Assembly aid element, assembly having assembly aid element, and method for assembling assembly

Abstract

The invention relates to a mounting aid (10) for a printed circuit board (1), comprising two components (14, 16) that can be connected in the direction of a longitudinal axis (12), the two components (14, 16) being connected to the printed circuit board (1) on opposite sides of the printed circuit board (1), the first component (14) having an insertion taper (26) for a press-fitting pin (2) that can be aligned with a press-fitting opening (3) of the printed circuit board (1), and the second component (16) having an insertion taper (26) for a press-fitting pin (2) that can be aligned with the insertion opening (3) of the printed circuit board (1). Wherein the second component (16), on the side thereof facing away from the first component (14), has a fastening section (38) for fastening the second component (16) to a housing element (8), in particular a housing element of a control unit, and wherein the second component (16), viewed in the direction of the longitudinal axis (12), has a support surface (46) at a distance from an end face (42) facing away from the first component (14), the support surface is used for limiting the movement of the second component (16) in the direction of the housing element (8).

Description

Technical Field

[0001] The present invention relates to an assembly auxiliary element for a circuit board, which can particularly conveniently and reliably position the circuit board in the housing of a controller, and at the same time provide a fitting auxiliary for press-fitting press-fit pins. The present invention also relates to an assembly including an assembly auxiliary element constructed according to the present invention and a circuit board connected thereto, and the present invention further relates to a method for manufacturing such an assembly. Background Art

[0002] In the context of the assembly of a controller, particularly in the context of connecting a socket with a plurality of press-fit pins to a circuit board, it is known to guide the press-fit pins with an auxiliary element made of plastic in order to position or guide them in the region of the press-fit openings of the circuit board. The auxiliary element radially surrounds the end region of the connector tab facing the circuit board, and thus serves as an insertion auxiliary or positioning auxiliary when the press-fit pins are press-fitted into the press-fit openings of the circuit board (DE 10 2019217862A1).

[0003] Furthermore, it is generally necessary to fasten or fix the circuit board in the housing of the controller. For this purpose, for example, fastening screws arranged in the corner regions of the circuit board can pass through through-openings in the circuit board, and thus the fastening screws can be screwed to the housing bottom of the housing, for example. Summary of the Invention

[0004] The assembly auxiliary element for a circuit board having the features of claim 1 according to the present invention has the advantage that it realizes the function of insertion assistance while connecting the press-fit pins to the circuit board, and on the other hand realizes the (rigid) fixation of the circuit board, particularly in the housing of the controller. In addition, the assembly auxiliary element can be assembled particularly conveniently, more precisely connected to the housing, and can be separated particularly conveniently.

[0005] In the context of the above description, the assembly auxiliary element for a circuit board having the features of claim 1 thus provides that the assembly auxiliary element has two members that can be connected to each other in the direction of the longitudinal axis of the assembly auxiliary element, wherein the two members are connected to the circuit board on opposite sides of the circuit board, wherein the first member has an insertion taper for the press-fit pins that can be aligned with the press-fit openings of the circuit board, wherein the second member has a fastening section for fastening the second member to a housing element, particularly a housing element of the controller, in the end region facing away from the first member, and wherein, when viewed in the direction of the longitudinal axis, the second member has a support surface at a certain distance from the end face facing away from the first member, and this support surface is used to limit the movement of the second member in the direction towards the housing element, and wherein the two members can preferably be connected to each other in the direction of the longitudinal axis by means of a clamping connection, and wherein the two members are preferably made of plastic and are constructed as injection molded parts.

[0006] Advantageous refinements of the assembly aid element for a circuit board according to the invention are listed in the dependent claims.

[0007] A preferred structural design of the assembly aid element provides that the connecting portion, preferably configured as a clamping connection between two members, has at least one fastening shaft section extending in the direction of the longitudinal axis on the first member or the second member, and this fastening shaft section fits into a corresponding receiving opening in the second member or the first member, wherein when the two members are in a state of being fitted in a plane extending perpendicular to the longitudinal axis, the two members are connected to each other in a non-rotatable manner relative to the longitudinal axis. This connection design between the two members in particular also enables the assembly aid element to be arranged in a defined manner relative to the circuit board and thus relative to the housing element.

[0008] Furthermore, it is preferred that the fastening section on the second member of the assembly aid element is configured in a pin shape and has at least one lead-in chamfer arranged in the region of the end face. This lead-in chamfer ensures that the assembly, which usually consists of a plurality of assembly aid elements and a circuit board, is centered relative to the housing element during the fitting process of the assembly aid element and the housing element, or ensures that tolerances resulting from manufacturing or assembly tolerances are compensated.

[0009] In a preferred refinement of the proposal put forward in the previous paragraph, it is proposed that the cross-section of the fastening section is configured in a cross shape and has a lead-in web, and this lead-in web preferably has deformable press-fit ribs on the outer side face away from the longitudinal axis. This design of the fastening section enables the fastening section to be deformed relatively conveniently or reduces the required press-fit force on the one hand, and enables the fastening section to be firmly arranged or received in the housing element by means of the press-fit ribs on the other hand.

[0010] In order to accurately position the second member of the assembly aid element relative to the circuit board and not interfere with the press-fitting process of the press-fit pins, furthermore, it is advantageous that the second member has a preferably blind-hole-shaped opening for the press-fit pins on the end face opposite to the fastening section, wherein this opening is aligned with the lead-in taper of the first member of the assembly aid element, and the end face is configured as a stop face arranged perpendicular to the longitudinal axis for abutting contact with the circuit board.

[0011] In order to simplify the manufacturing process when assembling a controller or a similar instrument and an assembly having an assembly aid element, furthermore, it is advantageous that the first member and / or the second member has a coding section (Codierung). Such a coding section can in particular be configured as a binary coding section by means of notches, recesses or protrusions on a plastic injection molding.

[0012] In addition, the present invention further includes a component, which has an assembly auxiliary element and a circuit board constructed according to the present invention as described so far. The circuit board has at least one through-opening, and the fastening shaft section of the first member or the second member passes through the through-opening. The fastening shaft section is arranged in the through-opening and has a movement clearance extending parallel to the plane of the circuit board. Especially when using a plurality of assembly auxiliary elements, this movement clearance can achieve tolerance compensation between the respective members, which makes the assembly of the component with the housing element easier.

[0013] A preferred improvement of the component proposes that the component further has a housing element, and the fastening section of the second member is press-fitted into the opening of the housing element.

[0014] In addition, the present invention further includes a method for assembling the component described so far. In the first assembly step, the assembly auxiliary element is connected to the circuit board, and in the second assembly step, the assembly auxiliary element is connected to the housing element by using the fastening section of the assembly auxiliary element.

[0015] Furthermore, preferably, after the component is assembled, a component having press-fit pins is press-fitted through the introduction taper of the assembly auxiliary element into the press-fit opening of the circuit board.

[0016] Further advantages, features and details of the present invention are obtained from the following description of the preferred embodiments of the present invention and according to the drawings. Description of the Drawings

[0017] Figure 1 A perspective view of a component composed of an assembly auxiliary element and a circuit board is shown;

[0018] Figure 2 A perspective view of the first member of the assembly auxiliary element is shown;

[0019] Figure 3 and Figure 4 A perspective view of the second member of the shown assembly auxiliary element is shown; and Figure 1 A partial cross-sectional view of the fitting state of the shown component in the housing of the controller is shown;

[0020] Figure 5 A perspective view of Figure 1 the shown component in the fitting state in the housing of the controller is shown;

[0021] In the drawings, the same elements or elements having the same functions are labeled with the same reference numerals. Detailed Description of the Preferred Embodiments

[0022] Figure 1 and Figure 5The assembly aid element 10 in the form of a circuit carrier in the form of a circuit board is shown in the assembled state on the circuit board 1. The assembly aid element 10 has two members 14, 16 which can be connected to one another along the longitudinal axis of the assembly aid element 10. These two members are made of plastic and are configured as injection-molded parts. The first member 14 is generally arranged substantially in the region of the upper side of the circuit board 1, while the second member 16 is located on the lower side of the circuit board 1.

[0023] Figure 2 The first member 14 shown separately in [ID] has an approximately oval, plate-shaped base body 17, and two fastening shaft sections 18 which are preferably molded equidistantly with respect to the longitudinal axis 12 project from the lower side of the base body 17 facing the circuit board 1. Each fastening shaft section 18 has a first section 19 with a slightly enlarged diameter, which has a smooth outer surface. On the side facing away from the base body 17, a second section 20 is connected to the first section, and this second section has a latching / serration shaft section 22 for forming a clamping connection 25 with the second member 16.

[0024] The first member 14 further has a through-opening configured as an insertion taper 26 which is aligned with the longitudinal axis 12 and whose diameter decreases in the direction of the circuit board 1 or in the direction of the fastening shaft section 18. The insertion taper 26 is used to guide the press-fit pin 2 shown only in [ID], where the press-fit pin 2 can be fitted into the conductive through-opening 3 of the circuit board 1 in a known manner by press-connection along a press-fit direction 4 extending perpendicular to the plane of the circuit board 1. Figure 5 As can also be seen from [ID] and [ID], the lower side of the base body 17 facing the circuit board 1 abuts flush or planar against the upper side of the circuit board 1, and the two fastening shaft sections 18 pass through the through-openings 6 formed in the circuit board 1, such that in the circuit board plane, a movement clearance is preferably formed between the through-opening 6 of the circuit board 1 and the outer diameter of the first section 19 of the fastening shaft section 18.

[0025] As according to Figure 1 and Figure 5 The second member 16 shown separately in [ID] and [ID] has a stop surface 30 on the side facing the circuit board 1 which extends perpendicular to the longitudinal axis 12, and in the state of being fitted to the circuit board 1, this stop surface abuts against the lower side of the circuit board 1. The stop surface 30, which is approximately rectangular by way of example, also has a blind-hole-shaped opening 32 which is aligned with the longitudinal axis 12 and which accommodates the section of the press-fit pin 2 protruding from the lower side of the circuit board 1 during the process of fitting the press-fit pin 2 to the circuit board 1. For this purpose, the diameter of the opening 32 is preferably at least as large as the diameter of the through-opening 3 in the circuit board 1.

[0026] The... of the assembly aid element 10 Figure 3 and Figure 4 The second member 16 shown separately in [ID] and [ID] has a stop surface 30 on the side facing the circuit board 1 which extends perpendicular to the longitudinal axis 12, and in the state of being fitted to the circuit board 1, this stop surface abuts against the lower side of the circuit board 1. The stop surface 30, which is approximately rectangular by way of example, also has a blind-hole-shaped opening 32 which is aligned with the longitudinal axis 12 and which accommodates the section of the press-fit pin 2 protruding from the lower side of the circuit board 1 during the process of fitting the press-fit pin 2 to the circuit board 1. For this purpose, the diameter of the opening 32 is preferably at least as large as the diameter of the through-opening 3 in the circuit board 1.

[0027] The second component 16 has, at a distance from the stop face 30 in the direction of the longitudinal axis 12, a receiving opening 34 configured to be aligned with the fastening shaft section 18, which receiving opening receives at least a second section 20 of the fastening shaft section 18 when forming the clamping connection 25 and forms the clamping connection 25 therewith.

[0028] Since the assembly aid 10 has two fastening shaft sections 18 and corresponding through holes in the circuit board 1, the assembly aid 10 is connected to the circuit board 1 in a state of being engaged with the circuit board 1 in a non-rotatable manner relative to the longitudinal axis 12.

[0029] The second component 16 further has an intermediate section 36 with an approximately rectangular cross-section, which intermediate section transitions to a fastening section 38 on the side facing away from the first component 14. As can be seen particularly clearly from Figure 4 The fastening section 38 has a cross-section in the shape of a cross, which cross-section has an insertion web 39, and on the outer side of this insertion web there are deformable press-fit fins 40. In the region of the insertion web 39, the fastening section 38 also has an insertion bevel 44 arranged in the region of its end face 42. In the transition region between the fastening section 38 and the intermediate section 36, the lower side of the intermediate section 36 facing the fastening section 38 also has a support surface 46, which support surface forms an axial stop with the housing bottom of the housing element 8, such as the housing of a controller, which can only be seen in Figure 5 Furthermore, the housing element 8 has an opening 9, for example in the form of a blind hole, which forms a press-fit connection with the second component 16 when the fastening section 38 of the second component 16 is press-fitted.

[0030] Finally, the second component 16 has a coding section 48, for example just below the stop face 30, which coding section is in the form of a plurality of binary elements configured as protrusions or recesses.

[0031] In order to form Figure 1 the assembly 100 shown, which assembly consists of at least one assembly aid 10 (but usually a plurality of assembly aids 10) and the circuit board 1, in a first assembly step, the assembly aid 10 is connected to the circuit board 1 such that the first component 14 passes through the through opening 4 of the circuit board 1 with its fastening shaft section 18 until the first component abuts against the upper side of the circuit board 1 with its base body 17. Then, by engaging with the second component 16 in the direction of the longitudinal axis 12, a clamping connection 25 is formed between the two components 14, 16. Subsequently, as shown in Figure 5 either the press-fit pins 2 are passed through the insertion taper 26 and press-fitted into the through opening 3 for electrical connection to the circuit board 1, or the assembly aid 10 is connected to the housing element 8 by press-fitting the fastening section 38 into the opening 9, thereby using the corresponding fastening section 38.

[0032] The assembly aid element 10 or the assembly 100 described thus far can be modified in many different ways without departing from the concept of the invention. For example, if it is only necessary to engage two components 14, 16 of the assembly aid element 10 with each other in the direction of the longitudinal axis 12, in principle only one fastening shaft section 18 can be provided. In addition, if the component to be connected to the circuit board 1, for example, has a plurality of press-fit pins 2 arranged at a small distance from each other, it can also be proposed to provide not only one insertion taper 26 on the first component 14, but, for example, a plurality of such insertion tapers 26. It is also possible to integrally construct the second component 16 with the housing element 8.

Claims

1. An assembly aid component (10) for a circuit board (1), the assembly aid component having two components (14, 16) that can be connected in the direction of a longitudinal axis (12), wherein, The two components (14, 16) are connected to the circuit board (1) on opposite sides of the circuit board (1), wherein the first component (14) has a guiding taper (26) for press-fitting pins (2) that can be aligned with the press-fitting openings (3) of the circuit board (1), wherein the second component (16) has a fastening section (38) on the side facing away from the first component (14) for fastening the second component (16) to a housing element (8), in particular a housing element of a controller, wherein, when viewed in the direction of the longitudinal axis (12), the second component (16) has a support surface (46) at a distance from the end face (42) facing away from the first component (14), the support surface being used to limit the movement of the second component (16) in the direction towards the housing element (8), wherein the two components (14, 16) can preferably be connected to each other in the direction of the longitudinal axis (12) by means of a clamping connection (25), and wherein the two components (14, 16) are preferably made of plastic and are configured as injection moldings.

2. The assembly aid element according to claim 1, characterized in that a connection, preferably configured as a clamping connection (25), between the two components (14, 16) has at least one fastening shaft section (18) extending in the direction of the longitudinal axis (12) on the first component (14) or the second component (16), the fastening shaft section being fitted into a corresponding receiving opening (34) of the second component (16) or the first component (14), wherein, in the fitted state, the two components (14, 16) are connected to each other in a non-rotatable manner relative to the longitudinal axis (12).

3. The assembly aid element according to claim 1 or 2, characterized in that the fastening section (38) is configured in a pin-shaped manner and is provided with at least one guiding bevel (44) arranged in the region of the end face (42).

4. The assembly aid element according to claim 3, characterized in that the cross-section of the fastening section (38) is configured in a cross shape and has a guiding web (39), and the guiding web (39) preferably has deformable press-fitting ribs (40) on the outer side facing away from the longitudinal axis (12).

5. The assembly aid element according to any one of claims 1 to 4, characterized in that the second component (16) has a preferably blind-hole-shaped opening (32) for press-fitting pins (2) on the end face facing away from the fastening section (38), wherein the opening (32) is aligned with the guiding taper (26) of the first component (14), and the end face is configured as a stop surface (30) arranged perpendicular to the longitudinal axis (12) for abutting contact with the circuit board (1).

6. The assembly aid element according to any one of claims 1 to 5, characterized in that the first component (14) and / or the second component (16) has a coding section (48).

7. A component (100) having at least one assembly aid element (10) configured according to any one of claims 2 to 6 and a circuit board (1), wherein, The circuit board (1) has at least one through-opening (6), through which the fastening shaft section (18) of the first member (14) or the second member (16) passes, and wherein the fastening shaft section (18) is arranged in the through-opening (6) in such a way that a movement clearance is formed in the circuit board plane.

8. The assembly according to claim 7, characterized in that the assembly (100) further has a housing element (8), wherein the fastening section (38) of the second member (16) is press-fitted into an opening (9) of the housing element (8).

9. A method for assembling the assembly according to claim 7 or 8, characterized in that in a first assembly step, at least one assembly auxiliary element (10) is connected to the circuit board (1), and in a second assembly step, the assembly auxiliary element is connected to the housing element (8) by means of the fastening section (38) of the assembly auxiliary element (10).

10. The method according to claim 9, characterized in that after assembling the assembly (100), a component having press-fit pins (2) is press-fitted through the lead-in taper (26) of the assembly auxiliary element (10) into the through-opening (3) of the circuit board (1).

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