TWM482064U - Diaphragm type pressure gauge - Google Patents

Description

Diaphragm pressure gauge

This creation is related to a pressure gauge, especially a diaphragm pressure gauge for determining the pressure value of a gas or liquid.

Conventional mechanical pressure gauges include Baden tube pressure gauges and diaphragm pressure gauges. The Baden tube pressure gauges are fed into the Baden tube by gas or liquid pressure, and the gears are driven by the slight change of the Baden tube. The pointer is driven to display the pressure of the gas or liquid. The diaphragm pressure gauge enters the watch by the pressure of gas or liquid, pushes the diaphragm inside the watch, and then drives the spring by the diaphragm. The relative sliding of the spring and the torsion spring drives the pointer, which can also display the pressure of the gas or liquid.

However, the diaphragm of the conventional diaphragm type pressure gauge can withstand a limited pressure, and different diaphragms must be used depending on the pressure, but it is necessary to manufacture a variety of pressure gauges, resulting in an increase in management and manufacturing costs. Moreover, due to the limited pressure that the diaphragm can withstand, many applications may cause excessive pressure transients due to high pressure conditions, and the pressure may easily cause damage to the diaphragm, which is commonly referred to as a burst. Therefore, how to improve the diaphragm type pressure gauge to withstand a large pressure or an instantaneous increase in pressure is a problem that the creation is intended to overcome.

The purpose of this creation is to provide a diaphragm type pressure gauge that is transparent The thimble pushes the diaphragm to allow the diaphragm to withstand high pressures for durability and damage prevention.

In order to achieve the above objectives, the creation of the diaphragm pressure gauge The technical means includes: a case having a cavity, a window coupled to one end of the cavity, a through hole disposed in the case, the through hole communicating with the cavity; a movement, setting a cavity in the case having a pair of through holes; a piston rod movably disposed in the through hole, one end pushing the diaphragm, the other end extending in the through hole; and an oil seal And disposed in the through hole, the outer annular surface abuts against the inner wall of the through hole, and the inner annular surface abuts against the piston rod.

a diaphragm type pressure gauge according to the above preferred technical means, A through hole is provided with a larger diameter oil seal mounting hole, and the oil seal is disposed in the oil seal mounting hole.

a diaphragm type pressure gauge according to the above preferred technical means, The piston rod has a pushing portion corresponding to one end of the diaphragm.

a diaphragm type pressure gauge according to the above preferred technical means, The oil seal is a three-in-one oil seal.

a diaphragm type pressure gauge according to the above preferred technical means, The oil seal mounting hole has an internal thread segment, the internal thread segment is screwed with a fixing screw, and the piston rod extends through the fixing screw.

The diaphragm pressure gauge of the present invention can make a gas or a liquid Pushing the piston rod, and then pushing the diaphragm by the piston rod, so that the diaphragm pushes the pointer of the movement, thereby avoiding direct pressure on the diaphragm, so that the diaphragm pressure gauge can Withstand high pressures for durability and damage prevention.

1‧‧‧ case

12‧‧‧Window

13‧‧‧through hole

131‧‧‧ Oil seal mounting hole

132‧‧‧Threaded section

14‧‧‧ Fixed Department

2‧‧‧ Movement

20‧‧‧ fixed frame

21‧‧‧ dial

22‧‧‧ shaft

23‧‧‧ pointer

24‧‧‧needle plate

25‧‧‧God

26‧‧‧torsion spring

27‧‧‧Separator

28‧‧‧Spring seat

29‧‧‧ Spring

3‧‧‧ piston rod

31‧‧‧Pushing Department

4‧‧‧ oil seal

5‧‧‧ fixing screws

51‧‧‧Perforation

The first figure is a perspective view of a first preferred embodiment of the creation.

The second figure is a schematic cross-sectional view of a first preferred embodiment of the creation.

The third figure is an exploded schematic view of the first preferred embodiment of the creation.

The fourth figure is an exploded schematic view of the second preferred embodiment of the creation.

The structural features and other functions and objectives of the present invention are described in detail below with reference to the accompanying drawings. FIG. 1 is a schematic view showing a preferred embodiment of the present invention. The third embodiment is an exploded view of the preferred embodiment of the present invention. The preferred embodiment of the diaphragm pressure gauge of the present invention comprises a case 1, a movement 2, a piston rod 3 and an oil seal 4. Wherein: the case 1 is a hollow casing, and the inside of the casing has a cavity 11 , one end (top end) of the cavity 11 is combined with a transparent window 12 , and the opposite end (bottom end) or one side is provided with a The through hole 13 is connected to the cavity 11 from the outside.

The movement 2 is disposed in the cavity 11 of the watch case 1, and can be implemented as a coil spring drive movement, a lead screw drive movement, or any other movement that can be moved through the diaphragm. The illustration shows a coil spring driving movement as an example. A preferred embodiment has a fixing bracket 20 integrated in the cavity 11, a dial 21 disposed on the fixing frame 20, and a through-mounting bracket 20 and a dial 21. The rotating shaft 22, a pointer 23 coupled to the upper end of the rotating shaft 22, is coupled to the fixed frame 20 and abuts The needle plate 24 at the upper end of the pointer 23, the balance spring 25 and the torsion spring 26 coupled to the shaft body of the rotating shaft 23, a diaphragm 27 coupled to the lower portion of the fixing frame 20, and a spring seat 28 for connecting the lower end of the shaft shaft of the rotating shaft 22, And a set of springs 29 disposed on the rotating shaft 22 and the spring seat 28, such that the diaphragm 27 corresponds to the through hole 13, and by pushing the diaphragm 27, the torsion spring 26 is pushed by the rise of the spring 29 to rotate the rotating shaft 22 and the pointer 23. When the thrust disappears, the balance spring 22 and the pointer 23 can be returned to the original position by the balance spring 25.

The piston rod 3 is movably disposed in the through hole 13 and is used at the top for the top The diaphragm 27 is pushed, and the other end extends in the through hole 13. When the piston rod 3 is pushed by gas or liquid, the diaphragm 27 of the above-described movement 2 can be pushed up.

The oil seal 4 is disposed in the through hole 13, preferably a three-in-one oil The seal has its outer annular surface (outer lip) abutting against the inner wall of the through hole 13 and its inner annular surface (inner lip) abutting against the shaft of the piston rod 3 for preventing gas or liquid from passing through the through hole 13 Entering the cavity 11, thereby forming the diaphragm pressure gauge of the present invention.

As shown in the second and third figures, the creation of the case 1 One end (bottom end) is provided with a fixing portion 14, and the fixing portion 14 is preferably a screw, so that the through hole 13 is communicated to the cavity 11 through the fixing portion 14. Further, as shown in the second and fourth figures, a through hole 13 is provided with a larger diameter oil seal mounting hole 131, whereby the oil seal 4 is disposed in the oil seal mounting hole 131. Furthermore, the oil seal mounting hole 131 can be implemented with an internal thread segment 132, a fixing screw 5 is screwed into the internal thread segment 132, and a through hole 51 is formed in the center of the fixing screw 5, so that the piston rod 3 extends through the through hole 51 of the fixing screw 5. . In addition, the piston rod 3 of the present invention can be implemented with a pushing portion 31 corresponding to the upper end of the diaphragm 27, and the pushing portion 31 is preferably a disc body or a block body.

When the diaphragm pressure gauge of the present invention is used, the fixing portion 14 is utilized. Screwing in a pressure source, such as a gas or liquid receiving tank or a conveying pipe, can enable the gas or liquid to push the piston rod 3, and when the piston rod 3 moves into the surface, the piston rod 3 pushes the diaphragm 27, The diaphragm 27 can push the rotating shaft 22 of the movement 2 and the pointer 23 to rotate. The larger the pressure, the larger the rotation of the pointer 23, and the smaller the pressure, the smaller the rotation of the pointer 23, so that the pressure value of the gas or liquid can be displayed. Since the present creation does not allow the gas or liquid to directly push the diaphragm 27, but the piston rod 3 pushes the diaphragm 27, it is possible to control the pressure at the correct position of the diaphragm 27. Moreover, through the application of the piston rod 3 and the oil seal 4, the creation can prevent the pressure from directly pressing on the diaphragm 27, so that the diaphragm pressure gauge can withstand higher pressure, and can achieve durability, damage prevention, service life and manufacturing reduction. Cost and other effects.

In summary, the diaphragm pressure gauge of this creation has been practical. Sex and creative, the use of its technical means is also novel and undoubted, and the efficacy and design purposes are in line with the fact that it has been said to be reasonable and clear. To this end, a new type of patent application is filed in accordance with the law, but the bureau is requested to give a detailed examination and grant the patent as a prayer.

1‧‧‧ case

12‧‧‧Window

13‧‧‧through hole

131‧‧‧ Oil seal mounting hole

132‧‧‧Threaded section

14‧‧‧ Fixed Department

2‧‧‧ Movement

20‧‧‧ fixed frame

21‧‧‧ dial

22‧‧‧ shaft

23‧‧‧ pointer

24‧‧‧needle plate

25‧‧‧God

26‧‧‧torsion spring

27‧‧‧Separator

28‧‧‧Spring seat

29‧‧‧ Spring

3‧‧‧ piston rod

31‧‧‧Pushing Department

4‧‧‧ oil seal

5‧‧‧ fixing screws

51‧‧‧Perforation

Claims (5)

A diaphragm type pressure gauge, comprising: a case having a cavity, a window coupled to one end of the cavity, a through hole disposed in the case, the through hole communicating with the cavity; Provided in the cavity of the watch case, having a pair of diaphragms that should be through holes; a piston rod movably disposed in the through hole, one end pushing the diaphragm and the other end extending in the through hole; And an oil seal disposed in the through hole, the outer annular surface abutting against the inner wall of the through hole, and the inner annular surface abutting against the piston rod. The diaphragm type pressure gauge according to claim 1, wherein the through hole is provided with a larger diameter oil seal mounting hole, and the oil seal is disposed in the oil seal mounting hole. The diaphragm pressure gauge of claim 2, wherein the piston rod has a pushing portion corresponding to one end of the diaphragm. The diaphragm pressure gauge of claim 3, wherein the oil seal is a three-in-one oil seal. The diaphragm pressure gauge according to claim 4, wherein the oil seal mounting hole has an internal thread segment, the internal thread segment is screwed with a fixing screw, and the piston rod extends through the fixing screw.