Sensor holder for pressing a temperature sensor onto a winding of an electric motor

Abstract

The invention relates to a sensor holder (1) for pressing a temperature sensor (7) onto a winding (2) of an electric motor, wherein the sensor holder (1) has a connecting section (10) for attaching the sensor holder (1) in a floating or fixed manner to a component of the electric motor, and also a holding section (20), said sections being connected to one another exclusively by a first spring (31), wherein the holding section (20) has a reception space (23) for receiving the temperature sensor (7), which reception space adjoins the winding (2) on a first side (21), wherein a second spring (32) is provided on the holding section (20) on a second side (22) that is opposite the first side (21) and remote from the winding (2), which second spring is designed to press the holding section (20) and / or the temperature sensor (7) received in the reception space (23) against the winding (2).

Description

[0001] Sensor holder for pressing a temperature sensor onto a winding of an electric motor

[0002] Description:

[0003] The invention relates to a sensor holder for pressing a temperature sensor onto a winding of an electric motor, a system comprising such a sensor holder and a receptacle arranged on the winding, and an electric motor with such a sensor holder. In the prior art, the winding temperature of electric motors is often detected by at least one temperature sensor. Usually, however, several temperature sensors and, for example, two PTC and one NTC temperature sensors are provided. For this purpose, the temperature sensors must preferably be arranged directly on a winding of the electric motor or a winding overhang of the winding. Various variants are known for arranging the temperature sensors on the winding(s). For example, the sensor is embedded in the overmolding of the winding during the overmolding of the windings, or a receptacle is formed in the overmolding, into which the sensor is later inserted.Alternatively, it is already known to provide a sensor holder in which the sensor is accommodated and with which the sensor is arranged on the associated winding.

[0004] However, for accurate or error-free temperature measurement, it is important to establish the best possible thermal connection between the temperature sensor or its measuring surface and the winding.

[0005] Therefore, even with the variants known in the state of the art, there is a need to further improve the thermal connection and the long-term maintenance of the thermal connection.

[0006] The invention is therefore based on the object of overcoming the aforementioned disadvantages and providing a device by means of which a temperature sensor can be permanently and thermally well connected to a winding of an electric motor.

[0007] This problem is solved by the combination of features according to patent claim 1.

[0008] According to the invention, a sensor holder for pressing a temperature sensor onto a winding of an electric motor is therefore proposed. The motor preferably has a plurality of winding strands, each of which forms a plurality of windings. The sensor holder has a connecting section and a holding section. The connecting section is suitable and preferably designed to fasten or hold the sensor holder in a floating or stationary manner to a component of the electric motor, wherein the component can in particular be a circuit board, a switching disk, or a stator bushing of the electric motor. The connecting section and the holding section are connected to one another exclusively by a first spring. The holding section also has a receiving space for receiving the temperature sensor, which, when the sensor holder is used as intended, borders on the winding of the electric motor on a first side.A second spring is provided on the holding section on a second side opposite the first side and facing away from the winding, which second spring is designed to press the holding section and / or the temperature sensor against the winding.

[0009] What is essential to the invention is that the sensor holder does not have just one spring, as is partly known in the prior art, but two separate springs.

[0010] The first spring serves primarily to define the base position of the holding section or its receiving space on the winding. If the sensor holder is mounted, for example, floating on a circuit board of the electric motor or on a switching disc of the electric motor, this first spring does not affect the contact pressure of the holding section and the temperature sensor arranged therein against the winding.

[0011] If the sensor holder is mounted firmly on the circuit board of the electric motor or on the switching disk of the electric motor, for example, this first spring can already generate a contact pressure of the holding section and the temperature sensor that can be arranged therein against the winding. However, if the sensor holder is incorrectly positioned or the environment around the sensor holder is faulty, the first spring can also reduce the contact pressure. With the proposed second spring, the holding section or the temperature sensor that can be accommodated therein can be pressed against the winding or its winding head by mounting the sensor holder on the winding, so that the second spring generates additional contact pressure against the winding.For this purpose, the second spring can, for example, be supported on a second winding or its overmolding, which is immediately adjacent to the first winding at which the temperature is to be measured by the temperature sensor.

[0012] The contact pressure of the sensor holder and / or the temperature sensor that can be arranged therein is therefore not determined or not only determined by the first spring, but in particular by the second spring.

[0013] Preferably, the second spring is also designed to specifically press the temperature sensor or a measuring surface of the temperature sensor and / or the region of the holding section in which the temperature sensor or its measuring surface is arranged against the winding whose temperature is to be detected.

[0014] In addition, it is further provided in particular that the base of the second spring, at which the second spring merges into the holding section or the second side of the holding section, is arranged directly adjacent to a temperature sensor arranged as intended in the receiving space or directly adjacent to a target position of a temperature sensor that can be arranged in the receiving space, so that the temperature sensor or its target position lies between the base of the second spring and the winding at which the temperature is to be measured. With such an arrangement, the contact pressure built up by the second spring can be transmitted directly to the temperature sensor and, via the temperature sensor, to the winding.An advantageous development provides that the holding section extends along a longitudinal axis and the first spring is designed to enable a rotational movement of the holding section about a base of the first spring, wherein the first spring merges into the connecting section at its base. Additionally or alternatively, the first spring is designed to enable a substantially orthogonal movement to the longitudinal axis relative to the connecting section. As a result, when the connecting section is fixedly mounted, a positional offset between a desired position of the circuit board or the cover plate and their actual position can be compensated for. Furthermore, during intended use, a contact pressure of the holding section on the winding can also be generated.

[0015] A rotational movement of the holding section usually occurs when the sensor holder is fixed to the circuit board or switching disc and thus not in a floating position. With a floating position, however, the holding section will usually move orthogonally to the longitudinal axis or parallel to the circuit board or switching disc.

[0016] In one variant of the sensor holder, the connecting section also has an opening for cable passage, located particularly at the base of the first spring. The opening is designed, in particular, to guide the temperature sensor through the connecting section into the holding section. Although the sensor holder is preferably equipped with the temperature sensor through the opening before mounting on the stator, it is also possible to equip the sensor holder with the temperature sensor through such an opening after the sensor holder has already been mounted on the stator.

[0017] If an opening corresponding to the opening in the connection section is also provided in the circuit board or the switching disc, the temperature sensor can also be inserted, for example, through the two openings into the holding section or the receiving space there.

[0018] Furthermore, the connection section of the sensor holder can also be arranged or rest on a side of the circuit board or switching disc facing the windings, or on a side of the circuit board or switching disc facing away from the windings. Therefore, if an opening is provided in the circuit board or switching disc, this opening can also be designed such that the sensor holder is pushed through the opening with the holding section or with the connection section, so that the holding section is arranged on a side facing the windings and the connection section rests on the side facing away from the windings.

[0019] It is preferably provided that the receiving space is pocket-shaped and is open exclusively towards the connection section and / or the winding.

[0020] In principle, however, alternative forms of the recording chamber are also possible, whereby the temperature sensor should be held securely in the recording chamber.

[0021] A particularly advantageous variant is one in which the second spring is provided on a wall defining the second side of the holding section and the receiving space. In particular, the second spring extends away from the first side with a free end, so that the free end of the second spring can be supported, building up contact pressure, against, for example, the adjacent second winding or a receptacle defined by the overmolding.

[0022] However, the second spring does not necessarily have to have a free end or exactly one free end. For example, the spring can also be V- or C-shaped. A V- or C-shaped second spring can be arranged convexly or concavely on the holding section and can merge into the holding section at its ends or extend away from the holding section with its ends.

[0023] In an advantageous refinement, the wall defining the second side of the holding section is also slotted on both sides of the spring, so that the wall can be displaced into the receiving space, at least in sections and in particular resiliently. If the wall is displaced into the receiving space, a temperature sensor arranged or capable of being arranged therein can be pressed toward the first side and thus against the winding.

[0024] The slots can also extend from the wall into a base closing off the receiving space and, in particular, can completely sever the base, so that the base can be displaced together with the section of the wall by the second spring.

[0025] In addition, the wall can be slotted not only on both sides of the second spring, but also connecting the two lateral slots at a base point of the second spring, where it merges into the wall.

[0026] In particular, if the lateral slots are connected to each other at the base point of the second spring, the base closing off the receiving space can be connected to the wall on the first side, to the wall on the second side or to further walls of the sensor holder delimiting the receiving space, since in this case the base does not have to be designed to be displaceable by the second spring.

[0027] Alternatively, the wall itself can form the second spring through corresponding slots. A particularly wedge-shaped projection extending from the first side can be arranged on such a section of the wall forming the second spring, through which the second spring can be displaced into the receiving space.

[0028] A variant of the sensor holder is also advantageous in which a region of the holding section arranged between the first spring and the receiving space is funnel-shaped. The funnel-shaped region is particularly designed to guide the temperature sensor into a desired position adjacent to a base of the second spring when the temperature sensor is inserted into the receiving space.

[0029] In addition, a further aspect proposes a sensor holder assembly comprising a plurality of sensor holders according to the invention. These are connected to one another at their connecting sections, so that the sensor holders can be arranged, for example, in a ring around a rotational axis of the electric motor. The connection of the connecting sections is preferably made of one piece, i.e., made of a materially bonded connection. Furthermore, the sensor holder assembly preferably provides a sensor holder for each winding phase of the electric motor, so that a sensor holder can be arranged on each winding phase of each winding phase.

[0030] For example, however, it is also possible for the sensor holder arrangement to have three sensor holders which are connected at their connection sections and are designed, for example, to be arranged on one winding each of different winding phases of the motor, so that the winding temperature or the temperatures of the three winding phases can be monitored.

[0031] Furthermore, however, it can also be provided that the sensor holder arrangement has several sensor holders for safety-relevant motor components, for example for one winding phase each, as well as additional sensor holders for less or non-safety-relevant components of the electric motor, which are to be additionally monitored.

[0032] For example, three sensor holders, each with a PTC sensor, can be provided for the safety-relevant components, as well as one sensor holder with an NTC sensor. The PTC sensors can then take over the motor shutdown. The NTC, on the other hand, can be designed to reduce the motor's power at high temperatures without shutting down the motor, or to prevent the motor from shutting down due to excessive temperatures.

[0033] By using such a sensor holder arrangement with multiple sensor holders, the assembly effort can be further reduced.

[0034] A further aspect of the invention also relates to a system comprising a sensor holder or a sensor holder arrangement according to the invention and a receptacle that can be arranged on a winding overhang of a winding of an electric motor. The receptacle is open on a first side towards the winding overhang or, alternatively, is closed by a material introduced into the receptacle, which material can also form an entire wall defining the first side of the receptacle. Furthermore, the material is preferably designed to transfer heat from the winding overhang to the holding section of the sensor holder or to the temperature sensor. In particular, such a material has a thermal conductivity of at least 200 and more preferably at least 300 W / mK. The material can be, for example, aluminum, copper, or plastic, which can be arranged in the receptacle, for example as a sheet or plate, closing the side facing the winding.Alternatively, the material can also be a filling compound with which the receptacle is cast or injected, thereby protecting the sensor from environmental influences. The filling compound can be plastic, for example. In addition, it can also be provided for the side facing the winding to be designed closed or to be closed with a first material (sheet metal or plate) and the receptacle then to be cast or injected with a second material. Furthermore, the receptacle is closed on a second side opposite the first side. The sensor holder can be inserted into the receptacle with the holding section through an insertion opening in the receptacle, such that the second spring of the sensor holder is supported on the closed second side of the receptacle and presses the holding section and / or the temperature sensor accommodated in the receiving space against the winding head through the open side of the receptacle.

[0035] Preferably, the receptacle is formed integrally by a compression molding of the windings, an overmolding of an end plate of the electric motor, an overmolding of the winding or an overmolding of a stator tooth around which the winding is arranged.

[0036] If a temperature sensor is inserted into the sensor holder, a system is formed consisting of the sensor holder according to the invention and a temperature sensor. The temperature sensor can be, for example, an NTC or PTC sensor. A PT1000 or a temperature monitor can also be used as such a temperature sensor.

[0037] Furthermore, one aspect of the invention relates to an electric motor with a winding, wherein a sensor holder according to the invention is arranged on the winding, so that a temperature sensor arranged in the receiving space of the sensor holder detects the temperature of the winding. If a sensor holder is provided on each of several windings, these can be connected to one another to form a sensor holder arrangement. The electric motor can also have several windings on which sensor holders are positioned.

[0038] The electric motor can simultaneously have an overmolding or overmolding of the winding or an end plate structure with an end plate and form or comprise a system according to the invention.

[0039] The features disclosed above can be combined as desired, as long as this is technically possible and they do not contradict each other.

[0040] Other advantageous developments of the invention are characterized in the subclaims or are presented in more detail below, together with the description of the preferred embodiment of the invention, with reference to the figures. They show:

[0041] Fig. 1 shows a first variant of the sensor holder in an installation situation;

[0042] Fig. 2 the first variant in a first perspective view;

[0043] Fig. 3 the first variant in a view rotated by 180°;

[0044] Fig. 4 a second variant of the sensor holder in an installation situation;

[0045] Fig. 5 the second variant in a first perspective view;

[0046] Fig. 6 the second variant in a view rotated by 180°;

[0047] Fig. 7 a third variant of the sensor holder in an installation situation;

[0048] Fig. 8 the third variant in a first perspective view;

[0049] Fig. 9 the third variant in a view rotated by 180°;

[0050] Fig. 10 shows a cross-sectional view of the second variant of the sensor holder. The figures are schematic examples. Identical reference numerals in the figures indicate identical functional and / or structural features.

[0051] The sensor holder 1 shown in Figure 1 in an installed situation or during intended use corresponds to the sensor holder 1 shown in Figures 2 and 3, so that the relevant description of the sensor holder 1 applies equally to Figures 1 to 3. For the sake of clarity, not all reference numerals relating to the sensor holder 1 are used in all figures, although the corresponding features are nevertheless present.

[0052] The same applies to the second variant of the sensor holder 1 according to Figures 4 to 6 and the third variant of the sensor holder 1 according to Figures 7 to 9.

[0053] Figures 1 and 4 each depict a partial section through a stator tooth 4 around which the winding 2 is wound, an overmolding of the stator tooth 4 forming the receptacle 40, and through the second spring 32. Figures 1 and 4 also show, by way of example, that the sensor holder 1 is not arranged between two windings, but rather on a radially outward-facing end face of the winding 2, whose temperature is to be measured, relative to the rotational axis of the electric motor. A radially inner arrangement would also be possible.

[0054] Regardless of the specific variant of the sensor holder 1, it always has a connecting section 10, with which it can be fastened in a stationary or floating manner, for example to a switching disk or, as shown in Figures 1, 4 and 7, to a printed circuit board 3. The connecting section 10 is followed by a holding section 20, which is designed to hold or accommodate a temperature sensor. The connecting section 10 and the holding section 20 are each connected via a first spring 31, so that the holding section 20 can move resiliently relative to the connecting section 10 and, in particular, can yield resiliently when the sensor holder 1 is mounted on the associated winding 2 - for example, for position correction.

[0055] According to the invention, each of the sensor holders 1 shown in Figures 1 to 9 provides a second spring 32 on the holding section 20, which extends away from the winding 2 or from the first side 21 on a second side 22 of the holding section, which on the holding section 20 is opposite a first side 21 of the holding section 20 facing the winding 2.

[0056] The second spring 32 is designed to press a temperature sensor received in the receiving space 23 of the holding section 20 or the entire holding section 20 to the first side 21 of the holding section 20 and accordingly against the winding 2, so that a good and permanent thermal coupling between the temperature sensor and the winding can be generated by the resulting contact force.

[0057] In the variant shown in Figures 1 to 3, the sensor holder 1 is inserted during assembly into a receptacle 40 formed by the overmolding of the stator tooth 4, around which the winding 2 is wound. Accordingly, the second spring 32 can be supported on the closed side 42 of the receptacle 40 and press a temperature sensor arranged in the holding section 20 against the winding 2 through the open side 41 of the receptacle 40.

[0058] On both sides of the second spring 32, slots 25 are provided which extend parallel to the longitudinal axis L through a wall 24 to a bottom 26 of the holding section 20, wherein the bottom 26 is completely severed by the slots 25, so that the bottom 26 can be moved by the second spring 32 together with the slotted section of the wall 24.

[0059] During assembly, the temperature sensor (not shown) can be guided through the opening 11 of the connecting section 10 into the pocket-shaped receiving space 23 of the holding section 20, wherein the sensor holder 1 can be arranged beforehand or subsequently with its holding section 20 through the insertion opening 43 of the receptacle 43.

[0060] The second spring 32 presses the slotted section of the wall 24 together with the bottom towards the winding 2, so that the temperature sensor arranged in the receiving space 23 is pressed against the winding by the open side 21 of the receiving space 23.

[0061] In the embodiment of the sensor holder 1 shown in Figures 4 to 6, it is provided that this is also supported with a free end 33 of the second spring 32 against a closed side 42 of a receptacle 40 formed by the overmolding of the stator tooth 4. However, the pocket-shaped receptacle space 23 is open exclusively towards the connection section 10, so that the second spring 32 presses not only a temperature sensor arranged or arrangeable in the receptacle space 23, but the entire holding section 20 through the open side 41 of the receptacle 40 against the winding 2.

[0062] In the longitudinal direction L between the receiving space 23 at the end of the holding section 20 facing away from the connecting section 10 and the connecting section 10, a funnel-shaped region 28 is also provided, through which a temperature sensor is guided into the receiving space 23 when inserted into the pocket-shaped holding section 20 in a predetermined position. The receiving space 23 is preferably designed such that a temperature sensor received therein rests against the first side 21 of the holding section 20 on the wall forming the receiving space 23, which is pressed against the winding 2 by the second spring 32, so that the temperature sensor is thermally coupled to the winding 2 via the wall.

[0063] In contrast to the first variant of the sensor holder 1 and the third variant of the sensor holder 1, the second variant shown in Figures 4 to 6 does not provide an opening in the connection section 10. In order to be able to insert the temperature sensor into the holding section 20, the holding section 20 and the connection section 10 are arranged offset from one another orthogonally to the longitudinal axis L of the holding section 20, so that a temperature sensor can be pushed past the connection section 10 into the receiving space 23.

[0064] Deviating from the installation situations shown in Figures 1 and 4, Figure 7 provides that the sensor holder 1 is supported with the free end 33 of the second spring 32 not on a receptacle 40, but on the winding 5 adjacent to the winding 2, and presses the receiving space 23 against the winding 2, as in the second variant of the sensor holder 1 according to Figures 4 to 6. The sensor holder 1 is accordingly arranged between the two windings 2, 5.

[0065] It should be noted that both the sensor holder 1 according to the third variant with a receptacle 40 and the sensor holder 1 according to one of the variants 1 or 2 without a receptacle 40 and supported on a second winding 5 adjacent to the winding 2 can be used.

[0066] The sensor holder 1 according to Figures 7 to 9, like the first variant of the sensor holder 1 according to Figures 1 to 3, provides an opening 11 in the connection section 10, which is arranged along the longitudinal axis L above the receiving space 23 open towards the connection section 10, so that the temperature sensor can be arranged through the opening 11 in the receiving space 23. Furthermore, however, the circuit board 3 also has a corresponding opening 6, so that a temperature sensor 11 can be arranged through the opening 6 of the circuit board 3 and through the opening 11 of the connection section 10 in the receiving space 23.

[0067] Regardless of the embodiment, it is essential for the sensor holder 1 that the second spring 32 builds up a contact pressure of the temperature sensor or the receiving space 23 against the winding 2 and thereby establishes a good and permanent thermal coupling of the temperature sensor with the winding.

[0068] Figure 10 shows a sectional view of the second variant of the sensor holder 1 according to Figures 4 to 6. In addition to the details described for Figures 4 to 6, Figure 10 shows a temperature sensor 7 inserted into the sensor holder 1. Furthermore, although the sensor holder 1 corresponds to the sensor holder according to Figures 4 to 6, the latter is arranged with its connecting section 10 not on a side of the circuit board 3 facing towards the winding 2, but on the side facing away from the winding 2, so that the first spring 31 extends through an opening in the circuit board 3.

[0069] Furthermore, the base or base point of the second spring 32, at which the second spring 32 merges into the wall of the holding section 20 facing away from the winding 2, is located directly adjacent to and in a horizontal plane X here directly bordering the sensor 7, which is arranged in its predetermined desired position so that it is advantageously pressed against the winding 2. Although, as shown in Figure 2, it can be provided that the second spring 32 is supported directly on the wall or on the wall forming the second side 42 of the receptacle 40, intermediate elements 8 can also be provided on this wall, by means of which manufacturing inaccuracies can be compensated and a contact force can be adjusted so that the sensor 7 or the holding section 20 of the sensor holder 1 can be pressed against the winding 2 or in the direction of the winding 2 with a predetermined and intended contact force.However, the intermediate element 8 can be dispensed with if the sensor holder 1 and / or the receptacle 40 are adapted by, for example, a tool change, applying a corresponding spring force to the sensor holder 1.

[0070] As can be seen in Figure 10, a cavity surrounding the temperature sensor 7 can remain in the receiving space 23. This cavity can be filled with a filling compound or the temperature sensor 7 can be placed in the receiving space

[0071] 23 be overmolded so that the temperature sensor 7 is protected from environmental influences and preferably the position of the temperature sensor 7 can no longer change after positioning in its desired position.

[0072] The invention is not limited to the preferred embodiments described above. Rather, a number of variants are conceivable that utilize the presented solution even in fundamentally different embodiments.

Claims

Patent claims 1. Sensor holder (1) for pressing a temperature sensor (7) onto a winding (2) of an electric motor, wherein the sensor holder (1) has a connection section (10) for floating or fixed attachment of the sensor holder (1) to a component of the electric motor and a retaining section (20) which are connected to each other exclusively by a first spring (31), wherein the retaining section (20) has a receiving space (23) for receiving the temperature sensor (7) which adjoins the winding (2) on a first side (21), wherein a second spring (32) is provided on the retaining section (20) on a second side (22) opposite the first side (21) and facing away from the winding (2), which is designed to press the retaining section (20) and / or the temperature sensor (7) received in the receiving space (23) against the winding (2).

2. Sensor holder according to claim 1, wherein the holding section (20) extends along a longitudinal axis (L) and the first spring (31) is designed to allow a rotational movement of the holding section (20) about a foot of the first spring (31) at which the first spring (31) transitions into the connecting section (10), and / or a movement substantially orthogonal to the longitudinal axis (L) relative to the connecting section (10).

3. Sensor holder according to claim 1 or 2, wherein the connection section (10) has an opening (11) for cable passage, in particular arranged at the base of the first spring (31). and wherein the opening (11) is designed, in particular, to allow the temperature sensor to pass through the connecting section (10) into the holding section (20). Sensor holder according to one of the preceding claims, wherein the receiving space (23) is pocket-shaped and open exclusively towards the connecting section (10) and / or the winding (2). Sensor holder according to one of the preceding claims, wherein the second spring (32) is provided on a wall (24) defining the second side (22) of the holding section (20) and the receiving space (23), and in particular extends away from the first side (21) with a free end (33). Sensor holder according to the preceding claim, wherein the wall (24) is slotted on both sides of the spring (32) so that the wall (24) is displaceable, at least partially, into the receiving space (23).Sensor holder according to one of the preceding claims, wherein a region (28) of the retaining section (20) arranged between the first spring (31) and the receiving space (23) is funnel-shaped and is particularly designed to guide the temperature sensor (7) into a desired position adjacent to a foot of the second spring (32) when the temperature sensor (7) is inserted into the receiving space (23). Sensor holder arrangement comprising several sensor holders (1) according to one of the preceding claims, which are particularly integrally connected to one another at their respective connecting section (10). are bound, with in particular a sensor holder being provided for each winding strand of the electric motor.System comprising a sensor holder (1) according to one of the preceding claims 1 to 7 or a sensor holder arrangement according to the preceding claim and a receptacle (40) that can be arranged on a winding head of a winding (2) of an electric motor, wherein the receptacle (40) is open or closed by a material inserted into the receptacle on a first side (41) facing the winding head and wherein the receptacle (40) is closed on an opposite second side (42), wherein the sensor holder (1) with the retaining section (20) can be inserted into the receptacle (40) through an insertion opening (43) of the receptacle (40), such that the second spring (32) of the sensor holder (1) is supported on the closed second side (42) of the receptacle (40) and presses the retaining section (20) and / or the temperature sensor (7) received in the receiving space (23) against the winding head through the open side (41) of the receptacle (40).System according to the preceding claim, wherein the receptacle (40) is integrally formed by an overmolding of the winding (2), an overmolding of an end disk, or an overmolding of a stator tooth (4) around which the winding (2) is arranged. Electric motor with a winding (2), wherein a sensor holder (1) according to one of claims 1 to 7 is arranged on the winding (2), such that a temperature sensor (7) arranged in the receiving space (23) of the sensor holder (1) detects the temperature of the winding (2). * * * * *

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