Shutter sequence switching device

Abstract

The present invention relates to a device for sequentially switching at least one first shutter (11) and at least one second shutter (12, 13), wherein the blades (2) of the shutters can be synchronously rotated by means of at least one coupling rod (6) to open and close the shutters, and the device comprises: an actuator (10) for generating a rotational movement of the blades at 80° to 90°; a coupling device for rotatably coupling the actuator to the blades of the first shutter; a slide rod (9), wherein the slide rod has a partially circular slide groove (92); and a transmission rod (8), wherein the actuator has an eccentric pin (102) parallel to the rotation axis (101) of the actuator, the pin is engaged in the partially circular slide groove of the slide rod, and the linear movement of the slide rod is transmitted to the coupling rod (6) of at least the second shutter.

Description

Technical Field

[0001] The invention relates to a shutter sequence switching device, which is particularly used to control the driving wind flowing into the engine compartment. The shutter is usually composed of a plurality of blades arranged one above the other, and the blades are rotatably supported in the lateral housing wall by pins in a housing open to the front and rear. When the shutter is closed, the blades overlap in a vertical position and prevent the driving wind from entering the engine compartment. When the shutter is open, the blades occupy a horizontal position, so that the driving wind can enter the engine compartment between the blades for cooling the engine. The position of the blade can be changed by an actuator arranged on one side of the shutter. Here, the actuator usually acts on one of the blades and the rotational movement of the driven blade is transmitted by means of a coupling rod, and an eccentric pin arranged parallel to the rotation axis of the blade is guided in the coupling rod. Background Art

[0002] In modern motor vehicles, different devices are covered by shutters that can be switched separately. For example, a main shutter is provided to cover the engine radiator, and at least one auxiliary shutter is provided for other devices arranged in the engine compartment, such as oil coolers, brakes, etc. In this case, according to the prior art, a separate actuator is usually used for each shutter.

[0003] DE 10 2011 055 394 A1 discloses a choke arrangement in which different choke elements can be controlled synchronously with great effort by only one drive. Summary of the invention

[0004] The object of the present invention is to provide a simple solution for the sequential / asynchronous switching of main and auxiliary roller blinds by means of only one actuator.

[0005] This object is achieved by the technical solution of the present invention.

[0006] The subject of the invention is therefore a first device for sequentially switching at least one first shutter and at least one second shutter, the blades of which can be moved in synchronous rotation by means of at least one coupling rod to open and close the shutters, the first device comprising: an actuator for generating a rotational movement of the blades by 80° to 90°; a coupling device for rotatably coupling the actuator to the blades of the first shutter;

[0007] A slotted rod having a partially circular slotted groove, an actuator having an eccentric pin parallel to the rotation axis of the actuator, the pin engaging in the partially circular slotted groove of the slotted rod, so that when the axis of the actuator rotates, the slotted rod is in a linear motion, which is converted into a rotational motion of the blades of the second blind. The eccentric pin is arranged on a crank disk connected to the actuator in a rotationally fixed manner.

[0008] In the case of a main roller shutter and an auxiliary roller shutter arranged one above the other, the slotted rod can simultaneously take over the task of the coupling rod by its vertical movement for converting the vertical movement into a rotational movement of the blades of the auxiliary roller shutter.

[0009] In the case of main shutters and auxiliary shutters arranged side by side or in the case of main shutters and auxiliary shutters of different widths, a transmission rod can be provided which is fixed in a position and can be rotatably fixed on the shutter housing, wherein the other end of the slot rod acts on a swing lever of the transmission rod and the transmission rod is connected to the coupling rod of at least the second shutter via a hinged lever.

[0010] The radius of the partial circle of the partially circular guide groove preferably corresponds to the distance between the eccentric pin and the rotation axis of the actuator and the partial circle can extend in an angular range of 80° to 350°, preferably in an angular range of 80° to 110°, particularly preferably approximately 90°.

[0011] Suitable actuators are, in particular, electrically driven stepper motors which are controlled by the motor control as a function of temperature data present in the motor control, such as the external temperature, cooling water temperature, oil temperature, etc., and optionally the travel speed.

[0012] If the first shutter is to be closed, the actuator is first connected to the driven blade of the first shutter via a coupling device, which can be designed as a magnetic coupling device. The rotational movement of the motor causes the shutter to close, wherein at the same time an eccentric pin of the actuator moves through the guide slot. If the pin reaches the end of the guide slot, the actuator is decoupled. In order to close the second shutter, the actuator is further rotated, thereby causing the guide slot rod to move linearly, which is transmitted via the transmission rod to the second shutter and the coupling rod assigned to the second shutter or directly causes the second shutter to close immediately afterwards. The shutter is opened by reversing the direction of rotation of the actuator.

[0013] If only the second roller shutter is to be closed, the actuator is decoupled right from the start.

[0014] Furthermore, the subject of the invention is a second device for sequentially switching at least one first and second Venetian blinds, the blades of which can be moved in a synchronously rotating manner by means of at least one coupling rod in order to open and close the Venetian blinds, the second device comprising: an actuator for generating a rotational movement of the blades by 80° to 90°; a guide rod having a partially circular guide, wherein the actuator has two eccentric pins parallel to the rotation axis of the actuator, the pins being offset circumferentially by 70° to 110°, wherein one of the pins engages in the partially circular guide of the guide rod, wherein the other end of the guide rod is formed integrally with the coupling rod or acts on a pivot lever of a transmission rod, which is coupled to the coupling rod of at least the second Venetian blind, wherein the coupling rod of the first Venetian blind has a guide groove complementary to the guide groove of the guide rod, into which a second pin of the actuator engages. The second pin can also be arranged on a crank disk connected to the actuator in a rotationally fixed manner.

[0015] In this second embodiment of the invention, the link of the coupling rod and the second eccentric pin take over the task of the coupling device of the first embodiment of the invention.

[0016] The radius of the two guide grooves corresponds to the distance between the eccentric pins assigned to the two guide grooves and the rotation axis of the actuator. Preferably, the two partially circular guide grooves extend in an angular range of 80° to 350°, particularly preferably in an angular range of 80° to 100°. However, it is not necessary for the angular ranges of the two guide grooves to be equal. For example, the partially circular groove of one guide groove can extend through 180°, while the partially circular groove of the other guide groove can extend through 90°.

[0017] The rotation angle range of the actuator preferably extends over an angle of 160° to 180°. The spacing angle between two eccentric pins of the actuator can be 70° to 110°, preferably 80° to 100°, particularly preferably approximately 90°. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The present invention is described in detail in the drawings. The same reference numerals in different drawings represent elements of the present invention with the same function.

[0019] Figure 1 A perspective overall view showing a shutter assembly according to the present invention in the case of a main shutter and a secondary shutter arranged side by side;

[0020] Figure 2 A corresponding view showing a main shutter and a secondary shutter arranged one above the other;

[0021] Figure 3 An enlarged, three-dimensional detail view showing the crank disk, the guide rod and the coupling rod;

[0022] Figure 4 Shows assembled Figure 2 The components shown in ;

[0023] Figure 5 An alternative embodiment of the slotted link rod and the coupling rod is shown;

[0024] Figure 6 Two different states of the interaction of the crank disk, the guide rod and the coupling rod are shown in a perspective view;

[0025] Figure 7 Shows five operating states of sequential switching of the blinds;

[0026] Figure 8 The five operating states of the shutter are shown in a very abstract manner;

[0027] Fig. 9 A possible shape of a partially circular chute is shown. DETAILED DESCRIPTION

[0028] according to Figure 1 , the shutter assembly 1 shown has, by way of example, a main shutter 11 and two auxiliary shutters 12 and 13, wherein the auxiliary shutters are arranged next to the main shutter. It is shown that the main shutter 11 is opened by means of a horizontally placed blade 2, and the auxiliary shutters are closed by means of a vertically placed blade 2. The blade 2 has a lateral pin 3, which is rotatably supported in the side wall of a shutter housing open at the front and rear, the shutter housing not shown. The side wall of the shutter housing is shown by a dotted line 4. Each blade has a laterally arranged pin 5, which is eccentric relative to the rotation axis of the corresponding blade, which cooperates with a coupling rod 6 or 7 that can move vertically and linearly and is synchronized with the rotation movement of the blade of the shutter. The assembly also has a transmission rod 8 with a rotation axis parallel to the rotation axis of the blade 2. The transmission rod is rotatably supported 81 in a fixed position on the housing of the shutter assembly. The transmission rod 8 is connected to the coupling rod 6 and the guide rod 9 via a pivot lever 82 or 83 connected to the transmission rod in a rotationally fixed manner. The length of the pivot lever can correspond to the eccentricity of the blade rotation pin 5 respectively assigned to the pivot lever. The guide rod 9 and the actuator 10 are also shown in the figure, and the actuator is preferably an electrically driven stepping motor.

[0029] Figure 2 An embodiment of the invention is shown in which the main shutter and the auxiliary shutter are arranged one above the other. The (upper) main shutter is open and the (lower) auxiliary shutter is closed. In the case of a substantially aligned arrangement of the pins 3 of the blades of the two shutters, a transmission rod is not required. The guide rod 9 can be designed integrally with the coupling rod 6 of the auxiliary shutter. If the shutters have different extension widths, a transmission rod with a pivot lever is required.

[0030] Figure 3 Specifically shown are the gate rod 9, the coupling rod 7 and the rotating shaft 101 which can be driven by the actuator 10. The shaft of the actuator has a crank disk 105 which is connected to the shaft 101 in a rotationally fixed manner and has two eccentric pins 102 and 103 arranged on the crank disk. The pins are circumferentially offset by 80° to 110° with respect to the rotation of the shaft 101. The gate rod 9 has a partially circular groove 92 ("gate"), into which the pin 102 engages after assembly.

[0031] The radius of the slot 92 corresponds to the distance between the pin 102 and the axis 101 of the crank disk. The slot rod 9 is preferably guided on the housing wall, so that the mobility of the slot rod is limited to a linear movement. The coupling rod 7 has a groove 72 opposite to the partially circular groove 92, which is curved complementary to the slot 92 and into which the pin 103 of the crank disk 105 fits after assembly. The eccentric pin 5 of the blade of the shutter 11 fits into the groove 74. The partially circular grooves 72 and 92 preferably extend over a circumferential angle range of 80° to 90°. In addition, a rotation angle limiting disk 104 can be arranged on the shaft 101 of the actuator in a rotationally fixed manner, which limits the rotation angle of the shaft to 160° to 180°.

[0032] Figure 4 Shown after assembly, Figure 2 The components shown in .

[0033] Figure 5 An alternative embodiment of the coupling rod 7 and the gate rod 9 is shown, in which the gates 72 and 92 are open at their ends 73, 93. This has assembly advantages in that the gate rod 9 and the gates of the coupling rod 7 can be suspended on the pins 102 and 103 of the crank disk 105. In addition, if one of the elements is defective for switching the blinds, for example the pins 3 and 5 no longer fit, then an on-board diagnosis (OBD) can be implemented in the load-dependent control of the actuator. The actuator continues to rotate beyond the gate, which is detected by the motor control and a corresponding warning message is issued to the driver. The stop for rotating the blades is arranged on the housing 4.

[0034] exist Figure 6 The positions of the pins 102 and 103 as black dots in the guide grooves 72 and 92 and the direction of rotation of the shaft 101 are shown in the two operating states B and B'. Figure 7In the operating state D), the pin 102 presses the guide rod 9 downward. The linear movement of the guide rod 9 causes the rotational movement of the transmission rod 8 through the swing lever 83, and the rotational movement is received by the coupling rod 6 of the auxiliary shutters 12 and 13 through the swing lever 82 and converted into the rotational movement of the blades through the eccentric pin 5 of the blades of the auxiliary shutters 12 and 13. The pin 103 moves in the guide groove 72 of the coupling rod 7, while the coupling rod does not move. In the operating state B", this operating state corresponds to the opposite direction of rotation. Figure 7 In the operating state B in FIG. 1 , the pin 103 presses the coupling rod 7 upwards, and the eccentric pin 5 of the blade of the main shutter 11 cooperates with the groove 74 of the coupling rod 7, and the movement of the coupling rod is converted into the rotational movement of the blade of the main shutter 11. At the same time, the pin 102 moves through the slide slot 92, while the slide slot rod 9 does not move, so that the auxiliary shutter remains in its position.

[0035] Figure 7 The relative positions of the slot 92 of the slot rod 9 and the slot 72 of the coupling rod 7 in five operating states A, B, C, D and E are shown, viewed in the direction of the rotation axis of the actuator. The dashed circle 105 represents the path of the pins 102 and 103. In operating state A, the main shutter and the auxiliary shutter are closed, for example (crankshaft position 0°). If the actuator now rotates the crank disk, the slot 72 and thus the coupling rod 7 move downward, causing the pin 102 to move through the slot 92 and the slot rod 9 does not move.

[0036] In operating state B, the following intermediate state is reached (crankshaft position 45°), in which the auxiliary shutter 11 is half open. In operating state C (crankshaft position 90°), the pin 102 reaches the end of the partially circular slide groove 92, and the auxiliary shutter is opened. As the crank disk continues to rotate, the slide groove 92 moves downward, whereby the auxiliary shutter is closed. In operating state D (crankshaft position 135°), the following intermediate state is reached, in which the auxiliary shutter is opened and the main shutter is half opened. In operating state E (crankshaft position 180°), the main shutter and the auxiliary shutter are finally opened. Closing of the shutters is achieved by reversing the direction of rotation of the crankshaft 105. Reference numerals 106 , 107 denote horizontal regions of the link which are preferably designed linearly and at a suitable angle relative to the linear mobility of the link rod and coupling rod in order to compensate for deviations of the circular movement of the pins 102 and 103 from the linear movement of the coupling rod 7 and link rod 9 .

[0037] Figure 8It is a very abstract view of the main and auxiliary shutters 11 and 12 and their open or closed position depending on the rotational angle position of the crankshaft 105 (0°, 45°, 90°, 135° and 180°) and the eccentric pins 102 and 103 arranged on the crankshaft at a fixed angle (here approximately 100°) and which engage in the slots 92 or 72 of the slot rod 9 or the coupling rod 7.

[0038] Fig. 9 Different possibilities for constructing the slide 92 or 72 are shown. Here, the slides 92 and 72 can be constructed completely differently. For example, the slide 201 can increase the rotation angle range around the axis 101 so that one or another shutter can be opened or closed first.

[0039] Since the main shutter covering the vehicle radiator is open in most driving situations of the motor vehicle, sequential switching of the shutters is usually sufficient. However, it is possible to allow reversal in accordance with the Figure 7 The rotation direction of the actuator in the operating condition A realizes the reversal of the sequential switching. It is only necessary to adjust the permissible rotation angle of the rotation angle limiting disk 104 accordingly. In addition, only one or another shutter can be selectively closed. Preferably, the two ends of the slide are provided with compensation areas 106.

[0040] It is not necessary for the radii of the guideway segments 72 and 92 to be equal. If different radii are selected, it is only necessary to select the spacing between the eccentric pins 102 and 103 assigned to the guideway and the rotation axis 101 accordingly. This makes it possible, for example, to extend the linear movement of the guideway lever 9 by selecting a larger radius for the guideway 92 of the guideway lever 9. It is also not necessary to make the pivot levers 82 and 83 ( Figure 1 ) are of equal length. If, for example, the swing lever 83 is selected to be shorter than the swing lever 82, the shorter linear movement of the slideway rod can cause the blades of the auxiliary shutter to rotate in a larger angle range through the transmission rod 8.

[0041] According to another embodiment of the present invention, the eccentric pin 103 ( Figure 2 ) can be replaced by a coupling device, and the shaft 101 acts directly on the swing axis 3 of the blades of the main shutter 11 when the coupling device is engaged.

[0042] After the main shutter is closed, the coupling device can be disengaged and the pin 102 reaches the other end of the slot 92 of the slot rod 9. After decoupling, the auxiliary shutters 12 and 13 can be closed as described by further rotation of the actuator and linear movement of the slot rod 9.

Claims

1. A device for sequentially switching at least one first shutter (11) and at least one second shutter (12, 13), wherein the blades (2) of the shutters can be moved in synchronous rotation by means of at least one coupling rod to open and close the shutters, the device comprising: An actuator (10) for causing the blade to rotate at an angle of 80° to 90°; A coupling device, used to rotatably couple the actuator to the blades of the first shutter (11); A slide slot rod (9), the slide slot rod having a partially circular slide slot (92); and Transmission rod (8); The actuator has an eccentric pin (102) parallel to the rotation axis (101) of the actuator, and the pin is engaged in a partially circular slide groove of the slide groove rod. It is characterized in that A transmission rod (8) is provided which is rotatably supported in a fixed position and has a pivot lever fixed to the transmission rod, wherein the slot rod (9) acts on a pivot lever (83) for rotating the transmission rod, and another of the pivot levers (82) acts on a coupling rod (6) of at least the second blind, so that the linear movement of the slot rod (9) can be transmitted to the coupling rod (6) of at least the second blind (12, 13) via the transmission rod.

2. A device for sequentially switching at least one first blind (11) and at least one second blind (12, 13), wherein: The blades (2) of the shutter can be moved in a synchronous rotation by means of at least one coupling rod assigned to the shutter to open and close the shutter. The device comprises: An actuator (10) for generating a rotational movement of the blade of 80° to 90°, wherein the actuator has two eccentric pins connected to the actuator in a rotationally fixed manner and parallel to the rotation axis (101) of the actuator; A slide slot rod (9), wherein the slide slot rod has a partially circular slide slot (92); One of the pins (102) fits into a partially circular slide groove (92) of the slide groove rod (9). The coupling rod (7) of the first blind (11) has a partially circular sliding groove (72) complementary to the sliding groove of the sliding groove rod, and the other pin (103) of the actuator engages in the sliding groove, thereby enabling the coupling rod (7) of the first blind (11) to be in a guided linear movement, and the linear movement of the sliding groove rod (9) can be transmitted to the coupling rod of the second blind (12), It is characterized in that The pin (102) and the further pin (103) are circumferentially offset by 70° to 110° relative to the rotation axis (101).

3. The device according to claim 1, wherein: The transmission rod (8) is fixed in a fixed position and rotatably fixed on the housing of the shutter assembly.

4. The device according to claim 2, wherein: The movement of the slot rod (9) is transmitted to the coupling rod (6) of the second shutter through the integral configuration of the slot rod (9) and the coupling rod (6) of the second shutter.

5. The device according to any one of claims 1 to 4, wherein: The radius of the slot (92) of the slotted link rod (9) corresponds to the distance between the pin (102) and the rotation axis (101) of the actuator.

6. The device according to any one of claims 2 to 4, wherein: The radius of the guide groove (72) of the coupling rod (7) of the first roller shutter (11) corresponds to the distance between the further pin (103) and the rotation axis (101) of the actuator.

7. The device according to any one of claims 1 to 4, wherein: The slot has, at least on one side, a compensating extension (106, 107) bent by 75° to 105° relative to the movement direction of the corresponding slot rod (9) and / or the coupling rod (7) of the first blind (11).

8. The device according to any one of claims 1 to 4, wherein: The sliding groove (92) of the sliding groove rod (9) and / or the sliding groove of the coupling rod (7) of the first shutter (11) are open on one side.

9. The device according to any one of claims 1 to 4, wherein: A rotation angle limiting disk (104) is arranged on the actuator shaft (101) in a rotationally fixed manner.

10. The device according to any one of claims 1 to 4, wherein: The slot (92) of the slot rod (9) is connected to an eccentric pin (102) assigned thereto, and the slot (72) of the coupling rod (7) of the first Venetian blind (11) is connected to an eccentric pin assigned thereto, so that the corresponding linear movements of the slot rod (9) and the coupling rod (7) of the first Venetian blind (11) are performed sequentially.

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