Ventilation component and switch

Abstract

Ventilation component, characterized in that the ventilation component has a waterproof breathable film (1) and a ventilation plug (2) for connection to a ventilation hole (51) of a switch, wherein the ventilation plug (2) is provided with an air pressure equalization through-hole (21) and the waterproof breathable film (1) is configured to be connected to the ventilation plug (2) and to close the air pressure equalization through-hole (21).

Description

Technical field

[0001] The utility model relates to the technical field of switches, specifically a ventilation component and a switch. Technical background

[0002] The snap-action switch is a limit switch that requires external pressure on the push rod to actuate the switching of the contacts. The protection rating of the plastic-sealed snap-action switch can reach IP67. The sealing ring in the snap-action switch is a deformable component that serves two purposes: it seals the hole on the push rod of the snap-action switch, ensuring the switch meets the protection rating requirements, and it allows the telescopic movement of the push rod to function. Therefore, the deformability of the sealing ring is a crucial factor in the performance of the snap-action switch. However, when the protection rating of the snap-action switch reaches IP67 or higher, changes in altitude create an air pressure difference between the inside and outside of the snap-action switch. If this air pressure difference reaches a certain value, the sealing ring can no longer deform.The inability of the sealing ring to deform means that the push rod can no longer be pressed and driven, and ultimately the contacts of the snap switch can no longer switch. To solve the aforementioned technical problems, the prior art offers a solution in which, as in [reference]... Fig. As shown in Figure 10, a ventilation hole 1' has been added to the outer shell of the snap switch, and this ventilation hole 1' is sealed with a steel ball 2'. The adjusting gap between the steel ball 2' and the ventilation hole 1' serves to ensure the required degree of protection of the snap switch. At the same time, the adjusting gap also serves to equalize the air pressure difference inside and outside the snap switch through ventilation, allowing the contacts of the snap switch to switch normally. However, in the above technical solution, the adjusting gap between the steel ball 2' and the ventilation hole 1' is difficult to control, which can easily lead to problems such as the snap switch not meeting the standard for the degree of protection or not being properly ventilated. Content of the utility model

[0003] In view of the shortcomings of the prior art, the present utility model offers a ventilation component that maintains the required level of protection while simultaneously being able to effectively equalize the air pressure inside and outside the switch.

[0004] To achieve the aforementioned purpose, the present utility model is implemented through the following technical solutions: A ventilation component comprising a waterproof breathable film and a ventilation plug for tight connection to the ventilation hole of a switch, wherein the ventilation plug is provided with an air pressure equalization through-hole, wherein the waterproof breathable film is configured to be connected to the ventilation plug and to seal the air pressure equalization through-hole.

[0005] In a further development, it is provided that the ventilation plug has an embedding end which is embedded in the ventilation hole, wherein a stepped groove is formed at the embedding end, wherein the stepped groove is in communication with the air pressure equalization through-hole and the waterproof breathable film is firmly connected to the bottom surface of the stepped groove.

[0006] In a further training, it is provided that a ridge is provided on the bottom surface of the step groove, whereby the ridge is connected to the waterproof breathable film by hot riveting, welding or gluing.

[0007] In a further training course, it is stipulated that the ventilation plug is configured so that it can be tightly connected to the ventilation hole of the switch by press fit, welding or gluing.

[0008] In a training course, it is stipulated that the ventilation plug is made of plastic.

[0009] In a further development, the ventilation plug is provided with an embedding end that is embedded in the ventilation hole, and the waterproof breathable film is firmly connected to the end face of the embedding end. The outer diameter of the waterproof breathable film is smaller than the outer diameter of the embedding end of the ventilation plug in order to form an annular space between the end face of the embedding end of the ventilation plug and the bottom surface of the ventilation hole. Preferably, a ridge is provided on the end face of the embedding end of the ventilation plug, which is connected to the waterproof breathable film by hot riveting, welding, or bonding.

[0010] In a further training course, it is planned that a protective structure will be provided in the air pressure equalization through-hole to prevent external foreign bodies from entering through the air pressure equalization through-hole and puncturing the waterproof breathable film.

[0011] In a training course, it is stipulated that the protective structure is cross-shaped.

[0012] Based on the same inventive concept, the present utility model also provides a switch comprising a housing, a mechanism with a ventilation hole and the ventilation component mentioned above, wherein the housing is provided with an internal mounting space, the mechanism is mounted in the mounting space of the housing and the ventilation component is mounted on the ventilation hole of the mechanism.

[0013] In a further training course, it is planned that the mounting space of the housing is filled with sealing adhesive to seal the mounting gap between the mechanism and the housing, so that only the ventilation hole of the mechanism is exposed to the housing.

[0014] The above technical solution has the following advantages or positive effects.

[0015] In the ventilation component and switch described in the present utility model, a ventilation plug is sealed and mounted in the switch's ventilation hole. An air pressure equalization through-hole is provided on the ventilation plug, and a waterproof, breathable film is connected to the ventilation plug to seal this through-hole, allowing air to enter the switch. This equalizes the air pressure difference between the inside and outside of the switch, enabling the switch contacts to switch normally and preventing the problem of air pressure differences caused by changes in altitude. Simultaneously, by utilizing the air-permeable and waterproof properties of the waterproof, breathable film, the switch also meets the protection level requirements.If the mounting space of the housing is filled with sealant to seal the mounting gap between the mechanism and the housing, the stepped groove can also block the capillary action of the adhesive, preventing the adhesive from reaching the waterproof breathable film, which can lead to a ventilation failure of the switch. Description of the characters Fig. Figure 1 is a schematic structural perspective representation of the ventilation plug according to a first embodiment of the present utility model. Fig. Figure 2 is a structural sectional view of the ventilation plug (provided with a rib) according to a first embodiment of the present utility model. Fig. Figure 3 is a structural sectional view of the assembly of the ventilation plug and the waterproof breathable film according to a first embodiment of the present utility model. Fig. Figure 4 is a structural partial sectional view of the assembly of the ventilation component and the mechanism according to a first embodiment of the present utility model. Fig. Figure 5 is a structural three-dimensional representation of the assembly of the ventilation component and the switch according to a first embodiment of the present utility model. Fig. Figure 6 is a schematic structural exploded view of the assembly of the ventilation component and the switch according to a first embodiment of the present utility model. Fig. Figure 7 is a structural sectional view of the assembly of the ventilation plug and the waterproof breathable film according to a second embodiment of the present utility model. Fig. Figure 8 is a structural sectional view of the ventilation plug (provided with a rib) according to a second embodiment of the present utility model. Fig. Figure 9 is a structural partial sectional view of the assembly of the ventilation component and the mechanism according to a second embodiment of the present utility model. Fig. Figure 10 is a schematic structural representation of a switch according to the state of the art. Description of the reference symbols:

[0016] 1. Waterproof breathable film, 2. Ventilation plug, 3. Protective structure, 4. Bridge, 5. Mechanism, 6. Housing, 21. Air pressure equalization through hole, 22. Step groove, 51. Ventilation hole, A. Annular space. Detailed description

[0017] The present utility model will be described in more detail below in conjunction with the attached drawings and examples of embodiments.

[0018] In the description of the present utility model, it is understood that the orientations or positional relationships indicated by the terms "Top", "Bottom", "Front", "Back", "Left", "Right", "Roof", "Floor", "Inside", "Outside" and the like are the orientations or positional relationships shown based on the drawings and serve only for the convenience of describing the present utility model and to simplify the description, rather than indicating or implying that the said device or element must have a particular orientation or orientation or be designed and operated in a particular orientation, and should therefore not be construed as a limitation of the present utility model. First embodiment

[0019] With reference to the Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5 to Fig. Figure 6 describes an embodiment of the present utility model providing a ventilation component comprising a waterproof breathable film 1 and a ventilation plug 2 for a tight connection to a ventilation hole 51 of a switch. The ventilation plug 2 has a pressure equalization through-hole 21, and the waterproof breathable film 1 is firmly connected to the ventilation plug 2, blocking the pressure equalization through-hole 21. In this embodiment, the ventilation plug 2 is sealed and mounted in the ventilation hole 51 of the switch, allowing air to flow through the pressure equalization through-hole 21 on the ventilation plug 2 and through the waterproof breathable film 1 into the ventilation hole 51 and ultimately into the switch.This equalizes the air pressure difference between the inside and outside of the switch, allowing the switch contacts to switch normally and preventing the problem of air pressure differences inside and outside the switch due to changes in altitude. At the same time, by utilizing the air-permeable and waterproof properties of the waterproof breathable film 1, the switch also meets the protection level requirements.

[0020] With reference to Fig. 1, Fig. 2, Fig. 3 to Fig. 4 In a preferred embodiment, the ventilation plug 2 has an embedding end which is embedded in the ventilation hole 51, wherein the embedding end is formed with a stepped groove 22, the stepped groove 22 is in communication with the air pressure equalization through-hole 21, and the waterproof breathable film 1 is firmly connected to the bottom surface of the stepped groove 22.

[0021] With reference to Fig. 1, Fig. 2, Fig. 3, Fig. 4 to Fig. In a preferred embodiment, a web 4 is provided on the bottom surface of the step groove 22. The web 4 is connected to the waterproof breathable film 1 by hot riveting, welding, or bonding. The web 4 facilitates the connection between the waterproof breathable film 1 and the ventilation plug 2. However, a person skilled in the art should understand that in other embodiments, the waterproof breathable film 1 can also be firmly connected to the bottom surface of the step groove 22 in a different way and is not limited to the specific implementation disclosed in this embodiment. As in the Fig. 4 and Fig. As shown in Figure 5, the stepped groove 22 can block the capillary action of the adhesive when the mounting space of the housing is filled with the sealant to close the mounting gap between the mechanism and the housing. This prevents the adhesive from reaching the waterproof breathable film 1 and ensures proper ventilation of the switch.

[0022] With reference to Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5 to Fig. In a preferred embodiment, the vent plug 2 is configured to be tightly connected to the vent hole 51 of the switch by press fit, welding, or bonding. Preferably, the vent plug 2 and the vent hole 51 of the switch are connected by press fit, resulting in a tighter and more stable connection. However, those skilled in the art should understand that in other embodiments, other methods of fitting the vent plug 2 and the vent hole 51 of the switch may be used, as long as the purpose of sealing and a stable connection is achieved, and this is not limited to the specific implementations disclosed in this embodiment.

[0023] With reference to Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5 to Fig. In a preferred embodiment, as described in Figure 6, the vent plug 2 is made of plastic material, and the plastic vent plug 2 provides a tighter seal between the vent plug 2 and the vent hole 51 of the switch. However, it is clear to those skilled in the art that the vent plug 2 can also be made of other materials in other embodiments and is not limited to the specific implementations disclosed in this embodiment. For example, it can also be made of rubber or metal.

[0024] With reference to Fig. 1, Fig. 2 to Fig. In a preferred embodiment, a protective structure 3 is provided in the air pressure equalization through-hole 21 to prevent external foreign bodies from passing through the air pressure equalization through-hole 21 and puncturing the waterproof breathable film 1. Preferably, the protective structure 3 is arranged in a cross shape, which reduces the production costs of the protective structure 3. However, those skilled in the art should understand that in other embodiments the protective structure 3 can also be mesh-shaped and is not limited to the specific implementations disclosed in this embodiment.

[0025] With reference to the Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5 to Fig. Figure 6 further provides an embodiment of the present utility model, a switch comprising a housing 6, a mechanism 5 with a ventilation hole 51 and the ventilation component mentioned above, wherein the housing 6 has an internal mounting space, the mechanism 5 is appropriately embedded in the mounting space of the housing 6 and the ventilation component is appropriately mounted on the ventilation hole 51 of the mechanism 5 of the switch.

[0026] With reference to Fig. 5 and Fig. In a preferred embodiment, the mounting space of the housing 6 is filled with sealant to seal the mounting gap between the mechanism 5 and the housing 6, so that only the ventilation hole 51 of the mechanism 5 is exposed to the housing 6. Simultaneously, a ventilation component with waterproof and breathable properties is attached to the ventilation hole 51, so that the relevant protection requirements are met and the effect of equalizing the internal and external air pressure of the mechanism 5 can be achieved. Second embodiment

[0027] With reference to Fig. 7, Fig. 8 to Fig.9 The only difference between this embodiment and the first embodiment is that the waterproof breathable film 1 is configured to be firmly connected to a front surface at one end of the ventilation plug 2.Preferably, the waterproof breathable film 1 is firmly connected to the end face at the embedding end of the vent plug 2 to block the pressure equalization through-hole 21, and the outer diameter of the waterproof breathable film 1 is configured to be smaller than the outer diameter of the embedding end of the vent plug 2 in order to form an annular space A between the end face of the embedding end of the vent plug 2 and the bottom face of the vent hole 51. This space A corresponds to the outer circumference of the waterproof breathable film 1 and serves to block the capillary action of the adhesive and prevent the adhesive from reaching the waterproof breathable film 1. Simultaneously, a ridge 4 is also provided on the end face of the embedding end of the vent plug 2, which can be connected to the waterproof breathable film 1 by hot riveting, welding, or gluing.

[0028] The foregoing embodiments serve only to illustrate the technical solutions of the present utility model, not to limit them. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that they may still modify the technical solutions recorded in the foregoing embodiments or make equivalent substitutions to some of the technical features. However, these modifications or substitutions do not result in the corresponding technical solutions deviating from the spirit and scope of the technical solutions of the embodiments of the utility model. Therefore, all other embodiments that are achieved by those skilled in the art in this field without creative work fall within the scope of protection of the utility model.

Claims

[1] Ventilation component, characterized by , that the ventilation component has a waterproof breathable film (1) and a ventilation plug (2) for connection to a ventilation hole (51) of a switch, wherein the ventilation plug (2) is provided with an air pressure equalization through-hole (21) and the waterproof breathable film (1) is configured to be connected to the ventilation plug (2) and to seal the air pressure equalization through-hole (21). [2] Ventilation component according to claim 1, characterized by , that the ventilation plug (2) has an embedding end which is embedded in the ventilation hole (51), wherein a step groove (22) is formed at the embedding end, wherein the step groove (22) communicates with the air pressure equalization through hole (21) and the waterproof breathable film (1) is firmly connected to the bottom surface of the step groove (22). [3] Ventilation component according to claim 2, characterized by, that a rib (4) is provided on the bottom surface of the step groove (22), wherein the rib (4) is connected to the waterproof breathable film (1) by hot riveting, welding or gluing. [4] Ventilation component according to claim 1, characterized by , that the vent plug (2) is configured to be tightly connected to the vent hole (51) of the switch by press fit, welding or gluing. [5] Ventilation component according to claim 1, characterized by, that the vent plug (2) has an embedding end which is embedded in the vent hole (51), and the waterproof breathable film (1) is firmly connected to the end face of the embedding end, wherein the outer diameter of the waterproof breathable film (1) is smaller than the outer diameter of the embedding end of the vent plug (2) in order to form an annular space space (A) between the end face of the embedding end of the vent plug (2) and the bottom face of the vent hole (51). [6] Ventilation component according to claim 5, characterized by , that a ridge (4) is provided on the end face of the embedding end of the ventilation plug (2) which is connected to the waterproof breathable film (1) by hot riveting, welding or gluing. [7] Ventilation component according to any one of claims 1 to 6, characterized by, that a protective structure (3) is provided in the air pressure equalization through hole (21) to prevent external foreign bodies from passing through the air pressure equalization through hole (21) and puncturing the waterproof breathable film (1). [8] Ventilation component according to claim 7, characterized by , that the protective structure (3) is cross-shaped or grid-shaped. [9] Switches, characterized by , that the switch comprises a housing (6), a mechanism (5) provided with a ventilation hole (51) and a ventilation component according to one of claims 1 to 8, wherein the housing (6) is provided inside with a mounting space, wherein the mechanism (5) is mounted in the mounting space of the housing (6) and the ventilation component is mounted on the ventilation hole (51) of the mechanism (5). [10] Switch according to claim 9, characterized by, that the mounting space of the housing (6) is filled with sealant to seal the mounting gap between the mechanism (5) and the housing (6), so that only the ventilation hole (51) of the mechanism (5) is exposed to the housing (6).

Images