CN111106463B - Electronic device - Google Patents
Electronic device Download PDFInfo
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- CN111106463B CN111106463B CN201911094558.XA CN201911094558A CN111106463B CN 111106463 B CN111106463 B CN 111106463B CN 201911094558 A CN201911094558 A CN 201911094558A CN 111106463 B CN111106463 B CN 111106463B
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- Prior art keywords
- sleeve
- section
- hole
- electronic device
- narrow section
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R12/00—Structural associations of a plurality of mutually-insulated electrical connecting elements, specially adapted for printed circuits, e.g. printed circuit boards [PCB], flat or ribbon cables, or like generally planar structures, e.g. terminal strips, terminal blocks; Coupling devices specially adapted for printed circuits, flat or ribbon cables, or like generally planar structures; Terminals specially adapted for contact with, or insertion into, printed circuits, flat or ribbon cables, or like generally planar structures
- H01R12/70—Coupling devices
- H01R12/71—Coupling devices for rigid printing circuits or like structures
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/62—Means for facilitating engagement or disengagement of coupling parts or for holding them in engagement
- H01R13/639—Additional means for holding or locking coupling parts together, after engagement, e.g. separate keylock, retainer strap
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- Mounting Of Printed Circuit Boards And The Like (AREA)
- Casings For Electric Apparatus (AREA)
Abstract
The invention discloses an electronic device, comprising: a first element having a first through hole; the second element is positioned below the first element and is provided with a second through hole which is vertically opposite to the first through hole; the fixing piece is provided with a narrow section positioned at the lower end of the fixing piece and a wide section connected to the upper end of the narrow section, the narrow section is provided with two elastic arms which are oppositely arranged and a slot positioned between the two elastic arms, and the fixing piece is provided with a buckling part formed by protruding each elastic arm; the sleeve is sleeved on the narrow section, and the lower end of the sleeve is positioned above the clamping part; the sleeve passes through the first through hole from top to bottom along with the narrow section, the lower end face of the sleeve is downwards abutted to the second element, the narrow section moves downwards relative to the sleeve, the two elastic arms are accommodated in the second through hole, the buckling part is buckled on the bottom face of the second element, the wide section is accommodated in the first through hole, the wide section is accommodated in the upper portion of the sleeve and outwards unfolded under the extrusion of the wide section, and the upper portion of the sleeve is upwards abutted to the first element. The electronic device of the invention has single installation direction and convenient assembly.
Description
[ technical field ] A method for producing a semiconductor device
The present invention relates to an electronic device, and more particularly to an electronic device in which an electronic card is engaged with a circuit board through a sleeve-mounted holder.
[ background of the invention ]
The opening direction of the slot of the lateral connector is consistent with the extending direction of the circuit board, and the slot of the lateral connector is arranged above the circuit board, so that a certain distance is certainly arranged between the electronic card and the circuit board after the electronic card is transversely inserted into the slot of the lateral connector, and in order to ensure that the whole electronic card can be stably inserted into the slot, the distance between the electronic card and the circuit board must be kept constant.
The electronic device comprises a circuit board, a fixing piece and a clamping part, wherein the fixing piece is sleeved with a sleeve and is used for stably arranging an electronic card above the circuit board, the electronic card is provided with a first through hole, the circuit board is provided with a second through hole corresponding to the first through hole, the fixing piece comprises a base part, a limiting part extending upwards from the base part, two elastic arms extending downwards from the base part and a clamping part arranged on each elastic arm, and the two clamping parts are arranged oppositely. The sleeve is arranged between the electronic card and the circuit board and used for upwards abutting against the electronic card and downwards abutting against the circuit board, and the length of the sleeve is equal to the required distance between the electronic card and the circuit board so as to meet the requirement of maintaining the required distance between the electronic card and the circuit board. The limiting part is used for being abutted against the top surface of the electronic card downwards, and the buckling part is used for being buckled on the bottom surface of the circuit board upwards, so that the electronic card and the circuit board are ensured to be stable in positions on two ends of the sleeve.
However, when the above-mentioned fixing member and the above-mentioned sleeve are mounted on the electronic card and the circuit board, the sleeve needs to be placed above the corresponding second through hole before the electronic card is inserted; inserting the electronic card into the slot of the lateral connector, wherein the sleeve is arranged between the circuit board and the electronic card; and then, the fixing piece downwards sequentially penetrates through the first through hole, the sleeve and the second through hole, so that the limiting part is downwards abutted to the electronic card, the buckling part is buckled on the bottom surface of the circuit board, the upper end surface of the sleeve is abutted to the bottom surface of the electronic card, and the lower end surface of the sleeve is abutted to the top surface of the circuit board, so that the whole electronic device is assembled. Therefore, the assembly method has multiple steps and different assembly directions among parts, so that the assembly process is complex and the assembly time is long.
Therefore, there is a need to design a new electronic device to overcome the above problems.
[ summary of the invention ]
The invention aims to provide an electronic device which is single in installation direction and convenient to assemble, and can fix a first element and a second element.
In order to achieve the purpose, the invention adopts the following technical scheme:
an electronic device, comprising: a first element having a first through hole penetrating up and down; the second element is positioned below the first element and is provided with a second through hole which penetrates through the first element from top to bottom, and the second through hole and the first through hole are arranged oppositely from top to bottom; the fixing piece is provided with a narrow section positioned at the lower end of the fixing piece and a wide section connected to the upper end of the narrow section, the narrow section is provided with two elastic arms which are oppositely arranged and a slot positioned between the two elastic arms, and the fixing piece is provided with a buckling part which is formed by protruding and extending each elastic arm; the sleeve is sleeved on the narrow section, and the lower end of the sleeve is positioned above the buckling part; the sleeve penetrates through the first through hole from top to bottom along with the narrow section, the lower end face of the sleeve is downwards abutted to the second element, the narrow section is opposite to the sleeve and moves downwards, the two elastic arms are accommodated in the second through hole, the buckling part is buckled on the bottom face of the second element, the wide section is accommodated in the first through hole, the upper portion of the sleeve is accommodated in the wide section and is outwards propped open by being extruded by the wide section, and the upper portion of the sleeve is upwards abutted to the first element.
Further, the wide section is upwards connected with a limiting section, and the limiting section is downwards abutted to the first element.
Further, before the narrow section moves downwards relative to the sleeve, the sleeve is only sleeved on the narrow section.
Further, before the narrow section moves downwards relative to the sleeve, the height of the sleeve is equal to the distance between the upper edge of the narrow section and the buckling part.
Furthermore, the elastic arm is provided with a first guide surface, the buckling part is provided with a second guide surface positioned above the first guide surface, and the first guide surface and the second guide surface are arranged at intervals up and down and are used for guiding the elastic arm to be inserted into the second through hole successively.
Further, the sleeve is an elastic rubber part, and the wall thickness of the sleeve sleeved outside the wide section is smaller than that of the sleeve sleeved outside the narrow section.
Furthermore, the sleeve is made of metal, the sleeve is provided with an annular part and a plurality of supporting arms which are formed by extending upwards from the annular part, the supporting arms are distributed at intervals, a groove is formed between every two adjacent supporting arms, the groove penetrates through the sleeve upwards, the supporting arms are squeezed by the wide section to be expanded outwards, and the supporting arms are upwards abutted to the first element.
Furthermore, the first component is an electronic card, the second component is a circuit board, the electronic device further comprises an electrical connector, the electrical connector is mounted on the second component, the electrical connector is horizontally and concavely provided with a slot for inserting the first component, and the slot is located above the second component.
Furthermore, the wide section comprises a cylindrical section and a circular platform section which is connected with the cylindrical section and the narrow section, and the circular platform section gathers together and shrinks from the cylindrical section to the narrow section.
Furthermore, a connecting edge is arranged between the cylindrical section and the circular table section, and the connecting edge extrudes the inner wall of the sleeve outwards.
In order to achieve the purpose, the invention adopts another technical scheme as follows:
an electronic device, comprising: the first element is provided with a first through hole which penetrates through the first element from top to bottom, and the first through hole is a round hole; the second element is positioned below the first element and is provided with a second through hole which penetrates through the first element from top to bottom, and the second through hole and the first through hole are arranged oppositely from top to bottom; the fixing piece is provided with a narrow section positioned at the lower end of the fixing piece and a wide section connected to the upper end of the narrow section, the wide section is accommodated in the first through hole, the narrow section is provided with two elastic arms which are oppositely arranged and a slot positioned between the two elastic arms, the fixing piece is provided with a buckling part formed by protruding and extending each elastic arm, the two elastic arms are accommodated in the second through hole, and the two buckling parts are buckled on the bottom surface of the second element; the sleeve is of a cylindrical structure and sleeved outside the fixing piece, the sleeve is located above the buckling part, the lower portion of the sleeve is sleeved on the narrow section and is abutted to the second element downwards, the outer diameter of the lower portion of the sleeve is smaller than or equal to the diameter of the first through hole, the upper portion of the sleeve is sleeved on the wide section and is squeezed by the wide section to be unfolded outwards, and the upper portion of the sleeve is abutted to the first element upwards.
Further, the wide section is upwards connected with a limiting section, and the limiting section is downwards abutted to the first element.
Furthermore, the elastic arm is provided with a first guide surface, the buckling part is provided with a second guide surface positioned above the first guide surface, and the first guide surface and the second guide surface are arranged at intervals up and down and are used for guiding the elastic arm to be inserted into the second through hole successively.
Furthermore, the sleeve is made of metal, the sleeve is provided with an annular part and a plurality of supporting arms which are formed by upwards extending the annular part, the supporting arms are distributed at intervals, a groove is formed between every two adjacent supporting arms, the groove upwards penetrates through the sleeve, the annular part is sleeved on the narrow section and downwards abuts against the second element, the supporting arms are sleeved on the wide section and outwards spread under the extrusion of the wide section, and the supporting arms upwards abut against the first element.
Furthermore, the first component is an electronic card, the second component is a circuit board, the electronic device further comprises an electrical connector, the electrical connector is mounted on the circuit board, the electrical connector is horizontally and concavely provided with a slot for inserting the first component, and the slot is located above the second component.
Furthermore, the wide section comprises a cylindrical section and a circular platform section which is connected with the cylindrical section and the narrow section, and the circular platform section gathers together and shrinks from the cylindrical section to the narrow section.
Furthermore, a connecting edge is arranged between the cylindrical section and the circular table section, and the connecting edge extrudes the inner wall of the sleeve outwards.
Compared with the prior art, the electronic device has the advantages that the outer diameter of the sleeve sleeved outside the narrow section is not larger than the diameter of the first through hole, so that the narrow section sleeved with the sleeve can integrally penetrate through the first through hole from top to bottom, the mounting direction is single, and the operation is convenient and rapid. The lower end surface of the sleeve abuts against the second element downwards, and the narrow section moves downwards relative to the sleeve. The narrow section moves downwards to drive the wide section to move downwards, so that the wide section can be accommodated in the first through hole and the upper part of the sleeve in a segmented mode, the upper part of the sleeve is squeezed by the wide section to be expanded outwards and is abutted against the first element upwards, and the sleeve is abutted against the first element and the second element respectively, so that the requirement of the required distance between the first element and the second element is met. Meanwhile, the wide section is accommodated in the first through hole, and the buckling part is buckled on the bottom surface of the second element, so that the first element and the second element can be stably locked and fixed at two ends of the sleeve.
[ description of the drawings ]
Fig. 1 is a perspective view of an electronic device according to a first embodiment of the invention.
FIG. 2 is a partial cross-sectional view of the electronic card of FIG. 1 shown without the electronic card inserted into the electrical connector.
Fig. 3 is an exploded perspective view of the retainer and the sleeve of fig. 1.
Fig. 4 is a perspective assembly view of the retainer and the sleeve of fig. 3.
Fig. 5 is a schematic view illustrating a process of mounting the holder and the sleeve of fig. 1 into the electronic card and the circuit board.
Fig. 6 is an exploded perspective view of a holder and a sleeve in a second embodiment of the electronic device of the invention.
Fig. 7 is a perspective assembly view of the retainer and the sleeve of fig. 6.
Fig. 8 is a schematic view illustrating an assembly process of the holder and the sleeve integrally mounted to the electronic card and the circuit board in the second embodiment of the electronic device of the present invention.
Fig. 9 is a cross-sectional view of the view of fig. 8 (d) from another perspective.
Detailed description of the embodiments reference is made to the accompanying drawings in which:
electronic card 1 first through hole 11 circuit board 2 second through hole 21
Fixing part 321 contact part 322 welding part 323 fixing piece 4
Spacing 41 wide sections 42 cylinder section 421 round platform section 422
Narrow 43 slot 431 resilient arm 432 of connecting edge 423
The first guide surface 4321 and the locking portion 44 have the second guide surface 441 contacting the surface 442
Upper 51, lower 52, annular 53 of sleeve 5, 5
[ detailed description ] embodiments
For a better understanding of the objects, structure, features, and functions of the invention, reference should be made to the drawings and detailed description that follow.
As shown in fig. 1 to 5, a first embodiment of the electronic device of the present invention includes a first component, a second component, an electrical connector 3, a plurality of holders 4 and a plurality of sleeves 5. In the present embodiment, the first component is an electronic card 1 (the first component is described as the electronic card 1), and the second component is a circuit board 2 (the second component is described as the circuit board 2). The electrical connector 3 is of a lateral structure and is mounted on the circuit board 2 in a downward direction.
As shown in fig. 1 and 2, the electrical connector 3 includes an insulating body 31 and a plurality of terminals 32 disposed on the insulating body 31, the insulating body 31 is downwardly mounted on the circuit board 2, the insulating body 31 is horizontally recessed from a front end surface of the insulating body to a rear end thereof to form a slot 311, the slot 311 is located above the circuit board 2, a recessed direction of the slot 311 is parallel to the circuit board 2, and the electronic card 1 is inserted into the slot 311 in a horizontal direction. As can be seen, the electronic card 1 is disposed above the circuit board 2 in parallel, and a space is formed between the electronic card 1 and the circuit board 2. The plurality of terminals 32 are disposed on the upper and lower sides of the slot 311 and distributed in two rows, each terminal 32 has a fixing portion 321, a contact portion 322 extending forward from the fixing portion 321, and a soldering portion 323 extending backward from the fixing portion 321, the fixing portion 321 is fixed to the insulating body 31, the contact portion 322 protrudes into the slot 311 to contact with the electronic card 1 to form an electrical connection, and the soldering portion 323 is exposed behind the insulating body 31 to be soldered to the circuit board 2 to form an electrical connection.
As shown in fig. 1 and 2, the electronic card 1 is provided with a plurality of first through holes 11 penetrating up and down on an edge thereof, the circuit board 2 is provided with a plurality of second through holes 21 penetrating up and down, and after the electronic card 1 is inserted into the insertion slot 311, the plurality of first through holes 11 on the electronic card 1 and the plurality of second through holes 21 on the circuit board 2 are arranged in a one-to-one correspondence up and down. The first through hole 11 and the second through hole 21 are both round holes, and the diameter of the first through hole 11 is larger than that of the second through hole 21.
As shown in fig. 1 and 5, each of the holders 4 is sleeved with one of the sleeves 5, and the holders 4 are accommodated in a corresponding one of the first through holes 11 and a corresponding one of the second through holes 21, and the corresponding sleeve 5 is disposed between the electronic card 1 and the circuit board 2.
As shown in fig. 3 and 5, the holder 4 has a wide section 42, a position-limiting section 41 connected to the upper end of the wide section 42, a narrow section 43 connected to the lower end of the wide section 42, and two opposite fastening portions 44.
As shown in fig. 3 and 5, the position-limiting section 41 is substantially cylindrical, and has a diameter larger than that of the first through hole 11, and the position-limiting section 41 is configured to abut against the electronic card 1 downward.
As shown in fig. 3 and 5, the wide section 42 includes a cylindrical section 421 and a circular truncated cone section 422 connected to a lower end of the cylindrical section 421, the cylindrical section 421 and the circular truncated cone section 422 are coaxially disposed, a diameter of the cylindrical section 421 is substantially the same as a diameter of the first through hole 11, or a diameter of the cylindrical section 421 may be slightly larger than a diameter of the first through hole 11, the cylindrical section 421 is configured to be received in the first through hole 11, so that the cylindrical section 421 can be fixed with the electronic card 1. A connecting edge 423 is arranged between the cylindrical section 421 and the circular truncated cone section 422, the connecting edge 423 is circular, the circular truncated cone section 422 is gathered and contracted from the cylindrical section 421 towards the narrow section 43, and the circular truncated cone section 422 is used for guiding the sleeve 5 to move upwards to the outside of the cylindrical section 421. In other embodiments, the diameter of the cylindrical section 421 may be smaller than the diameter of the first through hole 11, but the outer diameter of the sleeve 5 sleeved on the cylindrical section 421 must be larger than the diameter of the first through hole 11.
As shown in fig. 3 and 5, the narrow section 43 is configured to be received in the second through hole 21, the narrow section 43 is also configured in a substantially cylindrical shape, so that the narrow section 43, the wide section 42 and the position-limiting section 41 are coaxially configured, the diameter of the narrow section 43 is smaller than the diameter of the cylindrical section 421, and thus the diameter of the position-limiting section 41, the diameter of the cylindrical section 421 and the diameter of the narrow section 43 are sequentially reduced. The diameter of the narrow section 43 is smaller than that of the second through hole 21, and the outer diameter of the sleeve 5 sleeved on the narrow section 43 is larger than that of the second through hole 21. In other embodiments, the diameter of the narrow section 43 may be equal to the diameter of the second through hole 21.
As shown in fig. 3 and 5, the narrow section 43 is provided with a slot 431 penetrating the narrow section 43 downward and two elastic arms 432 located at both sides of the slot 431, and the slot 431 penetrates the narrow section 43 vertically. A first guiding surface 4321 is arranged at the end of each elastic arm 432, the two first guiding surfaces 4321 are both arranged obliquely downwards towards the middle slot 431, and the first guiding surfaces 4321 are arranged in a local conical surface.
As shown in fig. 3 and 5, each elastic arm 432 horizontally protrudes outward to form one fastening portion 44, the outermost diameter of the two fastening portions 44 is larger than the diameter of the second through hole 21, the fastening portion 44 is disposed above the first guiding surface 4321, a second guiding surface 441 is disposed on the fastening portion 44, the second guiding surface 441 is disposed on a side surface of the fastening portion 44, both the second guiding surfaces 441 are inclined downward toward the middle slot 431, and the second guiding surface 441 is disposed in a partial conical surface. The first guiding surface 4321 and the second guiding surface 441 are used to sequentially guide the elastic arm 432 to be inserted into the second through hole 21. The upper end surface of the fastening portion 44 is a horizontally disposed abutting surface 442, and the abutting surface 442 is used for abutting against the bottom surface of the circuit board 2, so that the fastening portion 44 is fastened to the bottom surface of the circuit board 2.
As shown in fig. 3, the sleeve 5 is an elastic cylinder with an upper opening and a lower opening, and in this embodiment, the sleeve 5 is an elastic rubber.
As shown in fig. 4 and 5, when the sleeve 5 is sleeved outside the narrow section 43, the lower end surface of the sleeve 5 abuts against the abutting surface 442, the outer diameter of the sleeve 5 sleeved outside the narrow section 43 is equal to the diameter of the cylindrical section 421, and the outer diameter of the sleeve 5 sleeved outside the narrow section 43 is larger than the diameter of the second through hole 21. The length of the sleeve 5 is equal to the distance from the upper edge of the narrow section 43 to the abutting surface 442, the distance from the connecting edge 423 to the upper edge of the narrow section 43 is less than the depth of the second through hole 21, the length of the sleeve 5 is greater than the distance that needs to be maintained between the bottom surface of the electronic card 1 and the top surface of the circuit board 2, and the distance from the upper edge of the wide section 42 to the abutting surface 442 is less than the sum of the depth of the first through hole 11, the length of the sleeve 5 and the depth of the second through hole 21. In other embodiments, when the sleeve 5 is sleeved outside the narrow section 43 only, the length of the sleeve 5 may be less than the distance from the upper edge of the narrow section 43 to the abutment surface 442, but the distance from the connecting edge 423 to the upper end surface of the sleeve 5 is less than the depth of the second through hole 21.
As shown in fig. 1, 2 and 5, the electronic device assembly process is as follows:
firstly, the electronic card 1 is inserted into the insertion slot 311 in a horizontal direction, so that the contact portion 322 is in contact with the electronic card 1, the electronic card 1 is arranged above the circuit board 2 in parallel, the plurality of first through holes 11 on the electronic card 1 and the plurality of second through holes 21 on the circuit board 2 are arranged in a one-to-one up-and-down correspondence, and a space is arranged between the electronic card 1 and the circuit board 2.
Next, the sleeve 5 is sleeved from the bottom to the top only outside the narrow section 43 of the retainer 4, and the lower end surface of the sleeve 5 abuts against the abutting surface 442.
Then, the narrow section 43 sleeved with the sleeve 5 passes through the first through hole 11 from top to bottom, since the outer diameter of the sleeve 5 sleeved outside the narrow section 43 is equal to the diameter of the first through hole 11, the sleeve 5 can pass through the first through hole 11 from top to bottom along with the narrow section 43, since the diameter of the narrow section 43 is smaller than the diameter of the second through hole 21, and both the first guiding surfaces 4321 are disposed obliquely downward toward the middle of the slot 431, so that the first guiding surfaces 4321 can guide the elastic arm 432 to move toward the second through hole 21.
When the bottom ends of the two buckling parts 44 on the narrow section 43 reach the top surface of the circuit board 2, the slot 431 is formed in the narrow section 43, and the two second guide surfaces 441 are both arranged obliquely downwards towards the middle slot 431, so that the second guide surfaces 441 can guide the buckling parts 44 to move towards the second through hole 21, and the two buckling parts 44 below the sleeve 5 can utilize the slot 431, so that the two elastic arms 432 are close to each other, and at the moment, the outermost side of the two buckling parts 44 is reduced in size.
When the lower end surface of the sleeve 5 moves to the top surface of the circuit board 2, because the diameter of the narrow section 43 is smaller than the diameter of the second through hole 21, and the outer diameter of the sleeve 5 sleeved outside the narrow section 43 is larger than the diameter of the second through hole 21, the lower end surface of the sleeve 5 abuts against the top surface of the circuit board 2 downwards, the sleeve 5 sleeved outside the narrow section 43 cannot pass through the second through hole 21, and at the moment, the upper part of the sleeve 5 is propped open due to the outward extrusion of the wide section 42, so that the upper end surface is arranged below the first through hole 11.
Finally, a downward force is further applied to the retainer 4, so that the retainer 4 moves downward relative to the sleeve 5, so that the two elastic arms 432 are received in the second through hole 21, the fastening portion 44 passes through the second through hole 21, and the abutting surface 442 is fastened upward to the bottom surface of the circuit board 2, meanwhile, since the length of the sleeve 5 is substantially equal to the distance between the upper edge of the narrow section 43 and the abutting surface 442, the lower edge of the truncated cone 422 moves downward from the upper end surface of the sleeve 5 into the sleeve 5, and continues to move toward the lower end surface of the sleeve 5, and the truncated cone 422 moves into the upper portion 51 of the sleeve 5 along with the downward movement of the narrow section 43, that is, the upper portion 51 of the sleeve 5 follows the outer side surface of the truncated cone 422 and is guided out of the outer side surface of the cylindrical section 421, the upper portion 51 of the sleeve 5 is pressed by the wide section 42 to be expanded outward by receiving the wide section 42, the wall thickness of the upper portion 51 of the sleeve 5 is reduced, and the height of the entire sleeve 5 is further reduced, the sleeve 5 has a lower portion 52 connected below the upper portion 51 and continuously sleeved outside the narrow section 43, and the wall thickness of the lower portion 52 is kept unchanged, that is, the wall thickness of the upper portion 51 is smaller than that of the lower portion 52. And because the diameter of the cylindrical section 421 is equal to the diameter of the first through hole 11, the upper portion 51 of the sleeve 5 is also disposed outside the first through hole 11, and at the same time, the cylindrical section 421 moves downward along with the narrow section 43 into the first through hole 11 to block the first through hole 11, the position-limiting section 41 abuts against the top surface of the electronic card 1, and the upper end surface of the sleeve 5 abuts against the electronic card 1 upward due to the gravity of the electronic card 1 and the downward acting force of the position-limiting section 41 on the electronic card 1.
As shown in fig. 6 to 9, a second embodiment of the electronic device of the present invention is an electronic device of the present embodiment, which is different from the electronic device of the first embodiment in that: the structure of the sleeve 5' is different. The size relationship between the cylindrical section 421 and the first through hole 11 is different. The outer diameter of the sleeve 5' sleeved outside the narrow section 43 and the diameter of the cylindrical section 421 have different size relationships. When the sleeve 5 'is only sleeved outside the narrow section 43, the length of the sleeve 5' is different from the distance from the upper edge of the narrow section 43 to the abutting surface 442.
As shown in fig. 6, in the present embodiment, the sleeve 5' is made of metal. The lower portion of the sleeve 5 ' is a ring portion 53, the upper portion of the sleeve 5 ' is a plurality of supporting arms 54 vertically extending upward from the ring portion 53, the supporting arms 54 are spaced apart from each other, a groove 55 is formed between two adjacent supporting arms 54, and the groove 55 extends upward through the sleeve 5 '.
As shown in fig. 8, the diameter of the cylindrical section 421 is smaller than the diameter of the first through hole 11. The outer diameter of the sleeve 5' sleeved outside the narrow section 43 is smaller than the diameter of the cylindrical section 421. However, after the plurality of support arms 54 formed to extend vertically abut against the connection edge 423, the diameter of a circle formed by the top ends of the plurality of support arms 54 is larger than the diameter of the first through hole 11.
As shown in fig. 8, when the sleeve 5 ' is only sleeved outside the narrow section 43, the length of the sleeve 5 ' is greater than the distance between the upper edge of the narrow section 43 and the abutting surface 442, but the length of the sleeve 5 ' is less than the distance between the connecting edge 423 and the abutting surface 442, at this time, the distance between the top ends of two adjacent supporting arms 54 is equal to the distance between the lower ends of two adjacent supporting arms 54, that is, the supporting arms 54 all extend vertically upward from the ring-shaped portion 53.
As shown in fig. 8 and 9, the electronic device assembling process of the second embodiment of the electronic device of the present invention is different from the electronic device assembling process of the first embodiment of the electronic device of the present invention in that:
in the process of continuously applying the downward force to the retainer 4, since the length of the sleeve 5 'is greater than the distance between the upper edge of the narrow section 43 and the abutting surface 442 and less than the distance between the connecting edge 423 and the abutting surface 442, the upper edge of the narrow section 43 moves downward from the inside of the sleeve 5' near the upper end of the supporting arm 54 toward the lower end of the supporting arm 54, and the connecting edge 423 moves into the space surrounded by the supporting arms 54 as the narrow section 43 moves downward, that is, the supporting arms 54 of the sleeve 5 'follow the outer side surface of the circular table section 422 and extend upward to the outside of the cylindrical section 421, and the supporting arms 54 are pushed outward by the wide section 42 due to the accommodation of the wide section 42, so that the overall height of the sleeve 5' is slightly reduced, at this time, the distance between the top ends of two adjacent support arms 54 will gradually increase, that is, the inclination angle of the support arms 54 relative to the vertical plane will gradually increase. Since the supporting arms 54 extend along a straight line, eventually, the supporting arms 54 are pressed outward by the connecting edge 423, and the top ends of the supporting arms 54 are disposed outside the first through holes 11 and abut the electronic card 1 upward.
In summary, the electronic device of the present invention has the following advantages:
1) because the cover is located outside the narrow section 43 the external diameter of sleeve 5 is not more than the diameter of first through-hole 11 for the cover is equipped with sleeve 5 the narrow section 43 can be integrative from the top down pass first through-hole 11, the installation direction is single, convenient operation is swift. The lower end face of the sleeve 5 abuts against the circuit board 2 downward, and the narrow section 43 moves downward relative to the sleeve 5. The narrow section 43 moves downwards to drive the wide section 42 to move downwards, so that the wide section 42 is accommodated in the first through hole 11 and the upper part 51 of the sleeve 5 in a segmented manner, the upper part 51 of the sleeve 5 is squeezed by the wide section 42 to be spread outwards and upwards abutted to the electronic card 1, and the sleeve 5 is respectively abutted to the circuit board 2 and the electronic card 1, so that the requirement of the required distance between the electronic card 1 and the circuit board 2 is met. Meanwhile, the wide section 42 is accommodated in the first through hole 11, and the fastening portion 44 is fastened to the bottom surface of the circuit board 2, so that the electronic card 1 and the circuit board 2 can be stably fastened at two ends of the sleeve 5.
2) The wide section 42 is connected to the limiting section 41, the limiting section 41 is connected to the electronic card 1, and the fastening portion 44 is fastened to the bottom surface of the circuit board 2, so that the electronic card 1 and the circuit board 2 can be stably fastened to each other at two ends of the sleeve 5.
3) Before the narrow section 43 moves downward relative to the sleeve 5, the height of the sleeve 5 is equal to the distance between the upper edge of the narrow section 43 and the fastening portion 44, and the distance between the connecting edge 423 and the upper edge of the narrow section 43 is smaller than the depth of the second through hole 21, so that when the fastening portion 44 is fastened to the bottom surface of the circuit board 2, that is, after the fastening portion 44 moves downward by a distance consistent with the depth of the second through hole 21, the cylindrical section 421 inevitably moves downward and is accommodated in the sleeve 5, and the sleeve 5 is further expanded outward by being pressed by the cylindrical section 421, and since the diameter of the cylindrical section 421 is equal to the diameter of the first through hole 11, the upper end surface of the sleeve 5 inevitably locates at the outer side of the first through hole 11, so as to abut against the bottom surface of the electronic card 1.
4) The sleeve 5 is made of elastic rubber, and by utilizing the deformability of the sleeve 5, the height of the sleeve 5 can be adjusted between the electronic card 1 and the circuit board 2 in order to facilitate the abutting between the electronic card 1 and the circuit board 2 while meeting the requirement that the sleeve 5 is pushed open by the cylindrical section 421.
5) The sleeve 5' is a metal part, and the grooves 55 are used to provide a space for the support arms 54 to deform outward when being pressed by the cylindrical section 421.
6) Because the supporting arm 54 is a linearly extending metal, after the linearly extending supporting arm 54 abuts against the connecting edge 423, the top end of the supporting arm 54 is necessarily located outside the connecting edge 423 and is forced to expand.
7) The wide section 42 includes the cylindrical section 421 and the circular truncated cone section 422 connecting the cylindrical section 421 and the narrow section 43, and the circular truncated cone section 422 gathers and contracts from the cylindrical section 421 to the narrow section 43, so that the sleeve 5 made of elastic rubber or the plurality of support arms 54 made of metal can be guided upwards to the outside of the cylindrical section 421 along the outer surface of the circular truncated cone section 422.
The above detailed description is only for the purpose of illustrating the preferred embodiments of the present invention, and not for the purpose of limiting the scope of the present invention, therefore, all technical changes that can be made by applying the present specification and the drawings are included in the scope of the present invention.
Claims (17)
1. An electronic device, comprising:
a first element having a first through hole penetrating up and down;
the second element is positioned below the first element and is provided with a second through hole which penetrates through the first element from top to bottom, and the second through hole and the first through hole are arranged oppositely from top to bottom;
the fixing piece is provided with a narrow section positioned at the lower end of the fixing piece and a wide section connected to the upper end of the narrow section, the narrow section is provided with two elastic arms which are oppositely arranged and a slot positioned between the two elastic arms, and the fixing piece is provided with a buckling part which is formed by protruding and extending each elastic arm;
the sleeve is sleeved on the narrow section, and the lower end of the sleeve is positioned above the buckling part;
the sleeve penetrates through the first through hole from top to bottom along with the narrow section, the lower end face of the sleeve is downwards abutted to the second element, the narrow section is opposite to the sleeve and moves downwards, the two elastic arms are accommodated in the second through hole, the buckling part is buckled on the bottom face of the second element, the wide section is accommodated in the first through hole, the upper portion of the sleeve is accommodated in the wide section and is outwards propped open by being extruded by the wide section, and the upper portion of the sleeve is upwards abutted to the first element.
2. The electronic device of claim 1, wherein: the wide section is upwards connected with a limiting section, and the limiting section is downwards abutted to the first element.
3. The electronic device of claim 1, wherein: before the narrow section moves downwards relative to the sleeve, the sleeve is only sleeved on the narrow section.
4. The electronic device of claim 3, wherein: before the narrow section moves downwards relative to the sleeve, the height of the sleeve is equal to the distance between the upper edge of the narrow section and the buckling part.
5. The electronic device of claim 1, wherein: the elastic arm is provided with a first guide surface, the buckling part is provided with a second guide surface positioned above the first guide surface, and the first guide surface and the second guide surface are arranged at intervals up and down and are used for guiding the elastic arm to be inserted into the second through hole successively.
6. The electronic device of claim 1, wherein: the sleeve is an elastic rubber part, and the wall thickness of the sleeve sleeved outside the wide section is smaller than that of the sleeve sleeved outside the narrow section.
7. The electronic device of claim 1, wherein: the sleeve is made of metal and is provided with an annular part and a plurality of supporting arms which are formed by upwards extending from the annular part, the supporting arms are distributed at intervals, a groove is formed between every two adjacent supporting arms, the groove upwards penetrates through the sleeve, the supporting arms are outwards spread by being extruded by the wide section, and the supporting arms upwards abut against the first element.
8. The electronic device of claim 1, wherein: the first element is an electronic card, the second element is a circuit board, the electronic device further comprises an electric connector, the electric connector is installed on the second element, a slot is horizontally and concavely formed in the electric connector and used for inserting the first element, and the slot is located above the second element.
9. The electronic device of claim 1, wherein: the wide section comprises a cylindrical section and a circular truncated cone section which is connected with the cylindrical section and the narrow section, and the circular truncated cone section is gathered together and shrunk from the cylindrical section to the narrow section.
10. The electronic device of claim 9, wherein: and a connecting edge is arranged between the cylindrical section and the circular table section, and the connecting edge outwards abuts against the inner wall of the sleeve.
11. An electronic device, comprising:
the first element is provided with a first through hole which penetrates through the first element from top to bottom, and the first through hole is a round hole;
the second element is positioned below the first element and is provided with a second through hole which penetrates through the first element from top to bottom, and the second through hole and the first through hole are arranged oppositely from top to bottom;
the fixing piece is provided with a narrow section positioned at the lower end of the fixing piece and a wide section connected to the upper end of the narrow section, the wide section is accommodated in the first through hole, the narrow section is provided with two elastic arms which are oppositely arranged and a slot positioned between the two elastic arms, the fixing piece is provided with a buckling part formed by protruding and extending each elastic arm, the two elastic arms are accommodated in the second through hole, and the two buckling parts are buckled on the bottom surface of the second element;
the sleeve is of a cylindrical structure and sleeved outside the fixing piece, the sleeve is positioned above the buckling part, the lower part of the sleeve is sleeved on the narrow section and is downwards abutted to the second element, the outer diameter of the lower part of the sleeve is smaller than or equal to the diameter of the first through hole, the upper part of the sleeve is sleeved on the wide section and is outwards spread by being extruded by the wide section, and the upper part of the sleeve is upwards abutted to the first element;
the sleeve and the retainer together pass through the first through hole from top to bottom, and before the sleeve passes through the first through hole downward, the outer diameter of the sleeve is not larger than the diameter of the first through hole.
12. The electronic device of claim 11, wherein: the wide section is upwards connected with a limiting section, and the limiting section is downwards abutted to the first element.
13. The electronic device of claim 11, wherein: the elastic arm is provided with a first guide surface, the buckling part is provided with a second guide surface positioned above the first guide surface, and the first guide surface and the second guide surface are arranged at intervals up and down and are used for guiding the elastic arm to be inserted into the second through hole successively.
14. The electronic device of claim 11, wherein: the sleeve is a metal part and is provided with an annular part and a plurality of supporting arms formed by upwards extending the annular part, the supporting arms are distributed at intervals, a groove is formed between every two adjacent supporting arms, the groove upwards penetrates through the sleeve, the annular part is sleeved on the narrow section and downwards abuts against the second element, the supporting arms are sleeved on the wide section and outwards unfolded under the extrusion of the wide section, and the supporting arms upwards abut against the first element.
15. The electronic device of claim 11, wherein: the first element is an electronic card, the second element is a circuit board, the electronic device further comprises an electric connector, the electric connector is installed on the circuit board, the electric connector is horizontally and concavely provided with a slot for inserting the first element, and the slot is located above the second element.
16. The electronic device of claim 11, wherein: the wide section comprises a cylindrical section and a circular truncated cone section which is connected with the cylindrical section and the narrow section, and the circular truncated cone section is gathered together and shrunk from the cylindrical section to the narrow section.
17. The electronic device of claim 16, wherein: and a connecting edge is arranged between the cylindrical section and the circular table section, and the connecting edge outwards abuts against the inner wall of the sleeve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911094558.XA CN111106463B (en) | 2019-11-11 | 2019-11-11 | Electronic device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911094558.XA CN111106463B (en) | 2019-11-11 | 2019-11-11 | Electronic device |
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| Publication Number | Publication Date |
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| CN111106463A CN111106463A (en) | 2020-05-05 |
| CN111106463B true CN111106463B (en) | 2021-06-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201911094558.XA Active CN111106463B (en) | 2019-11-11 | 2019-11-11 | Electronic device |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1550682A (en) * | 2003-02-10 | 2004-12-01 | 索斯科公司 | Floating captive screw |
| CN200990449Y (en) * | 2006-12-15 | 2007-12-12 | 番禺得意精密电子工业有限公司 | Fastening device |
| CN202487884U (en) * | 2011-12-21 | 2012-10-10 | 强竣电子科技(深圳)有限公司 | Circuit board and connector thereof |
| CN104283025A (en) * | 2013-07-05 | 2015-01-14 | 第一精工株式会社 | Connector terminal and connector housing used for the same |
| CN205488651U (en) * | 2016-01-05 | 2016-08-17 | 佛山市顺德区顺达电脑厂有限公司 | Electronic card device |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE202012004543U1 (en) * | 2012-05-07 | 2012-07-12 | Carsten Müller | Spreizringbolzen |
| DE102014203802A1 (en) * | 2014-03-03 | 2015-09-03 | Berrang Entwicklungsgmbh | fastener |
| CN209324822U (en) * | 2018-11-13 | 2019-08-30 | 裴俊 | Eccentric expansion bolt |
-
2019
- 2019-11-11 CN CN201911094558.XA patent/CN111106463B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1550682A (en) * | 2003-02-10 | 2004-12-01 | 索斯科公司 | Floating captive screw |
| CN200990449Y (en) * | 2006-12-15 | 2007-12-12 | 番禺得意精密电子工业有限公司 | Fastening device |
| CN202487884U (en) * | 2011-12-21 | 2012-10-10 | 强竣电子科技(深圳)有限公司 | Circuit board and connector thereof |
| CN104283025A (en) * | 2013-07-05 | 2015-01-14 | 第一精工株式会社 | Connector terminal and connector housing used for the same |
| CN205488651U (en) * | 2016-01-05 | 2016-08-17 | 佛山市顺德区顺达电脑厂有限公司 | Electronic card device |
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| Publication number | Publication date |
|---|---|
| CN111106463A (en) | 2020-05-05 |
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