DE1289365B - Fastening arrangement z. B. for moldings on metal surfaces and methods for their attachment - Google Patents

Description

1 2

The invention relates to a fastening arrangement. The method for fastening a decorative strip to z. B. for moldings on metal surfaces that consist of a metal surface with the above-described The holding element according to the invention that is welded or benen to the metal surface therefore looks like this glued connector pin and one on it bayonet from that welded to one on the surface like latched holding element consists. Above 5 or glued-on connector pins a retaining element In addition, the invention relates to a method, latched like a bayonet and by one of the according to which a decorative strip or the like using decorative strip on one of the side surfaces of the guide mentioned holding element on a metal upper part of the pressure exerted with respect to the decorative strip is to be attached. is directed, whereupon this is pressed via the holding-attaching of components to metal io element and thus attached to this. Surfaces by means of a bayonet lock on the Further details of the invention are in the Component and one of the subclaims on the metal surface, attached connector pin is known. Beyond this, the invention is based on exemplary embodiments Snap-in bayonet fittings are also explained in more detail below. Show it known. 15 Fig. IA, IB, IC and ID a motor vehicle for Fastening of trim strips to the car body during four processing stages for annen one has already made of plastic holding fixtures of decorative strips according to the present invention elements used that run in parallel with two - invention,

the undercuts are provided, in which F i g. 2 one according to the clubs according to the invention 20 to be pressed onto such a holding element travel on a motor vehicle body according to FIG. 1A

Trim strip clicks into place. These retaining elements have attached plug pins in partial section,

a pin that goes into a hole in the body F i g. 3 the head according to FIG. 2 in axial section

wall is pressed in and is fixed in this implementation of the process step according to

stuck. To now a trim strip by means of such Fig. IB,

To attach retaining elements to a body, 25 F i g. 4 one attached to a body

the retaining elements must precisely align with the course of the connector pins with a retaining

Trim be aligned so that the trim element according to the process step according to

can even press over the holding elements. This F i g. 1C,

either requires special attention F i g. 5 two holding elements according to the invention for the purpose of pressing in the holding elements 30 in the correct position, they are attached to plug bolts on the body or their subsequent alignment, which is the case with the area according to the process step Assembling a car body a significant figure. 1C in plan view,

This represents a disadvantage, since in this assembly in FIG. 6 there is an exemplary embodiment of a holding outermost Rationalization matters. elements according to the invention in perspective

The invention has set itself the task of the 35 representation as well as in view from above, to avoid the disadvantage mentioned above and FIG. 7 the holding element according to FIG. 6 in perspective To facilitate the assembly of moldings or the like. tivic representation as well as in view from below, This is done on the basis of the at the F i g. 8 shows a section from a motor vehicle connector pin Bayonet-like latched holding body, with a holding element according to the invention according to the invention in that the front element in the left part of the figure hangs freely and Preferably molded from elastic plastic holding in the right part of the figure in an approximately end element is made up of a leadership part and a valid position,

this with respect to the decorative strip alignable holding F i g. 9 the holding element according to FIG. 6 to 8 in

part for the decorative strip, with guide part and top view as well as in an enlarged view,

Holding part inclined, mutually aligned side 45 Fig. 10 is a section along the line 5-5 of

have areas. F i g. 9,

When these holding elements are placed on FIG. 11, a section along the line 6-6 of

It is not necessary for the plug pin to hold the F i g. 9 with a mounted on a holding element

elements an exact position with regard to the th trim,

Direction of the decorative strip, i.e. the retaining 50 Fig. 12 is a section along the line 7-7 of

elements only need approximately in the later F i g. 9 with an attached to the retaining element

Direction of the trim. This approximate trim,

Alignment is no problem at all- F i g. 13 a to be attached to a body,

opportunities, since when the retaining elements snap into place, they belong to the arrangement according to the invention

approximate direction readily taken into account 55 connector pins in side view,

can be. In the process of attaching F i g. 14 an embodiment of an inventive

On the other hand, the holding elements do not need any suitable holding element in a perspective view

to be exercised special care, d. that is, this from above according to the embodiment

The work step is thus to the minimum time required. 5,

dernis reduced. If the decorative strip is now placed on the 60 Fig. 15 the holding element according to Fig. 14 in plan

for example, looks at a slight slant to the decorative strip,

If the holding element is pressed, the guide part causes a section along the line 11-11 of FIG. 16

of the holding element automatically its alignment F i g. 15,

on the decorative strip, so that this is now a section along the line 12-12 of FIG. 17

Can securely attach holding part of the holding element. 65 Fig. 15 together with a holder shown therein

This results in a trim strip attached to the position of the element.

Technology greatly simplified operation of the According to FIGS. 1 to 5, a motor vehicle

Attaching a decorative strip. body 5 along a (not shown) transport

tape transported from one processing station to another; the individual stations are identified by the index letters A, B, C and D in FIG. In the processing station A, a group welder 6 welds several plug bolts 122 (see also FIG. 2) onto a surface area 130 of the body 5 in such a way that the plug bolts 122 are completely united with the surface area 130 of the body. The local position of the bolts 122 is critical and is determined before the welding process in such a way that the plug bolts are located at predetermined points on the body 5. At station A , the surface of the body remains untreated.

In station B , the body 5 and the connector pins 122 welded to it are completely coated with a layer of paint 8 by spray guns 7, which completely covers the body 5 and the connector pins 122, as can be seen in particular from FIG. 3 emerges. The coat of paint seals any gaps between heads 122 and surface 130 of the body as a result of the welding process in station Λ.

In station C, a holding element 110 is placed over each of the plug pins 122. The design of the holding elements 110 is described in more detail below; It should already be mentioned here that the holding elements, by virtue of their special design, make it possible to press on decorative strips 138 in station D , the decorative strips 138 being firmly seated on the body 5. A more precise view of the holding elements 110 when they are placed on the body 5 in station D is shown in FIG. 5, the arrows indicating the direction in which the holding elements 110 move after the decorative strips 138 have been applied, so that the holding elements are precisely aligned before the final application of the decorative strip.

Of course, further surface treatment processes can be carried out between stations B and C, for example sandblasting and / or grinding. Furthermore, intermediate machining operations can of course be carried out in order to machine the body, but these method steps are not included in the present description for the sake of simplicity.

The plug pins 122 are small and have a diameter of about 5 mm and a height of about 4 mm at their head end; the diameter of the shaft of the head is less than half the diameter of the head. Due to their small and smooth-surfaced design (see FIGS. 2 and 3), these plug pins are located close to the body surface 130 and only cause little disruption to the processing operations, for example the paint spraying in station B, which must be carried out with respect to the surfaces of the body .

In Fig. 6-10 is an embodiment of a retaining element according to the present invention shown. The holding element 10 comprises a base body 12, which by separating slots 66 of full Depth is separated from a guide part 14; the guide part 14 is here with the base body made in one piece and extends in the longitudinal direction of this. As in particular from the cross-sectional view 11 and 12 as can be seen in FIGS. 11 and 12, the base body 12 is essentially frustoconical Side surfaces 50 and substantially parallel side surfaces 52, the surfaces 52 are undercut at their bases and form undercuts 42, 44. In one piece with the body 12 and tongues 16 are connected thereto adjacent to the undercuts 42, 44 which extend outwardly and transversely to the base body 12. The tongues 16 run essentially at an angle of 45 °

ίο to the base of the body 12 when they are are in the undeflected position according to FIGS.

The guide part 14 comprises converging side surfaces 32, which according to FIG. 6 and 7 of the Diverge top to the base of the guide member 14 and also to form a blunt Converge nose 40.

The base body 12 and the guide part 14 are through on their upper and lower surfaces

ao common incisions incised. An intermediate wall within the incisions results in accordance with F i g. 6 and 7 a head seat 26 which forms an opening in its inner part; within this opening can be attached to the shaft of the head. The head seat 26 is within the main body 12 is attached, and there is a widened hole 24 in the guide member 14 is provided. A Slot 18 extends between and stands with the opening within head seat 26 as well the hole 24 in connection. Two stop surfaces 20 are located on each side of the slot 18 which rise steadily from the adjacent hole 24 to the head seat 26. Where the Stop surfaces 20 reach the head seat 26, these are provided with stops 70.

According to FIGS. 11 and 12, the common base 60 is the base body 12 and the guide part 14 concave, the apex of which is located in the center 68 according to FIG. The concave base 60 results two longitudinally extending ribs 28, 28 which abut against the body region 30 when the holding element is in its position on the body 5. Longitudinal grooves 64, 64 are next to the Ribs 28, 28 are provided and separate the tongues 16 from the ribs 28.

A plug pin 22 is illustrated particularly clearly in FIG. 13; the connector pin shown here contains a base part 25 for welding to the surface area 30 of the body, a neck section 23 and a head section 27 with an underside 29. Those on the body areas 30 The decorative strip to be attached by the holding elements 10 is illustrated by the reference numeral 38 in FIGS. 11 and 12; this decorative strip 38 has an essentially U-shaped channel section on the inside facing, opposite flanges 34, 36, through which the decorative strip 38 is to be attached to the holding elements 10.

For fastening the trim strip 38 on a body area 30 after the connector pins 22 have been welded on, a retaining element 10 is attached over a connector pin 22 by inserting it through the Hole 24 is inserted; the hole 24 is sufficiently wide to accommodate the head section 27 of the plug pin 22 to record. This fact is even clearer from FIG. 9 to see where a comparison of mutual Dimensions of the hole 24 and the head portion of the plug pin 22 is given.

5 6

The holding element 10 is then opposite that of the surface 31 and thus allow a da-

Plug pin 22 moved so that this is from between taking place air circulation to the evaporator

away from the hole 24 along the slot 18 and to the fen of moisture and to achieve corrosion

Head seat 26 moved towards, i.e. against the sion resistance shown in Fig. 9.

and 10 position shown. During this 5 When the decorative strip 38 is pressed over the holding

Movement slides the underside 29 of the head 27 along the members 10, it is not necessary that the holding members

of the guides 20, bends them and causes a total to be aligned prior to this process. the

Pressing process between the holding element 10 and holding members 10 can thus for example in the

the head section 27 of the connector pin 22. This position according to FIG. 5 can be arranged where it is

The pressing process has the effect that the ribs 28, 28 of the io are somewhat out of alignment and in the direction

Holding member 10 in contact with the surface 31 of the device according to the arrows of FIG. 5 can be moved

Body section 30 are pressed and have to be pressed against in order to obtain an exact orientation for the purpose of

attack side. When the head portion 27 of the bring the trim to effect. If the

Plug bolt 22 the head seat 26 of the holding member 10 holding members 10 in the position according to FIG. 5 are located,

reached, the head section 27 runs over the attachment 15, an application of the decorative strip 38 has the effect of

striking surfaces 20, the underside 29 of the head - that the holding members 10 in their correct positions

section 27 strikes against the head seat 26 and pressed. This process takes place as a result of the

rests on this, and the head is shaped as shown in FIG. 9 instead of the guide part 14, the side of which

and 10 held close to the holding member 10, with surfaces 32 converging to form a blunt nose 40

the stops 70 a return movement of the plug ao and the stop surfaces for the opposite

form bolt 22 relative to the holding member 10 along the flange 34,36 of the decorative strip 38.

Prevent slot 18. When the opposite flanges 34,36 at

In the position according to FIG. 9 and 10 as well as in the side surfaces 32 of the guide part 14

11 and 12 and sit on these, the guide part 14 of

the plug pin 22 has the effect that it moves the retaining 35 away from the flange 34 or 36, so that with it

member 10 resiliently in contact with the body - the holding member 10 in its correct position opposite

area 30 presses, the ribs 28, 28 only reaching the decorative strip 38. The side surfaces 32, which

of the holding member 10 in contact with the region 30, the stop surfaces for aligning the holding member

stand and form a frictional surface contact 10, point at their widest parts (next to

produce which a relative movement between 30 the separating slots 66) approximately the same total

the holding member and the body area have counter dimensions such as the undercuts 42, 44.

stood opposite. At the same time, the tongues are used to locate the flanges 34,

16, 16 from their normal deflection position of 45 ° 36 in the undercuts 42, 44 when fastening

deflected with respect to the base body 12 and the decorative strip 38 on the plug-in link 10.

strike at the surface 31 of the area 30 in 35. The separation slots 64, 64 of the base 60 are on the

the way in which it is fully extended in FIG. 11 connection of the tongues 60 to the base body 12

and 12 is shown. provided to avoid any action of preload

If the holding members 10 are now firmly seated on the tongues 16 on the behavior of the ribs 28, 28 connector pins 22, the decorative strips 38 can be attached 40 of the area 30 in the planar contact with the surface 31 on the holding members 10 to avoid. Thus, since the tongues become as shown in Figs. 16 are bent by about 45 ° from their basic position (according to the dashed lines in Fig. 11, the dashed lines in Fig. 11), the trim is first oriented so that its flange 34 can touch the body 12 well and that with the undercuts 42 of all retaining members 10 ribs 28, 28 from their surface contact with which interacts. When the flange 34 is lifted within the 45 surface 31 of the area 30. Since an undercut 42 is engaged, there is frictional contact between the ribs 28, 28 and the opposite side of the trim 38 over which the surface 31 is substantial, the separating semi-conical side 50 of the retaining member 10 (i.e., provided in slots 64, 64 around to compensate for any tension in the direction of the dashed arrow in FIG. 11) due to the deflection of the tongues 16,
presses so that the flange 36 over the semi-conical so The separating slots 66, 66, which migrate down the base body surface 50 and over the side 52, divide up to 12 of the guide part 14, are also seen in the front in the undercuts 42, 44 of the holding members, to ensure that a deflection 10 takes place. Thereafter, the tongues 16 shown in FIG. Which is effectively spring-loaded, with an incave shape of the base 60 of the holding member 10, the grip of the holding member 10 being framed between the opposing ribs 28, 28, resulting in set flanges 34, 36 of the decorative strip. The particularly stable arrangement and prevents a shape of the undercuts 42, 44 prevents a displacement of the holding member 10 with respect to the slight backward movement of the decorative strip 38 from the 60 area 30.

Holding members 10. The tongues 16 are between the According to FIGS. 11 to 13, the plug pin 22 engages Ornamental strips 38 and the surface 31 of the area 30 on the retaining member 10 in two ways; it arranged and prevent contact between, once a substantially horizontal seat lies between these Subdivide so that an electrolyte process intervenes in the bottom surface 29 of the head section 27 provide these members as a result of a contact 65 of the connector pin 22 on the head seat 26 and of metals in the presence of rain and furthermore a substantially vertical friction water cannot occur. The tongues 16 engage with the neck 23 of the plug pin 22 also act a spacing of the trim 38 the vertical side surfaces of the opening, which

is formed within the head seat 26 . This double frictional engagement of the holding member 10 with the plug pin 22 results in an adequate clamping effect to hold the holding member 10 in frictional engagement with the surface 31 and to prevent relative movement therefrom when the holding member is in its final position, with the decorative strip 38 being attached to it.

The holding members 10 are preferably made of non-metallic! Material, for example synthetic resin under the names »Nylon«, »CELCOM« or »Delrin«, whereby these fabrics can also be reinforced with fiber inserts if required. The retaining members 10 can also consist of ultraviolet stabilized polypropylene or other suitable synthetic resin.

The plug pin 22 shown in FIG. 6 to 13 has a shank 23 with about 2 mm (0.08 inches) in diameter, and the slit 18 of the holding member 10 has a width of likewise 2 mm (0.08 inch) to the Grip around the shaft with friction. The trim 38 is made of metal 0.9 mm (0.035 inches) thick and has a height from surface 31 on the order of 10 mm (0.41 inches). The semi-conical side 50 of the retaining member 10 is 0.13 to 0.75 mm (0.005 to 0.03 inches) in length with the tongue 16 being about 0.25 mm (0.01 inches) thick. Using elements of these dimensions, it has been found that the head seat 26 deflects inwardly against the area 30 up to 0.13 mm (0.005 inches) with the ribs 28, 28 of the retaining members 10 in frictional contact with the base 31 of the area 30 presses.

According to FIGS. 14 to 17, the holding member according to FIGS. 1 to 5 is shown in more detail. The holding member according to FIGS. 14 to 17 is very simple compared to that according to FIG. 6 to 13 executed; For this reason, similar reference numerals are used for similar component sections and components, but in such a way that in the embodiment according to FIGS. 14 to 17 reference numerals from 100 upwards are used.

The main differences between the support member of FIG. 6 to 13 and that of FIG. 14 to 17 are made enteric that in the holding member of FIG. 14 to 17 the abutment surfaces 120 that define the slot 118 through the top surfaces of the two spring fingers 172 which are assigned to the side walls of the guide part 114 (ie the inner surfaces of the walls 132). The design is best shown in FIG. 15, according to which the surfaces 171 of the spring fingers 172 form the slot 118 therebetween, the surfaces 171 effectively forming converging resilient surfaces for the slot 118. The outer free ends of the spring fingers 172 form the stops 170, which prevent the head section 127 of the plug bolt 122 from being released from the head seat 126 once the head section is in its end position.

Another difference between holding members according to FIGS. 6 to 13 and 14 to 17 is that the holding member according to FIGS. 14 to 17 is provided with an opening within the head seat 126 which extends transversely to the holding member 10 running in the longitudinal direction. The transverse dimension of the opening can be seen most clearly from FIG. 15, where three positions of the plug pin 122 are shown in broken lines in the right part thereof.

During the attachment of the holding element 110 of Fig. 14 to 17 of the head portion of the plug pin inserted 122 through the hole 124 and then the holding member 110 over the plug pin 122 is slidably displaced in that the shank of the bolt enters through the converging slit 118 122. The shank of the plug pin 122 presses the spring fingers 172 apart and at the same time bends the stop surfaces 120 in such a way that the ribs 128, 128 of the holding member 110 are pressed into contact with the surface 131 of the region 130. When the head portion 127 has passed through the abutment surfaces 120, it abuts against the head seat 126, and the stops 170 prevent slipping of the head from the head seat 126th

The elongated opening within the copy seat 126 enables the holding element to be adjusted laterally.

_ao tes 10 compared to the plug pin 122 even when the head seat 126 is located. This is useful if the plug pin 122 was not attached precisely by welding onto the surface 131 in station A according to FIG. 1. When arriving

_a5 order according to FIGS. 6 to 13, it is not possible to move the holding member laterally once the plug pin 122 has been welded onto the surface 31 of the body region 30; In this way, an impermissible tension on the holding member 10 or the decorative strip 38 could possibly arise,

when these components are put together. In the case of the holding member according to FIGS. 14 to 17, this is Disadvantage prevented.

The invention explained above can also be used to equip refrigerators, stoves, and office machines and electronic devices in the same way as for attaching decorative strips Motor vehicle bodies are used.

Claims (11)

Patent claims: 1. Fastening arrangement z. B. for decorative strips on metal surfaces, consisting of a connector bolt welded or glued to the metal surface and a retaining element latched onto it like a bayonet, characterized in that the retaining element (10, 110) , which is preferably made of elastic plastic, consists of a guide part (14, 114) and one of this holding part (12, 112) for the decorative strip (38, 138) which can be aligned with respect to the decorative strip (38, 138) , wherein the guide part (14, 114) and holding part (12, 112) inclined, mutually aligned side surfaces (32, 50; 132, 150) . 2. Holding element according to claim 1, characterized in that a vertical separating slot (66, 166) is provided between the guide part (14, 114) and the holding part (12, 112). 3. Holding element according to claim 1 or 2, characterized in that in the guide part (14, 114) a hole (24, 124) for inserting a head (27, 127) of the plug pin (22, 122) is provided, which is through a Slot (18, 118) is connected to a head seat (26, 126) in the holding part (12, 112) , and that the slot (18, 118) in the area of the head seat (26, 126) is no wider than the diameter of the shaft (23, 909507/1295 123) of the plug pin (22, 122) and rising in the direction of the head seat (26,126) Guides (20,120) is limited, which fall vertically (70,170) in front of the head seat (26,126). 4. Holding element according to claim 3, characterized in that the slot (118) in the area of the head seat (126) runs transversely to the holding part (112). 5. Holding element according to claim 3 or 4, characterized in that the guides (120) are formed by resilient fingers (172). 6. Holding element according to one of the preceding claims, characterized in that it has a known concave base (60,160), the arc of which is transverse to the length of the holding element (10.110) extends and is delimited in the region of the holding part (12, 112) by ribs (28, 128) is. 7. Holding element according to claim 6, characterized in that between the ribs (28,128) and undercuts known per se (42, 44; 142, 144) in the holding part (12, 112) tongues (16, 116) are provided. 8. Holding element according to one of the preceding claims, characterized in that the largest width of the guide part (14,114) is not greater than the width of the holding part (12,112) between the undercuts (42,44,142,144). 9. Holding element according to one of the preceding claims, characterized in that the Guide part (14,114) is tapered at its end facing away from the holding part (12, 112). 10. Holding element according to one of claims 6 to 9, characterized in that the distance between the head seat (26, 126) and the bottom of the ribs (28, 128) is not greater than the distance between the lower surface (29) of the plug bolt head (27 , 127) and the metal surface (30,130). 11. Method of attaching a decorative strip to a metal surface with a retaining element according to one of the preceding claims, characterized in that on one of the Surface (30,130) welded or glued plug pins (22,122) a holding element (10, 110) latched like a bayonet and by one of the decorative strip (38,138) on one of the Side surfaces (32, 132) of the guide part (14, 114) exerted pressure with respect to the decorative strip (38, 138) is aligned, whereupon this is pressed over the holding element (10,110) and thus is attached to this. For this purpose 2 sheets of drawings