DE8213153U1 - Device for releasable connection, in particular of housing parts made of plastic for electrical household appliances - Google Patents

Description

"Device for releasable connection, in particular of ge |, · Housing parts made of plastic for electrical household appliances "|

The invention is directed to a device for detachable | Ren connecting housing parts, in particular housing | plastic parts of electrical household appliances.

Electrical household appliances come in a variety of designs, in particular, the devices with somewhat smaller dimensions are often housed in plastic housings are. For example, it can be vacuum cleaner housings, fan housings, housings for radio devices and the like. The invention here is not directed to any particular type of device limited. Such housings are usually designed in two parts, with one housing part on the other housing part can be screwed. Screw connections with screw and nut are just as common as screw connections, where a tapping screw cuts into reinforced plastic areas on the mating housing part or where threaded sockets are cast in a housing part and a screw from. other housing part can be screwed in there is.

The disadvantage of the known connection options the housing parts is that every screw connection has one represents additional cost share in the case production and the assembly is usually expensive.

The invention is based on the object of providing a solution create that dispenses with screw connections, whereby the The advantage of screw connections, namely that these represent releasable connections, should not be abandoned. With a device of the type mentioned above, this object is achieved according to the invention by at least one hook element sn sinsia housing part and one tendon appendix on the other Housing part, wherein at least one of the two elements an ramp is provided such that when Snapping together ensures that the alternative route is covered, solved.

The inventive design of the corresponding device elements for connecting the housing parts as Hook and snap element makes a screw-free, Ιδεί 5 bar connection of the housing parts possible. These only have to be pressed together in the position of use. The hook elements then engage behind the snap elements and the housing parts are fixed to one another.

It can be expedient that run-up ramps are provided on both corresponding elements, whereby the Assembly much simplified.

In a special design, the invention provides that whether Snap-in element as a sleeve made of plastic arranged in the housing with the interior of the housing open, the

bring a release tool enabling interior is formed with a locking surface that enables the locking of the corresponding hook element such that areas of the hook element protrude into the interior of the sleeve. This special design of the invention enables in a particularly simple manner by inserting a release tool, sB a pin c, the like -. * that the inwardly protruding area of the hook element can be ejected from the sleeve, thereby releasing the connection.

It can be useful if the sleeve-shaped snap element on the end face directed into the interior of the housing to form the latching surface to be gripped from behind by the hook element is closed in some areas, this design being very simple, especially in terms of injection molding.

It can be provided that the edge of the Latch opening indicating the end face of the sleeve-shaped Snap element is provided with a stop edge, which enables backlash-free locking.

The invention is illustrated below with reference to the drawing, for example explained in more detail. This shows in

Fig. 1 shows a hook element and a snap element according to the Invention in a dismantled state,

Fig »2 is a plan view of the hook element and in

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Fig. 3 is a plan view of the snap element.

A housing of an electrical household appliance, not shown in detail, for example a fan heater or the like, consists of two housing parts _{s in} front of which only wall areas are shown, namely one housing part 1 and the other housing part 2j which is in use, including the other components of the electrical household appliance are connected to one another. Hook elements 3 with a latching recess 4 and snap elements 5 with at least one latching surface serve as connecting elements

6, behind which the latching recess h can grip, as indicated by dashed lines in FIG. 1, lower half of the figure.

The hook element 3 is made in one piece from plastic on the housing part 1 molded on, just like the snap element 5 in one piece is formed on the housing part 2.

The hook element 3 consists of a web 7 protruding towards the inside of the housing, which has the latching recess k and is stabilized by reinforcing webs 8 running at right angles to the web 7.

The snap element 5 is designed as a plastic sleeve, as can be seen in particular from the plan view according to FIG. This sleeve is designed as a pocket sleeve, i.

it is closed _{3 at the} end face to the inside of the housing so that this end face represents the latching surface 6. Both the hasty surface 6 and the free end of the web 7 of the hook element 3 are provided with chamfers or bevels 9 or 10, which are intended to ensure easier joining of the housing halves 1 and 2.

If, for example, the housing part 1 is pressed onto the housing part 2 in the direction of the arrow 11, the first step is the ramp 9 ndt the ramp 10 in

IC touch. Due to the inherent rigidity of the hook element due to the reinforcing ribs 8, it is only shifted slightly out of its position. In contrast, the snap element 5 is pivoted into the position shown in dash-dotted lines near the double arrow 12. As soon as the hatch recess ^ has exceeded the front edge of the latching surface 6, the snap element 5 swings back into the nontal position shown in solid lines in FIG. 1 and engages with the latching surface 6 in the latching recess h . At the same time, the free end of the hook element 3 strikes a stop edge 13 on the hook element 5 », which prevents further insertion of the housing part 1 in the direction of arrow 11, ie both housing parts 1 and 2 are fixed to one another without play.

Of course, the embodiment of the ErfindiUng described is still alter in many Hinsishfe without the

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Leaving basic thoughts. In particular, the invention does not apply to the hook / snap connection shown limited. There are also other design options here the hook on the one hand and the sehnappeleiaenfces on the other possible.

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Claims (1)

PATENT LAWYERS MEINKE AND DABRINGHAUS ACCESS TO THE ELJRORSJSCHEN PATENT OFFICE - EUROPEAN PJSJBSiT ATTORNEYS ■ MANDATAIRES EN BREVETS EUROPEES DIPL-ING. J. ΜΞΝΚΕ DIPL-ING. W. DABRINGHAUS 460O DORTMUND 1, 4. Μάί 1S £ WESTtNHELLWEG 67 D / V TR FFON (Ο2 31) 14 SS10 TELEGRAM DOPAT Dortmund TELEX 822 7328 paid FILE NO; l4 / 408 Expectations : 1. Device for the detachable connection of housing parts, in particular / on housing parts made of plastic from electrical household appliances, characterized by at least one hook element (3) on one housing part and one Snap element (5) on the other housing part, with at least one of the two elements having an overrun ramp of this type it is provided that when snapping together the covering of the evasive path is guaranteed. 2. Apparatus according to claim 1, characterized in that on both corresponding elements run-up ramps (9, 10) are provided. 3. Apparatus according to claim 1 or 2, characterized in that the snap element (5) than arranged in the housing Sleeve made of plastic with opened, the introduction of a release tool enabling interior is designed with a locking surface (6), which enables the locking of the corresponding hook element in such a way that areas of the hook element in the Protrude inside the sleeve. H. Device according to claim 3, characterized in that the hülsenförsige Schnappelesient (5) sn exploding in cas housing interior facing end face to form the cross-Ras behind ^ surface from the hook element (3) (6) is closed in regions. 5. Apparatus according to claim U _3, characterized in that the edge of the end face of the hülsenförmxgen snap element (5) pointing towards the latching opening is provided with a stop edge (13).