DE10334367A1 - Plug to repair a puncture, in a tubeless pneumatic tire, has a body with an outer thread to screw into the puncture hole ending in a radial flange with its surfaces at structured angles to give a durable seal - Google Patents

Abstract

The plug (1) to repair a puncture in a tubeless pneumatic tire has a base body (2) with an outer thread (3). One end of the thread extends into a radial flange (4) around the plug. The under side (6) of the flange is a straight line pitched at an acute angle (alpha) to the plug body, and the upper side (5) of the flange is on a straight line at a different acute angle (beta) to the plug body. The pointed edge of the flange, at the intersection of the upper and lower sides, has an included opening angle (x) of 5-20degrees and preferably 10-15degrees.

Description

The present invention relates to a sealing screw to seal a hole in a tubeless Tires according to the generic term of claim 1, a countersinking tool for particular manufacture of plane sinks in tires according to the generic term of claim 12, a screwing tool, in particular for screwing of sealing screws, according to the generic term of claim 23, a valve adapter according to the preamble of the claim 32, a flow barrier for an elastic hose according to the preamble of claim 34, a tire repair kit and a method for sealing a hole in the tread of a tubeless tire according to the generic term of claim 36.

A large number of sealing screws for sealing a hole in a tubeless tire are known from the prior art. So describes the US 570,942 a sealing screw with a conically tapered body with an external thread. According to this document, in the region of the wider longitudinal end, a web projecting in the radial direction from the base body is provided, the underside of which faces the base body is concave.

The US 5,725,345 also proposes a sealing screw with a concavely shaped underside of a web arranged on one end, whereby, according to this publication, an annular sealing element made of rubber is used in the space formed by the concave shape.

According to the two previous publications the sealing screw is screwed into the tire from the outside, to seal the hole in the tire.

The US 4,710,249 suggests to seal a hole in a tubeless tire by screwing the sealing screw into the hole from the inside of the tire. To punch a hole in a tubeless tire according to the disclosure of the US 4,710,249 to seal, it is therefore necessary to mount the tire from the rim.

Furthermore, from the state of the Technique known, the hole in a tubeless tire seal by gluing a rubber pin into the hole of the tire becomes.

All of the above procedures for Sealing a hole in a tubeless tire, have in the Past unsatisfactory results in terms of tightness, Simplicity of the measure as well as long-term stability performed the sealing.

The present invention lies therefore based on the task of proposing a sealing screw, the better than the sealing screws known from the prior art seals off from the outside can be screwed into the hole of the tire and which is a long-term one Sealing of the hole ensured.

The object is achieved by a Sealing screw with the features of claim 1 solved.

Preferred embodiments and advantageous Further training is listed in the subclaims.

The sealing screw according to the genus knows one body with external thread on, and one at one end of the body and the body annular circumferential web, which extends radially from the base body, and the head the sealing screw forms. Here, the web has an upper and bottom on.

In the sealing screw according to the invention is about it also provided that the underside of the web in the radial direction described by a straight line extending from the base body at an acute angle α becomes.

Trials have shown that the Sealing the hole is particularly effective when the bottom of the circumferential web described in the radial direction by a straight line which is at an acute angle α from body extends. Due to the inventive design of the bottom of the Stegs, will be an obviously more favorable force effect between the web of the screwed-in sealing screw and the displaced rubber achieved so that the force that the sealing screw from to push the rubber seeks, is less than in the sealing screws known from the prior art. It has been shown that holes in then elastic materials by sealing screws especially and to be effectively sealed when in the elastic material sealing screws that have occurred if possible little force in the direction of insertion on the elastic material is practiced. This realization is made by the design of the underside of the web according to the invention advantage. Thus, the sealing screw according to the invention can be screwed in into the rubber to the point of intersection between the underside of the web and basic body incise. As a result, the rubber when screwing in From the sealing screw according to the invention not is strongly deformed in the direction of screw insertion.

In contrast, the concave Design the underside of the web only by screwing in the rubber cut the arch section of the web, which is between the web circumference and extends concave arc minimum. The rubber in the area of the rear arch, i.e. between the minimum of the concave arch and the base body against it through the back sheet deformed, causing a due to rubber re-deformation Force component against the screwing direction is exerted on the screw.

Thus, the sealing screw according to the invention a particularly effective sealing of a hole can be produced.

The sealing effect can be increased if the top of the web is essentially through in cross section a straight line is described, which includes an acute angle β with the base body, which is smaller than the angle α, which the underside encloses with the base body. According to the circumferential web thus in cross section the shape of a pointed wedge, which digs particularly well when screwing in the sealing screw can. Due to the wedge-shaped cross-section of the circumferential The webs partially grips the rubber when the sealing screw is fully screwed in Top of the circumferential web away, which is due to elastic rear deformation force of the rubber in the direction of insertion on the sealing screw exercised and increases the sealing effect becomes.

A particularly high seal is reached when the straight lines describing the top and bottom an opening angle χ of 5 ° to 20 °, especially preferably from 10 ° to Include 15 °.

Furthermore, they are particularly good Results from sealing a hole in a tubeless tire achieved when the acute angles α and β, which enclose the bottom and top of the web with the base body, between 30 ° and 70 °, preferred between 40 ° and Be 60 °.

An advantageous embodiment of the Sealing screw provides that the base body adjoins the web subsequent cylindrical section and one attached to the cylindrical section subsequent has conical section. These configurations according to the invention on the one hand, the sealing screw has manufacturing advantages and on the other hand advantages in sealing behavior.

The manufacturing advantages are justified by that the sealing screw often as a turned part by double-sided machining is produced, whereby a cylindrical portion of the base body for Clamping the sealing screw to be machined is essential.

The better sealing behavior, in Contrary to a sealing screw with only tapered Body, justified itself by the fact that by the cylindrical section more rubber is displaced perpendicular to the direction of insertion of the sealing screw, whereby the seal in the area of the base body is significantly increased. Preferably corresponds to the length of the cylindrical section essentially the thickness of the Tire carcass, i.e. 5 to 8 mm, so this on their entire Strength can be optimally sealed. To the sealing screw at the beginning of the screwing process simply and with little effort to be able is the section adjoining the cylindrical section conical shape.

To seal the hole through the basic body To further improve sees another preferred embodiment the invention that the external thread has particularly pointed thread flanks. Good results are obtained if the thread flanks prefer an angle δ of 10 ° to 30 ° from 15 ° to Include 25 °. The improved sealing due to the tapered thread flanks can be explained by that such an external thread can penetrate the rubber better and thus better gearing between body and Rubber is caused, which increases the sealing of the hole in the Area of the main body is achieved.

There are different options conceivable how a sealing screw can be screwed into a hole can. For example, it is possible the end of the sealing screw protruding from the hole with a slot or to provide a cross slot through which the sealing screw can be screwed in using a screwdriver. Often this is the case designed screws only an unsatisfactory power transmission possible from the screwing tool to the sealing screw, especially since some of it considerable forces must be spent to screw the sealing screw into the hole in the tire for sealing. A preferred embodiment the invention provides that the base body is a concentric and a blind hole with a cylindrical section open towards the web has an internal thread in sections. In such an internal thread is an external thread of a special one Screw-in tool, such as in accordance with patent claims 23 can be screwed in, which results in optimal power transmission.

After the sealing screw in one Hole has been screwed in, the screwing tool must be removed from the screw solved become. So that the sealing screw when unscrewing the insertion tool from the internal thread of the sealing screw and not from the hole is unscrewed, it is necessary that the loosening torque when unscrewing of the insertion tool from the sealing screw is less than that Holding torque of the sealing screw in the hole of the sealed tire. To the loosening moment between the sealing screw and the insertion tool a preferred embodiment the invention, the internal thread of the Sachsloch multi-thread, in particular double thread interpret.

The loosening torque between the screwing-in tool and the sealing screw can be further reduced by the conical shape of the closed end of the manhole, the screwing-in tool described in claim 23 being designed in such a way that it has a contact surface at its axial end, which at the tip of the conical closed end of the Blind holes can be brought to the plant. This creates a frictional connection between the insertion tool and the sealing screw. Due to the small contact area between Screwing tool and sealing screw during the frictional connection, the loosening torque is thus reduced.

The requirements for a sealing screw in In terms of strength are extremely high. So sealing screws have strength values between F50 and F55. Furthermore, it is advantageous if sealing screws as possible have a low dead weight to unbalance one with a sealing screw sealed tire as far as possible to reduce. To meet the above requirements, see a preferred embodiment the sealing screw from a high-strength aluminum or Titanium alloy, especially made of an AlZnMgCu 1.5 alloy is.

So that a sealing screw is optimal can seal a hole in a tubeless tire, it is necessary that the web forming the head of the sealing screw is as possible entire area with which the rubber surrounding the hole is brought into contact. This is particularly difficult if the hole is, for example in the transition area between Profile top edge and profile base is located. For full-surface contact of the web forming the head on the tire, it is therefore sensible to if there is a countersink in the area of the hole to receive the sealing screw is created in such a way that the head with the sealing screw screwed in entire area on the rubber in the area of the hole.

Sheet countersinking tools are from the prior art only known in the form of countersink drills, but not for Processing of elastic materials such as rubber are suitable, which due to their elasticity the force of a Try to avoid the machining tool.

The present invention lies hence the further task of proposing a countersinking tool, which is used to manufacture plane sinks on workpieces made of elastic material, such as tires.

The object is achieved by a Sheet countersinking tool with the features of claim 12 solved.

Preferred embodiments and advantageous Further training is referenced in the listed.

The countersinking tool for special manufacture According to the genus, a plane cutting knife has plan sinks in tires as well as a longitudinal axis on. Furthermore, the face sinking tool is for cutting a face sink around its longitudinal axis rotatable and along a cutting direction formed by the longitudinal axis movable.

In the countersinking tool according to the invention is about it also a cylindrical one concentric to the longitudinal axis arranged outer cutting knife provided, the end facing in the cutting direction an intersection forms. About that the cutting surface of the face cutting knife also extends between longitudinal axis and lateral surface of the outer cutting knife. Furthermore is according to the invention provided that the cut surface of the cutting knife in the cutting direction behind the cutting surface of the Outer cutting blade is arranged.

The invention thus achieves that when cutting a plane sink through the outer cutting knife in the cutting direction first a circular one The circumference of the face sink and then the face knife cut out the area within the precut circumference becomes. Thus, before the effect of the face knife, the circumference through the outer cutting knife incised to a depth that corresponds to the distance between the cut surfaces of the Outer cutting blade and the face knife. The area of elastic Material within the cut by the outer cutting knife Scope is for the subsequent wedge cutting process wedge cutting knife, due to the Training according to the invention after which the cut surface of the cutting knife between the longitudinal axis and the lateral surface of the Outer cutting blade extends, caught within the outer surface of the outer cutting knife and therefore cannot avoid the force exerted by the cutting knife.

By designing the countersinking tool according to the invention it is therefore possible in particular workpieces made of elastic materials such as rubber, elastomeric Edit plastic and so on.

To edit elastic To facilitate material with the countersink tool in such a way that the free cut material from the area of the cutting knife carried away it makes sense if there is an opening in the plane of the cutting knife a cavity lying behind the chopping knife in the cutting direction is provided. The configuration according to the invention can thus the material cut free by the face knife through the opening in reach the cavity behind the cutting knife in the cutting direction. Thus, impairments prevented due to interaction of the face cutting knife with cut material that cannot be removed can, can arise.

One way to open the opening described above create, is the cutting knife as a circular section train, creating the opening corresponds to the section of the circle left open by the cutting knife.

If the cavity is replaced by a Cutting direction behind the section of the cutting knife of the outer cutting knife limited, it is also for the removal of the cut material useful if the outer surface of the outer cutting knife an opening having.

To create a plane sink centered around a hole to be able it is particularly useful to provide a centering pin running along the longitudinal axis, which is in the cutting direction by the amount Δ1 over the cutting surface of the Outer cutting blade extends.

Another embodiment of the invention provides before that the centering pin with the outer cutting knife and the face cutting knife is firmly connected and forms a cutting unit.

Furthermore, one sees preferred embodiment the invention a basic body who defines a first stop surface pointing in the cutting direction, and that along the longitudinal axis is displaceable relative to the cutting unit.

An embodiment based on the above constructive embodiment, sees you with the body solvable connected spacer ring, the second in the cutting direction pointing stop surface specifies, the spacer ring can be brought into contact with the base body in this way is that the distance between the two stop surfaces is essentially the distance Δ1 between Corresponds to the tip of the centering pin and the cutting surface of the outer cutting knife.

Through the training according to the invention created a countersinking tool with which, regardless of the respective profile depth of the tire, plane sinks can be cut, each up extend to the tread base of the tire. With the countersinking tool according to the invention in a first step, using the spacer ring, the depth T of the profile from the top edge of the profile to the base of the profile measured in which the tip of the centering pin on the profile base and the second stop surface formed by the spacer ring on the The upper edge of the profile must be brought into contact. So the protrudes Centering pin with the amount T above the second stop surface. It is assumed as an example that the distance between the first stop surface and second stop surface through the height of the spacer ring is set, one longitudinal end of the second stop surface forms and its other longitudinal End at the first stop surface the cutting surface of the face cutting knife protrudes with the amount T over the first stop surface into the spacer ring, as the distance Δ1 between the tip of the centering pin and cut surface of the cutting knife is essentially equal to the height of the spacer ring is.

It also sees another preferred embodiment before that the axial end of the pin forms the contact surface.

After the spacer ring is removed the planar sink can be cut by using the the basic body formed first stop surface is brought into contact with the upper edge of the profile. As described above, the cut surface of the cutting knife, the distance T, which corresponds to the profile depth, over the first stop surface from the main body protrudes, the cut surface penetrates of the face cutting knife down to depth T when the first stop surface is in contact with the Top edge of the profile into the profile and thus cuts itself plan sink essentially extending to the base of the profile.

To the countersinking tool according to the invention preferably economical to be able to manufacture it makes sense if possible many components of the countersinking tool as rotationally symmetrical components accomplished are. A preferred embodiment of the invention therefore provides that the basic body and the spacer ring is designed as a cylinder, in particular a circular cylinder are, the cutting unit on the inner lateral surfaces of the base body and the spacer ring is slidably mounted.

When screwing in sealing screws Often the problem occurs that a very high torque from the operator a screwing tool is to be transferred to a sealing screw. Furthermore it is necessary that after sealing a hole with a sealing screw, the screwing tool used by the sealing screw solved again without loosening the sealing screw itself from the hole.

Another task of the present The invention therefore consists in proposing a screwing tool, in which the disadvantages mentioned above are eliminated.

The object is achieved by a Screwing tool with the features of claim 23 solved.

Preferred embodiments and advantageous Further training is listed in the following subclaims.

The screwing tool for screwing in in particular of sealing screws points according to the genus one a longitudinal axis forming pen.

The insertion tool according to the invention also has a thread arranged on the pin, which in a thread of a Screw by turning around the longitudinal axis can be screwed in the direction of rotation. In addition, the screw-in element according to the invention contact surface on that with an investment surface a screw can be brought to the system, whereby the insertion depth of the pin in the screw.

Due to the fact that the screwing tool has a thread that can be screwed into a thread and the fact that the pin has a contact surface that can be brought into contact with a contact surface of a screw, a particularly high power transmission through the screwing tool can Screw are exercised. The frictional connection is established at the point in time at which the two contact surfaces are brought into contact with one another. Due to the fact that the frictional connection is created by contacting the two contact surfaces, the Lö is also torque for loosening the insertion tool and screw is particularly low.

For the principle of the invention is both conceivable that the pin external thread or has an internal thread. For the case that the pin has an external thread has, this can be screwed into an internal thread of a screw. The screw is preferably a screw with Blind hole in which the internal thread is arranged, and in which the contact surface the screw is formed through the bottom of the blind hole.

Another preferred embodiment provides before that the axial end of the pin forms the contact surface.

To solve the moment Screw-in tool and screw, especially sealing screw, further to reduce, it is particularly useful if the common contact surface of the insertion tool and screw if possible is small. A possible Design of the investment area of the insertion tool consists in, the axial end of the pin as Tip, especially as a conical tip provided.

Another preferred embodiment of the The invention provides a base body which can be displaced relative to the pin, which defines a first stop surface pointing in the direction of rotation.

An embodiment based on the above constructive embodiment sees you with the body solvable connectable spacer ring, the second in the direction of rotation pointing stop surface specifies, the spacing on the base body in such a way to the system is feasible that the distance between the two stop surfaces in Essentially the insertion depth Δ2 corresponds to that the pin can be screwed into the screw.

With the insertion tool according to the invention it is therefore possible a sealing screw according to the invention independently of the depth of the profile of the tire each defined in the area of Drill a hole in a tire up to the tread base.

The principle essentially corresponds the principle previously written for the countersinking tool. This means, it is used in a first step using the spacer ring the profile depth measured in which the second stop surface of the Spacer ring on the top edge of the profile and the axial end of the pin brought to the plant at the bottom of the profile. According to the Spacer ring in this way on the base body brought to the system that the first stop surface of the base body of the second stop surface the spacer ring has a distance which essentially corresponds to the screwing depth Δ2, which the axial end of the pin can be screwed into the screw. In the Determination of the profile depth T thus protrudes the one determining the screwing depth Section of the pin a distance over the first stop surface of the Body, which essentially corresponds to the profile depth T. In the following The spacer ring is loosened from the body and a sealing screw turned into the insertion tool up to the insertion depth. following the screw is screwed in until the system first stop surface screwed in at the profile edge. In this way, the Sealing screw essentially screwed in completely to the base of the profile.

To the insertion tool in particular economical to be able to manufacture it makes sense if the screwing tool is essentially rotationally symmetrical is trained. A preferred embodiment of the invention provides hence before that the main body and the spacer ring as a cylinder and that the pin is designed as a piston is, the pin on the inner lateral surfaces of the base body and the spacer ring is slidably mounted.

In the event of a flat tire, there is also the problem that tires with a hole not only sealed, but must be filled again with gas or air after sealing. For this is usually a hose to a wheel valve using a valve adapter coupled. Because the hose that is used to fill a sealed wheel should be fed to the valve from many different sides must be made to such valve adapters that the hose regarding the valve adapter can be rotated almost arbitrarily about its longitudinal axis. Furthermore there is a requirement that the valve adapter if possible for cost reasons is simply constructed. Since punctures are often bad Weather conditions and must be corrected in the dark furthermore the requirement that the connection between the valve adapter and hose can be produced in a particularly simple manner.

The valve adapters known from the prior art can often solve the above requirements only very unsatisfactorily.

The object of the present invention there is therefore furthermore to propose a valve adapter which meets the above requirements.

Preferred embodiments and advantageous Developments are listed in the following subclaim.

A valve adapter according to the genus has a valve receiving opening and a hose intake opening on.

In the valve adapter according to the invention is about it also provided that the hose receiving opening a circumferential in it Has web, which tapers radially inwards, and the the hose intake opening reduced to a diameter that is slightly smaller than the diameter in the hose intake opening receivable hose.

The invention provides a valve adapter in which the hose end is connected only to above the for connecting with a hose circumferential web must be inserted into the hose opening.

Thus, a connection is simple Way of producing, since no further step, such as tighten, clamp or the like. To be done Establish a secure connection between the valve adapter and hose.

Furthermore, due to the the circumferential bridge created radial symmetrical connection between hose and valve adapter and due to the clamping effect, which is created by the bridge between the hose and the valve adapter the hose around its longitudinal axis across from the valve adapter can be freely rotated.

In addition, the valve adapter according to the invention of a particularly simple construction, since the hose opening, for example made in one piece can be.

The valve adapter is particularly advantageously designed if the valve intake opening has a stamp through which the valve needle when received in the valve receiving opening Valve can be operated and in which a gas passage opening is adjacent to the stamp communicating connection of the valve receiving opening and the hose receiving opening arranged is. Such a valve adapter is particularly simple and therefore inexpensive manufacture.

To regulate the gas filling after sealing the hole of a damaged tire is also beyond a flow restriction is necessary.

The requirement here is that the flow barrier is particularly simple, d. H. inexpensive to manufacture as well as easy to use.

The flow barriers known from the prior art are usually used as check valves or constructed as check valves, and are therefore often in production expensive.

The object of the present invention there is therefore also a particularly simple flow barrier for one propose elastic hose.

The flow barrier according to the invention has one Slit with varying width in which a hose can be inserted. According to the invention, that the slot is relative to the hose from a first position, in which gas flow through the hose is possible, in a second position can be brought in that the slot width compared to the first position is reduced that the gas flow, by clamping action of the slot on the elastic hose.

The flow barrier according to the invention is thus particularly simple, and therefore easy to use and inexpensive to manufacture.

Another object of the invention consists in proposing a tire repair kit, which one previously described sealing screw and / or a previously described Insertion tool and / or a previously described valve adapter and / or a previously described flow barrier and / or an elastic one Hose includes.

Furthermore, a method for Sealing a hole in the tread of a tubeless tire to be protected.

In the state of the art known method for sealing a hole in the tread of a tubeless tire is only provided a sealing element insert in the area of the hole. This can be a sealing screw or a rubber stamp glued into the hole. Another method known from the prior art consists in the damaged one Mature over fill the valve with a solidifying foam, which is pressed into the inside of the tire by a print cartridge. The problem here is often that only small holes are sealed can be. at huge holes however flows the foam introduced from the inside of the tire through the hole, before the foam hardens is. The method of sealing a hole according to the genus from which the The present invention proceeds, provides that in the area of the tread Sealing element is inserted into the hole.

In the method according to the invention is about it also provided in a first step in the tread around the Hole essentially extending to the base of the profile To create a plane sink whose diameter is at least equal to that from the hole towards the tread corresponding section of the sealing element. Furthermore sees the method according to the invention in a further step in front of the sealing element in the hole insert that the one pointing out of the hole towards the tread Section completely is taken up in the plane sink. By the method according to the invention can have a hole in the tread of a tubeless tire should be sealed particularly well if it is a sealing element with a circumferential web forming a head acts because the head is created on the basis of the first step Even with treaded tires, the countersink covers the entire surface of the carcass top is placed in the area of the profile base, and thus the head's sealing effect comes into play.

Furthermore, a particularly durable and long-lasting seal of a hole in the tread of a tubeless tire is created by the method according to the invention, since the sealing element is completely absorbed by the plane depression and thus does not protrude above the upper edge of the tire profile, and therefore not when driving with the road comes into contact. So it is possible after sealing a hole with the method according to the invention almost to the full drive against wear of the profile.

There are different possibilities the sealing element in the tread use. A preferred variant consists of the sealing element of the tread here in the hole.

Furthermore, are different Types of the shape of the plane sink possible. A preferred embodiment provides that the plane sink is circular.

There are also several Possibilities, to manufacture the plane sink. A preferred embodiment provides that the plane sink in the tread cut and / or punched and / or milled and / or "burned in" by exposure to temperature becomes.

Depends on the type of sealing element it is also possible the sealing element by screwing it in or plugging it into the Insert hole.

A preferred embodiment provides for the use of the sealing screw according to the invention.

To damage the carcass by the Avoid sealing element and a good hold of the sealing element it also makes sense to ensure the sealing element to be inserted into the hole to a defined, predetermined depth.

It is conceivable that the defined depth by contacting a section of the sealing element, such as the web forming the head, fixed to the base of the profile becomes.

Furthermore, one looks special preferred embodiment before that the defined depth with the insertion tool according to the invention is determined using the spacer ring. Building on that Another preferred embodiment provides that the sealing element is screwed in without a spacer using the insertion tool.

Another preferred embodiment of the inventive method stipulates that in a step preceding the first step an existing foreign body is removed from the hole. It is both conceivable to look for the foreign body Outside pull off the tire, or inside, i.e. in the by the Tire and the rims to press cavity formed.

Another particularly preferred embodiment of the method according to the invention stipulates that in a step preceding the first step the tread depth nearby of the hole is determined.

It also looks a preferred one embodiment of the method according to the invention before that the plane sink by means of a plane sink tool according to the invention is cut. This is according to a preferred embodiment provided that the profile depth using the sheet countersink Use of the spacer ring is determined and that the plane sink is cut without the spacer ring using the face sinking tool.

After sealing the hole of a tire, in order to be able to continue the journey, it must again run on gas or filled with air become. There is often the problem here that no corresponding Gas filling means, such as gas compressor, pressure cartridge or the like are available. Through an advantageous embodiment of the method according to the invention is supposed to solve this problem in which the procedure provides that the sealed tire is filled with a gas by the following steps. First the valve of the sealed tire with the valve of a gas-filled tire over one Hose connected. Then a gas flow from the gas filled tire to the sealed tire until a desired one Has set pressure.

To regulate the gas flow, see a preferred embodiment of the method according to the invention before, a flow barrier according to the invention and a valve adapter according to the invention to use.

The invention is explained below of schematic drawings based on exemplary preferred embodiments further illustrated. Show it:

1 a sealing screw according to the invention in cross section,

2 an inventive countersink tool in perspective, the cutting unit in cross section, and the countersink tool in operation.

3 an insertion tool according to the invention in a perspective view,

4 a valve adapter according to the invention in cross section,

5 a flow barrier in top view,

6 an inventive method for sealing a hole in the tread of a tubeless tire.

7 an embodiment of the method according to the invention.

The invention shows a sealing screw according to the invention 1 for sealing a hole in a tubeless tire. The sealing screw 1 has a basic body 2 with an external thread 3 on.

On the one in the 1 upper end of the body 2 is a radially extending and around the body 2 all-round bridge 4 arranged. The jetty 4 is through a top 5 and a bottom 6 described. Both the bottom 6 as well as the top 5 describe a straight line in the radial direction. The underside extends here 6 descriptive straight line at an acute angle α to the base body. The the top 5 descriptive straight line also closes with the base body 2 an acute angle β, which is smaller than the angle α. As a result, the top side intersect 5 and the bottom 6 in a the um catch the jetty 4 descriptive perimeter 7 , In the present embodiment, the angle α is approximately 60 ° and the angle β is approximately 50 °, so that the two, the top 5 and the bottom 6 include an opening angle χ of approx. 10 °.

The basic body 2 has a cylindrical portion 8th to whom in the 1 above the jetty 4 as well as in the 1 below a conical section 9 followed.

In the basic body 2 is also a blind hole 10 provided which is concentric in the base body 2 is arranged, and its open end in the direction of the web 4 has.

The blind hole 10 has a cylindrical portion 11 with internal thread 12 and a conical section 13 on whose top 14 forms a contact surface for a screwing tool, such as the screwing tool according to the invention. In the present exemplary embodiment, the thread flanks of the external thread close 3 an angle δ of approximately 20 °.

The internal thread 12 is designed in the present embodiment as a two-start internal thread.

In the present exemplary embodiment, the internal thread is an M5 thread. Furthermore, the outside diameter of the outside thread is in the area of the cylindrical section 8th 7.5 mm. The thread base has in the area of the cylindrical section 8th a diameter of 6 mm. The circumferential web that defines the head 4 has a circumference diameter of 9 mm. Furthermore, the sealing screw according to the invention 1 a total length of 11 mm.

The dimensions given are only listed as an example. Other relationships of the individual dimensions to one another are also conceivable. The sealing screw according to the invention is also in different proportions with the same proportions Absolute sizes possible.

The 2a shows an inventive countersink tool 20 in perspective. The countersink tool 20 has a cutting unit 21 with a centering pin 22 , a cutting knife 23 and an outer cutting knife 24 on. The centering pin 22 extends along the longitudinal axis of the countersinking tool 20 , The outer cutting knife 24 is concentric to the centering pin 22 arranged and has a circular cylindrical shape. In the 2a face of the outer cutting knife pointing upwards 24 forms an intersection 25 , The cut surface 25 thus points in the cutting direction of the countersinking tool 20 ,

Between outer cutting knife 24 and centering pin 22 extends essentially perpendicular to the centering pin 22 the cutting knife 23 , The cutting knife 23 has the shape of a circular section. The cutting knife 23 has an intersection 26 on. In the present embodiment, the face cutting knife 23 by approx. 10 ° compared to that through the cut surface 25 of the outer cutting knife 24 formed plane inclined in the cutting direction. The outer cutting knife 24 furthermore has two opposite openings in its lateral surface.

Within the outer surface of the outer cutting knife 24 is in the cutting direction behind the cutting knife 23 lying, a cavity 28 formed for receiving cut material, which over the openings 27 can be removed.

The cutting unit 21 is on a circular cylindrical body 29 as well as on a circular cylindrical spacer ring 30 slidably mounted. The basic body 29 and the spacer ring 30 are made of POM. The position of the cutting unit 21 relative to the body 29 is via a fixing screw 31 ascertainable. The basic body 29 creates a first stop surface pointing in the cutting direction 33 firmly. The in the 2a face of the spacer ring pointing upwards 30 places a second stop surface pointing in the cutting direction 32 firmly. The spacer ring 30 is with the main body 29 releasably connected. The height of the spacer ring 30 corresponds essentially to the distance between the axial end of the centering pin 22 and the cut surface 26 of the cutting knife 23 , Furthermore, the 2a a contact surface towards the facing end face 34 firmly. Will the spacer 30 with its contact area 34 on the first stop surface 33 of the basic body 29 brought into contact, the distance between the first stop surface corresponds 33 and second stop surface 32 the distance Δ1 between the axial end of the centering pin 22 and cut surface 26 of the cutting knife 23 ,

The 2 B shows a section of the cutting unit 21 in cross section. You can see the centering pin 22 , the outer cutting knife 24 with cut surface 25 as well as the face knife 23 with cut surface 26 , According to the invention, the centering pin extends 22 a distance Δ1 over the cutting surface 26 of the cutting knife 23 ,

The 2c shows the function of the countersinking tool according to the invention 20 in a schematic representation when measuring the profile depth T. The axial end of the centering pin 22 is on the profile ground 35 brought to the plant. Furthermore, the second stop surface 32 the spacer ring 30 at the top edge of the profile 36 brought to the plant. The centering pin projects in this state 22 by the profile height T over the second stop surface 32 from the spacer ring 30 out. The cut surface protrudes accordingly 26 of the cutting knife 23 the same amount over the first stop surface 33 of the basic body 29 in the spacer ring 30 into it.

The 2d shows the cutting process with the countersinking tool according to the invention 20 with the spacer removed 30 , Due to the fact, that through the in 2c made setting, the cutting knife 26 of the cutting knife 23 by the profile depth T over the first stop surface 33 of the basic body 29 protrudes, cuts the face knife in the subsequent cutting process 26 when creating the first stop surface 33 of the basic body 29 at the top edge of the profile 36 down to the bottom of the profile 35 , In this way, a plane sink is created that extends from the top edge of the profile 36 to the bottom of the profile 35 extends.

The 3 shows an insertion tool according to the invention 40 in perspective. The insertion tool 40 assigns a pen 41 on that along the longitudinal axis of the insertion tool 40 is arranged. In the area of the axial end of the pin 41 is an external thread 42 intended. The axial end of the pin 41 is a conical tip in the present embodiment 43 , The end of the top 43 is flattened and forms a stop surface 44 , The thread 42 , the cone-shaped tip 43 and the stop surface 44 are matched to a corresponding screw, such as the sealing screw according to the invention, in such a way that it fits the external thread 42 can be screwed in until a contact surface (in Fig. contact surface 14 ) the screw on the stop surface 44 is brought into contact and thus a frictional connection between the insertion tool 40 and screw is made.

Furthermore, the insertion tool 40 a circular cylindrical body 45 and a circular cylindrical spacer 46 on. The basic body 45 and the spacer ring 46 are made of POM and the pin is made of a high-strength AlZnMgCn 1.5 alloy. The basic body 45 puts a first stop face 47 firmly. Furthermore, the spacer ring 46 a second stop surface 48 firmly. The height Δ2 of the spacer ring 46 corresponds essentially to the insertion depth, which is the axial end of the pin 41 forming stop surface 44 in a specially for the insertion tool according to the invention 40 matched screw is screwed.

The pencil 41 is in the circular cylindrical body 45 and in the circular cylindrical spacer ring 46 slidably mounted. The relative position between the body 45 and pen 41 is by a locking screw 49 fixable.

The 4 shows a valve adapter according to the invention 50 in cross section. The valve adapter 50 has a valve receiving opening 51 and a hose intake opening 52 on. The valve intake opening 51 defines an opening diameter to accommodate a corresponding valve. The hose intake opening 52 defines an opening diameter, which essentially corresponds to the outside diameter of the hose to be accommodated. According to the invention is in the area of the hose receiving opening 52 a web that runs around it and tapers radially inwards 53 provided which the hose receiving opening 52 reduced to a diameter which is slightly smaller than the diameter in the hose receiving opening 52 hose to be picked up.

Furthermore, the valve adapter 50 in the area of the valve intake opening 51 a stamp 54 through which a valve needle in the event that a valve in the valve receiving opening 51 is recorded, is operated. Furthermore, a gas passage opening is adjacent to the stamp 55 provided which the valve receiving opening 51 and the hose intake opening 52 connects with each other.

All valve adapter components described above 50 are within a body 56 arranged.

The 5 shows a flow barrier according to the invention 60 in top view. The flow barrier 60 has a circular disk-shaped body 61 , In the basic body 61 is a slot that penetrates the basic body 62 intended. The slot 62 varies in width. In the 5 the width on the left is such that an elastic hose can be passed through the slot 63 experiences essentially no force effect due to the slot, and thus its diameter is not reduced. Therefore, in this position the hose 63 in the slot 62 , a gas through the hose 63 be performed. This area of the slot 62 represents the passband 64 of the slot. The hose 63 in the in the 5 area of the slot shown on the right, the so-called restricted area 65 , so is the hose 63 , as far as its diameter, due to the force of the restricted area 65 on the elastic slit 63 reduces that in this position there is no gas flow through the hose 63 is possible.

In the present exemplary embodiment, the flow barrier 60 made of plastic, such as POM, as a pressed part. But it is also quite possible to block the flow 60 to manufacture as a turned part or the like.

The 6a to 6d show the essential steps of the inventive method for sealing a hole 70 in the tread 71 a tubeless tire 72 ,

In the in the 6a The step shown is the profile depth T, which is the height between the top edge of the profile 36 and profile reason 35 , with the countersinking tool according to the invention 20 with spacer ring 30 determined. Here, the axial end of the centering pin 22 on the profile ground 35 as well as the second stop surface 32 the spacer ring 30 at the top edge of the profile 36 brought to the plant. Furthermore, the first stop surface 33 of the basic body 29 at the contact surface 34 brought the spacer ring to the system. When the profile depth T is determined, the relative position of the centering pin 22 in relation to the basic body 29 using the fixing screw 31 fixed. As already explained above, the cut surface protrudes 26 of the cutting knife 23 in the We sentlichen the measured profile depth T over the first stop surface 33 of the basic body 29 ,

In the next step, the centering pin is first 22 in the hole 70 plugged in.

Now, as in 6b represented by the circular arrow and the longitudinal arrow, the countersinking tool 20 by rotating movement about its longitudinal axis and by cutting movement along its longitudinal axis so far that the first stop surface 33 of the basic body 29 on the top edge of the profile 36 comes into contact, so becomes a plan sink 73 cut which is essentially from the top edge of the profile 36 to the bottom of the profile 35 protrudes.

After the plane sink 73 in the area of the hole 70 is produced with the insertion tool according to the invention 40 using the spacer ring 46 in the manner described above determines the profile depth, which is the optimal insertion depth for the sealing screw 1 set so the head 4 the sealing screw 1 completely retracted from the plane sink 73 is recorded and on the profile base in the area of the hole 70 comes to the plant. This is in the 6c and 6d shown.

The 7 shows different variants for the transmission of air from a car tire filled with air to a tire filled with air 81 , The 7a shows the variant in which both tires 80 and 81 are connected to each other by a hose. The hose 82 is at the end via a valve adapter 83 with a wheel valve 84 and 85 connected. To control the gas flow between the air-filled tires 80 and the tire to be filled with air 81 is in the area of the hose 82 a flow barrier 86 used.

The 7a shows a way of air transfer between an air-filled tire 80 and a tire to be filled with air 81 , with the difference to the procedure according to 7a that the hose 82 on both sides via a valve adapter with shut-off valve to the wheel valves 84 and 85 the mature 80 and 81 is coupled. In this embodiment, the flow barrier is omitted 86 the 7a , because the flow is now via the valve adapter with shut-off valve 87 is regulated.

This in 7c shown method for air transmission from a tire filled with air 80 on a tire to be filled with air 81 differs from that in 7b shown method in that instead of the valve adapter with shut-off valve 87 on the tire to be filled with air 81 a valve adapter with check valve 88 is used.

1

Abdichtschraube

2

body

3

external thread

4

web

5

top

6

bottom

7

peripheral line (Web)

8th

cylindrical section

9

conical section

10

blind

11

cylindrical Section (blind hole)

12

inner thread (Blind hole)

13

conical section (Blind hole)

14

Contact surface (blind hole)

20

Plansenkwerkzeug

21

cutting unit

22

Centering

23

A guillotine knife

24

Outer cutting blade

25

Cutting surface (external cutting knife)

26

Cutting surface (face cutting knife)

27

Opening (outer cutting knife)

28

cavity

29

body

30

spacer

31

fixing screw

32

second stop surface (Spacer ring)

33

first stop surface (Base)

34

Contact surface (spacer ring)

35

profile base

36

profile top

37

opening

40

Insertion tool

41

pen

42

external thread

43

conical tip

44

Abutment surface (conical tip)

45

body

46

spacer

47

first stop surface (Base)

48

second stop surface (Spacer ring)

49

locking screw

50

valve adapter

51

Valve installation hole

52

Tube receiving opening

53

web

54

stamp

55

Gas port

56

body

60

Flow lock

61

body

62

slot

63

tube

64

Passband

65

stopband

70

hole

71

tread

72

tires

73

spot facing

80

air-filled tire

81

With Air to be filled tires

82

tube

83

valve adapter

84

wheel valve

85

wheel valve

86

Flow lock

87

valve adapter with shut-off valve

88

valve adapter with check valve

Claims (54)

Sealing screw ( 1 ) to seal a hole ( 7 ) in a tubeless tire ( 72 ), with a basic body ( 2 ) with external thread ( 3 ) of which there is a circumferential web at one end ( 4 ) extends radially through an upper (5) and a lower side ( 6 ), characterized in that the underside ( 6 ) of the web in the radial direction by a at an acute angle α from the base body ( 2 ) extending straight line is described. Sealing screw according to claim 1, characterized in that the top ( 5 ) of the footbridge ( 4 ) is essentially described in the radial direction by a straight line which is aligned with the base body ( 2 ) includes an acute angle β that is smaller than the angle α that the underside ( 6 ) with the base body ( 2 ) includes. Sealing screw according to one of claims 1 and 2, characterized in that the top (5) and bottom ( 6 ) descriptive straight lines include an opening angle χ of 5 ° to 20 °, preferably 10 ° to 15 °. Sealing screw according to one of claims 2 to 3, characterized in that that the acute angles α and β between 30 ° and 70 °, preferred between 40 ° and Be 60 °. Sealing screw according to one of claims 1 to 4, characterized in that the helical base body ( 2 ) get to the jetty ( 4 ) subsequent cylindrical section ( 8th ) and one on the cylindrical section ( 8th ) subsequent conical section ( 9 ) having. Sealing screw according to one of claims 1 to 5, characterized in that the external thread ( 3 ) has thread flanks running at an angle δ of 10 ° to 30 °, preferably of 15 ° to 25 °. Sealing screw according to one of claims 1 to 6, characterized in that the base body ( 2 ) a concentric and in the direction of the web ( 4 ) open blind hole ( 10 ) with a cylindrical section ( 11 ) with an internal thread in sections ( 12 ) runs. Sealing screw according to claim 7, characterized in that the internal thread ( 12 ) is multi-course, especially two-course. Sealing screw according to one of claims 7 or 8, characterized in that the closed end ( 13 . 14 ) of the blind hole tapers conically. Sealing screw according to one of claims 1 to 9, characterized in that the sealing screw ( 1 ) is made from a high-strength and light aluminum or titanium alloy, in particular from an Al Zn Mg Cu1.5 alloy. Sealing screw according to one of claims 1 to 11, characterized in that the sealing screw ( 1 ) is manufactured as a turned part. Sheet sinking tool ( 20 ), especially for the production of plane sinks ( 73 ) in tires ( 72 ), with a face knife ( 23 ), with a longitudinal axis, the countersinking tool ( 20 ) for cutting a plane sink ( 73 ) can be rotated about its longitudinal axis and can be moved along a cutting direction formed by the longitudinal axis, characterized by a cylindrical outer cutting knife arranged concentrically to the longitudinal axis ( 24 ), whose end facing in the cutting direction has a cut surface ( 25 ) forms, with the cut surface ( 26 ) of the cutting knife ( 23 ), between the longitudinal axis and the outer surface of the outer cutting knife ( 24 ) extends and in the cutting direction ( 25 ) is arranged behind the cutting surface of the outer cutting knife. A countersinking tool according to claim 12, characterized in that the outer cutting knife ( 24 ) is cylindrical. Face countersinking tool according to one of claims 12 to 13, characterized in that in the plane of the face cutting knife ( 23 ) an opening ( 37 ) to a cut behind the cutting knife ( 23 ) lying cavity ( 28 ) is provided. Facing tool according to one of claims 12 to 14, characterized in that the outer surface of the outer cutting knife ( 24 ) an opening ( 27 ) having. Facing tool according to one of claims 12 to 15, characterized in that the face cutting knife ( 23 ) is designed as a circular section. Facing tool according to one of Claims 12 to 16, characterized by a centering pin (longitudinal axis) 22 ), which is a distance Δ1 across the cutting surface in the cutting direction ( 25 ) of the outer cutting knife ( 24 ) extends. Facing tool according to claim 17, characterized in that the centering pin with the outer cutting knife ( 24 ) and the cutting knife ( 23 ) is firmly connected and a cutting unit ( 21 ) forms. A countersinking tool according to claim 18, characterized by a base body ( 29 ), which has a first stop surface pointing in the cutting direction ( 33 ) and which is relative to the cutting unit ( 21 ) is displaceable along the longitudinal axis. A countersinking tool according to claim 19, characterized in that the position of the stop surface ( 33 ) relative to the cutting unit ( 21 ) can be fixed. Flat countersinking tool according to claims 19 and 20, characterized by one with the base body ( 29 ) detachably connectable spacer ring ( 30 ), which defines a second stop surface pointing in the cutting direction, the spacer ring ( 30 ) on the base body ( 29 ) can be brought into contact in such a way that the distance between the two stop surfaces ( 33 . 32 ) corresponds essentially to the distance Δ1. A countersinking tool according to claim 21, characterized in that the base body ( 29 ) and the spacer ring ( 30 ) are designed as cylinders, the cutting unit ( 21 ) on the inner surface of the base body ( 29 ) and the spacer ring ( 30 ) is slidably mounted. Insertion tool ( 40 ), in particular for screwing in (42) sealing screws, with a pin forming a longitudinal axis ( 41 ), characterized by, on the pen ( 41 ) arranged thread ( 42 ), which can be screwed into a thread of a screw by rotation about the longitudinal axis in the direction of rotation, and a stop surface ( 44 ), which can be brought into contact with a contact surface of a screw, whereby the screw-in depth of the pin ( 41 ) is fixed in the screw. Screwing tool according to claim 23, characterized in that the pin has an external thread having. Screwing tool according to one of claims 23 or 24, characterized in that the axial end of the pin ( 41 ) the contact surface ( 44 ) forms. Screwing tool according to one of claims 24 or 25, characterized in that the external thread ( 42 ) in the area of the axial end of the pin ( 41 ) is arranged. Screwing tool according to one of claims 23 to 26, characterized in that the axial end of the pin is replaced by a tip ( 41 ), especially with a conical tip ( 43 ) is formed. Screwing tool according to one of claims 23 to 27, characterized by a relative to the pin ( 41 ) movable basic body ( 45 ), which has a first stop surface pointing in the direction of rotation ( 47 ). Screwing tool according to claim 28, characterized in that the position of the first stop surface ( 47 ) relative to the pen ( 41 ) can be fixed. Screwing tool according to one of claims 28 or 29, characterized by one with the base body ( 45 ) detachably connectable spacer ring ( 46 ), which has a second stop surface pointing in the direction of rotation ( 48 ), whereby the spacer ring ( 46 ) on the base body ( 45 ) can be brought into contact in such a way that the distance between the two stop surfaces ( 47 . 48 ) corresponds essentially to the insertion depth Δ2, which is the axial end of the pin ( 41 ) can be screwed into the screw. Screwing tool according to claim 30, characterized in that the base body ( 45 ) and the spacer ring ( 46 ) are designed as cylinders, the pin ( 41 ) on the inner surface of the base body ( 45 ) and the spacer ring ( 46 ) is slidably mounted. Valve adapter ( 50 ) with a valve opening ( 51 ) and with a hose intake opening ( 52 ), characterized in that the hose receptacle opening has a web running around it ( 53 ) which tapers continuously radially inwards and which the hose receiving opening ( 52 ) reduced to a diameter that is slightly smaller than the diameter of the in the hose receiving opening ( 52 ) receivable hose. Valve adapter according to claim 32, characterized in that the valve receiving opening ( 519 a stamp ( 54 ) through which the valve needle when in the valve receiving opening ( 51 ) recorded valve can be actuated and that a gas passage opening ( 55 ) for communicating connection of the valve opening ( 51 ) and the hose intake opening ( 52 ) is arranged. Flow stop ( 60 ) for an elastic hose, characterized by a slot ( 62 ) of varying width into which the hose can be inserted, the slot ( 62 ) can be moved relative to the hose from a first position, in which a gas flow through the hose is possible, into a second position, in which the slot width is reduced compared to the first position, so that the gas flow due to the clamping action of the slot ( 62 ) is prevented on the elastic hose. Tire repair kit with a sealing screw ( 1 ) according to Claims 1 to 11 and / or with a countersinking tool ( 20 ) according to claims 12 to 22 and / or with a screwing tool ( 40 ) according to claims 23 to 31 and / or with a valve adapter ( 50 ) according to claims 32 to 33 and / or with a flow barrier ( 60 ) according to claim 34 and / or with an elastic hose. Procedure for sealing a hole ( 70 ) in the tread ( 71 ) a tubeless tire ( 72 ) where a sealing element ( 1 ) in the area of the tread ( 71 ) in the hole ( 70 ) is used, characterized in that in a first step around the hole ( 70 ) in the tread ( 71 ) essentially up to the base of the profile ( 35 ) extending plane sink ( 73 ) whose diameter is at least equal to that from the hole ( 70 ) section pointing towards the tread ( 4 ) of the sealing element ( 1 ) and that in a further step the sealing element ( 1 ) so in the hole ( 70 ) that the out of the hole ( 70 ) towards the tread ( 71 ) pointing section ( 4 ) completely in the plane sink ( 73 ) is recorded. A method according to claim 36, characterized in that the sealing element ( 1 ) from the tread ( 71 ) in the hole ( 70 ) is used. Method according to one of claims 36 or 37, characterized in that a sealing screw ( 1 ) according to one of claims 1 to 11 is used. Method according to one of claims 36 to 38, characterized in that an essentially circular plane sink ( 73 ) is created. Method according to one of claims 36 to 39, characterized in that the plane sink ( 73 ) in the tread ( 71 ) cut and / or punched and / or milled and / or created by the action of temperature. Method according to one of claims 36 to 40, characterized in that the sealing element ( 1 ) by screwing into the hole ( 70 ) is used. Method according to one of claims 36 to 41, characterized in that the sealing element ( 1 ) to a defined depth in the hole ( 70 ) is used. A method according to claim 42, characterized in that the defined depth by creating a section ( 4 ) of the sealing element on the base of the profile ( 35 ) is determined. Method according to one of claims 36 to 43, characterized in that the sealing element ( 1 ) is screwed in by means of a screwing tool according to claims 23 to 31. A method according to claim 44, characterized in that the defined depth with the insertion tool ( 40 ) using the spacer ring ( 46 ) is determined. A method according to claim 45, characterized in that the sealing element ( 1 ) using the insertion tool ( 40 ) without the spacer ring ( 46 ) is screwed in. Method according to one of claims 36 to 46, characterized in that in a step preceding the first step, an existing foreign body from the hole ( 70 ) Will get removed. Method according to one of claims 36 to 47, characterized in that in a step preceding the first step, the profile depth (T) in the vicinity of the hole ( 70 ) is determined. Method according to one of claims 36 to 48, characterized in that the plane sink ( 73 ) using a countersink tool ( 20 ) is cut according to claims 12 to 22. A method according to claim 49, characterized in that the profile depth (T) by means of the countersinking tool ( 20 ) using the spacer ring ( 30 ) is determined. The method according to claim 50, characterized in that the plane sink ( 73 ) using the countersink tool ( 20 ) without the spacer ring ( 30 ) is cut. Method according to one of claims 36 to 51, characterized in that the sealed tire ( 81 ) is filled with a gas by the following steps, - connecting the valve ( 84 ) of the sealed tire ( 81 ) with the valve ( 85 ) a tire filled with gas or air ( 80 ) over a hose ( 82 ) - effecting gas flow from the gas-filled tire ( 80 ) to the sealed tire ( 81 ) up to a desired pressure. A method according to claim 52, characterized in that the gas flow by means of a flow barrier ( 60 ) is regulated according to claim 34. Method according to one of claims 52 or 53, characterized in that for connecting the valves ( 84 . 85 ) a valve adapter ( 50 ) is used according to claims 23 to 33.