JP2009302080A - Apparatus cabinet - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To obtain an apparatus cabinet having a bottoming hole formed by the bottoming structure of a molding die which is constituted not to require a closing member separately although the bottoming hole is conventionally closed with a separate member. <P>SOLUTION: When an apparatus cabinet consisting of a front case 2 and a rear case 3 is attached, a bottoming hole 50 formed in the front case 2 is fitted with an engaging piece 51 provided on the rear case 3 and closed. Since dust or water can be prevented from infiltrating into the cabinet without using a closing member separately, the number of components can be decreased and the cost can be reduced. Furthermore, the work can be simplified and the man-hours can be reduced because the bottoming hole is closed with the engaging piece simultaneously with attachment of the front case and rear case. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a device housing, and more particularly to a device housing capable of closing a press-cut hole formed during molding with a simple and inexpensive configuration by using a part of the constituent members.

  Conventionally, in a case part formed by a molding die, as a structure for closing a pressing hole that is vacant at a so-called undercut location, the conventional example 1 (see Patent Document 1) or the conventional example 2 shown in FIG. Thus, what closes a pressing hole using a closure member is common. What is disclosed in Conventional Example 1 is a housing structure of a mobile communication device such as a mobile phone or a PHS, and as shown in the development view of FIG. 8A and the embedded view of FIG. It includes a front case 200, a rear case 201, a closing member 202, a vibration motor 205 for generating vibration, a printed circuit board 206, and a battery lid 207.

  The rear case 201 is provided with a groove 203 into which a locking piece 208 provided on a charging stand (not shown) is inserted and a groove 204 into which a locking piece 207 a provided on the battery lid 207 is inserted. Since the rear case 201 is formed by a molding die composed of upper and lower molds, the buried concave portion 203a of the groove 203 and the buried concave portion 204a of the groove 204 are so-called undercuts. Therefore, in terms of the structure, there is a pressing hole 203b formed by the pressing structure of the molding die inside the groove 203, and a pressing hole 204b similarly formed by the pressing structure of the molding die inside the groove 204. Is inevitable.

  From these pressing holes 203b and 204b, dust, dust, water or the like may enter the inside of the housing, so it is desirable to close the pressing holes 203b and 204b. Therefore, as shown in FIG. 8A, when the closing member 202 is attached from the inside of the rear case 201 so that the leg plate portion 202a is inserted along the partition wall 201a into the embedded recess 203a and the embedded recess 204a. As shown in FIG. 8 (B), the pressing hole 203b is closed by the closing plate portion 202b protruding from the closing member 202, and the pressing hole 204b is closed by the closing plate portion 202c protruding from the closing member 202.

  As described above, by attaching the closing member 202 and closing the pressing hole 203b and the pressing hole 204b, it is possible to prevent intrusion of dust, dirt or water into the housing. 8B, the locking piece 208 is inserted into the groove 203, and the locking piece 207a of the battery lid 207 to be mounted on the rear case 201 after the battery 209 is inserted into the groove 204, respectively. Is done. 8B, the closing plate portion 202b of the closing member 202 is arranged so that the terminal of the vibration motor 205 is in electrical contact with the wiring of the printed circuit board 206 together with the inner wall 201b of the rear case 201. It is used as a positioning means in the height direction.

  FIG. 9 is a view showing a touch panel controller 300 of Conventional Example 2, and FIG. 9A is an external perspective view of the touch panel controller 300. FIGS. 9B and 9C are cross-sectional views taken along line EE ′ in FIG. 9A, in which FIG. 9B shows the state before the closing member 307 is mounted, and FIG. Show. A storage recess 303 for storing the input pen 305 is provided at the top of the front case 301, and a rear case 302 is assembled to the back of the front case 301.

  A locking claw 304 for holding the input pen 305 is provided in a part of the storage recess 303. However, since the front case 301 is formed by a molding die including upper and lower molds, the locking claw 304 is provided. The lower part of is a so-called undercut. Therefore, it is inevitable that a notch hole 306 formed by the forming die pressing structure is vacated in the lower part of the locking claw 304 due to the structure.

  Since dust, dust, water, or the like may enter the inside of the housing from the pressing hole 306, it is desirable to close the pressing hole 306. Therefore, when the closing member 307 is mounted from the inside of the front case 301 as shown in FIG. 9C, the pressing hole 306 is closed by the closing member 307. In this manner, by attaching the closing member 307 and closing the pressing hole 306, intrusion of dust, dirt, water, or the like into the housing can be prevented.

  However, in the structures shown in Conventional Example 1 and Conventional Example 2, a closing member is required to close the pressing hole, and the number of parts increases. In addition, there is a problem that the work of mounting the closing member on the pressing hole using an adhesive or the like is required, which makes the work troublesome and increases the cost by increasing the number of closing members. Furthermore, if the housing is divided into portions including the locking claws and grooves in order to prevent the formation of the cut-off hole, there are problems that man-hours and mold costs at the time of manufacture increase and appearance also deteriorates.

  On the other hand, there is also a method of eliminating the cut hole by attaching the part causing the undercut as a separate part. For example, FIG. 10 is a cross-sectional view showing another conventional example 3 in FIGS. 9B and 9C, in which FIG. 10A shows the state before the locking member 309 is attached, and FIG. Each is shown. In this conventional example, as shown in FIG. 10A, a locking member engaging portion 308 is provided in a part of the storage recess 303 provided in the upper portion of the front case 301, and the locking member engaging portion 308 is illustrated in FIG. As shown in FIG. 10B, the holding member of the input pen 305 is provided by attaching the locking member 309.

With such a structure, the locking claw 304 that caused the undercut in FIG. 9 is the locking member 309 that is a separate member. There is no need to close the pressing hole with the closing member. However, the locking member 309 is required instead of the closing member, and an operation of attaching the locking member 309 to the locking member engaging portion 308 using an adhesive or the like is required. Therefore, similarly to the conventional example described with reference to FIG. 9, there is a problem that the work becomes troublesome and the cost increases due to the increase in the number of engaging members 309.
JP 2006-222350 A (pages 5-7, FIG. 2)

  An object of the present invention is to solve the above-mentioned problems and to realize the closing of a notch hole formed by a notch structure of a molding die with a simple and inexpensive configuration.

  In order to solve the above-described problems, the present invention has the following features.

  The invention relating to claim 1 is an equipment housing composed of a front case and a rear case formed by molding, wherein either one of the cases is provided with a storage recess for storing the member, and the storage recess holds the member. In order to provide a latching claw that protrudes toward the storage recess, a pressing hole is formed on the side surface of the storage recess under the locking claw by a pressing structure, and the other case has a pressing hole. By providing an engagement piece that can be engaged and assembling the front case and the rear case, the pressing hole is closed by the engagement piece, so that dust or dust can be used without using a separate closing member. Since water or the like can be prevented from entering the housing, the number of parts can be reduced and the cost can be reduced. Further, since the pressing hole is closed by the engagement piece at the same time as the front case and the rear case are assembled, the work can be simplified and the number of steps can be reduced.

  In the invention related to claim 2, a protrusion is disposed on the engaging piece formed on any one of the cases, and a receiving part that can be fitted to the protrusion is formed on the other case. Further, the assembly strength of the casing is further increased.

  By using the means described above, it is possible to prevent dust, dust, water, etc. from entering the inside of the housing without using a separate closing member in order to close the pressing hole formed by the pressing structure. Therefore, the number of parts can be reduced and the cost can be reduced. Further, since the pressing hole is closed by the engagement piece at the same time as the front case and the rear case are assembled, the work can be simplified and the number of steps can be reduced.

  Embodiments of the present invention will be described below in detail with reference to the accompanying drawings. As an example, a device casing of a touch panel controller according to the present invention will be described as an example.

  An embodiment of the present invention will be described with reference to FIGS. FIG. 1 is an external perspective view of a touch panel controller according to an embodiment of the present invention, and FIG. 2 is an exploded perspective view of the touch panel controller. FIG. 3 is a schematic cross-sectional view of the main part A-A ′ of FIG. 1. 4 is a cross-sectional view taken along the line BB ′ of the front case 2 of FIG. 2, (A) shows the shape of the upper and lower molds of the molding die forming this part, and (B) is an outline of the main part of this part. It is sectional drawing. 5 is a detailed view of the engaging piece 51 provided in the rear case 3 of FIG. 2, (A) is a schematic cross-sectional view of the CC ′ main part, and (B) is an arrow D view (front view). is there.

  The touch panel controller 1 shown in FIG. 1 performs various controls such as operation monitoring and air conditioning management for an air conditioning system installed in a large facility such as a building, and protects the touch panel of the liquid crystal screen unit 13 on the front surface. A front case 2 made of a resin material provided with a storage recess 4 which is a storage portion of the input pen 7 which is a member having a substantially circular cross section, and a rear case made of a resin material provided with a heat radiating hole 9 on the side surface 3 is a housing. The user can perform various controls of the air conditioning system by using the input pen 7 to select commands displayed on the touch panel through the protective sheet 8.

  The storage recess 4 is provided on the upper surface of the front case 2 in order to facilitate the attaching / detaching operation of the input pen 7 and to prevent the input pen 7 from dropping. The size of the storage recess 4 is a size corresponding to the input pen 7, and the cross-sectional shape AA ′ is a substantially arc shape corresponding to the outer shape of the input pen 7 so that the input pen 7 can be stably stored. .

  In the storage recess 4, two retaining claws 5 having a rectangular cross section are provided so as to protrude inside the storage recess 4 in order to hold the input pen 7. The dimension w of the locking claw 5 is a dimension that can be stably held when the input pen 7 is stored in the storage recess. At the center of the storage recess 4 is provided an input pen take-out recess 6 which is set to have a width and a depth to which the index finger can be applied so that the input pen 7 can be easily attached and detached.

  Further, as shown in FIG. 2, a screwing portion 10 having a screw hole 10 a for assembling with the rear case 3 and a front case locking claw 11 are projected from both side portions of the front case 2.

  When the input pen 7 is stored in the storage recess 4, the input pen 7 is brought closer to the storage recess 4 from directly above. As shown in FIG. 3, when the input pen 7 is stored in the storage recess 4, the input pen locking portion dimension X, which is the dimension of the entrance portion, is slightly smaller than the cross-sectional diameter dimension Y of the input pen 7. Yes. For this reason, in order for the input pen 7 to fit in the storage recess 4, it is necessary to get over the locking claw 5, but the thickness dimension Z of the locking claw 5 is thinned so as to be elastically deformed. When the outer shape of 7 comes into contact with the locking claw 5, the input pen 7 is moved over the locking claw 5 by further applying a force in the direction of the storage recess 4, that is, downward to bend the locking claw 5 downward. It can be stored in the storage recess 4.

  When the input pen 7 is stored in the storage recess 4, the locking claw 5 returns to its original state. At this time, as shown in FIG. 3, the locking claw 5 comes into contact with the outer shape of the input pen 7, so that the input pen 7 can be prevented from rattling or dropping and stably stored.

  Further, when the input pen 7 is taken out from the storage recess 4, an index finger is put in the input pen take-out recess 6 and applied to the input pen 7, and a force is applied in the direction opposite to the storage, that is, upward. At this time, since the latching claw 5 is in contact with the outer shape of the input pen 7, it receives a force from the input pen 7 and bends upward, and the input pen 7 gets over the latching claw 5 and is taken out from the storage recess 4. Can do.

  Now, although the front case 2 is formed by mold molding, the locking claw 5 protrudes to the inside of the storage recess 4 and therefore has a shape that cannot be released when removed from the mold after molding, that is, an undercut shape. Accordingly, it is necessary to perform an undercut process for moving the portion of the die corresponding to the undercut shape so that it can be released. In that case, as shown in FIG. 4A, a pressing surface 54 is formed by the upper die 52 and the lower die 53 of the molding die. Since the resin material does not rotate in this portion at the time of molding, as shown in FIG. 4B, a pressing hole 50 having a height dimension h is formed on the side surface of the storage recess 4 below the locking claw 5. In addition, the width dimension of the pressing hole 50 and the dimension w of the latching claw 5 are the same dimension.

  Inside the rear case 3 constituting the other housing, as shown in FIG. 2, a liquid crystal screen unit 13 having a touch panel on the front surface, a power supply substrate 14 on which a power supply circuit component such as a power supply IC is mounted, a filter A filter substrate 15 on which circuit components are mounted is assembled and connected to each other via a connection cable or a connector.

  Further, on both side surfaces of the rear case 3, a rear case screw hole 12 to be assembled with the screwing portion 10 of the front case 2, a locking claw engaging portion 17 to be engaged with the front case locking claw 11, and a liquid crystal screen A plurality of heat radiating holes 9 are provided for releasing heat generated from the unit 13 and the power supply board to the outside of the housing.

  The rear case 3 has a substantially U-shaped cross section and is made of a resin material formed by molding. Two engaging pieces 51 project from the upper surface of the rear case 3 toward the front surface. The lateral position of the engagement piece 51 corresponds to the pressing hole 50 of the front case 2, and the projecting dimension is related to the contact surface when the front case 2 and the rear case 3 are assembled as shown in FIG. It is set to the length with which the combined piece 51 abuts. As shown in FIG. 5 (B), the engagement piece 51 has a rectangular shape when viewed from the front (arrow D in FIG. 2). The height dimension H and the width dimension W of the engagement piece 51 are respectively press-cut. The dimensions correspond to the height h and width w of the hole 50. The tip of the engagement piece 51 corresponds to the flat and rectangular contact portion 51b as shown in FIG. 5A, and the outer shape of the input pen 7 from the contact portion upper end 51c to the engagement piece upper end 51d. It is the engagement piece cross-sectional shape 51a which becomes a part of substantially arc shape.

  The assembly of the front case 2 and the rear case 3 is as follows. First, the front case 2 is brought closer to the rear case 3. At that time, the engaging piece 51 of the rear case 3 is inserted into the pressing hole 50 of the front case 2, and then the front case locking claw 11 protruding from the front case 2 is provided on the inner side of the rear case 3. The front case locking claw 11 is fitted into the locking claw engaging portion 17 by applying force to the front case 2. At this time, the front case 2 and the rear case 3 are in close contact with each other at the outer peripheral portion. At the same time, the contact portion 51b of the engagement piece 51 contacts the front case 2 as shown in FIG. The pressing hole 50 is closed by fitting with the engagement piece 51. Further, since the distal end portion of the engagement piece 51 has an engagement piece cross-sectional shape 51 a corresponding to the outer shape of the input pen 7, the engagement piece 51 is smoothly connected to the storage recess cross-sectional shape 4 a of the storage recess 4. 4 will be formed.

  When the front case 2 and the rear case 3 are assembled, the screw hole 10a provided in the screwing portion 10 protruding from the front case 2 and the screw hole 12 provided in the rear case 3 are in a coaxial position, Assembling of the front case 2 and the rear case 3 is completed by screwing the fastening screws 16 (two pieces) from the screw hole 12 toward the screw hole 10a.

  As described above, since the pressing hole 50 is closed by the engagement piece 51 provided in the rear case 3, it is possible to prevent intrusion of dust, dust, water, or the like into the housing without separately providing a closing member. It is possible to reduce the number of parts and cost. Further, since the pressing hole 50 is closed by the engaging piece 51 at the same time as the front case 2 and the rear case 3 are assembled, the assembly work is simpler than when a separate closing member is attached using an adhesive or the like. Become. Furthermore, man-hours can be reduced by reducing the number of parts and simplifying the assembly work.

  In the above embodiment, the front case 2 and the rear case 3 are all formed of a synthetic resin material. However, the present invention is not limited to this, and the rear case 3 may be made of a material having higher rigidity such as iron or aluminum. In addition, the front case 2 and the rear case 3 may be made of a manufacturing method similar to that of a synthetic resin material such as aluminum die casting, that is, a material in which the pressing hole 50 is formed by a mold structure. If these metal materials are used, a stronger blockage of the pressing hole 50 can be realized.

  Moreover, although the latching claw 5, the pressing hole 50, and the engagement piece 51 for holding the input pen 7 are each formed in two places, it is not restricted to this, The latching claw 5, the pressing hole 50, and Each of the engagement pieces 51 may be formed at one place or at a plurality of three or more places.

  Further, the storage recess 4 and the pressing hole 50 are formed in the front case 2 and the engaging piece 51 is formed in the rear case 3, respectively, but the storage recess 4 and the pressing hole 50 are not formed in the rear case 3. The engaging pieces 51 may be formed on the front case 2 respectively.

  In addition, although the present Example demonstrates the apparatus housing | casing of the touchscreen controller by this invention, it is not restricted to this, As a structure, it has a pressing hole formed by a metal mold | die in one case, and the other case Can be widely applied to equipment housings having a structure that includes a portion that closes the pressing hole and that can be closed by assembling them.

  Next, another embodiment of the present plan will be described with reference to FIGS. 6 is a detailed view of the second engagement piece 55 which is an engagement piece of another shape in FIG. 2, (A) is a schematic cross-sectional view of CC ′ main part, (B) is an arrow D view. (Front view). FIG. 7 is a schematic view of the main part showing the engagement state between the press hole 50 and the second engagement piece 55 when the front case 2 and the rear case 3 having the second engagement piece 55 shown in FIG. 6 are assembled. It is sectional drawing. Since this structure is similar to the structure described in FIG. 3 and FIG. 5, the same reference numerals are given to the configurations described in FIG. 3 and FIG. 3 and 5 is that the second engaging piece 55 is provided with an engaging convex portion 56 for engaging with the front case 2.

  Two second engaging pieces 55 project from the upper surface of the rear case 3 toward the front side. The lateral position of the second engagement piece 55 corresponds to the pressing hole 50 of the front case 2, and the protruding dimension is the contact surface when the front case 2 and the rear case 3 are assembled as shown in FIG. The second engagement piece 55 is in contact with the length. As shown in FIG. 6B, the second engagement piece 55 has a rectangular shape when viewed from the front (arrow D in FIG. 2), and the second engagement piece 55 has a height H ′ and a width. The dimension W ′ is a dimension corresponding to the height h and the width w of the pressing hole 50. On the upper surface of the second engagement piece 55, an engagement convex portion 56 having a height dimension H ″ and a thickness dimension T corresponding to the engagement receiving portion 57 of the front case 2 is connected. As shown in FIG. 6A, the distal end portion of the joining piece 55 includes a flat and rectangular second contact portion 55b and the input pen 7 from the second contact portion upper end 55c to the engagement convex portion upper end 56a. A second engagement piece cross-sectional shape 55a is formed in a part of a substantially arc shape corresponding to the outer shape.

  When assembling, the front case 2 is first brought close to the rear case 3. At that time, the second engagement piece 55 of the rear case 3 is inserted into the pressing hole 50 of the front case 2, and then the front case locking claw 11 protruding from the front case 2 is placed on the inner side of the rear case 3. It is inserted into the provided locking claw engaging portion 17 and a force is applied to the front case 2 to fit the front case locking claw 11 to the locking claw engaging portion 17. At this time, the front case 2 and the rear case 3 are assembled in close contact with each other at the outer peripheral portion. At the same time, as shown in FIG. The case 2 is brought into contact with the contact surface, and the pressing hole 50 is closed by fitting with the second engagement piece 55. Further, since the distal end portion of the second engagement piece 55 has a second engagement piece cross-sectional shape 55a corresponding to the outer shape of the input pen 7, the second engagement piece 55 is smoothly connected to the storage recessed portion cross-sectional shape 4a of the storage recess 4 so that the second engagement The joining piece 55 forms a part of the housing recess 4. At this time, the lower space of the locking claw 5 becomes the engagement receiving portion 57 of the engagement convex portion 56, and the engagement convex portion 56 is fitted with the engagement receiving portion 57. Since the engaging convex portion 56 hits the engaging receiving portion 57 and acts as a stopper when a force acts in a direction in which the rear case 3 is detached from the front case 2 (right direction in FIG. 7), the front case 2 and the rear case 3 The assembly strength of the can be increased.

    As described above, according to the present invention, either one of the front case and the rear case is formed with a pressing hole, and the other case is formed with an engagement piece. At the same time that both cases are assembled, the pressing hole and the engagement piece are closed by being fitted together.

  In addition, an engagement protrusion is provided on the engagement piece formed on one case, and an engagement receiving portion that is fitted on the engagement protrusion is provided on the other case. When attaching, an engagement convex part fits into an engagement receiving part.

  As a result, dust, dirt, water, or the like can be prevented from entering the housing without using a closing member, so that the number of parts can be reduced, and work can be simplified and costs can be reduced. it can.

  In addition, since the engaging convex portion hits the engaging receiving portion and acts as a stopper when a force is exerted in the direction in which both cases come off, the assembly strength of the front case 2 and the rear case 3 can be further increased.

It is an external appearance perspective view which shows the Example of the touchscreen controller by this invention. It is a disassembled perspective view which shows the Example of the touchscreen controller by this invention. FIG. 2 is a schematic cross-sectional view of the main part A-A ′ of FIG. 1 in the embodiment of the touch panel controller according to the present invention. FIG. 3 is a B-B ′ sectional view of FIG. 2 in the embodiment of the touch panel controller according to the present invention, (A) is an upper and lower mold shape diagram of a molding die, and (B) is a schematic sectional view of an essential part. It is detail drawing of the engagement piece in the Example of the touchscreen controller by this invention, (A) is CC 'principal part schematic sectional drawing of FIG. 2, (B) is arrow D figure (front view) of FIG. ). It is detail drawing of the engagement piece in the other Example of the touchscreen controller by this invention, (A) is CC 'principal part schematic sectional drawing of FIG. 2, (B) is arrow D figure of FIG. Front view). It is a principal part schematic sectional drawing after the front case and rear case assembly | attachment in the other Example of the touchscreen controller by this invention. It is drawing which shows the mobile communication apparatus of the prior art example, (A) is a principal part expanded view, (B) is an assembly | attachment figure. It is drawing which shows the touchscreen controller of the prior art example 2, (A) is an external appearance perspective view of a touchscreen controller. Further, (B) is a cross-sectional view of a principal part taken along line D-D ′ before the cover member is attached, and (C) is after the cover member is attached. It is drawing which shows attachment of the nail | claw member which latches an input pen of the prior art example 3, (A) is a principal part sectional drawing which shows a nail | claw member attachment before (B).

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Touch panel controller 2 Front case 3 Rear case 4 Storage recessed part 5 Locking claw 6 Input pen taking-out recessed part 10 Screwing part 10a Screw hole 11 Front case locking claw 12 Rear case screw hole 17 Locking claw engaging part 50 Pressing hole 51 Engagement piece 52 Upper die
53 Lower mold 54 Pressing face 55 Second engagement piece 56 Engagement convex part 57 Engagement receiving part

Claims (2)

An equipment case composed of a front case and a rear case,
A storage recess for storing a member is provided in one of the cases, and the storage recess is provided with a locking claw that protrudes toward the storage recess to hold the member. Having a pressing hole formed in the side surface of the storage recess,
In the other case, an engagement piece that can be engaged with the pressing hole is provided,
A device housing, wherein the pressing hole is closed by the engagement piece by assembling the front case and the rear case. 2. The device according to claim 1, wherein a protrusion is disposed on the engaging piece formed on one of the cases, and a receiving portion that can be fitted to the protrusion is formed on the other case. Enclosure.