AC-DC two-gear adjustable miniature pressure switch

Abstract

The alternating current and direct current two-gear adjustable miniature pressure switch disclosed by the invention can work in a state that direct current is 75V and 2A or alternating current is 240V and 15A. The steam cup comprises a steam cup, a sealing ring, a film sheet, a high-voltage elastic sheet, an elastic sheet butterfly ring, a low-voltage elastic sheet, an elastic sheet combination seat, a push rod, a static contact insertion sheet, a movable contact insertion sheet, a beryllium copper sheet, a magnet, an insertion sheet combination seat, an insertion sheet seat gland, a knob, a knob seat, a knob handle and a torsion spring. Two-gear pressure adjustment can be achieved.

Description

Technical Field

[0001] This invention relates to the field of air compressor pressure regulating switch technology, and in particular to a miniature pressure switch with AC / DC two-level adjustable range. Background Technology

[0002] The applicant has been engaged in the research and development and production of air compressor pressure regulating switches, and has applied for a number of Chinese invention patents for air compressor pressure regulating switches, such as the adjustable pressure micro switch disclosed in Chinese invention patent authorization announcement number CN103151223B, the air compressor pressure control and regulating device disclosed in Chinese invention patent authorization announcement number CN101498294B, the new type of pressure adjustable switch device disclosed in Chinese invention patent authorization announcement number CN101504897B, the automatic air pressure switch for air compressor disclosed in Chinese invention patent authorization announcement number CN100568435C, an automatic unloading check valve for air compressor disclosed in Chinese invention patent authorization announcement number CN100567737C, an unloading check valve for air compressor disclosed in Chinese invention patent authorization announcement number CN100422611C, and a small dual-potential pressure switch with OFF / ON function disclosed in Chinese invention patent authorization announcement number CN103794405B. The applicant also founded Hengyang Xike Sensor Manufacturing Co., Ltd., to implement the above-mentioned patented products.

[0003] The existing air compressor pressure regulating switch only has one setting and cannot be used for adjusting two-setting pressure switches. Summary of the Invention

[0004] The technical problem to be solved by the present invention is that the existing air compressor pressure regulating switch only has one setting and cannot be used for adjusting two-level pressure switches. Therefore, the present invention provides a micro pressure switch that is adjustable for both AC and DC pressure.

[0005] The technical problem to be solved by this invention can be achieved through the following technical solution:

[0006] A dual-range AC / DC adjustable miniature pressure switch includes:

[0007] A steam cup, the steam cup having an air inlet; characterized in that it further includes:

[0008] A spring-loaded assembly seat, the bottom of which is anchored to the top of the gas cup and a pressure sensing chamber is provided inside both. A first push rod hole is provided at the center of the spring-loaded assembly seat and the first push rod hole is connected to the pressure sensing chamber.

[0009] A spring-loaded butterfly ring is configured in the air pressure sensing chamber and can float up and down in the air pressure sensing chamber. A push rod is provided at the center of the spring-loaded butterfly ring, and a V-shaped groove is provided at the top of the push rod.

[0010] A low-pressure spring is disposed in the air pressure sensing cavity and sleeved on the push rod column. The low-pressure spring seat is placed on the top surface of the spring butterfly ring and is located between the spring assembly seat and the spring butterfly ring.

[0011] The top surface of the low-pressure spring is higher than the bottom of the V-groove;

[0012] A high-pressure spring is disposed in the pressure sensing cavity and located between the spring disc ring and the steam cup;

[0013] A insert assembly seat is installed on the spring assembly seat, and a second push rod hole is provided in the insert assembly seat, the second push rod hole being aligned with the first push rod hole;

[0014] A plug assembly installed within the plug assembly socket, the plug assembly having a pair of plugs connected to an external power source;

[0015] A push rod passes through the first push rod hole, the second push rod hole, and the insert assembly. The push rod can move up and down and rotate, achieving up and down movement during rotation. At the end of the push rod facing the push rod post, there is a V-shaped top that mates with the V-groove. When the push rod rotates to the first position, the V-shaped top falls into the V-groove and abuts against the low-pressure spring, placing the insert assembly in the first working position. When the push rod rotates to the second position, the V-shaped top exits the V-groove and abuts against the top surface of the push rod post, placing the insert assembly in the second working position.

[0016] A insert seat cover is provided, and the insert seat cover and the insert assembly seat are fixed together on the spring assembly seat by fasteners. A third push rod hole is provided in the insert seat cover. The third push rod hole is aligned with the second push rod hole and the first push rod hole. The push rod passes upward through the third push rod hole.

[0017] A knob, which is connected to the push rod, drives the push rod to rotate;

[0018] A knob base, wherein the knob is rotatably disposed within the knob base, and the knob base is fixed to the insert seat cover;

[0019] A torsion spring, one end of which is connected to the knob and the other end of which is connected to the knob base;

[0020] A knob handle is rotatably mounted on the knob base and connected to the knob, thereby driving the knob to operate.

[0021] In a preferred embodiment of the present invention, a magnet is further included, which is disposed in the insert assembly seat to attract the ash generated by the electric arc produced when the insert assembly is pulled open.

[0022] In a preferred embodiment of the present invention, the high-pressure spring is pressed into the gas cup by a diaphragm and a sealing ring to seal the air inlet.

[0023] In a preferred embodiment of the present invention, the push rod consists of a flat push rod section and a cylindrical push rod section. The V-shaped top is disposed at the end of the cylindrical push rod away from the flat push rod. A step is provided at the connection between the flat push rod and the cylindrical push rod. The flat push rod passes upward through the insert assembly. The step acts on the insert assembly, pushing the insert assembly from the first working position to the second working position. The insert assembly can return from the second working position to the first working position under its own rebound force.

[0024] In a preferred embodiment of the present invention, the insert assembly includes a moving contact insert, a stationary contact insert, and a beryllium copper sheet. The beryllium copper sheet has a fourth push rod hole and a moving contact, and the stationary contact insert has a stationary contact. A pair of connectors connected to an external power source are respectively disposed on the moving contact insert and the stationary contact insert. The flat push rod passes upward through the fourth push rod hole, and the step acts on the fourth push rod hole to push the beryllium copper sheet from a first working position to a second working position. The beryllium copper sheet can return from the second working position to the first working position under its own rebound force. The moving contact insert and the stationary contact insert are arranged parallel to each other in the insert assembly seat. The beryllium copper sheet is located between the moving contact insert and the stationary contact insert and is drivenly connected to the moving contact insert. When the beryllium copper sheet is in the first working position and the second working position, it drives the moving contact insert to be in the first working position and the second working position, respectively.

[0025] In a preferred embodiment of the present invention, the first working position is a low-pressure regulating working position, with the pressure adjusted between 3 bar and 4 bar, that is, it is turned on when the air pressure is 3 bar and turned off when the air pressure is 4 bar; the second working position is a high-pressure regulating working position, with the pressure adjusted between 6 bar and 8 bar, that is, it is turned on when the air pressure is 6 bar and turned off when the air pressure is 8 bar.

[0026] In a preferred embodiment of the present invention, the AC / DC two-level adjustable miniature pressure switch can operate at DC 75V, 2A or AC 240V, 15A.

[0027] Because of the above technical solution, the working principle of this invention is as follows:

[0028] By rotating the push rod, it moves up and down. When the push rod reaches the first position, the V-shaped top on the push rod falls into the V-groove and presses against the low-pressure spring, placing the beryllium copper plate in the insert assembly in the first working position, i.e., the low-pressure adjustment working position. When the air pressure is 3 bar, the low-pressure spring drives the push rod downward, the beryllium copper plate resets, and the moving contact on the moving contact insert contacts the stationary contact on the stationary contact insert. When the air pressure is 4 bar, the low-pressure spring drives the push rod upward, the push rod pushes the beryllium copper plate, and the moving contact on the moving contact insert contacts the stationary contact. The stationary contacts on the contact insert separate. When the push rod rotates to the second position, the V-shaped top retracts from the V-groove and presses against the top surface of the push rod post, placing the insert assembly in the second working position. At a pressure of 6 bar, the high-pressure spring deforms, driving the spring disc ring downwards, and the beryllium copper sheet resets, causing the moving contact on the moving contact insert to contact the stationary contact on the stationary contact insert. At a pressure of 8 bar, the high-pressure spring drives the push rod upwards, pushing the beryllium copper sheet and causing the moving contact on the moving contact insert to separate from the stationary contact on the stationary contact insert. This invention enables two-level pressure adjustment and has passed EU, North American, and US quality certificates issued by PUV and ETL. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the external shape of the present invention.

[0030] Figure 2 This is one of the structural schematic diagrams of the present invention.

[0031] Figure 3 for Figure 2 AA sectional view.

[0032] Figure 4 This is one of the structural schematic diagrams of the present invention.

[0033] Figure 5 for Figure 4 BB cross-sectional view.

[0034] Figure 6 This is an exploded view of the present invention.

[0035] Figure 7 This is a schematic diagram of the structure of the steam cup of the present invention.

[0036] Figure 8 This is a schematic diagram of the high-pressure spring sheet structure of the present invention.

[0037] Figure 9 This is a schematic diagram of the spring-loaded butterfly ring structure of the present invention.

[0038] Figure 10 This is a schematic diagram of the low-pressure spring sheet structure of the present invention.

[0039] Figure 11This is a schematic diagram of the spring assembly seat of the present invention.

[0040] Figure 12 This is a schematic diagram of the push rod structure of the present invention.

[0041] Figure 13 A schematic diagram of the static contact insert structure of the present invention.

[0042] Figure 14 This is a schematic diagram of the moving contact insert structure of the present invention.

[0043] Figure 15 This is a schematic diagram of the beryllium copper sheet structure of the present invention.

[0044] Figure 16 This is a schematic diagram of the insert assembly structure of the present invention.

[0045] Figure 17 This is a schematic diagram of the insert seat cover structure of the present invention.

[0046] Figure 18 This is a schematic diagram of the knob structure of the present invention.

[0047] Figure 19 This is a schematic diagram of the knob base structure of the present invention.

[0048] Figure 20 This is a schematic diagram of the knob handle structure of the present invention. Detailed Implementation

[0049] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0050] See Figures 1 to 20 The micro pressure switch shown in the figure is an AC / DC two-level adjustable switch that can operate at DC 75V, 2A or AC 240V, 15A.

[0051] It includes a gas cup 1, a sealing ring 2, a diaphragm sheet 3, a high-pressure spring sheet 4, a spring sheet butterfly ring 5, a low-pressure spring sheet 6, a spring sheet assembly seat 7, a push rod 8, a stationary contact insert 9, a moving contact insert 10, a beryllium copper sheet 11, a magnet 12, an insert assembly seat 13, an insert seat cover 14, a knob 15, a knob seat 16, a knob handle 17, and a torsion spring 18.

[0052] The cup 1 has an air inlet 1a. The bottom of the spring assembly seat 7 is anchored to the top of the cup 1 and a pressure sensing chamber 19 is provided inside both. A first push rod hole 7a is provided in the center of the spring assembly seat 7 and communicates with the pressure sensing chamber 19.

[0053] The spring-loaded butterfly ring 5 is disposed in the pressure sensing cavity 19 and can float up and down within the pressure sensing cavity 19. A push rod post 5a is provided at the center of the spring-loaded butterfly ring 5, and a V-shaped groove 5b is provided at the top of the push rod post 5a. In addition, an upper recess 5c and a lower recess 5d are respectively provided on the upper and lower end faces of the spring-loaded butterfly ring 5.

[0054] The low-pressure spring 6 is generally pot-shaped with a hole 6a in the center, so that the low-pressure spring 6 can be fitted onto the push rod post 5a and placed in the air pressure sensing cavity 19. The low-pressure spring 6 is placed on the upper end surface of the spring butterfly ring 5 and is located between the spring assembly seat 7 and the spring butterfly ring 5. The top surface of the low-pressure spring 6 is higher than the bottom of the V-shaped groove 5b.

[0055] The high-pressure spring 4 is pot-shaped and is located in the air pressure sensing chamber 19 between the spring shroud 5 and the steam cup 1. The high-pressure spring 4 is pressed into the steam cup 1 by the diaphragm 3 and the sealing ring 2 to seal the air inlet 1a.

[0056] The insert assembly 13 is mounted on the spring assembly 7. A second push rod hole 13a is provided in the insert assembly 13, and the second push rod hole 13a is aligned with the first push rod hole 7a. A magnet mounting slot 13b is provided in the insert assembly 13, and the magnet 12 is installed in the magnet mounting slot 13b.

[0057] The insert assembly is installed in the insert assembly seat 13. The insert assembly includes a moving contact insert 10, a stationary contact insert 9, and a beryllium copper sheet 11. The beryllium copper sheet 11 has a fourth push rod hole 11a and a moving contact 11b. The stationary contact insert 9 is provided with a stationary contact 9a. A pair of connectors 10a and 9b connected to an external power source are respectively provided on the moving contact insert 10 and the stationary contact insert 9.

[0058] The push rod 8 consists of a flat push rod 8a and a cylindrical push rod 8b. A V-shaped top 8c is located at the end of the cylindrical push rod 8b away from the flat push rod 8a. A step 8d is provided at the connection between the flat push rod 8a and the cylindrical push rod 8b. The push rod 8 passes through the first push rod hole 7a, the second push rod hole 13a, and upwards through the fourth push rod hole 11a on the beryllium copper sheet 11 of the insert assembly. The push rod 8 can move up and down and rotate, achieving up and down movement during rotation.

[0059] The flat push rod 8a passes upward through the fourth push rod hole 11a on the beryllium copper sheet 11 of the insert assembly, and the step 8d acts on the beryllium copper sheet 11 of the insert assembly, pushing the beryllium copper sheet 11 of the insert assembly from the first working position to the second working position; the beryllium copper sheet 11 of the insert assembly can return from the second working position to the first working position under its own elastic force.

[0060] When the push rod 8 rotates to the first position, the V-shaped top 8c falls into the V-shaped groove 5b and abuts against the low-pressure spring 6, so that the insert assembly is in the first working position; when the push rod 8 rotates to the second position, the V-shaped top 8c exits the V-shaped groove 5b and abuts against the top surface of the push rod post 5a, so that the insert assembly is in the second working position.

[0061] The angle between the first and second positions of push rod 8 is 90°.

[0062] The moving contact insert 10 and the stationary contact insert 9 are arranged parallel to each other in the insert assembly seat 13. The beryllium copper sheet 11 is located between the moving contact insert 10 and the stationary contact insert 9 and is driven to connect with the moving contact insert 10. When the beryllium copper sheet 11 is in the first working position and the second working position respectively, it drives the moving contact insert 10 to be in the first working position and the second working position.

[0063] Magnet 12 is placed inside insert assembly seat 13 to attract the ash generated by the electric arc produced when the insert assembly is pulled apart.

[0064] The insert holder cover 14 and the insert assembly 13 are fixed to the spring assembly 7 together by three long screws 20. A third push rod hole 14a is provided in the insert holder cover 14. The third push rod hole 14a is aligned with the second push rod hole 13a and the first push rod hole 7a. The push rod 8 passes upward through the third push rod hole 14a.

[0065] The knob base 16 is mounted on the insert seat cover 14 with two short screws 21. The knob 15 is rotatably mounted inside the knob base 16. One end of the torsion spring 18 is connected to the knob 15 and the other end is connected to the knob base 16. The knob handle 17 is rotatably mounted on the knob base 16 and connected to the knob 15, driving the knob 15 to move.

[0066] The first working position is a low-pressure regulating position, where the pressure is adjusted between 3 bar and 4 bar; that is, it is turned on when the air pressure is 3 bar and turned off when the air pressure is 4 bar. The second working position is a high-pressure regulating position, where the pressure is adjusted between 6 bar and 8 bar; that is, it is turned on when the air pressure is 6 bar and turned off when the air pressure is 8 bar. Of course, the ON and OFF pressure values ​​of the AC / DC two-level adjustable micro pressure switch of this invention can be set by the user and are not limited to 3 / 4 or 6 / 8 bar. The low-pressure spring 6 and the high-pressure spring 4 are prepared according to the set pressure values.

Claims

1. A dual-range AC / DC adjustable miniature pressure switch, comprising: A steam cup, the steam cup having an air inlet; characterized in that it further includes: A spring-loaded assembly seat, the bottom of which is anchored to the top of the gas cup and a pressure sensing chamber is provided inside both. A first push rod hole is provided at the center of the spring-loaded assembly seat and the first push rod hole is connected to the pressure sensing chamber. A spring-loaded butterfly ring is configured in the air pressure sensing chamber and can float up and down in the air pressure sensing chamber. A push rod is provided at the center of the spring-loaded butterfly ring, and a V-shaped groove is provided at the top of the push rod. A low-pressure spring is disposed in the air pressure sensing cavity and sleeved on the push rod column. The low-pressure spring seat is placed on the top surface of the spring ring and is located between the spring assembly seat and the spring ring. The top surface of the low-pressure spring is higher than the bottom of the V-groove; A high-pressure spring is disposed in the pressure sensing cavity and located between the spring disc ring and the steam cup; A insert assembly seat is installed on the spring assembly seat, and a second push rod hole is provided in the insert assembly seat, the second push rod hole being aligned with the first push rod hole; A plug assembly installed within the plug assembly socket, the plug assembly having a pair of plugs connected to an external power source; A push rod passes through the first push rod hole, the second push rod hole, and the insert assembly. The push rod can move up and down and rotate, achieving up and down movement during rotation. At the end of the push rod facing the push rod post, there is a V-shaped top that mates with the V-groove. When the push rod rotates to the first position, the V-shaped top falls into the V-groove and abuts against the low-pressure spring, placing the insert assembly in the first working position. When the push rod rotates to the second position, the V-shaped top exits the V-groove and abuts against the top surface of the push rod post, placing the insert assembly in the second working position. A insert seat cover is provided, and the insert seat cover and the insert assembly seat are fixed together on the spring assembly seat by fasteners. A third push rod hole is provided in the insert seat cover. The third push rod hole is aligned with the second push rod hole and the first push rod hole. The push rod passes upward through the third push rod hole. A knob, which is connected to the push rod, drives the push rod to rotate; A knob base, wherein the knob is rotatably disposed within the knob base, and the knob base is fixed to the insert seat cover; A torsion spring, one end of which is connected to the knob and the other end of which is connected to the knob base; A knob handle is rotatably mounted on the knob base and connected to the knob, thereby driving the knob to operate.

2. The AC / DC two-level adjustable miniature pressure switch according to claim 1, characterized in that, It also includes a magnet disposed within the insert assembly base to attract ash generated by the electric arc produced when the insert assembly is pulled apart.

3. The AC / DC two-level adjustable miniature pressure switch according to claim 2, characterized in that, The high-pressure spring is pressed into the gas cup by a diaphragm and a sealing ring to seal the air inlet.

4. The AC / DC two-level adjustable miniature pressure switch according to claim 3, characterized in that, The push rod consists of a flat push rod section and a cylindrical push rod section. The V-shaped top is located at the end of the cylindrical push rod away from the flat push rod. A step is provided at the connection between the flat push rod and the cylindrical push rod. The flat push rod passes upward through the insert assembly. The step acts on the insert assembly, pushing the insert assembly from the first working position to the second working position. The insert assembly can return from the second working position to the first working position under its own rebound force.

5. A dual-range AC / DC adjustable miniature pressure switch according to claim 4, characterized in that, The insert assembly includes a moving contact insert, a stationary contact insert, and a beryllium copper sheet. The beryllium copper sheet has a fourth push rod hole and a moving contact, and the stationary contact insert has a stationary contact. A pair of connectors connected to an external power source are respectively disposed on the moving contact insert and the stationary contact insert. A flat push rod passes upward through the fourth push rod hole, and a step acts on the fourth push rod hole to push the beryllium copper sheet from a first working position to a second working position. The beryllium copper sheet can return from the second working position to the first working position under its own rebound force. The moving contact insert and the stationary contact insert are arranged parallel to each other in the insert assembly seat. The beryllium copper sheet is located between the moving contact insert and the stationary contact insert and is drivenly connected to the moving contact insert. When the beryllium copper sheet is in the first working position and the second working position, it drives the moving contact insert to be in the first working position and the second working position, respectively.

6. The AC / DC two-level adjustable miniature pressure switch according to claim 5, characterized in that, The first working position is a low-pressure adjustment working position, with the pressure adjusted between 3 bar and 4 bar, that is, it is turned on when the air pressure is 3 bar and turned off when the air pressure is 4 bar; the second working position is a high-pressure adjustment working position, with the pressure adjusted between 6 bar and 8 bar, that is, it is turned on when the air pressure is 6 bar and turned off when the air pressure is 8 bar.

7. A dual-range AC / DC adjustable miniature pressure switch according to claim 6, characterized in that, The AC / DC two-level adjustable miniature pressure switch can operate at DC 75V, 2A or AC 240V, 15A.

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