WO1997016651A1

WO1997016651A1 - Clamping holder

Info

Publication number: WO1997016651A1
Application number: PCT/DE1996/001159
Authority: WO
Inventors: Uwe Hammer
Original assignee: Robert Bosch Gmbh
Priority date: 1995-10-31
Filing date: 1996-06-29
Publication date: 1997-05-09
Also published as: DE19540586A1

Abstract

Different types of fastening means can be used to hold a cover on a throttle valve nozzle. However, each of these known fastening means has considerable disadvantages; this has a substantial effect on the cost of producing the throttle valve nozzle. The invention relates to a clamping holder (30) which has a mounting for holding the bracket (33) on the structures (1, 2) outside the clamping regions. The clamping holder is particularly provided to support a cover on a throttle valve nozzle of a vehicle internal combustion engine.

Description

Clamp bracket

State of the art

The invention relates to a clamp holder according to the preamble of claim 1.

There are various fasteners for holding two bodies together. For example, a through hole can be provided in one of the two bodies and a thread can be provided in the other body. A screw is inserted through the through hole and screwed into the thread. The two bodies are held against each other by tightening the screw. In order to ensure quality, the screw must be tightened with a certain torque monitored by the control system. Considerable effort is required to maintain the specified torque. The two bodies are often held together with several screws. In the area of the screws, the pressure between the two bodies is particularly high, which leads to undesired deformation of the body in some applications. If, for example, one of the two bodies is made of plastic, a sleeve must be injected into the plastic in the area of the screw, or a relatively large washer is required. Both mean considerable additional effort. Additional effort is required to ensure that the screw does not come loose. Another disadvantage is that the body must have sufficient material in the area of the screw. In order to compensate for signs of settlement, the screw length must be relatively large, which has a negative impact on the overall size. As FIG. 1 shows, a retaining spring c can also be provided as the fastening means for holding the two bodies a and b together. The retaining spring c holds the two bodies a and b together. So that the retaining spring c cannot slide off the bodies a, b, in the embodiment shown in FIG. 1, bumps a ', b' must be provided on the bodies a, b. During assembly, the retaining spring c must snap over the elevations a ', b'. This leads to an overstretching of the retaining spring c during assembly or the material of the retaining spring c cannot be used optimally. Another disadvantage of the embodiment shown in FIG. 1 is that the retaining spring c can be removed and reassembled by unauthorized persons without permanent, easily visible traces. As a result, manipulations may have been carried out between the two bodies a, b, without this being able to be determined from the outside afterwards. Another disadvantage is that the casting of the bodies a, b is often associated with considerable effort. For example, the body a shown in FIG. 1 can only be produced as an injection molded part with considerable effort using additional slides in the injection molds.

The mounting of the retaining spring c is also quite complex in the embodiment shown in FIG. 1. In order to keep the overstretching of the retaining spring c within limits, the retaining spring c is first hung on one of the two bodies a, b during assembly and then pressed over the elevation a 'or b' of the other body. This requires a combined rotary and sliding movement of the retaining spring c during assembly of the retaining spring c on the two bodies a, b, which makes automation of the assembly process considerably more difficult and causes considerable costs. Advantages of the invention

The clamp holder according to the invention with the characterizing features of claim 1 is advantageously easy to manufacture. Installation is particularly easy. The

Manufacture of the shape of the two bodies suitable for the clamp holder is advantageously also very simple in terms of casting technology. The two bodies with the holding element can be easily put together. Automation of the assembly is advantageously easily possible.

The body and the holding element can be matched to one another in such a way that access is secured, which has the advantage that it is not possible to lift the holding element off the two bodies or that

Attempts to lift off clear traces remain on the holding element and / or on at least one of the two bodies.

The holding device between the holding element and at least one of the two bodies can advantageously be designed so that the holding device works independently of a clamping force applied by the holding element, which holds the two bodies together, so that the holding element is held in place even if the clamping force between the two bodies decreases is guaranteed on the two bodies.

The clamping bracket can advantageously be designed so that the forces for holding the two bodies together are evenly distributed, so that no force peaks and unwanted deformations occur.

The clamp can advantageously be designed so that the holding element can be mounted on the two bodies by a simple linear movement, for example with a mechanical stamp. This simplifies the Automation of the assembly process in an advantageous manner essential.

The measures listed in the dependent claims allow advantageous developments and improvements of the clamp bracket.

If the holding safety device is provided in the region of the intermediate piece connecting the two tensioning arms, a holding element that is particularly easy to produce is advantageously obtained. The clamp bracket is advantageously particularly weight-saving.

By means of the at least one holding lug on the holding element, which in the assembled state engages behind a snap hook provided on at least one of the bodies, or by means of a holding lug provided on the holding element, which in the assembled state rests against a clamping surface provided on at least one of the bodies, or by a combination these two measures advantageously provide a particularly safe, easy to manufacture reliable fuse for holding the holding element on the two bodies. The clamp holder can advantageously be designed so that an unwanted detachment of the holding element from the two bodies can be excluded with certainty.

Characterized in that the mounting of the holding element on the two bodies can be done without increasing the clamping force, the material of the holding element is advantageously noticeably protected, and the strength of the material of the holding element can be used much better.

The proposed positioning between the bodies and the holding element advantageously ensures a reliable connection of the two bodies. drawing

Selected, particularly advantageous exemplary embodiments of the invention are shown in simplified form in the drawing and are explained in more detail in the following description. FIG. 2 shows the clamp holder in an application in which the particular advantages of the proposed clamp holder are particularly useful, FIGS. 3 to 6 show details of the selected exemplary embodiment with a changed scale and different viewing direction, FIG. 7 shows a modified embodiment by way of example, and FIGS. 8 to 12 different views of an exemplary holding element and FIGS. 13 and 14 details of modified further exemplary embodiments.

Description of the embodiments

The clamp bracket can be used if two bodies are to be connected to one another in a simple manner and if these bodies are to remain together permanently. The advantageous properties of the clamp bracket are particularly noticeable if one of the bodies or both bodies made of relatively sensitive material, e.g. B. plastic, and when it comes to a particularly precise positioning of one body relative to the other body, further if local stress concentrations in the material of the body to be connected should be avoided.

FIG. 1 shows an exemplary embodiment selected, in which the proposed one

Clamp bracket is a particularly clever connection for holding two bodies together. In the exemplary embodiment selected as an example, the first body is a throttle valve connector 1, and the second body is a cover 2 in this exemplary embodiment

Throttle valve connector 1 with the cover 2 can be referred to as throttle valve actuating unit 3. The Throttle body 1 is made, for example, of aluminum and the cover 2 of plastic. The throttle valve connector 1 and the cover 2 are preferably produced by casting.

Various areas of the throttle valve actuating unit 3 are not shown in the drawing, so that other areas can be shown on the largest possible scale.

A gas duct 4 runs through the throttle valve connector 1. The gas duct 4 leads, for example, from an air filter (not shown) to a combustion chamber (not shown) or to a plurality of combustion chambers of an internal combustion engine (not shown). The section shown in FIG. 1 runs across gas channel 4. Air or a fuel-air mixture can flow through gas channel 4.

A throttle valve shaft 6 extends across the gas channel 4. The throttle valve shaft 6 has a right end 6a and a left end (not shown). The throttle valve shaft 6 is pivotally mounted in the region of the right end 6a with the aid of a bearing 8 in the throttle valve connector 1. A throttle valve 10 is fastened to the throttle valve shaft 6 with a fastening screw 10a. The throttle valve shaft 6 can, for example, be pivoted through 90 ° between two end positions. In one of the two end positions, the throttle valve 10 closes the gas channel 4 almost completely. In the other end position of the swivel range of the throttle valve shaft 6, the gas channel 4 is opened to the maximum.

Outside the gas channel, a gear wheel 12 is connected to the throttle valve shaft 6 in a rotationally fixed manner at the end 6a of the throttle valve shaft 6. At the

Throttle body 1, an axis 14 is fixed. Another gear wheel 16 is rotatably mounted on the axis 14.

Between the throttle valve connector 1 and the cover 2 there is a housing space 18 which receives an electric servomotor 20. The servomotor 20 has a drive shaft 20a projecting parallel to the throttle valve shaft 6 on which a drive wheel 20b is seated as a further gearwheel. The gear wheels 12, 16 and 20b are, for example, gear wheels and are in mutual engagement for the purpose of transmitting torque from the servomotor 20 to the throttle valve 10.

The throttle body 1 has an end face lb. The cover 2 has an inner side 2a facing the throttle valve connector 1 or the housing space 18. The main direction of expansion of the cover 2 extends essentially transversely to the throttle valve shaft 6 and transversely to the drive shaft 20a. A stepped end face 2b on the cover 2 surrounds the inside 2a. The face 2b of the cover 2 bears against the end face 1b of the throttle valve connector 1.

There is a seal 22 between the end face 1b and the end face 2b. The seal 22 ensures that no disruptive particles can penetrate into the housing space 18 from the outside. The seal 22 is inserted into a groove with pretension. In particular because of the seal 22, it is necessary that the cover 2 is pressed over its entire circumference with a certain force against the throttle valve connector 1. So that the cover 2 does not have to be built unnecessarily large, it is important that the force that holds the cover 2 against the throttle valve connector 1 is distributed as evenly as possible over the entire circumference. Since deformation of the cover 2 is very undesirable, it is important that strong local force concentrations are avoided. A potentiometer 24 is provided in the housing space 18. The potentiometer 24 comprises a slider 24a, a carrier plate 24b and a slideway 24c. In the exemplary embodiment shown, the potentiometer 24 has four wipers 24a which sweep over four slideways 24c attached to the carrier plate 24b when the throttle valve 10 or the throttle valve shaft 6 is pivoted. Depending on the instantaneous position of the throttle valve 10, the potentiometer 24 supplies an electrical signal to a control device, not shown. The potentiometer 24 serves as a sensor for detecting the position of the throttle valve 10.

The grinders 24a are attached directly to the face of the gear wheel 12, and the carrier plate 24b is fastened to the cover 2. Since the electrical signal supplied by the potentiometer 24 is determined by the position of the sliders 24a relative to the slideways 24c, it is very important that the carrier plate 24b is positioned exactly and also by external influences, for example during the attachment of the cover 2 to the throttle valve connector 1 , no shift takes place, which would lead to a measurement error of the potentiometer 24. It is therefore important that the cover 2 remains exactly positioned in relation to the throttle valve assembly 1 even when the throttle valve actuating unit 3 is in operation for a long time. Even slight, not completely unavoidable settling phenomena and dimensional tolerances of the components involved must not lead to a displacement of the carrier plate 24b relative to the grinders 24a. Accordingly, the lid 2 on

Throttle body 1 are attached. The proposed clamp bracket is particularly well suited to meet these requirements.

In the area of the connection of the lid 2 with the

Throttle body 1, a clamp bracket 30 is provided. When the cover 2 is viewed from the front (view from right to left in FIG. 2), the cover 2 is a disk-shaped structure with a circumference that does not run quite regularly. The extent between

Throttle body 1 and the cover 2 are preferably several Kleπimhalterungen 30 provided. In addition to the clamping bracket 30, a further clamping bracket 30 'is shown in FIG. The further clamp bracket 30 'has the same shape and function as the clamp bracket 30.

For better understanding, the area with the clamping bracket 30 of the throttle valve actuating unit 3 is again shown in different views in FIGS. 3 to 6 with a different scale. FIG. 3 shows a section of the same sectional plane and the same viewing direction and as in FIG. 2. FIG. 4 shows a sectional plane which is designated IV-IV in FIG. FIG. 5 shows a sectional plane designated V-V in FIG. 3. FIG. 6 shows a sectional plane designated VI - VI in FIG. 3.

In all figures, parts that are the same or have the same effect are provided with the same reference symbols.

FIG. 3 shows a section of the throttle valve connector 1 and the cover 2. The throttle valve connector 1 is also referred to below as the first body 1 in the further description of the preferred exemplary embodiments. The cover 2 is also referred to below as the second body 2.

The particularly advantageously designed clamping bracket 30 shown in FIG. 3 comprises a first holding surface 31 provided on the first body 1, a second holding surface 32 provided on the second body 2 and a holding element 33. The holding element 33 can be divided into several sections: first clamping arm 33a, second clamping arm 33b and intermediate piece 33c. The clamp bracket 30 further includes an access lock 36, a positioning 38, a

Holding device 40, a first clamping area 41 and a second clamping area 42.

Access protection 36 is provided so that unauthorized persons have no possibility or at least no simple one

Possibility of lifting the holding element 33 from the two bodies 1, 2. This is intended to prevent unauthorized persons from accessing the housing space 18 (FIG. 2). If, in a particular application, it is not necessary for third persons to prevent the holding element 33 from being lifted off, access protection 36 can be dispensed with.

The positioning 38 ensures that the holding element 33 assumes exactly its intended position when the holding element 33 is mounted on the body 1, 2. This reduces the effort of the machine equipment provided for the assembly.

The area around the first clamping arm 33a of the holding element 33 with the area around the first holding surface 31 of the first body 1 can be referred to as the first clamping area 41. The second holding surface 32 on the second body 2 and the second clamping arm 33b of the holding element 33 are located in the region of the second clamping region 42. The first clamping arm 33a presses on the first holding surface 31, and the second clamping arm 33b presses on the second holding surface 32. The holding element 33 acts on the two bodies 1 and 2 with the two clamping arms 33a, 33b, so that the end face 1b of the first body 1 is pressed against the end face 2b of the second body 2. The two bodies 1 and 2 are held against one another by the holding element 33. With the preferred selected Exemplary embodiment, the holding element 33 holds the cover 2 against the throttle valve connector 1. The distance between the two clamping arms 33a, 33b of the unmounted holding element 33 is smaller than the distance between the two holding surfaces 31, 32, so that an elastic tension in the

Clamping arms 33a, 33b and in the intermediate piece 33c is present.

The securing device 40 is not in the region of the first clamping area 41 and not in the area of the second clamping area 42. The securing device 40 is located outside the two clamping areas 41, 42. This allows the clamping areas 41 and 42 to be designed such that the holding element 33 in Area of the two clamping areas 41, 42 the intended task, d. H. holding the two bodies 1 and 2 together optimally. Characterized in that the securing means 40 is provided outside the clamping areas 41 and 42, the clamping areas 41 and 42 can in particular be designed such that none during assembly of the holding element 33 on the body 1 and 2

Force increase takes place, and the body 1 and 2 can also be optimized with a view to a particularly simple casting technology. In the preferred embodiment selected, the securing device 40 is located between the two clamping areas 41, 42 in the area of the intermediate piece 33c.

The retaining lock 40 comprises a retaining lug 40a provided on the holding element 33 (cf. in particular FIG. 4) and a retaining lug 40a ', as well as a snap hook 40b with a slope 40c (FIGS. 3, 4) and a snap hook 40b' with a slope 40c ' . The snap hooks 40b, 40b 'are provided on the first body 1 in the selected exemplary embodiment.

The surface on the body 1 facing the intermediate piece 33c of the holding element 33 is subsequently shown with the body side la designated. There is an installation spacing 44 between the intermediate piece 33c and the body side la (FIGS. 3, 4). An arrow is drawn in FIGS. 3 and 4 and bears the reference symbol 46. This arrow symbolizes the mounting direction 46. The holding element 33 is moved in this direction during the mounting.

FIGS. 3 and 4 show an assembly tool 50 with dash-dotted lines. In the exemplary embodiment shown, the assembly tool 50 is an easily produced, linearly movable stamp which moves in the assembly direction 46 during assembly. In the view shown in FIG. 3, the end face of the assembly tool 50 facing the holding element 33 is adapted in shape to the intermediate piece 33c. If the assembly tool 50 is viewed in the viewing direction shown in FIG. 4, then it can be seen that the end face of the assembly tool 50 facing the holding element 33 is spherical in shape, so that the holding tabs 40a and 40a 'during assembly of the holding element 33 on the two bodies 1, 2 can be deformed elastically counter to the mounting direction 46 until the holding tabs 40, 40a 'can snap over the snap hooks 40b, 40b' in the course of the mounting. The mounting distance 44 is dimensioned such that the mounting tool 50 can actuate the holding element 33 in the mounting direction 46 until it is ensured that the holding tabs 40a, 40a 'are snapped over the snap hooks 40b, 40b'. As a result, the assembly can be ensured in a simple manner by a simple path control of the assembly tool 50. Monitoring of the force or monitoring of a torque, which would require complex sensors, is not necessary for safe process-monitored assembly in the solution proposed here.

As FIG. 4 shows, the holding element 33 can be designed such that the holding lugs 40a, 40a ', the snap hooks 40b, 40b' only by a very small amount overlap. This makes it possible for the mounting element 33 to be securely mounted on the bodies 1, 2 even with a small mounting distance 44.

The holding tabs 40a, 40a 'and the snap hooks 40b, 40b' are matched to one another in such a way that clearly visible traces are created when the holding element 33 is disassembled by force. You can carry out the holding element 33 so that, for example, the holding tab 40a gets a permanent visible kink in a violent disassembly. The bevels 40c, 40c ¹ facilitate the mounting of the holding element 33. The bevels 40c, 40c 'make it possible to mount the holding element 33 without permanent plastic deformations of the holding element 33.

In FIGS. 3 to 6 it can be seen that the holding element 33 is sunk so far into the bodies 1 and 2 that there is no possibility, with a customary, normally obtainable tool, of lifting the holding element 33 off the bodies 1, 2. In particular, the holding surfaces 31, 32 are recessed in the body 1 or in the body 2. The access protection 36 is formed by the at least partial recessing of the holding element 33.

The at least partial countersinking of the holding element 33 also results in the positioning 38. This makes it possible for the holding element 33 to be securely mounted even when using a simple tool which is guided with little effort, both in manual or semi-automatic as well as in fully automatic installation in the exactly intended position.

As FIG. 6 shows, a plurality of holding elements 33 can be arranged next to one another. In the selected exemplary embodiment, the body 1 encloses the housing space 18 (FIG. 2). One can over the entire circumference, where the two bodies 1 and 2 are held against each other A plurality of the holding elements 33 may be arranged. The holding elements 33 can easily be made much smaller than they are shown in the present drawing. In the direction of the circumference of the cover 2, the holding elements 33 are relatively long, and transverse to the circumference of the cover 2, the holding elements 33 are relatively narrow. By arranging several holding elements 33 at a short distance, a very uniform force distribution between the two bodies 1 and 2 results, and because of the narrow dimension transversely to the circumference, the throttle valve actuating unit 3 can be made small and space-saving. The elongated design of the holding elements 33 essentially ensures an even distribution of force.

FIG. 7 shows an example of a section of another selected, particularly advantageous embodiment of the clamping bracket 30.

Unless otherwise stated or shown in the drawing, that which is mentioned and illustrated with reference to one of the figures also applies to the other exemplary embodiments. Unless otherwise stated in the explanations, the details of the various exemplary embodiments can be combined with one another.

In the embodiment shown in FIG. 3, the two holding surfaces 31 and 32 run essentially parallel to one another. As shown in FIG. 7, when viewed in the mounting direction 46, the two holding surfaces 31 and 32 can also run divergently from one another. A curved, essentially divergent course of the two holding surfaces 31, 32 is also possible.

Even if the two holding surfaces 31, 32 are less divergent from one another than shown in FIG. 7, ie only slightly divergent, this simplifies the casting of the bodies 1 and 2 essential. The holding device 40 ensures that the holding element 33 cannot slide off the holding surfaces 31, 32, ie from the two bodies 1 and 2, even with diverging holding surfaces 31, 32.

FIGS. 8 to 12 show different views of the holding element 33.

FIG. 8 shows an end view of the holding element 33 with the same viewing direction as in FIG. 3. FIG. 9 shows a top view of the holding element 33 with viewing direction IX (FIG. 8). A section of the plane X-X can be seen in FIG. 10 (FIG. 9). FIG. 11 shows a side view of the holding element 33 with viewing direction XI (FIG. 10). FIG. 12 shows a longitudinal section of the plane XII-XII (FIG. 10).

In the area of the intermediate piece 33c of the holding element 33 there are four slots 33d, 33e, 33d 'and 33e' (FIGS. 8, 9, 10). The slots 33d, 33e cause the retaining lug 40a to yield elastically during the assembly of the retaining element 33 in order to snap over the snap hook 40b (FIG. 4) when the assembly tool 50 is pressed further in the assembly direction 46. The same also applies to the holding lug 40a ', the elasticity of which is significantly improved by the slots 33d', 33e '.

When the holding element 33 is viewed from the front, as shown in FIG. 8, one can see a curved course of the connecting element connecting the two tensioning arms 33a, 33b

Intermediate piece 33c. The elasticity of the holding element 33 is significantly improved by the curved course of the intermediate piece 33c. The holding element 33 is thereby significantly softer overall in the tensioning direction. The improved elasticity of the holding element 33 ensures that the two bodies 1, 2 are held by the holding element, even when there are clear signs of settling in the area of the bodies 1, 2 33 continue to be pressed against each other with sufficient force. The high elasticity of the holding element 33 ensures that, even with an unfavorable tolerance position, the force with which the two bodies 1, 2 are pressed against one another is not too great and not too small. Openings 33f, 33f, 33g, 33g 'additionally significantly improve the elasticity or softness of the holding element 33. The openings 33f, 33f, 33g, 33g ¹ extend partially into the area of the tensioning arms 33a, 33b and partially into the area of the intermediate piece 33c. The

Holding element 33 is preferably made of sheet metal material by means of stamping and bending technology. Because of the curved shape of the intermediate piece 33c and because of the slots 33d, 33d ', 33e, 33e' and the openings 33f, 33f, 33g, 33g ', a holding element 33 is obtained for holding the two bodies 1 and 2 together, which is sufficiently soft-elastic is. By appropriate choice of the size of the openings 33f, 33f, 33g, 33g 'or the curvature of the intermediate piece 33c, the holding element 33 can be made more or less elastic. This advantageously eliminates the need to use a particularly thin sheet metal material, which would cause manufacturing problems.

FIG. 13 shows a selected, further, particularly advantageous exemplary embodiment.

FIG. 13 shows a section through the clamping bracket 30. The section plane and the viewing direction is the same as that of FIG. 4.

In FIG. 13 there is a clamping surface 40d and a clamping surface 40d 'on the body 1. The clamping surface 40d extends substantially perpendicular to the body side la when viewed in the direction shown in FIG. 13. Correspondingly, the clamping surface 40d 'extends essentially perpendicular to the body side la. The two clamping surfaces 40d, 40d 'thus run essentially parallel to one another. at In the view shown in FIG. 13, the body side la forms a kind of groove together with the clamping surfaces 40d and 40d '. The distance between the two clamping surfaces 40d and 40d 'is smaller than the distance between the two outer ends of the two holding tabs 40a, 40a' facing away from one another before the holding element 33 is clamped between the clamping surfaces 40d, 40d '. In this exemplary embodiment, the clamping surfaces 40d, 40d 'are part of the securing device 40.

At the ends of the clamping surfaces 40d, 40d 'facing away from the body side la there is a slope 40e and 40e'. The bevels 40e and 40e 'ensure that the holding element 33 can be clamped between the two clamping surfaces 40d, 40d' without unwanted damage. For assembly or

Clamping the holding element 33 between the clamping surfaces 40d, 40d 'presses the mounting tool 50 in the mounting direction 46 (arrow) onto the intermediate piece 33c of the holding element 33. As a result, the holding element 33 is clamped between the clamping surfaces 40d, 40d', due to the elasticity of the

Holding tabs 40a, 40a ', press the holding tabs 40a, 40a' outward onto the clamping surfaces 40d, 40d '. Since the holding tabs 40a, 40a 'are bent backwards against the mounting direction 46, even after assembly, the holding element 33 can be moved in the mounting direction 46 without any problems, but movement in the opposite direction is not possible because the holding tabs 40a, Clamp 40a 'in the clamping surfaces 40d, 40d'. The holding element 33 can be moved in the mounting direction 46 with the aid of the mounting tool 50 until the holding element 33 on the

Body side la comes to the plant. In the embodiment shown in FIG. 13, the assembly distance 44 (FIGS. 3, 4, 7) shown in the other embodiments can be dispensed with.

When the holding element 33 is disassembled, the holding lugs 40a, 40a ¹ (FIG. 13) are compressed, as a result of which the Fold in the holding tabs and / or fold, which can be easily recognized when inspected. As a result, an unauthorized opening of the housing space 18 (FIG. 2) can be easily determined and verified at a glance.

The holding element 33 is preferably made of hardened spring steel and the body 1 is made of a material that is significantly softer than the material of the holding element 33. The body 1 is made, for example, of aluminum or plastic. Since the material of the holding element 33 is much harder than the material of the body 1, the holding tabs 40a, 40a ¹ dig into the clamping surfaces 40d, 40d '. This significantly increases the holding effect of the holding device 40.

FIG. 14 shows another selected, particularly advantageous exemplary embodiment.

FIG. 14 shows a section through the clamping bracket 30, which corresponds approximately to the position shown in FIG. 4.

As explained with reference to the exemplary embodiment shown in FIG. 13, the holding tab is also supported in the exemplary embodiment shown in FIG

40a on the clamping surface 40d. Accordingly, the holding tab 40a 'is supported on the clamping surface 40d'. The holding element 33 is clamped between the two clamping surfaces 40d, 40d 'via the two holding tabs 40a, 40a'. Since the holding lugs 40a, 40a 'are wider at their outer ends than the distance between the two clamping surfaces 40d, 40d', the holding element 33 retains the curved shape shown in FIG. 14 in the region of the holding lugs 40a, 40a '. As a result, the holding element 33 can only be moved in the mounting direction 46, but in the event of a violent rearward movement against the mounting direction 46, the holding tabs 40a, 40a 'deform permanent and / or there are clearly visible impressions in the clamping surfaces 40d, 40d ', so that unauthorized dismantling of the holding element 33 can easily be determined optically, even if the holding element 33 was remounted after the dismantling. As additional security, the snap hooks 40b, 40b 'are provided in the exemplary embodiment shown in FIG. 14, which in any case additionally prevent the holding element 33 from slipping off or being levered off from the bodies 1, 2. In order to ensure that the holding tabs 40a, 40a 'snap over the snap hooks 40b, 40b', the small mounting distance 44 is provided between the intermediate piece 33c and the body side la. Because of the sufficient recognition in the drawing, the snap hooks 40b, 40b 'are shown relatively large in picture. The snap hooks 40b, 40b 'can, however, be very small, ie in principle a small, almost inconspicuous projection is sufficient as a snap hook.

In the illustrated embodiments, the

Holding device 40 is symmetrical, d. H. There is a holding tab 40a, 40a 'on each of the two long sides of the holding element, which is supported on a snap hook 40b, 40b' and / or a clamping surface 40d, 40d '. It is possible to provide the holding device 40 provided outside the two clamping areas 41, 42, for example, only with a holding tab, which is supported at a corresponding point on the body 1 or 2. The holding element 33 can also be provided with more than two holding lugs serving as a securing means.

In the embodiments selected as examples for the drawing, the snap hooks 40b, 40b 'or the clamping surfaces 40d, 40d' of the retaining lock 40 on the throttle valve connector 1 or first body 1 are provided. It should be noted that the snap hooks and the clamping surfaces over the dividing line between the two bodies 1 and 2 can extend. That is, , The snap hooks or clamping surfaces can be provided on both bodies 1 and 2 held together.

As mentioned, the holding element 33 can be designed in such a way that permanent traces remain on the holding element 33 when attempting to disassemble the holding element 33. Since an appropriately shaped embossing tool is required to produce the holding element 33, attempted dismantling cannot be covered up with reasonable effort. If an attempted dismantling of the holding element 33 is to be demonstrated, it can be ensured that the holding element 33 cannot be obtained as a separate part by third parties.

In the illustrated exemplary embodiments, the two bodies 1 and 2 or the throttle valve connector 1 and the cover 2 are held together. It is also possible for more than two bodies to be clamped and held together between a holding element.

As mentioned, the clamping bracket 30 is particularly useful when holding the cover 2 together with the throttle valve connector 1 in the described throttle valve actuating unit 3. It should also be mentioned that the presented clamp bracket 30 also for holding other bodies together, e.g. B. is preferably suitable for holding a throttle valve body on the cylinder head of an internal combustion engine.

Claims

claims

1. clamp holder (30) with a holding element (33), a first body (1) and a second body (2), the two bodies being held against one another by the holding element, each of the two bodies each having a holding surface and the holding element in a first clamping area has a first clamping arm pressing against the holding surface of the first body and in a second clamping area a second clamping arm pressing against the holding surface of the second body, characterized in that outside the first clamping area (41) and outside the second clamping area (42) between the holding element (33) and at least one of the two bodies (1, 2) acting securing device (40) is provided.

2. Clamping bracket according to claim 1, characterized in that the holding element (33) comprises an intermediate piece (33c) connecting the two clamping arms (33a, 33b) and the securing means (40) is provided in the region of the intermediate piece (33c).

3. Clamping bracket according to claim 1 or 2, characterized in that the securing means (40) is formed by at least one holding tab (40a, 40b) provided on the holding element (33), which in the assembled state has one on at least one of the bodies (1, 2nd ) provided behind the snap hook (40b, 40b ').

4. Clamping bracket according to one of the preceding claims, characterized in that the securing means (40) is formed by at least one holding lug (40a, 40a ') provided on the holding element (33), which counteracts in the assembled state at least one clamping surface (40d, 40d ') provided on at least one of the bodies (1, 2).

5. Clamping bracket according to one of the preceding claims, characterized in that an assembly of the holding element (33) on the body (1, 2) can be done without a tension increase.

6. Clamping bracket according to one of the preceding claims, characterized in that the holding surface (31) of the first

Body (1) and the holding surface (32) of the second body (2) run parallel to each other.

7. Clamping bracket according to one of the preceding claims, characterized in that between the holding element (33) and at least one of the body (1, 2) a position (38) determining the position of the holding element (33) is provided.

8. Clamping bracket according to one of the preceding claims, characterized in that the securing means (40) of the holding element (33) works largely independently of a clamping force of the holding element (33) holding the two bodies (1, 2) together.