Attachment device for electromagnetic assembly, electromagnetic assembly and valve

Abstract

The invention relates to an attachment device (1) for an electromagnetic assembly (2), comprising a housing part (3) which is hollow cylindrical at least in sections and which has an undercut region (4) extending at least in part of the circumferential region on the inner circumferential side, and a substantially pot-shaped latching part (5) with an attachment cable (6), the latching part (5) can be inserted into the housing part (3) and has a latching element (7) arranged on the outer periphery, which latching element engages in a latching manner in the undercut region (4) of the housing part (3) when the latching part (5) is inserted into the housing part (3). The present application also relates to an electromagnetic assembly (2) having an attachment device (1) of the present application and a valve having an electromagnetic assembly (2) of the present application.

Description

Technical Field

[0001] The present application relates to an attachment device for an electromagnetic assembly. A preferred application area of the present application is a valve actuated by an electromagnetic assembly, in particular a pneumatic valve. Accordingly, the present application also relates to an electromagnetic assembly having the attachment device of the present application, and to a valve, in particular a pneumatic valve, having the electromagnetic assembly of the present application. Background Art

[0002] An electromagnetic assembly for actuating a valve generally has an electromagnetic coil for acting on a reciprocating electromagnetic armature, which is part of the valve. The electromagnetic armature itself can form a valve closing element or be coupled to a valve closing element, such that the valve can be opened and closed via the reciprocating movement of the electromagnetic armature. Depending on whether the valve is configured to be closed when de-energized or opened when de-energized, the magnetic force of the electromagnetic coil acts on the electromagnetic armature in the opening direction or in the closing direction. In the corresponding other direction, the electromagnetic armature is loaded by the spring force of a spring, which thus counteracts the magnetic force of the electromagnetic coil.

[0003] The magnetic force is generated by energizing the electromagnetic coil. The prerequisite is that the electromagnetic coil is attached to a current supply. This attachment is usually achieved via two contact elements, which extend outwards through the housing of the electromagnetic assembly receiving the electromagnetic coil and are connected to an attachment cable at the end sides. In order to fix the attachment cable, the connection area is then poured with a curable casting material. However, pouring is time-consuming and thus increases the production cost. In addition, shrinkage of the casting material occurs during hardening, causing it to detach from the housing of the electromagnetic assembly. In some cases, a permanent fixation of the attachment cable cannot be ensured here. Summary of the Invention

[0004] The task of the present application is to simplify the electrical attachment of the electromagnetic coil of the electromagnetic assembly. In particular, pouring in the attachment area should be eliminated.

[0005] This task is solved by the attachment device of the present application. The present application also proposes advantageous expansions. In addition, to solve this task, an electromagnetic assembly having the attachment device of the present application and a valve having the electromagnetic assembly of the present application are provided.

[0006] There is proposed an attachment device for an electromagnetic assembly, comprising:

[0007] - a housing part that is at least sectionally hollow cylindrical and has a recessed area extending at least in a partial circumferential area on its inner circumferential side, and

[0008] substantially pot-shaped a latching component with an attached cable, wherein the latching component can be inserted into the housing component and has latching elements arranged on the outer peripheral side, and when the latching component is inserted into the housing component, these latching elements are latched into the side recessed area of the housing component.

[0009] In the proposed attachment device, the attached cable is positioned and fixed in the hollow cylindrical housing component by means of the latching component. Herein, the positioning and fixing are caused by the latching connection between the latching component and the housing component. On the one hand, the latching connection should be easy to establish and on the other hand, it reliably holds the attached cable in position even without subsequent casting. Thus, casting can be dispensed with, thereby reducing production costs.

[0010] In order to establish the latching connection, the outer diameter of the latching component in the area of the latching elements is greater than the inner diameter of the insertion opening of the housing component. Herein, when the latching component is inserted into the housing component, these latching elements are constricted or pressed inwards in the area of the insertion opening until they reach the side recessed area and the latching elements snap outwards again, wherein the latching elements are latched into the side recessed area. For this purpose, the latching elements of the latching component are configured as spring arms that can be elastically deformed slightly.

[0011] According to a preferred embodiment of the present application, in order to form the latching elements, the latching component has a slit extending radially from the outside inwards. These latching elements are separated via the slit.

[0012] Furthermore preferably, these latching elements are splayed outwards such that they together form an insertion cone. This insertion cone enables the insertion of the latching component into the housing component to be simplified.

[0013] Furthermore preferably, the latching component has a centrally arranged base, a first end of each of the attached cables extends axially from the base and a second end of each of the attached cables extends radially from the base. The turning of the attached cable in the base causes a reduction in tension. In addition, the ends of the attached cable can be suitably positioned via the turning such that they can be easily connected to the contact elements of the electromagnetic assembly. Electrical attachment of the electromagnetic assembly generally requires two attached cables. Especially in the case of two attached cables, preferably, the ends of the two attached cables extending axially from the base extend in parallel and the ends extending radially are arranged along a common axis. The two ends extending radially are thus arranged on opposite sides of the base. In this arrangement, these ends can easily form contacts with the contact elements of the electromagnetic assembly.

[0014] Advantageously, the attached cable is connected to the locking component in a material-locking, force-locking and / or form-locking manner. Material locking can be achieved in particular by the following method: when the locking component is manufactured by an injection molding method, the attached cable is placed into the mold together and encapsulated by injection molding. The material locking fixes the attached cable in the locking component. At the same time, the tensile force of the attached cable is reduced. Force locking and / or form locking can be achieved in particular by means of a locking component implemented in multiple parts.

[0015] Therefore, in an expansion solution of this application, it is proposed that the clamping component is placed, in particular pressed, into the base of the locking component, and the attached cable is clamped between the base and the clamping component. Here, the force locking between the locking component and the attached cable is achieved via the clamping component.

[0016] Supplementary, it is proposed that the attached cable is received in a cable guide, which is configured in the base and / or in the clamping component. The attached cable can be precisely positioned via the cable guide. In addition, when the clamping component is placed, in particular pressed, the attached cable does not slip. Preferably, clamping ribs (Klemmstege) extending transversely to the attached cable and arranged offset from each other are configured in the cable guide. With the clamping ribs, in addition to the force locking, a form locking is achieved, which results in a reduction of the tensile force of the attached cable. Because when the attached cable is clamped between the base and the clamping component, the clamping ribs are imprinted into the insulation of the attached cable.

[0017] It is also proposed that the locking component preferably has a centrally arranged centering tenon in the region of the base or in the region of the clamping component placed, in particular pressed, into the base. Via the centering tenon, the locking component can be centered when placed into the housing component. However, the prerequisite for this is that the housing component or the electromagnetic component connected to the housing component has a correspondingly configured notch for receiving the centering tenon.

[0018] Alternatively or supplementary, it is proposed that the locking component has at least one guiding tenon arranged eccentrically. Via the at least one guiding tenon, the non-relative rotation of the locking component relative to the housing component or relative to the electromagnetic component connected to the housing component can be achieved. The prerequisite for this also lies in that the housing component or the electromagnetic component connected to the housing component has at least one correspondingly configured notch for receiving the at least one guiding tenon.

[0019] It is also proposed that the latching member has at least two engagement openings which are eccentrically arranged for the pressing tool. The pressing tool makes it easier to insert the latching member into the housing member, in particular simplifies the orientation or angular position of the latching member with respect to the housing member. The prerequisite is that the housing member or the electromagnetic assembly connected to the housing member has at least two identical engagement openings for receiving the pressing tool. The pressing tool can for example have at least two guide pins which are first inserted into the eccentrically arranged engagement openings of the latching member. Then the pressing tool is rotated until the guide pins can engage with the engagement openings of the housing member or the electromagnetic assembly. If the correct angular position is found, the latching member can be pressed into the housing member with the aid of the pressing tool. The guide pins of the pressing tool are preferably spring-loaded for this purpose, so that the guide pins can retract into the pressing tool when the latching member is pressed in. The latching member is pressed into the housing member with the aid of the pressing tool so far that the latching element latches into the lateral recessed area of the housing member.

[0020] In a preferred embodiment of the present application, the latching member has substantially sector-shaped cutouts on opposite sides for exposing the attached cable, preferably for exposing the end of the attached cable which projects radially from the base. The sector-shaped cutouts enable the attached cable to come into contact with the contact elements of the electromagnetic assembly when the latching member is inserted into the housing member.

[0021] Furthermore, an electromagnetic assembly for a valve, in particular a gas valve, is proposed. The electromagnetic assembly includes an electromagnetic coil and the attachment device of the present application for attaching the electromagnetic coil to a current supply. Here, the electromagnetic coil is received in a housing member which is constructed integrally with the housing member of the attachment device or is connected to the housing member of the attachment device. The connection can for example be a threaded connection or a press connection.

[0022] The attachment device of the present application enables the electrical attachment of the electromagnetic coil of the electromagnetic assembly to be simplified. In particular, the post-casting of the attachment area can be dispensed with. Thus, the assembly process is cleaner and at the same time faster and less costly.

[0023] Preferably, the housing member of the electromagnetic assembly has contact elements which project on its end side for conductive connection to the attached cable of the attachment device. The contact elements can for example be implemented as needles, pins or tabs. As such, the contact elements have a certain shape strength which makes it easier to come into contact with the attached cable when the latching member is inserted into the housing member. For further simplification, it is proposed that the contact elements for receiving the attached cable are constructed in a fork shape on the end side. The attached cable can thus be inserted into the fork-shaped ends of the contact elements and then be connected to the contact elements in a material-locking manner, in particular by welding or soldering, for fixing.

[0024] Furthermore, the housing part preferably has an end face in which there is formed:

[0025] - a notch for receiving a centering tenon of the latching part; and / or

[0026] - at least one notch for receiving at least one guiding tenon of the latching part; and / or

[0027] - at least two engaging openings for a pressing tool that can coincide with the engaging openings of the latching part.

[0028] The notch for receiving the centering tenon enables the centering of the latching part to be simplified when inserted into the housing part. If the housing part is not integrally formed with the housing part of the electromagnetic assembly, it is previously connected to the electromagnetic assembly. The at least one notch for receiving the at least one guiding tenon is for the non-relative rotation of the latching part within the housing part after insertion. The engaging openings are for the correct positioning of the latching part when inserted into the housing part, especially with respect to its angular orientation. Thus, only in the case of the correct angular orientation can the radially extending end of the attached cable come into contact with the contact element of the electromagnetic assembly. In this regard, the correct angular orientation is permanently ensured by the non-relative rotation achieved, for example, by means of the at least one guiding tenon.

[0029] Since the preferred application field of the present application is an electromagnetically controllable valve, a valve, in particular a pneumatic valve, having the electromagnetic assembly of the present application is also proposed. Description of the Drawings

[0030] The preferred embodiments of the present application are explained in detail later with reference to the drawings. The drawings show:

[0031] Figure 1 A perspective view of a latching part with an attached cable showing a first preferred embodiment of the attachment device of the present application,

[0032] Figure 2 Showing Figure 1 A top view of the latching part after being inserted into the housing part of the attachment device,

[0033] Figure 3 Showing the Figure 1 Latching part inserted into the housing part, where the housing part is arranged on the electromagnetic assembly,

[0034] Figure 4 Showing the Figure 1 Latching part inserted into the housing part in a sectional view,

[0035] Figure 5 a) Showing Figure 1 A longitudinal sectional view of the attachment device and the electromagnetic assembly connected to the attachment device,Figure 5 b) shows Figure 5 an enlarged partial view of a),

[0036] Figure 6 showing a perspective view of the latching member of the second preferred embodiment of the attachment device of the present application,

[0037] Figure 7 showing the Figure 6 perspective view of the attachment cable to be connected to the latching member,

[0038] Figure 8 showing the Figure 6 perspective view of the clamping member to be connected to the latching member,

[0039] Figure 9 showing a perspective view of the latching member after inserting the attachment cable and the clamping member as seen from above,

[0040] Figure 10 showing a perspective view of the latching member after inserting the attachment cable and the clamping member as seen from below,

[0041] Figure 11 a) shows a bottom view of the latching member together with the attachment cable and the clamping member and Figure 11 b) shows a longitudinal sectional view of the latching member together with the attachment cable and the clamping member,

[0042] Figure 12 showing a perspective view of the latching member together with the attachment cable and the clamping member before being inserted into the Figure 6 housing member of the attachment device,

[0043] Figure 13 showing a perspective view of the latching member together with the attachment cable and the clamping member and the pressing tool for inserting the latching member into the housing member of the attachment device,

[0044] Figure 14 showing a perspective view of the latching member together with the attachment cable and the clamping member on the pressing tool before being inserted into the housing member of the attachment device,

[0045] Figure 15 showing Figure 6 a perspective view of the assembled attachment device,

[0046] Figure 16 showing a longitudinal sectional view of the pressing tool and the attachment device during assembly,

[0047] Figure 17 showing a longitudinal sectional view of the assembled attachment device. Detailed implementation mode

[0048] According toFigures 1 to 5 Describe a first preferred embodiment of the attachment device 1 for the electromagnetic component 2 of the present application. With the aid of the attachment device 1, the electromagnetic coil 17 of the electromagnetic component 2 can be electrically contacted and attached to a current supply.

[0049] Figures 1 to 5 The attachment device 1 shown in has a housing part 3 (see Figure 2 ) and a locking part 5. The housing part 3 is basically implemented as a hollow cylinder and has a side recessed area 4 on the inner peripheral side that extends at least through a partial circumferential area (see Figure 4 and Figure 5 a) and Figure 5 b)). The locking part 5 is basically implemented as a pot shape and has two sector-shaped cutouts 16 on the outer peripheral side on opposite sides. The remaining outer peripheral area forms locking elements 7, which are separated by a gap 24 extending radially from the outside to the inside. In addition, the locking elements 7 flare slightly outward at their free ends, such that they form a lead-in cone when the locking part 5 is inserted into the housing part 3. When the locking part 5 is inserted, the locking elements 7 engage with the side recessed area 4 of the housing part 3 (see Figure 5 b)).

[0050] Integrated in the locking part 5, and more precisely in the centrally arranged base 8 of the locking part 5, are two attachment cables 6. Each of them has an end 6.1 extending axially from the base 8 and an end extending radially from the base 8. Thus, the attachment cables 6 are turned in the base 8. Contact with the contact element 19 of the electromagnetic component 2 is established via the end 6.2 extending radially from the base 8. The contact element 19 is implemented in a fork shape on the end side, such that it can receive the end 6.2 of the attachment cable 6 (see Figure 2 and Figure 3 ). This is possible because the end 6.2 is exposed through the sector-shaped cutout 16 of the locking part 5 (see Figure 1 and Figure 2 ). The attachment cables 6 are connected to the locking part 5 in a material-locking manner, for example, by being injection-molded and encapsulated with the material of the locking part 5. In this case, the locking part 5 is an injection molding. When manufacturing the locking part 5, the attachment cables 6 are placed into the mold together.

[0051] Before inserting the locking part 5 into the housing part 3, first connect the housing part 3 to the housing part 18 of the electromagnetic component 2, in which the electromagnetic coil 17 is received (see Figure 5 a)). The contact element 19 for contacting the electromagnetic coil 17 extends through the housing part 18 (in Figure 5(not shown in the figure). The connection between the housing part 3 and the housing part 18 of the electromagnetic component 2 can be, in particular, a threaded connection or a press connection. Alternatively, the two housing parts 3, 18 can also be integrally formed, as shown, for example, in another embodiment of the attachment device 1 of the present application, which will be explained in detail later Figures 6 to 17 Detailed explanation.

[0052] The attachment device 1 of the present application in Figures 6 to 17 The other embodiment shown in also has a locking part 5 (see Figure 6 ) and an attachment cable 6 (see Figure 7 ). However, the attachment cable 6 is not integrated into the locking part 5 and is not materially locked to the locking part 5, but can be pre-assembled and inserted into the locking part 5 from below. For precise positioning of the attachment cable 6, the locking part 5 has a downwardly open cable guide 9 in the region of the base 8. By inserting, in particular pressing, the clamping part 10 into the base 8 of the locking part 5, the attachment cable 6 can be fixed (see Figure 9 and Figure 10 ). The clamping part 10 also has a cable guide 9. The clamping ribs 11 (see Figure 8 ) extend transversely to the cable guide 9. When the clamping part 10 is pressed into the base 8 of the locking part 5, the clamping ribs are imprinted into the insulation of the attachment cable 6. Additional clamping ribs 11 are provided in the cable guide 9 of the base 8. They are arranged offset with respect to the clamping ribs 11 of the clamping part 10 such that the attachment cable 6 is fixed via the clamping ribs 11 and the tensile force is relieved (see Figure 11 b)).

[0053] For pressing into the base 8 of the locking part 5, the clamping part 10 has an extrusion interference. This is currently established by a lateral material thickening 25. In addition, the clamping part 10 has a recess 26 into which the rib 27 of the locking part 5 engages when the clamping part 10 is pressed into the base 8 of the locking part 5 (see Figure 11 b)). The clamping part 10 is thus connected to the locking part 5 not only by force fit but also by form fit.

[0054] After the attachment cable 6 and the clamping part 10 are inserted into the locking part 5, the locking part 5 can be inserted into the housing part 3 of the attachment device 1 or into the housing part 18 of the electromagnetic component 2 that is integrally formed with the housing part 3 (see Figure 12 ). Here, precise positioning of the locking part 5 with respect to the housing part 3 or the housing part 18 is obtained. To simplify the positioning, the locking part 5 and / or the clamping part 10 have different aids. The first aid is a centering tenon 12, which is arranged on the bottom side of the clamping part 10 (see Figure 10 , Figure 11 a) andFigure 11 b)). The centering tenon 12 can form an engagement with a notch 21 constructed in a mating manner in the end face 20 of the housing part 18 of the electromagnetic component 2. As another auxiliary device, two eccentrically arranged guide tenons 13 are provided on the bottom side of the locking part 5 (see Figure 10 and Figure 11 a)), which are inserted into a matingly constructed notch 22 in the case of the correct angular orientation of the locking part 5 with respect to the electromagnetic component 2 (see Figure 12 ). In addition, the locking part 5 has two eccentrically arranged engagement openings 14 for the pressing tool 15 (see Figure 10 , Figure 11 a) and Figure 13 ). The pressing tool 15 has two guide pins 28, which can be inserted into the engagement openings 14 (see Figure 13 ). Corresponding engagement openings 23 are constructed in the housing part 18 of the electromagnetic component 2 (see Figure 14 ). When the locking part 5 is inserted into the housing part 3 or the housing part 18, the guide pins 28 of the pressing tool 15 find the engagement openings 23, so as to ensure that the locking part 5 is inserted into the housing part 3 or the housing part 18 in the correct angular orientation. In addition, this facilitates the insertion of the guide tenons 13 into the correspondingly provided notches 22 in the housing part 18. After insertion, after the pressing tool 15 is removed again, the guide tenons 13 are formed to be non-rotatable relative to each other.

[0055] In particular, it can be seen from Figure 15 that the angular orientation of the locking part 5 with respect to the housing part 3 or the housing part 18 has special significance, because only in the case of the correct angular orientation, the end 6.2 of the attached cable 6 will be inserted into the fork-shaped end of the contact element 19. If this is achieved, the end 6.2 can be welded or brazed to the contact element 19 to fix the contact. Pouring is no longer required.

[0056] After the locking part 5 is inserted into the housing part 3 or the housing part 18, a pressure F is applied to the locking part 5 by means of the pressing tool 15 (see Figure 17 ). According to a preferred embodiment of the present application, the locking part 5 is over-pressed (überdrückt) here. As exemplarily shown in Figure 16 and Figure 17 , the base 8 of the locking part 5 can form a boss 29 on its bottom side, which abuts against the end face 20 of the housing part 18 of the electromagnetic component 2 during insertion. The boss 29 has a height h (see Figure 17 ). Due to a certain elasticity of the locking part 5, it can be over-pressed by means of the pressing tool 15 here, and the pressing tool supports on the locking part 5 outside the boss 29 for this purpose (see Figure 16(the enclosed area in). This makes it easier for the latching element 7 to snap into the side recessed area 4 of the housing part 3. The maximum dimension x of the overpressure (see Figure 16 ) corresponds to the height h of the boss 29.

Claims

1. An attachment device (1) for an electromagnetic assembly (2), comprising: A housing part (3) which is hollow-cylindrical at least in sections and which has an undercut region (4) on the inner circumference and which extends over at least a partial circumferential region, and A roughly pot-shaped latching component (5) with an attached cable (6), wherein the latching component (5) can be inserted into the housing component (3) and has a latching element (7) arranged on the outer circumference, and when the latching component (5) is inserted into the housing component (3), the latching element latches into the undercut area (4) of the housing component (3).

2. The attachment device (1) according to claim 1, It is characterized in that The locking component (5) has a slit (24) extending radially from the outside to the inside, which is used to form the locking element (7).

3. The attachment device (1) according to claim 1 or 2, It is characterized in that The latching elements (7) are flared outwards so that they together form a kind of insertion cone.

4. Attachment device (1) according to any one of the preceding claims, It is characterized in that The locking component (5) has a centrally arranged base (8), and each first end of the attachment cable (6) extends axially from the base and each second end of the attachment cable (6) extends radially from the base, wherein, preferably, the ends extending axially extend in parallel and the ends extending radially are arranged along a common axis.

5. Attachment device (1) according to any one of the preceding claims, It is characterized in that The attachment cable (6) is connected to the latching element (5) in a materially locking, force-locking and / or form-locking manner.

6. The attachment device (1) according to claim 4 or 5, It is characterized in that A clamping part (10) is inserted, preferably pressed, into the base (8), and the attachment cable (6) is clamped between the base (8) and the clamping part (10).

7. The attachment device (1) according to claim 6, It is characterized in that The attachment cable (6) is received in a cable guide (9) constructed in the base (8) and / or in the clamping component (10), wherein preferably, clamping ridges (11) extending transversely to the attachment cable (6) and arranged staggered with respect to each other are constructed in the cable guide (9).

8. Attachment device (1) according to any one of the preceding claims, It is characterized in that The latching element (5) has a centrally arranged centering pin (12), preferably in the region of the base (8) or in the region of a clamping element (10) inserted, in particular pressed, into the base (8).

9. Attachment device (1) according to any one of the preceding claims, It is characterized in that The latching element (5) has at least one eccentrically arranged guide pin (13).

10. Attachment device (1) according to any one of the preceding claims, It is characterized in that The latching element (5) has at least two eccentrically arranged engagement openings (14) for a pressing tool (15).

11. Attachment device (1) according to any one of the preceding claims, It is characterized in that The locking component (5) has approximately fan-shaped cutouts (16) on two opposite sides for exposing the attachment cable (6), preferably for exposing the end of the attachment cable (6) extending radially from the base (8).

12. An electromagnetic assembly (2) for a valve, in particular a gas valve, comprising: an electromagnetic coil (17); and Attachment device (1) according to any of the preceding claims, for attaching the electromagnetic coil (17) to a current supply; The electromagnetic coil (17) is accommodated in a housing part (18) which is formed integrally with a housing part (3) of the attachment device (1) or is connected to the housing part (3) of the attachment device (1).

13. The electromagnetic assembly (2) according to claim 12, It is characterized in that The housing part (18) of the electromagnetic component (2) has a contact element (19) protruding at the end side for electrically conductive connection with the attachment cable (6) of the attachment device (1), wherein the contact element (19) is preferably constructed in a fork-shaped manner at the end side for receiving the attachment cable (6).

14. The electromagnetic assembly (2) according to claim 12 or 13, It is characterized in that The housing part (18) has an end face (20) in which: a notch (21) for receiving the centering tenon (12) of the locking component (5); and / or at least one notch (22) for receiving at least one guide tenon (13) of the locking member (5); and / or At least two engagement openings (23) for a pressing tool (15) that can overlap with the engagement openings (14) of the locking component (5).

15. A valve, in particular a gas valve, comprising an electromagnetic assembly (2) according to any one of claims 12 to 14.

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