Pneumatic switch

Abstract

The utility model relates to the technical field of switches, and provides a pneumatic switch which comprises an installation support, a microswitch and a wind baffle, the installation support is used for being installed on the side wall of an air outlet of a draught fan, the microswitch is arranged on the installation support and provided with a contact piece, and the wind baffle is located at the air outlet of the draught fan and connected with the contact piece of the microswitch. The microswitch is electrically connected with a receiver, and when the fan blows the air baffle, the microswitch is triggered and generates an electric signal to the receiver. The pneumatic switch can improve the accuracy of detecting whether the fan operates normally or not.

Description

Technical Field

[0001] The present application relates to the technical field of switches, and in particular to pneumatic switches. Background Art

[0002] Fan cooling is a technology that uses forced convection heat exchange by fans to cool equipment. It uses the airflow generated by the fan to remove the heat from the surface of the equipment, lowering the temperature of the equipment and ensuring the normal operation of the equipment. Fan cooling is widely used in various equipment that requires heat dissipation, such as power electronic equipment, mechanical equipment, communication equipment, etc.

[0003] In reality, most people judge whether a fan is operating normally through manual inspection, such as visual inspection, listening, or placing their hands on the fan outlet to observe whether the fan is operating normally. However, when the fan is stopped or the external wind flow causes the fan blades to rotate, this type of manual observation is prone to misjudgment, and there is a possibility that the equipment will be damaged due to untimely heat dissipation. Utility Model Content

[0004] In order to improve the accuracy of detecting whether the fan is operating normally, the present application provides a pneumatic switch.

[0005] The pneumatic switch provided in this application adopts the following technical solution:

[0006] A pneumatic switch comprises a mounting bracket, a micro switch and a wind deflector, wherein the mounting bracket is used to be mounted on the side wall of the fan outlet, the micro switch is arranged on the mounting bracket, the micro switch has a contact sheet, the wind deflector is located at the fan outlet and is connected to the contact sheet of the micro switch; the micro switch is electrically connected to a receiver, and when the fan blows the wind deflector, the micro switch is triggered and generates an electrical signal to the receiver.

[0007] By adopting the above-mentioned technical scheme, through the setting of the mounting bracket, the micro switch and the wind deflector, the mounting bracket is installed on the side wall of the fan outlet, so that the wind deflector is located at the fan outlet. When the fan is running, the wind blown out of the fan outlet can blow the wind deflector, and the wind deflector drives the contact piece of the micro switch to move, thereby triggering the micro switch to generate an electrical signal to the receiver, so as to judge whether the fan is in operation, thereby improving work efficiency and judging the accuracy of normal operation of the fan.

[0008] Optionally, the mounting bracket includes a mounting plate and two wing plates, the two wing plates are both arranged on the plate surface of the mounting plate, and the two wing plates are symmetrically distributed on both sides of the mounting plate, and the mounting plate and the two wing plates are combined to form a mounting area; the micro switch is arranged in the mounting area, and a connecting piece is provided between the wing plate and the micro switch, and the micro switch is detachably installed in the mounting area through the connecting piece.

[0009] By adopting the above technical solution, through the arrangement of the mounting plate and the two wing plates, a mounting area is formed between the mounting plate and the two wing plates, so that the micro switch is installed in the mounting area through the connecting piece.

[0010] Optionally, an air outlet sleeve is provided at the air outlet of the fan, a mounting piece is provided between the mounting plate and the air outlet sleeve, and the mounting plate is detachably mounted on the air outlet sleeve via the mounting piece.

[0011] By adopting the above technical solution and setting the mounting member, the mounting plate is mounted on the air outlet sleeve through the mounting member, so that the micro switch and the wind baffle are installed at the air outlet of the fan.

[0012] Optionally, a first mounting hole is formed on the plate surface of the mounting plate, and a second mounting hole is formed on the side wall of the air outlet sleeve; the mounting member includes a mounting bolt, which is sequentially passed through the first mounting hole and the second mounting hole and is threadedly connected to the second mounting hole.

[0013] By adopting the above technical solution, when the mounting plate is installed, the first mounting hole of the mounting plate is aligned with the second mounting hole of the air outlet sleeve, and then the mounting bolts are sequentially passed through the first mounting hole and the second mounting hole, so that the mounting bolts are threadedly connected with the second mounting hole, and the micro switch can be installed on the air outlet sleeve.

[0014] Optionally, the mounting member includes a first clamping bar, a second clamping bar and a clamping spring, the first clamping bar is fixed to the board surface of the mounting plate away from the wing plate, the second clamping bar is slidably installed on the board surface of the mounting plate away from the wing plate, and a clamping channel for inserting the air outlet sleeve is formed between the first clamping bar and the second clamping bar; the clamping spring is installed between the second clamping bar and the mounting plate, and the clamping spring normally moves the second clamping bar toward the side close to the first clamping bar, and clamps the first clamping bar and the second clamping bar together on the air outlet sleeve.

[0015] By adopting the above-mentioned technical scheme, through the arrangement of the first clamping strip, the second clamping strip and the clamping spring, when the mounting plate is installed, the clamping channel is aligned with the air outlet sleeve and pushed, so that the first clamping strip and the second clamping strip respectively enter the inner and outer sides of the air outlet sleeve, and the second clamping strip can be pressed against the air outlet sleeve under the action of the clamping spring, so that the first clamping strip and the second clamping strip can be clamped on the air outlet sleeve together, so that the mounting plate is clamped and fixed to the air outlet sleeve; when disassembling, the mounting plate can be disassembled by pulling the mounting plate outward, thereby improving the convenience of disassembly and assembly between the mounting plate and the air outlet sleeve.

[0016] Optionally, the side walls of the first clamping strip and the second clamping strip that are close to each other are each provided with a plurality of anti-slip strips, and the plurality of anti-slip strips are arranged at intervals along the length direction of the air outlet sleeve.

[0017] By adopting the above-mentioned technical solution and setting anti-slip strips, multiple anti-slip strips can improve the surface roughness of the first clamping strip and the second clamping strip, thereby increasing the friction between the first clamping strip and the air outlet sleeve, and between the second clamping strip and the air outlet sleeve, thereby improving the connection stability between the mounting plate and the air outlet sleeve.

[0018] Optionally, a first magnet is embedded in the first clamping strip, and a second magnet is embedded in the second clamping strip. When the first clamping strip and the second clamping strip are clamped on the air outlet sleeve together, the first magnet and the second magnet are magnetically attracted to each other.

[0019] By adopting the above-mentioned technical solution, through the arrangement of the first magnet and the second magnet, after the first clamping strip and the second clamping strip are clamped on the air outlet sleeve, the first magnet and the second magnet are magnetically attracted to each other, and the magnetic attraction force can make the first clamping strip and the second clamping strip firmly pressed against the air outlet sleeve, further improving the connection stability between the mounting plate and the air outlet sleeve.

[0020] Optionally, the first clamping strip is clamped on the inner wall of the air outlet sleeve, the second clamping strip is clamped on the outer wall of the air outlet sleeve, and the side wall of the first clamping strip away from the second clamping strip gradually moves away from the clamping channel from the side away from the mounting plate to the side close to the mounting plate.

[0021] By adopting the above-mentioned technical solution, when the air outlet of the fan blows air outward through the air outlet sleeve, the airflow can act on the side wall of the first clamping bar away from the second clamping bar, and the side wall of the first clamping bar away from the second clamping bar gradually moves away from the clamping channel from the side away from the mounting plate to the side close to the mounting plate. The airflow has a component force pushing the first clamping bar toward the side close to the clamping channel, thereby improving the clamping effect of the first clamping bar and the second clamping bar on the air outlet sleeve.

[0022] In summary, the present application includes at least one of the following beneficial technical effects:

[0023] 1. Through the installation of the mounting bracket, micro switch and wind deflector, the mounting bracket is installed on the side wall of the fan outlet so that the wind deflector is located at the fan outlet. When the fan is running, the wind blown out of the fan outlet can blow the wind deflector, and the wind deflector drives the contact piece of the micro switch to move, thereby triggering the micro switch to generate an electrical signal to the receiver, thereby judging whether the fan is in operation, improving work efficiency and judging the accuracy of normal operation of the fan;

[0024] 2. Through the arrangement of the first clamping strip, the second clamping strip and the clamping spring, when installing the mounting plate, align the clamping channel with the air outlet sleeve and push it, so that the first clamping strip and the second clamping strip enter the inner and outer sides of the air outlet sleeve respectively, and the second clamping strip can be pressed against the air outlet sleeve under the action of the clamping spring, so that the first clamping strip and the second clamping strip can be clamped on the air outlet sleeve together, so that the mounting plate is clamped and fixed on the air outlet sleeve; when disassembling, the mounting plate can be pulled outward to disassemble the mounting plate, thereby improving the convenience of disassembly and assembly between the mounting plate and the air outlet sleeve;

[0025] 3. Through the arrangement of the first magnet and the second magnet, after the first clamping strip and the second clamping strip are clamped on the air outlet sleeve, the first magnet and the second magnet are magnetically attracted to each other, and the magnetic attraction force can make the first clamping strip and the second clamping strip firmly pressed against the air outlet sleeve, further improving the connection stability between the mounting plate and the air outlet sleeve. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a structural schematic diagram of Embodiment 1 showing that the mounting bracket is installed on the air outlet sleeve;

[0027] Figure 2 is a schematic diagram of the overall structure of Example 1;

[0028] Figure 3 is a partial cross-sectional view of the mounting member of embodiment 1;

[0029] Figure 4 It is a partial cross-sectional view of the mounting member according to the second embodiment.

[0030] Explanation of the accompanying drawings: 1. Mounting bracket; 11. Mounting plate; 111. First mounting hole; 112. Sliding groove; 12. Wing plate; 13. Mounting area; 14. Connecting bolt; 15. Fixing strip; 2. Micro switch; 21. Contact piece; 3. Wind deflector; 4. Fan; 41. Air outlet sleeve; 411. Second mounting hole; 412. Mounting strip; 5. Mounting part; 51. Mounting bolt; 52. First clamping strip; 521. First magnet; 53. Second clamping strip; 531. Second magnet; 532. Sliding block; 54. Clamping spring; 55. Clamping channel; 56. Anti-slip strip. DETAILED DESCRIPTION

[0031] The following is combined with Figure 1-4 This application is described in further detail.

[0032] Embodiment 1:

[0033] The embodiment of the present application discloses a pneumatic switch.

[0034] Reference Figure 1 , Figure 2The pneumatic switch includes a mounting bracket 1, a micro switch 2 and a wind deflector 3. The mounting bracket 1 is used to be installed at the outlet end of the fan 4. Specifically, an air outlet sleeve 41 is fixedly connected to the outlet end of the fan 4, and the fan 4 blows air outward through the air outlet sleeve 41; the mounting bracket 1 includes a mounting plate 11 and two wing plates 12, and the mounting plate 11 and the two wing plates 12 are integrally formed. The two wing plates 12 are fixedly mounted on the board surface of the mounting plate 11, and the two wing plates 12 are symmetrically distributed on both sides of the board surface of the mounting plate 11.

[0035] Reference Figure 2 , Figure 3 A mounting member 5 is provided between the mounting plate 11 and the air outlet sleeve 41, and the mounting plate 11 can be detachably mounted on the air outlet sleeve 41 through the mounting member 5; a first mounting hole 111 is provided on the plate surface of the mounting plate 11, and the first mounting hole 111 is a through hole that penetrates the mounting plate 11, and a mounting strip 412 is fixedly installed on the top wall of the end of the air outlet sleeve 41 away from the fan 4, and a second mounting hole 411 is provided on the side wall of the mounting strip 412 close to the mounting plate 11; in this embodiment, the mounting member 5 is configured as a mounting bolt 51, and the mounting bolt 51 is sequentially penetrated through the first mounting hole 111 and the second mounting hole 411 and is threadedly connected with the second mounting hole 411, and the mounting bracket 1 can be detachably mounted on the end of the air outlet sleeve 41 away from the fan 4 through the mounting bolt 51.

[0036] Reference Figure 1 , Figure 2 The mounting plate 11 and the two wing plates 12 are combined to form a mounting area 13, and the micro switch 2 is installed in the mounting area 13. The micro switch 2 is a prior art and its structure is not elaborated in detail here. A connecting piece is provided between the wing plate 12 and the micro switch 2, and the micro switch 2 can be detachably installed in the mounting area 13 through the connecting piece.

[0037] Reference Figure 2 The side wall of the wing plate 12 is provided with a connecting hole (not shown in the figure) connected to the installation area 13, and the connecting member is provided with a connecting bolt 14, which is passed through the connecting hole and is threadedly connected with the connecting hole. The connecting bolt 14 is used to press against the micro switch 2 to limit the micro switch 2 in the installation area 13. The micro switch 2 can be detachably installed in the installation area 13 through the connecting bolt 14.

[0038] Reference Figure 2 , Figure 3 The micro switch 2 has a contact piece 21, the wind deflector 3 is located at the air outlet of the fan 4, and the wind deflector 3 is fixedly connected to the contact piece 21 of the micro switch 2; the micro switch 2 is electrically connected to a receiver (not shown in the figure), and when the fan 4 blows the wind deflector 3, the micro switch 2 is triggered and generates an electrical signal to the receiver.

[0039] The implementation principle of Example 1 of the present application is as follows: the micro switch 2 and the wind deflector 3 are installed on the air outlet sleeve 41 through the mounting bracket 1. When the fan 4 is running, the wind blown out by the fan 4 can blow the wind deflector 3, so that the wind deflector 3 drives the contact piece 21 of the micro switch 2 to move, thereby triggering the micro switch 2 to generate an electrical signal to the receiver. People can determine whether the fan 4 is in operation through the electrical signal received by the receiver, thereby improving work efficiency and judging the accuracy of normal operation of the fan 4.

[0040] Embodiment 2:

[0041] The embodiment of the present application discloses a pneumatic switch.

[0042] Reference Figure 4 The difference between the pneumatic switch disclosed in the embodiment of the present application and the embodiment 1 is that:

[0043] In this embodiment, the mounting member 5 includes a first clamping strip 52, a second clamping strip 53 and a clamping spring 54. The first clamping strip 52 is fixedly mounted on the board surface of the mounting plate 11 away from the wing plate 12. A sliding groove 112 is provided on the board surface of the mounting plate 11 away from the wing plate 12. The second clamping strip 53 is arranged on the side of the mounting plate 11 away from the wing plate 12, and the second clamping strip 53 is located above the first clamping strip 52. A sliding block 532 is fixedly mounted on the side wall of the second clamping strip 53 close to the mounting plate 11. The sliding block 532 is slidably mounted in the sliding groove 112. The second clamping strip 53 is slidably mounted on the mounting plate 11 through the sliding block 532. A clamping channel 55 for plugging in the air outlet sleeve 41 is formed between the first clamping strip 52 and the second clamping strip 53.

[0044] Reference Figure 4 A fixing strip 15 is fixedly installed on the surface of the mounting plate 11 away from the wing plate 12. The fixing strip 15 is located on the side of the second clamping strip 53 away from the first clamping strip 52. One end of the clamping spring 54 is fixedly connected to the fixing strip 15, and the other end is fixedly connected to the second clamping strip 53. The clamping spring 54 normally moves the second clamping strip 53 toward the side close to the first clamping strip 52, and clamps the first clamping strip 52 and the second clamping strip 53 together on the air outlet sleeve 41.

[0045] It should be noted that, in the present embodiment, when the air outlet sleeve 41 is inserted into the clamping channel 55, the first clamping strip 52 is clamped on the inner wall of the air outlet sleeve 41, and the second clamping strip 53 is clamped on the outer wall of the air outlet sleeve 41; the side wall of the first clamping strip 52 away from the second clamping strip 53 gradually moves away from the clamping channel 55 from the side away from the mounting plate 11 to the side close to the mounting plate 11.

[0046] Reference Figure 4The side walls of the first clamping strip 52 and the second clamping strip 53 that are close to each other are each provided with a plurality of anti-slip strips 56, and the plurality of anti-slip strips 56 are arranged at intervals along the length direction of the air outlet sleeve 41, and the anti-slip strips 56 are made of rubber; the first clamping strip 52 is embedded with a first magnet 521, and the second clamping strip 53 is embedded with a second magnet 531. When the first clamping strip 52 and the second clamping strip 53 are clamped together on the air outlet sleeve 41, the first magnet 521 and the second magnet 531 are magnetically attracted to each other.

[0047] The implementation principle of Example 2 of the present application is: when the mounting bracket 1 and the air outlet sleeve 41 are installed, the second clamping strip 53 is pulled to force the second clamping strip 53 to move toward the side away from the first clamping strip 52, and then the clamping channel 55 is aligned with the air outlet sleeve 41 and pushed toward the side close to the fan 4, so that the air outlet sleeve 41 is inserted into the clamping channel 55. After the air outlet sleeve 41 is inserted into the clamping channel 55, the second clamping strip 53 is released, so that the first clamping strip 52 is clamped on the inner wall of the air outlet sleeve 41, and the second clamping strip 53 is clamped on the outer wall of the air outlet sleeve 41, which greatly improves the convenience of disassembly and assembly between the mounting bracket 1 and the air outlet sleeve 41.

[0048] The above are preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. Pneumatic switch, characterized by: The invention comprises a mounting bracket (1), a micro switch (2) and a wind deflector (3); the mounting bracket (1) is used to be mounted on the side wall of an air outlet of a fan (4); the micro switch (2) is arranged on the mounting bracket (1); the micro switch (2) has a contact piece (21); the wind deflector (3) is located at the air outlet of the fan (4) and is connected to the contact piece (21) of the micro switch (2); the micro switch (2) is electrically connected to a receiver; when the fan (4) blows the wind deflector (3), the micro switch (2) is triggered and generates an electrical signal to the receiver.

2. The pneumatic switch according to claim 1, characterized in that: The mounting bracket (1) comprises a mounting plate (11) and two wing plates (12); the two wing plates (12) are both arranged on the plate surface of the mounting plate (11), and the two wing plates (12) are symmetrically distributed on both sides of the mounting plate (11); the mounting plate (11) and the two wing plates (12) are combined to form a mounting area (13); the micro switch (2) is arranged in the mounting area (13); a connecting piece is provided between the wing plate (12) and the micro switch (2); and the micro switch (2) is detachably mounted in the mounting area (13) via the connecting piece.

3. The pneumatic switch according to claim 2, characterized in that: An air outlet sleeve (41) is provided at the air outlet of the fan (4), a mounting member (5) is provided between the mounting plate (11) and the air outlet sleeve (41), and the mounting plate (11) is detachably mounted on the air outlet sleeve (41) via the mounting member (5).

4. The pneumatic switch according to claim 3, characterized in that: The plate surface of the mounting plate (11) is provided with a first mounting hole (111), and the side wall of the air outlet sleeve (41) is provided with a second mounting hole (411); the mounting member (5) comprises a mounting bolt (51), and the mounting bolt (51) is sequentially passed through the first mounting hole (111) and the second mounting hole (411) and is threadedly connected to the second mounting hole (411).

5. The pneumatic switch according to claim 3, characterized in that: The mounting member (5) comprises a first clamping strip (52), a second clamping strip (53) and a clamping spring (54); the first clamping strip (52) is fixed to a plate surface of the mounting plate (11) away from the wing plate (12); the second clamping strip (53) is slidably mounted on a plate surface of the mounting plate (11) away from the wing plate (12); a clamping channel (55) for inserting the air outlet sleeve (41) is formed between the first clamping strip (52) and the second clamping strip (53); the clamping spring (54) is mounted between the second clamping strip (53) and the mounting plate (11); the clamping spring (54) normally causes the second clamping strip (53) to move toward a side close to the first clamping strip (52), and causes the first clamping strip (52) and the second clamping strip (53) to be clamped together on the air outlet sleeve (41).

6. The pneumatic switch according to claim 5, characterized in that: The side walls of the first clamping strip (52) and the second clamping strip (53) that are close to each other are each provided with a plurality of anti-slip strips (56), and the plurality of anti-slip strips (56) are arranged at intervals along the length direction of the air outlet sleeve (41).

7. The pneumatic switch according to claim 5, characterized in that: The first clamping strip (52) is embedded with a first magnet (521), and the second clamping strip (53) is embedded with a second magnet (531). When the first clamping strip (52) and the second clamping strip (53) are clamped together on the air outlet sleeve (41), the first magnet (521) and the second magnet (531) are magnetically attracted to each other.

8. The pneumatic switch according to claim 5, characterized in that: The first clamping strip (52) is clamped on the inner wall of the air outlet sleeve (41), and the second clamping strip (53) is clamped on the outer wall of the air outlet sleeve (41), and the side wall of the first clamping strip (52) away from the second clamping strip (53) gradually moves away from the clamping channel (55) from the side away from the mounting plate (11) to the side close to the mounting plate (11).

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