DD218504A1 - SNAPPING DEVICE FOR THE LOADABLE CONNECTION OF TWO PARTS - Google Patents

Abstract

Snap device for releasable attachment of two parts, a lid with a housing or container, especially for small centrifugal pumps in consumer goods, such as washing or Geschirrspülmaschinen where the Pumpengehaeuse is attached to the end shield of the electric motor. The aim of the invention is to provide an attachment of both parts together, which is solvable and allows a permanent seal. The object of the invention is to design the construction elements so that a reduction of the cost of prefabrication and assembly and material savings arises. According to the invention, this object is achieved in that on the cover / pump housing resiliently designed clamping fingers with outwardly directed lugs by breakthrough of the Gehaeuses, container or bearing plate of an electric motor occur, which have a Schraege. When pressing on the cover / pump housing, the noses are pressed inwards with clamping fingers so that they snap outwards after they have penetrated through the openings. The solubility of the connection is facilitated by slotting on the nasal upper part of the clamping fingers. figure

Description

a) Title of the Invention ^N.

ι

Snap device for releasably securing two parts

b) Field of application of the invention

The invention relates to a releasable snap device for attaching a lid to a housing or container, in particular for small centrifugal pumps in consumer goods, such as washing machines or dishwashers, in which the pump housing is attached to the end shield of the electric motor.

c) Characteristic of the known technical solutions

Are known as releasable attachment screw, Henk or bayonet, wedge, staple or clamping ring connections ·

In the screw connections head screws are used, which require correspondingly large material thicknesses around the threaded hole and large screw-in lengths to avoid tearing the screws with sufficient certainty. The screws are an additional component. At the same time, there is a

Higher mounting time.

_; Renk- or bayonet connections require a high technological production cost. In addition, an increased load of the sealing material and / or the sliding surfaces by the Drehbewegung'der to

connecting ropes.

a MJUfCIa ¹ Un 9 η Π4 η

In wedge joints, as shown in the DB-GM 1 868 377, Yorsprunge be pressed over SeiIflachen, so that an axial contact pressure. With equal or little different material hardness occurs by resiliency of the clamping plate

a relaxation of the axial pressure. It is known from DB-OS 2 557391 a connection by means of clamping straps with two bending axes, of which the first is further away from the point of application of the bending force, as the second and a smaller

Bending resistance to the bending force than the second bending axis. <-

    A disadvantage is the technological complexity of the

- .. the position of the KIe mml-aa before η and the narrowing of the

reversible material. , ,

It is further known from DE-AS 2 037 993 a

, '.,' bond, in which the housing has clamping tabs, the

through breakthroughs of the bearing plate kick and be crimped. The technology of making the connection requires high dimensional accuracy and is not complicated

ed. A new connection after solution of the parts is not possible.

It is also known from DE-OS 2,229,345 and the. DE-OS 3 118 415 the connection of two parts by means of spring clip. Again, for the to be connected

Parts for holding the metal brackets a high technological effort required. Further known from the CS patents Hr, 500 880 and 614 416 compounds by Spannreifenverschiusses with a lever pivoting device

or with snap closure for sealing purposes, but which can absorb only small axial forces.

d) Object of the invention

The aim of the invention is to provide a fastening which eliminates the known disadvantages.

e) Presentation of the essence of the invention

The object of the invention is to mitein the

To arrange other parts to be fastened so that a simple, detachable and long-term secure and tight connection is obtained, Erfindagemäß the object is achieved in that there are resilient clamping fingers on a lid,

when they are pushed to the opposite, they slip through breakthroughs, the breakthroughs of the opposite

, partly after the outer edge towards the lid

have an outwardly directed slope, the resilient clamping finger is thereby pressed inward

and after passing through the breakthrough snaps to the outside and connects by a clamp finger outwardly arranged nose both parts firmly together »The nose of the KIemmfingers is designed so that the" opposite to the opposite side a small

Oblique, which tapers the nose outward, and when releasing the connection by the clamping finger is pressed inwards, through the taper of the nose a material-saving separation of the parts is possible.

Preferably, 3 clamping fingers are provided, which are arranged so that the separation process is possible by binding a clamping finger. For reasons of a uniform contact pressure over the circumference of the connection, a uniform displacement of the clamping fingers to each other is desirable.

The cross section of; Clamping fingers and the openings can be square, rectangular or ala part of a circular ring be designed »The clamping fingers on the lid can be made of one piece or detachably connected to it

be and that by, a constant or tapered cross section and rounded transitions to the lid, a resilient effect of the clamping fingers is achieved · A symmetrical arrangement of the clamping fingers causes the same time the centering of

connecting parts to each other.

For sealing the parts to be joined, they may be provided with or without Dichtnuten-, wherein the seal may be formed so that a rigid or non-rigid connection of au connecting parts

entry.

f) embodiment, · .. '

The invention will be explained in more detail below with reference to an exemplary embodiment. The drawing shows the connection of the pump housing

ses 1, a centrifugal pump for consumer goods with the bearing plate 2 of an electric motor.

In the bearing plate 2, the bearing plate apertures 5 are arranged, through which the clamping fingers 6 of the

25. Pump housing 1 when pressing the same on the

Slide end shield 2. By arranged on the outside of the bearing plate apertures 5 bevel the clamping fingers are pressed ο with the rabbits thereon inwards and snap after penetrating the bearing plate openings 5 on the slope

the nose outward and provide the releasable fixed or if necessary by means of the seal 5 resilient attachment between the pump housing 1 and the bearing plate 2 ago.

When loosening the attachment is bei.einer arrangement

of 3 clamping fingers 6 a clamping finger 6 pressed inwards and at the same time by a separating ^! Train on the pump housing 1 by sliding the KIemmfinger 6 through the bearing plate openings 5 causes by the slope on the nose of the

Clamping finger 6 is initiated.

Claims (7)

Claim: 1. snap device for securing a cover to a housing, in particular for small impeller pumps in consumer goods, such as wash or _f Geschirrspulmaschinen in which the pump housing with the Bearing shield of the electric motor is connected, characterized in that on a cover / pump housing (1) resilient clamping fingers (6) are, these slide when pressed onto a housing / end shield (2) by Durchbrüciae of the housing / bearing plate (2), the housing / bearing plate openings (5) after the outer edge of the housing / bearing plate (2) have a slope in the direction of the cover / pump housing (1) an enlargement of the breakthrough. cross section results, the clamping fingers (6) when placing the lid / pump housing (1) inside is pressed and when passing through the opening (5) of the bearing plate (2) snaps outwards and through on; _Clamp finger (6) "lugs attached to the outside of the cover or the" pump housing (1) with the Housing / end shield (2) is firmly connected and the hare of the clamping finger (6) is formed so that when it comes to internal pressures thereof Lös.der the solid compound is obtained. .2. Snap device according to item 1, characterized in that preferably 3 clamping fingers (6) are present and the cross section of the clamping finger (6) and the openings (5) square, rectangular 'or part of a circular ring. · Snap device according to points 1 and 2, characterized in that the clamping fingers (6) on the. Cover / pump housing (1) in one piece or detachably connected thereto "and have a constant or tapered cross-section and curves at the joints cover / pump housing (1) and clamping fingers (6) · 4 · Snap device according to item 1 to 3 », characterized in that the centering of the connecting parts takes place by the clamping fingers (6). 5. snap device according to item 1 to 4 »characterized - characterized in that a sealing of the connecting parts cover / pump housing (1) and housing / bearing-plate (2) takes place so that the connecting parts are provided with 'or without sealing groove 6 · Snap device according to items 1 to 5, by characterized in that the seal causes by their Porm a non-rigid connection of the connecting parts. 7 · Snap device to point ibis 6, by characterized in that a slope of the hare of the resilient clamping finger (6) at the junction. to the housing / end shield (2) is present. : For this 1 page drawing