of electric current and the number of turn.Which thereby enhance the effective power of relay switch.

Typically the wire diameter of regulation winding wire is classified as 0.1mm.When being restricted to even level, when the number of plies is 10 and wire diameter is d=1mm, if change to 12 layers for improving magnetomotive force while maintenance even level, this is such as the step representing 2mm radius.

By the favourable design of electric device 1, also can realize now the number of plies of odd number, wherein lead-in and lead-out wire, that is line end 9 and 10, continue to draw from shell 2 in the same side of device 1.Like this, magnetomotive force can when winding current equally large or smaller a little time and such as increase by 10% when structure space remains unchanged.The amount that the internal diameter of shell 2 increases is preferably the amount that sleeve pipe 11 occupies, and makes sleeve pipe 11 replace this part of shell 2.Therefore the monolithic case of sleeve pipe 11 constituent apparatus 1 together with shell 2, it has the characteristic identical with traditional shell.It also can realize as follows especially: sleeve pipe 11 and the identical material manufacture of shell 2.Sleeve pipe 11 is preferably with can, with the material manufacture of electromagnetic mode excitation, make it form the magnetic loop of magnetic coil 3 simultaneously.

Therefore total shell two pieces type ground structure, wherein the shell 2 of outside is preferably configured as the deep-draw part of low cost.By putting into the longitudinal seam of sleeve pipe 11 of shell 2, winding line end 10 can lead back to the side of cap member 6 at low cost when odd-level.Can be used the wire diameter of standard by favourable design, these wire diameters only can provide with discrete rank value usually, although wherein improve magnetomotive force by the number of plies is increased to odd number, manufacturing cost still keeps very low.

Claims (7)

1. electric device (1), especially for the relay switch of motor vehicle, this electric device has and is at least essentially columnar shell (2), the armature (4) that can move axially and the magnetic coil (3) be energized for mobile described armature (4) is provided with in this shell, wherein said magnetic coil (3) has at least one winding wire (7), this winding wire is wound into the layer of multiple radial direction coaxially relative to armature (3), and described magnetic coil has two line ends (9 freely, 10), described line end is arranged on an axial side of described magnetic coil (3) together, it is characterized in that, the sleeve pipe (11) holding described magnetic coil (3) is set in described shell (2), wherein said sleeve pipe (11) has longitudinal seam (12), a line end (10) is guided by this longitudinal seam.

2. electric device according to claim 1, is characterized in that, arranges the layer of odd number.

3. according to the electric device one of the claims Suo Shu, it is characterized in that, described longitudinal seam (12) extends axially through described sleeve pipe (11).

4. according to the electric device one of the claims Suo Shu, it is characterized in that, described line end (10) is guided through described longitudinal seam (12) at least substantially vertically.

5. according to the electric device one of the claims Suo Shu, it is characterized in that, described sleeve pipe (11) the material manufacture that can encourage with electromagnetic mode.

6. according to the electric device one of the claims Suo Shu, it is characterized in that, described sleeve pipe (11) radially leans against on described shell (2) at least substantially in outside.

7. according to the electric device one of the claims Suo Shu, it is characterized in that, described shell (2) has closed enclosure wall.