JP4276737B2 - Electrical equipment - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an electrical apparatus having a casing frame having a front surface side covered with a front revolving plate supported so as to be able to revolve around a first axis in a front region of the casing frame.
[0002]
[Prior art]
Electrical devices with built-in playback units for record carriers, such as car-mounted radio devices incorporating a cassette recorder or CD player, or navigation devices with a CD-ROM driving mechanism are already known. The electrical equipment can be equipped with a front swivel plate on the front side which has an opening for accommodating a record carrier such as a cassette or a CD and which can be swiveled to cover the opening. The swivelable front swivel plate has a large number of operation elements and, for example, on the front side of the front swivel plate facing the observer, particularly in a compact and compact car-mounted radio device incorporating a cassette part or CD part. A display device such as a liquid crystal display element can be accommodated. In the case of a known electrical device, the front swivel plate is swung to an open state by operating a corresponding key and being tensioned by a spring, but must be closed manually.
[0003]
[Problems to be solved by the invention]
The subject of this invention is enabling it to open and close the front revolving board which can be swiveled fully automatically.
[0004]
[Means for Solving the Problems]
The constituent means of the present invention for solving the above-mentioned problems is provided with at least one lever supported so as to be pivotable about a first axis, and the first terminal section of the lever is located on the front side of the casing frame. The second end section of the lever is operatively connected to an adjustment device arranged on the casing frame and adjustable by a drive motor, the lever being connected to a rotary joint positioned in the region, The adjusting device can be pivoted about the first axis within a predetermined angle range, and one gear can be rotated on the lever between the first terminal section and the second terminal section of the lever. The gear is rotatable about a second axis parallel to the first axis, and the first shaft in the front side region of the casing frame. A first gear segment with inner teeth extending concentrically with respect to the casing frame is disposed at a fixed position on the casing frame, and a tooth row of the first gear segment faces toward the first axis, A second gear segment with external teeth extending concentrically with respect to the first axis is fixed to the inner surface side of the first gear, and the tooth row of the second gear segment faces away from the first axis. And the gear pivotally supported by the lever meshes with the first gear segment and simultaneously with the second gear segment so that the gear is stationary when the lever pivots about the first axis. At the same time, the second gear segment fixed to the front swivel plate is rotated about the first axis, and as a result, the first gear is centered on the first axis. There the turning plate in that so as to pivot.
[0005]
【The invention's effect】
Based on the configuration of the invention, it is achieved that the front swivel plate is automatically closed after a specified waiting time for safety reasons. Due to the special configuration of the swivel mechanism, the appearance of the electric device is not changed inconveniently. Due to its compact and miniaturized structure, the swivel mechanism saves the required space for the electric device and at the same time enables reliable driving of the front swivel plate when opening and closing. Even if the turning angle of the lever is smaller than 90 °, the gear arranged on the lever meshes with the first gear segment arranged on the casing frame and the second gear segment arranged on the front turning plate, so that the front turning It is advantageously achieved that the plate is swiveled more than 90 °. The dependent relationship between the turning angle of the front turning plate and the turning angle of the lever can be easily determined by the gear ratio of the gear transmission comprising the gear and both gear segments.
[0006]
Advantageous configurations and improvements of the invention are made possible by the configuration means described in the second and subsequent claims. By combining the lever and the crank transmission, it is achieved that the turning speed of the front swivel plate is advantageously gradually reduced slightly before each end position of the front swivel plate when opening and closing. By this means, the electric element and the electronic element provided in the front turning plate and the liquid crystal display element provided along the front turning plate in some cases are protected. Furthermore, the contact noise of the front turning plate when contacting the casing frame of the electric equipment can be avoided by the means. Since the front turning plate is supported by the casing frame at each end position of the front turning plate at the time of opening and closing, the force acting from the outside is not transmitted to the adjusting device and the drive motor.
[0007]
The crank arm is connected to the lever via a slider guide specially provided at the second end of the lever, and a crank pin of the crank arm that is slidably supported by engagement with the slider guide. This advantageously achieves the longest lever arm even in the case of the minimum working force of the crank. As a result, the revolving motion of the front revolving plate is performed particularly uniformly.
[0008]
Furthermore, the adjusting device connected to the crank has a drive gear with external teeth that is driven from the drive motor via a worm gear to drive the crank, and the drive gear is frictionally connected via a slip clutch. Advantageously, it is connected to the crank. By means of the slip clutch, it is advantageously eliminated that a finger is tightened between the front swivel plate and the casing frame, and the transmission device of the adjusting device is not damaged when the front swivel plate is manually operated (opened / closed). . Manual closing of the front swivel plate in the open state is particularly facilitated by forming the slip clutch by a coil spring that is crimped onto the shaft neck of the crank and fixedly coupling one end of the coil spring to the drive gear. . As a result, different slip moments are generated according to the rotation direction of the crank and the drive gear (in the winding winding direction or in the opposite direction). In that case, the winding direction of the coil spring is selected so that a relatively small slip moment acts when the front swivel plate is manually closed, whereas a relatively large slip moment acts when the motor type is closed. . This allows the front swivel plate to be easily closed manually, and in the case of a motorized closure, there can be a slip moment large enough to securely close the front swivel plate. become. Further advantageously, the crank, the coil spring and the drive gear form one preassembled component unit that can be easily positioned on the casing frame.
[0009]
When the front swivel plate is closed, the angle formed between the lever and the crank arm is the rotational moment transmitted from the lever to the crank when the rotation moment acts on the front swivel plate from the outside. Designed to be smaller than the self-locking action (resulting from the friction action acting between the slider guide and the crank pin of the crank and the slip moment of the slip clutch) acting against the rotational moment at The closed front swivel plate advantageously abuts against the casing frame without chattering, and the front swirl plate does not open even when vibrations are applied or other forces are induced by acceleration of the electrical equipment. When the front swivel plate is open, the angle formed by the lever and the crank arm is determined by the self-binding that the rotational moment transmitted from the lever to the crank acts against the rotational moment when the front swivel plate is manually closed. It is designed to be larger than the action. This allows a manual or motorized closing operation to be released by lifting the front swivel plate.
[0010]
Furthermore, a first switch that is actuated by the lever or the crank arm before the lever or crank arm reaches its end position when the front revolving plate is opened is provided on the casing frame, and when the front revolving plate is closed. Advantageously, a second switch is provided on the casing frame that is actuated by the lever or crank arm before the lever or crank arm reaches the other end position. By means of both switches, the drive motor acting on the adjusting device can be controlled, so that the drive motor is shut off when it reaches each end position or just before that. By specially configuring both the switches as swing arm lever type switches, it becomes possible to automatically connect the drive motor by manually closing the front turning plate.
[0011]
In addition, the center of gravity of the front turning plate is advantageously positioned higher than the turning axis formed by the first axis. This is because, in such a configuration, the gravity of the front turning plate assists the turning motion of the front turning plate when the front turning plate is opened. This is particularly because a relatively small slip moment of the slip clutch acts at the final stage of movement when the front revolving plate is motorized.
[0012]
Further, it is advantageous that one spring member for assisting the turning motion of the front turning plate at the time of opening acts between the front turning plate and the casing frame. This spring member provides uniform opening and closing of the front swivel plate and avoids chattering due to the presence of gear play. With this spring member, it is possible to make the sum of the opening moments of the front swivel plate without the drive motor larger than the sum of the braking moment or the return rotation moment caused by the frictional action or the operation of the switch. Furthermore, the spring member can also be used to cause the motor to act as a brake when the front swivel plate is opened and to serve only a specific opening movement.
[0013]
DETAILED DESCRIPTION OF THE INVENTION
Next, embodiments of the present invention will be described in detail with reference to the drawings.
[0014]
In the cross-sectional view of FIG. 1, an on-vehicle radio device with an operating mechanism for a part of an electrical device, for example a record carrier such as a CD or a cassette, is illustrated. The electrical device has a casing frame 1 to which various components of the electrical device are attached. The casing frame 1 can be composed of a part or a plurality of parts and has a front side 2 on which an opening 4 for inserting a record carrier into a record carrier accommodating part of a reproduction unit (see FIG. 5) is arranged. The casing frame 1 is formed in a substantially rectangular parallelepiped shape in the front region thereof, and has a frame portion 3 for attaching various constituent groups of the electrical equipment in the rear region thereof. Further, as shown in FIGS. 1 and 5, a front turning plate 5 is supported on the front side 2 of the casing frame 1 so as to be turnable about the first axis 7. The front swivel plate 5 has a front side 21 facing the observer in a closed state of the front swivel plate, and an inner surface side 22 positioned facing the front side, and the inner surface side is in a closed state. The front side 2 and the opening 4 of the casing frame 1 are covered. In particular, as can be seen from FIG. 5, a liquid crystal display element 78 is arranged along the front side 21 of the front turning plate 5. A printed wiring board 75 equipped with electrical elements and / or electronic elements 76 is arranged inside the front turning board 5.
[0015]
As best seen in FIG. 1, a lever 10 is supported on the casing frame 1 so as to be pivotable about the first axis 7. The lever 10 has a rotary joint in the first end section 11 for this pivotal support, and the rotary joint protrudes perpendicularly from the lever 10 but is not shown in the figure, and is relative to the first axis 7. The bearing pins are rotatably supported in the bearing bush of the casing frame 1. A bearing bush (not shown) of the casing frame 1 is disposed on a leg piece 6 that projects from the front side 2 of the casing frame. Further, the bearing pin of the lever 10 has a cylindrical notch, and one of the two bearing pins provided on the front turning plate 5 is also in relation to the first axis 7 in the notch. They are arranged concentrically. Of course, the lever 10 and the rotary joint of the front swivel plate 5 can also be configured differently. What is important in this case is that the front turning plate 5 and the lever 10 are supported so as to be turnable about the first axis 7, that is, the same axis. Further, as can be seen from FIG. 1, the first terminal section 11 of the lever 10 and the second terminal section 12 of the lever 10 which is separated from the front side 2 are introduced into the apparatus, and will be described in detail later. Are operatively coupled to the adjusting devices 30, 40, 50. Further, as can be seen from FIG. 5, the casing frame 1 has a first stopper 64 for bringing the front swivel plate 5 into contact in an open state and a second stopper 65 for bringing the front swivel plate 5 into contact in a closed state. is doing. The front swivel plate 5 is divided into sections disposed on the inner surface side 22 of the front swivel plate 5 and sections disposed above and below the first axis 7 in the closed state. , 65 abuts. As shown in FIG. 5, the pin 66 protruding from the inner surface side 22 of the front turning plate 5 contacts the first stopper 64 in the opened state. In the closed state, the front turning plate 5 abuts on the second stopper 65 with the upper edge of the inner surface side 22, and the second stopper is formed in the upper area of the front surface side 2 of the casing frame 1. The first stopper 64 and the second stopper 65 define the turning angle range of the front turning plate 5 supported on the casing frame 1.
[0016]
As can be seen from FIG. 1, the lever 10 has a bearing pin 16 extending between the first end section 11 and the second end section 12 and extending parallel to the first axis 7. 15 is rotatably supported. The center axis of the bearing pin 16 forms a second axis 16 that is parallel to the first axis, and the gear 15 is rotatably supported about the second axis. Further, a first gear segment 9 with internal teeth is provided on the front side of the casing frame 1, and the tooth row of the first gear segment is disposed concentrically with respect to the first axis 7. The individual teeth of the first gear segment 9 are oriented radially with respect to the first axis 7. Further, a second gear segment 24 with external teeth is arranged on the inner surface side 22 of the front turning plate 5, and the tooth row of the second gear segment is also arranged concentrically with respect to the first axis 7. Yes. The individual teeth of the second gear segment 24 are oriented in the radial direction away from the first axis 7. The gear 15 meshes with the first gear segment 9 and simultaneously meshes with the second gear segment 24 in the form of a planetary gear set. In this case, the second gear segment 24 substantially forms a sun gear of a planetary gear set, whereas the first gear segment 9 forms part of a circulating gear and the gear 15 forms a movable planetary gear. . When the lever 10 turns, the gear 15 meshes with the first gear segment 9 and rolls, thereby driving the second gear segment 24 of the front turning plate 5, thereby turning the front turning plate 5. The turning angle of the front turning plate 5 is set by the gear ratio of the transmission including the gear 15 and the first and second gear segments 9 and 24. For example, when the turning angle of the lever 10 is 40 °, the front turning plate 5 is Turn 90 °. Of course, another angle ratio can be set. The front swivel plate 5 and the casing frame 1 can be manufactured as a pressure cast part with a small dimensional deviation together with the associated bearing pin, so that the cooperation between the first and second gear segments 9 and 24 and the gear 15 is optimal. Can be set.
[0017]
As further shown in FIG. 1, the lever 10 is operatively coupled to the adjustment device by its second end section 12. For this purpose, the second end section 12 of the lever 10 has a slider guide 17 which extends radially with respect to the first axis 7 and has an undercut edge 18. It is configured as a longitudinal groove. Since the end of the longitudinal groove that is away from the first terminal section 11 of the lever 10 is open, the coupling member 36 of the adjusting device formed corresponding to the longitudinal groove is inserted into the longitudinal groove at this open portion. Is possible. In particular, the adjusting device comprises a crank 30 as shown in FIG. 4, which has a shaft neck 32 and a crank arm 31 projecting vertically from the shaft neck. The shaft neck 32 forms a hollow cylindrical body having an inner peripheral wall and an outer peripheral wall 34, and is fitted on a bearing pin 48 with the inner peripheral wall. The bearing pin 48 is disposed concentrically on a third axis 55 parallel to the first axis 7 and is fixedly coupled to the frame portion 3 of the casing frame 1. By supporting the shaft neck 32 on the outer periphery of the bearing pin 48, a rotary joint for rotating the crank 30 about the third axis 55 is formed. A cylindrical disk 35 that extends radially from the shaft neck 32 and extends concentrically with respect to the third axis 55 is provided at the end of the shaft neck 32 closer to the crank arm 31. The crank arm 31 has a coupling member 36 at an end portion 33 which is away from the shaft neck 32. The coupling member 36 forms a crankpin 36 that extends perpendicularly from the crank arm 31 in parallel to the third axis 55, and the crankpin has one circular shape at an end 37 that extends from the crank arm 31. A groove 38 is provided. The crank pin 36 is supported by the end portion 37 so as to be slidable and rotatable in the slider guide 17 of the lever 10, that is, in the longitudinal groove. Further, as shown in FIG. 1, the crank pin 36 of the crank 30 moves in the slider guide 52 provided in the frame portion of the casing frame 1 when the crank 30 rotates about the third axis 55. Furthermore, the adjusting device has a drive gear 40 with external teeth shown in FIG. 4, and this drive gear is also supported rotatably about the third axis 55. The drive gear 40 is formed in a pot shape and has a side wall 41 and a cylindrical wall 42 extending axially from the side wall, and the cylindrical wall surrounds the inner chamber 46. The tooth row 45 is provided on the outer wall of the cylindrical wall 42. The side wall 41 of the drive gear 40 has a circular opening that is restricted by a flange 44 that engages in a circular groove 49 in the bearing pin 48. Since the open end of the cylindrical wall 42, which is away from the flange 44, is fitted over the outer periphery of the cylindrical disk 35, a closed storage chamber is formed by the pot-shaped inner chamber 46 and the cylindrical disk 35. A slip clutch 60 is disposed in the storage chamber. The drive gear 40 is supported so as to be rotatable about a third axis 55 along the bearing pin 48 and the cylindrical disk 35 of the crank 30. The slip clutch 60 is fitted on the outer peripheral wall 34 of the shaft neck 32 of the crank 30. Since the inner diameter of the winding 63 of the coil spring 60 is designed to be smaller than the outer diameter of the shaft neck 32 in the unloaded state of the coil spring 60, the winding 63 is attached to the shaft neck 32 by the preload when the winding 63 is fitted over the shaft neck 32. The outer peripheral wall 34 of the shaft neck 32 is compressed by a radial force with respect to the third axis 55 in contact with the outer peripheral wall 34. The coil spring 60 acts as a so-called winding brake by the friction induced based on this. The first end 61 of the coil spring 60 is positioned radially outward with respect to the third axis 55 and positioned on the side wall 41. For this positioning, although not shown in FIG. 4, the two jaws integrally formed on the side wall 41 finally hug the first end 60 of the coil spring 60. The important point here is that the first end 61 of the coil spring 60 rotates together when the drive gear 40 rotates. A component group consisting of a coil spring, a crank, a bearing pin and a drive gear can be assembled in advance, and is fixed to the lever 10 and the casing frame 1 after the assembly. Further, as can be inferred from FIG. 1, the tooth row 45 of the drive gear 40 meshes with a worm gear 50 that is rotatably supported by the frame portion 3 of the casing frame 1. The drive gear 40 and the worm gear 50 form a worm gear device. The worm gear 50 itself is connected to the drive motor through a gear stage not shown.
[0018]
Further, as shown in FIG. 3, the first switch 68 and the second switch 69 constituting the swing arm lever type switch are fixed to the frame portion 3, and both switches can be operated by the lever 10. The first and second switches 68 and 69 are electrically connected to the drive motor via electrical or electronic delay elements. Further, as can be seen from FIG. 5, a spring member configured as a tension spring 70 is provided in the illustrated embodiment. One end of the tension spring 70 is engaged with the lever 10, and the other end is fixed to the frame portion 3 of the casing frame 1. The tension spring 70 opposes the turning motion of the lever 10 when the front turning plate 5 is closed, and in short, is in a tensioned state when the front turning plate 5 is closed. The tension spring 70 is designed such that the sum of the opening moments of the front swivel plate is larger than the sum of the braking moment or the return rotation moment. Further, as shown in FIG. 5, a protective flap 26 is rotatably supported on the inner surface side 22 of the front turning plate 5. The protective flap 26 is supported at one end thereof so as to be pivotable about a fourth axis 28 extending parallel to the first axis 7, and the other end of the protective flap 26 is illustrated. It slides along the receding section (section shifted toward the heel) 27 on the front side 2 which is brought into contact with the omitted spring. When the front revolving plate is opened by a motor, the revolving motion of the front revolving plate 5 is assisted by the spring of the protective flap 26, the tension spring 70, and the gravity of the front revolving plate 5.
[0019]
By the way, when it is going to open | release the front turning board 5 in a closed state (FIG. 2), the drive motor which drives the worm gear 50 is turned on via the switch provided in the front side 2 of the electric equipment. The drive gear 40 is rotated by the worm gear 50, and the crank arm 31 of the crank 30 is also rotated toward the left hand as seen in FIG. The crank arm 30 that rotates toward the left hand exerts a rotational moment on the lever 10 via the coupling member, that is, the crank pin 36. Therefore, the lever 10 is centered on the first axis 7 as seen in FIG. Turned toward. As a result, the gear 15 rolls along the first gear segment 9 and rotates toward the right hand about the second axis 16. The gear 16 itself that rotates toward the right hand rotates the second gear segment 24 toward the left hand about the first axis 7, so that the front turning plate 5 rotates to the position shown in FIG. 1. In the end, it turns to the position shown in FIG. By the way, before the pin 66 of the front turning plate 5 comes into contact with the first stopper 64, the first switch 68 (FIG. 3) is operated by the lever 10 and the drive motor is interrupted for a long time. When the front turning plate 5 is opened, the first end 61 (FIG. 4) of the coil spring 60 is rotated in the direction opposite to the winding direction of the coil spring 60 by the rotation of the drive gear 40. As a result, the tightening pressure of the winding 63 with respect to the outer peripheral wall 34 is gradually reduced from a strong initial pressure, so that the coil spring 60 acting as a friction clutch surrounds the shaft neck 32 while gradually relaxing. The pulling force of the tension spring 70 and the gravity of the front swivel plate 5 assist the slip clutch in the final movement stage, so that a reliable opening of the front swivel plate can be obtained. When the front swivel plate 5 comes into contact with the first stopper 64 (since the shaft neck 32 can no longer rotate), the winding 63 immediately slides along the outer peripheral wall 34 of the shaft neck 32 that is stopped. become. That is, the slip clutch slips idle. Therefore, damage to the turning mechanism when the front turning plate reaches the end position can be avoided.
[0020]
When the front revolving plate 5 is closed by a motor, the drive gear 30 rotates toward the right hand as seen in FIG. 3 and the coil spring 60 is moved in the winding direction of the coil spring 60 by the interlocking of the first end 61 thereof. Be loaded. This causes one winding to gradually contact each other along the shaft neck 32 toward the other winding, and the winding 63 gradually contracts around the shaft neck 32. The slip clutch acts and the coil spring 60 rotates the shaft neck 32 toward the right hand as viewed in FIG. As a result, the crank arm 31 is turned toward the right hand, and the lever 10 is turned toward the right hand as viewed in FIG. 3 about the first axis 7. When the lever 10 turns to the right hand, the front turning plate 5 is finally closed via a gear transmission composed of the gear segments 9 and 24 and the gear 15. The lever 10 actuates the second switch 69 immediately before the front turning plate reaches the second stopper 65, whereby the drive motor is delayed and cut off so that the front turning plate 5 reaches the closed end position reliably. Is done. In the closed position of the front swivel plate shown in FIG. 2, the maximum slip moment of the slip clutch finally acts. Nevertheless, slip slip of the slip clutch is possible even when the drive motor is still rotating after the front turning plate 5 has already reached the second stopper 65. The magnitude of the effective slip moment of the coil spring 60 can be optimally adapted to the requirements by the spring tension, the number of windings and the winding diameter of the coil spring. When the front turning plate 5 is open, a relatively small slip moment of the slip clutch is acting.
[0021]
In FIG. 3, when the front turning plate 5 is manually closed, the lever 10 is turned toward the right hand by configuring the slip clutch to be relatively weak. Next, the shaft neck 32 is also rotated toward the right hand via the crank arm 31. However, the effective slip moment of the coil spring 60 is relatively weak, and the second end 62 of the coil spring 60 is not fixedly coupled to the crank, but rather slides along the cylindrical disk 35 so that the neck 32 Only slips between the windings 63, and the slip clutch does not act. Therefore, damage to the gear transmission is avoided. When the front swivel plate is lifted manually, the lever 10 actuates the first switch 68 again, whereby the drive motor is connected, and the front swivel plate is moved by the motor to the closed end position of the front swivel plate.
[0022]
As can be further understood from FIGS. 1 and 3, the lever 10 and the crank arm 31 form an angle with each other at the open end position of the front turning plate 5, and this angle acts on the crank arm 31 from the lever 10. , The rotational force perpendicular to the lever axis 13 is designed to form an angle α with respect to the crank arm 31, the angle α being at least large enough to overcome the self-locking action when manually closed. Yes, i.e., the minimum angle at which the self-trapping action is overcome _μ If α> α _μ It is. When the front swivel plate 5 is in the open state, this is because the angle between the lever 10 and the crank arm 31 is the sum of the friction moment generated in the slider guide 17 and all the friction moments of the crank support. 10 is selected to be smaller than the moment exerted on the crank 30 by 10, thus enabling manual operation of the front swivel plate 5. On the other hand, as shown in FIG. 2, at the closed end position of the front turning plate 5, the angle α between the rotational force acting on the crank 30 from the lever 10 and the crank arm 31 does not overcome the self-locking action. Small, ie α <α _μ Has been chosen. This has the advantage that the closed front swivel plate 5 cannot be opened by a vibration load. The self-locking action in the closed state of the front turning plate 5 is obtained by the angle formed between the slider guide 17 and the crank arm 31, the friction generated in the slider guide 17 and the slip moment of the slip clutch.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view of a casing frame of an electric device shown in a half-opened state in which a front swivel plate is not completely opened or closed.
2 is a cross-sectional view of the electrical device of FIG. 1 with the front swivel plate completely closed.
3 is a cross-sectional view of the electrical device of FIG. 1 showing the positions of the first and second switches with the front swivel plate fully open.
FIG. 4 is a cross-sectional view of an adjusting device portion provided with a slip clutch.
FIG. 5 is another cross-sectional view of the electrical device shown with the front swivel plate fully open.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 casing frame, 2 front side of casing frame, 3 frame part, 4 opening, 5 front turning plate, 6 leg piece, 7 1st axis, 9 1st gear segment with internal teeth, 10 lever, 11 1st termination | terminus division , 12 Second terminal section, 13 Lever axis, 15 Gear, 16 Bearing pin or second axis, 17 Slider guide, 18 Undercut edge, 21 Front side of front revolving plate, 22 Front revolving plate Inner side, 24 second gear segment with external teeth, 26 protective flap, 27 reverse section, 28 4th axis, 30 crank, 31 crank arm, 32 shaft neck, 33 end, 34 outer peripheral wall, 35 cylindrical disk, 36 coupling member or crank pin, 37 end, 38 circular groove, 40 drive gear with external teeth, 41 side wall, 42 cylindrical wall, 44 flange, 45 Dentition, 46 inner chamber, 48 bearing pin, 49 circular groove, 50 worm gear, 52 slider guide, 55 third axis, 60 slip clutch or coil spring, 61 first end, 62 second end, 63 winding 64 first stopper, 65 second stopper, 66 pin, 68 first switch, 69 second switch, 70 tension spring, 75 printed wiring board, 76 electric / electronic element, 78 liquid crystal display element

Claims (20)

Electricity of the type comprising a casing frame (1) having a front side covered by a front swivel plate (5) pivotably supported about a first axis (7) in a front side region of the casing frame (1) In the equipment
At least one lever (10) supported so as to be pivotable about a first axis (7) is provided, the first end section (11) of the lever being located in the front side region of the casing frame (1) And an adjusting device (30, 40, 50) which is connected to the rotary joint positioned at the top and is arranged on the casing frame (1) and can be adjusted by a drive motor. And the lever (10) is pivotable about the first axis (7) within a predetermined angular range by the adjusting device, and the lever (10) has a first terminal end. A gear (15) is rotatably supported on the lever between the section (11) and the second terminal section (12), and the gear (15) is connected to the first axis (7). Parallel second axis A first gear segment (9) with internal teeth that is rotatable about (16) and extends concentrically with respect to the first axis (7) in the front side region of the casing frame (1); It is arranged in a fixed manner on the casing frame (1), the tooth row of the first gear segment faces toward the first axis (7), and the inner surface side (22) of the front swivel plate (5) A second gear segment (24) with external teeth extending concentrically with respect to the first axis (7) is fixed, and a tooth row of the second gear segment is separated from the first axis (7). And the gear (15) pivotally supported by the lever (10) meshes with the first gear segment (9) and simultaneously meshes with the second gear segment (24), The lever (10) centered on one axis (7) At the time of turning, the gear (15) meshes with the stationary first gear segment (9) to roll, and at the same time, the second gear segment (24) fixed to the front turning plate (5) An electrical apparatus characterized in that the front turning plate (5) is turned around the first axis (7) and, consequently, the front turning plate (5) is turned around the first axis (FIG. 1). The adjusting device (30, 40, 50) has a crank (30) supported so as to be pivotable about a third axis (55) parallel to the first axis (7), the crank (30) Is composed of a shaft neck (32) supported on the third axis (55) and a crank arm (31) extending from the shaft neck (32), and further away from the shaft neck (32) The crank arm end (33) has a coupling member (36) projecting parallel to the third axis (55), the coupling member (36) being the second end of the lever (10). Electrical device according to claim 1, wherein the electrical device is engaged in a slider guide (17) formed in the section (12) (Fig. 4). A slider guide (17) is formed in the lever (10) as a longitudinal groove, which is in the second terminal section (12) of the lever (10) in the region of the adjusting device (30, 40, 50). The electrical device according to claim 2, extending radially along the lever with respect to the first axis (7) (FIG. 1). The longitudinal groove (17) is configured as a molding groove having an undercut portion (18) when viewed in cross section, and the coupling member (36) is a crank arm (parallel to the third axis (55)). 31) is formed as a crank pin protruding from the crank arm (31), and the end of the crank pin (36) that is separated from the crank arm (31) is complementary to the cross section of the vertical groove (17). The electric device according to claim 3, wherein the electric device is formed and is slidably supported in the longitudinal groove (17) (FIGS. 2 and 4). The casing frame (1) is formed with a first stopper (64) for contacting the front revolving plate (5) in an open state, and the front revolving plate (5) is provided on the casing frame (1). The electrical device according to any one of claims 2 to 4, wherein a second stopper (65) for contact in the closed state is formed (Fig. 5). The adjusting device (30, 40, 50) has a drive gear (40) with external teeth for driving the crank (30), and the drive gear is rotatably supported around the third axis (55). The electric device according to claim 2, wherein the electric device is connected to the crank (30) in a frictional connection manner via a sliding clutch (60) (Fig. 4). The drive gear (40) meshes with the worm gear (50) to form a worm gear device, and the worm gear (50) is rotatably supported on the casing frame (1) and coupled to the drive motor. The electrical device according to claim 6. A first switch (5) operated by the lever (10) or the crank arm (31) before reaching the terminal position where the front turning plate (5) contacts the first stopper (64) when the front turning plate (5) is opened. 68) is provided on the casing frame (1), and when the front swivel plate (5) is closed, before the front swivel plate (5) reaches the end position where it abuts against the second stopper (65), the lever ( 10. The electric device according to claim 5, wherein a second switch (69) operated by 10) or the crank arm (31) is provided on the casing frame (1) (FIG. 3). The electrical device according to claim 8, wherein the first switch (68) and the second switch (69) are configured as swing arm lever type switches. The first switch (68) and the second switch (69) are conductively connected to the drive motor, and the drive motor is connected or disconnected when the first switch or the second switch is activated. The electrical equipment described. The first switch (68) and the second switch (69) are each conductively connected to the drive motor via one extension element, and the drive motor has passed a delay time when the first switch or the second switch is operated. The delay time is designed so that the front swivel plate (5) reaches the end position defined by the first stopper (64) and the second stopper (65) when opened or closed. The electrical device according to claim 10. A shaft neck (32) of the crank (30) is formed in the shape of a hollow cylinder having an inner peripheral wall and an outer peripheral wall (34), and is fixed to the casing frame (1) to be connected to the third axis (55). The electric device according to claim 7, wherein a bearing pin (48) arranged concentrically with the inner peripheral wall of the hollow cylindrical body is fitted on the bearing pin (48) so as to form one rotary joint (Fig. 4). The slip clutch (60) is composed of a coil spring arranged concentrically around the third axis (55), and the inner diameter of the coil spring is smaller than the outer diameter of the shaft neck (32). The winding (63) of the coil spring (60) under the spring preload is fitted into the outer peripheral wall (34) of the shaft (32) of the hollow cylindrical body and the spring (60) is the third The electric device according to claim 12, wherein the electric force is pressed against the outer peripheral wall (34) of the shaft neck (32) with a radial force against the axis (55) (Fig. 4).   The electrical device according to claim 13, wherein the first end (61) of the coil spring (60) is positioned on one side wall (41) of the drive gear (40) (Fig. 4). When the winding direction of the coil spring (60) is the motor-type opening of the front swivel plate (5), the drive gear (40) fixedly coupled to the first end (61) of the coil spring (60) is The coil spring (60) is rotated in a direction opposite to the winding direction of the winding, and is fixedly coupled to the first end (61) of the coil spring (60) when the front revolving plate (5) is closed by a motor. The electrical device according to claim 14, wherein the drive gear (40) is selected to rotate in the winding direction of the coil spring (60). When the front swivel plate (2) is closed in contact with the front side (2) of the casing frame (1), the angle formed by the lever (10) and the crank arm (31) is determined so that the rotational moment is externally applied. The rotary moment transmitted from the lever (10) to the crank (30) when acting on the front turning plate (5) is designed to be smaller than the self-locking action acting against the rotational moment. (FIG. 2), The electric device of any one of Claim 1-15. When the front turning plate (5) is opened, the angle formed by the lever (10) and the crank arm (31) is transmitted from the lever (10) to the crank (30) when the front turning plate is manually closed. The electrical device according to any one of claims 1 to 16, wherein the rotational moment is selected to be larger than a self-binding effect that acts against the rotational moment (Fig. 3). The electric device according to any one of claims 1 to 17, wherein the center of gravity of the front turning plate (5) is arranged higher than the first axis (7) in a closed state of the front turning plate. One spring member (70) acts between the front swivel plate (5) and the casing frame (1), and the tension of the spring member (70) is such that the front swivel plate (5) is open. The electrical device according to any one of claims 1 to 18, which assists a turning motion (Fig. 5). The lever (10) is connected to the casing frame (1) via a tension spring (70), the tension of the tension spring (70) assisting the pivoting movement of the lever (10) when opened. 19. The electric device according to 19.

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