JP5359480B2 - Fitting structure and fitting structure forming method for unit mounting part - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a fitting structure including the other projection in front of a claw side of a fitting claw, and facilitating the extraction of a slide die for forming the projections. <P>SOLUTION: A fitting projection 83 is formed on a fixation surface 81 being a surface for fixing a component thereon, and a fitting claw 82 for fitting the component thereto is formed on a sidewall surface. A rib 84 is projected on the fixation surface 81 in front of a sidewall surface side of the fitting projection 83 with the fitting claw 82 formed thereon to be set lower than a position of the fitting claw 82. In the fitting projection 83, a hole 85 having a width at least equal to that of the fitting claw 82 is formed from the fixation surface 81 toward the lower part of the fitting claw 82, and the component is fitted by fitting the component between the fitting claw 82 and the rib 84. <P>COPYRIGHT: (C)2011,JPO&amp;INPIT

Description

  The present invention relates to a fitting structure for fixing a member using a fitting claw and a fitting structure forming method for forming the fitting structure.

  In order to stably hold parts (units) used in cellular phones, etc., a mating protrusion with a mating claw is provided on the rear case of the cellular phone, and the unit is fitted between the mating claw and the rear case. In many cases, a method of fixing the unit by inserting is used. Various methods for forming such a coupling portion have also been proposed.

  For example, Patent Document 1 describes a chair seat having a coupling portion that can easily pull out a slide mold that forms an undercut portion of an engagement piece when molding a synthetic resin-made middle shell. Has been. The joint portion of the seat for a chair described in Patent Document 1 is provided with a recessed portion that can be attached by fitting a seat frame at the center of the rear surface of the middle shell. A plurality of notches that are open are provided. The elastic engagement pieces facing each other are projected from the opposite side wall surfaces in the notch toward the other side wall surface. With such a structure, even if the elastic engagement pieces project from each other, the slide mold can be easily pulled out from the recess opening side opening of the notch.

Japanese Patent Laying-Open No. 2005-211249 (paragraphs 0005 to 0006, 0011, 0016, 0022, 0024, FIGS. 3 and 8)

  Depending on the structure of the fitting portion, not only a fitting projection having a fitting claw but also other projections may be formed. FIG. 9 is an explanatory view showing an example of a fitting structure in which other protrusions are formed in addition to the fitting protrusions. The fitting structure shown in FIG. 9 includes fitting protrusions 69 and 70 having fitting claws 59 and 60, and another protrusion 57 in front of the fitting claws 59 and 60 on the claw side.

  When forming a fitting structure using fitting claws, due to the structure of the fitting claws 59, 60, the molds K11, 12 are each slid in the D2 direction, and the mold K13 is moved out of the claws. Generally, it is slid once in the direction D1 and further slid in the diagonally upward direction D3. Even when the fitting structure illustrated in FIG. 9 is formed, it is necessary to slide the die K13 by a certain amount in the direction D1, but there is another protrusion 57 in the direction D1, and thus the die K13. Cannot be slid. In other words, when the mold K13 is slid in the D1 direction to form a fitting structure, there is a problem that other protrusions 57 cannot be formed.

  In the recessed portion of the chair seat described in Patent Document 1, an elastic engagement piece projects from the side wall surface. However, in the case of a structure in which other protrusions exist on the claw side (inner side) of the elastic engagement piece, there is a problem that the slide mold cannot be removed from the opening of the notch in the recessed portion. .

  Accordingly, the present invention forms a fitting structure and a fitting structure for facilitating the removal of a slide mold forming these in a fitting structure provided with other protrusions in front of the claw side of the fitting claw. An object of the present invention is to provide a fitting structure forming method.

The fitting structure according to the present invention is formed on a fixing surface which is a surface for fixing a component, and a fitting projection provided on the side wall surface with a fitting claw for fitting the component is formed by the fitting claw. And a rib formed integrally with the fitting protrusion on the front fixing surface on the side of the side wall surface of the fitting protrusion, the rib being formed integrally with the fitting protrusion. hole of at least the fitting pawl width are formed from the top toward the bottom of the fitting pawl, the fitting pawl is, the fitting projection and the ribs a mold for integrally forming, self from the hole fitting pawl It is formed by a mold having a shape that can be pulled out in the direction opposite to the claw side of the claw, and the component is fitted by fitting the component between the fitting claw and the rib.

A fitting structure forming method according to the present invention includes a fitting protrusion formed on a fixed surface, which is a surface for fixing a component, and a fitting claw for fitting the component on a side wall surface, and a fitting claw And a rib formed integrally with the fitting projection on the fixed surface on the front side of the side wall surface where the fitting projection is formed. A hole for forming at least the fitting claw width is formed at the lower part of the fitting claw, and fitting for integrally forming a fitting structure for fitting the part by fitting the part between the fitting claw and the rib. a coupling structure formation method, a first mold for integrally forming the fitting projection and the ribs, together with the hole and the fitting claw in the fitting protrusion forms a side of the surface opposite to the surface provided The first mold has a shape that can be removed from the hole toward the opposite side of the mating claw. By a die to form the upper part of the rib and fitting pawl, a first mold slide in a direction opposite to the ribs around the hole gold forms a fitting pawl, a second The fitting structure is formed by removing the mold.

  According to the present invention, it is possible to form a fitting structure that facilitates removal of a slide mold that forms these in a fitting structure that includes other protrusions in front of the claw side of the fitting claw.

It is a rear view of the state which opened the foldable mobile telephone. FIG. 4 is an explanatory view showing a speaker unit mounting portion in the transmission side housing 1 and a sectional view of the transmission side housing 1 including the speaker unit 4. It is an expanded sectional view of a speaker unit attachment site. It is a front view which shows the state which provided the cushion 8 on the speaker unit 4. FIG. It is a perspective view which shows a speaker unit attachment site | part. It is explanatory drawing which shows the example of the method of forming the rib 7 and the fitting nail | claws 9 and 10 on the rear case 5. FIG. It is a perspective view which shows a speaker unit attachment site | part. It is explanatory drawing which shows the minimum structure of this invention. It is explanatory drawing which shows the example of the fitting structure in which the other protrusion was formed in addition to the fitting protrusion.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  1-3 is explanatory drawing which shows one Embodiment of the fitting structure by this invention. In the present embodiment, a case where the fitting structure according to the present invention is applied to a speaker unit mounting portion in a mobile phone will be described as an example. FIG. 1 is a rear view of a state in which a foldable mobile phone is opened. As shown in FIG. 1, the mobile phone has a transmitter-side housing 1 and a receiver-side housing 3 coupled by a hinge, and has a speaker portion 2 on the back side near the hinge portion of the transmitter-side housing 1. . Having the speaker unit 2 in the transmission side housing 1 contributes to the thinning of the receiver side housing 3.

  FIG. 2A is an explanatory diagram showing a speaker unit mounting portion and the like inside the transmitter-side housing 1. As shown in FIG. 2A, the speaker unit 4 is attached to the speaker unit attachment site. FIG. 2B is a cross-sectional view of the transmission-side housing 1 including the speaker unit 4 and is a cross-sectional view taken along the line A to A. FIG. 3 is an enlarged cross-sectional view of the speaker unit mounting portion a in FIG. As shown in the enlarged sectional view of FIG. 3, the speaker unit mounting portion a includes a speaker unit 4, a rear case 5 of a mobile phone, a rib 7, a cushion 8, and fitting claws 9 and 10. . The rear case 5 has a hole 21 for outputting the sound output from the speaker unit 4 to the outside. The ribs 7 are formed at a height lower than the positions of fitting claws 9, 10 described later, and project on the rear case 5 at intervals that are narrower than the width of the speaker unit 4. By providing the rib 7 between the speaker unit 4 and the rear case 5, a sound hole space 6 for ensuring a certain acoustic characteristic is formed. A cushion 8 for preventing sound leakage is provided between the rib 7 of the rear case 5 and the speaker unit 4. When the cushion 8 is pressed by the speaker unit 4 and the rib 7, a sealed space is formed. By forming this sealed space, it is possible to prevent deterioration of acoustic characteristics due to sound leakage in the mobile phone. FIG. 4 is a front view showing a state in which the cushion 8 is provided on the speaker unit 4. The cushion 8 is provided so as to surround the outer periphery of the speaker unit 4.

  FIG. 5 is a perspective view showing a speaker unit attachment site before the speaker unit 4 and the cushion 8 are attached. As shown in FIG. 5, the fitting claws 9 and 10 are provided on the side wall surfaces of the fitting projections 19 and 20 provided on the rear case 5, respectively, so that the speaker unit 4 (not shown in FIG. 5) is clawed. In addition, it serves to press the cushion 8 (not shown in FIG. 5) against the rib 7. By using the fitting structure using the fitting claws 9, 10 and the rib 7, the speaker unit 4 can be stably held. The two fitting protrusions 19 and 20 are provided at a wider interval than the rib 7, and the fitting claws 9 and 10 are formed so as to face each other in the direction of the rib 7. That is, the rib 7 is formed in front of the claw side of the fitting claws 9 and 10.

  Moreover, the width | variety of the fitting claws 9 and 10 or the hole 13 wider than the width | variety is formed in the lower part of the fitting claws 9 and 10 provided in the fitting protrusions 19 and 20. That is, holes 13 are formed in the fitting protrusions 19 and 20 from the surface of the rear case 5 to the lower portions of the fitting claws 9 and 10 as shown in FIG. The fitting claws 9 and 10 are formed to have a width of the hole 13 or a width narrower than the hole 13. By providing the hole 13, the mold for forming such a fitting structure can be extracted in the direction A1 opposite to the claw side of the fitting claws 9, 10. In the example of FIG. 5, the hole 13 is formed to have the same width as the fitting claws 9 and 10.

  FIG. 6 is an explanatory diagram illustrating an example of a method of forming the rib 7 and the fitting claws 9 and 10. As illustrated in FIG. 6, the rib 7 and the fitting claws 9 and 10 (that is, the fitting structure) are formed using three slide molds K1, K2, and K3. The mold K1 is molded so as to form a fitting protrusion 19 (not shown in FIG. 6) and a hole 13 on the opposite side to the surface on which the fitting claw 9 is provided. The mold K <b> 2 is formed so as to form a fitting protrusion 20 (not shown in FIG. 6) and a hole 13 on the side opposite to the surface on which the fitting claw 10 is provided. The mold K3 is formed so as to form the ribs 7, the holes 21, and the upper portions of the fitting claws 9, 10.

  After forming the fitting structure using the molds K1, K2, and K3 molded as described above, the mold K1 is in the opposite direction to the fitting claw 9, and the mold K2 is in the opposite direction to the fitting claw 10. Each slides. That is, the molds K1 and K2 are taken out in the direction A shown in FIG. 6 (that is, the direction opposite to the rib 7 with the hole 13 as the center). The mold K3 is slid toward the vertical direction A2 of the rear case 5. Thus, even if it is a fitting structure provided with the rib 7 ahead of the nail | claw side of the fitting claws 9 and 10, the taking out of the slide metal mold | die which forms these can be performed easily. That is, even when the rib 7 structure is formed near the side where the fitting claws 9 and 10 are protruding, it is possible to easily take out the slide mold for forming these.

  In particular, when the fitting structure described in the present embodiment is used for a speaker unit mounting portion, as shown in FIG. 3, a sound hole space 6 can be secured near the speaker unit 4 and a cushion for preventing sound leakage is provided. Since the rib 7 matched to the shape of 8 can be configured, a stable sound can be provided to the user.

  The fitting structure according to the present invention is formed on the rear case 5. The fitting projections 19 and 20 are provided on the side wall surface with the fitting claws 9 and 10 for fitting the speaker unit 4. , 10 are provided on the rear case 5 on the side wall surface side of the fitting projections 19 and 20 on which the ribs 7 are projected lower than the positions of the fitting claws 9 and 10. The fitting protrusions 19 and 20 are formed with holes 13 having a width of at least the fitting claws 9 and 10 from the rear case 5 to the lower portions of the fitting claws 9 and 10. The speaker unit 4 is fitted by fitting the speaker unit 4 between the fitting claws 9 and 10 and the rib 7. With such a structure, even if it is a fitting structure provided with the rib 7 in front of the claw side of the fitting claws 9, 10, it is possible to easily take out the slide mold that forms them. That is, even when the rib 7 structure is formed near the side where the fitting claws 9 and 10 are protruding, it is possible to easily take out the slide mold for forming these.

  Next, a modified example of the fitting structure according to the present invention will be described. A modification of the fitting structure according to the present invention is shown in FIG. FIG. 7 is a perspective view showing a speaker unit mounting portion before the speaker unit 4 and the cushion 8 are mounted. In the example shown in FIG. 5, holes 13 having the same width as the fitting claws 9 and 10 are formed in the fitting protrusions 19 and 20. On the other hand, the example shown in FIG. 7 is different from the above embodiment in that a hole 15 having a width wider than that of the fitting claw 10 is formed in the fitting projection 20. At this time, the width of the fitting protrusion 20 may be wider than the hole 15. The hatched portion of the hole 15 shown in FIG. 7 indicates the range of the hole that is wider than the hole 13 shown in FIG. In the example shown in FIG. 7, a hole 13 having the same width as the fitting claw 9 is formed in the fitting protrusion 19, and a rib 16 connected to the rear case 5 and the fitting protrusion 19 is formed on the side of the hole 13. It is different from the above embodiment in that it is formed. Other than that is the same as that of the said embodiment.

  Even with a fitting structure in which the holes 15 are opened beyond the width of the fitting claw 10, the slide mold forming this structure can be easily taken out. Thus, the weight of the apparatus can be reduced by increasing the size of the hole. Further, as shown in FIG. 7, a rib 16 connected to the rear case 5 and the fitting protrusion 19 may be formed beside the hole 13 of the fitting protrusion 19. In this case, since the fitting claws 9 can be reinforced by the ribs 16, the strength difference from the case where the holes 13 are not opened can be eliminated.

  In the above description, the case where the fitting structure in the present invention is applied to the speaker unit mounting portion in the mobile phone has been described, but the object to which the fitting structure in the present invention is applied is limited to the speaker unit mounting portion in the mobile phone. Not.

  Next, the minimum configuration of the present invention will be described. FIG. 8 is an explanatory diagram showing the minimum configuration of the present invention. The fitting structure in the present invention is formed on a fixing surface 81 (for example, the rear case 5) that is a surface for fixing a component (for example, the speaker unit 4), and a fitting claw 82 (for fitting the component). For example, the fitting protrusion 83 (for example, the fitting protrusion 20) in which the fitting claws 9, 10) are provided on the side wall surface, and the fixing surface on the side of the side wall surface of the fitting protrusion 83 in which the fitting claws 82 are formed. A rib 84 (for example, rib 7) is provided on the upper 81 so as to protrude below the position of the fitting claw 82.

  The fitting projection 83 is formed with a hole 85 (for example, a hole 13) having a width of at least the fitting claw 82 from the fixing surface 81 to the lower portion of the fitting claw 82, and between the fitting claw 82 and the rib 84. The part is fitted by fitting the part into the part.

  With such a configuration, in a fitting structure provided with other protrusions in front of the claw side of the fitting claw, it is possible to easily take out the slide mold forming these.

  Further, the above embodiment discloses a fitting structure and a fitting structure forming method having the following configuration.

(1) A fitting claw (for example, a fitting claw 9, for example) formed on a fixed surface (for example, the rear case 5) that is a surface for fixing a component (for example, the speaker unit 4). 10) on the side of the fitting projection (for example, the fitting projection 20) provided on the side wall surface and on the front side of the side surface of the fitting projection on which the fitting claw is formed. Ribs (for example, ribs 7) projecting low are provided, and the fitting protrusion is formed with a hole portion (for example, hole 13) having at least the fitting claw width from the fixed surface to the lower portion of the fitting claw. A fitting structure characterized by fitting a part by fitting the part between the fitting claw and the rib.

(2) A fitting structure in which a hole (for example, hole 13) having a width equivalent to the width of the fitting claw is formed on the fitting projection from the fixed surface to the lower part of the fitting claw.

(3) A fitting structure in which a hole (for example, hole 15) having a width wider than the fitting claw width is formed on the fitting protrusion from the fixed surface to the lower part of the fitting claw.

(4) A fitting structure in which a fixing surface and a reinforcing portion (for example, a rib 16) connected to the fitting protrusion are formed beside the hole portion of the fitting protrusion.

(5) A fitting structure in which the component to be fixed is a speaker unit (for example, the speaker unit 4).

(6) A fitting claw (for example, a fitting claw 9, for example) formed on a fixing surface (for example, the rear case 5) that is a surface for fixing a component (for example, the speaker unit 4). 10) is projected lower than the position of the fitting claw on the fitting projection (for example, the fitting projection 20) provided on the side wall surface and the fixing surface on the side of the side wall surface where the fitting claw is formed. The fitting protrusion has a hole (for example, hole 13) having at least the width of the fitting claw extending from the fixed surface to the lower part of the fitting claw. A fitting structure forming method for forming a fitting structure for fitting a component by fitting the component between the rib and the rib, wherein the fitting is performed by a first mold (for example, a mold K1). Form a hole on the mating protrusion and a surface opposite to the surface on which the fitting claw is provided, and a second mold (for example, a mold) 2) By forming the rib and the upper part of the fitting claw, and by sliding the first mold around the hole in the direction opposite to the rib (for example, direction A1) and taking out the mold A fitting structure forming method, characterized by forming a fitting structure.

  The present invention is suitably applied to a fitting structure that fixes a member using a fitting claw.

DESCRIPTION OF SYMBOLS 1 Transmission side housing | casing 2 Speaker part 3 Receiver side housing | casing 4 Speaker unit 5 Rear case 6 Sound hole space 7, 16 Rib 8 Cushion 9,10 Fitting claw 13,15 Hole 19,20 Fitting protrusion 21 Hole a Speaker Unit mounting part K1, K2, K3 Mold

Claims (6)

A fitting projection formed on a fixing surface, which is a surface for fixing the component, and a fitting claw for fitting the component is provided on the side wall surface;
A rib that protrudes lower than the position of the fitting claw on the fixed surface on the side of the side wall surface of the fitting projection on which the fitting claw is formed, and is formed integrally with the fitting projection,
The fitting protrusion has at least a hole of the fitting claw width from the fixed surface to the lower part of the fitting claw,
The fitting pawl is a mold for integrally forming with the said fitting projection rib, the mold shape which can be withdrawn from the hole toward a direction opposite to the claw side of the self-fitting claws is formed by,
A fitting structure characterized by fitting a part by fitting the part between the fitting claw and the rib. The fitting structure according to claim 1, wherein a hole having a width equivalent to the width of the fitting claw is formed on the fitting protrusion from the fixed surface to a lower portion of the fitting claw. The fitting structure according to claim 1, wherein a hole having a width wider than the fitting claw width is formed on the fitting projection from the fixed surface to a lower portion of the fitting claw. The fitting structure according to any one of claims 1 to 3, wherein a fixing surface and a reinforcing portion connected to the fitting protrusion are formed beside the hole portion of the fitting protrusion. The fitting structure according to any one of claims 1 to 4, wherein the component to be fixed is a speaker unit. A fitting projection formed on a fixing surface, which is a surface for fixing the component, and a fitting claw for fitting the component on the side wall surface; and a front side of the side wall surface on which the fitting claw is formed. A rib that protrudes lower than the position of the fitting claw on the fixed surface and is integrally formed with the fitting protrusion, and the fitting protrusion includes a lower portion of the fitting claw from the fixed surface. Forming a fitting structure for integrally forming a fitting structure for fitting the part by fitting the part between the fitting claw and the rib. A method,
The first mold for integrally forming the fitting protrusion and the rib forms the opposite side of the surface of the fitting protrusion where the hole and the fitting claw are provided, and the first Forming the fitting claw in a shape that allows one mold to be extracted from the hole portion toward the opposite side of the claw side of the fitting claw ;
The second mold forms the rib and the upper part of the fitting claw,
The fitting structure forming method, wherein the fitting structure is formed by sliding the first mold in the direction opposite to the rib around the hole and taking out the mold.

Images