A hydrostatic pressure resistant button

Abstract

The application discloses a static water pressure resistant button, which is used for being installed into a setting hole of a cabin body, and cooperates with the cabin body to form a sealed cavity. The button comprises a setting key, which is in a columnar structure, has a first diameter expanding part at a front end, and has a second diameter expanding part at a rear end. A front end face of the first diameter expanding part is a circular arc curved surface. The button further comprises a locking ring, which comprises a cylindrical section with a smooth surface. The cylindrical section has a diameter expanding limiting part at a tail end. The locking ring is provided with a through hole in an axial direction. The button further comprises a sealing cap, which is an elastic sealing cap. The sealing cap is in a multi-step cylindrical tube structure. A limiting clamping groove, which is adapted to the setting hole of the cabin body, is annularly arranged on an outer circumference of the sealing cap. The static water pressure resistant button is installed into the setting hole of the sealed cabin body, and cooperates with the cabin body to form the sealed cavity. The static water pressure resistant button can bear a static water pressure of at least 0.2 MPa. The button has simple structure, high reliability, low cost, and is suitable for batch production.

Description

Technical field:

[0001] The invention relates to a waterproof button, in particular to a hydrostatic pressure resistant button. Background technology:

[0002] Sonar buoys, a primary aerial submarine search and rescue equipment, require preset operating parameters using a setup button on the surface electronics compartment before airdrop. Once airdropped, the electronics compartment floats on the sea surface, leaving the setup button in direct contact with the water. Therefore, a button was needed that could easily set the buoy's operating parameters while also providing a seal to prevent water or moisture from entering the sealed compartment. During operation, in adverse sea conditions, the electronics compartment can rise and fall with the waves and submerge underwater, requiring it to withstand a certain amount of hydrostatic pressure. Consequently, the setup button must withstand a certain amount of fluid pressure. Summary of the invention:

[0003] The technical problem to be solved by the present invention is to provide a hydrostatic pressure-resistant button for electronic components in a sealed cabin. The button is installed in the setting hole of the sealed cabin and together with the cabin forms a sealed cavity. It can withstand a hydrostatic pressure of at least 0.2 MPa. It has a simple structure, high reliability, low cost, and is suitable for mass production.

[0004] The technical solution of the present invention is to provide a hydrostatic pressure resistant button, which is used to be installed in the setting hole of the cabin and together with the cabin form a sealed cavity. The button includes

[0005] A setting key, wherein the setting key is a columnar structure, a front end of which has a first diameter-enlarging portion, a rear end of which has a second diameter-enlarging portion, and a front end surface of the first diameter-enlarging portion is an arc curved surface;

[0006] A locking ring, comprising a smooth cylindrical section with an enlarged diameter limit portion at the rear end of the cylindrical section, and a through hole provided in the axial direction of the locking ring;

[0007] A sealing cap, which is an elastic sealing cap and has a multi-step cylindrical structure, with a closed front end and an open rear end. A limiting groove adapted to the setting hole of the cabin is provided on the outer circumference of the sealing cap, and a boss is provided in the inner cavity of the sealing cap;

[0008] and a return spring, wherein the return spring is a cylindrical helical compression spring;

[0009] The cylindrical segment is inserted into the inner cavity of the sealing cap, and the front end face of the limiting portion at its tail end abuts against the end face of the open end of the sealing cap. The outer circumference of the cylindrical segment is engaged with the boss. The first expanded diameter portion passes through the through hole of the locking ring and abuts against the closed end of the sealing cap. The return spring is sleeved on the outside of the setting key, with its front end abutting against the limiting portion and its rear end abutting against the second expanded diameter portion. The sealing cap is forced to deform radially by the compression between the locking ring and the cabin, achieving a seal between the button and the cabin. At the same time, the top of the sealing cap is deformed to contact the electronic components in the cabin, achieving the transmission of the pressing force. In other words, while achieving sealing, manually pressing the setting key forces the top of the sealing cap to bulge and contact the electronic components in the cabin, achieving the setting of the electronic function.

[0010] Preferably, the second enlarged diameter portion is in the shape of a disk. The human-computer interaction portion is a disk with a larger diameter, which is convenient for fingers to apply force.

[0011] Preferably, the locking ring is provided with expansion cracks along the busbar.

[0012] Preferably, the cross section of the through hole of the locking ring is square.

[0013] Preferably, the inner diameter of the through hole of the locking ring is slightly smaller than the outer diameter of the first expanded diameter portion.

[0014] Preferably, a frustum flange is integrally formed at the front end of the locking ring, and the outer diameter of the front end of the frustum flange is smaller than the outer diameter of the rear end thereof.

[0015] Preferably, the reset spring is a pre-compressed reset spring, so that when the button is assembled, the reset spring has a certain initial deformation, generates a certain pre-tightening force, and prevents the setting key from moving, thereby avoiding accidental triggering.

[0016] Preferably, the button can withstand a hydrostatic pressure of at least 0.2 MPa.

[0017] Preferably, the sealing cap is made of elastic rubber material.

[0018] Furthermore, the limiting portion is a planar flange.

[0019] Compared with the prior art, the present invention has the following advantages after adopting the above structure: fluid sealing is achieved by means of the elastic deformation of the sealing cap, and the electronic component is triggered by the displacement transmission force generated by the deformation; the setting key is reset by means of the elastic force of the reset spring, which is convenient for pressing the setting key for a long time; by presetting the preload force of the reset spring, it is prevented from being accidentally triggered by non-human operations such as fluid pressure. The hydrostatic pressure-resistant button can withstand a hydrostatic pressure of at least 0.2 MPa, has a simple structure, high reliability, low cost, and is suitable for mass production. Description of the drawings:

[0020] Figure 1 It is a cross-sectional schematic diagram of the present invention.

[0021] Figure 2 It is an assembly diagram of the present invention.

[0022] Among them, 1. setting key; 2. return spring; 3. locking ring; 4. sealing cap; 5. cabin body. Specific implementation method:

[0023] The present invention will be further described below with reference to the accompanying drawings and specific embodiments:

[0024] like Figure 1 and 2 As shown, the hydrostatic pressure resistant button of this embodiment includes a setting key 1, a reset spring 2, a locking ring 3 and a sealing cap 4. The button is installed in the setting hole of the sealing cabin 5 (partially) and together with the cabin forms a sealed cavity.

[0025] The setting key 1 has a multi-segment cylindrical structure. The last segment is an ergonomically shaped disc, forming the second expanded diameter portion, facilitating prolonged finger pressure. The middle segment is a smooth cylinder. The front segment comprises a first expanded diameter portion with a curved arc surface. This first expanded diameter portion serves as a position limiter and contacts the top of the inner cavity of the sealing cap 4. Manually pressing the setting key 1 forces the top protrusion of the sealing cap 4 to deform, contacting the electronic components within the chamber, enabling electronic function settings. The setting key can be integrally molded from engineering plastic.

[0026] The sealing cap 4 is made of elastic rubber material and has a multi-step cylindrical structure. Its front end is a closed end and its rear end is an open end. A limit slot is provided on the outer circumference of the sealing cap 4 that is adapted to the setting hole of the cabin 5. The limit slot is stuck on the cabin 5 to limit the movement of the sealing cap 4. After assembly, the front end of the sealing cap is close to the electronic component in the cabin, and the sealing cap contacts the electronic component through the deformation of the convex part, thereby realizing the transmission of pressing force; a boss is provided on the inner cavity ring of the sealing cap 4, and the boss is stuck on the outer circumference of the locking ring 3. Through the extrusion between the locking ring 3 and the cabin 5, the sealing cap 4 is forced to deform radially to realize the sealing between the button and the cabin 5. At the same time, the deformation of the top of the sealing cap 4 contacts the electronic component in the cabin 5 to realize the transmission of force.

[0027] The locking ring 3 is integrally formed, with its outer contour divided into three sections. The middle section is a cylindrical section with an expanded stopper at the end. This stopper adopts a flat flange structure and mates with the end face of the open end of the sealing cap 4. The front section is a frustum flange with a certain slope. The outer diameter of the front end of the frustum flange is smaller than that of the rear end, which facilitates assembly. An expansion crack is also provided along the generatrix of the locking ring 3 to facilitate expansion and deformation during installation of the key 1. The inside of the locking ring 3 is an axially arranged square through-hole. The inner diameter of the through-hole is slightly smaller than the outer diameter of the first expanded section for key 1. This provides a positioning function when the first expanded section passes through the through-hole of the locking ring and contacts the closed end of the sealing cap.

[0028] The return spring 2 is a cylindrical helical compression spring, which is assembled between the setting key 1 and the locking ring 3. The front end of the return spring 2 abuts against the limit part at the tail end of the locking ring, and the rear end of the return spring 2 abuts against the second expanded diameter part of the setting key 1. When the button is assembled, the return spring 2 preferably has a certain initial deformation, thereby generating a certain pre-tightening force to prevent the setting key 1 from moving and prevent accidental triggering.

[0029] The hydrostatic pressure-resistant button of the present invention achieves fluid sealing by means of the elastic deformation of the sealing cap 4, and at the same time triggers the electronic component through the displacement transmission force generated by the deformation; the setting key 1 is reset by means of the elastic force of the reset spring 2, which facilitates continuous pressing of the setting key 1; the pre-tightening force of the preset reset spring 2 prevents the electronic component from being accidentally triggered by non-human factors such as fluid pressure; the hydrostatic pressure-resistant button provided by the present invention can withstand a hydrostatic pressure of at least 0.2 MPa.

Claims

1. A hydrostatic pressure resistant button, which is used to be installed in a setting hole of a cabin and together with the cabin forms a sealed cavity, characterized by: The button includes A setting key, wherein the setting key is a columnar structure, a front end of which has a first diameter-enlarging portion, a rear end of which has a second diameter-enlarging portion, and a front end surface of the first diameter-enlarging portion is an arc curved surface; A locking ring, comprising a cylindrical section, a tail end of which is provided with a limit portion having an expanded diameter, and a through hole provided in the axial direction of the locking ring; A sealing cap, which is an elastic sealing cap and has a multi-step cylindrical structure, with a closed front end and an open rear end. A limiting groove adapted to the setting hole of the cabin is provided on the outer circumference of the sealing cap, and a boss is provided in the inner cavity of the sealing cap; and a return spring, the return spring being a cylindrical helical compression spring, the return spring being sleeved on the outside of the setting key, with its front end abutting against the limiting portion and its rear end abutting against the second diameter-enlarging portion; In which, the cylindrical section is inserted into the inner cavity of the sealing cap and the front end face of the limiting part at its tail end is abutted against the end face of the open end of the sealing cap, the outer peripheral surface of the cylindrical section is snap-fitted with the boss, the first expanded diameter part passes through the through hole of the locking ring and abuts against the closed end of the sealing cap, and when the setting key is pressed, the top of the sealing cap can be raised and contact the electronic components in the cabin to realize the electronic function setting.

2. The hydrostatic pressure resistant button according to claim 1, characterized in that: The second enlarged diameter portion is in a circular pancake shape.

3. The hydrostatic pressure resistant button according to claim 1, characterized in that: The locking ring is provided with expansion cracks along the busbar.

4. The hydrostatic pressure resistant button according to claim 1, characterized in that: The cross section of the through hole of the locking ring is square.

5. The hydrostatic pressure resistant button according to claim 4, characterized in that: The inner diameter of the through hole of the locking ring is slightly smaller than the outer diameter of the first enlarged diameter portion.

6. The hydrostatic pressure resistant button according to claim 1, characterized in that: The front end of the locking ring is integrally formed with a frustum flange, and the outer diameter of the front end of the frustum flange is smaller than the outer diameter of the rear end thereof.

7. The hydrostatic pressure resistant button according to claim 1, characterized in that: The return spring is a pre-compressed return spring.

8. The hydrostatic pressure resistant button according to claim 1, characterized in that: The button can withstand a hydrostatic pressure of at least 0.2 MPa.

9. The hydrostatic pressure resistant button according to claim 1, characterized in that: The sealing cap is made of elastic rubber material.

10. The hydrostatic pressure resistant button according to claim 1, characterized in that: The limiting portion is a plane flange.

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