CN216816747U - Clamp for verifying level conversion chip - Google Patents

Abstract

The utility model relates to the technical field of chips, and discloses a clamp for verifying a level conversion chip, which comprises a PCB and a base, wherein a fixed seat is connected inside the PCB, a fixing device is arranged inside the base, the fixing device comprises an inserting rod and a movable block, when the inserting rod is inserted into the base, the fixed rod and a vertical rod are inserted into a deep groove, a compression spring drives an ejection block to push the sliding block to move towards the vertical center line direction of the inserting rod, so that the sliding block clamps the bottom end of a trapezoidal block at the top of the fixed rod, namely the fixed inserting rod, the bottom of the fixed seat is contacted with the top end of the movable block, when the PCB needs to be disassembled, the movable block is pressed, the sliding block is driven to move downwards by the ejection block, at the moment, the sliding block is squeezed to move towards the direction far away from the vertical center line of the inserting rod by the inclined plane of the vertical rod, and simultaneously the ejection block is driven to move towards the direction far away from the inserting rod, the inserted bar can be taken out, thereby achieving the purpose of quickly disassembling the PCB.

Description

Clamp for verifying level conversion chip

Technical Field

The utility model relates to the technical field of chips, in particular to a clamp for verifying a level conversion chip.

Background

In the design of a new generation of electronic circuit, along with the introduction of low voltage logic, the problem of inconsistent input and output logic often occurs in a system, so that the complexity of the system design is improved.

In order to guarantee the stability of level conversion chip during operation, and can not cause signal level conversion mistake, just need carry out the verification of level conversion chip performance, need chip pin and detection platform to correspond the contact point and detect when detecting level conversion chip, in the testing process, can cause the damage of certain degree to detecting with the PCB board, reduce life, change the maintenance and have inconvenience.

According to the utility model, the insertion rod penetrates through the inside of the fixing seat and is inserted into the inside of the base, the ejection block is pushed by the compression spring to push the sliding block to clamp the fixing rod, the PCB is fixed by the insertion rod, and when pressure is generated on the PCB during detection, the ejection spring is subjected to downward force, so that the PCB moves downward to slow down the impact force on the PCB, and the PCB can be taken out only by pressing the movable block downward when the PCB is replaced and maintained.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

Aiming at the defects of the prior art, the utility model provides the clamp for verifying the level conversion chip, which has the advantages of convenience in clamping and low cost and solves the problems of short service life and inconvenience in maintenance of a PCB (printed circuit board).

(II) technical scheme

In order to realize the purposes of convenient clamping and long service life, the utility model provides the following technical scheme: the utility model provides a verify anchor clamps of level conversion chip, includes PCB board and base, the internal connection of PCB board has the fixing base, the inside of base is provided with fixing device, fixing device includes inserted bar and movable block, the inside fixedly connected with dead lever of base, the inside fixedly connected with montant of base, the ejecting spring of inside fixedly connected with of base, the top fixedly connected with push pedal of ejecting spring, the inside fixedly connected with compression spring of movable block, the ejecting piece of compression spring's other end fixedly connected with, the inside swing joint of inserted bar has the sliding block.

Preferably, the PCB board includes a first power voltage, a second power voltage, a level conversion chip pin socket, a first capacitor, a first resistor, a second resistor, a third resistor, a fourth resistor, a second capacitor, a first ground pin, a second ground pin, a third ground pin, a triode, and a control signal device.

Preferably, the first power voltage and the second power voltage are respectively a power supply voltage of one point eight volts and three points three volts, the pin base of the level conversion chip is six pins for welding the level conversion chip to be tested on for verification, the pins correspond to the following steps that one pin is a pin of one point eight volts power supply terminal, the pin is connected with the first power voltage, filtering and voltage stabilization are carried out through a first capacitor, the capacitance value of the first capacitor is zero point one microfarad, the pin is a GND pin and is connected with a first grounding pin, the pin is a signal input pin and is an input pin of a pin power supply signal, the pin is connected with the second power voltage, namely, the signal with the level of one point eight volts is connected in series through a first resistance resistor, the resistance value of the first resistance resistor is thirty three ohms, the first capacitor is connected with a second grounding pin, the pin is a signal output pin, the pin is pulled up to three points three volts through a fourth resistance resistor to output the pin for supplying the power supply signal, the signal with three points and three volts of electric level is connected in series through a third resistor, the resistance value of the third resistor is thirty-three ohms, the five pins are OE pins, an output enabling pin is pulled up to one point and eight volts through a second resistor, the resistance value of the second resistor is four points and seven K ohms, the six pins are pins of a power transmission end and are connected with a second power supply voltage, filtering and voltage stabilizing are carried out through a second capacitor, the capacitance value of the second capacitor is zero point and one microfarad, and the second capacitor is connected with a third grounding pin.

Preferably, the triode is used for switching, the control signaler is used for controlling the on and off of the triode, when the control signaler is in a high level, the triode is in a short circuit, when the control signaler is in a low level, the triode is switched off, and when the control signaler is in a short circuit, the triode is in an open circuit, and the control signaler is used for controlling the verification of the output voltage of the six pins in a short circuit state and an open circuit state.

Preferably, the inserted bar runs through inside the fixing base, and the bottom of inserted bar has seted up the deep trouth, and dead lever and montant insert the deep trouth when the inserted bar inserts inside the base, and the left and right sides at the top of inserted bar all is provided with the inclined plane, and the movable block is located the top of the inside push pedal of base.

Preferably, the top end fixedly connected with trapezoidal piece of dead lever, the top of montant and sliding block sets up to the inclined plane.

Preferably, the montant is located the left and right sides of dead lever respectively, and the inclined plane and the sliding block cooperation of montant, during the downstream of sliding block, through the inclined plane of montant with the sliding block to keeping away from the perpendicular axle center of inserted bar one side removal, the inclined plane and the inclined plane cooperation of ejecting piece of inserted bar bottom, the inserted bar promotes ejecting piece through the inclined plane when inserting the base downwards, makes further downwards insert.

Preferably, one side of the ejection block, which is close to the vertical center line of the inserted link, is provided with an inclined surface.

(III) advantageous effects

Compared with the prior art, the utility model provides a clamp for verifying a level conversion chip, which has the following beneficial effects:

1. this verify anchor clamps of level conversion chip, through inside running through the fixing base with the inserted bar, dead lever and montant insert the deep trouth when the inserted bar inserts inside the base, compression spring drives ejecting piece and promotes the sliding block and move to the perpendicular center line direction of inserted bar, make the sliding block the trapezoidal piece bottom at the top of dead lever, fix the inserted bar promptly, and the bottom of fixing base and the top contact of movable block, when needing to dismantle the PCB board, press the movable block, drive the inserted bar downstream through ejecting piece, the sliding block extrudees to the removal of the direction of keeping away from the perpendicular center line of inserted bar through the inclined plane of montant this moment, drive ejecting piece simultaneously and remove to the direction of keeping away from the inserted bar, can take out the inserted bar, thereby the effect of quick dismantlement PCB board has been reached.

2. This verify anchor clamps of level conversion chip, through with level conversion chip and level conversion chip pin base fixed connection, at first for the first mains voltage of three-pin input, the voltage is one bit eight volts, for six pin input second mains voltage, the power is three points three volts, carry out signal input for the three-pin again, signal one bit eight volt's signal input this moment, then convert three points three volts's signal output into at six pins, pass through triode short-circuit connection with six pins, communication interruption this moment, then with the triode disconnection, communication resumes again, repeated many times realize many times and verify, guarantee that the function of level conversion chip is normal and stable, this scheme is realized simply, thereby reached effect with low costs.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is an enlarged view of a portion of the structure A of FIG. 1 according to the present invention;

FIG. 3 is a schematic diagram of a PCB structure according to the present invention

FIG. 4 is a schematic diagram of a PCB board of the present invention.

In the figure: 1. a PCB board; 101. a first power supply voltage; 102. a second power supply voltage; 103. a level conversion chip pin base; 104. a first capacitor; 105. a first resistor; 106. a second resistor; 107. a third resistor; 108. a fourth resistor; 109. a second capacitor; 110. a first ground pin; 111. a second ground pin; 112. a third ground pin; 113. a triode; 114. a control signal generator; 2. a base; 3. a fixed seat; 4. a fixing device; 401. inserting a rod; 402. a movable block; 403. fixing the rod; 404. a vertical rod; 405. ejecting a spring; 406. pushing the plate; 407. a compression spring; 408. ejecting a block; 409. and a slider.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-4, a fixture for verifying a level shift chip includes a PCB board 1 and a base 2, the PCB board 1 includes a first power voltage 101, a second power voltage 102, a level shift chip pin base 103, a first capacitor 104, a first resistor 105, a second resistor 106, a third resistor 107, a fourth resistor 108, a second capacitor 109, a first ground pin 110, a second ground pin 111, a third ground pin 112, a transistor 113 and a control signal device 114;

the first power voltage 101 and the second power voltage 102 are respectively one-point eight volts and three-point three volts of power supply voltage;

the pin seat 103 of the level conversion chip is six pins, which are used for welding the level conversion chip to be tested on for verification, the pins correspond to a pin with a one-point eight-volt power supply end, connecting a first power supply voltage 101, filtering and stabilizing the capacitance value of the first capacitor 104 into a zero-point one-microfarad through a first capacitor 104, a pin with a GND (ground) end, connecting a first grounding pin 110, a pin with a signal input pin and a pin with a power supply signal input pin, connecting a second power supply voltage 102, namely a signal with a level of one point eight volts, connecting the first resistor 105 in series through a first resistor 105, connecting the first resistor 105 with thirty-three ohms, connecting the first capacitor 104 with a second grounding pin 111, and connecting the fourth pin with a signal output pin, pulling up to three points three volts through a fourth resistor 108, connecting the fourth pin with a power supply signal output pin, namely a signal with a level of three points three volts, connecting the third resistor 107 in series, the third resistor 107 has a resistance of thirty-three ohms, five pins are OE pins, an output enable pin is pulled up to a point of eight volts through the second resistor 106, the second resistor 106 has a resistance of four points and seven K ohms, six pins are power transmission pins connected with the second power supply voltage 102, filtering and voltage stabilization are performed through the second capacitor 109, the second capacitor 109 has a capacitance of zero point one microfarad and is connected with the third ground pin 112, and the triode 113 is used for switching.

The control signal device 114 is used for controlling the on and off of the triode 113, when the control signal device 114 is at a high level, the hexapod is in a short circuit state, and when the control signal device 114 is at a low level, the hexapod is in an open circuit state, and the hexapod is used for controlling the verification in the states of the hexapod output voltage short circuit and the open circuit.

The inner part of the PCB 1 is connected with a fixed seat 3, the inner part of the base 2 is provided with a fixed device 4, the fixed device 4 comprises an inserting rod 401 and a movable block 402, the inner part of the base 2 is fixedly connected with a fixed rod 403, the inner part of the base 2 is fixedly connected with a vertical rod 404, the inner part of the base 2 is fixedly connected with an ejecting spring 405, the top end of the ejecting spring 405 is fixedly connected with a push plate 406, the inserting rod 401 penetrates through the inner part of the fixed seat 3, the bottom of the inserting rod 401 is provided with a deep groove, the fixed rod 403 and the vertical rod 404 are inserted into the deep groove when the inserting rod 401 is inserted into the base 2, the left side and the right side of the top part of the inserting rod 401 are both provided with inclined planes, the movable block 402 is positioned at the top end of the push plate 406 in the base 2, the inner part of the movable block 402 is fixedly connected with a compression spring 407, the other end of the compression spring 407 is fixedly connected with an ejecting block 408, one side of the ejecting block 408 close to the vertical central line of the inserting rod 401 is arranged as an inclined plane, the inner part of the inserting rod 401 is movably connected with a sliding block 409, the top fixedly connected with trapezoidal piece of dead lever 403, the top of montant 404 and sliding block 409 sets up to the inclined plane, montant 404 is located the left and right sides of dead lever 403 respectively, the inclined plane and the sliding block 409 cooperation of montant 404, during the downstream of sliding block 409, the inclined plane through montant 404 with the sliding block 409 to keeping away from the one side of inserted bar 401 vertical axis and remove, the inclined plane and the inclined plane cooperation of ejecting piece 408 of inserted bar 401 bottom, the ejecting piece 408 is promoted through the inclined plane when inserted bar 401 inserts base 2 downwards, make further downwards insert.

The working principle is that when the inserted link 401 penetrates through the inserted link 401 in the fixed seat 3 and is inserted into the base 2, the inserted link 401 pushes the ejection block 408 towards two sides through the inclined surface, so that the inserted link 401 further moves downwards, the fixed rod 403 and the vertical rod 404 are inserted into the deep groove, the compression spring 407 drives the ejection block 408 to be inserted into the inserted link 401 to limit the movement of the inserted link 401, the ejection block 408 pushes the sliding block 409 to move towards the vertical center line direction of the inserted link 401, so that the sliding block 409 blocks the bottom end of the trapezoidal block at the top of the fixed rod 403, namely, the inserted link 401 is further fixed, the ejection spring 405 drives the push plate 406 to push the inserted link 401 and the movable block 402 upwards, and at the moment, the bottom of the fixed seat 3 is in contact with the top end of the movable block 402, namely, the PCB 1 is fixed, when the PCB 1 needs to be disassembled, the movable block 402 is pressed, the movable block 402 drives the push plate 406 to move downwards, and simultaneously, the inserted link 401 is driven downwards by the ejection block 408, the inserted link 401 drives the sliding block 409 to move downwards, at this time, the sliding block 409 is extruded to move in a direction away from the vertical center line of the inserted link 401 through the inclined surface of the vertical rod 404, and simultaneously the ejection block 408 is driven to move in a direction away from the inserted link 401, so that the inserted link 401 can be taken out, and the purpose of quickly disassembling the PCB 1 is achieved;

the level conversion chip is fixedly connected with a level conversion chip pin base 103 correspondingly, first power supply voltage 101 is input to the three pins, the voltage is one point eight volts, second power supply voltage 102 is input to the six pins, the power supply is three points three volts, then signal input is carried out to the three pins, signal input of one point eight volts is carried out at the moment, signal output of three points three volts is converted to the six pins, the six pins are connected through a triode 113 in a short circuit mode, communication is interrupted at the moment, the triode 113 is disconnected, communication is recovered, multiple times of verification are repeatedly achieved, normal and stable functions of the level conversion chip are guaranteed, the scheme is simple to achieve, the manufacturing cost of the PCB board 1 is low, and the purpose of low cost is achieved.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims (7)

1. The utility model provides a verify anchor clamps of level shift chip, includes PCB board (1) and base (2), its characterized in that: a fixed seat (3) is connected inside the PCB (1), and a fixing device (4) is arranged inside the base (2);

fixing device (4) are including inserted bar (401) and movable block (402), the inside fixedly connected with dead lever (403) of base (2), the inside fixedly connected with montant (404) of base (2), the inside fixedly connected with ejection spring (405) of base (2), the top fixedly connected with push pedal (406) of ejection spring (405), the inside fixedly connected with compression spring (407) of movable block (402), the other end fixedly connected with ejection block (408) of compression spring (407), the inside swing joint of inserted bar (401) has sliding block (409).

2. The fixture for verifying a level shift chip as claimed in claim 1, wherein: the PCB (1) comprises a first power supply voltage (101), a second power supply voltage (102), a level conversion chip pin base (103), a first capacitor (104), a first resistor (105), a second resistor (106), a third resistor (107), a fourth resistor (108), a second capacitor (109), a first grounding pin (110), a second grounding pin (111), a third grounding pin (112), a triode (113) and a control signal device (114).

3. The fixture for verifying a level shift chip as claimed in claim 2, wherein: the first power supply voltage (101) and the second power supply voltage (102) are respectively a power supply voltage of one point eight volts and a power supply voltage of three points three volts, the level conversion chip pin base (103) is provided with six pins which correspond to the following pins, one pin is a power supply terminal pin of one point eight volts and is connected with the first power supply voltage (101), the second pin is a GND pin and is connected with a first grounding pin (110), the three pins are signal input pins and are connected with the second power supply voltage (102), the first resistor (105) is in resistor series connection through a first resistor (105), the resistance value of the first resistor (105) is thirty three ohms, the four pins are signal output pins, the five pins are OE pins and are output enable pins, the resistance value of the second resistor (106) is four points seven K ohms, the six pins are power transmission terminal pins and are connected with the second power supply voltage (102), the first capacitor (104) is connected with the second grounding pin (111), and the capacitance value of the second capacitor (109) is zero point one microfarad, and a third ground pin (112) is connected.

4. The fixture for verifying a level shift chip as claimed in claim 1, wherein: the utility model discloses a push pedal (406) of base (2) is fixed in the fixing base, the fixing base is passed through inside inserted bar (401), and the deep groove has been seted up to the bottom of inserted bar (401), and the left and right sides at the top of inserted bar (401) all is provided with the inclined plane, and movable block (402) are located the top of the inside push pedal (406) of base (2).

5. The fixture for verifying a level shift chip as claimed in claim 1, wherein: the top end of the fixed rod (403) is fixedly connected with a trapezoidal block, and the top ends of the vertical rod (404) and the sliding block (409) are arranged to be inclined planes.

6. The fixture for verifying a level shift chip as claimed in claim 1, wherein: the vertical rods (404) are respectively positioned at the left side and the right side of the fixed rod (403), the inclined surfaces of the vertical rods (404) are matched with the sliding block (409), and the inclined surfaces at the bottom of the inserted rod (401) are matched with the inclined surfaces of the ejection block (408).

7. The fixture for verifying a level shift chip as claimed in claim 1, wherein: one side of the ejection block (408) close to the vertical center line of the insert rod (401) is provided with an inclined surface.

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