CN113686485B - Pressure sensor detection device - Google Patents

Abstract

The invention discloses a pressure sensor detection device, the structure of which comprises a connecting plate, a buckling plate, a pressure mechanism, a guide rod, and a base. At the same time, the inner sloping plates on both sides are close to the outside of the pressure sensor on the placement mechanism. At this time, the resistance plate elastically resists the two ends of the pressure sensor outside to prevent the pressure plate from tilting during the process of pressure detection of the pressure sensor. Sinking, the pressure sensor is installed vertically inside the placement cavity, and the lower slider elastically slides down on the spring rod, which drives the lower pressure ring to decline smoothly as a whole, avoiding the wear of the thread and the internal thread at the lower end of the pressure sensor. The pressure rod is buffered and pressed down inside the spring sleeve, and the suction cup is vacuum-bonded to the bottom surface of the pressure sensor to ensure that the bottom of the pressure sensor is vertically fixed to the sinking plate.

Description

A pressure sensor detection device

technical field

The invention relates to the field of sensor detection, and more specifically, to a pressure sensor detection device.

Background technique

After the pressure sensor is produced, it needs to be pressurized and tested. Place the pressure sensor vertically on the detection device, and then use a standard pressure source to drive the lower platen down to apply pressure to the sensor. According to the magnitude of the pressure and the change in the output signal , to calibrate and detect the sensor, but because the lower end of the pressure sensor is a threaded rod structure, which is installed inside the detection device by a screw, the contact area between the vertically placed pressure sensor and the lower platen is small, and the process of pressing down the lower platen In the middle, it is easy to cause the pressure sensor to sink obliquely on the detection device, which reduces the vertical pressure exerted by the lower platen on the pressure sensor, thus resulting in a decrease in the accuracy of pressure detection. The thread of the pressure sensor produces a large downward pressure friction, which causes the threaded rod at the lower end of the pressure sensor to wear.

Contents of the invention

The technical solution adopted by the present invention to achieve the technical purpose is: the pressure sensor detection device, its structure includes a connecting plate, a fastening plate, a pressure mechanism, a guide rod, and a base, a fastening plate is arranged on the outside of the connecting plate, and the pressure mechanism The upper end is fixed with the middle end of the fastening plate, the lower end of the pressure mechanism is set in the middle of the upper end surface of the base, the top of the guide rod is inserted through the inside of the connecting plate through clearance fit, the lower end of the guide rod is welded to the upper end surface of the base, and the pressure mechanism It includes a pressing mechanism and a placing mechanism. The lower end of the pressing mechanism penetrates through the middle end of the fastening plate, and the pressing mechanism is located directly above the placing mechanism. The bottom of the placing mechanism is fixed to the upper surface of the base.

As a further improvement of the present invention, the press-down mechanism includes a pressure plate, a slider, and an interference mechanism. The lower end of the pressure plate penetrates through the middle end of the fastening plate, and the slider is slidably installed inside the outer end of the pressure plate. The slider It is welded with the inner side of the interference mechanism, and the interference mechanism is located outside the lower end of the pressure plate. There are two interference mechanisms, and they are located at the left and right ends of the outer side of the pressure plate. The inner surface of each interference mechanism is provided with three sliders.

As a further improvement of the present invention, the interference mechanism includes a limit plate, a connecting shaft, an inner slant plate, and an interference piece. The inner surface of the limit plate is fixed to the slider, and the limit plate is located outside the lower end of the pressure plate. The inner side of the limiting plate is hinged to the upper end of the inner sloping plate through a connecting shaft, and the interference piece is mounted on the inner side of the inner sloping plate through a clearance fit, and the inner sloping plate is installed at the limiting angle at an inclination angle with the outer end higher than the inner end. On the inner side of the board, a spring is also provided at the joint between the conflicting piece and the inside of the inner sloping board.

As a further improvement of the present invention, the placement mechanism includes a bottom plate, a placement cavity, a locking mechanism, and a buffer mechanism. Installed inside the placement cavity, the buffer mechanism is arranged on the end surface of the bottom plate, and the buffer mechanism is located inside the placement cavity, the buffer mechanism is located directly below the locking mechanism, and the bottom plate and the placement cavity are installed at a vertical angle.

As a further improvement of the present invention, the locking mechanism includes a lower pressure ring, an internal thread, a lower slider, and a spring rod. The lower pressure ring is located inside the placement cavity, and the inner surface of the lower pressure ring is provided with an internal thread. The outer end of the lower pressure ring is welded with a lower block, and the upper end of the spring rod runs through the interior of the lower block with a clearance fit. The spring rod is fixedly installed inside the placement cavity. The screw thread matches the external screw thread at the lower end of the pressure sensor, and two of the lower slider and the spring rod are respectively arranged on the left and right sides of the lower pressure ring.

As a further improvement of the present invention, the buffer mechanism includes a sinking plate, a pressing rod, a spring sleeve, a telescopic hose, and a suction cup. The bottom surface of the sinking plate is provided with a pressing rod, and the lower end of the pressing rod is installed inside the spring sleeve. , the middle end of the bottom of the sinking plate is provided with a telescopic hose, the suction cup is arranged on the top surface of the sinking plate, and the suction cup is connected with the telescopic hose, the pressure rod and the spring sleeve are provided with four, and respectively Located at four positions on the bottom of the sinking plate, the telescopic hose has a folded structure and is made of rubber with a certain degree of resilience.

The beneficial effects of the present invention are:

1. Through the rotating connection of the connecting shaft, the inclination angle of the inner sloping plate is changed, and the inner sloping plates on both sides are simultaneously approached to the outside of the pressure sensor on the placement mechanism. The elastic contact ensures that the contact sheet is in close contact with the outer two ends of the pressure sensor, prevents the pressure plate from tilting and sinking during the pressure detection process of the pressure sensor, and ensures that the pressure plate performs vertical pressure detection on the pressure sensor.

2. The pressure sensor is installed vertically inside the cavity. The lower slider slides down elastically on the spring rod, which drives the lower pressure ring down smoothly, avoiding the wear of the thread and the internal thread at the lower end of the pressure sensor. The rod is buffered and pressed down inside the spring tube sleeve, and the suction cup is vacuum-bonded with the bottom surface of the pressure sensor to ensure that the bottom of the pressure sensor is vertically fixed to the sinking plate to avoid inclined sinking of the pressure sensor after being pressured.

Description of drawings

Fig. 1 is a structural schematic diagram of a pressure sensor detection device of the present invention.

Fig. 2 is a structural schematic diagram of a pressure mechanism of the present invention.

Fig. 3 is a top view internal structure schematic diagram of a pressing mechanism of the present invention.

Fig. 4 is a top structural schematic diagram of an interference mechanism of the present invention.

Fig. 5 is a schematic diagram of the internal structure of a placing mechanism of the present invention.

Fig. 6 is a schematic perspective view of a locking mechanism of the present invention.

Fig. 7 is a structural schematic diagram of a buffer mechanism of the present invention.

In the figure: connecting plate-1, fastening plate-2, pressure mechanism-3, guide rod-4, base-5, pressing mechanism-31, placement mechanism-32, pressure plate-311, slider-312, interference mechanism -313, limit plate-13a, connecting shaft-13b, inner inclined plate-13c, interference plate-13d, bottom plate-321, placement cavity-322, locking mechanism-323, buffer mechanism-324, lower pressure ring-23a , Internal thread-23b, lower slider-23c, spring rod-23d, sinking plate-24a, pressure rod-24b, spring sleeve-24c, telescopic hose-24d, suction cup-24e.

Detailed ways

The present invention will be further described below in conjunction with accompanying drawing:

Example 1:

As shown in accompanying drawing 1 to accompanying drawing 4:

The present invention is a kind of pressure sensor detecting device, and its structure comprises connecting plate 1, fastening plate 2, pressure mechanism 3, guide bar 4, base 5, described connecting plate 1 outer side is provided with fastening plate 2, and the upper end of pressure mechanism 3 and buckle The middle end of the plywood 2 is fixed, the lower end of the pressure mechanism 3 is set at the middle part of the upper end surface of the base 5, the top of the guide rod 4 runs through the inside of the connecting plate 1 through clearance fit, and the lower end of the guide rod 4 is welded to the upper end surface of the base 5, The pressing mechanism 3 includes a pressing mechanism 31 and a placing mechanism 32. The lower end of the pressing mechanism 31 penetrates through the middle end of the fastening plate 2, and the pressing mechanism 31 is located directly above the placing mechanism 32. The bottom of the placing mechanism 32 is in contact with the base. 5. The upper end face is fixed.

Wherein, the pressing mechanism 31 includes a pressure plate 311, a slider 312, and an interference mechanism 313. The lower end of the pressure plate 311 penetrates through the middle end of the fastening plate 2, and the slider 312 is slidably installed inside the outer end of the pressure plate 311. The slider 312 is welded to the inner side of the collision mechanism 313, and the collision mechanism 313 is located outside the lower end of the pressure plate 311. There are two collision mechanisms 313, and they are located at the left and right ends of the pressure plate 311. Each collision mechanism 313 Three sliders 312 are arranged on the inner surface, which is beneficial for the conflicting mechanism 313 to slide up and down outside the pressure plate 311 , so that when the pressure plate 311 is pressed down, the conflicting mechanism 313 slides up and down outside the placing mechanism 32 for adjustment.

Wherein, the interference mechanism 313 includes a limiting plate 13a, a connecting shaft 13b, an inner slant plate 13c, and a conflicting piece 13d. On the outer side of the lower end, the inner side of the limiting plate 13a is hinged to the upper end of the inner slanting plate 13c through the connecting shaft 13b. The low inclination angle of the inner side is installed on the inner side of the limit plate 13a, which is beneficial to obliquely resisting the pressure sensor on the placement mechanism 32. A spring is also provided at the connection between the conflicting piece 13d and the inside of the inner sloping plate 13c, which is beneficial to the conflicting piece 13d. The inner slant plate 13c is elastically pressed, so as to ensure the tight contact of the contact piece 13d against the outside of the pressure sensor.

The specific usage and function of this embodiment:

In the present invention, the lower end of the pressure sensor is installed inside the placing mechanism 32, and then the pressure plate 311 is driven down by an outside pressure source to press down. During the pressing down process, the lower end of the limit plate 13a is in conflict with the outside of the placing mechanism 32, so that The slider 312 slides inside the outer end of the pressure plate 311, so that the height of the limit plate 13a is adjusted. At this time, the inclination angle of the inner inclined plate 13c is changed through the rotation connection of the connecting shaft 13b. The slant plate 13c approaches the outside of the pressure sensor on the placement mechanism 32 at the same time. At this time, the collision piece 13d elastically touches the two ends of the pressure sensor outside to ensure that the collision piece 13d closely touches the outside ends of the pressure sensor, and at the same time, the outside of the pressure sensor The same resistance force is applied at both ends to prevent the pressure plate 311 from tilting and sinking during the pressure detection process of the pressure sensor, ensuring that the pressure plate 311 performs vertical pressure detection on the pressure sensor.

Example 2:

As shown in accompanying drawing 5 to accompanying drawing 7:

Wherein, the placement mechanism 32 includes a bottom plate 321, a placement cavity 322, a locking mechanism 323, and a buffer mechanism 324. The bottom surface of the bottom plate 321 is fixed to the middle part of the upper end surface of the base 5, and the upper end of the bottom plate 321 is provided with a placement cavity 322. The locking mechanism 323 is slidably installed inside the placement cavity 322, the buffer mechanism 324 is arranged on the upper end surface of the bottom plate 321, and the buffer mechanism 324 is located inside the placement cavity 322, the buffer mechanism 324 is located directly below the locking mechanism 323, and the bottom plate 321 and the placement cavity 322 are installed at a vertical angle to ensure that the pressure sensor is vertically installed inside the placement cavity 322 .

Wherein, the locking mechanism 323 includes a lower pressure ring 23a, an internal thread 23b, a lower slider 23c, and a spring rod 23d. 23b, the outer end of the lower pressure ring 23a is welded with a lower slider 23c, and the upper end of the spring rod 23d runs through the inside of the lower slider 23c through clearance fit, and the spring rod 23d is fixedly installed inside the placement cavity 322, and the lower pressure The ring 23a is located directly above the buffer mechanism 324, and the internal thread 23b matches the external thread at the lower end of the pressure sensor, which facilitates the lower end of the pressure sensor to be threadably installed inside the lower pressure ring 23a. The lower slider 23c and the spring rod 23d are provided with two One, respectively arranged on the left and right sides of the lower pressure ring 23a, to ensure that the lower pressure ring 23a can drive the pressure sensor to drop vertically and steadily inside the placement cavity 322, so that the pressure sensor can smoothly sink and buffer vertically.

Wherein, the buffer mechanism 324 includes a sinking plate 24a, a pressing rod 24b, a spring sleeve 24c, a flexible hose 24d, and a suction cup 24e. Inside the spring sleeve 24c, the bottom middle end of the sinking plate 24a is provided with a telescopic hose 24d, the suction cup 24e is arranged on the upper surface of the sinking plate 24a, and the suction cup 24e is connected with the telescopic hose 24d, and the pressure rod 24b There are four spring sleeves and spring sleeves 24c, and they are respectively arranged on four positions at the bottom of the sinking plate 24a, which is beneficial to the sinking and buffering of the sinking plate 24a. The telescopic hose 24d has a folded structure and adopts rubber The material has a certain degree of resilience, which is beneficial to change the internal air pressure while stretching, so that the suction cup 24e is vacuum-bonded with the bottom of the pressure sensor, ensuring that the bottom of the pressure sensor is vertically fixed with the sinking plate 24a, and avoiding pressure. Produces oblique sinking.

The specific usage and function of this embodiment:

In the present invention, the lower end of the pressure sensor is screwed into the lower pressure ring 23a, and the external thread at the lower end of the pressure sensor is thread-matched with the internal thread 23b, so that the pressure sensor is vertically installed inside the placement cavity 322. During the process, the pressure sensor receives the downward force, and at this time, the lower slider 23c elastically slides down on the spring rod 23d, which drives the lower pressure ring 23a to decline steadily as a whole, so as to avoid the thread at the lower end of the pressure sensor and the internal thread 23b from being worn out. At the same time, the bottom of the pressure sensor presses down on the sinking plate 24a, and the pressure rod 24b buffers and presses down inside the spring sleeve 24c. At the same time, the flexible hose 24d elastically shrinks, so that the suction cup 24e is vacuum-bonded with the bottom surface of the pressure sensor. Make sure that the bottom of the pressure sensor is vertically fixed to the sinking plate 24a, so as to prevent the pressure sensor from sinking obliquely when it is under pressure.

Utilize the technical solution described in the present invention, or those skilled in the art design a similar technical solution under the inspiration of the technical solution of the present invention, and achieve the above-mentioned technical effects, all fall into the protection scope of the present invention.

Claims (1)

1. A pressure sensor detection device, its structure includes a connecting plate (1), a fastening plate (2), a pressure mechanism (3), a guide rod (4), a base (5), and the outer side of the connecting plate (1) is provided with There is a fastening plate (2), and the upper end of the pressure mechanism (3) is fixed to the middle end of the fastening plate (2), the lower end of the pressure mechanism (3) is set in the middle of the upper end surface of the base (5), and the guide rod (4) The top adopts clearance fit to run through the inside of the connecting plate (1), and the lower end of the guide rod (4) is welded to the upper end surface of the base (5), which is characterized in that: The pressing mechanism (3) includes a pressing mechanism (31) and a placing mechanism (32). (32) directly above, the bottom of the placement mechanism (32) is fixed to the upper surface of the base (5); The pressing mechanism (31) includes a pressure plate (311), a slider (312), and an interference mechanism (313). The lower end of the pressure plate (311) passes through the middle end of the fastening plate (2), and the slider (312 ) is slidably installed inside the outer end of the pressure plate (311), the slider (312) is welded to the inner end of the interference mechanism (313), and the interference mechanism (313) is located outside the lower end of the pressure plate (311); The conflicting mechanism (313) includes a limiting plate (13a), a connecting shaft (13b), an inner sloping plate (13c), and a conflicting piece (13d). The inner surface of the limiting plate (13a) and the slider (312) The limiting plate (13a) is located outside the lower end of the pressure plate (311), the inner side of the limiting plate (13a) is hinged with the upper end of the inner inclined plate (13c) through the connecting shaft (13b), and the resisting plate ( 13d) Installed at the inner end of the inner sloping plate (13c) with clearance fit; The placement mechanism (32) includes a bottom plate (321), a placement cavity (322), a locking mechanism (323), and a buffer mechanism (324). The bottom surface of the bottom plate (321) is fixed to the middle of the upper end surface of the base (5), And the upper end of the bottom plate (321) is provided with a placement cavity (322), the locking mechanism (323) is slidably installed inside the placement cavity (322), the buffer mechanism (324) is arranged on the upper end surface of the bottom plate (321), and buffers The mechanism (324) is located inside the placement cavity (322), and the buffer mechanism (324) is located directly below the locking mechanism (323); The locking mechanism (323) includes a lower pressure ring (23a), an internal thread (23b), a lower slider (23c), and a spring rod (23d), and the lower pressure ring (23a) is located inside the placement cavity (322) , and the inner surface of the lower pressure ring (23a) is provided with an internal thread (23b), the outer end of the lower pressure ring (23a) is welded with a lower slider (23c), and the upper end of the spring rod (23d) runs through the lower Inside the slider (23c), the spring rod (23d) is fixedly installed inside the placement cavity (322), and the lower pressure ring (23a) is located directly above the buffer mechanism (324); The buffer mechanism (324) includes a sinking plate (24a), a pressing rod (24b), a spring sleeve (24c), a telescopic hose (24d), and a suction cup (24e). The bottom surface of the sinking plate (24a) is provided with There is a pressure rod (24b), and the lower end of the pressure rod (24b) is installed inside the spring tube sleeve (24c), the middle end of the bottom of the sinking plate (24a) is provided with a telescopic hose (24d), and the suction cup (24e) Set on the upper end surface of the sinking plate (24a), and the suction cup (24e) communicates with the telescopic hose (24d); Install the lower end of the pressure sensor inside the placement mechanism (32), and then drive the pressure plate (311) to press down through the pressure source on the outside. Conflict, so that the slider (312) slides inside the outer end of the pressure plate (311), so that the height of the limit plate (13a) is adjusted, and at this time, it is connected through the rotation of the connecting shaft (13b), so that the inner inclined plate The inclination angle of (13c) changes, and the inner slant plates (13c) on both sides simultaneously approach the outside of the pressure sensor on the placement mechanism (32), and at this time the resistance piece (13d) elastically resists the two ends of the pressure sensor on the outside , to ensure that the resisting sheet (13d) closely resists the outer two ends of the pressure sensor, and at the same time exerts an equal resisting force on the outer two ends of the pressure sensor, so as to prevent the pressure plate (311) from tilting during the pressure detection process of pressing down on the pressure sensor Sink to ensure that the pressure plate (311) performs a vertical downward pressure test on the pressure sensor; screw the lower end of the pressure sensor into the lower pressure ring (23a), and match the external thread on the lower end of the pressure sensor with the internal thread (23b) , so that the pressure sensor is installed vertically inside the placement chamber (322), and the pressure sensor receives a downward force during the pressure detection process, and then slides elastically on the spring rod (23d) through the lower slider (23c) , which drives the lower pressure ring (23a) to go down smoothly as a whole, avoiding the wear of the thread at the lower end of the pressure sensor and the internal thread (23b), and at the same time, the bottom of the pressure sensor presses down on the sinking plate (24a), through the pressure rod ( 24b) Buffer and press down inside the spring sleeve (24c), and at the same time, the flexible hose (24d) elastically shrinks, so that the suction cup (24e) is vacuum-bonded with the bottom surface of the pressure sensor, ensuring that the bottom of the pressure sensor and the sinking plate (24a ) to be fixed vertically to prevent the pressure sensor from tilting and sinking when it is under pressure.

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