Novel single-contact pressure switch

Abstract

The utility model relates to the technical field of pressure switches, and discloses a novel single-contact pressure switch, which comprises a spring base mounted at the bottom of an inner cavity of a sleeve, a spring mounted at the upper end of the spring base, a contact mounted at the upper end of the spring, an isolation diaphragm mounted at the upper end of the contact, and a pressure conduction mechanism mounted at the upper end of the isolation diaphragm. The pressure conduction mechanism comprises a bushing, a bushing inner cavity mounting base, a push rod and a second coil mounted at the lower end of the base, a bouncing diaphragm mounted at the lower end of the second coil, a first coil mounted at the lower end of the bouncing diaphragm, and a microswitch mechanism mounted at the upper end of the base; the microswitch mechanism comprises a connecting block, a microswitch is installed at the lower end of the connecting block, a coil is installed in an inner cavity of the connecting block, and a socket is installed at the upper end of the connecting block. The pressure switch using the microswitch has remarkable advantages in the aspects of precision, response speed, service life and reliability, and is suitable for various occasions needing high-precision control and quick response.

Description

Technical Field

[0001] The utility model relates to the technical field of pressure switch equipment, in particular to a novel single-contact pressure switch. Background Art

[0002] Pressure switches typically detect, display, alarm, and output control signals for media pressure signals. They are widely used in the petroleum, chemical, metallurgical, electric power, and water supply industries, measuring and controlling the gauge and absolute pressures of various gases and liquids. They are ideal intelligent measurement and control instruments for industrial sites. In the aerospace and military sectors, pressure switches are also widely used to detect changes in gas and oil pressures and provide alarm signals. However, current pressure switches used on road-mounted vehicles and aircraft are large, difficult to assemble and disassemble, and difficult to adjust the switch's on / off pressure settings as needed. This is especially true when installed at pressures of tens of MPa. They also suffer from a short service life, unstable signal output at higher pressures, and significant signal output errors in high and low temperature environments. Consequently, they suffer from insufficient pressure tolerance.

[0003] The application number is CN202021539238.9, which discloses a contact-type pressure switch involving the field of pressure switch equipment, comprising an electrical connector and a shell, one end of the shell is set as a pressure inlet, and the other end is threadedly connected to the electrical connector; the electrical connector is provided with an inner cavity, in which an on-off switch and an on-off contact rod are installed; in the middle part of the shell, a core rod, a support seat, a disc spring and an adjusting nut are coaxially arranged in sequence from the pressure inlet to the electrical connector, the outer wall of the core rod and the corresponding inner wall of the shell are movably sealed, and a gap is left between the support seat and the disc spring and the corresponding inner wall of the shell respectively, and the outer wall of the adjusting nut is threadedly connected to the corresponding inner wall of the shell; an axial through hole is provided in the center of the adjusting nut, and the bottom end of the push rod assembly is fixed at the center of the inner end face of the support seat, and the head end of the push rod assembly passes through the axial through holes of the disc spring and the adjusting nut in sequence and corresponds to the outer rod end of the on-off contact rod; the pressure switch is small in size, safe and reliable, has a long service life, is easy to disassemble and assemble, and is also convenient for adjusting the on-off pressure value of the pressure switch.

[0004] However, the above structure has the problem that the signal output is unstable under high pressure, especially in high and low temperature environments, the signal output error is too large, and the pressure bearing capacity is insufficient. Utility Model Content

[0005] The purpose of the present utility model is to provide a novel single-contact pressure switch to solve the problems raised in the above background technology.

[0006] In order to solve the above technical problems, the present invention is achieved through the following technical solutions:

[0007] The utility model is a novel single-contact pressure switch, comprising a sleeve, a spring base is installed at the bottom of the inner cavity of the sleeve, a spring is installed at the upper end of the spring base, a contact is installed at the upper end of the spring, an isolation diaphragm is installed at the upper end of the contact, and a pressure transmission mechanism is installed at the upper end of the isolation diaphragm; the pressure transmission mechanism comprises a bushing, a base is installed at the inner cavity of the bushing, a push rod and a second coil are installed at the lower end of the base, a bouncing diaphragm is installed at the lower end of the second coil, a first coil is installed at the lower end of the bouncing diaphragm, and a micro switch mechanism is installed at the upper end of the base; the micro switch mechanism comprises a connecting block, a micro switch is installed at the lower end of the connecting block, a circuit is installed in the inner cavity of the connecting block, and a socket is installed at the upper end of the connecting block.

[0008] Furthermore, the interior of the sleeve is connected to a spring base by sliding, a spring is welded to the upper end of the spring base, the upper end of the spring is snap-connected to a contact, the top end of the sleeve inner cavity is snap-connected to an isolation diaphragm, and the contact is pressed against the isolation diaphragm.

[0009] Furthermore, the upper end of the isolation diaphragm presses against the push rod, the top end of the push rod is slidably connected to the base, and the base is snap-connected to the middle of the inner cavity of the bushing.

[0010] Furthermore, the lower end of the base is snap-connected to the second coil, the lower end of the second coil is snap-connected to the bouncing diaphragm, the lower end of the bouncing diaphragm is installed with the first coil, and the first coil is sleeved on the outside of the top rod.

[0011] Furthermore, the upper end of the bushing is connected to the connecting block via screws, the lower end of the connecting block is connected to the micro switch via screws, the lower end of the micro switch is pressed against the upper end of the push rod, and the circuit is installed on the upper end of the micro switch.

[0012] Furthermore, the upper end of the connection block is connected to the socket via screws, and the socket switch is controlled by a circuit.

[0013] The utility model has the following beneficial effects:

[0014] (1) The utility model separates the contacts and the push rod by setting an isolation diaphragm, so that the isolation diaphragm protects the contacts and prevents the push rod from rebounding and damaging the contacts, thereby ensuring the normal operation of the equipment and increasing the service life of the equipment.

[0015] (2) The utility model sets a micro switch and pushes the micro switch through the top rod. The micro switch controls the switch of the socket through the circuit at the top. The micro switch has a small contact gap and a quick-action mechanism, which can achieve high-precision control. The internal structure of the micro switch is compact, the contact gap is small, and the force can be transmitted quickly. It also has high durability and reliability, so that the signal output of the pressure switch remains stable under high pressure, and the signal output remains stable under special conditions.

[0016] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following is a brief introduction to the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0018] Figure 1 This is a schematic cross-sectional view of the structure of the utility model;

[0019] Figure 2 This is a cross-sectional diagram of the spring mechanism of the utility model;

[0020] Figure 3 This is a cross-sectional diagram of the pressure transmission mechanism of the utility model structure;

[0021] Figure 4 This is a cross-sectional diagram of the micro switch mechanism of the utility model;

[0022] Figure 5 This is a schematic diagram of the socket structure of the utility model

[0023] In the accompanying drawings, the components represented by the reference numerals are as follows:

[0024] In the figure: 1. Sleeve; 2. Spring base; 3. Spring; 4. Contact; 5. Isolation diaphragm; 6. Pressure transmission mechanism; 601. Bushing; 602. Base; 603. Push rod; 604. First coil; 605. Second coil; 606. Bounce diaphragm; 7. Micro switch mechanism; 701. Connecting block; 702. Micro switch; 703. Circuit; 8. Socket. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0026] See also Figure 1 - Figure 5As shown, the utility model is a novel single-contact pressure switch, comprising a sleeve 1, a spring base 2 is mounted at the bottom of the inner cavity of the sleeve 1, a spring 3 is mounted on the upper end of the spring base 2, a contact 4 is mounted on the upper end of the spring 3, an isolation diaphragm 5 is mounted on the upper end of the contact 4, and a pressure transmission mechanism 6 is mounted on the upper end of the isolation diaphragm 5; the pressure transmission mechanism 6 comprises a bushing 601, a base 602 is mounted in the inner cavity of the bushing 601, a push rod 603 and a second coil 605 are mounted at the lower end of the base 602, a bouncing diaphragm 606 is mounted at the lower end of the second coil 605, a first coil 604 is mounted at the lower end of the bouncing diaphragm 606, and a micro switch mechanism 7 is mounted at the upper end of the base 602; the micro switch mechanism 7 comprises a connecting block 701, a micro switch 702 is mounted at the lower end of the connecting block 701, a circuit 703 is mounted in the inner cavity of the connecting block 701, and a socket 8 is mounted at the upper end of the connecting block 701.

[0027] The interior of sleeve 1 slides onto a spring base 2, welded to the upper end of spring base 2. The upper end of spring 3 snaps into contact 4. The top of sleeve 1's inner cavity snaps into an isolation diaphragm 5, which rests against contact 4. The upper end of isolation diaphragm 5 presses against ejector pin 603, the top of which slides onto base 602. Base 602 snaps into the middle of the inner cavity of bushing 601.

[0028] The purpose of this arrangement is to separate the contact 4 and the ejector rod 603 through the isolation diaphragm 5, so that the isolation diaphragm 5 protects the contact 4 and prevents the ejector rod 603 from rebounding and damaging the contact 4, thereby ensuring the normal operation of the equipment and increasing the service life of the equipment.

[0029] The lower end of the base 602 is snap-connected to the second coil 605 , the lower end of the second coil 605 is snap-connected to the bouncing diaphragm 606 , the lower end of the bouncing diaphragm 606 is installed with the first coil 604 , and the first coil 604 is sleeved on the outside of the top rod 603 .

[0030] The upper end of bushing 601 is connected to connecting block 701 via screws, and the lower end of connecting block 701 is connected to micro switch 702 via screws. The lower end of micro switch 702 is pressed against the upper end of push rod 603, and circuit 703 is installed on the upper end of micro switch 702. The upper end of connecting block 701 is connected to socket 8 via screws, and socket 8 is controlled by circuit 703.

[0031] The purpose of this setting is to push the micro switch 702 through the top rod 603, and the micro switch 702 controls the switch of the socket 8 through the circuit 703 at the top. The micro switch 702 has a small contact spacing and a quick-action mechanism, which can achieve high-precision control. The internal structure of the micro switch 702 is compact, the contact gap is small, and the force can be transmitted quickly. It also has high durability and reliability, so that the signal output of the pressure switch remains stable under high pressure, and the signal output remains stable under special circumstances.

[0032] When in use, when pressure is transmitted from the through hole at the bottom end of the sleeve 1 to the spring base 2, the spring base 2 transmits the pressure to the spring 3, the spring 3 is compressed, thereby pushing the contact 4, and the contact 4 transmits the pressure to the top rod 603 through the isolation diaphragm 5. The first coil 604 on the top rod 603 is displaced, causing the bouncing diaphragm 606 to occur, thereby causing the second coil 605 at the upper end of the bouncing diaphragm 606 to be displaced, thereby pushing the micro switch 702, so that the micro switch 702 controls the switch of the socket 8 through the circuit 703.

[0033] The preferred embodiments of the present invention disclosed above are intended only to help illustrate the present invention. The preferred embodiments do not describe all details in detail, nor do they limit the present invention to the specific embodiments described. Obviously, many modifications and variations are possible based on the contents of this specification. These embodiments are selected and described in detail in this specification to better explain the principles and practical applications of the present invention, thereby enabling those skilled in the art to better understand and utilize the present invention. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A novel single-contact pressure switch, comprising a sleeve (1), characterized in that: A spring base (2) is installed at the bottom of the inner cavity of the sleeve (1), a spring (3) is installed at the upper end of the spring base (2), a contact (4) is installed at the upper end of the spring (3), an isolation diaphragm (5) is installed at the upper end of the contact (4), and a pressure transmission mechanism (6) is installed at the upper end of the isolation diaphragm (5); The pressure transmission mechanism (6) includes a bushing (601), a base (602) is installed in the inner cavity of the bushing (601), a top rod (603) and a second coil (605) are installed at the lower end of the base (602), a bouncing diaphragm (606) is installed at the lower end of the second coil (605), a first coil (604) is installed at the lower end of the bouncing diaphragm (606), and a micro switch mechanism (7) is installed at the upper end of the base (602); The micro switch mechanism (7) comprises a connecting block (701), a micro switch (702) is mounted on the lower end of the connecting block (701), a circuit (703) is mounted in the inner cavity of the connecting block (701), and a socket (8) is mounted on the upper end of the connecting block (701).

2. A novel single-contact pressure switch according to claim 1, characterized in that: The interior of the sleeve (1) is connected to the spring base (2) by sliding, the upper end of the spring base (2) is welded with a spring (3), the upper end of the spring (3) is snap-connected to the contact (4), the top end of the inner cavity of the sleeve (1) is snap-connected to the isolation diaphragm (5), and the contact (4) is pressed against the isolation diaphragm (5).

3. A novel single-contact pressure switch according to claim 1, characterized in that: The upper end of the isolation diaphragm (5) is against the push rod (603), the top end of the push rod (603) is slidably connected to the base (602), and the base (602) is snap-connected to the middle of the inner cavity of the bushing (601).

4. A novel single-contact pressure switch according to claim 1, characterized in that: The lower end of the base (602) is snap-connected to the second coil (605), the lower end of the second coil (605) is snap-connected to the bouncing diaphragm (606), the lower end of the bouncing diaphragm (606) is installed with the first coil (604), and the first coil (604) is sleeved on the outside of the top rod (603).

5. A novel single-contact pressure switch according to claim 1, characterized in that: The upper end of the bushing (601) is connected to the connecting block (701) via screws, and the lower end of the connecting block (701) is connected to the micro switch (702) via screws. The lower end of the micro switch (702) is pressed against the upper end of the push rod (603), and the circuit (703) is installed on the upper end of the micro switch (702).

6. A novel single-contact pressure switch according to claim 1, characterized in that: The upper end of the connecting block (701) is connected to the socket (8) via a screw, and the socket (8) is controlled to switch via the circuit (703).

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