Electric motor having a connection arrangement and lift system having an electric motor

Abstract

The invention relates to an electric motor (1) for generating a torque, comprising: a motor housing (2), and one or more motor components (4.1, 4.2) arranged in the motor housing (2) having a plurality of first conductors (9.1, …, 9.4) connected thereto, wherein at least one first wall (2.1) of the motor housing (2) has at least one opening (5.1, 5.2), wherein at least one through terminal (6.1, …, 6.6) is arranged in the at least one opening (5.1, 5.2), such that a first connection (8.1) for connecting a first conductor (9.1, …, 9.4) is arranged inside and a second connection (8.2) for connecting a second conductor (10), which is conductively connected to the first connection (8.1), is arranged outside the motor housing (2) and wherein each first conductor (9.1, …, 9.4) is connected to a separate through terminal (6.1, …, 6.6) arranged in an opening (5.1, 5.2). The invention further relates to a lift system (20) having such an electric motor (1) as a drive.

Description

[0001] Electric motor with connection arrangement and elevator system with electric motor

[0002] Technical area

[0003] The following statements relate to an electric motor for generating a torque, in particular for driving a car of an elevator system, the electric motor comprising a motor housing and one or more motor components arranged in the motor housing with a plurality of first conductors connected thereto.

[0004] Furthermore, the following statements relate to an elevator system with such an electric motor.

[0005] Technical background

[0006] Electric motors are widely known in the art and are used to generate torque in a wide variety of devices. The use of electric motors as drives for elevator cars is also known in the art. Elevator systems for the vertical and / or horizontal transport of people and / or goods are an integral part of modern residential and commercial buildings. A typical elevator system has an elevator shaft in which at least one car is moved between landing positions via a support means using a drive.

[0007] The applications of electric motors often require them to be cost-effective and compact. In particular, electric motors must be easy to install and connect, even in confined spaces.

[0008] EP 2 033 922 B1 discloses an electric motor for an elevator drive with several connecting terminals located in the interior, with a cable entry for a cable with multiple conductors provided in a wall of a motor housing. Description - Technical Solution

[0009] Based on this situation, the present task is to propose an electric motor that is cost-effective and requires little space.

[0010] The present object is achieved by the features of the independent main claims. Advantageous embodiments are specified in the subclaims. To the extent technically feasible, the teachings of the subclaims can be combined arbitrarily with the teachings of the main and subclaims.

[0011] In particular, the object is accordingly achieved by an electric motor for generating a torque, comprising a motor housing and one or more motor components arranged in the motor housing with a plurality of first conductors connected thereto, wherein at least one first wall of the motor housing has at least one passage, wherein at least one through-terminal is arranged in the at least one passage such that a first connection for connecting a first conductor is arranged inside the motor housing and a second connection, conductively connected to the first connection, for connecting a second conductor is arranged outside the motor housing, and wherein each first conductor is connected to a separate through-terminal arranged in a passage.

[0012] Advantageous aspects are explained below, and preferred modified embodiments are described further below. Explanations, particularly regarding advantages and definitions of features, are essentially descriptive and preferred, but not limiting, examples. If an explanation is limiting, this will be expressly stated.

[0013] Where ordinal numbers ("first", "second", etc.) are used, for example to designate a component, an element, a process step, or a process action, these ordinal numbers are intended purely for differentiation in the designation and do not indicate any dependencies or sequences. This means, in particular, that, for example, a device does not have to have a "first component" in order to have a "second component." A device can also have a "first component" and a "third component" without necessarily having a "second component." Multiple units with the same ordinal number can also be provided, for example, multiple "first components."

[0014] An electric motor is an electromechanical converter, i.e., an electrical machine, that converts electrical power into mechanical power. In conventional electric motors, current-carrying conductor coils generate magnetic fields whose mutual forces of attraction and repulsion are converted into motion. An electric motor consists of a stationary stator and a rotor that rotates relative to it. Either one of the stator contains permanent magnets and the other electrical coils, or both components contain electrical coils. Each current-carrying coil generates a magnetic field whose orientation depends on the direction of the current. By continuously switching the current direction or appropriately reversing the polarity of the coils during rotation, continuous rotation of the rotating rotor is achieved.

[0015] A motor component is, in particular, a stator, a rotor, or a commutator—a disk with electrical connections to which the coils are connected and which reverses the polarity of the coils during rotation. A motor component can also be a power converter, in particular a frequency converter. A first conductor is provided on the aforementioned components, in particular for providing one phase of a power supply. A motor component is furthermore, in particular, a control device, in particular a control unit with a data processing device such as a microcontroller. A first conductor is provided on such a control device, for example, for transmitting a control signal or for providing one phase of a power supply.

[0016] A motor housing is understood to be the entirety of covers by which the motor components are fully or partially enclosed and which separate the motor components from the environment. The motor housing is formed in particular by several walls that are connected to one another and / or to motor components. Furthermore, the motor components themselves can form parts of the motor housing through external surfaces. A penetration is a recess that pierces the motor housing and thus forms a clear connection between the exterior and interior of the motor housing. A conductor is a single, electrically conductive device and differs in particular from a cable in that it forms part of the cable, whereby a cable usually has several conductors. As understood today, a conductor only ever provides a single potential or signal and only has one conduction direction at a time.In particular, a conductor is a wire or strand of a multi-conductor cable.

[0017] A feed-through terminal block is an electronic component with a first connection for receiving a single conductor and a second connection for receiving a single conductor, whereby the feed-through terminal block forms a galvanically conductive connection between the two received conductors or between the two connections. Feed-through terminal blocks are known as standard components, particularly in control cabinet construction, and are therefore mass-produced. Accordingly, such feed-through terminal blocks are correspondingly cost-effective. In particular, feed-through terminal blocks from control cabinet construction are intended to be clamped onto a so-called mounting rail using a clamping part, whereby mounting rails or the clamping devices have or adopt standardized dimensions. However, feed-through terminal blocks are also known as components unrelated to control cabinet construction and are available at low cost.A conductor is connected to a through terminal, for example, by inserting the conductor, whereby the insertion can already cause locking and contacting, or whereby contacting and contacting is established by an operating element.

[0018] For the purposes of the present disclosure, all features and aspects explained with reference to a single through-terminal can be applied to multiple through-terminals, and in particular to all through-terminals. Aspects and features that can be explained with reference to a plurality of through-terminals can also be understood to refer to a single through-terminal, insofar as this makes sense from the context.

[0019] The above solution to the problem with an electric motor now includes the teaching that the external connection of the electric motor, to which supply and / or signal conductors are to be connected during assembly, is formed by through-terminals arranged in a wall of the electric motor. In this way, the passage of the conductors through the motor housing is formed by a cost-effective component, and other complex and cost-intensive feedthroughs through the motor housing, such as special plug or cable feedthroughs, can be dispensed with. Furthermore, the motor components can be connected directly to the first connections of the through-terminals without providing any further division of conductors within the motor housing. The electric motor can thus be designed to be particularly compact.In particular, several through-terminals can be positioned independently of one another on the first wall for a particularly compact arrangement. Of course, several through-holes can also be formed on different walls of the motor housing, each of which houses through-terminals, in order to enable the shortest possible first conductors and thus a particularly compact electric motor. Furthermore, by selecting the through-terminal, the external connection pattern can also be adapted to the installation conditions. In particular, the direction from which the second conductors are connected during installation can be adapted or adapted relatively freely to the installation conditions, in particular to the available surrounding installation space.Ultimately, it is possible to connect the second conductor to the electric motor without having to open the motor housing during assembly, so that the space required for the connection is also limited in this respect.

[0020] As an alternative to the features described above, or in a preferred embodiment of the above, it is provided that a support element is arranged orthogonally to the first wall in the at least one passage, wherein the through-terminal is held on the support element. The through-terminal can be securely held in the passage by the support element, wherein, in particular, a holding surface which is significantly larger than the wall thickness of the first wall is provided for holding the through-terminal. In particular, the support element is a component separate from the first wall, and it is provided that the support element and the through-terminal are arranged and connected to one another during factory assembly of the electric motor on the electric motor, before the first wall is mounted.The opening in the first wall is then designed, for example, so that it can be pushed over the through-clamp already arranged on the support element during assembly of the first wall. It can also be provided that the through-clamp is first attached to the support element, and then the through-clamp and the support element are arranged as a composite on the first wall. In a preferred embodiment of the immediately above-described embodiment, the through-clamp is held in a form-fitting manner on the support element. The through-clamp can then be attached to the support element particularly easily and, in particular, without the use of tools.Particularly preferably, the support element is designed such that the through-clamp is first arranged on the support element, and the positive connection is then established and / or secured by a subsequently mounted first wall or by arranging the support element and the through-clamp on an already mounted first wall. For example, the support element and the through-clamp arranged thereon are inserted into the passage.

[0021] As an alternative to the features described immediately above, or in a preferred embodiment of the features described immediately above, the support element is designed with a geometry corresponding to the cross-section of a support rail, and the through terminal is clamped onto the support element. A support rail—also called a DIN rail or, in the case of a top-hat profile, a top-hat rail—is a universal support made of a profile, for example made of sheet metal or plastic, and is used in electrical engineering for attaching electrical equipment in distribution boxes, switch cabinets, junction boxes, and the like. Various components, such as relays, impulse switches, timers, circuit breakers, or terminal blocks, can be pushed onto a support rail from the side or plugged in from the front and locked in place, in particular by clamping. The assembly of switch cabinets and control boxes is facilitated by this standardized method.Various mounting rail types are standardized in the DIN EN 60715:2018-07 standard (Dimensions of low-voltage switchgear and controlgear - Standardized mounting rails for the mechanical mounting of electrical equipment in switchgear). Standard components, which have geometries corresponding to the cross-section of a mounting rail and are particularly cost-effective as mass products, can therefore be used particularly advantageously as through-terminals. Conversely, by designing the support element with the cross-sectional geometry of a mounting rail, the mounting geometry existing in standard through-terminals is advantageously adopted and used to attach the through-terminal.

[0022] As an alternative to features of the immediately preceding description or in a preferred

[0023] In an embodiment of what has been described immediately above, it is provided that a coherent support element is arranged orthogonally to the first wall in a plurality of through-passages arranged on the first wall, wherein the through-terminals are each held on the support element. In an embodiment with a plurality of through-passages, the support element can then be handled more easily than with a plurality of support elements, each through-passage, and only a single assembly process is necessary. In particular, in embodiments in which the through-terminals are first fastened to the support element and only subsequently is the first wall or the first wall mounted, the pre-assembly is advantageously particularly simple.The through-hole is then dimensioned accordingly, for example, so that when assembling the first wall, after the support element and the through-terminals have been installed, it can be pushed over all the through-terminals at the same time.

[0024] As an alternative to the features described above, or in a preferred embodiment of the above, the second terminal is aligned parallel to the first wall, so that a second conductor running parallel to the first wall can be connected straight to the second terminal. A conductor running parallel to the first wall therefore runs straight at and in the second terminal and has no kinks or bends. The connection of the second conductor is thus possible in such a way that a connected second conductor takes up very little installation space in the vicinity of the electric motor, and that only a small amount of such installation space is required to connect the second conductor. In particular, in conjunction with the compact design of the electric motor itself described above, a particularly low installation space requirement is therefore achieved overall.

[0025] Furthermore, alternatively, one embodiment provides that the through terminal has a plurality of, in particular two, second connections, wherein the plurality of second connections are aligned in different directions. The plurality of second connections are then galvanically connected to the same first connection or the same first connections. In particular, a first second connection is aligned parallel to the first wall and a second second connection is aligned orthogonally to the first wall. The electric motor is then advantageously designed for alternative connection patterns or connection situations depending on the application. Independently of the second connection, the first connection can be aligned optionally parallel, obliquely, or orthogonally to the first wall.In particular, the through terminal can be selected in such a way that the connection of the first conductor to the through terminal within the motor housing can be made particularly simple and compact for each through terminal.

[0026] In a preferred embodiment of the immediately above-described embodiment, the at least one through-terminal has an operating element for opening and closing the second connection, wherein the operating element is designed to be accessible from a direction parallel to the first wall. An operating element is in particular a push-button of a terminal, such as a plastic clip, or an engagement of a screw and serves to lock a conductor connected to the second connection by means of holding means and to securely contact it or to bring it into contact with the conductive part of the through-terminal and to hold it there. In this respect, a through-terminal can be opened (briefly), in particular by a tool such as a screwdriver, in order to connect the second conductor.If the operating element is designed to be accessible from a direction parallel to the first wall, the tool can then be guided with its main extension parallel to the first wall. The space required for connecting the electrical machine is then kept particularly small.

[0027] In a further embodiment, the second terminals are designed such that the second conductors are easily plugged in. This means that the second conductors are opened by inserting them, and the second conductors are locked in place by the insertion process, even when plugged in. Advantageously, the second conductors can then be inserted particularly easily and without tools from the direction in which the second terminals are aligned. The second conductors can also be combined on a single plug to make connection particularly easy.

[0028] As an alternative to the features described above, or in a preferred embodiment of the above, the electric motor further comprises a receiving plate held externally on the first wall, said receiving plate having at least one receptacle for a second conductor connected to the second terminal, the receptacle being spaced from the second terminal. A second conductor connected to the second terminal is then held and guided at two points by its attachment to the second terminal on the one hand and by the second receptacle, and is thus effectively secured against damage and against escaping from the second terminal. Furthermore, strain relief devices can be arranged on the receiving plate, to which the second conductors are additionally held. The receptacle therefore forms a guide and optionally a strain relief device and accordingly acts as a guide and protector for the second conductor.In particular, several second conductors can be combined in a cable assigned to a receptacle.

[0029] Furthermore, the receiving plate preferably has a plurality of receptacles, in particular on different sides. For example, the receiving plate has one or more bevels, each of which protrudes perpendicularly from the first wall and in which the receptacle or several receptacles for second conductors running parallel to the first wall are arranged.

[0030] Holding elements, particularly made of rubber, are preferably arranged in the receptacle(s) of the receiving plate. These elements hold the second conductors or a cable comprising several second conductors and are further protected from direct contact with the sheet material of the receiving plate. The receiving plate is formed, for example, from a metal or plastic material.

[0031] As an alternative to the features described immediately above, or in a preferred embodiment of the features described immediately above, the receiving plate has at least one further passage for the through-terminal or through-terminals. The receiving plate can then be held on the first wall so as to encompass the through-terminal(s), so that a particularly large surface area of ​​the first wall can be provided for holding the receiving plate, and so that receptacles for second conductors can be provided on the receiving plate over the entire surface of the first wall, for example on corresponding folds. In particular, the further passage orthe further through-passages are designed in such a way that the receiving plate can be pushed over the through-terminal(s), so that the receiving plate can be mounted particularly easily on the first wall, even after the through-terminal(s) and any support have already been mounted. As an alternative to features described above, or in a preferred embodiment of the above, it is provided that the first wall and / or the receiving plate encloses the at least one through-terminal. The through-terminal is then held in a form-fitting manner in the through-passage, in particular by the first wall or the receiving plate, and the first wall or the receiving plate and the through-terminal form a substantially closed closure of the electric motor to the outside. The closing function of the motor housing is therefore also maintained with the through-passage and the through-terminal arranged therein.

[0032] As an alternative to the features described above, or in a preferred embodiment of the above, a sealing element is arranged in the at least one through-passage and / or the at least one further through-passage between the first wall or the receiving plate and the through-terminal. The sealing function of the motor housing is thus maintained even with the through-passage or the further through-passage and the through-terminal arranged therein, and the penetration of undesirable substances such as foreign bodies, dirt, dust, liquid, and the like at the through-passage is prevented.

[0033] As an alternative to the features described above, or in a preferred embodiment of the above, it is provided that at least one first conductor forms a phase of a power supply for a motor component, at least one first conductor forms a protective conductor for a power supply for a motor component, and / or at least one first conductor is provided for conducting a control signal. These types of conductors represent the types of conductors typically passed through the motor housing of electric motors and connected externally. Particularly preferably, all conductors of the motor components present in the electric motor are passed through walls of the motor housing by means of through-terminals as described above.

[0034] The object is further achieved by an elevator system comprising: at least one elevator shaft, at least one car movable along the elevator shaft, and at least one drive configured as an electric motor according to the above-described solution, wherein the car is drivable via a support means by means of the drive. An elevator shaft is a continuous shaft extending over several floors or along several areas of a building and having a cross-section designed for the passage of the elevator car. An elevator shaft of the elevator system can extend vertically and / or horizontally, with electric motors being used for the drive, particularly in elevator systems with vertical elevator shafts.

[0035] A support means is particularly designed as a rope, belt, chain, or the like and carries tensile loads in the direction of its longitudinal extension. Particularly preferably, the support means interacts with the drive via a traction sheave and is held, guided, driven, and optionally braked by a brake on the traction sheave.

[0036] The above solution to the problem with an elevator system now includes the teaching that the drive is designed as an electric motor as described above, and the aforementioned advantages are accordingly transferred to the elevator system. The elevator system is therefore particularly cost-effective and compact, and the available installation space in the elevator system is utilized advantageously and in an installation-friendly manner.

[0037] In a preferred embodiment of the immediately above-described embodiment, the electric motor is arranged in a shaft head of the elevator shaft. The shaft head is understood to be an end portion of an interior space of the shaft. In a vertical elevator shaft, the shaft head is formed in particular by the upper end of the elevator shaft and is located, for example, opposite a shaft pit formed at a lower end. By providing the drive in the shaft head, a separate machine room outside, in particular above, the elevator shaft can be dispensed with, and the elevator system can be designed particularly compactly. The building in which the elevator system is arranged then, in particular, does not need to have a floor or a structure for a machine room above the uppermost floor served by the elevator system.In other words, a building can be advantageously served by the elevator system up to its highest point without requiring any additional structure on top of the building. The aforementioned advantages are particularly evident when the drive is located in the shaft head, as the available space in a shaft head is usually particularly limited. Conversely, the compact design of the electric motor makes it possible to install it in a shaft head.

[0038] In a preferred embodiment of the immediately above-described embodiment, the electric motor is arranged with the first wall opposite a shaft wall of the elevator shaft. This still allows the second conductor to be connected to the through terminal(s) if the second terminal(s) is / are aligned parallel to the first wall. The electric motor can then advantageously be arranged in the shaft head and subsequently connected easily and securely despite the limited available space.

[0039] Short description of the drawings

[0040] A preferred technical solution is explained in more detail below with reference to the accompanying drawings using preferred embodiments. The term "figure" is abbreviated to "Fig." in the drawings.

[0041] The drawings show

[0042] Fig. 1 is a perspective view of an electric motor according to a previously described solution to the problem;

[0043] Fig. 2 is a side view of an opened electric motor according to Fig. 1 with second conductors connected thereto;

[0044] Fig. 3 is an exploded view of an electric motor according to a previously described solution to the problem in a further embodiment; and

[0045] Fig. 4 is a schematic view of an elevator system according to a previously described solution to the problem.

[0046] Detailed description of the drawings

[0047] The described embodiments are merely examples that can be modified and / or supplemented in a variety of ways within the scope of the claims. Each feature described for a specific embodiment can be used independently or in combination with other features in any other embodiment. Each feature described for an embodiment of a specific claim category can also be used correspondingly in an embodiment of a different claim category.

[0048] Figure 1 shows an electric motor 1 with a motor housing 2, wherein a first wall 2.1 of the motor housing 2 on the head side, which is connected to the rest of the motor housing 2 via screw connections 3, is shown transparent. Arranged inside the electric motor 1 are a first motor component 4.1 designed as a rotor and a second motor component 4.2 designed as a stator, which have first conductors (not initially shown in detail in Figure 1) for power supply and / or control. The first wall 2.1 has a first through-passage 5.1 and a second through-passage 5.2, wherein four through-passage terminals 6.1, 6.2, 6.3, 6.4 are arranged in the first through-passage 5.1 and two through-passage terminals 6.5, 6.6 are arranged in the second through-passage. The first wall 2.1 lies against the through-passage terminals 6.1, . . . , 6.6 or the passages 5.1, 5.2 are completely filled by the through terminals 6.1, ..., 6.6, so that the motor housing 2 is essentially closed.Furthermore, although not shown in more detail, further passages with through terminals arranged therein can also be provided on other walls of the motor housing 2.

[0049] Figure 2 shows the electric motor 1 according to Figure 1 in the area around the through terminals 6.1, . . . , 6.6 in detail and cut away. The through terminals 6.1, . . . , 6.6 are designed as standard terminals for switch box construction and are each held on a support element 7 arranged orthogonally to the first wall 2.1, which has a geometry corresponding to the cross-section of a support rail and a web 7.1, so that the support element 7 extends over both openings 5.1, 5.2. The through terminals 6.1, . . . , 6.6 are clamped onto this support element 7 by means of clips, by means of which they can also be clamped onto the support rails of a switch box. Located inside the motor housing 2, the through terminals 6.1, ..., 6.6 have first connections 8.1, to each of which a first conductor 9.1, 9.2, 9.3, 9.4 is connected, in particular clamped. The first conductors 9.1, . . . , 9.4 are in particular assigned to a power supply; the first conductor 9.1 is a grounding conductor for grounding the first wall 2.1, while conductors 9.2, 9.3, 9.4 are phases or protective conductors of the power supply. Located on the outside of the motor housing 2, the through terminals 6.1, 6.6 have second connections 8.2, to each of which a second conductor 10 is connected, in particular clamped. The second conductors 10 are combined in a cable 11 and therefore cannot be seen in detail in Figure 2. The second conductors 10 correspond in their assignment to the first conductors 9.1, ..., 9.4, to which they are respectively connected via the through terminals 6.1, . . . , 6.6.

[0050] As further shown in Figure 2, the second terminals 8.2 are arranged on the through terminals 6.1, ..., 6.6 such that they are aligned parallel to the first wall 2.1. The second conductors 10 of the cable 11, which runs parallel to the first wall 2.1, can thus be connected directly to the second terminals 10, and the cable 11 does not require any kinks or bends for connection.

[0051] Figure 3 shows an electric motor 1 which is similar to the electric motor 1 shown in Figures 1 and 2 in essential features not described again and which further comprises a mounting plate 12 held in contact with the first wall 2.1 - in Figure 3, the first wall 2.1 and the mounting plate 12 are shown spaced apart from one another in an exploded view. The mounting plate 12 is, for example, glued, screwed, or adhesively bonded to the first wall 2.1. The mounting plate 12 has a base 12.1 which bears against the first wall 2.1 and has a first further passage 13.1 for arrangement around the four through terminals 6.1, 6.2, 6.3, 6.4 and a second further passage 13.2 for arrangement around the two through terminals 6.5, 6.6. The other penetrations 13.1, 13.2 correspond, for example, to the penetrations 5.1, 5.2 and are aligned with these around the through terminals 6.1, 6.2, 6.3, 6.4, 6.5, 6.6, wherein, for example, the through-holes 5.1, 5.2, 13.1, 13.2 are pushed over the through terminals 6.1, 6.2, 6.3, 6.4, 6.5, 6.6 during assembly of the electric motor 1, after the through terminals 6.1, 6.2, 6.3, 6.4, 6.5, 6.6 have already been mounted on the support 7. The base 12.1 then rests completely against the first wall 2.1.

[0052] The receiving plate 12 further has bevels 12.2, 12.3, which are perpendicular to the base 12.1 or the first wall 2.1 and have receptacles 15.1, 15.2, 15.3, 15.4 designed as through holes. Retaining elements 16.1, 16.2, 16.3, 16.4 are arranged in the receptacles 15.1, 15.2, 15.3, 15.4, through which the second conductors 10 or cables 11 (not shown in detail in Figure 3) can be received and guided at a distance from the through terminals 6.1, 6.2, 6.3, 6.4, 6.5, 6.6. The holding elements 16.1, 16.2, 16.3, 16.4 are designed as rubber covers and thus, in addition to the holding function for the second conductor 10 or for the cable 11, also cover the receptacles 15.1, 15.2,

[0053] 15.3, 15.4. The receptacles 15.1, 15.2, 15.3, 15.4 with the holding elements 16.1, 16.2, 16.3, 16.4 allow an orderly arrangement of the second conductor 10 or cable 11 in the area in front of the first wall 2.1. Furthermore, a strain relief 17 for receiving a second conductor 10 or cable 11 guided through the first receptacle 15.1, as well as devices for further strain relief 17, are arranged on the base 12.1.

[0054] Figure 4 shows a simplified illustration of an elevator system 20 with an elevator shaft 21 and a car 22 movable within the elevator shaft 21. The car 22 has a car door 23 which, together with a plurality of landing doors 24.1, 24.2, 24.3, 24.4, can each form a passage in the respective landing position. The car 22 is held, in a highly simplified illustration, against a counterweight 27 by a support member 26 guided on deflection members 25. The support member 26 is further driven by a traction sheave 28, with the necessary drive torque being provided by the electric motor 2 operatively connected to the traction sheave 28. The electric motor 2 is arranged in a shaft head 21.1 of the elevator shaft 21, with the first wall 2.1 directly adjacent to a shaft wall 21.2.

[0055] List of reference symbols

[0056] 1 electric motor

[0057] 2 engine housings

[0058] 2.1 first wall of the motor housing

[0059] 3 screw connection

[0060] 4.1 Motor component (rotor)

[0061] 4.2 Motor component (stator)

[0062] 5.1 first intervention

[0063] 5.2 second penetration

[0064] 6.1 Feed-through terminal

[0065] 6.2 Feed-through terminal

[0066] 6.3 Feed-through terminal

[0067] 6.4 Feed-through terminal

[0068] 6.5 Feed-through terminal

[0069] 6.6 Feed-through terminal

[0070] 7 Support element

[0071] 7.1 Web of the support element

[0072] 8.1 first connection

[0073] 8.2 second connection

[0074] 9.1 first leader

[0075] 9.2 first leader

[0076] 9.3 first leader

[0077] 9.4 first leader

[0078] 10 second leader

[0079] 11 cables

[0080] 12 mounting plate

[0081] 12.1 Base of the mounting plate

[0082] 12.2 Bending of the mounting plate

[0083] 12.3 Bending of the mounting plate

[0084] 13.1 first further intervention

[0085] 13.2 second further penetration

[0086] 15.1 Mounting of the support plate Mounting of the support plate Mounting of the support plate Mounting of the support plate Holding elements of the support plate Holding elements of the support plate Holding elements of the support plate Strain relief Lift system Lift shaft Shaft head of the lift shaft Shaft wall of the lift shaft Car Car door Landing door Landing door Landing door Landing door Deflection means Support means Counterweight Traction sheave

Claims

Claims 1. Electric motor (1) for generating a torque, comprising: a motor housing (2); and one or more motor components (4.1, 4.2) with a plurality of first conductors (9.1, . . ., 9.4) connected thereto; wherein at least one first wall (2.1) of the motor housing (2) has at least one through-passage (5.1, 5.2); wherein at least one through-terminal (6.1, . . . , 6.6) is arranged in the at least one through-passage (5.1, 5.2) such that a first connection (8.1) for connecting a first conductor (9.1, . . ., 9.4) is arranged inside the motor housing (2) and a second connection (8.2) conductively connected to the first connection (8.1) for connecting a second conductor (10) is arranged outside the motor housing (2); and wherein each first conductor (9.1, . . ., 9.4) is connected to a separate through terminal (6.1, . . ., 6.6) arranged in a passage (5.1, 5.2).

2. Electric motor (1) according to claim 1, wherein in the at least one passage (5.1, 5.2) a support element (7) is arranged orthogonally to the first wall (2.1), wherein the through terminal (6.1, . . ., 6.6) is held on the support element (7).

3. Electric motor (1) according to claim 2, wherein the through terminal (6.1, . . ., 6.6) is held in a form-fitting manner on the carrier element (7).

4. Electric motor (1) according to claim 2 or 3, wherein the support element (7) is designed with a geometry corresponding to the cross section of a support rail and the through terminal (6.1, . . ., 6.6) is clamped onto the support element (7).

5. Electric motor (1) according to one of claims 2 to 4, wherein a continuous carrier element (7) is arranged orthogonally to the first wall (2.1) in a plurality of passages (5.1, 5.2) arranged on the first wall (2.1), wherein the through terminals (6.1, ..., 6.6) are each held on the carrier element (7).

6. Electric motor (1) according to one of the preceding claims, wherein the second connection (8.2) is aligned parallel to the first wall (2.1), so that a parallel to the second conductor (10) running along the first wall (2.1) can be connected directly to the second terminal (8.2).

7. Electric motor (1) according to claim 6, wherein the at least one Through terminal (6.1, . . ., 6.6) has an operating element for opening and closing the second connection (8.2), wherein the operating element is designed to be accessible from a direction parallel to the first wall (2.1).

8. Electric motor (1) according to one of the preceding claims, further comprising a receiving plate (12) held externally on the first wall (2.1) with at least one receptacle (15.1, 15.2, 15.3, 15.4) for a second conductor (10) connected to the second terminal (8.2), wherein the at least one receptacle (15.1, 15.2, 15.3, 15.4) is spaced from the second terminal (8.2).

9. Electric motor (1) according to claim 8, wherein the receiving plate (12) has at least one further passage (13.1, 13.2) for the at least one through terminal (6.1, . . ., 6.6).

10. Electric motor (1) according to one of the preceding claims, wherein the first wall (2.1) and / or the receiving plate (12) encloses the at least one through terminal (6.1, ..., 6.6).

11. Electric motor (1) according to one of the preceding claims, wherein in the at least one passage (5.1, 5.2) and / or the at least one further passage (13.1, 13.2) a sealing element is arranged between the first wall (2.1) or the receiving plate (12) and the through terminal (6.1, . . . , 6.6).

12. Electric motor (1) according to one of the preceding claims, wherein at least one first conductor (9.1, . . . , 9.4) forms a phase of a power supply of a motor component (4.1, 4.2), at least one first conductor (9.1, . . ., 9.4) forms a protective conductor of a power supply of a motor component (4.1, 4.2) and / or at least one first conductor (9.1, . . ., 9.4) is provided for conducting a control signal.

13. Elevator installation (20), comprising: at least one elevator shaft (21); at least one elevator car (22) movable along the elevator shaft (21); and at least one drive designed as an electric motor (1) according to one of the preceding claims; wherein the elevator car (22) is drivable by means of the drive via a support means (26).

14. Elevator installation (20) according to claim 13, wherein the electric motor (1) is arranged in a shaft head (21.1) of the elevator shaft (21).

15. Elevator installation (20) according to claim 14, wherein the electric motor (1) is arranged with the first wall (2.1) opposite a shaft wall (21.2) of the elevator shaft (21), wherein the drive is designed as an electric motor (1) according to one of claims 6 or 7.

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