DE102020202120A1 - Method for producing a connection part for arrangement at one end of a stabilizer body and use of such a connection part for producing a stabilizer - Google Patents

Abstract

The invention relates to a method for producing a connection part (9, 23, 26) to be arranged at one end (6, 7) of a stabilizer body (3), the connection part (9, 23, 26) being designed for arranging a pendulum support and by means of an injection molding tool is injection molded from a plastic material. In order to reduce the manufacturing effort for differently designed connection parts (9, 23, 26), the method is characterized in that different variants of the connection part (9, 23, 26) can be produced with the same injection molding tool, with the option of forming a first variant of the connection part ( 9) a first reinforcing element (20) is arranged in the injection molding tool and at least partially encapsulated or encapsulated by the plastic material, or to form at least one further variant of the connecting part (23, 26) a second reinforcing element different from the first reinforcing element (20) and / or a plurality of further reinforcement elements (24, 25, 27, 28, 29, 30) are arranged in the injection molding tool and at least partially encapsulated or encapsulated by the plastic material.

Description

The invention relates to a method for producing a connection part to be arranged at one end of a stabilizer body, the connection part being designed for arranging a pendulum support and being injection molded from a plastic material by means of an injection molding tool. The invention also relates to a use of a connecting part produced in this way for producing a stabilizer.

A corresponding connection part is from the DE 10 2010 049 565 A1 famous. Here, for example, a connection part is connected to the end of a stabilizer body by means of a snap connection. For this purpose, the end of the stabilizer body is tubular and has an undercut, which engages behind the spring bar-like region of the connection part. Furthermore, it is disclosed as an alternative that the connection component can be injection-molded onto the end of the stabilizer body.

The disadvantage here is that differently designed connection parts require different tools for their production. Depending on the stiffness requirements and / or load requirements on the connection component, differently designed connection parts must be produced depending on the application. Different tools are usually required for this. This leads to undesirable additional work and high costs.

The object on which the invention is based is to further develop a method of the type mentioned at the beginning in such a way that the manufacturing outlay for differently designed connection parts is reduced. In particular, an alternative embodiment is to be provided.

The object on which the invention is based is achieved with a method according to claim 1 and a use according to claim 9. Preferred developments of the invention can be found in the subclaims and in the following description.

The method is designed to produce a connection part for arrangement at one end of a stabilizer body. In particular, the stabilizer body is part of a stabilizer for a chassis of a vehicle, in particular a motor vehicle. The stabilizer body can be provided and / or produced from a fiber-reinforced plastic or a fiber-plastic composite. The stabilizer and / or the stabilizer body is preferably designed to be curved and implemented as a torsion spring and / or as a spiral spring. In particular, in the context of the present application, a stabilizer body is to be understood as an elongated, strand-like, rod-like and / or tube-like body. Thus, the stabilizer body can be made hollow and / or tubular or made of solid material. In particular, the stabilizer body is designed as a tubular rod or solid rod. Due to the curved design of the stabilizer body, it can be designed to be essentially U-shaped, C-shaped or otherwise curved.

The connection part is designed for arranging a pendulum support and is injection molded from a plastic material by means of an injection molding tool. A connection part for arranging a pendulum support can thus be attached to at least one end of the stabilizer body. In particular, the stabilizer has at least one pendulum support and at least one connection part. Here, the connection part connects the stabilizer body and the pendulum support with one another. The connection between the connection part and the pendulum support is preferably designed to be movable or articulated. The connection part can be designed as an intermediate piece between the pendulum support on the one hand and the stabilizer body on the other hand.

According to the invention, different variants of the connection part can be produced with the same injection molding tool, with a first reinforcing element optionally being arranged in the injection molding tool to form a first variant of the connection part and being at least partially encapsulated or encapsulated by the plastic material, or a from to form at least one further variant of the connection part The second reinforcement element and / or a plurality of further reinforcement elements that are different from the first reinforcement element are arranged in the injection molding tool and are at least partially encapsulated or encapsulated by the plastic material.

The advantage here is that different variants of the connection part can be produced with the same injection molding tool. Thus, several tools do not have to be produced and provided for different designs of the connection part. An otherwise time-consuming conversion of the tool can be dispensed with. In this way, the manufacturing effort, the set-up time and / or the costs for manufacturing different connection parts can be reduced considerably. In particular, the different designs or variants of the connection part are formed by means of different reinforcement elements selected as required. Due to a given interchangeability and / or combinability of different Reinforcing elements can be produced in different variants of the connection part, which meet different stiffness requirements and / or load requirements as required. Here, the injection molding tool is designed in such a way that it can receive or hold various reinforcing elements and / or different combinations of reinforcing elements for forming the connecting part. The reinforcement element inserted into the injection molding tool as required and / or the plurality of inserted reinforcement elements are at least partially or completely encapsulated by the plastic material to form the respective connection part. In this way, corrosion protection for the reinforcement element or for the plurality of reinforcement elements can preferably be implemented at the same time and at least partially.

According to a further development, the injection molding tool has several holders, in particular sliding holders. Here, the at least one reinforcement element and / or several reinforcement elements are each held by predetermined holders or sliding holders in the injection molding tool for the subsequent injection molding of the plastic material. This results in the usability of the injection molding tool for forming different variants of the connection part due to the design of the injection molding tool with a plurality of holders or sliding holders. Depending on whether the connection part is to be formed with a first reinforcement element, a second reinforcement element and / or several further reinforcement elements, these reinforcement elements can each be held in the injection molding tool by specific or predetermined holders from a group of several holders.

The first variant of the connection part and a second variant of the connection part and a third variant of the connection part can preferably be produced with the same injection molding tool. In particular, depending on the variant of the connection part to be formed, a predetermined selection of holders or sliding holders of the injection molding tool for holding the respective reinforcement element or the respective reinforcement elements is used. The second variant of the connection part is preferably designed with at least one more reinforcing element than the first variant of the connection part. In particular, the first variant of the connection part is formed with a single first reinforcing element. Thus, the second variant of the connection part can have at least two reinforcement elements or exactly two reinforcement elements. In particular, the third variant of the connection part is designed with at least one more reinforcing element than the second variant of the connection part. Thus, the third variant of the connection part can have at least three or exactly three reinforcement elements. In this case, the rigidity and / or a load-bearing capacity of the connection part can increase as the number of reinforcement elements increases. The first variant of the connection part is preferably designed for a low load, the second variant of the connection part for a medium load and the third variant of the connection part for a high load on the connection part.

According to a further development, the reinforcement element is designed as a metal insert. Forming the reinforcement element or the plurality of reinforcement elements from metal enables inexpensive and at the same time effective stiffening of the plastic material for forming the respective connection part. In particular, the reinforcement element is designed as a metal bushing, as a metal rib or as a metal structure. The metal structure can be lattice-like or net-like. In particular, the metal structure has a metal bushing from which a plurality of metal ribs extend radially outward. At least one further metal rib can be attached to the outer ends of the metal ribs. At least two outer ends of the metal ribs extending radially outward from the metal bushing are preferably connected to one another by means of a further metal rib. For example, the first reinforcing element can be designed as a metal bushing. The second reinforcement element can be designed as a metal structure, for example.

According to a further development, at least one individual reinforcing element is arranged in a rib formed from the plastic material. In particular, several reinforcement elements are arranged in several ribs formed from the plastic material. The reinforcing elements arranged in the ribs formed from the plastic material are preferably designed as metal ribs. Here, the reinforcement element can be completely embedded in the plastic material. A single reinforcing element is preferably arranged in each case in a single rib formed from the plastic material.

According to a further embodiment, a through opening for arranging the pendulum support is formed in the connection part. In particular, the through opening is formed by means of a reinforcing element designed as a metal bush. In the context of the present invention, a through opening can be understood to mean a round or non-round recess which penetrates the connecting part. Preferably, the through opening is completely surrounded by the connecting part and / or the reinforcing element designed as a metal bushing or surround. An articulated connection can be implemented between the connection part and the pendulum support, in particular using the through opening.

The use of a connection part produced according to the invention for producing a stabilizer for a chassis of a vehicle is particularly advantageous. To form the stabilizer, a curved stabilizer body, which forms a torsion spring and / or spiral spring, is provided and / or manufactured from a fiber-reinforced plastic. In a connection step, the connection part for arranging a pendulum support is attached to one end of the stabilizer body. Preferably, a connecting part is connected to the respective end of the stabilizer body at two ends of the stabilizer body facing away from one another. In particular, the two ends of the stabilizer body are arranged facing away from one another. A pendulum support, in particular articulated, can be arranged on the connecting part. The arrangement or fastening of the connection part at the end of the stabilizer body can be implemented by means of a suitably designed, form-fitting, force-fitting and / or material connection.

Stabilizers of the type mentioned above are also referred to as torsion bar springs. Stabilizers or torsion bar springs are generally known in automotive engineering, in particular in chassis construction, for use as roll stabilizers. These are components which can be subjected to torsion and / or bending and which reduce the rolling movements of a vehicle. To stabilize the body roll of motor vehicles, stabilizers can be arranged between the wheels on an axle of a motor vehicle. If the wheels on an axle are deflected alternately, stabilizers distribute the axle load and thus ensure an even axle load distribution. In this way, the driving behavior of a motor vehicle can be positively influenced in such a way that, for example, the coefficient of adhesion of the wheels arranged on an axle can always be kept almost identically at a good level.

The free ends of the stabilizer or the stabilizer body can each be arranged and / or supported via pendulum supports on a separate component, for example a wheel-guiding element such as a wheel carrier or a wheel-guiding link. The connection part can on the one hand be connected to the end of the stabilizer body and on the other hand enable an arrangement or mounting of a pendulum support.

• 1 eine perspektivische Seitenansicht eines Stabilisators mit einem erfindungsgemäß hergestellten Anbindungsteil,
• 2 eine Seitenansicht einer ersten Variante eines erfindungsgemäß hergestellten Anbindungsteils,
• 3 eine perspektivische Seitenansicht der ersten Variante des Anbindungsteils gemäß 2,
• 4 eine Seitenansicht einer zweiten Variante eines erfindungsgemäß hergestellten Anbindungsteils, und
• 5 eine Seitenansicht einer weiteren Variante eines erfindungsgemäß hergestellten Anbindungsteils.

The invention is explained in more detail below with reference to the figures. Here, the same reference symbols relate to the same, similar or functionally identical components or elements. Show it:

• 1 a perspective side view of a stabilizer with a connection part produced according to the invention,
• 2 a side view of a first variant of a connection part produced according to the invention,
• 3 a perspective side view of the first variant of the connection part according to FIG 2 ,
• 4th a side view of a second variant of a connection part produced according to the invention, and
• 5 a side view of a further variant of a connection part produced according to the invention.

1 Figure 3 shows a perspective side view of a stabilizer 1 with a connection part produced according to the invention 2 . By the stabilizer 1 it is a torsion bar spring device that can be subjected to torsion and bending and can be used on the chassis of a vehicle to avoid rolling movements of a vehicle. The stabilizer 1 has a stabilizer body 3 on. The stabilizer body 3 is essentially rod-like or rod-like. Furthermore is the stabilizer body 3 curved realized. In this embodiment, the stabilizer body is 3 essentially U-shaped. As a result, the stabilizer body 3 a first leg 4th and a second leg 5 on. The two legs 4th , 5 are aligned essentially parallel to one another. The stabilizer body 3 has two free ends arranged facing away from one another 6th , 7th on. Here is the end 6th the first leg 4th and the end 7th the second leg 5 assigned.

The stabilizer body 2 is made in this embodiment from a fiber-reinforced plastic or from a fiber-plastic composite. For example, glass fibers, aramid fibers, Kevlar fibers, carbon fibers or mixtures thereof can be used as fiber material. According to this example, the fiber material is embedded in a thermoset plastic matrix. Furthermore is the stabilizer body 3 in this embodiment tubular and made of solid material. One connection part each 2 is at either end 6th , 7th with the stabilizer body 3 tied together. The connecting parts 2 are designed for arranging a pendulum support, not shown here in each case. In this exemplary embodiment, the connecting parts 2 for this purpose, one through-opening each time 8th on. Thus, the connecting parts serve 2 as a kind of interface for power transmission between the stabilizer body 3 and the pendulum supports not shown here.

Connection parts that are designed or manufactured in different ways are shown below 2 explained in more detail.

2 shows a side view of a first variant of a connection part produced according to the invention 9 . Here, the connection part 9 as the connecting part 2 according to 1 be used.

The connecting part 9 is injection molded from a plastic material. Furthermore, the connection part 9 an attachment portion 10 for arranging or fastening the connection part 10 at the free end 6th or. 7th of the stabilizer body 3 according to 1 on. The connecting part 9 also has an assembly section 11 for mounting, arranging or storing a pendulum support not shown here. The fastening section 10 and the mounting section 1 form a common, one-piece part. The passage opening 8th is in a central area of the mounting section 11 arranged. In this embodiment, the mounting portion is plate-like.

The connecting part 9 has several ribs formed from the plastic material 12th , 13th , 14th , 15th , 16 , 17th , 18th , 19th on. This is where the ribs form 12th , 13th in this embodiment a common web-like edge of the connection part 9 . Ribs 14th , 15th , 16 extend from the rib 12th radially in the direction of the through opening 8th . Ribs 17th , 18th , 19th extend from the rib 13th radially in the direction of the through opening 8th .

The connecting part 9 has a first reinforcing element 20th on. In this embodiment the reinforcement element is 20th designed as a metal sleeve. The reinforcement element designed as a metal bushing 20th determines or defines the passage opening 8th . An outer periphery of the reinforcement member 20th is made of the plastic material of the connection part 9 encapsulated or encapsulated in a ring-like manner. One inside 21 of the reinforcement element 20th is, however, not covered by the plastic material in this exemplary embodiment.

3 shows a perspective side view of the first variant of the connection part 9 according to 2 . The reinforcement element designed as a metal bushing 20th can by means of contours not shown here on its outer circumference in a form-fitting manner with the plastic material of the connection part 9 cooperate. Thus, the reinforcing element 20th at least positively with the plastic material of the connection part 9 be connected. Alternatively or additionally, the reinforcing element 20th cohesively and / or non-positively with the plastic material of the connection part 9 be connected. It is essential that the reinforcement element 20th in relation to the plastic material of the connection part 9 is fixed immovably on this.

The fastening section 10 is tubular or blind hole-like in this embodiment. Thus, the fastening section 10 a recording 22nd on. In the recording 22nd can the free end 6th or. 7th of the stabilizer body 3 according to 1 be plugged in. In this embodiment, the recording 22nd a hollow cylindrical shape. By means of the recording 22nd is the connection part 9 fixed in position at the end 6th or 7th of the stabilizer body 3 according to 1 determinable.

4th shows a side view of a second variant of a connection part produced according to the invention 23 . The connecting part 23 essentially corresponds to the connection part in terms of its structure 9 according to 2 and 3 . In this respect, reference is also made to the preceding description in order to avoid repetition.

In contrast to the connection part 9 has the connection part 23 in addition to the reinforcement element 20th two more reinforcement elements 24 , 25th on. The reinforcement elements 24 , 25th are designed as metal ribs. The reinforcement element 24 is within the rib formed from the plastic material 12th arranged. The reinforcement element 25th is within the rib formed from the plastic material 13th arranged. In other words, they are reinforcing elements 24 , 25th into the plastic material to form the rib 12th or. 13th embedded. By means of the metal reinforcement elements 24 , 25th are thus the ribs 12th , 13th additionally reinforced. Therefore, with the connection part 23 higher rigidity and / or load requirements can be met than with the connection part 9 according to 2 and 3 .

5 shows a side view of a further variant of a connection part produced according to the invention 26th . The structure of the connection part 26th essentially corresponds to that of the connection part 9 or. 23 the 2 until 4th . In this respect, reference is also made to the preceding description in order to avoid repetition.

The connecting part 26th has in addition to the reinforcing elements 20th , 24 , 25th further reinforcement elements 27 , 28 , 29 , 30th on. Here are the reinforcement elements 27 until 30th each designed as a metal rib. The reinforcement element 27 is in the plastic material of the rib 14th embedded. The reinforcement elements are corresponding to this 28 , 29 or. 30th in the plastic material of the rib 16 , 17th or. 19th embedded.

Because of the additional reinforcement elements 27 until 30th can the connection part 26th meet higher rigidity and / or load requirements such as the connection part 9 or 23 . In this embodiment the reinforcement elements are 20th , 24 , 25th and 27 until 30th each designed as individual components. Alternatively, these components can be connected to one another in one piece, so that a single reinforcement element designed as a metal structure results.

The connecting parts 9 , 23 , 26th are produced in an injection molding tool not shown here. Here are the connecting parts 9 , 23 , 26th produced using the same injection molding tool. To hold the connection part depending on the desired variant 9 , 23 , 26th required reinforcement elements 20th , 24 , 27 until 30th the injection molding tool has several sliding holders which, as required, are used to hold the reinforcing elements 20th , 24 , 27 until 30th can be used.

List of reference symbols

1

stabilizer

2

Connection part

3

Stabilizer body

4th

first leg

5

second leg

6th

free end

7th

free end

8th

Through opening

9

Connection part (first variant)

10

Fastening section

11

Mounting section

12th

rib

13th

rib

14th

rib

15th

rib

16

rib

17th

rib

18th

rib

19th

rib

20th

Reinforcement element

21

inside

22nd

recording

23

Connection part (second variant)

24

Reinforcement element

25th

Reinforcement element

26th

Connection part (further variant)

27

Reinforcement element

28

Reinforcement element

29

Reinforcement element

30th

Reinforcement element

QUOTES INCLUDED IN THE DESCRIPTION

This list of the documents listed by the applicant was generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Patent literature cited

• DE 102010049565 A1 [0002]

Claims (7)

A method for producing a connection part (9, 23, 26) to be arranged at one end (6, 7) of a stabilizer body (3), wherein the connection part (9, 23, 26) is designed for arranging a pendulum support and is composed of a Plastic material is injection molded, characterized in that different variants of the connection part (9, 23, 26) can be produced with the same injection molding tool, optionally with a first reinforcement element (20) arranged in the injection molding tool and at least is partially encapsulated or encapsulated by the plastic material, or - to form at least one further variant of the connecting part (23, 26) a second reinforcement element different from the first reinforcement element (20) and / or several further reinforcement elements (24, 25, 27, 28) , 29, 30) arranged in the injection molding tool and at least partially made of the plastic material be encapsulated or encapsulated. Procedure according to Claim 1 , characterized in that the injection molding tool has several holders, in particular sliding holders, the at least one reinforcing element (20) and / or several reinforcing elements (24, 25, 27, 28, 29, 30) each from predetermined holders in the injection molding tool for subsequent Injection molding of the plastic material is held or are. Procedure according to Claim 1 or 2 , characterized in that the first variant of the connection part (9) and a second variant of the connection part (23) and a third variant of the connection part (26) can be produced with the same injection molding tool, preferably the second variant of the connection part (23) with at least one Reinforcing element (24, 25) designed more than the first variant of the connection part (9), in particular the third variant of the connection part (26) with at least one reinforcement element (27, 28, 29, 30) more than the second variant of the connection part (23 ) educated. Method according to one of the preceding claims, characterized in that the reinforcement element (20, 24, 25, 27, 28, 29, 30) is designed as a metal insert, in particular a reinforcement element designed as a metal bushing, as a metal rib or as a metal structure is used (20, 24, 25, 27, 28, 29, 30) are used. Method according to one of the preceding claims, characterized in that at least one single reinforcing element (24, 25, 27, 28, 29, 30) is arranged in a rib (12, 13, 14, 16, 17, 19) formed from the plastic material , in particular several reinforcing elements (24, 25, 27, 28, 29, 30) are arranged in several ribs (12, 13, 14, 16, 17, 19) formed from the plastic material, preferably a single reinforcing element (24, 25 , 27, 28, 29, 30) arranged in a single rib (12, 13, 14, 16, 17, 19) formed from the plastic material. Method according to one of the preceding claims, characterized in that a through opening (8) for arranging the pendulum support is formed in the connecting part (9, 23, 26), in particular the through opening (8) is formed by means of a reinforcing element (20) designed as a metal bush . Use of a connecting part (9, 23, 26) produced according to one of the preceding claims for producing a stabilizer (1) for a chassis of a vehicle, wherein a curved stabilizer body (3) forming a torsion spring and / or spiral spring is used to form the stabilizer (1) ) is provided and / or manufactured from a fiber-reinforced plastic, and in a connecting step the connecting part (9, 23, 26) for arranging a pendulum support is attached to one end (6, 7) of the stabilizer body (3).

Images