FR2611264A1 - PROXIMITY DETECTOR WITH AN ADJUSTABLE HEAD - Google Patents

Abstract

A DETECTOR HEAD 2 OF GENERALLY CUBIC SHAPE CAN BE POSITIONED ON A HOUSING 1 OF YOUR CHOICE IN FRONT OR LATERAL ORIENTATION OF ITS DETECTOR FACE 3. HEAD 2 IS EQUIPPED WITH RETAINING CONFORMATIONS 42, 44 LAYOUT IN HOLLOW SUMMITS 32, 34, 36 , 37 OF THIS. POSITIONING AND LOCKING PARTS 7, 8 HAVE HOOKS 22 PROJECTING TOWARDS THE DETECTOR HEAD 2 ALONG LONGITUDINAL EDGES 19, 21 OF THE DETECTOR. THE HITCHES 22 ARE IN SERVICE IN EACH OF THE POSSIBLE ORIENTATIONS IN CONNECTION WITH THE RETAINING CONFORMATIONS 42, 44 OF THE FOUR ADJACENT SUMMITS OF THE DETECTOR HEAD 2. USE SO THAT THE FIXING MEANS OF THE DETECTOR HEAD REDUCE THE LEAST POSSIBLE L 'SPACE AVAILABLE IN THE HEAD.

Description

The present invention relates to a proximity sensor comprising two

  elements one of which is a housing and the other a sensor head of generally cubic shape that can be positioned on the housing in several orientations to choose including a front orientation in which a detector face of the head is turned & the opposite of the housing , and lateral orientations in which the detector face extends parallel to a longitudinal axis of the detector, the detector further comprising anchoring means which are attached to one of the two elements, and which, for fixing the head, are, in each aforementioned orientation, retained by cooperation of two positioning members and

  locking set in service & the other said elements.

  15. Such switches, mainly used when it is necessary to know the position of a moving metal part or object, can be fixed on a support having, relative to the displacement of this object, one of, for example, five orientations. to cover with one type of equipment

  majority of possible installation cases.

  According to the German utility model 72,151, a detector of the kind indicated at the beginning is known in which the anchoring means consist of a tenon carried centrally by the face of the housing intended to receive the detector head. This post has a square section that expands from the base of the tenon to its free end. One of the positioning members is constituted by conformations arranged in a recess that presents the head along one of its edges. These conformations comprise two recesses of which one or the other, depending on whether the head is in frontal or lateral orientation, is

  able to receive laterally one half of the tenon.

  The other half of the post is received in a corresponding recess of the other post-positioning member which is

screwed on the detector head.

  This device has the disadvantage that the different recesses made in the detector head to allow the different positions on the post significantly increase the space available in the detector head. In addition, the detector head must comprise two sets of screw holes for fixing the locking member, respectively when the head is in frontal or lateral orientation. The need to provide these holes, as well as the complexity of the shape of the recesses to be made, led to thicken the material of the detector head all around the recessed region. This

  further reduces the space available in the tent.

  But the difficulty of finding a compromise between robustness and interior volume of this type of device takes

  currently a particular acuity.

  On the one hand, the trend is to increase the useful range of the detectors by means of large-diameter windings and magnetizable pots. On the other hand the improvement of the technical quality passes by the integration in the detecting hole, of all or part

  electronic components associated with the windings.

  The object of the invention is thus, in an apparatus of the type indicated at the beginning, to increase the volume available inside the detector head so as to accommodate a coil of large diameter, and many

  associated electronic components.

  According to the invention, the detector is characterized in that the anchoring members are retaining conformations arranged in recessed peaks of the detector head, and in that the positioning and locking members comprise projecting fastening members. towards the detector head along longitudinal arcs of the detector, these fastening elements being

26 1 1 2 6 4

  in service engaged with restraint conformations

adjacent to the detector head.

  Thus, the head can be hollowed out only at its summits. even in some of them only. Such recesses have only a negligible effect on the volume available inside the head. Indeed, the interior space near the vertices of the cube is anyway

  difficult to use to house components.

  Other peculiarities and advantages of

  the invention will become apparent from the description below.

  In the accompanying drawings, given by way of non-limiting example: FIG. 1 is an exploded perspective view of the detector according to the invention, with tearing of the housing, when the head is in frontal orientation; - Figure 2 is a perspective view along the arrow II of Figure 1; Figure 3 is a view along the arrow III of Figure 2; FIG. 4 is a perspective view of the positioning and locking members in place on the detector casing; FIG. 5 is a side elevational view of the detector head along arrow II of FIG. 1; FIG. 6 is a perspective view of the detector, in the assembled state, with the head in lateral orientation; - Figures 7 and 8 are sectional views along the lines VII-VII and VIII-VIII respectively of Figure 6; and FIG. 9 is a perspective view of a variant of the invention, in the assembled state, the head being

in lateral orientation.

  The detector comprises a parallelepipedal body 1 having a longitudinal axis ZZ and perpendicular to

this axis, a square section.

  The detector further comprises a detector head 2 having the general shape of a cube whose arfte is equal to the category of the square section of the housing 1. The detector head 2 has a sensitive face 3, which is the one through which propagates an electromagnetic beam symbolized at 4, generated by a winding and / or cylindrical internal cylinders not shown, whose axis is generally coincident with that of the beam 4. The detector head 2 also contains an electronics associated with

  these means generating beams.

  The components contained in the head 2 are connected to the casing I by a flexible cord 6. The casing essentially contains a connector and is also used to

  fixing the detector on any suitable support.

  Since this support can be located in a highly variable manner with respect to the path of the objects whose passage is to be detected, the detector head 2 can be associated with the housing 1 in five different orientations, namely a frontal orientation (FIGS. 1, 2, 5 & 8) in which the detector face 3 is facing the opposite of the casing 1, and four lateral orientations in each of which the detector face 3 extends parallel to the longitudinal axis ZZ in the extension of one of the longitudinal faces of the box 1 (orientation shown in

  Figure 9 in the case of an alternative embodiment).

  For the mounting of the head 2 in its different orientations, the detector comprises two positioning and locking members 7, 8 which, in use are joined to each other by a joint surface 9 of each

two.

  In this state of joining (FIG. 4) the joint surfaces 9 extend in a plane passing through the axis ZZ and by a median of the square section of the casing 1. The positioning member 7 is fixed on one face square planar front 11 of the housing 1, perpendicular to the axis ZZ, by two screws 12 screwed from a face of the member 7 opposite the housing 1. Screws 13 passing through the member 8 perpendicularly to the surface 9. and in particular ZZ axis, are screwed into threaded holes 14 of the face 9 of the member 7 so as to clamp the faces 9 of the members 7 and 8 respectively when the members 7 and 8 are associated with the housing 1 (Figure 4), they thus form for the detector head 2 a sole having a flat surface 16 base square which exactly overlaps the front surface 11 of the housing 1, and four side faces 17 which are in line with the side faces 18 of the housing 1. The faces 17 of the sole 7, 8 are separated by artes 19 located in the extension of the artests

longitudinal 21 of the housing 1.

  Along each edge 19, the sole 7, 8 is extended, in the opposite direction to the housing 1, by a hook 22 comprising two bearing walls 23 forming between them a right angle and extending on either side of the associated side, and a hooking wall 24. On the convex side of the angle they form between them, the walls 23 have square planar faces 26 which are

  extensions of the adjacent faces 17 of the sole 7, 8.

  The wall 24 is flat, adjacent to the end edges of the walls 23, and extends perpendicularly to the axis ZZ of the concave side of the angle formed between the walls 23. The attachment wall 24 has a straight free edge 27, forming a 45th bevel between the inner faces of the two wings 23 associated. Between the hooks 22, the sole 7, 8 has, opposite its base face 16, bearing areas 29, 31,

  belonging to a common plane perpendicular to the ZZ axis.

  These bearing areas 29, 31 are intended to be in contact with one of the cube faces of the detector head 2 when the hooks 22 are engaged with means

  anchors provided on the detector head 2.

  As shown in particular in FIG. 1, these anchoring means are retaining conformations

  arranged in hollowed out peaks of the detector head 2.

  More particularly, the detector head 2 comprises two recessed peaks 32 at both ends of an edge 33 adjacent to the detector face 3, two recessed peaks 34 at both ends of the edge which is diagonally opposite to the edge 33, and two recessed peaks 36, 37 which, like the vertices 34, are adjacent to the face 39 of the head 2 opposite to the detector face 3. The last two vertices 38, adjacent to the detector face 3, have

  the usual form of the vertices of a cube.

  When the head 2 has its frontal orientation <FIGS. I to 8), the face 39 is in contact with the areas

  29, 31 of the sole 7, 8, and the two vertices 34.

  the summit 36 and the summit 37 which are at the four corners of

  this face are engaged with the hooks 22.

  At each vertex 34, the two faces adjacent to this vertex and perpendicular to the face 39 have a square relief 41 whose side and depth substantially correspond to the side, and to the thickness of each carrier wall 23 of each hook 22. immediate vicinity of the edge of these offsets which is opposite the face 39, the depth of recess is locally increased

  by a notch 42 overlapping the two offsets 41.

  The notch 42 has a width (measured in the direction of the height in FIG. 3) corresponding to the thickness of the hooking wall 24 of the hooks 22. The bottom 43 of the notch 42 is bevelled at 45 relatively at both sides of the cube presenting the offsets 41. Thus, the two offsets 41 and the notch 42 together form at each of the vertices 34 a recess in which can exactly fit one of the two hooks 22 when the

  face 39 is supported on the sole 7, 8.

  The notch 42 is said to be "undercut" insofar as it remains between it and the face 39 supported 9 uopioa np Jinan6uot el a ^ TiadssJ 6 uTor ap ame + Ans. nal suep a; nel ap unla pie6as ua sanbTjpuTlAn-xwas sqUawapT ^ a Sú xnap la ++ a am V) uequasgJd 8) a Lueue6Jo sal Jed quawaquioFuom GWJo * Isa Tanbal '<t aJn6 +) Bb 4rTnPUoa al la uwawapT ^ A, ed; uessed ua T.aF53oq al juiotaJ 9 uopio3 al 'T JaT; 3oq al Jns azeld ua awiw-alla' 8 6L allawas el ins ameld ua; sa z azTd3za4p asj8el anbsol 0oc B '6L allawas el 4uesJa ^ eJA ZZ axep 8b 4Tnpuom aeqw 'zZ qaqmoJm anbe4m ap JTxJed e' inb Zt juawapT ^ q a Jed sajeds luos 1ú '6Z Tndde, p SaJTe sal 8 tL alIawa5s e JnS aqna np anbTJo9q4 lawwos np a4moJd snId el uox6T es suep 9u qawwos np b aqessoq als ueTinpZ gb aTelIn6ueTJl neasTq a sJA ^ ej4 ez aTJa4p a4 el ap lJds 9.uopJoo al! In the world of aluow al awwo3 a6elqwassel janboIlq Jnod ameld ua sasTw quos LT ST ^ sal sindsg4TmgJd a; enb sal Twjed sajqT [s93saJ slawwos xnap sal ins zz sla4mon xnap sas ap aTiioa Oz ameld ua asTw maTe 4T JaTxSoq al; az aqg el aeua u J9suT his 8 ee6 & ol 'ronb ap a3Tns el ee L6e6Dol V s9T = ucjuo s 9u a' sa hiswwos5 aJqenb sal TwJed; uawwajg ++ TpuT sTsTo43 sluaieEpe s4awwos xnap sFnd jsaT3loq ne xxT + pJoqep his Zée6Jo, ! & a6eluow am JasTlefg Jnod ST Jais3oq not zas4 el; uawapT6TJ axT + Tnb am 'zz; aq4aoJ unp fZ a6e4moa3e ,, p ToJed to a Jed sgdnooo unme4m luos 6L soul + el ap s9pT ^ A slawwos asJrenb xne sanlhTs Zb sa4 = omua ailenb sa! Ale; + + + + ale ale ((((((((((((((((((((((((((((((((((((((((((ú ú ú ú ú ú ú ú ú ú ú ú ú ú ú ú ú Jed gutstp e uo 'uoaTdTasap el ap aJnaTJgln geleJe el Jnod esTo. A3nol) úswwo sp sajeos sap STe iTqed sal lualuasqAd ú the 9ú slawwos sal iT ajn6zT el asuow al awwo3 S zz axis and 4uawalgllejed ani.axa uoTpeJ4 aidwis Jed z a43 el ap a6equowgp al quanbgsuo = jed; ueqmgdwa 3a bZ a6eqmoAmep Tojed el snos 49uow qeqg <1; It is expected that there will be a total of 4 Aliawas el ailido t9ztL9z to match the length of this route.

  in addition to a low overlength.

  In frontal orientation, the angular position of the head 2 about the axis ZZ relative to the housing 1 may be any of the four possible angular positions. In lateral orientation, the head 2 is supported on the support surfaces 29 and 31 of the sole 6, 7 by its face 49 having at its vertices the two vertices 32, the vertex

36 and the summit 37.

  To allow this assembly, the vertices 36 and 37 each have in addition to the recess conformations already mentioned, a square relief 51 of the surface 39, and a notch 52 overlapping the detunes 40 and 51 (see

  Figure 2 for the recessed top 36).

  Thus, when the face 49 is pressed against the areas 29 and 31 of the sole 7, 8, the vertices 36 and 37 are capable of receiving in precise interlocking each a hook 22 whose carrier walls 23 are respectively housed in the reliefs 40 and 51, while the attachment wall 24 occupies the notch 52. The dimensions of the relief 51 and the notch 52 have, with respect to the dimensions of the walls 23 and 24 of the hooks 22, the same features as the reliefs 40 and 41, and

notches 42 respectively.

  The vertices 32 are the symmetries of the vertices 34 with respect to a diagonal plane PP (FIG. 5) of the head 2, which is parallel to the two arches whose ends are constituted by the vertices 32 and 34, and passes between

  these, that is to say by the vertices 36, 37, 38.

  In other words, each vertex 32 has on the faces that are adjacent to it and perpendicular to the face 49, two square offsets 51, and a notch 52 overlapping these misalignments 51 at their opposite edge to the

face 49.

  Thus, in lateral orientation of the head 2. the four hooks 22 are housed in the six offsets 51 and the two offsets 40, and in the four notches 52, in much the same way as they were housed in the six offsets 41 and the two detachments 40, and the four notches 42 in the case of the frontal orientation. Thus, the square offsets 40 are fully occupied by square wings 23 on the same side, in all

  the orientations of the head 2 with respect to the casing 1.

  In all orientations, the vertices 36 and 37 are engaged with the hooks 22. In this way, the cord 6 always leaves the head 2 behind one of the hooks 22 and can thus be housed in the sole 7, 8 of

the way described above.

  Each vertex 32, 36 or 37 being compatible indifferently with one or the other of the hooks 22, all identical, the head 2 is given the lateral orientation chosen from among the four possible ones by suitably orienting the latter around the axis. ZZ by

  report to the organ 7 before setting up the organ 8.

  As can be seen in particular in FIG. 5, the plane PP is a plane of symmetry not only for the vertices 32 with respect to the vertices 34, but also for the whole of the geometry of the detector head 2, and in particular for the conformations of

holding of vertices 36 and 37.

  In the mounted state (FIG. 6) the faces 17 of the sole 7, 8 and the surfaces 26 of the hooks 22 are in plane continuity with the lateral faces 18 of the casing 1 and the faces of the cube being in the lateral position, according to FIG. orientation adjustment performed. Similarly, the edges 19 of the sole 7, 8 contribute to constituting, for the entire detector, longitudinal straight rectilinear edges, with the edges 21 of the housing 1 and

some of the heads of the head 2.

  In the embodiment of FIG. 9, the casing 1 comprises a body 61 and a cover 62. The positioning and locking member 8 is an integral part of the cover 62. The positioning and locking member 7 is an integral part of the 61. The positioning and the selective orientation of the detector head 2, which is unchanged with respect to that of FIGS. 1 & 8, is achieved by prior separation of the body 61 and the cover 62 of the housing 1. Screws 63 allow tighten the cover 62

on the body 61.

  The mixed line 64 illustrates that the positioning and locking member 7 could be made separate from the body 61 while the member 8 is as previously integral part of the cover 62, and conversely the mixed line 66 illustrates that the body 8 could be realized separate from the cover 62 while

  the organ 7 would be an integral part of the body 61.

  Of course, if the member 7 is separated from the body 61 while the member 8 is separated from the cover 62, there is substantially the embodiment of FIGS.

at 8.

  In the examples shown in FIGS. 1 to 9, the positioning and locking members comprise altogether four hooks 22. But there could only be

  two diagonally opposite hooks, or three hooks.

  If there were only two hooks, it would be enough for a single hollow top 34, at one of the ends of the diagonally opposite section at item 33. And if one were satisfied with two lateral orientations shifted by 1800, it would also be possible to remove the hollow top

  37 and the top 32 diagonally opposite the top 37.

  Instead of forming a sole between casing 1 and head 2, the positioning and locking members could be attached laterally in recesses.

of the case 1.

  Of course, when we talk about possible suppression of hollowed out peaks, it is about the replacement of

2 6 1 1 2 6 4

  these by vertices such as for example the vertices 38

examples shown.

26 1 1 2 6 4

Claims (17)

  1. Proximity detector comprising two elements (1, 2), one of which is a box (1) and the other is a sensor head (2) of generally cubic shape that can be positioned on the housing (1) in several orientations optionally comprising a frontal orientation in which a detector face (3) of the head (2) is facing the opposite of the casing (1), and lateral orientations in which the detector face (3) extends parallel to a longitudinal axis (ZZ) of the detector, the detector further comprising anchoring means (32, 34, 36, 37) which are attached to one of the two elements (1, 2) and which, for fixing the head (2) of the casing (1), are, in each aforementioned orientation, retained by cooperation of two positioning and locking members (7, 8) fixed in service & the other of said elements (1, 2), characterized in that that the anchoring means are retaining conformations (42, 44) arranged in hollowed out peaks ( 32, 34, 36, 37) of the detector head (2), and in that the positioning and locking members (7, 8) comprise hooking members (22) projecting towards the detector head (2) on the along longitudinal edges (19, 21) of the detector, these latching members (22) being operative in engagement with the adjacent retaining conformations (42, 44) of the head detector (2).   2. Detector according to claim 1, characterized in that the recessed peaks comprise four vertices (32, 36, 37) adjacent to one face (49) of the head adjacent to the sensitive face (3), and at least one other vertex (34) a face (39) of the head (2) opposite the sensitive face (3).   3. Detector according to claim 1, characterized in that the recessed peaks comprise four vertices (32, 34) at the ends of two diagonally opposite edges (33) of the detector head (2), and in that 13 2611264   that the retaining conformations of these four vertices are two by two symmetrical with respect to a diagonal plane (PP)   passing between these two artes! parallel to these.   4. Detector according to claim 3, characterized in that the recessed peaks further comprise two vertices (36, 37) situated on the diagonal plane (PP) and spaced apart from the detector face, and in that each of these two vertices has retaining conformations (40, 41, 51, 42, 52) symmetrical with respect to the plane diagonal.   5. Detector according to claim 1, characterized in that the recessed peaks comprise at least one vertex (36, 37) adjacent to an edge spaced from the detector face and whose retaining conformations are capable of cooperating with the fastening members. (22) in the frontal orientation and in the lateral orientation of the detector head <2).   6. Detector according to one of claims 1 to   , characterized in that each fastening member (22) comprises two bearing walls (23) forming between them a right angle and extending on either side of the associated longitudinal arte (19, 21) of the detector, and an attachment wall (24) extending between the two supporting walls (23), concave side of the angle they form between them.   7. Detector according to one of the claims   1 to 6, characterized in that the fastening members (22) have on both sides of the associated longitudinal edge (19, 21) of the detector, two flat surfaces (26), perpendicular to each other, connecting with each other. substantially continuously to the corresponding cube faces of the detector head (2).   8. Detector according to one of claims I to   7, characterized in that each recessed peak (32, 34, 36 & 37) comprises a recalibration (40, 41, 51) of at least two faces adjacent to this vertex, and in that the depth of recess resulting from the offsets is increased locally by an overlapping undercut notch the two cuts.   9. Detector according to one of claims 1 &   7, characterized in that the recessed peaks comprise, at a distance from the detector face, at least one hollow apex <36, 37) comprising a relief (40, 41, 51) of each of the three faces which are adjacent to it, the depth in that the offsets are augmented locally by two undercut slots (42, 52) each overlapping two of the three offsets (40, 41, 51).   10. Detector according to one of claims 8 or   9, characterized in that each notch has a bottom (43) beveled & 45th relative to the two faces whose   offsets (41) are overlapped by this notch (42).   11. Detector according to claim 1, characterized in that a power cord (6) connected to the housing (1), enters the detector head (2) through a recessed peak (36) spaced from the detector face (3) , and which, in all orientations of the head relative to the housing, is adjacent to a face (39, 49) of the head (2) turned towards the case (1).   12. Detector according to claim 11, characterized in that the positioning and locking members (7, 8) have, on a face facing the detector head, a recess (47) extending to the fastening members. (22) for, in each orientation of the head (2), receiving the cord (6) between said hollow top (36) spaced from the detector face (3) and an inlet   substantially axial of the cord (6) in the housing (1).   13. Detector according to one of claims 11   or 12, characterized in that the bead (6) enters the   head (2) through a chamfer (46) of the hollow top (36).   14. Detector according to one of claims 1 &   11, characterized in that the positioning and locking members (7, 8) are substantially symmetrical by   ratio to a median longitudinal plane of the detector.   15. Detector according to one of claims 1 to   14, characterized in that one (B) of the positioning and locking members (7, 8) is integral with a housing cover. 16. Detector according to claim 1, characterized in that a first of the positioning and locking members (7) is fixed to the housing (1), and the other positioning and locking member (8) is   fixed laterally and removably to the first member (7).   17. Detector according to one of claims 1 &   16, characterized in that the two positioners -   and locking (7, 8) together form, for the head (2), a receiving soleplate interposed between the head (2) and the housing (1).