JP2015166598A - Fixing structure and fixing method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To securely and simply fix two members.SOLUTION: A first member 5 is equipped with a body portion 11; and a pair of claw portions 12 formed so as to extend from the same direction from the body portion 11, arranged at an interval, sandwiching a second member 6 from side parts, and sandwiching the second member 6 between the body portion 11 and the claw portions 12. At least one claw portion 12 can elastically warp to the body portion 11. Either one of a first claw portion 12A of the pair of the claw portions 12 or the body portion 11 is equipped with a locking portion 51 which locks and fixes the first claw portion 12A and the body portion 11 by bringing the first claw portion 12A and the body portion 11 close to each other in an aligning direction of the pair of the claw portions 12.

Description

  The present invention relates to a fixing structure and a fixing method for fixing two members.

Conventionally, as a structure for fixing two members, for example, as in Patent Document 1, it is formed to extend in the same direction from the main body of the holder (first member), and is formed at an interval from each other. There is a structure including a pair of locking claws (claw portions) that bend and deform. In such a structure, the instrument main body (second member) can be sandwiched and fixed between the pair of locking claws using the elastic force accompanying the bending deformation of the pair of locking claws.
Moreover, the hook part which protrudes toward the mutual latching claw is formed in the front-end | tip of each latching claw, and an instrument main body can be pinched | interposed and fixed between a collar part and a main-body part.

Japanese Utility Model Publication 2-75573

However, in the fixing structure as in Patent Document 1, when the second member is fixed to the first member, the second member is passed between the pair of claw portions (the collar portions). The amount of bending deformation of the claw portion after the second member is fixed to the first member will be larger. For this reason, for example, if the elastic modulus of the claw portion is set low in order to facilitate the passage of the second member between the pair of claw portions, the elastic force of the claw portion becomes weak and the second member is firmly attached to the first member. There is a problem that it cannot be fixed.
On the other hand, if the elastic modulus of the claw portion is set high so that the second member is firmly fixed to the first member, it is difficult to pass the second member between the pair of claw portions, and the second member is used as the first member. It becomes difficult to install.

  The present invention has been made in view of the above-described circumstances, and an object thereof is to provide a fixing structure and a fixing method that can firmly fix two members and can be easily fixed.

  In order to solve this problem, the fixing structure of the present invention is a fixing structure that fixes a first member and a second member having higher rigidity than the first member, and the first member includes a main body portion. And a pair of claws that extend in the same direction from the main body and are spaced apart from each other, sandwich the second member from the side, and sandwich the second member between the main body And at least one claw portion is elastically bent and deformable with respect to the main body portion, and one of the first claw portion and the main body portion of the pair of claw portions is the first claw portion. And a locking portion that locks the first claw portion and the main body portion with each other by bringing the portion and the main body portion closer to each other in the arrangement direction of the pair of claw portions.

  Further, the fixing method of the present invention is a fixing method for fixing the second member to the first member in the fixing structure, wherein the second member is adjacent to the second claw portion in the arrangement direction. After arranging the second member on the main body, the first claw portion is brought close to the main body from the arrangement direction, and is locked and fixed to the main body by the locking portion. To do.

In the fixing structure and the fixing method of the present invention, after the second member is arranged on the main body so that the second member is adjacent to the arrangement direction of the second claw and the pair of claw, the first claw is By locking and fixing the portion to the main body portion from the arrangement direction, at least one claw portion is bent and deformed. As a result, the second member is sandwiched between the pair of claws by the elastic force of one of the claws due to the bending deformation described above, and the second member is sandwiched between the pair of claws and the main body. It can be fixed to one member. If the second member is fixed to the first member in this way, the amount of bending deformation of one of the claw portions is determined when the second member is fixed (when the second member is fixed) and when the second member is fixed to the first member. It does not change with the state after fixing. That is, since the amount of deformation of the one claw when the second member is fixed can be set smaller than before, the elastic modulus of one claw can be set higher than before. Therefore, the second member can be firmly fixed to the first member, and the second member can be prevented from being detached from the first member.
Further, according to the present invention, it is not necessary to bend and deform one claw part more than necessary when the second member is fixed. Therefore, even if the elastic modulus of one claw part is set high, The member can be easily attached to the first member. Therefore, it is possible to improve the manufacturing efficiency of the product including the fixing structure of the present invention and reduce the manufacturing cost.

It is a disassembled perspective view of the electronic device containing the fixing structure which concerns on one Embodiment of this invention. It is a plane sectional view of the electronic device shown in FIG. FIG. 2 is a front sectional view of the electronic device shown in FIG. 1. In the electronic device shown in FIGS. 1-3, it is an enlarged view which shows the nail | claw part and urging | biasing part of a case main body. In the electronic device shown in FIGS. 1-3, it is a plane sectional view which shows the state before fixing a 1st nail | claw part to a base board part. In the electronic device shown in FIGS. 1-3, the component of the movement control part which controls the relative movement of a 1st nail | claw part and a base board part is shown, (a) is a schematic perspective view which shows a control convex part, ( b) is a schematic perspective view showing a regulating recess. In the electronic device shown in FIGS. 1-3, it is a schematic perspective view which shows the connection structure of a 2nd nail | claw part and a base board part.

Hereinafter, an embodiment of the present invention will be described with reference to FIGS.
As shown in FIGS. 1 to 3, the electronic device 1 according to this embodiment includes a housing case 2 and a heat generating portion 3. The heat generating unit 3 includes a substrate 7, an electronic component 8, and a pin terminal 9.
The substrate 7 is formed with a plurality of positioning holes 10C penetrating in the thickness direction. The positioning hole 10C serves to position the substrate 7 with respect to the case body 5 of the housing case 2 described later. The substrate 7 of the present embodiment is formed in a plate shape that is rectangular in plan view. One positioning hole 10 </ b> C is formed in each of two corners of the substrate 7 facing each other.
A plurality of electronic components 8 and pin terminals 9 are provided on the first main surface 10 a of the substrate 7. The electronic component 8 and the pin terminal 9 are appropriately electrically connected to a wiring pattern (not shown) formed on the substrate 7 and constitute a circuit (electronic circuit) of the electronic device 1 together with the substrate 7.

Each pin terminal 9 is an external connection terminal that electrically connects the circuit of the electronic device 1 to the outside. Each pin terminal 9 protrudes from the first main surface 10 a of the substrate 7. Moreover, each pin terminal 9 is bent in the middle part in the longitudinal direction. Thereby, the front-end | tip part of the protrusion direction of each pin terminal 9 is extended along the 1st main surface 10a of the board | substrate 7, and protrudes outside from the periphery of the 1st main surface 10a of the board | substrate 7. FIG. The plurality of pin terminals 9 are arranged at intervals in the Y-axis direction along one long side of the substrate 7, and project from one long side of the substrate 7. Moreover, the front-end | tip part of the some pin terminal 9 which protrudes from the board | substrate 7 is mutually parallel.
In the heat generating portion 3 configured as described above, heat is generated mainly in the electronic component 8 and the wiring pattern of the substrate 7 by energization. The electronic apparatus 1 according to the present embodiment includes two heat generating units 3 described above.

  The housing case 2 is configured to house the heat generating portion 3 therein. The housing case 2 of the present embodiment has two housing spaces S for the heat generating units 3 described above, and can store the heat generating units 3 one by one in each housing space S. The housing case 2 includes a case main body (first member) 5 and a heat sink (second member) 6. The fixing structure in the present embodiment is a structure for fixing the case body 5 and the heat sink 6.

The case main body 5 includes a main body portion 11 and a pair of claw portions 12 (12A, 12B). Furthermore, the main body 11 includes a base plate portion 13 and a standing wall portion 14 formed in a plate shape.
The base plate portion 13 of the present embodiment is formed in a plate shape that is rectangular in plan view. A heat sink 6 to be described later is disposed to face main surfaces 13 a and 13 b of the base plate portion 13. In the present embodiment, the two heat sinks 6 are disposed so as to oppose both the main surfaces 13 a and 13 b of the base plate portion 13. The base plate portion 13 is formed with a ventilation hole 21 penetrating in the thickness direction (X-axis direction). The ventilation hole 21 allows the two accommodation spaces S to communicate with each other.

  The standing wall portion 14 constitutes a wall portion of the housing case 2 together with the base plate portion 13 and the heat sink 6 described later. The standing wall portion 14 extends from the peripheral edge (side portion) of the main surfaces 13 a and 13 b of the base plate portion 13 toward a first main surface (arrangement surface) 31 a of the heat sink 6 described later. In the present embodiment, the standing wall portion 14 is provided only on one long side (first long side) of the base plate portion 13. In this embodiment, the standing wall portion 14 extends from the peripheral edge (side portion) of the main surfaces 13 a and 13 b of the base plate portion 13 to both sides in the thickness direction of the base plate portion 13. Thereby, the main-body part 11 of this embodiment is formed in the cross-sectional T-shape (refer especially FIG. 3).

  Moreover, the standing wall part 14 of this embodiment is formed in the plate shape of a planar view rectangle. The standing wall portion 14 has a short side direction corresponding to an extending direction (X-axis direction) of the standing wall portion 14 with respect to the base plate portion 13, and a long side direction is a long side direction (Y-axis) of the base plate portion 13. The base plate portion 13 is provided so as to coincide with the direction). The standing wall portion 14 may be detachably connected to the base plate portion 13 as shown in FIG. 3, but may be formed integrally with the base plate portion 13, for example.

A plurality of protrusions 101 are formed on the main surface 14 a of the standing wall 14 that forms the outer surface of the housing case 2. The height dimension of the protrusion 101 is set to be smaller than the protruding length of the pin terminal 9 that protrudes from the main surface 14 a of the standing wall 14 to the outside of the housing case 2. The plurality of protrusions 101 are arranged at intervals from each other so that the electronic device 1 can be placed on a flat surface (for example, a mounting surface described later) in a stable state. The plurality of protrusions 101 are arranged in regions near the respective corners of the main surface 14a of the standing wall portion 14 that is rectangular in plan view, for example.
When the electronic device 1 is mounted on the mounting substrate (for example, through-hole mounting) in a state where the main surface 14a of the standing wall portion 14 faces the mounting surface (not shown) of the mounting substrate, the plurality of protrusions 101 are By abutting on the mounting surface of the mounting substrate, it serves as a spacer for arranging the housing case 2 on the mounting surface of the mounting substrate with an interval. The protrusion 101 shown in FIG. 3 is formed in a hemispherical shape, but may be formed in an arbitrary shape.

  The standing wall portion 14 is formed with a plurality of insertion holes 22 through which the plurality of pin terminals 9 provided in the heat generating portion 3 are individually inserted. Each insertion hole 22 is formed so as to penetrate in the thickness direction (Z-axis direction) of the standing wall portion 14. Further, each insertion hole 22 is formed in a slit shape that opens at the distal end in the extending direction of the standing wall 14 and extends from the distal end in the extending direction of the standing wall 14 toward the base end. The plurality of insertion holes 22 are arranged along the long side of the base plate portion 13.

The pair of claw portions 12 are formed to extend from the base plate portion 13 of the main body portion 11 in the same direction, and are spaced apart from each other. A pair of nail | claw part 12 plays the role which pinches | interposes the heat sink 6 mentioned later from the side. Further, the pair of claws 12 serve to sandwich the heat sink 6 between the main body 11.
In the present embodiment, each claw portion 12 extends in the thickness direction of the base plate portion 13 from the peripheral edge (side portion) of the main surfaces 13 a and 13 b of the base plate portion 13. Further, each claw portion 12 is elastically bent and deformable with respect to the base plate portion 13. Thus, the pair of claws 12 can sandwich the heat sink 6 from the side. Furthermore, each nail | claw part 12 of this embodiment is formed in the plate shape of the planar view rectangle, and comprises the wall part of the storage case 2 with the heat sink 6 mentioned later. Each nail | claw part 12 formed in the planar view rectangular shape is provided in the base board part 13 so that the pair of edge | side may be parallel to the short side of the base board part 13. FIG.

In the present embodiment, each claw portion 12 extends on both sides in the thickness direction of the base plate portion 13. Thereby, in this embodiment, the heat sink 6 can be inserted | pinched one by one on both the main surfaces 13a and 13b of the base board part 13 with a pair of nail | claw part 12. FIG.
Furthermore, each nail | claw part 12 of this embodiment is provided so that the space | interval of a pair of nail | claw part 12 may become small as it goes to the extension direction front-end | tip of the nail | claw part 12. FIG. In the example of illustration (especially FIG. 2), each claw part 12 inclines so that it may go inside each main surface 13a, 13b of the base board part 13 as it goes to the extension direction front end, It may be curved. That is, each claw portion 12 extending on both sides in the thickness direction of the base plate portion 13 may be bent at a connection portion with the base plate portion 13 as shown in the drawing, or is formed to be curved in an arc shape, for example. Also good.

  Each nail | claw part 12 is equipped with the collar part 23 which protrudes toward the other nail | claw part 12 in the extension direction front-end | tip. The flange 23 presses the heat sink 6 toward the base plate 13 of the main body 11 using the elastic force of the claw 12 and sandwiches the heat sink 6 with the base plate 13 of the main body 11. Fulfill. In the present embodiment, a plurality (two in the illustrated example) of the flange portions 23 are arranged at intervals in the short side direction (Z-axis direction) of the base plate portion 13. Moreover, in this embodiment, since each nail | claw part 12 is extended in the thickness direction both sides of the base board part 13, the collar part 23 is provided in both front-end | tips of each nail | claw part 12. As shown in FIG.

  As shown in FIGS. 2 and 4, the flange portion 23 is formed with an inclined inner surface 23 a. The inclined inner surface 23a is a flat surface that is inclined so as to be directed in the protruding direction of the flange portion 23 toward the distal end side in the extending direction of the claw portion 12. The inclined inner surface 23 a is disposed so as to face the main surfaces 13 a and 13 b of the base plate portion 13. The inclined inner surface 23a is a corner portion 31D of the heat sink 6 (second main surface (opposing surface) 31b of the heat sink 6 facing the flange portion 23) in a state where the heat sink 6 is sandwiched between the flange portion 23 and the base plate portion 13. And a corner portion 31D of the side surface 31c of the heat sink 6 adjacent to the second main surface 31b).

In addition, an auxiliary contact surface 23 b is formed on the flange portion 23. The auxiliary contact surface 23b is formed at a position adjacent to the above-described inclined inner surface 23a on the front end side in the protruding direction of the flange 23. The auxiliary contact surface 23 b is a flat surface that faces the second main surface 31 b of the heat sink 6 in a state where the heat sink 6 is sandwiched between the flange portion 23 and the base plate portion 13.
As shown in FIGS. 1 and 2, each claw portion 12 is formed with a plurality of vent holes 24 penetrating in the thickness direction. The vent hole 24 plays a role of releasing the heat of the heat generating portion 3 disposed inside the housing case 2 to the outside of the housing case 2.

  Furthermore, in this embodiment, as shown in FIG. 2, each nail | claw part 12 (12A, 12B) is connected with respect to the base board part 13 of the main-body part 11 by the connection part 50 (50A, 50B). In the present embodiment, the structure of the connecting portion 50 is different between the two claw portions 12A and 12B. Hereinafter, the structure of the two connecting portions 50A and 50B will be described.

As shown in FIGS. 2 and 5, the first connecting part 50 </ b> A that connects the first claw part 12 </ b> A and the base plate part 13 includes a locking part 51 provided on the first claw part 12 </ b> A. The locking portion 51 locks the first claw portion 12A and the base plate portion 13 to each other by bringing the first claw portion 12A and the base plate portion 13 closer to each other in the arrangement direction (Y-axis direction) of the pair of claw portions 12. And fix it.
The locking portion 51 of the present embodiment is provided at the base end portion of the first claw portion 12A facing the side surface of the base plate portion 13, and a pair of locking claw portions 52 that sandwich the base plate portion 13 from its thickness direction. Is provided. Each latching claw portion 52 extends in the X-axis direction toward the second claw portion 12B. The pair of locking claws 52 are arranged at intervals in the thickness direction of the base plate portion 13. And each latching claw part 52 can be elastically bent and deformed in the thickness direction of the base plate part 13 with respect to the first claw part 12A. A hook-like portion 53 that protrudes toward the opposing locking claw portion 52 is formed at the tip of each locking claw portion 52. In FIG. 1, a pair of locking claw portions 52 are arranged in two pairs at intervals in the short side direction (Z-axis direction) of the base plate portion 13, but for example, one set may be used, or three sets or more. There may be.

  As shown in FIGS. 2 and 5, the first connecting portion 50 </ b> A includes a locked portion 55 that is provided on the base plate portion 13 and locks the pair of locking claws 52 described above. The locked portion 55 of the present embodiment is formed to be recessed from the main surfaces 13a and 13b of the base plate portion 13, and a pair of locking recesses 56 that accommodate the flange portions 53 of the locking claws 52 described above. It is. The first claw portion 12A and the base plate portion are accommodated by accommodating the hook-like portions 53 of the pair of locking claw portions 52 in the pair of locking recess portions 56 formed on both the main surfaces 13a and 13b of the base plate portion 13, respectively. 13 can be locked and fixed to each other. In FIG. 1, the locking recess 56 is formed in a groove shape extending in the short side direction (Z-axis direction) of the base plate portion 13, but is not limited thereto.

As shown in FIGS. 2 and 5, the base plate portion 13 of the present embodiment has a base plate portion 13 that faces the first claw portion 12A from the side of the locking recess 56 formed in each of the main surfaces 13a and 13b. An inclined guide surface 57 is formed to be inclined so that the thickness of the base plate portion 13 is reduced toward the side surface. Here, the thickness dimension of the base plate portion 13 on the side surface of the base plate portion 13 facing the first claw portion 12A is, for example, between the hook-shaped portions 53 of the pair of locking claw portions 52 by the inclined guide surface 57, for example. It is set below the gap size.
Accordingly, when the first claw portion 12A and the base plate portion 13 are brought close to each other in the arrangement direction of the pair of claw portions 12, and the side portion of the base plate portion 13 is inserted between the pair of locking claw portions 52, a pair of Since the hook-shaped portions 53 of the locking claws are separated from each other by the inclined guide surface 57, each of the pair of locking claw portions 52 is elastically bent and deformed. Thereby, the hook-shaped part 53 of each latching claw part 52 can be easily guided to the latching recessed part 56 of the base plate part 13.

Further, as shown in FIGS. 2, 5, and 6, in the housing case 2 of the present embodiment, the first claw portion 12 </ b> A and the base plate portion 13 are locked and fixed to each other by the locking portion 51 described above. Thus, a movement restricting portion 60 for restricting relative movement of the first claw portion 12A and the base plate portion 13 in the direction orthogonal to the arrangement direction of the pair of claw portions 12 is provided.
The movement restricting portion 60 of the present embodiment includes a restricting convex portion 61 that protrudes from the side surface of the base plate portion 13 toward the first claw portion 12A, and a surface that faces the side surface of the base plate portion 13 in the first claw portion 12A. And a regulation recess 62 into which the regulation projection 61 is inserted.

The restriction convex portion 61 is formed to extend in the short side direction (Z-axis direction) of the base plate portion 13. The width dimension of the restricting convex portion 61 corresponding to the thickness direction (X-axis direction) of the base plate portion 13 is wide at the center portion in the longitudinal direction of the restricting convex portion 61 and narrow at both longitudinal ends of the restricting convex portion 61. Is set. There is a step between the central portion and both end portions of the restricting convex portion 61.
The restriction recess 62 is formed between the pair of locking claws 52 described above. Further, the shape and size of the restriction recess 62 are set so as to correspond to the restriction protrusion 61 described above.
Thereby, in a state where the restricting convex portion 61 is inserted into the restricting concave portion 62, the first claw portion 12A is restricted from moving in the thickness direction (X-axis direction) with respect to the base plate portion 13. Further, in this inserted state, the stepped portion of the restricting convex portion 61 is caught by the stepped portion of the restricting recessed portion 62, so that the first claw portion 12 </ b> A is in the short side direction (Z-axis) (Direction) is also restricted.

As shown in FIGS. 2 and 7, the second connecting portion 50 </ b> B that connects the second claw portion 12 </ b> B and the base plate portion 13 is formed in the key groove portion 58 formed in the second claw portion 12 </ b> B and the base plate portion 13. And a hook-shaped protrusion 59.
The key groove portion 58 is formed at the base end portion in the extending direction of the second claw portion 12B facing the side surface of the base plate portion 13. The key groove portion 58 extends in the short side direction (Z-axis direction) of the base plate portion 13.

In the cross section orthogonal to the longitudinal direction of the key groove 58, the width of the key groove 58 at the bottom of the key groove 58 is set larger than the width of the key groove 58 at the opening of the key groove 58. In the present embodiment, the cross section of the key groove portion 58 orthogonal to the longitudinal direction is formed so that the width dimension of the key groove portion 58 increases from the opening of the key groove portion 58 toward the bottom. In the illustrated example, the cross section of the key groove portion 58 is formed in a trapezoidal shape, but is not limited thereto.
The first end in the longitudinal direction of the key groove portion 58 is open to the side surface of the second claw portion 12B. On the other hand, the second end in the longitudinal direction of the key groove portion 58 may be opened on the side surface of the second claw portion 12B, for example, similarly to the first end, but may not be opened, for example.

The hook-shaped protrusion 59 protrudes from the side surface of the base plate portion 13 that faces the extending direction base end portion of the second claw portion 12B. The hook-shaped protrusion 59 is formed so as to extend in the short side direction (Z-axis direction) of the base plate portion 13.
The cross section of the hook-shaped protrusion 59 that is orthogonal to the longitudinal direction of the hook-shaped protrusion 59 is formed in a shape corresponding to the cross section of the key groove 58 described above. That is, in the cross section of the hook-shaped protrusion 59 perpendicular to the longitudinal direction, the width dimension at the base end in the protruding direction of the hook-shaped protrusion 59 is set smaller than the width dimension at the tip of the hook-shaped protrusion 59. Yes. In the present embodiment, the cross-section of the hook-shaped protrusion 59 that is orthogonal to the longitudinal direction is such that the width dimension of the hook-shaped protrusion 59 increases from the base end in the protruding direction of the hook-shaped protrusion 59 toward the tip. Is formed. In the illustrated example, the cross-section of the hook-shaped protrusion 59 is formed in a trapezoidal shape, but is not limited thereto.

The dimension in the longitudinal direction of the hook-shaped protrusion 59 may be set to be equal to the short side of the base plate part 13, but may be shorter than the short side of the base plate part 13, for example.
The hook-shaped protrusion 59 formed as described above is inserted into and engaged with the key groove 58. The hook-shaped protrusion 59 can be inserted into the key groove 58 from an opening at an end (for example, the first end) in the longitudinal direction of the key groove 58. In a state where the hook-like protrusion 59 is engaged with the key groove 58, the hook-like protrusion 59 does not come out of the key groove 58 in the protruding direction of the hook-like protrusion 59. As a result, the second claw portion 12 </ b> B is coupled to the base plate portion 13.

As shown in FIGS. 1 and 3, in this embodiment, rail portions 25 and 26 extending in the arrangement direction of the pair of claw portions 12 are formed in the main body portion 11 of the case main body 5.
In the present embodiment, the rail portions 25 and 26 are formed to extend in the long side direction (Y-axis direction) of the base plate portion 13. The rail portions 25 and 26 are respectively formed at both ends of the base plate portion 13 in the short side direction (Z-axis direction) of the main body portion 11. If it demonstrates concretely, the 1st rail part 25 is formed in the front-end | tip of each extending direction of the standing wall part 14 provided in one long side (1st long side) of the base board part 13. As shown in FIG. . In the present embodiment, since the plurality of insertion holes 22 are opened at the respective ends in the extending direction of the standing wall portion 14, the first rail portion 25 is formed by being divided into a plurality of portions in the extending direction. . The second rail portion 26 extends along the second long side in the vicinity of the other long side (second long side) of the base plate portion 13 among the main surfaces 13 a and 13 b of the base plate portion 13. .

As shown in FIGS. 1, 2, and 4, the main body 11 of the case main body 5 includes a biasing portion 27. The urging portion 27 is formed to bend and extend in a substantially C shape from each of the main surfaces 13a and 13b of the base plate portion 13, and can be elastically deformed. The urging portion 27 is elastically deformed so that the degree of curvature changes when an external force in a direction approaching the main surfaces 13a and 13b of the base plate portion 13 is applied to the extending direction tip. Along with this elastic deformation, an elastic force is generated in the urging portion 27 in a direction away from the main surfaces 13 a and 13 b of the base plate portion 13.
A plurality of urging portions 27 are arranged on the peripheral edges of the main surfaces 13a and 13b of the base plate portion 13 at intervals in the circumferential direction of the main surfaces 13a and 13b. In this embodiment, the urging | biasing part 27 is distribute | arranged 1 each in the intermediate part of each edge | side of each main surface 13a, 13b of the base board part 13 made into the planar view rectangle.

The above-described urging portion 27 urges the heat sink 6 in a direction opposite to the pressing direction of the heat sink 6 by the flange portion 23 and plays a role of sandwiching the heat sink 6 between the flange portion 23 of the claw portion 12.
Further, the urging portion 27 of the present embodiment plays a role of pressing the substrate 7 against the first main surface 31 a of the heat sink 6 that faces the main surfaces 13 a and 13 b of the base plate portion 13. For this reason, a pressing surface 27 a that is in surface contact with the first main surface 10 a of the substrate 7 facing the same direction as the first main surface 31 a of the heat sink 6 is formed at the leading end of each urging portion 27 in the extending direction. . Further, a position adjustment protrusion 28 is formed to protrude from the pressing surface 27 a of each urging portion 27. The position adjustment protrusion 28 is disposed to face the side portion of the substrate 7 in a state where the substrate 7 is disposed on the pressing surface 27a. In the present embodiment, since the position adjustment protrusions 28 of the plurality of urging portions 27 surround the substrate 7 in a state where the substrate 7 is disposed on the pressing surface 27 a, the plurality of position adjustment protrusions 28 are formed on the substrate 7 with respect to the case body 5. It plays a role of adjusting the position.

As shown in FIGS. 1 to 3, positioning projections 29 are formed to project from the main surfaces 13 a and 13 b of the base plate portion 13 of the case body 5. The positioning protrusions 29 are arranged at two corners facing each other among the main surfaces 13a and 13b of the base plate portion 13 formed in a rectangular shape. Each positioning projection 29 serves to position the substrate 7 with respect to the case body 5 by being inserted into each positioning hole 10 </ b> C of the substrate 7.
The case body 5 configured as described above is formed of a resin material.

The heat sink 6 is made of a material having higher rigidity and higher thermal conductivity than the case body 5 such as aluminum. In the electronic device 1 of the present embodiment, one heat sink 6 is disposed on each side of the base plate portion 13 in the thickness direction. Each heat sink 6 includes a plate-like heat sink body 31 and a heat sink wall 32.
The heat sink body 31 is disposed to face the main surfaces 13 a and 13 b of the base plate portion 13 in a state where the heat sink 6 is fixed to the case body 5. The first main surface 31 a of the heat sink body 31 facing the base plate portion 13 is an arrangement surface on which the heat generating portion 3 is arranged. In the present embodiment, the heat generating portion 3 is arranged on the first main surface 31 a of the heat sink 6 so that the second main surface 10 b of the substrate 7 faces the first main surface 31 a of the heat sink 6. In addition, the heat sink body 31 is formed with a plurality of fins 33 protruding from the second main surface 31b.
Furthermore, the heat sink body 31 of the present embodiment is formed in a plate shape having a rectangular shape in plan view following the shapes of the base plate portion 13 and the substrate 7. Each fin 33 extends in the long side direction (Y-axis direction) of the heat sink body 31. The plurality of fins 33 are arranged at intervals so as to be parallel to each other in the short side direction (Z-axis direction) of the heat sink body 31.

  The heat sink wall portion 32 protrudes from the first main surface 31 a of the heat sink body 31 toward the main surfaces 13 a and 13 b of the base plate portion 13, and forms a wall portion of the housing case 2. The heat sink wall 32 of the present embodiment is provided only on one long side (first long side) of the heat sink body 31. The heat sink wall 32 is formed in a rectangular plate shape in plan view, and the length of the long side thereof coincides with the length of the long side of the heat sink body 31. Thereby, the heat sink 6 of this embodiment is formed in the L-shaped cross section.

The heat sink 6 is formed with grooves 34 and 35 extending in the arrangement direction of the pair of claws 12 described above. The groove portions 34 and 35 are engaged with the rail portions 25 and 26 when the rail portions 25 and 26 formed in the main body portion 11 of the case main body 5 are inserted while the heat sink 6 is fixed to the case main body 5. Is.
In the present embodiment, the grooves 34 and 35 are formed to extend in the long side direction of the heat sink body 31. Two grooves 34 and 35 are formed in the heat sink 6. More specifically, the first groove 34 is formed at the front end in the protruding direction of the heat sink wall 32 provided on one long side (first long side) of the heat sink body 31. The second groove 35 is formed to extend along the second long side in the vicinity of the other long side (second long side) of the first main surface 31 a of the heat sink body 31.

  In the heat sink 6 configured as described above, the second groove portion 35 of the heat sink body 31 is further erected so that the first main surface 31 a of the heat sink body 31 faces the main surfaces 13 a and 13 b of the base plate portion 13. The heat sink 6 is positioned between the pair of claws 12 so as to face the first rail portion 25 of the wall portion 14 and so that the first groove portion 34 of the heat sink wall portion 32 faces the second rail portion 26 of the base plate portion 13. And is fixed to the case body 5 by being sandwiched between the flange portion 23 of the claw portion 12 and the base plate portion 13. Further, in this fixed state, the heat sink body 31 is positioned adjacent to the front end of the standing wall portion 14 in the extending direction. Therefore, the size of the heat sink body 31 is such that the heat sink body 31 does not protrude from the main surface 14a of the standing wall 14 as shown in FIG. Is preferably set to be small.

  In this fixed state, the heat generating portion 3 is formed by the main surfaces 13 a and 13 b of the base plate portion 13, the pair of claw portions 12 extending from the main surfaces 13 a and 13 b in the same direction, the standing wall portion 14, and the heat sink 6. A storage space S is defined for storing the. In the present embodiment, since the substrate 7 of the heat generating unit 3 is pressed against the first main surface 31a of the heat sink main body 31 by the urging unit 27, the heat generating unit 3 has the first main surface 31a of the heat sink main body 31 in the accommodation space S. Fixed on top. Further, the rail portions 25 and 26 of the case body 5 are inserted into and engaged with the groove portions 34 and 35 of the heat sink 6. Furthermore, the opening portion of the insertion hole 22 that opens at the front end of the standing wall portion 14 in the extending direction is closed by the heat sink body 31.

  Furthermore, the electronic device 1 of this embodiment includes a heat dissipation sheet 4. The heat radiating sheet 4 is made of a material having a high thermal conductivity and elastically deformable. The heat dissipation sheet 4 is provided between the first main surface 31 a of the heat sink 6 and the substrate 7. The heat dissipation sheet 4 is elastically deformed so as to be crushed in the thickness direction when the substrate 7 is pressed against the heat sink 6 by the urging portion 27. The heat dissipation sheet 4 of the present embodiment is formed in a rectangular shape in plan view following the shape of the first main surface 31 a of the heat sink 6 and the substrate 7.

  The heat dissipation sheet 4 is formed with a plurality of communication holes 41 that communicate with the positioning holes 10 </ b> C of the substrate 7 in a state where the heat dissipation sheet 4 is superimposed on the substrate 7. The communication hole 41 is for inserting the positioning projection 29 of the case body 5 and plays a role of positioning the heat dissipation sheet 4 with respect to the case body 5 together with the substrate 7. In addition, although the communication hole 41 shown in FIG. 1 is opened in the corner | angular part (side part) of the thermal radiation sheet | seat 4, it is not restricted to this shape.

Next, a method for manufacturing the electronic apparatus 1 of the present embodiment (particularly a fixing method for fixing the heat sink 6 to the case body 5) will be described.
When manufacturing the electronic device 1, first, as shown in FIG. 1, the standing wall portion 14 is integrally fixed to the base plate portion 13 to constitute the body portion 11 of the case body 5. Further, the second claw portion 12B is fixed integrally to the base plate portion 13 of the main body portion 11. Next, as shown in FIG. 5, the heat sink 6 is adjacent to the main surface 13 a of the base plate portion 13 such that the heat sink 6 is adjacent to the arrangement direction (Y-axis direction) of the second claw portion 12 </ b> B and the pair of claw portions 12. 13b.

  In the present embodiment, before the heat sink 6 is arranged, the substrate 7 and the heat radiating sheet 4 of the heat generating part 3 are arranged in order on the main surfaces 13 a and 13 b of the base plate part 13. At this time, the positioning protrusions 29 provided on the main surfaces 13a and 13b of the base plate portion 13 are inserted into the positioning holes 10C of the substrate 7 and the communication holes 41 of the heat dissipation sheet 4, so that the substrate 7 and the heat dissipation sheet 4 are connected. It is positioned with respect to the main body 11 (see FIG. 1). In addition, the peripheral portion of the first main surface 10 a of the substrate 7 is disposed on the pressing surfaces 27 a of the plurality of urging portions 27, and the substrate 7 is surrounded by the position adjustment protrusions 28 of the plurality of urging portions 27.

  Further, when the substrate 7 is arranged on each main surface 13a, 13b of the base plate portion 13, the protruding portions of the plurality of pin terminals 9 of the heat generating portion 3 protruding from the side portion of the substrate 7 are standing wall portions. 14 are individually inserted through a plurality of insertion holes 22 formed in the base plate 14 (see FIGS. 1 and 3). Here, since the insertion hole 22 is opened above each main surface 13a, 13b of the base plate part 13, the substrate 7 is simply arranged on each main surface 13a, 13b of the base plate part 13 as described above. Thus, the protruding portion of the pin terminal 9 can be inserted into the insertion hole 22 so as to enter the insertion hole 22 from the opening portion of the insertion hole 22. In this state, the protruding portion of the pin terminal 9 protrudes outside the main body portion 11 through the insertion hole 22.

Next, the heat sink 6 is disposed on the main surfaces 13 a and 13 b of the base plate portion 13. At this time, the groove portions 34 and 35 of the heat sink 6 are further connected to the rail portions of the main body portion 11 so that the first main surface 31 a of the heat sink body 31 faces the main surfaces 13 a and 13 b of the base plate portion 13. The heat sink body 31 is inserted between the flange portion 23 of the second claw portion 12B and the base plate portion 13 so as to face 25 and 26, respectively (see FIGS. 1 and 3). In this state, for example, as shown in FIG. 4, the corner portion 31 </ b> D between the second main surface 31 b and the side surface 31 c of the heat sink body 31 abuts on the inclined inner surface 23 a of the flange portion 23, or the second main surface of the heat sink body 31. 31b contacts the auxiliary contact surface 23b of the flange 23.
In this state, the rail portions 25 and 26 of the main body 11 are inserted into and engaged with the groove portions 34 and 35 of the heat sinks 6 (see FIG. 3).

  Finally, the first claw portion 12A is brought close to the base plate portion 13 from the arrangement direction of the pair of claw portions 12, and is locked and fixed to the base plate portion 13 by the locking portion 51. Thereby, as shown in FIG. 2, the case main body 5 is defined, and the two heat sinks 6 are fixed to the case main body 5. Hereinafter, the fixing of the first claw portion 12A to the base plate portion 13 will be described in detail.

  In this embodiment, by inserting the side part of the base plate part 13 facing the first claw part 12A between the pair of locking claw parts 52 provided in the first claw part 12A, a pair of locking claw parts. The hook-like portions 53 of 52 enter into the locking recesses 56 formed in the main surfaces 13a and 13b of the base plate portion 13, respectively. Accordingly, the first claw portion 12A is locked and fixed to the base plate portion 13. In this state, since the hook-shaped portion 53 of each locking claw portion 52 is caught by the locking recess 56, the first claw portion 12A is not separated from the base plate portion 13 in the arrangement direction of the pair of claw portions 12. Further, in this state, the restricting convex portion 61 of the base plate portion 13 enters the restricting concave portion 62 of the first claw portion 12 </ b> A. Movement in the orthogonal directions (X-axis direction and Z-axis direction) is also restricted.

  Further, when the side portion of the base plate portion 13 facing the first claw portion 12A is inserted between the pair of locking claw portions 52, the hook-shaped portions 53 of the pair of locking claw portions 52 are inclined guide surfaces. Since the pair of locking claws 52 are elastically bent and deformed so as to be separated from each other by 57, the hook-like portions 53 of the respective locking claws 52 are easily guided to the locking recesses 56 of the base plate portion 13. be able to.

  Further, when the first claw portion 12 </ b> A is fixed to the base plate portion 13 as described above, the pair of claw portions 12 are elastically bent and deformed to be positioned on the main surfaces 13 a and 13 b of the base plate portion 13. The space | interval of the extension direction front-end | tips of a pair of nail | claw part 12 to spread is expanded. Further, when the first claw portion 12A is fixed to the base plate portion 13, the inclined inner surface 23a of each flange portion 23 of the pair of claw portions 12 is formed on each heat sink body 31 in the same manner as in the case of the second claw portion 12B. It contacts the corner portion 31D between the second main surface 31b and the side surface 31c (see FIG. 4). As a result, the heat sink body 31 is sandwiched between the pair of claws 12 by the elastic force accompanying the elastic deformation of the pair of claws 12, and pressed toward the main surfaces 13 a and 13 b of the base plate portion 13. .

  In the present embodiment, as the heat sink main body 31 is pressed against the main surfaces 13a and 13b of the base plate portion 13 by the pair of claw portions 12, the urging portions 27 are elastically deformed, and each heat sink main body is deformed. 31 is urged in a direction away from the main surfaces 13 a and 13 b of the base plate portion 13. Therefore, each heat sink body 31 is sandwiched between the flange portion 23 and the urging portion 27 of the case body 5. Thus, the two heat sinks 6 are fixed to the case body 5. In addition, two housing spaces S are defined by the case body 5 and the two heat sinks 6.

In the state where the heat sink 6 is fixed to the case main body 5 as described above, the substrate 7 interposed between the heat sink 6 and the urging portion 27 is moved by the elastic force of the urging portion 27 to the first main surface 31 a of the heat sink 6. Pressed against. Thereby, the heat generating part 3 is fixed on the first main surface 31 a of the heat sink 6 in the accommodation space S. In this state, the first main surface 10 a of the substrate 7 is in surface contact with the pressing surface 27 a of the urging portion 27.
Furthermore, in this state, the heat dissipation sheet 4 interposed between the substrate 7 and the heat sink 6 is elastically deformed so as to be crushed in the thickness direction. Thereby, a gap (space) between the first main surface 31 a of the heat sink 6 and the substrate 7 is filled with the heat radiating sheet 4.

  As described above, according to the fixing method of the electronic apparatus 1 of the present embodiment that employs the fixing structure of the present invention and the case body 5 and the heat sink 6 that employs the fixing method of the present invention, the heat sink 6 is the first. After the heat sink 6 is arranged on the main body 11 so as to be adjacent to the arrangement direction of the two claw parts 12B and the pair of claw parts 12, the first claw part 12A is engaged with the main body part 11 from the arrangement direction of the pair of claw parts 12. By stopping and fixing, the heat sink 6 is sandwiched between the pair of claws 12 by the elastic force of the pair of claws 12, and is sandwiched between the pair of claws 12 and the main body 11. It can be fixed to the main body 5. If the heat sink 6 is fixed to the case body 5 in this way, the amount of bending deformation of each claw portion 12 changes between when the heat sink 6 is fixed (when the heat sink 6 is fixed) and after the heat sink 6 is fixed. do not do. That is, since the amount of bending deformation of each claw portion 12 when the heat sink 6 is fixed can be set smaller than before, the elastic modulus of each claw portion 12 can be set higher than before. Therefore, the heat sink 6 can be firmly fixed to the case body 5, and the heat sink 6 can be prevented from being detached from the case body 5.

In the electronic device 1 of the present embodiment, if it becomes difficult to remove the heat sink 6 from the case body 5, it is possible to prevent a third party from removing the heat sink 6 from the case body, and various components arranged in the housing case 2 (this embodiment) In the embodiment, the confidentiality of the substrate 7 and the electronic component 8) constituting the circuit of the electronic device 1 can be enhanced.
Further, since it is not necessary to bend and deform the claw portions 12 more than necessary when the heat sink 6 is fixed, the heat sink 6 can be easily attached to the case body 5 even if the elastic modulus of each claw portion 12 is set high. Can be attached. Therefore, it is possible to improve the manufacturing efficiency of the electronic device 1 (product) and reduce the manufacturing cost.

  Furthermore, since it is not necessary to bend and deform each claw part more than necessary when the heat sink 6 is fixed, the projection length of the collar part 23 of each claw part 12 (particularly the length of the auxiliary contact surface 23b) is set. It is also possible to set longer than before. Thereby, it can prevent more reliably that the heat sink 6 remove | deviates from the case main body 5. FIG.

Moreover, in this embodiment, since the latching | locking part 51 is provided in the 1st nail | claw part 12A and is comprised by a pair of latching claw part 52 which pinches | interposes the base board part 13 from the thickness direction, a 1st nail | claw The portion 12A can be easily fixed to the base plate portion 13. Further, as compared with the case where the locking portion 51 is provided on the base plate portion 13, the locking claw portion 52 is easily formed thicker, so that the strength of the locking claw portion 52 (locking portion 51) can be easily secured. You can also.
Moreover, when the latching | locking part 51 is provided in 12 A of 1st claw parts, since the latching | locking part of the latching | locking part 51 and the base board part 13 is distribute | arranged inside the storage case 2 (accommodation space S), In a state where the first claw portion 12A is fixed to the base plate portion 13, it is difficult to visually recognize the engaging portion from the outside. Thereby, it is possible to prevent a third party from removing the first claw portion 12 </ b> A from the base plate portion 13, and it is possible to further improve the secrecy of various components arranged in the housing case 2.

  Furthermore, according to the electronic device 1 of the present embodiment, in a state where the first claw portion 12A is fixed to the base plate portion 13, the movement restricting portion 60 causes the first claw portion 12A to extend in a direction orthogonal to the arrangement direction of the pair of claw portions 12. Since the relative movement of the one claw portion 12A and the base plate portion 13 is restricted, it is possible to prevent the relative displacement between the first claw portion 12A and the base plate portion 13 from occurring.

  Furthermore, in this embodiment, before attaching the first claw portion 12A, the substrate 7 and the heat dissipation sheet 4 are sequentially arranged on the main surfaces 13a and 13b of the base plate portion 13, but in this case, the base plate Since the positioning projection 29 of the portion 13 is inserted into the positioning hole 10C of the substrate 7 and the communication hole 41 of the heat radiating sheet 4, the substrate 7 and the heat radiating sheet 4 are positioned with respect to the base plate portion 13. It is possible to prevent the substrate 7 and the heat dissipation sheet 4 from being displaced with respect to the base plate portion 13 until the portion 12A is locked and fixed to the base plate portion 13.

  Furthermore, according to the electronic apparatus 1 of the present embodiment, the two heat sinks 6 are sandwiched between the pair of claws 12 on both the main surfaces 13a and 13b of the base plate portion 13, and thus a pair of heat sinks 6 acting on the heat sinks 6 are applied. The elastic force of the nail | claw part 12 becomes large. Thereby, each heat sink 6 can be more firmly fixed to the case body 5.

  Further, in the electronic device 1 according to the present embodiment, since the distance between the pair of claws 12 decreases toward the distal end in the extending direction of the claws 12, the claws that sandwich the heat sink 6 between the pair of claws 12. The elastic force of the part 12 can be improved.

  Furthermore, in the electronic device 1 of this embodiment, since the claw portion 12 is connected to the base plate portion 13 by the connecting portion 50, the claw portion 12 and the base plate portion 13 are individually molded and then connected to each other by the connecting portion 50. Can be fixed. For this reason, compared with the case where the nail | claw part 12 and the base board part 13 are shape | molded integrally, the case main body 5 can be manufactured easily. Further, since it is possible to attach a plurality of types of claw portions 12 corresponding to the heat sinks 6 of various shapes to the same base plate portion 13, it is possible to improve the versatility of the housing case 2.

  Further, according to the electronic apparatus 1 of the present embodiment, the rail portions 25 and 26 extending in the arrangement direction of the pair of claw portions 12 and the groove portions 34 and 35 engage with each other in a state where the heat sink 6 is attached to the case body 5. Therefore, it is possible to prevent the case main body 5 and the heat sink 6 from being displaced from each other around the axis line along the direction (X-axis direction) in which the main body portion 11 (base plate portion 13) and the heat sink 6 are overlapped. That is, it is possible to prevent the rotational deviation between the heat sink 6 and the case body 5 from occurring.

Furthermore, according to the electronic apparatus 1 of the present embodiment, since the substrate 7 of the heat generating part 3 is arranged on the first main surface 31a of the heat sink 6, the heat of the heat generating part 3 can be efficiently released to the heat sink 6. .
In particular, in this embodiment, the substrate 7 is sandwiched and fixed between the heat sink 6 and the base plate portion 13 by the pair of claws 12, and the substrate 7 is fixed by the elastic force of the biasing portion 27. Since it is pressed toward the first main surface 31 a, it is possible to suppress a gap (space) between the substrate 7 and the heat sink 6. Furthermore, since the heat-dissipating sheet 4 that can be elastically deformed is interposed between the substrate 7 and the heat sink 6, a gap (space) between the substrate 7 and the heat sink 6 can be filled. Therefore, the heat of the heat generating portion 3 can be released to the heat sink 6 more efficiently.

  Moreover, in this embodiment, since the heat sink 6 is provided with the heat sink wall part 32 in addition to the plate-shaped heat sink main body 31, the surface area of the heat sink 6 can be increased and the heat radiation efficiency of the heat generating part 3 can be further improved.

  Further, in the electronic apparatus 1 of the present embodiment, since the plurality of protrusions 101 are formed on the main surface 14a of the standing wall portion 14, the main surface 14a of the standing wall portion 14 is opposed to the mounting surface of the mounting substrate. Even if the electronic device 1 is mounted on the mounting board, the housing case 2 can be arranged on the mounting surface of the mounting board with a space. Thereby, even if the heat sink main body 31 located on the front end in the extending direction of the standing wall portion 14 faces the mounting surface of the mounting substrate, the heat sink 6 comes into contact with the wiring pattern formed on the mounting surface of the mounting substrate. Can be prevented. Therefore, it is possible to suppress an electrical short circuit between the heat sink 6 and the mounting substrate.

Although the details of the present invention have been described above, the present invention is not limited to the above-described embodiments, and various modifications can be made without departing from the spirit of the present invention.
For example, in the above-described embodiment, the locking recess 56 that accommodates the hook-shaped portion 53 of the locking claw 52 is formed in the base plate portion 13, but the present invention is not limited thereto, and may not be formed, for example. . The first claw portion 12A may be locked and fixed to the base plate portion 13 by at least the pair of locking claw portions 52 sandwiching the base plate portion 13 from the thickness direction.

  Moreover, the latching | locking part 51 is not restricted to being provided in 12 A of 1st claw parts, For example, you may be provided in the base board part 13. FIG. In this case, the locking portion may be a locking claw portion that is provided on the base plate portion 13 and extends toward the first claw portion 12A, like the locking claw portion 52 of the above embodiment. A locking hole for locking the locking claw portion of the base plate portion 13 may be formed in the claw portion 12A.

In addition, the restriction convex portion 61 and the restriction concave portion 62 constituting the movement restricting portion 60 are not limited to being formed in the shape of the above-described embodiment, and may be formed in a dot shape in a plan view, for example. In addition, for example, a plurality of restriction convex portions 61 and restriction concave portions 62 may be formed.
Further, in the movement restricting portion 60 of the above embodiment, the restricting convex portion 61 is formed on the base plate portion 13 and the restricting concave portion 62 is formed on the first claw portion 12A. The restriction recess 62 may be formed in the base plate portion 13.

Further, in the above embodiment, the key groove portion 58 of the second connecting portion 50B is formed in the claw portion 12 and the hook-shaped projection portion 59 is formed in the main body portion 11. For example, the key groove portion is formed in the main body portion 11. A hook-like protrusion that engages with the key groove may be formed on the claw portion 12.
Furthermore, the 2nd connection part 50B is not restricted to being comprised like the said embodiment, For example, you may be comprised similarly to 50 A of 1st connection parts. In this case, since the first claw portion 12A and the second claw portion 12B can be formed in the same shape, the manufacturing cost of the electronic device 1 (product) can be further reduced.

Moreover, although the 2nd nail | claw part 12B and the base board part 13 were mutually connected by the 2nd connection part 50B, it is not restricted to this, For example, you may form integrally.
Furthermore, in the above embodiment, both the pair of claw portions 12 are elastically deformable and deformable. For example, only one of the first claw portion 12A and the second claw portion 12B can be elastically bent and deformed. The other of the first claw portion 12A and the second claw portion 12B may be formed so as not to be elastically deformed.

  Moreover, in the said embodiment, although the main-body part 11 of the case main body 5 is provided with the urging | biasing part 27, it does not need to be provided, for example. In this case, the heat sink 6 and the heat generating part 3 are pressed against the main surfaces 13 a and 13 b of the base plate part 13 by the elastic force of the pair of claw parts 12, and the heat sink 6 and the heat generated between the flange part 23 and the base plate part 13. The part 3 may be inserted.

  Furthermore, the storage case 2 is not limited to having two storage spaces S, and may have only one storage space S, for example. That is, the housing case 2 may include only one case body 5 and one heat sink 6, for example.

  The fixing structure and the fixing method of the present invention are not limited to being applied to the electronic device 1 and the housing case 2 of the above embodiment, and can be applied to a structure that fixes at least two members to each other. is there.

1 Electronic device 2 Housing case 5 Case body (first member)
6 Heat sink (second member)
7 Substrate 8 Electronic component 11 Body portion 12 Claw portion 12A First claw portion 12B Second claw portion 13 Base plate portion 51 Locking portion 52 Locking claw portion 60 Movement restricting portion S Storage space

Claims (5)

A fixing structure for fixing the first member and a second member having higher rigidity than the first member,
The first member is formed to extend from the main body portion in the same direction and spaced from each other, sandwich the second member from the side, and the first member between the main body portion and the first member. A pair of claws that sandwich the two members,
At least one claw portion is elastically bent and deformable with respect to the main body portion,
One of the first claw portion and the main body portion of the pair of claw portions brings the first claw portion and the main body portion closer to each other in the arrangement direction of the pair of claw portions, thereby A fixing structure comprising a locking portion that locks and fixes the main body portions to each other. The main body portion is formed in a plate shape, and includes a base plate portion that is locked and fixed to the first claw portion by the locking portion,
The fixing structure according to claim 1, wherein the locking portion includes a pair of locking claw portions provided on the first claw portion and sandwiching the base plate portion from the thickness direction thereof.   In a state where the first claw portion and the main body portion are locked and fixed to each other by the locking portion, the relative movement of the first claw portion and the main body portion in a direction orthogonal to the arrangement direction is restricted. The fixing structure according to claim 1, further comprising a movement restricting portion.   The fixing structure according to any one of claims 1 to 3, wherein the first member and the second member constitute a housing case having a housing space therein. A fixing method according to any one of claims 1 to 4, wherein the second member is fixed to the first member.
After arranging the second member on the main body portion so that the second member is adjacent to the second claw portion in the arrangement direction,
The fixing method, wherein the first claw portion is brought close to the main body portion from the arrangement direction, and is locked and fixed to the main body portion by the locking portion.

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