JP2016046185A - Electronic apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an electronic apparatus that enables an operation key to be stabilized with a simple construction.SOLUTION: An operation key 40 having a flange portion 42 and a key top 41 is provided at the peripheral edge of a switch through-hole 32 formed on an upper surface 3a of a front-side cabinet 3 in connection with a press type switch 50. The flange portion 42 abuts against the peripheral edge of the switch through-hole 32 from the inside of the front-side cabinet 3 and is retained. The key top 41 is continuous with the flange portion 42, and exposed to the exterior appearance. The operation key 40 is provided with an elastic member 43 for urging the flange portion 42 to the peripheral edge side of the switch through-hole 32. Reaction force F of the elastic member 43 is received by a reaction force receiver 33 formed in the front-side cabinet 3.SELECTED DRAWING: Figure 1

Description

  The present invention relates to an electronic device having an operation key that presses a push-type switch disposed inside one surface of a housing.

  Conventionally, it has been known that operation keys fitted from the inside to the switch through-holes provided in the housing will make a sound when shaken or shake, and the pressing feeling will deteriorate unless some measure is taken. It has been.

  Therefore, for example, as in Patent Document 1, a ring-shaped leaf spring made of an elastic body that repels in the vertical direction is provided between the upper surface of the flange portion on the outer periphery of the operation key and the lower surface around the through hole of the upper case. There is known a device that urges the operation knob. In this structure, when the reaction force of the leaf spring is received by the spacer provided below the center of the disk-shaped operation key, it cannot be applied to a structure in which the operation key is pushed down directly.

JP 2007-48760 A

  On the other hand, in order to be able to push down the operation key directly, the pressing switch itself receives the reaction force of the leaf spring.

  Then, since the operation key must be supported by the pressing switch itself which is a movable part, it is necessary to sufficiently reduce the force from the leaf spring with respect to the operating load of the pressing switch in order to prevent the malfunction of the switch. . On the other hand, if the urging force of the leaf spring is not sufficiently large, the operation keys cannot be sufficiently supported and rattling occurs, and it is difficult to adjust the urging force.

  The present invention has been made in view of such a point, and an object thereof is to stabilize an operation key with a simple structure.

  In order to achieve the above object, in the present invention, a flange portion is provided on the operation key, and an elastic member is provided for biasing the flange portion toward the periphery of the switch through hole.

Specifically, the electronic device of the present invention includes a press switch disposed inside the housing with respect to one surface of the housing,
A flange portion that is contacted from the inside of the housing to the periphery of a switch through-hole formed on one surface of the housing corresponding to the push switch, and is continuously exposed to the flange. An operation key having a key top to perform,
And an elastic member that is provided on the operation key and biases the flange portion toward the periphery of the switch through hole.

  And the said elastic member is comprised so that it may receive reaction force in the reaction force receiving part formed in the said housing | casing or the holder part which is attached to this housing | casing and supports the said press-type switch.

  According to the above configuration, since the elastic member urges the flange portion from the inside of the housing to the peripheral side of the switch through hole in the direction opposite to the pressing direction of the operation key, the flange portion urges the elastic member. And the reaction force at the periphery of the through hole for the switch, the operation key is stabilized without wobbling. Moreover, since the housing or the holder portion supports the reaction force of the elastic member, the pressing switch itself does not need to support the reaction force, and does not require fine adjustment of the biasing force of the elastic member.

  As described above, according to the present invention, the operation key is provided with the flange portion and the elastic member for urging the flange portion toward the peripheral side of the switch through hole is provided. Since the reaction force is received by the reaction force receiving portion formed in the holder portion that is attached to the holder and supports the push switch, the operation key can be stabilized with a simple structure.

FIG. 3 is an enlarged cross-sectional view taken along line II in FIG. 2. 1 is a partially enlarged perspective view showing a mobile phone according to an embodiment of the present invention. It is a disassembled perspective view which shows a mobile telephone. FIG. 4 is an enlarged perspective view of a portion IV in FIG. 3. It is the VV line expanded sectional view of FIG. It is the expansion perspective view which made the press-type switch and its periphery visible. FIG. 3 is a view corresponding to FIG. 1 showing a mobile phone according to a second embodiment of the present invention. It is a sectional view showing a cellular phone concerning Embodiment 3 of the present invention, (a) before attaching an operation key, and (b) A sectional view after attaching an operation key. FIG. 7A is a cross-sectional view showing a mobile phone according to a fourth embodiment of the present invention, (a) before attaching an operation key, and (b) a cross-sectional view after attaching the operation key. FIG. 7A is a cross-sectional view schematically showing a positional relationship before attaching an operation key, showing a mobile phone according to a fifth embodiment of the present invention, and FIG.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

(Embodiment 1)
1 to 6 show a mobile phone 1 as an electronic apparatus according to Embodiment 1 of the present invention. The mobile phone 1 has a substantially rectangular parallelepiped shape that is long in the vertical direction so as to be easily held by hand, and includes a liquid crystal display or the like. The display unit 2 is housed on the front side, and includes a front cabinet 3 as a housing, a back cabinet 4 that covers the back of the front cabinet 3, and a rear cover 5 that covers the back of the back cabinet 4. ing. For example, a rechargeable battery 6 and a circuit board 7 are accommodated between the front side cabinet 3 and the back side cabinet 4.

  The front-side cabinet 3 has a substantially rectangular plate shape, and a rectangular plate-shaped frame sheet metal 31 is insert-molded in the resin portion 30. The front-side cabinet 3 does not have to be an insert-molded product in which the frame sheet metal 31 is inserted, and may be molded only with resin. On the upper side of the rechargeable battery 6, as shown in FIG. 4, a sub-board holder 8 that accommodates the sub-board 9 is provided and attached to the front-side cabinet 3.

  For example, on the upper surface 3 a on the upper side when viewed from the front of the resin portion 30, long and thin switch through holes 32 are formed penetrating from side to side. The switch through hole 32 accommodates an operation key 40 such as a power button. The switch through-hole 32 may be provided not only on the top surface 3a but also on any of the left and right side surfaces, the bottom surface, the front surface, and the back surface.

  As shown in FIG. 1, in the present embodiment, a push-type switch 50 is disposed on the back side (that is, the lower side) of the upper surface 3 a of the front cabinet 3 in correspondence with the operation key 40. The pressing switch 50 is attached to and electrically connected to the switch flexible substrate 51. The switch flexible substrate 51 is placed on the holder portion 10 of the sub substrate holder 8 and connected to the sub substrate 9. The holder portion 10 is formed with a flat switch receiving portion 11 so as to receive a reaction force when the pressing switch 50 is pressed by the switch receiving portion 11. In the present embodiment, the holder portion 10 is provided in the sub-board holder 8 that is molded separately from the resin portion 30, but may be molded integrally with the resin portion 30.

  As shown in FIG. 5, the operation key 40 is made of, for example, a resin molded product or a metal molded product, and includes a long key top 41 on the left and right sides exposed to the appearance. Although the shape of the key top 41 is not limited to this, in the present application, since the mobile phone 1 is in the shape of a rectangular plate and the operation keys 40 are arranged on the narrow upper surface 3a, the key top 41 is long to the left and right. . A flange portion 42 having a wide outer shape is integrally formed below the key top 41, and the operation key 40 is prevented from being detached from the switch through hole 32.

  A sheet-like elastic member 43 that is long on the left and right is provided on the lower side of the flange portion 42. The shape of the elastic member 43 is not limited to this, but has a shape that is long to the left and right according to the shape that is long to the left and right of the key top 41. The elastic member 43 may be bonded to the lower surface of the key top 41, or may be abutted without being completely bonded. A pusher 44 for pressing the pressing switch 50 is integrally formed at the center of the elastic member 43. The pusher 44 may be integrated with the key top 41. A pair of arm portions 45 are provided on both sides of the pusher 44 so as to extend left and right. The pair of arm portions 45 constitutes a spring portion that urges the flange portion 42 toward the peripheral side of the switch through hole 32. If the shape of the key top 41 is a disc shape, the spring portion may have a round flange shape having a larger outer diameter than the flange portion 42. The pusher 44 and the pair of arm portions 45 are integrally formed with the elastic member 43. This reduces the number of parts and facilitates assembly. The elastic member 43 may be a hard resin molded product such as polycarbonate or a metal part. However, if the elastic member 43 is made of silicone rubber or elastomer, the elastic member 43 has appropriate elasticity and internal damping capability, and is integrated with the key top 41 by two-color molding. It is advantageous to mold. If it is integrally molded, the number of parts is reduced, it is not necessary to bond, and assembly is easy.

  1, the elastic member 43 is configured to receive a reaction force F at a reaction force receiving portion 33 formed to protrude from the front cabinet 3. Even if there is a gap between the lower surface of the pusher 44 and the upper surface of the push-type switch 50 or abuts, almost no force is applied.

  In this way, the elastic member 43 urges the flange portion 42 from the inside of the front cabinet 3 to the peripheral side of the switch through-hole 32 in the opposite direction to the pressing direction of the operation key 40. It is supported by the urging force of the elastic member 43 and the reaction force at the periphery of the switch through-hole 32, and the operation key 40 is stabilized without wobbling.

  Therefore, according to this embodiment, the operation key 40 can be stabilized with a very simple structure.

(Embodiment 2)
FIG. 7 shows an operation key 40 and its peripheral structure according to Embodiment 2 of the present invention, which differs from Embodiment 1 in that the configuration of the reaction force receiving portion 33 ′ is different. In the following embodiments, the same portions as those in FIGS. 1 to 6 are denoted by the same reference numerals, and detailed description thereof is omitted.

  That is, in this embodiment, the reaction force receiving portion 33 ′ that receives the reaction force F of the elastic member 43 is not provided in the front cabinet 3 but is attached to the front cabinet 3 and supports the pressing switch 50. 10 'is provided integrally.

  In this way, the dimensional relationship between the reaction force receiving portion 33 ′ and the switch receiving portion 11 becomes accurate, and it is easy to ensure the dimensional relationship between the pusher 44 formed on the elastic member 43 and the push switch 50.

  Also in this embodiment, since the reaction force F of the elastic member 43 is not applied to the push switch 50 itself, the delicate adjustment of the urging force of the elastic member 43 as in the prior art is not required.

(Embodiment 3)
FIG. 8 shows an operation key 140 and its peripheral structure according to Embodiment 3 of the present invention, which differs from Embodiments 1 and 2 in that the configuration of the elastic member 143 is different.

  That is, in the operation key 140 according to the present embodiment, the pair of arm portions 145 serving as the spring portions extend right side from the flange portion 142 and are integrally formed with the flange portion 142. For example, the arm portion 145 is made of an elastomer, and is integrally formed with the key top 141 by two-color molding. In this way, since the pair of arm portions 145 can be brought to the side of the flange portion 142, the height is lowered up and down by the thickness of the elastic member 43 compared to the above embodiments. Can do.

  In this embodiment, since the pair of arm portions 145 can be integrally formed continuously with the flange portion 142, the number of parts is reduced and the operation key 140 can be easily assembled.

  Also in this embodiment, since the reaction force F of the elastic member 143 is not applied to the push switch 50 itself, the delicate adjustment of the urging force of the elastic member 143 as in the prior art is not required.

(Embodiment 4)
FIG. 9 shows an operation key 140 ′ and its peripheral structure according to Embodiment 4 of the present invention, which differs from Embodiment 3 in that the configuration of the elastic member 143 ′ is different.

  That is, the operation key 140 ′ of the present embodiment is the same as the third embodiment in that the elastic member 143 ′ is integrally formed with the key top 141 ′, but the elastic member 143 ′ of the present embodiment is a flange. The portion 142 ′ is also configured, and the joining area between the elastic member 143 ′ and the key top 141 ′ is larger than that in the third embodiment. The pair of arm portions 145 'are integrally formed with the key top 141' by two-color molding, for example. In this embodiment, since the bonding area is wider than that in the third embodiment, the bonding area may be bonded with an adhesive or the like.

  In the present embodiment, since the pair of arm portions 145 'can be integrally formed continuously with the flange portion 142', the number of parts is reduced and the operation key 140 'can be easily assembled.

  Also in this embodiment, since the reaction force F of the elastic member 143 ′ is not applied to the push switch 50 itself, the delicate adjustment of the urging force of the elastic member 143 ′ is not required.

(Embodiment 5)
FIG. 10 shows an operation key 240 and its peripheral structure according to Embodiment 5 of the present invention, which differs from the above embodiments in that the configuration of the elastic member 243 is different.

  That is, the operation key 240 of the present embodiment is the same as the third and fourth embodiments in that the elastic member 243 is integrally formed with the key top 241, but the elastic member 243 of the present embodiment is different from the key top 141. The projection 243a is coupled to the molding recess 240a formed in the above.

  The protrusion 243a is formed by, for example, silicone rubber or elastomer flowing in during two-color molding with the key top 241, and is firmly coupled to the molding recess 240a. For this reason, the elastic member 243 and the key top 241 are securely coupled as compared with the other embodiments.

  Also in the present embodiment, the pair of arm portions 245 as the spring portions bent downward at the time of molding is bent by the amount of the interference portion A (shown by cross-hatching in FIG. 10A), whereby FIG. The reaction force F is received as shown in FIG. Since the reaction force F of the elastic member 243 is not applied to the push switch 50 itself, the delicate adjustment of the urging force of the elastic member 243 as in the prior art is not required.

(Other embodiments)
The present invention may be configured as follows for each of the above embodiments.

  That is, in each of the above embodiments, the switch through-hole 32 is provided in the front cabinet 3 as a housing. For example, the front side of the switch through-hole 32 is formed by the front cabinet 3 and the back side is the housing. You may make it form with the back side cabinet 4 as. Then, the assembling property of the operation key 40 is improved.

  In the above embodiments, the operation key 40 is the operation key 40 that is long to the left and right, but may have a circular or elliptical key top 41. In that case, the elastic member may be circular or elliptical, and may have a flange-like spring portion instead of the pair of arm portions 45.

  In the above-described embodiment, the electronic device is the mobile phone 1. However, as long as the electronic device has a pressing switch 50 disposed inside the housing with respect to one surface of the housing, the electronic device is a tablet terminal, PHS (Personal Handy-). phone System), PDA (Personal Digital Assistant), personal computer, mobile tool, electronic dictionary, calculator, game machine, etc., small liquid crystal display, liquid crystal television, Blu-ray disc recorder, DVD recorder, etc. .

  In addition, the above embodiment is an essentially preferable illustration, Comprising: It does not intend restrict | limiting the range of this invention, its application thing, or a use. The technical features described in each embodiment can be combined with each other, and a new technical feature can be formed by combining them.

1 Mobile phone (electronic equipment)
2 display section
3 Front cabinet (housing)
3a Top surface
4 Rear cabinet
5 Rear cover
6 Rechargeable battery
7 Circuit board
8 Sub board holder
9 Sub-board
10, 10 'holder
11 Switch receiver
30 Resin part
31 Frame sheet metal
32 Through hole for switch
33, 33 'reaction force receiver
40 operation keys
41 key top
42 Flange
43 Elastic member (sheet-like member)
44 Pusher
45 Arm part (spring part)
50 Press switch
51 Flexible board for switch 140, 140 'Operation key 141, 141' Key top 142, 142 'Flange part 143, 143' Elastic member 145, 145 'Arm part (spring part)
240 Operation Key 240a Molding Recess 241 Key Top 243 Elastic Member 243a Projection 245 Arm

Claims (5)

A push-type switch disposed inside the housing with respect to one surface of the housing;
A flange portion that is contacted from the inside of the housing to the periphery of a switch through-hole formed on one surface of the housing corresponding to the push switch, and is continuously exposed to the flange. An operation key having a key top to perform,
An elastic member provided on the operation key and urging the flange portion toward the peripheral side of the switch through hole;
The elastic member is configured to receive a reaction force at a reaction force receiving portion formed on the housing or a holder portion that is attached to the housing and supports the pressing switch. machine. The electronic device according to claim 1,
The electronic device is characterized in that the elastic member is formed of a sheet-like member formed integrally with a pusher that is interposed between the key top and the push-type switch and presses the push-type switch. The electronic device according to claim 1,
The electronic device according to claim 1, wherein the elastic member includes a spring portion that extends from the flange portion and receives a reaction force at the reaction force receiving portion. The electronic device according to claim 3,
The electronic device is characterized in that the spring portion is formed integrally with the flange portion. In the electronic device according to any one of claims 1 to 4,
The electronic device is characterized in that the elastic member is made of an elastomer or silicone rubber formed integrally with the key top.

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