DE8807453U1 - Pipe connection - Google Patents

Description

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BOSCH-SIEMENS HOUSEHOLD '··' '..''.SOOO Munich 80, 07.06.1988

Hochstrasse 17

TZP 88/702 Re/hü

Pipe connection

The innovation relates to a pipe connection consisting of a first and a second pipe connection part, wherein the second pipe connection part is inserted into the first pipe connection part and wherein both pipe connection parts are sealed against each other at least in a part of the insertion area, wherein the second pipe connection part has a first and second circumferential groove and at least the first groove lies within the insertion area and accommodates a sealing ring.

Pipe connections consisting of two pipe connection parts are known which are, for example, soldered, welded or screwed together, depending on the requirements placed on the pipe connection in terms of strength and sealing. Although these types of connection generally meet the requirements, they cannot be used with all connection materials and always prove to be relatively complex.

The innovation is based on the task of specifying a pipe connection that meets high requirements for mechanical strength and sealing in a structurally simple manner.

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TZP88/702

According to the innovation, this task is solved by the second groove &iacgr;,

atsrJis arranged outside the insertion area and accommodates a first locking spring with a bracket that snaps into a recess in the first pipe connection part that is accessible from the outside.

The innovation can be used for practically all pipe connection materials. The pipe connection can be made by hand, without tools, in a short time and can be released in the same way, i.e. without tools and quickly.

The innovation is now described using the drawings. It shows:

Fig. 1 shows a section through a pipe connection with a first locking spring;

Fig. 2 is a plan view of the first locking spring;

Fig. 3 a pipe connection with a second locking spring;

Fig. 4 is a plan view of the second locking spring;

Fig. 5 a pipe connection with a third locking spring and

Fig. 6 is a plan view of the third locking spring.

The arrangement shown in Fig. 1 consists of two pipe connection parts 1 and 2. Both parts 1, 2 are dimensioned in such a way that the second pipe connection part 2 can be introduced into the first pipe connection part 1. With a circular cross-section of the introduction area , the inner diameter of the first pipe connection part 1 is equal to the outer diameter of the second pipe connection part 2. The outer diameter of the second pipe connection part 2 can also be insignificantly smaller than the inner diameter of the first pipe connection part 1.

TZP/702

< In the second pipe connection part 2 there is a first and second groove 21 and

22. In the arrangement shown in Fig. 1, the first groove 21 is in the insertion

■ insertion area, while the second groove 22 is outside the insertion area.

The first groove 21 accommodates a sealing ring 3 and the second groove 22 a first locking spring 4.

The safety spring 4 consists, as will be explained with reference to Fig. 2, of a base body 41 with two punched tabs 411, which allow the safety spring 4 to be slipped over the second pipe connection part 2. The tabs 411 can also be designed in such a way that the safety spring 4 can be slipped over the first pipe connection part 1.

When the locking spring 4 is slipped over the second pipe connection part 2 before it is inserted into the first pipe connection part 1 or when the locking spring 4 is slipped over the first and second pipe connection parts 1, 2 in the inserted state, the tabs 411 bend in the direction of the first pipe connection part 1, as shown in Fig. 1. The locking spring 4 is preferably slipped over the first and second pipe connection parts 1 and 2.

The spreading of the tabs 411 fixes the locking spring 4 in the second groove 22. Its base body 41 is thus perpendicular to the longitudinal axis of the arrangement formed from the two pipe connection parts 1 and 2.

The base body 41 is provided with a bracket 42. The bracket 42 snaps into a recess in the first pipe connection part 1 that is accessible from the outside. It consists of a leg 421 that is angled relative to the base body 41 of the locking spring 4 and an adjoining part 422 that, when mounted, rests against the first pipe connection part 1 in the vicinity of the recess and has a locking element 424 that protrudes into this recess. This part 422 also has a projection 423 that is angled relative to the surface of the first pipe connection part 1 at the end of the bracket 42 that is opposite the base body 41. The projection 423 makes it easier to detach the bracket 42 from the first pipe connection part 1 and thus to release the pipe connection.

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TZP88/702

Figure 2 shows ^the shape of the safety spring 4. The base body is, for example, rectangular and has two punched-out tabs 411. The punched-out area in the base body 41 shown in Figure 2 consists of a circle arranged around the center of the rectangular base body and two tangents arranged parallel to one another and to the long edges of the base body. In this embodiment, the tabs M1 are each formed by the part of the base body 41 arranged between the circle and the tangents. The diameter of the punched-out circle is smaller than the outer diameter of the wide groove 22 which accommodates the safety spring 4.

The bracket 42 is arranged on the base body 41 in the area of the lower tab 411. The base body 41 can also have two identical brackets 42, with each bracket being arranged in the area of a tab. Each bracket then snaps into a corresponding recess in the first pipe connection part 1 with a locking element 424.

Figure 3 shows a pipe connection consisting of a first and second pipe connection part 1 and 2, in which both the first and the second groove 21 and 22 of the second pipe connection part 2 are located in the insertion area. The first groove 21 accommodates a sealing ring 3 and the second groove accommodates a locking spring 5, the shape of which is shown in Figure 4. The locking spring 5 is guided through a hole in the first pipe connection part 1. The hole is located at the point in the first pipe connection part 1 at which the second groove 22 of the second pipe connection part 2 is arranged in the assembled state.

The second securing spring 5 shown in Figure 4 is essentially straight in the area of this bore and is bent around the first pipe connection part 1 in such a way that it at least partially encloses it on the outside.

The pipe connection shown in Figures 5 and 6 has a third locking spring 6. It consists of a wire which surrounds the second groove 22 of the second pipe connection part 2 and forms two crossing springs in the area of the first pipe connection part 1 which rest against the surface of the first pipe connection part 1. Both brackets are bent at their ends in the direction of the pipe connection interior, as shown in Figure 6. The brackets _each snap into a recess in the first pipe connection part 1 which is accessible from the outside.

Claims (7)

TZP 88/702 Re/hü Protection claims 1. Pipe connection, consisting of a first and a second pipe connection part (l, 2), the second pipe connection part (2) being inserted into the first pipe connection part (l), and both pipe connection parts (l, 2) being sealed against one another at least in part of the insertion area, the second pipe connection part (2) having a first and second circumferential groove (21, 22) and at least the first groove (21) lying within the insertion area and receiving a sealing ring (3), characterized in that the second groove (22) is arranged outside the insertion area and receives a first locking spring (4) with a bracket (42) which engages in an externally accessible recess in the first pipe connection part (1) . 2. Pipe connection according to claim 1, characterized in that the first securing spring (4) is designed as a leaf spring with a base body (41) which has two punched tabs (411) which can be pushed over the first pipe connection part (1), and that the tabs (411) are mounted in the second groove (22) in a spread manner relative to the base body (41). 3. Pipe connection according to claim 1 and 2, characterized in that the bracket (42) consists of a leg (421) developed relative to the first pipe connection part (1) and a part (42z) resting on the first pipe connection part (1) in the vicinity of the recess. 4. Pipe connection according to one of the preceding claims, characterized in that the bracket (42) has, on its part (422) resting on the first pipe connection part (1), a projection (423) which is angled relative to the surface of the first pipe connection part (1). I f · C · «■ · &ogr; ■ 1 TZP88/702 5. Pipe connection according to claim 1, characterized in that the second groove (22) of the first pipe connection part (1) is arranged within the introduction area and instead of the first locking spring (4) accommodates a second locking spring (5) guided through a bore in the first pipe connection part (1), which is designed to be essentially straight in the region of the bore and the second groove (22). 6. Pipe connection according to claim 5, characterized in that the second securing spring (5) at least partially encloses the first pipe connection line (1) on the outside. 7. Pipe connection according to claim 1, characterized in that the second groove (22) instead of the first locking spring (4) accommodates a third locking spring (6) which consists of a wire that surrounds the second groove (22) and in the area of the first pipe connection part (1) forms two intersecting brackets that rest on the surface of the first pipe connection part (l) and that each snap into a recess in the first pipe connection part (l) that is accessible from the outside.