Screw cap of threaded diaphragm type automobile brake liquid storage tank
By designing a threaded diaphragm-type automobile brake fluid storage tank, the problem of liquid splashing is solved, and the dual functions of sealing and ventilation are realized, which are suitable for various automobile brake fluid storage tanks.
Patent Information
- Application Number
- CN202422092433.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-28
- Publication Date
- 2025-07-04
- Estimated Expiration
- 2034-08-28
AI Technical Summary
When the ventilating cover of the existing automobile brake liquid storage tank is large, liquid is prone to splash out from the ventilation holes, resulting in poor sealing performance.
A threaded diaphragm-type automobile brake fluid storage tank rotary cover is designed, including three structures: normally closed single-ring die type, normally closed double-ring die type and normally open diaphragm type. The sealing and ventilation functions are realized through the single-ring liquid storage tank rotary cover, the double-ring liquid storage tank rotary cover, and the liquid storage tank rotary cover are embedded in the sealing film and diaphragm card cover.
It effectively prevents liquid splashing, meets the sealing and ventilation performance requirements of automobile brake liquid storage tanks in different structures, and can be reused.
Smart Images
Figure CN223058984U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of braking systems, and specifically relates to a threaded diaphragm type screw cap for an automobile braking liquid storage tank. Background Art
[0002] When a braking liquid storage tank is used in an automobile, to ensure that the braking liquid can flow out naturally from the outlet at the lower part of the liquid storage tank, it is necessary to ensure that the internal and external pressures of the liquid storage tank are consistent. This requires an air passage that allows the inside and outside of the liquid storage tank to communicate. At the same time, when the liquid in the liquid storage tank fluctuates (during acceleration and deceleration), the liquid cannot splash outside the liquid storage tank through this passage.
[0003] The typical design of the ventilation cap of the liquid storage tank used in traditional motor vehicles: The cap is screwed onto the mouth of the liquid storage tank through threads. There is a ventilation hole on the cap, and there is a liquid retaining plate below the ventilation hole. There is a rubber ring between the cap and the liquid storage tank to seal the mouth of the liquid storage tank. Generally, it is not easy for the liquid to splash out through the ventilation hole. However, when the inclination angle of the liquid storage tank is relatively large, if the liquid fluctuates violently, the liquid may still splash out through the gap between the liquid retaining plate and the liquid storage tank and through the ventilation hole. Summary of the Invention
[0004] The utility model overcomes the deficiencies of the prior art and provides a solution for a threaded diaphragm type screw cap for an automobile braking liquid storage tank. In this solution, three structures can meet the sealing, ventilation and other performance requirements of automobile braking liquid storage tanks with different structures.
[0005] To achieve the above object, it is necessary to design a threaded diaphragm type screw cap for an automobile braking liquid storage tank, including a screw cap for the liquid storage tank and a sealing diaphragm. The characteristics are as follows: The screw cap for the automobile braking liquid storage tank is one of a normally closed single-ring diaphragm type screw cap for an automobile braking liquid storage tank, a normally closed double-ring diaphragm type screw cap for an automobile braking liquid storage tank, and an open diaphragm type screw cap for an automobile braking liquid storage tank;
[0006] The normally closed single-ring diaphragm type screw cap for an automobile braking liquid storage tank includes a single-ring screw cap for the liquid storage tank and a normally closed sealing diaphragm. The normally closed sealing diaphragm is embedded in the single-ring screw cap for the liquid storage tank;
[0007] The normally closed double-ring diaphragm type screw cap for an automobile braking liquid storage tank includes a double-ring screw cap for the liquid storage tank and a normally closed sealing diaphragm. The normally closed sealing diaphragm is embedded in the double-ring screw cap for the liquid storage tank;
[0008] The open diaphragm type screw cap for an automobile braking liquid storage tank includes a screw cap for the liquid storage tank, an annular sealing diaphragm, and a diaphragm clamping cover. The diaphragm clamping cover is embedded in the screw cap for the liquid storage tank, and an annular sealing diaphragm is sleeved on the diaphragm clamping cover.
[0009] The single-ring liquid storage tank screw cap described above is a cylindrical cap, and a single-ring structure is provided at the center inside the single-ring liquid storage tank screw cap. A single-ring ventilation groove is connected inside the single-ring structure and extends all the way to the edge of the single-ring liquid storage tank screw cap.
[0010] The normally closed sealing diaphragm described above is a cylindrical diaphragm structure. An air vent knife groove is provided in the middle of the normally closed sealing diaphragm, and an annular support structure is provided outside the air vent knife groove.
[0011] The double-ring liquid storage tank screw cap described above is a cylindrical cap, and a double-ring structure is provided at the center inside the double-ring liquid storage tank screw cap. A double-ring ventilation groove is connected inside the double-ring structure and extends all the way to the edge of the double-ring liquid storage tank screw cap.
[0012] The liquid storage tank screw cap described above is a cylindrical cap structure.
[0013] The annular sealing diaphragm described above is a circular diaphragm structure.
[0014] The diaphragm clamping cap described above is an "I"-shaped frustum structure. The diameter of the top of the diaphragm clamping cap is larger than the diameter of the bottom of the diaphragm clamping cap, and a conical groove is provided at the bottom of the diaphragm clamping cap.
[0015] Compared with the prior art, the present utility model provides a screw diaphragm type automobile brake liquid storage tank screw cap solution. The three structures can meet the sealing, ventilation and other performance requirements of automobile brake liquid storage tanks with different structures. Description of the Drawings
[0016] Figure 1 It is a cross-sectional view of the structure of the normally closed single-ring diaphragm type automobile brake liquid storage tank screw cap.
[0017] Figure 2 It is a cross-sectional view of the structure of the normally closed double-ring diaphragm type automobile brake liquid storage tank screw cap.
[0018] Figure 3 It is a cross-sectional view of the structure of the normally open diaphragm type automobile brake liquid storage tank screw cap.
[0019] Figure 4 It is a schematic diagram of the structure of the single-ring liquid storage tank screw cap.
[0020] Figure 5 It is a schematic diagram of the structure of the normally closed sealing diaphragm.
[0021] Figure 6 It is a schematic diagram of the structure of the double-ring liquid storage tank screw cap.
[0022] Figure 7 It is a schematic diagram of the structure of the annular sealing diaphragm.
[0023] Figure 8 It is a schematic diagram of the structure of the diaphragm clamping cap.
[0024] Figure 9 Schematic diagram of the gas flow direction of the rotary cap of an automotive brake fluid reservoir, which is a normally open diaphragm type.
[0025] See Figures 1 to 6 , 1 is the rotary cap of a single-ring fluid reservoir, 1-1 is the single-ring structure, 1-2 is the first gas path, 2 is the normally closed sealing diaphragm, 2-1 is the ventilation knife groove, 2-2 is the annular support structure, 3 is the rotary cap of a double-ring fluid reservoir, 3-1 is the double-ring structure, 3-2 is the second gas path, 4 is the rotary cap of the fluid reservoir, 5 is the annular sealing diaphragm, and 6 is the diaphragm retaining cap. Detailed implementation mode
[0026] The following further describes the present utility model with reference to the accompanying drawings.
[0027] As Figure 1 shown, it is a normally closed single-ring diaphragm type rotary cap of an automotive brake fluid reservoir, including the single-ring rotary cap 1 of the fluid reservoir and the normally closed sealing diaphragm 2. The single-ring rotary cap 1 of the fluid reservoir is embedded with the normally closed sealing diaphragm 2.
[0028] As Figure 4 shown, the single-ring rotary cap 1 of the fluid reservoir is a cylindrical cap, and a single-ring structure 1-1 is provided inside the middle of the single-ring rotary cap 1 of the fluid reservoir. A single-ring ventilation groove 1-2 is connected inside the single-ring structure 1-1, and the single-ring ventilation groove 1-2 extends all the way to the edge of the single-ring rotary cap 1 of the fluid reservoir.
[0029] As Figure 2 shown, it is a normally closed double-ring diaphragm type rotary cap of an automotive brake fluid reservoir, including the double-ring rotary cap 3 of the fluid reservoir and the normally closed sealing diaphragm 2. The double-ring rotary cap 3 of the fluid reservoir is embedded with the normally closed sealing diaphragm 2.
[0030] As Figure 6 shown, the double-ring rotary cap 3 of the fluid reservoir is a cylindrical cap, and a double-ring structure 3-1 is provided inside the middle of the double-ring rotary cap 3 of the fluid reservoir. A double-ring ventilation groove 3-2 is connected inside the double-ring structure 3-1, and the double-ring ventilation groove 3-2 extends all the way to the edge of the double-ring rotary cap 3 of the fluid reservoir.
[0031] As Figure 5 shown, the normally closed single-ring diaphragm type rotary cap of the automotive brake fluid reservoir and the normally closed double-ring diaphragm type rotary cap of the automotive brake fluid reservoir share the same type of normally closed sealing diaphragm 2. The normally closed sealing diaphragm 2 is a cylindrical diaphragm structure, and a ventilation knife groove 2-1 is provided in the middle of the normally closed sealing diaphragm 2, and an annular support structure 2-2 is provided outside the ventilation knife groove 2-1.
[0032] When there is no normal pressure difference inside and outside the liquid storage tank of the vehicle, the ventilation knife groove 2-1 on the normally closed sealing diaphragm 2 is in a closed state; when a pressure difference is generated inside and outside the liquid storage tank of the vehicle due to reasons such as liquid replenishment or temperature change, the ventilation knife groove 2-1 on the normally closed sealing diaphragm 2 opens, so as to realize the re-balancing of the air pressure inside and outside the liquid storage tank, and ensure the normal functions such as liquid replenishment of the vehicle liquid storage tank.
[0033] As Figure 3 shown, it is a normally open diaphragm type screw cap for the vehicle brake fluid reservoir, including a screw cap 4 for the liquid storage tank, an annular sealing diaphragm 5, and a diaphragm clamping cover 6. The screw cap 4 for the liquid storage tank is internally provided with a diaphragm clamping cover 6, and an annular sealing diaphragm 5 is sleeved on the diaphragm clamping cover 6. The screw cap 4 for the liquid storage tank is of a cylindrical cover structure.
[0034] As Figure 7 shown, the annular sealing diaphragm 5 is of a circular diaphragm structure.
[0035] As Figure 8 shown, the diaphragm clamping cover 6 is of an "I"-shaped frustum structure, the diameter of the top of the diaphragm clamping cover 6 is larger than the diameter of the bottom of the diaphragm clamping cover 6, and a conical groove is provided at the bottom of the diaphragm clamping cover 6.
[0036] As Figure 9 shown, the ventilation groove on the normally open diaphragm type screw cap for the vehicle brake fluid reservoir is always in a connected state during the whole working process.
[0037] The structure of the present utility model can well integrate ventilation, dust prevention and prevention of brake fluid leakage; it can meet the sealing, ventilation and other performance requirements of vehicle brake fluid reservoirs with different structures; the screw diaphragm type screw cap for the vehicle brake fluid reservoir can be reused.
Claims
1. A screw thread diaphragm type car brake fluid reservoir cap, comprising a reservoir cap and a sealing diaphragm, characterized in that: The described car brake fluid reservoir cap is one of the normally closed single-ring diaphragm type car brake fluid reservoir cap, the normally closed double-ring diaphragm type car brake fluid reservoir cap, and the normally open diaphragm type car brake fluid reservoir cap; The described normally closed single-ring diaphragm type car brake fluid reservoir cap includes a single-ring fluid reservoir cap (1) and a normally closed sealing diaphragm (2), and the normally closed sealing diaphragm (2) is embedded in the single-ring fluid reservoir cap (1); The described normally closed double-ring diaphragm type car brake fluid reservoir cap includes a double-ring fluid reservoir cap (3) and a normally closed sealing diaphragm (2), and the normally closed sealing diaphragm (2) is embedded in the double-ring fluid reservoir cap (3); The described normally open diaphragm type car brake fluid reservoir cap includes a fluid reservoir cap (4), an annular sealing diaphragm (5), and a diaphragm clamping cover (6). The fluid reservoir cap (4) has the diaphragm clamping cover (6) embedded therein, and the annular sealing diaphragm (5) is sleeved on the diaphragm clamping cover (6).
2. A screw thread diaphragm type car brake fluid reservoir cap according to claim 1, characterized in that: The described single-ring fluid reservoir cap (1) is a cylindrical cap, and a single-ring structure (1-1) is provided at the inner center of the single-ring fluid reservoir cap (1). A single-ring ventilation groove (1-2) is connected inside the single-ring structure (1-1), and the single-ring ventilation groove (1-2) extends all the way to the edge of the single-ring fluid reservoir cap (1).
3. A screw thread diaphragm type car brake fluid reservoir cap according to claim 1, characterized in that: The described normally closed sealing diaphragm (2) is a cylindrical diaphragm structure. An air ventilation knife groove (2-1) is provided in the middle of the normally closed sealing diaphragm (2), and an annular support structure (2-2) is provided outside the air ventilation knife groove (2-1).
4. A screw-thread diaphragm type car brake fluid reservoir cap according to claim 1, characterized in that: The described double-ring fluid reservoir cap (3) is a cylindrical cap, and a double-ring structure (3-1) is provided at the inner center of the double-ring fluid reservoir cap (3). A double-ring ventilation groove (3-2) is connected inside the double-ring structure (3-1), and the double-ring ventilation groove (3-2) extends all the way to the edge of the double-ring fluid reservoir cap (3).
5. A screw thread diaphragm type car brake fluid reservoir cap according to claim 1, characterized in that: The described fluid reservoir cap (4) is a cylindrical cap structure.
6. The screw thread diaphragm type car brake fluid reservoir cap according to claim 1, characterized in that: The described annular sealing diaphragm (5) is a circular diaphragm structure.
7. A screw-thread diaphragm type car brake fluid reservoir cap according to claim 1, characterized in that: The described diaphragm clamping cover (6) is an "I"-shaped frustum structure. The diameter of the top of the diaphragm clamping cover (6) is larger than the diameter of the bottom of the diaphragm clamping cover (6), and a conical groove is provided at the bottom of the diaphragm clamping cover (6).