JP6833416B2 - Electronics - Google Patents

Description

The present invention relates to an electronic device including an imaging device such as a digital single-lens reflex camera, and particularly to a holding structure of an operation button provided in the electronic device.

As a holding structure for operation buttons provided in an electronic device such as a digital single-lens reflex camera, for example, the structure shown in FIG. 8 is known (first conventional example). FIG. 8A is a cross-sectional view of a main part showing a state in which the exterior cover 102 holding the operation button 104 is attached to the device body 109, and FIG. 8B shows the exterior cover 102 holding the operation button 104 attached to the device body 109. It is sectional drawing of the main part which shows the state of attachment.

In FIG. 8, the operation button 104 is provided with a push shaft 106 for pressing the switch 110 on the device main body 109 side at the center of the key top 104a, and two locking hooks 105 are provided on both sides of the push shaft 106 in the radial direction. Are provided so as to face each other in the radial direction. The locking hook 105 is movably inserted through the hole 107 formed in the exterior cover 102 in the axial direction, and is locked to the exterior cover 102 to prevent it from coming off in the state shown in FIG. 8A. Has been made.

Then, by pressing the operation button 104 in this state, the switch 110 is pressed by the push shaft 106. At this time, in order to prevent the operation button 104 from being pushed more than necessary, the key top 104a comes into contact with the exterior cover 102, and the pushing operation more than necessary is restricted.

That is, in the state shown in FIG. 8A in which the locking hook 105 is locked to the exterior cover 102, a gap 111 is provided between the key top 104a and the exterior cover 102, and the gap 111 provides the gap 111. The push stroke of the operation button 104 is secured.

Further, as a second conventional example, a pressing type switch device including an exterior cover having a holding portion, a button member, and a receiving member fixed to the exterior cover while holding the button member between the exterior covers. It has been proposed (Patent Document 1). In this proposal, the button member is formed with an operation button portion that can be pressed, an engaging portion that engages with the holding portion, and a support arm that connects the operation button portion and the engaging portion. A convex portion that comes into contact with the member is provided.

Then, when the receiving member is fixed to the exterior cover, the portion between the engaging portion and the convex portion of the support arm is elastically deformed and fixed to the exterior cover, thereby pushing the operation button portion. Prevents rattling during operation.

Japanese Unexamined Patent Publication No. 2013-182665

However, in the first conventional example, as shown in FIG. 8B, when the exterior cover 102 is attached to the device main body 109 with the gap 111 being zero, the push shaft 106 of the operation button 104 is the switch 110 or It may interfere with the device body 109. As a result, the assembly workability is lowered, and the switch 110 and the device main body 109 may be damaged. Further, since the gap 111 is required, it is difficult to suppress the amount of protrusion of the operation button 104 from the surface of the exterior cover 102, the appearance shape of the operation button 104 becomes large, and the operation button 104 is pressed for operation. At that time, the operation button 104 rattles and the operability deteriorates. Further, since the exterior cover 102 is formed with a hole 107 through which the locking hook 105 of the operation button 104 is inserted, it is difficult to improve the sealing performance.

On the other hand, in the second conventional example, since the receiving member that elastically deforms the portion between the engaging portion and the convex portion of the support arm is composed of an exterior cover and another member, the number of parts increases. The cost will increase by the amount.

Therefore, the present invention provides a low-cost operation button holding structure that does not damage the device body or the like during assembly, reduces the size of the appearance of the operation button and improves operability, and further improves the sealing performance. The purpose is to provide electronic devices that can be realized in.

In order to achieve the above object, the present invention is an electronic device including an exterior cover for holding a pressing member, and the pressing member is inserted into a hole formed in the exterior cover from the back surface side of the exterior cover. A key top that is exposed to the outside, a flange portion that is provided at the opposite end of the key top and engages with the back surface of the exterior cover, and a switch provided on the main body of the device are pressed by pressing. The support arm includes an operation button having a push shaft and a support arm having a positioning means extending from the flange portion along the back surface of the exterior cover and positioning with respect to the exterior cover. Engagement portions are provided at a plurality of locations in the extension direction, and the support arm has a plurality of engaged portions in which the plurality of engagement portions are provided on the exterior cover according to the engagement portions at the plurality of locations. The support arm is held by the exterior cover in a state of being sandwiched between the two and elastically deformed, and the support arm includes a plurality of arm portions extending from the flange portion, and one of the plurality of arm portions is It is characterized in that it extends along a line direction passing through the center of the operation button.

According to the present invention, a low-cost operation button holding structure that does not damage the device body or the like during assembly, reduces the size of the appearance of the operation button and improves operability, and further improves the sealing performance. It is possible to provide an electronic device realized by.

(A) is a perspective view of a digital single-lens reflex camera which is an example of an embodiment of the electronic device of the present invention as viewed from the front side, and (b) is a view of the digital single-lens reflex camera shown in (a) as viewed from the top side. is there. It is an exploded perspective view which cut out the front side cover around the narrowing-down button shown in FIG. 1A. It is a perspective view which saw the button member and the front side cover shown in FIG. 2 from the back side. It is a perspective view seen from the direction of arrow A of FIG. It is the figure which looked at the state which the button member was held by the front side cover from the back side of the front side cover. FIG. 5 is a cross-sectional view taken along line XX of FIG. It is a figure explaining the method of incorporating a button member into a front side cover. It is sectional drawing of the main part which shows an example of the holding structure of the conventional operation button.

Hereinafter, an example of the embodiment of the present invention will be described with reference to the drawings.

FIG. 1A is a perspective view of a digital single-lens reflex camera which is an example of an embodiment of the electronic device of the present invention as viewed from the front side (subject side), and FIG. 1B is a digital single-lens reflex camera shown in FIG. 1A. It is the figure which looked at the reflex camera from the upper surface side. In the present embodiment, a digital single-lens reflex camera, which is an example of an imaging device, is exemplified as an electronic device, but the present invention is not limited to this.

As shown in FIG. 1, the digital single-lens reflex camera of the present embodiment constitutes the exterior of the camera body 1 by the front side cover 2, the upper surface side cover 3, and the back side cover 4, which are made of resin or the like, respectively. A mode dial 7, a power switch 5, a release button 6, a main electronic dial 8, a pop-up strobe device 9, and the like are provided on the upper surface of the camera body 1. On the front side of the camera body 1, a mount portion 11 to which a lens unit (not shown) is detachably mounted is provided. The camera body 1 corresponds to an example of the device body of the present invention, and the front cover 2 corresponds to an example of the exterior cover of the present invention.

A grip portion 10 gripped by the user is provided on the left side of the mount portion 11 when viewed from the front side of the camera body 1. When viewed from the front side of the camera body 1, an unlock button 12 for attaching / detaching the lens unit is provided at the center on the right side of the mount portion 11, and a pop-up button 13 of the strobe device 9 is provided at the upper right side. A narrowing-down button 14 is provided at the lower right side.

When the user presses the aperture button 14 during shooting, the shooting lens is stopped down with the aperture value set at that time, and the actual focus range (depth of field) is confirmed on the viewfinder. Is possible. The narrowing down button 14 corresponds to an example of the operation button of the present invention.

FIG. 2 is an exploded perspective view of the front side cover 2 around the narrowing-down button 14 shown in FIG. 1A. As shown in FIG. 2, a cylindrical surface 20 is formed substantially coaxially with the mount portion 11 on the back side of the mount portion 11 of the camera body 1, and a positioning hole 25 of the flexible substrate 21 is press-fitted into the cylindrical surface 20. The positioning convex portion 24 is provided so as to project.

The flexible substrate 21 is mounted with a switch 22 that is pressed by a push shaft 29 (see FIG. 3) of the narrowing-down button 14 that constitutes the button member 14A that is a pressing member. When the key top 26 of the narrowing-down button 14 is pressed, the switch 22 is pressed by the push shaft 29, whereby the detection signal is output from the switch 22 to a signal processing circuit (not shown) to perform predetermined signal processing. In the present embodiment, the key top 26 is formed in a substantially cylindrical shape, and the direction of the pressing operation thereof is a direction substantially orthogonal to the optical axis direction of the lens unit.

A flange portion 28 is formed at the end of the narrowing-down button 14 on the opposite side of the key top 26. By inserting the key top 26 from the back surface side of the front side cover 2 into the hole portion 27 formed in the front side cover 2, the key top 26 is exposed to the outside. At this time, the flange portion 28 engages with the back surface of the front side cover 2, thereby preventing light rays, water droplets, dust, etc. from entering the camera body 1 from the outside, improving the sealing performance and narrowing down. The button 14 is prevented from coming off.

FIG. 3 is a perspective view of the button member 14A and the front side cover 2, which are the pressing members shown in FIG. 2, as viewed from the back side. FIG. 4 is a perspective view seen from the direction of arrow A in FIG. In FIG. 3, the button member 14A is made of resin or the like, and a support arm 30 having a plurality of arm portions 30a and 30b extends from the flange portion 28 of the narrowing button 14 constituting the button member 14A. .. Of the arm portions 30a and 30b, one arm portion 30a is extended along a line direction passing through the center of the narrowing button 14 in order to stabilize the position of the narrowing button 14, and the other arm portion 30b is a flange. It extends along the tangential direction of the outer peripheral portion of the portion 28.

The arm portions 30a and 30b are arranged substantially parallel to each other, and the opening 400 is formed between the arm portions 30a and 30b to facilitate elastic deformation of the arm portions 30a and 30b, which will be described later. The sex (see FIG. 7) is improved. Further, the support arm 30 is formed by being bent by approximately 90 ° in the middle along the back surface of the front side cover 2.

The tip portions of the arm portions 30a and 30b are connected to the engaging portion 37, an engaging portion 36 is provided on the tip end side of the engaging portion 37, and the engaging portion 36 and the engaging portion 37 are separated from each other. A positioning groove portion 31 that engages with the positioning portion 32 provided on the front side cover 2 is formed. Further, as shown in FIG. 4, the arm portions 30a and 30b are provided with engaging portions 38 at positions of the bent portions 39, respectively. Then, the engaging portions 36, 37, and 38 are brought into contact with and held by the engaged portions 33, 34, and 35 provided on the front side cover 2, respectively (see FIG. 6).

FIG. 5 is a view of the state in which the button member 14A is held by the front side cover 2 as viewed from the back side of the front side cover 2. FIG. 6 is a cross-sectional view taken along line XX of FIG. In the state where the button member 14A is held by the front side cover 2, as shown in FIG. 6, the engaging portion 36 of the button member 14A is pressed by the engaged portion 33 of the front side cover 2 in the direction of arrow B. Receive power. At this time, a force that rotates in the direction of arrow C is applied to the narrowing-down button 14, but the engaging portion 38 abuts against the engaged portion 35 and is held while maintaining the urging force with the engaging portion 37 as a fulcrum. To.

That is, in the support arm 30 of the button member 14A, the engaging portions 36 to 38 provided at a plurality of positions in the extending direction are between the engaged portions 33 and 35 of the front side cover 2 and the engaged portions 34. It is held in a stable position in a state of being sandwiched and elastically deformed. Therefore, when the front side cover 2 holding the button member 14A is incorporated, it is possible to prevent problems such as the push shaft 29 of the narrowing-down button 14 interfering with the switch 22 and the camera body 1 and being damaged. ..

Further, the engaging portion 38 is provided at the position of the bent portion 39 of the arm portions 30a and 30b, respectively, and the bent portion 39 is arranged on a line passing through the center of the narrowing button 14. Therefore, even if the arm portions 30a, 30b and the like are elastically deformed, no force is applied to the narrowing button 14 in the tilting direction, so that the key top 26 of the narrowing button 14 does not tilt. Further, when the key top 26 is pressed, the arm portions 30a and 30b are elastically deformed with the bent portion 39 as a fulcrum. However, since the direction of this elastic deformation and the direction of the key top 26 pressing operation are the same, the key Operability when pushing and operating the top 26 is improved.

Next, a method of incorporating the button member 14A into the front cover 2 will be described with reference to FIGS. 3, 4, and 7. FIG. 7A is a perspective view of the state in which the key top 26 of the narrowing-down button 14 is inserted into the hole 27 of the front side cover 2 as viewed from the back side of the front side cover 2. FIG. 7B is a perspective view of the state immediately before the positioning groove portion 31 of the button member 14A engages with the positioning portion 32 of the front side cover 2 as viewed from the back side of the front side cover 2. FIG. 7C is a perspective view of the state in which the positioning groove portion 31 of the button member 14A is engaged with the positioning portion 32 of the front side cover 2 as viewed from the back side of the front side cover 2.

First, as shown in FIG. 7A, the arm portions 30a and 30b are sandwiched between tweezers 40 and the like, and the key top 26 is inserted into the hole portion 27 of the front side cover in a posture in which the positioning groove portion 31 does not interfere with the front side cover 2. To do.

Next, with the arm portions 30a and 30b sandwiched between tweezers 40 and the like, the narrowing button 14 is rotated in the direction of the arrow in FIG. 7A, and positioning is performed as shown in FIGS. 7B and 7C. The groove portion 31 gets over the positioning portion 32 of the front side cover 2 and engages with the positioning portion 32.

At this time, the arm portions 30a and 30b are elastically deformed in the direction of the arrow in FIG. 7B with tweezers 40 or the like so that the positioning groove portion 31 gets over the positioning portion 32 of the front side cover 2. When the arm portions 30a and 30b are elastically deformed, the arm portions 30a and 30b are made of resin or the like. Therefore, if the tweezers 40 slip, workability is reduced, but the arm portions 30a and 30b have stopper portions. By forming 41, the tweezers 40 are prevented from slipping.

As described above, in the present embodiment, the camera body 1 and the like are not damaged during assembly, the external shape of the narrowing button 14 is reduced in size and operability is improved, and the sealing performance can be improved. The holding structure of the button 14 can be realized at low cost.

The configuration of the present invention is not limited to that illustrated in the above embodiment, and the material, shape, dimensions, form, number, arrangement location, etc. can be appropriately changed as long as the gist of the present invention is not deviated. Is.

For example, in the above embodiment, a digital single-lens reflex camera with a detachable lens unit is exemplified as an electronic device, but the present invention is applied to an electronic device other than a compact digital camera or an imaging device having a built-in retractable lens. May be good.

1 Camera body 2 Front cover 14 Narrowing button 14A Button member 22 Switch 26 Key top 27 Hole 28 Flange 29 Push shaft 30 Support arm 30a, 30b Arm 33 to 35 Engagement 36 to 38 Engagement

Claims (4)

An electronic device provided with an exterior cover that holds a pressing member.
The pressing member is provided at a key top that is inserted into a hole formed in the exterior cover from the back surface side of the exterior cover and is exposed to the outside, and is provided at an end opposite to the key top and is provided at the back surface of the exterior cover. An operation button having a flange portion engaged with the flange portion and a push shaft for pressing a switch provided on the main body of the device by pushing operation, and an operation button extending from the flange portion along the back surface of the exterior cover, the exterior cover. With a support arm having positioning means positioned with respect to
The support arm is provided with engaging portions at a plurality of locations in the extending direction.
The support arm is held by the exterior cover in a state in which the plurality of engaging portions are sandwiched between a plurality of engaged portions provided on the exterior cover according to the plurality of engaging portions and elastically deformed. It is,
The support arm includes a plurality of arm portions extending from the flange portion.
An electronic device characterized in that one of the plurality of arm portions extends along a line direction passing through the center of the operation button. The electronic device according to claim 1, wherein the key top is formed in a substantially cylindrical shape. The electronic device according to claim 1 or 2 , wherein the plurality of arm portions are extended in a bent state in the middle. The device body is a camera body to which a lens unit is mounted, and the direction of pressing the key top is substantially orthogonal to the optical axis direction of the lens unit. The electronic device according to any one of 3.

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