Hose clamp

FIELD: machine building.

SUBSTANCE: connection of two ends of the tape is done by a guide hook located on the internal side of the tape and inserted into a socket designed for the guide hook and located on the external side of the tape and a locking hook also located on the internal side of the tape and inserted into the socket designed for the locking hook and located on the external side of the tape. The socket designed for the locking hook is a depressed pocket achieved by cold pressing of a metal strip, and forming a unified whole with it around its perimetre. The internal surface of the socket is perpendicular to the tape surface in the support area adjacent to the outer end of the tape. The locking hook has a projection directed to the side opposite to the internal end of the tape, which when the hose clamp is pulled engages its sheared edge with the support area of the socket designed for a locking hook.

EFFECT: due to the fact that its design is integral with the metal strip, the socket for the locking hook has a much greater strength.

9 cl, 3 dwg

 

From patent US 4299012 known hose clamp with signs of restrictive part of claim 1 of the claims. Due to the fact that in the tense condition of this collar on its inner surface there are no gaps and the steps and, thereby, achieve uniform compression of the hose clamp over the entire contact surface, the described clamp has established itself as suitable, including for fastening thin, rigid hoses to the pipes.

For connecting the outer end of the tape with its internal stretch hose clamp of known construction provided located on the domestic portion of the guide hook and at least one anchor or locking hook. In the closed position the guide hook and latch hook engages respectively with through holes formed on the outer area of the tape.

In the case of thinning the walls of the hoses and loss of elasticity and the resulting necessity to increase the tightening torques Kruchkova connection is a weak link. Practice has shown that a tensioning device, for example in the so-called "Oetiker ear", the holes in adjacent areas, when exposed to elevated tightening torques are stretched in length, which ultimately leads to breaks. This problem can be solved in accounts the use of high quality steel with high elasticity, that, however, in turn, leads to an increase in the cost of the clip.

The task of the invention is to create such a hose clamp, which at least partially eliminates the drawbacks in the comparable hose clamps corresponding to the prior art. More narrow objective here is to improve hook connection hose clamps, especially from the point of view of its strength.

This task is solved by the distinguishing features of claim 1 claims. According to this invention, the locking hook fixing is not included in the hole or aperture and is inserted into closed from all sides of the nest, obtained by the method of cold forming metal tape and capable due to its closed form to assume a significantly higher efforts. To ensure the fastening of the latch hook in the nest of its internal surface area of focus forms an angle to the surface of the tape with the size not less than 90. For this thrust area the latch hook engages the ledge. An additional advantage of a closed form nests under the locking hook is that the latch hook is not acting out, thus preventing the danger of injury to personnel.

In the development of the present invention according to claim 2 of the formula is subramania cold-pressed from the metal tape is pushed himself latch hook, which only the forward part of the protrusion has a hole obtained by the method of cutting. This design provides high strength and fixing the hook.

The appropriateness of the choice of the construction according to claim 3 of the formula of the invention is that when the tension hose clamps provided the contact protrusion of the locking hook in the desired position on the thrust surface of the slot for fixing the hook.

During execution of the invention according to claim 4 and 5 of the claims provided similar structure and comparable strength of coupling and against the guide hook and socket under the guide hook, and nest under the guide hook has one hole for the passage of the spout provided on the guide hook. The trunk is performed mainly by the L-shaped notch in the metal tape, provides mutual alignment of both ends of the ribbon under the seat and holds the latch hook in the hitch with the Jack under the guide hook is also when the hose clamp loose condition.

During execution of the invention according to claim 6 claims spout guide hook runs mostly parallel to the surface of the belt and seat condition overlaps the overlapping metal tape located around the opening of the nest under the guide hook When you design the closed state of the clamp can be fixed by hitting the Jack under the guide hook. This type of fixation is simpler than the corresponding prior art bend extending through the guide slot, the guide hook shaped tongue.

Below on the basis of the drawings provides a more detailed explanation of the example of execution of the invention.

While figure 1 shows a longitudinal section of a hose clamp in the expanded, not yet bent into a ring condition,

figure 2 is a top view of a hose clip, presented in figure 1, and

figure 3 is an enlarged image of a longitudinal section of the site, in which the ends of the hose clamps are adjacent to each other overlap, with the arrangement of hooks fastened in the state.

Presents hose clamp, when viewed from the right in figure 1 and 2 end 10 of the tape located when the hose clamp in a closed condition on the outside, finds the following symptoms, occurring due to the cold forming of the steel tape 11: socket 12 under the guide hook, the slot 13 for fixing the hook, the tension device 14 in the form of so-called "Oetiker ear", the guide 15 of the pull-tab guide hook 16, the locking hook 17 and at the other end 18 of the tape located at the closed position hose clamps on the inside of the tongue 19.

When the hose clamp in a closed condition is, shown in figure 3, the guide hook 16 is in the socket 12 under the guide hook, locking hook 17 in the socket 13 for fixing the hook and the latch 19 engages over the guide 15 of the tongue.

To tighten the clamp with simultaneous reduction of its diameter on both the exhaust from tape the shoulder 20 of the tension lug 14, which runs on a tape in a generally vertically, with the aim of reducing the distance between United with the tape 11 by the edges of the shoulder 20 is used air tool (not shown). Provided in the tension lug 14 of the corrugation 21 prevents bowing of the links connecting the edge of the shoulder 20 in the longitudinal direction.

The socket 13 for fixing the hook extruded from a metal tape by the method of cold forming and represents, as best seen in figure 2 and 3, closed around its perimeter recess, forming a metal tape a whole. The inner surface of the socket 13 for fixing the hook forms a persistent area 25 adjacent to the outer end 10 of the tape, the angle of 90 to the surface of the tape.

The locking hook 17 is also squeezed by the method of cold forming metal tape, making it a whole around its perimeter, except for the portion directed in the direction opposite to the inner end of the tape. At the site pikirayi the hook 17 is separated from the metal tape through the incision, carried out to stamping, resulting in a protrusion 26, who plays for the thickness of the tape 11.

The upper side 27 of the protrusion 26 and the upper inner surface 28 of the socket 13 for fixing the hook are parallel to the surface of the tape 11. This contributes to the fact that with the closure of the collar protrusion 26 passes in the direction of the thrust section 25. Occurs when the tension clamp forces acting in the longitudinal direction of the tape, cause the protrusion 26 rests with its cut edge in the axial section 25 of the socket 13 for fixing the hook.

The socket 12 under the guide hook is also manufactured by the method of cold forming metal tape, with the side facing towards the outer end 10 of the tape, he has a hole 30, obtained through a cut in the metal tape, the rest of the perimeter forming a single whole with it.

Finally, the guide hook 16 is also formed from a metal tape by cold forging, forming a single whole, with the exception of one of its sides directed in the direction opposite to the inner end 18 of the tape. On the side directed in the direction opposite to the interior 18 to the end of the tape, the guide hook 16 is separated from the metal tape by means of L-shaped notch formed by two straight lines. The edge of the L-shaped incision is directed away from vnutrennih the end 18 of the metal tape. Due to this, on vygnuto guide hook 16 is formed of a triangular spout 31 is directed in the direction opposite to the inner end of the tape.

The spout 31 of the guide hook 16 and the upper side of the socket 12 under the guide hook lie parallel to the tape surface.

When snapping hose clamps and the insertion of the guide hook 16 into the receptacle 12 of the spout 31 passes through located perpendicular to the tape surface of the hole 30 nests under the guide hook 12 and superimposed on the plot of the tape 11 adjacent to the opening 30. Thus, it is an alignment of both ends 10, 18 tape relative to each other, thus holding the guide hook 16 in the socket 13 for fixing the hook before tightening hose clamps.

After fastening the hose clamp coupling between the guide hook 16 and the socket 12 of the guide hook is fixed by hitting the guide slot of the hook 12. After that the hose clamp is tightened around an object, for example, connection hose-pipe by compression tension lug 14, and when this occurs, the displacement of the tongue 19 in the guide 15 of the tongue. In a fully active state, the gap is inevitably formed between the inner edges of the shoulder 20 of the tension lug 14 that overlaps the inner section of the tape is, adjacent to the tongue, across its width.

For a list of symbols

10 - the outer end of the tape

11 - tape

12 - the nest under the guide hook

13 - nest under the locking hook

14 - tension lug

15 - guide tongue

16 - the guide hook

17 - latch hook

18 - the inner end of the tape

19 - reed

20 - shoulder-related tension device 14

21 - bumps in the device 14

25 - resistant area related to slot 13

26 - protrusion related to the hook 17

27 top side belonging to the hook 17

28 - upper inner surface belonging to the Jack 13

30 - hole relating to the socket 12

31 - spout relating to the hook 16

1. Hose clamp from the tape (11) with an overlapping each other overlapping ends (10,18) tape with
located on the inner area of the belt guiding hook (16)designed for insertion in a completed near the outer end (10) tape nest under the guide hook (12),
the locking hook (17)located on the inner area of the tape and offset from the guide hook (16) in the direction of the inner end (18) tape, intended for insertion into the slot (13) for fixing the hook is executed on the external area of the tape, and
the tensioning device (14)designed to reduce the dia is tra hose clamps,
characterized in that
the slot (13) for fixing the hook is a closed on all sides, formed from a metal tape recess, the inner surface of which is in thrust area (25)adjacent to the outer end (10) tape, forms an angle to the surface of the tape with the size not less than 90, and
the locking hook (17) has a ledge (26)directed in the direction opposite to the inner end (18) tape and designed for coupling with thrust area (25) of the slot (13) for fixing the hook.

2. Hose clamp according to claim 1, characterized in that the locking hook (17) is a recess, formed from a metal tape, and represents a cut only in the ledge (26).

3. Hose clamp according to claim 1 or 2, characterized in that the upper side (27) of the locking hook (17) and the upper inner surface (28) of the slot (13) for fixing the hook are parallel to the top surface of the tape.

4. Hose clamp according to claim 1 or 2, characterized in that the socket (12) under the guide hook is a recess, formed from a metal tape with a hole (30)facing the outer end (10) of the tape and passing almost vertically to the surface of the tape and the guide hook (16) is formed from a material tape deepening with a nozzle (31), pointing towards the outer end (18) of the tape is intended to pass through the hole (30) of the socket (12) under the guide hook.

5. Hose clamp according to claim 4, characterized in that the nozzle (31) of the guide hook (16) runs mostly parallel to the surface of the tape and when the clamp is in the closed position covers the overlapping area of the strip (11)adjacent to the hole (30) of the socket (12) under the guide hook groove.

6. Hose clamp according to claim 5, characterized in that the nozzle (31) of the guide hook (16) is formed by L-shaped notch in the metal tape.

7. Hose clamp from one piece of tape overlapping each other overlap the ends (10, 18)
the guide hook (16)located on the inner side of the tape, intended for insertion in the socket (12) under the guide hook, made near the outer end (10) of the tape located on the inner area of the tape and offset from the guide hook (16) in the direction of the inner end (18) of the tape retaining hook (17), intended for insertion into the slot for fixing the hook (13)is performed on the external area of the tape, and the tensioning device (14), intended to reduce the diameter of the hose clip,
characterized in that
the socket (12) under the guide hook is molded from a metal strip recess with a hole (30), pointing towards the outer end (10) of the tape and passing almost vertically to the surface of the tape,br/> and the guide hook (16) is a hollow, extruded from a metal tape with a nozzle (31), pointing towards the outer end of the tape and intended for passing through the hole (30) nests under the guide hook (12).

8. Hose clamp according to claim 7, characterized in that the nozzle (31) of the guide hook (16) runs mostly parallel to the surface of the tape and when the clamp is in the closed position covers the overlapping area of the strip (11)adjacent to the hole (30) of the socket (12) under the guide hook groove.

9. Hose clamp according to claim 7 or 8, characterized in that the nozzle (31) of the guide hook (16) is formed by L-shaped notch in the metal tape.



 

Same patents:

Hose clamp // 2450201

FIELD: machine building.

SUBSTANCE: connection of two ends of the tape is done by a guide hook located on the internal side of the tape and inserted into a socket designed for the guide hook and located on the external side of the tape and a locking hook also located on the internal side of the tape and inserted into the socket designed for the locking hook and located on the external side of the tape. The socket designed for the locking hook is a depressed pocket achieved by cold pressing of a metal strip, and forming a unified whole with it around its perimetre. The internal surface of the socket is perpendicular to the tape surface in the support area adjacent to the outer end of the tape. The locking hook has a projection directed to the side opposite to the internal end of the tape, which when the hose clamp is pulled engages its sheared edge with the support area of the socket designed for a locking hook.

EFFECT: due to the fact that its design is integral with the metal strip, the socket for the locking hook has a much greater strength.

9 cl, 3 dwg

Hose clamp // 2522703

FIELD: machine building.

SUBSTANCE: hose clamp with a tightening ear 15 on the inner side of a clamping band in the zone touching the hose is provided with a drop-shaped recess 25 counteracting the release of the tightening ear 15 after the hose clamp is tightened.

EFFECT: perfected clamp design.

9 cl, 3 dwg

Hose clamp // 2599883

FIELD: manufacturing technology.

SUBSTANCE: invention relates to hose clamps. Open hose clamp has a clamping device of the so-called "Oetiker" eye shape. Closed state is locked by means of gear zones, which are engaged with each other outside the eye area on the opposite from the outer end of the clamping strip side of the eye.

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Hose clamp // 2628252

FIELD: machine engineering.

SUBSTANCE: open hose clamp is provided with an eyelet tensioner. The tightened state is fixed by the geared portions 15, 23, which are engaged with each other outside the tab area and on the side of the tab 24 facing away from the outer end of the clamping band. In the fixed state, the eye does not experience any effort. Thus, even damage to the outwardly projecting eyelet 24 does not result in the loss of the clamping function of the hose clamp.

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5 cl, 4 dwg

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