FR2536237A1 - SPACER FOR CONNECTING PLATES AND STRUCTURE OBTAINED BY ASSEMBLY WITH SUCH SPACERS - Google Patents

Abstract

THE INVENTION CONCERNS A SPACER FOR CONNECTION PLATES AND A STRUCTURE OBTAINED BY ASSEMBLY WITH SUCH SPACERS. SUCH A SPACER SERVING TO KEEP TWO CONNECTION PLATES SPACED, INCLUDES AN UPPER SUPPORT 1 EQUIPPED WITH A COLLAR 4 DELIMING A COUPLING HOLE 5, A LOWER SUPPORT 2 OPPOSITE THE PREVIOUS AND SEVERAL SUPPORTS 3 SPACERS THE TWO SUPPORTS AS WELL AS AN ELASTIC COUPLING BODY 10 INCLUDING SEVERAL CONNECTING BODIES AND A PUSHING BODY 6 FORMING AN ELASTIC PLATE, ALL OF THE COMPONENT ELEMENTS BEING UNITED BY A SINGLE HOLDER. APPLICATION IN PARTICULAR TO THE SPACING OF PRINTED CIRCUIT BOARDS.

Description

The present invention relates to an improvement

  to a spacer for connection pads such

  printed circuit boards and for maintaining a suitable space between a plurality of terminal boards and for securing the latter when using a plurality of terminal boards or a plurality of printed circuit boards in the stacked state, and also relates to a structure obtained by

  assembly from such elements.

  Until now, in electronic devices

  when mounting one or more connection pads on a chassis or mounting one or

  several other pads of connection on a plaquet-

  connection, we use support

  are fixed between the connecting plates and a frame

  sis or between the connecting plates, using screws, so that it is necessary to implement a number of processes for the operations of

  connection boards, and there are also

  a disadvantage in that the cost of implementation is high when assembling parts when

  a large quantity of such pieces are used.

  As a refinement to overcome these drawbacks, a spacer of the type described in US Patent No. 3,836,703 which is integrally formed using a synthetic resin has been proposed. can be attached to a frame or a plate of

  connection in a single push action, using

  the elasticity of the synthetic resin and

  reading the fastening of said spacer by clutch-

abrupt floor.

  Although there are certainly some

  to reduce the number of operational phases

  mounting costs and the cost of these

  c 536237 compared with the spacer described in the cited patent with respect to a spacer for which it is used

  screws and support members, a disadvantage

  side also in the fact that said spacer pos-

  has a low mechanical strength with respect to a load applied to the wafer in a horizontal direction or with respect to an applied load

  in a direction of torsion, because of its

  rectangular, with supports or substrates

  facing each other, two lateral plates

  immobilizing or bracing the supports or sub-

  strats in order to maintain the space between the connecting plates, which has the effect of

  the support organs tend to give way or collapse

  be under the simple action of a weak charge which

is applied.

  Therefore, an object of the present invention is to provide a spacer for connection pads, in which the disadvantages of these

  types of spacers in accordance with the prior art de-

  written above can be solved.

  Another object of the present invention is to provide a spacer made of synthetic resin

  and intended for connection boards, for

  which several support members are arranged

  radially from the center, while sub-

  strata or desupports located reciprocally

  are spaced apart by the support members so as to maintain the spacing between said

platelets.

  Another object of the present invention is to provide a spacer in which the mechanical resistance against a load applied to the connection boards or to the printed circuit boards intended to be mounted in a horizontal position and

  the mechanical resistance against the load applied

  torsion direction are extremely high.

  Another object of the present invention is to provide a spacer comprising a push member forming an elastic plate in the form of are and an elastic coupling member in which it is possible to fix

  platelets using elastic forces.

  ticks applied in ascending, descending directions of the pushing member forming plate

  bow elastic and another elastic force

  tick applied on the right and to the left of 1 l

elastic coupling member.

  Another object of the present invention is to

  provide a structure obtained by assembling

  trunks and connection pads or

  printed circuit boards, in which several

  connection pads or said circuit boards

  baked goods can be stacked successively

  thanks to the mounting of several spacers

to the present invention.

  According to the present invention, one of the characteristics of the spacer for fixing the connection plate lies in the fact that it comprises a substrate or upper support, at the center of which is formed a coupling hole, a

  substrate or lower or base support that is dis-

  placed opposite the upper support, and several support members immobilizing or bracing the

  upper and lower brackets so that

  between them a space, with the result that the mechanical stress vis-à-vis applied loads

  the spacer is reinforced, which allows the

  tretely not to yield or collapse

  if these important charges are applied to him, contrary to what is usually

2536237-

this type of spacers.

  Other features and benefits of the

  present invention will emerge from the description given

  hereinafter referenced to the accompanying drawings, in which:

  FIG. 1 is an elevational view of the

  trestle according to one embodiment of the present

  the invention; Figure 2 is a side elevational view

  of the spacer according to the present invention,

  partly cutaway; Figure 3 is a plan view of the spacer according to the present invention;

  FIG. 4 is a view from below of the spacer

according to the present invention;

  FIG. 5 is an elevational view of the strut

  according to the present invention and connection boards or printed circuit boards, in the assembled state; and FIG. 6 is a cross-sectional view

  the spacer taken along line A-A on the

gure 1.

  Referring to FIGS. 1, 2, 3 and 4, one embodiment of a spacer according to the present invention essentially comprises a substrate

  or upper support 1 and a substrate or support

  2, which are placed in higher positions and

  less than a predetermined reciprocal distance

  a number of supporting bodies 3

  in the form of one mlaque (in this

  four support members), which immobilize or brace the upper support 1 and the lower support 2, a collar portion 4, a support member,

  push 6 forming an elastic plate having a

  arc or curved in cross-section, an organ

253623?

  elastic coupling 10 having thin bodies

  of liaison 9 who also each have the

me a little bow.

  The flange portion 4 formed on the upper face of the upper support 1 must be inserted into a mounting hole in the connection board or in the printed circuit board to be mounted on the support. A coupling hole 5, of which

  the details are shown in FIG.

  ge in the center of the neck portion 4

  surrounded by support organs is clearly

  greater than the diameter of the coupling hole 5 and possesses

  much larger than the diameter of the organ

  of elastic coupling 10 so as not to restrict

the extension of the latter.

  The elastic plate-forming pushing member 6 in the form of an arc is generally provided in the central part of the bottom of the lower substrate 2. Likewise, several notches 7 in the form of holes are formed on the left and on the right. of the organ

  of the pushing member forming an elastic plate

  6 and the support of the lower substrate 20 The foot of the pushing member 6 is made thin

to be easily flexible.

  The elastic coupling member 6 as a whole has an outer shape resembling the head of a missile or a shape similar to the tip

  of an arrow and is made of synthetic resin pos-

  seducing good elasticity so as to allow easy insertion of the head into the mounting hole

  of the connection plate or circuit board

  In the center of the elastic coupling member 10 there is arranged a connecting plate 8 which is quite thick and is made in one piece.

  with said elastic coupling member 10 in

  synthetic sine The right and left parts of the elastic coupling member 10 are provided

  each of a connecting member 9 of curved shape

  All the constituent elements described above are made in one piece in the form of a single

the synthetic resin part.

  Figure 5 shows the spacer according to

  invention assembled between two platelets of

  nexion or two printed circuit boards A and B.

  Mounting the spacer on the circuit boards

  printed cooking can be achieved as follows: all

  firstly, the elastic coupling member is introduced

  10 of the spacer according to the present invention, by exerting pressure, within the mounting hole 11 in the printed circuit board A. However in this case, since the diameter of the mounting hole 11 is slightly less than

  maximum diameter R of the elastic coupling member

  as shown in FIG. 4, the ends

  left and right of the coupling member

  elastically in the position marked on the

  5 are respectively inflected towards the inner face of said coupling member, as a result of the insertion under pressure, while the two edges of the elastic plate 6 are respectively bent towards the upper face of said plate It results

  that the printed circuit board A is fixed elastically

  tically between the end parts or the edges

  left and right of the organ of

  In this case, since the right and left end portions of the resilient coupling member return to the lateral position outwardly of said coupling member under the effect of the force elastic member 1 thin connecting member 9 shown in Figure 1,

  the elastic fastening of the printed circuit board

  A can be done in an extremely safe way.

  Then, after insertion or assembly of the ele-

  collar 4 (see Figures 1 and 2) of the

  toise in a mounting hole 12 of another wafer

  printed circuit board B, it is possible to insert in the same manner

  re, exerting pressure, the spacer of a second stage, having the elements 2 ', 3', 6 ', etc., in the mounting hole 12 of the second printed circuit board B Then the body of the elastic coupling 10 'of the second spacer may be resiliently fastened in the coupling hole S of the first stage spacer, while the plate-forming member

  elastic 6 'pushes back the upper surface of the

  printed circuit board B, by fixing or blocking

  Thus, in this way, several

  connection pads or several circuit boards

  The printed bake can be stacked successively by mounting a plurality of spacers according to the present invention with respective spaces.

  appropriate measures determined by the actual length of

used.

  Finally, when setting the last

  printed circuit board, a cap is used for the spacer, comprising only the push member forming the elastic plate 6 and the coupling member

  elastic strap 10 for fixing or blocking the circuit board.

cooked printed from the final floor.

  As described previously, the

  measuring board for fixing the connecting plates or the printed circuit boards is carried out

  in such a way that the spacer

  a substrate or upper support in the center of which

  is provided with a coupling hole, an inferior substrate

  which is mounted opposite the substrate or sup-

2536237.

  upper port, several support members

  said substrate or upper and lower support so as to maintain a gap therebetween, with the result that the mechanical resistance to the load applied to the connecting plates or

  printed circuit boards, if mounted,

  in a horizontal direction and / or against the load

  applied in a direction of torsion is

  high, which allows the spacer according to the present invention not to yield or collapse easily even if these important loads are

  applied, contrary to what usually happens

  for this type of struts.

  that the right and left edges of the coupling member

  elastically made in a shape resembling a missile head, as shown in the drawings and described in the foregoing with respect to the form

  in accordance with the present invention, are

  coupled or meshing with the mounting hole of a printed circuit board via the thin arc-shaped coupling members, a secure snap-fastening of

  the spacer in accordance with the present invention

  is resistant to vibrations which are

  platelets, as well as with regard to

  repeated, which makes it difficult to

  or detachment of the spacer (s).

  In the previous embodiment according to

  the present invention, although the coupling member

  elasticity is represented in a form similar to

  blistering at the head of a missile, it can take

  What other similar form can be used?

  read alone without the connecting member 9.

  Ez addition, in the spacer according to this

  invention, even if the thickness of the con-

2 536237

  nexion or printed circuit boards may

  To a certain extent, it is possible to fix the plates firmly using the elastic force

  applied in ascending and descending directions

  te of the push member forming an elastic plate

  arc shape and another elastic force applied

  on the right and left of the

elastic coupling.

  Although the embodiment has been described

  In its preferred embodiments, it is understood that

  that the terms used are of a purely descriptive nature, without any limiting character, and that various modifications can be made to the object

  of the invention without departing from the scope of the latter.

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Claims (5)

  1 Spacer for connection pads,   characterized in that it comprises a sup-   (1) having a first part forming a collar   (4) at the center of which is provided a coupling hole (5) which passes through said upper support, a lower support (2) located opposite the support;   several support members (3)   these upper and lower supports in such a way   to maintain between them a space, an organ of   resilient pleat (10) comprising a plurality of connecting members and a connecting plate, and a pushing member (6) forming an elastic plate and disposed between a face of the upper support and one end portion   said connecting members and said connecting plate   its, all the elements of construction including the upper support, the lower support, all the support members and the push member forming elastic plate being made in one piece under the shape of a single piece.   2 spacer for connection pads according to claim 1, characterized in that the upper support (1) and the lower support (2) respectively have a circular shape, the diameter of the upper support being greater than that of the lower support. 3 spacer for connection plates according to claim 1, characterized in that all of said elements made in one piece in the form of   of a single piece are made of a synthetic resin   tick. 4 Spacer for connection pads according to   claim 1, characterized in that said organization   An elastic coupling (10) has the shape of an arrowhead or a head similar to a missile head Spacer for connection pads according to   claim 1, characterized in that the space   The interior surrounded by the support members is significantly greater than the diameter of the coupling hole (5). 6 spacer for connection plates according to claim 1, characterized in that the push member (6) forming an elastic plate has an arcuate cross section so as to apply, under the effect of its elasticity, a force locking firmly to a connection board, when said member is mounted. Connection board spacer according to claim 1, characterized in that hole-like notches (7) are provided on the right side and the left side of a connecting member between   the push member forming an elastic plate and a   this of the inner support, and that the foot of the push member forming the elastic plate is made of-being   relatively thin so as to be flexible.   Connection pad spacer according to claim 1, characterized in that the diameter of the coupling hole (5) in the forming part   collar is slightly smaller than the maximum diameter of   said elastic coupling member so as to allow   inserting the head-shaped part (10 ')   arrow of a second spacer in the coupling hole-   (5) of a first spacer, via a connection pad mounting hole to be mounted, when a plurality of connection pads are are stacked.   9 Assembled structure comprising several   tretches according to claim 1, and several   connection pads or several printed circuit boards, characterized in that a first connection board (A) carries a mounting hole (11), the diameter of which is slightly greater than that   of the neck portion (4) of a second plate-   connection (B) of the same type as the first   connecting stud and having the same mounting hole (11 '), a first spacer (20) is coupled between the first and second connecting plates and having a portion (10) resembling an arrowhead is introduced. in the mounting hole (11)   of the first connection board (A), that the   collar portion (4) of the first spacer is inserted into the mounting hole (11 ') of   the second connection board (B) and that a second   of spacer (20 ') is introduced, by its part (10')   resembling an arrowhead, in the access hole   coupling (5) of the first spacer through   of the mounting hole (11 ') of the second plate- te connection (B).   11 assembled structure according to claim 10, characterized in that said set of platelets   connection or printed circuit boards   takes N platelets (N = 2,3,4 k) that are stacked   with the use of a set of (N-1) spacers.