Waterproof pressure switch shell

Abstract

The utility model discloses a waterproof pressure switch housing, and belongs to the technical field of pressure switches. Comprising a shell assembly, a waterproof assembly and a switch assembly, the shell assembly comprises a shell, a rear cover is arranged on the side wall of the shell, a connecting pipe is arranged below the shell, the waterproof assembly comprises a fixing frame arranged on the inner wall of the shell, a rubber pad is arranged below the fixing frame, a threaded pipe is arranged above the shell, and a pressing and screwing cover is arranged on the circumferential outer wall of the threaded pipe. The switch assembly comprises an elastic piece arranged below the fixing frame, a push rod is arranged on the inner wall of the fixing frame, an insertion piece is arranged on the side wall of the shell, a static contact is arranged below the insertion piece, and a movable contact is arranged above the static contact. According to the utility model, the threaded pipe is matched with the pressing and screwing cover to seal the connecting port, thereby realizing internal waterproof and external waterproof, and achieving a good waterproof effect. The elastic sheet pushes the push rod, and the push rod pushes the elastic reed, so that the movable contact is separated from the static contact, the circuit is disconnected, and the safety is higher.

Description

Technical Field

[0001] The utility model relates to the technical field of pressure switches, and more particularly to a waterproof pressure switch housing. Background Art

[0002] A pressure switch is a device that controls the on / off state of a circuit by sensing the pressure of a pressure source. It usually includes a shell, a switch seat and an inner cover are provided in the shell, the space between the switch seat and the inner cover serves as a switching chamber, and the space between the inner cover and the inner wall of the shell serves as a driving chamber. A moving contact and a static contact are provided in the switching chamber, and the moving contact and the static contact are respectively provided with an insert extending outside the shell. A resilient moving spring is provided between the moving contact and the insert. The moving spring resets the moving contact toward the static contact until the two are offset to form a circuit connection. The driving chamber is connected to the pressure source and a diaphragm and a disc spring are sequentially provided in a direction away from the switching chamber. The diaphragm deforms under the control of the pressure source and transmits pressure to the disc spring. When the disc spring is subjected to a pressure exceeding the rated pressure, it pushes the push rod linked between the disc spring and the moving contact to separate the moving contact and the static contact to form a circuit disconnection.

[0003] In the prior art, patent document CN108493049A provides a pressure switch for a water system and an assembly method thereof. The device disconnects the circuit by pushing a trigger plate through a push rod.

[0004] Although this device has many beneficial effects, it still has the following problems: the pressure switch insert is exposed to the outside, and the waterproof performance is poor, which needs to be improved; secondly, liquid can easily enter the interior of the switch, and the safety needs to be improved. In view of this, we propose a waterproof pressure switch housing. Utility Model Content

[0005] 1. Technical problems to be solved

[0006] The purpose of the present utility model is to provide a waterproof pressure switch housing to solve the problem of poor waterproof performance of the existing waterproof pressure switch housing in use and to improve the safety of the device as mentioned in the background art.

[0007] 2. Technical solution

[0008] A waterproof pressure switch housing, comprising a housing assembly, a waterproof assembly and a switch assembly;

[0009] in,

[0010] The housing assembly includes a housing, a rear cover is provided on the side wall of the housing, and a connecting pipe is provided below the housing;

[0011] The waterproof assembly includes a fixing frame arranged on the inner wall of the housing, a rubber pad is arranged below the fixing frame, a threaded tube is arranged above the housing, and a screw cap is arranged on the outer wall of the threaded tube;

[0012] The switch assembly includes a spring sheet arranged below the fixing frame, a push rod is arranged on the inner wall of the fixing frame, an insert is arranged on the side wall of the shell, a static contact is arranged below the insert, and a moving contact is arranged above the static contact.

[0013] Preferably, the side wall of the housing is provided with a sealing ring, and the side wall of the sealing ring is provided with bolts.

[0014] Preferably, a protrusion is provided on a side wall of the fixing frame, a connection port is provided on the upper portion of the shell, and a connection block is provided on a side wall of the connection port.

[0015] Preferably, a bracket is provided on the outer circumferential wall of the push rod, a support tube is provided above the bracket, and a base is provided on the side wall of the insert.

[0016] Preferably, a pushing block is provided above the rubber pad, and an elastic spring is provided on the side wall of the moving contact.

[0017] 3. Beneficial effects

[0018] Compared with the prior art, the advantages of the present invention are:

[0019] The utility model fixes the rubber pad by the fixing frame in conjunction with the convex block, isolates the water flow in the connecting pipe, and the threaded pipe cooperates with the press-screw cover to seal the connecting port, isolating water from the outside and preventing water from entering the connecting port, thereby achieving internal and external waterproofing and having a good waterproof effect;

[0020] Secondly, when the pressure in the connecting pipe is too high, the push block will push the spring piece, causing the spring piece to deform and push the push rod. Finally, the push rod pushes the elastic spring piece connecting the moving contact to separate the moving contact and the static contact, thereby disconnecting the circuit and improving safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0022] Figure 2 This is a detailed schematic diagram of the waterproof component of the utility model;

[0023] Figure 3 This is a detailed schematic diagram of the switch assembly of the present utility model;

[0024] Explanation of the numbers in the figure: 1. Housing assembly; 2. Waterproof assembly; 3. Switch assembly; 110. Housing; 120. Back cover; 130. Sealing ring; 140. Bolt; 150. Connecting pipe; 210. Fixing bracket; 220. Bump; 230. Rubber pad; 240. Threaded pipe; 250. Connecting port; 260. Connecting block; 270. Press-screw cover; 310. Spring piece; 320. Push rod 330. Bracket; 340. Support tube; 350. Rubber block; 360. Insert; 370. Base; 380. Static contact; 390. Moving contact; 391. Push block. DETAILED DESCRIPTION

[0025] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0026] In the description of the present invention, “plurality” means two or more, unless otherwise clearly defined.

[0027] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "provided with," "mounted / connected," and "connected" should be understood in a broad sense. For example, "connected" can mean a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be internal communication between two components. For those skilled in the art, the specific meanings of the above terms in this utility model can be understood according to the specific circumstances.

[0028] See also Figure 1-3 ,The utility model provides a technical solution:

[0029] A waterproof pressure switch housing, the housing assembly 1 includes a housing 110, a side wall of the housing 110 is bolted to a rear cover 120, and a connecting pipe 150 is installed below the housing 110;

[0030] The waterproof component 2 includes a fixing frame 210 arranged on the inner wall of the outer shell 110, a rubber pad 230 is installed below the fixing frame 210, a threaded tube 240 is threadedly connected to the upper part of the outer shell 110, and a screw-on cover 270 is threadedly connected to the outer wall of the threaded tube 240; the utility model fixes the rubber pad 230 by the fixing frame 210, and the screw-on cover 270 cooperates with the threaded tube 240 to form a seal, which has a good waterproof effect.

[0031] The switch assembly 3 includes a spring clip 310 mounted below the mounting bracket 210. A push rod 320 is slidably connected to the inner wall of the mounting bracket 210. An insert 360 is mounted on the side wall of the housing 110. A stationary contact 380 is welded below the insert 360, and a movable contact 390 is located above the stationary contact 380. In this utility model, the spring clip 310 pushes the push rod 320, which in turn pushes the elastic spring, separating the movable contact 390 from the stationary contact 380, thereby disconnecting the circuit and providing greater safety.

[0032] At the same time, in order to fix the back cover 120 , specifically, a sealing ring 130 is provided on the side wall of the housing 110 , and bolts 140 are installed on the side wall of the sealing ring 130 . The bolts 140 cooperate with the sealing ring 130 to fix the back cover 120 .

[0033] Furthermore, in order to fix the rubber pad 230, specifically, a protrusion 220 is provided on the side wall of the fixing frame 210, a connecting port 250 is installed above the shell 110, and a connecting block 260 is provided on the side wall of the connecting port 250. A groove is reserved inside the fixing frame 210 to cooperate with the protrusion 220 to fix the rubber pad 230.

[0034] It is worth noting that in order to fix the insert 360, specifically, the outer wall of the push rod 320 is sleeved with the bracket 330, the support tube 340 is welded above the bracket 330, and the side wall of the insert 360 is provided with a base 370, and the insert 360 is installed in the groove body of the base 370 for fixation.

[0035] It is worth noting that a push block 391 is provided above the sliding rubber pad 230 , and an elastic spring is provided on the side wall of the moving contact 390 .

[0036] Working principle: When in use, install the connecting pipe 150 on the water pipe, then use the sealing ring 130 and the bolt 140 to install the back cover 120 on the outer shell 110, fix the rubber pad 230 through the fixing frame 210 and the protrusion 220, and the threaded tube 240 cooperates with the press-screw cover 270 to cover the connecting port 250 and the connecting block 260. Fix the push rod 320 through the bracket 330, the support tube 340 and the rubber block 350. When the water pressure in the water pipe is too high, the push block 391 will be propped up, and the push block 391 will push the spring piece 310. After the spring piece 310 is deformed, it drives the push rod 320. Finally, the push rod 320 pushes the elastic spring, and the moving contact 390 and the static contact 380 are separated, so that the circuit is disconnected.

[0037] The above shows and describes the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely preferred examples of the present invention and are not intended to limit the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention, and such changes and improvements fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. A waterproof pressure switch housing, characterized in that: It comprises a housing component (1), a waterproof component (2) and a switch component (3); in, The housing assembly (1) comprises a housing (110), a rear cover (120) is arranged on a side wall of the housing (110), and a connecting pipe (150) is arranged below the housing (110); The waterproof component (2) comprises a fixing frame (210) arranged on the inner wall of the housing (110), a rubber pad (230) is arranged below the fixing frame (210), a threaded tube (240) is arranged above the housing (110), and a screw-on cover (270) is arranged on the circumferential outer wall of the threaded tube (240); The switch assembly (3) comprises a spring sheet (310) arranged below the fixing frame (210), a push rod (320) is arranged on the inner wall of the fixing frame (210), an insert sheet (360) is arranged on the side wall of the housing (110), a static contact (380) is arranged below the insert sheet (360), and a moving contact (390) is arranged above the static contact (380).

2. The waterproof pressure switch housing according to claim 1, characterized in that The side wall of the housing (110) is provided with a sealing ring (130), and the side wall of the sealing ring (130) is provided with a bolt (140).

3. The waterproof pressure switch housing according to claim 2, characterized in that The side wall of the fixing frame (210) is provided with a protrusion (220), the upper part of the housing (110) is provided with a connection port (250), and the side wall of the connection port (250) is provided with a connection block (260).

4. The waterproof pressure switch housing according to claim 3, characterized in that A bracket (330) is disposed on the circumferential outer wall of the push rod (320), a support tube (340) is disposed above the bracket (330), and a base (370) is disposed on the side wall of the insert (360).

5. The waterproof pressure switch housing according to claim 4, characterized in that A pushing block (391) is arranged above the rubber pad (230), and a rubber block (350) is arranged above the push rod (320).

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