FR2519798A1 - ROLLER SUPPORT WITH TERMINAL MOUNTING SYSTEM - Google Patents

Abstract

THE INVENTION RELATES TO A WINDING SUPPORT WITH A TERMINAL MOUNTING SYSTEM. IN THE SUPPORTING STRUCTURE OF THE INVENTION, A RECEPTACLE EXTENDS OVER THE SIDE OF THE HEAD FLANGE 22 OF A COIL 14 IN ORDER TO DIVIDE IT INTO AN UPPER LIP 23 AND A LOWER LIP 25. A RADIAL GROOVE 40 PRACTICED THROUGH THE UPPER LIP 23 RECEIVES AND SUPPORTS THE BRANCH 17 OF AN L-TERMINAL 16 WITH THE POSSIBILITY OF PERFORMING A ROTATION. FOOT 17 OF TERMINAL 16 MAY EXTEND RADIALLY OUTSIDE BEYOND HEAD FLANGE 22 TO CONNECT TO ONE END OF A WINDING. THE STRUCTURE OF THE INVENTION IS USED TO SUPPORT ELECTRIC WINDINGS TO BE INSTALLED IN PARTICULAR IN FUEL INJECTORS FOR INTERNAL COMBUSTION ENGINES.

Description

Winding support with terminal mounting system. The current

  The invention relates to support structures for windings and, more specifically, support structures for electric windings, these structures comprising the

  mounting terminals for these windings.

  Support structures for windings

  electric are usually called "coils".

  These coils are generally of cylindrical shape and they comprise a support hub or an organ

  winding inside which one or two outer flanges

  is or are fixed in a position

  orthogonal Electric windings are com-

  moderately wound on the support hub of the coil.

  These coils with these coils can be used in most cases where a winding

  coil is required, for example, in transformations

  tors, in relays and / or in different types of solenoid-actuated devices, a particular example of this latter application being the electromagnetic control device associated with

  certain types of fuel injection valves.

  A factor that must be taken into account in the design, construction and use of

  these coils as supporting structures for winding

  lenients is the arrangement of the terminals for connecting the winding to an external source

  of electrical energy A coil includes

  two or more terminals each of which is

  connected a certain part of the winding, usually

  one end, It is obviously desirable to establish and maintain the integrity of a good connection

  electrical and mechanical connection between each terminal and the

2 2519798

  respective part of the winding In addition, it is

  generally desirable to make this connection

  between the terminal and the winding in order to optimize

  to marry the economic factor of this operation.

  Among the various patents in which one or both of these objectives have been attempted, mention will be made of US Pat. Nos. 3,265,999 to Kessel, 3,328,736 to Keck, 3,496,505 to US Pat. names of Johannsen et al., 3,566,322 to Horbach, 3,940,722 to Fox et al and 4,145,805 to Smith. Although the various terminal structures described in these patents improve the prior art to a certain degree. however, it is still desirable to bring more

improvements.

  As a result, a main object of the

  The present invention is to provide a system for

  improved terminal strip for a coil

  to support a winding This object also includes

  create a system that simplifies assembly

  terminals and the connection of a winding end

  to these, while also serving to protect

  this winding connection against

  changes that may occur during handling.

  tion and subsequent use.

  According to the invention, a structure is

  improved support for windings, this structure

  comprising a coil having a hub and a

  headband, as well as one or more

  The spool hub is capable of supporting a coil. The coil head flange extends transversely from the hub and has an outer surface and a spool.

  inner surface, seen in the axial direction One or more

  if receptacles extend or extend transverse-

  in the head flange between the outer surface and the inner surface to define

  opposite upper and lower

  carries a first and a second part of

  The head flange has one or more mounting apertures extending outwardly from a surface and extending transversely to each other and is adapted to be electrically connected to a winding.

  respective upper of a receptacle by passing to.

  through the outer surface of the head flange, the dimensions and configuration of these openings being adapted to rotatably install a portion of the first portion of the terminal. The head flange also includes one or more locking members for the purpose of to retain in place at least a portion of the second portion of the terminal Each first portion of a terminal can be introduced into a respective mounting opening of the flange, at least a portion of the second portion being disposed in a free position. extending beyond the periphery of the flange, the first portion of the terminal being rotatable in the mounting aperture to move that portion of the second portion of its free position to the position in which

  it is retained by the locking element.

  This locking member has an edge extending from a surface defining the receptacle to prevent unblocking of the

  second part of the terminal Each element of ver-

  rusting comprises an inclined surface oriented so that the second part of the terminal can pass more easily over its rotation

  from its free position to its installed position.

  Preferably, the coil is made of a

  elastic material and the mounting apertures

  can be defined by grooves in

  the periphery of the head flange

  carry mouths narrower than the terminals so that the first part of these

  can be installed and retained.

  Each terminal may be a rigid metal member. In addition, the head flange may include, in its periphery, grooves for conductors extending at least through its inner surface and intersecting the respective receptacle to make it

  pass electrical conductors from the winding

to the respective terminals.

  In another embodiment, the

  mounting angles of the terminals may be

  circular girths closed and isolated from the peri-

  In the flange, a separate mounting groove can be made in the lower and inner surfaces of the flange, while the first part of the terminal is inserted longitudinally into the circular mounting openings via the mounting groove. In the accompanying drawings

  FIG. 1 is a view in section and in elevation

  an electromagnetically actuated fuel injector and having a support structure

  improved for windings according to llin-

  vention; Figure 2 is an isolated elevational view

  of the improved support structure for winding

  illustrated in Figure 1, Figure 3 is a view from the top of the

  support structure for windings illustrated in

  Figure 2; Figure 4 is a partial left side view of the winding support structure shown in Figure 2; Figure 5 is an isolated and enlarged view of a terminal of the winding support structure; Figure 6 is an elevational sectional view of another embodiment of the winding support structure; Figure 7 is a top view of the winding support structure shown in Figure 6;

  FIG. 8 is a sectional view taken

  line 8-8 of Figure 6; and Figure 9 is a perspective view of a

anchoring member.

  FIG. 1 is an elevation view in section of an improved support structure 10 for windings according to the invention, this structure being incorporated into an electromagnetically actuated fuel injector 12 The support structure for windings 10 consists of a annular coil 14 and two terminals 16 one of which

  only is represented in FIG.

  carries a tubular or cylindrical hub 20, as well as a head flange 22 and a base flange 24 extending transversely from the hub,

  opposite ends An electric winding

  property 18 is disposed coaxially around the hub 20 of the spool and extends axially between the flange

base 24 and the head flange 22.

  Referring briefly to the injector

  fuel 12, a fuel is introduced into the

  of the injector via an inlet lumen 30 and is selectively discharged therefrom by an opening

  31 under the selective control of a spherical valve 32.

  This spherical valve 32 is attached to a face armature.

  plates 33 and it is pushed into a position of iron-

  The excitement of the winding

  18 by the application of a potential at one or more terminals 16 takes place in known manner to electromagnetically attract the armature 33 upwards and thus open the spherical valve 32 to allow the passage of fuel from the zone The elimination of the electric potential allows the thrust spring 34 to close the valve 32 again. The recycling of a part of the fuel to a collecting tank can be ensured by a recycling outlet. 36 planned for

  the upper end of the injector 12.

  The structure will now be described in more detail.

  support for windings 10; Figures 2 to 4 illustrate the support structure for windings 10 in which the winding has been omitted, while Figure 5 illustrates a terminal as an example The coil 14 is made of a non-magnetic material, electrically insulating and somewhat such as 30% glass filled nylon The hub 20 is cylindrical or annular in shape, an axial axial flow passage extending through this hub in the embodiment used with the fuel injector 12 head flange 22 and the base flange 24 extend radially outwardly at

  from the hub 20, substantially at the opposite ends

  of the latter in order to retain the coil axially

on the hub.

  Referring also to Figure 5, terminal 16 is a rigid rod-shaped conductor

  an "L" configuration with an extended arm

  dant up and a branch extending horizon-

  The terminal 16 is advantageously made from a circular brass piece with a diameter of 1.3 mm which is bent at an appropriate angle, about 90. The outer end of the branch of the terminal is pushed back. cold to form the flattened and widened leg or foot 17 at which one end (e.g., the end 18A or 18B) of the winding 18

can be fixed with conduction.

  We will now focus on the system for mounting and housing the respective terminals 16 in the head flange 22 of the coil 14 Since the mounting systems for each of the terminals are

  virtually identical, the description of one will be

  Applicable to the other unless otherwise indicated The head flange 22 has an annular configuration and has upper and lower surfaces 23 and respectively which, in the illustrated embodiment, extend approximately 5 mm beyond

  the periphery of the hub 20, while they are spaced

  axially spaced from each other by a distance of

  Viron 4 mm Two circular angular protuberances

  spaced 26 extends upwardly about 1.25 mm from the upper surface 23 of the head flange 22 to allow

  the mounting of the two respective terminals 16 A reason

  Vertical assembly 29 extends radially outwardly from the center of each protuberance 26 passing through the periphery of the flange of

  head 22 The mounting grooves 29 extend axially

  from the top of a protrusion

  tive 26 down to a groove forming

  40 Each groove 29 is circular to its ex-

  inner radial tremity and, at this point, its dimensions are calculated so that it holds tightly a part of the vertical arm of

  the terminal 16 while allowing him to turn.

  The mouth of the groove 29 has a diameter somewhat less than that which it has inside the protuberance 26 to facilitate the maintenance

  of the terminal 16 in the latter.

  The aforementioned groove 40 forming a housing

  s 1 extends radially in and around an angular segment

  the periphery of the head flange 22 between

  the upper and lower surfaces 23 and 25 respectively

  while it is defined by surfaces

  higher and lower 42 and 36 respectively

  killed inside and substantially parallel, so that the head flange comprises an upper lip and a lower lip, the height of the housing groove 40 is sufficient to allow the thickness of the branch of the terminal 16 to pass, about 1.5 mm This groove 40 intersects

  transversely the mounting groove 29 and its

  inner lower face 36 defines the base.

  As uncle notes in Figures 2 to 4, the angular range and the radial depth of the housing groove 40 formed in the head flange 14 are sufficient to house the branch of the terminal

  16 completely inside the perimeter of the flange.

  This housing serves to protect this branch of the terminal and the connection of the winding 18 to it

  against mechanical and electrical contact

  during handling and use.

  A locking member 50 associated with each of the grooves 40 is provided to retain the branch of the terminals 16 in place within the groove.

  inside the groove 40 from one of the

  faces defining the latter to define an opposite surface preventing the branch of the terminal from emerging from the groove 40 Although, as shown, the locking member 50 extends from the inner upper surface 42, he

  could also, in addition or alternatively>

  From a lower surface 36 or from an end wall of the groove 40, a cam surface 52 (shown more clearly in FIG. 4) is provided at the end of the locking element which is the first to come into contact with the branch of terminal 16 when it is rotated

  free position in an installed position within

  groove 40 This cam surface 52

  facilitates the installation of terminal 16 in its posi-

  installed and locked inside the unit.

lock 50.

  Insulation and additional protection

  The conductors 18A, 18B of the winding are provided by grooves 60A and 60B respectively formed in the head flange 14. These conductor grooves 60A, 60B extend radially in

  the lower part of the head flange 14 in between

  With each of the grooves 60 A and 60 B, a respective conductor 18 A or 18 B may extend from the winding 18 to its point of connection on the branch of one of the grooves.

  respective terminal 16 when this branch is

  in the housing groove 40.

  The terminal 16 is first mounted in and on a coil 14 in the "free" position illustrated in broken lines in FIG.

  climb into this "free" position by pushing

  his arm through the mouth of groove 29 until he comes into the

  circle of this groove, in the center of the

  Next, the respective lead wires 18A, 18B are connected to the connecting tabs 17 of the respective terminals, after which the terminals 16 are rotated on their respective vertical axes.

  to bring them into their installed position

  the line in broken lines illustrating the respective branches In this last

  guration, it will be observed that the locking elements

  age 50 hold the respective feet of the terminals

  in their respective installed positions in the-

  they are isolated from any electrical and mechanical contact The terminal mounting system described

  above is relatively simple, economical, sustainable

  and mechanically and electrically isolated.

  The arms of the terminals 16 which extend over the

  respective protuberances, can then be connected to

  directly to an external electrical potential source In applications such as that illustrated in the fuel injector of FIG.

  1 in which the arm of a terminal must pass through

  to an additional conductive structure, it may be desirable to provide an insulation ferrule

  and / or sealing 90 to ensure the insulation

  The circular perimeter of the terminal arm

  16 forms a sealing surface with

  the ferrule 90, while also facilitating the rotation of the terminal to its installed position.

and locked.

  FIGS. 6 to 9 show another embodiment of the support structure for windings, which is indicated by the number

  reference 110 In the support structure 110 there is

  illustrated in Figures 6 to 9, the characteristics

  structures similar to those of the structure

  FIG. 10 of FIG. 2 are designated by the same reference numerals preceded by the numeral 1. Accordingly, a spool 114 has a hub 120 having a base flange 124 and a head flange.

  122 The headband has a larger surface area

  123 and a lower surface 125 A receiver

  140 extends radially inwardly from the perimeter of the flange 122 over most of the circumference of the latter defining an inner lower surface 136 and an inner top surface 142 disposed face to face as in the form 1 to 5, the receptacle 140 serves to house the branch of each of the terminals 16. The locking members 150 descend from the upper inner surface 142 on opposite sides of the head flange 122 in order to lock the respective terminals.

  116 in their installed positions and this, generally-

  as in the earlier

  pool. However, the configuration of the mounting openings

  129 Through which the arms of the terminals 16 extend longitudinally

  nally, is different from that of the embodiment of the figures. Specifically, the mounting apertures 129 are closed circles extending axially through the lip formed in the head flange 122 between the upper surface 123 and the inner top surface. The mounting apertures 129 each have a diameter that is substantially equal to or slightly greater than that of the terminal arm 116 extending therethrough to form a stable support therefor In addition to the grooves 160 provided for the

  passage of the conductive wires and extending radially

  in the lower lip of the t 8 flange 122,

  this lower lip also comprises two grooves

  res 180 extending axially through and generally

  radially or tangentially inwardly on opposite sides of the hub 120. The grooves extend inwardly from the periphery of the head flange 122 to a position where they are in vertical coincidence with the grooves of the hub.

  respective assemblies 129, while they have a

  enough to allow the passage of the diameter of the respective bo-rings 116 Therefore, to install

  a terminal 116 in its mounting aperture

  129, the arm of this terminal is generally radially inwardly moved into the groove 180 in register with the mounting aperture 129, whereupon this terminal is rotated on the axis of its arm to bring its branch into position. coincidence with the groove 180; then, the arm is pushed longitudinally upwardly through the mounting aperture 129 until the arm is disengaged from the lower lip of the head flange 122 and the terminal is then first slightly rotated. the axis of his arm in order to move the branch and the foot to an intermediate position or "free" position in which a winding conductor can be fixed to this foot and finally, it is rotated further in its installed position and locked to The interior of the receptacle 140 The branch and the foot of the terminal 116 of the embodiment of FIGS. 6 to 9 may be a little shorter than those provided for the embodiment of FIGS. 1 to 5 so that they may be brought entirely into their

installed positions.

  An anchor member 185 shown more clearly

  9 is associated with each terminal 116 and comprises a cleat-like member having a collar

  extending upwards from the lower lip

  the upper flange 122 and a head formed at the upper end of the neck A conductive wire 118 A of the winding can then extend upwardly through the groove 160 passing around the neck of the neck. the anchoring member 185 before being conveyed to the foot of the terminal 16 to which it is bound

to make contact.

  Although the invention has been illustrated and described with reference to some of its detailed embodiments, it will be appreciated by those skilled in the art that various modifications may be made both in form and in detail without

  to depart from the spirit and framework of

vention.

Claims (9)

  A support structure for windings, characterized in that it comprises: a coil having a hub and a head flange extending transversely from said hub and near a head thereof, said hub being able to support a winding; a terminal having first and second   part connected to each other and extending   versalement relative to each other, this terminal being designed to establish an electrical connection with the winding; this headband of the coil comprising   an upper surface and a lower surface   respectively axially spaced apart from each other, a receptacle extending transversely in said flange between said upper surface and said lower surface to define upper and lower surfaces opposed to the inside, as well as respective upper and lower lips, an opening mounting upwardly from said receptacle and through said upper lip of the flange, the dimensions and configuration of that opening being adapted to receive, with the possibility of rotating therein, a portion of the first part of the terminal, as well as a locking element intended to retain a section   of this first part of the terminal in a posi-   installed in the receptacle, this first portion of the terminal being insertable into the mounting opening of the flange, while the second portion is disposed in a free position extending beyond the periphery of this flange, this first part of   the terminal that can turn inside this-   mounting angle to move the aforementioned section of the second part of the free position to the installed position.   2 Support structure for windings   1, characterized in that the axis of rotation of the first portion of the terminal is   almost parallel to the center line of the hub.   3 Support structure for windings   Claim 1, characterized in that the receptacle formed in the head flange encloses the second portion of the terminal substantially entirely within the periphery of this head flange.   when it occupies this installed position.   4 Support structure for windings   Claim 3, characterized in that said receptacle is delimited by a plurality of interior surfaces, while said locking member comprises an edge extending from at least one of said interior surfaces to prevent unlocking of said interior. this second part of the terminal when it is in this position installed.   Support structure for windings according to claim 4, characterized in that   edge of the locking element   inclined face oriented so that this   part of the terminal can pass more easily when it is rotated from this free position in this installed position.   6 Support structure for windings   Claim 1, characterized in that at least the head flange of the spool is made of a resilient material, while the mounting aperture is defined by a groove formed in the periphery of this head flange; mounting groove having a mouth narrower than the first part of the terminal, so that   this first part of the terminal can be tallered and restrained.   7 Support structure for windings   claim 1, characterized in that each   that terminal is a rigid metal member.   8 Support structure for windings   1, characterized in that a plurality of terminals and a plurality of   each mounting opening is a reason for   nure in which is mounted a respective terminal.   9 Support structure for windings   Claim 3, characterized in that the head flange further comprises a conductor groove extending through at least the lip   bottom of this flange by intersecting the   tackle in order to pass electrical conductors   extending between the winding and the terminal.   A winding support structure according to claim 1 characterized in that the mounting opening is a closed circular opening isolated from the periphery of the head flange,   while the first part of the terminal is introduced   longitudinally from this receptacle of mounting.   11 support structure for windings according to claim 10, characterized in that   the lower lip of the head clamp extends   outwardly from the hub of the spool beyond the mounting aperture, the lower lip of the head flange having, in its periphery, a groove extending in coincidence with this mounting aperture, the dimensions of this groove being calculated so that the first and the second part of the terminal can go through,.