CN112533431A - Anti-loosening PCBA mainboard - Google Patents
Anti-loosening PCBA mainboard Download PDFInfo
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- CN112533431A CN112533431A CN202011414093.4A CN202011414093A CN112533431A CN 112533431 A CN112533431 A CN 112533431A CN 202011414093 A CN202011414093 A CN 202011414093A CN 112533431 A CN112533431 A CN 112533431A
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- RVCKCEDKBVEEHL-UHFFFAOYSA-N 2,3,4,5,6-pentachlorobenzyl alcohol Chemical compound OCC1=C(Cl)C(Cl)=C(Cl)C(Cl)=C1Cl RVCKCEDKBVEEHL-UHFFFAOYSA-N 0.000 title claims abstract description 23
- 230000000087 stabilizing effect Effects 0.000 claims abstract description 26
- 239000003990 capacitor Substances 0.000 claims abstract description 12
- 230000003321 amplification Effects 0.000 claims abstract description 4
- 238000003199 nucleic acid amplification method Methods 0.000 claims abstract description 4
- 230000006978 adaptation Effects 0.000 claims description 22
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims description 2
- 230000003044 adaptive effect Effects 0.000 description 4
- 238000003756 stirring Methods 0.000 description 4
- 238000009434 installation Methods 0.000 description 3
- 230000000712 assembly Effects 0.000 description 2
- 238000000429 assembly Methods 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000000149 penetrating effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/02—Arrangements of circuit components or wiring on supporting structure
- H05K7/12—Resilient or clamping means for holding component to structure
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- Mounting Of Printed Circuit Boards And The Like (AREA)
Abstract
The invention discloses an anti-loose PCBA mainboard, which comprises a mainboard body, side plates, a mounting seat, a vertical plate and a fixing assembly, wherein the mainboard body is provided with an operational amplifier circuit and a voltage stabilizing circuit, and the voltage stabilizing circuit comprises a power supply end VB, a first switch tube Q1, a second switch tube Q2, a resistor R1, a resistor R2 and a resistor R3; the operational amplification circuit comprises a capacitor C1, a resistor R4, a resistor R5, a voltage stabilizing diode Dw and an operational amplifier U, wherein an external input end is accessed by a non-inverting input end of the operational amplifier U, a reverse input end of the operational amplifier U is simultaneously connected with one ends of resistors R4 and R5, the other end of the resistor R4 is connected with an output end of the operational amplifier U, the other end of the resistor R5 is accessed to a cathode of the voltage stabilizing diode Dw and an anode of a capacitor C1, and a negative power source end of the operational amplifier U is accessed to an anode of the voltage stabilizing diode Dw and a cathode of a capacitor C36.
Description
Technical Field
The invention relates to the technical field of circuit boards, in particular to an anti-loosening PCBA mainboard.
Background
The PCBA board is a PCB blank board which is subjected to SMT loading and then subjected to the whole process of DIP plug-in, is called PCBA for short, is also called a printed circuit board and a printed circuit board, is an important electronic component, is a support body of an electronic component and is a provider for circuit connection of the electronic component. The PCBA mainboard of installation easily appears becoming flexible at present.
Disclosure of Invention
The invention aims to provide an anti-loosening PCBA mainboard, and aims to solve the technical problem that the installed PCBA mainboard in the prior art is easy to loosen.
In order to achieve the purpose, the anti-loose PCBA mainboard comprises a mainboard body, side plates, mounting seats, vertical plates and fixing assemblies, wherein the side plates are arranged on two side walls of the mainboard body, an abutting groove is formed in the upper end of each side plate, the number of the mounting seats is two, the vertical plates are arranged on the mounting seats, each vertical plate is provided with a through hole, an annular groove located outside the through hole and a groove body matched with the side plates, and the fixing assemblies are further arranged on the vertical plates;
each fixing component comprises a fixing column, a seat body, a supporting block and a rotating ring, one end of the fixing column is fixedly connected with the seat body, the other end of the fixing column penetrates through the through hole and is movably connected with the supporting block, the supporting block is arranged in the groove body, the rotating ring is in clearance fit with the annular groove, the rotating ring is sleeved outside the seat body, and threads on the inner wall of the rotating ring are matched with threads on the outer side wall of the seat body.
The fixing component comprises a supporting block and a fixing column, wherein a plurality of hollow grooves and transverse grooves communicated with the hollow grooves are formed in the supporting block, the number of the transverse grooves is multiple, the transverse grooves are distributed on the periphery of the hollow grooves in a circumferential mode, each fixing component further comprises a first adaptation block and a second adaptation block, the first adaptation blocks are fixedly connected with the fixing column and located in the hollow grooves, the first adaptation blocks are arranged in a circular truncated cone-shaped structure, the second adaptation blocks are arranged in the transverse grooves, and inclined planes on the second adaptation blocks are matched with inclined planes on the first adaptation blocks.
Each fixing component further comprises a first elastic piece, one end of the first elastic piece is fixedly connected with the base, the other end of the first elastic piece is fixedly connected with the vertical plate, and the first elastic piece is sleeved outside the fixing rod column.
Each fixing component further comprises a baffle and a second elastic piece, the baffle is fixedly connected with the abutting block and is positioned in the transverse groove, one end of the second elastic piece is fixedly connected with the baffle, and the other end of the second elastic piece is fixedly connected with the abutting block.
The inner side wall of the abutting groove is provided with a plurality of clamping grooves which are distributed in a circumferential manner.
Each vertical plate is provided with a positioning groove, and each side plate is provided with a positioning piece which is mutually clamped with the positioning groove.
The mainboard body is provided with an operational amplifier circuit and a voltage stabilizing circuit, the voltage stabilizing circuit comprises a power supply end VB, a first switch tube Q1, a second switch tube Q2, a resistor R1, a resistor R2 and a resistor R3, the input end of the first switch tube Q1 is connected with the power supply end VB, the first switch tube Q1 is connected with a ground end through the resistor R1 and the resistor R2 which are connected in series, the terminal voltage of the output end of the first switch tube Q1 and the common end of the resistor R1 is used as the output voltage Vout of the voltage stabilizing circuit, the input end of the second switch tube Q2 is connected with the control end of the first switch tube Q1, the output end of the second switch tube Q2 is connected with the ground end, and the control end of the second switch tube Q2 is connected with the common ends of the resistor R1 and the resistor R2; one end of the resistor R3 is connected with a power supply end VB, and the other end of the resistor R3 is connected with the control end of the first switching tube Q1;
the operational amplification circuit comprises a capacitor C1, a resistor R4, a resistor R5, a voltage stabilizing diode Dw and an operational amplifier U, wherein an external input end is accessed by a non-inverting input end of the operational amplifier U, a reverse input end of the operational amplifier U is simultaneously connected with one ends of resistors R4 and R5, the other end of the resistor R4 is connected with an output end of the operational amplifier U, the other end of the resistor R5 is accessed to a cathode of the voltage stabilizing diode Dw and an anode of a capacitor C1, and a negative power source end of the operational amplifier U is accessed to an anode of the voltage stabilizing diode Dw and a cathode of a capacitor C36.
The invention has the beneficial effects that: the side plates are arranged at the two ends of the main board body, so that the side plates are clamped in the groove body to fix the main board body, one end of the fixing column penetrates through the through hole, the rotating ring is screwed clockwise, and the threads on the inner wall of the rotating ring are matched with the threads on the outer side wall of the seat body, so that the fixing column moves towards one end close to the abutting groove along with the rotation of the rotating ring, the abutting block is arranged in the abutting groove, the position of the main board body is limited again, the mounting stability of the main board body is improved, and the main board body is prevented from being loosened.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic circuit diagram of an operational amplifier circuit according to the present invention.
FIG. 2 is a circuit schematic of the voltage regulator circuit of the present invention.
Fig. 3 is a schematic structural diagram of the anti-loose PCBA motherboard of the present invention.
Fig. 4 is an enlarged view of a partial structure of fig. 3B according to the present invention.
FIG. 5 is a front view of the anti-loose PCBA motherboard of the present invention without a mounting seat.
Fig. 6 is a cross-sectional view of the a-a line structure of fig. 5 of the present invention.
Fig. 7 is an enlarged view of a portion of the structure of fig. 6D according to the present invention.
FIG. 8 is a side view of the anti-loose PCBA motherboard of the present invention without a mounting socket.
Fig. 9 is a cross-sectional view of the C-C line structure of fig. 8 of the present invention.
Fig. 10 is a schematic view of a part of the structure of the anti-loose PCBA motherboard according to the present invention.
1-main board body, 2-side board, 21-abutting groove, 211-clamping groove, 22-positioning piece, 221-first connecting board, 222-second connecting board, 3-mounting seat, 4-vertical board, 41-through hole, 42-annular groove, 43-groove body, 44-positioning groove, 45-through groove, 5-fixing component, 51-fixing column, 52-seat body, 53-abutting block, 531-hollow groove, 532-transverse groove, 54-rotating ring, 55-first adapting block, 56-second adapting block, 57-first elastic piece, 58-baffle, 59-second elastic piece, 6-stabilizing component, 61-movable rod, 611-top groove, 612-inner rod sleeve rod, 613-side board, 614-third elastic piece, 615-a first inclined plane, 62-a pin shaft, 63-a toggle piece, 631-a first transverse plate, 632-a second transverse plate, 633-an inclined plate, 634-a top block, 64-a tension spring and 65-a tension spring seat.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.
In the description of the present invention, it is to be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships illustrated in the drawings, and are used merely for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, are not to be construed as limiting the present invention. Further, in the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
Referring to fig. 1 to 10, the invention provides an anti-loose PCBA motherboard, which comprises a motherboard body, side plates, mounting seats, vertical plates and fixing components, wherein the side plates are arranged on two side walls of the motherboard body, an abutting groove is arranged at the upper end of each side plate, the number of the mounting seats is two, the vertical plates are arranged on each mounting seat, each vertical plate is provided with a through hole, an annular groove positioned outside the through hole and a groove body matched with the side plates, and the fixing components are also arranged on each vertical plate;
each fixing component comprises a fixing column, a seat body, a supporting block and a rotating ring, one end of the fixing column is fixedly connected with the seat body, the other end of the fixing column penetrates through the through hole and is movably connected with the supporting block, the supporting block is arranged in the groove body, the rotating ring is in clearance fit with the annular groove, the rotating ring is sleeved outside the seat body, and threads on the inner wall of the rotating ring are matched with threads on the outer side wall of the seat body.
In this embodiment, the plurality of electronic components are mounted on the main board body, the side plates and the main board body are integrally formed, the side plates are disposed at two ends of the main board body, so that the side plates are clamped in the groove body to fix the main board body, then one end of the fixing column penetrates through the through hole, and the rotating ring is screwed clockwise.
Furthermore, the supporting block is internally provided with a plurality of hollow grooves and transverse grooves communicated with the hollow grooves, the number of the transverse grooves is multiple, the plurality of transverse grooves are circumferentially distributed on the peripheries of the hollow grooves, each fixing assembly further comprises a first adaptation block and a second adaptation block, the first adaptation block is fixedly connected with the fixing column and is positioned in the hollow grooves, the first adaptation block is arranged in a circular truncated cone-shaped structure, the second adaptation block is arranged in the transverse grooves, and the inclined surface on the second adaptation block is mutually adapted to the inclined surface on the first adaptation block.
In this embodiment, the fixing column is in clearance fit with the abutting block, the first adapting block abuts against the fixing column and moves downwards in the hollow groove, and then the second adapting block can abut against the first adapting block along with the downward movement of the first adapting block.
Further, every fixed subassembly still includes first elastic component, the one end of first elastic component with pedestal fixed connection, the other end of first elastic component with riser fixed connection, just first elastic component cover is established the outside of fixed rod post.
In this embodiment, the first elastic element is made of a compression spring, and the rotating ring rotates clockwise, so that the fixing column moves towards one end close to the abutting groove, and then the seat body compresses the first elastic element; when the abutting block does not need to abut against the abutting groove, the rotating ring is anticlockwise, the fixing column moves towards one end far away from the abutting groove, and the abutting block can be separated from the abutting groove under the action of the restoring force of the first elastic piece.
Furthermore, each fixing component further comprises a baffle and a second elastic piece, the baffle is fixedly connected with the abutting block and is positioned inside the transverse groove, one end of the second elastic piece is fixedly connected with the baffle, and the other end of the second elastic piece is fixedly connected with the abutting block.
In this embodiment, the second elastic member is also a compression spring, when the second adaptive block abuts against the inner wall of the abutting groove, the baffle presses the second elastic member, and at this time, the second elastic member is in a compressed state, and when the first adaptive block moves upward along with the fixed column, under the action of the restoring force of the second elastic member, the second adaptive block can be quickly restored, and the second adaptive block is restored into the transverse groove.
Furthermore, a plurality of clamping grooves distributed circumferentially are formed in the inner side wall of the abutting groove.
In this embodiment, the fixing column supports the first adapting block to move downward in the hollow groove, and then the second adapting block can be supported along with the downward movement of the first adapting block, and since the inclined surface on the second adapting block and the inclined surface on the first adapting block are mutually adapted, the axial force received by the second adapting block is converted into a radial force, the second adapting block is supported to slide in the transverse groove along the radial direction, and then one end of the second supporting block, which is far away from the first supporting block, is inserted into the clamping groove, so that the installation position of the main board body is further limited, and the main board body is prevented from loosening.
Furthermore, each vertical plate is provided with a positioning groove, and each side plate is provided with a positioning piece which is mutually clamped with the positioning groove.
In this embodiment, through the constant head tank with the mutual adaptation of setting element, can further be right the mounted position of mainboard body is injectd to this has promoted the installation stability of mainboard body avoids appearing becoming flexible.
Furthermore, the anti-loose PCBA mainboard further comprises two stabilizing components, each vertical plate is provided with a through groove communicated with the groove body, each stabilizing component comprises a movable rod, a pin shaft, a stirring piece, a tension spring and a tension spring seat, one end of the movable rod is fixedly connected with the side plate, the other end of the movable rod penetrates through the through groove, one end of the pin shaft is fixedly connected with the vertical plate, the other end of the pin shaft is movably connected with the stirring piece, the stirring piece comprises a first transverse plate, a second transverse plate, an inclined plate and a top block, the first transverse plate, the inclined plate and the second transverse plate are integrally formed, the first transverse plate is parallel to the second transverse plate, the inclined plate is obliquely arranged between the first transverse plate and the second transverse plate, the top block is fixedly connected with the second transverse plate, and the top block is abutted against the movable rod, the tension spring seat is fixedly connected with the vertical plate, and two ends of the tension spring are respectively hooked on the tension spring seat and the second transverse plate.
In this embodiment, through the one end of movable rod with curb plate fixed connection, the other end of movable rod runs through logical groove can further inject the mounted position of mainboard body makes the mainboard body is difficult for appearing becoming flexible, in addition under the effect of extension spring, can make stir on the piece the kicking block with the movable rod takes place to support and holds, further prescribes the mounted position of mainboard body with this makes the mainboard body is difficult for appearing becoming flexible.
Furthermore, the movable rod is provided with a top groove, and one end of the top block is arranged in the top groove. The movable rod includes loop bar, interior pole and third elastic component, the one end of loop bar with curb plate fixed connection, the one end of interior pole with loop bar sliding connection, and be located in the loop bar, the other end of interior pole runs through logical groove, the one end of third elastic component with loop bar fixed connection, the other end of third elastic component with interior pole fixed connection, just the third elastic component is located in the loop bar. One end of the inner rod penetrating through the through groove is provided with a first inclined surface.
In this embodiment, when the main board body is installed and fixed, the movable rod is driven to slide along with the side plate sliding in the groove body, the inner rod is arranged in the casing rod at this time, the third elastic member is in a compressed state, when the side plate slides to a preset position and stops sliding, one end of the movable rod is contracted to align with the through groove at this time, because the third elastic member does not receive an extrusion force at this time, the third elastic member resets under the self restoring force, the inner rod is abutted to penetrate through the through groove, so that one end of the inner rod is abutted to the side wall of the ejector block, because the inner rod has a first inclined surface, the first inclined surface abuts to the ejector block under the self restoring force of the third elastic member, so that the ejector block rises, the tension spring extends, and the toggle member rotates around the pin shaft, and the tension spring resets until the jacking block is clamped into the jacking groove, so that the mainboard body is further effectively fixed, and the mainboard body is not easy to loosen. In addition, because the end of the inner rod penetrating through the through groove is provided with the first inclined surface, when the movable rod is withdrawn from the through groove, the inner rod can be abutted and held under the action of the self restoring force of the tension spring only by slightly pressing the first transverse plate so that the ejector block is separated from the ejector groove and simultaneously slightly extruding the inner rod until the inner rod is contacted with the first inclined surface on the ejector block and then stops pressing the first transverse plate, so that the inner rod can be abutted and held, the end of the inner rod with the first inclined surface is contracted into the through groove, the rod-shaped body is then utilized to abut and hold the inner rod contracted into the through groove until the inner rod is completely separated from the through groove, and then the main plate body is pulled to withdraw the inner rod from the through groove, so that the disassembly and assembly of the main plate body are realized, and the disassembly and assembly of the main plate body are simpler, And (4) the method is quick.
Furthermore, the positioning piece comprises a first connecting plate and a second connecting plate, the first connecting plate is fixedly connected with the second connecting plate, and the first connecting plate and the second connecting plate form a T-shaped structure.
In this embodiment, first even board with the second is even the board and is the setting of T type structure, can further promote the setting element with stability of connection between the constant head tank makes mainboard body is difficult not hard up more.
Further, the main board body is provided with an operational amplifier circuit and a voltage stabilizing circuit, the voltage stabilizing circuit comprises a power supply end VB, a first switch tube Q1, a second switch tube Q2, a resistor R1, a resistor R2 and a resistor R3, the input end of the first switch tube Q1 is connected with the power supply end VB, the first switch tube Q1 is connected with the ground end through the resistor R1 and the resistor R2 which are connected in series, and the terminal voltage of the output end of the first switch tube Q1 and the common end of the resistor R1 is used as the output voltage Vout of the voltage stabilizing circuit; the input end of the second switch tube Q2 is connected to the control end of the first switch tube Q1, the output end of the second switch tube Q2 is connected to the ground end, and the control end of the second switch tube Q2 is connected to the common end of the resistor R1 and the resistor R2; one end of the resistor R3 is connected with a power supply end VB, the other end of the resistor R3 is connected with a control end of the first switching tube Q1, the voltage of the resistor R2 is stabilized at a specific value through the adjustment effect of the second switching tube Q2 on the first switching tube Q1, and meanwhile, because the difference value between the total resistance value of the resistor R1 and the resistor R2 and the resistance value of a load resistor of a voltage stabilizing circuit exceeds a preset resistance value, the current passing through the resistor R1 and the resistor R2 is small and can be ignored compared with the load current, so that the current passing through the resistor R1 and the resistor R2 is less influenced by the load current, and the voltage of the resistor R2 is very stable, so that the output voltage is very stable.
The operational amplification circuit comprises a capacitor C1, a resistor R4, a resistor R5, a voltage stabilizing diode Dw and an operational amplifier U; the external input end is accessed by the non-inverting input end of an operational amplifier U, the inverting input end of the operational amplifier U is simultaneously connected with one ends of resistors R4 and R5, the other end of a resistor R4 is connected with the output end of the operational amplifier U, the other end of the resistor R5 is accessed to the cathode of a voltage stabilizing diode Dw and the anode of a capacitor C1 and is positioned as a zero reference point, the negative power source end of the operational amplifier U is accessed to the anode of the voltage stabilizing diode Dw and the cathode of the capacitor C1, and the whole circuit of the operational amplifier circuit is small in size and reliable in work.
While the invention has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (7)
1. A loose-proof PCBA mainboard is characterized in that,
the fixing device comprises a main board body, side boards, mounting seats, vertical boards and fixing components, wherein the side boards are arranged on two side walls of the main board body, an abutting groove is formed in the upper end of each side board, the number of the mounting seats is two, the vertical boards are arranged on the mounting seats, each vertical board is provided with a through hole, an annular groove located outside the through hole and a groove body matched with the side boards, and the fixing components are further arranged on the vertical boards;
each fixing component comprises a fixing column, a seat body, a supporting block and a rotating ring, one end of the fixing column is fixedly connected with the seat body, the other end of the fixing column penetrates through the through hole and is movably connected with the supporting block, the supporting block is arranged in the groove body, the rotating ring is in clearance fit with the annular groove, the rotating ring is sleeved outside the seat body, and threads on the inner wall of the rotating ring are matched with threads on the outer side wall of the seat body.
2. Anti-loosening PCBA motherboard as recited in claim 1,
the supporting block is internally provided with a plurality of hollow grooves and transverse grooves communicated with the hollow grooves, the number of the transverse grooves is multiple, the transverse grooves are distributed on the periphery of the hollow grooves in a circumferential mode, each fixing assembly further comprises a first adaptation block and a second adaptation block, the first adaptation block is fixedly connected with the fixing column and located in the hollow grooves, the first adaptation block is arranged in a truncated cone-shaped structure, the second adaptation block is arranged in the transverse grooves, and the inclined plane on the second adaptation block is matched with the inclined plane on the first adaptation block.
3. Anti-loosening PCBA board as in claim 2,
every fixed subassembly still includes first elastic component, the one end of first elastic component with pedestal fixed connection, the other end of first elastic component with riser fixed connection, just first elastic component cover is established the outside of fixed rod post.
4. Anti-loosening PCBA board as in claim 3,
each fixing component further comprises a baffle and a second elastic piece, the baffle is fixedly connected with the abutting block and is positioned inside the transverse groove, one end of the second elastic piece is fixedly connected with the baffle, and the other end of the second elastic piece is fixedly connected with the abutting block.
5. Anti-loosening PCBA motherboard as recited in claim 4,
the inner side wall of the abutting groove is provided with a plurality of clamping grooves which are distributed in a circumferential manner.
6. Anti-loosening PCBA motherboard as recited in claim 1,
each vertical plate is provided with a positioning groove, and each side plate is provided with a positioning piece which is mutually clamped with the positioning groove.
7. Anti-loosening PCBA motherboard as recited in claim 1,
the mainboard body is provided with an operational amplifier circuit and a voltage stabilizing circuit, the voltage stabilizing circuit comprises a power supply end VB, a first switch tube Q1, a second switch tube Q2, a resistor R1, a resistor R2 and a resistor R3, the input end of the first switch tube Q1 is connected with the power supply end VB, the first switch tube Q1 is connected with the ground end through the resistor R1 and the resistor R2 which are connected in series, the terminal voltage of the output end of the first switch tube Q1 and the common end of the resistor R1 is used as the output voltage Vout of the voltage stabilizing circuit, the input end of the second switch tube Q2 is connected with the control end of the first switch tube Q1, the output end of the second switch tube Q2 is connected with the ground end, and the control end of the second switch tube Q2 is connected with the common ends of the resistor R1 and the resistor R2; one end of the resistor R3 is connected with a power supply end VB, and the other end of the resistor R3 is connected with the control end of the first switching tube Q1;
the operational amplification circuit comprises a capacitor C1, a resistor R4, a resistor R5, a voltage stabilizing diode Dw and an operational amplifier U, wherein an external input end is accessed by a non-inverting input end of the operational amplifier U, a reverse input end of the operational amplifier U is simultaneously connected with one ends of resistors R4 and R5, the other end of the resistor R4 is connected with an output end of the operational amplifier U, the other end of the resistor R5 is accessed to a cathode of the voltage stabilizing diode Dw and an anode of a capacitor C1, and a negative power source end of the operational amplifier U is accessed to an anode of the voltage stabilizing diode Dw and a cathode of a capacitor C36.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011414093.4A CN112533431B (en) | 2020-12-04 | 2020-12-04 | Anti-loosening PCBA mainboard |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011414093.4A CN112533431B (en) | 2020-12-04 | 2020-12-04 | Anti-loosening PCBA mainboard |
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| CN112533431A true CN112533431A (en) | 2021-03-19 |
| CN112533431B CN112533431B (en) | 2021-08-24 |
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| CN204392087U (en) * | 2015-02-10 | 2015-06-10 | 北京经纬恒润科技有限公司 | A kind of voltage stabilizing circuit |
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| CN207358329U (en) * | 2017-09-13 | 2018-05-15 | 安徽恒信通智能科技有限公司 | One kind is used for integrated circuit board fixer |
| CN207753967U (en) * | 2017-11-16 | 2018-08-21 | 叶华雅 | A kind of easy to use and good fixing effect circuit board fixing device |
| CN207491415U (en) * | 2017-11-24 | 2018-06-12 | 江西联益电子科技有限公司 | A kind of erecting device of circuit board |
| CN210136453U (en) * | 2019-04-08 | 2020-03-10 | 南安紫鲸铃工业设计有限公司 | Computer mainboard fixing device for computer |
| CN210745229U (en) * | 2020-03-12 | 2020-06-12 | 深圳市华尔博思科技有限公司 | Anti-loosening mobile phone intelligent hardware |
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| CN112533431B (en) | 2021-08-24 |
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Denomination of invention: An anti loosening PCBA motherboard Effective date of registration: 20231211 Granted publication date: 20210824 Pledgee: Guanlan Sub Branch of Shenzhen Rural Commercial Bank Co.,Ltd. Pledgor: SHENZHEN ITZR TECHNOLOGY Co.,Ltd. Registration number: Y2023980070687 |
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