FR2680430A1 - SENSOR FIXING WITH CONNECTING MEANS FOR AN EXTENDED HOUSING. - Google Patents

Abstract

The present invention relates to a sensor attachment with connecting means for an elongated housing, in particular a linear drive housing, on the outer surface of which there extend fixing projections or fixing grooves. - According to the invention, a housing (6) enveloping the fixing projections or engaging in the fixing grooves (3b) is provided, the housing (6) is provided, on its bottom (6a), with clamping jaws enveloping the fixing or extendable jaw protrusions (6d, 6e) engaging the fixing grooves (3b), and, in the housing (6), a preload is provided for the enveloping clamping jaws and an element of the distance (8) is provided for the extendable jaws (6d, 6e), and, in the housing (6), is arranged, in a protected manner, a sensor (24), and a space (25a) is provided for the cables ( 25) which extend there.

Description

The present invention relates to a sensor attachment with connecting means

  for an elongated housing, particularly a

linear drive box.

  It is known (prospectus of the company A Mecman "Abtasteinheit fur Serie 170") to cover sensors on a linear drive by means of a profiled sheet-shaped U and

  let the connection cables hang freely.

  Another known solution of a cable guide (prospectus of the company Martonair "Magnetkolbensystem Typ M / 457 XX") guides the cable and the magnetic switches (magnetic field sensors) in a rod and leaves the same hang

  freely the cable on the outside of the rod.

  In pneumatic linear drives, it is known to detect the position of the piston by interrogation on the external faces of the cylinder In a pneumatic cylinder without piston rod, a magnetic system (permanent magnet) is mounted in the piston to detect the position without contact of the piston by a magnetic field sensor (switch

  Reed) Another achievement is the arrangement of the

  permanent mantle on the jack of a jack

  sensors or magnetic switches must, therefore,

  quence, be fixed in any position of the elongated housing and be adjusted with respect to their position.

  respective number of sensors and their position are

  the specific case accordingly, the cable must

  to be guided and fixed according to their position.

  Known proposals are disadvantageous in view of the poor realization of the fixation and protection of

  sensors and cables, and there is a risk of damage

  when handling such cases.

  The object of the invention is to provide an embodiment of the

  fixation and the condition for placing and fixing

  and a safe setting of one or more sensors to achieve a protected layout, simple assembly, cost-effective design and installation.

appropriate cables.

  For this purpose, the connection means sensor attachment for an elongate housing, in particular a linear drive housing, on the outer surface of which fixing projections or fixing grooves extend, is

  remarkable, according to the invention, in that a casing

  the fixing projections or engaging in the fixing grooves are provided, in that the housing is provided on its bottom with clamping jaws enclosing the attachment protrusions or extensible jaws engaging in the fixing grooves , and in the housing a preload is provided for the enveloping clamping jaws and a spacer member is provided for the expandable jaws, and in that the housing is shieldably provided with a sensor, and a space is

  provided for cables that extend there.

  The advantages obtained by virtue of the invention consist in particular in that a simple, orderly and safe fixing of the cables is thus obtained, a simple fabrication

  and economical housing, easy mounting and

  advantages for the establishment and the protection

cables and sensors.

  According to another characteristic of the invention, a hollow internal projection, covering the longitudinal groove on its walls, continues along the length of the groove or divided into individual sections, is provided on a foldable or lockable housing, and in the cavity of the projection, are

  provided one or more removable spacers.

  According to yet another characteristic of the invention, it is provided that the fixing groove has a dovetail profile, the hollow protrusion covering the walls of the groove is provided with respect to the bottom of the groove. centrally, a tapered wall hinge, and that the spacer element is constituted by a bit bit in the material of the projection The folding or lockable housing can be easily put in place in the groove by folding of the hinge and then it can be moved to any longitudinal position and

fixed by means of the screw.

  Another improvement provides that the protrusion is part of a one-piece housing, which has, apart from the hinge extending towards the bottom of the groove, at least one other hinge in a first corner area. the cross-section of the housing, and another hinge in a second corner area, and a snap-fit connection, formed by a plug-in bar and an undercut snap-fit space, receiving the latter, for a lockable lid. housing can be realized, as

  plastic profile, by an extrusion process.

  During manufacture, the elastic hinges can be, therefore, already extruded therewith. Thus, particular fastening means are saved, and nevertheless an easily accessible housing is obtained.

completely closable.

  According to another characteristic of the invention, a

  In the assembled state, the thinned-walled region in the first corner region is formed by a thickening and a wall portion which can abut one another and are connected by a thinned wall. high stability of the closed case In addition, the hinge, after closing the lid, is no longer subjected to pressure. According to another characteristic of the invention, a bent piece arranged inside the housing and a sensor clamped between the wall of the housing and the bent part are fixed by means of the aforementioned screw. By slightly loosening the screw, the sensor is released and it can be adjusted in the longitudinal direction and thus precisely centered, that is to say

positioned longitudinally.

  A safe and orderly position of the cables in the housing is

  Moreover, in that several cables are

  laid parallel to the housing

below the bent piece.

  In addition, it is advantageous that resilient cable ties are provided on the inner face of the lockable lid. The figures of the annexed drawing will make clear how

the invention can be realized.

  FIG. 1 is a perspective view of a first exemplary embodiment of fixing a sensor on a housing

  of a cylinder without piston rod in the service state.

  FIG. 2 is a perspective view of the attachment of

  sensor according to a second embodiment.

  FIG. 3 is a perspective view, similar to FIG.

  1, a phase of the establishment of the housing.

  FIG. 4 is a view similar to FIG. 1 in the phase

tightening the housing.

  FIG. 5 is a view similar to FIG.

  locking the housing by the folding lid.

  The sensor attachment is equipped with a connection for an elongated linear drive housing 1, on the outer surface 2 of which there extend fixing projections 3a or fixing grooves 3b On this external surface 2, the projections 3a and 3b are recessed on the bottom 6a of a housing 6 are provided with clamping jaws 6b and 6c enclosing the fixing projections 3a (FIG. 2), or stretching jaws 6 d and 6 e engaging in the

  fixing grooves 3b (Figure 1).

  A hollow internal projection 5, covering the fixing groove 3b on its walls 4, continues or divided into sections.

  This hollow groove 5 is part of the folding or lockable housing 6, which, thanks to the hollow protrusion 5, can be moved back and forth and fixed on the housing 1. of linear training.

  So that the clamping jaws 6b, 6c can be

  pre-stressed, a cavity 7 is provided for this purpose in the hollow projection 5 and therein there is provided one or more removable spacer members 8 which, upon placement, press the hollow projection 5 , by the

  In the embodiment shown, the fixing groove 3b has a dovetail profile 9. The cavity 6d, 6e, of the interior against the walls 4 of the groove. 7 is provided in this case, vis-à-vis the bottom 10 of the groove, centrally, a hinge 11 thinned wall, so that when the housing 6 is open, the empty housing, all d ' initially slightly folded, can be brought with the hollow projection 5 from the front, that is to say perpendicularly to the outer surface 2, and then the spacer element 8 is put in place for fixing The latter is constituted by a screw 12 biting into the material of the projection 5, so that it is also ensured in this case a simple construction and to

economic character.

  The housing 6 is formed in one piece, so that the projection 5 is part of this housing 6 in one piece It is advantageously made of polyamide with fillers, such as glass fibers and the like A apart from the hinge 11 extending towards the bottom 10 of the groove, at least one other thin-walled hinge 11 is provided in a first corner region 13 of the cross-section 14 of the housing, and another hinge in a second corner area 15 Par

  Moreover, there is on the housing 6 a connection with

  18, formed by a plug-in strip 16 and an undercut catching space 17, receiving the same, for a lockable cover 19. The first corner zone 13 is also made in a particular manner.

  what is provided therein the hinge 11 with thinned wall com-

  carrying, in the mounted state, a thickening 21 and a wall portion 22 which can bear against each other and

  connected by a thinned wall 11a.

  Furthermore, a bent piece 23 arranged inside the housing 6 is fixed by means of the screw 12, and a sensor 24 (magnetic field sensor) clamped between the wall 14a of the housing and the bent part 23 is fixed to As a result, by unscrewing the screw 12, it is possible not only to position the housing assembly 6 along the length of the housing 1 of the linear drive, but also the sensor 24, which must be adjusted. on the piston or a force-taker 30 in a manner corresponding to the

position of the permanent magnet.

  Advantageously, several cables 25 may be arranged, extending parallel, in the housing 6 below the bent piece 23. In the embodiment of Figure 1, elastic fasteners 19 formed in the wall of the lid

19 are integrated in this one.

  As shown in FIGS. 3 to 5, the manipulation of the sensor attachment including a channel for cables has

  place according to the steps described below.

  First, the hollow protrusion 5 is introduced into the fixing groove by folding the housing 6 at the hinge 11, with the hollow projection 5 in the groove of

fixation (Figure 3).

  According to FIG. 4, after opening of the cover 19, access to the inside of the housing 6 is free, and the bent piece 23 can then be put in place at the same time as the screw 12 and fastened by means of the screwdriver 27 , so that,

  on the one hand, the housing 6 is positioned and, on the other hand, the sensor 24 is also positioned.

  After the completion of this step and the placement of other cables 25 for other sensors 24, the lockable cover 19 is locked by the snap connection 18, so that the housing 6 is now defined. It is also possible for the cable 25 to be closed, preventing cables 25 from hanging or sensors 24 from remaining exposed. On top of the housing 6, a longitudinal recess 28 is formed in which labels 29 can be placed for individual connections of the cables or the like, such a label 29 possibly being

  placed at the height of the sensor 24 Above this recess, there is a magnet support 26.

  At one end of the housing 6, there is provided a closure cover, not shown. Such a cover is equipped, as the case may be, with a plug for the electrical connection.

  cables 25 of the sensors 24 are then connected to these sockets. In such a plug, in turn engages a connector, to which the control lines are connected.

  An apparatus equipped with the sensor attachment and the channel for the described cables can thus be mounted and removed from

  completely wired way In this case, it is only necessary to plug in or remove the aforementioned connector.

Claims (7)

  A sensor attachment with connecting means for an elongate housing, in particular a linear drive housing, on the outer surface of which fixing projections or fixing grooves extend, characterized in that a housing (6) encircling the fixing projections (3a) or engaging in the fixing grooves (3b) is provided, in that the housing (6) is provided,   on its bottom (6 a), clamping jaws (6b, 6c)   the fixing projections (3a) or extensible jaws (6d, 6e) engaging in the fixing grooves (3b), and in the housing (6), prestressing is provided for the enveloping clamping jaws (6b, 6c) and a spacer (8) are provided for the extensible jaws (6d, 6e), and that in the housing (6) is arranged, protected way, a sensor (24), and a space   (25 a) is provided for the cables (25) which extend there.   Sensor attachment according to claim 1,   characterized in that a hollow internal projection (5)   screwing the longitudinal groove (3b) on its walls (4),   continuous along the length of the groove or divided into   are provided on a folding or lockable housing (6), and in that   projection (5) are provided with one or more removable spacer elements (8).   Sensor attachment according to claim 1, characterized in that the fixing groove (3b) has a dovetail profile (9), in that the hollow projection (5) covering the walls (4) of the groove is centrally provided with a bottom wall hinge (11) and that (12) biting into the material of the projection (5).   Sensor attachment according to one of Claims 1 to 3, characterized in that the projection (5) is part of a one-piece housing (6) which has, apart from the hinge 5 extending the bottom (10) of the groove, at least one other hinge in a first corner area (13) of   the cross-section (14) of the housing, and another hinge in a second wedge area (15), and a snap-in connection (18) formed by a tension rod (16) and a snap-in space ( 17), receiving the latter, for a locking cover ble (19).   A sensor mount according to any one of claims 1 to 4, characterized in that a hinge (11) with a thinned wall in the first corner area (13) is formed in the state   mounted by a thickening (21) and a wall portion (22) can abut one another and connected by a thinned wall (11a).   Sensor attachment according to any one of claims 1 to 5,   characterized in that a bent piece (23) arranged inside the housing (6) and a sensor (24) clamped between the wall (14a) of the housing and the bent part (23) are fixed by means of the screw (12).   Sensor attachment according to Claim 6, characterized in that a plurality of cables (25) are arranged,   extending in parallel in the housing (6) below the bent piece (23).   Sensor attachment according to any one of claims 4 to 7,   characterized in that resilient clips (19a) for the cables are provided on the inner face of the lockable cover (19).