CN220651896U - Full vacuum pressure switch - Google Patents

Abstract

The utility model relates to a full vacuum pressure switch, which belongs to the technical field of pressure switches and comprises a shell, a cover body and an inserting sheet, wherein a moving assembly is arranged in the shell, an upper contact is arranged in the shell, a reed is fixed in the shell, a lower contact is fixed on the upper surface of the reed and is abutted against the upper contact, a diaphragm is arranged in the shell, a moving rod is fixed on the upper surface of the diaphragm, the moving rod is fixed on the lower surface of the reed, the moving assembly comprises a cylinder body which is connected in the shell in a sliding manner, a thread groove is formed in the inner peripheral wall of the shell, and external threads are fixed on the outer side of the cylinder body. This full vacuum pressure switch is provided with the removal subassembly, and the response value of removal subassembly ability adjustment switch is through rotating the lid to cooperation external screw thread, thread groove and barrel can make the movable rod remove, make the switch adjust its sensitivity according to specific demand and scene, in order to adapt to different user demands.

Description

Full vacuum pressure switch

Technical Field

The utility model relates to the technical field of pressure switches, in particular to a full-vacuum pressure switch.

Background

The full vacuum pressure switch is a device for controlling a vacuum system, can monitor and regulate the pressure in the vacuum system, is commonly used in industry, laboratory and other applications to ensure the normal operation and safety of the vacuum system, adopts advanced electronic technology and high-precision sensors, has higher reliability and measurement precision, and can provide stable and accurate pressure monitoring and control to ensure the safe operation of the system.

For example, chinese patent publication No. CN 201302675Y discloses a vacuum pressure controller, which comprises a protective housing, a plastic housing, a fixing ring, left and right inserting sheets connected with an electric switch and a joint as a pressure interface, wherein an upper cover is mounted on the protective housing, the upper cover is fixedly connected with the joint, the fixing ring is fixed with the outer wall of the plastic housing, a cover plate is arranged at the bottom of the plastic housing, a left inserting pin is connected with the left inserting sheet, a right inserting pin is connected with the right inserting sheet, a reed is connected with the left inserting pin, a stationary contact is connected with the right inserting pin, a movable end of the reed is connected with a movable contact corresponding to the stationary contact, a space between the protective housing and the plastic housing is filled with sealant, a limit plate is fixedly mounted at the bottom of the cover plate, a pre-stress membrane is arranged between the limit plate and the upper cover, a guide rod is supported on the pre-stress membrane, and the other end of the guide rod passes through the limit plate and the cover plate to contact or approach the reed. The utility model has the advantages of small volume, safe and reliable action and convenient use.

The vacuum pressure controller is safe and reliable when in use, and is convenient to use, but the vacuum pressure controller still has some defects when in use, for example, the sensing value of the controller is fixed, the sensing value of the controller cannot be adjusted, and when the controller is used in certain scenes needing to adjust the sensing value, the controller cannot be suitable, so that the flexibility of the controller is reduced.

Disclosure of Invention

Aiming at the defects of the prior art, the utility model provides a full-vacuum pressure switch which has the advantages of high flexibility and the like, and solves the problem that the induction value of a controller cannot be adjusted.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides a full vacuum pressure switch, includes casing, lid and inserted sheet, be equipped with the removal subassembly in the casing, the inside of casing is equipped with the contact, the inside of casing is fixed with the reed, the upper surface of reed is fixed with down the contact, down the contact and go up the contact looks butt, the inside of casing is equipped with the diaphragm, the upper surface of diaphragm is fixed with the movable rod, the lower surface at the reed is fixed to the movable rod.

Further, the mobile component includes the barrel of sliding connection in the casing inside, the thread groove has been seted up to the inner peripheral wall of casing, the outside of barrel is fixed with the external screw thread, external screw thread and thread groove threaded connection, the bottom of barrel runs through and extends to the outside of casing, the inside of barrel is fixed with the limiting plate, the diaphragm butt is between the upper surface of limiting plate and the interior roof of barrel, the lid butt is at the interior bottom wall of barrel, the bottom surface of lid runs through and extends to the outside of barrel, two constant head tanks have been seted up to the up end of lid, the inner peripheral wall of barrel is fixed with two locating pieces, the lower surface of locating piece runs through and extends to the inside of constant head tank, locating piece sliding connection is in the inside of constant head tank.

Further, the cylinder body moves linearly up and down in the shell, and the size of the external thread is matched with the size of the thread groove.

Further, the longitudinal section of the limiting plate is circular, and the width of the positioning block is matched with the width of the inner cavity of the positioning groove.

Further, the cylinder body is hollow in the inside and is cylindrical, and through holes are formed in the top surface and the bottom surface of the cylinder body.

Compared with the prior art, the technical scheme of the application has the following beneficial effects:

this full vacuum pressure switch is provided with the removal subassembly, and the response value of removal subassembly ability adjustment switch is through rotating the lid to cooperation external screw thread, thread groove and barrel can make the movable rod remove, make the switch adjust its sensitivity according to specific demand and scene, in order to adapt to different user demands.

Drawings

FIG. 1 is a schematic diagram of the structure of the present utility model;

FIG. 2 is a schematic view of the internal structure of the housing of the present utility model;

FIG. 3 is a schematic diagram of a mobile assembly according to the present utility model.

In the figure: 1. a reed; 2. a housing; 3. inserting sheets; 4. an upper contact; 5. a lower contact; 6. a membrane; 7. a cover body; 8. a moving assembly; 801. a cylinder; 802. a limiting plate; 803. a positioning groove; 804. a positioning block; 805. a thread groove; 806. an external thread; 9. and (3) moving the rod.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Referring to fig. 1-2, a full vacuum pressure switch in this embodiment includes a housing 2, a cover 7 and an insert 3, a moving assembly 8 is disposed in the housing 2, the moving assembly 8 can adjust the sensing value of the switch, an upper contact 4 is disposed in the housing 2, a reed 1 is fixed in the housing 2, the reed 1 can separate the upper contact 4 from a lower contact 5 after the switch is separated from a vacuum system, the connection of a circuit is disconnected, the upper surface of the reed 1 is fixed with the lower contact 5, the lower contact 5 contacts with the upper contact 4, the switch can communicate the circuit, the lower contact 5 contacts with the upper contact 4, the sensing value of the switch is adjusted by adjusting the distance between the upper contact 4 and the lower contact 5, so that the switch is suitable for use requirements of different scenes, a diaphragm 6 is disposed in the housing 2, a moving rod 9 is fixed on the upper surface of the diaphragm 6, the moving rod 9 moves along with the movement of the diaphragm 6, and the moving rod 9 is fixed on the lower surface of the reed 1.

Referring to fig. 3, the moving assembly 8 in this embodiment includes a cylinder 801 slidably connected inside a housing 2, a scale groove is formed on the outer side of the cylinder 801, after the cylinder 801 moves, the moving distance of the cylinder 801 can be determined through the scale groove, a thread groove 805 is formed on the inner peripheral wall of the housing 2, and after the cylinder 801 rotates, the cylinder 801 can rotate an external thread 806 in the thread groove 805.

External threads 806 are fixed on the outer side of the cylinder 801, and under the cooperation of the external threads 806 and the thread grooves 805, the cylinder 801 can move in the shell 2 after the cylinder 801 rotates, the external threads 806 are in threaded connection with the thread grooves 805, and the bottom end of the cylinder 801 penetrates and extends to the outer side of the shell 2.

The inside of barrel 801 is fixed with limiting plate 802, and after barrel 801 moved, barrel 801 cooperation limiting plate 802 can drive diaphragm 6 and remove in casing 2, and diaphragm 6 butt is between the interior roof of limiting plate 802 and barrel 801, and lid 7 butt is at the interior bottom wall of barrel 801, and the bottom surface of lid 7 runs through and extends to the outside of barrel 801, and two constant head tanks 803 have been seted up to the up end of lid 7.

After the cover 7 rotates, the cylinder 801 rotates synchronously with the cover 7 due to the positioning block 804 being positioned in the positioning groove 803, the two positioning blocks 804 are fixed on the inner peripheral wall of the cylinder 801, the two positioning blocks 804 are symmetrically distributed on the left and right sides of the central axis of the housing 2, the lower surface of the positioning block 804 penetrates through and extends to the inside of the positioning groove 803, and the positioning block 804 is slidably connected to the inside of the positioning groove 803.

Barrel 801 is in the linear motion about in casing 2, and the size of external screw thread 806 and the size looks adaptation of thread groove 805, limiting plate 802 longitudinal section's shape is the ring shape, and the width of locating piece 804 and the width looks adaptation of constant head tank 803 inner chamber, and the cylinder of through-hole is all seted up to the inside cavity and top surface and bottom surface to the shape of barrel 801.

By rotating the cylinder 801 and moving the cylinder 801 in the housing 2 by the screw groove 805 and the external screw 806, the induction value of the switch can be adjusted according to the movement of the cylinder 801.

The mobile component 8 can enable the switch to adjust the sensitivity according to specific requirements and scenes so as to adapt to different use requirements.

The working principle of the embodiment is as follows:

(1) When the induction value of the switch needs to be adjusted, the cover body 7 can be rotated, after the cover body 7 rotates, the cylinder 801 can synchronously rotate along with the cover body 7 due to the fact that the positioning block 804 is limited in the positioning groove 803, after the cylinder 801 rotates, the cylinder 801 can enable the external screw thread 806 to rotate in the screw thread groove 805, under the cooperation of the external screw thread 806 and the screw thread groove 805, the cylinder 801 can be moved in the shell 2 after the cylinder 801 rotates, and when the cylinder 801 moves, the cylinder 801 cooperates with the limiting plate 802 to drive the diaphragm 6 to move in the shell 2, and along with the movement of the diaphragm 6, the moving rod 9 also moves.

(2) After the movable rod 9 moves, the reed 1 can deform, after the reed 1 deforms, the position of the lower contact 5 in the shell 2 can be changed, when the switch is not in operation, the induction value of the switch is adjusted by adjusting the distance between the upper contact 4 and the lower contact 5 so that the switch is suitable for the use requirements of different scenes, when the switch is in operation, the switch is connected with a vacuum system, after the diaphragm 6 is stressed, the movable rod 9 moves upwards, the movable rod 9 deforms the reed 1 again, the lower contact 5 on the reed 1 contacts with the upper contact 4, and the switch can be communicated with a line.

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

Claims (5)

1. The utility model provides a full vacuum pressure switch, includes casing (2), lid (7) and inserted sheet (3), its characterized in that: be equipped with in casing (2) and remove subassembly (8), the inside of casing (2) is equipped with contact (4), the inside of casing (2) is fixed with reed (1), the upper surface of reed (1) is fixed with down contact (5), contact (5) and upper contact (4) looks butt down, the inside of casing (2) is equipped with diaphragm (6), the upper surface of diaphragm (6) is fixed with movable rod (9), movable rod (9) are fixed at the lower surface of reed (1).

2. A full vacuum pressure switch as claimed in claim 1, wherein: the mobile assembly (8) comprises a cylinder body (801) which is slidably connected inside a shell (2), a thread groove (805) is formed in the inner peripheral wall of the shell (2), an external thread (806) is fixed on the outer side of the cylinder body (801), the external thread (806) is in threaded connection with the thread groove (805), the bottom end of the cylinder body (801) penetrates through and extends to the outer side of the shell (2), a limiting plate (802) is fixed in the cylinder body (801), a diaphragm (6) is abutted between the upper surface of the limiting plate (802) and the inner top wall of the cylinder body (801), a cover body (7) is abutted against the inner bottom wall of the cylinder body (801), the bottom surface of the cover body (7) penetrates through and extends to the outer side of the cylinder body (801), two positioning grooves (803) are formed in the upper end face of the cover body (7), the inner peripheral wall of the cylinder body (801) is fixed with two positioning blocks (804), the lower surface of each positioning block (804) penetrates through and extends to the inner side of each positioning block (803), and the positioning blocks (804) are slidably connected in the inner side of each positioning groove (803).

3. A full vacuum pressure switch as claimed in claim 2, wherein: the cylinder body (801) moves linearly up and down in the shell (2), and the size of the external thread (806) is matched with the size of the thread groove (805).

4. A full vacuum pressure switch as claimed in claim 2, wherein: the longitudinal section of the limiting plate (802) is circular, and the width of the positioning block (804) is matched with the width of the inner cavity of the positioning groove (803).

5. A full vacuum pressure switch as claimed in claim 2, wherein: the cylinder body (801) is hollow in the inside and is cylindrical, and through holes are formed in the top surface and the bottom surface of the cylinder body.