JP4191104B2 - Electronic equipment housing structure - Google Patents

Description

  The present invention relates to a case structure of an electronic device such as a communication device that performs information communication using a telephone line, particularly a type that is used in a vertical type or a horizontal type with a front panel attached to the front of the case. The present invention relates to a housing structure of electronic equipment.

  The conventional housing structure of this type of electronic device is formed by superposing a box-shaped lower case with an upper surface opened and a box-shaped upper case with an opened lower surface facing each other. When assembling, a front panel is attached to a front opening formed by a notch provided in front of the upper and lower cases.

As a method of mounting the front panel to the housing, for example, a method of mounting on the front surface of the housing using an adhesive tape or an adhesive, or a method of mounting on a front panel of the housing using a screw is known. (See, for example, Patent Document 1).
JP 2002-158453 A (paragraphs 0011 to 0015, FIG. 1 and the like).

  The casing structure of the electronic device configured in this way inevitably increases the cost associated with an increase in the number of steps for mounting the front panel, as well as an increase in cost due to the use of adhesive tape, adhesive, or screws for mounting the front panel. It will be.

Therefore, as a method of mounting the front panel on the front surface of the housing without using an adhesive tape, an adhesive, a screw, or the like, one described in FIG. 12 to FIG. 14 or FIG. 15 to FIG. (For example, see Patent Document 2 or 3).
JP-A-7-297565 (paragraphs 0017 to 0023, FIG. 1, etc.) JP-A-8-316655 (paragraph 0038, FIG. 15 and the like).

  The housing structure of the electronic device described in FIGS. 12 to 14 is formed by superposing a box-shaped lower case 31 having an upper surface opened and an upper case 32 having an opened lower surface with the openings facing each other. The body 30 is configured.

  And the protrusion part 35a extended and protruded in the lower case 31 side is provided in the edge part of the upper case 32, and the engagement recessed part 35 of the cross-sectional U shape is formed in the protrusion piece 35a.

  The end of the lower case 31 is first formed into a rising end surface 34b that is raised slightly toward the protruding piece 35 as it is, and further, a cut 34a is cut into a substantially cross-sectional shape in the thickness direction continuously with the rising end surface 34b. By doing so, the engaging protrusion 34 is formed.

  Therefore, by engaging the engaging protrusions 34 of the lower case 31 with the engaging recesses 35 on the upper case 32 side, the engaging portions X that engage with each other in a plane are formed.

  Further, on the other side surface 30b of the left and right side surfaces of the housing 30, a screwing hole 32b into which a screw (not shown) is screwed is provided at an end portion on the upper case 32 side, and a screw is provided at an end portion on the lower case 31 side. A screw embedding hole 31b for inserting and embedding is provided, and a seating portion 31c on which the head of the screw is seated is formed in the embedding hole 31b.

  Moreover, the opening part 36 is formed in the front 30e side of the housing | casing 30 by forming the notch parts 31a and 32a in the lower case 31 and the upper case 32 mutually in U shape toward the front surface 30e.

  In addition, a concave groove 36a is formed from the end surface portion of the notch portion 31a of the lower case 31 to the lower surface 30c side, and from the end surface portion of the notch portion 32a of the upper case 32 toward the upper surface 30d side. A concave groove 36b is formed, and the upper and lower ends of the front panel 33 are fitted into both the concave grooves 36a and 36b so that the front panel 33 is mounted on the front surface 30e side of the housing. ing.

  When configured as described above, the other side surface 30b side of the housing 30 is held in an open state of, for example, a dimension a while the engagement protrusion 34 is engaged with the engagement recess 35.

  As a result, the front surface 30e side of the housing 30 opens in a triangular shape with one side surface side of the housing 30 as the apex along with the back surface 30f side.

  Next, the front panel 33 is fitted into the triangular opening, and the upper and lower ends of the front panel 33 are opposed to the concave groove 36a and the concave groove 36b, respectively, on the side surface 30a side of the housing 30. , The engagement protrusion 33 slides into the engagement recess 35 to become a so-called hinge center, and the lower case 31 is rotated with respect to the upper case 32 on the other side surface 30b side of the housing 30 to set the opening dimension a. The upper surface of the lower case 31 is brought into contact with the lower surface of the upper case 32, and a screw is inserted from the screw embedding hole 32b side and screwed into the screwing hole 31b. At this time, the notch 31a and the notch An opening 36 is formed on the front surface 30e side by the portion 32a, the front panel 33 is sandwiched between the lower case 31 and the upper case 32, the lower case 31 is fixedly assembled to the upper case 32, and the housing 30 is completed.

  Then, both end portions of the front panel 33 are fitted and mounted in both the concave grooves 36a and 36b, and the other side surface side of the housing 30 is externally attached to the upper surface of the end portion of the upper case 32. A notch recess 32d provided so as to open inward is engaged with a notch protrusion 32d provided so as to open inwardly on the lower surface of the end of the lower case 31, thereby eliminating the visibility inside the housing 30. ing.

  The casing structure of the electronic device configured as described above is obtained by assembling the lower case 31 and the upper case 32 with a small number of screws.

  Next, the housing structure of the conventional electronic device described in FIGS. 15 to 17 will be described.

  The housing structure shown in FIGS. 15 to 17 is different from the one shown in FIGS. 12 to 14 in the engagement structure on the one side surface 30a side of the housing 30, and in other configurations. Since they are the same, the same reference numerals are assigned and detailed description of the configuration is omitted.

  In other words, on one side surface 30 a side of the housing 30, an engaging claw piece 37 that is elastically rotatable and extends toward the lower case 31 side is formed inside the lower surface of the end portion of the upper case 32. The difference is that an engagement recess 38 that engages with the hook-shaped engagement portion 37a of the engagement claw piece 37 is provided in the inner wall of the lower surface of the end portion.

  And when comprised in this way, in the one side surface 30a side of the housing | casing 30, the engagement claw piece 37 slides the edge part of the lower case 31 by sliding the lower case 31 to the upper case 32 side. However, when the hook-shaped engagement portion 37a reaches the engagement recess 38, the engagement recess 38 is returned by the return movement of the engagement protrusion 37. The lower case 31 and the upper case 32 are assembled by engaging the hook-shaped engagement portion 37a therein.

  In the conventional housing structure shown in FIGS. 11 to 13, the other side surface 30 b of the housing 30 is opened, for example, by a dimension a with the engaging protrusion 34 engaged with the engaging recess 35. After holding in a state and opening in a triangular shape with one side surface side of the housing 30 as a vertex on the front surface 30e side of the housing 30, the front panel 33 is fitted into this triangular opening, On one side surface 30 a side of the housing 30, the engaging protrusion 33 slides on the plane of the engaging recess 35 and becomes a so-called hinge center, while the other side surface 30 b side of the housing 30 is against the upper case 32. The lower case 31 is rotated to eliminate the opening dimension a, the upper surface of the lower case 31 is brought into contact with the lower surface of the upper case 32, and a screw is inserted from the screw embedding hole 32b side and screwed into the screwing hole 31b. The lower case 31 to the upper case 32 The front case 33 is attached to the housing 30 so as to be sandwiched between the upper and lower cases 31 and 32 by fitting into the concave grooves 36a and 36b. Since the engagement portion X has a planar combination shape, if the opening dimension a in the opening portion 39 that is opened in a triangular shape to insert the front panel 33 is attempted to be too large, The engagement with the engagement protrusions 35 is disengaged, and therefore it must be reduced. As a result, the opening area of the triangular opening 39 cannot be increased, and the size of the front panel 33 is increased. (In the case of the figure, the size of the front panel 33 occupies about half of the entire front surface of the housing 30), and a large number of upwards are displayed on the front panel 33. I can't It becomes.

  Further, according to the case structure of the conventional electronic device shown in FIGS. 14 to 16, on one side surface 30a side of the case 30, the engaging claw piece is slid while the lower case 31 is slid toward the upper case 32 side. Since the lower case 31 and the upper case 32 are assembled by engaging the hook-like engaging portion 37a of the member 37 in the engaging recess 38, the opening area for inserting the front panel 33 is as shown in FIG. 14 is larger than the one described in FIG. 14, but the engagement claw piece 37a is engaged with the engagement recess 38 in the hook-like engagement portion 37a by utilizing the elastic deformation of the engagement claw piece 37. Although it is desired to increase the bending dimension b of 37, the bending dimension b cannot be made too large due to the strength relationship of the engaging claw piece 37. The amount of engagement with the engaging recess 38 is reduced. Put away, there is a fear that out is hook-shaped engaging portion 37a from the engaging recess 38 by inadvertent impacts, such as dropping.

  Accordingly, in view of the above, the present invention has a housing structure for an electronic device in which the front panel can be enlarged and the engaging portions of the upper and lower cases are not easily detached even when an unexpected impact such as dropping is applied. The purpose is to provide.

  In order to achieve the above object, a housing structure of an electronic device according to the present invention forms a box-shaped housing by superposing an upper case and a lower case, on the front side of the upper case and the lower case. An opening is formed on the front side of the housing by forming a notch, a front panel is incorporated into the opening, and one of the left and right side walls in one of the upper case and the lower case In addition, an engagement protrusion is formed, and an engagement recess for engaging with the engagement protrusion is formed on one of the left and right side walls of the other case corresponding to the engagement protrusion, and the engagement recess is formed in the engagement recess. While engaging the mating projection, the other case is rotated relative to the one case with the engaging recess and the engaging projection engaging portion as the hinge center, and the left and right side walls of the one case are The other side is the other of the left and right side walls of the other case In this process, the front panel is sandwiched by the upper case and the lower case in the opening, and the front panel is assembled in the opening, and the other side of the left and right side walls in the upper and lower cases A housing structure of an electronic device configured to be screwed by a fastener, wherein the engaging portion of the engaging protrusion in the engaging protrusion is formed in a concave arc shape and is engaged with the engaging recess. The engaging protrusion is formed in a convex arc shape.

  In the present invention configured as described above, while engaging the engagement protrusion with the engagement recess, the other case is rotated with respect to one case with the engagement recess and the engagement portion of the engagement protrusion as the hinge center. The end surface of the other side of the left and right side walls of one case is brought into contact with the end surface of the other side of the left and right side surfaces of the other case, and in this process, the upper case and the lower case in the opening When the front panel is sandwiched and the front panel is assembled into the opening, the engaging portion of the engaging recess in the engaging protrusion is formed in a concave arc shape, and the engaging protrusion engaging with the engaging recess is in a convex arc shape As a result, the upper case relative to the lower case can be largely rotated while maintaining the engagement relationship between the engagement protrusion and the engagement recess, resulting in an opening area for incorporating the front panel. To increase Thus, as the front panel, for example, a large front panel full of information display amounts such as LEDs and liquid crystals can be adopted by forming it to a size almost full of the front of the casing, and the engagement protrusion and the engagement recess Therefore, the upper and lower cases can be attached with a small number of screws as in the prior art.

  Next, one of the best embodiments for carrying out the present invention will be described with reference to FIGS.

  FIG. 1 is a perspective view drawn from the upper case and front panel side of the housing structure of the electronic device employing the embodiment according to the present invention, FIG. 2 is a perspective view similarly drawn from the lower case and the rear side, and FIG. Similarly, FIG. 4 is a plan view drawn from the lower case side, FIG. 4 is a plan view drawn from the upper case side, FIG. 5 is a perspective view drawn in a vertical state with one side face upward, and FIG. FIG. 7 is an enlarged view in the circle of FIG. 6, FIG. 8 is a sectional view taken along the line CC in FIG. 6, and FIG. 9 is a diagram depicting the process of assembling the lower surface case with the upper surface case. FIG. 10 is an enlarged view in the circle of FIG. 9, and FIG. 11 is a sectional view taken along the line BB in FIG.

  A housing 1 that accommodates electronic devices such as communication devices has an opening between a lower case 2 that has a flat box shape with an upper surface 1d and an upper case 3 that also has a flat box shape with a lower surface 1c open. The front panel 4 is arranged on the front 1d side.

  As shown in FIG. 1, a pair of stands for fitting a heat radiating hole 5 and a stand 6 (see FIG. 5) when the casing 1 is used in a vertical position are provided on the upper surface 1 d of the upper case 3. A fitting groove 7 is formed.

  As shown in FIG. 2, a pair of stand fitting grooves for fitting a heat radiating hole 5 a and a stand 6 (see FIG. 5) when the casing 1 is placed vertically is formed on the lower surface 1 c of the lower case 2. 7a and a fixing groove 8 for wall hanging when the casing 1 is hung on a wall are provided, and as an installation surface when the casing 1 is used in a horizontal position with the upper case 3 facing upward Legs 9 are respectively formed at the four corners of the lower case 2.

  A plurality of cooling fins 5c project from the lower surface 1c, the upper surface 1d, and the rear surface 1f of the housing 1 so as to pass through the ventilation holes 5 and 5a.

  On one side surface 1a of the left and right side surfaces of the housing 1, a section having a concave-concave shape having a convex arcuate portion 10 formed in a convex arc shape of approximately a quarter circle from the end surface on the lower case 2 side toward the upper surface 1d A protrusion 13a is formed on the end surface on the upper case 3 side so as to extend toward the lower case 2, and a concave circle of approximately four semicircles is formed on the outer surface side of the protrusion 13a. An engaging projection 13 having a substantially convex trapezoidal cross section having a concave arcuate portion 12 formed in an arc shape is formed, and the engaging arc Y is engaged with the concave arcuate portion 12 so that the engaging portion Y is Forming.

  On the other side surface 1b of the left and right side surfaces of the housing 1, a screwing hole 3b into which the screw 19 is screwed is provided at the end portion on the upper case 3 side, and the screw 19 is inserted and embedded in the end portion on the lower case 2 side. A screw embedding hole 2b is provided, and a seating portion 2c on which the head of the screw 19 is seated is formed in the embedding hole 2b.

  On the front surface 1e side of the housing 1, an opening 16 is formed by forming notches 2a and 3a in the lower case 2 and the upper case 3 in a U-shape toward the front surface 1e.

  A concave groove 16a is formed which is cut from the end surface portion of the notch portion 3a of the upper case 3 toward the lower surface 1c side, and is also etched from the end surface portion of the notch portion 2a of the lower case 2 toward the upper surface 1d side. The provided recessed groove 16b is formed, and the front panel 4 is sandwiched and attached to the front surface 1e side of the housing 1 by fitting the upper and lower ends of the front panel 4 to both the recessed grooves 16a and 16b. is doing.

  When configured as described above, the convex arcuate portion 10 of the engaging recess 11 slides in the concave arcuate portion 12 of the engaging projection 13 with the engaging projection 13 engaged with the engaging recess 11. However, as a so-called hinge center, the front surface 1e side of the housing 1 is opened in a triangular shape with the one side surface 1a side of the housing 1 as a vertex (the state shown in FIGS. 9 and 10).

  In this case, since the engaging recess 11 has the convex arc-shaped portion 10 and the engaging protrusion 13 has the concave arc-shaped portion 12, the engagement relationship between the engaging protrusion 12 and the engaging recess 11 is maintained. The lower case 2 can be rotated at least about 90 degrees with respect to the upper case 3, and for this purpose, the triangular opening 20 formed on the front surface 1 e side of the housing 1 is formed to be large in the width direction of the front surface 1 e. The large front panel 4 can be inserted into the triangular opening.

  Then, the enlarged front panel 4 is fitted into the triangular opening 20, and one side surface of the housing 1 is placed with the upper and lower ends of the front panel 4 facing the concave groove 16a and the concave groove 16b, respectively. On the 1a side, the convex arcuate portion 10 of the engaging recess 11 slides within the concave arcuate portion 12 of the engaging projection 13 to form a so-called hinge center, while the upper case on the other side surface 1b side of the housing 1 is formed. 3, the lower case 2 is rotated in the opposite direction to the above, the upper surface of the lower case 2 is brought into contact with the lower surface of the upper case 3, and a screw is inserted from the screw embedding hole 2 b side to be screwed into the screwing hole 3 b. At this time, an opening 36 is formed on the front side 2e by the notch 2a and the notch 3a, and the front panel 4 is sandwiched and attached between the lower case 2 and the upper case 3, and the upper case 3 is attached. On the other hand, the lower case 2 is superposed and assembled to complete the housing 1.

  At this time, both end portions of the front panel 3 are fitted and mounted in both concave grooves 16a and 16b, and the lower surface of the end portion of the upper case 3 on the other side surface 1b side of the housing 1 is mounted. A notch recess 3d provided so as to open outwardly engages with a notch convex part 2d provided so as to open inwardly on the upper surface of the end of the lower case 2, so that the inside visibility of the housing 1 is visible. Is missing.

  In the housing structure of the electronic device configured as described above, screws (not shown) are inserted through a pair of screw holes 17 provided on the lower surface 1c side of the lower case 2, and the screws 18 are screwed to the upper case 3 side. Thus, the assembly of the lower case 2 and the upper case 3 is realized with a small number of screws.

  A plurality of boss portions 14 are provided upright on the bottom of the upper case 3 and a printed wiring board 15, which is one of electronic devices, is positioned by the boss portions 14 so as to be housed in the housing 1. At the same time, it is clamped and fixed between the base 20 on the lower case 2 side.

  In the embodiment according to the present invention configured as described above, the engaging recess 12 and the engaging portion Y of the engaging protrusion 13 are centered on the hinge while engaging the engaging protrusion 13 with the engaging recess 12. The lower case 2 is rotated with respect to the upper case 3, and the end surface on the other side surface 1b side of the upper case 3 is brought into contact with the end surface on the other side surface 1b side of the lower case 2. When the front panel 4 is sandwiched between the upper case 3 and the lower case 2 and the front panel 4 is assembled into the opening 16, a concave arc-shaped portion 12 is formed in the engagement protrusion 13 and a convex arc shape is formed in the engagement recess 11. Since the engaging portion Y is formed by forming the portion 10, the lower case 2 with respect to the upper case 3 can be largely rotated while maintaining the engaging relationship between the engaging protrusion 13 and the engaging recess 11. As a result, the front panel By using a large front panel with a large amount of information display such as LEDs and liquid crystal by forming the front panel 4 to be almost full size, for example, by increasing the area of the opening that incorporates 4 In addition, the upper and lower cases 2 with a small number of screws, as in the prior art, can be easily removed from unintentional impacts such as dropping, because the amount of engagement between the engagement protrusion 13 and the engagement recess 11 can be increased. 3 attachments can be realized.

  As described above, according to the present invention, while the engagement protrusion is engaged with the engagement recess, the other case is rotated with respect to one case with the engagement recess and the engagement portion of the engagement protrusion as the center of the hinge. The other side of the left and right side walls of one case is brought into contact with the other side of the left and right side walls of the other case, and the front panel is sandwiched and opened by the upper case and the lower case in the opening in this process. When the front panel is incorporated into the part, the engaging part of the engaging recess in the engaging protrusion is formed in a concave arc shape, and the engaging protrusion that engages with the engaging concave part is formed in a convex arc shape. The upper case can be largely opened while maintaining the engagement relationship between the engagement protrusion and the engagement recess, and as a result, by increasing the area of the opening for incorporating the front panel, ,example A large front panel with a large amount of information display such as LED and liquid crystal can be adopted by forming it to the size of the front of the casing almost full, and the amount of catch between the engagement protrusion and engagement recess can be increased and dropped. Communication that performs information communication using a telephone line because it can be easily attached to the upper and lower cases with a small number of screws as in the conventional case. It is suitable for a housing structure of an electronic device such as a device, in particular, a housing structure of a type of electronic device that is used in a vertical shape or a horizontal shape by mounting a front panel on the front surface of the housing.

It is the perspective view drawn from the upper surface case and front panel side of the housing | casing structure of the electronic device which employ | adopted embodiment concerning this invention. It is the perspective view similarly drawn from the lower surface case and the back side. It is the top view similarly drawn from the lower surface case side. It is the top view drawn from the upper surface case side. It is the perspective view which similarly drawn the state which uses one side part upwards, and used vertically. It is AA sectional drawing of FIG. It is an enlarged view in the circle of FIG. It is CC sectional drawing of FIG. FIG. 4 is a cross-sectional view taken along the line AA in FIG. 3, in which a halfway state in which the lower surface case is assembled to the upper surface case is similarly drawn. It is an enlarged view in the circle of FIG. It is BB sectional drawing of FIG. It is side surface sectional drawing on which the halfway state which assembled | attaches an upper surface case with respect to the lower surface case of the housing structure of the electronic device which shows an example of the past is drawn. It is an enlarged view in the circle of FIG. It is DD sectional drawing of FIG. It is side surface sectional drawing which drawn the halfway state which assembles | attaches an upper surface case with respect to the lower surface case of the housing structure of the electronic device which shows the other conventional example. It is an enlarged view in the circle of FIG. It is EE sectional drawing of FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Case 1a One side 1b The other side 1e Front 2 Lower case 2a Notch 3 Upper case 3a Notch 4 Front panel 10 Convex arc part 11 Engaging concave part 12 Concave arc part 13 Engaging protrusion 16 Opening Part Y Engagement part

Claims (1)

A box-shaped casing is formed by superposing the upper case and the lower case, and an opening is formed on the front side of the casing by forming a notch on the front side of the upper case and the lower case. A front panel is incorporated into the opening, and an engagement protrusion is formed on one of the left and right side walls of one of the upper case and the lower case, and the other corresponding to the engagement protrusion. An engagement recess that engages with the engagement protrusion is formed on one of the left and right side walls of the case, and the engagement recess and the engagement portion of the engagement protrusion are engaged with the engagement recess. The other case is rotated with respect to the one case, and the other side of the left and right side walls of the one case is brought into contact with the other side of the left and right side walls of the other case. In the upper case in the opening And a case of an electronic device, wherein the front panel is sandwiched between the lower case and the front panel is assembled into the opening, and the other side of the left and right side walls of the upper case and the lower case is screwed together with a fastener. Structure,
The engaging portion of the engaging recess in the engaging protrusion is formed in a concave arc shape, and the engaging protrusion engaging with the engaging recess is formed in a convex arc shape. Body structure.

Images