阅读说明：本技术 用于使电路板与用于车辆制动装置的电磁阀的线圈体电接触的接触装置、具有接触装置的电磁阀和用于制造接触装置的方法 (Contact device for electrically contacting a circuit board with a coil body of a solenoid valve for a vehicle brake system, solenoid valve having a contact device, and method for producing a contact d) 是由 R·拉奥 于 2019-09-16 设计创作，主要内容包括：本发明涉及一种用于使电路板(105)与用于车辆制动装置的电磁阀的线圈体(110)电接触的接触装置(100),所述接触装置具有接触弹簧(115)和销(120)。所述接触弹簧(115)形成为螺旋形并且能导电,并且形成为在第一弹簧端部(122)上与所述电路板(105)已接触或能接触并且在与所述第一弹簧端部(122)相对置的第二弹簧端部(125)上与所述线圈体(110)已接触或能接触,以使得所述电路板(105)能够与所述线圈体(110)弹簧式电接触。所述销(120)能容纳或已容纳在所述接触弹簧(115)的内部空间(130)中,其中,所述销(120)形成为用于在容纳在所述内部空间(130)中的容纳状态下从所述内部空间(130)支撑所述接触弹簧(115)。(The invention relates to a contact device (100) for electrically contacting a circuit board (105) to a coil former (110) of a solenoid valve for a vehicle brake device, comprising a contact spring (115) and a pin (120). The contact spring (115) is formed in a spiral shape and is electrically conductive and is formed in a manner that it is or can be brought into contact with the circuit board (105) at a first spring end (122) and in a manner that it is or can be brought into contact with the coil body (110) at a second spring end (125) opposite the first spring end (122), in order to make spring-like electrical contact of the circuit board (105) with the coil body (110). The pin (120) can be accommodated or is already accommodated in an interior space (130) of the contact spring (115), wherein the pin (120) is formed for supporting the contact spring (115) from the interior space (130) in an accommodated state accommodated in the interior space (130).)

1. A contact arrangement (100) for electrically contacting a circuit board (105) with a coil former (110) of a solenoid valve for a vehicle brake device, wherein the contact arrangement (100) has at least the following features:

-a helical electrically conductive contact spring (115) which is formed in contact or contactable with the circuit board (105) at a first spring end (122) and in contact or contactable with the coil body (110) at a second spring end (125) opposite the first spring end (122) in order to enable spring-like electrical contact of the circuit board (105) with the coil body (110); and

-a pin (120) which is or has been accommodated in an inner space (130) of the contact spring (115), wherein the pin (120) is formed for supporting the contact spring (115) from the inner space (130) in an accommodated state accommodated in the inner space (130).

2. The contact device (100) according to claim 1, wherein a first spring section of the contact spring (115) has a first radius and a second spring section of the contact spring (115) has a second radius, wherein the first radius and the second radius have different dimensions.

3. The contact arrangement (100) according to one of the preceding claims, wherein the pin (120) forms at least one step (135), in particular wherein the step (135) is formed circumferentially on the pin (120).

4. Contact arrangement (100) according to one of claims 2 to 3, wherein the pin (120) is formed and/or arranged in the accommodated state for transmitting a force onto the coil body (110) and/or onto the circuit board (105) in a state in which the contact spring (115) is tensioned between the circuit board (105) and the coil body (110).

5. The contact arrangement (100) according to one of the preceding claims, wherein the pin (120) has an electrically isolating material, in particular a plastic material.

6. Contact arrangement (100) according to one of the preceding claims, having an electrically conductive fusion-welding element (140) which can be or has been arranged in or on the coil body (110), in particular wherein the fusion-welding element (140) has been or can be arranged as a stop for the second spring end (125) of the contact spring (115) and/or is formed for the insertion of the pin end of the pin (120).

7. Contact arrangement (100) according to one of the preceding claims, having the coil body (110) and/or the circuit board (105).

8. Contact device (100) according to one of the preceding claims, wherein the coil body (110) has a recess (145) in which the second spring end (125) and/or the fusion melting element (140) and/or the pin end have been arranged or can be arranged.

9. Solenoid valve having a contact device (100) according to one of the preceding claims.

10. A method (200) for producing a contact arrangement (100) for electrically contacting a circuit board (105) with a coil former (110) of a solenoid valve for a vehicle brake device, wherein the method (200) comprises the following steps:

providing (205) a helical electrically conductive contact spring (115) which is formed in contact or contactable with the circuit board (105) at a first spring end (122) and in contact or contactable with the coil body (110) at a second spring end (125) opposite the first spring end (122) in order to enable spring-like electrical contact of the circuit board (105) with the coil body (110), and a pin (120) which is receivable in an interior space (130) of the contact spring (115), wherein the pin (120) is formed for supporting the contact spring (115) from the interior space (130) in a received state in the interior space (130); and

receiving (210) the pin (120) into an inner space (130) of the contact spring (115).

11. A computer program arranged for carrying out and/or handling the method (200) according to claim 10.

12. A machine-readable storage medium on which a computer program according to claim 11 is stored.

Technical Field

The invention relates to a contact device for electrically contacting a circuit board with a coil body of a solenoid valve for a vehicle brake system, to a solenoid valve having a contact device, and to a method for producing a contact device.

Background

In order to be able to supply the electromagnetic coil with current, different components are used in order to establish an electrical contact between the circuit board and the coil body or the coil.

EP 3109951 a1 describes an electrical unit with an electrically conductive contact spring which is accommodated in an insulating housing.

Disclosure of Invention

Against this background, the object of the present disclosure is to provide an improved contact device for contacting a circuit board with a coil body of a solenoid valve for a vehicle brake device, a solenoid valve having an improved contact device, and a method for producing an improved contact device.

This object is achieved by a contact device for electrically contacting a circuit board with a coil body of a solenoid valve for a vehicle brake device, a solenoid valve for a vehicle brake device and a method for producing a contact device according to the independent claims.

The advantage that can be achieved with the proposed solution is that a spring-like (federbar) electrical contact can be established between the circuit board and the magnet coil, which can still be supported or guided very stably with only very little material.

A contact device for electrically contacting a circuit board to a coil body of a solenoid valve for a vehicle brake device is proposed. The contact device has a contact spring and a pin. The contact spring is formed in a spiral shape and is electrically conductive and is formed in contact or contactable with the circuit board at a first spring end and in contact or contactable with the coil body at a second spring end opposite the first spring end, so that the circuit board can be in spring-like electrical contact with the coil body. The pin can be accommodated or already accommodated in an inner space of the contact spring, wherein the pin is formed for supporting the contact spring from the inner space in the accommodated state accommodated in the inner space.

A coil former is understood to mean an electromagnetic coil or at least one component of an electromagnetic coil, for example a coil or at least one coil section or a coil housing or at least one coil housing section. The contact spring can be cylindrically formed or wound at least in one section. The Pin may be a so-called "Pin", which may be formed, for example, to taper at one free end in order to be insertable, pressable or screwed into the coil body, for example. The contact arrangement proposed here advantageously makes it possible to achieve a stable contact between the circuit board and the coil body, since the contact springs which are or can be arranged between the circuit board and the coil body are stabilized by the pins. Here, the pin may be formed for supporting the contact spring from the inner space in the axial direction and/or in a transverse or radial direction. For example, the outer surface of the pin may be in contact with the contact spring in the accommodated state.

Advantageously, the first spring section of the contact spring has a first radius and the second spring section of the contact spring has a second radius, wherein the first radius and the second radius may have different dimensions. The first spring section may be a section of the contact spring facing and/or comprising the first spring end. The second spring section may be a section of the contact spring facing the second spring end and/or comprising the second spring end. For example, the first radius may be greater than the second radius. Such a contact spring which is narrow in one region can be advantageous for structural or space reasons.

The pin can form at least one step, in particular, wherein the step can be formed around the pin. If the contact spring has the above-mentioned different radii, it can be advantageous to accommodate such a pin in the interior of the contact spring in a form-fitting manner. The step can be arranged in the region of the connecting section between the first spring section and the second spring section. For example, the pin may be arranged and/or formed for axially as well as radially contacting and/or supporting the contact spring in the region of the step.

The pins can be formed and/or arranged in the accommodated state for transmitting a force to the coil body and/or to the circuit board in a state in which the contact spring is tensioned between the circuit board and the coil body. The step can be pressed or pressed onto the second section, for example, in the axial direction. The required force can thus be applied or caused to the printed circuit board and/or the coil former.

It is also advantageous if the pin has an electrically insulating material, in particular a plastic material. For example, at least the outer surface of the pin facing the contact spring may have a plastic material. Thus, the contact spring can be isolated with respect to the housing.

According to an advantageous embodiment, the contact device also has an electrically conductive fusion-welding element which can be or is arranged in or on the coil body, in particular, wherein the fusion-welding element is or is arranged for contacting a stop of the second spring end of the spring and/or is formed for inserting the pin end of the pin. The welding element may be a welding sleeve which is weldable or welded to the electrical lines embedded in or connected to the coil body. The fusion melting element may have a through opening into which the pin end of the pin has been axially inserted or is insertable.

According to one embodiment, the contact device can also have a coil body and/or a circuit board. The coil body may have a recess in which the second spring end and/or the welding element and/or the pin end have been or can be arranged. Such recesses allow a stable, form-fitting accommodation of the coil body. The recesses may form undercuts for reliably holding the fusion-welding element.

The solenoid valve has a contact device, which is embodied in one of the variants described above. Such a solenoid valve may be formed and/or configured for use in a vehicle braking device. Such a solenoid valve, for example a brake valve, also advantageously achieves its aforementioned advantages due to the contact means.

A method for producing a contact device for electrically contacting a circuit board to a coil body of a solenoid valve for a vehicle brake device comprises a providing step and a receiving step. In the providing step, a helical electrically conductive contact spring is provided, which is formed in contact or contactable with the circuit board at a first spring end and in contact or contactable with the coil body at a second spring end opposite the first spring end, so that the circuit board can be resiliently or spring-like electrically contacted with the coil body, and a pin is accommodated in an inner space of the contact spring, wherein the pin is formed for supporting the contact spring from the inner space in an accommodated state accommodated in the inner space. In the accommodating step, the pin is accommodated into the inner space of the contact spring.

In the accommodating step, a pin may be inserted into the inner space or a contact spring may be pulled onto the pin.

The method may also have an electrical contacting step in which the first spring end is in electrical contact with the circuit board and/or the second spring end is in electrical contact with the coil body. The electrical contacting step may be performed before the accommodating step and/or after the accommodating step.

A computer program product or a computer program with a program code can also be used to advantage, which can be stored on a machine-readable carrier or storage medium (for example, semiconductor memory, hard disk memory or optical memory) and is used to carry out, implement and/or manipulate the steps of a method according to one of the preceding embodiments, in particular when the program product or program is implemented on a computer or a device.

Drawings

In the following description, embodiments of the solution presented herein are explained in detail with reference to the drawings. The figures show:

fig. 1 is a schematic cross-sectional side view of a contact arrangement for electrically contacting a circuit board with a coil body of a solenoid valve for a vehicle brake device according to an embodiment; and

fig. 2 is a flow chart of a method for producing a contact arrangement for electrically contacting a circuit board to a coil former of a solenoid valve for a vehicle brake device, according to an exemplary embodiment.

In the following description of an advantageous embodiment of the solution, the same or similar reference numerals are used for the elements shown in the various figures and functioning similarly, wherein repeated descriptions of these elements are omitted.

Detailed Description

If an embodiment includes "and/or" connections between a first feature and a second feature, this should be read as: this example has both the first and second features according to one embodiment, while having either only the first or only the second feature according to another embodiment.

Fig. 1 shows a schematic cross-sectional side view of a contact arrangement 100 for electrically contacting a circuit board 105 with a coil former 110 of a solenoid valve for a vehicle brake device according to one embodiment.

The contact device 100 electrically connects the circuit board 105 to the coil former 110 and is formed as a solenoid valve for a vehicle brake device. The contact device 100 has a contact spring 115 and a pin 120. The contact spring 115 is formed in a spiral shape and is electrically conductive and is formed in contact or contactable with the circuit board 105 on a first spring end 122 and in contact or contactable with the coil body 110 on a second spring end 125 opposite the first spring end 122, so that the circuit board 105 can be in spring-like electrical contact with the coil body 110. The pin 120 can be accommodated or already accommodated in the inner space 130 of the contact spring 115, wherein the pin 120 is formed for supporting the contact spring 115 from the inner space 130 in the accommodated state accommodated in the inner space 130.

According to this embodiment, the pin 120 is accommodated in the inner space 130 of the contact spring 115 in the accommodated state, and the first spring end 122 is in contact with the circuit board 105 and the second spring end 125 is in contact with the coil body 110.

According to this embodiment, a first spring section of the contact spring 115 has a first radius and a second spring section of the contact spring 115 has a second radius, wherein the first radius and the second radius have different dimensions. According to this embodiment, the first spring section comprises a first spring end 122 and the second spring section comprises a second spring end 125. According to this embodiment, the first radius is larger than the second radius.

According to this embodiment, the pin 120 forms a step 135, and according to this embodiment, the step 135 is formed circumferentially on the pin 120. According to this embodiment, the step 135 is arranged in the region of the connecting section of the contact spring 115 between the first spring section and the second spring section. According to this embodiment, the first pin section accommodated in the first spring section has a larger radius than the radius of the second pin section accommodated in the second spring section.

In the tensioned state of the contact spring 115, the pin 120 is formed and/or arranged in the accommodated state for transmitting a force between the circuit board 105 and the coil former 110 onto the coil former 110 and/or the circuit board 105. According to this embodiment, the pin 120 has an electrically isolating material, which according to this embodiment has a plastic material.

Optionally, according to this embodiment, the contact arrangement 100 also has an electrically conductive fusion-welding element 140 which can be arranged or is arranged in or on the coil body 110. According to this embodiment, the fusion melting element 140 has been arranged or arrangeable as a stop for contacting the second spring end 125 of the spring 115 and/or is formed for inserting the pin end of the pin 120.

According to this embodiment, the fusion melting element 140 is accommodated in a recess 145 of the coil body 110. According to this embodiment, the recess 145 forms an undercut 150 in which one end of the fusion melting element 140 is received in a form-fitting manner. According to this embodiment, the longitudinal axis of the fusion melting element 140 extends in the recess 145 transversely to the pin longitudinal axis of the pin 120. According to this embodiment, the pins 120 are arranged through the fusion melting element 140 through-openings in the fusion melting element 140 transversely to the longitudinal axis of the fusion melting element. The second spring end 145 is accommodated in the recess 145 up to the boundary formed by the fusion melting element 140, which forms a stop for the second spring end 145.

According to this embodiment, the fusion welding element 140 has a fusion welding connection 155 on at least one end which is fusion welded to copper wires which are accommodated in the coil body 110 or which are arranged on the coil body 110.

According to one embodiment, the circuit board 105 and/or the coil body 110 in one of the variants described above are part of the contact arrangement 100.

In the following, in other words, the details of the contact arrangement 100 already described are described again:

the contact arrangement 100 proposed here realizes an electrical contact system or contact support system for a solenoid valve. According to this embodiment the contact device 100 is formed for use with a solenoid valve of a brake device of a truck or lorry. The contact arrangement 100 can advantageously provide a low-cost contact system which, when supplied with electrical power, electrically connects the circuit board 105 to one or more electromagnetic coils of the coil former 110. The assembly of the contact arrangement 100 can be carried out in a simple manner. Due to the contact arrangement 100, no additional housing elements or special guide or support elements are required on or in the region of the circuit board 105. The fusion welding element 140 advantageously enables a welding process which enables a more stable connection compared to a soldering process, since the parts to be welded liquefy during welding due to the very high temperatures and subsequently form a more secure, cohesive connection than in the case of soldering. Compared to the possible soldering of the coil on the winding area wound around the electrically conductive pin, a more stable connection is obtained by the contact arrangement 100 proposed here, since the contact spring 115 is only flexibly clamped between the circuit board 105 and the fusion-welding element 140 according to one embodiment. According to an alternative embodiment, the second spring end 125 is welded with the welding element 140, which ensures a very secure connection.

The elastic contact device 100 is advantageously designed to compensate for dimensional deviations, for example dimensional deviations. This is helpful because if at least one electrical pin is used, a relatively high position control or orientation adjustment is required. Here, the step 135 and/or the stepped contact spring 115 meet the structural requirements and advantageously enable a reduced space requirement. The contact spring 115 is advantageously guided by a pin 120 which also isolates the contact spring 115 from the housing. According to this embodiment, the pin 120 guides and supports the contact spring 115 in the axial direction and in the lateral or radial direction. Due to the contact arrangement 100, the required pretensioning force between the circuit board 105 and the coil body 110 is also ensured.

According to this embodiment, the stepped contact spring 115 is pressed or tensioned against the circuit board 105 and the fusion-welding element 140, which is fixed on or in the coil body 110. According to this embodiment, the fusion welding element 140 is formed as a fusion welding sleeve. A pin 120 having a plastic material axially and laterally supports the contact spring 115. Here, the pin 120 is formed in the form of a guide pin so as to support the contact spring 115 from the inside. Since the contact spring 115 has a step, the pin 120 is pressed against the step, thereby causing a sufficient required force to act on the fusion melting element 140 and the circuit board 105. The pins 120 arranged in the contact springs 115 advantageously require less structural material than a possible outer guide housing surrounding the contact springs 115. Such an outer housing is not necessary. Nor are guide rails at or on the circuit board 115 necessary. In summary, the contact arrangement 100 proposed here can be produced simply and inexpensively and can be assembled easily. In this case, the contact arrangement 100 advantageously requires only very few components and can nevertheless compensate for dimensional deviations. Because the contact spring 115 is held by the pin 120, no special structure or auxiliary means is required for transportation. Advantageously, the contact device 100 is manufactured without the need for a brazing process.

Fig. 2 shows a flowchart of a method 200 for producing a contact arrangement for electrically contacting a circuit board with a coil former of a solenoid valve for a vehicle brake system, according to one exemplary embodiment. One of the variants of the contact arrangement described in fig. 1 can be mentioned here.

The method 200 includes a providing step 205 and an accommodating step 210. Optionally, according to this embodiment, the method 200 further comprises an electrical contacting step 215.

In a provision step 205, a helical electrically conductive contact spring which is formed in contact or contactable with the circuit board at a first spring end and in contact or contactable with the coil body at a second spring end opposite the first spring end is provided, so that the circuit board can be brought into spring-like electrical contact with the coil body, and a pin which can be accommodated in an inner space of the contact spring, wherein the pin is formed for supporting the contact spring from the inner space in an accommodated state accommodated in the inner space. In an accommodation step 210, a pin is accommodated into an inner space of the contact spring. In the accommodation step 210, a pin is inserted into the inner space according to this embodiment, or a contact spring is pulled onto the pin according to an alternative embodiment.

The method 200 further includes an electrical contacting step 215 in which the first spring end is in electrical contact with the circuit board and/or the second spring end is in electrical contact with the coil body. The electrical contacting step 215 is performed after the accommodating step 210 according to this embodiment, or before the accommodating step 210 according to an alternative embodiment.

The method steps set forth herein may be repeated and may be performed in an order other than the order described.

List of reference numerals

100 contact device

105 circuit board

110 coil body

115 contact spring

120 pin

122 first spring end

125 second spring end

130 inner space

135 steps

140 fusion welding element

145 hollow

150 side concave

155 fusion welded connection

200 method for producing a contact arrangement

205 providing step

210 accommodating step

215 electrical contacting.