基于温度变化的定值报警装置
By designing temperature-sensitive deformable components and mechanical structures, temperature detection and alarm prompts are achieved under conditions without electricity, solving the problem that gas stoves cannot be turned off in time when there is no electricity, thus improving safety and gas usage efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- 孙庆新
- Filing Date
- 2025-10-09
- Publication Date
- 2026-07-17
AI Technical Summary
Without electricity, existing temperature detection alarm devices cannot work effectively, resulting in the inability to turn off the gas stove in time, causing gas waste or even safety accidents.
Design a temperature-based alarm device that uses a temperature-sensitive deformable component, a rack and pinion lever, a transmission gear, and an escapement pendulum striking mechanism to detect temperature and emit sound or vibration alarm signals through a mechanical structure.
This device enables temperature detection and alarm alerts in the absence of electricity, preventing gas waste and improving safety. It is suitable for temperature alarms under non-electrical conditions.
Smart Images
Figure CN224517969U_ABST
Abstract
Claims
1. A temperature change based fixed value alarm device, characterized in that, include: A housing (1) is rotatably connected to a toothed spindle (2) in the middle of the housing (1). A fixing post (3) is provided inside the housing (1) and near the toothed spindle (2). An elastic strip (4) is connected between the fixing post (3) and the toothed spindle (2). The elastic strip (4) causes the rotating toothed spindle (2) to have a tendency to move backward. Temperature-sensitive deformable component (6), the temperature-sensitive deformable component (6) is located inside the housing (1) and one end is fixedly connected to the housing (1), the other end of the temperature-sensitive deformable component (6) is a free end (62); A rack lever (7) is rotatably located inside the housing (1). One end of the rack lever (7) is hinged to the free end (62), and the other end is a toothed end that meshes with the toothed spindle (2) for transmission. A transmission gear (8) is rotatably located inside the housing (1) and is connected to the toothed spindle (2) in a transmission manner; A spring-loaded gear set (9) is rotatably located inside the housing (1) and meshes with the transmission gear (8) for transmission. The escapement pendulum striking mechanism (10) is located inside the housing (1) and is connected to the spring-loaded gear set (9) for transmission. When the tooth end of the rack lever (7) disengages from the toothed spindle (2), the spring-loaded gear set (9) rotates in reverse and triggers the pendulum of the escapement pendulum striking mechanism (10) to periodically strike the housing (1).
2. A fixed value alarm device based on temperature change according to claim 1, characterized in that, When the temperature detected by the temperature-sensing deformable part (6) is within the preset alarm temperature threshold range, the toothed end of the rack lever (7) causes the toothed spindle (2) to rotate, and the elastic strip (4) wraps around the outer wall of the toothed spindle; when the temperature detected by the temperature-sensing deformable part (6) exceeds the preset alarm temperature threshold, the toothed end of the rack lever (7) continues to rotate and disengages from the meshing relationship with the toothed spindle (2), and the toothed spindle (2) rotates based on the elastic strip (4) and changes the rotation state of the spring-loaded gear set (9).
3. A temperature change based fixed value alarm device according to claim 1, characterized in that, A speed-increasing meshing gear (11) is fixed on the toothed spindle (2). The speed-increasing meshing gear (11) rotates synchronously with the toothed spindle (2). The transmission gear (8) is a coaxial double gear. The speed-increasing meshing gear (11) meshes with the small gear of the coaxial double gear. The large gear of the coaxial double gear is connected to the spring-loaded gear set (9).
4. A fixed value alarm device based on temperature change according to claim 1, characterized in that, The spring-loaded gear set (9) includes a coaxially arranged central gear (91), a transition gear disk (92), and a ratchet wheel (93). The central gear (91) and the ratchet wheel (93) rotate synchronously. The transition gear disk (92) and the ratchet wheel (93) are connected in one direction. One end of the spring (12) is connected to the ratchet wheel (93). The other end of the spring (12) is fixed to the spring post (15) of the housing. The transition gear disk (92) is connected in a transmission to the escapement pendulum striking mechanism (10).
5. A fixed value alarm device based on temperature change according to claim 4, characterized in that, The central gear (91), transition gear disk (92), and ratchet wheel (93) are all mounted on the transmission shaft (94). The transmission shaft (94) has an elliptical rod segment (941). The transmission shaft (94) rotates inside the housing (1). The central gear (91) is fixedly connected to the transmission shaft (94). The ratchet wheel (93) has a mounting hole that matches the outer contour shape of the elliptical rod segment (941). The central gear (91) and the ratchet wheel (93) rotate synchronously with the transmission shaft (94). The transition gear disk (92) has a shaft hole. The elliptical rod segment (941) rotates within the shaft hole.
6. A fixed value alarm device based on temperature change according to claim 5, characterized in that, One end of the transition gear disk (92) is fixed with a helical internal gear ring (921), and the ratchet wheel (93) is located inside the helical internal gear ring (921) and drives the helical internal gear ring (921) to rotate in one direction.
7. A fixed value alarm device based on temperature change according to claim 4, characterized in that, The escapement pendulum striking mechanism (10) includes an escape pawl (101), an escape wheel (102), a transition gear (103), and a striking hammer (104). The escape pawl (101) is connected to the inside of the housing and rotates periodically at a certain angle. The escape wheel (102) is rotatably located at one end of the escape pawl (101). The striking hammer (104) is fixed at the other end of the escape pawl (101). The transition gear (103) is rotatably located between the escape wheel (102) and the transition gear disk (92) and causes the escape wheel (102) and the transition gear disk (92) to rotate in the same direction.
8. A fixed value alarm device based on temperature change according to claim 7, characterized in that, One end of the escape pawl (101) is provided with an arc-shaped actuating surface (1011). Two toothed claws (1012) are provided at intervals on the side of the escape pawl (101) near the arc-shaped actuating surface. The two toothed claws mesh with the escape wheel (102) to make the escape wheel (102) rotate in one direction. When the mainspring accumulator gear set charges the mainspring, the transition gear disk (92) and the escape wheel (102) remain stationary. When the mainspring is released, the transition gear disk (92) and the escape wheel (102) rotate. The rotation of the escape wheel (102) causes the escape pawl (101) and the hammer (104) to reciprocate periodically at a certain angle. The reciprocating periodic swing of the hammer (104) acts on the housing (1) and generates sound or vibration signals.
9. A temperature-based alarm device according to any one of claims 1-7, characterized in that, The temperature-sensing deformable part (6) is a bimetallic strip, a Bourdon tube, or a temperature-sensing bellows. When the temperature-sensing deformable part is a Bourdon tube, a medium filling valve (14) is provided near the fixed end of the Bourdon tube, and the Bourdon tube is filled with temperature-sensing medium through the medium filling valve.
10. A fixed value alarm device based on temperature change according to claim 1, characterized in that, The housing (1) is provided with an adapter screw (13) for connecting external accessories, and the housing (1) is provided with a through hole for communicating with the internal and external environments.