Electronic device and method for removing connector

Abstract

To provide an electronic device which can contribute to improving the operability of removing a blade from a rack.SOLUTION: The electronic device includes: a blade in which a front plate and a first connector are fixed to an electronic substrate; a rack to which a second connector electrically connected to the first connector is fixed; and a screw for fixing the blade to the rack. The screw has a stop wheel equipped to a male screw part. The front surface plate has a penetration hole in which the male screw part is inserted and is inserted between the head part and the stop wheel of the screw. To the rack, an inner plate having a screw hole engaged with the male screw part is fixed. In the top part, the screw is inserted into the screw hole so that the front plate is pressed against the inside of the rack and the first connector is inserted in the second connector. In the stop wheel, the screw is loosened to be removed from the screw hole so that the front plate is pressed against the outside of the rack and the first connector is removed from the second connector.SELECTED DRAWING: Figure 6

Description

Technical Field

[0001] The present invention relates to an electronic device and a method for attaching and detaching a connector.

Background Art

[0002] There is an electronic device (electronic equipment) capable of fixing a blade (circuit unit) in a slot (opening) of a rack (housing), attaching (connecting) a connector on the back of the blade to a connector in the rack, and screwing a screw through a through-hole of a plate fixed to the blade into a screw hole of a plate fixed to the rack to fix the blade to the rack. In such an electronic device, since a connector with many cores and a strong fitting force is likely to be selected, in Patent Document 1, a screw hole is provided at a position different from the through-hole in the plate fixed to the blade. When removing the blade from the rack, the screw fixing the blade to the rack is first removed, and then the screw is screwed into the screw hole of the plate fixed to the blade, so that the tip of the screw presses against a surface other than the screw hole in the plate fixed to the rack, and the blade is relatively moved with respect to the rack to remove (disconnect) the connector of the blade from the connector in the rack.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] The following analysis is provided by the inventor of the present application.

[0005] However, in the electronic device of Patent Document 1, when removing the blade from the rack, the screw must be completely removed from the blade and the rack, so the number of working steps increases and there is a possibility of dropping and losing the screw, making it difficult to improve workability.

[0006] The main object of the present invention is to provide an electronic device and a connector attachment / detachment method that can contribute to improving workability when removing a blade from a rack.

Means for Solving the Problems

[0007] An electronic device according to a first aspect includes a blade in which a front plate is fixed to the front surface of an electronic substrate and a first connector is fixed to the electronic substrate, a rack having at least one slot for accommodating the blade and a second connector fixed thereto that is conductively connected to the first connector when the blade is accommodated therein, and a screw for fixing the blade to the rack. The screw includes a male screw portion extending axially from a head, and a retaining ring is attached to the male screw portion so as not to be axially movable. The front plate includes a through hole through which the male screw portion is inserted, and is sandwiched between the head and the retaining ring at a peripheral portion of the through hole. The rack has an inner plate fixed thereto that includes a screw hole that engages with the male screw portion inserted through the through hole when the blade is accommodated in the slot. The head is configured to electrically connect and mechanically insert the first connector to the second connector by screwing the screw into the screw hole and pressing the front-side peripheral portion of the through hole of the front plate against the inside of the rack. The retaining ring is configured to electrically disconnect and mechanically remove the first connector from the second connector by loosening the screw to remove it from the screw hole and pressing the back-side peripheral portion of the through hole of the front plate against the outside of the rack.

[0008] The connector attaching / detaching method according to the second perspective is such that a front plate is fixed to the front surface of an electronic substrate, and a blade to which a first connector is fixed is provided on the electronic substrate, and a rack having at least one slot for housing the blade and to which a second connector that is conductively connected to the first connector when the blade is housed is fixed, and a screw for fixing the blade to the rack. The connector attaching / detaching method for attaching / detaching the first connector and the second connector in the electronic device includes: the screw having a male screw portion extending axially from a head, and a retaining ring being mounted on the male screw portion so as not to be axially movable; the front plate having a through hole through which the male screw portion is inserted, and being sandwiched between the head and the retaining ring at the peripheral portion of the through hole; an inner plate having a screw hole that engages with the male screw portion inserted through the through hole when the blade is housed in the slot being fixed to the rack. The connector attaching / detaching method includes screwing the screw into the screw hole to press the head against the inner peripheral portion on the front side of the through hole of the front plate inside the rack, thereby electrically connecting the first connector to the second connector and mechanically inserting it; and loosening the screw to remove it from the screw hole to press the retaining ring against the outer peripheral portion on the back side of the through hole of the front plate outside the rack, thereby electrically disconnecting the first connector from the second connector and mechanically removing it.

Advantages of the Invention

[0009] According to the first and second perspectives, it is possible to contribute to improving the workability when removing the blade from the rack.

Brief Description of the Drawings

[0010]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Embodiments for Carrying Out the Invention

[0011] Hereinafter, the embodiments will be described with reference to the drawings. In the present application, when reference numerals are attached to the drawings, they are solely for the purpose of assisting understanding and are not intended to be limited to the illustrated embodiments. Also, the following embodiments are merely examples and do not limit the present invention.

[0012] [Embodiment 1] The electronic device according to Embodiment 1 will be described with reference to the drawings. FIG. 1 is a front view schematically showing an example of the configuration of an electronic device according to the present disclosure. FIG. 2 is a cross-sectional view when fixing a blade to a rack, corresponding to the section between X-X' in FIG. 1 which schematically shows an example of the configuration of an electronic device according to the present disclosure. FIG. 3 is a cross-sectional view when removing a blade from a rack, corresponding to the section between X-X' in FIG. 1 which schematically shows an example of the configuration of an electronic device according to the present disclosure. FIG. 4 is a perspective view schematically showing an example of the configuration of a blade in an electronic device according to the present disclosure. FIG. 5 is a (A) plan view and a cross-sectional view between Y-Y' schematically showing an example of the configuration of a blade in an electronic device according to the present disclosure.

[0013] The electronic device 1 is a device that performs a predetermined operation by controlling the flow of electrons and charged particles in a built-in circuit (see FIGS. 1 to 3). The electronic device 1 is configured to be able to detachably accommodate the blade 10 in the slot 30a of the rack 30. The electronic device 1 has a mechanism that makes the connector 13 on the back surface of the blade 10 detachably connected to the connector 36 in the rack 30 by using the screw 20 and the retaining ring 21. The electronic device 1 inserts the screw 20 through the through hole 11a of the front plate 11 of the blade 10 and screws it into the screw hole 32a of the inner plate 32 of the rack 30 (for example, rotates clockwise), so that the head 20a of the screw 20 presses the front-side peripheral edge of the through hole 11a of the front plate 11 against the inside of the rack 30. By using the axial force, the blade 10 is mechanically fixed to the rack 30, and the connector 13 of the blade 10 is electrically connected to the connector 36 of the rack 30 and mechanically inserted (see FIG. 2). The electronic device 1 loosens the screw 20 so as to remove it from the screw hole 32a of the inner plate 32 of the rack 30 (for example, rotates counterclockwise), so that the retaining ring 21 fixedly mounted (fixed) axially immovable with respect to the screw 20 presses the back-side peripheral edge of the through hole 11a of the front plate 11 against the outside of the rack 30. By using the axial force, the blade 10 is mechanically removed from the rack 30, and the connector 13 of the blade 10 is electrically disconnected from the connector 36 of the rack 30 and mechanically removed (see FIG. 3). The electronic device 1 includes the blade 10, the screw 20, the retaining ring 21, and the rack 30.

[0014] The blade 10 is a blade-shaped (elongated shape) electronic unit (see FIGS. 1 to 5). The blade 10 is configured to be accommodated in the slot 30a of the rack 30. As the blade 10, for example, an additional interface board (in FIG. 1, an additional LAN (Local Area Network) board), an additional hard disk, an additional memory board, an additional graphic board, or other additional electronic units can be used. The blade 10 includes a front plate 11, an electronic substrate 12, and a connector 13.

[0015] The front plate 11 is a plate-shaped (laminar) member (see FIGS. 1 to 5). The front plate 11 is configured to close the slot 30a of the rack 30 when the blade 10 is housed in the slot 30a of the rack 30. The front surface of the front plate 11 is configured as the appearance of the electronic device 1. The back surface of the front plate 11 is configured to be fixed to the front-side end of the electronic substrate 12. The front plate 11 has a through hole 11a that penetrates in the detachment direction (slide direction) of the blade 10 at a portion that does not overlap with the electronic substrate 12 at the central portion in the longitudinal direction. The through hole 11a is a through hole configured such that the male screw portion 20b of the screw 20 is inserted therethrough. There may be at least one through hole 11a. The front plate 11 is arranged so as to be sandwiched between the head 20a of the screw 20 and the retaining ring 21 attached to the screw 20 at the peripheral edge of the through hole 11a. The front-side peripheral edge of the through hole 11a of the front plate 11 is screwed (for example, rotated clockwise) so that the screw 20 is screwed into the screw hole 32a of the inner plate 32 of the rack 30, and is pressed against the inside of the rack 30 by the head 20a of the screw 20. The back-side peripheral edge of the through hole 11a of the front plate 11 is loosened (for example, rotated counterclockwise) so as to remove the screw 20 from the screw hole 32a of the inner plate 32 of the rack 30, and is pressed against the outside of the rack 30 by the retaining ring 21 that is mounted (fixed) to be axially immovable with respect to the screw 20.

[0016] The electronic substrate 12 is a circuit board on which various electronic components are mounted (see FIGS. 2 to 5). A connector 13 is mounted (fixed) on the back-side portion of the electronic substrate 12. Note that the electronic substrate 12 may be configured to have a connector portion (not shown) at the back-side end of the electronic substrate 12 itself instead of having an external connector 13. The front-side end of the electronic substrate 12 is fixed to the front plate 11. The left and right ends of the electronic substrate 12 are slidably supported in the front-rear direction by the guide members 34 of the rack 30.

[0017] The connector 13 is a component for detachably connecting and conducting with the connector 36 of the rack 30 (see FIGS. 2 to 5). The connector 13 is mounted (fixed) on the back side portion of the electronic substrate 12. The connector 13 is configured to be electrically connected and mechanically inserted into the connector 36 of the rack 30 when the blade 10 is housed in the slot 30a of the rack 30. The connector 13 is configured to be electrically disconnected and mechanically removed from the connector 36 of the rack 30 when the blade 10 is removed from the slot 30a of the rack 30. Note that the connector 13 may not have a connector portion (not shown) at the end on the back side of the electronic substrate 12 itself.

[0018] The screw 20 is a mechanical component in which a male screw portion 20b extends axially from a flange-shaped head portion 20a (see FIGS. 1 to 5). The head portion 20a is configured such that a tool (for example, a driver, a wrench, etc.) can be attached and rotated on the surface opposite to the male screw portion 20b. The head portion 20a may be configured to be rotatable by pinching it with fingers, and may be, for example, a wing screw, a knurled screw, etc. The male screw portion 20b is configured to be screwed into the screw hole 32a of the inner plate 32 of the rack 30. The head portion 20a is configured to press the front side peripheral edge portion of the through hole 11a of the front plate 11 against the inside of the rack 30 by screwing (for example, rotating clockwise) the male screw portion 20b of the screw 20 into the screw hole 32a of the inner plate 32 of the rack 30. The male screw portion 20b has a groove portion 20c at a predetermined position in the axial direction (thrust direction). The groove portion 20c is a groove-shaped portion recessed in the radial direction. The groove portion 20c is configured such that the retaining ring 21 is mounted (fixed) so as not to be axially movable. Note that the groove portion 20c may not be provided if the retaining ring 21 can be directly fixed to the male screw portion 20b.

[0019] The retaining ring 21 is a ring-shaped member that is non-axially movable and attached (fixed) to the groove portion 20c of the screw 20 (see FIGS. 2 to 5). As the retaining ring 21, for example, an E-ring, a C-ring, a snap ring, a push nut, etc. can be used. The retaining ring 21 may be configured to be directly fixed to the male screw portion 20b. The retaining ring 21 is configured to press the back side peripheral edge portion of the through hole 11a of the front plate 11 outward of the rack 30 by loosening (for example, rotating counterclockwise) the screw 20 so as to remove it from the screw hole 32a of the inner plate 32 of the rack 30.

[0020] The rack 30 is a device for detachably accommodating the blade 10 (see FIGS. 1 to 3). The rack 30 has at least one (four in FIG. 1) slot 30a opened on the front side. The slot 30a accommodates the blade 10 so that it can be inserted into and removed from the rack 30. The rack 30 includes a main body 31, an inner plate 32, a screw 33, a guide member 34, a backboard 35, and a connector 36.

[0021] The main body 31 is a structure for detachably accommodating the blade 10 (see FIGS. 1 to 3). As the main body 31, for example, a housing, a frame, etc. can be used. Inside the main body 31, an inner plate 32, a screw 33, a guide member 34, a backboard 35, and a connector 36 are incorporated.

[0022] The inner plate 32 is a plate-shaped member fixed inside the main body 31 by the screw 33 (see FIGS. 1 to 3). The inner plate 32 is arranged at the longitudinal center of the opening of the slot 30a inside the main body 31. The inner plate 32 has a screw hole 32a that can be screwed with the male screw portion 20b of the screw 20 attached to the blade 10 when the blade 10 is housed in the rack 30.

[0023] The guide member 34 is a member that slidably supports the left and right end portions of the electronic substrate 12 of the blade 10 inserted from the slot 30a in the front-rear direction (see FIGS. 1 to 3). The guide member 34 is fixed inside the main body 31.

[0024] The backboard 35 is a circuit board fixed near the back inside the main body 31 (see FIGS. 1 to 3). The backboard 35 is mounted (fixed) with a connector 36 configured to be electrically connected to and mechanically inserted into the connector 13 of the blade 10 when the blade 10 is housed in the rack. Note that the connector 36 may be fixed to the main body 31.

[0025] When the electronic device 1 configured as described above houses the blade 10 in the rack 30, as shown in FIG. 2, when a screw 20 inserted through the through hole 11a of the front plate 11 of the blade 10 is turned, for example, clockwise using a tool (not shown), the male screw portion 20b of the screw 20 is screwed into the screw hole 32a of the inner plate 32 of the rack 30, and the screw 20 moves inside the rack 30. Along with this, the head 20a of the screw 20 pushes the front-side peripheral edge of the through hole 11a of the front plate 11 of the blade 10 inside the rack 30. Due to the axial force caused by this pushing, the blade 10 is mechanically fixed to the rack 30, and the connector 13 of the blade 10 is electrically connected to and mechanically inserted into the connector 36 inside the rack 30.

[0026] On the other hand, when removing the blade 10 from the rack 30, as shown in FIG. 3, when the screw 20 inserted through the through hole 11a of the front plate 11 of the blade 10 is turned, for example, counterclockwise using a tool (not shown), the male screw portion 20b of the screw 20 is loosened so as to come out of the screw hole 32a of the inner plate 32 of the rack 30, and the screw 20 moves outside the rack 30. Along with this, a retaining ring 21 fixedly mounted (fixed) so as not to be axially movable with respect to the screw 20 presses the back-side peripheral edge of the through hole 11a of the front plate 11 outside the rack 30. Due to the axial force caused by this pressing, the blade 10 is mechanically removed from the rack 30, and the connector 13 of the blade 10 is electrically disconnected from and mechanically removed from the connector 36 of the rack 30.

[0027] According to Form 1, when removing the blade 10 from the rack 30, by simply loosening the screw 20 that fixes the blade 10 to the rack 30, the retaining ring 21 that is axially non-movable (fixed) with respect to the screw 20 presses against the rear peripheral edge of the through hole 11a of the front plate 11 to the outside of the rack 30. At the same time as the blade 10 is mechanically removed from the rack 30, the connector 13 of the blade 10 is electrically disconnected from the connector 36 of the rack 30 and is mechanically removed. Thus, the working process is reduced, the screw 20 is not dropped and lost, and it can contribute to improving the workability when removing the blade 10 from the rack 30.

[0028] Also, according to Form 1, even if multi-core and strong fitting force connectors 13 of the blade 10 and the connector 36 in the rack 30 are selected, when attaching and detaching the blade 10 to and from the rack 30, by turning the screw 20 with the retaining ring 21 using a tool, the connector 13 of the blade 10 and the connector 36 in the rack 30 can be easily attached and detached without applying a load to the fingers.

[0029] Also, according to Form 1, when attaching and detaching the blade 10 to and from the rack 30, by turning the screw 20 with the retaining ring 21 using a tool, the connector 13 of the blade 10 and the connector 36 in the rack 30 can be easily attached and detached. Therefore, there is no need to provide the blade 10 with knobs, handles or other handles that would protrude on the appearance, and the appearance design is not impaired.

[0030] Furthermore, according to Form 1, in order to easily transmit the axial force of the screw 20 to the attachment and detachment of the connectors 13 and 36, by arranging the screw 20 to pass through the through hole 11a at the longitudinal center of the front plate 11, the number of screws 20 per blade 10 can be reduced to reduce costs, and the workability can be improved.

[0031] [Form 2] The electronic device according to Form 2 will be described with reference to the drawings. FIG. 6 is a cross-sectional view (A) when fixing the blade to the rack and (B) when removing the blade from the rack, schematically showing the operation of the second example of the configuration of the electronic device according to the present disclosure.

[0032] The electronic device 1 is a device configured to removably accommodate the blade 10 within the slot 30a of the rack 30. The electronic device 1 includes a blade 10, a rack 30, and screws 20. The blade 10 has a front plate 11 fixed to the front of the electronic substrate 12 and a first connector 13 fixed to the electronic substrate 12. The rack 30 has at least one slot 30a for accommodating the blade 10 and a second connector 36 fixed thereto that is conductively connected to the first connector 13 when the blade 10 is accommodated. The screws 20 are configured to fix the blade 10 to the rack 30.

[0033] The screw 20 includes a male screw portion 20b extending axially from the head 20a, and a retaining ring 21 is mounted on the male screw portion 20b so as not to be axially movable relative thereto. The front plate 11 has a through hole 11a through which the male screw portion 20b is inserted, and is sandwiched between the head 20a and the retaining ring 21 at the peripheral edge of the through hole 11a. An internal plate 32 having a screw hole 32a that mates with the male screw portion 20b inserted through the through hole 11a is fixed to the rack 30 when the blade 10 is accommodated in the slot 30a. The head 20a is configured to press the front peripheral edge of the through hole 11a of the front plate 11 against the inside of the rack 30 by screwing the screw 20 into the screw hole 32a, electrically connecting the first connector 13 to the second connector 36, and mechanically inserting them. The retaining ring 21 is configured to press the rear peripheral edge of the through hole 11a of the front plate 11 against the outside of the rack 30 by loosening the screw 20 to unscrew it from the screw hole 32a, electrically disconnecting the first connector 13 from the second connector 36, and mechanically removing it.

[0034] According to the second embodiment, when removing the blade 10 from the rack 30, by simply loosening the screw 20 that fixes the blade 10 to the rack 30, the retaining ring 21 that is axially non - movable relative to the screw 20 presses against the rear - side peripheral edge of the through - hole 11a of the front plate 11 on the outside of the rack 30. At the same time as the blade 10 is mechanically removed from the rack 30, the connector 13 of the blade 10 is electrically disconnected from the connector 36 of the rack 30 and is mechanically removed. Thus, the number of working steps is reduced, the screw 20 is not dropped and lost, and it can contribute to improving the workability when removing the blade 10 from the rack 30.

[0035] Some or all of the above embodiments can also be described as follows in the appended claims, but are not limited thereto.

[0036] [Appended Claim 1] A front plate is fixed to the front of an electronic substrate, a blade having a first connector fixed to the electronic substrate, a rack having at least one slot for accommodating the blade and having a second connector fixed thereto which is conductively connected to the first connector when the blade is accommodated, a screw for fixing the blade to the rack, and the screw includes a male screw portion extending axially from the head, and a retaining ring is mounted on the male screw portion so as to be axially non - movable relative to the male screw portion, the front plate includes a through - hole through which the male screw portion is inserted, and is sandwiched between the head and the retaining ring at the peripheral edge of the through - hole, an inner plate having a screw hole that engages with the male screw portion inserted through the through - hole is fixed to the rack when the blade is accommodated in the slot, the head is configured to press the front - side peripheral edge of the through - hole of the front plate against the inside of the rack by screwing the screw into the screw hole, thereby electrically connecting the first connector to the second connector and mechanically inserting it. By loosening the screw to remove it from the screw hole, the retaining ring presses the back-side peripheral edge of the through hole of the front plate against the outside of the rack, electrically disconnecting the first connector from the second connector and mechanically removing it. Electronic device. [Appendix 2] By screwing the screw into the screw hole, the head is configured to electrically connect the first connector to the second connector and mechanically insert it, and to mechanically fix the blade to the rack. By loosening the screw to remove it from the screw hole, the retaining ring electrically disconnects the first connector from the second connector and mechanically removes it, and also mechanically removes the blade from the rack. The electronic device according to Appendix 1. [Appendix 3] The through hole is arranged in a portion of the front plate that does not overlap with the electronic substrate at the central portion in the longitudinal direction. The electronic device according to Appendix 1 or 2. [Appendix 4] The first connector is a connector portion disposed at the end portion on the back side of the electronic substrate itself. The electronic device according to any one of Appendices 1 to 3. [Appendix 5] The head is configured to be rotated by attaching a tool. The electronic device according to any one of Appendices 1 to 4. [Appendix 6] The head is configured to be rotated by pinching it with a finger. The electronic device according to any one of Appendices 1 to 4. [Appendix 7] The male screw portion has a groove portion that is recessed in the radial direction at a predetermined position in the axial direction. The groove portion is configured such that the retaining ring is mounted so as not to be axially movable. The electronic device according to any one of Appendices 1 to 6. [Appendix 8] The retaining ring is an E-ring, a C-ring, or a snap ring that is mounted in the groove portion. The electronic device according to Supplementary Note 7. [Supplementary Note 9] The retaining ring is configured to be directly fixed to the male screw portion. The electronic device according to any one of Supplementary Notes 1 to 6. [Supplementary Note 10] The rack is fixed with guide members that slidably support the left and right end portions of the electronic substrate of the blade inserted from the slot in the front-rear direction. The electronic device according to any one of Supplementary Notes 1 to 9. [Supplementary Note 11] A backboard is fixed inside the rack. The second connector is fixed to the backboard. The electronic device according to any one of Supplementary Notes 1 to 10. [Supplementary Note 12] A front plate is fixed to the front surface of the electronic substrate, and a blade to which a first connector is fixed to the electronic substrate, A rack having at least one slot for accommodating the blade and having a second connector fixed thereto that is conductively connected to the first connector when the blade is accommodated, A screw for fixing the blade to the rack, A connector attachment / detachment method for attaching and detaching the first connector and the second connector in an electronic device including: The screw includes a male screw portion extending axially from the head, and a retaining ring is mounted on the male screw portion so as not to be axially movable, The front plate includes a through hole through which the male screw portion is inserted, and is sandwiched between the head and the retaining ring at the peripheral edge of the through hole, The rack is fixed with an internal plate having a screw hole that engages with the male screw portion inserted through the through hole when the blade is accommodated in the slot, The connector attachment / detachment method includes: By screwing the screw into the screw hole, the head presses the front peripheral edge of the through hole of the front plate against the inside of the rack, electrically connecting the first connector to the second connector and mechanically inserting the first connector into the second connector. By loosening the screw so as to remove it from the screw hole, the retaining ring presses the rear peripheral edge of the through hole of the front plate against the outside of the rack, electrically disconnecting the first connector from the second connector and mechanically removing the first connector from the second connector. Connector attachment / detachment method. [Appendix 13] By screwing the screw into the screw hole, the first connector is electrically connected to the second connector and mechanically inserted into the second connector, and the blade is mechanically fixed to the rack. By loosening the screw so as to remove it from the screw hole, the first connector is electrically disconnected from the second connector and mechanically removed from the second connector, and the blade is mechanically removed from the rack. The connector attachment / detachment method according to Appendix 12.

[0037] Note that the disclosure of Patent Document 1 is incorporated herein by reference and can be used as the basis or part of the present invention as necessary. Within the scope of the entire disclosure of the present invention (including the claims and the drawings), further modifications and adjustments of the form or embodiments are possible based on its basic technical concept. Also, within the scope of the entire disclosure of the present invention, various combinations or selections (including non-selections as necessary) of various disclosure elements (including each element of each claim, each element of each form or embodiment, each element of each drawing, etc.) are possible. That is, the present invention naturally includes the entire disclosure including the claims and the drawings, and various modifications and corrections that could be made by those skilled in the art according to the technical concept. Further, regarding the numerical values and numerical ranges described in the present application, even if not explicitly stated, any intermediate value, lower-order value, and small range thereof are considered to be described. Additionally, each disclosure item of the above-cited document is, as necessary, in accordance with the spirit of the present invention of the application, and part or all of it is also considered to be included in (belonging to) the disclosure items of the present application when combined with the description items of this document as part of the disclosure of the present invention of the application.

Explanation of Reference Signs

[0038] 1 Electronic device 10 Blade 11 Front plate 11a Through hole 12 Electronic substrate 13 Connector (first connector) 20 Screw 20a Head 20b Male screw part 20c Groove part 21 Retaining ring 30 Rack 30a Slot 31 Body 32 Inner plate 32a Screw hole 33 Screw 34 Guide member 35 Backboard 36 Connector (second connector)

Claims

1. A front plate is fixed to the front surface of an electronic substrate, a blade having a first connector fixed thereto is provided on the electronic substrate, a rack having at least one slot for accommodating the blade and having a second connector fixed thereto which is conductively connected to the first connector when the blade is accommodated therein, a screw for fixing the blade to the rack, and the screw includes a male screw portion extending axially from a head, and a retaining ring is attached to the male screw portion so as not to be axially movable relative thereto, the front plate includes a through hole through which the male screw portion is inserted, and is sandwiched between the head and the retaining ring at a peripheral portion of the through hole, an inner plate having a screw hole that engages with the male screw portion inserted through the through hole is fixed to the rack when the blade is accommodated in the slot, the head is configured to press the front peripheral edge portion of the through hole of the front plate against the inside of the rack by screwing the screw into the screw hole, thereby electrically connecting the first connector to the second connector and mechanically inserting them, the retaining ring is configured to press the rear peripheral edge portion of the through hole of the front plate against the outside of the rack by loosening the screw to remove it from the screw hole, thereby electrically disconnecting the first connector from the second connector and mechanically removing them, An electronic device.

2. the head is configured to electrically connect the first connector to the second connector and mechanically insert them and mechanically fix the blade to the rack by screwing the screw into the screw hole, the retaining ring is configured to electrically disconnect the first connector from the second connector and mechanically remove them and mechanically remove the blade from the rack by loosening the screw to remove it from the screw hole, The electronic device according to claim 1.

3. The through hole is disposed in a portion of the front plate that does not overlap with the electronic substrate at the central portion in the longitudinal direction of the front plate. The electronic device according to claim 1.

4. The head is configured to mount and rotate a tool. The electronic device according to claim 1.

5. The male screw portion has a groove portion that is recessed in the radial direction at a predetermined position in the axial direction. The groove portion is configured such that the retaining ring is mounted so as not to be axially movable. The electronic device according to claim 1.

6. The retaining ring is an E-ring or a C-ring or a snap ring that is mounted in the groove portion. The electronic device according to claim 5.

7. The rack is fixed with guide members that slidably support the left and right end portions of the electronic substrate of the blade inserted from the slot in the front-rear direction. The electronic device according to claim 1.

8. A backboard is fixed inside the rack. The second connector is fixed to the backboard. The electronic device according to claim 1.

9. A front plate is fixed to the front surface of the electronic substrate, and a blade having a first connector fixed to the electronic substrate. A rack having at least one slot for storing the blade and having a second connector fixed thereto that is conductively connected to the first connector when the blade is stored. A screw for fixing the blade to the rack. A connector attachment / detachment method for attaching and detaching the first connector and the second connector in an electronic device having The screw includes a male screw portion extending axially from the head, and a retaining ring is attached to the male screw portion so as not to be axially movable. The front plate includes a through hole through which the male screw portion is inserted, and is sandwiched between the head and the retaining ring at the peripheral edge of the through hole. An inner plate having a screw hole that engages with the male screw portion inserted through the through hole is fixed to the rack when the blade is housed in the slot. The connector attachment / detachment method is as follows: By screwing the screw into the screw hole, the head presses the front-side peripheral edge of the through hole of the front plate against the inside of the rack, electrically connecting the first connector to the second connector and mechanically inserting it. By loosening the screw so as to remove it from the screw hole, the retaining ring presses the back-side peripheral edge of the through hole of the front plate against the outside of the rack, electrically disconnecting the first connector from the second connector and mechanically removing it. Connector attachment / detachment method.

10. By screwing the screw into the screw hole, the first connector is electrically connected to the second connector and mechanically inserted, and the blade is mechanically fixed to the rack. By loosening the screw so as to remove it from the screw hole, the first connector is electrically disconnected from the second connector and mechanically removed, and the blade is mechanically removed from the rack. The connector attachment / detachment method according to Claim 9.

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