A pressure controller
By introducing a limiting protrusion into the pressure controller to restrict the displacement of the elastic sheet, the problem of easy breakage of the spring sheet during the sudden deformation of the diaphragm is solved, thus improving the reliability and lifespan of the pressure controller.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ZHEJIANG SANHUA COMMERCIAL REFRIGERATION CONTROLS CO LTD SHAOXING CITY
- Filing Date
- 2025-06-17
- Publication Date
- 2026-06-09
AI Technical Summary
In existing pressure controllers, the impact force during the sudden deformation of the diaphragm causes excessive deformation of the reed, which is prone to breakage and affects reliability.
By limiting the displacement of the elastic sheet with the limiting protrusion of the base, and with the middle section abutting against the stop part, the instantaneous deformation of the elastic sheet is reduced, ensuring reliability.
This effectively reduces excessive deformation of the elastic sheet caused by the instantaneous impact force of the transmission components, thus improving the reliability and lifespan of the pressure controller.
Smart Images
Figure CN224342231U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of pressure control technology, specifically to a pressure controller. Background Technology
[0002] The pressure switch in a pressure controller is a safety protection component that controls the system by sensing fluid pressure and converting it into an electrical signal for opening or closing via mechanical transmission.
[0003] Figure 1 The diagram shown is a structural schematic of a pressure controller in the related art. Figure 1A for Figure 1 A schematic diagram illustrating the stress analysis of the reed at the instant of sudden deformation and jump of the diaphragm. (See diagram below.) Figure 1 As shown, the pressure controller includes a reed 1', a moving contact 2', a stationary contact 3', a push rod 4', and a diaphragm 5'. The movable end of the reed 1' is connected to the moving contact 2'. Under abnormal pressure, the diaphragm 5' deforms and jumps, causing the push rod 4' to push the reed 1' to move, making the moving contact 2' contact or separate from the stationary contact 3', thereby achieving circuit on / off control. In the above pressure controller, the instantaneous impact force of the diaphragm 5' deforming and jumping will act on the reed 1' through the push rod 4'. The reed 1' will undergo excessive deformation due to the force of the push rod 4', which can easily lead to the reed 1' breaking under stress, affecting the reliability of the pressure controller. Therefore, this pressure controller has room for improvement. Utility Model Content
[0004] The purpose of this application is to provide a pressure controller, including a control component, a base component, and a transmission component. The base component includes a first insert, a second insert, and a base. The base includes a cover-like portion. The first insert is limited or fixedly connected to the cover-like portion. The first insert includes a first connecting portion. The second insert is limited or fixedly connected to the cover-like portion. The second insert includes a second connecting portion. The control component includes a moving contact, a stationary contact, and an elastic plate. The elastic plate includes a first end, a middle section, and a second end. In the longitudinal direction of the pressure controller, the elastic plate is located at... Between the cover-shaped portion and the transmission member, in the transverse direction of the pressure controller, the middle section is located between the first end and the second end, the first connecting portion is connected to the first end, and the second end is connected to the moving contact; the cover-shaped portion includes a downwardly protruding limiting protrusion, the limiting protrusion includes a first stop portion, the middle section can abut against the first stop portion, and the moving contact and the stationary contact are in contact state. The maximum distance between the transmission member and the first stop portion in the longitudinal direction of the pressure controller is defined as H, which satisfies 0.5mm≤H1≤1mm.
[0005] The pressure controller of this application limits the displacement of the elastic plate by limiting the protrusion of the base. During the process of the transmission component pushing the elastic plate to separate the moving contact from the stationary contact, the middle section of the elastic plate can abut against the first stop part, so that the moving contact and the stationary contact are separated, the excessive deformation of the elastic plate caused by the instantaneous impact force of the transmission component is reduced, thereby ensuring the reliability of the pressure controller.
[0006] The purpose of this application is to provide a pressure controller, including a control component, a base component, and a transmission component. The base component includes a first insert, a second insert, and a base. The base includes a cover-shaped portion. The first insert is limited or fixedly connected to the cover-shaped portion. The first insert includes a first connecting portion. The second insert is limited or fixedly connected to the cover-shaped portion. The second insert includes a second connecting portion. The control component includes a moving contact, a stationary contact, and an elastic sheet. The elastic sheet includes a first end, a middle section, and a second end. In the longitudinal direction of the pressure controller, the elastic sheet is located between the cover-shaped portion and the transmission component. In the transverse direction of the pressure controller, the middle section is located between the first end and the second end. The first connecting portion is connected to the first end, and the second end is connected to the moving contact. The cover-shaped portion includes a downwardly protruding limiting protrusion. The limiting protrusion includes a first stop and a second stop. The second stop is located above the moving contact. The middle section can abut against the first stop, and the moving contact can abut against the second stop.
[0007] The pressure controller of this application limits the displacement of the elastic plate by limiting the protrusion of the base. During the process of the transmission component pushing the elastic plate to separate the moving contact from the stationary contact, the middle section of the elastic plate can abut against the first stop part, and the moving contact can abut against the second stop part. This reduces the excessive deformation of the elastic plate caused by the instantaneous impact force of the transmission component when the moving contact and the stationary contact are separated, thereby ensuring the reliability of the pressure controller. Attached Figure Description
[0008] Figure 1 This is a schematic diagram of the structure of a pressure controller in related technologies;
[0009] Figure 1A for Figure 1 A schematic diagram of stress analysis of the spring at the instant of sudden deformation of the diaphragm;
[0010] Figure 2 A cross-sectional schematic diagram of a pressure controller in the closed state provided in this application;
[0011] Figure 3 for Figure 2 A schematic diagram at point A in the middle;
[0012] Figure 4 for Figure 2 A cross-sectional view of the medium pressure controller in the off state;
[0013] Figure 4A for Figure 4 A schematic diagram of stress analysis of the elastic sheet at the instant of sudden deformation of the diaphragm;
[0014] Figure 5 for Figure 2 A three-dimensional half-section diagram of the central base;
[0015] Figure 6 A cross-sectional schematic diagram of another pressure controller provided in this application in the closed state;
[0016] Figure 7 for Figure 6 A schematic diagram at point B in one example;
[0017] Figure 7A for Figure 6 A schematic diagram at point B in another example;
[0018] Figure 8 for Figure 6 A cross-sectional view of the medium pressure controller in the off state;
[0019] Figure 9 for Figure 8 A schematic diagram at point C in the middle;
[0020] Figure 10 for Figure 6 A three-dimensional half-section diagram of the central base.
[0021] 1. Control component; 13. Moving contact; 131. Protrusion; 14. Stationary contact; 15. Elastic sheet; 151. First end; 1151. Straight section; 1152. Bending section; 152. Middle section; 1521. Arc-shaped protrusion; 153. Second end;
[0022] 2. Base component; 21. Base; 211. Cover-shaped portion; 2111. Limiting protrusion; 2111a. First protrusion; 2111b. Second protrusion; 21111. Second stop portion; 21112. First arc-shaped portion; 21113. First stop portion; 21114. Second arc-shaped portion; 2112. First through hole portion; 2113. Second through hole portion; 212. Cylindrical portion;
[0023] 22. First insert; 221. First connecting part; 23. Second insert; 231. Second connecting part;
[0024] 3. Transmission component; 31. Transmission element; 311. Third end; 3111. First end face; 312. Fourth end; 32. Guide seat; 322. Guide hole;
[0025] 4. Air box components; 41. Limiting plate; 42. Diaphragm; 421. Edge; 43. Seat; 44. Connector or joint; 5. Housing. Detailed Implementation
[0026] The embodiments of this application will be further described below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are merely illustrative of this application and are not intended to limit this application.
[0027] Figure 2 A cross-sectional schematic diagram of a pressure controller in the closed state provided in this application; Figure 3 for Figure 2 A schematic diagram at point A in the middle; Figure 4 for Figure 2 A cross-sectional view of the medium pressure controller in the off state;
[0028] Figure 4A for Figure 4 A schematic diagram of stress analysis of the elastic sheet at the instant of sudden deformation of the diaphragm; Figure 5 for Figure 2 A three-dimensional half-section diagram of the central base.
[0029] It should be noted that, with Figure 2 For example, the lateral direction of the pressure controller is the radial direction of the base 21 or the radial direction of the transmission component 31, and the longitudinal direction of the pressure controller is the axial direction of the base 21 or the axial direction of the transmission component 31.
[0030] The pressure controller in this embodiment can be used for high and low pressure protection of the compressor, high pressure control of the condenser fan, low pressure control of the evaporator fan, and in situations where there are specific pressure requirements in the system.
[0031] As shown in the figure, the pressure controller in this embodiment includes a control component 1, a base component 2, a transmission component 3, an air box component 4, and a housing 5. The base component 2 includes a first insert 22, a second insert 23, and a base 21. The first insert 22 and the second insert 23 are arranged laterally in the pressure controller. The base 21 is in the shape of an inverted cup, that is, the opening of the base 21 faces the air box component 4. The base 21 includes a cover-shaped part 211 and a cylindrical part 212. The cylindrical part 212 extends downward from the outer edge of the cover-shaped part 211. The cover-shaped part 211 includes a first through hole 2112 and a second through hole 2113. The first through hole 2112 extends longitudinally along the pressure controller, and the second through hole 2113 extends longitudinally along the pressure controller. The first insert 22 is limited or fixedly connected to the cover-shaped part 211. A portion of the first insert 22 is located in the first through hole 2112. The first insert 22 includes a first connecting portion 221 located below the cover-shaped part 211. The second insert 23 is limited or fixedly connected to the cover-shaped part 211. A portion of the second insert 23 is located in the second through hole 2113. The second insert 23 includes a second connecting portion 231 located below the cover-shaped part 211.
[0032] The control component 1 includes a moving contact 13, a stationary contact 14, and an elastic sheet 15. The elastic sheet 15 is a spring. In the longitudinal direction of the pressure controller, the elastic sheet 15 is located between the cover-shaped part 211 and the transmission component 31 described below. The elastic sheet 15 includes a first end 151, an intermediate section 152, and a second end 153. In the transverse direction of the pressure controller, the intermediate section 152 is located between the first end 151 and the second end 153. The first end 151 includes a straight section 1511 and a bent section 1512. The bent section 1512 is connected to the intermediate section 152. The straight section 1511 of the first end 151 is riveted to the first connecting part 221. The second end 153 is riveted to the moving contact 13.
[0033] The transmission component 3 includes a transmission member 31 and a guide seat 32. The guide seat 32 is limited or fixedly connected to the cylindrical part 212. The guide seat 32 sits on the upper end face of the limiting plate 41. The guide seat 32 includes a guide hole 321, which penetrates the guide seat 32 along the longitudinal direction of the pressure controller. The transmission member 31 cooperates with the guide hole 321. The transmission member 31 includes a third end 311 and a fourth end 312. The third end 311 can contact the elastic sheet 15, and the fourth end 312 abuts against the diaphragm 42.
[0034] The air box component 4 includes a limiting plate 41, a diaphragm 42, a seat 43, and a connecting pipe or connector 44. The limiting plate 41 includes a through hole with a diameter larger than that of the transmission component 31. The diaphragm 42 is located below the transmission component 3 and is circular in shape. The diaphragm 42 includes an edge portion 421. In the longitudinal direction of the pressure controller, the upper end face of the edge portion 421 abuts against the limiting plate 41, and the lower end face of the edge portion 421 abuts against the seat 43. The seat 43 is fixedly connected to the connecting pipe or connector 44. The limiting plate 41, the diaphragm 42, and the seat 43 are fixed by laser welding.
[0035] The pressure controller in this embodiment is a normally closed pressure controller, wherein the moving contact 13 is located above the stationary contact 14. When the pressure controller is closed, the elastic sheet 15, due to its own elastic force, makes the moving contact 13 contact the stationary contact 14. When the pressure controller detects that the pressure of the medium rises and the pressure reaches or exceeds the set threshold, the pressure of the medium is converted into the displacement of the transmission member 31 by the sudden deformation of the diaphragm 42. The transmission member 31 converts the displacement into the separation of the stationary contact 14 and the moving contact 13 through the elastic sheet 15, thereby realizing the cut-off protection of the system.
[0036] like Figure 2-5 As shown, the cover-shaped portion 211 includes a downwardly protruding limiting protrusion 2111, which includes a first stop portion 21113. The middle section 152 can abut against the first stop portion 21113. When the moving contact 13 and the stationary contact 14 are in contact, the maximum longitudinal distance between the middle section 152 and the first stop portion 21113 in the pressure controller is defined as H1, which satisfies 0.5mm≤H1≤1mm. In this embodiment, the pressure controller limits the displacement of the elastic plate 15 by the limiting protrusion 2111 of the base 21. During the process of the transmission member 31 pushing the elastic plate 15 to displace the moving contact 13 and the stationary contact 14, the middle section 152 of the elastic plate 15 can abut against the first stop portion 21113, so that when the moving contact 13 and the stationary contact 14 are separated, the excessive deformation of the elastic plate 15 caused by the instantaneous impact force of the transmission member 31 is reduced (see reference). Figure 4A (As shown), this ensures the reliability of the pressure controller.
[0037] It should be understood that in a pressure controller, the elastic plate 15 is crucial to the reliability of the pressure controller. Therefore, compared with the pressure controller in the prior art, if the displacement distance of the elastic plate 15 cannot be directly limited, the deformation of the elastic plate 15 will be too large, which will not only easily lead to the breakage of the elastic plate 15 and cause the pressure controller to fail, but the elastic plate 15 will also be excessively deformed, causing the calibration value to drift.
[0038] In this configuration, when the moving contact 13 and the stationary contact 14 are in contact, the transmission member 31 and the intermediate section 152 are separated by a first gap X in the longitudinal direction of the pressure controller. This first gap X ensures that the transmission member 31 can only contact the elastic plate 15 when the diaphragm 42 suddenly jumps when the pressure reaches the set threshold. Therefore, small fluctuations in the diaphragm 42 can be ignored, effectively ensuring the operational performance of the pressure controller. This not only makes the separation of the moving contact 13 and the stationary contact 14 more decisive, but also, due to the presence of the first gap X, makes the reset process of the elastic plate 15 smoother, avoiding interference from the resistance of the diaphragm 42 during the rebound of the elastic plate 15.
[0039] like Figure 5 As shown, the limiting protrusion 2111 includes a first arc-shaped portion 21112, and the first arc-shaped portion 21112 includes a first stop portion 21113. Thus, when the elastic sheet 15 abuts against the first arc-shaped portion 21112, since the middle section 152 of the elastic sheet 15 is in contact with the arc surface, stress concentration can be reduced, thereby improving the reliability and lifespan of the elastic sheet 15, and ultimately ensuring the reliability of the pressure controller.
[0040] In this embodiment, the base 21 is an injection molded part, and the cover-shaped part 211 and the limiting protrusion 2111 are integrally injection molded.
[0041] like Figure 3 As shown, the intermediate section 152 includes an arc-shaped protrusion 1521 protruding toward the transmission member 31, and the third end 311 of the transmission member 31 includes a first end face 3111, which can contact the arc-shaped protrusion 1521. This facilitates the transmission member 31 pressing against the elastic sheet 15, making the elastic sheet 15's operation reliable.
[0042] like Figure 1-2 , Figure 4 As shown, in the longitudinal direction of the pressure controller, the limiting protrusion 2111 is located below the transmission member 31. In this embodiment, the cross-section of the limiting protrusion 2111 is circular, and the diameter of the limiting protrusion 2111 is larger than the diameter of the transmission member 31. Since the movement path of the transmission member 31 is along the longitudinal direction of the pressure controller, by setting the limiting protrusion 2111 directly above the transmission member 31 in the longitudinal direction of the pressure controller, the limiting of the elastic sheet 15 can be reliably ensured.
[0043] Figure 6 A cross-sectional schematic diagram of another pressure controller provided in this application in the closed state; Figure 7 for Figure 6 A schematic diagram at point B in one example; Figure 7A for Figure 6 A schematic diagram at point B in another example; Figure 8 for Figure 6 A cross-sectional view of the medium pressure controller in the off state; Figure 9for Figure 8 A schematic diagram at point C in the middle; Figure 10 for Figure 6 A three-dimensional half-section diagram of the central base.
[0044] This embodiment addresses the problem that during the closing and opening process of the pressure controller, the second end 153 of the elastic sheet 15 may experience excessive swinging due to the weight of the moving contact 13 caused by the inertial force, leading to the breakage of the elastic sheet 15. This embodiment further addresses this problem with the following design:
[0045] like Figure 6-10 As shown, the cover-shaped portion 211 includes a downwardly protruding limiting protrusion 2111. The limiting protrusion 2111 includes a first stop portion 21113 and a second stop portion 21111. The second stop portion 21111 is located above the moving contact 13. The middle section 152 can abut against the first stop portion 21113, and the moving contact 13 can abut against the second stop portion 21111. In this embodiment, the pressure controller limits the displacement of the elastic plate 15 by the limiting protrusion 2111 of the base 21. During the process of the transmission member 31 pushing the elastic plate 15 to move and separate the moving contact 13 from the stationary contact 14, the middle section 152 of the elastic plate 15 can abut against the first stop 21113, and the moving contact 13 can abut against the second stop 21111. This reduces the excessive deformation of the elastic plate 15 caused by the instantaneous impact force of the transmission member 31 when the moving contact 13 and the stationary contact 14 are separated, thereby ensuring the reliability of the pressure controller.
[0046] like Figure 7-9 As shown, the moving contact 13 is riveted to the second end 153. The moving contact 13 includes a protrusion 131, which is at least partially located above the second end 153. The protrusion 131 can abut against the second stop 21111. In the longitudinal direction of the pressure controller, the second stop 21111 is further away from the transmission member 31 than the first stop 21113, that is, the second stop 21111 is located above the first stop 21113. Thus, when the moving contact 13 separates from the stationary contact 14, the deformation amplitude of the elastic sheet 15 is reduced, and the reliability of the elastic sheet 15 is improved.
[0047] like Figure 7 As shown, when the moving contact 13 and the stationary contact 14 are in contact, the maximum longitudinal distance between the moving contact 13 and the second stop part 21111 in the pressure controller is defined as H2, which satisfies 0.5mm≤H2≤0.8mm. Thus, by limiting the displacement of the moving contact 13 through the limiting protrusion 2111, the swing amplitude of the moving contact 13 is reduced during the separation process of the moving contact 13 and the stationary contact 14, thereby reducing excessive deformation of the elastic sheet 15 caused by the instantaneous impact force of the transmission component 31, and ensuring the reliability of the elastic sheet 15.
[0048] As shown Figure 9 in the figure, when the moving contact 13 and the static contact 14 are in the separated state, the maximum distance between the middle section 152 and the first stop portion 21113 in the longitudinal direction of the pressure controller is defined as H3, and the maximum distance between the moving contact 13 and the second stop portion 21111 in the longitudinal direction of the pressure controller is defined as H4, and H4 < H3 is satisfied. Based on this, when the moving contact 13 and the static contact 14 are separated, the contact between the convex portion 131 and the second stop portion 21111 precedes the contact between the middle section 152 and the first stop portion 21113. Thus, when the middle section 152 contacts the first stop portion 21113, it is possible to prevent the moving contact 13 from still being in a swinging state due to the inertial force of the elastic piece 15, thereby causing the elastic piece 15 to be fractured at the contact portion with the first stop portion 21113, so as to ensure the reliability of the elastic piece 15.
[0049] As shown Figure 7 and Figure 10 in the figure, in this embodiment, the limiting convex portion 2111 includes a first convex portion 2111a and a second convex portion 2111b. The first convex portion 2111a protrudes from the end of the second convex portion 2111b toward the middle section 152 side. The first convex portion 2111a includes a first stop portion 21113, and the second convex portion 2111b includes a second stop portion 21111; the cover-shaped portion 211 is an injection molded part, and the first convex portion 2111a and the second convex portion 2111b are integrally formed with the cover-shaped portion 211. The above-mentioned first convex portion 2111a is an extension part of the second convex portion 2111b, and the limiting convex portion 2111 has relatively high structural strength and stiffness, so that the limiting convex portion 2111 can effectively withstand the impact from the transmission member 31, and further ensure the reliability of the elastic piece 15.
[0050] As an example, as shown Figure 7A in the figure, the limiting convex portion 2111 includes a first convex portion 2111a and a second convex portion 2111b. The first convex portion 2111a and the second convex portion 2111b are arranged at intervals in the transverse direction of the pressure controller. The first convex portion 2111a protrudes toward the middle section 152 side in the longitudinal direction of the pressure controller. The first convex portion 2111a includes a first stop portion 21113, and the second convex portion 2111b protrudes toward the moving contact 13 side in the longitudinal direction of the pressure controller. The second convex portion 2111b includes a second stop portion 21111; the cover-shaped portion 211 is an injection molded part, the cover-shaped portion 211 is integrally formed with the first convex portion 2111a, and the cover-shaped portion 211 is also integrally formed with the second convex portion 2111b. Since the limiting convex portion 2111 is provided with the first convex portion 2111a and the second convex portion 2111b at intervals in the transverse direction of the pressure controller, a cooling channel is formed between the first convex portion 2111a and the second convex portion 2111b when the base 21 is injection molded, which helps to improve the cooling efficiency of the limiting convex portion 2111.
[0051] like Figure 6-10 As shown, the limiting protrusion 2111 includes a first arc-shaped portion 21112 and a second arc-shaped portion 21114. The first arc-shaped portion 21112 includes a first stop portion 21113, and the second arc-shaped portion 21114 includes a second stop portion 21111. By using arc-shaped contact to reduce stress concentration, not only can the reliability and lifespan of the elastic sheet 15 be improved, but the risk of damage to the moving contact 13 can also be reduced.
[0052] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of protection of this application.
Claims
1. A pressure controller, characterized in that, The system includes a control component (1), a base component (2), and a transmission component (31). The base component (2) includes a first insert (22), a second insert (23), and a base (21). The base (21) includes a cover-like portion (211). The first insert (22) is limited or fixedly connected to the cover-like portion (211). The first insert (22) includes a first connecting portion (221). The second insert (23) is limited or fixedly connected to the cover-like portion (211). The second insert (23) includes a second connecting portion (231). The control component (1) includes a moving contact (13) and a stationary contact (24). The pressure controller includes a contact (14) and an elastic sheet (15), the elastic sheet (15) comprising a first end (151), a middle section (152) and a second end (153). In the longitudinal direction of the pressure controller, the middle section (152) is at least partially located between the cover-shaped part (211) and the transmission member (31). In the transverse direction of the pressure controller, the middle section (152) is located between the first end (151) and the second end (153). The first connecting part (221) is connected to the first end (151), and the second end (153) is connected to the moving contact (13). The cover-shaped portion (211) includes a downwardly protruding limiting protrusion (2111), the limiting protrusion (2111) includes a first stop portion (21113), the intermediate section portion (152) can abut against the first stop portion (21113), the moving contact (13) and the stationary contact (14) are in contact, the maximum distance between the intermediate section portion (152) and the first stop portion (21113) in the longitudinal direction of the pressure controller is defined as H1, then 0.5mm≤H1≤1mm is satisfied.
2. The pressure controller according to claim 1, characterized in that, In the longitudinal direction of the pressure controller, the limiting protrusion (2111) is located below the transmission member (31), the cross-section of the limiting protrusion (2111) is circular, and the diameter of the limiting protrusion (2111) is larger than the diameter of the transmission member (31).
3. A pressure controller, characterized in that, The system includes a control component (1), a base component (2), and a transmission component (31). The base component (2) includes a first insert (22), a second insert (23), and a base (21). The base (21) includes a cover-like portion (211). The first insert (22) is limited or fixedly connected to the cover-like portion (211). The first insert (22) includes a first connecting portion (221). The second insert (23) is limited or fixedly connected to the cover-like portion (211). The second insert (23) includes a second connecting portion (231). The control component (1) includes a moving contact (13). The pressure controller includes a stationary contact (14) and an elastic sheet (15). The elastic sheet (15) includes a first end (151), a middle section (152), and a second end (153). In the longitudinal direction of the pressure controller, the elastic sheet (15) is located between the cover-shaped part (211) and the transmission member (31). In the transverse direction of the pressure controller, the middle section (152) is located between the first end (151) and the second end (153). The first connecting part (221) is connected to the first end (151), and the second end (153) is connected to the moving contact (13). The cover-shaped portion (211) includes a downwardly protruding limiting protrusion (2111), the limiting protrusion (2111) includes a first stop portion (21113) and a second stop portion (21111), the second stop portion (21111) is located above the moving contact (13), the middle section portion (152) can abut against the first stop portion (21113), and the moving contact (13) can abut against the second stop portion (21111).
4. The pressure controller according to claim 3, characterized in that, The movable contact (13) is riveted to the second end (153). The movable contact (13) includes a protrusion (131), which is at least partially located above the second end (153). The protrusion (131) can abut against the second stop (21111). In the longitudinal direction of the pressure controller, the second stop (21111) is further away from the transmission member (31) than the first stop (21113).
5. The pressure controller according to claim 3 or 4, characterized in that, When the moving contact (13) and the stationary contact (14) are in contact, the maximum distance between the moving contact (13) and the second stop (21111) in the longitudinal direction of the pressure controller is defined as H2, which satisfies 0.5mm≤H2≤0.8mm.
6. The pressure controller according to any one of claims 3-5, characterized in that, When the moving contact (13) and the stationary contact (14) are separated, the maximum distance between the intermediate section (152) and the first stop (21113) in the longitudinal direction of the pressure controller is defined as H3, and the maximum distance between the moving contact (13) and the second stop (21111) in the longitudinal direction of the pressure controller is defined as H4, then H4 < H3.
7. The pressure controller according to any one of claims 3-6, characterized in that, The limiting protrusion (2111) includes a first protrusion (2111a) and a second protrusion (2111b). The first protrusion (2111a) and the second protrusion (2111b) are arranged laterally spaced on the pressure controller. The first protrusion (2111a) protrudes along the longitudinal direction of the pressure controller toward the middle section (152) and includes a first stop (21113). The second protrusion (2111b) protrudes along the longitudinal direction of the pressure controller toward the moving contact (13) and includes a second stop (21111). The cover-shaped part (211) is an injection molded part. The cover-shaped part (211) is integrally formed with the first protrusion (2111a) and the cover-shaped part (211) is also integrally formed with the second protrusion (2111b).
8. The pressure controller according to any one of claims 3-6, characterized in that, The limiting protrusion (2111) includes a first protrusion (2111a) and a second protrusion (2111b). The first protrusion (2111a) protrudes from the end of the second protrusion (2111b) toward the middle section (152). The first protrusion (2111a) includes a first stop (21113), and the second protrusion (2111b) includes a second stop (21111). The cover-shaped part (211) is an injection molded part, and the first protrusion (2111a) and the second protrusion (2111b) are integrally formed with the cover-shaped part (211).
9. The pressure controller according to any one of claims 3-8, characterized in that, The limiting protrusion (2111) includes a first arc-shaped portion (21112) and a second arc-shaped portion (21114). The first arc-shaped portion (21112) includes the first stop portion (21113), and the second arc-shaped portion (21114) includes the second stop portion (21111).
10. The pressure controller according to any one of claims 3-9, characterized in that, The system includes a transmission component (3) and an air box component (4). The air box component (4) includes a diaphragm (42) located below the transmission component (3). The transmission component (3) includes the transmission member (31) and a guide seat (32). The base (21) also includes a cylindrical portion (212) that extends downward from the outer edge of the cover portion (211). The guide seat (32) is limited or fixedly connected to the cylindrical portion (212). The guide seat (32) includes a guide hole (321). The transmission member (31) includes a third end (311) and a fourth end (312). The third end (311) can contact the intermediate section (152), and the fourth end (312) abuts against the diaphragm (42).