JP2008135529A - Edge structure of component of assembled product - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To easily disassemble an assembled product which is coupled with a plurality of hooks, while preventing a member from being scratched. <P>SOLUTION: A cut is provided in a way that a slotted screw driver can be easily inserted into the edge of a member constituting an assembled product and a distance by which the edge of the other member is pushed out during rotation is kept to be a predetermined value. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a structure of an edge of a member constituting an assembly product.

  An information device such as an in-vehicle device is configured by fitting a resin-made front cover with a decoration into a metal box-shaped housing in which a circuit board is stored. The coupling state between the two is maintained by hooking a plurality of hooks (also referred to as engagement protrusions) arranged on the housing side to a hook receiver on the front cover side (see Patent Document 1, etc.).

Japanese Patent Application No. 5-115537

  In order to disassemble this, it is necessary to remove all the hooks and to separate the housing and the front cover. Here, the operation of removing the hook and the operation of separating the distance must be performed to some extent at the same time. This is because once the hook is removed, if the distance is not increased, the hook will return to the hooked state again. Therefore, for example, while removing some hooks with a flathead screwdriver, another gap screwdriver is inserted into the gap between the housing and the front cover and rotated to enlarge the gap. When there are a plurality of hooks, this operation is performed for each predetermined place.

  By the way, when the forcible screwdriver is forcibly turned to widen the gap even though the hook is not removed, the gap does not widen and the contact portion of the housing or the front cover with the driver is damaged. This is inconvenient when it is desired to repair or recycle the parts after disassembly.

  On the other hand, if the gap is enlarged more than necessary at a certain place, other unreleased hooks are firmly hooked on the hook receiver, making it difficult to release.

  The present invention has been made to solve the above-described problems, and an object of the present invention is to provide a technique for easily disassembling an assembly product combined with a plurality of hooks while preventing damage to members. .

  In order to solve the above-mentioned problems, in the present invention, a flat screwdriver can be easily inserted into the edge of the member constituting the assembly product, and the distance for pushing away the edge of the other member when rotated is a predetermined distance. A notch of a shape that can be kept

For example, in the first aspect of the present invention, the first member and the second member are coupled by hooking a hook provided on one member to a hook receiver of the other member,
A notch for inserting a tool is provided on an edge of the first member facing the edge of the second member. The notch includes a first recess having a side parallel to the edge of the second member facing the second recess, and a fan-shaped second connected to the first recess and deeper than the first recess. It consists of a dent.

  Further, a second aspect of the present invention is an edge structure of a component member of an assembly product joined by a plurality of hooks, and a notch for inserting a tool is provided on an edge opposite to the edge of the opposite member. Is provided. The notch includes a first recess having a side parallel to the edge of the opposing member, and a fan-shaped second recess connected to the first recess.

  The notch is a part of a circle centered around the center of the rectangular area with the edge side of the second member as the longitudinal direction, and the angle between the two radii is approximately 90 °. The fan-shaped region may be formed in a shape cut from the edge of the second member.

  An embodiment of the present invention will be described below with reference to the drawings.

  FIG. 1 is an external view of an in-vehicle device (for example, a navigation device) to which an embodiment of the present invention is applied. FIG. 2 is an exploded view thereof.

  The in-vehicle device 1 includes a housing 100 and a front cover 200.

  A circuit board for performing various processes is stored in the housing 100. Note that the housing 100 is provided with holes for arranging connectors and cables for connection with external devices, air holes for heat dissipation, screw holes for attachment to the vehicle, and the like. The casing 100 is made of a metal such as stainless steel in order to maintain its strength.

  The front cover 200 is provided with a hard switch 202 for receiving user operations, an insertion hole for a CD, a display window 202 for a liquid crystal display, and the like, and functions as an interface for the user. Therefore, a predetermined decoration is made. The front cover 200 is generally made of plastic.

  The housing 100 and the front cover 200 are coupled by a plurality of hook structures. In other words, two hooks 120 are arranged on each of the four surfaces on the top, bottom, left, and right of the edge 110 of the housing 100 that faces the edge 210 of the front cover 200.

  The hook 120 is structured to be hooked on the hook receiver 220 on the front cover 200 side. Specifically, the protruding portion 121 of the hook 120 in the outward direction when viewed from the inside of the housing 100 fits into the hole 221 of the hook receiver 220. As a result, the movement of the casing 100 and the front cover 200 in the direction in which they are separated from each other is restricted, and the coupled state is maintained.

  Since the hook 120 and the hook receiver 220 have flexibility depending on the material, they can be fitted in the assembly process and removed in the disassembly process.

  When the hook 120 is pushed inward of the housing 100 or when the hook receiver 220 is turned outward of the housing, the hook 120 is detached from the hook receiver 220. When the distance between the housing 100 and the front cover 200 is increased in a state where the hook 120 is detached, the coupling state between the housing 100 and the front cover 200 is released and the housing 100 is disassembled.

  Further, in the present embodiment, a notch 130 is provided on the edge 110 of the housing 100 that faces the edge 210 of the front cover 200. One notch 130 is provided between the two hooks 120 on each surface of the housing 100.

  FIG. 3 is a diagram for explaining the function of the notch 130. (A1)-(A3) are the enlarged views of a coupling | bond part (area | region A of FIG. 1). (B1)-(B3) are sectional views (BB sectional views) of the hook portions (120, 220).

  The notch 130 is for inserting a flathead screwdriver that is a disassembly tool. The notch 130 has a shape that keeps the distance between the housing 100 and the front cover 200 moderate when the driver rotates.

  Therefore, the notch 130 includes a first recess 131 and a second recess 132. The 1st dent 131 is the part which cut off the rectangle according to the cross-sectional shape of the front-end | tip part of a flathead screwdriver. The edge 131a in the longitudinal direction is parallel to the side of the edge 210 of the front cover 200 that is opposed (that is, parallel to the gap d between the housing 100 and the front cover 200). The length of the first recess 131 in the longitudinal direction is approximately half of the width (length in the longitudinal direction of the cross section) of the tip of the driver used. The depth 131b of the first recess 131 is substantially equal to the thickness (length in the short direction of the cross section) of the tip of the driver used.

  The second recess 132 is connected to the first recess 131 and is deeper than the first recess 131. Further, it is a portion obtained by cutting out a fan shape corresponding to the rotation locus of the tip of the driver. That is, the second recess 132 corresponds to a locus portion drawn by the other end D1b when the end D1a in which the driver is inserted into the first recess 131 is rotated 90 ° in a direction away from the housing 100. .

  In other words, the notch 130 is a rectangular first region whose longitudinal direction is the edge 110 of the housing 100 and the length of the first region in the longitudinal direction centered on one end of the first region. And a sector-shaped second region whose angle between the two radii is approximately 90 ° is cut out from the edge 110 of the housing 100.

  The function of the notch 130 will be described according to the disassembling operation in the disassembling process. In the disassembling process, first, the hook 120 near the notch 130 is removed. Therefore, as shown in (A1), the flat head screwdriver D2 is inserted into the gap between the hook 120 and the hook receiver 220, and the protrusion 121 of the hook 120 is removed from the hole 221 of the hook receiver 220 (see the Z direction in (B1)). ).

  In this state, if the driver D2 is pulled out, it will return to its original state. Therefore, another minus driver D1 is inserted into the notch 130. At this time, as shown in (A1), the driver D1 is inserted into the first recess 131 so as to be fitted.

  And as shown to (A2)-(A3), the driver | operator D1 is rotated and the housing | casing 100 and the front cover 200 are pulled apart by enlarging the clearance gap d. The direction of rotation is the direction in which the end D1a of the driver D1 housed in the first recess 131 pushes the opposite edge 210 of the front cover 200, in other words, the driver D1 housed in the fan-shaped space of the second recess 132. This is the direction in which the end D1b of the lens moves to the housing 100 side.

  By this rotation operation, as shown in (A3), the housing 100 and the front cover 200 are separated by about half of the width of the driver D1 (longitudinal direction of the cross-sectional rectangle). Thereby, as shown to (B3), the protrusion part 121 of the hook 120 remove | deviates from the hole 221 of the hook receptacle 220, and a cancellation | release state is maintained. On the other hand, since the gap d is not more than necessary, it is possible to prevent the other hooks 120 that have not been released from engaging firmly.

  In this way, the operation of removing all the hooks 120 and the operation of separating them using the notch 130 are performed, and finally, the housing 100 and the front cover 200 are completely separated.

  The embodiment of the present invention has been described above.

  In order to remove the hook 120, the protrusion 121 of the hook 120 must be pushed down or the hook receiver 220 must be turned up. That is, a force is applied in the vertical direction (see arrow Z in FIG. 3). On the other hand, in order to separate the housing 100 and the front cover 200, a force must be applied to the left and right (see arrow X in FIG. 3). These operations must be performed simultaneously to some extent, and the applied force is difficult to control. Therefore, the force to separate in the left-right direction may be applied more than necessary. In this respect, according to the above-described embodiment, a just good gap d can be achieved simply by inserting and rotating the notch 130 using a predetermined flathead screwdriver. Moreover, since the 2nd dent 132 becomes a shape matched with the rotation locus | trajectory of the edge part of a driver, smooth rotation operation | movement is possible. With these actions, the casing 100 and the front cover 200 can be easily disassembled without damaging the edges more than necessary.

  The shape of the first recess 131 and the second recess 132 (depth, length, radius, etc.) is such that an appropriate gap d can be achieved when the driver assumed to be used is rotated. In addition, the arrangement and size of the hook 120, the material of the member, and the like can be changed as appropriate.

  Further, the location and number of the notches 130 are not particularly limited. It can be provided as appropriate according to the number of hooks and the location of the hooks.

  The notch 130 is not limited to the member on the side where the hook 120 exists, and may be provided on the member where the hook receiver 220 exists.

  Further, the present invention is not limited to the in-vehicle device. The present invention can be applied to an assembly product formed by combining a plurality of members. Also, the hook structure can be variously changed in addition to the above-described form.

FIG. 1 is an external view of an in-vehicle device to which an embodiment of the present invention is applied. FIG. 2 is an exploded view of an in-vehicle device to which an embodiment of the present invention is applied. FIG. 3 is a diagram for explaining the disassembling process.

Explanation of symbols

1 ... In-vehicle device,
100 ... casing 110 ... edge 120 ... hook 130 ... notch 200 ... front cover 210 ... edge 220 ... hook receiver

Claims (3)

An edge structure of a component of an assembly product,
The first member and the second member are coupled by hooking a hook provided on one member to a hook receiver of the other member,
The edge of the first member facing the edge of the second member is provided with a notch for inserting a tool,
The notch is
The first recess having a side parallel to the edge of the second member facing each other, and a fan-shaped second recess connected to the first recess and deeper than the first recess. An edge structure of a component member of an assembly product characterized by An edge structure of a component member of an assembly product coupled by a plurality of hooks,
The edge opposite to the edge of the opposing member is provided with a notch for inserting a tool,
The notch is
An edge structure of a component member of an assembly product, comprising: a first recess having a side parallel to an edge side of the opposing member; and a fan-shaped second recess connected to the first recess. . The first member and the second member are coupled by hooking a hook provided on one member to a hook receiver of the other member,
The edge of the first member facing the edge of the second member is provided with a notch for inserting a tool having a rectangular cross section,
The notch is a part of a circle centered around the center of the rectangular area with the edge side of the second member as the longitudinal direction, and the angle between the two radii is approximately 90 °. An edge structure of a component member of an assembly product, wherein the fan-shaped region is cut out from the edge of the second member.

Images