FR2639070A1 - SUPPORT ELEMENT FOR THE ASSEMBLY OF AT LEAST TWO - Google Patents

Abstract

Support element for the assembly of at least two frames characterized in that: - at least one terminal sector 25, 27 of the support element 10 comprises at least one stop tab 38, which radially dominates a surface d 'stop 44 provided on at least one of the frames 1, 2, - and that between the stop tab 38 and the other terminal sector 25, 27 is provided a retaining element 33, located between the frames 1, 2 and rising laterally in a location of the assembly opening 20 adjacent to the stop tab 38. The invention relates to a support member for the assembly of at least two frames.

Description

Support element for assembling at least two

built ".

  The invention relates to a support element for assembling at least two frames of an assembly device in which at least one additional connecting element connecting the frames can be provided and in which the support element comprises two end sectors. , extends beyond the assembly openings of the two frames, each end sector of the support member clinging respectively to one of the frames, so as to

keep united.

  A device is already known, in which two frames are connected by two support elements, and in which these two frames are united by additional connecting elements, these two frames being united by the connecting elements at the same time to a third frame. . In the known solution, the support elements have the form of locking screws. The support elements, that is to say the locking screws, each having two end sections. One end section is a screw head, and the other end section is threaded. The first end section with the screw head is applied to one of the racks and the other end section with the thread grips another frame, so that a connection is made between the two bodies. The connecting elements are made as connecting screws, by which the first two frames united together can be firmly attached to the third frame. The additional joining element made as a connecting screw holds the three frames together, so that the support elements lose their original function. The support members made as locking screws are only used to hold together the first two frames, before they are connected to the third frame by the connecting elements, thus forming an assembly. As usually happens in each screw connection, the locking screws after tightening create a preload, which relaxes a little after the tightening of the connecting screws. If the frames are subject to jolts, then there is the danger that the locking screws first become loose and even eventually with time come off. Most screw safety systems known to date do not provide absolute security. Even when the locking screws are stuck, there must be a certain quota of failure, however very low. Other screw safety systems, for example screws with cotter pin, are very expensive in manufacture and / or assembly. Disassembly with successive reassembly is

  not possible without decreasing the security effect.

  If the device is part of the combustion air intake system of an internal combustion engine, and the racks are covered by other parts to be added, so that the locking screws are located on the inside of the suction system, then there is the great danger, that the locking screws, in case they come off, fall into the suction system of the internal combustion engine, where they can cause

  possibly very important damage.

  The support element according to the invention is characterized in that: - at least one end sector of the support element comprises at least one locking tongue, which radially dominates a stop surface provided on at least one of the and, between the stop tab and the other end sector, there is a retaining element, located between the frames and rising laterally in a location of the assembly opening adjacent to the tongue. stopping and has the advantage that it can be achieved in a simple way a connection at least between two frames and that under no circumstances undesirably, not even by lasting shaking, there is the danger of a falling of the support elements out of the assembly openings, even when the frames are connected between

them by junction elements.

  The support element offers the advantage that it is a simple piece of construction, for which low requirements must be respected for its strength. Therefore, it can for example be realized with an interesting cost as a piece of

  plastic injection molding.

  Other improvements of the invention are characterized in that, on the terminal sector remote from the terminal sector comprising at least one stop tab, is provided a thread itself, which can be screwed on a female thread provided in the opening assembly; in the terminal sector protrudes with the male thread, in the axial direction, a centering pin, which can pass freely in the female thread; the two end sectors of the support element each comprise at least one stop tab; at least one stop tab is provided with a stop which at least partially enters one of the assembly openings; at least one of the end sectors of the support member is provided with two stop tabs; at one end of a terminal sector is provided a control part. It is very advantageous, when on the end sector of the support member, opposite the stop tab is provided a male thread, which can be screwed into a female thread of one of the two frames to be connected. In this case at any time, the support element can be removed and the frames separated, but in spite of this the support element can never escape, as long as the connecting elements

hold the frames together.

  Another advantage exists, when on the male thread of the support member is provided a centering pin, so that it exceeds the male thread in the direction of the axis, because with it the support member can be guided easily into

the internal thread and screwed.

  This is also an advantage, when the two end sections of the support member are each provided with at least one stop tab, whereby the two frames at least can be connected.

very quickly and simply.

  Another improvement occurs, when the stop tab is provided a stop, which after assembly is engaged at least partially in one of the assembly openings, which gives the support member stability and strength

particularly high.

  If one of the ends of the support member is screwed into one of the frames, it is especially advantageous, if at one end of the end section opposite the end section with male thread is provided a control part, because with this the l support element can be screwed particularly easily

  and if necessary again removed.

  Two embodiments of the invention are shown simplified in the drawing and are

  explained in more detail in the following description.

  It is shown: in FIG. 1, a first exemplary embodiment,

  - Figure 2, a second embodiment.

  In Figure 1 is shown a longitudinal section of a device with four frames 1, 2, 3, 4 with a support member 10 according to the invention and a connecting element 12. The frame 1 has a first side and a second opposite side 16. The second side 16 of the frame i detach parts 18 protruding for centering, which penetrate into hollow portions 19 provided in the second frame 2. The frame 2 is disposed on the second side 16 of the body 1. Between the frame 1 and the frame 2 can be provided as necessary and as shown in the embodiment, a frame 4. In the frame 2 is provided, for the purpose of creating an assembly opening 20, a blind bore 21

with an internal thread 22.

  The support member 10 essentially comprises an end section 25, a central section 26 and an end section 27. On the end section 27 is a male thread 30, which extends into a centering pin 31 on the opposite side to the central sector 26. The centering stud 31 has a shape such that in any case it passes freely through the female thread 22 of the frame 2, that is to say that a larger external diameter of the centering stud 31 must be more Smaller than a smaller inner diameter of the female thread 22. The centering stud can be made cylindrical, conical, square, pyramidal or the like. The terminal sector 27 of the support element 10 can be screwed

  on the female thread 22 of the frame 2.

  In the central sector 26 is formed a retaining element 33. The retaining element 33 has in the embodiment shown in the form of a circular flange radially projecting. But the retaining element 33 may also be in the form of, for example, a transverse pin passing through the central sector 26. This is favorable but not necessary, if the retaining element 33 is formed so that the terminal sector 27 can be screwed only to the retaining element 33 in the female thread 22 of the frame 2, since thus at best a precisely definable threading depth of the support member 10 can be respected. The end sector 25 of the support element 10 essentially consists of a foot 37 and two stop tabs 38. In the frame 1, there is an assembly opening 41 or several assembly openings 41. The assembly openings 41 in the frame 1 are provided so that, when the frame 1 in correspondence of the frame 2 has taken the intended position, the assembly opening 41 is opposite a

  assembly opening 20 with the blind bore 21.

  On the side 15 of the first frame 1 or, as shown in the exemplary embodiment, at a degree 42, there is provided a stop surface 44, into which

  the assembly opening 41 on the side 15 of the frame 1.

  The two locking tabs 38 are arranged on the foot 37 and for example offset from each other radially by 180. The locking tabs 38 are remote from the foot 37 more or less radially or radially inclined. At one end of the locking tongues 38, remote from the foot 37 is provided a stop surface 46. The end of the stop tab 38 with the stop surface 46 must be away from the foot 37 by a distance as it protrudes radially above the assembly aperture 41 and covers the stop surface 44 at least partially in the radial direction. Instead of two stop tabs 38, as shown in the figure, one can install on the foot 37 a single tab

  stop 38 or even more than two stop tabs 38.

  The stop tab 38 must itself be elastic and / or the foot 37 must be elastic and / or there must exist between the stop tab 38 and the foot an elastic junction so that the stop tab 38 can be compressed towards the middle of the support member until the end sector 25 of the support member 10 can be pushed into the assembly opening 41 without damage to the 10 between the support member 10 and the frame 1. Between the stop tab 38 and the foot 37, there must be a recess 48 large enough so that the stop tab can be compressed sufficiently far radially so that the end sector 25 of the support element 10 can be threaded into the assembly opening 41. The foot 37 must be of such length that the stop surface 46 of the locking tongue 38 also in the radial direction protrudes above the stop surface 44, when the frame 1 is brought into its desired position relative to the frame 2. This is favorable, if the foot 37 slightly exceeds the side of the stop surface 44 opposite the frame 2, and if the locking tongue 38 is placed radially inclined, away from one end of the terminal sector 25 and in the direction of the central sector. The stop tab 38 or the stop tabs 38 together with the foot 37 have the shape of an arrowhead or a hook, the arrowhead being axially outwardly of the 10. In order that the end sector 25 of the support element 10 can not be withdrawn involuntarily from the assembly opening 41 in opposition to its mounting direction, a stop is advantageously provided as a stop surface 46. 50 additional safety measure, at least for a stop tab. The abutment 50 protrudes in the mounting position at least partially inside the assembly opening 41. The abutment prevents, also with relatively large tensile forces, between the frame 1 and the frame 2, the stop tab does not deviate too much, that is to say at the limit above 90 ', so that eventually it breaks or, by sufficient elasticity, it bends to the point, that the sector terminal 25 of the support member 10 can be removed from the assembly opening 41 in the opposite direction to the mounting direction. At the end of the terminal sector 25 can be provided a control part 52. The control part 52 is in the embodiment a cylindrical extension with a transverse groove on its front side. With this, the support member can be rotated with a commercially available screwdriver and screwed into the frame 2 or unscrewed the same frame. Instead of the transverse groove, another form may be provided, for example a hexagon socket screw or hexagon socket surface for existing keys. The support element 10 ensures a secure connection between the frame 1 and the frame 2 and, where appropriate

  another frame 4 or other frames not shown.

  A connection of this type is frequently desired, when two frames 1, 2 or more frames must be connected in a secure manner for example in a first mounting location, and then later tie them securely together, if necessary even, rigidly with another frame 3 in another location by means of another connecting element or several connecting elements 12, for example an assembly screw 60 or several assembly screws 60. In the embodiment example the assembly screw 60 interconnects the frames 1, 2, 4, and at the same time also rigidly attaches them to the frame 3. By tightening the assembly screw 60, the support element 10 loses its purpose in itself. It is important, however, that the support member 10 never, even as a result of shaking movements of the device for years, fall out of the assembly openings 41, 20, as long as the racks 1, 2, 3 , 4 are connected by the connecting screw 60. A fall of the support member 10 out of the assembly opening 41 is surely ingeniously prevented in a desired manner by the retaining element 33, which can not pass through. the assembly opening 40. However, a disassembly is nevertheless possible at the same time by unscrewing the assembly screw 60, because also the support element 10 can be unscrewed and taken out of the assembly opening 20, thanks to the female thread 22, so that the frame 1

  and the frame 4 can be separated from the frame 2.

  Through the control member 52, the support member 10 can be screwed with a single tool into the assembly opening 20 or if necessary unscrewed again. But as it is possible, it can be rotated, in case of lack of control part 52, by a part outside of the terminal sector 25, the control part 52 may if necessary not be adopted. The installation consisting of frames 1, 2, 3, 4 may constitute, for example a part of the suction system of an internal combustion engine 68. In the frame 2 may be placed for example a gate valve. The frame 4 may for example be a gasket and / or be made of a material, which makes it more difficult for the heat to be transmitted between the frame 2 and the frame 1. In the zone of the frame 1, especially on the first side 15 of the body 1, may for example be implemented an injection valve 72 shown in dashes and dots in the drawing. On the frame 1, the side 15 may further exist a step 74 in the form of a circular ring. On the step 74, above the first side 15 of the frame 1, can be threaded an air duct 76 shown in dashed lines. On the other hand, the frame 3 can be assembled with the internal combustion engine 68 shown in broken lines, by elements not shown. In the embodiment shown, the frames 1, 2, 3, 4 are hollow and there is a bore 78 through longitudinally all the frames 1, 2, 3, 4. Thus for example air and / or a fuel from of the air line 76 or the injection valve 72 can pass through the frame 1, the frame 4 and the frame 2 to the butterfly valve 70 and thence through the

  frame 3 towards the internal combustion engine 68.

  With the construction of the support element according to the invention, it is prevented that it falls out of its intended assembly openings 20, 41, through which in any case it can not reach the zone of the bore 78, where o

  possibly the butterfly valve 70 could be-

  damaged or where it could move towards

the internal combustion engine.

  A second exemplary embodiment is shown in FIG. 2. In FIGS. 1 and 2, identical pieces having the same function are designated by the same reference numbers. In the second embodiment, the frames 1, 2, 3, 4 are largely the same as in the first embodiment (Figure 1), until the assembly opening 20 in the frame 2. The bore blind 21 with the female thread 22 disappears in the second embodiment. Instead, the assembly opening 20 is a through bore 90, which begins inside the frame 2 from one side adjacent to the frame 1 and opens a little further by a degree 91 into another The step 91 at the same time forms a stop surface 94. The support element 10 of the second example also consists essentially of three sectors, the terminal sector

  , the middle sector 26 and a terminal sector 97.

  Sectors 25 and 26 are in the two approximately equal embodiments. In the second embodiment, the terminal sector 97 is made approximately equal to the terminal sector 25. The terminal sector 97 is also composed in the second embodiment of a foot 37 already described, the stop tab 38 , of the stop surface 46 and, if appropriate, of the abutment 50. Here again, it is possible to add to the foot 37 a stop tongue 38 or several stop tabs 38. The combined action between the sector terminal 97 of the support member and the stop surface 94 on the frame 2 is the same as the combined action between the terminal sector 25 and the stop surface 44 provided on the frame 1. This

  last has already been described in the description of the

  first example of realization, that is why it does not

  must not be repeated here for simplicity.

  In the second exemplary embodiment (FIG. 2), the central sector 26 with the retaining element 33 has the advantage that the support element 10 during assembly, that is to say at the time of the meeting of the body 1 with the body 2 does not slip through a

assembly openings 20, 41.

  Depending on the type of assembly, the retaining element 33 is not necessary per se in each case, so that the support element 10 could

  also be achieved without central sector 26, that is,

  that is, without the retaining element 33, and the foot 37 of the terminal sector 25 could be directly identified with the foot 37 of the terminal sector 97. Even under the central sector 26 with the retaining element 33, after assembly of the built 1, 2, the impossibility of a fall from

  the support member 10 is provided.

  But depending on the type of mounting, it is also possible to thicken one of the end sectors 25,

  27, 97, for example with a kind of bead.

  The support element 10 can then be introduced into the assembly openings 20, 41, until the thickened end section 25, 27, 97 arrives in position against one of the stop surfaces 44, 94. solution, the retaining element 33 of the central sector 26 disappears. The opposite terminal sector is provided with at least one stop tab 38. The foot 37 must be sufficiently long, so that the stop surface 46 of the stop tab 38 can exceed

  above the stop surface 44, 94.

  The support member 10 provides an essential, essential protection of the invention against a fall out of the assembly openings 20, 41. Despite this, the frames 1, 2, 4 assembled by the support member can at any time to be separated. In the first exemplary embodiment according to FIG. 1, the separation occurs by the unscrewing of the support member 10 of the frame 2. In the second embodiment of FIG. 2, the separation can occur by compressing the tabs stopper 38 on one of the end sectors 25, 97, so that this terminal sector can be removed from the assembly opening 20 or 41. As long as the frames 1, 2, 3, 4 of the installation are connected by the connecting element 12, a fall of the support element 10

is never possible.

  The support member 10 most often has, particularly in the case of use described, no requirement of strength to complete. Therefore, it can advantageously, in most cases, be produced in plastic, for example as a piece

injection molded.

Claims (1)

1e) support element for assembling at least two frames of an installation in which may be provided additionally at least one connecting element connecting the frames (1, 2) and wherein the support element comprising two end sectors, extends beyond the assembly openings of the two frames, each end sector of the support member respectively clinging to one of the two frames, so as to keep them united, characterized in that: - at least one sector terminal (25, 27, 97) of the support member (10) comprises at least one stop tab (38), which radially gives a stop surface (44, 94) provided on at least one of the frames ( 1, 2), and between the locking tongue (38) and the other end sector (25, 27, 97) is provided a retaining element (33), located between the frames (1, 2 ) and rising laterally in a location of the assembly aperture (20, 41) adjacent to the stop tab ( 38). 2 ') support element according to claim 1, characterized in that, on the terminal sector (27) remote from the terminal sector (25) comprising at least one locking tongue (38), is provided a male thread (30) , which can be screwed onto a female thread (22) provided in the assembly opening (20). 3 ') support element according to claim 2, characterized in that, in the terminal sector (27) protrudes with the male thread (30), in the axial direction, a centering pin (31), which can freely pass through the female thread (22). 4 ') support element according to claim 1, characterized in that, the two end sectors (25, 97) of the support member (10) each comprise at least one stop tab (38). Support element according to one of the preceding claims, characterized in that at least one stop tab (38) is provided with a stop (50) which at least partially enters one of the openings assembly (20, 41). 6 ') Support element according to any one of the preceding claims, characterized in that at least one of the end sectors (25, 97) of the supporting element (10) is provided with two locking tongues (38). ). 7) Support element according to one   any of the preceding claims, characterized   in that at one end of a terminal sector (25)   a control part (52) is provided.