Household gas alarm
By designing a removable protective sleeve and opening and closing mechanism on the gas alarm, the problem of oil and scale blockage is solved, ensuring the stability and reliability of the gas alarm, and achieving a timely and accurate gas leakage warning.
Patent Information
- Application Number
- CN202422138395.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-02
- Publication Date
- 2025-07-18
- Estimated Expiration
- 2034-09-02
AI Technical Summary
When the gas alarm is used in a fume environment for a long time, the detection hole is easily blocked by oil and scale, resulting in a decrease in detection accuracy or a complete loss of function, and it is impossible to warn of gas leakage in time.
A household gas alarm is designed, equipped with a detachable barrel-shaped protective sleeve and an opening and closing mechanism. The side wall of the protective sleeve is equipped with a circular hole. Through the back and forth movement of the opening and closing mechanism, oil and dirt are ejected using the top extension rod and the bump structure to keep the hole unobstructed.
Effectively prevent oil and scale blockage, ensure the stability and reliability of the gas alarm, and ensure that the alarm can be issued in a timely and accurate manner when gas leaks.
Smart Images
Figure CN223123508U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of gas alarms, in particular to a household gas alarm. Background Art
[0002] In today's society, with people's continuous pursuit and improvement of the quality of life and safety awareness, the attention to various gas leakage problems is also on the rise. However, accidental gas leakage incidents still occur frequently.
[0003] In many household scenarios, gas is widely used in the daily cooking process, which is particularly prominent in old residential areas. During the cooking process of three meals a day, a large amount of diffused lampblack will inevitably be generated. The gas alarm installed beside the kitchen, due to the lack of an effective structure to prevent lampblack attachment in its detection holes, causes the lampblack to continuously accumulate and gradually block the detection holes.
[0004] The consequences of this situation are extremely serious. First of all, the accumulation of lampblack will significantly reduce the detection accuracy of the alarm, making it unable to accurately sense the subtle changes in gas leakage. Secondly, when the detection holes are completely blocked due to excessive accumulation of lampblack, the alarm will completely lose its detection function and cannot play its due warning role at critical moments. Content of the Utility Model
[0005] In order to solve the problem that the gas alarm is blocked by oil dirt when it is in lampblack for a long time, the utility model provides a household gas alarm.
[0006] In a first aspect, a household gas alarm provided by the utility model adopts the following technical scheme: it includes an alarm body, a barrel-shaped protective cover detachably connected above the alarm body, an opening and closing mechanism arranged inside the protective cover, circular holes for gas passage are opened on the side wall of the protective cover, and the opening and closing mechanism moves back and forth in the direction of the circular hole and inside and outside the circular hole starting from the axis perpendicular to the center of the upper cover of the protective cover.
[0007] Further, the protective cover includes a non-porous upper cover, a side wall arranged around the upper cover, and circular holes are opened on the side wall of the protective cover and are distributed in a circumferential array.
[0008] Further, a clamping convex block is provided at one end of the side wall in contact with the alarm, a groove corresponding to the convex block is provided on the upper cover of the alarm, and a sliding groove communicating with the groove and used for sliding and clamping the clamping convex block is provided around the groove on the upper cover of the alarm.
[0009] Further, the opening and closing mechanism includes a disc disposed inside the protective cover, and a top extension rod slidably connected inside the disc. The center of the upper end of the disc is connected to the center of the non-hole upper cover through a connecting shaft. The disc is provided with a plurality of sliding channels for the top extension rod to slide from the center to the outer edge of the disc. One end of the top extension rod away from the center of the disc is provided with a top block, and the top block is provided with a protrusion towards the side wall of the protective cover.
[0010] Further, a transmission gear is provided on the connecting shaft at the upper end of the disc. One end of the top extension rod close to the center of the disc is provided with a cylindrical driving strip. The transmission gear is provided with an orbital hole for the driving strip to move along a preset track. The rotation of the transmission gear on the connecting shaft causes the driving strip to move in the orbital hole, thereby causing the top extension rod to telescopically move in the sliding channel.
[0011] Further, a driving gear meshing with the transmission gear is further provided at the upper end of the disc. The center of the driving gear is connected with a rotating rod, and the rotating rod passes through the non-hole upper cover of the protective cover.
[0012] Further, the protective cover is cylindrical, and the top block is an arc-shaped top block with the same curvature as the cylinder.
[0013] Further, a gap is always left between the arc-shaped top block and the disc.
[0014] Further, the opening and closing mechanism further includes a ring disposed inside the protective cover, and a top extension rod slidably connected inside the ring. The ring is connected to the non-hole upper cover through a plurality of connecting rods. The ring is provided with a plurality of sliding channels for the top extension rod to slide from the inner edge to the outer edge of the ring. A return spring is hung on the driving strip of the top extension rod, and the return spring is connected between the driving strip and the inner edge of the ring.
[0015] Further, a columnar driving column with a larger upper part and a smaller lower part is provided on the central axis of the ring inside the protective cover. The driving column is connected to the non-hole upper cover of the protective cover through a spring. The upper end of the driving column is connected with a button and protrudes from the surface of the non-hole upper cover of the protective cover. The driving column moves up and down inside the ring, drives the top extension rod to move in the sliding channel by changing the diameter of the driving column on the plane of the ring, and the top extension rod is reset by the return spring.
[0016] In summary, the present utility model has the following beneficial technical effects:
[0017] 1. A household gas alarm proposed by the present utility model, through the setting of the protective cover, can be detachably connected above the alarm body, which can play a protective role for the alarm. The round holes increase the gas inlet channels. Through the design of the opening and closing mechanism, the protrusion extends into and out of the round holes, pushing out the oil dirt that may block the round holes, ensuring the smoothness of the round holes, improving the stability and reliability of the alarm, and ensuring that an alarm can be issued in a timely and accurate manner when gas leaks.
[0018] 2. A household gas alarm proposed by the present utility model designs two opening and closing mechanisms. For the first opening and closing structure, the rotation of the transmission gear causes the driving bar to move in the track hole, so that the top extension rod expands and contracts in the slideway. The top extension rod drives the top block to move towards the round hole, and the protrusion extends into the round hole to push out the oil dirt that may block the round hole.
[0019] 3. A household gas alarm proposed by the present utility model, in which for the second opening and closing mechanism, the driving column moves up and down in the circular ring through the key control, and the change of the diameter of the driving column on the plane of the circular ring is used to drive the top extension rod to move in the slideway. When the key is pressed, the driving column moves downward, driving the top extension rod to move towards the round hole, and the protrusion on the top block pushes out the blockage to ensure the smoothness of the round hole; after the key is released, the top extension rod is reset by the return spring. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] Figure 1 is a schematic structural diagram of a household gas alarm according to an embodiment of the present utility model.
[0021] Figure 2 is a schematic structural diagram of a detachable connection according to an embodiment of the present utility model.
[0022] Figure 3 is a schematic structural diagram of the top extension rod according to an embodiment of the present utility model.
[0023] Figure 4 is an exploded schematic structural diagram of a household gas alarm according to an embodiment of the present utility model.
[0024] Figure 5 is a top view of an opening and closing mechanism according to an embodiment of the present utility model.
[0025] Figure 6 is an exploded schematic structural diagram of another household gas alarm according to an embodiment of the present utility model.
[0026] Figure 7 is a top view of another opening and closing mechanism according to an embodiment of the present utility model.
[0027] Figure 8 is a schematic structural diagram of the driving column according to an embodiment of the present utility model.
[0028] Wherein, 1. Alarm body; 2. Protective cover; 201. Upper cover without holes; 202. Side wall; 203. Round hole; 301. Convex block; 302. Groove; 303. Slide groove; 4. Opening and closing mechanism; 401. Disc; 402. Top extension rod; 403. Top block; 404. Driving bar; 405. Protrusion; 406. Transmission gear; 407. Track hole; 408. Driving gear; 501. Circular ring; 502. Return spring; 503. Driving column; 504. Key. Detailed implementation mode
[0029] The present utility model will be further described in detail below with reference to the accompanying drawings.
[0030] Embodiment 1
[0031] Referring to Figure 1 , a household gas alarm in this embodiment includes: an alarm body 1, a barrel-shaped protective cover 2 detachably connected above the alarm body 1, and an opening and closing mechanism 4 arranged inside the protective cover 2. A circular hole 203 for gas passage is provided on the side wall 202 of the protective cover 2. The opening and closing mechanism 4 takes the axis perpendicular to the center of the upper cover of the protective cover 2 as the starting point, moves towards the circular hole 203 and makes a reciprocating motion inside and outside the circular hole 203.
[0032] An installation plate is provided at the bottom end of the alarm body 1 and is fixed to the wall near the kitchen gas pipeline by bolts.
[0033] The protective cover 2 includes a non-perforated upper cover 201 and a side wall 202 arranged around the upper cover. Circular holes 203 are provided on the side wall 202 of the protective cover 2 and are distributed in a circumferential array.
[0034] Referring to Figure 2 , a clamping convex block 301 is provided at one end of the side wall 202 in contact with the alarm, a groove 302 corresponding to the convex block 301 is provided on the upper cover of the alarm, and a sliding groove 303 communicating with the groove 302 and used for the sliding clamping of the clamping convex block 301 is provided around the groove 302 on the upper cover of the alarm.
[0035] The protective cover 2 can be screwed onto the upper cover of the alarm by screwing.
[0036] Referring to Figure 3 and Figure 4 , the opening and closing mechanism 4 includes a disc 401 arranged inside the protective cover 2 and a top extension rod 402 slidably connected inside the disc 401. The center of the upper end of the disc 401 is connected to the center of the non-perforated upper cover 201 through a connecting shaft. The disc 401 is provided with a plurality of sliding channels for the top extension rod 402 to slide from the center to the outer edge of the disc 401. A top block 403 is provided at one end of the top extension rod 402 away from the center of the disc 401, and a protrusion 405 is provided on the top block 403 facing the side wall 202 of the protective cover 2.
[0037] Referring to Figure 5A transmission gear 406 is provided on the connecting shaft at the upper end of the disc 401, and a cylindrical driving bar 404 is provided at one end of the extension rod 402 close to the center of the disc 401. A track hole 407 is opened on the transmission gear 406 for the driving bar 404 to move according to a preset trajectory. The transmission gear 406 rotates on the connecting shaft to make the driving bar 404 move in the track hole 407, thereby making the extension rod 402 telescopically move in the slide.
[0038] A driving gear 408 meshing with the transmission gear 406 is also disposed at the upper end of the disk 401 . A rotating rod (not shown) is connected to the center of the driving gear 408 . The rotating rod passes through the non-perforated upper cover 201 of the protective sleeve 2 .
[0039] The protective sleeve 2 is cylindrical, and the top block 403 is an arc-shaped top block 403 with the same curvature as the cylinder.
[0040] There is always a gap between the arc-shaped top block 403 and the disk 401 .
[0041] Working principle: Kitchen grease usually adheres to the hole, affecting the normal operation of the alarm. By rotating the rotary rod, the rotary rod drives the driving gear 408 to rotate, and the driving gear 408 drives the transmission gear 406 to rotate. Because of the rotation of the transmission gear 406, the driving bar 404 moves along a specific track in the track hole 407 of the transmission gear 406, thereby driving the extension rod 402 to move in the slideway, so that the extension rod 402 moves outward from the center of the disc 401, thereby moving close to the side wall 202 of the protective cover 2, and the protrusion 301 pushes the grease out of the circular hole 203. By rotating the rotary rod in the opposite direction, the extension rod 402 retracts to the center of the disc 401, and the extension rod 402 is reset. Repeated rotation and reverse rotation can make the protrusion 405 on the extension rod 402 go back and forth in the circular hole 203, achieving effective cleaning.
[0042] In addition, after the resetting of the extension rod 402 , there is always a gap between the arc-shaped top block 403 of the extension rod 402 and the disc 401 , so that air can circulate normally in the protective sleeve 2 .
[0043] Example 2
[0044] The difference between this embodiment and the first embodiment is that this embodiment provides a second opening and closing mechanism 4 .
[0045] Reference Figure 6 and Figure 7, the opening and closing mechanism 4 further includes a ring 501 disposed within the protective sleeve 2 and a top extension rod 402 slidably connected within the ring 501. The ring 501 is connected to the non-perforated upper cover 201 by a plurality of connecting rods. A plurality of sliding channels for the top extension rod 402 to slide are formed on the ring 501 from the inner edge to the outer edge of the ring 501. A return spring 502 is hung on the driving strip 404 of the top extension rod 402, and the return spring 502 is connected between the driving strip 404 and the inner edge of the ring 501.
[0046] Refer to Figure 8 , within the protective sleeve 2 and at the central axis of the ring 501, there is a columnar driving column 503 that is larger at the top and smaller at the bottom. The driving column 503 is connected to the non-perforated upper cover 201 of the protective sleeve 2 by a spring (the spring is not shown in the figure). The upper end of the driving column 503 is connected to a button 504 and protrudes from the surface of the non-perforated upper cover 201 of the protective sleeve 2. The driving column 503 moves up and down within the ring 501. By changing the diameter of the driving column 503 in the plane of the ring 501, the top extension rod 402 is driven to move within the sliding channel, and the top extension rod 402 is reset by the return spring 502.
[0047] Working principle: By pressing the button 504 on the upper surface of the protective sleeve 2, the driving column 503 is driven to move downward. The driving column 503 is a columnar structure that is larger at the top and smaller at the bottom, and the cross-sectional diameter of the driving column 503 will change in the plane of the ring 501, so that the top extension rod 402 is squeezed towards the side wall 202 of the protective sleeve 2. When the hand is released, due to the action of the spring, the driving column 503 returns to its original position upward, and the cross-sectional diameter of the driving column 503 in the plane of the ring 501 becomes smaller. Under the action of the return spring 502, the top extension rod 402 returns to its original position, realizing that the protrusion 405 on the top extension rod 402 extends and retracts into the circular hole 203. By repeatedly pressing the button 504, effective cleaning is achieved.
[0048] The above are all the preferred embodiments of the present invention, and the protection scope of the present invention is not limited thereby. Therefore, all equivalent changes made according to the structure, shape, and principle of the present invention should be covered within the protection scope of the present invention.
Claims
1. A household gas alarm, characterized in that, It includes an alarm body (1), a barrel-shaped protective cover (2) detachably connected above the alarm body (1), and an opening and closing mechanism (4) arranged inside the protective cover (2). A circular hole (203) for gas to pass through is formed in the side wall (202) of the protective cover (2). The opening and closing mechanism (4) takes the axis perpendicular to the center of the upper cover of the protective cover (2) as the starting point, moves towards the circular hole (203) and makes a reciprocating motion inside and outside the circular hole (203).
2. The household gas alarm according to claim 1, wherein, The protective cover (2) includes a non-perforated upper cover (201) and a side wall (202) arranged around the upper cover. Circular holes (203) are formed in the side wall (202) of the protective cover (2) and are distributed in a circumferential array.
3. The household gas alarm according to claim 2, characterized in that, One end of the side wall (202) in contact with the alarm is provided with a clamping convex block (301), and the upper cover of the alarm is provided with a groove (302) corresponding to the convex block (301). A chute (303) communicating with the groove (302) and used for the sliding and clamping of the clamping convex block (301) is arranged around the groove (302) on the upper cover of the alarm.
4. A household gas alarm according to claim 1, characterized in that, The opening and closing mechanism (4) includes a disc (401) arranged inside the protective cover (2) and a top extension rod (402) slidably connected inside the disc (401). The center of the upper end of the disc (401) is connected to the center of the non-perforated upper cover (201) through a connecting shaft. A plurality of sliding channels for the top extension rod (402) to slide are formed in the disc (401) from the center to the outer edge of the disc (401). One end of the top extension rod (402) far from the center of the disc (401) is provided with a top block (403), and a protrusion (405) is arranged on the top block (403) facing the side wall (202) of the protective cover (2).
5. The household gas alarm according to claim 4, characterized in that, A transmission gear (406) is arranged on the connecting shaft at the upper end of the disc (401). A cylindrical driving strip (404) is arranged at one end of the top extension rod (402) close to the center of the disc (401). An orbital hole (407) for the driving strip (404) to move along a preset track is formed in the transmission gear (406). The transmission gear (406) rotates on the connecting shaft to make the driving strip (404) move in the orbital hole (407), so that the top extension rod (402) makes a telescopic motion in the sliding channel.
6. The household gas alarm according to claim 5, characterized in that, A driving gear (408) meshing with the transmission gear (406) is further arranged at the upper end of the disc (401). A rotating rod is connected to the center of the driving gear (408), and the rotating rod passes through the non-perforated upper cover (201) of the protective cover (2).
7. The household gas alarm according to claim 4, characterized in that, The protective cover (2) is cylindrical, and the top block (403) is an arc-shaped top block (403) with the same curvature as the cylinder.
8. The household gas alarm according to claim 7, wherein, There is always a gap between the arc-shaped top block (403) and the disc (401).
9. The household gas alarm according to claim 2, characterized in that, The opening and closing mechanism (4) further includes a ring (501) disposed within the protective sleeve (2), and a top extension rod (402) slidably connected within the ring (501). The ring (501) is connected to the non-porous upper cover (201) through a plurality of connecting rods. A plurality of sliding channels for the top extension rod (402) to slide are formed on the ring (501) from the inner edge to the outer edge of the ring (501). A return spring (502) is hung on the driving strip (404) of the top extension rod (402), and the return spring (502) is connected between the driving strip (404) and the inner edge of the ring (501).
10. The household gas alarm according to claim 9, characterized in that, A columnar driving column (503) with a larger upper part and a smaller lower part is provided on the central axis of the ring (501) within the protective sleeve (2). The driving column (503) is connected to the non-porous upper cover (201) of the protective sleeve (2) through a spring. The upper end of the driving column (503) is connected with a key (504) and protrudes from the surface of the non-porous upper cover (201) of the protective sleeve (2). The driving column (503) moves up and down within the ring (501). By changing the diameter of the driving column (503) on the plane of the ring (501), the top extension rod (402) is driven to move within the sliding channel, and the top extension rod (402) is reset through the return spring (502).