JP2016211537A - Vacuum pump, and method of manufacturing vacuum pump - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily assemble a vacuum pump.SOLUTION: A vacuum pump has a housing 10, at least one function unit disposed in the housing 10, and at least one opposite unit 14 disposed outside of the housing 10. The opposite unit is electrically and/or information-technically connected to the function unit through at least one wire, here, the wire is penetrated through an opening portion 20 formed in a housing wall 18 and transited, and the opposite unit 14 is mounted outside of the housing wall 18 in an operating direction, and covers the opening portion 20. The opening portion 20 and the opposite unit 14 are fitted so that the opposite unit 14 can be penetrated and guided through the opening portion 20 in an assembling direction different from the operating direction with respect to their dimensions.SELECTED DRAWING: Figure 5

Description

  The present invention relates to a vacuum pump and a method for manufacturing a vacuum pump.

  An exemplary vacuum pump has a control unit for the motor and motor unit. The motor is disposed inside the housing of the vacuum pump. The control unit is provided on the housing from the outside. In doing so, the housing needs to be sealed to protect against the vacuum external region within the housing. On the other hand, at the same time, an electrical connection is necessary between the motor and the control unit.

  In the prior art, in an exemplary method for the manufacture of such a vacuum pump, a motor is provided in the housing. As a result, the wire is drawn from the motor through the opening in the housing, and the wire is electrically connected, for example soldered, with a connection unit for a control unit outside the housing. The connecting unit is then fixed to the housing from the outside.

  The disadvantage of this method is that the motor can only be fully tested after connection with the connection unit. The motor can only be tested after it has been installed in the vacuum pump housing.

US Patent Application Publication No. 2002 / 094277A1 European Patent Application Publication No. 1843043A2

  An object of the present invention is to simplify the assembly of a vacuum pump.

  The object is solved by a vacuum pump having the features of claim 1. This is particularly solved by the fact that the opening and the counter unit are aligned with each other so that, with respect to their dimensions, the counter unit can be guided through the opening in an assembly direction different from the operating direction.

  The advantage of the present invention resides in that the functional unit and the counter unit can be electrically and / or information-technically connected in the housing of the vacuum pump already before assembly of the functional unit. . The functional unit and the counter unit can thus be tested very early in the manufacturing process of the vacuum pump without first depending on other components. This allows for possible errors to be removed with low effort and cost. Secondly, the assembly itself is simplified and accelerated because the wires, for example thermal bonding, to the opposing unit can be omitted during the assembly process.

  In particular, the connection of the wires to the opposing unit can be formed in a suitable manner, already in production, or cast (vergossen). This is because the connection no longer needs to be released later when the vacuum pump is assembled. This has the advantage, in particular, that the connection can be reliably and reliably protected from external influences, thereby protecting it for a long time.

  The functional unit and the counter unit can thus be provided in common as a complete component of the vacuum pump. This opens up the collective availability of these components by a specialized manufacturer, who can carry out a complete test of the functional unit by himself. Moreover, the invention simplifies the disassembly and repair of the vacuum pump. This is because, in some cases, existing seals, for example in the form of O-rings or flat seals, can be easily replaced without separating the opposing unit from the line.

  This advantage is achieved according to the invention, in particular when the line is connected to the opposing unit without a connector connection. In this case, the corresponding parts can be omitted, while the assembly is further simplified.

  The functional unit can have a motor for the vacuum pump. Alternatively or additionally, the functional unit can include another device of a vacuum pump. This can be, for example, a measurement and monitoring device, a valve or other actuator for volume flow control in a vacuum pump.

  The electrical and / or information technology connection may have a means for energy (German) or information transfer. In this case, the means can include, for example, a conductor and / or an optical fiber.

  The opening can be different from a circle. In one embodiment, the opening has at least an essentially rectangular shape. The concept of shape relates to a basic shape that, in another embodiment of the invention, may differ from an ideal shape, such as a rectangular shape, for example by rounding or chamfering or additional notches.

  In another embodiment of the invention, the opposing unit has a maximum width, a maximum height and a length that runs perpendicular to the plane of the opening in assembly. At that time, the maximum width of the opposing unit is smaller than the width of the opening, and the maximum height of the opposing unit is smaller than the height of the opening. Here, the maximum width of the opposing unit is larger than the height of the opening, and the length of the opposing unit is larger than the width of the opening.

  Even in this embodiment, which is based on a relatively simple geometry, it is possible to ensure complete coverage of the opening by the opposing unit. The concepts of “height”, “width” and “length” simply relate to the extension and scale of the opening and the opposing unit in different directions (German: Ausdehungen). In particular, the concept of “height” is not limited to the vertical dimension / size direction, and also means, for example, the dimension / size in the horizontal direction. At that time, in such a case, the concept of “width” can mean expansion / scale in the vertical direction. “Height”, “width”, and “length” may be related to other arbitrary, for example, tilted dimensions and size directions.

  In assembly orientation, the maximum width and length of the opposing unit can be defined by a plate-shaped element. In other words, the opposing unit can have plate-like elements that are larger in width and length than the other components of the opposing unit as long as there are other components (in the opposing unit). The maximum height is in this case defined by the sum of the thickness of the plate-shaped element and the size / size of another component in the direction of the thickness.

  In one embodiment, the plate-shaped elements are at least essentially rectangular. The production of the counter unit is thereby simplified.

  The plate-shaped element can be a carrier plate. The carrier plate carries one or more components of the opposing unit. Other components can include, for example, relatively simple members, such as one or more connecting elements, or complex devices, such as a control unit for a functional unit. The components can be fixed to the carrier plate for a long period of time or unreleasably, respectively.

  In another embodiment, the carrier plate is formed as a conductor plate or substrate (or metal sheet, German) connected to (or by) the line. The conductor plate or the substrate is then formed for another line function and / or has another component, for example a computing unit or a control unit, and / or electrically It is possible to connect.

  The opposing unit may have at least one connection connector connected to the line (by the line). To this, another functional unit to be connected to the functional unit can be connected. As a result, the opposing unit can be formed relatively small. This is because the additional required components can be “outsourced” in some sense in another functional unit. Therefore, only a small opening is required in the housing wall, and only a relatively small counter unit needs to be guided through it. The structural space within the vacuum pump, which is often marginal, can thereby be better utilized. Another functional unit may be a power supply member for the control unit and / or functional unit, for example, for the motor, in the housing.

  The connection connector can be formed as a plug or jack, for example for a jack or plug of another functional unit. The connecting connector is provided on the outer surface in the operating direction of the opposing unit, and can be connected to the line (by the line) on the inner surface of the opposing unit. The connection connector can be combined with the conductor plate of the opposing unit. In this case, the connection connector can have at least one pin. This pin is guided through the conductor plate and soldered to the wire on the inner surface of the conductor plate. Alternatively or additionally, the connection connector can be attached to a surface that lies outside the conductor plate and is connected to the inner surface of the conductor plate by a conductor path, where It can be connected.

  In other embodiments, the opposing unit is screwed to the housing wall. This ensures a simple and releasable connection with the housing wall of the opposing unit.

  A seal can be provided between the opposing unit and the housing wall.

  In one embodiment, the housing wall and / or the opposing unit has a recess for receiving the seal. Within this recess, a seal, for example an O-ring, can be securely fixed and a defined compression is possible, for example, by screwing the opposing unit onto the housing wall. This is to achieve a necessary sealing action.

  The line can be flexible. The counter unit can thereby be guided through the opening in a particularly simple manner. In particular, the line includes one or more cables. Each of these can have one or more core wires.

  In one development, the line is irreversibly connected to the opposing unit. The wire is for example soldered and / or cast with the opposing unit. This improves connection stability and protection from external influences.

  The problem is further solved by a method for the manufacture of a vacuum pump according to claim 15. This can be further improved, for example, corresponding to the above-described embodiment of the device.

  Further embodiments are described in the dependent claims, the description and the drawings.

  The invention will now be described by way of example only with reference to the simplified drawings.

Illustration of the opposing unit and the functional unit according to the invention connected to it Side view of opposing unit Rear view of the opposing unit Figure 2 is a partial view of a housing according to the invention having an opening in the housing wall. View of the opposing unit guided through the opening in assembly Illustration of the opposing unit fixed to the housing wall in the working orientation The ratio of the size of the opposing unit 14 and the opening 20

  In FIG. 1, a functional unit 12 and a counter unit 14 (German: Gegeneinheit) are shown. These are connected via three lines (German: Leitungen). The functional unit 12 has, for example, a vacuum pump motor. The opposing unit 14 has a carrier plate 22 formed as a conductive plate. The carrier plate carries the connection connector 24. The connecting connector (German: Anchorverbinder) 24 is formed as a socket (German: Buchse) for a plug (German: Sticker) of another functional unit (such as a controller for a vacuum pump motor). ing. The three lines 16 are respectively connected to the contact points of the jack of the connection connector 24, and are assigned to, for example, each phase of electric drive of the motor.

  The carrier plate 22 has a rectangular shape, and its four corners are rounded for better handling of the opposing unit 14. In the vicinity of the corner, the carrier plate 22 has four through holes 28. Through these, each screw for fixing the opposing unit can be passed through.

  In FIG. 1, the opposing unit 14 is shown with its outer surface with respect to the working orientation. “Operating direction” means the arrangement of the opposing unit in a state in which this (opposing unit) is fixed to the housing wall 18 of the housing 10 as shown in FIG. 6. In other words, the concept of “operating orientation” relates to the orientation of the opposing unit relative to the housing 10 during operation of the vacuum pump. The inner surface shown in FIG. 1 of the carrier plate 22 is thus directed towards the interior of the housing 10 in the working orientation. On the other hand, the outer surface of the carrier plate 22 is directed away from the housing 10, as shown in FIG.

  FIG. 2 shows the opposing unit 14 as a side view. The connection connector 24 is fixed to the outer surface (here, the upper side) of the carrier plate 22. On the inner surface (here, the lower side) of the carrier plate 22, a plurality of lines 16 are emitted. These lines lead to functional units 12 not represented here. The connection connector 24 is electrically connected to the line 16 through the carrier plate 22.

  In FIG. 3, the inner surface of the carrier plate 22 of the opposing unit 14 is shown. Since the plurality of wires 16 are soldered to the pins of the connection connector 24 and the carrier plate 22 that are individually covered, the wires 16 and the connection connectors 24 are electrically connected to each other. And it is fixed to the carrier plate 22 for a long time.

  FIG. 4 shows a portion of the housing 10 of the vacuum pump. The housing 10 has a housing wall 18. In this, a rectangular opening 20 is formed. The opening is surrounded by a seal 26. The housing wall 18 has four screw holes 30 to fit the through holes 28 of the carrier plate 22. In these, a plurality of screws for fixing the opposing unit 14 to the housing wall 18 can be screwed.

  In FIG. 5, it is shown how the opposing unit 14 can be passed through the opening 20 in the housing wall 18 of the housing 10 for assembly. The opposing unit 14 is then penetrated through the opening 22 from the side, along its longitudinal axis, perpendicular to the plane of extension of the opening 22, in particular through-shifting. (German: Hindu Gescheben wild).

  After the opposing unit 14 is completely penetrated through the opening 20, the opposing unit 14 is screwed to the housing wall with screws 32 in its operational orientation, as represented in FIG. In doing so, the inner surface of the carrier plate 22 covers the opening 20 and the seal 26 is engaged with the inner surface of the carrier plate 22, so that the seal efficiently moves inside the housing 10. Seal.

  6 and 7, the ratio of the size of the opposing unit 14 and the opening 20 is shown. This allows the opposing unit 14 to penetrate the opening 20 in the assembly direction, but cover the opening 20 in the operating direction. Therefore, FIG. 7 shows the opening 20 of FIG. 5 in an enlarged manner.

  The facing unit 14 has a length L. This length is defined by the distance between two short surfaces of the rectangular shape of the carrier plate 22. As can be seen from FIG. 7, the opposing unit 14 has a maximum width a defined by the spacing of both long sides of the rectangular shape of the carrier plate 22. The maximum height b of the opposing unit 14 is defined by all the extension / scales of the opposing unit 14 in the vertical direction, that is, the extension / scale including the connection connector 24, the carrier plate 22 and the line 16. The width c of the opening 20 means the width of the rectangular opening in the horizontal direction, or in other words, the interval between the rectangular short surfaces of the opening 20. The interval between the long rectangular surfaces of the opening 20 defines the height of the opening 20.

  The maximum width a of the facing unit 14 is smaller than the width c of the opening 20, and the maximum height b of the facing unit 14 is smaller than the height d of the opening 20. However, the maximum width a of the opposing unit 14 is larger than the height of the opening 20, and the length l of the opposing unit 14 is larger than the width c of the opening 20. Therefore, as shown in FIG. 6, the facing unit 14 completely covers the opening 20.

  In the embodiment shown, the carrier plate 22 is arranged so that the opposing unit 14 has the opening 20 such that its extending plane is oriented essentially parallel to the long rectangular surface of the opening 20. Is guided through. For the facing unit 14 and the opening 20, not only other shapes such as an elliptical shape, a parallelogram shape, or an irregular shape can be considered. The opposing unit 14 can be made to penetrate the opening 20 in an assembly direction different from parallel. Therefore, the opposing unit 14 can be guided through the rectangular shape of the opening 20 in a diagonally and / or inclined manner, for example.

DESCRIPTION OF SYMBOLS 10 Housing 12 Functional unit 14 Opposing unit 16 Line 18 Housing wall 20 Opening part 22 Carrier plate 24 Connection connector 26 Seal 28 Through hole 30 Screw hole 32 Screw a Maximum width of opposing unit b Maximum height of opposing unit c Opening width d Opening height l Opposite unit length

Claims (15)

Housing (10),
At least one functional unit (12) provided in the housing (10) and at least one opposing unit (14) provided outside the housing (10), the opposing unit comprising at least one line Electrically and / or information-technically connected to the functional unit (12) via (16),
In doing so, the line (16) has passed through the opening (20) formed in the housing wall (18),
In this case, the opposing unit (14) is mounted outwardly on the housing wall (18) in the working orientation and covers the opening (20), and
In this case, the opening (20) and the opposing unit (14) are mutually connected so that the opposing unit (14) can be guided through the opening (20) in an assembly direction different from the operating direction with respect to its dimensions. A vacuum pump characterized by being combined. Device according to claim 1, characterized in that the opening (20) differs from a circular shape. Device according to claim 1 or 2, characterized in that the opening (20) has at least essentially a rectangular or square shape. The opposing unit (14) has a maximum width (a), a maximum height (b) and a length (l) that moves perpendicular to the plane of the opening (20) in the assembly direction;
At that time, the maximum width (a) of the opposing unit (14) is smaller than the width (c) of the opening (20), and the maximum height (b) of the opposing unit (14) is set to the opening (20). Less than the height (d) of
At that time, the maximum width (a) of the opposing unit (14) is larger than the height (d) of the opening (14), and
4. The device according to claim 1, wherein the length (l) of the opposing unit (14) is greater than the width (c) of the opening (20). 5. The assembly according to claim 1, wherein the maximum width (a) and length (l) of the opposing unit (14) is defined by a plate-shaped element (22) in assembly direction. The device described in 1. 6. Device according to claim 5, characterized in that the plate-shaped element (22) is at least essentially rectangular or square. Device according to claim 5 or 6, characterized in that the plate-shaped element is a carrier plate (22) carrying one or more other components of the opposing unit (14). 8. Device according to claim 7, characterized in that the carrier plate (22) is formed as a conductor plate or as a base connected to the line (16). The opposing unit (14) has at least one connection connector (24) connected to the line (16), and another functional unit connected to the functional unit (12) can be connected to the connection connector. A device according to any one of the preceding claims, characterized in that 10. A device according to any one of the preceding claims, characterized in that the counter unit (14) is screwed to the housing wall (18). 11. A device according to any one of the preceding claims, characterized in that a seal (26) is provided between the opposing unit (14) and the housing wall (18). 12. Device according to claim 11, characterized in that the housing wall (18) and / or the counter unit (14) has a recess for receiving a seal (18). Device according to any one of the preceding claims, characterized in that the line (16) is flexible. 14. A device according to any one of the preceding claims, characterized in that the line (16) is irreversibly connected to the opposing unit (14). A method for the manufacture of a vacuum pump having a housing (10) and at least one functional unit (12) to be provided inside the housing (10), wherein the housing (10 ) From outside the electrical and / or information technology connection, in which case the method comprises the following steps:
Prior to providing the functional unit (12) in the housing (10), the functional unit (12) is electrically and / or information-technically connected to the opposing unit (14) via at least one line (16). The
A functional unit (12) is provided in the housing (10), and an opposing unit (14) extends from the inside of the housing (10) through the opening (20) formed in the housing wall (18). Guided to the
A counter unit (14) is attached to the housing wall (18) in an operating direction from the outside, and the counter unit (14) covers the opening (20) in the operating direction.
The opening (20) and the opposing unit (14) are adapted with respect to their dimensions so that the opposing unit (14) can be guided through the opening (20) in an assembly orientation different from the operating orientation.
A method comprising the steps of:

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