JP4723912B2 - Chassis mating structure - Google Patents

Description

  The present invention relates to a chassis fitting structure suitably applied to, for example, an audio device, a navigation device, and the like.

  Various chassis fitting structures applied to audio devices, navigation devices, and the like have been put to practical use (for example, see Patent Documents 1 and 2). FIG. 26 is a perspective view schematically showing a fitting structure of the upper lid 2 with respect to the heat radiating plate 1 according to a conventional fitting structure of the chassis. FIG. 27 is a perspective view of the conventional upper lid 2 as seen from the front side. FIG. 28 is a perspective view of the conventional upper lid 2 as seen from the back side. FIG. 29 is a perspective view of the heat radiating plate 1 constituting the conventional bottom plate. A hole or groove 1a is formed in the heat radiating plate 1 constituting the bottom plate, and a claw 2a provided on the upper lid 2 can be temporarily fixed by engaging (hanging) with the hole or groove 1a. A plurality of screw portions 1b are formed in the heat radiating plate 1 constituting the bottom plate, and the claws 2a of the upper lid 2 are temporarily fixed by hooking the holes or groove portions 1a, and then a plurality of screws are screwed to the plurality of screw portions 1b. It is structured to be fixed.

Japanese Utility Model Publication No. 5-3613 Utility model registration No. 2522065

  In order to enhance the heat dissipation effect of the heat sink, for example, a heat sink made of aluminum die casting may be employed. When the conventional chassis fitting structure is applied to such a heat sink made of an aluminum material, there are the following problems.

  (1) The dimensional accuracy of the heat sink 1 cannot be increased to a necessary and sufficient level. In other words, due to the tolerance of the finished dimensions of the heat sink 1 and the upper lid 2, not only the dimensions at the time of assembly are unstable, but also when the claw 2 a of the upper lid 2 is caught in the hole or groove 1 a of the heat sink 1. The aluminum material is scraped and quality is deteriorated. (2) A plurality of screw portions 1b must be formed on the heat radiating plate 1, which increases the number of processing steps and increases the manufacturing cost.

  The object of the present invention is to secure the chassis stably to the chassis body without being affected by the finished dimensions, and to reduce the manufacturing cost compared to the conventional structure. To provide a composite structure.

In the structure for fitting and fixing the chassis to the chassis main body,
Provided on the chassis body, and a fitting portion that having a proximal end and a distal end,
Wherein it is attached to the chassis, with respect to the fitting portion, by sliding toward the base end side from the front end portion, and a fitting claw portion wherein Ru is configured to be mounted in the fitting portion,
The base end portion of the fitting portion is provided with a protruding portion pressed against the fitting claw portion in a state where the fitting claw portion is mounted on the fitting portion,
The distal end portion of the fitting portion is formed to be inclined with respect to the base end portion of the fitting portion in a direction opposite to the direction in which the protruding portion protrudes,
The protruding portion has a tapered shape that increases the pressing force of the fitting claw portion to the chassis, and the chassis is slid in a state where the fitting claw portion is attached to the protruding portion of the chassis body. It is the fitting structure of the chassis characterized by being fitted by.

The present invention is characterized by further comprising a fixing means for fixing the chassis is fitted to the chassis body.

  In the invention, it is preferable that the fixing means includes a screw for bringing the chassis into contact with the chassis main body.

  The present invention is characterized in that the relative position of the fitting claw portion can be visually confirmed with respect to the protruding portion.

The present invention also includes a plurality of fitting portions,
And a plurality of fitting claws configured to be detachably attached to the plurality of fitting parts, respectively.

  Further, the present invention is characterized in that the fixing means is configured in an aspect in which the chassis is pulled and brought into contact with the chassis body, or in an aspect in which the chassis is pressed against the chassis body.

According to the present invention, the chassis is slid with respect to the chassis body while the chassis is regulated by the chassis body. Therefore, the chassis can be stably and securely fixed to the chassis body without being affected by the chassis body and the finished dimensions of the chassis. Compared to the conventional structure, it is not necessary to increase the dimensional accuracy of the chassis main body and the like, and the manufacturing cost can be reduced. Since the number of parts such as screws can be reduced as compared with the conventional structure, the entire manufacturing cost can be reduced and the number of assembling steps can be reduced. In addition, the chassis is regulated by the chassis body with the claw fitting portion attached to the fitting portion. The assembly of the chassis itself can be simplified, and the tact time can be shortened. Moreover, the touch (so-called click feeling) which positioned the chassis to the chassis main body can be obtained by the protrusion part attached to the fitting part. In a state where the fitting claw is attached to the fitting portion, the protruding portion is pressed by the fitting claw, so that it is possible to absorb an error in dimensional accuracy of the chassis body and the like. Therefore, it is not necessary to increase the dimensional accuracy of the chassis body. Further, since the protruding portion has a tapered shape, the pressing force from the fitting claw portion can be gradually increased in a state where the fitting claw portion is attached to the fitting portion. Therefore, the assembly of the chassis can be facilitated, and the chassis can be tightly positioned on the chassis main body.
According to the present invention, the chassis can be fixed by the fixing means.

  According to the present invention, the chassis is brought into contact with the chassis body with a screw in a state where the chassis is positioned on the chassis body. That is, the chassis is fixed at the final position.

  According to the present invention, since the relative position of the claw fitting portion can be visually confirmed with respect to the protruding portion, the fitting state of the chassis can be easily determined.

  Moreover, according to this invention, the positioning precision of the chassis with respect to a chassis main body improves by a some fitting part and a some fitting nail | claw part.

  In addition, according to the present invention, since the chassis is pulled and brought into contact with the chassis main body or the chassis is pressed against the chassis main body and brought into contact with the chassis main body, the degree of freedom in layout is improved. Therefore, the versatility of the finished product can be improved.

  DESCRIPTION OF EMBODIMENTS Hereinafter, embodiments for carrying out the present invention will be described with reference to the drawings. The chassis fitting structure according to this embodiment is applied to an in-vehicle audio apparatus. However, the present invention is not limited to a vehicle-mounted audio device, and may be applied to various stationary or portable electronic devices. The following description also includes a description of the chassis fitting method.

  FIG. 1 is a view in the middle of assembly of a chassis according to an embodiment of the present invention. FIG. 1A is a perspective view showing a relationship between an upper lid 10 and a front plate 11 and the like, and FIG. It is an expansion perspective view of a fitting shape. 2A and 2B are views during the assembly of the chassis. FIG. 2A is a perspective view showing the relationship between the upper lid 10 and the heat sink 12 and the like, and FIG. 2B is an enlarged perspective view of the fitting shape of the main part. is there. The audio apparatus according to the present embodiment mainly includes a chassis main body 13 and an upper lid 10 as a chassis. The chassis main body 13 includes a front plate 11, a heat sink 12, a left plate 14, a rear plate 15, and a bottom plate (not shown). The upper lid 10 is configured to be fitted and fixed to the chassis main body 13 in which the plurality of parts 11, 12, 14, 15 are integrally assembled. Of the chassis body 13, the longitudinal direction of the front plate 11 is defined as the x direction, and the longitudinal directions of the heat sink 12 and the left plate 14 are defined as the y direction. The direction orthogonal to the x and y directions is defined as the z direction. 1 and 2, the x direction is represented by an arrow x, the y direction is represented by an arrow y, and the z direction is represented by an arrow z.

  The front plate 11 will be described. FIG. 3 is a perspective view of the front plate 11 as viewed from the front side. FIG. 4 is a perspective view of the front plate 11 as seen from the back side. This will be described with reference to FIGS. The front plate 11 is made of, for example, an electrogalvanized steel plate (Japanese Industrial Standard “SECC”) having a plate thickness of 1 mm. However, the thickness is not limited to 1 mm. The front plate 11 includes a main surface portion 16, a flange portion 17, and a bracket portion 18, and a fitting portion 19 described later is formed on a part of the main surface portion 16. The main surface portion 16 is formed along a virtual plane parallel to the xz plane, and a plurality of openings are formed in the main surface portion 16. A flange portion 17 is formed integrally with the outer edge portion of the main surface portion 16. The flange portion 17 is formed so as to protrude from the main surface portion 16 in the y direction by a predetermined small distance along a virtual plane parallel to the yz plane. In a state where the upper lid 10 is fitted and fixed to the chassis body 13, the chassis body 13 is stored in a console of the vehicle. The main surface portion 16 is provided with a pair of bracket portions 18 that protrude from the main surface portion 16 to the other in the y direction by a predetermined small distance. The pair of bracket portions 18 are spaced apart in the x direction.

  FIG. 5 is a plan view of the front plate 11, FIG. 6 is a front view of the front plate 11, and FIG. 7 is a side view of the front plate 11. FIG. 8 is a diagram showing in detail the thickness shape of the main part of the fitting part 19, and FIG. 9 is a front view showing the fitting part 19 partially enlarged. FIG. 10 is an enlarged front view showing the protruding portion 19a of the fitting portion 19, and FIG. 11 is a cross-sectional view of the protruding portion 19a. A pair of fitting portions 19 is formed at one end of the main surface portion 16 in the z direction. As shown in FIGS. 1B and 2B, a pair of fitting claws 20 attached to the upper lid 10 are detachably attached to the pair of fitting parts 19 respectively. A pair of fitting part 19 is spaced apart and arrange | positioned in the x direction one side and the other, and is formed in the same shape.

  As shown in FIGS. 6 and 9, the main surface portion 16 is formed with slits for forming the fitting portions 19 and openings 16 a for attaching the fitting claw portions 20 to the fitting portions 19. Yes. The opening 16a forms a hole that is slightly larger than at least the area of the surface of the fitting claw 20. The relative position of the fitting claw portion 20 of the upper lid 10 can be visually confirmed by the opening portion 16a formed in the main surface portion 16 with respect to the protruding portion 19a. Each fitting portion 19 forms a rectangular plate piece when viewed from the y direction, and is formed to slightly warp the other side in the y direction (see FIG. 8). That is, in order to smoothly and easily attach the fitting claw portion 20 to the fitting portion 19, the tip end portion 19c of the fitting portion 19 is formed so as to incline to the other side in the y direction. . Since each fitting part 19 is formed so as to be slightly warped in the other in the y direction, the chassis main body is controlled while the y direction one end 21a of the upper lid body 21 of the upper lid 10 is regulated at the reference position P1 of the front plate 11. 13, the upper lid 10 can be relatively slid to be positioned. The reference position P1 is synonymous with the reference surface of the front plate 11 for positioning the one end portion 21a in the y direction of the upper lid 10.

  The slit includes first, second and third slits 16b, 16c and 16d. A distal end portion 19c of each fitting portion 19 is mainly formed by the first and second slits 16b and 16c, and a proximal end portion 19b of each fitting portion 19 is mainly formed by the third slit 16d. The first slit 16b is connected to the third slit 16d via the bent portion 22, and the extending direction of the first slit 16b and the extending direction of the third slit 16d are formed to be parallel to the x direction. Yes. The bent portion 22 is a so-called step, and a part of the fitting claw portion 20 is tightly supported by the bent portion 22. The base end portion 19b of each fitting portion 19 is provided with a protruding portion 19a that is a predetermined small distance projecting in one direction in the y direction. The protruding portion 19a is pressed against the fitting claw portion 20 when the fitting claw portion 20 is attached to the fitting portion 19, and has a diameter of, for example, about 2 mm and a height from the base end portion 19b. It is defined as 0.2 mm. The protruding portion 19a is formed in a tapered circular shape such that the diameter decreases from the proximal end portion 19b having a diameter of about 2 mm toward the distal end portion.

  As shown in FIGS. 5 to 7, the main surface portion 16 is provided with a support portion 23 for supporting a part of the upper lid main body 21. In the main surface portion 16, the support portion 23 is attached in the vicinity of the fitting portion 19 on one side in the x direction. The support portion 23 is formed so as to protrude from the main surface portion 16 to the other side in the y direction. As shown in FIGS. 1 and 2, when the fitting claw portion 20 of the upper lid 10 is attached to the fitting portion 19, a part of the upper lid body 21 is supported by the support portion 23 and the second portion of the upper lid body 21. The vicinity of the bracket is supported on the left plate 14, and the vicinity of the third bracket of the upper lid body 21 is supported on the rear plate 15. The upper lid 10 can be supported along the xy plane at these three locations.

  The heat sink 12 will be described. FIG. 12 is a perspective view of the heat sink 12 as viewed from the back side. FIG. 13 is a perspective view of the heat sink 12 as viewed from the front side. The heat sink 12 is connected to one bracket portion 17 or the like of the front plate 11, and the heat sink 12 is disposed along a virtual plane parallel to the yz plane. The heat sink 12 is made of, for example, aluminum die casting. The outer surface portion 12a of the heat sink 12 is formed in a concavo-convex shape so as to enhance the heat dissipation effect. A pair of round holes 12b as guide holes are formed at one end of the heat sink 12 in the z direction. The pair of round holes 12b are spaced apart from one and the other in the y direction, and have the same dimensions. When the fitting claw portion 20 is attached to the fitting portion 19, a pair of guide pins 24 provided on the upper lid 10 are inserted while being guided by the pair of round holes 12b. Each round hole 12b is formed as a long hole extending a predetermined small distance in the y direction. A counterbore 12c is formed near the middle of the y direction at one end of the heat sink 12 in the z direction. The pair of guide pins 24 and the pair of round holes 12b correspond to restriction means.

  The left plate 14 will be described. FIG. 14 is a perspective view of the left plate 14 as seen from the back side, and FIG. 15 is a perspective view of the left plate 14 as seen from the front side. The left plate 14 is connected to the other bracket portion 17 and the like of the front plate 11, and the left plate 14 is disposed along a virtual plane parallel to the yz plane. The left plate 14 is formed of, for example, an electrogalvanized steel plate having a thickness of 1 mm (Japanese Industrial Standard “SECC”). A bracket 25 is integrally formed at one end of the left plate 14 in the y direction. A pair of guide pins 26 is formed at one end of the left plate 14 in the z direction. The pair of guide pins 26 are spaced apart in the y direction, and each guide pin 26 is formed to protrude outward in the x direction. When the fitting claw portion 20 is attached to the fitting portion 19, the pair of guide pins 26 are inserted while being guided by the pair of round holes 27 formed in the upper lid 10.

  The rear plate 15 will be described. FIG. 16 is a perspective view of the rear plate 15 viewed from the back side, and FIG. 17 is a perspective view of the rear plate 15 viewed from the front side. A rear plate 15 is connected to one end of the heat sink 12 in the y direction and one end of the left plate 14 in the y direction, and the rear plate 15 is disposed along a virtual plane parallel to the xz plane. The rear plate 15 is formed of, for example, an electrogalvanized steel plate (Japanese Industrial Standard “SECC”) having a plate thickness of 1 mm. The front plate 11, the heat sink 12, the left plate, the rear plate 15, and a bottom plate (not shown) form a bottomed rectangular frame.

  The upper lid 10 will be described. FIG. 18 is a perspective view of the upper lid 10 as viewed from the front side, and FIG. 19 is a perspective view of the upper lid 10 as viewed from the back side. 20 is a plan view of the upper lid 10, FIG. 21 is a front view of the upper lid 10, and FIG. 22 is a rear view of the upper lid 10. FIG. 23 is a side view of one side of the upper lid 10, and FIG. 24 is a side view of the other side of the upper lid 10. FIG. 25 is a view showing the main part (guide pin) of FIG. 24, FIG. 25 (a) is an enlarged view of the guide pin, and FIG. 25 (b) is a sectional view of the guide pin.

  The upper lid 10 is made of, for example, an electrogalvanized steel sheet having a thickness of 1 mm (Japanese Industrial Standard “SECC”). The upper lid 10 includes an upper lid main body 21, first to third brackets 28, 29, 30 and a pair of fitting claws 20. The upper lid main body 21 is formed in a rectangular plate shape formed along the xy plane. A pair of fitting claws 20 are integrally attached to one end 21 a in the y direction of the upper lid body 21. The position of the surface portion of the fitting claw portion 20 is defined with reference to the one end portion 21a in the y direction. Specifically, for example, a gap δ larger than the thickness dimension of the front plate 11 by a predetermined small distance is formed between the one end portion 21a in the y direction and the surface portion of the fitting claw portion 20. A pair of fitting nail | claw parts 20 are spaced apart and arrange | positioned in the x direction one side and the other, and are formed in the same shape. Each fitting nail | claw part 20 is arrange | positioned along the virtual plane parallel to xz plane. Each fitting claw portion 20 is formed in a rectangular shape when viewed in the y direction, and the corner portion of each fitting claw portion 20 is rounded or chamfered.

  A first bracket 28 is formed at one end of the upper lid body 21 in the x direction. A pair of guide pins 24 are attached to the first bracket 28. The pair of guide pins 24 are disposed apart from one and the other in the y direction and are formed in the same shape. As shown in FIG. 25, each guide pin 24 is defined to have a diameter of about 3 mm and a height from the first bracket 28 of about 2.2 mm, for example. Each guide pin 24 is formed in a tapered circular shape that decreases in diameter from the proximal end portion having a diameter of about 3 mm toward the distal end portion. A threaded portion 31 is formed near the middle in the longitudinal direction of the first bracket 28 by burring. As shown in FIG. 2, the upper lid 10 is slid relative to the chassis main body 13 along the xy plane, and the screw portion 31 of the upper lid 10 positioned on the chassis main body 13 is screwed into the screw hole 31 c of the heat sink 12. 32 can be screwed. The screw 32 as the fixing means fixes the upper lid 10 positioned on the chassis main body 13 at the final position. That is, the surface of the first bracket 28 is pulled and brought into contact with the back surface of the heat sink 12 by the screw 32.

  A second bracket 29 is formed at the other end of the upper lid body 21 in the x direction. A pair of round holes 27 are formed in the second bracket 29. The pair of round holes 27 are spaced apart from each other in the y direction and are formed to have the same dimensions. Each round hole 27 which is a guide hole is formed as a long hole extending a predetermined small distance in the y direction. By sliding the upper lid 10 relative to the chassis main body 13 along the xy plane, the guide pin 26 of the left plate 14 is inserted while being guided by the round hole 27. At the same time, the guide pin 24 of the upper lid 10 is inserted while being guided by the round hole 12 b of the heat sink 12.

  A third bracket 30 is formed at the other end of the upper lid body 21 in the y direction. With the upper lid 10 at least positioned on the chassis body 13 and disposed at the final position, the back surface portion 30a of the third bracket 30 is fitted into the recess 15a (see FIG. 17) of the rear plate 15. Therefore, the surface portion 15b of the rear plate 15 and the surface portion 30b of the third bracket 30 are configured to be flush with each other. In addition, with the top lid 10 fixed to the final position, a screw (not shown) can be screwed into a screw portion formed in advance on the rear plate 15 from a hole portion formed in the third bracket 30 as necessary. Has been. The threaded portion is realized, for example, by burring. In this way, the upper lid 10 can be easily fixed to the chassis main body 13 by fixing the screws with the upper lid 10 positioned at the final position of the chassis main body 13.

  According to the chassis fitting structure described above, the upper lid 10 is moved relative to the chassis main body 13 while the y-direction end 21a of the upper lid main body 21 of the upper lid 10 is regulated at the reference position P1 of the chassis main body 13. Slide to position. Therefore, the upper lid 10 can be stably and reliably fixed to the chassis main body 13 without being affected by the finished dimensions of the chassis main body 13 and the upper lid 10. Compared to the conventional structure, it is not necessary to increase the dimensional accuracy of the chassis main body 13 and the like, and the manufacturing cost can be reduced. Since the number of parts such as screws can be reduced as compared with the conventional structure, the manufacturing cost of the entire apparatus can be reduced correspondingly, and the number of assembly steps can be reduced. The front surface portion of the first bracket 28 of the upper lid 10 positioned on the chassis main body 13 can be pulled and brought into contact with the back surface portion of the heat sink 12 by screws 32 as fixing means, that is, fixed to the final position.

  According to the fitting structure of the chassis, when the claw fitting portion 20 is attached to the fitting portion 19, the y-direction one end portion 21 a of the upper lid main body 21 is regulated at the reference position P <b> 1 of the chassis main body 13, and the chassis main body 13. Since the upper lid 10 is positioned, the assembly of the upper lid 10 itself can be simplified and the tact time can be shortened. When the fitting claw portion 20 is mounted on the fitting portion 19, the protruding portion 19 a that is pressed by the fitting claw portion 20 is attached to the fitting portion 19, so that the touch when the upper lid 10 is positioned on the chassis main body 13 is sensed. (So-called click feeling) can be obtained. When the fitting claw portion 20 is attached to the fitting portion 19, the protruding portion 19 a is pressed by the fitting claw portion 20, so that an error in dimensional accuracy of each part of the chassis main body 13 can be absorbed. Therefore, it is not necessary to increase the dimensional accuracy of each component of the chassis main body 13. Therefore, the number of processing steps can be reduced, and the manufacturing cost can be reduced.

  Since the relative position of the fitting claw portion 20 can be visually confirmed with respect to the protruding portion 19a, the fitting state of the chassis can be easily determined. The plurality of fitting portions 19 and the plurality of fitting claw portions 20 improve the positioning accuracy of the chassis with respect to the chassis main body 13. The positioning accuracy of the upper lid 10 with respect to the chassis body 13 can be further improved by the pair of guide pins 24 and the pair of round holes 12b. Each guide pin 24 provided on the upper lid 10 is formed in a tapered circular shape so that its diameter decreases from the base end portion toward the tip end portion, and therefore when the fitting claw portion 20 is attached to the fitting portion 19. It is possible to absorb a slight amount of misalignment at the tapered circular taper portion. Therefore, the fitting of the chassis itself can be simplified.

  In the present embodiment, a heat sink made of aluminum die casting is applied, but it is not necessarily limited to the aluminum die casting. For example, even when a heat sink made of a steel plate is applied, the same effects as those of the present embodiment can be obtained. The steel plate of the chassis main body may be subjected to a surface treatment other than the electrogalvanizing treatment. In the present embodiment, the pair of fitting claws are configured to be detachable from the pair of fitting parts, respectively, but the three fitting claws arranged at appropriate intervals in the x direction are respectively corresponding fittings. You may be comprised so that attachment or detachment is possible. For example, among the three fitting claws, the fitting claw provided in the middle in the x direction is arranged at a position slightly displaced in the y direction on the xz plane with respect to the other fitting claws on both sides. Thereby, a fitting nail | claw part can be tightly fitted to a fitting part.

  A guide pin may be provided in the heat sink, and a guide hole that is inserted while being guided by the guide pin may be formed in the upper lid. Also in this case, the same effects as the present embodiment are obtained. In the present embodiment, the protruding portion of the fitting portion is formed in a tapered circular shape, but is not limited to this tapered circular shape. For example, it may be formed in any one of a cylindrical shape, a pyramid shape, and a truncated pyramid shape. Thus, by changing the shape of the protruding portion, the fitting accuracy or the fitting position can be easily changed. Other effects similar to those of the present embodiment are obtained.

  The protruding portion attached to the fitting portion may be formed in a tapered shape that increases the pressing force from the fitting claw portion when the fitting claw portion is attached to the fitting portion. The fitting claw is formed in a tapered shape that gradually protrudes in one direction in the y direction (that is, the near side) as it is separated from the opening in the x direction. As a result, the upper lid can be easily assembled to the chassis body, and the upper lid can be tightly positioned on the chassis body.

  In the present embodiment, the first bracket is pulled and brought into contact with the heat sink by a screw, but is not necessarily limited to this mode. Instead of the above-described embodiment, for example, the surface portion of the first bracket may be brought into contact with the back surface portion of the heat sink by pressing the surface portion of the second bracket with a tip portion such as a screw. According to this configuration, the degree of freedom in layout is improved, and thus the versatility of the finished product can be improved. In the present embodiment, the fitting portion is provided with a “dowel” that is pressed against the protruding portion, that is, the fitting claw portion, but is not limited to such a dowel and can be replaced with the following configuration. is there. A protruding portion that protrudes to the other side (back side) in the y direction is formed on the back surface portion of the fitting claw portion of the upper lid, and when the fitting claw portion is attached to the fitting portion, the fitting portion is You may make it the structure to press. According to such a structure, it becomes possible to reduce the process for forming a protrusion part, and it becomes possible to aim at reduction of die cost. In addition, the present invention can be implemented in various forms without departing from the spirit of the present invention.

FIG. 1A is a view in the middle of assembly of a chassis according to an embodiment of the present invention, FIG. 1A is a perspective view showing a relationship between an upper lid 10 and a front plate 11 and the like, and FIG. It is an expansion perspective view. FIG. 2A is a perspective view showing the relationship between the upper lid 10 and the heat sink 12 and the like, and FIG. 2B is an enlarged perspective view of the fitting shape of the main part. It is the perspective view which looked at the front board 11 from the front side. It is the perspective view which looked at the front board 11 from the back side. 2 is a plan view of a front plate 11. FIG. 2 is a front view of a front plate 11. FIG. 2 is a side view of a front plate 11. FIG. It is a figure which shows the thickness shape of the principal part of the fitting part 19 in detail. It is a front view which expands and shows the fitting part 19 partially. It is a front view which expands and shows the projection part 19a of the fitting part 19. FIG. It is sectional drawing of the protrusion part 19a. It is the perspective view which looked at the heat sink 12 from the back side. It is the perspective view which looked at the heat sink 12 from the front side. It is the perspective view which looked at the left board 14 from the back side. It is the perspective view which looked at the left board 14 from the front side. It is the perspective view which looked at the backplate 15 from the back side. It is the perspective view which looked at the backplate 15 from the front side. It is the perspective view which looked at the upper cover 10 from the front side. It is the perspective view which looked at the upper cover 10 from the back side. 3 is a plan view of the upper lid 10. FIG.

2 is a front view of an upper lid 10. FIG. 3 is a rear view of the upper lid 10. FIG. 3 is a side view of one side of the upper lid 10. FIG. 3 is a side view of the other side of the upper lid 10. FIG. It is a figure which shows the principal part (guide pin) of FIG. 24, Fig.25 (a) is a figure which expands and shows a guide pin, FIG.25 (b) is sectional drawing of a guide pin. FIG. 5 is a perspective view schematically showing a fitting structure of an upper lid 2 with respect to a heat radiating plate 1 according to a conventional fitting structure of a chassis. It is the perspective view which looked at the conventional upper lid 2 from the front side. It is the perspective view which looked at the conventional upper cover 2 from the back side. It is a perspective view of the heat sink 1 which comprises the conventional bottom plate.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Upper cover 12b Guide hole 13 Chassis main body 19 Fitting part 19a Protrusion part 20 Fitting claw part 24 Guide pin 32 Screw P1 Reference position

Claims (6)

In the structure that fits and fixes the chassis to the chassis body,
Provided on the chassis body, and a fitting portion that having a proximal end and a distal end,
Wherein it is attached to the chassis, with respect to the fitting portion, by sliding toward the base end side from the front end portion, and a fitting claw portion wherein Ru is configured to be mounted in the fitting portion,
The base end portion of the fitting portion is provided with a protruding portion pressed against the fitting claw portion in a state where the fitting claw portion is mounted on the fitting portion,
The distal end portion of the fitting portion is formed to be inclined with respect to the base end portion of the fitting portion in a direction opposite to the direction in which the protruding portion protrudes,
The protruding portion has a tapered shape that increases the pressing force of the fitting claw portion to the chassis, and the chassis is slid in a state where the fitting claw portion is attached to the protruding portion of the chassis body. The chassis fitting structure characterized by being fitted by the above.   The chassis fitting structure according to claim 1, further comprising fixing means for fixing the chassis fitted to the chassis main body.   3. The chassis fitting structure according to claim 2, wherein the fixing means includes a screw for abutting the chassis against the chassis main body.   The chassis fitting structure according to any one of claims 1 to 3, wherein a relative position of the fitting claw portion is configured to be visually confirmed with respect to the protruding portion. A plurality of fitting portions;
The chassis fitting structure according to claim 1, further comprising a plurality of fitting claws configured to be detachably attached to the plurality of fitting parts.   4. The chassis fitting structure according to claim 2, wherein the fixing means is configured in a mode in which the chassis is pulled and brought into contact with the chassis body, or a mode in which the chassis is pressed and brought into contact with the chassis body. 5. .

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