A low-noise gas circuit controller

Abstract

The utility model provides a low-noise gas circuit controller, comprising: a resistance part is added inside the shell of the gas circuit controller, which is used to abut against a memory metal wire, thereby changing the vibration frequency of the memory metal wire. When the memory metal wire is connected to a power source and vibrates, it will abut against the resistance part, thereby changing the vibration frequency; at this time, the difference between the actual vibration frequency and its natural frequency becomes larger, thereby avoiding resonance. Since the resistance part abuts against the memory metal wire, the amplitude of the memory metal wire can also be limited, thereby reducing the loudness of the noise.

Description

Technical Field

[0001] The utility model generally relates to the technical field of air circuit controllers, and in particular to a low-noise air circuit controller structure. Background Art

[0002] The existing car seats are equipped with massage devices. When the massage devices are working, the air circuit controller needs to be connected to the air pump to blow air into each air bag. The air bag is repeatedly inflated and deflated in a short time to achieve a vibration massage effect.

[0003] The gas circuit controller has multiple terminals inside, and a memory wire is fixedly connected to the terminal. The memory wire is wound around the valve core inside the gas circuit controller. When not working, the memory wire is in a relaxed state; when working, the memory wire will be energized, and then quickly contract and tighten, which will generate noise and affect the user experience. Utility Model Content

[0004] In view of the above-mentioned defects or deficiencies in the prior art, it is desired to provide a low-noise air path controller.

[0005] The utility model provides a low-noise gas circuit controller, which is used to control the connection or blocking of the gas circuit. The gas circuit is used to connect the common gas components, including:

[0006] A housing, wherein the housing has an installation space inside, a circuit board is arranged in the installation space; the circuit board has a control circuit; and the housing has a contact portion;

[0007] A switch assembly, the switch assembly is installed in the installation space and is connected to the gas path; the switch assembly has an open state and a closed state, and is used to control the connection or blocking of the gas path;

[0008] At least one memory metal wire and a plurality of wiring terminals; the middle portion of the memory metal wire is connected to the switch assembly, and both ends are electrically connected to the two wiring terminals respectively; the wiring terminals are electrically connected to the control circuit;

[0009] In the natural state, the switch assembly is in a closed state; the memory metal wire is used to deform when powered on and drive the switch assembly to open; the abutment portion is used to abut against the memory metal wire to reduce the noise of the memory metal wire.

[0010] According to the technical solution provided by the present invention, the interference portion includes:

[0011] At least one abutting protrusion is arranged on the housing and is located in the installation space; when the memory metal wire is energized and deformed, the end surface of the abutting protrusion abuts against the memory metal wire.

[0012] According to the technical solution provided by the present invention, the interference protrusion is plate-shaped and is arranged perpendicular to the memory metal wire.

[0013] According to the technical solution provided by the present invention, the interference portion includes:

[0014] At least one abutment column is disposed on the housing and is located in the installation space; when the memory metal wire is energized and deformed, the side wall of the abutment column abuts against the memory metal wire.

[0015] According to the technical solution provided by the present invention, the memory metal wire is divided into a first metal wire and a second metal wire on both sides with the connection with the switch component as the boundary; the abutment column is located between the first metal wire and the second metal wire; the side walls of the abutment column are respectively in abutment with the first metal wire and the second metal wire.

[0016] According to the technical solution provided by the present invention, the shell includes an upper shell and a lower shell, the circuit board is installed on the lower shell, the resistance part is arranged on the lower shell, the circuit board is provided with an avoidance hole, and the resistance part passes through the avoidance hole to abut against the memory metal wire.

[0017] According to the technical solution provided by the present invention, the switch assembly includes:

[0018] At least one switch part, the switch part is arranged in the installation space; the switch part has an air passage inside for communicating with the air path;

[0019] At least one valve core is movably installed in the switch part; the memory wire is connected to the valve core and is used to control the opening or closing of the airway to switch the open state and the closed state of the switch component.

[0020] According to the technical solution provided by the present invention, the airway in the switch portion includes an air intake airway and an air discharge airway;

[0021] Two valve cores are arranged in the switch part, which are used to control the opening or closing of the air inlet passage and the air exhaust passage respectively; the two valve cores are connected to the two memory metal wires respectively.

[0022] According to the technical solution provided by the present invention, a hanging groove is provided on the valve core, and the memory metal wire is arranged in the hanging groove.

[0023] According to the technical solution provided by the present invention, a connecting air nozzle is provided on a side of the switch portion away from the circuit board; the connecting air nozzle is communicated with the air passage and extends out of the shell for communicating with the air path.

[0024] The beneficial effects of the utility model are:

[0025] A resistance part is added inside the housing of the gas circuit controller to abut against the memory metal wire, thereby changing the vibration frequency of the memory metal wire. When the memory metal wire is connected to the power supply and vibrates, it will abut against the resistance part, thus changing the vibration frequency; at this time, the difference between the actual vibration frequency and its natural frequency becomes larger, thus avoiding resonance. Since the resistance part abuts against the memory metal wire, the amplitude of the memory metal wire can also be limited, thus reducing the loudness of the noise. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Other features, objects and advantages of the present invention will become more apparent by reading the detailed description of non-limiting embodiments made with reference to the following drawings:

[0027] Figure 1 It is a structural diagram of the gas circuit controller;

[0028] Figure 2 It is a side view of the conflicting column;

[0029] Figure 3 It is a schematic diagram showing that the memory metal wire does not abut against the abutment column;

[0030] Figure 4 A top view of the conflicting column;

[0031] Figure 5 It is a schematic diagram of the structure of the conflict column;

[0032] Figure 6 It is a top view of the internal structure of the gas circuit controller;

[0033] Figure 7 A top view of the conflicting column;

[0034] Figure 8 A schematic diagram of a resisting column disposed on an upper housing;

[0035] Fig. 9 A schematic diagram of a resistance column disposed on a lower housing;

[0036] Fig.10 It is a schematic diagram of the structure of a gas path controller with a conflict column;

[0037] Among them: 1. Shell; 2. Valve core; 3. Memory wire; 4. Terminal; 5. Resistance protrusion; 6. Resistance column; 7. Circuit board; 8. Switch assembly; 9. Avoidance hole; 10. Switch part;

[0038] 11. Upper shell; 12. Lower shell; 13. Hanging slot; 14. Connecting air nozzle;

[0039] 31. A first metal wire; 32. A second metal wire. DETAILED DESCRIPTION

[0040] The utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It is understood that the specific embodiments described herein are only used to explain the relevant utility model, rather than to limit the utility model. It is also necessary to explain that, for the convenience of description, only the parts related to the utility model are shown in the accompanying drawings.

[0041] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments of the present invention can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0042] The utility model provides a low-noise gas circuit controller, which is used to control the connection or blocking of the gas circuit, and the gas circuit is used to connect the gas components. Figure 1 and 6 ,include:

[0043] A housing 1, wherein the housing 1 has an installation space inside, wherein a circuit board 7 is arranged in the installation space; wherein the circuit board 7 has a control circuit; and wherein the housing 1 has a contact portion;

[0044] A switch assembly 8, the switch assembly 8 is installed in the installation space and is connected to the gas path; the switch assembly 8 has an open state and a closed state, and is used to control the connection or blocking of the gas path;

[0045] At least one memory metal wire 3 and at least one terminal 4; the memory metal wire 3 is connected to the switch assembly 8 and is electrically connected to the terminal 4; the terminal 4 is electrically connected to the control circuit;

[0046] In the natural state, the switch assembly 8 is in a closed state; the memory metal wire 3 is used to deform when powered on and drive the switch assembly 8 to open; the abutment portion is used to abut against the memory metal wire 3 to reduce the noise of the memory metal wire 3.

[0047] Specifically, the memory metal wire 3 is connected to the switch assembly 8 , and its two ends are fixedly connected to two different terminals 4 , and the middle of the memory metal wire 3 is connected to the switch assembly 8 . Therefore, the number of terminals 4 is twice that of the memory metal wire 3 .

[0048] A resistance part is added inside the housing of the gas circuit controller to abut against the memory metal wire, thereby changing the vibration frequency of the memory metal wire. When the memory metal wire is connected to the power supply and vibrates, it will abut against the resistance part, thus changing the vibration frequency; at this time, the difference between the actual vibration frequency and its natural frequency becomes larger, thus avoiding resonance. Since the resistance part abuts against the memory metal wire, the amplitude of the memory metal wire can also be limited, thus reducing the loudness of the noise.

[0049] The heights of the part where the abutting portion abuts against the memory metal wire 3 and the part where the memory metal wire 3 is connected to the terminal 4 are not the same, and generally the difference between the two is 0.5 to 3 mm.

[0050] In one case, the abutment portion is disposed on the upper housing 11, and the height of the portion where the memory wire 3 is connected to the terminal 4 is higher than the portion where the abutment portion abuts the memory wire 3. In another case, the abutment portion is disposed on the lower housing 12, and the height of the portion where the memory wire 3 is connected to the terminal 4 is lower than the portion where the abutment portion abuts the memory wire 3.

[0051] Further, refer to Figure 2-5 , the conflicting part comprises:

[0052] At least one abutting protrusion 5 is provided on the housing 1 and is located in the installation space; when the memory metal wire 3 is energized and deformed, an end surface of the abutting protrusion 5 abuts against the memory metal wire 3 .

[0053] Furthermore, the abutment protrusion 5 is plate-shaped and is disposed perpendicular to the memory metal wire 3 .

[0054] Specifically, the plate-shaped abutting protrusion 5 is disposed perpendicularly to the memory metal wire 3 , so that one abutting protrusion 5 can abut against a plurality of memory metal wires 3 at the same time.

[0055] In some embodiments, a plurality of mutually parallel abutting protrusions 5 are provided, and abut against a plurality of memory metal wires 3 at the same time, which can further reduce the amplitude and thus reduce the loudness of the noise.

[0056] Further, refer to Figure 7 , the conflicting part comprises:

[0057] At least one abutment column 6 is disposed on the housing 1 and is located in the installation space; when the memory metal wire 3 is energized and deformed, the side wall of the abutment column 6 abuts against the memory metal wire 3 .

[0058] In some embodiments, the end face of the abutment column 6 abuts against the memory metal wire 3, which plays a limiting role. When the memory metal wire 3 vibrates, it will be blocked by the end face of the abutment column 6, which can effectively reduce the amplitude of the memory metal wire 3 and change the vibration frequency of the memory metal wire 3, thereby avoiding resonance and reducing noise.

[0059] In some embodiments, reference Figure 8-10 The abutment column 6 can be fixed on the inner side of the upper shell 11 or the inner side of the lower shell 12 , and the abutment column 6 can be integrally formed with the upper shell 11 or the lower shell 12 .

[0060] Furthermore, the memory metal wire 3 is divided into a first metal wire 31 and a second metal wire 32 on both sides with the connection with the switch assembly 8 as the boundary; the abutment column 6 is located between the first metal wire 31 and the second metal wire 32; the side walls of the abutment column 6 abut against the first metal wire 31 and the second metal wire 32 respectively.

[0061] In some embodiments, the abutment column 6 is disposed between the first metal wire 31 and the second metal wire 32 and can abut against each section of the memory metal wire 3 at the same time, so as to reduce the vibration amplitude of the vibrating memory metal wire 3 and further reduce noise.

[0062] Furthermore, the shell 1 includes an upper shell 11 and a lower shell 12, the circuit board 7 is installed on the lower shell 12, the resistance part is arranged on the lower shell 12, and an avoidance hole 9 is provided on the circuit board 7. The resistance part passes through the avoidance hole 9, and its end part abuts against the memory metal wire 3.

[0063] In some embodiments, the housing 1 includes an upper housing 11 and a lower housing 12 that are detachably connected. The abutment portion is fixed to the inner side of the upper housing 11. Figure 2-3 When not working, the memory metal wire 3 sags under the action of gravity and separates from the abutment portion.

[0064] When the memory metal wire 3 is connected to an electric current, the memory metal wire 3 is tightened and contacts the abutting portion, thereby achieving the effect of changing the vibration frequency of the memory metal wire 3 .

[0065] Furthermore, the switch assembly 8 comprises:

[0066] At least one switch unit 10, the switch unit 10 is arranged in the installation space; the switch unit 10 has an air passage inside for communicating with the air path;

[0067] At least one valve core 2 is movably installed in the switch part 10; the memory wire 3 is connected to the valve core 2 and is used to control the opening or closing of the airway to switch the opening state and the closing state of the switch component 8.

[0068] Specifically, the memory wire 3 is deformed by powering on or off, thereby pulling the valve core 2 to move relative to the switch portion 10, thereby controlling the opening or closing of the gas path. When the valve core 2 is in a state of opening the gas path, the gas filled into the gas source assembly passes through the gas path, the valve core 2 in the gas path, and finally enters the gas path.

[0069] Furthermore, the air passage in the switch unit 10 includes an air intake passage and an air discharge passage;

[0070] Two valve cores 2 are arranged in the switch part 10, which are used to control the opening or closing of the intake airway and the exhaust airway respectively; the two valve cores 2 are connected to the two memory metal wires 3 respectively.

[0071] In some of the above-described embodiments, the air passage in the switch unit 10 includes an air intake passage and an air discharge passage. The two valve cores 2 are respectively controlled to open or close, thereby achieving the process of controlling the inflation, pressure maintenance, and deflation of the gas component, as well as the amount of gas charged into the gas component.

[0072] Furthermore, a hanging groove 13 is provided on the valve core 2 , and the memory metal wire 3 is arranged in the hanging groove 13 .

[0073] Specifically, the memory wire 3 is arranged in the hanging groove 13 so that when the memory wire 3 is deformed, the hanging groove 13 can be pulled to drive the valve core 2 to move. An elastic member is also installed on the valve core 2. When the memory wire 3 no longer pulls the valve core 2, the valve core 2 can return to a natural state under the action of the elastic member and close the airway.

[0074] Furthermore, a connecting air nozzle 14 is provided on a side of the switch portion 10 away from the circuit board 7 ; the connecting air nozzle 14 is communicated with the air passage and extends out of the housing 1 for communicating with the air path.

[0075] Specifically, the connecting air nozzle 14 is in communication with the air passage, and is used to connect the air-using component, to inflate the air-using component, or to discharge the gas in the air-using component.

[0076] The above description is only a preferred embodiment of the utility model and an explanation of the technical principles used. Those skilled in the art should understand that the scope of the utility model involved in the utility model is not limited to the technical solution formed by a specific combination of the above technical features, but also should cover other technical solutions formed by any combination of the above technical features or their equivalent features without departing from the concept of the utility model. For example, the above features are replaced with the technical features with similar functions disclosed in the utility model (but not limited to) to form a technical solution.

Claims

1. A low-noise gas circuit controller for controlling the connection or blocking of a gas circuit, the gas circuit being used to connect a common gas component, characterized in that: include: A housing (1), wherein the housing (1) has an installation space inside, wherein a circuit board (7) is arranged in the installation space; the circuit board (7) has a control circuit; and the housing (1) has a contact portion; A switch assembly (8), the switch assembly (8) being installed in the installation space and being in communication with the gas path; the switch assembly (8) having an open state and a closed state, and being used to control the communication or blocking of the gas path; At least one memory metal wire (3) and a plurality of wiring terminals (4); the middle of the memory metal wire (3) is connected to the switch assembly (8), and both ends are electrically connected to the two wiring terminals (4) respectively; the wiring terminals (4) are electrically connected to the control circuit; In a natural state, the switch assembly (8) is in a closed state; the memory metal wire (3) is used to deform when powered on and drive the switch assembly (8) to open; and the abutment portion is used to abut against the memory metal wire (3) to reduce the noise of the memory metal wire (3).

2. A low-noise gas circuit controller according to claim 1, characterized in that: The conflicting part comprises: At least one abutting protrusion (5) is arranged on the housing (1) and is located in the installation space; when the memory metal wire (3) is energized and deformed, the end surface of the abutting protrusion (5) abuts against the memory metal wire (3).

3. A low-noise gas circuit controller according to claim 2, characterized in that: The abutment protrusion (5) is plate-shaped and is arranged perpendicular to the memory metal wire (3).

4. A low-noise gas circuit controller according to claim 1, characterized in that: The conflicting part comprises: At least one abutment column (6) is arranged on the housing (1) and is located in the installation space; when the memory metal wire (3) is energized and deformed, the side wall of the abutment column (6) abuts against the memory metal wire (3).

5. A low-noise gas circuit controller according to claim 4, characterized in that: The memory metal wire (3) is divided into a first metal wire (31) and a second metal wire (32) on both sides with the connection with the switch assembly (8) as a boundary; the abutment column (6) is located between the first metal wire (31) and the second metal wire (32); and the side walls of the abutment column (6) are respectively in abutment with the first metal wire (31) and the second metal wire (32).

6. A low-noise gas circuit controller according to claim 2 or 4, characterized in that: The housing (1) comprises an upper housing (11) and a lower housing (12); the circuit board (7) is mounted on the lower housing (12); the abutment portion is arranged on the lower housing (12); an avoidance hole (9) is arranged on the circuit board (7); the abutment portion passes through the avoidance hole (9) and abuts against the memory metal wire (3).

7. A low-noise gas circuit controller according to claim 1, characterized in that: The switch assembly (8) comprises: At least one switch part (10), the switch part (10) being arranged in the installation space; the switch part (10) having an air passage inside thereof, for communicating with the air path; At least one valve core (2), the valve core (2) being movably mounted in the switch portion (10); the memory wire (3) being connected to the valve core (2) and being used to control the opening or closing of the airway to switch the open state and the closed state of the switch assembly (8).

8. A low-noise gas circuit controller according to claim 7, characterized in that: The air passage in the switch portion (10) comprises an air intake passage and an air discharge passage; Two valve cores (2) are arranged in the switch portion (10), and are used to control the opening or closing of the intake airway and the exhaust airway respectively; the two valve cores (2) are respectively connected to the two memory metal wires (3).

9. A low-noise gas circuit controller according to claim 7, characterized in that: The valve core (2) is provided with a hanging groove (13), and the memory metal wire (3) is arranged in the hanging groove (13).

10. A low-noise gas circuit controller according to claim 7, characterized in that: A connecting air nozzle (14) is provided on a side of the switch portion (10) away from the circuit board (7); the connecting air nozzle (14) is in communication with the air passage and extends out of the housing (1) for communication with the air path.

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