CN111964810A - Waterproof digital pressure gauge - Google Patents

Abstract

The invention relates to a waterproof digital pressure gauge, which comprises a casing, a pressure gauge body is arranged inside the casing, the casing comprises an upper casing and a lower casing, and a first connecting ring is fixedly connected on one end face of the lower casing close to the upper casing, and the upper casing is A second connecting ring is fixedly connected on one end face of the shell close to the lower shell, the first connecting ring and the second connecting ring are arranged in a rectangular shape, and a first ring groove is opened on the outer wall of one end of the first connecting ring close to the second connecting ring, A second ring groove is formed on the inner wall of one end of the second connecting ring close to the first connecting ring, the inner wall of the first ring groove is pressed against the inner wall of the second ring groove, and a seal is provided between the inner wall of the first ring groove and the inner wall of the second ring groove mechanism, the upper shell and the lower shell are combined, the inner wall of the first ring groove and the inner wall of the second ring groove are in contact, and under the action of the sealing mechanism, the gap between the first connecting ring and the second connecting ring is increased. It improves the sealing performance of the connection between the upper shell and the lower shell, and improves the waterproof effect of the device.

Description

A waterproof digital pressure gauge

technical field

The invention relates to a detection device, in particular to a waterproof digital pressure gauge.

Background technique

The digital pressure gauge combines the world's leading microprocessor technology and advanced analog-to-digital conversion algorithm to meet the requirements of high precision and low power consumption. Large-screen LCD technology and unique background light technology make the data clear and easy to read at night. Imported chips are used to collect, memorize and measure instrument data to maintain the highest value, and manually return to zero. The shell is fully sealed with stainless steel, which is resistant to corrosion and vibration, and can be used in a variety of complex environments.

A digital pressure gauge is a precise measuring instrument. It needs to be careful during use. Once the instrument is damp or water enters, it will affect the measurement accuracy of the instrument. Now a waterproof digital pressure gauge is needed to solve this problem.

SUMMARY OF THE INVENTION

In view of the deficiencies in the prior art, the purpose of the present invention is to provide a waterproof digital pressure gauge, which has the effect of improving the sealing performance of the connection between the upper shell and the lower shell, and improving the waterproof effect of the device.

The above-mentioned purpose of the present invention is achieved through the following technical solutions:

A waterproof digital pressure gauge includes a casing, a pressure gauge body is arranged inside the casing, the casing includes an upper casing and a lower casing, the upper casing and the lower casing are connected by bolts, and the lower casing is A first connecting ring is fixedly connected on one end face close to the upper shell, and a second connecting ring is fixedly connected on one end face of the upper shell close to the lower shell, and the first connecting ring and the second connecting ring are arranged in a rectangular shape, A first ring groove is formed on the outer wall of one end of the first connection ring close to the second connection ring, and a second ring groove is formed on the inner wall of one end of the second connection ring close to the first connection ring. The inner wall of the ring groove is pressed against the inner wall of the second ring groove, and a sealing mechanism is arranged between the inner wall of the first ring groove and the inner wall of the second ring groove.

By adopting the above technical solution, the upper shell and the lower shell are combined, and the inner wall of the first ring groove and the inner wall of the second ring groove are in contact. Under the action of the sealing mechanism, the first connecting ring and the second ring are added. The sealing performance between the connection rings is simple in structure and convenient in operation through this arrangement, the sealing performance of the connection between the upper shell and the lower shell is improved, and the waterproof effect of the device is improved.

The present invention is further provided as follows: the sealing mechanism includes a sealing groove formed on the inner wall around the first ring groove, a first sealing plate rotatably connected to the inner walls of both ends of the sealing groove, and a first sealing plate fixedly connected to the end faces of both ends of the first sealing plate The rotating rod on one end of the first sealing plate is fixedly connected to the end face of one end of the first sealing plate close to the rotating rod. It is arranged at an obtuse angle with the second sealing plate.

By adopting the above technical solution, when the upper casing cover is set on the lower casing, the inner wall of the second ring groove slides along the inner wall of the first ring groove, one end face of the second connecting ring drives the first sealing plate to move, and the first sealing plate drives the second sealing plate When the plate moves, deformation occurs between the first sealing plate and the second sealing plate, and one end of the second sealing plate is pressed against the inner wall of the second ring groove. Through this arrangement, the structure is simple, the operation is convenient, and the first ring groove is improved. The tightness between the inner wall and the inner wall of the second annular groove.

The present invention is further provided as follows: a first connecting column is fixedly connected to the inner wall of the lower shell, a second connecting column is fixedly connected to the inner wall of the upper shell, and a first connecting column is opened on one end face of the first connecting column. A hole, one end of the first hole communicates with the outer wall of the lower shell, a second hole is opened on one end face of the second connecting column, and the bolt includes a stud and a polygonal abutment fixedly connected to one end of the stud. the tightening plate, the stud is screwed in the second hole, the stud is connected in rotation with the inner wall of the first hole, and a third sealing plate is fixedly connected to the inner wall of one end of the second connecting ring close to the first connecting ring, The third sealing plate is arranged obliquely, and a driving member for driving the deformation of the third sealing plate is arranged on the first connecting column, and the third sealing plate is pressed against the first connection ring and close to the second connection after the deformation on the inner wall of one end of the ring.

By adopting the above technical solution, the second connecting post on the upper shell is aligned with the first connecting post on the lower shell, the stud is put into the first hole, and the third seal is driven by the action of the stud and the driving member The plate is deformed. After the third sealing plate is deformed, one end of the third sealing plate is pressed against the inner wall of the second connecting ring. Through this arrangement, the structure is simple, the operation is convenient, and the connection between the first connecting ring and the second connecting ring is improved. The tightness between the inner walls of the ring.

The present invention is further configured as follows: the driving member includes two sets of connecting rods whose one end is fixedly connected to the end face of the second connecting column close to the first connecting column, a driving ring that is slidably connected to the connecting rod, and a driving ring that is fixedly connected to the driving ring. A drive rod with a rectangular cross section on the outer wall, a guide surface opened on the upper surface of one end of the drive rod close to the third sealing plate, and a guide surface arranged between the abutting plate and the outer wall of the lower shell for limiting the direction of the stud to the second connecting column For the moving limiter, the stud is connected with the inner wall of the drive ring in a threaded connection, the guide surface is arranged upward, and the drive rod is pressed against the third sealing plate through the guide surface.

By adopting the above technical solution, the drive ring is slidably connected to the connecting rod, the stud is rotated, and the stud is threadedly connected to the inner wall of the drive ring. The drive ring slides on the connecting rod, the drive ring drives the drive ring to move, and the drive ring drives the third seal plate to move through the guide surface. Through this arrangement, the structure is simple, the operation is convenient, and it is convenient for the operator to drive the third seal plate to deform.

The present invention is further provided as follows: the limiting member includes a mounting slot opened on one side wall of the abutting plate close to the stud, a limiting rod rotatably connected between the inner walls on both sides of one end of the mounting slot, and a mounting slot provided on the side wall of the mounting slot. Between the inner wall of the groove and the limit rod, the abutting member used to press one end of the limit rod against the outer wall of the lower shell all the time, and the limit assembly arranged on the outer wall of the abutting plate to limit the rotation of the limit rod, the installation One end of the groove is communicated with the side wall of one side of the abutting plate.

By adopting the above technical solution, one end of the limit rod is rotatably connected to the installation groove, and the other end is pressed against the abutting plate. Under the action of the limit component, the limit rod cannot be rotated. With this arrangement, the structure is simple, the operation is convenient, and it is convenient for the operator to move the limit stud toward the second hole.

The present invention is further provided as follows: the limit assembly includes a mounting hole on the side wall of the abutting plate away from the stud, a limit sleeve slidably connected to the side wall of the abutment plate, and a limit sleeve fixedly connected to the limit sleeve A long rod on the inner wall, the long rod is slidably connected in the installation hole, and the inner wall of the limiting sleeve is slidably connected on the side wall of the abutting plate.

By adopting the above technical solution, the limit sleeve is slidably connected to the surrounding side walls of the abutting plate, one end of the long rod is slidably connected to the installation hole, and one side of the limit rod is pressed against the inner wall of the limit sleeve. , the structure is simple, the operation is convenient, and the rotation of the limit limit rod is convenient.

The present invention is further provided as follows: the pressing member comprises a pressing rod rotatably connected to the inner walls of the two sides of the installation groove and a pressing torsion spring sleeved on the outer wall of the pressing rod, the two ends of the pressing torsion spring are They are respectively fixedly connected to the inner wall of the installation groove and the abutting rod, and one end of the limiting rod is fixedly connected to the outer wall of the abutting rod.

By adopting the above technical solution, one end of the limit rod is fixedly connected to the pressing rod, and the two ends of the pressing torsion spring are fixedly connected to the pressing rod and the inner wall of the installation groove, respectively. With this arrangement, the structure is simple and the operation is convenient. It is convenient for the operator to limit one end of the limit rod against the outer wall of the lower shell all the time.

The present invention is further provided as follows: a pressing ball is connected to the end face of the end of the limiting rod away from the pressing rod.

By adopting the above technical solution, a pressing ball is connected to the end of the limit rod away from the abutment rod. With this arrangement, the structure is simple, the operation is convenient, and the distance between one end of the limit rod and the outer wall of the lower shell is reduced. friction.

To sum up, the present invention includes at least one of the following beneficial technical effects: improving the sealing performance of the connection between the upper shell and the lower shell, and improving the waterproof effect of the device; reducing the gap between one end of the limit rod and the outer wall of the lower shell friction; it is convenient for the operator to always press one end of the limiting rod against the outer wall of the lower shell; it is convenient for the operator to limit the movement of the stud to the second hole.

Description of drawings

Fig. 1 is the overall structure schematic diagram of the embodiment;

Fig. 2 is the enlarged view of A place in Fig. 1;

3 is a cross-sectional view of the overall structure of the embodiment;

Fig. 4 is an enlarged view at B in Fig. 3;

FIG. 5 is a schematic diagram of the overall structure of the limiting member in the embodiment.

In the figure, 1, the shell; 2, the pressure gauge body; 3, the upper shell; 4, the lower shell; 5, the first connecting ring; 6, the second connecting ring; 7, the first ring groove; 8, the second ring groove; 9. sealing mechanism; 10. sealing groove; 11. first sealing plate; 12. rotating rod; 13. second sealing plate; 14. first connecting column; 15. second connecting column; 16. first hole ; 17, the second hole; 18, the stud; 19, the abutting plate; 20, the third sealing plate; 21, the driving part; 22, the connecting rod; 23, the driving ring; 24, the driving rod; 25, the guide surface; 26, limit piece; 27, installation slot; 28, limit rod; 29, abutment piece; 30, limit assembly; 31, installation hole; 32, limit sleeve; 33, long rod; 34, abutment rod 35. Tighten the torsion spring; 36. Tighten the ball.

Detailed ways

The present invention will be further described in detail below with reference to the accompanying drawings.

As shown in FIG. 1 , it is a waterproof digital pressure gauge disclosed in the present invention, comprising a housing 1 , and a pressure gauge body 2 is arranged inside the housing 1 .

As shown in FIG. 1 , the casing 1 includes an upper casing 3 and a lower casing 4 , the upper casing 3 and the lower casing 4 are connected by bolts, and a first connecting ring 5 is fixedly connected on one end face of the lower casing 4 close to the upper casing 3 , a second connecting ring 6 is fixedly connected on one end face of the upper shell 3 close to the lower shell 4, the first connecting ring 5 and the second connecting ring 6 are arranged in a rectangular shape, and the first connecting ring 5 is close to the second connecting ring 6 A first ring groove 7 is opened on the outer wall of the second connecting ring 6, and a second ring groove 8 is opened on the inner wall of one end of the second connecting ring 6 close to the first connecting ring 5 (as shown in Figure 4). The inner wall of the first ring groove 7 abuts on the on the inner wall of the second ring groove 8 .

As shown in FIG. 2, in order to further improve the sealing between the inner wall of the first annular groove 7 and the inner wall of the second annular groove 8, a sealing mechanism 9 is provided between the inner wall of the first annular groove 7 and the inner wall of the second annular groove 8, The sealing mechanism 9 includes a sealing groove 10, a first sealing plate 11, a second sealing plate 13, and a rotating rod 12. The sealing groove 10 is opened on the surrounding inner wall of the first ring groove 7, and both ends of the sealing groove 10 are sealed with adjacent seals. The groove 10 is connected, one end of the rotating rod 12 is fixedly connected to one end of the end face of the first sealing plate 11, a rotating rod 12 is fixedly connected to both ends of the first sealing plate 11, and the other end of the rotating rod 12 is rotatably connected to the sealing plate 11. On one end face of the groove 10, the second sealing plate 13 is fixedly connected to one end face of the first sealing plate 11 close to the rotating rod 12, and the included angle between the first sealing plate 11 and the second sealing plate 13 is 170 degrees.

As shown in FIGS. 3 and 4 , a first connecting column 14 is fixedly connected to the inner wall of the lower shell 4 , and a first hole 16 is opened on one end of the first connecting column 14 , and the first hole 16 penetrates the first connecting column 14 and One end of a hole 16 is communicated with the outer wall of the lower shell 4, a second connecting column 15 is fixedly connected to the inner wall of the upper shell 3, and a second hole 17 is opened on one end of the second connecting column 15. The bolt includes a stud 18 and a The abutting plate 19 is fixedly connected to one end face of the stud 18 .

As shown in FIGS. 3 and 4 , in order to improve the sealing performance of the inner wall of the first connecting ring 5 and the inner wall of the second connecting ring 6 , a third sealing plate 20 is fixedly connected to the inner wall of the second connecting ring 6 , and the third sealing plate 20 is The first connecting column 14 is provided with a driving member 21 for driving the third sealing plate 20 to deform, and the third sealing plate 20 is pressed against the inner wall of the first connecting ring 5 after being deformed.

As shown in FIGS. 3 and 4 , the driving member 21 includes a connecting rod 22 , a driving ring 23 , a driving rod 24 , a guide surface 25 , and a limiting member 26 . One end of the connecting rod 22 is fixedly connected to one end face of the second connecting column 15 . Two groups of connecting rods 22 are fixedly connected on one end face of the second connecting column 15, the axis of the connecting rod 22 is parallel to the axis of the second connecting column 15, the driving ring 23 is slidably connected to the connecting rod 22, and the driving ring 23 The diameter of the inner wall is the same as that of the second hole 17, the stud 18 is threadedly connected to the inner wall of the drive ring 23, the drive rod 24 is fixedly connected to the outer wall of the drive ring 23, the cross section of the drive rod 24 is rectangular, and the drive rod 24 is connected to the second The axis of the connecting column 15 is arranged vertically, the guide surface 25 is opened on the upper surface of the end of the drive rod 24 away from the drive ring 23, the guide surface 25 is opened upward, and the drive rod 24 is pressed against the third sealing plate 20 through the guide surface 25. , the limiter 26 is arranged between the abutting plate 19 and the outer wall of the lower shell 4, the limiter 26 is used to limit the movement of the stud 18 to the second connecting column 15, and the limiter 26 is used to facilitate the operator to drive the drive ring 23 Upward movement.

As shown in FIGS. 4 and 5 , the limiting member 26 includes a mounting groove 27 , a limiting rod 28 , a pressing member 29 and a limiting assembly 30 . The mounting groove 27 is opened on the side of the abutting plate 19 close to the stud 18 On the wall, one end of the inner wall of the installation groove 27 is communicated with the side wall of the abutting plate 19, one end of the limit rod 28 is rotatably connected to the inner walls of one end of the installation groove 27 on both sides, and the abutting member 29 is arranged on the limit rod 28 and the installation Between the inner walls of the groove 27, the abutting member 29 is used to facilitate that one end of the limit rod 28 is always pressed against the outer wall of the lower shell 4, and the limit component 30 is arranged between the side wall of the abutting plate 19 and the limit rod 28, and the limit The assembly 30 is used to limit the rotation of the limit rod 28 .

As shown in FIG. 5 , the limit assembly 30 includes an installation hole 31 , a limit sleeve 32 and a long rod 33 . The installation hole 31 is opened on the side wall of the limit plate away from the stud 18 , and the axis of the installation hole 31 is in line with the screw The axes of the column 18 are parallel, the limit sleeve 32 is slidably connected to the side wall of the abutting plate 19 , the inner wall of the limit sleeve 32 is slidably connected to the side wall of the abutting plate 19 , and one end of the long rod 33 is fixedly connected to the inner wall of the limit sleeve 32 One end of the long rod 33 is slidably connected in the installation hole 31 , and the side wall of the limit rod 28 abuts on the inner wall of the limit sleeve 32 .

As shown in FIG. 5 , the pressing member 29 includes a pressing rod 34 and a pressing torsion spring 35. Both ends of the pressing rod 34 are rotatably connected to the inner walls on both sides of the installation groove 27, and the pressing torsion spring 35 is sleeved on the abutting torsion spring 35. On the outer wall of the tightening rod 34 , both ends of the abutting torsion spring 35 are fixedly connected to the tightening rod 34 and the inner wall of the mounting groove 27 respectively, and one end of the limiting rod 28 is fixedly connected to the outer wall of the abutting rod 34 .

As shown in FIG. 5 , in order to reduce the friction between one end of the limit rod 28 and the outer wall of the lower shell 4 , an abutment ball 36 is ball-connected to the end face of the limit rod 28 away from the abutment rod 34 .

The implementation principle of this embodiment is as follows: the upper shell 3 and the lower shell 4 are combined together, one end of the second connecting ring 6 drives the first sealing plate 11 to move, the first sealing plate 11 drives the second sealing plate 13 to rotate, and the second sealing plate 11 rotates. One end of the sealing plate 13 is pressed against the inner wall of the second ring groove 8;

Extend the stud 18 into the first hole 16, one end of the limit rod 28 is pressed against the outer wall of the lower shell 4, rotate the stud 18, under the action of the stud 18 and the thread on the inner wall of the drive ring 23, The driving ring 23 is driven to slide on the connecting rod 22 , the driving ring 23 drives the driving rod 24 to move, the driving rod 24 drives the third sealing plate 20 to move through the guide surface 25 , and one end of the third sealing plate 20 is pressed against the inner wall of the first connecting ring 5 superior;

When the limiting sleeve 32 is slid, the limiting rod 28 rotates, and the stud 18 continues to be rotated, and the stud 18 is threadedly connected to the inner wall of the second hole 17 .

The embodiments of this specific embodiment are all preferred embodiments of the present invention, and are not intended to limit the protection scope of the present invention. Therefore: all equivalent changes made according to the structure, shape and principle of the present invention should be covered in within the protection scope of the present invention.

Claims (8)

1. A waterproof digital pressure gauge, comprising a casing (1), and a pressure gauge body (2) is arranged inside the casing (1), characterized in that: the casing (1) comprises an upper casing (3) and The lower shell (4), the upper shell (3) and the lower shell (4) are connected by bolts, and a first connecting ring is fixedly connected on one end face of the lower shell (4) close to the upper shell (3) (5), a second connecting ring (6) is fixedly connected on one end face of the upper casing (3) close to the lower casing (4), the first connecting ring (5) and the second connecting ring (6) It is arranged in a rectangular shape, and a first ring groove (7) is opened on the outer wall of one end of the first connecting ring (5) close to the second connecting ring (6), and the second connecting ring (6) is close to the first connecting ring (6). A second ring groove (8) is formed on the inner wall of one end of the ring (5), the inner wall of the first ring groove (7) is pressed against the inner wall of the second ring groove (8), and the inner wall of the first ring groove (7) is pressed against the inner wall of the second ring groove (8). A sealing mechanism (9) is arranged between the inner wall of ) and the inner wall of the second ring groove (8). 2. A waterproof digital pressure gauge according to claim 1, characterized in that: the sealing mechanism (9) comprises a sealing groove (10) provided on the inner wall around the first ring groove (7), and is rotatably connected to A first sealing plate (11) on the inner walls of both ends of the sealing groove (10), a rotating rod (12) fixedly connected to one end of the end faces at both ends of the first sealing plate (11), and a first sealing plate (11) fixedly connected ) a second sealing plate (13) on one end face of the rotating rod (12), the first sealing plate (11) is rotatably connected to the inner walls of both ends of the sealing groove (10) through the rotating rod (12), the first sealing plate (11) An obtuse angle is formed between the sealing plate (11) and the second sealing plate (13). 3. A waterproof digital pressure gauge according to claim 1, characterized in that: a first connecting column (14) is fixedly connected to the inner wall of the lower shell (4), and a first connecting column (14) is fixedly connected to the inner wall of the upper shell (3). A second connecting column (15) is fixedly connected to the upper part, a first hole (16) is opened on one end face of the first connecting column (14), and one end of the first hole (16) is connected to the outer wall of the lower shell (4). A second hole (17) is opened on one end face of the second connecting column (15), and the bolt includes a stud (18) and a polygonal abutment that is fixedly connected to one end of the stud (18). The plate (19), the stud (18) is screwed in the second hole (17), and the stud (18) is rotatably connected with the inner wall of the first hole (16), in the second connecting ring (6) A third sealing plate (20) is fixedly connected to the inner wall of one end of the first connecting ring (5), the third sealing plate (20) is inclined, and the first connecting column (14) is provided with a A driving member (21) for driving the deformation of the third sealing plate (20), the third sealing plate (20) is pressed against the inner wall of one end of the first connecting ring (5) close to the second connecting ring (6) after being deformed. 4. A waterproof digital pressure gauge according to claim 3, characterized in that: the driving member (21) comprises two sets of one end fixedly connected to the second connecting column (15) close to the first connecting column (14) A connecting rod (22) on one end face, a driving ring (23) slidably connected to the connecting rod (22), a driving rod (24) which is fixedly connected to the outer wall of the driving ring (23) and has a rectangular cross-section, A guide surface (25) on the upper surface of one end of the rod (24) close to the third sealing plate (20) is provided between the abutting plate (19) and the outer wall of the lower shell (4) for limiting the stud (18) The limiting member (26) moves toward the second connecting column (15), the stud (18) is threadedly connected with the inner wall of the driving ring (23), the guide surface (25) is set upward, and the driving The rod (24) is pressed against the third sealing plate (20) through the guide surface (25). 5. A waterproof digital pressure gauge according to claim 4, characterized in that: the limiting member (26) comprises a sidewall provided on one side of the abutting plate (19) close to the stud (18) An installation groove (27), a limit rod (28) rotatably connected between the inner walls on both sides of one end of the installation groove (27), and arranged between the inner wall of the installation groove (27) and the limit rod (28) are used to limit the position One end of the rod (28) is always pressed against the abutting member (29) on the outer wall of the lower shell (4), and a limiting assembly (30) provided on the outer wall of the abutting plate (19) for limiting the rotation of the limiting rod (28) ), one end of the mounting groove (27) communicates with the side wall of the abutting plate (19). 6. A waterproof digital pressure gauge according to claim 5, characterized in that: the limiting assembly (30) comprises a mounting plate on one side wall of the abutting plate (19) away from the stud (18) A hole (31), a limit sleeve (32) slidably connected to the side wall of the abutting plate (19), a long rod (33) fixedly connected to the inner wall of the limit sleeve (32), the long rod (33) The inner wall of the limiting sleeve (32) is slidably connected to the side wall of the abutting plate (19). 7. A waterproof digital pressure gauge according to claim 6, characterized in that: the abutting member (29) comprises a pressing rod (34) and a sleeve rotatably connected to the inner walls on both sides of the installation groove (27) An abutting torsion spring (35) provided on the outer wall of the abutting rod (34), the two ends of the abutting torsion spring (35) are respectively fixedly connected to the inner wall of the installation groove (27) and the abutting rod (34), One end of the limiting rod (28) is fixedly connected to the outer wall of the pressing rod (34). 8 . The waterproof digital pressure gauge according to claim 7 , wherein a pressing ball ( 36 ) is connected to the end face of the limiting rod ( 28 ) away from the pressing rod ( 34 ). 9 .

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