Waterproof seat pressure switch

Abstract

The utility model relates to pressure switch field discloses a waterproof type seat pressure switch, including switch casing and with switch casing cooperation switch cover, the inside assembly of switch casing has the light touch switch pressed by switch cover, light touch switch is connected with the electric wire bundle, the inside assembly of switch casing has the fixed part, and the fixed part is matched with the flexible button of switch cover connection, the fixed part and the flexible button form the cover space to the light touch switch top, and the flexible button pressed trigger light touch switch by switch cover, the inside of switch casing is located below the fixed part and forms the glue pouring area to seal light touch switch and electric wire bundle. The utility model puts forward a kind of waterproof type seat pressure switch, to " glue pouring + sealing ring + water expansion" triple protection, respectively seal light touch switch, block button water seepage, prevent wire bundle passage water, form full-dimension waterproof barrier. Through the above technical scheme, the technical problem that the safety risk caused by insufficient sealing in related technology / prior art is solved.

Description

Technical Field

[0001] This utility model relates to the field of pressure switch technology, and more specifically, to a waterproof seat pressure switch. Background Technology

[0002] The car seat trigger pressure switch uses three types of sensing / operating elements—"occupancy-locking-position"—to convert the three states of "whether there is a person, whether the seat belt is fastened, and whether the seat is adjusted properly" into electrical signals in real time. This determines whether the airbag and seat belt reminders can be triggered correctly, and whether the electric adjustment, welcome function, and autonomous driving mode switching can be executed safely. It is the first and longest-lasting "invisible gatekeeper" for the entire vehicle's passive safety and intelligent cockpit experience.

[0003] The pressure switch for a car seat is located between the seat cushion foam and the frame. It is exposed to rainwater, drinks, dust, and the high humidity environment inside the car. If the seal is insufficient, the contacts may become damp and oxidize, resulting in false alarms or missed alarms, which could directly cause safety risks such as seat belt reminder failure or accidental deactivation of the passenger airbag. Utility Model Content

[0004] This invention provides a waterproof seat pressure switch, solving the technical problem of safety risks caused by insufficient sealing in related technologies.

[0005] This utility model provides a waterproof seat pressure switch, including a switch housing and a switch cover that cooperates with the switch housing. The switch housing is equipped with a tactile switch that is pressed by the switch cover. The tactile switch is connected to a power supply wire harness. A fixing member is installed inside the switch housing, and a flexible button that is connected to the switch cover is fitted on the fixing member. The fixing component and the flexible button form a covering space above the tactile switch, and the flexible button triggers the tactile switch when pressed by the switch cover. An adhesive potting area is formed inside the switch housing below the fixing component to seal the tactile switch and the power supply wiring harness; The switch cover is reversibly connected to the fixing member via a spring.

[0006] As a further optimization of this utility model, the fixing component includes a fixing frame and a cover. The fixing frame is assembled inside the switch housing and connected to one end of the spring. The cover is installed on the top of the fixing frame. The top of the tactile switch slides through the fixing frame and extends into the inside of the cover. The flexible button engages with the cover.

[0007] As a further optimization of this utility model, the outer periphery of the cover forms an inward annular recess, and the inner periphery of the flexible button is provided with a sealing ring that matches the annular recess.

[0008] As a further optimization of this utility model, the flexible button is a silicone flexible button.

[0009] As a further optimization of this utility model, channels for the passing wire harness are provided on both sides of the switch housing.

[0010] As a further optimization of this utility model, the channel is provided with a clip for securing the power cable harness.

[0011] As a further optimization of this utility model, the outer periphery of the power cable harness is fitted with a water-resistant sealing block that presses against the inner wall of the channel and is located on the outside of the clip.

[0012] As a further optimization of this utility model, the flexible button is located in the middle of the spring.

[0013] The beneficial effects of this utility model are as follows: 1. The waterproof seat pressure switch described in this utility model forms a three-layer waterproof barrier through a triple protective structure of "glue sealing + sealing ring sealing + water-swelling sealing": The potting area below the fixing component inside the switch housing seals the tactile switch and the root of the power wiring harness, preventing moisture from entering from below. The outer circumferential recess of the cover is precisely matched with the inner circumferential sealing ring of the flexible button, preventing moisture from seeping in through the button gap. The water-resistant sealing block on the outer periphery of the wire harness presses against the inner wall of the channel. When it comes into contact with water, it automatically expands and fills the gaps to prevent moisture from entering along the wire harness channel.

[0014] 2. The waterproof seat pressure switch described in this utility model provides stable support for the tactile switch through the cooperation of the fixing bracket and the cover. At the same time, the wire harness is fixed by the clip to prevent the wire harness from loosening or the switch components from shifting due to vibration during vehicle operation. This ensures that the switch is in a stable working state for a long time, significantly extending its service life and matching the functional positioning of the car seat pressure switch as a "long-life invisible gatekeeper". Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of a waterproof seat pressure switch proposed in this utility model.

[0016] Figure 2 This is a schematic diagram of the internal structure of the switch housing in a waterproof seat pressure switch proposed in this utility model.

[0017] Figure 3 This is a half-sectional view of the switch housing in a waterproof seat pressure switch proposed in this utility model.

[0018] Figure 4This is a side sectional view of the switch housing in a waterproof seat pressure switch proposed in this utility model.

[0019] In the picture: 1. Switch housing; 2. Opening and closing cover; 3. Touch switch; 4. Electrical wiring harness; 5. Fastener; 51. Fixing bracket; 52. Cover; 521. Annular recess; 6. Flexible buttons; 7. Spring; 8. Sealing ring; 9. Cards; 10. Water-resistant sealing block. Detailed Implementation

[0020] The subject matter described herein will now be discussed with reference to exemplary embodiments. It should be understood that these embodiments are discussed only to enable those skilled in the art to better understand and implement the subject matter described herein, and changes may be made to the function and arrangement of the elements discussed without departing from the scope of this specification. Various processes or components may be omitted, substituted, or added as needed in the examples. Furthermore, features described in some examples may be combined in other examples.

[0021] Example 1 like Figures 1 to 4 As shown, a waterproof seat pressure switch according to an embodiment of the present invention includes a switch housing 1 and a switch cover 2 that cooperates with the switch housing 1. A tactile switch 3 that is pressed by the switch cover 2 is installed inside the switch housing 1. The tactile switch 3 is connected to a power supply wire harness 4. The switch housing 1 is equipped with a fixing member 5, and a flexible button 6 connected to the switch cover 2 is fitted on the fixing member 5. The flexible button 6 is a silicone flexible button. The fixing element 5 and the flexible button 6 form a covering space above the tactile switch 3. The flexible button 6 is pressed by the switch cover 2 to trigger the tactile switch 3. An encapsulation area is formed inside the switch housing 1 below the fixing member 5 to seal the tactile switch 3 and the power supply harness 4; The switch cover 2 is reversibly connected to the fixing member 5 via spring 7.

[0022] When downward pressure is applied to the switch cover 2, the switch cover 2 will move downward against the elastic force of the spring 7.

[0023] Since the flexible button 6 is connected to the switch cover 2, the downward movement of the switch cover 2 will cause the flexible button 6 to move downward together. As the flexible button 6 moves downward, it will contact and press the tactile switch 3, thus triggering the tactile switch 3. At this time, the tactile switch 3 transmits the trigger signal through the power supply harness 4 to realize the signal output function of the pressure switch.

[0024] When the pressure applied to the switch cover 2 is removed, the spring 7 will return to its original state, generating an upward elastic force, pushing the switch cover 2 to move upward and return to its initial position. The reset of the switch cover 2 will also cause the flexible button 6 to return to its initial position, no longer applying pressure to the tactile switch 3. The tactile switch 3 will then reset and stop signal transmission.

[0025] Throughout the entire operation, the fixing component 5 and the flexible button 6 form a protective space above the tactile switch 3, effectively preventing external dust and impurities from entering the upper area of ​​the tactile switch 3 and avoiding interference with its triggering operation. At the same time, the potting area located below the fixing component 5 inside the switch housing 1, after potting treatment, reliably seals the tactile switch 3 and the wiring harness 4, preventing water and moisture from entering and avoiding oxidation of the tactile switch 3 contacts. This eliminates the possibility of "false alarms due to lack of personnel" or "missed alarms due to personnel," ensuring the normal operation of functions such as seat belt reminders and passenger airbag control, and reducing safety risks.

[0026] The fixing component 5 includes a fixing frame 51 and a cover 52. The fixing frame 51 is assembled inside the switch housing 1 and connected to one end of the spring 7. The cover 52 is installed on the top of the fixing frame 51. The top of the touch switch 3 slides through the fixing frame 51 and extends into the inside of the cover 52. The flexible button 6 engages with the cover 52 and is located in the middle of the spring 7.

[0027] When the switch cover 2 is pressed, the switch cover 2 moves downward. Since the switch cover 2 is connected to the fixing bracket 51 through the spring 7, the spring 7 is compressed. At the same time, the switch cover 2 drives the flexible button 6 connected to it to move downward.

[0028] The flexible button 6 engages with the cover 52, so the flexible button 6 exerts a downward force on the cover 52. However, the cover 52 is mounted on the fixed bracket 51 and is in a fixed position. Therefore, the flexible button 6 will deform to a certain extent during its downward movement, and then directly press the top of the tactile switch 3 that extends into the cover 52, thereby triggering the tactile switch 3.

[0029] After the switch cover 2 is released, the compressed spring 7 releases its elastic potential energy, pushing the switch cover 2 to return to its original position. The switch cover 2 then moves the flexible button 6 upwards together. The flexible button 6 returns to its original shape and no longer applies pressure to the tactile switch 3, thus resetting the tactile switch 3.

[0030] Furthermore, an annular recess 521 is formed inward on the outer periphery of the cover 52, and a sealing ring 8 is provided on the inner periphery of the flexible button 6 to match the annular recess 521.

[0031] The matching structure of the annular recess 521 and the sealing ring 8 greatly enhances the sealing performance between the flexible button 6 and the cover 52. During the operation of the pressure switch, external impurities such as water, moisture, and dust are difficult to enter the interior of the cover 52 through the connection between the flexible button 6 and the cover 52. This further protects the triggering part of the tactile switch 3 located inside the cover 52, avoids the influence of impurities on the triggering sensitivity of the tactile switch 3, prevents the tactile switch 3 from malfunctioning due to impurity intrusion, and ensures that the tactile switch 3 can stably achieve triggering and signal transmission during long-term use. This further reduces the risk of "false alarms due to lack of personnel" or "missed alarms due to personnel" in the pressure switch, and improves the reliability and service life of the entire pressure switch. Both sides of the switch housing 1 have channels through which the power wire harness 4 passes.

[0032] The passage is equipped with a clip 9 for securing the power cable harness 4.

[0033] A retaining element 9 is installed in the channels on both sides of the switch housing 1. When the power wiring harness 4 passes through the channel, the retaining element 9 will lock and fix the power wiring harness 4, making its position in the channel more stable and preventing it from moving easily. Due to vehicle vibration, the power wiring harness 4 may shake in the channel, preventing the power wiring harness 4 from rubbing against the inner wall of the channel or other parts and causing wear on the outer sheath of the wiring harness. This protects the wires inside the power wiring harness 4 and prevents short circuits or open circuits. It also avoids interruption or error in the transmission of pressure switch signals due to wiring harness connection problems, ensuring that functions such as seat belt reminders and airbag control can work normally according to the accurate signal of the pressure switch, further improving the safety of vehicle driving.

[0034] Example 2 Based on Embodiment 1, a water-reactive sealing block 10 is fitted around the outer periphery of the power cable harness 4 and is located outside the clip 9. The water-reactive sealing block 10 is cut from a water-swellable water-stop strip.

[0035] A water-repellent sealing block 10 is fitted around the outer periphery of the power cable harness 4 and placed inside the channel and outside the clip 9. The water-repellent sealing block 10 will press against the inner wall of the channel, forming a tight contact with the inner wall of the channel and the outer periphery of the power cable harness 4.

[0036] When moisture attempts to enter the switch housing 1 through the gap between the channel and the power wiring harness 4, the water-contact sealing block 10 will come into contact with the moisture. Due to its material properties, it will expand upon contact with water, further filling the gap between the channel and the power wiring harness 4, forming a more reliable seal and preventing moisture from penetrating further. The clip 9 fixes the power wiring harness 4, while the water-contact sealing block 10 provides a waterproof barrier on the outside of the clip 9. Together, they form a double protection structure. This double protection structure can effectively block external moisture from entering the switch housing 1 through the channel, preventing moisture from contacting the connection between the tactile switch 3 and the power wiring harness 4, preventing the contacts of the tactile switch 3 from becoming damp and oxidized, and preventing the power wiring harness 4 from short-circuiting due to water ingress.

[0037] The embodiments of the present utility model have been described above, but the present embodiments are not limited to the specific implementation methods described above. The specific implementation methods described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of the present embodiments, all of which are within the protection scope of the present embodiments.

Claims

1. A waterproof seat pressure switch, comprising a switch housing (1) and a switch cover (2) cooperating with the switch housing (1), wherein a tactile switch (3) pressable by the switch cover (2) is installed inside the switch housing (1), and the tactile switch (3) is connected to a power supply wire harness (4), characterized in that: The switch housing (1) is equipped with a fixing member (5), and a flexible button (6) connected to the switch cover (2) is fitted on the fixing member (5). The fixing member (5) and the flexible button (6) form a covering space above the tactile switch (3), and the flexible button (6) is pressed by the switch cover (2) to trigger the tactile switch (3). The switch housing (1) has a potting area located below the fixing member (5) to seal the tactile switch (3) and the power supply wire harness (4); The switch cover (2) is reversibly connected to the fixing member (5) by a spring (7).

2. The waterproof seat pressure switch according to claim 1, characterized in that: The fixing component (5) includes a fixing frame (51) and a cover (52). The fixing frame (51) is assembled inside the switch housing (1) and connected to one end of the spring (7). The cover (52) is installed on the top of the fixing frame (51). The top of the tactile switch (3) slides through the fixing frame (51) and extends into the inside of the cover (52). The flexible button (6) engages with the cover (52).

3. A waterproof seat pressure switch according to claim 2, characterized in that: The outer periphery of the cover (52) forms an annular recess (521), and the inner periphery of the flexible button (6) is provided with a sealing ring (8) that matches the annular recess (521).

4. A waterproof seat pressure switch according to any one of claims 1-3, characterized in that: The flexible button (6) is a silicone flexible button.

5. A waterproof seat pressure switch according to claim 4, characterized in that: Both sides of the switch housing (1) are provided with channels through which the power cable harness (4) passes.

6. A waterproof seat pressure switch according to claim 4, characterized in that: The passage is equipped with a clip (9) for securing the power cable harness (4).

7. A waterproof seat pressure switch according to claim 6, characterized in that: The outer periphery of the power cable harness (4) is fitted with a water-resistant sealing block (10) that presses against the inner wall of the channel and is located outside the clip (9).

8. A waterproof seat pressure switch according to claim 7, characterized in that: The flexible button (6) is located in the middle of the spring (7).

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