A watertight switch

Abstract

The present invention provides a switch for working in a deep - water environment, which comprises a switch housing, a rotating rod, a large connecting rod, two small connecting rods, a rotating contact rod, contact clip A, contact clip B, a sealing O - ring and sealing silicone grease. There is a through - hole in the middle of the switch housing, and there are threads on the outer side of the switch housing. A small O - ring is installed on the rotating rod, and sealing silicone grease is applied on the outer side. The rotating rod is tightly inserted into the through - hole of the switch housing. It is characterized in that there is a flat - head depression at the top of the rotating rod, and the bottom of the rotating rod is fixedly connected to the large connecting rod. The bottom of the large connecting rod is connected to the rotating contact rod. The bottom of the switch housing is respectively connected to the two small connecting rods, and the two small connecting rods are respectively connected to contact clip A and contact clip B. The rotating contact rod and contact clips A and B are made of conductive metal. The rotating contact rod and contact clips A and B are located on the same horizontal plane and perform a horizontal rotational movement when the rotating rod rotates, so as to realize simultaneous connection or disconnection with contact clip A and contact clip B.

Description

Technical Field

[0001] The present invention relates to a switching device, specifically to a watertight switch for underwater operation, which is applicable to underwater equipment such as underwater vehicles. Using the invention (watertight switch), power can be turned on and off inside the equipment externally on the water surface or underwater, and it can also work in a deep - water environment, being very safe and reliable. Background Art

[0002] The existing waterproof switches on the market can only prevent water splash or rain, and are not completely watertight switches and cannot work when immersed in water.

[0003] Even if there are special switches that can work underwater, they can only work in very shallow water depths, such as a few meters underwater, and the switches are very bulky and troublesome to install and unload, and cannot meet the requirements of small, precise, and deep - water working equipment.

[0004] A patent application with the publication number CN201117520Y discloses an underwater switch, which includes a knob and a knob switch, as well as a watertight mounting base. The knob switch is fixedly connected to the watertight mounting base through an inner clamping plate and a switch fixing plate. Its disadvantages are that the installation operation of this switch is relatively complex. It is necessary to fix the inner clamping plate inside the equipment to fix the knob through an elastic retaining ring, and it is necessary to operate the tightening bolt inside the equipment. For relatively small underwater working equipment, there is a lack of operating space and the construction difficulty is relatively large. The knob used in the comparative document is convex. On the one hand, it may accidentally touch and cause the switch to turn on during transportation. On the other hand, when working underwater, the convex shape will affect the fluid shape of the underwater navigation equipment. Since the size of its knob switch is fixed, the size and length of the entire switch are restricted by its knob switch, and the adaptability is poor.

[0005] The watertight switch of the present invention, which is self - contained in a module, is simple and convenient to install, and can be adjusted in terms of size and voltage - bearing capacity according to the conditions of the required equipment and the use environment, with strong applicability and high safety. It meets the function of repeatedly supplying and cutting off power to underwater equipment during experimental debugging or actual work without the need to disassemble and assemble the equipment, greatly saving time and improving work efficiency. Summary of the Invention

[0006] 1. Object of the Invention

[0007] The present invention aims to overcome the above - mentioned deficiencies and provide a switch that is simple, reliable, easy to use, has low requirements for the installation environment, is convenient for later maintenance, and can work in a deep - water environment.

[0008] 2. Technical Solution

[0009] To achieve the above object, the present invention includes: a switch housing, a rotating rod, a large connecting rod, two small connecting rods, a rotating contact rod, a contact clip A, a contact clip B, a sealing O-ring, and sealing silicone grease. There is a through hole in the middle of the switch housing, and the outer side of the switch housing has threads. A small sealing O-ring is installed on the rotating rod, and sealing silicone grease is applied on the outer side, which is tightly inserted into the through hole of the switch housing. It is characterized in that there is a flat depression at the top of the rotating rod, the bottom is fixedly connected to the large connecting rod, the bottom of the large connecting rod is connected to the rotating contact rod, the bottom of the switch housing is respectively connected to the two small connecting rods, and the two small connecting rods are respectively connected to the contact clip A and the contact clip B. The rotating contact rod and the contact clips A and B are made of conductive metal, and the rotating contact rod and the contact clips A and B are located on the same horizontal plane and perform a horizontal rotational movement when the rotating rod rotates, so as to realize simultaneous connection or disconnection with the contact clips A and B.

[0010] Further, in order to ensure better adaptation between the rotating rod and the housing and prevent water-tight problems caused by movement in the vertical direction of the housing, the shape of the through hole in the middle of the switch housing is slightly wider at the upper part and slightly narrower at the lower part. The shape of the rotating rod is adapted to the through hole of the switch housing, the top is flush with the top of the switch housing, the bottom is flush with the bottom of the switch housing, and the bottom is fixedly connected to the large connecting rod. The width of the bottom of the large connecting rod is greater than the diameter of the through hole of the switch housing.

[0011] Further, for the convenience of installation, the outer shape of the switch housing is similar to an external hexagon screw, and a threaded rod is connected below the hexagonal shell cap. To ensure water tightness, a large sealing O-ring is installed on the lower surface of the hexagonal shell cap.

[0012] To extend the service life, the switch housing and the rotating rod are made of stainless steel material resistant to seawater corrosion, the large connecting rod and the two small connecting rods are made of plastic material for insulation, and the sealing O-ring is made of fluororubber material resistant to corrosion.

[0013] Further, the large connecting rod is screwed onto the rotating rod by a threaded fixing method to ensure that the rotating rod will not move out of the switch housing. The two small connecting rods are also screwed onto the switch housing in the same way.

[0014] Further, the rotating contact rod is adhesively fixed to the rotating rod by a tight fit and industrial AB glue. The contact clips A and B are also tightly fitted and then adhesively fixed to the two small connecting rods respectively with industrial AB glue. Finally, a large sealing O-ring is installed on the switch housing.

[0015] Further, in order to improve the switch contact effect, the opening of the contact clip is thin and elastic, so as to have a certain damping and be able to hold the rotating contact rod.

[0016] The underwater equipment housing only needs to have a small flat surface and corresponding threaded holes to install the watertight switch. During operation, the present invention is installed on the required equipment through threads. Two positive and negative wires are led out from the internal circuit of the equipment and connected to the contact clip A and the contact clip B respectively. When powering on, only need to turn the rotating rod to the ON position, and turn it to the OFF position when powering off. The working scenario is as Figure 1 shown.

[0017] Due to the use of the sealed O-ring sealing method, it can withstand a large water pressure and can ensure watertightness even at a depth of four or five hundred meters underwater. Moreover, the sealed O-ring has good damping, so that the switch will not rotate and deviate from its position due to equipment vibration when the rotating rod stops.

[0018] 3. Technical effects

[0019] The underwater switch adopting the above scheme can be assembled outside the underwater equipment. After assembly, the entire switch device forms an integral structure. Just screw it into the threaded hole of the equipment and complete the wiring to complete the installation, and the operation is very simple. Its bottom controls the switch by the way of the rotating contact rod contacting with the contact clip, and the width between the contact clips can be adjusted according to the diameter of the switch, with strong adaptability. Brief description of the drawings

[0020] Figure 1 is a schematic diagram of the working scenario and a partial enlarged view of the present invention;

[0021] Figure 2 is a schematic diagram of the effect of the present invention;

[0022] Figure 3 is a structural diagram and a sectional view of the present invention;

[0023] Figure 4 is a structural diagram, a sectional view and a schematic diagram of the switch housing in the present invention;

[0024] Figure 5 is a structural diagram and a schematic diagram of the rotating rod with a small sealed O-ring installed in the present invention;

[0025] Figure 6 is a structural diagram of the contact clip in the present invention;

[0026] Figure 7 is a schematic diagram of the installation positions of the rotating contact rod and the contact clips A and B;

[0027] Figure 8 is a schematic diagram when the present invention is powered on;

[0028] Figure 9 is a schematic diagram when the present invention is powered off;

[0029] Among them, 1 switch housing, 2 rotating rod, 3 large connecting rod, 4 small connecting rod, 5 rotating contact rod, 6 contact clip A, 7 contact clip B, 8 small sealed O-ring, 9 large sealed O-ring Detailed implementation mode

[0030] The present invention will be described in detail below in conjunction with the accompanying drawings and specific implementation modes.

[0031] The overall effect diagram of the present invention is as Figure 2 、 3 shown.

[0032] First step: Install two small sealing O-rings 8 on the rotating rod 2 and apply sealing silicone grease. As Figure 5 shown;

[0033] Second step: Insert the rotating rod 2 with the installed small sealing O-ring into the switch housing 1;

[0034] Third step: Tighten the large connecting rod 3 into the threaded hole of the rotating rod 2;

[0035] Fourth step: Tighten two small connecting rods 4 onto the two threaded holes of the switch housing 1 respectively;

[0036] Fifth step: Turn the rotating rod 2 to the OFF position so that the rotating contact rod 5 is parallel to the opening groove on the rotating rod 2. At this time, apply industrial AB glue to the rotating contact 5 and insert it into the rotating rod 2.

[0037] Sixth step: When the fifth step is completed, keep the position of the rotating rod 2 unchanged. Apply glue to the contact clip A6 and insert it into the small connecting rod 4. Then apply glue to the contact clip B7 and insert it into the other small connecting rod 4 in the direction of 180 degrees from the contact clip A6. Then wait for the glue to dry and adhere. The installation position is as Figure 7 shown;

[0038] Seventh step: Install the large sealing O-ring on the switch housing 1 and apply sealing silicone grease.

[0039] After the above installation process is completed, the entire switch module has been assembled and is ready for use.

Claims

1. A watertight switch, comprising a switch housing, a rotating rod, a large connecting rod, two small connecting rods, a rotating contact rod, contact clip A, contact clip B, a sealing O-ring and sealing silicone grease. There is a through hole in the middle of the switch housing, and there are threads on the outer side of the switch housing for installing the watertight switch on the required equipment. Two small sealing O-rings are installed on the rotating rod, and sealing silicone grease is applied on the outside and tightly inserted into the through hole of the switch housing. It is characterized in that there is a flat depression at the top of the rotating rod, and the bottom is fixedly connected to the large connecting rod. The bottom of the large connecting rod is connected to the rotating contact rod. The bottom of the switch housing is respectively connected to the two small connecting rods, and the two small connecting rods are respectively connected to contact clip A and contact clip B. The rotating contact rod, contact clip A and contact clip B are made of conductive metal. The rotating contact rod, contact clip A and contact clip B are in the same horizontal plane and perform a horizontal rotation movement when the rotating rod rotates. When the rotating rod reaches the ON position, the rotating contact rod is connected to contact clip A and contact clip B at the same time. When the rotating rod reaches the OFF position, the rotating contact rod is disconnected from contact clip A and contact clip B.

2. The watertight switch according to claim 1, characterized in that, The through hole in the middle of the switch housing is shaped such that the upper part is slightly thicker and the lower part is slightly thinner. The shape of the rotating rod is adapted to the through hole of the switch housing. The top is flush with the top of the switch housing, and the bottom is flush with the bottom of the switch housing. The bottom is fixedly connected to the large connecting rod, and the width of the bottom of the large connecting rod is greater than the diameter of the through hole of the switch housing.

3. The watertight switch according to claim 2, characterized in that, The outer shape of the switch housing is similar to an external hexagon screw. The hexagonal shell cap is connected to a threaded rod below, and a large sealing O-ring is installed on the lower surface of the hexagonal shell cap.

4. A watertight switch as claimed in claim 3, wherein, The switch housing and the rotating rod are made of stainless steel material resistant to seawater corrosion. The large connecting rod and the two small connecting rods are made of plastic material for insulation. The sealing O-ring is made of fluororubber material.

5. A watertight switch as claimed in claim 4, characterized in that, The large connecting rod is screwed onto the rotating rod by a threaded fixing method, and the two small connecting rods are also screwed onto the switch housing in the same way.

6. The watertight switch according to claim 5, characterized in that, The rotating contact rod is adhesively bonded to the large connecting rod by a tight fit and industrial AB glue. Contact clip A and contact clip B are also tightly fitted and then adhesively bonded to the two small connecting rods respectively with industrial AB glue.

7. A watertight switch as claimed in claim 6, characterized in that, The opening of the contact clip is relatively thin and elastic, with a certain damping, and can hold the rotating contact rod.

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