DE102021129082A1 - Bushing device, system and method for reinforcing a through hole of a base material - Google Patents

Abstract

The invention relates to a bushing device for reinforcing, in particular for stiffening, a through hole in a base material with an outer component and an inner component. The inner component has an external thread and the outer component has a corresponding internal thread for connecting the inner component and the outer component as required. The outer component also has a centering head portion so that the device is centered in the through-hole of the base material. Furthermore, the invention relates to a system and a method for reinforcing a through hole in a base material.

Description

The invention relates to a bushing device, a system and a method for reinforcing a through-hole of a base material.

Metal bushings are used, for example, to enable screw connections along base materials such as a (fiber composite) laminate. The screw preload forces are therefore conducted via the metal and creep of the laminate is avoided.

Normally, simple bushings with a collar or face are glued into a hole in the laminate on one side, as is also the case in 1 is shown. The adhesive cannot be reliably or only with difficulty pressed into the entire adhesive gap. In addition, there are difficulties in aligning the bushing flush until the adhesive has hardened. Furthermore, a centering of the socket in the through hole is not possible or only possible with great difficulty. In this case, the laminate thickness tolerance is compensated for via the adhesive layer thickness below the socket head or the end face, which can impair the adhesive strength.

The object of the present invention is to specify a bushing device which overcomes the above disadvantages of the prior art, enables simple manufacture and use and provides a high-quality connection for a base material such as a (fiber composite) laminate or the like. Furthermore, it is the object of the invention to specify a corresponding system and a corresponding method.

This object is solved with regard to the socket device by the subject matter of independent claim 1, with regard to the system by the subject matter of independent claim 7 and with regard to the method by the subject matter of independent claim 11. Preferred embodiments are respectively in specified in the dependent claims.

According to the present invention, there is provided a bush device for reinforcing, in particular for stiffening, a through hole of a base material with an outer component and an inner component. The inner component has an external thread and the outer component has a corresponding internal thread for connecting the inner component and the outer component as required. Furthermore, the outer component has a centering head section, so that the device can be centered or can be centered in the through-hole of the base material.

The present invention is based on the basic idea of being able to center a socket device in a through-hole with the aid of its geometric shape. In this way, a (self) centering of the socket device is already ensured by assembling the outer and inner components.

On the basis of its two-part configuration, a length or height of the bushing device can also be adjusted and the bushing device can thus be adapted to the base material or its thickness in order to ensure a flush termination on one side.

In addition, the two-part design of the socket device can bring about an advantageous distribution of a fixing component that is preferably to be used, in particular an adhesive or the like, during assembly, so that the socket device is secured or fixed in the through hole of the base material.

Preferably, the inner and outer components can be provided from a metal. Furthermore, it is possible for the inner and outer components to have a different material or a combination of materials, in particular depending on the intended application and the base material.

According to a preferred embodiment, the centering head section of the outer component has a conical shape, so that the conically shaped head section is supported in a centering manner on an edge and/or a depression of the through-hole of the base material.

Because the outer component has a centering head section, in particular a conically shaped head section, the socket device can (itself) center and align itself in the assembled state of the outer and inner components in the through-hole of the base material.

In this way, there is preferably an at least approximately constant distance from the inside of the through-hole of the base material around the socket device. If the bushing device is to be fixed in the through-hole with a fixing component, such as an adhesive or the like, the centered arrangement of the bushing device can result in an even distribution around the bushing device.

Alternatively, the socket device can be used independently, ie in particular without an additional fixing component.

The (self) centering of the bushing device simplifies the installation and assembly of the bushing device in the through-hole of the base material. In addition, a fixing component can be distributed evenly within the through hole and fix and support the socket device evenly and symmetrically.

In a preferred embodiment, at least one outlet opening is provided on an end face of the outer component and on an end face of the inner component, with two outlet openings preferably being provided in each case.

The at least one outlet opening can serve as an indicator that sufficient material of the fixing component has filled the through-hole around the socket device. The excess fixing component can exit through the outlet openings of the inner component and the outer component and indicates that the through-hole of the base material has been sufficiently, preferably completely, filled.

In addition, the at least one outlet opening on the end face of the outer or inner component can be provided as an interface for a face wrench, so that the outer component and the inner component can be screwed together using an additional tool.

Thus, the outlet openings provide simplified assembly and secure, sufficient filling with a fixing component can be guaranteed in order to ensure the fixing of the socket device.

According to a further preferred embodiment, the end face of the inner component and the end face of the outer component each have an outside diameter that is larger than a diameter of the through-hole of the base material.

After the outer component and the inner component have been screwed together, the socket device is arranged and centered in the through-hole of the base material in a non-positive and/or positive manner.

The use of a fixing component, such as an adhesive or the like, is used in particular for additional fixing of the bushing device in the through hole of the base material and for fixed centering, in particular after the fixing component has hardened. In this way, the socket device is supported and fixed in the through hole.

According to a further embodiment, the outer component has a receiving opening for receiving a connecting means, in particular a screw, a rivet, a bolt or the like.

In this way, the bushing device can serve as a reinforcement of the through-hole of the base material and allow the use of screws or the like as connecting means, while at least substantially avoiding deformation or yielding of the base material.

According to a preferred embodiment, the inner component is designed with a receiving opening, preferably for receiving a connecting means such as a screw, a rivet or the like, with a threaded bore, a stud bolt, preferably with an external thread, or as a cup-shaped bushing to extend the thread coverage for the if necessary, connection to the external component.

The receiving opening of the inner component, in cooperation with the receiving opening of the outer component, can serve to receive a screw or a rivet or the like, so that the bushing device serves as a reinforcement or stiffening of the through hole of the base material.

Alternatively, the inner component can be designed with a threaded bore or an internal thread in order to accommodate a screw or to enable screwing. Other alternative designs, such as the design of the inner component with a central stud or as a cup-shaped bushing, in particular to extend the thread coverage for the outer component, enable a wide range of possible uses of the bushing device for a wide variety of base materials.

The socket device can therefore be used flexibly and variably. In particular, an outer component can be used with different design options for the inner component.

According to a subsidiary aspect of the invention, a system is provided with a socket device according to the invention and a base material, in particular a laminate or Fiber composite laminate having at least one through hole, wherein the bushing device is intended to be arranged in the through hole.

In a preferred embodiment, the through-hole has a countersink, preferably a conical countersink, at one end, so that the socket device terminates flush with the base material on one side.

In this way, one side of the base material in combination with the socket device can represent an even, smooth finish, in particular regardless of the thickness of the base material. The socket device can be adjusted to different thicknesses of the base material using the outer and inner components that can be connected, in particular screwed, as required, so that a flush finish on one side of the base material is always ensured.

According to a preferred embodiment, the system also has a fixing component, in particular an adhesive or the like, for fixing the socket device in the through-hole of the base material.

An adhesive can preferably be introduced in liquid form as a fixing component into the through-hole with the arranged socket device and can harden after the through-hole of the base material has been filled.

In this way, the bushing device can be fixed in the through-hole by the (hardened) fixing component and supported in its centered orientation.

According to one embodiment, the system also has a connecting means, in particular a screw, a rivet or the like, with the socket device being provided in the base material to accommodate the connecting means.

With the help of the connecting means, in combination with the socket device, the base material can therefore advantageously be fastened, for example, to a surface, in particular screwed or clamped or the like. The bushing device prevents deformation or flow of the base material, in particular a laminate.

According to a further subsidiary aspect of the invention, a method is provided for reinforcing, in particular for stiffening, a through hole in a base material by means of a bushing device and/or by means of a system, the outer component and the inner component of the bushing device being introduced into the through hole from opposite sides of the base material and be connected to each other if necessary.

In particular, the outer component and the inner component can be screwed together in the through hole of the base material.

Here, the bushing device centers itself in the through hole. Furthermore, the total length of the assembled bushing device can be adjusted to the thickness of the respective base material by screwing the outer and inner components together.

In a preferred embodiment, during and/or after the necessary connection of the outer component to the inner component in the through hole of the base material, a fixing component is introduced into the through hole, preferably counter to the connection direction for the necessary connection of the outer component and the inner component, so that the fixing component moves along the Through hole of the base material spreads, the through hole with the socket device arranged therein, preferably completely, filled and fixed the socket device in the through hole.

In this way, a secure fixation and supported centering of the socket device in the through hole of the base material is guaranteed. In particular, the fixing component can advantageously spread out in the through hole and fill it in combination with the socket device, so that at least approximately complete filling of the through hole is ensured.

• 1 Buchse gemäß dem Stand der Technik;
• 2 ein erstes Ausführungsbeispiel einer Buchsenvorrichtung in Kombination mit einem Grundmaterial;
• 3 Buchsenvorrichtung im verbundenen bzw. eingebauten Zustand gemäß dem Ausführungsbeispiel nach 2;
• 4a-4b Darstellung des Zusammenbaus einer Buchsenvorrichtung gemäß dem Ausführungsbeispiel nach 2; und
• 5a-5d weitere Ausführungsbeispiele für eine Buchsenvorrichtung, insbesondere einer Innenkomponente der Buchsenvorrichtung.

The present invention is explained in more detail below using exemplary embodiments according to the attached figures. Show it:

• 1 prior art bushing;
• 2 a first embodiment of a socket device in combination with a base material;
• 3 Socket device in the connected or installed state according to the embodiment 2 ;
• 4a-4b Representation of the assembly of a socket device according to the embodiment 2 ; and
• 5a-5d further exemplary embodiments for a socket device, in particular an inner component of the socket device.

1 shows a disadvantageous configuration of existing bushings 110 from the prior art, in which both the positioning of the bushing 110 and its fastening in the through-hole of the base material 120 are difficult. In addition, the bushing 110 is adapted to the thickness of the base material 120 by means of the filling with a fixing component 130 essentially blindly.

2 shows a first embodiment of a socket device 10 in combination with a base material 2.

The base material 2, preferably a laminate or fiber composite laminate or the like, is formed with a through hole 4, which has a conical countersink 6.

The bushing device 10 is shown with an outer component 30 and an inner component 20 . The outer component 30 is formed with an internal thread 32 and the inner component 20 with a corresponding external thread 22 for connection to one another as required. In this way, the inner component 20 and the outer component 30 can be introduced into the through hole 4 from two sides of the base material 2 and connected to one another.

Based on the connection of inner and outer component 20; 30, the length of the socket device 10 can be adjusted to the thickness of the base material 2.

The inner component 20 and the outer component 30 each have a head portion 26; 36 with an end face 28; 38 on. The end faces 28; 38 are provided here with an (outer) diameter that is larger than a diameter of the through hole 4 of the base material 2. In this way, the socket device 10 can be supported on both sides of the through hole 4 in the inserted or installed state.

The head section 36 of the outer component 30 is conically shaped or designed in such a way that the outer component 30 can center the socket device 10 in the through hole 4, in particular in cooperation with the conical countersinking 6 of the through hole 4. Here, the outer component 30 can contact the side surface of the base material 2 form a concise conclusion.

The inner component 20 can according to 2 have a head section 26 which has a peripheral shoulder. In this way, the introduction of a fixing component 9 for filling the through hole 2 can be facilitated (see in particular 4a and 4b) .

Furthermore, the end faces 28; 38 or head portions 26; 36 of the inner and outer components 20; 30 each with two outlet openings 24; 34 trained.

The outlet openings 24; 34 can serve as an interface for a face wrench to screw the inner and outer components 20; 30 to facilitate.

Furthermore, excess fixing component 9 can escape through the outlet openings 24; 34 emerge and thus indicate that the through hole 4 is sufficiently filled with the socket device 10 arranged therein.

3 12 shows a socket device in the connected or installed state according to the exemplary embodiment 2 .

According to 3 are the inner component 20 and the outer component 30 along their external and internal threads 22, respectively; 32 are screwed together so that there is a flush finish with the base material 2 on one side. In this sense, the bushing device 10 is adjusted to the thickness of the base material 2 .

The centering head section 36 of the outer component 30, with its conical shape, enables, in cooperation with the conical countersinking 6 of the through hole 4, an alignment of the socket device 10 in the middle or in the center of the through hole 4 of the base material 2.

In this way, the bush device 10 can reinforce the through hole 4 of the base material 2 .

4a and 4b show an assembly of the socket device according to the embodiment 2 .

The inner component 20 and the outer component 30 are introduced into the through-hole 4 from opposite sides of the base material 2 and, if necessary, connected to one another, in particular screwed.

In the 4a the introduction of the fixing component 9 is shown during the assembly of the socket device 10 in the through hole 4 (see black arrow representations).

Preferably, the fixing component 9 according to 4a opposite to the connection direction of the outer component 30 with the inner component 20 (see single large arrow in 4a) introduced or spreads the fixing component 9 against the direction of connection of the inner and outer component 20; 30 from (see four small arrows in 4a) .

As in 4b shown, a substantially complete filling of the through hole 4 can be ensured in this way. After the fixing component 9 has hardened, as in 4b As shown, the female device 10 is fixed in the through hole 4 and the centered alignment is supported.

Also can according to 4a and 4b the excess thread portions of the inner and outer components 20; 30 filled with the fixing component 9 / be. After the fixing component 9 has hardened, only a destructive detachment of the connection is possible.

5a until 5d show further exemplary embodiments for a socket device 10, in particular an inner component 20 of the socket device 10.

In 5a the inner component is shown with a receiving opening 40 for a screw, a rivet or the like, as well as in the exemplary embodiment according to FIG 2 shown. Furthermore, according to 5b a through hole with an internal thread 42 for a screw can be provided as a connecting means in the inner component 20 .

In 5c a variant of the inner component 20 is shown, wherein a stud 44 is provided. The stud bolt 44 can interact with the corresponding receiving opening 40 of the outer component 30 accordingly. In this sense, the (stud)bolt of the inner component 20 can protrude beyond the flush termination of the bushing device 10 with the base material 2 in order to allow a connection of the laminate to an external surface/material.

In 5d an additional alternative of the inner component 20 is shown. In particular, the inner component 20 is shown in terms of a cup-shaped socket shape. Such an embodiment variant of the inner component 20 can be used in particular for use with thin base materials 2 in order to increase a thread overlap with the outer component 30 and thus to ensure a secure connection.

Furthermore, based on an embodiment according to 5d the amount of fixing component 9 used can be increased in order to ensure secure fixing and support of the socket device 10 in the through hole 4 of the base material 2.

In summary, the present invention provides an advantageous bushing device which can be centered in a through hole to be reinforced of a base material (itself) and also allows advantageous filling with a fixing component. In addition, the bushing device 10 according to the invention is suitable for use with base materials of different thicknesses and can be variably adjusted.

Both cost-effective manufacture and simple use or simplified installation are provided by the socket device according to the invention.

Reference List

1

system

2

base material

4

through hole

6

(conical) countersink

8th

lanyard

9

fixing component

10

bushing device

20

interior component

22

external thread

24

exit port

26

head section

28

face

30

exterior component

32

inner thread

34

exit port

36

head section

38

face

40

intake opening

42

threaded hole

44

studs

46

cup-shaped socket shape

110

base material

120

Rifle

130

fixing component

Claims (12)

Bushing device (10) for reinforcing, in particular for stiffening, a through hole (4) in a base material (2) with an outer component (30) and an inner component (20), the inner component (20) having an outer thread (22) and the outer component (30 ) has a corresponding internal thread (32) for connecting the inner component (20) and the outer component (30) as required, the outer component (30) having a centering head section (36) so that the socket device (10) in the through hole (4) of the base material (2) is centered. Bushing device (10) according to claim 1 , characterized in that the centering head section (36) of the outer component (30) has a conical shape, so that the conically shaped head section (36) is located at an edge and/or a depression (6) of the through hole (4) of the base material (2 ) centered. Socket device (10) according to one of the preceding claims, characterized in that at least one outlet opening (24; 34) is provided on an end face (38) of the outer component (30) and on an end face (28) of the inner component (20), preferably two outlet openings (24; 34) are provided. Socket device (10) according to one of the preceding claims, characterized in that the end face (28) of the inner component (20) and the end face (38) of the outer component (30) each have an outer diameter which is larger than a diameter of the through hole (4 ) of the base material (2). Socket device (10) according to one of the preceding claims, characterized in that the outer component (30) has a receiving opening (40) for receiving a connecting means, in particular a screw, a rivet, a bolt or the like. Socket device (10) according to one of the preceding claims, in particular according to claim 5 , characterized in that the inner component (20) is formed with a receiving opening (40), preferably for receiving a connecting means such as a screw, a rivet or the like, with a threaded bore (42), a stud (44), preferably with a External thread, or as a cup-shaped socket shape (46) to extend the thread coverage for the required connection to the outer component (30). System (1) with a socket device (10) according to one of the preceding claims and a base material (2), in particular a laminate or fiber composite laminate, which has at least one through hole (4), the socket device (10) being arranged in the through hole (4 ) is provided. System (1) after claim 7 , characterized in that the through hole (4) has a countersink (6), preferably a conical countersink (6), at one end, so that the socket device (10) terminates flush with the base material (2) on one side. System (1) after claim 7 or 8th , characterized in that the system (1) also has a fixing component (9), in particular an adhesive, for fixing the socket device (10) in the through hole (4) of the base material (2). System (1) according to one of Claims 7 until 9 , characterized in that the system (1) further comprises a connecting means, in particular a screw, a rivet or the like, wherein the socket device (10) is provided in the base material (2) for receiving the connecting means. Method for reinforcing, in particular for stiffening, a through hole (4) of a base material (2) by means of a bushing device (10) according to one of Claims 1 until 6 and/or by means of a system (1) according to one of Claims 7 until 10 , wherein the outer component (30) and the inner component (20) of the socket device (10) are introduced into the through hole (4) from opposite sides of the base material (2) and connected to one another as required. procedure after claim 11 , characterized in that during and/or after the required connection of the outer component (30) to the inner component (20) in the through hole (4) of the base material (2), a fixing component (9) is introduced into the through hole (4), preferably counter to the connection direction for the required connection of the outer component (30) and the inner component (20), so that the fixing component (9) spreads along the through hole (4) of the base material (2), the through hole (4) with the socket device (10 ) filled and the socket device (10) fixed in the through hole (4).

Images