Electronic device

Abstract

An electronic device according to the present invention comprises: a first circuit board that has a first main surface and a second main surface which is the reverse surface from the first main surface; a first slot member that is in contact with the first main surface and guides a second circuit board to the first main surface; and a second slot member that is in contact with the second main surface and guides a third circuit board to the second main surface.

Description

Electronic device

[0001] This disclosure relates to an electronic device.

[0002] Japanese Unexamined Patent Application Publication No. 2011-60484 discloses a fixing structure of a connector. According to Japanese Unexamined Patent Application Publication No. 2011-60484, a locking projection provided on the connector is inserted into a through hole provided on a substrate, whereby the connector is fixed to the substrate.

[0003] A better electronic device is desired.

[0004] One aspect of this disclosure is an electronic device including a first circuit board having a first main surface and a second main surface that is the back surface of the first main surface, a first slot member that contacts the first main surface and guides a second circuit board on the first main surface, and a second slot member that contacts the second main surface and guides a third circuit board on the second main surface.

[0005] FIG. 1 is a perspective view of an electronic device according to an embodiment. FIG. 2 is a view showing the inside of the housing of the electronic device shown in FIG. 1. FIG. 3 is an exploded perspective view of a control unit provided in the electronic device of FIG. 2. FIG. 4 is an exploded perspective view of the control unit of FIG. 3. FIG. 5 is a perspective view showing a slot member, a second circuit board, and a circuit board inserted and removed from the slot member provided in the control unit of FIG. 4. FIG. 6 is a perspective view showing a notch-shaped locking portion and an engaging claw. FIG. 7 is a plan view showing the notch-shaped locking portion and the engaging claw of FIG. 6. FIG. 8 is a plan view showing a hole-shaped locking portion according to Modification 1.

[0006] The electronic device may include a housing and a plurality of circuit boards. The housing houses the plurality of circuit boards. The plurality of circuit boards may be connected by connectors. In this case, there may be a mode in which two circuit boards are vertically connected (T-shaped connection, L-shaped connection). Due to the stress generated when another circuit board is inserted into and removed from one circuit board, there is a risk that the one circuit board may bend. There is a concern that the circuits (circuit components) mounted on the bent circuit board may be deformed or damaged. Based on the above preliminary explanation, an embodiment will be described below.

[0007] (One Embodiment) Figure 1 is a perspective view of an electronic device 10 according to one embodiment. A top perspective view of the electronic device 10 is shown in Figure 1. Figure 2 is a diagram showing the inside of the housing 12 of the electronic device 10 shown in Figure 1.

[0008] The electronic device 10 is, for example, a control device for controlling industrial machinery. The industrial machinery is, for example, a robot, but is not limited to that. The electronic device 10 comprises a housing 12 and a plurality of electronic units 14 (control unit 54, power supply unit 56).

[0009] The housing 12 is a structure having a housing space 16. The housing space 16 is a space formed inside the housing 12. The housing 12 can accommodate a plurality of electronic units 14 in the housing space 16.

[0010] The housing 12 has pre-formed openings 34 for inserting and removing the circuit board 36. Multiple openings 34 (341, 342) are formed in the housing 12. The locations of the multiple openings 34 can be appropriately determined according to the locations of the multiple slot members 70 (described later), but for example, openings 34 are formed in both the front part 28 and the rear part 30 of the housing. More specifically, for example, a first opening 341 is formed in the front part 28 of the housing. A second opening 342 is formed in the rear part 30 of the housing. The front part 28 is the front of the housing 12. The rear part 30 is the back of the housing 12. The openings 34 may be covered by faceplates 38. The faceplates 38 may be provided on the circuit board 36 that is inserted and removed through the openings 34. In that case, the openings 34 are closed by the faceplates 38 when the circuit board 36 is inserted into the slot members 70 (described later) through the openings 34.

[0011] The housing 12 may include an external connection interface 32 and an air supply unit 42. The external connection interface 32 includes various interfaces for connecting external devices to a plurality of electronic units 14 housed in the housing space 16. For example, an external power supply connection unit 321 is included in the external connection interface 32, but is not limited to this. An external power supply, which is a power supply provided outside the electronic device 10, is connected to the external power supply connection unit 321. The external power supply is connected to a power supply unit 56, which will be described later, via the external power supply connection unit 321. The air supply unit 42 may include one or more air intake ports that communicate with the housing space 16. The external connection interface 32 and the air supply unit 42 are, for example, located in the front part 28 of the housing, but are not limited to this.

[0012] Within the enclosure space 16, multiple electronic units 14 may be adjacent to each other. For example, as shown in Figure 2, a control unit 54 and a power supply unit 56 may be adjacent to each other within the enclosure space 16. The control unit 54 is an electronic unit 14 (module) that controls industrial machinery. A more detailed explanation of the control unit 54 will be given later.

[0013] The power supply unit 56 is an electronic unit 14 (module) that supplies power to the control unit 54. The power supply unit 56 and the control unit 54 may be connected cablelessly via a connector (not shown). The power supply unit 56 comprises a plurality of power supply circuit boards 36P.

[0014] The multiple power supply circuit boards 36P are a group of boards on which power supply circuits are mounted. These power supply circuits may include current noise filters, transformer circuits, and the like. The multiple power supply circuit boards 36P may be connected cablelessly, for example, by connectors (not shown). The power supply unit 56 may further include connecting members 58 for appropriately connecting the multiple power supply circuit boards 36P to each other.

[0015] Figure 3 is an exploded perspective view of the control unit 54 provided in the electronic device 10 of Figure 2. A downward perspective view of the control unit 54 is shown in Figure 3. The connecting member 58 (described later) is not shown in Figure 3. Figure 4 is an exploded perspective view of the control unit 54 of Figure 3. The amplifier board 36A (described later) is not shown in Figure 4.

[0016] The control unit 54 comprises a plurality of circuit boards 36 and a plurality of slot members 70. As shown in Figure 3, a pair of slot members 70 may be provided in the control unit 54. The plurality of circuit boards 36 include the circuit board (bridge board) 361 and the circuit board (main board) 364 described below. The plurality of circuit boards 36 may further include an amplifier board 36A. Similar to the power supply unit 56, the control unit 54 may include connecting members 58 for appropriately connecting the plurality of circuit boards 36 (see also Figure 2).

[0017] An electronic circuit (not shown) is mounted on the circuit board 364. This electronic circuit may form a control circuit for controlling industrial machinery. This control circuit may include, for example, a processor, memory, etc. The circuit board 364 is also provided with a board connector 72. The board connector 72 is located on the main surface 364Sa of the circuit board 364.

[0018] The circuit board 361 includes a plurality of relay connectors 74. Each of the plurality of relay connectors 74 is a connector for connecting another circuit board 36 to the circuit board 361 without cables. The plurality of relay connectors 74 include a first relay connector 741, a second relay connector 742, and a third relay connector 743, which are described below. The plurality of relay connectors 74 may further include a fourth relay connector 744.

[0019] The first relay connector 741 is a relay connector 74 connected to the board connector 72 described above. The first relay connector 741 is connected to the board connector 72 without cables. By connecting the first relay connector 741 and the board connector 72, the circuit board 361 is erected on the circuit board 364.

[0020] As shown in Figure 4, the second relay connector 742 is located on the main surface 361Sa of the circuit board 361. In contrast, the third relay connector 743 is located on the main surface 361Sb, which is the back surface of the main surface 361Sa.

[0021] The fourth relay connector 744 is a relay connector 74 connected to the amplifier board 36A. In relation to the fourth relay connector 744, the amplifier board 36A is provided with an amplifier board connector 76 that can be connected to the fourth relay connector 744 (see also Figure 3). The fourth relay connector 744 can be connected to an amplifier circuit via the amplifier board connector 76. The amplifier circuit is a circuit (not shown) mounted on the amplifier board 36A. The amplifier circuit supplies drive current to the drive system of an industrial machine. The drive system of an industrial machine includes, for example, a motor provided in the industrial machine. A control circuit (processor) mounted on the circuit board 364 can control the amplifier circuit via the fourth relay connector 744 and the amplifier board connector 76.

[0022] In the following description, one of the pair of slot members 70 will also be referred to as the first slot member 701. In the following description, the other of the pair of slot members 70 will also be referred to as the second slot member 702. The first slot member 701 and the second slot member 702 are arranged to sandwich the circuit board 361. More specifically, the first slot member 701 is arranged to face the main surface 361Sa of the circuit board 361. The first slot member 701 is in contact with the main surface 361Sa. In contrast, the second slot member 702 is arranged to face the main surface 361Sb of the circuit board 361. The second slot member 702 is in contact with the main surface 361Sb.

[0023] Figure 5 is a perspective view showing the slot member 70 (701), the circuit board 361, and the circuit board 36 (362) that is inserted into and removed from the first slot member 701, all of which are provided in the control unit 54 of Figure 4.

[0024] Each of the pair of slot members 70 (the first slot member 701 and the second slot member 702) is provided with a guide member 78. The guide member 78 is an insulating member that forms a slot from which the circuit board 36 can be inserted and removed. For example, a roughly rectangular tubular member made of resin is used as the guide member 78, but is not limited to this. The guide member 78 is provided with a guide rail 80 that guides the circuit board 36 toward the circuit board 361.

[0025] The guide member 78 of the first slot member 701 guides the circuit board 362 to the second relay connector 742 disposed on the main surface 361Sa. The circuit board 362 can be inserted into the guide member 78 of the first slot member 701 through one of the multiple openings 34 of the housing 12 described above (the first opening 341). In this case, the direction from the first opening 341 toward the first slot member 701 coincides with the direction from the first opening 341 toward the second relay connector 742. Electronic circuits (not shown) are mounted on the circuit board 362. These electronic circuits form, for example, part of the control circuit described above, but are not limited to this. The electronic circuits mounted on the circuit board 362 may be, for example, additional circuits for implementing additional functions in the electronic device 10 as needed to provide convenience to the user.

[0026] Circuit board 362 is equipped with a board connector 362C. The board connector 362C is connected cablelessly to a second relay connector 742 provided on circuit board 361. This connects the electronic circuits mounted on circuit board 362 with the electronic circuits mounted on circuit board 364. Circuit board 362 may also be equipped with a faceplate 38.

[0027] The guide member 78 of the second slot member 702 guides the circuit board 363 to the third relay connector 743 disposed on the main surface 361Sb. The circuit board 363 can be inserted into the guide member 78 of the second slot member 702 through one of the multiple openings 34 of the housing 12 described above (the second opening 342). In this case, the direction from the second opening 342 toward the second slot member 702 coincides with the direction from the second opening 342 toward the third relay connector 743. An electronic circuit (not shown) is mounted on the circuit board 363. This electronic circuit may form part of the control circuit described above, or it may be an additional circuit for implementing the additional functions described above in the electronic device 10 as needed.

[0028] Circuit board 363 is equipped with a board connector 363C. The board connector 363C is connected cablelessly to a fourth relay connector 744 provided on circuit board 361 (see also Figure 4). This connects the electronic circuit mounted on circuit board 363 with the control circuit mounted on circuit board 364. Similar to circuit board 362, circuit board 363 may also be equipped with a faceplate 38.

[0029] Each of the pair of slot members 70 (a first slot member 701 and a second slot member 702) further comprises a fixing portion 81. Each of the pair of slot members 70 may have at least one fixing portion 81. The fixing portion 81 has a structure that can fix the slot member 70 to the circuit board 364. For example, the fixing portion 81 has an engaging claw 82. In this embodiment, for illustrative purposes, a case is described in which each of the pair of slot members 70 comprises a plurality of engaging claws 82 (a plurality of fixing portions 81). The plurality of engaging claws 82 can be appropriately arranged on the slot member 70 as needed. Each of the plurality of engaging claws 82 comprises an arm portion 84 and a hook portion 86. The arm portion 84 extends from the guide member 78 toward the circuit board 364. The arm portion 84 is preferably flexible. The hook portion 86 protrudes from the arm portion 84 along a direction intersecting the longitudinal direction of the arm portion 84. The multiple engaging claws 82 engage with each of the multiple locking portions 88 that are pre-formed on the circuit board 364. This allows the slot member 70 to be installed on the circuit board 364. A more detailed explanation of the multiple locking portions 88 will be given later.

[0030] One of the pair of slot members 70 is provided with a projection 90 that protrudes toward the circuit board 361. In contrast, the other slot member 70 of the pair of slot members 70 has a pre-formed fitting hole 92 that can be fitted into the projection 90. For illustrative purposes, Figure 4 shows a case in which the guide member 78 of the first slot member 701 is provided with a projection 90, and the guide member 78 of the second slot member 702 has a fitting hole 92 formed therein. The projection 90 can be fitted into the fitting hole 92 via the circuit board 361 by being inserted through a through hole 94 that is pre-drilled in the circuit board 361. Also, as shown in Figure 4, multiple projections 90 may be provided on the first slot member 701. In that case, multiple fitting holes 92 that can be fitted into each of the multiple projections 90 are pre-formed on the second slot member 702.

[0031] As described above, the circuit board 364 has a plurality of locking portions 88 pre-formed on it. These plurality of locking portions 88 may include at least one of notched locking portions 88N and hole-shaped locking portions 88H. The notched locking portion 88N is a locking portion 88 that has a shape of a cutout in the outer edge (edge ​​364E) of the circuit board 364. A plurality of notched locking portions 88N may be formed on the circuit board 364. In contrast, the hole-shaped locking portion 88H is a hole-shaped locking portion 88 that is drilled in the circuit board 364. A plurality of hole-shaped locking portions 88H may be formed on the circuit board 364.

[0032] Figure 6 is a perspective view showing the notched locking portion 88N (88Na) and the engaging claw 82. Figure 7 is a plan view showing the notched locking portion 88Na and the engaging claw 82 of Figure 6.

[0033] At least one notched locking portion 88N (notched locking portion 88Na) may have a first partial notch 96, a second partial notch 98, a third partial notch 100, and a locking claw 102 (102A).

[0034] The first partial notch 96 is a notch that extends from the edge 364E of the circuit board 364 in a direction intersecting the extending direction of the edge 364E. The extending direction of the edge 364E in which the first partial notch 96 shown in Figures 6 and 7 is formed coincides with the first direction D1 shown in Figures 6 and 7. The first direction D1 also coincides with the direction from the notched locking portion 88Na toward the circuit board 361 (board connector 72). Furthermore, the direction intersecting the extending direction of the edge 364E in which the first partial notch 96 shown in Figures 6 and 7 coincides with the second direction D2 shown in Figures 6 and 7. The second direction D2 may be perpendicular to the first direction D1.

[0035] The second partial notch 98 is a notch that extends from the first partial notch 96 along the aforementioned extension direction (first direction D1). More specifically, the second partial notch 98 is a notch that extends from the first partial notch 96 in the direction opposite to the first direction D1.

[0036] The third partial notch 100 is a notch that extends from the second partial notch 98 toward the edge 364E described above. In other words, the third partial notch 100 is a notch that extends from the second partial notch 98 along the second direction D2. In further other words, the third partial notch 100 is a notch that extends from the second partial notch 98 toward the opposite direction of the second direction D2. The engaging claw 82 provided in the slot member 70 can reach the third partial notch 100 via the first partial notch 96 and the second partial notch 98.

[0037] The locking claw 102A is a part (piece) of the circuit board 364 that is cut out by the first partial notch 96, the second partial notch 98, and the third partial notch 100. The shape of the locking claw 102A is defined by the first partial notch 96, the second partial notch 98, and the third partial notch 100. The locking claw 102A locks the engaging claw 82 that has reached the third partial notch 100. More specifically, the locking claw 102A prevents the engaging claw 82 that has reached the third partial notch 100 from returning to the second partial notch 98 or the first partial notch 96. In this way, the locking claw 102A prevents the locking state between the engaging claw 82 and the notched locking portion 88Na from being unintentionally released. More specifically, the locking claw 102A maintains a good state in which the hook portion 86 of the engaging claw 82 is hooked onto the main surface 364Sb, which is the back surface of the main surface 364Sa of the circuit board 364.

[0038] It is preferable that a chamfered portion 104 (first chamfered portion 1041) is formed on the locking claw 102A. The first chamfered portion 1041 is a chamfered portion that forms a surface that guides the engaging claw 82 provided on the slot member 70 from the first partial notch 96 to the second partial notch 98. The user can easily move the engaging claw 82 from the first partial notch 96 to the second partial notch 98 by sliding the engaging claw 82 along the first chamfered portion 1041.

[0039] In relation to the first chamfered portion 1041, it is preferable that a chamfered portion 104 (second chamfered portion 1042) is also formed on the arm portion 84 of the engaging claw 82 provided on the slot member 70. The second chamfered portion 1042 faces the first chamfered portion 1041 when the engaging claw 82 is guided along the first chamfered portion 1041.

[0040] At least one notched locking portion 88N (notched locking portion 88Nb) may be a simple, substantially rectangular notch. A chamfered portion 104 may be formed on the edge 364E of the circuit board 364 in the direction from the circuit board 361 toward the notched locking portion 88Nb (see also Figures 2 to 4).

[0041] The electronic device 10 described above produces the following effects, for example.

[0042] According to this embodiment, the electronic device 10 includes a circuit board 361 (first circuit board), a first slot member 701, and a second slot member 702. The first slot member 701 is in contact with the main surface 361Sa (first main surface) of the circuit board 361. The second slot member 702 is in contact with the main surface 361Sb (second main surface) of the circuit board 361.

[0043] When the circuit board 362 is connected to the circuit board 361 through the first slot member 701, the second slot member 702 functions as a support member that supports the circuit board 361 from behind. That is, when the circuit board 362 is connected to the circuit board 361 wirelessly, the circuit board 362 is pressed against the circuit board 361, and thus stress may be applied to the circuit board 361. In that case, the second slot member 702 supports the circuit board 361 to suppress the circuit board 361 from being bent by the stress applied to the circuit board 361. Further, when the circuit board 363 is connected to the circuit board 361 wirelessly, the first slot member 701 functions as a support member that supports the circuit board 361 from behind. Therefore, the first slot member 701 suppresses the circuit board 361 from being bent when the circuit board 363 is connected to the circuit board 361 through the second slot member 702.

[0044] Further, when the circuit board 362 is removed from the circuit board 361, the first slot member 701 suppresses the circuit board 361 from being bent in the extraction direction of the circuit board 3, Similarly, when the circuit board 363 is removed from the circuit board 361, the second slot member 702 suppresses the circuit board 361 from being bent in the extraction direction of the circuit board 363. Thus, each of the plurality of slot members 70 suppresses the circuit board 361 from being bent not only when the circuit boards 362 and 363 are connected to the circuit board 361 but also when the circuit boards 362 and 363 are removed from the circuit board 361.

[0045] Moreover, according to the present embodiment, circuit boards 36 (362, 363) are connected to each of the main surfaces 361Sa and 361Sb. As a result, the number of connectors (relay connectors 74) to be disposed on one main surface (for example, the main surface 361Sa) of the circuit board 361 can be suppressed. Consequently, the area of the one main surface can be made smaller than in a mode where both the circuit board 362 and the circuit board 363 are connected to the one main surface of the circuit board 361. Therefore, according to the present embodiment, an electronic device 10 is provided that can dispose more circuit boards 36 while suppressing the bending of the circuit board 361 and effectively utilizing the housing space 16.

[0046] Each of the plurality of slot members 70 includes a fixing portion 81 that can be fixed to a circuit board 364 (the fourth circuit board). The slot member 70 is fixed to the circuit board 364 by the fixing portion 81. The fixing portion 81 may have an engaging claw 82. In this case, the user can easily attach and detach the slot member 70 with respect to the circuit board 364. Therefore, the electronic device 10 is excellent in terms of assemblability, disassemblability, etc.

[0047] Moreover, since the slot member 70 is attached to the circuit board 364 by a plurality of engaging claws 82, the fixing of the slot member 70 to the circuit board 364 can be realized without using a fastening member such as a screw. Therefore, an increase in the number (number of parts) of the fastening members provided in the electronic device 10 can be suppressed.

[0048] Each of the plurality of slot members 70 includes a guide rail 80 that can support a circuit board 36 (362, 363). In a state where the slot member 70 and the circuit board 361 are disposed on the circuit board 364, the guide rail 80 of the slot member 70 extends toward the circuit board 361. The guide rail 80 guides another circuit board 36 (362, 363) to the circuit board 361. Thereby, the user can easily connect or disconnect the circuit board 362 to / from the circuit board 361.

[0049] Furthermore, according to this embodiment, one of the pair of slot members 70 that clamp the circuit board 361 (the first slot member 701) is provided with a projection 90. The relative position between the first slot member 701 and the circuit board 361 is determined by inserting the projection 90 into the insertion hole 94 of the circuit board 361. In other words, the first slot member 701 is easily and effectively positioned by inserting the projection 90 into the insertion hole 94. Also, the other of the pair of slot members 70 (the second slot member 702) has a fitting hole 92 pre-formed therein. The fitting hole 92 engages with the projection 90 through which the circuit board 361 is inserted. This determines the relative position between the second slot member 702, the first slot member 701, and the circuit board 361. In other words, the second slot member 702 is easily and effectively positioned by the engagement of the projection 90 through which the circuit board 361 is inserted with the fitting hole 92. Furthermore, the engagement of the projection 90 through which the circuit board 361 is inserted with the fitting hole 92 allows the circuit board 361 to be more firmly held by the pair of slot members 70.

[0050] The housing 12 can accommodate a plurality of circuit boards 36 and a plurality of slot members 70. The housing 12 has a plurality of openings 34 pre-formed in it. The user can insert and remove a circuit board 362 into the first slot member 701 through the first opening 341 of the plurality of openings 34. The user can also insert and remove a circuit board 363 into the second slot member 702 through the second opening 342 of the plurality of openings 34. In this case, the user does not need to disassemble the housing 12 just to connect a circuit board 362 or a circuit board 363 to a circuit board 361. Therefore, the user can easily remove a circuit board 362 or a circuit board 363 from the electronic device 10 and perform maintenance on these circuit boards 36 (362, 363). In other words, according to this embodiment, the electronic device 10 is good in terms of ease of maintenance. Furthermore, if, for example, circuit board 362 or circuit board 363 is an optional board for realizing additional functions of the electronic device 10, the user can easily replace the circuit board 36 mounted on the electronic device 10 as an optional board as needed. In other words, according to this embodiment, the electronic device 10 is also good in terms of ease of function customization.

[0051] At least one of the circuit boards 361, 362, and 363 constitutes part of a control unit 54 that controls industrial machinery such as robots. As a result, the electronic device 10 can function as a control device for controlling industrial machinery.

[0052] At least one of the multiple locking portions 88 may be a notched locking portion 88N. This ensures that the engaging claws 82 of the slot member 70, which is positioned near the edge 364E of the circuit board 364, are securely locked to the circuit board 364 by the notched locking portion 88N.

[0053] The notched locking portion 88N may have a first partial notch 96, a second partial notch 98, a third partial notch 100, and a locking claw 102A. This ensures that the engaging claw 82 provided on the slot member 70 is securely locked to the notched locking portion 88N.

[0054] A first chamfered portion 1041 may be formed on the locking claw 102A. This allows the user to easily move the engaging claw 82 along the first chamfered portion 1041 from the first partial notch 96 to the second partial notch 98.

[0055] As described above, the projection 90 is inserted into the pre-formed insertion hole 94 in the circuit board 361 by moving the slot member 70, which is provided with the projection 90, toward the circuit board 361. In this respect, according to this embodiment, the direction from the first partial notch 96 toward the third partial notch 100 coincides with the first direction D1. The first direction D1 is the direction from the slot member 70 toward the circuit board 361. The process by which the slot member 70 is locked into the notched locking portion 88Na includes the step of moving the slot member 70 toward the third partial notch 100. That is, the process by which the slot member 70 is locked into the notched locking portion 88Na includes the step of moving the slot member 70 toward the circuit board 361. In this case, the user can achieve both locking the slot member 70 into the notched locking portion 88Na and inserting the projection 90 provided on the slot member 70 into the insertion hole 94 with a single simple operation of moving the slot member 70 along the first direction D1.

[0056] A second chamfered portion 1042 may be formed on the arm portion 84 of the engaging claw 82. This allows the user to slide the second chamfered portion 1042 along the first chamfered portion 1041. As a result, the user can more easily move the engaging claw 82 from the first partial notch 96 to the second partial notch 98. Moreover, according to this embodiment, the arm portion 84 may be flexible. This allows the arm portion 84 to move from the first partial notch 96 to the second partial notch 98 while bending along the first chamfered portion 1041.

[0057] One embodiment may be modified as described below. In the following description, explanations that overlap with the first embodiment will be omitted as appropriate.

[0058] (Modification 1) Figure 8 is a plan view showing the perforated locking portion 88H (perforated locking portion 88Ha) according to Modification 1.

[0059] The perforated locking portion 88Ha has a first partial hole 106, a second partial hole 108, a third partial hole 110, and a locking claw 102 (locking claw 102B).

[0060] The first partial hole 106 is a hole that extends in a direction (second direction D2) that intersects the direction (first direction D1) toward the circuit board 361 (board connector 72) from the hole-shaped locking portion 88Ha (see also one embodiment). The first direction D1 can be specified according to each of the multiple locking portions 88. For example, when the circuit board 364 is provided with multiple slot members 70, the slot members 70 locked by the notched locking portion 88Na in Figures 6 and 7 may be different from the slot members 70 locked by the hole-shaped locking portion 88Ha in Figure 8. In that case, the first direction D1 in Figures 6 and 7, specified according to the notched locking portion 88Na, and the first direction D1 in Figure 8, specified according to the hole-shaped locking portion 88Ha, may be different.

[0061] The second partial hole 108 is a hole that extends from the first partial hole 106 in a direction intersecting the extending direction of the first partial hole 106. In other words, the second partial hole 108 is a hole that extends from the first partial hole 106 along the first direction D1. More specifically, the second partial hole 108 extends from the first partial hole 106 in the direction opposite to the first direction D1.

[0062] The third partial hole 110 is a hole that extends from the second partial hole 108 along the extending direction of the first partial hole 106. In other words, the third partial hole 110 is a hole that extends from the second partial hole 108 along the second direction D2. More specifically, the third partial hole 110 extends from the second partial hole 108 in the opposite direction to the second direction D2. Therefore, the engaging claw 82 provided in the slot member 70 can reach the third partial hole 110 through the first partial hole 106 and the second partial hole 108.

[0063] The locking claw 102B is a part (a portion) of the circuit board 364 defined by the first partial hole 106, the second partial hole 108, and the third partial hole 110. The locking claw 102B locks the engaging claw 82 that has reached the third partial hole 110. More specifically, the locking claw 102B prevents the engaging claw 82 that has reached the third partial hole 110 from returning to the second partial hole 108 or the first partial hole 106. In this way, the locking claw 102B prevents the locking state between the engaging claw 82 and the hole-shaped locking portion 88H from being unintentionally released.

[0064] Preferably, a chamfered portion 104 (third chamfered portion 1043) is formed on the locking claw 102B. The third chamfered portion 1043 guides the engaging claw 82 provided in the slot member 70 from the first partial hole 106 to the second partial hole 108. The user can easily move the engaging claw 82 from the first partial hole 106 to the second partial hole 108 by sliding the engaging claw 82 along the third chamfered portion 1043.

[0065] When the engaging claw 82 is guided along the third chamfered portion 1043, the third chamfered portion 1043 may face the second chamfered portion 1042 formed on the arm portion 84 of the engaging claw 82. The user can more easily move the engaging claw 82 from the first partial hole 106 to the second partial hole 108 by sliding the second chamfered portion 1042 along the third chamfered portion 1043.

[0066] (Modification 2) The shape of the locking portion 88 formed on the circuit board 364 is not limited to one embodiment. For example, the shape of the notched locking portion 88N may be modified as appropriate. Similarly, the shape of the hole-shaped locking portion 88H may be modified as appropriate.

[0067] Furthermore, the shape of the engaging claw 82 provided on the slot member 70 is not limited to one embodiment.

[0068] (Modification 3) Each of the pair of slot members 70 (first slot member 701, second slot member 702) may have both a projection 90 and a fitting hole 92. In this case, the projection 90 provided on the first slot member 701 fits into the fitting hole 92 formed on the second slot member 702 via the circuit board 361. Also, the projection 90 provided on the second slot member 702 fits into the fitting hole 92 formed on the first slot member 701 via the circuit board 361.

[0069] (Combinations of multiple variations) The above-mentioned variations may be combined as appropriate, as long as they do not contradict each other.

[0070] According to the above-described embodiment and modified example, the electronic device (10) can suppress bending of one circuit board (361) when other circuit boards (362, 363) are connected to the main surface (361Sa, 361Sb) of the first circuit board (361).

[0071] The following additional information is disclosed regarding the embodiments and modifications described above.

[0072] (Note 1) The electronic device (10) according to the present disclosure is an electronic device comprising: a first circuit board (361) having a first main surface (361Sa) and a second main surface (361Sb) which is the back surface of the first main surface; a first slot member (701) that is in contact with the first main surface and guides a second circuit board (362) onto the first main surface; and a second slot member (702) that is in contact with the second main surface and guides a third circuit board (363) onto the second main surface.

[0073] (Note 2) The electronic device described in Note 1 may further include a fourth circuit board (364) having a main surface (364Sa) on which the first circuit board is erected, and each of the first slot member and the second slot member is provided with at least one fixing portion (81) that can be fixed to the fourth circuit board.

[0074] (Note 3) An electronic device as described in Note 1 or 2 may also be an electronic device in which each of the first slot member and the second slot member is provided with a guide rail (80) that extends toward the first circuit board and is capable of supporting the circuit board (36).

[0075] (Note 4) An electronic device as described in any one of Notes 1 to 3, wherein the first slot member and the second slot member support the first circuit board.

[0076] (Note 5) An electronic device as described in any one of Notes 1 to 4, wherein the first circuit board has a through hole (94) formed therein, which is a hole that penetrates the first circuit board from the first main surface to the second main surface, and a projection (90) that protrudes toward the through hole is provided on one of the first slot member and the second slot member, and a fitting hole (92) that fits into the projection through which the through hole is inserted is formed on the other of the first slot member and the second slot member.

[0077] (Note 6) An electronic device as described in any one of Notes 1 to 5, comprising a housing (12) housing the first circuit board, the first slot member, and the second slot member, wherein the housing has a first opening (341) for inserting and removing the second circuit board into the first slot member and a second opening (342) for inserting and removing the third circuit board into the second slot member.

[0078] (Note 7) An electronic device described in any one of Notes 1 to 6, wherein at least one of the first circuit board, the second circuit board, and the third circuit board constitutes part of a control unit (54) that controls an industrial machine.

[0079] (Note 8) The electronic device described in Note 7, where the industrial machine is a robot, may also be an electronic device.

[0080] While this disclosure has been described in detail, it is not limited to the individual embodiments described above. These embodiments can be added, replaced, modified, partially deleted, etc., in any way that does not depart from the gist of this disclosure or from the intent of this disclosure derived from the claims and their equivalents. These embodiments can also be implemented in combination. For example, the order of operations and processes in the embodiments described above are given as examples only and are not limited thereto. The same applies when numerical values ​​or mathematical formulas are used in the description of the embodiments described above.

[0081] 10...Electronic device 12...Housing 36...Circuit board 54...Control unit 80...Guide rail 81...Fixing part 90...Protrusion 92...Matching hole 94...Through hole 341...First opening 342...Second opening 361...First circuit board 361Sa...First main surface 361Sb...Second main surface 362...Second circuit board 363...Third circuit board 364...Fourth circuit board 364Sa...Main surface 701...First slot member 702...Second slot member

Claims

1. An electronic device comprising: a first circuit board having a first main surface and a second main surface which is the back surface of the first main surface; a first slot member in contact with the first main surface and guiding the second circuit board onto the first main surface; and a second slot member in contact with the second main surface and guiding the third circuit board onto the second main surface.

2. An electronic device according to claim 1, further comprising a fourth circuit board having a main surface on which the first circuit board is erected, wherein each of the first slot member and the second slot member is provided with at least one fixing portion that can be fixed to the fourth circuit board.

3. An electronic device according to claim 1 or 2, wherein each of the first slot member and the second slot member is provided with a guide rail that extends toward the first circuit board and is capable of supporting the circuit board.

4. An electronic device according to any one of claims 1 to 3, wherein the first slot member and the second slot member support the first circuit board.

5. An electronic device according to any one of claims 1 to 4, wherein the first circuit board has a through hole formed therein, which is a hole penetrating the first circuit board from the first main surface to the second main surface, a projection projecting toward the through hole is provided on one of the first slot member and the second slot member, and a fitting hole is formed on the other of the first slot member and the second slot member, which is a hole that fits into the projection through which the through hole is inserted.

6. An electronic device according to any one of claims 1 to 5, comprising a housing for housing the first circuit board, the first slot member, and the second slot member, wherein the housing is formed with a first opening for inserting and removing the second circuit board from the first slot member and a second opening for inserting and removing the third circuit board from the second slot member.

7. An electronic device according to any one of claims 1 to 6, wherein at least one of the first circuit board, the second circuit board, and the third circuit board constitutes part of a control unit for controlling an industrial machine.

8. An electronic device according to claim 7, wherein the industrial machine is a robot.

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