JP2008053647A - Case of electronic equipment and electronic equipment - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To prevent a gap from occurring on a case by a shock when dropping or the like. <P>SOLUTION: The case 2 of electronic equipment 1 is structured by butting a peripheral wall of a first case structure 3 and a peripheral wall of a second case structure 4, overlapping the peripheral walls on a case mounting substrate 21, and tightening with a screw 12. A screw insertion hole 13 is provided on the first and second case structures 3 and 4 at their butted parts. An internal threaded hole 24 connecting with the hole 13 is provided on the substrate 21. Uneven-shaped first case structure positioning parts 13 which fit with each other for positioning the first case structure on the substrate when the first structure 3 is overlaid on the substrate are provided on the structure 3 and the substrate 21. Second case structure positioning parts which fit with each other for positioning the second structure on the substrate when the second structure is overlaid on the substrate is provided on the structure 4 and the substrate 21. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a housing of an electronic device and an electronic device using the housing.

  As shown in FIG. 20, as a housing 102 of an electronic device, for example, a housing 102 of an electronic device 101 such as a digital still camera, a front-side housing component (hereinafter referred to as a front-side housing) 103 and a rear-side housing What is formed by combining a case component 104 (hereinafter referred to as a rear case) 104 is known.

  As the coupling structure of the front housing 103 and the rear housing 104, the following three structures are mainly known.

  As shown in FIG. 21, the first coupling structure is configured such that the peripheral wall portion 103a of the front side housing 103 and the end portion of the peripheral wall portion 104a of the rear side housing 104 are brought into contact with each other to connect the peripheral wall portion 103a and the peripheral wall portion 104a. The first screw insertion hole (non-screw hole) 106 provided in the front side housing 103 is superposed on the case mounting board 105 provided in the chassis or the like in which the internal components housed in the case 102 are assembled. The first screw 107 is inserted into the first mounting screw 105, the first screw 107 is screwed into the first female screw hole 108 provided in the housing mounting substrate 105, and the front housing 103 is attached to the housing mounting substrate 105. The second screw 110 is inserted into a second screw insertion hole (non-screw hole) 109 provided in the rear housing 104 and the second screw 110 is provided in the housing mounting substrate 105. 2 to the rear female housing 104 fastened to the housing mounting substrate 105.

  In the second coupling structure, as shown in FIG. 22, the first screw 107 of the first coupling structure is reduced by attaching the housing mounting board 105 to the front housing 103 by welding 112. .

  Further, as shown in FIG. 23, the third coupling structure is a state in which the peripheral wall portion 103a of the front-side housing 103 and a part of the peripheral wall portion 104a of the rear-side housing 104 are overlapped (overlapped state). Then, the peripheral wall 103a of the front housing 103 and the peripheral wall 104a of the rear housing 104 are fastened together with a single screw 113.

Although a lens barrel is not attached to the camera casing, a method using screws and positioning recesses and projections has been developed. (For example, refer to Patent Document 1).
JP 7-213953 A

  By the way, in the first coupling structure, the peripheral wall portion 103a of the front-side housing 103 and the peripheral wall portion 104a of the rear-side housing 104 are fastened to the housing mounting board 105 with the first and second screws 107 and 110, respectively. Therefore, the seating surface area of the two screws is required, which is disadvantageous for making the camera smaller and thinner.

  In the second coupling structure, since the front housing 103 is welded 112 to the housing mounting substrate 105, only the rear housing 104 needs to be fastened with the first screw 110. Compared to the use, it is possible to reduce the screw seating area, which is advantageous for reducing the size and thickness of the camera, but the problem is that the cost for welding is high and the welding strength is likely to vary. is there.

  In the third coupling structure, since the peripheral wall portion 103a of the front side housing 103 and the peripheral wall portion 104a of the rear side housing 104 are overlapped and fastened together, they can be coupled with one screw 113. On the other hand, there is a problem in that the portion where the peripheral wall portion 103a of the front housing 103 and the peripheral wall portion 104a of the rear housing 104 are overlapped becomes thick, and the part accommodation space in the housing is reduced. there were.

  Further, the first to third coupling structures are configured such that when a strong external force such as an impact is applied to the housing 102 by accidentally dropping the camera, the peripheral wall portion 103a of the front housing 103 and the rear housing. There is a common problem that the gap δ at the abutting portion of the peripheral wall portion 104a of the 104 increases. This is because the screw holes 108, etc. are screwed into the female screw holes 108, etc., due to deviations (errors) between the positions of the screw insertion holes 106, etc. provided in the front-side housing 103 and the positions of the female screw holes 108, etc. provided in the housing mounting board 105. As a method for preventing the screw from being screwed, a method in which the diameter of the screw insertion hole 106 or the like is made larger than the screw diameter of the female medium 108 or the like is widely used. In this case, the casing is dropped. For example, when a strong impact is applied to the housing, the screw moves by the difference between the screw hole diameter and the screw diameter.

  The object of the present invention is to solve the problems of the conventional first to third coupling structures, and to solve the problems common to the first to third coupling structures, such as widening the gap when dropped. An object of the present invention is to provide a housing for a solved electronic device.

In the present invention, the end of the first casing component and the end of the second casing component that constitute the casing are abutted and overlapped on the casing mounting substrate, and the ends are abutted to each other. A housing of an electronic device configured by fastening the end portions of the first and second housing components on the housing mounting substrate with screws,
The first and second housing components are provided with screw insertion holes for inserting the screws so as to face the abutting portions, and female screws for screwing the screws through the screw insertion holes on the housing mounting substrate. A hole is provided, and when the first casing component is superimposed on the casing mounting substrate, the first casing configuration and the casing mounting substrate are fitted to each other to fit together. A concave-convex first casing component positioning unit is provided for positioning the portion on the casing mounting substrate, and the second casing component is mounted on the second casing component and the casing mounting substrate. A second housing component positioning unit is provided that fits each other when positioned on the body mounting substrate and positions the second housing component on the housing mounting substrate.

  When the first housing component is superposed on the housing mounting substrate, the uneven first housing component positioning portion provided on the overlapping surface of the first housing component and the housing mounting substrate is provided. The first housing component is positioned by fitting. In addition, when the second casing component is overlaid on the casing mounting substrate, the concave and convex second casing component positioning provided on the overlapping surface of the second casing component and the casing mounting substrate is provided. The parts are fitted and the second housing component is positioned, and the end of the first housing component and the end of the second housing component are brought into contact with each other. Then, a screw is inserted from a screw insertion hole provided facing the abutting portion between the end of the first casing component and the end of the second casing component, and the screw is attached to the casing mounting substrate. When screwed into the provided female screw hole and tightened, the first and second housing components are pressed onto the housing mounting substrate and fixed by the head of the screw.

  The first and second casing components are pressed onto the casing mounting substrate by the heads of the screws, and the first and second casing components rise from the casing mounting substrate. Be blocked. Therefore, it is possible to reliably prevent the fitting of the uneven positioning portions fitting to each other from coming off. Further, there is a risk that the screw cannot be screwed into the female screw hole due to a deviation (error) between the position of the screw insertion hole provided in the housing component and the position of the female screw hole provided in the housing mounting board. In order to avoid this, even when the diameter of the screw insertion hole is larger than the screw diameter of the female medium, the first casing component and the second casing component are the first casing component. Positioning is performed by the positioning unit and the first housing component positioning unit, so that the butt portion between the first housing component and the second housing component even when a strong impact is applied due to dropping or the like Can be prevented from spreading.

  1 to 14 show a first embodiment. In this embodiment, the electronic device is configured as a card-type digital still camera (hereinafter simply referred to as a camera). 1 is a perspective view of the camera 1 viewed from the front side, FIG. 2 is a perspective view of the camera 1 viewed from the back side, FIG. 3 is a perspective view of the camera 1 viewed from the bottom side, and FIG. FIG. 5 is an exploded perspective view of FIG.

  As shown in FIGS. 1 to 4, the case 2 of the camera 1 includes first and second case components (hereinafter, the first case component is referred to as a front case component, 2 is referred to as a rear-side casing component).

  As shown in FIG. 5, the front-side housing constituting unit 3 includes a rectangular main surface portion 3 a and a peripheral wall portion 3 b provided on the peripheral edge of the main surface portion 3 a. A lens barrel 5 and a barrier (cover) 6 covering the lens barrel 5 are attached to the main surface portion 3a so as to be slidable in the vertical direction. Similarly to the front-side housing component 3, the rear-side housing component 4 includes a rectangular main surface portion 4a and a peripheral wall portion 4b provided on the periphery of the main surface portion 4a. The main surface portion 4a is provided with a transparent display window 7 facing a display portion such as a liquid crystal or an organic EL attached to one side surface of the chassis described below, and a switch is provided on the side of the display window 7. A substrate 8 is arranged. As shown in FIG. 2, various operation buttons 9 a, 9 b, 9 c and the like are arranged on the back surface, top surface, and side surface of the housing 2.

  As shown in FIG. 4, a butted portion (hereinafter referred to as a parting line portion) between the peripheral wall portion 3 b of the front-side housing constituting portion 3 and the peripheral wall portion 4 b of the rear-side housing constituting portion 4 constituting the bottom surface of the housing 2. 11 is a first parting line that extends substantially parallel to the main surface 4a at a position closer to the main surface 4a of the rear-side casing component 4 than to the main surface 3a of the front-side casing component 3. Part 11a, a second parting line portion 11b extending from one end of the first parting line 11a to the main surface 4a side of the rear side housing component 4 with an inclination angle of about 45 °, and a second parting line And a third parting line portion 11c extending substantially in parallel with the main surface 4a of the rear-side casing constituting portion 4 from one end portion of the portion 11b.

  As shown in an enlarged view in FIG. 6, the second parting line portion 11 b includes the peripheral wall portion 3 b of the front-side casing component portion 3 and the peripheral wall portion 4 b of the rear-side casing component portion 4. A screw insertion hole (non-screw hole) 13 for inserting a screw 12 for fastening to is provided. The screw insertion hole 13 is provided with a substantially semicircular hole 13a in the peripheral wall portion 3b of the front-side housing component 3, and a substantially semicircular hole 13a is provided in the peripheral wall 4b of the rear-side housing component 4. It is formed by abutting the holes 13a and 13b.

  Further, the first and second positioning portions 14 are symmetric with respect to the screw insertion hole 13 on the peripheral wall portion 3b of the front-side casing component portion 3 and the peripheral wall portion 4b of the rear-side casing component portion 4. , 15 are provided. The first positioning unit 14 positions the front-side casing component 3, and the second positioning unit 15 positions the rear-side casing component 4.

  As shown in FIG. 7, the first positioning portion 14 includes a first convex portion 16 provided on the peripheral wall portion 3 b of the front side casing constituting portion 3 and a casing for fitting the first convex portion 16. The second positioning portion 15 includes a second convex portion 18 provided on the peripheral wall portion 4b of the rear side housing constituting portion 4, and the second concave portion 17 provided on the mounting substrate 21. And a second concave portion 19 provided in the housing mounting substrate 21 so as to fit the convex portion 18.

  The first convex portion 16 is formed in a circular boss shape by denting the outer surface side of the peripheral wall portion 3b of the front side housing component 3 and projecting the inner surface side, and the first concave portion 17 The mounting substrate 21 is formed in a round hole shape by punching it into a circle. Similarly, the second convex portion 17 is formed in a circular boss shape by denting the outer surface side of the peripheral wall portion 4b of the front side housing constituting portion 4 and projecting the inner surface side, and the second concave portion 19 is formed as follows. The casing mounting substrate 21 is formed into a round hole by punching it into a circle.

  The housing mounting substrate 21 supports the peripheral wall portion 3b of the front-side housing constituent portion 3 and the peripheral wall portion 4b of the rear-side housing constituent portion 4 from the inner surface side, and couples them together. It is formed as a part of the chassis 23 (see FIG. 5) of the internal chassis block portion 22 housed in the housing.

  As shown in FIG. 7, in addition to the first and second recesses 17 and 19, the casing mounting substrate 21 includes a peripheral wall 3 b of the front-side casing component 3 and a peripheral wall of the rear-side casing component 4. A female screw hole 24 for screwing the screw 12 facing the parting line 11 of the portion 4b is provided.

  As shown in FIG. 5, the chassis 23 has an imaging lens 31, an AF illuminator 32, a flash device 33, a capacitor 34, and a battery housing on the main surface on the front side where the front side housing component 3 is covered. 35, a memory card storage unit 36, a main board 37, and the like, and a display unit such as liquid crystal or organic EL (not shown) A lens unit or the like is arranged.

  Next, assembly of the housing 2 will be described. First, as shown in FIG. 8, the front chassis component 3 is covered on the front side of the internal chassis block 22, and the rear cabinet component 4 is covered on the rear side. The internal chassis block portion 22 is sandwiched between 3 and the rear-side housing constituting portion 4.

  Then, as shown in FIG. 7, the peripheral wall 3 b of the front-side casing component 3 and the peripheral wall 4 b of the rear-side casing component 4 are overlapped on the casing mounting substrate 21 to form a front-side casing configuration. The first convex portion 16 provided on the peripheral wall portion 3b of the portion 3 is fitted into the first concave portion 17 provided on the housing mounting substrate 21 so as to position the front side housing constituent portion 3, and the rear side housing configuration. The second convex portion 18 provided on the peripheral wall portion 4 b of the portion 4 is fitted into the second concave portion 19 provided on the housing mounting substrate 21 to position the rear side housing constituent portion 4. As a result, the end of the peripheral wall 3b of the front housing component 3 and the end of the peripheral wall 4b of the rear housing component 4 are brought into contact with each other, and the front housing component 3 A circular screw insertion hole 13 is formed by the provided semicircular hole 13 a and the semicircular hole 13 b provided in the rear-side housing component 4. A female screw hole 24 provided in the housing mounting substrate 21 is located substantially directly below the screw insertion hole 13.

  Next, as shown in FIG. 9, if the tip of the screw 12 is inserted into the screw insertion hole 13 and screwed into the female screw hole 24 and tightened, the front side housing is formed on the lower surface of the head 12 a of the screw 12. The component 3 and the rear case component 4 are simultaneously pressed and pressed against the case mounting substrate 21, and the front case component 3 and the rear case component 4 are connected to the case attachment substrate 21. Secure on top.

  In the embodiment, as shown in FIG. 6, an inclined second parting line portion 11 b is formed in a part of the parting line portion 11, and the second parting line portion 11 b is connected to the screw 12. Although the case where the first and second positioning portions 14 and 15 are fixed is shown, other portions may be fixed by the screw 12 and the first and second positioning portions 14 and 15. . Further, as shown in FIG. 10, the parting line portion 11 is arranged in a straight line at an intermediate position between the main surface 3a of the front-side housing constituting portion 3 and the main surface 4a of the rear-side housing constituting portion 4. The first and second positioning portions 14 and 15 may be arranged in a direction substantially orthogonal to the ring line portion 11. In addition, as shown in FIG. 11, the center position of the screw insertion hole 13 may be offset (eccentric) from the front side housing component 3. However, it is desirable that the offset amount is within a range that does not hinder both the front housing component 3 and the rear housing component 4 from being pressed against the housing mounting substrate 21 with the screw 12.

  Further, as shown in FIG. 12, by forming the outer peripheral portions of the tip surfaces 16a, 18a of the convex portions 16, 18 into rounded surfaces 16b, 18b or inclined surfaces by chamfering, the projections 16, 18 are formed into the concave portions 17, 19 may be easily inserted. Further, as shown in FIG. 13, the outer peripheral surfaces of the convex portions 16 and 18 and the inner peripheral surfaces of the concave portions 17 and 19 are formed into conical tapered surfaces whose diameter decreases toward the tip side. The parts 16 and 18 may be easily inserted into the recesses 17 and 19, and the centering may be automatically performed by fitting the protrusions 16 and 18 into the recesses 17 and 19.

  In the above embodiment, as shown in FIG. 7, projections 16 and 18 are provided as projections 16 and 18 on the front-side casing component 3 and rear-side casing component 4, and recesses 17 and 19 are provided on the casing mounting substrate 21. Although the case where the projection fitting hole is provided is shown, conversely, as shown in FIG. 14, the front side housing component 3 and the rear side housing component 4 are fitted into the recesses 17 and 19 as the projections. A hole may be provided, and the protrusions 16 and 18 may be provided on the housing mounting substrate 21. In this way, when the front-side housing component 3 and the rear-side housing component 4 are provided with projection fitting holes as the recesses 17 and 19, the front-side housing component 3 and the rear-side cabinet through these projection fitting holes. Since the positions of the convex portions 16 and 18 can be visually recognized from the outside of the body constituting portion 4, the operation of inserting the convex portions 16 and 18 into the concave portions 17 and 19 is facilitated, and the convex portions 16 and 18 are recessed. It can be easily confirmed from the outside of the front-side casing component 3 and the rear-side casing component 4 whether or not it is inserted into the protrusion fitting hole.

  15 and 16 show a second embodiment. In this embodiment, the pair of leg portions 41, 42 provided at one end and the other end in the longitudinal direction of the bottom surface 2 a of the housing 2 are connected to the first and second positioning portions 14, 15. The case where it uses as the 1st, 2nd recessed parts 17 and 19 is shown.

  As shown in FIG. 16, the leg portion 41 is formed by denting the inner surface side of the peripheral wall portion 3b of the front side housing constituting portion 3 constituting the bottom surface 2a of the housing 2 and projecting the outer surface side. The leg portion 42 is formed by denting the inner surface side of the peripheral wall portion 4b of the rear side housing constituting portion 4 and projecting the outer surface side. And the 1st, 2nd convex parts 16 and 18 provided in the housing | casing attachment board | substrate 21 are fitted by the said recessed part 41a, 42a inside the said leg part 41 and the leg part 42, and a front side housing | casing structure part. 3 and the rear-side casing component 4 are positioned, and the front-side casing component 3 and the rear-side casing component 4 are placed on the casing mounting substrate 21 by screws 12. Tightened and fixed. Other configurations are the same as those in the first embodiment, and thus redundant description is omitted.

  In the second embodiment, since the leg portions 41 and 42 provided on the bottom surface of the housing 2 are used as the concave portions 17 and 19 of the first and second positioning portions 14 and 15, respectively, as in the first embodiment. There is an effect that it is not necessary to form the recesses 17 and 19 separately.

  17 to 19 show a third embodiment. In this embodiment, as shown in FIGS. 17 and 18, the first positioning portion 14 and the second positioning portion 15 are formed in a semicircular shape centered on the screw 12. As shown in FIG. 19, the first positioning portion 14 is provided on the semicircular first convex portion 41 provided on the peripheral wall portion 3 b of the front-side housing constituting portion 3 and the housing mounting substrate 21. And a circular recess 42 formed. The second positioning portion 15 includes the semicircular second convex portion 43 provided on the peripheral wall portion 4b of the front side housing constituting portion 4 and the circular shape provided on the housing mounting substrate 21. The concave portion 42 is formed.

  The first convex portion 41 and the second convex portion 43 are substantially circular when the end portions of the peripheral wall portion 4b of the front-side casing component 4 and the peripheral wall portion 4b of the rear-side casing component 4 are abutted. Become. Further, the concave portion 42 is formed to have a diameter slightly larger than the circular shape obtained by abutting the first convex portion 41 and the second convex portion 43 with the female screw hole 24 as the center.

  And as shown in FIG. 19, the said 1st convex part 41 and the 2nd convex part 43 are inserted in the said recessed part 42, The surrounding wall part 3b of the front side housing | casing structure part 3 and the rear side housing | casing structural part with the screw | thread 12 The peripheral wall 4b of 4 is pressed against the housing mounting substrate 21 and fixed. Other configurations are substantially the same as those in the first embodiment, and thus redundant description is omitted.

  In the third embodiment, since the first and second positioning portions 14 and 15 are arranged outside the screw 12 so as to surround the screw 12, the first and second positioning portions 14 and 15 are arranged. The presence of 15 can be made inconspicuous.

  In each of the above embodiments, a camera is described as an example of an electronic device. However, the electronic device of the present invention is an electronic device such as a mobile phone or a portable game machine, in addition to an imaging device such as a digital camera. Widely applied to equipment.

The perspective view which looked at the camera of 1st Embodiment from the front side. The perspective view which looked at the camera of 1st Embodiment from the back side. The perspective view which looked at the camera of 1st Embodiment from the bottom face side. The bottom view of the camera of 1st Embodiment. The disassembled perspective view of the camera of 1st Embodiment. The enlarged perspective view of the principal part. AA sectional drawing of FIG. Sectional drawing of the state which pinched | interposed the internal chassis part in the 1st, 2nd housing | casing structure part. Sectional drawing of the state which fastened the 1st, 2nd housing structure part with the screw | thread. Explanatory drawing of another Example. Explanatory drawing of another Example. Sectional drawing of another Example. Sectional drawing of another Example. Sectional drawing of another Example. The perspective view of the camera of 2nd Embodiment. AA sectional drawing of FIG. The perspective view of the principal part of the camera of 3rd Embodiment. The disassembled perspective view of the principal part of the camera of 3rd Embodiment. Sectional drawing of the principal part of the camera of 3rd Embodiment. The perspective view which shows a prior art example. AA sectional drawing of FIG. Sectional drawing of another prior art example. Sectional drawing of another prior art example.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Electronic device (digital still camera), 2 ... Housing | casing, 3 ... 1st housing | casing structure part (front side housing | casing structural part), 3a ... Peripheral wall part, 4 ... 2nd housing | casing structure part (rear housing | casing) Component part), 4a ... peripheral wall part, 11 ... parting line, 12 ... screw, 13 ... screw insertion hole, 14 ... first positioning part, 15 ... second positioning part, 16 ... first convex part, 17 ... 1st recessed part, 18 ... 2nd convex part, 19 ... 2nd recessed part, 21 ... Housing mounting board, 24 ... Female screw hole.

Claims (7)

The end of the first casing component and the end of the second casing component that make up the casing are butted and superimposed on the casing mounting substrate, and the first and second sections that have been butted together 2 is a housing of an electronic device configured by fastening an end of the housing component onto the housing mounting substrate with a screw,
The first and second housing components include screw insertion holes for inserting the screws facing the abutting portions, and the housing mounting board has female screw holes for screwing the screws through the screw insertion holes. The first housing component and the housing mounting substrate are fitted together when the first housing component is overlaid on the housing mounting substrate. A first housing component positioning unit that positions the first housing component on the housing mounting substrate, and the second housing component and the housing mounting substrate include the second housing component on the housing mounting substrate. An electronic device comprising: a second housing component positioning portion that fits to each other when positioned on each other and positions the second housing component on the housing mounting substrate. Enclosure. The first housing component positioning portion includes a first convex portion provided on the first housing component and a first concave portion provided on the housing mounting substrate and fitted with the first convex portion. And the second casing component positioning unit is provided with a second convex part provided on the second casing constituent part, and the second convex part provided on the casing mounting substrate. The housing of the electronic device according to claim 1, comprising a second recessed portion to be fitted. The first casing component positioning unit includes a first recess provided in the first casing component, and a first protrusion provided on the casing mounting substrate and fitted in the first recess. And the second housing component positioning portion is provided on the second housing component, and is fitted on the second recess provided on the housing mounting substrate. The housing of the electronic device according to claim 1, further comprising a second convex portion. 2. The electronic device according to claim 1, wherein the first housing component positioning unit and the second housing component positioning unit are arranged at substantially point-symmetrical positions around the female screw hole. Equipment enclosure. The first casing component positioning unit and the second casing component positioning unit are substantially centered on the butted portion of the end of the first casing component and the end of the second casing component. The casing of the electronic device according to claim 1, wherein the casing is arranged in a line symmetrical position. The first and second recesses provided in the first and second casing components are configured by casing legs that are formed to protrude from the bottom surfaces of the first and second casing components. The casing of the electronic device according to claim 3, wherein the casing is an electronic device. The end of the first casing component and the end of the second casing component that make up the casing are abutted and superimposed on the casing mounting substrate, and the ends are abutted to each other. In an electronic device that constitutes a casing by fastening the end of the two casing constituent parts on the casing mounting board with screws,
The first and second housing components include screw insertion holes for inserting the screws facing the abutting portions, and the housing mounting board has female screw holes for screwing the screws through the screw insertion holes. The first housing component and the housing mounting substrate are fitted together when the first housing component is overlaid on the housing mounting substrate. A first housing component positioning unit that positions the first housing component on the housing mounting substrate, and the second housing component and the housing mounting substrate include the second housing component on the housing mounting substrate. An electronic apparatus comprising: a second housing component positioning portion that fits each other when positioned on each other and positions the second housing component on the housing mounting substrate.

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