JP4978565B2 - Damper device and manufacturing method thereof - Google Patents

Description

  The present invention relates to a damper device used in various electronic devices such as a mobile phone and a personal computer, and a method for manufacturing the same.

  In recent years, as electronic devices such as mobile phones and personal computers have become more sophisticated and lighter, so-called foldable types in which a movable casing is attached to a fixed casing so that it can be opened and closed are increasing. There is also a demand for a hinge device and a damper device that can be used for a wide variety of opening and closing operations.

  Such a conventional damper device will be described with reference to FIGS.

  FIG. 7 is a cross-sectional view of a conventional damper device. In FIG. 7, reference numeral 1 denotes a substantially cylindrical and metal fixing case, and 2 denotes a substantially circular disk and a plurality of metal fixing plates formed in a polygonal shape. The outer periphery of the fixed plate 2 is in contact with the inner periphery of the fixed case 1, and a plurality of fixed plates 2 are accommodated in the fixed case 1 so as to be movable in the axial direction.

  Further, 3 is a metal movable shaft inserted into the fixed case 1, 4 is a plurality of metal movable plates that are substantially disk-shaped, and the plurality of movable plates 4 are alternately disposed between the plurality of fixed plates 2. The polygonal movable shaft 3 is inserted into the polygonal through-hole at the center of the movable plate 4, and a plurality of movable plates 4 are mounted on the movable shaft 3 so as to be movable in the axial direction. .

  Reference numeral 5 is a synthetic resin fixed body, and 6 is a fixed cover. The fixed cover 6 covers the opening at the right end of the fixed case 1, and a synthetic resin spacer 7 is held at the left end of the fixed body 5. Yes.

  Further, 8 is a coiled spring, which is mounted between the left side surface of the fixed case 1 and the fixed plate 2 in a state where the spring 8 is slightly bent, and elastically contacts the plurality of fixed plates 2 and the plurality of movable plates 4. In addition, a high-viscosity lubricant (not shown) is applied between the plurality of fixed plates 2 and the plurality of movable plates 4.

  In addition, the left end of the movable shaft 3 fitted with the plurality of movable plates 4 and inserted through the circular through holes at the center of the plurality of fixed plates 2 is rotatably held on the outer surface of the fixed case 1 by the retaining ring 9. The right end of the movable shaft 3 protrudes from the right side surface of the fixed cover 6 so as to be rotatable, and the damper device 10 is configured.

  The damper device 10 configured as described above is, for example, as shown in the perspective view of the mobile phone in FIG. 5, the fixed case 1 has a voice such as an operation unit 21 </ b> A having a plurality of keys arranged on the upper surface and a microphone. The right end of the movable shaft 3 is fixed to the fixed casing 21 in which the input section 21B is formed, and the movable casing 3 has a display section 22A such as a liquid crystal display element and a sound output section 22B such as a speaker formed on the surface. .

  Further, a hinge device 23 formed of a plurality of cams, springs (not shown), and the like is mounted between the fixed housing 21 and the movable housing 22, and the movable housing 22 is fixed by the hinge device 23. The casing 21 is urged in the closing direction or the opening direction and is pivotally supported so as to be openable and closable to constitute an electronic device.

  In the above configuration, for example, when a push button (not shown) on the side of the fixed casing 21 is pressed from the state in which the movable casing 22 is closed, the cams and springs of the hinge device 23 operate, and the movable casing 22 operates. A force in the opening direction is applied to the body 22, and the movable casing 22 is urged in the opening direction to perform the opening operation.

  At this time, the movable shaft 3 whose right end is fixed to the movable casing 22 of the damper device 10 also rotates in the opening direction, and the plurality of movable plates 4 attached to the movable shaft 3 rotate. 4, a plurality of fixed plates 2 that are alternately arranged between them and attached to the fixed case 1 are elastically contacted by a spring 8, and a high-viscosity lubricant is interposed between the movable plate 4 and the fixed plate 2. Since it is applied, resistance in the opening direction is generated between the plurality of movable plates 4 and the fixed plate 2.

  That is, a force in the opening direction is applied to the movable casing 22 by the hinge device 23, but resistance to the opening direction is also applied by the damper device 10 at the same time, so that the opening operation of the movable casing 22 is performed not slowly but gently. It is configured to be

  In addition, when the movable casing 22 is closed by hand from this open state, when the movable casing 22 is closed to a predetermined angle, a force in the closing direction is applied to the movable casing 22 by the operation of the cam or the spring of the opening / closing device 23. Although the movable casing 22 is held in a closed state, even during this closing operation, the damper device 10 applies resistance in the closing direction to the movable casing 22 so that the movable casing 22 is gently closed. Is called.

  That is, the movable housing 22 is urged in the opening or closing direction by the opening / closing device 23 to perform the opening / closing operation of the movable housing 22 with respect to the fixed housing 21, and a constant resistance is always applied to the movable housing 22 by the damper device 10. And a gentle opening / closing operation without impact of the movable housing 22 is performed.

As prior art document information related to the invention of this application, for example, Patent Document 1 is known.
JP 2007-321835 A

  However, in the above-described conventional damper device, when the damper device 10 is manufactured, the circular plate and the polygonal through hole at the center of the plurality of fixed plates 2 and the movable plate 4 are inserted into the polygonal movable shaft 3, Because the fixed plate 2 and the movable plate 4 and the angle between these and the fixed case 1 and the movable shaft 3 are positioned, the fixed plate 2 and the movable plate 4 are inserted into the fixed case 1 for assembly. There is a problem that the production is complicated and time-consuming.

  An object of the present invention is to solve such a conventional problem, and to provide a damper device that can be easily manufactured and can be opened and closed in various ways, and a manufacturing method thereof.

  In order to achieve the above object, the present invention has the following configuration.

The invention according to claim 1 of the present invention is provided with a substantially cylindrical fixed case, a movable shaft rotatably inserted into the fixed case, a through hole through which the movable shaft is inserted, and the fixed case. A fixed plate fixed in the rotational direction and mounted on the movable shaft so as to be movable in the axial direction, and a through hole through which the movable shaft is inserted are provided on the movable shaft inward of the through hole. The fixed plate is formed of a movable plate mounted on the movable shaft so as to be movable in the axial direction, and a spring for elastically contacting the fixed plate and the movable plate. A damper device is configured by providing a notch-like or hole-like positioning portion for positioning both the fixed plate and the movable plate at a predetermined angle on the outer sides of the through-hole and the movable plate. Yes, when making, cutout or The fixed positioning plate and movable plate can be mounted on the holder with the fixed positioning part, and this can be inserted into the fixed case for assembly, making assembly easy and inexpensive. A damper device can be obtained.

The invention of claim 2 is the invention of claim 1, wherein the cam portion of the movable plate, which was in contact with the cam portion to the protruding portion of the movable shaft at a predetermined angle, the cam portion at a predetermined angle By forming, it has the effect | action that various opening / closing operation of opening quickly to a predetermined angle or closing immediately before closing can be performed.

According to a third aspect of the invention, the holder was or substantially wall-shaped holding portion to the outer periphery of the shaft portion having a substantially pin-like retaining portion, the retaining the positioning portion of the positioning portion and the movable plate of the fixed plate It is brought into contact with the parts, the fixed plate and the movable plate is mounted to overlap with the retainer at a predetermined angle, after fitting the spring to the shaft portion outer peripheral, the spring and the fixed plate and the movable plate The damper device according to claim 1, wherein the damper is pulled out from the fixed case, and the movable shaft is inserted into the through hole of the fixed plate and the through hole of the movable plate. The damper device is manufactured, and has an effect that a damper device that can be manufactured easily and can be opened and closed in various ways can be realized.

  As described above, according to the present invention, it is possible to obtain an advantageous effect that it is possible to realize a damper device that can be easily manufactured and that can perform various opening and closing operations, and a manufacturing method thereof.

  Embodiments of the present invention will be described below with reference to FIGS.

  In addition, the same code | symbol is attached | subjected to the part of the structure same as the structure demonstrated in the term of background art, and detailed description is simplified.

(Embodiment)
FIG. 1 is a cross-sectional view of a damper device according to an embodiment of the present invention, FIG. 2 is an exploded perspective view thereof, in which 11 is a substantially cylindrical shape made of steel, copper alloy, sintered alloy, or synthetic resin. The fixed case 12 is a substantially octagonal fixed plate, and a circular through-hole 12A is provided in the center of the fixed plate 12, and the outer periphery of the fixed plate 12 is a substantially octagonal rectangular tube portion 11A of the fixed case 11. A plurality of fixed plates 12 are accommodated in the fixed case 11 so as to be movable in the axial direction in contact with the inner periphery.

  Reference numeral 13 denotes a movable shaft made of steel, copper alloy, sintered alloy, or synthetic resin inserted into the fixed case 11, 14 is also a substantially disc-shaped movable plate, and the plurality of movable plates 14 includes a plurality of movable plates 14. The movable plates 13 are alternately arranged between the fixed plates 12, and the movable shaft 13 is inserted into the through hole 14 </ b> A in the center of the movable plate 14, so that the plurality of movable plates 14 are mounted on the movable shaft 13 so as to be movable in the axial direction. Yes.

  Further, a pair of cutout positioning portions 12B and 14B extending outward are provided in the through holes 12A and 14A of the fixed plate 12 and the movable plate 14, and the through holes 14A of the plurality of movable plates 14 are provided in the through holes 14A. A pair of protruding portions 13A of the movable shaft 13 are in contact with each other and a pair of cam portions 15A, 15B and 15C having different dimensions protruding inward are formed at different angles.

  5 is a fixed body made of metal or synthetic resin, and 6 is also a fixed cover. The fixed cover 6 covers the opening at the right end of the fixed case 11, and a synthetic resin spacer 7 is held at the left end of the fixed body 5. Has been.

  Reference numeral 8 denotes a coil-shaped spring made of a copper alloy or a steel wire. The spring 8 is mounted between the left side surface of the fixed case 11 and the fixed plate 12 in a slightly bent state. The movable plate 14 is elastically contacted, and between the plurality of fixed plates 12 and the plurality of movable plates 14, a lubricant (not shown) such as high-viscosity silicone, olefin, or fluorine is applied.

  Further, a plurality of movable plates 14 are mounted, and the left end of the movable shaft 13 inserted through the through holes 12A in the center of the plurality of fixed plates 12 is rotatably held on the outer surface of the fixed case 11 by a retaining ring 9 and fixed. From the right side surface of the cover 6, the right end of the movable shaft 13 protrudes to be rotatable, and a damper device 17 is configured.

  In order to manufacture such a damper device 17, first, as shown in the perspective view of FIG. 3A, after mounting the fixing body 5 and the fixing cover 6 on the outer periphery of the shaft portion 19 </ b> A of the holder 19, A pair of notch-shaped positioning portions 12B and 14B of the plurality of fixed plates 12 and the movable plate 14 are brought into contact with a pair of substantially wall-shaped holding portions 19B on the outer periphery of the shaft portion 19A, and the shaft portion 19A is connected to the through holes 12A and 14A. The plurality of fixed plates 12 and the movable plate 14 are attached to the holder 19 as shown in FIG.

  That is, in this state, the plurality of fixed plates 12 and the movable plates 14 are respectively fixed to the fixed plates 12 and the movable plates 14 and the cam portions 15A of the plurality of movable plates 14 by the holding portions 19B in contact with the positioning portions 12B and 14B. In the state where the angles of 15B and 15C are positioned, they are mounted on the holder 19 in an overlapping manner.

  Next, as shown in FIG. 4A, the spring 8 is attached to the outer periphery of the shaft portion 19A, and then the plurality of fixed plates 12 and the movable plate 14 are attached as shown in FIG. 4B. The left end of the holder 19 is inserted into the fixed case 11 while the spring 8 is bent, and the fixed case 6 is fixed to the fixed case 11 by caulking the outer periphery of the fixed case 11 to fix the holder 19. Pull out from case 11.

  That is, in this state, the outer periphery of the plurality of fixed plates 12 contacts the inner periphery of the rectangular tube portion 11A of the fixed case 11, and the plurality of fixed plates 12, the movable plate 14, and the cam portions 15A of the plurality of movable plates 14 With the angles of 15B and 15C positioned, the fixed plate 12 and the movable plate 14 are housed in the fixed case 11.

  Further, after that, the movable shaft 13 is inserted from the right end of the fixed cover 6, inserted through the through holes 12 </ b> A and 14 </ b> A of the plurality of fixed plates 12 and the movable plate 14, and the spring 8, and then protruded from the outer surface of the fixed case 11. A retaining ring 9 is attached to the left end of the movable shaft 13, and the retaining ring 9 is caulked to hold the movable shaft 13 rotatably on the fixed case 11, thereby completing the damper device 17.

  That is, a pair of notch-shaped positioning portions 12B and 14B extending outward are provided in the through holes 12A and 14A of the plurality of fixed plates 12 and the movable plate 14, and the positioning portions 12B and 14B are provided on the holder 19 A plurality of fixed plates 12 and movable plates 14 are mounted on the holder 19 in contact with a pair of substantially wall-shaped holding portions 19B, and the damper device 17 is assembled by inserting them into the fixed case 11. It has come to be.

  That is, with the pair of notched positioning portions 12B and 14B, the fixed plate 12 and the movable plate 14 and the cam portions 15A, 15B, and 15C of the plurality of movable plates 14 are positioned at an angle. 12 and the movable plate 14 are attached to a holder 19 and can be assembled by inserting them into the fixed case 11, so that the damper device 17 can be easily manufactured.

  The damper device 17 configured as described above is, for example, as shown in the perspective view of the mobile phone in FIG. 6, the fixed case 11 has a voice such as an operation unit 21 </ b> A having a plurality of keys arranged on the upper surface and a microphone. The right end of the movable shaft 13 is fixed to the fixed casing 21 in which the input section 21B is formed, and is fixed to the movable casing 22 on the surface of which the display section 22A such as a liquid crystal display element and the sound output section 22B such as a speaker are formed. .

  Further, a hinge device 23 formed of a plurality of cams, springs (not shown), and the like is mounted between the fixed housing 21 and the movable housing 22, and the movable housing 22 is fixed by the hinge device 23. The casing 21 is urged in the closing direction or the opening direction and is pivotally supported so as to be openable and closable to constitute an electronic device.

  In the above configuration, for example, when a push button (not shown) on the side of the fixed casing 21 is pressed from the state in which the movable casing 22 is closed, the cams and springs of the hinge device 23 operate, and the movable casing 22 operates. A force in the opening direction is applied to the body 22, and the movable casing 22 is urged in the opening direction to perform the opening operation.

  At this time, the movable shaft 13 of the damper device 17 whose right end is fixed to the movable housing 22 also rotates in the opening direction, and the plurality of movable plates 14 mounted on the movable shaft 13 rotate. 14, a plurality of fixed plates 12 that are alternately arranged between them and mounted on the fixed case 11 are elastically contacted by the spring 8, and a high-viscosity lubricant is interposed between the movable plate 14 and the fixed plate 12. Since it is applied, resistance in the opening direction is generated between the plurality of movable plates 14 and the fixed plate 12.

  That is, a force in the opening direction is applied to the movable casing 22 by the hinge device 23, but resistance to the opening direction is also applied by the damper device 17 at the same time, so that the opening operation of the movable casing 22 is performed gently rather than suddenly. .

  At this time, a pair of cam portions 15A, 15B, and 15C having different dimensions projecting inward are formed in the through holes 14A of the plurality of movable plates 14 at different angles. With this angle, the rotating force of the movable shaft 13 is changed according to the opening angle, and the opening operation of the movable housing 22 can be configured in various ways.

  That is, for example, the cam portion 15A of the first movable plate 14 shown in FIG. 2 or FIG. 3A is formed so that the protruding portion 13A contacts when the movable shaft 13 rotates by 50 degrees. When the cam portion 15B is formed to be in contact with each other when the third cam portion 15C is rotated by 100 degrees, the protrusion portion 13A is rotated while the movable shaft 13 is rotated from the closed state to 50 degrees. Since 13A does not contact any of the cam portions 15A, 15B, and 15C, no resistance is generated by the damper device 17 during this period, and the opening operation of the movable housing 22 is quickly performed by the biasing force of the hinge device 23 in the opening direction. Done.

  After that, when the movable casing 22 is opened to 50 degrees, the protruding portion 13A of the movable shaft 13 comes into contact with the cam portion 15A of the first movable plate 14, and thereafter the protruding portion 13A. The first movable plate 14 whose cam portion 15 </ b> A has been pressed rotates together with the movable shaft 13.

  The first movable plate 14 and the fixed plates 12 arranged on the left and right sides are elastically contacted by the springs 8, and a high-viscosity lubricant is applied between the fixed plate 12 and the movable plate 14. Therefore, resistance in the opening direction is generated in the first movable plate 14 and the movable shaft 13.

  Further, when the movable shaft 13 is rotated by 80 degrees, the protruding portion 13A of the movable shaft 13 comes into contact with the cam portion 15B of the second movable plate 14, and when the movable shaft 13 is rotated by 100 degrees, the third movable sheet is movable. The resistance due to the three movable plates 14 is applied to the movable shaft 13 and the movable casing 22 until the cam portion 15C of the plate 14 abuts and thereafter rotates, for example, 160 degrees.

  That is, until the opening from the closed state to 50 degrees, no resistance force is generated by the movable plate 14 and the fixed plate 12, there is almost no resistance, and the opening operation of the movable housing 22 is performed quickly. Between 50 degrees and 80 degrees, the resistance by the first movable plate 14 is applied to the movable shaft 13 and the movable housing 22, and between 80 degrees and 100 degrees, the resistance by the second movable plate 14 is further 100. Between 160 degrees and 160 degrees, resistance by the third movable plate 14 is added, so that the movable casing 22 is gently opened.

  When the movable casing 22 is closed by hand from this open state, a force in the closing direction is applied to the movable casing 22 by the operation of the cam or spring of the opening / closing device 23, and the damper device 17 Although resistance in the closing direction is applied to the movable casing 22, the resistance is the highest while it is closed to 100 degrees, the resistance decreases in order of 80 degrees and 50 degrees, and there is no resistance until it is closed from 50 degrees. A quick closing operation is performed.

  That is, by providing the plurality of movable plates 14 with cam portions 15A, 15B, and 15C that respectively contact the protruding portions 13A of the movable shaft 13 at different angles, the movable plates 14 can be quickly opened to a predetermined angle or immediately before closing. More various opening / closing operations such as closing can be performed.

  Thus, according to the present embodiment, the notch-shaped positioning portions 12B and 14B are fixed to the fixed plate 12 housed in the fixed case 11 and the movable plate 14 mounted on the movable shaft 13 so as to be movable in the axial direction. In addition, the positioning portions 12B and 14B are brought into contact with a pair of substantially wall-shaped holding portions 19B of the holder 19, and the plurality of fixed plates 12 and the movable plate 14 are attached to the holder 19 and fixed thereto. By inserting into the case 11 and assembling the damper device 17, it is possible to obtain a damper device that is easy to assemble and can be manufactured at low cost, and a manufacturing method thereof.

  Further, cam portions 15A, 15B, and 15C that contact the movable shaft 13 at a predetermined angle are provided on the movable plate 14, and are formed at a predetermined angle so that the movable plate 14 can be quickly opened to a predetermined angle or immediately before the closing. Various opening and closing operations can be performed such as closing.

  In the above description, a pair of notched positioning portions 12B and 14B extending outward are provided in the through holes 12A and 14A of the plurality of fixed plates 12 and the movable plate 14, and the positioning portions 12B and 14B are provided. Although the structure in which the holder 19 is assembled by being brought into contact with the pair of substantially wall-shaped holding portions 19B has been described, the outer periphery of the fixed plate 12 and the movable plate 14 as shown in the partial perspective view of FIG. Or a pair of hole-like positioning portions 12D and 14D provided on the fixed plate 12 and the movable plate 14 as shown in FIG. 5B. The present invention can also be implemented as a configuration.

  In this case, as shown in the figure, the holder is provided with a pair of substantially pin-shaped holding portions 19C and 19D, and the positioning portions 12C and 14C, 12D and 14D are brought into contact with each other, and a plurality of holding portions 19C and 19D are provided. By assembling the fixed plate 12 and the movable plate 14 to the fixed case 11, the damper device can be easily manufactured in a state where the angles of the plurality of fixed plates 12 and the movable plate 14 are positioned as in the above configuration. It can be performed.

  Further, in the above description, in order to make the opening / closing operation easy to understand, the configuration in which the three fixed plates 12 and the movable plate 14 are each elastically contacted is described. However, the fixed plate 12 and the movable plate 14 are one by one. The present invention can also be implemented with the configuration described above, or with a configuration in which five or six plates and more fixed plates 12 and movable plates 14 are elastically contacted.

  Furthermore, in the above description, the configuration in which the electronic device is formed by mounting the hinge device 23 and the damper device 17 on the left and right of the fixed housing 21 and the movable housing 22 has been described. A hinge function may be formed, and the damper device and the hinge device may be integrated.

  The damper device and the manufacturing method thereof according to the present invention can be easily manufactured and can be used for various opening and closing operations, and is mainly useful for opening and closing various electronic devices.

Sectional drawing of the damper apparatus by one embodiment of this invention Exploded perspective view Same perspective view Same perspective view Partial perspective view Perspective view of mobile phone Sectional view of a conventional damper device

Explanation of symbols

DESCRIPTION OF SYMBOLS 5 Fixed body 6 Fixed cover 7 Spacer 8 Spring 9 Retaining ring 11 Fixed case 11A Square cylinder part 12 Fixed plate 12A, 14A Through-hole 12B, 12C, 12D, 14B, 14C, 14D Positioning part 13 Movable shaft 14 Movable plates 15A, 15B , 15C Cam part 17 Damper device 19 Holder 19A Shaft part 19B, 19C, 19D Holding part 21 Fixed casing 21A Operation part 21B Audio input part 22 Movable casing 22A Display part 22B Audio output part 23 Hinge device

Claims (3)

A substantially cylindrical fixed casing, a movable shaft which is rotatably inserted into the upper Symbol stationary casing is fixed to the rotation direction in the fixed casing with a through hole which the movable shaft is inserted is provided, the movable A fixed plate that is mounted on the shaft so as to be movable in the axial direction, and a cam portion in which a through hole through which the movable shaft is inserted is provided, and a protrusion provided on the movable shaft is in contact with the inside of the through hole in the rotational direction And a movable plate that is mounted on the movable shaft so as to be movable in the axial direction, and a spring that elastically contacts the fixed plate and the movable plate, and includes a through hole of the fixed plate and a through hole of the movable plate . A damper device provided with a notch-shaped or hole-shaped positioning portion that positions both the fixed plate and the movable plate at a predetermined angle on each outer side . The cam portion of the movable plate, the damper device according to claim 1, wherein the contacting cam portion to the protrusion of the movable shaft at a predetermined angle. The shank holder was or substantially wall-shaped holding portion on the outer periphery provided with a substantially pin-like retaining part of, and the positioning portion of the positioning portion and the movable plate of the fixed plate is abutted to the holding portion, a predetermined the fixed plate and the movable plate at an angle mounted superimposed on the holder, after fitting the spring to the shaft portion outer peripheral, housing by inserting the spring and the fixed plate and the movable plate in a fixed case 2. The method of manufacturing a damper device according to claim 1 , wherein the holder is pulled out from the fixed case and the movable shaft is inserted into the through hole of the fixed plate and the through hole of the movable plate .

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