CH646768A5 - Clamp. - Google Patents

Description

646 768 2

PATENT REQUIREMENTS Latching stiffening bead, designed in the way

1. Pipe clamp with a pipe to be accommodated so that the stiffening gripping ring receiving the locking lug receptacle, the bead at one point on its circumference is laterally interrupted via the stiffening lug (20) and is provided with a snap lock that extends outwards.

in one end of the clamp ring an opening and in s 10. pipe clamp according to claim 8 or 9,

the other end, which is to be received by the opening, is distinguished by the fact that the end of the surface of the clamp ring that contains the latching nose receptacle is formed radially outwardly of the clamp ring narrower than the clamp ring (11).

Has locking lug, the front edge of which is through a cut in the det and on the overlapped, which contains the locking lug

Clamp ring is pre-formed, characterized in that the end of the side receiving strip (33) for rear holding

The front edge of the locking lug (20) leaves two at an acute angle in umoo tops of a clamp insert (18).

Direction of capture of the clamp ring (11) extending side can 11. Pipe clamp according to one of claims 1 to 8,

ten areas (22) and laterally next to each of these two sides - characterized in that the latching lug (20) on one after edge areas (22) each protrudes approximately axially to the outside of the pane and extends in the circumferential direction of the clamp

Lenring extending, from the locking lug (20) directed away ring (11) extending stiffening bead is formed

Edge part (23), the side edge regions (22) and the end of the locking lug (20) containing the locking lug receptacle (26) and the locking ring (11) axially relative to the clamp ring (11) as a lug with a smaller width than that edge parts (23) merge continuously into one another. Locking nose (20) carrying stiffening bead (12) is formed.

2. Pipe clamp according to claim 1, characterized in that 12. Pipe clamp according to one of claims 1 to 8, since that the locking lug (20) is arched transversely to the clamp ring (11), characterized in that the locking lug (20) between two and the Edge parts 20 directed away from the locking lug (20) extend in the circumferential direction of the clamp ring (11) (23) each with an abutment bead (12a, 12b) designed as a transition radius and which cuts into the curvature of the locking lug ( 20) are drawn. (Fi-locking nose receiving end of the clamp ring (11) gur 4) as a tab (29a) with a smaller width than that of the two

3. Pipe clamp according to claim 1 or 2, characterized gekenn- stiffening beads (12a, 12b) and their space (12c) that the locking lug (20) is formed up to the end edge of the 25 occupied width of the clamp ring (11). Clamp ring (11) extends (Figures 1,4, 5 and 10). 13. Pipe clamp according to claim 12, characterized in

4. Pipe clamp according to one of claims 1 to 3, characterized in that the tab (29a) with one in which the latching lug (20) is characterized in that the directionally extending-receiving space (12c) between the two of the latching lug (20) Ver-th edge parts (23) with a transition radius are provided with an additional, stiffening beads (12a, 12b), inwardly directed arc-shaped cutting edge (21) in the clamp ring (11) over 30 stiffening bead (29b).

hen, which together with the end edge of the latching lug (20) (in 14th pipe clamp according to one of claims 1 to 13,

Top view) of a crescent-shaped cut-out, characterized in that the locking nose receptacle (26).

represents rounded crescent ends in the clamp ring (11) (fi-containing end section of the clamp ring (11) on its gur 5). End edge bent outwards and as a tool holder

5. Pipe clamp according to one of claims 1 to 3, thereby 35 me with for example hook-shaped cross-section ausgebil-marked that is directed away from the locking lug (20).

th edge parts (23) with transition radius in additional bo- 15. Pipe clamp according to one of claims 1 to 14, because gene-shaped cut edge parts (23a) which are characterized by a that the clamp ring (11) all around one-sided distance from the side edge areas (22) which is formed in pieces and preferably with a part of the side edge regions (22) of the locking lug (20) which extends back to the circumference of the locking lug (20) and into a predetermined bending point (14) which adjusts with the increasing tube 40 .

The falling cutting edge ends with the clamp ring (11).

(Fig. 10). •

6. Pipe clamp according to one of claims 1 to 5, characterized in that the locking lug (20) and the locking lugs 45 The invention relates to a pipe clamp with a receptacle (26) containing, overlapping and to be taken up the pipe encompassing clamp ring, which is interrupted at the closing ends of the clamp ring with the same area around its circumference and is formed with a catch curvature like the clamp ring itself, locking catch is provided, which in one end of the clamp

(Figure 8). lenringes an opening and in the other end one of the

7. Pipe clamp according to one of claims 1 to 5, characterized so opening to be recorded, characterized from the surface of the clamp ring, that the locking lug (20) and the locking lugs has radially outwardly shaped locking lug, the front receptacle (26) containing, overlapping and is formed at an angle by a cut in the clamp ring. closing ends of the clamp ring (11) in the circumferential direction. In the known pipe clamps of this type (DE-GM device of the clamp ring are flattened. 76 22 159, DE-PS'en 22 55 761 and 24 58 175, DE-OS

8. Pipe clamp according to one of claims 1 to 7, thereby ss 27 03 344), the catch base is sharp-edged, namely one-marked that that end of the clamp ring (11), fold through the ends of the catch forming the square in which the catch receptacle is formed as a flap or arcuate cut. As a result, these fen are formed and only substantially in the manner of a well-known pipe clamp on the base of the locking lug have a high notch setting of a sensitivity which is formed in the clamp ring and which is outwardly protruding. Due to this high notch-resistant, stiffening bead is formed. There are cracks in the material, i.e. tearing of the

9. Pipe clamp according to one of claims 1 to 8, characterized in cut ends, which are characterized by a large, radial tensile stress that the latching lug (20) lead to the outside to tear off the latching lugs.

The above, in the circumferential direction of the clamp ring object of the invention is therefore the elimination of the reinforcing bead extending (11) and also called notch effect and risk of tearing on the base of the locking lug, the locking lug receptacle (26) protrudes outwards and prevents the opening Pipe clamp when loading stiffening bead in the other end section of the clamp, which leads to a substantial qualitative improvement ring (11), which leads to the locking lug receptacle (26) of the pipe clamp. This object is achieved with a stiffening bead that is larger than the pipe clamp defined in the claims.

The advantage of this design is that arcuate transitions are formed on the end face of the locking lug, which prevent the side edges of the locking lug from tearing or tearing. As a result, the locking lug can absorb a much higher pulling force than before. Due to the arrangement of the transition radii in the end of the nose base, the latch is easy and therefore inexpensive to manufacture, because the nose curvature can be reliably molded out of the clamp ring.

In particularly advantageous embodiments of the pipe clamp according to the invention, one or more of the following features can be used:

a) the locking lug is arched outwards transversely to the clamp ring;

b) the cut forming the latching lug can be designed in the shape of a crescent moon with transition radii in the base area of the nose;

c) the transition radii can be drawn essentially into the locking nose curvature;

d) the locking lug can be drawn with its curvature up to the end edge of the clamp ring end, so that the entire area of the clamp end is stiffened and this end piece is not bent inwards and the locking lug is pivoted outwards, but rather a more or less long area of the clamp ring stiffened, which can be supported against the inserted pipe;

e) the ends of the pipe clamp with the locking lug and the locking lug receptacle can be continued in the form of a circular arc in the normal pipe clamp curvature, as a result of which the locking lug receptacle or the tab containing the locking lug receptacle lies smoothly and positively over the end of the clamp ring containing the locking lug.

In the context of the invention, the end of the clamp ring, in which the latching nose receptacle is located, can be designed as a tab strip and can only be formed essentially in a stiffening bead which projects outwards and is formed in the clamp ring.

Due to the outer, tab-like, stepped end in the area of the catch and the design of the fastening element on the circumference of the pipe clamp, the insertion of an elastic, vibration-damping insert tape is problem-free.

Another advantage of this embodiment is based on the fact that when the pipe clamp is open, the semicircular contour of the clamp ring is retained on the side of the latching lug, and the pipe to be installed can thereby be fixed more easily. The stiffening bead has a circumferential profile of approx. 90 ° and is somewhat wider than the opposite stiffening bead, the advantage being that when the state is maximally open, the predetermined bending area forms a straight line and tangentially overlaps the stiffening beads on both sides.

Furthermore, the end of the clamp ring containing the locking lug receptacle can be designed as a tab with a smaller width than the stiffening bead carrying the locking lug. In another advantageous embodiment, the latching lug can be formed between two stiffening beads extending in the circumferential direction of the clamp ring, the end of the clip ring containing the latching lug receptacle being designed as a lug with a smaller width than the width of the clamp ring occupied by the two stiffening beads and the space between them. the flap can be provided with an inward-facing stiffening bead which engages in the space between the two stiffening beads which receives the latching lug.

Likewise, an easy closing of the pipe clamps according to the invention can be achieved due to this design of the stiffening beads.

3,646,768

To fasten the pipe clamp by means of a fastening element, for example a hexagon nut, a base projecting outwards can be formed on the stiffening bead, which base has the same width as that of the stiffening bead. The flat surface of the base then runs tangentially to the stiffening bead or the clamp ring.

Embodiments of the invention are explained in more detail below with reference to the drawings.

io show:

Figure 1 is a perspective view of a pipe clamp according to the invention.

FIG. 2 shows a section in the axial direction through the latching cross section according to FIG. 1;

3 shows a view in the latch opening according to FIG. 1;

FIG. 4 shows a side view of the locking lug according to FIG. 1;

FIG. 5 shows a top view of the latch according to FIG. 1;

FIG. 6 shows a top view of the latching opening according to FIG. 1;

FIG. 7 shows a side view of the bent latching opening tab according to FIG. 1;

8 shows a snap lock with the clamp ring closed according to FIG. 1;

9 shows an open pipe clamp with an inserted pipe;

10 is a top view of the latch of another embodiment;

11 is a side view of a closed snap lock of another embodiment.

1 shows an embodiment of the pipe clamp 10 according to the invention with a one-piece clamp ring 11, 30 which is bent to the nominal diameter and is formed on both sides with reinforcing beads 12 and 13 from the ends of the clamp ring 11 and which have an uneven circumferential profile. The stiffening bead 12 has a circumferential profile of approximately 180 ° and then tapers off tangentially in the circumferential curvature of the clamp ring 11. The snap lock, particularly shown in FIG. 8, consists of a locking lug 20 formed on the stiffening bead 12, which is arched outwards transversely to the pipe clamp axis 10 and rises gently starting at the beginning of the 40 stiffening bead 12. The two base ends, an outer section edge 21 and an inner nose edge 22 are located at a lateral distance from one another and are connected to two transition radii 23 which are located in the base of the nose. The special embodiment of the transition radii 23 of the locking lug 20 in the example shown lies in the fact that these are essentially drawn into the locking lug curvature and thus have a significant reduction in the sensitivity to notching in the base of the nose. This particular arrangement of the transition radii 23 prevents the latch 20 from tearing off too quickly at high, tangential tensile stresses. Another embodiment is shown in FIG. 10, the transition radii 23 being formed by punched out circular openings 23a. In this example, a single cut 22, which delimits the catch, is sufficient, which in the example shown runs tangentially into the circular openings 23a on the catch side. However, the cut 22 could also be introduced tangentially into the outside of the circular openings 23a. Due to the inventive design of the locking lug 20, it is possible to use a material with a lower notched impact strength for the manufacture of the clamp ring 11, which consequently leads to cheaper material costs.

To fix the locking lug 20, a locking lug receptacle 25 with a locking lug receptacle 26 is provided. 65 As can be seen from FIGS. 6 and 7, this tab 25 is offset at the end of the clamp ring 11 on the side of the stiffening bead 13, one edge 27 running in the axial and the other edge 28 in the radial circumferential direction. The

646768

The width of this tab 25 corresponds approximately to the width of the stiffening bead 13. Since the two ends of the clamp ring 11 are to merge into one another in the closed state, circularly, tangentially with some play, see FIG. 8, the tab 25 is approximately a sheet thickness in radius the clamp ring 11 larger than this. This embodiment allows easy insertion of an elastic insert tape without providing it with a recess at the ends.

This tab shape prevents the insert tape from notching.

In order to ensure problem-free opening and closing of the pipe clamp 10 according to the invention, the end of the tab 25 is bent at its end in a semicircular shape 29 and forms a receptacle for a tool, for example a screwdriver, for opening and closing the snap lock.

In the tab 25 there is the locking lug receptacle 26, which has in its base end 30 one of the locking lugs 20 suitably adapted, in the example shown straight, axial course with respect to the clamp ring 11. This base end 30 serves as a counter-support for the locking lug 20. In order to achieve simple opening and closing of the pipe clamp 10, the edges 31 adjacent to the base end 30 are provided with a certain amount of play analogously to the locking lug 20 and run radially and parallel to one another. The edges 31 merge into a radius 32. As a result of this design of the latching nose receptacle 26, the stiffening bead 13 is formed further than the stiffening bead 12, precisely in order to compensate for this weakening of the cross section and to allow the two overlapping ends to have a positive effect on one another.

Fig. 11 shows a Sche 11enring 11, which is provided with two stiffening beads 12a and 12b running on the circumference, which are at an axial distance 12c from each other. In the other axial direction, the reinforcement seals 12a and 12b are delimited by side strips 33. In the area 12c there is the locking lug 20 which merges into the stiffening beads 12a and 12b in its side area. The tab 29a receiving the locking lug is adapted in its locking lug receiving area 29b to the stiffening beads 12a and 12b and to the area 12c. This embodiment gives the closure a special positive fit when closed.

As can be seen particularly from FIG. 6, the tab-shaped end of the clamp ring 11 containing the catch receptacle 26 is excluded on each side, so that lateral strips 33 on the overlapped end 5 of the clamp ring 11 containing the catch 20 are kept free on the rear Can hold holding lips of a clamp insert. These lateral strips 33 then extend on both sides of the clamp ring 11 around its circumference without overlapping in the area of the closure. It is also particularly advantageous in the context of the invention if the clamp ring is formed in one piece, as is particularly evident in FIG Fig. 9 is shown. So that the clamp ring in all around the pipe 19 to be accommodated or the like. If you put it on smoothly, you can use a predetermined bending area 14, which in the example shown lies between the two stiffening beads 12 and 13 and is not infiltrated, so that it is around the pipe 19 or the like. can bend, while the infiltrated parts of the clamp ring 11 maintain their shell shape when the clamp is closed. However, the predetermined bending area 14 should not be weakened as far as possible, but should have practically the same cross-sectional size as the other parts of the clamp ring 11.

The one-piece design of the clamp ring 11, 25, optionally with a predetermined bending point 14, ensures that the ends of the clamp ring equipped with the locking lug 20 or the locking lug receptacle 26 are guided in a straight line and smoothly on one another and their smooth, torsion-free even under load This ensures a safe closed position when the catch 26 engages in the catch receptacle 26. In addition, the clamp ring can be opened and closed several times, in particular by its predetermined bending point 14, without a connection reducing the closing security. The ha-35 conical configuration at the end of the tab part containing the latching nose receptacle is of particular advantage, because on the one hand transverse stiffening is achieved and on the other hand a secure engagement for a tool, in particular a screwdriver, is created Applying the force obliquely when opening and closing the pipe clamp and thus also twisting the clamp ring 11.

C.

2 sheets of drawings