Management structure

Abstract

A management structure comprising: a plurality of elastic members (4) having flat shapes provided for a first sheet (1), two adjacent ones of the elastic members (4) being aligned, a slit (3) formed in the first sheet (1) being inserted between the adjacent two of the elastic members (4), both ends of each of the elastic members (4) being connected to the respective two ends of an adjacent one of the elastic members (4); and Projections (5) provided for a second sheet (2) overlapped with the first sheet (1), each of which projects towards a corresponding part of the elastic parts (4) provided for the first sheet (1).

Description

TECHNICAL AREA

[0001] The present invention relates to a conductive structure for making sheets conductive to each other. STATE OF THE ART

[0002] In electronic devices, there is a case where it is necessary to ensure conductivity between sheets. For example, there is a case where conductivity between sheets must be ensured for electromagnetic compatibility (EMC) measures. More specifically, a large electronic device requires a sheet with a large area. However, if a large sheet is used, production costs will increase and productivity will decrease. For example, there is a case where a plurality of small sheets are arranged to partially overlap to ensure conductivity between the small sheets and used instead of the large sheet. To ensure conductivity between the sheets, it is important that the sheets be in stable contact with each other.

[0003] For example, in a terminal attachment structure of JP 2009-105036 A, a terminal is conductively connected to a conductor formed on a substrate. The terminal includes a fastening portion, an elastic portion extending from the fastening portion, and a substrate contact portion provided on the elastic portion. The substrate contact portion is provided on the elastic portion so as to protrude toward the substrate and is electrically connected to the conductor. Furthermore, the substrate contact portion is bonded to the substrate with an adhesive while being in contact with the conductor.

[0004] From US 2013 / 0 027 893 A1 a shield is known for shielding components on a printed circuit board from electromagnetic interference and / or radio frequency interference.

[0005] From DE 601 10 267 T2 a shielding element for electrical and / or electronic components of an electrical and / or electronic circuit is known.

[0006] From DE 297 15 114 U1, a subrack with a straight and an angled cover plate, which form an angle connection for a housing, is known, wherein hooks are bent out of the straight plate in order to receive a leg of the angled plate therein.

[0007] From US 2012 / 0 217 051 A1 a shielding assembly comprising a pair of covers is known.

[0008] From US 5 383 098 A an electronic assembly comprising a chassis, printed circuit boards and a shielding element is known. SUMMARY OF THE INVENTION TECHNICAL PROBLEM

[0009] In the structure described in JP 2009-105036 A, the elastic part and the substrate contact part are formed by a wave-shaped curved member. When the member is curved in a wave shape, the shape tends to change at the time of manufacturing, and the shape tends to deform after manufacturing. For this reason, in the structure described in JP 2009-105036 A, there is a case where the substrate contact portion cannot be in contact with the substrate, and therefore the contact between the substrate contact portion and the conductor is unstable. For example, even if such a structure described in JP 2009-105036 A is applied to a wiring structure between sheets, the sheets cannot be caused to stably contact each other.

[0010] The present invention has been made to solve the problem described above and therefore has an object to provide a conductive structure capable of causing the sheets to stably contact each other. SOLUTION TO THE PROBLEM

[0011] The problem is solved by a line structure according to claim 1. Advantageous embodiments emerge from the subclaims. ADVANTAGEOUS EFFECTS OF THE INVENTION

[0012] According to the present invention, the elastic members having flat shapes provided for the first sheet and the projections provided for the second sheet cause the sheets to stably contact each other. BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a perspective view illustrating a wiring structure according to a first embodiment before a first sheet and a second sheet overlap each other. Fig. 2 is a perspective view illustrating the wiring structure according to the first embodiment when the first sheet 1 and the second sheet 2 overlap each other. Fig. 3 is a perspective cross-sectional view of the first sheet and the second sheet taken along the line AA in Fig. 2 were cut. Fig. 4 is a perspective view illustrating a modification of the piping structure. Fig. 5 is a perspective view illustrating a modification of the slots. Fig. 6 is an exploded perspective view showing an electronic device including the wiring structure according to the first embodiment. Fig. 7 is an external perspective view of the electronic device in Fig. 6. Fig. 8 is a perspective view illustrating a wiring structure according to a configuration of the first embodiment before the first sheet and the second sheet overlap each other. Fig. Fig. 9 is a side view of the line structure according to the second embodiment from a direction D5 in Fig. 8. Fig. 10 is a perspective view illustrating a wiring structure according to a third embodiment when the first sheet 1 and the second sheet 2 overlap each other. Fig. 11 is a side view illustrating the wiring structure according to the third embodiment before the first sheet and the second sheet overlap each other. Fig. 12 is a side view of the line structure according to the third embodiment from a direction D6 in Fig. 10. DESCRIPTION OF THE EMBODIMENTS

[0013] In order to explain the present invention in more detail, embodiments for carrying out the present invention are described below with reference to the accompanying drawings. First embodiment.

[0014] Fig. 1 is a perspective view illustrating a wiring structure according to a first embodiment. Fig. 1 illustrates a state before a first sheet 1 and a second sheet 2 overlap each other.

[0015] The first sheet 1 is provided with slots 3, each of which has a substantially rectangular shape. A plurality of the slots 3 are aligned in a short direction D1 of the slot 3 itself.

[0016] Elastic members 4 having substantially rectangular, flat shapes are provided adjacent to each other between the slots 3. Each of the elastic members 4 is aligned with an adjacent elastic member 4, with the slot 3 therebetween. A direction D2 in which the elastic members 4 are aligned almost coincides with the short direction D1 of the slot 3.

[0017] The circumference of the slot 3 is a closed curve, and the two ends of each of the elastic parts 4 are connected to the two ends of the adjacent elastic parts 4. The two ends are two ends aligned in the longitudinal direction of the slot 3.

[0018] The second sheet 2 is provided with projections 5. The projection 5 protrudes from the second sheet 2 in a substantially hemispherical shape. The projection 5 is attached to the second sheet 2, for example, by doweling. Alternatively, the projection 5 is provided, for example, by attaching a substantially hemispherical metal element to the second sheet 2 in a state where they are brought into conductive contact with each other. In this case, the substantially hemispherical metal element is the projection 5.

[0019] The number of projections 5 is basically equal to the number of elastic parts 4. Moreover, the distance between the adjacent projections 5 is substantially the same as the distance between the adjacent elastic parts 4. Here, the distance between the adjacent projections 5 is, for example, the distance between the centers of the projections 5. The distance between the adjacent elastic parts 4 is, for example, the distance between the centers of the elastic parts 4 in the direction D2 in which the elastic parts 4 are aligned.

[0020] As in Fig. 1, the second sheet 2 is to be overlapped with the first sheet 1 by moving it in a direction D3 in a state where the projections 5 protrude toward the elastic parts 4 of the first sheet 1. The direction D3 is a direction substantially perpendicular to both surfaces of the first sheet 1 and the second sheet 2 when the sheets are arranged so that their surfaces are substantially parallel to each other.

[0021] Fig. Fig. 2 is a perspective view showing the wiring structure according to the first embodiment, similar to Fig. 1, illustrated. Fig. 2 illustrates a state in which the first sheet 1 and the second sheet 2 overlap each other.

[0022] Although not illustrated, the second sheet 2 and the first sheet 1 are secured together by a known method such as screwing or claw pairing. Alternatively, the second sheet 2 and the first sheet 1 may be secured together by a member (not shown) that holds the second sheet 2 and the first sheet 1 together. At this time, the projection 5 provided for the second sheet 2 pushes the elastic part 4 provided for the first sheet 1 in a direction D4 in Fig. 2 and thereby bends the elastic part 4. The direction D4 is a direction substantially perpendicular to both surfaces of the first sheet 1 and the second sheet 2 when the sheets are arranged so that their surfaces are substantially parallel to each other.

[0023] Fig. Fig. 3 is a perspective cross-sectional view of the first sheet 1 and the second sheet 2 taken along the line AA in Fig. 2 were cut. The projection 5 is in contact with the elastic part 4 in a state in which the elastic part 4 is elastically deformed.

[0024] As in Fig. 1, the elastic part 4 does not have a complicated shape such as wavy curved, but has a flat shape, so that the deviation of the shape from the other elastic parts 4 is smaller. Since the protrusion 5 only needs to be provided for the flat second sheet 2, the deviation of the shape, such as the height of the protrusion of the second sheet 2, from the other protrusions 5 is smaller. Thus, the protrusion 5 can be stably in contact with the elastic part 4. Moreover, the elastic part 4 bends individually even if the amount of the protrusion 5 varies within a tolerance, whereby the protrusion 5 can be stably in contact with the elastic part 4. Thus, the conductivity between the first sheet 1 and the second sheet 2 is sufficiently ensured.

[0025] The elasticity of the elastic part 4 allows a state to be maintained in which the elastic part 4 and the protrusion 5 are in stable contact with each other, so reinforcement with an adhesive or the like to maintain the contact state is unnecessary. Reinforcing with the adhesive requires organizing the work to achieve the contact state when the adhesive is fixed, which is laborious.

[0026] Furthermore, the two ends of the elastic part 4 are connected to the two ends of the adjacent elastic part 4, thus forming fixed ends, making the elastic part 4 less likely to be deformed during handling of the first sheet 1. Furthermore, the fact that the elastic piece 4 has a flat shape and does not protrude from other parts of the first sheet 1 also contributes to the elastic piece 4 being less likely to be deformed during handling. For example, if the elastic part 4 is curved in a wave-like manner, the protruding curved part is likely to be deformed due to contact with or catching on another part during handling.

[0027] Furthermore, since the protrusion 5 has a substantially hemispherical shape, metal powder is less likely to be generated by scraping the elastic part 4 or the protrusion 5 during contact between the elastic part 4 and the protrusion 5. When the protrusion 5 has a shape with a corner, the elastic part 4 or the protrusion 5 is scraped during contact between the elastic part 4 and the protrusion 5, so metal powder is easily generated. The metal powder enters a substrate (not shown) as a metallic foreign matter, thereby causing a short circuit.

[0028] It should be noted that in the above description, the case was described where the projection 5 is provided for the second sheet 2. However, the projection 5 only needs to be inserted between the second sheet 2 and the elastic part 4 provided for the first sheet 1, and thus can be provided for the first sheet 1. For example, if the processing of the second sheet 2 is limited due to the material of the second sheet 2 and it is therefore difficult to attach the projection 5 to the second sheet 2, the projection 5 can be attached to the elastic part 4, as shown in Fig. 4. The Fig. The projection 5 shown in Figure 4 is partially mounted on each of the elastic parts 4 in the direction D2 in which the elastic parts 4 are aligned. The direction D2 corresponds to the direction shown in Fig. 1 shown direction.

[0029] Fig. 4 illustrates a state in which the first sheet 1 and the second sheet 2 overlap each other and the second sheet 2 is to be overlapped with the first sheet 1 in a state in which the projection 5 projects toward the second sheet 2.

[0030] Even if the management structure as in Fig. 4, the line between the first sheet 1 and the second sheet 2 is similar to that shown with reference to Fig. 1, Fig. 2 and Fig. 3 is sufficiently ensured. More specifically, the protrusion 5 is provided not entirely but partially in the direction D2 in which the elastic parts 4 are aligned, and the elastic part 4 does not have a complicated shape such as wave-like curvature while being provided with the protrusion 5, and therefore there is less variation in the shape of the other elastic parts 4. Moreover, even if the amount of the protrusion 5 varies within a tolerance, the elastic part 4 bends individually, and the protrusion 5 can stably contact the second sheet 2. Thus, the conductivity between the first sheet 1 and the second sheet 2 is sufficiently ensured.

[0031] Furthermore, in the above description, the case where the protrusion 5 has a substantially hemispherical shape was described. However, from the viewpoint of ensuring conduction between the first sheet 1 and the second sheet 2, the shape of the protrusion 5 may have a different shape, for example, a substantially columnar shape. In short, the protrusion 5 can have any shape as long as it protrudes.

[0032] However, as described above, it is preferable for the protrusion 5 to have a substantially hemispherical shape because it is less likely to generate metal powder. Note that an example of a preferable shape of the protrusion 5 in which metal powder is less likely to be generated is the shape of a portion of a sphere, including the substantially hemispherical shape shown. In addition, when a shape has a smooth, curved surface, even if it is not part of a complete sphere, it can be said that the shape is the preferable shape of the protrusion 5 in which metal powder is less likely to be generated. Here, each of these preferable shapes is referred to as a shape having a spherical surface.

[0033] Furthermore, in the above description, the case where the slot 3 has a substantially rectangular shape was described. However, the slot 3 may have a different shape, such as a substantially crescent shape. In short, it is sufficient that the slot 3 can form the elastic part 4. Furthermore, the number of slots 3 is not limited to the number shown above.

[0034] Furthermore, in the above description, the case was described where each of the edges of all the slits 3 is a closed curve and the elastic parts 4 are formed by such slits 3. However, as in Fig. 5, for example, under the slits 3 forming the elastic members 4, each of the perimeters of some slits 3a may be an open curve.

[0035] Fig. Fig. 6 is an exploded perspective view showing an electronic device 10 including the wiring structure according to the first embodiment. Fig. 7 is an external perspective view of the electronic device 10.

[0036] In the electronic device 10, the substrates 13 are mounted in an interior space formed by screwing together an upper housing 11 and a lower housing 12. The first sheet 1 and the second sheet 2 are electrically connected to each other by the conductive structure described above and thus function as a shielding sheet of the electronic device 10.

[0037] It should be noted that when the electronic device 10 is mounted in a vehicle, vibration, shock, or the like occurs during driving. Since the elastic member 4 is not easily deformed as described above, it is particularly suitable for use in an environment where vibration, shock, or the like occurs. In addition, when the protrusion 5 has a spherical surface, metal powder is unlikely to be generated by scraping as described above even if vibration, shock, or the like occurs. In this respect, too, the wiring structure according to the first embodiment is suitable for use in an environment where vibration, shock, or the like is applied.

[0038] As described above, in the embodiment according to the first embodiment, there are fewer variations in the shape of the elastic parts 4 and the projections 5 which serve to make the first sheet 1 and the second sheet 2 come into contact with each other, so that the first sheet 1 and the second sheet 2 can be stably brought into contact with each other.

[0039] In addition, the projection 5 has a spherical surface. This can suppress the generation of metallic foreign matter.

[0040] Furthermore, the electronic device 10 contains the conductive structure described above. The first sheet 1 and the second sheet 2 function, for example, as a shielding plate of the electronic device 10.

[0041] Furthermore, the electronic device 10, including the wiring structure, is intended to be installed in a vehicle. The first sheet 1 and the second sheet 2 can be stably brought into contact with each other even in an environment subject to vibrations, shocks, or the like.

[0042] Design of the first embodiment.

[0043] Fig. 8 is a perspective view illustrating a wiring structure according to a configuration of the first embodiment. Fig. 8 illustrates a state before the first sheet 1 and the second sheet 2 overlap each other.

[0044] The first sheet 1 of this embodiment contains a recess 6, unlike the first sheet 1 of the first embodiment. The recess 6 is created, for example, by subjecting the first sheet 1 to a Z-bend process.

[0045] Fig. 9 is a side view of the line structure according to the embodiment. Fig. 9 is a side view from the direction D5 in Fig. 8. The second sheet 2 is to be overlapped with the recess 6. Therefore, when the first sheet 1 and the second sheet 2 are overlapped, a surface on the opposite side of the second sheet 2 from a surface facing the first sheet 1 is located on a line L in Fig. 9. More specifically, it is possible to prevent the second sheet 2 from rising to a higher level in Fig. 9 protrudes as a part of the first sheet 1 except for the recess 6. It should be noted that the amount of projection of the second sheet 2 when the second sheet 2 is overlapped with the recess 6 can be adjusted accordingly by adjusting the depth of the recess 6. The Fig. 8 and Fig. The duct structure shown in Figure 9 is useful when a space on the opposite side of the first sheet 1, as seen from the second sheet 2, has no edge.

[0046] As described above, in the wiring structure according to the second embodiment, in addition to the effects of the first embodiment, the position of the second sheet 2 in the thickness direction of the first sheet 1 can be adjusted.

[0047] It should be noted that in Fig. 8 and Fig. 9 the case was shown that the recess 6 on the first sheet 1 is provided in the conduction structure in which the projections 5 are provided on the second sheet 2. Even if the first sheet 1 is provided with the recess 6 in the conduction structure in which the projections 5 are provided on the first sheet 1, as in Fig. 4, a similar effect can be achieved.

[0048] Further embodiment of the first embodiment and second embodiment.

[0049] Fig. 10 is a perspective view illustrating a wiring structure according to another configuration of the first embodiment. Fig. 10 illustrates a state in which the first sheet 1 and the second sheet 2 overlap each other.

[0050] At both ends of the elastic part 4, a support element 7a and a support element 7b are provided on a surface on the opposite side of a surface with which the second sheet 2 is overlapped.

[0051] The support elements 7a and 7b are rod-shaped elements that extend in the direction D2, in which the elastic parts 4 are aligned, at both ends of the elastic part 4. The direction D2 is as in Fig. 1 shown.

[0052] Fig. 11 is a side view showing a state before the first sheet 1 and the second sheet 2 are overlapped. Fig. 12 is a side view illustrating a state in which the first sheet 1 and the second sheet 2 overlap each other. Fig. 12 corresponds to a side view from a direction D6 in Fig. 10.

[0053] The support members 7a and 7b are provided, which can prevent the entire first sheet 1 from bending even when the pressing force that the first sheet 1 receives from the second sheet 2 is large when the second sheet 2 is overlapped with the first sheet 1. Thus, even when the pressing force that the first sheet 1 receives from the second sheet 2 is large, the conduction between the first sheet 1 and the second sheet 2 is sufficiently ensured.

[0054] As described above, with the piping structure according to the third embodiment, the effect of the first embodiment can be achieved even when the pressing force that the first sheet 1 receives from the second sheet 2 is large.

[0055] It should be noted that in the Fig. 10, Fig. 11 and Fig. 12, the case was illustrated that the support elements 7a and 7b are provided on the first sheet 1 in the conduction structure in which the projections 5 are provided on the second sheet 2. Even if the first sheet 1 is provided with the support elements 7a and 7b in the conduction structure in which the projections 5 are provided on the first sheet 1, as in Fig. A similar effect can be achieved as shown in Figure 4. This corresponds to a second embodiment. INDUSTRIAL APPLICABILITY

[0056] As described above, the conductive structure according to the invention can ensure that the sheets are in stable contact with each other and is therefore suitable, for example, for use in electronic devices that require EMC measurements. REFERENCE SYMBOL LIST

[0057] 1: first sheet, 2: second sheet, 3, 3a: slot, 4: elastic part, 5: projection, 6: recess, 7a, 7b: support part, 10: electronic device, 11: upper case, 12: lower case, 13: substrate

Claims

[1] A management structure comprising: a plurality of elastic members (4) having flat shapes provided for a first sheet (1), two adjacent ones of the elastic members (4) being aligned, a slit (3) formed in the first sheet (1) being inserted between the adjacent two of the elastic members (4), both ends of each of the elastic members (4) being connected to the respective two ends of an adjacent one of the elastic members (4); and Projections (5) provided for a second sheet (2) overlapped with the first sheet (1), each of which projects towards a corresponding part of the elastic parts (4) provided for the first sheet (1). [2] The line structure according to claim 1, wherein the second sheet (2) is overlapped with a recess (6) provided in the first sheet (1). [3] The conductive structure according to claim 1, wherein each of the projections (5) has a spherical surface.

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