Ventilation assembly and switch
By using a combination of waterproof and breathable membrane and breathable plug in the quick-acting switch, the problem of contact failure due to air pressure difference is solved, achieving both air pressure balance and protection level in high-altitude areas, ensuring normal operation of the switch.
Patent Information
- Application Number
- CN202422585505.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-25
- Publication Date
- 2025-11-21
- Estimated Expiration
- 2034-10-25
AI Technical Summary
When used in high-altitude areas, the pressure difference prevents the sealing ring from deforming, which prevents the push rod from being pressed and driven, and the contacts cannot be switched. Existing technology, which uses the gap between the vent and the steel ball, cannot simultaneously meet the requirements of protection level and air pressure balance.
It adopts a combination of waterproof and breathable membrane and breathable plug. The breathable plug has air pressure balance through hole, which is sealed by waterproof and breathable membrane. Combined with sealant to fill the gap between the core and the shell, it achieves both air pressure balance and protection level.
It achieves pressure balance between the inside and outside of the switch in high-altitude areas, ensuring normal contact switching, while meeting the protection level requirements and avoiding problems such as air permeability failure and reduced protection level.
Smart Images
Figure CN223582837U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to a switch technical field, concretely relates to a ventilation assembly and switch. BACKGROUND
[0002] The snap switch is a kind of travel switch, need by external pressurization push rod as drive to make its contact switch, the protection level of plastic package type snap switch can reach IP67, the sealing ring in snap switch is as a deformable part, it can be used to close the hole of push rod on snap switch to make product reach protection level requirement, it can also be guaranteed by deformation to push rod telescopic movement, therefore, the deformability of sealing ring is important factor to guarantee the performance of snap switch.But when the protection level of snap switch reaches IP67 and above, due to the change of altitude, the internal and external pressure difference of snap switch is generated, when the pressure difference reaches certain value, it cannot be deformed that sealing ring, it will further cause push rod to be unable to be pressed drive, eventually makes the contact of snap switch unable to switch.In order to solve the above technical problem, the prior art provides a kind of solution, please refer to the attached Figure 10 Increase a ventilation hole 1' on the shell of snap switch, and use steel ball 2' to block ventilation hole 1', utilize the cooperation gap of steel ball 2' and ventilation hole 1' to make snap switch reach the protection level required, and the cooperation gap can also be ventilated to balance the pressure difference of internal and external of snap switch product, so that the contact of snap switch can be normally switched, but the cooperation gap control of steel ball 2' and ventilation hole 1' in the above technical scheme is difficult, it is easy to cause that the protection level of snap switch cannot reach standard or cannot ventilate. UTILITY MODEL CONTENTS
[0003] In view of the deficiencies of the prior art, the utility model provides a kind of ventilation assembly, installs waterproof ventilation membrane at the ventilation hole of switch using ventilation plug, so that it can be well balanced that the air pressure inside and outside switch under the premise of meeting the protection level.
[0004] To achieve the above object, the utility model is realized by the following technical scheme:
[0005] A kind of ventilation assembly, including waterproof ventilation membrane and the ventilation plug for being sealed with the ventilation hole of switch Connection, ventilation plug is set with air pressure balance through hole, waterproof ventilation membrane is configured to be connected with ventilation plug and block air pressure balance through hole.
[0006] Further, air pressure balance through hole is formed with step groove at the embedded end corresponding ventilation hole, waterproof ventilation membrane is fixedly connected at the step surface of step groove.
[0007] Further, convex rib is provided on the step surface of step groove, and the convex rib is connected together with the waterproof ventilation membrane by hot riveting or welding or gluing.
[0008] Further, the air permeable plug is configured to be sealingly connected to the air permeable hole of the switch by interference fit or welding or gluing.
[0009] Further, the air permeable plug is made of plastic material.
[0010] Further, the waterproof air permeable film is fixedly connected to the end face of the embedded end of the air permeable plug; preferably, the waterproof air permeable film is fixedly connected to the embedded end face of the air permeable plug to block the air pressure balance through hole, and the outer diameter size of the waterproof air permeable film is configured to be smaller than the outer diameter size of the embedded end of the air permeable plug, so that an annular spacing space corresponding to the outer periphery of the waterproof air permeable film is formed between the embedded end face of the air permeable plug and the bottom face of the air permeable hole; preferably, a protruding rib is arranged on the embedded end face of the air permeable plug, and the protruding rib is connected to the waterproof air permeable film by hot riveting or welding or gluing.
[0011] Further, the air pressure balance through hole is provided with a protective structure for preventing external foreign matters from piercing the waterproof air permeable film through the air pressure balance through hole.
[0012] Further, the protective structure is in the shape of a cross, a net or a small hole.
[0013] Based on the same inventive concept, the utility model also provides a switch, which comprises a shell, a movement provided with an air permeable hole and the air permeable assembly, wherein the shell is internally provided with a mounting cavity, the movement is adaptively embedded and mounted in the mounting cavity of the shell, and the air permeable assembly is correspondingly mounted at the air permeable hole of the movement of the switch.
[0014] Further, the mounting cavity of the shell is filled with sealing glue to close the assembly gap between the movement and the shell, and only the air permeable hole of the movement is exposed relative to the shell.
[0015] The above technical solution has the following advantages or beneficial effects:
[0016] In the air permeable assembly and the switch, the air permeable plug is sealingly mounted in the air permeable hole of the switch, the air pressure balance through hole is arranged on the air permeable plug, the waterproof air permeable film is connected to the air permeable plug to block the air pressure balance through hole, gas can enter the switch to balance the pressure difference between the inside and outside of the switch, the contact of the switch can be normally switched, and the problem of air pressure difference of the switch caused by altitude change is avoided. Meanwhile, the waterproof air permeable film has the characteristics of air permeability and water resistance, and the switch meets the requirements of the protection level. In addition, when the mounting cavity of the shell is filled with sealing glue to close the assembly gap between the movement and the shell, the stepped groove can block the capillary action of the glue, and the glue is prevented from climbing to the waterproof air permeable film to cause the problem of air permeability failure of the switch. BRIEF DESCRIPTION OF DRAWINGS
[0017] Figure 1 is a three-dimensional structure schematic diagram of the air permeable plug of the utility model embodiment one.
[0018] Figure 2 It is the structure section view of the air permeable plug (setting the convex rib) of the embodiment one of the utility model.
[0019] Figure 3 It is the assembly structure section view of the air permeable plug and waterproof air permeable film of the embodiment one of the utility model.
[0020] Figure 4 It is the assembly structure partial section view of the air permeable assembly and the movement of the embodiment one of the utility model.
[0021] Figure 5 It is the assembly structure perspective view of the air permeable assembly and the switch of the embodiment one of the utility model.
[0022] Figure 6 It is the assembly structure exploded view of the air permeable assembly and the switch of the embodiment one of the utility model.
[0023] Figure 7 It is the assembly structure section view of the air permeable plug and waterproof air permeable film of the embodiment two of the utility model.
[0024] Figure 8 It is the structure section view of the air permeable plug (setting the convex rib) of the embodiment two of the utility model.
[0025] Figure 9 It is the assembly structure partial section view of the air permeable assembly and the movement of the embodiment two of the utility model.
[0026] Figure 10 It is the structure schematic view of the switch of prior art.
[0027] Label explanation:
[0028] 1, waterproof air permeable film, 2, air permeable plug, 3, protective structure, 4, convex rib, 5, movement, 6, shell, 21, air pressure balance through hole, 22, step groove, 51, air hole, A, annular interval space. Specific implementation
[0029] The utility model will be further described below in combination with the drawings and embodiments.
[0030] In the description of the utility model, it is understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, therefore it cannot be understood as a limitation on the utility model.
[0031] Embodiment one
[0032] Please refer to the attached drawings Figure 1 to the attached drawings Figure 6 , an embodiment of the utility model provides a kind of ventilation assembly, including waterproof breathable membrane 1 and the ventilation plug 2 for being connected with the sealing of switch ventilation hole 51, ventilation plug 2 is equipped with air pressure balance through hole 21, waterproof breathable membrane 1 is fixedly connected with ventilation plug 2 and blocks air pressure balance through hole 21.In this embodiment, by sealing installation ventilation plug 2 in the ventilation hole 51 of switch, so that gas can pass through air pressure balance through hole 21 on ventilation plug 2 via waterproof breathable membrane 1 into ventilation hole 51, finally into switch, to balance the pressure difference inside and outside switch, make the contact of switch can be normally switched, avoid the problem that switch produces air pressure difference due to altitude change.Meanwhile, using the characteristics of waterproof breathable membrane 1 ventilation not water, also make switch reach the requirement of protection level.
[0033] Please refer to the attached drawings Figure 1 to the attached drawings Figure 4 , in one preferable embodiment, air pressure balance through hole 21 is formed with step groove 22 at the end corresponding to the embedded end of ventilation hole 51, and waterproof breathable membrane 1 is fixedly connected to the step surface of step groove 22.
[0034] Please refer to the attached drawings Figure 1 to the attached drawings Figure 5 , in one preferable embodiment, convex rib 4 is arranged on the step surface of step groove 22, and convex rib 4 is connected to waterproof breathable membrane 1 by hot riveting, welding or gluing, which facilitates the connection of waterproof breathable membrane 1 and ventilation plug 2.However, those skilled in the art should understand that, in other embodiments, waterproof breathable membrane 1 can also be fixedly connected to the step surface of step groove 22 in other ways, and is not limited to the specific embodiments disclosed in the present embodiment. Figure 4 and Figure 5 When sealant is filled in the mounting cavity of the shell to close the assembly gap between the movement and the shell, step groove 22 can block the capillary action of the glue, so as to avoid the problem that the glue climbs onto waterproof breathable membrane 1 and causes ventilation failure of the switch.
[0035] Please refer to the attached drawings Figure 1 to the attached drawings Figure 6 , in one preferable embodiment, ventilation plug 2 is configured to be sealingly connected to the ventilation hole 51 of the switch by interference fit, welding or gluing.Preferably, interference fit is adopted between ventilation plug 2 and the ventilation hole 51 of the switch, so that the connection between ventilation plug 2 and the ventilation hole 51 is more firm and stable.However, those skilled in the art should understand that, in other embodiments, other fitting methods can also be adopted between ventilation plug 2 and the ventilation hole 51 of the switch, as long as the purpose of sealing and stable connection is achieved, and the specific embodiments disclosed in the present embodiment are not limited.
[0036] Please refer to the attached Figure 1 to the attached Figure 6 In one preferred embodiment, the vent plug 2 is made of plastic material, which can provide a higher sealing between the vent plug 2 and the vent hole 51 of the switch. However, those skilled in the art should understand that in other embodiments, the vent plug 2 can also be made of other materials, and is not limited to the specific embodiments disclosed in the present embodiment, for example, it can also be made of rubber material or metal material.
[0037] Please refer to the attached Figure 1 to the attached Figure 3 In one preferred embodiment, the gas pressure balance through hole 21 is provided with a protective structure 3 for preventing external foreign matter from penetrating through the gas pressure balance through hole 21 and puncturing the waterproof and breathable film 1. Preferably, the protective structure 3 is arranged in a cross shape, which reduces the manufacturing cost of the protective structure 3. However, those skilled in the art should understand that in other embodiments, the protective structure 3 can also be in a mesh or small hole shape, and is not limited to the specific embodiments disclosed in the present embodiment.
[0038] Please refer to the attached Figure 1 to the attached Figure 6 In one embodiment of the present utility model, a switch is also provided, which comprises a shell 6, a movement 5 provided with a vent hole 51, and the above-mentioned vent assembly. The shell 6 is internally provided with a mounting cavity, the movement 5 is adaptively embedded and mounted in the mounting cavity of the shell 6, and the vent assembly is correspondingly mounted at the vent hole 51 of the movement 5 of the switch.
[0039] Please refer to the attached Figure 5 , the attached Figure 6 In one preferred embodiment, the mounting cavity of the shell 6 is filled with sealing glue to close the assembly gap between the movement 5 and the shell 6, and only the vent hole 51 of the movement 5 is exposed relative to the shell 6. At the same time, the vent assembly with waterproof and breathable performance is installed at the vent hole 51. In this way, the corresponding protection level requirement can be met, and the function of balancing the gas pressure inside and outside the movement 5 can be realized.
[0040] Embodiment two
[0041] Please refer to the attached Figure 7 to the attached Figure 9The difference between the embodiment and the embodiment one is that the waterproof and breathable film 1 is fixedly connected to one end surface of the breathable plug 2; preferably, the waterproof and breathable film 1 is fixedly connected to the embedded end surface of the breathable plug 2 to block the air pressure balance through hole 21, and the outer diameter size of the waterproof and breathable film 1 is configured to be smaller than the outer diameter size of the embedded end of the breathable plug 2, so that an annular spacing space A corresponding to the outer periphery of the waterproof and breathable film 1 is formed between the embedded end surface of the breathable plug 2 and the bottom surface of the breathable hole 51, so as to block the capillary action of the glue and avoid the glue from climbing onto the waterproof and breathable film 1. Meanwhile, the embedded end surface of the breathable plug 2 is also provided with a convex rib 4, which is used for hot riveting or welding or gluing the waterproof and breathable film 1 together.
[0042] The above is only used to illustrate the technical solutions of the present application, but not limit it; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacements for part of the technical features; and these modifications or replacements do not make the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application, therefore, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the present application.
Claims
1. A vent assembly, characterized by: The waterproof and breathable membrane (1) is connected with the air vent plug (2) and blocks the air pressure balance through hole (21).
2. The vent assembly of claim 1, wherein: The air pressure balance through hole (21) is formed with a stepped groove (22) at the embedded end corresponding to the air vent hole (51), and the waterproof and breathable membrane (1) is fixedly connected to the stepped surface of the stepped groove (22).
3. The vent assembly of claim 2, wherein: The stepped groove (22) is provided with a convex rib (4) which is hot riveted, welded or glued together with the waterproof and breathable membrane (1).
4. The vent assembly of claim 1, wherein: The air vent plug (2) is connected to the air vent hole (51) of the switch by interference fit or welding or gluing.
5. The vent assembly of claim 1, wherein: The waterproof and breathable membrane (1) is fixedly connected to one end surface of the air vent plug (2).
6. The vent assembly of claim 5, wherein: The waterproof and breathable membrane (1) is fixedly connected to the embedded end surface of the air vent plug (2) to block the air pressure balance through hole (21), and the outer diameter size of the waterproof and breathable membrane (1) is configured to be smaller than the outer diameter size of the embedded end of the air vent plug (2), so that an annular spacing space (A) corresponding to the outer periphery of the waterproof and breathable membrane (1) is formed between the embedded end surface of the air vent plug (2) and the bottom surface of the air vent hole (51).
7. The vent assembly of claim 6, wherein: The embedded end surface of the air vent plug (2) is provided with a convex rib (4) which is hot riveted, welded or glued together with the waterproof and breathable membrane (1).
8. The vent assembly of any one of claims 2 to 7, wherein: The air pressure balance through hole (21) is provided with a protective structure (3) for preventing external foreign matter from piercing the waterproof and breathable membrane (1) through the air pressure balance through hole (21).
9. The vent assembly of claim 8, wherein: The protective structure (3) is in the shape of a cross, a grid or a small hole.
10. A switch, characterized by: The waterproof and breathable membrane (1) is connected with the air vent plug (2) and blocks the air pressure balance through hole (21).
11. The switch of claim 10, wherein: The air pressure balance through hole (21) is formed with a stepped groove (22) at the embedded end corresponding to the air vent hole (51), and the waterproof and breathable membrane (1) is fixedly connected to the stepped surface of the stepped groove (22). The stepped groove (22) is provided with a convex rib (4) which is hot riveted, welded or glued together with the waterproof and breathable membrane (1). The air vent plug (2) is connected to the air vent hole (51) of the switch by interference fit or welding or gluing. The waterproof and breathable membrane (1) is fixedly connected to one end surface of the air vent plug (2). The waterproof and breathable membrane (1) is fixedly connected to the embedded end surface of the air vent plug (2) to block the air pressure balance through hole (21), and the outer diameter size of the waterproof and breathable membrane (1) is configured to be smaller than the outer diameter size of the embedded end of the air vent plug (2), so that an annular spacing space (A) corresponding to the outer periphery of the waterproof and breathable membrane (1) is formed between the embedded end surface of the air vent plug (2) and the bottom surface of the air vent hole (51). The embedded end surface of the air vent plug (2) is provided with a convex rib (4) which is hot riveted, welded or glued together with the waterproof and breathable membrane (1). The air pressure balance through hole (21) is provided with a protective structure (3) for preventing external foreign matter from piercing the waterproof and breathable membrane (1) through the air pressure balance through hole (21). The protective structure (3) is in the shape of a cross, a grid or a small hole. The waterproof and breathable membrane (1) is connected with the air vent plug (2) and blocks the air pressure balance through hole (21). The air pressure balance through hole (21) is formed with a stepped groove (22) at the embedded end corresponding to the air vent hole (51), and the waterproof and breathable membrane (1) is fixedly connected to the stepped surface of the stepped groove (22). The stepped groove (22) is provided with a convex rib (4) which is hot riveted, welded or glued together with the waterproof and breathable membrane (1). The air vent plug (2) is connected to the air vent hole (51) of the switch by interference fit or welding or gluing. The waterproof and breathable membrane (1) is fixedly connected to one end surface of the air vent plug (2).