JP4211212B2 - Shutter mechanism and portable device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a shutter mechanism that opens and closes an operation unit of a device, and a portable device including the shutter mechanism .
[0002]
[Prior art]
For example, in a portable audio device, in order to prevent an erroneous operation of the switch of the operation unit, a shutter that opens and closes the operation unit is provided, and the external unit is mechanically shut off by closing the operation unit with this shutter. Some use a mechanical hold shutter mechanism.
[0003]
An example of this type of conventional shutter mechanism shown in FIG. In the figure, reference numeral 41 denotes, for example, a portable cassette player, and a shutter mechanism 44 is provided to open and close an operation unit 43 provided on one surface of a housing 42 of the cassette player 41.
[0004]
The operation unit 43 is provided with a reproduction switch 43 a, a stop switch 43 b, a rewind switch 43 c, and a fast forward switch 43 d, and the operation unit 43 is opened and closed by a moving operation of the shutter 45.
[0005]
That Figure 9 A shows a state where the operation unit is closed by the shutter 45, by an external force to the operating unit 43 in this state is mechanically blocked by the shutter 45, each switch of the operation unit 43 an erroneous operation that is of The switch is prevented from being pushed inadvertently.
[0006]
Then by opening the operation unit 43 as shown from the state in FIG. 9 B moves the shutter 45 in a state that can freely operate the switch of the operation unit 43.
[0007]
Showing the structure of the operation mechanism of the shutter mechanism 44 in Fig. Incidentally, A in Fig. 10, B is A respective 9 corresponds with B, i.e. FIG. 10 A is a state where the operation unit by the shutter is closed, the B is in a state of being opened.
[0008]
FIG. 10 shows the shutter mechanism 44 as viewed from the rear side of the housing. 46 is a fixed plate fixed to the housing, and 47 is a slide plate attached to the fixed plate 46 so as to be linearly movable. The slide plate 47 is connected to the shutter 45 via the connecting portion 48, that is, the slide plate 47 is linearly moved integrally with the shutter 45.
[0009]
A toggle spring 49 made of a torsion coil spring is attached between the end of the fixed plate 46 and the end of the slide plate 47, and the slide plate 47, that is, the shutter 45 is moved by the spring force of the toggle spring 49. A toggle operation is sometimes performed, and the operation unit 43 is held in a fixed state between a closed position and an open position.
[0010]
[Problems to be solved by the invention]
Such a conventional shutter mechanism has the following problems.
In other words, the conventional shutter mechanism has a structure in which the operation unit is opened and closed by simply moving the shutter linearly in a plane. Therefore, when the shutter is moved, the moving distance (stroke) is felt long and the operability is good. I can not say.
[0011]
The present invention has been made to solve such a problem, and an object of the present invention is to provide a shutter mechanism that can provide a good operational feeling.
[0012]
[Means for Solving the Problems]
In order to achieve the above object, the present invention provides:
In the shutter mechanism having a shutter that opens and closes the operation unit of the device,
The shutter is
A rotating shutter member formed in a substantially L-shape and operated to move while rotating along a guide groove provided on the device side;
A linear motion shutter member connected to the rotation shutter member, linearly moved in a plane along the guide groove in conjunction with the rotation shutter member, and having a flat plate shape ,
Composed of
A leaf spring member is attached to the direct-acting shutter member to engage with the engaging portion on the device side and hold the shutter in a fixed state at the position where the shutter is in the two positions of the closed position and the open position. The structure is obtained.
[0013]
In the shutter mechanism of the present invention configured as described above, the shutter is moved by a combined movement of rotational movement and planar linear movement, so that the apparent moving distance is felt short, and as a result, the shutter is moved. Good operation feeling can be obtained.
[0014]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
1 and 2 show a portable cassette player as an example of an audio device to which the shutter mechanism of the present invention is applied. FIG. 1 is a perspective view of the portable cassette player, and FIG.
[0015]
The cassette player 1 is a portable device with an auto reverse function that uses a compact tape cassette as a recording medium and can reproduce both A / B sides of a tape cassette driven by a rechargeable battery or a dry battery.
Reference numeral 2 denotes an apparatus main body of the cassette player, 3 denotes a casing thereof, and 4 denotes a lid. The lid 4 is openable and closable with respect to the device main body 2. In a normal state, the lid 4 is closed and locked, and the lid 4 is unlocked by moving the operation knob 5 to open the lid. With the body 4 open, the tape cassette is inserted and attached.
Reference numeral 6 denotes a headphone connection terminal, which is used by connecting a headphone device with a remote controller to the connection terminal 6.
[0016]
In the cassette player 1, an operation unit 7 is provided on the side surface of the device body 2, and the operation unit 7 is closed by the shutter mechanism 10 according to the present invention in the state shown in FIGS. 1 and 2.
[0017]
FIG. 3 is an enlarged view of the vicinity of the operation unit.
The operation unit 7 provided on the side surface of the apparatus main body 2 has a so-called jog switch 8, that is, the jog switch 8 performs various operations by pushing and rotating the jog switch 8. For example, as shown in FIG. 4, when the jog switch 8 is pushed in the direction of the arrow a at the neutral position, the reproduction / stop operation is performed alternately, and when the jog switch 8 is rotated in the direction of the arrow b, rewinding is performed. When it is rotated in the direction c, a fast-forward operation is performed.
[0018]
In the operation unit 7, a shutter mechanism 10 according to the present invention is provided in order to prevent erroneous operation of the jog switch 8.
[0019]
In this shutter mechanism 10, a decorative frame 11, which is an L-shaped appearance part, is attached over the flat plate surface 3 a and the side plate surface 3 b that straddle the ridge line portion of the housing 3 of the device body, and moves within the frame of the decorative frame 11. A shutter 12 is provided.
[0020]
The shutter 12 is composed of two parts, that is, a rotary shutter member 13 and a linear shutter member 14.
The rotary shutter member 13 has a lid shape that covers the jog switch 8 of the operation unit 7, and is operated so as to move while rotating from the side plate surface 3 b to the flat plate surface 3 a of the housing 3.
On the other hand, the linear shutter member 14 has a flat plate shape, is connected to the rotary shutter member 13, and moves along the flat plate surface 3 a of the housing 3 in conjunction with the rotary shutter member 13.
[0021]
FIG. 3A shows a state in which the operation unit 7 is closed by the shutter 12. In this state, an external force applied to the operation unit 7 is mechanically interrupted by the shutter 12, so that the jog switch 8 of the operation unit 7 is erroneously operated. Inadvertent operation of the switch 8 is prevented.
[0022]
From this state, the jog switch 8 can be freely operated by placing the finger on the rotating shutter member 13 to move the shutter 12 and opening the operation unit 7 as shown in FIG. 3B.
In order to make it easier to place a finger on the rotating shutter member 13 during the moving operation of the shutter, a knurled portion 13b is formed at the corner of the rotating shutter member 13.
[0023]
A more detailed structure of the shutter mechanism 10 will be described with reference to FIG.
[0024]
FIG. 5 shows the attachment structure of the decorative frame 11 as a appearance part as viewed from the back side.
Here, the decorative frame 11 is a resin molded product and is attached to the light metal casing 3 such as aluminum.
[0025]
The decorative frame 11 is a frame member bent in an L shape including a horizontal frame portion 11a corresponding to the flat plate surface 3a of the housing 3 and a vertical frame portion 11b corresponding to the side plate surface 3b, and further on the back side of the vertical frame portion 11b. Is integrally formed with a block portion 11c for forming a guide groove 22 to be described later.
[0026]
A plurality of welding projections 15 project from the back side of the horizontal frame portion 11a of the decorative frame 11, and a groove 16 is formed at the periphery of the tip of the vertical frame portion 11b.
On the other hand, the casing 3 has a flat surface 3 a which is a stepped surface portion 17 in which a portion corresponding to the inside of the frame of the decorative frame 11, that is, a portion where the shutter 12 is arranged, is drawn in one step from the surface. 11 is formed in the portion extending from the front of the stepped surface portion 17 to the side plate surface 3b, and an open hole 19 is formed by greatly cutting this portion.
[0027]
Then, the welding projection 15 of the horizontal frame portion 11a of the decorative frame 11 is passed through the through hole 18 of the housing 3, and at the same time, the groove 16 of the vertical frame portion 11b is engaged with the edge of the opening hole 19 of the housing 3, and welding is performed in this state. The decorative frame 11 is fixed to the housing 3 by a heat welding technique in which heat is applied to the tip of the protrusion 15 with ultrasonic waves to melt and crimp the portion.
[0028]
FIG. 6 shows the structure of the guide groove 22 provided in the decorative frame 11.
The guide grooves (cam grooves) 22 are formed symmetrically on both the left and right sides of the decorative frame 11, and the shutter 12 is moved along the guide grooves (cam grooves) 22.
The guide groove 22 is formed by a front arcuate curved portion (rotational operation range) 22a and a rearward linear portion (linear operation range) 22b continuous thereto.
[0029]
Here, the curved portion 22a is formed between the portion of the decorative frame 11 from the horizontal frame portion 11a to the vertical frame portion 11b and the block portion 11c, and the straight portion 22b is a part of the front following the curved portion 22a. Is formed between the horizontal frame portion 11a and the block portion 11c, and most of the rear thereof is formed between the horizontal frame portion 11a and the stepped surface portion 17 of the housing 3.
[0030]
FIG. 7 shows the structure of the shutter 12 in an inverted state.
As described above, the shutter 12 is composed of two parts, the rotating shutter member 13 and the direct-acting shutter member 14, both of which are resin molded products.
The rotating shutter member 13 has a slide pin 24 projecting outward from the front side surface thereof and a slide pin 25 projecting outward from the tip of the leg portion 13a extending rearward symmetrically on both the left and right sides. As shown in FIG. 8, the front and rear slide pins 24 and 25 are engaged and incorporated so as to be movable from the curved portion 22a of the guide groove 22 of the decorative frame 11 along the straight portion 22b.
On the other hand, the direct-acting shutter member 14 has slide pieces 26 projecting outward from the side surfaces on both the left and right sides. .
[0031]
Further, a connecting concave portion 27 is formed on both sides of the front portion of the linear shutter member 14, and a slide pin 25 on the rear side of the rotating shutter member 14 is engaged with the connecting concave portion 27. The linear motion shutter member 14 is connected.
The rotating shutter member 13 and the linear shutter member 14 are incorporated in the guide groove 22 when the decorative frame 11 is attached to the housing 3.
[0032]
Further, in the shutter 12, a plate spring member 28 made of sheet metal is attached to the back surface side of the direct acting shutter member 14.
As is apparent from FIG. 7, the leaf spring member 28 has a hole 28 b corresponding to a welding projection 29 provided on the back side of the linear motion shutter member 14, and the hole 28 b is passed through the welding projection 29. The tip of the welding projection 29 is fixed by heat welding that is melted and caulked by heating such as ultrasonic waves.
[0033]
As shown in FIG. 8, the leaf spring member 28 has a spring piece 28a having a V-shaped bent shape protruding from the center thereof, and on the side of the housing 3 corresponding to the spring piece 28a, as shown in FIG. Engagement portions 30 and 31 are provided at the locations.
Here, in this example, the front end edge of the stepped surface portion 17 of the housing 3 is a front engaging portion 30, and the rear engaging portion 31 is a hole provided in the stepped surface portion 17 of the housing 3, and the shutter 12 is When the operating portion 7 is in the closed position, the spring piece 28a of the leaf spring member 28 engages with the front engaging portion 30, and when the shutter 12 is in the open position of the operating portion 7, the spring of the leaf spring member 28 is engaged. The piece portion 28a is engaged with the rear engaging portion 31.
[0034]
In FIG. 8, reference numeral 32 denotes a circuit board fixed inside the housing 3. The jog switch unit 8 </ b> A is fixed to the circuit board 32, and the jog switch 8 as an operation member is attached to the block portion 11 c of the decorative frame 11. It is exposed to the operation unit 7 from the formed hole 33.
Reference numeral 34 denotes a part of a mechanical deck chassis that constitutes a tape drive mechanism, and the decorative frame 11 secures strength from external pressure by the block 11c being in contact with and supported by the mechanical deck chassis 34.
[0035]
Next, the detailed operation of the shutter mechanism 10 configured as described above will be described with reference to FIG.
FIG. 8A shows a state in which the operation unit 7 is closed by the shutter 12. From this state, the shutter 12 is moved along the guide groove 22 by placing the finger on the rotating shutter member 13 and moving the shutter 12 backward. It moves and it will be in the state which opened the operation part 7 as shown to FIG. 8B.
Further, from this state, by placing a finger on the rotating shutter member 13 and moving the shutter 12 forward, the shutter 12 moves along the guide groove 22 and closes the operation unit 7 as shown in FIG. 8A. It becomes.
[0036]
In the moving operation of the shutter 12, the rotating shutter member 13 moves the rear slide pin 25 along the straight portion 22 b of the guide groove 22 and the front slide pin 24 along the curved portion 22 a of the guide groove 22. Therefore, the rotary shutter member 13 is operated so as to move while rotating around the rear slide pin 25 as a fulcrum.
On the other hand, the linearly moving shutter member 14 is linearly moved in a plane as the slide piece 26 moves along the linear portion 22 b of the guide groove 22 in conjunction with the rotating shutter member 13.
[0037]
8A, when the operating portion 7 is closed by the shutter 12, the spring piece portion 28a of the leaf spring member 28 is engaged with the front engaging portion 30. In this state, the V-shaped spring piece portion 28a is engaged. Presses the engaging portion 30 to move the linear shutter member 14 forward, and the rotating shutter member 13 is pressed against the stopper surface portion 35 of the decorative frame 11 by the force, whereby the shutter 12 is moved to its position. Is held in a fixed state.
[0038]
Further, when the shutter 12 is moved by the action of the leaf spring member 28 in the closing direction, that is, in the forward direction, the shutter 12 is moved so as to be retracted at the end of the operation, and the rotating shutter member 13 is moved to the decorative frame. 11, so as to contact the stopper surface portion 35 of the eleven stoppers, whereby a suitable pulling feeling (toggle feeling) can be obtained in the movement operation of the shutter 12.
[0039]
On the other hand, in the state where the shutter 12 is moved backward as shown in FIG. 8B and the operation portion 7 is opened, the spring piece portion 28a of the leaf spring member 28 is engaged with the rear engagement portion 31, and in this state V The letter-shaped spring piece 28a abuts against the front and rear edges of the hole of the engaging portion 31 and is engaged in a stable state, thereby providing a feeling of use of a click stop at the end of the rearward movement operation of the shutter 12. Thus, the shutter 12 is held fixed at that position.
[0040]
The shutter mechanism 10 of this example configured and operated as follows has the following characteristics.
That is, in the shutter mechanism 10, the movement locus of the shutter 12 is a movement obtained by combining the rotational movement operation and the planar linear movement operation (also performing planar movement while rotating), and therefore the actual linear movement distance L of the shutter 12. linear movement distance L ₂ in the rotation movement of the rotating shutter member 13 is an operating member for _one short, the moving distance of the apparent Therefore shutter 12 is felt short.
Accordingly, in the movement operation of the shutter 12, the distance at which the click stop or pull-in feeling is not felt by the leaf spring member 28 is short, and the pull-in feeling in the rotational movement operation is mainly used, so that a good operation feeling can be obtained. is there.
[0041]
Further, the shutter mechanism 10 has a simple configuration because there are only five components including the casing (the casing 3, the decorative frame 11, the rotating shutter member 13, the linear motion shutter member 14, and the leaf spring member 28). Since it is easy to assemble, it can be implemented at low cost.
[0042]
Furthermore, in this shutter mechanism 10, the structure of the guide groove 22 provided in the decorative frame 11 in which a part of the linear portion 22b is formed by the housing 3 enables the decorative frame 11 to be thin and the entire mechanism to be thinned. It is said.
[0043]
In addition, this configuration ensures sufficient strength of the shutter mechanism 10 against external force.
That is, when the shutter 12 is moved to the position where the operation unit 7 is opened, the rotating shutter member 13 protrudes from the surface of the device as shown in FIG. 8B, and the device is dropped in this state. When this occurs, the impact is likely to concentrate on the rotating shutter member 13, but this impact is distributed and received by the decorative frame 11 and the housing 3, and is particularly sufficient when the impact is received by the metal housing 3. Strength can be secured.
[0044]
The shutter mechanism 10 has a unit configuration in which the entire mechanism is housed in an independent space on the housing 3, and the shutter 12, which is an operating component, is blocked by the housing 3 from the inside of the device. There is no risk of contact with the substrate 32 and other internal components, and it is not necessary to secure a relief distance during assembly, which is effective for reducing the thickness of the mechanism.
[0045]
Further, in this shutter mechanism 10, the leaf spring member 28 is used as a component that gives the shutter 12 a click stop and a pull-in feeling, and this is attached to the housing 3 on the back surface side of the linear motion shutter member 14. In the moving operation of 12, there is no unstable element such as the leaf spring member 28 coming off, and the structure of the leaf spring member 28 disposed in a small space between the linear motion shutter member 14 and the housing 3 reduces the thickness of the mechanism. This is even more advantageous.
[0046]
Further, in this shutter mechanism 10, the rotating shutter member 13 which is an operation member of the shutter 12 has slide pins 24 and 25 on the front and rear sides, which are provided symmetrically on both the left and right sides and engaged with the guide groove 22. That is, since the rotating shutter member 13 has a structure supported by the guide groove 22 at four points, a stable moving operation is performed, and durability when an external force is applied is sufficiently ensured, and a high-strength shutter. The mechanism is realized.
[0047]
The embodiment of the present invention has been described above, but the present invention is not limited to this configuration.
Further, the present invention is not limited to the cassette player as illustrated, but can be widely applied to a mechanical hold shutter mechanism that opens and closes operation units of various devices.
[0048]
【The invention's effect】
As apparent from the above description, the shutter mechanism of the present invention feels that the apparent moving distance of the shutter is short because the shutter is moved by a combined movement of the rotational movement operation and the planar linear movement operation. As a result, a good shutter operation feeling can be obtained and the usability is improved.
[Brief description of the drawings]
FIG. 1 is a perspective view of a portable cassette player to which a shutter mechanism according to the present invention is applied.
FIG. 2 is a perspective view seen from the inside out.
FIG. 3 is an enlarged perspective view of the shutter mechanism, where A is a state where an operation unit is closed by a shutter and B is an open state.
FIG. 4 is an explanatory diagram of operation of a jog switch in an operation unit.
FIG. 5 is an exploded perspective view seen from the back side showing a structure for attaching a decorative frame to the housing.
FIG. 6 is a longitudinal side view showing a structure of a guide groove.
FIG. 7 is an exploded perspective view showing the structure of the shutter as seen from the back side.
8A and 8B are vertical side views of the shutter mechanism according to the present invention, in which A is a state in which an operation unit is closed by the shutter, and B is an open state.
FIGS. 9A and 9B are plan views showing a conventional shutter mechanism, in which A is a state where an operation unit is closed by a shutter, and B is an open state. FIGS.
FIG. 10 is a view of the shutter mechanism as seen from the back side, in which A is a state in which the operation unit is closed by the shutter, and B is an open state.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... cassette player, 2 ... device main body, 3 ... housing, 7 ... operation part, 8 ... jog switch, 10 ... shutter mechanism, 11 ... decoration frame (appearance parts), 12 ... shutter, DESCRIPTION OF SYMBOLS 13 ... Turning shutter member, 14 ... Linear motion shutter member, 22 ... Guide groove, 28 ... Plate spring member, 30, 31 ... Engagement part

Claims (3)

A shutter mechanism having a shutter that opens and closes an operation unit of the device,
The shutter
A rotating shutter member formed in a substantially L-shape and operated to move while rotating along a guide groove provided on the device side;
A linear motion shutter member that is coupled to the rotation shutter member, is linearly moved in a plane along the guide groove in conjunction with the rotation shutter member, and has a flat plate shape , and
The linear shutter member engages with an engagement portion on the device side in a state where the shutter is in a position where the operation portion is closed and an open position, and the shutter is held in a fixed state at that position. A shutter mechanism to which a leaf spring member is attached.   The shutter mechanism according to claim 1, wherein the guide groove is provided in a body part to be attached to a housing of the device, and a part of the guide groove is formed by the housing. In a portable device provided with an operation unit,
As a shutter to open and close the operation unit,
A rotating shutter member formed in a substantially L-shape and operated to move while rotating along a guide groove provided on the device side;
A linear motion shutter member that is coupled to the rotation shutter member, is linearly moved in a plane along the guide groove in conjunction with the rotation shutter member, and has a flat plate shape , and
The linear shutter member engages with an engagement portion on the device side in a state where the shutter is in a position where the operation portion is closed and an open position, and the shutter is held in a fixed state at that position. A portable device to which a leaf spring member is attached.

Images