JP2008070517A - Panel attaching structure and image display device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a technique to widen tolerance to error occurring in a position of fitting of a front cover and a cabinet in an image display device. <P>SOLUTION: Cover fitting portions 20a, 20b to engage the main cabinet 21 in the front cover 18 are arranged on the outer parts of a frame shape of the main cabinet 21. A plurality of slender rectangular cabinet holes 24 are arranged on the cover fitting portions 20a, 20b. Pawls are arranged on the periphery of the first and second cover fitting portions 20a, 20b. The front cover 18 has a frame shape and ribs 30 are arranged on its outer peripheral portion. Fitting is conducted by inserting the ribs 30 into the cover fitting portions 20a, 20b. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a panel mounting structure and an image display device, and more particularly to a panel mounting structure for mounting a panel such as a decorative cover to a cabinet by fitting and an image display device including the panel mounting structure.

  Recent image display devices such as liquid crystal televisions and plasma televisions are remarkably large. LCD TVs that are over 40 inches in size are now relatively easy to purchase for general consumers, and sales are expanding accordingly.

  In an environment where the sales volume of large-sized televisions has grown dramatically as in recent years, competition has intensified compared to before. In such a situation, even if the cost per TV is slightly reduced, the total cost reduction cannot be ignored. Each manufacturer carries out various improvement activities in order to realize such improvements. In addition to the internal structure that determines the function, the quality of the exterior part that does not affect the function is also a factor in product differentiation. Therefore, it is necessary to reduce the cost while maintaining or improving the quality of the exterior portion.

  If the parts for the exterior part are non-defective products at the tolerance limit, assembly may not be successful during actual assembly. In addition, when assembling parts that are non-defective at the tolerance limit, it may not be possible to assemble them smoothly. In such a case, it is necessary to work while adjusting the assembly position, and workability is reduced.

  In particular, an increase in the size of a product may cause an unacceptable error in manufacturing variations. For example, in the case of a resin (plastic) part, it is cooled after injection molding at the time of molding, but the shape slightly shrinks at the time of cooling. Although designed in consideration of the error due to the shrinkage, it may inevitably come off from non-defective products due to manufacturing variations. In particular, due to the increase in size of the parts, the amount when the size of the above-described shape is reduced also increases. Therefore, it is essential to improve the yield of non-defective products and the work efficiency in the manufacturing stage.

  In order to realize such an improvement in workability, a technique for facilitating a mounting structure for a predetermined part at the time of assembling the display device is disclosed (see Patent Document 1). The technique disclosed in Patent Document 1 facilitates the work when the optical filter is attached to or removed from the display device. Specifically, a plurality of holes are opened in the peripheral part of the optical filter. On the other hand, a protrusion-like locking tool projecting from the front frame is provided at a corresponding portion of the front frame of the display device. The locking tool is inserted into a hole opened in the optical filter to engage the optical filter with the front frame. Furthermore, a decorative frame is provided to cover the mounting portion of the optical filter. A protrusion-like locking tool projecting from the back surface of the decorative frame is inserted into a hole opened in a corresponding portion of the front frame and attached to hold the optical filter in a desired position.

  In addition, there is a technique in which a projection is provided on a part of the exterior frame for positioning and fixing when the decorative plate is attached to the exterior frame case of the display device (see Patent Document 2).

Japanese Patent Laid-Open No. 10-41651 Japanese Utility Model Laid-Open No. 1-137754

  By the way, in the exterior of the display device, the decorative frame or the like is often fixed with a double-sided adhesive tape. Moreover, the attachment of the double-sided adhesive tape has been a laborious operation. Further, if the adhesive strength is weak, there is a risk of peeling. Therefore, it was necessary to attach a thing with high adhesive force over a wide area. Furthermore, it was necessary to apply pressure uniformly using a jig in order to attach the double-sided adhesive tape to the cabinet and to secure the adhesive strength of the double-sided adhesive tape. Those having high adhesive strength were particularly required to be handled carefully and were troublesome to handle.

  In the technique of Patent Literature 1, an exterior component such as a display device is fixed by engaging a claw-like protrusion with an opening provided at a position corresponding to the protrusion without using a double-sided adhesive tape. However, when the exterior part is molded from, for example, plastic, an error often occurs in the dimensions as described above. If the component is relatively small in size, the generated variation, that is, the dimensional error is small. However, in the current situation where the display device is becoming larger as in recent years, there has been a problem that a dimensional error increases and a case where the exterior part cannot be properly engaged occurs. Also, screws were sometimes used to fix exterior parts, but in this case as well, the bosses (holes) provided in the front cover and the screw holes provided in the cabinet are misaligned and the screws are hit. There was something that could not be done. Moreover, since the screw is used, the cost is increased due to the type and quantity of the screw.

  FIG. 13 is a diagram showing a fitted state between the front cover 92 and the cabinet 90 of the display device, FIG. 13 (a) shows a properly fitted state, and FIG. FIG. 13C illustrates a state in which the front cover 92 is small or the cabinet 90 is large, and FIG. 13C illustrates a state in which the front cover 92 is large or the cabinet 90 is small.

  When fitted in the state shown in FIG. 13B, the claw 94 is not engaged with the engagement hole 96 provided in the cabinet 90, and the front cover 92 may be removed. When fitted in the state shown in FIG. 13C, the claw 94 is not inserted into the engagement hole 96, and the front cover 92 is in a floating state. Further, if the nail 94 is forcibly inserted, the nail 94 may be damaged. In addition, when the engagement cannot be properly performed at one place, in general, the engagement cannot be properly performed at other places.

  Moreover, according to the technique of patent document 2, positioning becomes easy. Moreover, since the double-sided adhesive tape is used for fixing, the engagement positions of the components do not shift when the components are attached. However, since the double-sided adhesive tape is used, the above-mentioned problems and problems such as taking time and labor to separate members at the time of recycling and dismantling become obvious.

  The present invention has been made in view of such a background, and an object of the present invention is to provide a technique for widening an allowable range of an error occurring in a fitting position between a front cover and a cabinet.

One embodiment of the present invention relates to a panel mounting structure. In this panel mounting structure, the cabinet and the panel are engaged by a hole provided with a claw provided around the cabinet and a rib provided on the back surface of the frame-like panel and having a shape that engages with the claw. In the panel mounting structure, the hole provided with the claw includes an inner claw hole provided on the central side of the cabinet and an outer claw provided on the outer side of the cabinet. The rib has a shape with which the claw is engaged. Here, the panel refers to a part attached to the cabinet such as a decorative cover and is different from the display panel.
The rib of the panel may have an engagement hole that engages with the claw.
The hole of the cabinet and the rib of the panel may be arranged along the outer shape of the cabinet and the panel, and the number of the inner clawd hole and the outer clawd hole may be substantially the same. . Here, for example, if the cabinet or the panel is frame-shaped, it means both the outer peripheral side and the inner peripheral side of the frame.
Further, in the panel mounting structure, the claw may have a different direction of engagement from a claw provided in at least one of the adjacent holes.
The panel may have a frame shape, the rib may be provided on an outer peripheral side or an inner peripheral side of the frame shape of the panel, and the rib is provided on the back surface of the panel in the frame shape. A fitting claw may be provided on the peripheral side, and a slit may be provided in the cabinet at a position where the fitting claw is fitted to the fitting claw, and the fitting claw holds the slit from the outside. May be engaged.
Another embodiment of the present invention relates to an image display device. This image display device includes the panel mounting structure described above.

  According to the present invention, in the image display device, it is possible to widen an allowable range of errors that occur in the fitting position between the front cover and the cabinet.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
<Embodiment 1>
FIG. 1 is a diagram showing a schematic appearance of a thin image display apparatus 10 according to the present embodiment. The thin image display device 10 includes a display unit main body 12 and a stand 14. The display unit body 12 includes a cabinet 16 and a front cover 18 as exterior parts. The cabinet 16 and the front cover 18 are made of a resin material such as plastic.

  FIG. 2 is a rear view of the cabinet 16 according to the present embodiment. The cabinet 16 includes a main cabinet 21 that mainly holds a display panel (not shown), and a sub-cabinet 23 that is provided below the main cabinet 21 and covers a speaker and the like. Further, the main cabinet 21 and the sub cabinet 23 are formed as one component. Further, a front cover 18 is fitted on the front surface of the main cabinet 21 so as to cover it. The position where the sub-cabinet 23 is provided is not limited to the lower side, and may be provided on both sides or not (including the case where it is separated from the main cabinet 21) depending on the product specifications.

  Hereinafter, the structure of the main cabinet 21 and the front cover 18 that are characteristic of the present embodiment will be described first, and then their fitting will be described. Note that the characteristic structure of this embodiment will be mainly described, and the description of other structures will be omitted as appropriate.

  As shown in FIG. 2, the main cabinet 21 has a frame shape having a rectangular opening at the center, and holds the outer peripheral portion of the display panel (not shown) at the frame shape portion. Cover engaging portions 20 a and 20 b that engage with the front cover 18 are provided on the outer portion of the frame shape of the main cabinet 21. The cover engaging portions 20a and 20b are provided with a plurality of elongated rectangular cabinet holes 24 having a predetermined size as will be described later with reference to FIG. Claws are provided on the peripheral portions of the cover engaging portions 20a and 20b. There are two types of the cover engaging portions 20a and 20b, and the claw provided on the side in the outer side of the main cabinet 21 is referred to as a “first cover engaging portion 20a”, and the claw is in the main cabinet 21 in the inner side direction. What is provided on the side is referred to as a “second cover engaging portion 20b”. Hereinafter, when the two types of cover engaging portions are not distinguished, they are simply referred to as “cover engaging portions 20”. Furthermore, the nail | claw provided in the 1st cover engaging part 20a is called the outer side nail | claw 22a. Further, the claw provided in the second cover engaging portion 20b is referred to as an inner claw 22b. When the outer claw 22a and the inner claw 22b are not distinguished, they are simply referred to as “claw 22”.

  In FIG. 2, nine cover engaging portions 20 are provided on the upper side and the lower side of the main cabinet 21, respectively, and the claw 22 provided on the cover engaging portion 20 has the leftmost outer claw 22a on both sides. Further, outer claws 22a and inner claws 22b are alternately provided.

  In addition, four cabinet holes 20 are provided on the left side and the right side of the main cabinet 21 respectively. The claws 22 provided in the cabinet holes 20 have an inner claw 22b, an outer claw 22a, An outer claw 22a and an inner claw 22b.

  3 is a view showing the outer claw 22a and the cabinet hole 24 provided with the outer claw 22a, FIG. 3 (a) is a front view of the outer claw 22a, and FIG. 3 (b) is a view of FIG. 3 (a). It is AA sectional drawing. As shown in the figure, an outer claw 22a is formed on the side of the cabinet hole 24 in the outer direction of the main cabinet 21 so that the back side (right side in the figure) is raised. It extends slightly beyond the center of 24.

  Similarly, FIG. 4 is a view showing the inner claw 22b, FIG. 4 (a) is a front view of the inner claw 22b, and FIG. 4 (b) is a sectional view taken along line BB in FIG. 4 (a). . As shown in this figure, an inner claw 22b is formed on the side of the cabinet hole 24 in the inner direction of the main cabinet 21 so that the back side (the right side in the figure) is raised, and the end of the main cabinet 21 has a cabinet hole. It extends slightly beyond the center of 24.

  FIG. 5 is a schematic view of the front cover 18, FIG. 5 (a) is a front view, FIG. 5 (b) is a top view, FIG. 5 (c) is a bottom view, and FIG. ) Is a left side view, and FIG. 5 (e) is a right side view. FIG. 5A is a view showing the side (also referred to as “core side”) combined with the cabinet 16, and generally corresponds to the back side of the front cover 18.

  As shown in FIG. 5, the front cover 18 has a frame shape, and a rib 30 is provided on the outer peripheral portion thereof. In the drawing, nine ribs 30 are provided on the upper side and the lower side of the front cover 18, respectively, and four ribs 30 are provided on the right side and the left side, respectively.

  6 is an enlarged view of the rib 30, FIG. 6 (a) is a front view of FIG. 5 (b), and FIG. 6 (b) is a sectional view taken along the line CC in FIG. 6 (a). The rib 30 has an engagement hole 32. The engagement hole 32 is a rectangular hole and engages with the claw 22 when the front cover 18 and the main cabinet 21 are fitted. The shape of all the ribs 30 is substantially the same, but is not limited to this, and any shape that can be appropriately engaged with the claw 22 may be used.

  The fitting of the front cover 18 and the cabinet 16 (main cabinet 21) with the above configuration will be described. FIG. 7 is a view showing a state where the claw 22 and the rib 30 are ideally engaged. FIG. 7A shows a state in which the outer claw 22a included in the first cover engaging portion 20a and the rib 30 are engaged. FIG. 7B shows a state in which the inner claw 22b included in the second cover engaging portion 20b and the rib 30 are engaged. In the state shown in FIGS. 7A and 7B, the rib 30 of the front cover 18 is inserted into the design hole with respect to the cabinet hole 24 of the main cabinet 21.

  FIG. 8 shows a state where the insertion position of the rib 30 is shifted to the lower side of the figure of the cabinet hole 24 (the central side of the main cabinet 21). This engagement state occurs when the front cover 18 is small or the cabinet 16 is large. FIG. 8A shows an engaged state between the outer claw 22a and the rib 30, and the outer claw 22a and the rib 30 are not engaged. On the other hand, FIG. 8B shows an engaged state between the inner claw 22b and the rib 30, and the inner claw 22b and the rib 30 are engaged. Therefore, in the engaged state shown in FIG. 8B, the rib 30 and the cover engaging portion 20 are engaged, so that the front cover 18 and the main cabinet 21 are appropriately fitted as a whole. Note that the lower end portion (center side) of the front cover 18 has a leading end directed toward the inner side (right side in the figure).

  FIG. 9 shows a state where the insertion position of the rib 30 is shifted to the upper side of the cabinet hole 24 in this figure (outside of the main cabinet 21) contrary to FIG. 8. This engagement state occurs when the front cover 18 is large or the cabinet 16 is small. FIG. 9A shows an engaged state between the outer claw 22a and the rib 30, and the outer claw 22a and the rib 30 are engaged. On the other hand, FIG. 9B shows an engaged state between the inner claw 22b and the rib 30, and the inner claw 22b and the rib 30 are not engaged. Therefore, since the rib 30 and the claw 22 are engaged in any of the engagement states shown in FIG. 9A, the front cover 18 and the main cabinet 21 are appropriately fitted as a whole.

  As described above, both the outer claw 22a and the inner claw 22b are attached to the inside of the cabinet hole 24, and the direction of the engaging portion is the center side. Furthermore, the rib 30 to be inserted has no claw shape. For this reason, when the rib 30 is inserted in the cabinet hole 24, it is less likely to get caught. In addition, the error that is allowed in the insertion position, that is, the engagement position between the claw 22 and the rib 30 is wider than in the conventional case.

  As described above, when the front cover 18 and the main cabinet 22 are fitted to each other, even if the claw 22 and the rib 30 are not properly engaged on either the outer side or the inner side, they are appropriate on the other side. Is engaged. Therefore, even if an error occurs in which a non-defective product cannot be assembled as a conventional product, the non-defective product can be assembled with the above-described configuration. Thereby, the yield of components can be improved.

  In addition, for example, even when several engagement structures are released due to an unforeseen load, the direction of engagement is different, so the adjacent engagement state is released. Can be avoided. As a result, the fitting state between components can be maintained.

  Furthermore, in the past, assuming that the engagement structure as described above has been released, a double-sided adhesive tape may be applied between the cabinet 16 and the front cover 18 to reinforce the fitting. . According to this embodiment, the double-sided adhesive tape can be omitted. Moreover, even if it is a case where a double-sided adhesive tape is not abbreviate | omitted, since the adhesive force required may be lower than before, the quantity of the double-sided adhesive tape to be used can be reduced, for example. When the double-sided adhesive tape is used, it takes time not only at the time of manufacture but also at the time of repair, for example, but the time and effort can be reduced by the above-described embodiment.

<Embodiment 2>
In the first embodiment, the cabinet 16 and the front cover 18 are configured to be fitted at their outer portions. In Embodiment 2, it is assumed that not only the outer portion but also the inner portion is fitted, and the fitting of the inner portion will be described below. In addition, about the fitting of an outer peripheral part, since it is the same as Embodiment 1, description is abbreviate | omitted suitably.

  FIG. 10 is a perspective view of the cabinet 56 and the front cover 58 according to the second embodiment. These are similar to the structure shown in the first embodiment, but are different in that they are also fitted in the inner portions of the respective frame shapes. The main cabinet 62 is provided with a total of 28 slits 60 in the inner part of the frame shape. More specifically, nine slits 60 are provided on the upper side and the lower side of the main cabinet 62, respectively. Five slits 60 are provided on the left side and the right side of the main cabinet 62, respectively.

  FIG. 11 shows a sectional view taken along the line DD in FIG. The front end portion 68 of the front cover 58 on the lower side (opening center direction) of the front cover 58 faces inward (right side of the figure). As described above, the slit 60 is provided at the lower end of the main cabinet 62 in the figure. Furthermore, an inner fitting claw 66 is provided on the inner upper surface of the front end portion 68 of the front cover 58. The inner fitting claw 66 engages with the inner end portion of the main cabinet 62. On the other hand, as shown in the first embodiment, the cover engaging portion 20 and the rib 30 are engaged on the upper side of the figure. In this figure, only the engagement between the outer claw 22 a and the rib 30 is shown, but the upper engagement may be the engagement between the inner claw 22 b and the rib 30.

  FIG. 12 is an enlarged view of the engagement state between the slit 60 and the inner fitting claw 66. As can be seen from the figure, the inner fitting claw 66 provided at the tip part 68 has a shape in which the upper end part is inclined from the upper left to the lower right of the figure and the end is inclined. On the other hand, the lower end portion of the slit 60 also has a shape with an inclination at the end portion, which is inclined obliquely from the upper right to the lower right in the figure. When the inner fitting claw 66 comes into contact with the end portion of the main cabinet 62 so as to overlap and engage the back surface of the front cover 58 and the front surface of the main cabinet 62, the end portion of the slit 60 is easily formed by the above shape. It is pushed by the inner fitting claw 66 to deform upward in the figure so as to crush the slit 60. Therefore, the main cabinet 62 can be easily engaged even with a relatively weak force.

  Thus, the front cover 58 is fitted inside and outside the frame shape of the main cabinet 62. As a result, the front cover 58 and the main cabinet 62 are firmly fitted as compared with the conventional fixing method. Therefore, the double-sided adhesive tape that has been conventionally required is not necessary. Even when a double-sided adhesive tape is used, a small amount is sufficient.

  The present invention has been described based on the embodiments. This embodiment is an exemplification, and it is understood by those skilled in the art that various modifications can be made to combinations of the respective constituent elements, and such modifications are also within the scope of the present invention.

  The present invention can be widely applied to products in which a cover is attached to a cabinet. In particular, the display device can be widely applied to products in which a cover such as a decorative frame is attached to a cabinet.

1 is a diagram showing a schematic appearance of a thin image display device according to Embodiment 1. FIG. It is the figure which showed the cabinet which concerns on Embodiment 1. FIG. It is the figure which showed the outer side nail | claw and the cabinet hole provided with it. It is the figure which showed the inner side nail | claw. It is the schematic of a front cover. It is the figure which expanded and displayed the rib. It is the figure which showed the state which the nail | claw and the rib fit ideally. It is the figure which showed the state which the insertion position of the rib shifted | deviated to this figure lower side (center side of the main cabinet) of the cabinet hole. It is the figure which showed the state which the insertion position of the rib shifted | deviated to this figure upper side (outside of the main cabinet) of the cabinet hole. It is a perspective view of the cabinet and front cover in Embodiment 2. It is DD sectional drawing in FIG. It is the figure which expanded and displayed the engagement state of a slit and an inner fitting claw. It is the figure which showed the fitting state of the front cover and cabinet of the display apparatus of a prior art.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Thin image display apparatus 12 Display part main body 16 Cabinet 18 Front cover 20 Cover engaging part 20a 1st cover engaging part (hole with an outer nail | claw)
20b 2nd cover engaging part (hole with inner claw)
21 main cabinet 22 claw 22a outer claw 22b inner claw 23 sub cabinet 24 cabinet hole 30 rib 32 engagement hole 58 front cover 60 slit 62 main cabinet 66 inner fitting claw (fitting claw)

Claims (6)

A panel mounting structure in which a cabinet and a panel are engaged by a hole provided around the cabinet and provided with a claw, and a rib provided on the back surface of the panel and having a shape that engages with the claw. ,
The hole provided with the claw includes an inner claw hole provided on the central side of the cabinet and the claw provided with an outer claw provided on the outside of the cabinet.
The panel mounting structure, wherein the rib has a shape with which the claw is engaged.   The panel mounting structure according to claim 1, wherein the rib of the panel has an engagement hole that engages with the claw. The hole of the cabinet and the rib of the panel are arranged along the outer shape of the cabinet and the panel;
3. The panel mounting structure according to claim 1, wherein the inner claw-attached holes and the outer claw-attached holes are substantially the same number.   The panel mounting structure according to any one of claims 1 to 3, wherein the claw is different in engagement direction from a claw provided in at least one adjacent hole. The panel has a frame shape;
The rib is provided on the outer peripheral side or the inner peripheral side of the frame shape of the panel,
On the back surface of the panel, a fitting claw is provided on the peripheral side where the rib is not provided in the frame shape,
The cabinet is provided with a slit at a position where it is fitted with the fitting claw,
The panel fitting structure according to any one of claims 1 to 4, wherein the fitting claw is engaged while pressing the slit from the outside.   An image display device comprising the panel mounting structure according to claim 1.

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