JP2019216497A - Motor control device - Google Patents

Abstract

To prevent an adhesive from protruding to a connection portion side with a winding of a motor while increasing an adhesive area to a connector for connecting a drive board and the winding of the motor when the connector is adhesively fixed to a housing.SOLUTION: In an internal connector 34, a space for an adhesive 42 is provided by forming a through hole 43 using a hole 39. This makes it possible to absorb the variation in the application of the adhesive 42, thereby reducing the defect rate due to the protrusion of the adhesive 42 and the number of repairing steps. As a result, it is possible to prevent the protruding adhesive 42 from coming into contact with the tip of a terminal 35, and prevent an electrode for heat swaging from being interfered by the adhesive 42.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a motor control device.

  For example, an electric valve timing adjustment device (E-VCT (Variable Cam Timing)) includes a phase adjustment mechanism and a motor control device. The motor control device includes a motor and a drive device (hereinafter, referred to as an EDU (Electronic Driver Unit)). The motor and the EDU are electrically connected by a connector mounted on the EDU board.

  Since the connector is cantilevered by the EDU board and protrudes from the EDU board, it is violently shaken by the rotation of the engine or vibration during running. Therefore, in order to ensure the vibration resistance of the connector, the connector is bonded and fixed to the housing with, for example, a thermosetting adhesive (see Patent Document 1).

JP 2018-7417 A

  By the way, since the adhesive before thermosetting has a liquidity and fluidity, a holding portion surrounded by a wall portion is formed in a portion of the housing facing the connector, and the adhesive is applied to the holding portion. It is applied. Since the adhesive applied to the holding unit is held so as not to flow out, when the EDU board is assembled to the housing, the adhesive applied to the holding unit is bonded to the connector. When the adhesive is heated and hardened in that state, the connector can be adhesively fixed to the housing.

  Here, when the EDU board is assembled to the housing, the connector is designed to provide a slight gap between the connector and the housing so that the connector does not contact the housing and apply excessive force to the EDU board. are doing.

Due to such a structure, there are the following problems.
The application area of the adhesive, that is, the adhesion area to the connector, is important for vibration-proof design. May adhere to the connection portion with the electrode, and may come into contact with, for example, a heat caulking electrode.

  That is, even if the adhesive is applied to the holding unit by the dispenser by the target application amount, the adhesive amount varies around the target application amount, so that the application amount may be larger than the target application amount. In such a case, the adhesive against which the connector is pressed may protrude from the holding portion to the terminal, and a reworking process for that purpose is a problem. As a means for solving this problem, if the height of the wall of the holding portion is increased, it is possible to prevent the adhesive from protruding. However, since there is a demand to make the entire device as thin as possible, the wall cannot be raised. It is.

  On the other hand, if the amount of application is reduced, the bonding area to the connector is reduced. For this reason, if the connector vibrates violently due to the rotation of the engine or vibration during traveling, the winding of the motor may be disconnected.

  The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a connector for connecting a drive board and a winding of a motor to a housing by adhesive bonding while increasing an adhesive area to the connector. It is an object of the present invention to provide a motor control device capable of suppressing the protrusion of a motor to a connection portion with a winding of a motor.

According to the first aspect of the present invention, since the adhesive (42) can be filled in the through hole (43) provided in the connector (34), the supply amount of the adhesive (42) to the holding portion (41) can be reduced. Variations can be absorbed by the through holes (43), and the protrusion of the adhesive to the terminals (35) can be suppressed.
In addition, the adhesive (42) enters the through-hole (43), so that the adhesive shape becomes uneven and the anchor effect can be exhibited, so that the vibration resistance can be improved.

Longitudinal side view of the internal connector in the first embodiment Longitudinal sectional view schematically showing a motor control device Perspective view of motor control device and motor Top view of motor control device Top view of internal connector Top view of internal connector showing formation position of through hole (part 1) Plan view of internal connector showing formation position of through hole (part 2) Top view of internal connector showing formation position of through hole (part 3) Longitudinal side view of the internal connector in the second embodiment Longitudinal sectional view schematically showing an internal connector according to a third embodiment. Longitudinal sectional view schematically showing an internal connector according to a fourth embodiment.

Hereinafter, a plurality of embodiments will be described with reference to the drawings. In several embodiments, functionally and / or structurally corresponding parts are provided with the same reference signs.
(First embodiment)
A first embodiment applied to a valve timing adjusting device will be described with reference to FIGS.

  The valve timing adjusting device 1 shown in FIG. 2 is provided in a rotation transmission system for transmitting rotation of a crank from a crankshaft (not shown) of an internal combustion engine to a camshaft 2 in a vehicle. The camshaft 2 opens and closes an intake valve (not shown) according to rotation of a crank. The valve timing adjusting device 1 has a function of controlling the camshaft 2 to advance or retard the crankshaft rotation.

  The valve timing adjustment device 1 includes a phase adjustment mechanism 3 and a motor control device 4. The phase adjustment mechanism 3 is rotated by a chain (not shown) connected to the crank, and transmits the rotation to the camshaft 2 in a state where the rotation is advanced or retarded by the motor control device 4. The configuration of the valve timing adjusting device 1 is basically the same as the configuration disclosed in Japanese Patent Application Laid-Open No. 2015-203392 by the present applicant. Therefore, FIG. Detailed description is omitted.

The motor control device 4 will be described.
The motor control device 4 is an electromechanical integrated product including a motor 5 and a drive device (EDU: Electronic Driver Unit) 6, and is attached to a stationary part such as a chain case of an internal combustion engine.

  The motor 5 is a brushless permanent magnet type synchronous motor, and includes a motor housing 7, a base 8, bearings 9 and 10, a motor shaft 11, a rotor 12, a sensor magnet 13, and a stator 14, as shown in FIG. I have.

  The motor housing 7 is made of, for example, iron, and is formed in a flat container shape having a flange. The base 8 is made of, for example, aluminum, and is fixed so as to close the opening of the motor housing 7. The housing of the motor 5 is configured by the motor housing 7 and the base 8, and the motor 5 is configured by assembling various components therein.

  The distal end of the motor shaft 11 projects out of the motor housing 7 and is connected to the phase adjustment mechanism 3. Specifically, a hole 15 is formed at the tip of the motor shaft 11, and a pin 16 is inserted into the hole 15, so that a joint 17 is attached to the tip of the motor shaft 11. This joint 17 is for connecting the motor control device 4 to the phase adjusting mechanism 3 flexibly. An opening 18 is formed in the motor housing 7, and an annular seal 19 is attached to the opening 18, thereby waterproofing the inside of the motor 5.

The rotor 12 is provided integrally with the motor shaft 11, and includes a permanent magnet 20 which is a main component of the rotor magnetic flux, two fixed plates 21 and 22 for rectifying a magnetic flux generated by the permanent magnet 20, and a circumferential surface of the permanent magnet 20. And one or a plurality of permanent magnets 23 provided in the main body. The permanent magnet 23 has a function of assisting and rectifying the rotor magnetic flux.
The sensor magnet 13 is fixed to a surface of the rotor 12 facing the base 8, and is provided so that the polarity facing the base 8 switches at predetermined angles.

  The stator 14 is housed in the motor housing 7 in a positioned state, and has an annular stator core 24 having a plurality of teeth 24a protruding inward, and a stator winding wound around the teeth 24a via a resin bobbin 25. It consists of line 26. The stator windings 26 are provided corresponding to the U, V, and W phases of the motor 5, and are electrically connected to each other via a terminal 27 for forming a neutral point. The stator 14 generates a rotating magnetic field by supplying a driving current to the stator winding 26.

  The driving device 6 includes a cover 28 and an EDU substrate 29 (corresponding to a driving substrate) in addition to the base 8 described above. The cover 28 is made of, for example, iron, and the base 8 and the cover 28 constitute a housing of the driving device 6.

  The EDU board 29 is fixed to the base 8 with screws 30, as shown in FIG. A plurality of components constituting an inverter circuit for driving the motor 5 are mounted on the EDU board 29. Components include a MOSFET, a drive IC, a coil, a capacitor, and the like.

  On the back surface of the EDU substrate 29, a Hall element 31 is mounted as shown in FIG. A window 32 is formed in the base 8, and the hall element 31 is located in the window 32 and faces the sensor magnet 13. The Hall element 31 detects the rotational position of the sensor magnet 13 and outputs a detection signal to the drive IC.

  The drive IC detects the rotational position of the rotor 12 based on the detection signal of each Hall element 31. Further, the drive IC obtains a signal for instructing the rotation direction and the number of rotations of the motor 5 from an ECU (not shown), and generates and outputs a gate drive signal for each MOSFET based on the instruction signal and the rotational position. I do.

As shown in FIG. 4, an external connector 33 for connection to an ECU (not shown) and an internal connector 34 for connection to the motor 5 are mounted on the EDU board 29, as shown in FIG.
The external connector 33 faces the outside from the base 8, and outputs an instruction signal of the motor 5 output from an ECU (not shown) to the EDU board 29. Further, it outputs a diagnostic signal output from the EDU board 29 and a signal indicating the actual rotation speed and the actual rotation direction of the motor 5 to the ECU. Power is supplied to the EDU board 29 via the external connector 33.

  The internal connector 34 is formed by insert-molding three terminals 35 corresponding to three phases of an inverter circuit into a connector housing 36. As shown in FIG. 5, the base end 35a of the terminal 35 protrudes from the upper side in the figure, and the distal end 35b protrudes from the lower side in the figure. The internal connector 34 is cantilevered by the EDU board 29 by fixing the base end 35 a of the terminal 35 to the EDU board 29. A window 37 is formed in the base 8, and the tip 35 b side of the terminal 35 faces the motor 5 via the window 37. Each end 26a of the stator winding 26 of the motor 5 is heat caulked with the tip 35b of the terminal 35 while passing through the window 37. Thus, the three-phase output line of the inverter circuit and the stator winding 26 of the motor 5 are electrically connected.

  Here, a plurality of pit holes 38 are formed on the upper surface of the internal connector 34. In the present embodiment, the strength of the internal connector 34 is ensured by forming the hole 38 in the portion where the terminal 35 is located. A plurality of holes 39 are formed on the lower surface (corresponding to the contact surface) of the internal connector 34. The holes 39 correspond to bosses for supporting the terminals 35 in the mold during insert molding. In the present embodiment, the hole 39 is formed on the lower surface below the hole 38, but the hole 39 may be formed in a portion that does not correspond to the hole 38.

  As described above, the internal connector 34 is cantilevered by the EDU board 29 and is largely shaken by the rotation of the engine and the vibration during running. It is bonded and fixed with a silicone adhesive (hereinafter referred to as an adhesive) 42 of a type.

  Since the adhesive 42 before the thermosetting is liquid and has fluidity, the holding portion 41 surrounded by the wall 40 is formed on the base 8 so as to be depressed so that the adhesive 42 applied to the base 8 does not flow out. Then, the holding portion 41 is held by applying an adhesive 42. In this case, when the internal connector 34 is in contact with the base 8, an excessive force may act on the fixed portion of the internal connector 34 on the EDU board 29. It is designed so that a slight gap exists between the connector 34 and the holding portion 41.

  By the way, as described above, since the adhesive 42 before the thermosetting is liquid and has fluidity, even if the adhesive 42 is automatically applied to the holding portion 41 by the dispenser by the target application amount, the target application It is inevitable that the amount will vary around the volume. For this reason, when the applied amount of the adhesive 42 is larger than the target applied amount, the adhesive 42 pressed against the internal connector 34 may protrude from the holding portion 41 to the terminal 35 side. The process is a challenge. In this case, if the height of the wall 40 surrounding the holding portion 41 is increased, the adhesive 42 can be prevented from protruding, but the wall 40 cannot be raised from the current state due to the flattening of the entire device.

  For this reason, in the present embodiment, the adhesive 42 can be filled in the hole 39 corresponding to the terminal supporting stud formed on the lower surface of the internal connector 34. That is, when the adhesive 42 is filled in the hole 39, the adhesive 42 can be absorbed by that amount, so that the adhesive 42 can be prevented from protruding.

  However, when the internal connector 34 is in contact with the adhesive 42, the hole 39 becomes a closed space closed by the adhesive 42. Unable to enter part 39.

  Therefore, as shown in FIG. 1, a through-hole 43 is formed to connect the hole 39 and the hole 38 formed in the upper surface of the internal connector 34 in the vertical direction in the figure. That is, one opening 43a of the through hole 43 is the hole 39, and the other opening 43b is provided on the bottom surface of the hole 38 on the upper surface. As a result, the adhesive 42 smoothly enters the hole 39, so that the through-hole 43 can be filled with the adhesive 42 and absorbed. In this case, since the adhesive 42 before thermosetting has fluidity, the liquid level of the adhesive 42 filled in the through hole 43 is equal to the liquid level of the adhesive 42 held in the holding portion 41. It is almost the same. Therefore, the filling amount of the adhesive 42 can be increased by increasing the diameter of the hole 39.

  When the through hole 43 is formed in the internal connector 34 as described above, different effects can be expected depending on the position of the through hole 43 as follows. Note that the through hole 43 will be described as being able to be formed in a portion other than the portion corresponding to the hole 38.

  (1) As shown in FIG. 6, the through-hole 43 is disposed near the protruding portion of the adhesive 42, that is, in the vicinity of the portion facing the peripheral portion of the holding portion 41. According to such an arrangement, the effect of suppressing the protrusion of the adhesive 42 can be improved. In this case, since the adhesive 42 has a constant viscosity (for example, 50 mPa · s @ 25 ° C.), the liquid level of the adhesive 42 may not be completely horizontal. For this reason, the effect of suppressing the protrusion is higher when it is disposed near the protrusion.

  (2) As shown in FIG. 7, the through-hole 43 is disposed at a position close to the tip of the internal connector 34. According to such an arrangement, the vibration resistance of the internal connector 34 can be improved. In other words, since the run-out of the internal connector 34 due to the rotation of the engine and the vibration during traveling is larger as it is closer to the tip, the vibration resistance can be improved by generating an anchor effect by the adhesive 42 at the tip of the internal connector 34. .

  (3) As shown in FIG. 8, the through-hole 43 is arranged at a position close to the terminal 35 which is a connection portion with the winding of the motor 5. According to such an arrangement, the vibration resistance of the connection portion can be improved. The failure mode of the product due to the vibration of the internal connector 34 is disconnection of the winding of the connection portion. Therefore, by generating an anchor effect of the adhesive 42 in the vicinity thereof, the vibration resistance against a failure can be improved.

According to such an embodiment, the following effects can be produced.
In the internal connector 34, a through hole 43 is formed by using the hole 39 to provide a relief for the adhesive 42, so that a variation in the application of the adhesive 42 can be absorbed, and the adhesive 42 protrudes. And the number of rework steps can be reduced. As a result, it is possible to prevent the protruding adhesive 42 from coming into contact with the distal end portion 35b of the terminal 35, and to prevent the electrode for heat swaging from being interfered by the adhesive 42.
Since the amount of application can be increased by the amount of suppression of protrusion, improvement in vibration resistance can be expected.

  Since the contact shape of the adhesive 42 with the lower surface of the internal connector 34 is not a simple planar shape but an uneven shape, an anchor effect for restricting the displacement of the internal connector 34 can be expected, and vibration resistance can be improved.

By forming the through holes 43, it is possible to reduce the material cost of the internal connector 34 and the molding failure rate such as sink marks.
Since the adhesive 42 is applied to the holding section 41 in advance and the internal connector 34 is pressed against the holding section 41 to mechanically fix it, the whole can be relatively uniformly bonded.

Since the adhesive 42 is applied to the entire lower surface of the internal connector 34 in advance, it is easy to control the application of the adhesive 42 to the entire lower surface of the internal connector 34.
Since the through-hole 43 is formed by using the hole 39 already formed on the lower surface of the internal connector 34, it can be implemented without greatly changing the shape of the internal connector 34.

(Second Embodiment)
A second embodiment will be described with reference to FIG. The second embodiment is characterized in that a through-hole is formed by utilizing a stolen hole 38 formed on the upper surface of the internal connector 34.

  As shown in FIG. 9, a through hole 43 is formed in the bottom surface of the hole 38 formed in the upper surface of the internal connector 34. That is, one opening 43 a of the through hole 43 is located on the lower surface of the internal connector 34, and the other opening 43 b is located on the bottom surface of the hole 38. Thereby, since the through-hole 43 penetrates the internal connector 34 in the vertical direction in the figure, the adhesive 42 can be smoothly filled into the through-hole 43. As a result, the adhesive 42 against which the internal connector 34 is pressed can be absorbed.

According to such an embodiment, the following effects can be produced.
Since the through holes 43 are formed by using the stolen holes 38 formed on the upper surface of the internal connector 34, the adhesive 42 protruding from the holding portion 41 is provided to the through holes 43, as in the first embodiment. It becomes possible to absorb, and it can control that adhesive 42 protrudes from holding part 41.

Since the thermosetting is performed in a state where the adhesive 42 is filled in the through holes 43, the contact area of the adhesive 42 with the internal connector 34 can be increased, and the vibration resistance can be improved.
Since the through-hole 43 is formed by utilizing the hole 38 formed in the internal connector 34, the internal connector 34 can be implemented without largely changing the shape.

  Note that, similarly to the first embodiment, the hole 39 may be used as a through hole. In this case, since the number of the through holes 43 can be increased, the filling amount of the adhesive 42 into the through holes 43 can be increased.

(Third embodiment)
A third embodiment will be described with reference to FIG. The third embodiment is characterized in that, in each of the above embodiments, a chamfered portion is provided at a peripheral portion of one opening 43a of the through hole 43 formed on the bottom surface of the internal connector 34.

  Even if the adhesive 42 before the thermosetting is liquid, the viscosity is relatively higher than that of water, so that the cross-sectional shape of the peripheral portion of one opening 43a of the through hole 43 is a right angle as in the above embodiments. In the case of the shape, it is assumed that the peripheral portion of the through-hole 43 becomes a resistance, and the adhesive 42 does not easily enter the through-hole 43 smoothly.

  Therefore, in the present embodiment, as shown in FIG. 10, a chamfered portion 44 is formed on the periphery of one opening 43 a of the through hole 43 located on the lower surface side of the internal connector 34. In this case, when the adhesive 42 enters the through-hole 43, the one opening 43 a of the through-hole 43 gradually narrows from a wide state, so that the adhesive 42 smoothly goes into the through-hole 43 along the chamfered portion 44. Can be entered.

  Here, in order to exert the above-mentioned anchor effect, it is important that the adhesive 42 enters beyond the chamfered portion 44 as shown in FIG. 10. It is necessary to be equal to or more than the vertex of the chamfered portion 44. This is because, when the height of the wall portion 40 is less than the vertex of the chamfered portion 44, the liquid level of the adhesive 42 cannot exceed the chamfered portion 44 and a sufficient anchor effect cannot be exhibited. It is.

According to such an embodiment, the following effects can be produced.
Since the chamfered portion 44 is formed on the periphery of one opening 43a of the through hole 43 located on the lower surface of the internal connector 34, the filling property of the adhesive 42 into the through hole 43 can be further enhanced. In addition, the effect of suppressing the protrusion of the adhesive 42 can be further enhanced.
By improving the filling property of the adhesive 42 into the through-holes 43, it is possible to expect a more stable protrusion prevention effect and an effect of improving vibration resistance.

(Fourth embodiment)
A fourth embodiment will be described with reference to FIG. The fourth embodiment is characterized in that the method of supplying the adhesive 42 to the holding unit 41 is changed.

In each of the above-described embodiments, the internal connector 34 is pressed against the adhesive 42 in a state where the adhesive 42 has been applied to the holding portion 41 in advance. It is assumed that there may be cases where it cannot be demonstrated.
Therefore, in the present embodiment, a manufacturing process in which the internal connector 34 is assembled to the base 8 in advance and the adhesive 42 is injected from the through hole 43 is adopted.

  That is, as shown schematically in FIG. 11, when the adhesive 42 is injected from the other opening 43b of the through hole 43 of the internal connector 34, the adhesive 42 passes through the through hole 43 and is indicated by an arrow in the figure. As described above. In this case, the adhesive 42 is supplied to the holding portion 41 centering on the through-hole 43, so that the through-hole 43 is formed at a position where the adhesive force with the base 8 is required, so that the internal connector 34 is effectively applied to the base 8. Can be adhesively bonded.

  Further, since the adhesive 42 flows through the gap between the internal connector 34 and the holding portion 41 around the through hole 43, unlike the above-described embodiments, the internal connector 34 is pressed against the adhesive 42. In addition, it is possible to suppress the adhesive 42 from protruding from the holding portion 41.

  In other words, in the past, the adhesive was pressed by assembling the connector to the housing part to which the adhesive was applied, but since it is a step of injecting after assembling, the adhesive spreads due to the gravity of the adhesive and the capillary phenomenon In principle, the protrusion of the adhesive hardly occurs.

  According to such an embodiment, since the adhesive 42 is supplied to the holding portion 41 by injecting it into the through hole 43, the vibration resistance of the corresponding portion is improved by injecting the adhesive 42 into the portion where the adhesive is to be securely bonded. In addition to this, an improvement in the effect of suppressing the protrusion of the adhesive 42 can be expected.

  After the adhesive 42 injected into the through hole 43 is thermally cured, the adhesive 42 may be further injected and thermally cured. In this case, the area of adhesion to the internal connector 34 can be increased, so that further improvement in vibration resistance can be expected. Further, the filling amount of the adhesive 42 into the through-hole 43 can be increased, so that an improvement in the anchor effect can be expected.

(Other embodiments)
The valve timing adjustment device may be provided corresponding to the cam shaft for driving the exhaust valve, or may be provided corresponding to both cam shafts.

  A hole may be formed in the lower surface of the internal connector 34, and the hole may be used as a through hole. That is, in a state where the internal connector 34 is pressed against the adhesive 42, the hole is a closed space, and the adhesive 42 cannot enter the hole by receiving resistance of air in the closed space. Therefore, by forming a through-hole in the hole for the meat hole in the internal connector 34, the adhesive 42 can be smoothly filled in the hole for the meat hole.

The adhesive is not limited to the one-part thermosetting type, but may be a two-part or room temperature curing type.
The present invention may be applied to a motor control device other than the motor control device of the valve timing adjustment device.

  Although the present disclosure has been described in accordance with the embodiments, it is understood that the present disclosure is not limited to the embodiments and the structures. The present disclosure includes various modifications and modifications within the equivalent range. In addition, various combinations and forms, and other combinations and forms including only one element, more or less, are also included in the scope and spirit of the present disclosure.

  In the drawing, 4 is a motor control device, 5 is a motor, 7 is a motor housing (housing), 8 is a base (housing), 29 is an EDU board (drive board), 34 is an internal connector (connector), and 35 is a terminal. , 35a is a base end, 35b is a tip, 36 is a connector housing, 38 is a hole, 39 is a hole, 41 is a holding part, 42 is an adhesive, 43 is a through hole, 43a is one opening, 43b is the other opening, and 44 is a chamfer.

Claims (9)

A motor (5);
A housing (7, 8) for the motor;
A drive board (29) provided on the housing and driving the motor;
A holding portion (41) provided at a portion of the housing facing the drive substrate and holding the supplied liquid adhesive (42) so as not to flow out;
By fixing the base end (35a) of the terminal (35) to the drive board, the terminal (35a) is adhesively fixed to the housing by the adhesive while being cantilevered by the drive board, and the tip of the terminal A connector (34) for electrically connecting the drive board and the motor by connecting a winding of the motor to a portion (35b);
The connector is provided so as to penetrate therethrough, and one opening (43a) is located at a contact surface of the connector with the adhesive, and the other opening (43b) is located at a portion other than the contact surface. A hole (43);
Motor control device provided with.   The motor control device according to claim 1, wherein the one opening is a hole (39) formed on the contact surface of the housing (36) of the connector so as to correspond to a terminal supporting boss.   2. The motor control device according to claim 1, wherein either one of the one or the other opening is provided in a hole for a hole formed in a housing of the connector.   The motor control device according to any one of claims 1 to 3, wherein the one opening has a chamfered portion (44) provided at a peripheral portion thereof.   5. The motor control device according to claim 1, wherein the one opening is provided close to a portion facing a peripheral edge of the holding unit.   The motor control device according to claim 1, wherein the one opening is provided close to a tip of the connector.   The motor control device according to claim 1, wherein the one opening is provided near the terminal.   The holding portion is provided so as to be supplied by applying the adhesive at the time of assembling the product, and after the supply, the driving substrate is fixed to the housing, so that the adhesive is applied to the contact surface. The motor control device according to claim 1, wherein the motor control device is brought into contact with the motor control device.   The holding unit is provided so that the adhesive is injected into the through-hole in a state where the driving substrate is fixed to the housing when the product is assembled, and the adhesive is supplied to the holding unit. The motor control device according to claim 1, wherein the adhesive is brought into contact with the contact surface.

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