Novel pressure switch for controlling operation of household water dispenser

Abstract

The utility model discloses a novel pressure switch for controlling the operation of a household water dispenser in the technical field of pressure switches, which comprises a protective cover, an end cover and a pin, a water inlet end is arranged below the end cover, an inductor is arranged at the end part of the end cover corresponding to the protective cover, the inductor is arranged right above the water inlet end, a trigger element is arranged above the inductor, and the pin is connected with the trigger element. The triggering element comprises a supporting frame, an electric appliance element is fixedly installed in the middle of the supporting frame, the corresponding position of the electric appliance element is connected with the pin through a wire, an elastic piece is arranged below the electric appliance element, a first contact protruding point is arranged on the elastic piece, and a second contact protruding point electrically connected with the first contact protruding point in a contact mode is arranged on the electric appliance element. And a sealing assembly is arranged above the triggering element. According to the scheme, the connection sealing performance of the cable plug and the pressure switch can be improved, the waterproof effect is good, the plugging stability of the cable plug can be improved, and a certain anti-falling effect is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of pressure switches, in particular to a novel pressure switch for controlling the operation of a household water dispenser. Background Art

[0002] The pressure switch is used in central air conditioners, water pumps, wall-mounted boilers, heat pumps, hydraulic presses, ice machines, water dispensers and other machines that require pressure control and protection. It uses high-precision, high-stability pressure sensors and transmission circuits, and then uses dedicated CPU modular signal processing technology to achieve the detection, display, alarm and control signal output of medium pressure signals. The elastic elements used in the pressure switch include single-turn spring tubes, diaphragms, diaphragm boxes and bellows.

[0003] When the pressure switch is in use, it needs to be connected to the external power supply through a cable. However, in actual use, the connection between the pressure switch and the cable connector is simply connected by plugging and unplugging, which makes it easy for external liquids and water vapor to enter from the connection between the cable connector and the pressure switch terminal, which is not conducive to the normal use of the pressure switch and poses a great threat to the safety of use. In response to this, we propose a new type of pressure switch to control the operation of household water dispensers. Utility Model Content

[0004] The purpose of this section is to summarize some aspects of the embodiments of the utility model and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the abstract of the specification and the name of the utility model to avoid blurring the purpose of this section, the abstract of the specification and the name of the utility model, and such simplifications or omissions cannot be used to limit the scope of the utility model.

[0005] Therefore, the purpose of the utility model is to provide a new type of pressure switch for controlling the operation of a household water dispenser, which can solve the problem that when the existing pressure switch is in use, external liquids, water vapor, etc. can easily enter from the connection between the cable connector and the pressure switch terminal, which is not conducive to the normal use of the pressure switch.

[0006] In order to solve the above technical problems, the utility model provides a new type of pressure switch for controlling the operation of a household water dispenser, which adopts the following technical scheme: it includes a protective cover, an end cover and a cable plug, the cable plug is plugged into the upper end of the protective cover, the protective cover and the end cover are connected by bolts, a water inlet end is provided below the end cover, a sensor is provided at the end of the end cover corresponding to the protective cover, the sensor is provided just above the water inlet end, a trigger element is provided above the sensor, the trigger element includes a support frame, an electrical component is fixedly installed in the middle of the support frame, the corresponding position of the electrical component is connected to the cable plug through a wire, an elastic member is provided below the electrical component, a contact bump 1 is provided on the elastic member, a contact bump 2 electrically connected to the contact bump 1 is provided on the electrical component, a sealing component is provided above the trigger element, and the sealing component can provide sealing protection for the cable plug.

[0007] By adopting the above technical solution, this solution arranges a sealing assembly on the inner side of the pressure switch. When water remains on the cable plug, the water will flow into the filling material along the inclined guide piece 1 and guide piece 2, and then be absorbed by the filling material. At the same time, the boss abuts against the guide piece 1 and guide piece 2, which can also prevent the cable plug from falling off, further improving the stability and safety of the pressure switch.

[0008] Optionally, the sealing assembly includes a sealing cap, which is fixed to the protective cover by bolts, and the sealing cap is provided with guide plate 1, guide plate 2 and filling material inside, the cable plug is arranged between guide plate 1 and guide plate 2, and guide plate 1 and guide plate 2 are arranged at an angle less than degrees, and the filling material is filled in the cavity formed by guide plate 1, guide plate 2 and the sealing cap.

[0009] By adopting the above technical solution, in this solution, after water remains on the cable plug, the water will flow into the filling material along the inclined guide piece 1 and guide piece 2, and then be absorbed by the filling material; wherein, an inclined surface facing the position of the filling material is provided above the guide piece 1 and guide piece 2, and the inclined surface can be more convenient for water repellency.

[0010] Optionally, an inwardly protruding boss is provided on the inner side of the sealing cap, and the boss is provided between the first guide piece and the second guide piece.

[0011] By adopting the above technical solution, this solution makes the upper ends of guide piece one and guide piece two more closely attached to the cross-section of the cable plug through the limiting effect of the boss, making it easy to evacuate moisture on the cable plug to the guide piece, and by clamping the guide piece one and guide piece two, the outward movement of the cable plug can be limited, thereby preventing the cable plug from falling off.

[0012] Optionally, a conical retaining ring is provided on the surface of the end cover opposite to the protective cover, and the conical retaining ring is plugged into the protective cover.

[0013] By adopting the above technical solution, the present solution can improve the contact sealing performance between the end cover and the protective cover through the conical retaining ring, and further prevent moisture from entering the interior of the protective cover.

[0014] Optionally, a sealing ring is provided between the conical retaining ring and the protective cover, and the sealing ring is provided on the outside of the sensor.

[0015] By adopting the above technical solution, the sealing ring is made of flexible rubber material. As the bolts used to connect the end cover and the protective cover are screwed in, the sealing ring can be squeezed, thereby improving the connection sealing performance between the end cover and the protective cover through the sealing ring.

[0016] Optionally, the contact bump 1 and the contact bump 2 are electrically connected in series with two adjacent cable plugs.

[0017] By adopting the above technical solution, the present solution can change the on-off state of the switch element by controlling whether the contact bump 1 and the contact bump 2 are in contact, thereby achieving the purpose of controlling the measured pressure.

[0018] Optionally, the height of the boss is less than 1 / 2 of the height of the guide piece 1 and the guide piece 2, and the cable plug passes through the boss.

[0019] By adopting the above technical solution, the present solution sets the boss to be smaller than 1 / 2 of the height of guide piece 1 and guide piece 2, so that the upper end portions of guide piece 1 and guide piece 2 can move inward at the same time due to the pushing force of the boss, thereby being in close contact with the cable plug.

[0020] Optionally, the sensor contacts an elastic member, and the elastic member is in a "V" shape.

[0021] By adopting the above technical solution, in this solution, when the elastic member is in the initial state, the contact bump 1 and the contact bump 2 can be made not to contact each other, and after being driven by an external force, the elastic member is deformed so that the contact bump 1 and the contact bump 2 are in contact, and after the external force is cancelled, the elastic member is reset, that is, the initial state is restored.

[0022] In summary, the present invention has at least one of the following beneficial effects:

[0023] This new type of pressure switch for controlling the operation of a household water dispenser has a sealing component arranged on the inner side of the pressure switch. When water remains on the cable plug, the water will flow into the filling material along the inclined guide pieces 1 and 2 and then be absorbed by the filling material, thereby effectively preventing the residual moisture at the cable plug from entering the protective cover and affecting the normal use of the component. At the same time, the boss abuts against the guide pieces 1 and 2, which can also prevent the cable plug from falling off, further improving the stability and safety of the pressure switch. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for describing the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0025] Figure 1 It is a cross-sectional schematic diagram of the utility model;

[0026] Figure 2 For the utility model Figure 1 An enlarged schematic diagram of location N;

[0027] Figure 3 For the utility model Figure 1 An enlarged schematic diagram of M;

[0028] Figure 4 This is a schematic diagram of the sealing cap structure of the utility model;

[0029] Figure 5 This is a schematic diagram of the end cover structure of the utility model;

[0030] Figure 6 This is a schematic diagram of the support frame structure of the utility model.

[0031] Explanation of the reference numerals: 1. Protective cover; 2. Sensor; 3. Water inlet end; 4. End cover; 5. Cable plug; 6. Sealing assembly; 61. Sealing cap; 62. Guide plate one; 63. Filling material; 64. Guide plate two; 65. Boss; 7. Conical retaining ring; 8. Sealing ring; 9. Trigger element; 91. Support frame; 92. Electrical component; 93. Elastic member; 94. Contact bump one; 95. Contact bump two. DETAILED DESCRIPTION

[0032] The following is combined with Figure 1-6 The utility model is described in further detail.

[0033] Embodiment 1, refer to Figure 1-3In order to solve the problem that external liquids, water vapor, etc. easily enter the connection between the cable connector and the pressure switch terminal when the existing pressure switch is in use, which is not conducive to the normal use of the pressure switch, the utility model discloses a new pressure switch for controlling the operation of a household water dispenser, including a protective cover 1, an end cover 4 and a cable plug 5. The cable plug 5 is plugged into the upper end of the protective cover 1. The protective cover 1 and the end cover 4 are connected by bolts, wherein the protective cover 1 and the end cover 4 are both made of high-temperature resistant insulating plastic. A water inlet 3 is provided below the end cover 4. When the pressure switch is used on the water dispenser, the water inlet 3 can facilitate the inflow of water, and the corresponding sensing component is triggered by the pressure of the incoming water.

[0034] See also Figure 1 and Figure 3 , wherein a conical retaining ring 7 is provided on the opposite surface of the end cover 4 and the protective cover 1, and the conical retaining ring 7 is plugged into the protective cover 1. A sealing ring 8 is provided between the conical retaining ring 7 and the protective cover 1, and the sealing ring 8 is made of flexible rubber. During the connection process between the end cover 4 and the protective cover 1, as the connecting bolts are continuously screwed in, the sealing ring 8 can be squeezed, and then the sealing ring 8 can improve the connection sealing performance between the end cover 4 and the protective cover 1.

[0035] Furthermore, a sensor 2 is provided at the end of the end cover 4 corresponding to the protective cover 1, a trigger element 9 is provided above the sensor 2, and a sealing ring 8 is provided outside the sensor 2. The sensor 2 is provided just above the water inlet end 3. After water enters the water inlet end 3, the pressure in the system is higher than the rated safety pressure. At this time, the disc in the sensor 2 moves instantaneously, thereby providing a triggering force for the trigger element 9.

[0036] Specifically, the trigger element 9 includes a support frame 91, which is in a U shape. The support frame 91 can support the components and facilitate the installation of the components. An electrical component 92 is fixedly installed in the middle of the support frame 91. The corresponding position of the electrical component 92 is connected to the cable plug 5 through a wire. An elastic member 93 is provided below the electrical component 92. The sensor 2 contacts the elastic member 93, and the elastic member 93 is in a "V" shape.

[0037] Furthermore, a contact bump 1 94 is provided on the elastic member 93, and a contact bump 2 95 electrically connected to the contact bump 1 94 is provided on the electrical component 92. The contact bump 1 94 and the contact bump 2 95 are electrically connected in series with two adjacent cable plugs 5. After water enters the water inlet 3, when the pressure in the system is higher than the rated safety pressure, the disc in the sensor 2 moves instantly, which can push the elastic member 93 to move upward, thereby making the contact bump 1 94 and the contact bump 2 95 contact, so that the series circuit of the two cable plugs 5 is connected; similarly, when the pressure in the system is lower than the rated safety pressure, the contact bump 1 94 and the contact bump 2 95 will not contact, and thus the circuit will not be connected; by changing the on-off state of the switch element, the purpose of controlling the measured pressure is achieved.

[0038] See also Figure 1 , Figure 2 and Figure 4 , wherein a sealing assembly 6 is provided above the trigger element 9, and the sealing assembly 6 can provide sealing protection for the cable plug 5. The sealing assembly 6 includes a sealing cap 61, which is fixed to the protective cover 1 by bolts, and a guide piece 1 62, a guide piece 2 64 and a filling material 63 are provided inside the sealing cap 61, and the cable plug 5 is provided between the guide piece 1 62 and the guide piece 2 64, and the guide piece 1 62 and the guide piece 2 64 are provided at an angle less than 90 degrees, and the filling material 63 is filled in the cavity formed by the guide piece 1 62, the guide piece 2 64 and the sealing cap 61. Among them, the filling material 63 is a highly absorbent resin, which can absorb water. An inwardly protruding boss 65 is provided on the inner side of the sealing cap 61, and the boss 65 is provided between the guide piece 1 62 and the guide piece 2 64. The height of the boss 65 is less than 1 / 2 of the height of the guide piece 1 62 and the guide piece 2 64, and the cable plug 5 passes through the boss 65. After the entire sealing assembly 6 is fixed inside the protective cover 1, at this time, the guide piece 1 62 and the guide piece 2 64 are in contact with the cable plug 5, and the upper end of the guide piece 1 62 and the guide piece 2 64 is more closely connected to the cross section of the cable plug 5 through the limiting effect of the boss 65. After the residual water on the cable plug 5, the water will flow into the filling material 63 along with the inclined guide piece 1 62 and the guide piece 2 64, and then be absorbed by the filling material 63. It is worth mentioning that, among them, the guide piece 1 62 and the guide piece 2 64 are both provided with an inclined surface toward the position of the filling material 63, and the inclined surface can be more convenient for water drainage. At the same time, the guide piece 1 62 and the guide piece 2 64 can also prevent the cable plug 5 from falling off, further improving the stability of the internal components.

[0039] The specific working principle is: this new type of pressure switch for controlling the operation of a household water dispenser installs and fixes the protective cover 1 and the end cover 4, and then connects one end of the cable plug 5 to an external power supply. At this time, the sealing component 6 arranged inside the protective cover 1 can seal the cable plug 5, effectively preventing the residual moisture at the cable plug 5 from entering the protective cover 1, thereby affecting the normal use of the components; water enters through the water inlet end 3, and when the pressure in the system is higher than the rated safety pressure, the disc in the sensor 2 moves instantaneously, which can push the elastic member 93 to move upward, thereby making the contact protrusion 1 94 and the contact protrusion 2 95 contact, thereby connecting the series circuit of the two cable plugs 5; similarly, when the pressure in the system is lower than the rated safety pressure, the contact protrusion 1 94 and the contact protrusion 2 95 will not contact, thereby not connecting the circuit; by changing the on-off state of the switch element, the purpose of controlling the measured pressure is achieved.

[0040] The above are all preferred embodiments of the present utility model, and are not intended to limit the protection scope of the present utility model. Therefore, any equivalent changes made based on the structure, shape, and principle of the present utility model should be included in the protection scope of the present utility model.

Claims

1. A novel pressure switch for controlling the operation of a household water dispenser, comprising a protective cover (1), an end cover (4) and a cable plug (5), wherein the cable plug (5) is plugged into the upper end of the protective cover (1), the protective cover (1) and the end cover (4) are connected by bolts, and a water inlet end (3) is provided below the end cover (4), characterized in that: A sensor (2) is provided at the end of the end cover (4) corresponding to the protective cover (1), the sensor (2) being arranged just above the water inlet end (3), a trigger element (9) being provided above the sensor (2), the trigger element (9) comprising a support frame (91), an electrical component (92) being fixedly mounted in the middle of the support frame (91), a corresponding position of the electrical component (92) being connected to the cable plug (5) via a wire, an elastic member (93) being provided below the electrical component (92), a contact bump 1 (94) being provided on the elastic member (93), a contact bump 2 (95) being electrically connected to the contact bump 1 (94) being provided on the electrical component (92), and a sealing component (6) being provided above the trigger element (9), the sealing component (6) being capable of sealing and protecting the cable plug (5).

2. A new type of pressure switch for controlling the operation of a household water dispenser according to claim 1, characterized in that: The sealing assembly (6) comprises a sealing cap (61), the sealing cap (61) being fixed to the protective cover (1) by means of bolts, the sealing cap (61) being provided with a first guide piece (62), a second guide piece (64) and a filling material (63) inside, the cable plug (5) being arranged between the first guide piece (62) and the second guide piece (64), the first guide piece (62) and the second guide piece (64) being arranged at an angle less than 90 degrees, and the filling material (63) being filled in a cavity formed by the first guide piece (62), the second guide piece (64) and the sealing cap (61).

3. A new type of pressure switch for controlling the operation of a household water dispenser according to claim 2, characterized in that: The inner side of the sealing cap (61) is provided with a boss (65) protruding inwards, and the boss (65) is arranged between the first guide piece (62) and the second guide piece (64).

4. A new type of pressure switch for controlling the operation of a household water dispenser according to claim 1, characterized in that: A conical retaining ring (7) is provided on the surface of the end cover (4) opposite to the protective cover (1), and the conical retaining ring (7) is plugged into the protective cover (1).

5. A new type of pressure switch for controlling the operation of a household water dispenser according to claim 4, characterized in that: A sealing ring (8) is provided between the conical retaining ring (7) and the protective cover (1), and the sealing ring (8) is provided on the outside of the sensor (2).

6. A new type of pressure switch for controlling the operation of a household water dispenser according to claim 1, characterized in that: The contact bump one (94), the contact bump two (95) and the two adjacent cable plugs (5) are electrically connected in series.

7. A new type of pressure switch for controlling the operation of a household water dispenser according to claim 3, characterized in that: The height of the boss (65) is less than half the height of the guide piece 1 (62) and the guide piece 2 (64), and the cable plug (5) passes through the boss (65).

8. A new type of pressure switch for controlling the operation of a household water dispenser according to claim 1, characterized in that: The sensor (2) is in contact with the elastic member (93), and the elastic member (93) is in a "V" shape.

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