JP4096253B2 - Panel drive mechanism - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a movable panel that can be opened and closed provided in front of a housing of an electrical apparatus such as an audio device such as a CD player, and more particularly to a panel drive mechanism that can smoothly perform the opening and closing operation with as few parts as possible. .
[0002]
[Prior art]
2. Description of the Related Art Conventionally, in-vehicle audio apparatuses and the like are known in which a panel that can be opened and closed is provided on the front surface of a housing in order to shield a disk insertion slot and operation switches.
[0003]
As such a device, an in-vehicle electronic device is provided inside an opening / closing panel that opens and closes an opening of a panel body provided in a vehicle, and the electronic device is accommodated in the panel body when the opening / closing panel is closed. There is a vehicle panel in which an electronic device appears in a panel opening when opened (for example, Patent Document 1).
[0004]
Specifically, plate-like links are generally fixed to the left and right sides of the open / close panel, support shafts that form a swing center are attached to both links, and one link is engaged with a cam hole or cam groove of a cam gear. A lever with a shaft to be fitted is provided, and the opening and closing panel closes when the left and right links swing upward about the support shaft by the cam and gear rotation drive, and the opening and closing panel opens when the left and right links swing downward It is.
[0005]
On the other hand, a movable nose (movable panel) disposed on the front surface of the main unit, a slide member rotatably connected to a lower fulcrum of the movable nose, and a driving means for moving the slide member in the front-rear direction of the main unit And an arm pivotably connected to the upper fulcrum of the movable arm, and in the process of moving the slide member from the retracted position to the advanced position, the arm and the slide member move forward integrally, and then with respect to the arm A front panel device in which a slide member moves forward is known (for example, Patent Document 2).
[0006]
[Patent Document 1]
JP 2000-318539 A (Claim 1, pages 4 to 6, FIGS. 1 to 9)
[Patent Document 2]
JP 2000-40882 (Claim 1, page 4, FIGS. 1 to 7)
[0007]
[Problems to be solved by the invention]
According to the vehicle panel described in the above-mentioned Patent Document 1, it is difficult to set a large operation amount of the panel because the opening / closing panel is engaged with the cam gear via the links fixed on both sides of the back surface. Moreover, since the rotational driving force of the cam / gear is transmitted only to one of the links, there is a risk that the opening / closing operation may not be performed smoothly due to the bias of the acting force on the panel.
[0008]
On the other hand, in the front panel device described in Patent Document 2, since the reciprocating linear motion of the slide member is converted to the rotational motion of the movable nose, it is necessary to secure a large operation area necessary for the slide member to linearly move. There is a disadvantage that it cannot be applied to devices with a small depth.
[0009]
The present invention has been made in view of the circumstances as described above, and its purpose is to allow an openable movable panel provided on the front of the housing to be smoothly opened and closed with as few parts as possible, and for installation. An object of the present invention is to provide a panel drive mechanism that can be applied to a small-sized electric apparatus having a small depth and a small depth.
[0010]
[Means for Solving the Problems]
In order to achieve the above object, the present invention provides a pair of first swing arms 5A, 5B whose one ends are coupled to the first fulcrum portions 2A, 2A of the movable panel on both sides of the movable panel 2 provided on the front surface 1A of the housing 1. And a connecting shaft 7 for oscillating both first oscillating arms synchronously, and second fulcrum portions 2B, 2B provided on both sides of the movable panel at positions spaced from the first fulcrum portions 2A, 2A. And a pair of second swing arms 6A and 6B having one end coupled thereto, and the first fulcrum portion 2A of the movable panel is swung around the connecting shaft 7 by the swing of the first swing arms 5A and 5B. A panel driving mechanism in which the second fulcrum portion 2B to which one end of the second swing arms 6A and 6B is coupled is turned around the first fulcrum portion 2A so that the movable panel 2 is opened and closed.
One end of the connecting shaft 7 has a cam gear 16 that forms a cam groove 16A on a flat surface portion, and a sliding pin 10A that engages with the cam groove 16A, and is also connected to one first swing arm 5A. A link 10 is provided, and the cam gear 16 rotates in the forward and reverse directions with power transmitted from a drive source (motor 9). The driven link 10 is swung by the rotation of the cam gear 16, and the driven link 10 is swung. Thus, one of the first swing arms 5A swings about the connecting shaft 7, and the power is transmitted to the other first swing arm 5B through the connecting shaft 7.
[0011]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, application examples of the present invention will be described in detail with reference to the drawings. FIG. 1 shows an example in which the panel driving mechanism is applied to a media driving device. In FIG. 1, reference numeral 1 denotes a housing constituting the apparatus main body, and a movable panel 2 is provided on the front surface 1 </ b> A so as to be opened and closed. The movable panel 2 has a function as an operation panel for giving a specific control signal to the control devices incorporated in the housing 1, and in this example, on its surface, a media playback start button, a music selection start button, and a pause In addition to operation switches such as buttons, a dial for adjusting the volume is provided. In addition to the main power switch, a switch for opening and closing the movable panel is provided on the front surface of the casing not covered with the movable panel 2.
[0012]
The movable panel 2 covers the area on the back side along the front surface 1A of the housing, and when an opening signal is given by a switch operation, the movable panel 2 changes to an inclined posture by the operation of the panel drive mechanism. As a result, a media insertion slot or the like appears on the front surface 1A of the housing.
[0013]
Reference numeral 3 denotes a seat plate fixed in the housing. The seat plate 3 includes a control circuit board necessary for driving the media and a pair of operation units 4A and 4B constituting a panel drive mechanism on the front left and right sides. It is attached facing.
[0014]
As apparent from FIG. 2, each of the operating units 4A and 4B includes first swing arms 5A and 5B that face each other, and second swing arms 6A and 6B that are close to each other. Among these, the pair of first swing arms 5A and 5B are fixed to both ends of a connecting shaft 7 installed between the operation units, and the connecting shaft 7 is rotatable by a bracket 8 formed integrally with the seat plate 3. Supported. The pair of first swing arms 5A and 5B swings in synchronism with each other about the connecting shaft 7.
[0015]
One operating unit 4A is provided with a motor 9 (driving source) on the driving side and a driven link 10 that swings by obtaining the driving force, and the power of the motor 9 is driven on the inner surface side of the operating unit 4A. A gear transmission for transmitting to 10 is provided. Then, the driven link 10 oscillated by the gear transmission part oscillates one first oscillating arm 5A connected to the link, thereby a pair of first oscillating arms 5A connected by the connecting shaft 7. 5B is configured to swing in synchronization.
[0016]
In FIG. 3, the configuration of the drive-side operation unit will be described. Reference numeral 11 denotes a base plate formed of a steel plate, and the gear transmission portion 12 is provided on the inner surface side thereof. The gear transmission unit 12 includes a worm 13 attached to a drive shaft of the motor 9, a two-stage worm wheel 14 and a two-stage gear 15 (reduction gear), and a cam gear 16 for swinging the driven link 10. The The worm 13 meshes with the large diameter portion 14A of the worm wheel, the small diameter portion 14B meshes with the large diameter portion 15A of the two-stage gear 15 (reduction gear), and the small diameter portion 15B meshes with the cam gear 16. .
[0017]
Of these, the cam gear 16 is formed as a flat cam with a spiral cam groove 16A formed on one side flat surface thereof (see FIG. 4), and a specific swinging motion is given to the driven link 10 by the cam groove 16A. Yes. In FIG. 3, reference numeral 17 denotes a support shaft that forms the swing center of the driven link. The driven link 10 is provided with a slide pin 10 </ b> A that engages with the cam groove 16 </ b> A at a position away from the support shaft 17. The base plate 11 is formed with an arcuate guide groove 18 centering on the support shaft 17 (see FIG. 5). The cam pin 16A is inserted into the cam groove 16A at the intersection with the guide groove 18, and the slide pin 10A is moved in the guide groove 18 by the action of the cam groove 16A. A rocking motion is performed.
[0018]
On the other hand, a first oscillating arm 5A and a second oscillating arm 6A are provided on the outer surface side of the base plate 11 in addition to the driven link 10. As apparent from FIG. 3, the first swing arm 5 </ b> A has a V shape and the lower center is fixed to the connecting shaft 7, and one end of the first swing arm 5 </ b> A projects forward from the base plate 11 to the upper side of the movable panel 2. The first fulcrum part 2A provided is rotatably coupled and the other end side has a long hole 19 and is connected to the distal end part of the driven link 10. Reference numeral 10B denotes a pressing pin provided at the tip of the driven link, and the pressing pin 10B is engaged with the long hole 19 of the first swing arm 5A. On the other hand, one end of the second swing arm 6A is supported by a support shaft 20 provided on the base plate 11, and the other end projects forward from the base plate 11 so as to be rotatable to the second fulcrum portion 2B of the movable panel. Are combined. The first fulcrum part 2A is provided on both sides of the movable panel so as to be opposed to each other, and the second fulcrum part 2B is on both sides of the movable panel and is located above the first fulcrum part 2A. Provided. Further, the second swing arm 6A forms a protruding piece 21 projecting downward at one end on the side of the support shaft 20 that forms the swing center. The projecting piece 21 is provided with a sliding pin 22, and the base plate 11 is formed with an arcuate guide groove 23 centering on the support shaft 20, so that the sliding pin 22 engages with the guide groove 23. It has become.
[0019]
Next, in FIG. 6, a torsion spring 24 is attached to the support shaft 17, and the follower link 10 is biased by the spring 24 counterclockwise in FIG. 6 (the direction of operation when the movable panel is closed). At the same time, a torsion spring 25 is also attached to the support shaft 20 of the second swing arm 6A, and the second swing arm 6A is attached to the spring 25 in the clockwise direction of FIG. 6 (operation direction when the movable panel is closed). It is energized. As a result, rattling between the driven link 10 and the second swinging link 6A is prevented, and when the movable panel is closed, the torsion springs 24 and 25 are respectively turned off from the driven link 10 and the second swinging arm 6A. The operation force is added to the motor 9 to reduce the load applied to the motor 9. A snap ring 26 is attached to the support shafts 17 and 20 so that the driven link 10 and the second swing arm 6A do not fall off (see FIG. 2). However, the snap ring 26 can be omitted substantially depending on the situation.
[0020]
As is clear from FIG. 7, a cover plate 27 is attached to the inner surface side of the base plate 11 via the gear transmission portion 12. The cover plate 27 is formed with a hook-shaped attachment portion 27A formed by bending the lower portion thereof outward at a right angle, and the operation unit 4A can be fixed to the seat plate 3 shown in FIG. 1 with the attachment portion 27A. . Further, a switch 28 (rotary encoder or the like) for detecting the rotation amount of the cam gear 16 is attached to the cover plate 27, and drive control of the motor 9 is performed based on the detection signal.
[0021]
Then, the operating unit 4A as described above cooperates with the driven side operating unit 4B connected by the connecting shaft 7 to drive the movable panel 2 from the closed state shown in FIG. 3 to the open state shown in FIG. It can be shown.
[0022]
Next, the configuration of the driven-side operation unit will be described with reference to FIGS. 9 and 10. The driven-side first swing arm 5B is substantially linear as shown in FIG. 9, and one end thereof is connected to the connecting shaft as described above. 7 is fixed to one end, and one end on the upper side is rotatably coupled to the first fulcrum portion 2A of the movable panel so as to face the first swing arm 5A on the opposite side. On the other hand, one end of the second swing arm 6B is rotatably coupled to the base plate 29, and the other end is opposed to the second swing arm 6A on the opposite side and is rotatable to the second fulcrum portion 2B of the movable panel. Are combined. In FIG. 9, reference numeral 30 denotes a support shaft provided on the base plate 29 to support one end of the second swing arm 6 </ b> B. The base plate 29 is formed with an arcuate guide groove 31 centered on the support shaft 30. At the same time, a sliding pin 32 that engages with the guide groove 31 is provided at the intermediate portion of the second swing arm 6B.
[0023]
Further, a torsion spring 33 is attached to the base plate 29 on the side of the support shaft 30 that forms the swing center of the second swing arm 6B, and the second swing arm 6B is rotated clockwise (movable panel) in FIG. The direction of operation when closing is energized). As a result, rattling of the second swing arm 6B is prevented as with the drive-side operation unit, and the torsion spring 33 applies an operating force to the second swing arm 6B when the movable panel 2 is closed. Thus, the load on the motor 9 is reduced.
[0024]
Further, as apparent from FIG. 10, the base plate 29 is formed with a hook-shaped mounting portion 29A formed by bending the lower portion outward at a right angle, and the operating unit 4B is shown in FIG. 1 with the mounting portion 29A. 3 can be fixed.
[0025]
Here, the operation of the panel drive mechanism configured as described above will be described. First, when the movable panel 2 is closed as shown in FIG. 3, when the motor 9 is driven to rotate in a predetermined direction by an external switch operation, the driving force is transmitted via the worm wheel 14 and the two-stage gear 15 to the cam gear. 16, the cam gear 16 rotates in a predetermined direction (counterclockwise in FIG. 3). Then, the driven link 10 having the sliding pin 10A engaged with the cam groove 16A swings about the support shaft 17 in the clockwise direction of FIG. 3, and the first swing arm 5A connected to this swings in the reverse direction. Move. For this reason, the other first swing arm 5B connected by the connecting shaft 7 also starts swinging motion about the connecting shaft 7 in synchronization with the first swing arm 5A.
[0026]
Thus, the first fulcrum portion 2A, to which one end of the first swing arms 5A, 5B is coupled, is pivoted about the connecting shaft 7 counterclockwise in FIG. 3, and the movable panel 2 is pushed forward. Is called. Further, in conjunction with the turning movement of the first fulcrum part 2A, the second oscillating arms 6A and 6B start the oscillating movement around the supporting shafts 20 and 30, and the second fulcrum part 2B to which one end thereof is coupled is the second fulcrum part 2B. Turn around one fulcrum 2A (clockwise in FIG. 3). As a result, the movable panel 2 is opened in a state of being inclined rearward as shown in FIG. 8, and at this time, a media insertion port or the like appears on the front surface of the housing.
[0027]
On the other hand, when the movable panel 2 is closed, the motor 9 may be reversed by operating the switch, so that the first swing arms 5A, 5B, etc. move in the opposite direction to cause the movable panel 2. Works.
[0028]
Although a preferred example of the present invention has been described in detail with reference to the drawings, the panel driving mechanism according to the present invention is not limited to a media driving device that drives a medium such as a CD, DVD, MD, or video tape, but a television receiver. It can be applied to various electric devices such as radio receivers.
[0029]
【The invention's effect】
As is apparent from the above description, since the panel drive mechanism of the present invention has a structure in which a cam mechanism and a link mechanism are combined, the movable panel can be reliably opened and closed with a small number of parts, and the rack and pinion system Thus, since a large driving area is not required, the apparatus can be miniaturized.
[0030]
In particular, since the rotational movement of the cam gear is transmitted to the movable panel via the driven link and the first swing arm, a large displacement can be given to the movable panel, thereby making it possible to set a large opening / closing area. In addition, since the pair of first swing arms are connected by the connecting shaft so that the opening / closing driving force acts evenly on both sides of the movable panel, the malfunction of the movable panel does not occur due to the bias of the acting force. There is an effect that the opening and closing operation is performed smoothly.
[Brief description of the drawings]
FIG. 1 is a schematic perspective view of a media driving device provided with a panel driving mechanism according to the present invention. FIG. 2 is a perspective view of a panel driving mechanism according to the present invention. 4 is a perspective view showing a cam gear. FIG. 5 is a perspective view showing a base plate to which the cam gear is attached. FIG. 6 is a right side view of the panel drive mechanism according to the present invention. 8 is an explanatory view showing a state in which the movable panel is opened. FIG. 9 is a left side view of the panel drive mechanism according to the present invention. FIG. 10 is a left plan view of the panel drive mechanism.
DESCRIPTION OF SYMBOLS 1 Housing 1A Front surface 1B Shielding part 5A, 5B 1st swing arm 6A, 6B 2nd swing arm 7 Connecting shaft 9 Motor (drive source)
10 Drive link 10A Sliding pin 12 Gear transmission 16 Cam gear 16A Cam groove

Claims (1)

A pair of first swing arms whose one ends are coupled to the first fulcrum portion of the movable panel on both sides of the movable panel provided on the front surface of the housing, and a connection for swinging both the first swing arms in synchronization A shaft and a pair of second oscillating arms whose one ends are coupled to second fulcrum portions provided on both sides of the movable panel at positions spaced from the first fulcrum portion, and by swinging the first oscillating arm While the first fulcrum portion of the movable panel is pivoted around the connecting shaft, the second fulcrum portion to which one end of the second swing arm is coupled is pivoted around the first fulcrum portion, so that the movable panel is opened and closed. A panel driving mechanism,
One end of the connecting shaft is provided with a cam gear that forms a cam groove in a flat surface portion, a slide pin that engages with the cam groove, and a driven link that is connected to one first swing arm, The cam gear obtains power transmitted from the drive source and rotates in the forward and reverse directions. The rotation of the cam gear swings the driven link, and the swing of the driven link causes the one first swing arm to move the connecting shaft. A panel drive mechanism that swings to the center and that power is transmitted to the other first swing arm through the connecting shaft.

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