JP7538751B2 - Disassembly of the housing - Google Patents

Description

The present invention relates to a disassembly structure for a housing.

Patent Document 1 discloses a pressing bolt used to separate two flanges. The pressing bolt includes a screw shaft with a screw thread formed on its outer circumferential surface, a bolt head connected to the screw shaft, and an extension member at least a portion of which is inserted into a hole formed in the end surface of the screw shaft.

JP 2019-166610 A

To separate two flanges using the push bolt described in Patent Document 1, it is necessary to first remove the push bolt from the flange, adjust the length of the extension member, and then screw the push bolt back into the flange, meaning that the two parts cannot be disassembled in a single operation.

The present invention was made in consideration of these circumstances, and aims to provide a housing disassembly structure that allows two parts to be disassembled in a single operation.

In order to solve the above problem, the disassembly structure of a housing according to the present invention is, for example, a disassembly structure of a housing including a housing in which a second part is bonded to a first part, and a pressing bolt that is detachable from the second part and has a bolt body and a spherical ball member provided at the tip of the bolt body, the second part has a first screw hole into which the pressing bolt is screwed, the first part has a pilot hole formed at a position that overlaps with the first screw hole when viewed along the central axis of the first screw hole, the tip of the pressing bolt has a spherical hole into which the spherical member is inserted, when the spherical member is inserted into the spherical hole, a part of the spherical member protrudes from the tip of the bolt body, there is a gap between the spherical hole and the spherical member, and when the pressing bolt is screwed into the first screw hole, the spherical member abuts against the pilot hole.

According to the disassembly structure of the housing of the present invention, the second part bonded to the first part has a first screw hole into which the pressing bolt is screwed. The tip of the pressing bolt has a spherical hole into which a ball member is inserted, and when the ball member is inserted into the spherical hole, a part of the ball member protrudes from the tip of the bolt body. The first part has a pilot hole formed at a position that overlaps with the first screw hole when viewed along the central axis of the first screw hole, and when the pressing bolt is screwed into the first screw hole, the ball member abuts against the pilot hole. This allows the two parts (the first part and the second part) to be disassembled with a single action of screwing the pressing bolt into the second part. In addition, since the ball member is movable relative to the spherical hole, the ball member can press down the pilot hole even if the first part and the second part are misaligned.

The opening of the pilot hole may be provided with a chamfer formed by cutting the corner. This allows the ball member to press against the chamfer, and the force used to screw the press bolt into the second component can be efficiently transmitted to the first component.

The chamfer may be a curved surface that is convex in the direction in which the diameter of the pilot hole becomes smaller. This makes it easier for the ball member to come into contact with the chamfer.

The chamfer is a curved surface that is concave in the direction in which the diameter of the pilot hole increases, and the radius of the chamfer may be approximately the same as the radius of the spherical member. This allows the spherical member and the chamfer to come into contact with each other at a surface, preventing the spherical member from spinning freely.

The pressing bolt may have a leaf spring provided inside the spherical hole, and when the spherical member is provided in the spherical hole, the leaf spring may apply a force to the spherical member in a direction that pushes the spherical member out of the pressing bolt. The force with which the spherical member presses the first component can be adjusted by an elastic member.

The present invention allows two parts to be disassembled in one motion.

1 is a diagram showing an outline of an exploded view of a housing structure 1 according to a first embodiment; 1A is a schematic diagram of a pressing bolt 30, and FIG. 1B is a partially enlarged view of FIG. 1 is a schematic diagram showing a state in which the housing disassembly structure 1 disassembles the lower case 10 and the cover 20 using a pressing bolt 30. FIG. 1 is a schematic diagram showing a state in which a ball 32 abuts against a pilot hole 11. FIG. 13 is a schematic diagram showing a state in which a ball 32 abuts against a pilot hole 11 when a lower case 10 and a cover 20 are not assembled normally. FIG. 13 is a schematic diagram showing a state in which the ball 32 abuts against the pilot hole 11 when the lower case 10 and the cover 20 are significantly misaligned and the tip 31d of the shaft portion 31a does not abut against the surface of the lower case 10. FIG. 13 is a schematic diagram showing a state in which a ball 32 abuts against chamfers 12A and 12B according to a modified example. FIG. 2 is a partially enlarged view showing an outline of an exploded structure 2 of the housing. FIG.

Hereinafter, an embodiment of a disassembly structure for a housing according to one embodiment of the present invention will be described in detail with reference to the drawings. This disassembly structure for a housing is a structure for disassembling two parts in an electronic device or the like, for example, when the two parts are adhered and sealed with an adhesive or sealant to form a waterproof structure.

First Embodiment
1 is a diagram showing an outline of a housing disassembly structure 1 according to a first embodiment. The housing disassembly structure 1 mainly includes a housing 50 having a lower case 10 (corresponding to a first part of the present invention) and a cover 20 (corresponding to a second part of the present invention), and a pressing bolt 30.

Note that FIG. 1 illustrates only a portion of the housing 50. Also, FIG. 1 illustrates a cross-section of the housing 50.

The lower case 10 and the cover 20 each have a plate-shaped portion 15, 25, and adhesive 60 is applied between the plate-shaped portion 15 and the plate-shaped portion 25. In other words, the cover 20 is adhered to the lower case 10 by the adhesive 60. The housing disassembly structure 1 is a structure for disassembling two parts (the lower case 10 and the cover 20) using a pressing bolt 30.

The lower case 10 has a pilot hole 11. The cover 20 has a screw hole 21 with a female thread into which the push bolt 30 is screwed. When viewed along the central axis ax1 of the screw hole 21, the pilot hole 11 and the screw hole 21 are aligned.

The pressing bolt 30 is detachable from the cover 20. The pressing bolt 30 has a bolt body 31 and a spherical ball 32 (corresponding to the ball member of the present invention) provided at the tip of the bolt body 31.

Figure 2(A) is a schematic diagram of the push bolt 30, and Figure 2(B) is a partially enlarged view of Figure 2(A). Figure 2 shows a cross-section of a portion of the bolt body 31 and the ball 32.

The bolt body 31 has a shaft portion 31a and a head portion 31e. The outer peripheral surface of the shaft portion 31a is provided with a male thread portion 31c that can be screwed into a female thread portion formed in the screw hole 21. The tip 31d of the bolt body 31 is provided with a spherical hole 31b into which a ball 32 is inserted. In the present invention, the tip 31d of the bolt body 31 refers to the end of the shaft portion 31a on the side where the head portion 31e is not provided.

The shape of the spherical hole 31b is a spherical notch larger than a hemisphere. Therefore, when the ball 32 is inserted into the spherical hole 31b, a part of the ball 32 protrudes from the tip 31d. In addition, the radius of the spherical hole 31b is larger than the radius of the ball 32, and there is a gap between the spherical hole 31b and the ball 32. Therefore, the ball 32 can move laterally (in a direction perpendicular to the central axis ax3 of the shaft portion 31a) inside the spherical hole 31b.

Figure 3 is a schematic diagram showing how the housing disassembly structure 1 disassembles the lower case 10 and the cover 20 using the pressing bolt 30. The pressing bolt 30 is provided on the cover 20 by screwing the male threaded portion 31c into the female threaded portion formed in the screw hole 21. When the male threaded portion 31c is screwed into the female threaded portion formed in the screw hole 21, the pressing bolt 30 is screwed into the cover 20 and the ball 32 abuts against the pilot hole 11 of the lower case 10.

When the push bolt 30 is further screwed into the cover 20 with the ball 32 in contact with the pilot hole 11, the cover 20 is lifted from the lower case 10. As a result, the adhesive 60 applied between the plate-shaped portion 15 and the plate-shaped portion 25 is stretched and cut, and the lower case 10 and the cover 20 are disassembled.

Figure 4 is a schematic diagram showing the state in which the ball 32 abuts against the pilot hole 11. The opening of the pilot hole 11 is provided with a chamfer 12 formed by cutting the corner. The chamfer 12 is a so-called C-chamfer in which the corner is beveled off.

When the lower case 10 and cover 20 are assembled correctly, the central axis ax1 of the screw hole 21 and the central axis ax2 of the pilot hole 11 are approximately aligned. As a result, the ball 32 and the chamfer 12 come into contact on a circular line, and the entire ball 32 presses against the chamfer 12, i.e., the pilot hole 11.

The ball 32 presses against the chamfer 12, applying a force to the lower case 10 in a direction along the central axes ax1 and ax2. Therefore, the force that screws the pressing bolt 30 into the cover 20 can be efficiently transmitted to the lower case 10.

On the other hand, it is also possible that the lower case 10 and the cover 20 are not assembled properly, and the central axis ax1 and the central axis ax2 are misaligned. Figure 5 is a schematic diagram showing the state in which the ball 32 abuts against the pilot hole 11 when the lower case 10 and the cover 20 are not assembled properly.

Because the ball 32 can move laterally (left and right in FIG. 5) inside the spherical hole 31b, even if the central axis ax1 and the central axis ax2 are misaligned, the ball 32 moves laterally and the ball 32 comes into contact with the chamfer 12. Therefore, even if the lower case 10 and the cover 20 are not assembled correctly, the ball 32 can press the chamfer 12, i.e., the pilot hole 11.

Figure 6 is a schematic diagram showing the state in which the ball 32 abuts against the pilot hole 11 when the lower case 10 and the cover 20 are significantly misaligned and the tip 31d of the shaft 31a does not abut against the surface of the lower case 10 (see the dotted line in Figure 6). Even in such a case, by providing the ball 32 at the tip 31d, the ball 32 can press against the chamfer 12, i.e., the pilot hole 11.

According to this embodiment, the lower case 10 and the cover 20 can be disassembled by a single action of screwing the pressing bolt 30 into the cover 20. In particular, since the ball 32 provided at the tip 31d of the pressing bolt 30 can move laterally, the ball 32 can press down the pilot hole 11, i.e., the lower case 10, even if the lower case 10 and the cover 20 are misaligned.

In addition, according to this embodiment, by providing a chamfer 12 in the pilot hole 11, the ball 32 presses against the chamfer 12. Therefore, the force of screwing the pressing bolt 30 into the cover 20 can be efficiently transmitted to the lower case 10. In addition, since the ball 32 does not come into contact with the surface of the lower case 10, the surface of the lower case 10 is not scratched when the lower case 10 and the cover 20 are disassembled.

In this embodiment, the screw holes 21 are formed directly in the cover 20, but the manner in which the screw holes 21 are provided in the cover 20 is not limited to this. For example, the screw holes 21 may be provided in the cover 20 by fixing a cylindrical member having the screw holes 21 formed therein by fitting it into a hole provided in the cover 20.

In addition, in this embodiment, the pilot hole 11 is provided with a chamfer 12 that is a C-chamfer, but the shape of the chamfer is not limited to this. For example, Figure 7 is a schematic diagram showing the state in which the ball 32 abuts against the chamfers 12A and 12B in a modified example.

In case 10A in FIG. 7(A), the opening of pilot hole 11 has chamfer 12A formed by cutting the corner. Chamfer 12A is a curved surface that is convex in the direction in which the diameter of pilot hole 11 becomes smaller, a so-called R chamfer. In this case, ball 32 is more likely to come into contact with chamfer 12A. Also, even if lower case 10 and cover 20 are misaligned, the possibility of ball 32 coming into contact with the surface of lower case 10 is reduced, and the surface of lower case 10 is less likely to be scratched when lower case 10 and cover 20 are disassembled.

In case 10B in FIG. 7(B), the opening of pilot hole 11 has a chamfer 12B formed by cutting off the corner. Chamfer 12B is a curved surface that is concave in the direction in which the diameter of the pilot hole increases, and the radius of chamfer 12B is approximately the same as the radius of ball 32. This allows ball 32 and chamfer 12B to abut on each other, making it easier to transmit force from pressure bolt 30 to lower case 10. In addition, because ball 32 and chamfer 12B abut on each other on each other, it is possible to prevent ball 32 from spinning freely.

Second Embodiment
The second embodiment of the present invention differs from the first embodiment in the form of the push bolt. The disassembled structure 2 of the housing according to the second embodiment will be described below. Note that the same parts as those in the disassembled structure 1 of the housing according to the first embodiment are given the same reference numerals and will not be described.

Figure 8 is a partially enlarged view showing an outline of the housing disassembly structure 2. The housing disassembly structure 2 mainly comprises a housing 50 (partially not shown) having a lower case 10 and a cover 20 (not shown), and a pressing bolt 30A (partially not shown).

The pressing bolt 30A is detachable from the cover 20. The pressing bolt 30A has a bolt body 31A and a spherical ball 32 provided at the tip of the bolt body 31A.

The tip 31d of the bolt body 31A is provided with a spherical hole 31b into which the ball 32 is inserted. A leaf spring 33 (corresponding to the elastic member of the present invention) is provided inside the spherical hole 31b. When the ball 32 is provided in the spherical hole 31b, the leaf spring 33 applies a force to the ball 32 in a direction that pushes the ball 32 out of the push bolt 30A.

In this embodiment, the force with which the ball 32 presses against the lower case 10 can be adjusted by the leaf spring 33.

In addition, according to this embodiment, by providing the leaf spring 33, the leaf spring 33 acts as a spacer, and the distance between the upper surface 13 of the lower case 10 and the tip 31d of the pressing bolt 30 can be increased compared to when the leaf spring 33 is not provided. This reduces the possibility that the pressing bolt 30 will come into contact with the surface of the lower case 10.

In this embodiment, the leaf spring 33 is provided inside the spherical hole 31b, but the elastic member provided inside the spherical hole 31b is not limited to the leaf spring 33. For example, a coil spring may be provided between the spherical hole 31b and the ball 32. Also, for example, rubber or the like may be provided inside the spherical hole 31b.

The embodiment of the present invention has been described above in detail with reference to the drawings, but the specific configuration is not limited to this embodiment, and design changes and the like that do not deviate from the gist of the present invention are also included.

In the present invention, "approximately" is a concept that includes not only cases where something is strictly the same, but also errors and deformations that do not lose their identity. For example, "approximately parallel" and "approximately orthogonal" are not limited to cases where something is strictly parallel or orthogonal. For example, when simply expressing "parallel" or "orthogonal", it includes cases where something is approximately parallel or approximately orthogonal, rather than only cases where something is strictly parallel or orthogonal. In the present invention, "near" is a concept that indicates, for example, when referring to the vicinity of A, that something is close to A and may or may not include A.

Reference Signs List 1, 2: Disassembly structure 10, 10A, 10B: Lower case 11: Pilot hole 12, 12A, 12B: Chamfer 15: Plate-shaped portion 20: Cover 21: Screw hole 25: Plate-shaped portion 30, 30A: Press bolt 31, 31A: Bolt body 31a: Shaft portion 31b: Spherical hole 31c: Male thread portion 31d: Tip 31e: Head portion 32: Ball 33: Leaf spring 50: Housing 60: Adhesive

Claims (4)

a housing having a first component and a second component bonded thereto;
a pressing bolt that is detachable from the second component, the pressing bolt having a bolt body and a spherical ball member provided at a tip of the bolt body;
A disassembly structure of a housing comprising:
The second part has a first screw hole into which the pressing bolt is screwed.
a pilot hole is formed in the first component at a position overlapping with the first screw hole when viewed along a central axis of the first screw hole;
The pushing bolt has a tip provided with a spherical hole into which the ball member is inserted,
When the spherical member is inserted into the spherical hole, a part of the spherical member protrudes from a tip of the bolt body, and a gap is formed between the spherical hole and the spherical member,
When the pressing bolt is screwed into the first screw hole, the ball member abuts against the pilot hole,
The opening of the pilot hole is provided with a chamfer formed by removing a corner,
The ball member is movable within the spherical hole in a direction perpendicular to the central axis of the bolt body.
A disassembled structure of a housing. The disassembly structure for a housing according to claim 1 , wherein the chamfer is a curved surface that is convex in a direction in which the diameter of the prepared hole becomes smaller. The chamfer is a curved surface that is concave in a direction in which the hole diameter of the pilot hole increases,
The disassembled structure of a housing according to claim 1 , wherein a radius of the chamfer is substantially the same as a radius of the spherical member. The pressing bolt has a leaf spring disposed inside the spherical hole,
The disassembly structure of a housing according to any one of claims 1 to 3 , characterized in that, when the spherical member is placed in the spherical hole, the leaf spring applies a force to the spherical member in a direction pushing the spherical member out of the push bolt.

Images