CN112014653B - Low-temperature test capability verification equipment for electrical and electronic products - Google Patents
Low-temperature test capability verification equipment for electrical and electronic products Download PDFInfo
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- CN112014653B CN112014653B CN201910454383.2A CN201910454383A CN112014653B CN 112014653 B CN112014653 B CN 112014653B CN 201910454383 A CN201910454383 A CN 201910454383A CN 112014653 B CN112014653 B CN 112014653B
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- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/003—Environmental or reliability tests
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Abstract
The invention belongs to the field of verification equipment, in particular to low-temperature test capability verification equipment for electrical and electronic products, which aims at the problem that the existing electronic equipment can only carry out low-temperature test under the condition of no power supply and cannot obtain accurate low-temperature test results.
Description
Technical Field
The invention relates to the technical field of verification equipment, in particular to low-temperature test capability verification equipment for an electrical and electronic product.
Background
Environmental tests are a type of reliability test that investigates the impact of the surrounding environment of use on the function and performance of a material and product. Temperature is one of three basic environmental factors, and sometimes does not affect the use of the product. Studies have shown that 40% of product field failures are temperature dependent. Low temperature testing of electrical and electronic products is used to verify the ability of components, equipment and other products to be used, transported or stored in a low temperature environment. The application range of the low-temperature test is very wide, and the low-temperature test is carried out on electrical and electronic products such as spaceflight, ships, household appliances, electronic components and the like.
The conventional electronic equipment can only perform low-temperature test under the condition of no power-on, and cannot obtain accurate low-temperature test results, so we propose a low-temperature test capability verification device for an electrical and electronic product, which is used for solving the problems.
Disclosure of Invention
Based on the technical problem that the existing electronic equipment can only perform low-temperature test under the condition of no power on and cannot obtain accurate low-temperature test results in the background technology, the invention provides low-temperature test capability verification equipment for an electrical and electronic product.
The invention provides low-temperature test capability verification equipment for an electrical and electronic product, which comprises an experiment box, wherein support pipes are fixedly arranged on the inner walls of the two sides of the experiment box, one ends of the two support pipes, which are far away from each other, respectively penetrate through the inner walls of the two sides of the experiment box and are communicated with the outside, one end, which is close to each other, of the two support pipes is fixedly provided with a same containing cover, two power receiving plates are symmetrically and slidingly connected in the containing cover, one sides, which are far away from each other, of the two power receiving plates are fixedly provided with wires, one ends, which are far away from each other, respectively penetrate through the two support pipes and extend to the outside of the experiment box, an air outlet pipe is fixedly arranged on the inner wall of the bottom of one side of the experiment box in a sealing manner, one end of the air outlet pipe extends to the outside of the experiment box, a cover plate is clamped at the top of the experiment box in a sealing manner, a movable seat is fixedly arranged on one side of the cover, one side of the movable seat is provided with a mounting groove, an L-shaped pipe is fixedly arranged on the inner wall of one side of the mounting groove in a sealing manner, one end of the L-shaped pipe penetrates through and extends into the experiment box, one end of the cover plate is fixedly arranged on the inner wall of the mounting groove, one end of the cover plate is fixedly arranged on the cover plate, one end, which is fixedly connected with an argon inlet pipe and extends to the outside of an argon storage tank, and is fixedly connected to the air storage tank, and is fixedly arranged on the sealing meter.
Preferably, the fixed plate is fixedly installed on the inner wall of the installation groove, the air inlet pipe penetrates through the fixed plate and is fixedly connected with the fixed plate in a sealing mode, a limiting pipe is fixedly installed on one side of the fixed plate, one end of the air inlet pipe extends into the limiting pipe, a movable pipe is connected to the limiting pipe in a sealing sliding mode, a corrugated pipe is fixedly installed at one end of the movable pipe in a sealing mode, the other end of the L-shaped pipe extends into the corrugated pipe and is fixedly connected with the inner wall of the corrugated pipe in a sealing mode, and the air inlet pipe is communicated with the L-shaped pipe.
Preferably, one end of the moving pipe is fixedly provided with a connecting plate in a sealing manner, the other end of the corrugated pipe is fixedly connected with the other side of the connecting plate in a sealing manner, the top of the connecting plate is fixedly provided with a push rod, the inner wall of the top of the mounting groove is provided with a moving hole, the top end of the push rod penetrates through the moving hole and extends to the upper part of the moving seat, and the connecting plate, the air inlet pipe and the air outlet pipe are fixedly provided with unidirectional pipes in a sealing manner, so that the trend of argon gas can be limited.
Preferably, sealing fixed mounting has the sealing ring on the inner wall of unidirectional tube, sealing laminating has the spheroid on the inner wall of sealing ring, the thread groove has been seted up to one side of spheroid, and sliding connection has ball on the inner wall of thread groove, ball's one end extends to unidirectional tube and fixed mounting has the connecting rod, and connecting rod and unidirectional tube's inner wall fixed connection can realize carrying out unidirectional communication's purpose to unidirectional tube.
Preferably, the ball screw is threaded with a ball screw nut, the ball screw nut is rotationally connected with the inner wall of the thread groove, the connecting ring is fixedly installed on the inner wall of the thread groove, the ball screw penetrates through the connecting ring, the ball screw is sleeved with a limiting spring, the limiting spring is located between the connecting ring and the ball screw nut, two ends of the limiting spring are fixedly connected with one sides of the ball screw nut and the connecting ring respectively, the ball body can be elastically limited by the limiting spring, and the ball body is in sealing fit with the sealing ring under the condition of no stress.
Preferably, fixed mounting has the dead lever on the inner wall of spacing pipe, the one end of dead lever extends to in the removal pipe, fixed mounting has the bracing piece on the inner wall of removal pipe, and bracing piece one side symmetry fixed mounting has two connecting rods, sliding connection has same installation pole on two connecting rods, one side symmetry fixed mounting of installation pole has two stay cords, and the one end of two connecting rods all extends to in the spacing pipe and fixed mounting has same spacing ring, in the spacing pipe, spacing ring cover is established on the dead lever, symmetrical rotation is connected with two gears on the inner wall of spacing ring, and two gears are located the top and the below of dead lever respectively, the equal fixed mounting in top and the bottom of dead lever has the rack, and two gears mesh with two racks respectively, can slide spacing to spacing pipe, provide pressure to extension spring simultaneously.
Preferably, the connecting rod is sleeved with the movable rings, the top end and the bottom end of the mounting rod are fixedly connected with the two movable rings respectively, the connecting rod is sleeved with the extension spring, the extension spring is located on one side of the movable rings, two ends of the extension spring are fixedly connected with the supporting rod and the movable rings respectively, and the extension spring can be used for conveniently limiting the movable rings.
Preferably, the inner wall of the limiting ring is symmetrically and rotationally connected with two mounting shafts, two gears are respectively and fixedly sleeved on the two mounting shafts, one end of the pull rope extends to the limiting ring and is fixedly wound on the mounting shafts, a torsion spring is sleeved on the mounting shafts and positioned on one side of the gears, two ends of the torsion spring are respectively and fixedly connected with one side of the gears and one side inner wall of the limiting ring, and the gears can be driven to rotate reversely by the torsion spring, so that the movable pipe can reset.
The beneficial effects of the invention are as follows:
firstly, a push rod is transversely reciprocated to drive a connecting plate to transversely reciprocate, so that a moving pipe moves along with the connecting plate, when the moving pipe moves towards a fixed plate, gas in a limiting pipe and the moving pipe can apply pressure to a ball body positioned on the connecting plate, so that the ball body moves, the gas in the limiting pipe can be conveyed into a corrugated pipe and then enters an experiment box through an L-shaped pipe, and when the connecting plate moves, a gear can be driven to rotate, a pull rope is wound on an installation shaft, and meanwhile, a torsion spring and an extension spring are in a stressed state;
when connecting plate and spacing pipe contact, can release the push rod this moment, extension spring and torsion spring all can reset, so just can drive the removal pipe and carry out reverse movement, so can make spacing pipe and remove and form negative pressure state in the pipe, therefore be located the spheroid of intake pipe and will remove under the effect of negative pressure force, make the intake pipe be in open state, can carry the argon gas in the argon gas storage jar to spacing pipe and remove in the pipe this moment, operate in the moving pipe in repetition, so can constantly fill argon gas to the experiment incasement, can be rapid cool down to the electron device, make the temperature of electron device drop rapidly, can obtain the temperature in the experiment case through the thermometer simultaneously, make the electron device can remain in low temperature department all the time.
The invention has simple operation, and can continuously convey argon gas into the experiment box by repeatedly moving the moving tube, so that the electronic equipment is in a lower temperature, and the electronic equipment can be detected when in work, so that the electronic equipment can be comprehensively subjected to low-temperature test, and an accurate low-temperature test result is obtained.
Drawings
Fig. 1 is a front view of a structure of a low-temperature test capability verification device for an electrical and electronic product according to the present invention;
FIG. 2 is a front view of a mobile seat structure of a low-temperature test capability verification device for an electrical and electronic product according to the present invention;
FIG. 3 is a front view of a unidirectional tube structure of a device for verifying the low-temperature test capability of an electrical and electronic product according to the present invention;
FIG. 4 is a side view of a stop collar structure of a low temperature test capability verification device for electrical and electronic products according to the present invention;
FIG. 5 is an enlarged view of structure A of a low-temperature test capability verification device for electrical and electronic products according to the present invention;
fig. 6 is an enlarged view of a B structure of a low-temperature test capability verification device for an electrical and electronic product according to the present invention.
In the figure: 1 experiment box, 2 supporting tubes, 3 holding covers, 4 electric connection plates, 5 electric wires, 6 air outlet pipes, 7 cover plates, 8 moving seats, 9 thermometers, 10 air inlet pipes, 11L pipes, 12 push rods, 13 mounting grooves, 14 fixing plates, 15 limiting pipes, 16 fixing rods, 17 moving pipes, 18 connecting plates, 19 moving holes, 20 connecting rods, 21 mounting rods, 22 moving rings, 23 stretching springs, 24 pull ropes, 25 unidirectional pipes, 26 corrugated pipes, 27 racks, 28 limiting rings, 29 gears, 30 sealing rings, 31 spheres, 32 ball screws, 33 ball screw nuts, 34 limiting springs and 35 torsion springs.
Detailed Description
The invention is further illustrated below in connection with specific embodiments.
Examples
Referring to fig. 1-5, in this embodiment, an apparatus for verifying the low-temperature test capability of an electrical and electronic product is provided, which comprises an experiment box 1, support tubes 2 are fixedly installed on inner walls of two sides of the experiment box 1, one ends of the two support tubes 2, which are far away from each other, respectively penetrate through inner walls of two sides of the experiment box 1 and are communicated with the outside, one end of the two support tubes 2, which is close to each other, is fixedly installed with a holding cover 3, two electric connection plates 4 are symmetrically and slidingly connected in the holding cover 3, one sides of the two electric connection plates 4, which are far away from each other, are fixedly installed with electric wires 5, one ends of the two electric wires 5, which are far away from each other, respectively penetrate through the two support tubes 2 and extend to the outside of the experiment box 1, an air outlet tube 6 is fixedly installed on inner wall of the bottom of one side of the experiment box 1, one end of the air outlet tube 6 extends to the outside of the experiment box 1, a cover plate 7 is clamped at the top of the experiment box 1 in a sealing manner, the movable seat 8 is fixedly arranged on one side of the top of the cover plate 7, the mounting groove 13 is arranged on one side of the movable seat 8, the L-shaped tube 11 is fixedly arranged on the inner wall of one side of the mounting groove 13 in a sealing way, one end of the L-shaped tube 11 penetrates through the cover plate 7 and extends into the experiment box 1, the air inlet tube 10 is fixedly arranged on the inner wall of the mounting groove 13 in a sealing way, one end of the air inlet tube 10 extends to the outer side of the mounting groove 13 and is fixedly connected with the argon storage tank in a sealing way, argon is filled in the argon storage tank, the thermometer 9 is clamped on the cover plate 7 in a sealing way, the push rod 12 is transversely reciprocated firstly, the connecting plate 18 is driven to transversely reciprocate, so that the movable tube 17 moves along with the connecting plate 18, when the movable tube 17 moves towards the fixed plate 14, the limiting tube 15 and the gas in the movable tube 17 exert pressure on the ball 31 on the connecting plate 18 so that the ball 31 moves, the gas in the limiting tube 15 is conveyed into the corrugated tube 26, then enters the experiment box 1 through the L-shaped tube 11, and when the connecting plate 18 moves, the gear 29 can be driven to rotate, so that the pull rope 24 is wound on the mounting shaft, simultaneously the torsion spring 35 and the tension spring 23 are in a stress state, when the connecting plate 18 contacts with the limiting tube 15, the push rod 12 can be released, the tension spring 23 and the torsion spring 35 are reset, so that the moving tube 17 can be driven to move reversely, the limiting tube 15 and the moving tube 17 form a negative pressure state, the ball 31 in the air inlet tube 10 can move under the action of the negative pressure, the air inlet tube 10 is in an open state, at the moment, argon gas in the argon gas storage tank can be conveyed into the limiting tube 15 and the moving tube 17, the electronic device can be rapidly cooled down by continuously filling the argon gas into the experiment box 1, the electronic device can be rapidly cooled, and meanwhile, the electronic device can be accurately tested by the temperature meter 9, and the electronic device can be accurately tested by the electronic device in the experiment box 1, and the electronic device can be accurately tested by the electronic device in the experiment box at the low temperature, and the experiment box can be completely tested by the low temperature device.
In this embodiment, the inner wall of the installation groove 13 is fixedly provided with the fixing plate 14, the air inlet pipe 10 penetrates through the fixing plate 14 and is fixedly connected with the fixing plate 14 in a sealing manner, one side of the fixing plate 14 is fixedly provided with the limiting pipe 15, one end of the air inlet pipe 10 extends into the limiting pipe 15, the limiting pipe 15 is connected with the moving pipe 17 in a sealing sliding manner, one end of the moving pipe 17 is fixedly provided with the corrugated pipe 26 in a sealing manner, the other end of the L-shaped pipe 11 extends into the corrugated pipe 26 and is fixedly connected with the inner wall of the corrugated pipe 26 in a sealing manner, and the air inlet pipe 10 is communicated with the L-shaped pipe 11.
In this embodiment, a connecting plate 18 is fixedly installed at one end of the moving tube 17 in a sealing manner, the other end of the bellows 26 is fixedly connected with the other side of the connecting plate 18 in a sealing manner, a push rod 12 is fixedly installed at the top of the connecting plate 18, a moving hole 19 is formed in the inner wall of the top of the mounting groove 13, the top end of the push rod 12 penetrates through the moving hole 19 and extends to the upper side of the moving seat 8, and a unidirectional tube 25 is fixedly installed on the connecting plate 18, the air inlet tube 10 and the air outlet tube 6 in a sealing manner, so that the trend of argon gas can be limited.
In this embodiment, sealing ring 30 is fixed and sealed on the inner wall of unidirectional tube 25, sealing laminating has spheroid 31 on the inner wall of sealing ring 30, and the thread groove has been seted up to one side of spheroid 31, and sliding connection has ball screw 32 on the inner wall of thread groove, and ball screw 32's one end extends to unidirectional tube 25 in and fixed mounting has the connecting rod, and connecting rod and unidirectional tube 25's inner wall fixed connection can realize carrying out unidirectional communication's purpose to unidirectional tube 25.
In this embodiment, the ball screw 32 is threaded with the ball screw nut 33, and the ball screw nut 33 rotates with the inner wall of screw groove to be connected, fixedly installed on the inner wall of screw groove has the go-between, and the ball screw 32 runs through the go-between, the cover is equipped with spacing spring 34 on the ball screw 32, spacing spring 34 is located between go-between and the ball screw nut 33, the both ends of spacing spring 34 respectively with one side fixed connection of ball screw nut 33 and go-between, utilize spacing spring 34 can carry out elasticity spacing to spheroid 31 for spheroid 31 is sealed laminating with sealing ring 30 under the unstressed condition.
In this embodiment, the fixed rod 16 is fixedly installed on the inner wall of the limiting tube 15, one end of the fixed rod 16 extends into the moving tube 17, the supporting rod is fixedly installed on the inner wall of the moving tube 17, two connecting rods 20 are symmetrically and fixedly installed on one side of the supporting rod, the same installation rod 21 is slidingly connected on the two connecting rods 20, two pull ropes 24 are symmetrically and fixedly installed on one side of the installation rod 21, one ends of the two connecting rods 20 extend into the limiting tube 15 and are fixedly installed with the same limiting ring 28, the limiting tube 15 is internally sleeved with the limiting ring 28 on the fixed rod 16, two gears 29 are symmetrically and rotatably connected on the inner wall of the limiting ring 28, the two gears 29 are respectively located above and below the fixed rod 16, racks 27 are fixedly installed on the top and the bottom of the fixed rod 16, the two gears 29 are respectively meshed with the two racks 27, the limiting tube 17 can be slidingly limited, and meanwhile, and pressure is provided for the stretching spring 23.
In this embodiment, the movable rings 22 are sleeved on the connecting rod 20, the top end and the bottom end of the mounting rod 21 are respectively and fixedly connected with the two movable rings 22, the connecting rod 20 is sleeved with the extension spring 23, the extension spring 23 is located at one side of the movable rings 22, two ends of the extension spring 23 are respectively and fixedly connected with the supporting rod and the movable rings 22, and the movable rings 22 can be conveniently limited by the extension spring 23.
In this embodiment, two installation shafts are symmetrically and rotatably connected to the inner wall of the limiting ring 28, two gears 29 are respectively and fixedly sleeved on the two installation shafts, one end of the pull rope 24 extends into the limiting ring 28 and is fixedly wound on the installation shafts, a torsion spring 35 is sleeved on the installation shafts, the torsion spring 35 is located on one side of the gears 29, two ends of the torsion spring 35 are respectively and fixedly connected with one side of the gears 29 and one side inner wall of the limiting ring 28, and the gears 29 can be driven to rotate reversely by the torsion spring 35, so that the movable pipe 17 can be reset.
In this embodiment, firstly, the electronic device is placed in the accommodating cover 3, and both the two power receiving plates 4 are connected with the electronic device, then the electric wire 5 is externally connected with a power supply, so that the electronic device is electrified and works, meanwhile, the cover plate 7 is clamped with the experiment box 1 in a sealing way, at this time, the push rod 12 can be transversely reciprocated, the connecting plate 18 is driven to transversely reciprocate, therefore, the moving tube 17 moves along with the connecting plate 18, when the moving tube 17 moves towards the fixed plate 14, at this time, the limiting tube 15 and the gas in the moving tube 17 exert pressure on the ball 31 positioned on the connecting plate 18, so that the ball 31 moves, when the ball 31 moves, the ball screw nut 33 can rotate, so that the limiting spring 34 is in a stressed state until the ball 31 is separated from the sealing ring 30, at this time, the gas positioned in the limiting tube 15 can be conveyed into the bellows 26, then enters the experiment box 1 through the L-shaped tube 11, and when the connecting plate 18 moves, the gear 29 can be driven to rotate, so that the pull rope 24 is wound on the mounting shaft, at the same time, the torsion spring 35 and the tension spring 23 can be repeatedly arranged in the air inlet tube 17 and the air inlet tube 17 can be repeatedly moved in the stressed state, and the stressed state, the ball screw nut 33 can be rotated, the air inlet tube 17 can be repeatedly contacted with the ball screw nut 33, the air inlet tube 17 can be in the stressed state, and the stressed state, the stressed state can be released, and the stressed by the air can be stressed by the air in the air tube 17, and the stressed state, and the air can be repeatedly stressed by the air in the limiting tube 15, and the air tube 18, and the air can be moved and the experiment box 1, and the state, and the device. So can be constantly to filling argon gas in the experiment case 1, and be located the air in the experiment case 1 and can be constantly receive the extrusion and enter into in the outlet duct 6, the spheroid 31 that is located in the outlet duct 6 this moment can receive the pressure and remove, make out that the trachea 6 is in open condition, so can discharge air by outlet duct 6, make the experiment incasement be full of argon gas, can be quick cool down to the electron device, make the temperature of electron device drop rapidly, can obtain the temperature in the experiment case 1 through thermometer 9 simultaneously, make electronic equipment be in lower temperature, so can realize that electronic equipment just can detect when the work, so can carry out the low temperature test to equipment electron device comprehensively, consequently obtain accurate low temperature test result.
The foregoing is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art, who is within the scope of the present invention, should make equivalent substitutions or modifications according to the technical scheme of the present invention and the inventive concept thereof, and should be covered by the scope of the present invention.
Claims (3)
1. The utility model provides an electrician electronic product low temperature test ability verification equipment, includes experiment case (1), its characterized in that, all fixed mounting has stay tube (2) on the both sides inner wall of experiment case (1), and the one end that two stay tubes (2) kept away from each other runs through the both sides inner wall of experiment case (1) respectively and is linked together with the external world, the one end fixed mounting that two stay tubes (2) are close to each other has same cover (3) that holds, hold cover (3) in symmetry sliding connection have two electric connection board (4), and the one side that two electric connection board (4) kept away from each other all fixed mounting have electric wire (5), and the one end that two electric wire (5) kept away from each other runs through two stay tubes (2) respectively and extends to the outside of experiment case (1), sealed fixed mounting has outlet duct (6) on the inner wall of one side bottom of experiment case (1), the one end of outlet duct (6) extends to the outside of experiment case (1), top sealed card that is close to each other has apron (7), and one side of apron (7) is fixed mounting has moving seat (8), one side (13) is equipped with one side of installing groove (13) and is equipped with one side of the sealed type (11) and extends to the inside of the experiment case (1), an air inlet pipe (10) is fixedly installed on the inner wall of the installation groove (13) in a sealing way, one end of the air inlet pipe (10) extends to the outer side of the installation groove (13) and is fixedly connected with an argon storage tank in a sealing way, argon is arranged in the argon storage tank, a thermometer (9) is fixedly installed on the cover plate (7) in a sealing way, a fixing plate (14) is fixedly installed on the inner wall of the installation groove (13), the air inlet pipe (10) penetrates through the fixing plate (14) and is fixedly connected with the fixing plate (14) in a sealing way, a limiting pipe (15) is fixedly installed on one side of the fixing plate (14), one end of the air inlet pipe (10) extends to the inside of the limiting pipe (15), a moving pipe (17) is connected to the limiting pipe (15) in a sealing sliding way, one end of the moving pipe (17) is fixedly connected with a corrugated pipe (26), the other end of the L-shaped pipe (11) extends to the inside of the corrugated pipe (26) and is fixedly connected with the inner wall of the corrugated pipe (26) in a sealing way, one end of the moving pipe (17) is fixedly connected with a connecting plate (18) in a sealing way, one end of the other end of the moving pipe (17) is fixedly connected with the inner wall of the corrugated pipe (18) in a sealing way, one end of the other end (18) is fixedly connected with the top of the connecting rod (18), the top of push rod (12) runs through moving hole (19) and extends to the top of moving seat (8), and all seal fixed mounting has one-way pipe (25) on connecting plate (18), intake pipe (10) and outlet duct (6), seal fixed mounting has sealing ring (30) on the inner wall of one-way pipe (25), seal laminating has spheroid (31) on the inner wall of sealing ring (30), screw groove has been seted up to one side of spheroid (31), and sliding connection has ball screw (32) on the inner wall of screw groove, the one end of ball screw (32) extends to in one-way pipe (25) and fixed mounting have the connecting rod, and connecting rod and the inner wall fixed connection of one-way pipe (25), threaded connection has ball screw nut (33) on ball screw (32), and ball screw nut (33) and the inner wall rotation of screw groove are connected, fixed mounting has the go-between and ball screw nut (33), ball screw (32) are equipped with spacing spring (34) on the cover, spacing spring (34) are located between go-between and ball nut (33) and ball screw (16) and the fixed connection of one side of fixed connection of ball screw (16) and both ends of ball screw nut (33), one end of dead lever (16) extends to in moving tube (17), fixed mounting has the bracing piece on the inner wall of moving tube (17), and bracing piece one side symmetry fixed mounting has two connecting rods (20), and sliding connection has same installation pole (21) on two connecting rods (20), one side symmetry fixed mounting of installation pole (21) has two stay cords (24), and one end of two connecting rods (20) all extends to in spacing pipe (15) and fixed mounting has same spacing ring (28), in spacing pipe (15), spacing ring (28) cover is established on dead lever (16), symmetrical rotation is connected with two gears (29) on the inner wall of spacing ring (28), and two gears (29) are located the top and the below of dead lever (16) respectively, the top and the bottom of dead lever (16) all fixed mounting have rack (27), and two gears (29) mesh with two racks (27) respectively.
2. The low-temperature test capability verification device for the electrical and electronic products according to claim 1, wherein the movable rings (22) are sleeved on the connecting rod (20), the top end and the bottom end of the mounting rod (21) are fixedly connected with the two movable rings (22) respectively, the extension springs (23) are sleeved on the connecting rod (20), the extension springs (23) are located on one side of the movable rings (22), and two ends of the extension springs (23) are fixedly connected with the supporting rods and the movable rings (22) respectively.
3. The low-temperature test capability verification device for the electrical and electronic products according to claim 1, wherein two mounting shafts are symmetrically connected to the inner wall of the limiting ring (28) in a rotating manner, two gears (29) are fixedly sleeved on the two mounting shafts respectively, one end of the pull rope (24) extends into the limiting ring (28) and is fixedly wound on the mounting shafts, a torsion spring (35) is sleeved on the mounting shafts, the torsion spring (35) is located on one side of the gears (29), and two ends of the torsion spring (35) are fixedly connected with one side of the gears (29) and one side inner wall of the limiting ring (28) respectively.
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| CN201910454383.2A CN112014653B (en) | 2019-05-28 | 2019-05-28 | Low-temperature test capability verification equipment for electrical and electronic products |
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| CN201910454383.2A CN112014653B (en) | 2019-05-28 | 2019-05-28 | Low-temperature test capability verification equipment for electrical and electronic products |
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| CN112014653B true CN112014653B (en) | 2023-05-12 |
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